Method allocate_avframe

src/FFmpegWriter.cpp:2035–2060

Allocate an AVFrame object

// Allocate an AVFrame object
AVFrame *FFmpegWriter::allocate_avframe(PixelFormat pix_fmt, int width, int height, int *buffer_size, uint8_t *new_buffer) {
	// Create an RGB AVFrame
	AVFrame *new_av_frame = NULL;

	// Allocate an AVFrame structure
	new_av_frame = AV_ALLOCATE_FRAME();
	if (new_av_frame == NULL)
		throw OutOfMemory("Could not allocate AVFrame", path);

	// Determine required buffer size and allocate buffer
	*buffer_size = AV_GET_IMAGE_SIZE(pix_fmt, width, height);

	// Create buffer (if not provided)
	if (!new_buffer) {
		// New Buffer
		new_buffer = (uint8_t *) av_malloc(*buffer_size * sizeof(uint8_t));
		// Attach buffer to AVFrame
		AV_COPY_PICTURE_DATA(new_av_frame, new_buffer, pix_fmt, width, height);
		new_av_frame->width = width;
		new_av_frame->height = height;
		new_av_frame->format = pix_fmt;
	}

	// return AVFrame
	return new_av_frame;
}

// process video frame
void FFmpegWriter::process_video_packet(std::shared_ptr<Frame> frame) {