【QT中的容器|摄像头|jpeg库的移植和使用|explicit 关键字|逗号表达式】
【1】QT中的容器《–》C++容器
1.对比
vector QVector
set QSet
list QList
map QMap
stack QStack
queue QQueue
【2】QT中的摄像头显示
1.涉及到类
QT += multimedia
QT += multimediawidgets
QCameraInfo //获取当前系统所有的摄像头信息
QCamera //表示摄像头对象
QVideoWidget //表示摄像头拍摄画面的显示窗口
2.思路和步骤
(1)获取当前系统中所有的摄像头信息
[static] QList<QCameraInfo> QCameraInfo::availableCameras()
返回值：容器，存放了所有的摄像头信息
QString QCameraInfo::description() const
返回值：摄像头的描述信息
QString QCameraInfo::deviceName() const
返回值：摄像头的设备名称
(2)定义QCamera对象
QCamera::QCamera(const QByteArray &deviceName)
参数：依据摄像头的设备名字构造一个摄像头对象
(3)摄像头显示需要用到的窗口
(创建QVideoWidget对象跟你在ui中拖过来的QWidget绑定在一起)
QVideoWidget::QVideoWidget(QWidget *parent = nullptr)
参数：parent --》把你在ui中拖过来的QWidget对象作为实参
把摄像头跟窗口也绑定
void QCamera::setViewfinder(QVideoWidget *viewfinder)
参数：viewfinder--》你刚才准备好的那个窗口
调整窗口的大小，让窗口给QWidget大小保持一致
void QWidget::resize(int w, int h)
显示窗口
void QWidget::show()
启动摄像头
void QCamera::start()
(4)关闭摄像头
void QCamera::stop()
3.QT中的摄像头类和代码不能在ARM平台上运行
原因：QT的摄像头类不支持V4L2架构
V4L2摄像头代码融入到QT工程中 项目阶段(在开发板上运行)：需要用到摄像头
1.思路
跟QT控制硬件的思路类似,把摄像头代码(C语言)改写成C++(封装成C++的一个类)
4.笔试题+复习
1.C++关键字
explicit //禁止隐式转换
父类指针=子类对象的地址
2.笔试题
int a=1;
int b=0;
int c=(a,b++); // (a,b++)逗号表达式,从左到右计算，最终式子的结果由最右边的式子决定
a? b? c?
1 1 1
【3】jpeg库的移植和使用
1.libjpeg移植
(1)解压jpeg的源码包，然后执行configure
./configure --prefix=/home/gec/xxx CC=arm-linux-gcc --host=arm-linux --enable-shared --enable-static
--prefix 指定编译得到的库文件，头文件所在的位置
--enable-shared 生成动态库
--enable-static 生成静态库
(2) make && make install
make 编译库
make install 把编译产生的库文件头文件安装到第一步你指定的目录下
2.使用jpeg库提供的接口函数显示jpg图片
jpg图片的背景知识：
jpg图片采用特殊的算法压缩过，占用的存储空间很小，很适合在网络上传输
大致思路：jpg原始数据还原出来(解压缩) --》得到原始的RGB数据--》原始的RGB转换成ARGB填充到开发板的lcd上
3.显示思路
第一步：定义解压缩结构体变量和处理错误的结构体变量，并初始化
struct jpeg_decompress_struct 解压缩结构体
{
image_width; //图片宽
image_height; //图片高
num_components; //图片的色深(3个字节),每个像素点占用的字节数
err; //保存jpeg_std_error()返回值
}
jpeg_create_decompress(cinfo)
参数： cinfo --》解压缩结构体指针
struct jpeg_error_mgr 处理错误的结构体
{
}
jpeg_std_error(struct jpeg_error_mgr * err);
参数：err --》保持错误信息的结构体指针
第二步：指定解压缩数据源
fopen(你要显示的那张jpg图片)
jpeg_stdio_src(j_decompress_ptr cinfo, FILE * infile);
参数：cinfo --》解压缩结构体指针
infile --》你刚才打开的那张图片
第三步：读取jpg图片的头信息
jpeg_read_header(j_decompress_ptr cinfo,boolean require_image)
参数：cinfo --》解压缩结构体指针
require_image --》true
第四步：开始解压缩得到jpg原始的RGB数据
jpeg_start_decompress(j_decompress_ptr cinfo);
参数：cinfo --》解压缩结构体指针
第五步：关键步骤,读取解压缩得到的RGB数据，把数据填充到开发板的lcd上
jpeg_read_scanlines(j_decompress_ptr cinfo, JSAMPARRAY scanlines,JDIMENSION max_lines)
参数：cinfo --》解压缩结构体指针
scanlines --》存放读取到解压缩后的RGB数据
max_lines --》你读取多少行RGB数据，一般一次读取一行
char *buf=malloc(一行RGB数据大小);
for(i=0; i<图片高; i++)
{
jpeg_read_scanlines(&mydem,&buf,1)； //一次读取一行
//立马把buf中的一行RGB数据填充到开发板的lcd上
}
第六步：收尾
jpeg_finish_decompress(j_decompress_ptr cinfo);
jpeg_destroy_decompress(j_decompress_ptr cinfo);
【4】逗号表达式
有,的表达式，最右边的值才是结果
#include <stdio.h>
int main()
{
//int a=1;
//int b=0;
//int c=(a,b++);
//printf("%d %d %d\n",a,b,c);
int a=1;
int b=2;
int c=a++; // c=0 a=26 b=3 d =26 正确答案
int d=(a+b,b++,c--,a+=7,a*=b,--a); //挖坑
//1 2 1 0
//9 3 1 0
//27 2 1 26
printf("%d %d %d %d\n",a,b,c,d);
}
【5】explicit 关键字
#include <iostream>
using namespace std;
class Animal
{
public:
explicit Animal(int age)
{
cout<<"我是动物 年龄: "<<age<<endl;
}
};
int main()
{
Animal a1(7);
//Animal a2=5; //错误，隐式转换
}
【6】jpeg源码
1. 【jpeglib.h】
/*
* jpeglib.h
*
* Copyright (C) 1991-1998, Thomas G. Lane.
* Modified 2002-2013 by Guido Vollbeding.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
* This file defines the application interface for the JPEG library.
* Most applications using the library need only include this file,
* and perhaps jerror.h if they want to know the exact error codes.
*/
#ifndef JPEGLIB_H
#define JPEGLIB_H
/*
* First we include the configuration files that record how this
* installation of the JPEG library is set up. jconfig.h can be
* generated automatically for many systems. jmorecfg.h contains
* manual configuration options that most people need not worry about.
*/
#ifndef JCONFIG_INCLUDED /* in case jinclude.h already did */
#include "jconfig.h" /* widely used configuration options */
#endif
#include "jmorecfg.h" /* seldom changed options */
#ifdef __cplusplus
#ifndef DONT_USE_EXTERN_C
extern "C" {
#endif
#endif
/* Version IDs for the JPEG library.
* Might be useful for tests like "#if JPEG_LIB_VERSION >= 90".
*/
#define JPEG_LIB_VERSION 90 /* Compatibility version 9.0 */
#define JPEG_LIB_VERSION_MAJOR 9
#define JPEG_LIB_VERSION_MINOR 1
/* Various constants determining the sizes of things.
* All of these are specified by the JPEG standard,
* so don't change them if you want to be compatible.
*/
#define DCTSIZE 8 /* The basic DCT block is 8x8 coefficients */
#define DCTSIZE2 64 /* DCTSIZE squared; # of elements in a block */
#define NUM_QUANT_TBLS 4 /* Quantization tables are numbered 0..3 */
#define NUM_HUFF_TBLS 4 /* Huffman tables are numbered 0..3 */
#define NUM_ARITH_TBLS 16 /* Arith-coding tables are numbered 0..15 */
#define MAX_COMPS_IN_SCAN 4 /* JPEG limit on # of components in one scan */
#define MAX_SAMP_FACTOR 4 /* JPEG limit on sampling factors */
/* Unfortunately, some bozo at Adobe saw no reason to be bound by the standard;
* the PostScript DCT filter can emit files with many more than 10 blocks/MCU.
* If you happen to run across such a file, you can up D_MAX_BLOCKS_IN_MCU
* to handle it. We even let you do this from the jconfig.h file. However,
* we strongly discourage changing C_MAX_BLOCKS_IN_MCU; just because Adobe
* sometimes emits noncompliant files doesn't mean you should too.
*/
#define C_MAX_BLOCKS_IN_MCU 10 /* compressor's limit on blocks per MCU */
#ifndef D_MAX_BLOCKS_IN_MCU
#define D_MAX_BLOCKS_IN_MCU 10 /* decompressor's limit on blocks per MCU */
#endif
/* Data structures for images (arrays of samples and of DCT coefficients).
* On 80x86 machines, the image arrays are too big for near pointers,
* but the pointer arrays can fit in near memory.
*/
typedef JSAMPLE FAR *JSAMPROW; /* ptr to one image row of pixel samples. */
typedef JSAMPROW *JSAMPARRAY; /* ptr to some rows (a 2-D sample array) */
typedef JSAMPARRAY *JSAMPIMAGE; /* a 3-D sample array: top index is color */
typedef JCOEF JBLOCK[DCTSIZE2]; /* one block of coefficients */
typedef JBLOCK FAR *JBLOCKROW; /* pointer to one row of coefficient blocks */
typedef JBLOCKROW *JBLOCKARRAY; /* a 2-D array of coefficient blocks */
typedef JBLOCKARRAY *JBLOCKIMAGE; /* a 3-D array of coefficient blocks */
typedef JCOEF FAR *JCOEFPTR; /* useful in a couple of places */
/* Types for JPEG compression parameters and working tables. */
/* DCT coefficient quantization tables. */
typedef struct {
/* This array gives the coefficient quantizers in natural array order
* (not the zigzag order in which they are stored in a JPEG DQT marker).
* CAUTION: IJG versions prior to v6a kept this array in zigzag order.
*/
UINT16 quantval[DCTSIZE2]; /* quantization step for each coefficient */
/* This field is used only during compression. It's initialized FALSE when
* the table is created, and set TRUE when it's been output to the file.
* You could suppress output of a table by setting this to TRUE.
* (See jpeg_suppress_tables for an example.)
*/
boolean sent_table; /* TRUE when table has been output */
} JQUANT_TBL;
/* Huffman coding tables. */
typedef struct {
/* These two fields directly represent the contents of a JPEG DHT marker */
UINT8 bits[17]; /* bits[k] = # of symbols with codes of */
/* length k bits; bits[0] is unused */
UINT8 huffval[256]; /* The symbols, in order of incr code length */
/* This field is used only during compression. It's initialized FALSE when
* the table is created, and set TRUE when it's been output to the file.
* You could suppress output of a table by setting this to TRUE.
* (See jpeg_suppress_tables for an example.)
*/
boolean sent_table; /* TRUE when table has been output */
} JHUFF_TBL;
/* Basic info about one component (color channel). */
typedef struct {
/* These values are fixed over the whole image. */
/* For compression, they must be supplied by parameter setup; */
/* for decompression, they are read from the SOF marker. */
int component_id; /* identifier for this component (0..255) */
int component_index; /* its index in SOF or cinfo->comp_info[] */
int h_samp_factor; /* horizontal sampling factor (1..4) */
int v_samp_factor; /* vertical sampling factor (1..4) */
int quant_tbl_no; /* quantization table selector (0..3) */
/* These values may vary between scans. */
/* For compression, they must be supplied by parameter setup; */
/* for decompression, they are read from the SOS marker. */
/* The decompressor output side may not use these variables. */
int dc_tbl_no; /* DC entropy table selector (0..3) */
int ac_tbl_no; /* AC entropy table selector (0..3) */
/* Remaining fields should be treated as private by applications. */
/* These values are computed during compression or decompression startup: */
/* Component's size in DCT blocks.
* Any dummy blocks added to complete an MCU are not counted; therefore
* these values do not depend on whether a scan is interleaved or not.
*/
JDIMENSION width_in_blocks;
JDIMENSION height_in_blocks;
/* Size of a DCT block in samples,
* reflecting any scaling we choose to apply during the DCT step.
* Values from 1 to 16 are supported.
* Note that different components may receive different DCT scalings.
*/
int DCT_h_scaled_size;
int DCT_v_scaled_size;
/* The downsampled dimensions are the component's actual, unpadded number
* of samples at the main buffer (preprocessing/compression interface);
* DCT scaling is included, so
* downsampled_width =
* ceil(image_width * Hi/Hmax * DCT_h_scaled_size/block_size)
* and similarly for height.
*/
JDIMENSION downsampled_width; /* actual width in samples */
JDIMENSION downsampled_height; /* actual height in samples */
/* For decompression, in cases where some of the components will be
* ignored (eg grayscale output from YCbCr image), we can skip most
* computations for the unused components.
* For compression, some of the components will need further quantization
* scale by factor of 2 after DCT (eg BG_YCC output from normal RGB input).
* The field is first set TRUE for decompression, FALSE for compression
* in initial_setup, and then adapted in color conversion setup.
*/
boolean component_needed;
/* These values are computed before starting a scan of the component. */
/* The decompressor output side may not use these variables. */
int MCU_width; /* number of blocks per MCU, horizontally */
int MCU_height; /* number of blocks per MCU, vertically */
int MCU_blocks; /* MCU_width * MCU_height */
int MCU_sample_width; /* MCU width in samples: MCU_width * DCT_h_scaled_size */
int last_col_width; /* # of non-dummy blocks across in last MCU */
int last_row_height; /* # of non-dummy blocks down in last MCU */
/* Saved quantization table for component; NULL if none yet saved.
* See jdinput.c comments about the need for this information.
* This field is currently used only for decompression.
*/
JQUANT_TBL * quant_table;
/* Private per-component storage for DCT or IDCT subsystem. */
void * dct_table;
} jpeg_component_info;
/* The script for encoding a multiple-scan file is an array of these: */
typedef struct {
int comps_in_scan; /* number of components encoded in this scan */
int component_index[MAX_COMPS_IN_SCAN]; /* their SOF/comp_info[] indexes */
int Ss, Se; /* progressive JPEG spectral selection parms */
int Ah, Al; /* progressive JPEG successive approx. parms */
} jpeg_scan_info;
/* The decompressor can save APPn and COM markers in a list of these: */
typedef struct jpeg_marker_struct FAR * jpeg_saved_marker_ptr;
struct jpeg_marker_struct {
jpeg_saved_marker_ptr next; /* next in list, or NULL */
UINT8 marker; /* marker code: JPEG_COM, or JPEG_APP0+n */
unsigned int original_length; /* # bytes of data in the file */
unsigned int data_length; /* # bytes of data saved at data[] */
JOCTET FAR * data; /* the data contained in the marker */
/* the marker length word is not counted in data_length or original_length */
};
/* Known color spaces. */
typedef enum {
JCS_UNKNOWN, /* error/unspecified */
JCS_GRAYSCALE, /* monochrome */
JCS_RGB, /* red/green/blue, standard RGB (sRGB) */
JCS_YCbCr, /* Y/Cb/Cr (also known as YUV), standard YCC */
JCS_CMYK, /* C/M/Y/K */
JCS_YCCK, /* Y/Cb/Cr/K */
JCS_BG_RGB, /* big gamut red/green/blue, bg-sRGB */
JCS_BG_YCC /* big gamut Y/Cb/Cr, bg-sYCC */
} J_COLOR_SPACE;
/* Supported color transforms. */
typedef enum {
JCT_NONE = 0,
JCT_SUBTRACT_GREEN = 1
} J_COLOR_TRANSFORM;
/* DCT/IDCT algorithm options. */
typedef enum {
JDCT_ISLOW, /* slow but accurate integer algorithm */
JDCT_IFAST, /* faster, less accurate integer method */
JDCT_FLOAT /* floating-point: accurate, fast on fast HW */
} J_DCT_METHOD;
#ifndef JDCT_DEFAULT /* may be overridden in jconfig.h */
#define JDCT_DEFAULT JDCT_ISLOW
#endif
#ifndef JDCT_FASTEST /* may be overridden in jconfig.h */
#define JDCT_FASTEST JDCT_IFAST
#endif
/* Dithering options for decompression. */
typedef enum {
JDITHER_NONE, /* no dithering */
JDITHER_ORDERED, /* simple ordered dither */
JDITHER_FS /* Floyd-Steinberg error diffusion dither */
} J_DITHER_MODE;
/* Common fields between JPEG compression and decompression master structs. */
#define jpeg_common_fields \
struct jpeg_error_mgr * err; /* Error handler module */\
struct jpeg_memory_mgr * mem; /* Memory manager module */\
struct jpeg_progress_mgr * progress; /* Progress monitor, or NULL if none */\
void * client_data; /* Available for use by application */\
boolean is_decompressor; /* So common code can tell which is which */\
int global_state /* For checking call sequence validity */
/* Routines that are to be used by both halves of the library are declared
* to receive a pointer to this structure. There are no actual instances of
* jpeg_common_struct, only of jpeg_compress_struct and jpeg_decompress_struct.
*/
struct jpeg_common_struct {
jpeg_common_fields; /* Fields common to both master struct types */
/* Additional fields follow in an actual jpeg_compress_struct or
* jpeg_decompress_struct. All three structs must agree on these
* initial fields! (This would be a lot cleaner in C++.)
*/
};
typedef struct jpeg_common_struct * j_common_ptr;
typedef struct jpeg_compress_struct * j_compress_ptr;
typedef struct jpeg_decompress_struct * j_decompress_ptr;
/* Master record for a compression instance */
struct jpeg_compress_struct {
jpeg_common_fields; /* Fields shared with jpeg_decompress_struct */
/* Destination for compressed data */
struct jpeg_destination_mgr * dest;
/* Description of source image --- these fields must be filled in by
* outer application before starting compression. in_color_space must
* be correct before you can even call jpeg_set_defaults().
*/
JDIMENSION image_width; /* input image width */
JDIMENSION image_height; /* input image height */
int input_components; /* # of color components in input image */
J_COLOR_SPACE in_color_space; /* colorspace of input image */
double input_gamma; /* image gamma of input image */
/* Compression parameters --- these fields must be set before calling
* jpeg_start_compress(). We recommend calling jpeg_set_defaults() to
* initialize everything to reasonable defaults, then changing anything
* the application specifically wants to change. That way you won't get
* burnt when new parameters are added. Also note that there are several
* helper routines to simplify changing parameters.
*/
unsigned int scale_num, scale_denom; /* fraction by which to scale image */
JDIMENSION jpeg_width; /* scaled JPEG image width */
JDIMENSION jpeg_height; /* scaled JPEG image height */
/* Dimensions of actual JPEG image that will be written to file,
* derived from input dimensions by scaling factors above.
* These fields are computed by jpeg_start_compress().
* You can also use jpeg_calc_jpeg_dimensions() to determine these values
* in advance of calling jpeg_start_compress().
*/
int data_precision; /* bits of precision in image data */
int num_components; /* # of color components in JPEG image */
J_COLOR_SPACE jpeg_color_space; /* colorspace of JPEG image */
jpeg_component_info * comp_info;
/* comp_info[i] describes component that appears i'th in SOF */
JQUANT_TBL * quant_tbl_ptrs[NUM_QUANT_TBLS];
int q_scale_factor[NUM_QUANT_TBLS];
/* ptrs to coefficient quantization tables, or NULL if not defined,
* and corresponding scale factors (percentage, initialized 100).
*/
JHUFF_TBL * dc_huff_tbl_ptrs[NUM_HUFF_TBLS];
JHUFF_TBL * ac_huff_tbl_ptrs[NUM_HUFF_TBLS];
/* ptrs to Huffman coding tables, or NULL if not defined */
UINT8 arith_dc_L[NUM_ARITH_TBLS]; /* L values for DC arith-coding tables */
UINT8 arith_dc_U[NUM_ARITH_TBLS]; /* U values for DC arith-coding tables */
UINT8 arith_ac_K[NUM_ARITH_TBLS]; /* Kx values for AC arith-coding tables */
int num_scans; /* # of entries in scan_info array */
const jpeg_scan_info * scan_info; /* script for multi-scan file, or NULL */
/* The default value of scan_info is NULL, which causes a single-scan
* sequential JPEG file to be emitted. To create a multi-scan file,
* set num_scans and scan_info to point to an array of scan definitions.
*/
boolean raw_data_in; /* TRUE=caller supplies downsampled data */
boolean arith_code; /* TRUE=arithmetic coding, FALSE=Huffman */
boolean optimize_coding; /* TRUE=optimize entropy encoding parms */
boolean CCIR601_sampling; /* TRUE=first samples are cosited */
boolean do_fancy_downsampling; /* TRUE=apply fancy downsampling */
int smoothing_factor; /* 1..100, or 0 for no input smoothing */
J_DCT_METHOD dct_method; /* DCT algorithm selector */
/* The restart interval can be specified in absolute MCUs by setting
* restart_interval, or in MCU rows by setting restart_in_rows
* (in which case the correct restart_interval will be figured
* for each scan).
*/
unsigned int restart_interval; /* MCUs per restart, or 0 for no restart */
int restart_in_rows; /* if > 0, MCU rows per restart interval */
/* Parameters controlling emission of special markers. */
boolean write_JFIF_header; /* should a JFIF marker be written? */
UINT8 JFIF_major_version; /* What to write for the JFIF version number */
UINT8 JFIF_minor_version;
/* These three values are not used by the JPEG code, merely copied */
/* into the JFIF APP0 marker. density_unit can be 0 for unknown, */
/* 1 for dots/inch, or 2 for dots/cm. Note that the pixel aspect */
/* ratio is defined by X_density/Y_density even when density_unit=0. */
UINT8 density_unit; /* JFIF code for pixel size units */
UINT16 X_density; /* Horizontal pixel density */
UINT16 Y_density; /* Vertical pixel density */
boolean write_Adobe_marker; /* should an Adobe marker be written? */
J_COLOR_TRANSFORM color_transform;
/* Color transform identifier, writes LSE marker if nonzero */
/* State variable: index of next scanline to be written to
* jpeg_write_scanlines(). Application may use this to control its
* processing loop, e.g., "while (next_scanline < image_height)".
*/
JDIMENSION next_scanline; /* 0 .. image_height-1 */
/* Remaining fields are known throughout compressor, but generally
* should not be touched by a surrounding application.
*/
/*
* These fields are computed during compression startup
*/
boolean progressive_mode; /* TRUE if scan script uses progressive mode */
int max_h_samp_factor; /* largest h_samp_factor */
int max_v_samp_factor; /* largest v_samp_factor */
int min_DCT_h_scaled_size; /* smallest DCT_h_scaled_size of any component */
int min_DCT_v_scaled_size; /* smallest DCT_v_scaled_size of any component */
JDIMENSION total_iMCU_rows; /* # of iMCU rows to be input to coef ctlr */
/* The coefficient controller receives data in units of MCU rows as defined
* for fully interleaved scans (whether the JPEG file is interleaved or not).
* There are v_samp_factor * DCTSIZE sample rows of each component in an
* "iMCU" (interleaved MCU) row.
*/
/*
* These fields are valid during any one scan.
* They describe the components and MCUs actually appearing in the scan.
*/
int comps_in_scan; /* # of JPEG components in this scan */
jpeg_component_info * cur_comp_info[MAX_COMPS_IN_SCAN];
/* *cur_comp_info[i] describes component that appears i'th in SOS */
JDIMENSION MCUs_per_row; /* # of MCUs across the image */
JDIMENSION MCU_rows_in_scan; /* # of MCU rows in the image */
int blocks_in_MCU; /* # of DCT blocks per MCU */
int MCU_membership[C_MAX_BLOCKS_IN_MCU];
/* MCU_membership[i] is index in cur_comp_info of component owning */
/* i'th block in an MCU */
int Ss, Se, Ah, Al; /* progressive JPEG parameters for scan */
int block_size; /* the basic DCT block size: 1..16 */
const int * natural_order; /* natural-order position array */
int lim_Se; /* min( Se, DCTSIZE2-1 ) */
/*
* Links to compression subobjects (methods and private variables of modules)
*/
struct jpeg_comp_master * master;
struct jpeg_c_main_controller * main;
struct jpeg_c_prep_controller * prep;
struct jpeg_c_coef_controller * coef;
struct jpeg_marker_writer * marker;
struct jpeg_color_converter * cconvert;
struct jpeg_downsampler * downsample;
struct jpeg_forward_dct * fdct;
struct jpeg_entropy_encoder * entropy;
jpeg_scan_info * script_space; /* workspace for jpeg_simple_progression */
int script_space_size;
};
/* Master record for a decompression instance */
struct jpeg_decompress_struct {
jpeg_common_fields; /* Fields shared with jpeg_compress_struct */
/* Source of compressed data */
struct jpeg_source_mgr * src;
/* Basic description of image --- filled in by jpeg_read_header(). */
/* Application may inspect these values to decide how to process image. */
JDIMENSION image_width; /* nominal image width (from SOF marker) */
JDIMENSION image_height; /* nominal image height */
int num_components; /* # of color components in JPEG image */
J_COLOR_SPACE jpeg_color_space; /* colorspace of JPEG image */
/* Decompression processing parameters --- these fields must be set before
* calling jpeg_start_decompress(). Note that jpeg_read_header() initializes
* them to default values.
*/
J_COLOR_SPACE out_color_space; /* colorspace for output */
unsigned int scale_num, scale_denom; /* fraction by which to scale image */
double output_gamma; /* image gamma wanted in output */
boolean buffered_image; /* TRUE=multiple output passes */
boolean raw_data_out; /* TRUE=downsampled data wanted */
J_DCT_METHOD dct_method; /* IDCT algorithm selector */
boolean do_fancy_upsampling; /* TRUE=apply fancy upsampling */
boolean do_block_smoothing; /* TRUE=apply interblock smoothing */
boolean quantize_colors; /* TRUE=colormapped output wanted */
/* the following are ignored if not quantize_colors: */
J_DITHER_MODE dither_mode; /* type of color dithering to use */
boolean two_pass_quantize; /* TRUE=use two-pass color quantization */
int desired_number_of_colors; /* max # colors to use in created colormap */
/* these are significant only in buffered-image mode: */
boolean enable_1pass_quant; /* enable future use of 1-pass quantizer */
boolean enable_external_quant;/* enable future use of external colormap */
boolean enable_2pass_quant; /* enable future use of 2-pass quantizer */
/* Description of actual output image that will be returned to application.
* These fields are computed by jpeg_start_decompress().
* You can also use jpeg_calc_output_dimensions() to determine these values
* in advance of calling jpeg_start_decompress().
*/
JDIMENSION output_width; /* scaled image width */
JDIMENSION output_height; /* scaled image height */
int out_color_components; /* # of color components in out_color_space */
int output_components; /* # of color components returned */
/* output_components is 1 (a colormap index) when quantizing colors;
* otherwise it equals out_color_components.
*/
int rec_outbuf_height; /* min recommended height of scanline buffer */
/* If the buffer passed to jpeg_read_scanlines() is less than this many rows
* high, space and time will be wasted due to unnecessary data copying.
* Usually rec_outbuf_height will be 1 or 2, at most 4.
*/
/* When quantizing colors, the output colormap is described by these fields.
* The application can supply a colormap by setting colormap non-NULL before
* calling jpeg_start_decompress; otherwise a colormap is created during
* jpeg_start_decompress or jpeg_start_output.
* The map has out_color_components rows and actual_number_of_colors columns.
*/
int actual_number_of_colors; /* number of entries in use */
JSAMPARRAY colormap; /* The color map as a 2-D pixel array */
/* State variables: these variables indicate the progress of decompression.
* The application may examine these but must not modify them.
*/
/* Row index of next scanline to be read from jpeg_read_scanlines().
* Application may use this to control its processing loop, e.g.,
* "while (output_scanline < output_height)".
*/
JDIMENSION output_scanline; /* 0 .. output_height-1 */
/* Current input scan number and number of iMCU rows completed in scan.
* These indicate the progress of the decompressor input side.
*/
int input_scan_number; /* Number of SOS markers seen so far */
JDIMENSION input_iMCU_row; /* Number of iMCU rows completed */
/* The "output scan number" is the notional scan being displayed by the
* output side. The decompressor will not allow output scan/row number
* to get ahead of input scan/row, but it can fall arbitrarily far behind.
*/
int output_scan_number; /* Nominal scan number being displayed */
JDIMENSION output_iMCU_row; /* Number of iMCU rows read */
/* Current progression status. coef_bits[c][i] indicates the precision
* with which component c's DCT coefficient i (in zigzag order) is known.
* It is -1 when no data has yet been received, otherwise it is the point
* transform (shift) value for the most recent scan of the coefficient
* (thus, 0 at completion of the progression).
* This pointer is NULL when reading a non-progressive file.
*/
int (*coef_bits)[DCTSIZE2]; /* -1 or current Al value for each coef */
/* Internal JPEG parameters --- the application usually need not look at
* these fields. Note that the decompressor output side may not use
* any parameters that can change between scans.
*/
/* Quantization and Huffman tables are carried forward across input
* datastreams when processing abbreviated JPEG datastreams.
*/
JQUANT_TBL * quant_tbl_ptrs[NUM_QUANT_TBLS];
/* ptrs to coefficient quantization tables, or NULL if not defined */
JHUFF_TBL * dc_huff_tbl_ptrs[NUM_HUFF_TBLS];
JHUFF_TBL * ac_huff_tbl_ptrs[NUM_HUFF_TBLS];
/* ptrs to Huffman coding tables, or NULL if not defined */
/* These parameters are never carried across datastreams, since they
* are given in SOF/SOS markers or defined to be reset by SOI.
*/
int data_precision; /* bits of precision in image data */
jpeg_component_info * comp_info;
/* comp_info[i] describes component that appears i'th in SOF */
boolean is_baseline; /* TRUE if Baseline SOF0 encountered */
boolean progressive_mode; /* TRUE if SOFn specifies progressive mode */
boolean arith_code; /* TRUE=arithmetic coding, FALSE=Huffman */
UINT8 arith_dc_L[NUM_ARITH_TBLS]; /* L values for DC arith-coding tables */
UINT8 arith_dc_U[NUM_ARITH_TBLS]; /* U values for DC arith-coding tables */
UINT8 arith_ac_K[NUM_ARITH_TBLS]; /* Kx values for AC arith-coding tables */
unsigned int restart_interval; /* MCUs per restart interval, or 0 for no restart */
/* These fields record data obtained from optional markers recognized by
* the JPEG library.
*/
boolean saw_JFIF_marker; /* TRUE iff a JFIF APP0 marker was found */
/* Data copied from JFIF marker; only valid if saw_JFIF_marker is TRUE: */
UINT8 JFIF_major_version; /* JFIF version number */
UINT8 JFIF_minor_version;
UINT8 density_unit; /* JFIF code for pixel size units */
UINT16 X_density; /* Horizontal pixel density */
UINT16 Y_density; /* Vertical pixel density */
boolean saw_Adobe_marker; /* TRUE iff an Adobe APP14 marker was found */
UINT8 Adobe_transform; /* Color transform code from Adobe marker */
J_COLOR_TRANSFORM color_transform;
/* Color transform identifier derived from LSE marker, otherwise zero */
boolean CCIR601_sampling; /* TRUE=first samples are cosited */
/* Aside from the specific data retained from APPn markers known to the
* library, the uninterpreted contents of any or all APPn and COM markers
* can be saved in a list for examination by the application.
*/
jpeg_saved_marker_ptr marker_list; /* Head of list of saved markers */
/* Remaining fields are known throughout decompressor, but generally
* should not be touched by a surrounding application.
*/
/*
* These fields are computed during decompression startup
*/
int max_h_samp_factor; /* largest h_samp_factor */
int max_v_samp_factor; /* largest v_samp_factor */
int min_DCT_h_scaled_size; /* smallest DCT_h_scaled_size of any component */
int min_DCT_v_scaled_size; /* smallest DCT_v_scaled_size of any component */
JDIMENSION total_iMCU_rows; /* # of iMCU rows in image */
/* The coefficient controller's input and output progress is measured in
* units of "iMCU" (interleaved MCU) rows. These are the same as MCU rows
* in fully interleaved JPEG scans, but are used whether the scan is
* interleaved or not. We define an iMCU row as v_samp_factor DCT block
* rows of each component. Therefore, the IDCT output contains
* v_samp_factor*DCT_v_scaled_size sample rows of a component per iMCU row.
*/
JSAMPLE * sample_range_limit; /* table for fast range-limiting */
/*
* These fields are valid during any one scan.
* They describe the components and MCUs actually appearing in the scan.
* Note that the decompressor output side must not use these fields.
*/
int comps_in_scan; /* # of JPEG components in this scan */
jpeg_component_info * cur_comp_info[MAX_COMPS_IN_SCAN];
/* *cur_comp_info[i] describes component that appears i'th in SOS */
JDIMENSION MCUs_per_row; /* # of MCUs across the image */
JDIMENSION MCU_rows_in_scan; /* # of MCU rows in the image */
int blocks_in_MCU; /* # of DCT blocks per MCU */
int MCU_membership[D_MAX_BLOCKS_IN_MCU];
/* MCU_membership[i] is index in cur_comp_info of component owning */
/* i'th block in an MCU */
int Ss, Se, Ah, Al; /* progressive JPEG parameters for scan */
/* These fields are derived from Se of first SOS marker.
*/
int block_size; /* the basic DCT block size: 1..16 */
const int * natural_order; /* natural-order position array for entropy decode */
int lim_Se; /* min( Se, DCTSIZE2-1 ) for entropy decode */
/* This field is shared between entropy decoder and marker parser.
* It is either zero or the code of a JPEG marker that has been
* read from the data source, but has not yet been processed.
*/
int unread_marker;
/*
* Links to decompression subobjects (methods, private variables of modules)
*/
struct jpeg_decomp_master * master;
struct jpeg_d_main_controller * main;
struct jpeg_d_coef_controller * coef;
struct jpeg_d_post_controller * post;
struct jpeg_input_controller * inputctl;
struct jpeg_marker_reader * marker;
struct jpeg_entropy_decoder * entropy;
struct jpeg_inverse_dct * idct;
struct jpeg_upsampler * upsample;
struct jpeg_color_deconverter * cconvert;
struct jpeg_color_quantizer * cquantize;
};
/* "Object" declarations for JPEG modules that may be supplied or called
* directly by the surrounding application.
* As with all objects in the JPEG library, these structs only define the
* publicly visible methods and state variables of a module. Additional
* private fields may exist after the public ones.
*/
/* Error handler object */
struct jpeg_error_mgr {
/* Error exit handler: does not return to caller */
JMETHOD(noreturn_t, error_exit, (j_common_ptr cinfo));
/* Conditionally emit a trace or warning message */
JMETHOD(void, emit_message, (j_common_ptr cinfo, int msg_level));
/* Routine that actually outputs a trace or error message */
JMETHOD(void, output_message, (j_common_ptr cinfo));
/* Format a message string for the most recent JPEG error or message */
JMETHOD(void, format_message, (j_common_ptr cinfo, char * buffer));
#define JMSG_LENGTH_MAX 200 /* recommended size of format_message buffer */
/* Reset error state variables at start of a new image */
JMETHOD(void, reset_error_mgr, (j_common_ptr cinfo));
/* The message ID code and any parameters are saved here.
* A message can have one string parameter or up to 8 int parameters.
*/
int msg_code;
#define JMSG_STR_PARM_MAX 80
union {
int i[8];
char s[JMSG_STR_PARM_MAX];
} msg_parm;
/* Standard state variables for error facility */
int trace_level; /* max msg_level that will be displayed */
/* For recoverable corrupt-data errors, we emit a warning message,
* but keep going unless emit_message chooses to abort. emit_message
* should count warnings in num_warnings. The surrounding application
* can check for bad data by seeing if num_warnings is nonzero at the
* end of processing.
*/
long num_warnings; /* number of corrupt-data warnings */
/* These fields point to the table(s) of error message strings.
* An application can change the table pointer to switch to a different
* message list (typically, to change the language in which errors are
* reported). Some applications may wish to add additional error codes
* that will be handled by the JPEG library error mechanism; the second
* table pointer is used for this purpose.
*
* First table includes all errors generated by JPEG library itself.
* Error code 0 is reserved for a "no such error string" message.
*/
const char * const * jpeg_message_table; /* Library errors */
int last_jpeg_message; /* Table contains strings 0..last_jpeg_message */
/* Second table can be added by application (see cjpeg/djpeg for example).
* It contains strings numbered first_addon_message..last_addon_message.
*/
const char * const * addon_message_table; /* Non-library errors */
int first_addon_message; /* code for first string in addon table */
int last_addon_message; /* code for last string in addon table */
};
/* Progress monitor object */
struct jpeg_progress_mgr {
JMETHOD(void, progress_monitor, (j_common_ptr cinfo));
long pass_counter; /* work units completed in this pass */
long pass_limit; /* total number of work units in this pass */
int completed_passes; /* passes completed so far */
int total_passes; /* total number of passes expected */
};
/* Data destination object for compression */
struct jpeg_destination_mgr {
JOCTET * next_output_byte; /* => next byte to write in buffer */
size_t free_in_buffer; /* # of byte spaces remaining in buffer */
JMETHOD(void, init_destination, (j_compress_ptr cinfo));
JMETHOD(boolean, empty_output_buffer, (j_compress_ptr cinfo));
JMETHOD(void, term_destination, (j_compress_ptr cinfo));
};
/* Data source object for decompression */
struct jpeg_source_mgr {
const JOCTET * next_input_byte; /* => next byte to read from buffer */
size_t bytes_in_buffer; /* # of bytes remaining in buffer */
JMETHOD(void, init_source, (j_decompress_ptr cinfo));
JMETHOD(boolean, fill_input_buffer, (j_decompress_ptr cinfo));
JMETHOD(void, skip_input_data, (j_decompress_ptr cinfo, long num_bytes));
JMETHOD(boolean, resync_to_restart, (j_decompress_ptr cinfo, int desired));
JMETHOD(void, term_source, (j_decompress_ptr cinfo));
};
/* Memory manager object.
* Allocates "small" objects (a few K total), "large" objects (tens of K),
* and "really big" objects (virtual arrays with backing store if needed).
* The memory manager does not allow individual objects to be freed; rather,
* each created object is assigned to a pool, and whole pools can be freed
* at once. This is faster and more convenient than remembering exactly what
* to free, especially where malloc()/free() are not too speedy.
* NB: alloc routines never return NULL. They exit to error_exit if not
* successful.
*/
#define JPOOL_PERMANENT 0 /* lasts until master record is destroyed */
#define JPOOL_IMAGE 1 /* lasts until done with image/datastream */
#define JPOOL_NUMPOOLS 2
typedef struct jvirt_sarray_control * jvirt_sarray_ptr;
typedef struct jvirt_barray_control * jvirt_barray_ptr;
struct jpeg_memory_mgr {
/* Method pointers */
JMETHOD(void *, alloc_small, (j_common_ptr cinfo, int pool_id,
size_t sizeofobject));
JMETHOD(void FAR *, alloc_large, (j_common_ptr cinfo, int pool_id,
size_t sizeofobject));
JMETHOD(JSAMPARRAY, alloc_sarray, (j_common_ptr cinfo, int pool_id,
JDIMENSION samplesperrow,
JDIMENSION numrows));
JMETHOD(JBLOCKARRAY, alloc_barray, (j_common_ptr cinfo, int pool_id,
JDIMENSION blocksperrow,
JDIMENSION numrows));
JMETHOD(jvirt_sarray_ptr, request_virt_sarray, (j_common_ptr cinfo,
int pool_id,
boolean pre_zero,
JDIMENSION samplesperrow,
JDIMENSION numrows,
JDIMENSION maxaccess));
JMETHOD(jvirt_barray_ptr, request_virt_barray, (j_common_ptr cinfo,
int pool_id,
boolean pre_zero,
JDIMENSION blocksperrow,
JDIMENSION numrows,
JDIMENSION maxaccess));
JMETHOD(void, realize_virt_arrays, (j_common_ptr cinfo));
JMETHOD(JSAMPARRAY, access_virt_sarray, (j_common_ptr cinfo,
jvirt_sarray_ptr ptr,
JDIMENSION start_row,
JDIMENSION num_rows,
boolean writable));
JMETHOD(JBLOCKARRAY, access_virt_barray, (j_common_ptr cinfo,
jvirt_barray_ptr ptr,
JDIMENSION start_row,
JDIMENSION num_rows,
boolean writable));
JMETHOD(void, free_pool, (j_common_ptr cinfo, int pool_id));
JMETHOD(void, self_destruct, (j_common_ptr cinfo));
/* Limit on memory allocation for this JPEG object. (Note that this is
* merely advisory, not a guaranteed maximum; it only affects the space
* used for virtual-array buffers.) May be changed by outer application
* after creating the JPEG object.
*/
long max_memory_to_use;
/* Maximum allocation request accepted by alloc_large. */
long max_alloc_chunk;
};
/* Routine signature for application-supplied marker processing methods.
* Need not pass marker code since it is stored in cinfo->unread_marker.
*/
typedef JMETHOD(boolean, jpeg_marker_parser_method, (j_decompress_ptr cinfo));
/* Declarations for routines called by application.
* The JPP macro hides prototype parameters from compilers that can't cope.
* Note JPP requires double parentheses.
*/
#ifdef HAVE_PROTOTYPES
#define JPP(arglist) arglist
#else
#define JPP(arglist) ()
#endif
/* Short forms of external names for systems with brain-damaged linkers.
* We shorten external names to be unique in the first six letters, which
* is good enough for all known systems.
* (If your compiler itself needs names to be unique in less than 15
* characters, you are out of luck. Get a better compiler.)
*/
#ifdef NEED_SHORT_EXTERNAL_NAMES
#define jpeg_std_error jStdError
#define jpeg_CreateCompress jCreaCompress
#define jpeg_CreateDecompress jCreaDecompress
#define jpeg_destroy_compress jDestCompress
#define jpeg_destroy_decompress jDestDecompress
#define jpeg_stdio_dest jStdDest
#define jpeg_stdio_src jStdSrc
#define jpeg_mem_dest jMemDest
#define jpeg_mem_src jMemSrc
#define jpeg_set_defaults jSetDefaults
#define jpeg_set_colorspace jSetColorspace
#define jpeg_default_colorspace jDefColorspace
#define jpeg_set_quality jSetQuality
#define jpeg_set_linear_quality jSetLQuality
#define jpeg_default_qtables jDefQTables
#define jpeg_add_quant_table jAddQuantTable
#define jpeg_quality_scaling jQualityScaling
#define jpeg_simple_progression jSimProgress
#define jpeg_suppress_tables jSuppressTables
#define jpeg_alloc_quant_table jAlcQTable
#define jpeg_alloc_huff_table jAlcHTable
#define jpeg_start_compress jStrtCompress
#define jpeg_write_scanlines jWrtScanlines
#define jpeg_finish_compress jFinCompress
#define jpeg_calc_jpeg_dimensions jCjpegDimensions
#define jpeg_write_raw_data jWrtRawData
#define jpeg_write_marker jWrtMarker
#define jpeg_write_m_header jWrtMHeader
#define jpeg_write_m_byte jWrtMByte
#define jpeg_write_tables jWrtTables
#define jpeg_read_header jReadHeader
#define jpeg_start_decompress jStrtDecompress
#define jpeg_read_scanlines jReadScanlines
#define jpeg_finish_decompress jFinDecompress
#define jpeg_read_raw_data jReadRawData
#define jpeg_has_multiple_scans jHasMultScn
#define jpeg_start_output jStrtOutput
#define jpeg_finish_output jFinOutput
#define jpeg_input_complete jInComplete
#define jpeg_new_colormap jNewCMap
#define jpeg_consume_input jConsumeInput
#define jpeg_core_output_dimensions jCoreDimensions
#define jpeg_calc_output_dimensions jCalcDimensions
#define jpeg_save_markers jSaveMarkers
#define jpeg_set_marker_processor jSetMarker
#define jpeg_read_coefficients jReadCoefs
#define jpeg_write_coefficients jWrtCoefs
#define jpeg_copy_critical_parameters jCopyCrit
#define jpeg_abort_compress jAbrtCompress
#define jpeg_abort_decompress jAbrtDecompress
#define jpeg_abort jAbort
#define jpeg_destroy jDestroy
#define jpeg_resync_to_restart jResyncRestart
#endif /* NEED_SHORT_EXTERNAL_NAMES */
/* Default error-management setup */
EXTERN(struct jpeg_error_mgr *) jpeg_std_error
JPP((struct jpeg_error_mgr * err));
/* Initialization of JPEG compression objects.
* jpeg_create_compress() and jpeg_create_decompress() are the exported
* names that applications should call. These expand to calls on
* jpeg_CreateCompress and jpeg_CreateDecompress with additional information
* passed for version mismatch checking.
* NB: you must set up the error-manager BEFORE calling jpeg_create_xxx.
*/
#define jpeg_create_compress(cinfo) \
jpeg_CreateCompress((cinfo), JPEG_LIB_VERSION, \
(size_t) sizeof(struct jpeg_compress_struct))
#define jpeg_create_decompress(cinfo) \
jpeg_CreateDecompress((cinfo), JPEG_LIB_VERSION, \
(size_t) sizeof(struct jpeg_decompress_struct))
EXTERN(void) jpeg_CreateCompress JPP((j_compress_ptr cinfo,
int version, size_t structsize));
EXTERN(void) jpeg_CreateDecompress JPP((j_decompress_ptr cinfo,
int version, size_t structsize));
/* Destruction of JPEG compression objects */
EXTERN(void) jpeg_destroy_compress JPP((j_compress_ptr cinfo));
EXTERN(void) jpeg_destroy_decompress JPP((j_decompress_ptr cinfo));
/* Standard data source and destination managers: stdio streams. */
/* Caller is responsible for opening the file before and closing after. */
EXTERN(void) jpeg_stdio_dest JPP((j_compress_ptr cinfo, FILE * outfile));
EXTERN(void) jpeg_stdio_src JPP((j_decompress_ptr cinfo, FILE * infile));
/* Data source and destination managers: memory buffers. */
EXTERN(void) jpeg_mem_dest JPP((j_compress_ptr cinfo,
unsigned char ** outbuffer,
unsigned long * outsize));
EXTERN(void) jpeg_mem_src JPP((j_decompress_ptr cinfo,
unsigned char * inbuffer,
unsigned long insize));
/* Default parameter setup for compression */
EXTERN(void) jpeg_set_defaults JPP((j_compress_ptr cinfo));
/* Compression parameter setup aids */
EXTERN(void) jpeg_set_colorspace JPP((j_compress_ptr cinfo,
J_COLOR_SPACE colorspace));
EXTERN(void) jpeg_default_colorspace JPP((j_compress_ptr cinfo));
EXTERN(void) jpeg_set_quality JPP((j_compress_ptr cinfo, int quality,
boolean force_baseline));
EXTERN(void) jpeg_set_linear_quality JPP((j_compress_ptr cinfo,
int scale_factor,
boolean force_baseline));
EXTERN(void) jpeg_default_qtables JPP((j_compress_ptr cinfo,
boolean force_baseline));
EXTERN(void) jpeg_add_quant_table JPP((j_compress_ptr cinfo, int which_tbl,
const unsigned int *basic_table,
int scale_factor,
boolean force_baseline));
EXTERN(int) jpeg_quality_scaling JPP((int quality));
EXTERN(void) jpeg_simple_progression JPP((j_compress_ptr cinfo));
EXTERN(void) jpeg_suppress_tables JPP((j_compress_ptr cinfo,
boolean suppress));
EXTERN(JQUANT_TBL *) jpeg_alloc_quant_table JPP((j_common_ptr cinfo));
EXTERN(JHUFF_TBL *) jpeg_alloc_huff_table JPP((j_common_ptr cinfo));
/* Main entry points for compression */
EXTERN(void) jpeg_start_compress JPP((j_compress_ptr cinfo,
boolean write_all_tables));
EXTERN(JDIMENSION) jpeg_write_scanlines JPP((j_compress_ptr cinfo,
JSAMPARRAY scanlines,
JDIMENSION num_lines));
EXTERN(void) jpeg_finish_compress JPP((j_compress_ptr cinfo));
/* Precalculate JPEG dimensions for current compression parameters. */
EXTERN(void) jpeg_calc_jpeg_dimensions JPP((j_compress_ptr cinfo));
/* Replaces jpeg_write_scanlines when writing raw downsampled data. */
EXTERN(JDIMENSION) jpeg_write_raw_data JPP((j_compress_ptr cinfo,
JSAMPIMAGE data,
JDIMENSION num_lines));
/* Write a special marker. See libjpeg.txt concerning safe usage. */
EXTERN(void) jpeg_write_marker
JPP((j_compress_ptr cinfo, int marker,
const JOCTET * dataptr, unsigned int datalen));
/* Same, but piecemeal. */
EXTERN(void) jpeg_write_m_header
JPP((j_compress_ptr cinfo, int marker, unsigned int datalen));
EXTERN(void) jpeg_write_m_byte
JPP((j_compress_ptr cinfo, int val));
/* Alternate compression function: just write an abbreviated table file */
EXTERN(void) jpeg_write_tables JPP((j_compress_ptr cinfo));
/* Decompression startup: read start of JPEG datastream to see what's there */
EXTERN(int) jpeg_read_header JPP((j_decompress_ptr cinfo,
boolean require_image));
/* Return value is one of: */
#define JPEG_SUSPENDED 0 /* Suspended due to lack of input data */
#define JPEG_HEADER_OK 1 /* Found valid image datastream */
#define JPEG_HEADER_TABLES_ONLY 2 /* Found valid table-specs-only datastream */
/* If you pass require_image = TRUE (normal case), you need not check for
* a TABLES_ONLY return code; an abbreviated file will cause an error exit.
* JPEG_SUSPENDED is only possible if you use a data source module that can
* give a suspension return (the stdio source module doesn't).
*/
/* Main entry points for decompression */
EXTERN(boolean) jpeg_start_decompress JPP((j_decompress_ptr cinfo));
EXTERN(JDIMENSION) jpeg_read_scanlines JPP((j_decompress_ptr cinfo,
JSAMPARRAY scanlines,
JDIMENSION max_lines));
EXTERN(boolean) jpeg_finish_decompress JPP((j_decompress_ptr cinfo));
/* Replaces jpeg_read_scanlines when reading raw downsampled data. */
EXTERN(JDIMENSION) jpeg_read_raw_data JPP((j_decompress_ptr cinfo,
JSAMPIMAGE data,
JDIMENSION max_lines));
/* Additional entry points for buffered-image mode. */
EXTERN(boolean) jpeg_has_multiple_scans JPP((j_decompress_ptr cinfo));
EXTERN(boolean) jpeg_start_output JPP((j_decompress_ptr cinfo,
int scan_number));
EXTERN(boolean) jpeg_finish_output JPP((j_decompress_ptr cinfo));
EXTERN(boolean) jpeg_input_complete JPP((j_decompress_ptr cinfo));
EXTERN(void) jpeg_new_colormap JPP((j_decompress_ptr cinfo));
EXTERN(int) jpeg_consume_input JPP((j_decompress_ptr cinfo));
/* Return value is one of: */
/* #define JPEG_SUSPENDED 0 Suspended due to lack of input data */
#define JPEG_REACHED_SOS 1 /* Reached start of new scan */
#define JPEG_REACHED_EOI 2 /* Reached end of image */
#define JPEG_ROW_COMPLETED 3 /* Completed one iMCU row */
#define JPEG_SCAN_COMPLETED 4 /* Completed last iMCU row of a scan */
/* Precalculate output dimensions for current decompression parameters. */
EXTERN(void) jpeg_core_output_dimensions JPP((j_decompress_ptr cinfo));
EXTERN(void) jpeg_calc_output_dimensions JPP((j_decompress_ptr cinfo));
/* Control saving of COM and APPn markers into marker_list. */
EXTERN(void) jpeg_save_markers
JPP((j_decompress_ptr cinfo, int marker_code,
unsigned int length_limit));
/* Install a special processing method for COM or APPn markers. */
EXTERN(void) jpeg_set_marker_processor
JPP((j_decompress_ptr cinfo, int marker_code,
jpeg_marker_parser_method routine));
/* Read or write raw DCT coefficients --- useful for lossless transcoding. */
EXTERN(jvirt_barray_ptr *) jpeg_read_coefficients JPP((j_decompress_ptr cinfo));
EXTERN(void) jpeg_write_coefficients JPP((j_compress_ptr cinfo,
jvirt_barray_ptr * coef_arrays));
EXTERN(void) jpeg_copy_critical_parameters JPP((j_decompress_ptr srcinfo,
j_compress_ptr dstinfo));
/* If you choose to abort compression or decompression before completing
* jpeg_finish_(de)compress, then you need to clean up to release memory,
* temporary files, etc. You can just call jpeg_destroy_(de)compress
* if you're done with the JPEG object, but if you want to clean it up and
* reuse it, call this:
*/
EXTERN(void) jpeg_abort_compress JPP((j_compress_ptr cinfo));
EXTERN(void) jpeg_abort_decompress JPP((j_decompress_ptr cinfo));
/* Generic versions of jpeg_abort and jpeg_destroy that work on either
* flavor of JPEG object. These may be more convenient in some places.
*/
EXTERN(void) jpeg_abort JPP((j_common_ptr cinfo));
EXTERN(void) jpeg_destroy JPP((j_common_ptr cinfo));
/* Default restart-marker-resync procedure for use by data source modules */
EXTERN(boolean) jpeg_resync_to_restart JPP((j_decompress_ptr cinfo,
int desired));
/* These marker codes are exported since applications and data source modules
* are likely to want to use them.
*/
#define JPEG_RST0 0xD0 /* RST0 marker code */
#define JPEG_EOI 0xD9 /* EOI marker code */
#define JPEG_APP0 0xE0 /* APP0 marker code */
#define JPEG_COM 0xFE /* COM marker code */
/* If we have a brain-damaged compiler that emits warnings (or worse, errors)
* for structure definitions that are never filled in, keep it quiet by
* supplying dummy definitions for the various substructures.
*/
#ifdef INCOMPLETE_TYPES_BROKEN
#ifndef JPEG_INTERNALS /* will be defined in jpegint.h */
struct jvirt_sarray_control {
long dummy; };
struct jvirt_barray_control {
long dummy; };
struct jpeg_comp_master {
long dummy; };
struct jpeg_c_main_controller {
long dummy; };
struct jpeg_c_prep_controller {
long dummy; };
struct jpeg_c_coef_controller {
long dummy; };
struct jpeg_marker_writer {
long dummy; };
struct jpeg_color_converter {
long dummy; };
struct jpeg_downsampler {
long dummy; };
struct jpeg_forward_dct {
long dummy; };
struct jpeg_entropy_encoder {
long dummy; };
struct jpeg_decomp_master {
long dummy; };
struct jpeg_d_main_controller {
long dummy; };
struct jpeg_d_coef_controller {
long dummy; };
struct jpeg_d_post_controller {
long dummy; };
struct jpeg_input_controller {
long dummy; };
struct jpeg_marker_reader {
long dummy; };
struct jpeg_entropy_decoder {
long dummy; };
struct jpeg_inverse_dct {
long dummy; };
struct jpeg_upsampler {
long dummy; };
struct jpeg_color_deconverter {
long dummy; };
struct jpeg_color_quantizer {
long dummy; };
#endif /* JPEG_INTERNALS */
#endif /* INCOMPLETE_TYPES_BROKEN */
/*
* The JPEG library modules define JPEG_INTERNALS before including this file.
* The internal structure declarations are read only when that is true.
* Applications using the library should not include jpegint.h, but may wish
* to include jerror.h.
*/
#ifdef JPEG_INTERNALS
#include "jpegint.h" /* fetch private declarations */
#include "jerror.h" /* fetch error codes too */
#endif
#ifdef __cplusplus
#ifndef DONT_USE_EXTERN_C
}
#endif
#endif
#endif /* JPEGLIB_H */
2.【jmorecfg.h】
/*
* jmorecfg.h
*
* Copyright (C) 1991-1997, Thomas G. Lane.
* Modified 1997-2013 by Guido Vollbeding.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
* This file contains additional configuration options that customize the
* JPEG software for special applications or support machine-dependent
* optimizations. Most users will not need to touch this file.
*/
/*
* Define BITS_IN_JSAMPLE as either
* 8 for 8-bit sample values (the usual setting)
* 9 for 9-bit sample values
* 10 for 10-bit sample values
* 11 for 11-bit sample values
* 12 for 12-bit sample values
* Only 8, 9, 10, 11, and 12 bits sample data precision are supported for
* full-feature DCT processing. Further depths up to 16-bit may be added
* later for the lossless modes of operation.
* Run-time selection and conversion of data precision will be added later
* and are currently not supported, sorry.
* Exception: The transcoding part (jpegtran) supports all settings in a
* single instance, since it operates on the level of DCT coefficients and
* not sample values. The DCT coefficients are of the same type (16 bits)
* in all cases (see below).
*/
#define BITS_IN_JSAMPLE 8 /* use 8, 9, 10, 11, or 12 */
/*
* Maximum number of components (color channels) allowed in JPEG image.
* To meet the letter of the JPEG spec, set this to 255. However, darn
* few applications need more than 4 channels (maybe 5 for CMYK + alpha
* mask). We recommend 10 as a reasonable compromise; use 4 if you are
* really short on memory. (Each allowed component costs a hundred or so
* bytes of storage, whether actually used in an image or not.)
*/
#define MAX_COMPONENTS 10 /* maximum number of image components */
/*
* Basic data types.
* You may need to change these if you have a machine with unusual data
* type sizes; for example, "char" not 8 bits, "short" not 16 bits,
* or "long" not 32 bits. We don't care whether "int" is 16 or 32 bits,
* but it had better be at least 16.
*/
/* Representation of a single sample (pixel element value).
* We frequently allocate large arrays of these, so it's important to keep
* them small. But if you have memory to burn and access to char or short
* arrays is very slow on your hardware, you might want to change these.
*/
#if BITS_IN_JSAMPLE == 8
/* JSAMPLE should be the smallest type that will hold the values 0..255.
* You can use a signed char by having GETJSAMPLE mask it with 0xFF.
*/
#ifdef HAVE_UNSIGNED_CHAR
typedef unsigned char JSAMPLE;
#define GETJSAMPLE(value) ((int) (value))
#else /* not HAVE_UNSIGNED_CHAR */
typedef char JSAMPLE;
#ifdef CHAR_IS_UNSIGNED
#define GETJSAMPLE(value) ((int) (value))
#else
#define GETJSAMPLE(value) ((int) (value) & 0xFF)
#endif /* CHAR_IS_UNSIGNED */
#endif /* HAVE_UNSIGNED_CHAR */
#define MAXJSAMPLE 255
#define CENTERJSAMPLE 128
#endif /* BITS_IN_JSAMPLE == 8 */
#if BITS_IN_JSAMPLE == 9
/* JSAMPLE should be the smallest type that will hold the values 0..511.
* On nearly all machines "short" will do nicely.
*/
typedef short JSAMPLE;
#define GETJSAMPLE(value) ((int) (value))
#define MAXJSAMPLE 511
#define CENTERJSAMPLE 256
#endif /* BITS_IN_JSAMPLE == 9 */
#if BITS_IN_JSAMPLE == 10
/* JSAMPLE should be the smallest type that will hold the values 0..1023.
* On nearly all machines "short" will do nicely.
*/
typedef short JSAMPLE;
#define GETJSAMPLE(value) ((int) (value))
#define MAXJSAMPLE 1023
#define CENTERJSAMPLE 512
#endif /* BITS_IN_JSAMPLE == 10 */
#if BITS_IN_JSAMPLE == 11
/* JSAMPLE should be the smallest type that will hold the values 0..2047.
* On nearly all machines "short" will do nicely.
*/
typedef short JSAMPLE;
#define GETJSAMPLE(value) ((int) (value))
#define MAXJSAMPLE 2047
#define CENTERJSAMPLE 1024
#endif /* BITS_IN_JSAMPLE == 11 */
#if BITS_IN_JSAMPLE == 12
/* JSAMPLE should be the smallest type that will hold the values 0..4095.
* On nearly all machines "short" will do nicely.
*/
typedef short JSAMPLE;
#define GETJSAMPLE(value) ((int) (value))
#define MAXJSAMPLE 4095
#define CENTERJSAMPLE 2048
#endif /* BITS_IN_JSAMPLE == 12 */
/* Representation of a DCT frequency coefficient.
* This should be a signed value of at least 16 bits; "short" is usually OK.
* Again, we allocate large arrays of these, but you can change to int
* if you have memory to burn and "short" is really slow.
*/
typedef short JCOEF;
/* Compressed datastreams are represented as arrays of JOCTET.
* These must be EXACTLY 8 bits wide, at least once they are written to
* external storage. Note that when using the stdio data source/destination
* managers, this is also the data type passed to fread/fwrite.
*/
#ifdef HAVE_UNSIGNED_CHAR
typedef unsigned char JOCTET;
#define GETJOCTET(value) (value)
#else /* not HAVE_UNSIGNED_CHAR */
typedef char JOCTET;
#ifdef CHAR_IS_UNSIGNED
#define GETJOCTET(value) (value)
#else
#define GETJOCTET(value) ((value) & 0xFF)
#endif /* CHAR_IS_UNSIGNED */
#endif /* HAVE_UNSIGNED_CHAR */
/* These typedefs are used for various table entries and so forth.
* They must be at least as wide as specified; but making them too big
* won't cost a huge amount of memory, so we don't provide special
* extraction code like we did for JSAMPLE. (In other words, these
* typedefs live at a different point on the speed/space tradeoff curve.)
*/
/* UINT8 must hold at least the values 0..255. */
#ifdef HAVE_UNSIGNED_CHAR
typedef unsigned char UINT8;
#else /* not HAVE_UNSIGNED_CHAR */
#ifdef CHAR_IS_UNSIGNED
typedef char UINT8;
#else /* not CHAR_IS_UNSIGNED */
typedef short UINT8;
#endif /* CHAR_IS_UNSIGNED */
#endif /* HAVE_UNSIGNED_CHAR */
/* UINT16 must hold at least the values 0..65535. */
#ifdef HAVE_UNSIGNED_SHORT
typedef unsigned short UINT16;
#else /* not HAVE_UNSIGNED_SHORT */
typedef unsigned int UINT16;
#endif /* HAVE_UNSIGNED_SHORT */
/* INT16 must hold at least the values -32768..32767. */
#ifndef XMD_H /* X11/xmd.h correctly defines INT16 */
typedef short INT16;
#endif
/* INT32 must hold at least signed 32-bit values. */
#ifndef XMD_H /* X11/xmd.h correctly defines INT32 */
#ifndef _BASETSD_H_ /* Microsoft defines it in basetsd.h */
#ifndef _BASETSD_H /* MinGW is slightly different */
#ifndef QGLOBAL_H /* Qt defines it in qglobal.h */
typedef long INT32;
#endif
#endif
#endif
#endif
/* Datatype used for image dimensions. The JPEG standard only supports
* images up to 64K*64K due to 16-bit fields in SOF markers. Therefore
* "unsigned int" is sufficient on all machines. However, if you need to
* handle larger images and you don't mind deviating from the spec, you
* can change this datatype.
*/
typedef unsigned int JDIMENSION;
#define JPEG_MAX_DIMENSION 65500L /* a tad under 64K to prevent overflows */
/* These macros are used in all function definitions and extern declarations.
* You could modify them if you need to change function linkage conventions;
* in particular, you'll need to do that to make the library a Windows DLL.
* Another application is to make all functions global for use with debuggers
* or code profilers that require it.
*/
/* a function called through method pointers: */
#define METHODDEF(type) static type
/* a function used only in its module: */
#define LOCAL(type) static type
/* a function referenced thru EXTERNs: */
#define GLOBAL(type) type
/* a reference to a GLOBAL function: */
#define EXTERN(type) extern type
/* This macro is used to declare a "method", that is, a function pointer.
* We want to supply prototype parameters if the compiler can cope.
* Note that the arglist parameter must be parenthesized!
* Again, you can customize this if you need special linkage keywords.
*/
#ifdef HAVE_PROTOTYPES
#define JMETHOD(type,methodname,arglist) type (*methodname) arglist
#else
#define JMETHOD(type,methodname,arglist) type (*methodname) ()
#endif
/* The noreturn type identifier is used to declare functions
* which cannot return.
* Compilers can thus create more optimized code and perform
* better checks for warnings and errors.
* Static analyzer tools can make improved inferences about
* execution paths and are prevented from giving false alerts.
*
* Unfortunately, the proposed specifications of corresponding
* extensions in the Dec 2011 ISO C standard revision (C11),
* GCC, MSVC, etc. are not viable.
* Thus we introduce a user defined type to declare noreturn
* functions at least for clarity. A proper compiler would
* have a suitable noreturn type to match in place of void.
*/
#ifndef HAVE_NORETURN_T
typedef void noreturn_t;
#endif
/* Here is the pseudo-keyword for declaring pointers that must be "far"
* on 80x86 machines. Most of the specialized coding for 80x86 is handled
* by just saying "FAR *" where such a pointer is needed. In a few places
* explicit coding is needed; see uses of the NEED_FAR_POINTERS symbol.
*/
#ifndef FAR
#ifdef NEED_FAR_POINTERS
#define FAR far
#else
#define FAR
#endif
#endif
/*
* On a few systems, type boolean and/or its values FALSE, TRUE may appear
* in standard header files. Or you may have conflicts with application-
* specific header files that you want to include together with these files.
* Defining HAVE_BOOLEAN before including jpeglib.h should make it work.
*/
#ifndef HAVE_BOOLEAN
#if defined FALSE || defined TRUE || defined QGLOBAL_H
/* Qt3 defines FALSE and TRUE as "const" variables in qglobal.h */
typedef int boolean;
#ifndef FALSE /* in case these macros already exist */
#define FALSE 0 /* values of boolean */
#endif
#ifndef TRUE
#define TRUE 1
#endif
#else
typedef enum {
FALSE = 0, TRUE = 1 } boolean;
#endif
#endif
/*
* The remaining options affect code selection within the JPEG library,
* but they don't need to be visible to most applications using the library.
* To minimize application namespace pollution, the symbols won't be
* defined unless JPEG_INTERNALS or JPEG_INTERNAL_OPTIONS has been defined.
*/
#ifdef JPEG_INTERNALS
#define JPEG_INTERNAL_OPTIONS
#endif
#ifdef JPEG_INTERNAL_OPTIONS
/*
* These defines indicate whether to include various optional functions.
* Undefining some of these symbols will produce a smaller but less capable
* library. Note that you can leave certain source files out of the
* compilation/linking process if you've #undef'd the corresponding symbols.
* (You may HAVE to do that if your compiler doesn't like null source files.)
*/
/* Capability options common to encoder and decoder: */
#define DCT_ISLOW_SUPPORTED /* slow but accurate integer algorithm */
#define DCT_IFAST_SUPPORTED /* faster, less accurate integer method */
#define DCT_FLOAT_SUPPORTED /* floating-point: accurate, fast on fast HW */
/* Encoder capability options: */
#define C_ARITH_CODING_SUPPORTED /* Arithmetic coding back end? */
#define C_MULTISCAN_FILES_SUPPORTED /* Multiple-scan JPEG files? */
#define C_PROGRESSIVE_SUPPORTED /* Progressive JPEG? (Requires MULTISCAN)*/
#define DCT_SCALING_SUPPORTED /* Input rescaling via DCT? (Requires DCT_ISLOW)*/
#define ENTROPY_OPT_SUPPORTED /* Optimization of entropy coding parms? */
/* Note: if you selected more than 8-bit data precision, it is dangerous to
* turn off ENTROPY_OPT_SUPPORTED. The standard Huffman tables are only
* good for 8-bit precision, so arithmetic coding is recommended for higher
* precision. The Huffman encoder normally uses entropy optimization to
* compute usable tables for higher precision. Otherwise, you'll have to
* supply different default Huffman tables.
* The exact same statements apply for progressive JPEG: the default tables
* don't work for progressive mode. (This may get fixed, however.)
*/
#define INPUT_SMOOTHING_SUPPORTED /* Input image smoothing option? */
/* Decoder capability options: */
#define D_ARITH_CODING_SUPPORTED /* Arithmetic coding back end? */
#define D_MULTISCAN_FILES_SUPPORTED /* Multiple-scan JPEG files? */
#define D_PROGRESSIVE_SUPPORTED /* Progressive JPEG? (Requires MULTISCAN)*/
#define IDCT_SCALING_SUPPORTED /* Output rescaling via IDCT? (Requires DCT_ISLOW)*/
#define SAVE_MARKERS_SUPPORTED /* jpeg_save_markers() needed? */
#define BLOCK_SMOOTHING_SUPPORTED /* Block smoothing? (Progressive only) */
#undef UPSAMPLE_SCALING_SUPPORTED /* Output rescaling at upsample stage? */
#define UPSAMPLE_MERGING_SUPPORTED /* Fast path for sloppy upsampling? */
#define QUANT_1PASS_SUPPORTED /* 1-pass color quantization? */
#define QUANT_2PASS_SUPPORTED /* 2-pass color quantization? */
/* more capability options later, no doubt */
/*
* Ordering of RGB data in scanlines passed to or from the application.
* If your application wants to deal with data in the order B,G,R, just
* change these macros. You can also deal with formats such as R,G,B,X
* (one extra byte per pixel) by changing RGB_PIXELSIZE. Note that changing
* the offsets will also change the order in which colormap data is organized.
* RESTRICTIONS:
* 1. The sample applications cjpeg,djpeg do NOT support modified RGB formats.
* 2. The color quantizer modules will not behave desirably if RGB_PIXELSIZE
* is not 3 (they don't understand about dummy color components!). So you
* can't use color quantization if you change that value.
*/
#define RGB_RED 0 /* Offset of Red in an RGB scanline element */
#define RGB_GREEN 1 /* Offset of Green */
#define RGB_BLUE 2 /* Offset of Blue */
#define RGB_PIXELSIZE 3 /* JSAMPLEs per RGB scanline element */
/* Definitions for speed-related optimizations. */
/* If your compiler supports inline functions, define INLINE
* as the inline keyword; otherwise define it as empty.
*/
#ifndef INLINE
#ifdef __GNUC__ /* for instance, GNU C knows about inline */
#define INLINE __inline__
#endif
#ifndef INLINE
#define INLINE /* default is to define it as empty */
#endif
#endif
/* On some machines (notably 68000 series) "int" is 32 bits, but multiplying
* two 16-bit shorts is faster than multiplying two ints. Define MULTIPLIER
* as short on such a machine. MULTIPLIER must be at least 16 bits wide.
*/
#ifndef MULTIPLIER
#define MULTIPLIER int /* type for fastest integer multiply */
#endif
/* FAST_FLOAT should be either float or double, whichever is done faster
* by your compiler. (Note that this type is only used in the floating point
* DCT routines, so it only matters if you've defined DCT_FLOAT_SUPPORTED.)
* Typically, float is faster in ANSI C compilers, while double is faster in
* pre-ANSI compilers (because they insist on converting to double anyway).
* The code below therefore chooses float if we have ANSI-style prototypes.
*/
#ifndef FAST_FLOAT
#ifdef HAVE_PROTOTYPES
#define FAST_FLOAT float
#else
#define FAST_FLOAT double
#endif
#endif
#endif /* JPEG_INTERNAL_OPTIONS */
3.【jerror.h】
/*
* jerror.h
*
* Copyright (C) 1994-1997, Thomas G. Lane.
* Modified 1997-2012 by Guido Vollbeding.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
* This file defines the error and message codes for the JPEG library.
* Edit this file to add new codes, or to translate the message strings to
* some other language.
* A set of error-reporting macros are defined too. Some applications using
* the JPEG library may wish to include this file to get the error codes
* and/or the macros.
*/
/*
* To define the enum list of message codes, include this file without
* defining macro JMESSAGE. To create a message string table, include it
* again with a suitable JMESSAGE definition (see jerror.c for an example).
*/
#ifndef JMESSAGE
#ifndef JERROR_H
/* First time through, define the enum list */
#define JMAKE_ENUM_LIST
#else
/* Repeated inclusions of this file are no-ops unless JMESSAGE is defined */
#define JMESSAGE(code,string)
#endif /* JERROR_H */
#endif /* JMESSAGE */
#ifdef JMAKE_ENUM_LIST
typedef enum {
#define JMESSAGE(code,string) code ,
#endif /* JMAKE_ENUM_LIST */
JMESSAGE(JMSG_NOMESSAGE, "Bogus message code %d") /* Must be first entry! */
/* For maintenance convenience, list is alphabetical by message code name */
JMESSAGE(JERR_BAD_ALIGN_TYPE, "ALIGN_TYPE is wrong, please fix")
JMESSAGE(JERR_BAD_ALLOC_CHUNK, "MAX_ALLOC_CHUNK is wrong, please fix")
JMESSAGE(JERR_BAD_BUFFER_MODE, "Bogus buffer control mode")
JMESSAGE(JERR_BAD_COMPONENT_ID, "Invalid component ID %d in SOS")
JMESSAGE(JERR_BAD_CROP_SPEC, "Invalid crop request")
JMESSAGE(JERR_BAD_DCT_COEF, "DCT coefficient out of range")
JMESSAGE(JERR_BAD_DCTSIZE, "DCT scaled block size %dx%d not supported")
JMESSAGE(JERR_BAD_DROP_SAMPLING,
"Component index %d: mismatching sampling ratio %d:%d, %d:%d, %c")
JMESSAGE(JERR_BAD_HUFF_TABLE, "Bogus Huffman table definition")
JMESSAGE(JERR_BAD_IN_COLORSPACE, "Bogus input colorspace")
JMESSAGE(JERR_BAD_J_COLORSPACE, "Bogus JPEG colorspace")
JMESSAGE(JERR_BAD_LENGTH, "Bogus marker length")
JMESSAGE(JERR_BAD_LIB_VERSION,
"Wrong JPEG library version: library is %d, caller expects %d")
JMESSAGE(JERR_BAD_MCU_SIZE, "Sampling factors too large for interleaved scan")
JMESSAGE(JERR_BAD_POOL_ID, "Invalid memory pool code %d")
JMESSAGE(JERR_BAD_PRECISION, "Unsupported JPEG data precision %d")
JMESSAGE(JERR_BAD_PROGRESSION,
"Invalid progressive parameters Ss=%d Se=%d Ah=%d Al=%d")
JMESSAGE(JERR_BAD_PROG_SCRIPT,
"Invalid progressive parameters at scan script entry %d")
JMESSAGE(JERR_BAD_SAMPLING, "Bogus sampling factors")
JMESSAGE(JERR_BAD_SCAN_SCRIPT, "Invalid scan script at entry %d")
JMESSAGE(JERR_BAD_STATE, "Improper call to JPEG library in state %d")
JMESSAGE(JERR_BAD_STRUCT_SIZE,
"JPEG parameter struct mismatch: library thinks size is %u, caller expects %u")
JMESSAGE(JERR_BAD_VIRTUAL_ACCESS, "Bogus virtual array access")
JMESSAGE(JERR_BUFFER_SIZE, "Buffer passed to JPEG library is too small")
JMESSAGE(JERR_CANT_SUSPEND, "Suspension not allowed here")
JMESSAGE(JERR_CCIR601_NOTIMPL, "CCIR601 sampling not implemented yet")
JMESSAGE(JERR_COMPONENT_COUNT, "Too many color components: %d, max %d")
JMESSAGE(JERR_CONVERSION_NOTIMPL, "Unsupported color conversion request")
JMESSAGE(JERR_DAC_INDEX, "Bogus DAC index %d")
JMESSAGE(JERR_DAC_VALUE, "Bogus DAC value 0x%x")
JMESSAGE(JERR_DHT_INDEX, "Bogus DHT index %d")
JMESSAGE(JERR_DQT_INDEX, "Bogus DQT index %d")
JMESSAGE(JERR_EMPTY_IMAGE, "Empty JPEG image (DNL not supported)")
JMESSAGE(JERR_EMS_READ, "Read from EMS failed")
JMESSAGE(JERR_EMS_WRITE, "Write to EMS failed")
JMESSAGE(JERR_EOI_EXPECTED, "Didn't expect more than one scan")
JMESSAGE(JERR_FILE_READ, "Input file read error")
JMESSAGE(JERR_FILE_WRITE, "Output file write error --- out of disk space?")
JMESSAGE(JERR_FRACT_SAMPLE_NOTIMPL, "Fractional sampling not implemented yet")
JMESSAGE(JERR_HUFF_CLEN_OVERFLOW, "Huffman code size table overflow")
JMESSAGE(JERR_HUFF_MISSING_CODE, "Missing Huffman code table entry")
JMESSAGE(JERR_IMAGE_TOO_BIG, "Maximum supported image dimension is %u pixels")
JMESSAGE(JERR_INPUT_EMPTY, "Empty input file")
JMESSAGE(JERR_INPUT_EOF, "Premature end of input file")
JMESSAGE(JERR_MISMATCHED_QUANT_TABLE,
"Cannot transcode due to multiple use of quantization table %d")
JMESSAGE(JERR_MISSING_DATA, "Scan script does not transmit all data")
JMESSAGE(JERR_MODE_CHANGE, "Invalid color quantization mode change")
JMESSAGE(JERR_NOTIMPL, "Not implemented yet")
JMESSAGE(JERR_NOT_COMPILED, "Requested feature was omitted at compile time")
JMESSAGE(JERR_NO_ARITH_TABLE, "Arithmetic table 0x%02x was not defined")
JMESSAGE(JERR_NO_BACKING_STORE, "Backing store not supported")
JMESSAGE(JERR_NO_HUFF_TABLE, "Huffman table 0x%02x was not defined")
JMESSAGE(JERR_NO_IMAGE, "JPEG datastream contains no image")
JMESSAGE(JERR_NO_QUANT_TABLE, "Quantization table 0x%02x was not defined")
JMESSAGE(JERR_NO_SOI, "Not a JPEG file: starts with 0x%02x 0x%02x")
JMESSAGE(JERR_OUT_OF_MEMORY, "Insufficient memory (case %d)")
JMESSAGE(JERR_QUANT_COMPONENTS,
"Cannot quantize more than %d color components")
JMESSAGE(JERR_QUANT_FEW_COLORS, "Cannot quantize to fewer than %d colors")
JMESSAGE(JERR_QUANT_MANY_COLORS, "Cannot quantize to more than %d colors")
JMESSAGE(JERR_SOF_BEFORE, "Invalid JPEG file structure: %s before SOF")
JMESSAGE(JERR_SOF_DUPLICATE, "Invalid JPEG file structure: two SOF markers")
JMESSAGE(JERR_SOF_NO_SOS, "Invalid JPEG file structure: missing SOS marker")
JMESSAGE(JERR_SOF_UNSUPPORTED, "Unsupported JPEG process: SOF type 0x%02x")
JMESSAGE(JERR_SOI_DUPLICATE, "Invalid JPEG file structure: two SOI markers")
JMESSAGE(JERR_TFILE_CREATE, "Failed to create temporary file %s")
JMESSAGE(JERR_TFILE_READ, "Read failed on temporary file")
JMESSAGE(JERR_TFILE_SEEK, "Seek failed on temporary file")
JMESSAGE(JERR_TFILE_WRITE,
"Write failed on temporary file --- out of disk space?")
JMESSAGE(JERR_TOO_LITTLE_DATA, "Application transferred too few scanlines")
JMESSAGE(JERR_UNKNOWN_MARKER, "Unsupported marker type 0x%02x")
JMESSAGE(JERR_VIRTUAL_BUG, "Virtual array controller messed up")
JMESSAGE(JERR_WIDTH_OVERFLOW, "Image too wide for this implementation")
JMESSAGE(JERR_XMS_READ, "Read from XMS failed")
JMESSAGE(JERR_XMS_WRITE, "Write to XMS failed")
JMESSAGE(JMSG_COPYRIGHT, JCOPYRIGHT)
JMESSAGE(JMSG_VERSION, JVERSION)
JMESSAGE(JTRC_16BIT_TABLES,
"Caution: quantization tables are too coarse for baseline JPEG")
JMESSAGE(JTRC_ADOBE,
"Adobe APP14 marker: version %d, flags 0x%04x 0x%04x, transform %d")
JMESSAGE(JTRC_APP0, "Unknown APP0 marker (not JFIF), length %u")
JMESSAGE(JTRC_APP14, "Unknown APP14 marker (not Adobe), length %u")
JMESSAGE(JTRC_DAC, "Define Arithmetic Table 0x%02x: 0x%02x")
JMESSAGE(JTRC_DHT, "Define Huffman Table 0x%02x")
JMESSAGE(JTRC_DQT, "Define Quantization Table %d precision %d")
JMESSAGE(JTRC_DRI, "Define Restart Interval %u")
JMESSAGE(JTRC_EMS_CLOSE, "Freed EMS handle %u")
JMESSAGE(JTRC_EMS_OPEN, "Obtained EMS handle %u")
JMESSAGE(JTRC_EOI, "End Of Image")
JMESSAGE(JTRC_HUFFBITS, " %3d %3d %3d %3d %3d %3d %3d %3d")
JMESSAGE(JTRC_JFIF, "JFIF APP0 marker: version %d.%02d, density %dx%d %d")
JMESSAGE(JTRC_JFIF_BADTHUMBNAILSIZE,
"Warning: thumbnail image size does not match data length %u")
JMESSAGE(JTRC_JFIF_EXTENSION,
"JFIF extension marker: type 0x%02x, length %u")
JMESSAGE(JTRC_JFIF_THUMBNAIL, " with %d x %d thumbnail image")
JMESSAGE(JTRC_MISC_MARKER, "Miscellaneous marker 0x%02x, length %u")
JMESSAGE(JTRC_PARMLESS_MARKER, "Unexpected marker 0x%02x")
JMESSAGE(JTRC_QUANTVALS, " %4u %4u %4u %4u %4u %4u %4u %4u")
JMESSAGE(JTRC_QUANT_3_NCOLORS, "Quantizing to %d = %d*%d*%d colors")
JMESSAGE(JTRC_QUANT_NCOLORS, "Quantizing to %d colors")
JMESSAGE(JTRC_QUANT_SELECTED, "Selected %d colors for quantization")
JMESSAGE(JTRC_RECOVERY_ACTION, "At marker 0x%02x, recovery action %d")
JMESSAGE(JTRC_RST, "RST%d")
JMESSAGE(JTRC_SMOOTH_NOTIMPL,
"Smoothing not supported with nonstandard sampling ratios")
JMESSAGE(JTRC_SOF, "Start Of Frame 0x%02x: width=%u, height=%u, components=%d")
JMESSAGE(JTRC_SOF_COMPONENT, " Component %d: %dhx%dv q=%d")
JMESSAGE(JTRC_SOI, "Start of Image")
JMESSAGE(JTRC_SOS, "Start Of Scan: %d components")
JMESSAGE(JTRC_SOS_COMPONENT, " Component %d: dc=%d ac=%d")
JMESSAGE(JTRC_SOS_PARAMS, " Ss=%d, Se=%d, Ah=%d, Al=%d")
JMESSAGE(JTRC_TFILE_CLOSE, "Closed temporary file %s")
JMESSAGE(JTRC_TFILE_OPEN, "Opened temporary file %s")
JMESSAGE(JTRC_THUMB_JPEG,
"JFIF extension marker: JPEG-compressed thumbnail image, length %u")
JMESSAGE(JTRC_THUMB_PALETTE,
"JFIF extension marker: palette thumbnail image, length %u")
JMESSAGE(JTRC_THUMB_RGB,
"JFIF extension marker: RGB thumbnail image, length %u")
JMESSAGE(JTRC_UNKNOWN_IDS,
"Unrecognized component IDs %d %d %d, assuming YCbCr")
JMESSAGE(JTRC_XMS_CLOSE, "Freed XMS handle %u")
JMESSAGE(JTRC_XMS_OPEN, "Obtained XMS handle %u")
JMESSAGE(JWRN_ADOBE_XFORM, "Unknown Adobe color transform code %d")
JMESSAGE(JWRN_ARITH_BAD_CODE, "Corrupt JPEG data: bad arithmetic code")
JMESSAGE(JWRN_BOGUS_PROGRESSION,
"Inconsistent progression sequence for component %d coefficient %d")
JMESSAGE(JWRN_EXTRANEOUS_DATA,
"Corrupt JPEG data: %u extraneous bytes before marker 0x%02x")
JMESSAGE(JWRN_HIT_MARKER, "Corrupt JPEG data: premature end of data segment")
JMESSAGE(JWRN_HUFF_BAD_CODE, "Corrupt JPEG data: bad Huffman code")
JMESSAGE(JWRN_JFIF_MAJOR, "Warning: unknown JFIF revision number %d.%02d")
JMESSAGE(JWRN_JPEG_EOF, "Premature end of JPEG file")
JMESSAGE(JWRN_MUST_RESYNC,
"Corrupt JPEG data: found marker 0x%02x instead of RST%d")
JMESSAGE(JWRN_NOT_SEQUENTIAL, "Invalid SOS parameters for sequential JPEG")
JMESSAGE(JWRN_TOO_MUCH_DATA, "Application transferred too many scanlines")
#ifdef JMAKE_ENUM_LIST
JMSG_LASTMSGCODE
} J_MESSAGE_CODE;
#undef JMAKE_ENUM_LIST
#endif /* JMAKE_ENUM_LIST */
/* Zap JMESSAGE macro so that future re-inclusions do nothing by default */
#undef JMESSAGE
#ifndef JERROR_H
#define JERROR_H
/* Macros to simplify using the error and trace message stuff */
/* The first parameter is either type of cinfo pointer */
/* Fatal errors (print message and exit) */
#define ERREXIT(cinfo,code) \
((cinfo)->err->msg_code = (code), \
(*(cinfo)->err->error_exit) ((j_common_ptr) (cinfo)))
#define ERREXIT1(cinfo,code,p1) \
((cinfo)->err->msg_code = (code), \
(cinfo)->err->msg_parm.i[0] = (p1), \
(*(cinfo)->err->error_exit) ((j_common_ptr) (cinfo)))
#define ERREXIT2(cinfo,code,p1,p2) \
((cinfo)->err->msg_code = (code), \
(cinfo)->err->msg_parm.i[0] = (p1), \
(cinfo)->err->msg_parm.i[1] = (p2), \
(*(cinfo)->err->error_exit) ((j_common_ptr) (cinfo)))
#define ERREXIT3(cinfo,code,p1,p2,p3) \
((cinfo)->err->msg_code = (code), \
(cinfo)->err->msg_parm.i[0] = (p1), \
(cinfo)->err->msg_parm.i[1] = (p2), \
(cinfo)->err->msg_parm.i[2] = (p3), \
(*(cinfo)->err->error_exit) ((j_common_ptr) (cinfo)))
#define ERREXIT4(cinfo,code,p1,p2,p3,p4) \
((cinfo)->err->msg_code = (code), \
(cinfo)->err->msg_parm.i[0] = (p1), \
(cinfo)->err->msg_parm.i[1] = (p2), \
(cinfo)->err->msg_parm.i[2] = (p3), \
(cinfo)->err->msg_parm.i[3] = (p4), \
(*(cinfo)->err->error_exit) ((j_common_ptr) (cinfo)))
#define ERREXIT6(cinfo,code,p1,p2,p3,p4,p5,p6) \
((cinfo)->err->msg_code = (code), \
(cinfo)->err->msg_parm.i[0] = (p1), \
(cinfo)->err->msg_parm.i[1] = (p2), \
(cinfo)->err->msg_parm.i[2] = (p3), \
(cinfo)->err->msg_parm.i[3] = (p4), \
(cinfo)->err->msg_parm.i[4] = (p5), \
(cinfo)->err->msg_parm.i[5] = (p6), \
(*(cinfo)->err->error_exit) ((j_common_ptr) (cinfo)))
#define ERREXITS(cinfo,code,str) \
((cinfo)->err->msg_code = (code), \
strncpy((cinfo)->err->msg_parm.s, (str), JMSG_STR_PARM_MAX), \
(*(cinfo)->err->error_exit) ((j_common_ptr) (cinfo)))
#define MAKESTMT(stuff) do {
stuff } while (0)
/* Nonfatal errors (we can keep going, but the data is probably corrupt) */
#define WARNMS(cinfo,code) \
((cinfo)->err->msg_code = (code), \
(*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), -1))
#define WARNMS1(cinfo,code,p1) \
((cinfo)->err->msg_code = (code), \
(cinfo)->err->msg_parm.i[0] = (p1), \
(*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), -1))
#define WARNMS2(cinfo,code,p1,p2) \
((cinfo)->err->msg_code = (code), \
(cinfo)->err->msg_parm.i[0] = (p1), \
(cinfo)->err->msg_parm.i[1] = (p2), \
(*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), -1))
/* Informational/debugging messages */
#define TRACEMS(cinfo,lvl,code) \
((cinfo)->err->msg_code = (code), \
(*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), (lvl)))
#define TRACEMS1(cinfo,lvl,code,p1) \
((cinfo)->err->msg_code = (code), \
(cinfo)->err->msg_parm.i[0] = (p1), \
(*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), (lvl)))
#define TRACEMS2(cinfo,lvl,code,p1,p2) \
((cinfo)->err->msg_code = (code), \
(cinfo)->err->msg_parm.i[0] = (p1), \
(cinfo)->err->msg_parm.i[1] = (p2), \
(*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), (lvl)))
#define TRACEMS3(cinfo,lvl,code,p1,p2,p3) \
MAKESTMT(int * _mp = (cinfo)->err->msg_parm.i; \
_mp[0] = (p1); _mp[1] = (p2); _mp[2] = (p3); \
(cinfo)->err->msg_code = (code); \
(*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), (lvl)); )
#define TRACEMS4(cinfo,lvl,code,p1,p2,p3,p4) \
MAKESTMT(int * _mp = (cinfo)->err->msg_parm.i; \
_mp[0] = (p1); _mp[1] = (p2); _mp[2] = (p3); _mp[3] = (p4); \
(cinfo)->err->msg_code = (code); \
(*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), (lvl)); )
#define TRACEMS5(cinfo,lvl,code,p1,p2,p3,p4,p5) \
MAKESTMT(int * _mp = (cinfo)->err->msg_parm.i; \
_mp[0] = (p1); _mp[1] = (p2); _mp[2] = (p3); _mp[3] = (p4); \
_mp[4] = (p5); \
(cinfo)->err->msg_code = (code); \
(*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), (lvl)); )
#define TRACEMS8(cinfo,lvl,code,p1,p2,p3,p4,p5,p6,p7,p8) \
MAKESTMT(int * _mp = (cinfo)->err->msg_parm.i; \
_mp[0] = (p1); _mp[1] = (p2); _mp[2] = (p3); _mp[3] = (p4); \
_mp[4] = (p5); _mp[5] = (p6); _mp[6] = (p7); _mp[7] = (p8); \
(cinfo)->err->msg_code = (code); \
(*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), (lvl)); )
#define TRACEMSS(cinfo,lvl,code,str) \
((cinfo)->err->msg_code = (code), \
strncpy((cinfo)->err->msg_parm.s, (str), JMSG_STR_PARM_MAX), \
(*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), (lvl)))
#endif /* JERROR_H */
4.【jconfig.h】
/* jconfig.h. Generated from jconfig.cfg by configure. */
/* jconfig.cfg --- source file edited by configure script */
/* see jconfig.txt for explanations */
#define HAVE_PROTOTYPES 1
#define HAVE_UNSIGNED_CHAR 1
#define HAVE_UNSIGNED_SHORT 1
/* #undef void */
/* #undef const */
/* #undef CHAR_IS_UNSIGNED */
#define HAVE_STDDEF_H 1
#define HAVE_STDLIB_H 1
#define HAVE_LOCALE_H 1
/* #undef NEED_BSD_STRINGS */
/* #undef NEED_SYS_TYPES_H */
/* #undef NEED_FAR_POINTERS */
/* #undef NEED_SHORT_EXTERNAL_NAMES */
/* Define this if you get warnings about undefined structures. */
/* #undef INCOMPLETE_TYPES_BROKEN */
/* Define "boolean" as unsigned char, not enum, on Windows systems. */
#ifdef _WIN32
#ifndef __RPCNDR_H__ /* don't conflict if rpcndr.h already read */
typedef unsigned char boolean;
#endif
#ifndef FALSE /* in case these macros already exist */
#define FALSE 0 /* values of boolean */
#endif
#ifndef TRUE
#define TRUE 1
#endif
#define HAVE_BOOLEAN /* prevent jmorecfg.h from redefining it */
#endif
#ifdef JPEG_INTERNALS
/* #undef RIGHT_SHIFT_IS_UNSIGNED */
#define INLINE __inline__
/* These are for configuring the JPEG memory manager. */
/* #undef DEFAULT_MAX_MEM */
/* #undef NO_MKTEMP */
#endif /* JPEG_INTERNALS */
#ifdef JPEG_CJPEG_DJPEG
#define BMP_SUPPORTED /* BMP image file format */
#define GIF_SUPPORTED /* GIF image file format */
#define PPM_SUPPORTED /* PBMPLUS PPM/PGM image file format */
/* #undef RLE_SUPPORTED */
#define TARGA_SUPPORTED /* Targa image file format */
/* #undef TWO_FILE_COMMANDLINE */
/* #undef NEED_SIGNAL_CATCHER */
/* #undef DONT_USE_B_MODE */
/* Define this if you want percent-done progress reports from cjpeg/djpeg. */
/* #undef PROGRESS_REPORT */
#endif /* JPEG_CJPEG_DJPEG */
5.【showjpg.c】
#include <stdio.h>
#include <stdbool.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/mman.h>
#include <string.h>
#include <unistd.h>
#include <stdlib.h>
#include "jpeglib.h" //jpg库的头文件
int main()
{
int i,j,k;
int lcdfd;
int *lcdmem;
//打开lcd
lcdfd=open("/dev/fb0",O_RDWR);
if(lcdfd==-1)
{
perror("打开lcd失败!\n");
return -1;
}
//映射得到lcd的首地址
lcdmem=mmap(NULL,800*480*4,PROT_READ|PROT_WRITE,MAP_SHARED,lcdfd,0);
if(lcdmem==NULL)
{
perror("映射lcd失败了!\n");
return -1;
}
//定义解压缩结构体变量和处理错误的结构体变量，并初始化
struct jpeg_decompress_struct mydem;
jpeg_create_decompress(&mydem);
struct jpeg_error_mgr myerr;
mydem.err=jpeg_std_error(&myerr);
//指定解压缩数据源
FILE *myfile=fopen("/1.jpg","r+");
if(myfile==NULL)
{
perror("打开jpg失败!\n");
return -1;
}
jpeg_stdio_src(&mydem,myfile);
//读取文件头
jpeg_read_header(&mydem,true);
//开始解压缩得到jpg原始的RGB数据
jpeg_start_decompress(&mydem);
printf("宽: %d\n",mydem.image_width);
printf("高: %d\n",mydem.image_height);
printf("色深: %d\n",mydem.num_components);
//定义指针存放一行RGB数据
char *buf=malloc(3*mydem.image_width);
//定义数组存放转换得到的ARGB数据
int otherbuf[mydem.image_width];
//循环读取解压缩得到的数据，填充到lcd
for(i=0; i<mydem.image_height; i++)
{
jpeg_read_scanlines(&mydem,(JSAMPARRAY)&buf,1);
//读取RGB--》ARGB buf[0]--[2] 一组RGB
for(j=0,k=0; k<mydem.image_width; j+=3,k++)
otherbuf[k]=0x00<<24|buf[j]<<16|buf[j+1]<<8|buf[j+2];
//*(lcdmem+偏移量)=0x00<<24|buf[j]<<16|buf[j+1]<<8|buf[j+2]; 更加简洁的写法
//把otherbuf填充到lcd上
memcpy(lcdmem+800*i,&otherbuf[0],4*mydem.image_width);
}
//收尾
jpeg_finish_decompress(&mydem);
jpeg_destroy_decompress(&mydem);
fclose(myfile);
close(lcdfd);
munmap(lcdmem,800*480*4);
free(buf);
return 0;
}
需要的动态库 libjpeg.so 和 libjpeg.so.9.1
【7】QT中的摄像头源码
必须添加这两个
项目 .pro
QT += core gui multimedia multimediawidgets
greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
CONFIG += c++11
# The following define makes your compiler emit warnings if you use
# any Qt feature that has been marked deprecated (the exact warnings
# depend on your compiler). Please consult the documentation of the
# deprecated API in order to know how to port your code away from it.
DEFINES += QT_DEPRECATED_WARNINGS
# You can also make your code fail to compile if it uses deprecated APIs.
# In order to do so, uncomment the following line.
# You can also select to disable deprecated APIs only up to a certain version of Qt.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000 # disables all the APIs deprecated before Qt 6.0.0
SOURCES += \
main.cpp \
mainwindow.cpp
HEADERS += \
mainwindow.h
FORMS += \
mainwindow.ui
# Default rules for deployment.
qnx: target.path = /tmp/$${
TARGET}/bin
else: unix:!android: target.path = /opt/$${
TARGET}/bin
!isEmpty(target.path): INSTALLS += target
1.【mainwindow.h】
#ifndef MAINWINDOW_H
#define MAINWINDOW_H
#include <QMainWindow>
#include <QCamera>
QT_BEGIN_NAMESPACE
namespace Ui {
class MainWindow; }
QT_END_NAMESPACE
class MainWindow : public QMainWindow
{
Q_OBJECT
public:
MainWindow(QWidget *parent = nullptr);
~MainWindow();
private slots:
void on_pushButton_clicked();
void on_comboBox_activated(const QString &arg1);
void on_closebt_clicked();
private:
Ui::MainWindow *ui;
QCamera *cam;
};
#endif // MAINWINDOW_H
2.【mainwindow.cpp】
#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <QCameraInfo>
#include <QList>
#include <QDebug>
#include <QVideoWidget>
MainWindow::MainWindow(QWidget *parent)
: QMainWindow(parent)
, ui(new Ui::MainWindow)
{
ui->setupUi(this);
}
MainWindow::~MainWindow()
{
delete ui;
}
//获取当前系统摄像头信息
void MainWindow::on_pushButton_clicked()
{
QList<QCameraInfo> mylist=QCameraInfo::availableCameras();
//把摄像头的信息在下拉框中显示出来
for(auto &x:mylist)
{
//qDebug()<<"摄像头的描述信息是: "<<x.description();
//qDebug()<<"摄像头的设备名称是: "<<x.deviceName();
//在下拉框中显示设备名字
ui->comboBox->addItem(x.deviceName());
}
}
//点击下拉框中的某个摄像头名称，启动摄像头
void MainWindow::on_comboBox_activated(const QString &arg1)
{
//创建摄像头对象
cam=new QCamera(arg1.toUtf8());
//准备好摄像头显示需要用到的窗口
QVideoWidget *win=new QVideoWidget(ui->widget);
//把摄像头跟窗口绑定在一起
cam->setViewfinder(win);
//调整窗口大小
win->resize(ui->widget->width(),ui->widget->height());
//显示窗口
win->show();
//启动摄像头
cam->start();
}
//关闭摄像头
void MainWindow::on_closebt_clicked()
{
cam->stop();
}
3.【main.cpp】
#include "mainwindow.h"
#include <QApplication>
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
MainWindow w;
w.show();
return a.exec();
}
【8】用多线程实现V4L2摄像头显示源码
【V4L2.pro】
QT += core gui
greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
CONFIG += c++11
# The following define makes your compiler emit warnings if you use
# any Qt feature that has been marked deprecated (the exact warnings
# depend on your compiler). Please consult the documentation of the
# deprecated API in order to know how to port your code away from it.
DEFINES += QT_DEPRECATED_WARNINGS
# You can also make your code fail to compile if it uses deprecated APIs.
# In order to do so, uncomment the following line.
# You can also select to disable deprecated APIs only up to a certain version of Qt.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000 # disables all the APIs deprecated before Qt 6.0.0
SOURCES += \
main.cpp \
mainwindow.cpp \
mycamera.cpp
HEADERS += \
mainwindow.h \
mycamera.h
FORMS += \
mainwindow.ui
# Default rules for deployment.
qnx: target.path = /tmp/$${
TARGET}/bin
else: unix:!android: target.path = /opt/$${
TARGET}/bin
!isEmpty(target.path): INSTALLS += target
【mainwindow.h】
#ifndef MAINWINDOW_H
#define MAINWINDOW_H
#include <QMainWindow>
#include "mycamera.h"
QT_BEGIN_NAMESPACE
namespace Ui {
class MainWindow; }
QT_END_NAMESPACE
class MainWindow : public QMainWindow
{
Q_OBJECT
public:
MainWindow(QWidget *parent = nullptr);
~MainWindow();
private slots:
void on_startbt_clicked();
void on_closebt_clicked();
private:
Ui::MainWindow *ui;
mycamera cam; //由于mycamera继承了QThread
};
#endif // MAINWINDOW_H
【mycamera.h】
#ifndef MYCAMERA_H
#define MYCAMERA_H
#include <QThread>
#include <stdio.h>
#include <linux/videodev2.h> //V4L2对应的头文件
#include <stropts.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/mman.h>
#include <string.h>
#include <unistd.h>
#include <sys/select.h>
#define W 640
#define H 480
//自定义结构体，用来存放每个缓冲块的首地址和大小
struct bufmsg
{
void *start; //缓冲块的首地址
int somelen; //缓冲块的大小
};
class mycamera : public QThread
{
Q_OBJECT
public:
explicit mycamera();
//重写父类的同名虚函数run
void run() ;
//摄像头的初始化
int camera_init();
//摄像头捕捉显示画面
int camera_capture();
//关闭摄像头
int camera_uninit();
signals:
private:
int lcdfd;
int *lcdmem;
int camerafd;
//分配缓冲块顺便映射得到4个缓冲块的首地址
struct v4l2_buffer otherbuf;
//定义结构体数组存放4个缓冲块的首地址和大小
struct bufmsg array[4];
enum v4l2_buf_type mytype;
};
#endif // MYCAMERA_H
【mycamera.cpp】
#include "mycamera.h"
//封装函数--》把一组YUV--》转换ARGB数据
int yuvtoargb(int y,int u,int v)
{
int r,g,b;
int pix;
r = y + 1.4075*( v - 128);
g = y - 0.3455*( u - 128) - 0.7169*( v - 128);
b = y + 1.779*( u - 128);
//修正计算结果 0---255之间
if(r>255)
r=255;
if(g>255)
g=255;
if(b>255)
b=255;
if(r<0)
r=0;
if(g<0)
g=0;
if(b<0)
b=0;
//把rgb拼接得到ARGB
pix=0x00<<24|r<<16|g<<8|b;
return pix;
}
//封装函数--》把一帧画面数据中所有的YUYV数据转换成ARGB数据
//参数：yuv --》指向一帧yuyv画面首地址
// argbbuf --》存放转换得到的完整的ARGB数据
//allyuvtoargb(array[i].start,argbbuf)
/*
yuv[0]--第一个Y
yuv[1]-- U
yuv[2]--第二个Y
yuv[3]-- V
*/
int allyuvtoargb(char *yuv,int *argbbuf)
{
int i,j;
for(i=0,j=0; i<W*H; i+=2,j+=4)
{
//一组YUYV转换得到两组ARGB数据
argbbuf[i]=yuvtoargb(yuv[j],yuv[j+1],yuv[j+3]);
argbbuf[i+1]=yuvtoargb(yuv[j+2],yuv[j+1],yuv[j+3]);
}
return 0;
}
mycamera::mycamera() : QThread()
{
}
void mycamera::run()
{
//循环显示摄像头拍摄的画面
while(1)
{
camera_capture();
}
}
//摄像头初始化
int mycamera::camera_init()
{
int ret;
int i;
//打开lcd
lcdfd=open("/dev/fb0",O_RDWR);
if(lcdfd==-1)
{
perror("打开lcd失败!\n");
return -1;
}
//映射得到lcd的首地址
lcdmem=(int *)mmap(NULL,800*480*4,PROT_READ|PROT_WRITE,MAP_SHARED,lcdfd,0);
if(lcdmem==NULL)
{
perror("映射lcd失败了!\n");
return -1;
}
//打开摄像头的驱动
camerafd=open("/dev/video7",O_RDWR);
if(camerafd==-1)
{
perror("打开摄像头失败!\n");
return -1;
}
//设置摄像头采集格式
struct v4l2_format myfmt;
bzero(&myfmt,sizeof(myfmt));
myfmt.type=V4L2_BUF_TYPE_VIDEO_CAPTURE;
myfmt.fmt.pix.width=W;
myfmt.fmt.pix.height=H;
myfmt.fmt.pix.pixelformat=V4L2_PIX_FMT_YUYV;
ret=ioctl(camerafd,VIDIOC_S_FMT,&myfmt);
if(ret==-1)
{
perror("设置采集格式失败!\n");
return -1;
}
//申请4个缓冲块
struct v4l2_requestbuffers mybuf;
bzero(&mybuf,sizeof(mybuf));
mybuf.count=4; //4个缓冲块
mybuf.type=V4L2_BUF_TYPE_VIDEO_CAPTURE;
mybuf.memory=V4L2_MEMORY_MMAP;
ret=ioctl(camerafd,VIDIOC_REQBUFS,&mybuf);
if(ret==-1)
{
perror("申请缓冲块失败!\n");
return -1;
}
for(i=0; i<4; i++)
{
bzero(&otherbuf,sizeof(otherbuf));
otherbuf.index=i; //索引号
otherbuf.type=V4L2_BUF_TYPE_VIDEO_CAPTURE;
otherbuf.memory=V4L2_MEMORY_MMAP;
ret=ioctl(camerafd,VIDIOC_QUERYBUF,&otherbuf);
if(ret==-1)
{
perror("分配缓冲块失败!\n");
return -1;
}
//顺便映射得到4个缓冲块的首地址
array[i].somelen=otherbuf.length;
array[i].start=mmap(NULL,otherbuf.length,PROT_READ|PROT_WRITE,MAP_SHARED,camerafd,otherbuf.m.offset);
if(array[i].start==NULL)
{
perror("映射缓冲块失败了!\n");
return -1;
}
//顺便发送入队申请(一旦摄像头启动了,立马把画面入队)
ret=ioctl(camerafd,VIDIOC_QBUF,&otherbuf);
if(ret==-1)
{
perror("入队失败!\n");
return -1;
}
}
//启动摄像头捕捉
mytype=V4L2_BUF_TYPE_VIDEO_CAPTURE;
ret=ioctl(camerafd,VIDIOC_STREAMON,&mytype);
if(ret==-1)
{
perror("启动摄像头捕捉失败!\n");
return -1;
}
return 0;
}
//摄像头捕捉画面，显示
int mycamera::camera_capture()
{
int ret;
int i,j;
//定义一个数组存放转换得到的一帧完整的ARGB数据
int argbbuf[W*H];
//定义集合存放要监测的文件描述符
fd_set myset;
FD_ZERO(&myset);
FD_SET(camerafd,&myset);
//让摄像头画面循环出队，入队形成视频流在lcd上显示出来
for(i=0; i<4; i++)
{
//监测摄像头队列中是否有数据可读
ret=select(camerafd+1,&myset,NULL,NULL,NULL);
if(ret>0) //说明摄像头的缓冲区中有画面入队了
{
//出队
bzero(&otherbuf,sizeof(otherbuf));
otherbuf.index=i; //索引号
otherbuf.type=V4L2_BUF_TYPE_VIDEO_CAPTURE;
otherbuf.memory=V4L2_MEMORY_MMAP;
ret=ioctl(camerafd,VIDIOC_DQBUF,&otherbuf);
if(ret==-1)
{
perror("出队失败!\n");
return -1;
}
//出队画面(在结构体数组里面存放着)在lcd上显示出来
//array[i].start --》 当前出队的画面数据(YUV格式)首地址
//array[i].somelen --》当前出队的画面数据大小
//YUV格式无法直接在lcd上显示，原因是lcd只能显示ARGB数据
/*
第一行数据: argbbuf[0]--argbbuf[W-1]
lcdmem
第二行数据: argbbuf[W]--argbbuf[2*W-1]
lcdmem+下一行
*/
allyuvtoargb((char *)(array[i].start),argbbuf);
//把argbbuf中的数据填充到lcd对应的位置
for(j=0; j<H; j++)
memcpy(lcdmem+80+800*j,&argbbuf[W*j],W*4);
//入队
ret=ioctl(camerafd,VIDIOC_QBUF,&otherbuf);
if(ret==-1)
{
perror("入队失败!\n");
return -1;
}
}
}
return 0;
}
//摄像头关闭
int mycamera::camera_uninit()
{
int ret;
int i;
//收尾
ret=ioctl(camerafd,VIDIOC_STREAMOFF,&mytype);
if(ret==-1)
{
perror("关闭摄像头捕捉失败!\n");
return -1;
}
munmap(lcdmem,800*480*4);
for(i=0; i<4; i++)
munmap(array[i].start,array[i].somelen);
::close(lcdfd);
::close(camerafd);
return 0;
}
【main.cpp】
#include "mainwindow.h"
#include <QApplication>
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
MainWindow w;
w.show();
return a.exec();
}
【mainwindow.cpp】
#include "mainwindow.h"
#include "ui_mainwindow.h"
MainWindow::MainWindow(QWidget *parent)
: QMainWindow(parent)
, ui(new Ui::MainWindow)
{
ui->setupUi(this);
//构造函数中初始化摄像头
cam.camera_init();
}
MainWindow::~MainWindow()
{
//在析构函数中关闭摄像头
cam.camera_uninit();
delete ui;
}
//启动摄像头(实际上是启动线程，在run方法中不断地捕捉画面)
void MainWindow::on_startbt_clicked()
{
cam.start(); //会自动帮助你执行run
}
//关闭摄像头(实际上是终止线程)
void MainWindow::on_closebt_clicked()
{
cam.terminate();
}
【Makefile】
#############################################################################
# Makefile for building: demo2
# Generated by qmake (3.0) (Qt 5.7.0)
# Project: demo2.pro
# Template: app
# Command: /usr/local/Qt-Embedded-5.7.0/bin/qmake -o Makefile demo2.pro
#############################################################################
MAKEFILE = Makefile
####### Compiler, tools and options
CC = arm-linux-gcc
CXX = arm-linux-g++
DEFINES = -DQT_DEPRECATED_WARNINGS -DQT_NO_DEBUG -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_CORE_LIB
CFLAGS = -pipe -march=armv7-a -O2 -Wall -W -D_REENTRANT -fPIC $(DEFINES)
CXXFLAGS = -pipe -march=armv7-a -march=armv7-a -O2 -std=gnu++11 -Wall -W -D_REENTRANT -fPIC $(DEFINES)
INCPATH = -I. -I/usr/local/Qt-Embedded-5.7.0/include -I/usr/local/Qt-Embedded-5.7.0/include/QtWidgets -I/usr/local/Qt-Embedded-5.7.0/include/QtGui -I/usr/local/Qt-Embedded-5.7.0/include/QtCore -I. -I. -I/usr/local/Qt-Embedded-5.7.0/mkspecs/linux-arm-gnueabi-g++
QMAKE = /usr/local/Qt-Embedded-5.7.0/bin/qmake
DEL_FILE = rm -f
CHK_DIR_EXISTS= test -d
MKDIR = mkdir -p
COPY = cp -f
COPY_FILE = cp -f
COPY_DIR = cp -f -R
INSTALL_FILE = install -m 644 -p
INSTALL_PROGRAM = install -m 755 -p
INSTALL_DIR = cp -f -R
DEL_FILE = rm -f
SYMLINK = ln -f -s
DEL_DIR = rmdir
MOVE = mv -f
TAR = tar -cf
COMPRESS = gzip -9f
DISTNAME = demo21.0.0
DISTDIR = /mnt/hgfs/share/demo2/.tmp/demo21.0.0
LINK = arm-linux-g++
LFLAGS = -Wl,-O1 -Wl,-rpath,/usr/local/Qt-Embedded-5.7.0/lib
LIBS = $(SUBLIBS) -L/usr/local/Qt-Embedded-5.7.0/lib -lQt5Widgets -lQt5Gui -lQt5Core -lGLESv2 -lpthread
AR = arm-linux-ar cqs
RANLIB =
SED = sed
STRIP = arm-linux-strip
####### Output directory
OBJECTS_DIR = ./
####### Files
SOURCES = main.cpp \
mainwindow.cpp \
mycamera.cpp moc_mainwindow.cpp \
moc_mycamera.cpp
OBJECTS = main.o \
mainwindow.o \
mycamera.o \
moc_mainwindow.o \
moc_mycamera.o
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demo2.pro mainwindow.h \
mycamera.h main.cpp \
mainwindow.cpp \
mycamera.cpp
QMAKE_TARGET = demo2
DESTDIR =
TARGET = demo2
first: all
####### Build rules
$(TARGET): ui_mainwindow.h $(OBJECTS)
$(LINK) $(LFLAGS) -o $(TARGET) $(OBJECTS) $(OBJCOMP) $(LIBS)
Makefile: demo2.pro /usr/local/Qt-Embedded-5.7.0/mkspecs/linux-arm-gnueabi-g++/qmake.conf /usr/local/Qt-Embedded-5.7.0/mkspecs/features/spec_pre.prf \
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/usr/local/Qt-Embedded-5.7.0/mkspecs/modules/qt_lib_widgets.pri \
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/usr/local/Qt-Embedded-5.7.0/mkspecs/features/spec_post.prf \
.qmake.stash \
/usr/local/Qt-Embedded-5.7.0/mkspecs/features/exclusive_builds.prf \
/usr/local/Qt-Embedded-5.7.0/mkspecs/features/default_pre.prf \
/usr/local/Qt-Embedded-5.7.0/mkspecs/features/resolve_config.prf \
/usr/local/Qt-Embedded-5.7.0/mkspecs/features/default_post.prf \
/usr/local/Qt-Embedded-5.7.0/mkspecs/features/warn_on.prf \
/usr/local/Qt-Embedded-5.7.0/mkspecs/features/qt.prf \
/usr/local/Qt-Embedded-5.7.0/mkspecs/features/resources.prf \
/usr/local/Qt-Embedded-5.7.0/mkspecs/features/moc.prf \
/usr/local/Qt-Embedded-5.7.0/mkspecs/features/unix/opengl.prf \
/usr/local/Qt-Embedded-5.7.0/mkspecs/features/uic.prf \
/usr/local/Qt-Embedded-5.7.0/mkspecs/features/unix/thread.prf \
/usr/local/Qt-Embedded-5.7.0/mkspecs/features/file_copies.prf \
/usr/local/Qt-Embedded-5.7.0/mkspecs/features/testcase_targets.prf \
/usr/local/Qt-Embedded-5.7.0/mkspecs/features/exceptions.prf \
/usr/local/Qt-Embedded-5.7.0/mkspecs/features/yacc.prf \
/usr/local/Qt-Embedded-5.7.0/mkspecs/features/lex.prf \
demo2.pro \
/usr/local/Qt-Embedded-5.7.0/lib/libQt5Widgets.prl \
/usr/local/Qt-Embedded-5.7.0/lib/libQt5Gui.prl \
/usr/local/Qt-Embedded-5.7.0/lib/libQt5Core.prl
$(QMAKE) -o Makefile demo2.pro
/usr/local/Qt-Embedded-5.7.0/mkspecs/features/spec_pre.prf:
/usr/local/Qt-Embedded-5.7.0/mkspecs/common/unix.conf:
/usr/local/Qt-Embedded-5.7.0/mkspecs/common/linux.conf:
/usr/local/Qt-Embedded-5.7.0/mkspecs/common/sanitize.conf:
/usr/local/Qt-Embedded-5.7.0/mkspecs/common/gcc-base.conf:
/usr/local/Qt-Embedded-5.7.0/mkspecs/common/gcc-base-unix.conf:
/usr/local/Qt-Embedded-5.7.0/mkspecs/common/g++-base.conf:
/usr/local/Qt-Embedded-5.7.0/mkspecs/common/g++-unix.conf:
/usr/local/Qt-Embedded-5.7.0/mkspecs/qconfig.pri:
/usr/local/Qt-Embedded-5.7.0/mkspecs/modules/qt_lib_bluetooth.pri:
/usr/local/Qt-Embedded-5.7.0/mkspecs/modules/qt_lib_bluetooth_private.pri:
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/usr/local/Qt-Embedded-5.7.0/mkspecs/modules/qt_lib_clucene_private.pri:
/usr/local/Qt-Embedded-5.7.0/mkspecs/modules/qt_lib_concurrent.pri:
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/usr/local/Qt-Embedded-5.7.0/mkspecs/modules/qt_lib_core.pri:
/usr/local/Qt-Embedded-5.7.0/mkspecs/modules/qt_lib_core_private.pri:
/usr/local/Qt-Embedded-5.7.0/mkspecs/modules/qt_lib_datavisualization.pri:
/usr/local/Qt-Embedded-5.7.0/mkspecs/modules/qt_lib_datavisualization_private.pri:
/usr/local/Qt-Embedded-5.7.0/mkspecs/modules/qt_lib_dbus.pri:
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/usr/local/Qt-Embedded-5.7.0/mkspecs/modules/qt_lib_network.pri:
/usr/local/Qt-Embedded-5.7.0/mkspecs/modules/qt_lib_network_private.pri:
/usr/local/Qt-Embedded-5.7.0/mkspecs/modules/qt_lib_nfc.pri:
/usr/local/Qt-Embedded-5.7.0/mkspecs/modules/qt_lib_nfc_private.pri:
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/usr/local/Qt-Embedded-5.7.0/mkspecs/modules/qt_lib_openglextensions_private.pri:
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/usr/local/Qt-Embedded-5.7.0/mkspecs/linux-arm-gnueabi-g++/qmake.conf:
/usr/local/Qt-Embedded-5.7.0/mkspecs/features/spec_post.prf:
.qmake.stash:
/usr/local/Qt-Embedded-5.7.0/mkspecs/features/exclusive_builds.prf:
/usr/local/Qt-Embedded-5.7.0/mkspecs/features/default_pre.prf:
/usr/local/Qt-Embedded-5.7.0/mkspecs/features/resolve_config.prf:
/usr/local/Qt-Embedded-5.7.0/mkspecs/features/default_post.prf:
/usr/local/Qt-Embedded-5.7.0/mkspecs/features/warn_on.prf:
/usr/local/Qt-Embedded-5.7.0/mkspecs/features/qt.prf:
/usr/local/Qt-Embedded-5.7.0/mkspecs/features/resources.prf:
/usr/local/Qt-Embedded-5.7.0/mkspecs/features/moc.prf:
/usr/local/Qt-Embedded-5.7.0/mkspecs/features/unix/opengl.prf:
/usr/local/Qt-Embedded-5.7.0/mkspecs/features/uic.prf:
/usr/local/Qt-Embedded-5.7.0/mkspecs/features/unix/thread.prf:
/usr/local/Qt-Embedded-5.7.0/mkspecs/features/file_copies.prf:
/usr/local/Qt-Embedded-5.7.0/mkspecs/features/testcase_targets.prf:
/usr/local/Qt-Embedded-5.7.0/mkspecs/features/exceptions.prf:
/usr/local/Qt-Embedded-5.7.0/mkspecs/features/yacc.prf:
/usr/local/Qt-Embedded-5.7.0/mkspecs/features/lex.prf:
demo2.pro:
/usr/local/Qt-Embedded-5.7.0/lib/libQt5Widgets.prl:
/usr/local/Qt-Embedded-5.7.0/lib/libQt5Gui.prl:
/usr/local/Qt-Embedded-5.7.0/lib/libQt5Core.prl:
qmake: FORCE
@$(QMAKE) -o Makefile demo2.pro
qmake_all: FORCE
all: Makefile $(TARGET)
dist: distdir FORCE
(cd `dirname $(DISTDIR)` && $(TAR) $(DISTNAME).tar $(DISTNAME) && $(COMPRESS) $(DISTNAME).tar) && $(MOVE) `dirname $(DISTDIR)`/$(DISTNAME).tar.gz . && $(DEL_FILE) -r $(DISTDIR)
distdir: FORCE
@test -d $(DISTDIR) || mkdir -p $(DISTDIR)
$(COPY_FILE) --parents $(DIST) $(DISTDIR)/
$(COPY_FILE) --parents mainwindow.h mycamera.h $(DISTDIR)/
$(COPY_FILE) --parents main.cpp mainwindow.cpp mycamera.cpp $(DISTDIR)/
$(COPY_FILE) --parents mainwindow.ui $(DISTDIR)/
clean: compiler_clean
-$(DEL_FILE) $(OBJECTS)
-$(DEL_FILE) *~ core *.core
distclean: clean
-$(DEL_FILE) $(TARGET)
-$(DEL_FILE) .qmake.stash
-$(DEL_FILE) Makefile
####### Sub-libraries
mocclean: compiler_moc_header_clean compiler_moc_source_clean
mocables: compiler_moc_header_make_all compiler_moc_source_make_all
check: first
benchmark: first
compiler_rcc_make_all:
compiler_rcc_clean:
compiler_moc_header_make_all: moc_mainwindow.cpp moc_mycamera.cpp
compiler_moc_header_clean:
-$(DEL_FILE) moc_mainwindow.cpp moc_mycamera.cpp
moc_mainwindow.cpp: /usr/local/Qt-Embedded-5.7.0/include/QtWidgets/QMainWindow \
/usr/local/Qt-Embedded-5.7.0/include/QtWidgets/qmainwindow.h \
/usr/local/Qt-Embedded-5.7.0/include/QtWidgets/qwidget.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qwindowdefs.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qglobal.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qconfig.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qfeatures.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qsystemdetection.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qprocessordetection.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qcompilerdetection.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qtypeinfo.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qtypetraits.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qisenum.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qsysinfo.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qlogging.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qflags.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qatomic.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qbasicatomic.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qatomic_bootstrap.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qgenericatomic.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qatomic_cxx11.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qatomic_msvc.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qglobalstatic.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qmutex.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qnumeric.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qversiontagging.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qobjectdefs.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qnamespace.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qobjectdefs_impl.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qwindowdefs_win.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qobject.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qstring.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qchar.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qbytearray.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qrefcount.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qarraydata.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qstringbuilder.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qlist.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qalgorithms.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qiterator.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qhashfunctions.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qpair.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qbytearraylist.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qstringlist.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qregexp.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qstringmatcher.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qcoreevent.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qscopedpointer.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qmetatype.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qvarlengtharray.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qcontainerfwd.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qobject_impl.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qmargins.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qpaintdevice.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qrect.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qsize.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qpoint.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qpalette.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qcolor.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qrgb.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qrgba64.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qbrush.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qvector.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qmatrix.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qpolygon.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qregion.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qdatastream.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qiodevice.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qline.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qtransform.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qpainterpath.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qimage.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qpixelformat.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qpixmap.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qsharedpointer.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qshareddata.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qhash.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qsharedpointer_impl.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qfont.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qfontmetrics.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qfontinfo.h \
/usr/local/Qt-Embedded-5.7.0/include/QtWidgets/qsizepolicy.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qcursor.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qkeysequence.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qevent.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qvariant.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qmap.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qdebug.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qtextstream.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qlocale.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qset.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qcontiguouscache.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qurl.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qurlquery.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qfile.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qfiledevice.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qvector2d.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qtouchdevice.h \
/usr/local/Qt-Embedded-5.7.0/include/QtWidgets/qtabwidget.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qicon.h \
mycamera.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/QTimer \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qtimer.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qbasictimer.h \
mainwindow.h \
/usr/local/Qt-Embedded-5.7.0/bin/moc
/usr/local/Qt-Embedded-5.7.0/bin/moc $(DEFINES) -I/usr/local/Qt-Embedded-5.7.0/mkspecs/linux-arm-gnueabi-g++ -I/mnt/hgfs/share/demo2 -I/usr/local/Qt-Embedded-5.7.0/include -I/usr/local/Qt-Embedded-5.7.0/include/QtWidgets -I/usr/local/Qt-Embedded-5.7.0/include/QtGui -I/usr/local/Qt-Embedded-5.7.0/include/QtCore -I/usr/local/arm/5.4.0/usr/arm-none-linux-gnueabi/include/c++/5.4.0 -I/usr/local/arm/5.4.0/usr/arm-none-linux-gnueabi/include/c++/5.4.0/arm-none-linux-gnueabi -I/usr/local/arm/5.4.0/usr/arm-none-linux-gnueabi/include/c++/5.4.0/backward -I/usr/local/arm/5.4.0/usr/lib/gcc/arm-none-linux-gnueabi/5.4.0/include -I/usr/local/arm/5.4.0/usr/lib/gcc/arm-none-linux-gnueabi/5.4.0/include-fixed -I/usr/local/arm/5.4.0/usr/arm-none-linux-gnueabi/include -I/usr/local/arm/5.4.0/usr/arm-none-linux-gnueabi/sysroot/usr/include mainwindow.h -o moc_mainwindow.cpp
moc_mycamera.cpp: /usr/local/Qt-Embedded-5.7.0/include/QtWidgets/QMainWindow \
/usr/local/Qt-Embedded-5.7.0/include/QtWidgets/qmainwindow.h \
/usr/local/Qt-Embedded-5.7.0/include/QtWidgets/qwidget.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qwindowdefs.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qglobal.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qconfig.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qfeatures.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qsystemdetection.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qprocessordetection.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qcompilerdetection.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qtypeinfo.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qtypetraits.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qisenum.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qsysinfo.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qlogging.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qflags.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qatomic.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qbasicatomic.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qatomic_bootstrap.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qgenericatomic.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qatomic_cxx11.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qatomic_msvc.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qglobalstatic.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qmutex.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qnumeric.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qversiontagging.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qobjectdefs.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qnamespace.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qobjectdefs_impl.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qwindowdefs_win.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qobject.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qstring.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qchar.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qbytearray.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qrefcount.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qarraydata.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qstringbuilder.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qlist.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qalgorithms.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qiterator.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qhashfunctions.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qpair.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qbytearraylist.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qstringlist.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qregexp.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qstringmatcher.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qcoreevent.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qscopedpointer.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qmetatype.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qvarlengtharray.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qcontainerfwd.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qobject_impl.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qmargins.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qpaintdevice.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qrect.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qsize.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qpoint.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qpalette.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qcolor.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qrgb.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qrgba64.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qbrush.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qvector.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qmatrix.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qpolygon.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qregion.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qdatastream.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qiodevice.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qline.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qtransform.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qpainterpath.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qimage.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qpixelformat.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qpixmap.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qsharedpointer.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qshareddata.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qhash.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qsharedpointer_impl.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qfont.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qfontmetrics.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qfontinfo.h \
/usr/local/Qt-Embedded-5.7.0/include/QtWidgets/qsizepolicy.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qcursor.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qkeysequence.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qevent.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qvariant.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qmap.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qdebug.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qtextstream.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qlocale.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qset.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qcontiguouscache.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qurl.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qurlquery.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qfile.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qfiledevice.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qvector2d.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qtouchdevice.h \
/usr/local/Qt-Embedded-5.7.0/include/QtWidgets/qtabwidget.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qicon.h \
mycamera.h \
/usr/local/Qt-Embedded-5.7.0/bin/moc
/usr/local/Qt-Embedded-5.7.0/bin/moc $(DEFINES) -I/usr/local/Qt-Embedded-5.7.0/mkspecs/linux-arm-gnueabi-g++ -I/mnt/hgfs/share/demo2 -I/usr/local/Qt-Embedded-5.7.0/include -I/usr/local/Qt-Embedded-5.7.0/include/QtWidgets -I/usr/local/Qt-Embedded-5.7.0/include/QtGui -I/usr/local/Qt-Embedded-5.7.0/include/QtCore -I/usr/local/arm/5.4.0/usr/arm-none-linux-gnueabi/include/c++/5.4.0 -I/usr/local/arm/5.4.0/usr/arm-none-linux-gnueabi/include/c++/5.4.0/arm-none-linux-gnueabi -I/usr/local/arm/5.4.0/usr/arm-none-linux-gnueabi/include/c++/5.4.0/backward -I/usr/local/arm/5.4.0/usr/lib/gcc/arm-none-linux-gnueabi/5.4.0/include -I/usr/local/arm/5.4.0/usr/lib/gcc/arm-none-linux-gnueabi/5.4.0/include-fixed -I/usr/local/arm/5.4.0/usr/arm-none-linux-gnueabi/include -I/usr/local/arm/5.4.0/usr/arm-none-linux-gnueabi/sysroot/usr/include mycamera.h -o moc_mycamera.cpp
compiler_moc_source_make_all:
compiler_moc_source_clean:
compiler_uic_make_all: ui_mainwindow.h
compiler_uic_clean:
-$(DEL_FILE) ui_mainwindow.h
ui_mainwindow.h: mainwindow.ui \
/usr/local/Qt-Embedded-5.7.0/bin/uic
/usr/local/Qt-Embedded-5.7.0/bin/uic mainwindow.ui -o ui_mainwindow.h
compiler_yacc_decl_make_all:
compiler_yacc_decl_clean:
compiler_yacc_impl_make_all:
compiler_yacc_impl_clean:
compiler_lex_make_all:
compiler_lex_clean:
compiler_clean: compiler_moc_header_clean compiler_uic_clean
####### Compile
main.o: main.cpp mainwindow.h \
/usr/local/Qt-Embedded-5.7.0/include/QtWidgets/QMainWindow \
/usr/local/Qt-Embedded-5.7.0/include/QtWidgets/qmainwindow.h \
/usr/local/Qt-Embedded-5.7.0/include/QtWidgets/qwidget.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qwindowdefs.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qglobal.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qconfig.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qfeatures.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qsystemdetection.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qprocessordetection.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qcompilerdetection.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qtypeinfo.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qtypetraits.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qisenum.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qsysinfo.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qlogging.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qflags.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qatomic.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qbasicatomic.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qatomic_bootstrap.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qgenericatomic.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qatomic_cxx11.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qatomic_msvc.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qglobalstatic.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qmutex.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qnumeric.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qversiontagging.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qobjectdefs.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qnamespace.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qobjectdefs_impl.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qwindowdefs_win.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qobject.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qstring.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qchar.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qbytearray.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qrefcount.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qarraydata.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qstringbuilder.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qlist.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qalgorithms.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qiterator.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qhashfunctions.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qpair.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qbytearraylist.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qstringlist.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qregexp.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qstringmatcher.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qcoreevent.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qscopedpointer.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qmetatype.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qvarlengtharray.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qcontainerfwd.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qobject_impl.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qmargins.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qpaintdevice.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qrect.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qsize.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qpoint.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qpalette.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qcolor.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qrgb.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qrgba64.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qbrush.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qvector.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qmatrix.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qpolygon.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qregion.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qdatastream.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qiodevice.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qline.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qtransform.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qpainterpath.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qimage.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qpixelformat.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qpixmap.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qsharedpointer.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qshareddata.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qhash.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qsharedpointer_impl.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qfont.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qfontmetrics.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qfontinfo.h \
/usr/local/Qt-Embedded-5.7.0/include/QtWidgets/qsizepolicy.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qcursor.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qkeysequence.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qevent.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qvariant.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qmap.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qdebug.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qtextstream.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qlocale.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qset.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qcontiguouscache.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qurl.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qurlquery.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qfile.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qfiledevice.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qvector2d.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qtouchdevice.h \
/usr/local/Qt-Embedded-5.7.0/include/QtWidgets/qtabwidget.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qicon.h \
mycamera.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/QTimer \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qtimer.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qbasictimer.h \
/usr/local/Qt-Embedded-5.7.0/include/QtWidgets/QApplication \
/usr/local/Qt-Embedded-5.7.0/include/QtWidgets/qapplication.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qcoreapplication.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qeventloop.h \
/usr/local/Qt-Embedded-5.7.0/include/QtWidgets/qdesktopwidget.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qguiapplication.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qinputmethod.h
$(CXX) -c $(CXXFLAGS) $(INCPATH) -o main.o main.cpp
mainwindow.o: mainwindow.cpp mainwindow.h \
/usr/local/Qt-Embedded-5.7.0/include/QtWidgets/QMainWindow \
/usr/local/Qt-Embedded-5.7.0/include/QtWidgets/qmainwindow.h \
/usr/local/Qt-Embedded-5.7.0/include/QtWidgets/qwidget.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qwindowdefs.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qglobal.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qconfig.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qfeatures.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qsystemdetection.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qprocessordetection.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qcompilerdetection.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qtypeinfo.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qtypetraits.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qisenum.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qsysinfo.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qlogging.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qflags.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qatomic.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qbasicatomic.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qatomic_bootstrap.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qgenericatomic.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qatomic_cxx11.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qatomic_msvc.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qglobalstatic.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qmutex.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qnumeric.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qversiontagging.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qobjectdefs.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qnamespace.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qobjectdefs_impl.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qwindowdefs_win.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qobject.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qstring.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qchar.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qbytearray.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qrefcount.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qarraydata.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qstringbuilder.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qlist.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qalgorithms.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qiterator.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qhashfunctions.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qpair.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qbytearraylist.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qstringlist.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qregexp.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qstringmatcher.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qcoreevent.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qscopedpointer.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qmetatype.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qvarlengtharray.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qcontainerfwd.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qobject_impl.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qmargins.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qpaintdevice.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qrect.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qsize.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qpoint.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qpalette.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qcolor.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qrgb.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qrgba64.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qbrush.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qvector.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qmatrix.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qpolygon.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qregion.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qdatastream.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qiodevice.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qline.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qtransform.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qpainterpath.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qimage.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qpixelformat.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qpixmap.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qsharedpointer.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qshareddata.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qhash.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qsharedpointer_impl.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qfont.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qfontmetrics.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qfontinfo.h \
/usr/local/Qt-Embedded-5.7.0/include/QtWidgets/qsizepolicy.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qcursor.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qkeysequence.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qevent.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qvariant.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qmap.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qdebug.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qtextstream.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qlocale.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qset.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qcontiguouscache.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qurl.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qurlquery.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qfile.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qfiledevice.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qvector2d.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qtouchdevice.h \
/usr/local/Qt-Embedded-5.7.0/include/QtWidgets/qtabwidget.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qicon.h \
mycamera.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/QTimer \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qtimer.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qbasictimer.h \
ui_mainwindow.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/QVariant \
/usr/local/Qt-Embedded-5.7.0/include/QtWidgets/QAction \
/usr/local/Qt-Embedded-5.7.0/include/QtWidgets/qaction.h \
/usr/local/Qt-Embedded-5.7.0/include/QtWidgets/qactiongroup.h \
/usr/local/Qt-Embedded-5.7.0/include/QtWidgets/QApplication \
/usr/local/Qt-Embedded-5.7.0/include/QtWidgets/qapplication.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qcoreapplication.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qeventloop.h \
/usr/local/Qt-Embedded-5.7.0/include/QtWidgets/qdesktopwidget.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qguiapplication.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qinputmethod.h \
/usr/local/Qt-Embedded-5.7.0/include/QtWidgets/QButtonGroup \
/usr/local/Qt-Embedded-5.7.0/include/QtWidgets/qbuttongroup.h \
/usr/local/Qt-Embedded-5.7.0/include/QtWidgets/QHeaderView \
/usr/local/Qt-Embedded-5.7.0/include/QtWidgets/qheaderview.h \
/usr/local/Qt-Embedded-5.7.0/include/QtWidgets/qabstractitemview.h \
/usr/local/Qt-Embedded-5.7.0/include/QtWidgets/qabstractscrollarea.h \
/usr/local/Qt-Embedded-5.7.0/include/QtWidgets/qframe.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qabstractitemmodel.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qitemselectionmodel.h \
/usr/local/Qt-Embedded-5.7.0/include/QtWidgets/qabstractitemdelegate.h \
/usr/local/Qt-Embedded-5.7.0/include/QtWidgets/qstyleoption.h \
/usr/local/Qt-Embedded-5.7.0/include/QtWidgets/qabstractspinbox.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qvalidator.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qregularexpression.h \
/usr/local/Qt-Embedded-5.7.0/include/QtWidgets/qslider.h \
/usr/local/Qt-Embedded-5.7.0/include/QtWidgets/qabstractslider.h \
/usr/local/Qt-Embedded-5.7.0/include/QtWidgets/qstyle.h \
/usr/local/Qt-Embedded-5.7.0/include/QtWidgets/qtabbar.h \
/usr/local/Qt-Embedded-5.7.0/include/QtWidgets/qrubberband.h \
/usr/local/Qt-Embedded-5.7.0/include/QtWidgets/QLabel \
/usr/local/Qt-Embedded-5.7.0/include/QtWidgets/qlabel.h \
/usr/local/Qt-Embedded-5.7.0/include/QtWidgets/QMenuBar \
/usr/local/Qt-Embedded-5.7.0/include/QtWidgets/qmenubar.h \
/usr/local/Qt-Embedded-5.7.0/include/QtWidgets/qmenu.h \
/usr/local/Qt-Embedded-5.7.0/include/QtWidgets/QPushButton \
/usr/local/Qt-Embedded-5.7.0/include/QtWidgets/qpushbutton.h \
/usr/local/Qt-Embedded-5.7.0/include/QtWidgets/qabstractbutton.h \
/usr/local/Qt-Embedded-5.7.0/include/QtWidgets/QStatusBar \
/usr/local/Qt-Embedded-5.7.0/include/QtWidgets/qstatusbar.h \
/usr/local/Qt-Embedded-5.7.0/include/QtWidgets/QWidget
$(CXX) -c $(CXXFLAGS) $(INCPATH) -o mainwindow.o mainwindow.cpp
mycamera.o: mycamera.cpp mycamera.h \
/usr/local/Qt-Embedded-5.7.0/include/QtWidgets/QMainWindow \
/usr/local/Qt-Embedded-5.7.0/include/QtWidgets/qmainwindow.h \
/usr/local/Qt-Embedded-5.7.0/include/QtWidgets/qwidget.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qwindowdefs.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qglobal.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qconfig.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qfeatures.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qsystemdetection.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qprocessordetection.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qcompilerdetection.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qtypeinfo.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qtypetraits.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qisenum.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qsysinfo.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qlogging.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qflags.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qatomic.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qbasicatomic.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qatomic_bootstrap.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qgenericatomic.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qatomic_cxx11.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qatomic_msvc.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qglobalstatic.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qmutex.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qnumeric.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qversiontagging.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qobjectdefs.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qnamespace.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qobjectdefs_impl.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qwindowdefs_win.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qobject.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qstring.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qchar.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qbytearray.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qrefcount.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qarraydata.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qstringbuilder.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qlist.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qalgorithms.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qiterator.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qhashfunctions.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qpair.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qbytearraylist.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qstringlist.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qregexp.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qstringmatcher.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qcoreevent.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qscopedpointer.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qmetatype.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qvarlengtharray.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qcontainerfwd.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qobject_impl.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qmargins.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qpaintdevice.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qrect.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qsize.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qpoint.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qpalette.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qcolor.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qrgb.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qrgba64.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qbrush.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qvector.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qmatrix.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qpolygon.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qregion.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qdatastream.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qiodevice.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qline.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qtransform.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qpainterpath.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qimage.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qpixelformat.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qpixmap.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qsharedpointer.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qshareddata.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qhash.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qsharedpointer_impl.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qfont.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qfontmetrics.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qfontinfo.h \
/usr/local/Qt-Embedded-5.7.0/include/QtWidgets/qsizepolicy.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qcursor.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qkeysequence.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qevent.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qvariant.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qmap.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qdebug.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qtextstream.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qlocale.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qset.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qcontiguouscache.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qurl.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qurlquery.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qfile.h \
/usr/local/Qt-Embedded-5.7.0/include/QtCore/qfiledevice.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qvector2d.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qtouchdevice.h \
/usr/local/Qt-Embedded-5.7.0/include/QtWidgets/qtabwidget.h \
/usr/local/Qt-Embedded-5.7.0/include/QtGui/qicon.h
$(CXX) -c $(CXXFLAGS) $(INCPATH) -o mycamera.o mycamera.cpp
moc_mainwindow.o: moc_mainwindow.cpp
$(CXX) -c $(CXXFLAGS) $(INCPATH) -o moc_mainwindow.o moc_mainwindow.cpp
moc_mycamera.o: moc_mycamera.cpp
$(CXX) -c $(CXXFLAGS) $(INCPATH) -o moc_mycamera.o moc_mycamera.cpp
####### Install
install_target: first FORCE
@test -d $(INSTALL_ROOT)/opt/demo2/bin || mkdir -p $(INSTALL_ROOT)/opt/demo2/bin
-$(INSTALL_PROGRAM) $(QMAKE_TARGET) $(INSTALL_ROOT)/opt/demo2/bin/$(QMAKE_TARGET)
-$(STRIP) $(INSTALL_ROOT)/opt/demo2/bin/$(QMAKE_TARGET)
uninstall_target: FORCE
-$(DEL_FILE) $(INSTALL_ROOT)/opt/demo2/bin/$(QMAKE_TARGET)
-$(DEL_DIR) $(INSTALL_ROOT)/opt/demo2/bin/
install: install_target FORCE
uninstall: uninstall_target FORCE
FORCE:
【9】用定时器实现V4L2摄像头显示源码
【V4L2.pro】
QT += core gui
greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
CONFIG += c++11
# The following define makes your compiler emit warnings if you use
# any Qt feature that has been marked deprecated (the exact warnings
# depend on your compiler). Please consult the documentation of the
# deprecated API in order to know how to port your code away from it.
DEFINES += QT_DEPRECATED_WARNINGS
# You can also make your code fail to compile if it uses deprecated APIs.
# In order to do so, uncomment the following line.
# You can also select to disable deprecated APIs only up to a certain version of Qt.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000 # disables all the APIs deprecated before Qt 6.0.0
SOURCES += \
main.cpp \
mainwindow.cpp \
mycamera.cpp
HEADERS += \
mainwindow.h \
mycamera.h
FORMS += \
mainwindow.ui
# Default rules for deployment.
qnx: target.path = /tmp/$${
TARGET}/bin
else: unix:!android: target.path = /opt/$${
TARGET}/bin
!isEmpty(target.path): INSTALLS += target
【mycamera.h】
#ifndef MYCAMERA_H
#define MYCAMERA_H
#include <QMainWindow>
#include <stdio.h>
#include <linux/videodev2.h> //V4L2对应的头文件
#include <stropts.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/mman.h>
#include <string.h>
#include <unistd.h>
#include <sys/select.h>
#define W 640
#define H 480
//自定义结构体，用来存放每个缓冲块的首地址和大小
struct bufmsg
{
void *start; //缓冲块的首地址
int somelen; //缓冲块的大小
};
class mycamera : public QMainWindow
{
Q_OBJECT
public:
explicit mycamera(QWidget *parent = nullptr);
//摄像头的初始化
int camera_init();
//摄像头捕捉显示画面
int camera_capture();
//关闭摄像头
int camera_uninit();
signals:
private:
int lcdfd;
int *lcdmem;
int camerafd;
//分配缓冲块顺便映射得到4个缓冲块的首地址
struct v4l2_buffer otherbuf;
//定义结构体数组存放4个缓冲块的首地址和大小
struct bufmsg array[4];
enum v4l2_buf_type mytype;
};
#endif // MYCAMERA_H
【mainwindow.h】
#ifndef MAINWINDOW_H
#define MAINWINDOW_H
#include <QMainWindow>
#include "mycamera.h"
#include <QTimer>
QT_BEGIN_NAMESPACE
namespace Ui {
class MainWindow; }
QT_END_NAMESPACE
class MainWindow : public QMainWindow
{
Q_OBJECT
public:
MainWindow(QWidget *parent = nullptr);
~MainWindow();
private slots:
void on_startbt_clicked();
void on_closebt_clicked();
void fun();
private:
Ui::MainWindow *ui;
mycamera cam;
QTimer mytimer;
};
#endif // MAINWINDOW_H
【main.cpp】
#include "mainwindow.h"
#include <QApplication>
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
MainWindow w;
w.show();
return a.exec();
}
【mainwindow.cpp】
#include "mainwindow.h"
#include "ui_mainwindow.h"
MainWindow::MainWindow(QWidget *parent)
: QMainWindow(parent)
, ui(new Ui::MainWindow)
{
ui->setupUi(this);
//构造函数中初始化摄像头
cam.camera_init();
//设置定时时间
mytimer.setInterval(50);
//关联timeout信号
connect(&mytimer,SIGNAL(timeout()),this,SLOT(fun()));
}
MainWindow::~MainWindow()
{
//在析构函数中关闭摄像头
cam.camera_uninit();
delete ui;
}
//启动摄像头(实际上是启动定时器，在定时器中不断地捕捉画面)
void MainWindow::on_startbt_clicked()
{
mytimer.start();
}
//关闭摄像头(实际上是关闭定时器)
void MainWindow::on_closebt_clicked()
{
mytimer.stop();
}
//跟定时器超时对应的槽函数
void MainWindow::fun()
{
cam.camera_capture();
}
【mycamera.cpp】
#include "mycamera.h"
//封装函数--》把一组YUV--》转换ARGB数据
int yuvtoargb(int y,int u,int v)
{
int r,g,b;
int pix;
r = y + 1.4075*( v - 128);
g = y - 0.3455*( u - 128) - 0.7169*( v - 128);
b = y + 1.779*( u - 128);
//修正计算结果 0---255之间
if(r>255)
r=255;
if(g>255)
g=255;
if(b>255)
b=255;
if(r<0)
r=0;
if(g<0)
g=0;
if(b<0)
b=0;
//把rgb拼接得到ARGB
pix=0x00<<24|r<<16|g<<8|b;
return pix;
}
//封装函数--》把一帧画面数据中所有的YUYV数据转换成ARGB数据
//参数：yuv --》指向一帧yuyv画面首地址
// argbbuf --》存放转换得到的完整的ARGB数据
//allyuvtoargb(array[i].start,argbbuf)
/*
yuv[0]--第一个Y
yuv[1]-- U
yuv[2]--第二个Y
yuv[3]-- V
*/
int allyuvtoargb(char *yuv,int *argbbuf)
{
int i,j;
for(i=0,j=0; i<W*H; i+=2,j+=4)
{
//一组YUYV转换得到两组ARGB数据
argbbuf[i]=yuvtoargb(yuv[j],yuv[j+1],yuv[j+3]);
argbbuf[i+1]=yuvtoargb(yuv[j+2],yuv[j+1],yuv[j+3]);
}
return 0;
}
mycamera::mycamera(QWidget *parent) : QMainWindow(parent)
{
}
//摄像头初始化
int mycamera::camera_init()
{
int ret;
int i;
//打开lcd
lcdfd=open("/dev/fb0",O_RDWR);
if(lcdfd==-1)
{
perror("打开lcd失败!\n");
return -1;
}
//映射得到lcd的首地址
lcdmem=(int *)mmap(NULL,800*480*4,PROT_READ|PROT_WRITE,MAP_SHARED,lcdfd,0);
if(lcdmem==NULL)
{
perror("映射lcd失败了!\n");
return -1;
}
//打开摄像头的驱动
camerafd=open("/dev/video7",O_RDWR);
if(camerafd==-1)
{
perror("打开摄像头失败!\n");
return -1;
}
//设置摄像头采集格式
struct v4l2_format myfmt;
bzero(&myfmt,sizeof(myfmt));
myfmt.type=V4L2_BUF_TYPE_VIDEO_CAPTURE;
myfmt.fmt.pix.width=W;
myfmt.fmt.pix.height=H;
myfmt.fmt.pix.pixelformat=V4L2_PIX_FMT_YUYV;
ret=ioctl(camerafd,VIDIOC_S_FMT,&myfmt);
if(ret==-1)
{
perror("设置采集格式失败!\n");
return -1;
}
//申请4个缓冲块
struct v4l2_requestbuffers mybuf;
bzero(&mybuf,sizeof(mybuf));
mybuf.count=4; //4个缓冲块
mybuf.type=V4L2_BUF_TYPE_VIDEO_CAPTURE;
mybuf.memory=V4L2_MEMORY_MMAP;
ret=ioctl(camerafd,VIDIOC_REQBUFS,&mybuf);
if(ret==-1)
{
perror("申请缓冲块失败!\n");
return -1;
}
for(i=0; i<4; i++)
{
bzero(&otherbuf,sizeof(otherbuf));
otherbuf.index=i; //索引号
otherbuf.type=V4L2_BUF_TYPE_VIDEO_CAPTURE;
otherbuf.memory=V4L2_MEMORY_MMAP;
ret=ioctl(camerafd,VIDIOC_QUERYBUF,&otherbuf);
if(ret==-1)
{
perror("分配缓冲块失败!\n");
return -1;
}
//顺便映射得到4个缓冲块的首地址
array[i].somelen=otherbuf.length;
array[i].start=mmap(NULL,otherbuf.length,PROT_READ|PROT_WRITE,MAP_SHARED,camerafd,otherbuf.m.offset);
if(array[i].start==NULL)
{
perror("映射缓冲块失败了!\n");
return -1;
}
//顺便发送入队申请(一旦摄像头启动了,立马把画面入队)
ret=ioctl(camerafd,VIDIOC_QBUF,&otherbuf);
if(ret==-1)
{
perror("入队失败!\n");
return -1;
}
}
//启动摄像头捕捉
mytype=V4L2_BUF_TYPE_VIDEO_CAPTURE;
ret=ioctl(camerafd,VIDIOC_STREAMON,&mytype);
if(ret==-1)
{
perror("启动摄像头捕捉失败!\n");
return -1;
}
return 0;
}
//摄像头捕捉画面，显示
int mycamera::camera_capture()
{
int ret;
int i,j;
//定义一个数组存放转换得到的一帧完整的ARGB数据
int argbbuf[W*H];
//定义集合存放要监测的文件描述符
fd_set myset;
FD_ZERO(&myset);
FD_SET(camerafd,&myset);
//让摄像头画面循环出队，入队形成视频流在lcd上显示出来
for(i=0; i<4; i++)
{
//监测摄像头队列中是否有数据可读
ret=select(camerafd+1,&myset,NULL,NULL,NULL);
if(ret>0) //说明摄像头的缓冲区中有画面入队了
{
//出队
bzero(&otherbuf,sizeof(otherbuf));
otherbuf.index=i; //索引号
otherbuf.type=V4L2_BUF_TYPE_VIDEO_CAPTURE;
otherbuf.memory=V4L2_MEMORY_MMAP;
ret=ioctl(camerafd,VIDIOC_DQBUF,&otherbuf);
if(ret==-1)
{
perror("出队失败!\n");
return -1;
}
//出队画面(在结构体数组里面存放着)在lcd上显示出来
//array[i].start --》 当前出队的画面数据(YUV格式)首地址
//array[i].somelen --》当前出队的画面数据大小
//YUV格式无法直接在lcd上显示，原因是lcd只能显示ARGB数据
/*
第一行数据: argbbuf[0]--argbbuf[W-1]
lcdmem
第二行数据: argbbuf[W]--argbbuf[2*W-1]
lcdmem+下一行
*/
allyuvtoargb((char *)(array[i].start),argbbuf);
//把argbbuf中的数据填充到lcd对应的位置
for(j=0; j<H; j++)
memcpy(lcdmem+80+800*j,&argbbuf[W*j],W*4);
//入队
ret=ioctl(camerafd,VIDIOC_QBUF,&otherbuf);
if(ret==-1)
{
perror("入队失败!\n");
return -1;
}
}
}
return 0;
}
//摄像头关闭
int mycamera::camera_uninit()
{
int ret;
int i;
//收尾
ret=ioctl(camerafd,VIDIOC_STREAMOFF,&mytype);
if(ret==-1)
{
perror("关闭摄像头捕捉失败!\n");
return -1;
}
munmap(lcdmem,800*480*4);
for(i=0; i<4; i++)
munmap(array[i].start,array[i].somelen);
::close(lcdfd);
::close(camerafd);
return 0;
}
【mainwindow.ui】
<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
<class>MainWindow</class>
<widget class="QMainWindow" name="MainWindow">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>800</width>
<height>480</height>
</rect>
</property>
<property name="windowTitle">
<string>MainWindow</string>
</property>
<widget class="QWidget" name="centralwidget">
<widget class="QPushButton" name="startbt">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>80</width>
<height>480</height>
</rect>
</property>
<property name="text">
<string>启动</string>
</property>
</widget>
<widget class="QPushButton" name="closebt">
<property name="geometry">
<rect>
<x>720</x>
<y>0</y>
<width>80</width>
<height>480</height>
</rect>
</property>
<property name="text">
<string>关闭</string>
</property>
</widget>
<widget class="QLabel" name="label">
<property name="geometry">
<rect>
<x>80</x>
<y>0</y>
<width>640</width>
<height>480</height>
</rect>
</property>
<property name="styleSheet">
<string notr="true">background-color: rgb(255, 0, 0);</string>
</property>
<property name="text">
<string/>
</property>
</widget>
</widget>
<widget class="QMenuBar" name="menubar">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>800</width>
<height>23</height>
</rect>
</property>
</widget>
<widget class="QStatusBar" name="statusbar"/>
</widget>
<resources/>
<connections/>
</ui>
转载：https://blog.csdn.net/m0_45463480/article/details/127853425
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