Method CreateFrame

src/FFmpegReader.cpp:2685–2708

Create a new Frame (or return an existing one) and add it to the working queue.

// Create a new Frame (or return an existing one) and add it to the working queue.
std::shared_ptr<Frame> FFmpegReader::CreateFrame(int64_t requested_frame) {
	// Check working cache
	std::shared_ptr<Frame> output = working_cache.GetFrame(requested_frame);

	if (!output) {
		// (re-)Check working cache
		output = working_cache.GetFrame(requested_frame);
		if(output) return output;

		// Create a new frame on the working cache
		output = std::make_shared<Frame>(requested_frame, info.width, info.height, "#000000", Frame::GetSamplesPerFrame(requested_frame, info.fps, info.sample_rate, info.channels), info.channels);
		output->SetPixelRatio(info.pixel_ratio.num, info.pixel_ratio.den); // update pixel ratio
		output->ChannelsLayout(info.channel_layout); // update audio channel layout from the parent reader
		output->SampleRate(info.sample_rate); // update the frame's sample rate of the parent reader

		working_cache.Add(output);

		// Set the largest processed frame (if this is larger)
		if (requested_frame > largest_frame_processed)
			largest_frame_processed = requested_frame;
	}
	// Return frame
	return output;
}

// Determine if frame is partial due to seek
bool FFmpegReader::IsPartialFrame(int64_t requested_frame) {