int getFrameAt(int64_t timeUs, int width, int height)
{
int ret = -1;
AVFrame* pFrame = NULL;
ret = avformat_seek_file(m_pFormatContext, -1, INT16_MIN, timeUs, INT16_MAX, 0);
pFrame = av_frame_alloc();
m_pThumbFrame = av_frame_alloc();
ret = openDecoder();
if (ret != 0)
{
av_frame_free(&pFrame);
av_frame_free(&m_pThumbFrame);
return ret;
}
#ifdef DEBUG_SPEND_TIME
#ifdef _WIN32
DWORD start_time = timeGetTime();
#else
struct timeval start, end;
gettimeofday(&start, NULL);
#endif
#endif
ret = decodeOneFrame(pFrame);
if (ret < 0)
{
av_frame_free(&pFrame);
av_frame_free(&m_pThumbFrame);
return ret;
}
#ifdef DEBUG_SPEND_TIME
#ifdef _WIN32
DWORD end_time = timeGetTime();
printf("decodeOneFrame spend time = %d ms\n", end_time - start_time);
#else
gettimeofday(&end, NULL);
int spend_time = (end.tv_sec - start.tv_sec) * 1000 + (end.tv_usec - start.tv_usec) / 1000;
printf("spend_time = %d ms\n", spend_time);
#endif
#endif
ret = getThumbnail(pFrame, m_pThumbFrame, width, height);
if (ret < 0)
{
av_frame_free(&pFrame);
av_frame_free(&m_pThumbFrame);
return ret;
}
// save the rgb565
FILE *pFile = fopen(strThumbFileName, "ab");
if (pFile)
{
fwrite(m_pThumbFrame->data[0], 1, m_pThumbFrame->width * m_pThumbFrame->height * 2, pFile);
fclose(pFile);
}
av_frame_free(&pFrame);
av_frame_free(&m_pThumbFrame);
closeDecoder();
return ret;
}
bool SoundSourceM4A::reopenDecoder() {
closeDecoder();
return openDecoder();
}
CFfmpegDecode::~CFfmpegDecode()
{
closeDecoder();
av_lockmgr_register(NULL);
}
