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fftools/ffplay: constrain supported YUV color spaces

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SDL supports only these three matrices. Actually, it only supports these
three combinations: BT.601+JPEG, BT.601+MPEG, BT.709+MPEG, but we have
no way to restrict the specific *combination* of YUV range and YUV
colorspace with the current filter design.

See-Also: https://trac.ffmpeg.org/ticket/10839

Instead of an incorrect conversion result, trying to play a YCgCo file
with ffplay will simply error out with a "No conversion possible" error.
This commit is contained in:
Niklas Haas 2024-02-05 19:28:04 +01:00
parent 75f4cb81de
commit c619d20906
1 changed files with 9 additions and 0 deletions
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9
fftools/ffplay.c
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@ -940,6 +940,13 @@ static int upload_texture(SDL_Texture **tex, AVFrame *frame)
return ret;
}
static enum AVColorSpace sdl_supported_color_spaces[] = {
AVCOL_SPC_BT709,
AVCOL_SPC_BT470BG,
AVCOL_SPC_SMPTE170M,
AVCOL_SPC_UNSPECIFIED,
};
static void set_sdl_yuv_conversion_mode(AVFrame *frame)
{
#if SDL_VERSION_ATLEAST(2,0,8)
@ -1921,6 +1928,8 @@ static int configure_video_filters(AVFilterGraph *graph, VideoState *is, const c
if ((ret = av_opt_set_int_list(filt_out, "pix_fmts", pix_fmts, AV_PIX_FMT_NONE, AV_OPT_SEARCH_CHILDREN)) < 0)
goto fail;
if ((ret = av_opt_set_int_list(filt_out, "color_spaces", sdl_supported_color_spaces, AVCOL_SPC_UNSPECIFIED, AV_OPT_SEARCH_CHILDREN)) < 0)
goto fail;
last_filter = filt_out;