QT下开发的音视频播放器，支持RTMP推流，支持软硬解码，支持单路与多路播放，支持本地文件与实时流播放，支持录像截图等

#include "ctffmpeg.h" #include <QImage> #include "ctaudioplayer.h" #include <QPixmap> #include <QDate> #include <QTime> #include <QThread> #pragma execution_character_set("utf-8") static enum AVPixelFormat HwGetFormat(AVCodecContext *pAvctx, const enum AVPixelFormat *pPixFmts) { const enum AVPixelFormat *p; ctFFmpeg* pFFmpeg = (ctFFmpeg*)pAvctx->opaque; for (p = pPixFmts; *p != -1; p++) { if (*p == pFFmpeg->m_hwPixFmt) { return *p; } } MY_DEBUG << "Get HW surface format failed."; return AV_PIX_FMT_NONE; } static int HwDecoderInit(AVCodecContext *pAvctx, const enum AVHWDeviceType type) { MY_DEBUG << "HwDecoderInit 000"; ctFFmpeg* pFFmpeg = (ctFFmpeg *)pAvctx->opaque; int nErr = av_hwdevice_ctx_create(&pFFmpeg->m_pHwDevCtx, type, nullptr, nullptr, 0); if (nErr < 0) { MY_DEBUG << "Create specified HW device failed."; return nErr; } MY_DEBUG << "HwDecoderInit 111"; pAvctx->hw_device_ctx = av_buffer_ref(pFFmpeg->m_pHwDevCtx); MY_DEBUG << "HwDecoderInit 222"; return nErr; } ctFFmpeg::ctFFmpeg() { } ctFFmpeg::~ctFFmpeg() { } int ctFFmpeg::Init(QString sUrl, int nProtocolType, int nDecodeType, int nShowType, bool bEnablePush, QString sServerAddr, ShareQueue *pQueue) { MY_DEBUG << "ctFFmpeg::Init sUrl:" << sUrl << " start."; //AVCodec *pvAVCodec = nullptr; // ffmpeg low than 5.1 const AVCodec *pvAVCodec = nullptr; //ffmpeg 5.1 m_bNeedToRecon = false; m_bQuit = false; if(sUrl.contains("rtsp://") || sUrl.contains("http://")) //实时流 m_nPlayWay = MEDIA_PLAY_STREAM; else m_nPlayWay = MEDIA_PLAY_FILE; avformat_network_init();//初始化网络流 //参数设置 AVDictionary* pOptDict = NULL; if(nProtocolType == MEDIA_PROTOCOL_UDP) { MY_DEBUG << "UDP"; av_dict_set(&pOptDict, "rtsp_transport", "udp", 0); } else { MY_DEBUG << "TCP"; av_dict_set(&pOptDict, "rtsp_transport", "tcp", 0); } m_nProtocolType = nProtocolType; m_nDecodeType = nDecodeType; m_nShowType = nShowType; m_bEnablePush = bEnablePush; m_pShareQueue = pQueue; m_sRtmpServerAddr = sServerAddr; av_dict_set(&pOptDict, "stimeout", "5000000", 0); av_dict_set(&pOptDict, "buffer_size", "8192000", 0); av_dict_set(&pOptDict, "recv_buffer_size", "4096000", 0); // 防止花屏, max 4M. av_dict_set(&pOptDict, "tune", "stillimage,fastdecode,zerolatency", 0);//快速解码和低延时 if(nullptr == m_pAVFmtCxt) m_pAVFmtCxt = avformat_alloc_context(); if(nullptr == m_pYuvFrame) m_pYuvFrame = av_frame_alloc(); if(nullptr == m_pDstVideoFrame) m_pDstVideoFrame = av_frame_alloc(); if(nullptr == m_pPcmFrame) m_pPcmFrame = av_frame_alloc(); if(nullptr == m_pFilterFrame) m_pFilterFrame = av_frame_alloc(); if(nullptr == m_pHwFrame) m_pHwFrame = av_frame_alloc(); //加入中断处理 m_nLastReadPacktTime = av_gettime(); m_pAVFmtCxt->interrupt_callback.opaque = this; m_pAVFmtCxt->interrupt_callback.callback = [](void* ctx) { ctFFmpeg* pThis = (ctFFmpeg*)ctx; int nTimeout = 3; if (av_gettime() - pThis->m_nLastReadPacktTime > nTimeout * 1000 * 1000) { return -1; } return 0; }; //打开码流 MY_DEBUG << "Open Stream."; int nRet; if(m_nPlayWay == MEDIA_PLAY_FILE) { nRet = avformat_open_input(&m_pAVFmtCxt, sUrl.toStdString().c_str(), nullptr, nullptr); if(m_pAVFmtCxt) { m_FileTotalTimes = m_pAVFmtCxt->duration/1000000.0;//获取总时长，转化为秒 MY_DEBUG << "m_FileTimes:" << m_FileTotalTimes; emit sig_showTotalTime(static_cast<int>(m_FileTotalTimes)); } } else nRet = avformat_open_input(&m_pAVFmtCxt, sUrl.toStdString().c_str(), nullptr, &pOptDict); if(nRet < 0) { MY_DEBUG << "avformat_open_input failed nRet:" << nRet; av_dict_free(&pOptDict); return nRet; } av_dict_free(&pOptDict); //设置探测时间，获取码流信息 MY_DEBUG << "Get Stream Info."; m_pAVFmtCxt->probesize = MAX_PROBE_SIZE; m_pAVFmtCxt->max_analyze_duration = MAX_ANALYZE_DURATION; nRet = avformat_find_stream_info(m_pAVFmtCxt, nullptr); if(nRet < 0) { MY_DEBUG << "avformat_find_stream_info failed nRet:" << nRet; return nRet; } //打印码流信息 av_dump_format(m_pAVFmtCxt, 0, sUrl.toStdString().c_str(), 0); //查找码流 MY_DEBUG << "av_find_best_stream."; m_nVideoIndex = av_find_best_stream(m_pAVFmtCxt, AVMEDIA_TYPE_VIDEO, -1, -1, &pvAVCodec, 0); m_nAudioIndex = av_find_best_stream(m_pAVFmtCxt, AVMEDIA_TYPE_AUDIO, -1, -1, NULL, 0); if(nullptr == pvAVCodec) { MY_DEBUG << "nullptr == pvAVCodec error."; return -1; } //初始化视频 MY_DEBUG << "Init Video."; if(InitVideo(pvAVCodec) < 0) { MY_DEBUG << "InitVideo() error"; return -1; } #if FILTER_ENABLE if(m_nPlayWay == MEDIA_PLAY_FILE) { m_bSupportFilter = InitOutFile(); if(!m_bSupportFilter) { MY_DEBUG << "InitOutFile() error."; } else MY_DEBUG << "InitOutFile() success."; } #endif //初始化音频 if(m_nAudioIndex >= 0) { if(InitAudio() < 0) { MY_DEBUG << "InitAudio() error"; m_bSupportAudioPlay = false; } else m_bSupportAudioPlay = true; } m_nShowWidgetW = 0; m_nShowWidgetH = 0; if(m_nDecodeType == MEDIA_DECODE_HARD) { if(m_bSupportHw) { if(nullptr != m_pHwDevCtx) av_buffer_unref(&m_pHwDevCtx); } } else { m_bSupportPush = initPushStream(); } MY_DEBUG << "ctFFmpeg::Init sUrl:" << sUrl << " success."; return 0; } void ctFFmpeg::DeInit() { MY_DEBUG << "DeInit 000"; m_mutex.lock(); m_bQuit = true; MY_DEBUG << "DeInit 111"; if(m_pSwsContext) sws_freeContext(m_pSwsContext); MY_DEBUG << "DeInit 222"; if (nullptr != m_pVideoSwsContext) { sws_freeContext(m_pVideoSwsContext); } MY_DEBUG << "DeInit 444"; if (nullptr != m_pAudioSwrContext) { swr_free(&m_pAudioSwrContext); m_pAudioSwrContext = nullptr; } MY_DEBUG << "DeInit 555"; if (m_pDstVideoFrame) av_frame_free(&m_pDstVideoFrame); MY_DEBUG << "DeInit 666"; if(nullptr != m_pYuvFrame) av_free(m_pYuvFrame); MY_DEBUG << "DeInit 777"; if(nullptr != m_pPcmFrame) av_free(m_pPcmFrame); MY_DEBUG << "DeInit 888"; if(nullptr != m_pFilterFrame) av_free(m_pFilterFrame); MY_DEBUG << "DeInit 999"; if(nullptr != m_pFrameRGB) av_free(m_pFrameRGB); MY_DEBUG << "DeInit aaa"; if(nullptr != m_pOutBuffer) { av_free(m_pOutBuffer); } if(nullptr != m_pHwFrame) { av_free(m_pHwFrame); } MY_DEBUG << "DeInit bbb"; if(m_nDecodeType == MEDIA_DECODE_HARD) { if(m_bSupportHw) { if(nullptr != m_pVideoCodecCxt) { avcodec_free_context(&m_pVideoCodecCxt); m_pVideoCodecCxt = nullptr; } } else { if(nullptr != m_pVideoCodecCxt) { avcodec_close(m_pVideoCodecCxt); m_pVideoCodecCxt = nullptr; } } }