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更新ffmpegdemo解码

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This commit is contained in:
feiyangqingyun
2020-09-07 14:03:32 +08:00
parent 2a80cb5392
commit 7b52f1bb68
1 changed files with 16 additions and 8 deletions
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20
ffmpegdemo/ffmpeg/ffmpeg.cpp
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@@ -231,8 +231,6 @@ bool FFmpegThread::init()
void FFmpegThread::run() void FFmpegThread::run()
{ {
//计时
QTime time;
while (!stopped) { while (!stopped) {
//根据标志位执行初始化操作 //根据标志位执行初始化操作
if (isPlay) { if (isPlay) {
@@ -241,16 +239,26 @@ void FFmpegThread::run()
continue; continue;
} }
time.restart();
if (av_read_frame(avFormatContext, avPacket) >= 0) { if (av_read_frame(avFormatContext, avPacket) >= 0) {
//判断当前包是视频还是音频 //判断当前包是视频还是音频
int packetSize = avPacket->size;
int index = avPacket->stream_index; int index = avPacket->stream_index;
if (index == videoStreamIndex) { if (index == videoStreamIndex) {
//解码视频流 //解码视频流 avcodec_decode_video2 方法已被废弃
#if 0
avcodec_decode_video2(videoCodec, avFrame2, &frameFinish, avPacket); avcodec_decode_video2(videoCodec, avFrame2, &frameFinish, avPacket);
#else
frameFinish = avcodec_send_packet(videoCodec, avPacket);
if (frameFinish < 0) {
continue;
}
if (frameFinish) { frameFinish = avcodec_receive_frame(videoCodec, avFrame2);
if (frameFinish < 0) {
continue;
}
#endif
if (frameFinish >= 0) {
//将数据转成一张图片 //将数据转成一张图片
sws_scale(swsContext, (const uint8_t *const *)avFrame2->data, avFrame2->linesize, 0, videoHeight, avFrame3->data, avFrame3->linesize); sws_scale(swsContext, (const uint8_t *const *)avFrame2->data, avFrame2->linesize, 0, videoHeight, avFrame3->data, avFrame3->linesize);