std::shared_ptr<AVPacket> alloc_packet()
{
const auto packet = std::shared_ptr<AVPacket>(av_packet_alloc(), [](AVPacket* ptr) { av_packet_free(&ptr); });
if (!packet)
FF_RET(AVERROR(ENOMEM), "av_packet_alloc");
return packet;
}
std::shared_ptr<AVFrame> poll()
{
if (fast_path())
{
if (fast_path_.empty())
return nullptr;
auto result = fast_path_.front();
fast_path_.pop();
return result;
}
auto filt_frame = ffmpeg::create_frame();
const auto ret = av_buffersink_get_frame(
video_graph_out_,
filt_frame.get());
if(ret == AVERROR_EOF || ret == AVERROR(EAGAIN))
return nullptr;
FF_RET(ret, "poll");
return filt_frame;
}
std::shared_ptr<AVFrame> alloc_frame()
{
const auto frame = std::shared_ptr<AVFrame>(av_frame_alloc(), [](AVFrame* ptr) { av_frame_free(&ptr); });
if (!frame)
FF_RET(AVERROR(ENOMEM), "av_frame_alloc");
return frame;
}
