mirror of
https://github.com/ZLMediaKit/ZLMediaKit.git
synced 2024-11-23 03:10:04 +08:00
97 lines
2.8 KiB
C++
97 lines
2.8 KiB
C++
/*
|
|
* Copyright (c) 2016 The ZLMediaKit project authors. All Rights Reserved.
|
|
*
|
|
* This file is part of ZLMediaKit(https://github.com/xia-chu/ZLMediaKit).
|
|
*
|
|
* Use of this source code is governed by MIT license that can be found in the
|
|
* LICENSE file in the root of the source tree. All contributing project authors
|
|
* may be found in the AUTHORS file in the root of the source tree.
|
|
*/
|
|
|
|
#ifndef H264Decoder_H_
|
|
#define H264Decoder_H_
|
|
#include <string>
|
|
#include <memory>
|
|
#include <stdexcept>
|
|
#include "Extension/Frame.h"
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
//#include "libavutil/mathematics.h"
|
|
#include "libavcodec/avcodec.h"
|
|
//#include "libswscale/swscale.h"
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
using namespace std;
|
|
|
|
namespace mediakit {
|
|
|
|
class FFMpegDecoder{
|
|
public:
|
|
FFMpegDecoder(int codec_id){
|
|
auto ff_codec_id = AV_CODEC_ID_H264;
|
|
switch (codec_id){
|
|
case CodecH264:
|
|
ff_codec_id = AV_CODEC_ID_H264;
|
|
break;
|
|
case CodecH265:
|
|
ff_codec_id = AV_CODEC_ID_H265;
|
|
break;
|
|
default:
|
|
throw std::invalid_argument("不支持该编码格式");
|
|
}
|
|
avcodec_register_all();
|
|
AVCodec *pCodec = avcodec_find_decoder(ff_codec_id);
|
|
if (!pCodec) {
|
|
throw std::runtime_error("未找到解码器");
|
|
}
|
|
m_pContext.reset(avcodec_alloc_context3(pCodec), [](AVCodecContext *pCtx) {
|
|
avcodec_close(pCtx);
|
|
avcodec_free_context(&pCtx);
|
|
});
|
|
if (!m_pContext) {
|
|
throw std::runtime_error("创建解码器失败");
|
|
}
|
|
if (pCodec->capabilities & AV_CODEC_CAP_TRUNCATED) {
|
|
/* we do not send complete frames */
|
|
m_pContext->flags |= AV_CODEC_FLAG_TRUNCATED;
|
|
}
|
|
if(avcodec_open2(m_pContext.get(), pCodec, NULL)< 0){
|
|
throw std::runtime_error("打开编码器失败");
|
|
}
|
|
m_pFrame.reset(av_frame_alloc(),[](AVFrame *pFrame){
|
|
av_frame_free(&pFrame);
|
|
});
|
|
if (!m_pFrame) {
|
|
throw std::runtime_error("创建帧缓存失败");
|
|
}
|
|
}
|
|
virtual ~FFMpegDecoder(void){}
|
|
bool inputVideo(unsigned char* data,unsigned int dataSize,uint32_t ui32Stamp,AVFrame **ppFrame){
|
|
AVPacket pkt;
|
|
av_init_packet(&pkt);
|
|
pkt.data = data;
|
|
pkt.size = dataSize;
|
|
pkt.dts = ui32Stamp;
|
|
int iGotPicture ;
|
|
auto iLen = avcodec_decode_video2(m_pContext.get(), m_pFrame.get(), &iGotPicture, &pkt);
|
|
if (!iGotPicture || iLen < 0) {
|
|
return false;
|
|
}
|
|
*ppFrame = m_pFrame.get();
|
|
return true;
|
|
}
|
|
private:
|
|
std::shared_ptr<AVCodecContext> m_pContext;
|
|
std::shared_ptr<AVFrame> m_pFrame;
|
|
};
|
|
|
|
|
|
} /* namespace mediakit */
|
|
|
|
#endif /* H264Decoder_H_ */
|
|
|
|
|