136 lines
2.8 KiB
C
136 lines
2.8 KiB
C
#pragma once
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static const enum AVPixelFormat i420_formats[] = {
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AV_PIX_FMT_YUV420P,
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AV_PIX_FMT_NV12,
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AV_PIX_FMT_NV21,
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AV_PIX_FMT_YUYV422,
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AV_PIX_FMT_UYVY422,
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AV_PIX_FMT_YUV422P,
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AV_PIX_FMT_YUV444P,
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AV_PIX_FMT_NONE
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};
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static const enum AVPixelFormat nv12_formats[] = {
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AV_PIX_FMT_NV12,
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AV_PIX_FMT_NV21,
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AV_PIX_FMT_YUV420P,
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AV_PIX_FMT_YUYV422,
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AV_PIX_FMT_UYVY422,
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AV_PIX_FMT_YUV444P,
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AV_PIX_FMT_NONE
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};
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static const enum AVPixelFormat i444_formats[] = {
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AV_PIX_FMT_YUV444P,
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AV_PIX_FMT_RGBA,
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AV_PIX_FMT_BGRA,
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AV_PIX_FMT_YUYV422,
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AV_PIX_FMT_UYVY422,
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AV_PIX_FMT_NV12,
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AV_PIX_FMT_NV21,
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AV_PIX_FMT_NONE
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};
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static const enum AVPixelFormat yuy2_formats[] = {
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AV_PIX_FMT_YUYV422,
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AV_PIX_FMT_UYVY422,
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AV_PIX_FMT_NV12,
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AV_PIX_FMT_NV21,
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AV_PIX_FMT_YUV420P,
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AV_PIX_FMT_YUV444P,
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AV_PIX_FMT_NONE
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};
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static const enum AVPixelFormat uyvy_formats[] = {
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AV_PIX_FMT_UYVY422,
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AV_PIX_FMT_YUYV422,
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AV_PIX_FMT_NV12,
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AV_PIX_FMT_NV21,
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AV_PIX_FMT_YUV420P,
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AV_PIX_FMT_YUV444P,
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AV_PIX_FMT_NONE
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};
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static const enum AVPixelFormat rgba_formats[] = {
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AV_PIX_FMT_RGBA,
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AV_PIX_FMT_BGRA,
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AV_PIX_FMT_YUV444P,
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AV_PIX_FMT_YUYV422,
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AV_PIX_FMT_UYVY422,
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AV_PIX_FMT_NV12,
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AV_PIX_FMT_NV21,
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AV_PIX_FMT_NONE
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};
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static const enum AVPixelFormat bgra_formats[] = {
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AV_PIX_FMT_BGRA,
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AV_PIX_FMT_RGBA,
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AV_PIX_FMT_YUV444P,
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AV_PIX_FMT_YUYV422,
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AV_PIX_FMT_UYVY422,
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AV_PIX_FMT_NV12,
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AV_PIX_FMT_NV21,
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AV_PIX_FMT_NONE
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};
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static enum AVPixelFormat get_best_format(
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const enum AVPixelFormat *best,
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const enum AVPixelFormat *formats)
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{
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while (*best != AV_PIX_FMT_NONE) {
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enum AVPixelFormat best_format = *best;
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const enum AVPixelFormat *cur_formats = formats;
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while (*cur_formats != AV_PIX_FMT_NONE) {
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enum AVPixelFormat avail_format = *cur_formats;
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if (best_format == avail_format)
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return best_format;
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cur_formats++;
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}
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best++;
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}
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return AV_PIX_FMT_NONE;
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}
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static inline enum AVPixelFormat get_closest_format(
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enum AVPixelFormat format,
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const enum AVPixelFormat *formats)
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{
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enum AVPixelFormat best_format = AV_PIX_FMT_NONE;
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if (!formats || formats[0] == AV_PIX_FMT_NONE)
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return format;
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switch ((int)format) {
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case AV_PIX_FMT_YUV444P:
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best_format = get_best_format(i444_formats, formats);
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break;
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case AV_PIX_FMT_YUV420P:
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best_format = get_best_format(i420_formats, formats);
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break;
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case AV_PIX_FMT_NV12:
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best_format = get_best_format(nv12_formats, formats);
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break;
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case AV_PIX_FMT_YUYV422:
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best_format = get_best_format(yuy2_formats, formats);
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break;
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case AV_PIX_FMT_UYVY422:
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best_format = get_best_format(uyvy_formats, formats);
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break;
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case AV_PIX_FMT_RGBA:
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best_format = get_best_format(rgba_formats, formats);
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break;
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case AV_PIX_FMT_BGRA:
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best_format = get_best_format(bgra_formats, formats);
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break;
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}
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return (best_format == AV_PIX_FMT_NONE) ? formats[0] : best_format;
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}
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