#include?“Decoder.h“
#include?“ShareHeader.h“

CDecoder::CDecoder（const?char?*_fpath）
:?m_filePath（_fpath）
?m_VideoStream（-1）
{

}

CDecoder::~CDecoder（）
{
	uninit（）;
}

void?CDecoder::init（DECODERFORMAT?_fmt）
{
	RETURN_H264（_access（m_filePath.c_str（）?0）?==?-1?“file?does?not?existed.\n“）;

	//get?a?AVFormatContext.
	m_pFmtContext?=?avformat_alloc_context（）;
	RETURN_H264（m_pFmtContext?==?0?“Decoder?initialize?fail.\n“）;

	//open?video?file.
	RETURN_H264（avformat_open_input（&m_pFmtContext?m_filePath.c_str（）?NULL?NULL）?
	//get?streams?information.
	RETURN_H264（avformat_find_stream_info（m_pFmtContext?NULL）?
	//get?video?stream.
	for?（unsigned?int?i?=?0;?i?nb_streams;?++i）
	{
		if?（m_pFmtContext->streams[i]->codecpar->codec_type?==?AVMEDIA_TYPE_VIDEO）
		{
			m_VideoStream?=?i;
			break;
		}
	}

	//get?decoder.
	AVCodec?*pDecoder?=?avcodec_find_decoder（m_pFmtContext->streams[m_VideoStream]->codecpar->codec_id）;
	RETURN_H264（pDecoder?==?0?“was?not?find?decoder.\n“）;
	//allloc?a?AVCodecContext.
	m_pCodecContext?=?avcodec_alloc_context3（pDecoder）;
	RETURN_H264（m_pCodecContext?==?0?“alloc?AVCodecContext?fail.\n“）;
	//codec?paramter?to?AVCodecContext.
	avcodec_parameters_to_context（m_pCodecContext?m_pFmtContext->streams[m_VideoStream]->codecpar）;

	//open?decoder.
	RETURN_H264（avcodec_open2（m_pCodecContext?pDecoder?NULL）?
	//alloc?frame?to?deal?with?data.
	m_pframeData?=?av_frame_alloc（）;
	m_pframeRGBA?=?av_frame_alloc（）;

	//make?sure?the?size?of?picture.
	switch?（_fmt）
	{
	case?FMT_BGR24:?m_src_pix_fmt?=?AV_PIX_FMT_BGR24;?break;
	case?FMT_RGB24:?m_src_pix_fmt?=?AV_PIX_FMT_RGB24;?break;
	//case?FMT_RGBA:??m_src_pix_fmt?=?AV_PIX_FMT_RGBA;??break;
	default:break;
	}
	int?_size?=?av_image_get_buffer_size（m_src_pix_fmt?m_pCodecContext->width?m_pCodecContext->height?2）;
	uint8_t?*_buf?=?（uint8_t?*）av_malloc（_size）;
	av_image_fill_arrays（m_pframeRGBA->data?m_pframeRGBA->linesize?_buf?m_src_pix_fmt?m_pCodecContext->width?m_pCodecContext->height?2）;

	//get?a?swsContext?by?format.
	m_pSwsContext?=?sws_getContext（
		m_pCodecContext->width?m_pCodecContext->height?m_pCodecContext->pix_fmt
		m_pCodecContext->width?m_pCodecContext->height?m_src_pix_fmt
		SWS_BICUBIC?NULL?NULL?NULL）;
	RETURN_H264（m_pSwsContext?==?0?“get?a?swsContext?fail.\n“）;
}

void?CDecoder::setCallBack（PICTUREDATA?_func）
{
	m_pFunc?=?_func;
}

void?CDecoder::Procframe（）
{
	RETURN_H264（m_pFmtContext?==?0?||?m_pCodecContext?==?0?||?m_pframeData?==?0?||?m_pframeRGBA?==?0?||?m_pSwsContext?==?0
		“paramters?is?null.\n“）;

	AVPacket?packet;
	while?（m_VideoStream?!=?-1?&&?m_bExit?==?false）
	{
		if?（m_bPause）
		{
			std::this_thread::sleep_for（std::chrono::milliseconds（100））;
			continue;
		}

		BREAK_H264（av_read_frame（m_pFmtContext?&packet）?			“read?frame?fail?or?eof.\n“）;

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????1899??2018-10-09?11:11??H264\FFmpeg2Video.sln

?????文件???????1207??2018-07-25?16:41??H264\include\libavcodec\ac3_parser.h

?????文件???????1354??2018-07-25?16:41??H264\include\libavcodec\adts_parser.h

?????文件?????211684??2018-07-25?16:41??H264\include\libavcodec\avcodec.h

?????文件???????2570??2018-07-25?16:41??H264\include\libavcodec\avdct.h

?????文件???????3111??2018-07-25?16:41??H264\include\libavcodec\avfft.h

?????文件???????2853??2018-07-25?16:41??H264\include\libavcodec\d3d11va.h

?????文件???????4044??2018-07-25?16:41??H264\include\libavcodec\dirac.h

?????文件???????3715??2018-07-25?16:41??H264\include\libavcodec\dv_profile.h

?????文件???????2361??2018-07-25?16:41??H264\include\libavcodec\dxva2.h

?????文件???????1650??2018-07-25?16:41??H264\include\libavcodec\jni.h

?????文件???????2825??2018-07-25?16:41??H264\include\libavcodec\mediacodec.h

?????文件???????3763??2018-07-25?16:41??H264\include\libavcodec\qsv.h

?????文件???????2297??2018-07-25?16:41??H264\include\libavcodec\vaapi.h

?????文件???????5796??2018-07-25?16:41??H264\include\libavcodec\vdpau.h

?????文件???????4785??2018-07-25?16:41??H264\include\libavcodec\version.h

?????文件???????4029??2018-07-25?16:41??H264\include\libavcodec\videotoolbox.h

?????文件???????2285??2018-07-25?16:41??H264\include\libavcodec\vorbis_parser.h

?????文件???????6062??2018-07-25?16:41??H264\include\libavcodec\xvmc.h

?????文件??????17918??2018-07-25?16:41??H264\include\libavdevice\avdevice.h

?????文件???????1861??2018-07-25?16:41??H264\include\libavdevice\version.h

?????文件??????42263??2018-07-25?16:41??H264\include\libavfilter\avfilter.h

?????文件???????6316??2018-07-25?16:41??H264\include\libavfilter\buffersink.h

?????文件???????6608??2018-07-25?16:41??H264\include\libavfilter\buffersrc.h

?????文件???????2334??2018-07-25?16:41??H264\include\libavfilter\version.h

?????文件?????117558??2018-07-25?16:41??H264\include\libavformat\avformat.h

?????文件??????31557??2018-07-25?16:41??H264\include\libavformat\avio.h

?????文件???????3781??2018-07-25?16:41??H264\include\libavformat\version.h

?????文件???????1673??2018-07-25?16:41??H264\include\libavutil\adler32.h

?????文件???????1834??2018-07-25?16:41??H264\include\libavutil\aes.h

............此處省略380個文件信息