obs-studio/plugins/obs-ffmpeg/obs-ffmpeg-formats.h

#pragma once

static inline int64_t rescale_ts(int64_t val, AVCodecContext *context,
		AVRational new_base)
{
	return av_rescale_q_rnd(val, context->time_base, new_base,
			AV_ROUND_NEAR_INF | AV_ROUND_PASS_MINMAX);
}

static inline enum AVPixelFormat obs_to_ffmpeg_video_format(
		enum video_format format)
{
	switch (format) {
	case VIDEO_FORMAT_NONE: return AV_PIX_FMT_NONE;
	case VIDEO_FORMAT_I444: return AV_PIX_FMT_YUV444P;
	case VIDEO_FORMAT_I420: return AV_PIX_FMT_YUV420P;
	case VIDEO_FORMAT_NV12: return AV_PIX_FMT_NV12;
	case VIDEO_FORMAT_YVYU: return AV_PIX_FMT_NONE;
	case VIDEO_FORMAT_YUY2: return AV_PIX_FMT_YUYV422;
	case VIDEO_FORMAT_UYVY: return AV_PIX_FMT_UYVY422;
	case VIDEO_FORMAT_RGBA: return AV_PIX_FMT_RGBA;
	case VIDEO_FORMAT_BGRA: return AV_PIX_FMT_BGRA;
	case VIDEO_FORMAT_BGRX: return AV_PIX_FMT_BGRA;
	}

	return AV_PIX_FMT_NONE;
}

static inline enum video_format ffmpeg_to_obs_video_format(
		enum AVPixelFormat format)
{
	switch (format) {
	case AV_PIX_FMT_YUV444P: return VIDEO_FORMAT_I444;
	case AV_PIX_FMT_YUV420P: return VIDEO_FORMAT_I420;
	case AV_PIX_FMT_NV12:    return VIDEO_FORMAT_NV12;
	case AV_PIX_FMT_YUYV422: return VIDEO_FORMAT_YUY2;
	case AV_PIX_FMT_UYVY422: return VIDEO_FORMAT_UYVY;
	case AV_PIX_FMT_RGBA:    return VIDEO_FORMAT_RGBA;
	case AV_PIX_FMT_BGRA:    return VIDEO_FORMAT_BGRA;
	case AV_PIX_FMT_NONE:
	default:                 return VIDEO_FORMAT_NONE;
	}
}

static inline enum audio_format convert_ffmpeg_sample_format(
		enum AVSampleFormat format)
{
	switch ((uint32_t)format) {
	case AV_SAMPLE_FMT_U8:   return AUDIO_FORMAT_U8BIT;
	case AV_SAMPLE_FMT_S16:  return AUDIO_FORMAT_16BIT;
	case AV_SAMPLE_FMT_S32:  return AUDIO_FORMAT_32BIT;
	case AV_SAMPLE_FMT_FLT:  return AUDIO_FORMAT_FLOAT;
	case AV_SAMPLE_FMT_U8P:  return AUDIO_FORMAT_U8BIT_PLANAR;
	case AV_SAMPLE_FMT_S16P: return AUDIO_FORMAT_16BIT_PLANAR;
	case AV_SAMPLE_FMT_S32P: return AUDIO_FORMAT_32BIT_PLANAR;
	case AV_SAMPLE_FMT_FLTP: return AUDIO_FORMAT_FLOAT_PLANAR;
	}

	/* shouldn't get here */
	return AUDIO_FORMAT_16BIT;
}