[FFmpeg-devel] [PATCH 1/1] pixdesc: add limited|full aliases for -color_range parameter

[Chema Gonzalez]

Ping :)

-Chema

On Fri, Mar 31, 2023 at 8:50 AM Chema Gonzalez <chemag at gmail.com> wrote:
>
> Aliases are also used in scale and zscale filters.
>
> Tested:
> ```
> $ ./ffmpeg -hide_banner -y -i ~/src/media/images/y4m/lena.490x490.y4m  -pix_fmt yuv420p -color_range unknown /tmp/unknown.y4m
> ...
> $ md5sum /tmp/unknown.y4m
> 69aa7bf52bbd72444268a544c81d7643  /tmp/unknown.y4m
>
> $ ./ffmpeg -hide_banner -y -i ~/src/media/images/y4m/lena.490x490.y4m  -pix_fmt yuv420p -color_range tv /tmp/tv.y4m
> ...
> $ md5sum /tmp/tv.y4m
> 5c1c8759708ff6b25dd8a660da5200e7  /tmp/tv.y4m
>
> $ ./ffmpeg -hide_banner -y -i ~/src/media/images/y4m/lena.490x490.y4m  -pix_fmt yuv420p -color_range pc /tmp/pc.y4m
> ...
> $ md5sum /tmp/pc.y4m
> 1ccb85d14a3dfecb22e625711587ba97  /tmp/pc.y4m
>
> $ ./ffmpeg -hide_banner -y -i ~/src/media/images/y4m/lena.490x490.y4m  -pix_fmt yuv420p -color_range limited /tmp/limited.y4m
> ...
> $ md5sum /tmp/limited.y4m
> 5c1c8759708ff6b25dd8a660da5200e7  /tmp/limited.y4m
>
> $ ./ffmpeg -hide_banner -y -i ~/src/media/images/y4m/lena.490x490.y4m  -pix_fmt yuv420p -color_range full /tmp/full.y4m
> ...
> $ md5sum /tmp/full.y4m
> 1ccb85d14a3dfecb22e625711587ba97  /tmp/full.y4m
> ```
>
> Also ran fate.
> ```
> $ make fate -j
> ...
> TEST    ffprobe_xsd
> TEST    flv-add_keyframe_index
> ```
> ---
>  doc/codecs.texi            | 2 ++
>  libavcodec/options_table.h | 2 ++
>  2 files changed, 4 insertions(+)
>
> diff --git a/doc/codecs.texi b/doc/codecs.texi
> index 1adacd2b59..bd04e134e1 100644
> --- a/doc/codecs.texi
> +++ b/doc/codecs.texi
> @@ -890,9 +890,11 @@ Possible values:
>  @table @samp
>  @item tv
>  @item mpeg
> + at item limited
>  MPEG (219*2^(n-8))
>  @item pc
>  @item jpeg
> + at item full
>  JPEG (2^n-1)
>  @end table
>
> diff --git a/libavcodec/options_table.h b/libavcodec/options_table.h
> index f331ce2861..979904daae 100644
> --- a/libavcodec/options_table.h
> +++ b/libavcodec/options_table.h
> @@ -346,6 +346,8 @@ static const AVOption avcodec_options[] = {
>  {"unspecified", "Unspecified", 0, AV_OPT_TYPE_CONST, {.i64 = AVCOL_RANGE_UNSPECIFIED }, INT_MIN, INT_MAX, V|E|D, "color_range_type"},
>  {"mpeg", "MPEG (219*2^(n-8))", 0, AV_OPT_TYPE_CONST, {.i64 = AVCOL_RANGE_MPEG },        INT_MIN, INT_MAX, V|E|D, "color_range_type"},
>  {"jpeg", "JPEG (2^n-1)",       0, AV_OPT_TYPE_CONST, {.i64 = AVCOL_RANGE_JPEG },        INT_MIN, INT_MAX, V|E|D, "color_range_type"},
> +{"limited", "MPEG (219*2^(n-8))", 0, AV_OPT_TYPE_CONST, {.i64 = AVCOL_RANGE_MPEG },     INT_MIN, INT_MAX, V|E|D, "color_range_type"},
> +{"full", "JPEG (2^n-1)",       0, AV_OPT_TYPE_CONST, {.i64 = AVCOL_RANGE_JPEG },        INT_MIN, INT_MAX, V|E|D, "color_range_type"},
>  {"chroma_sample_location", "chroma sample location", OFFSET(chroma_sample_location), AV_OPT_TYPE_INT, {.i64 = AVCHROMA_LOC_UNSPECIFIED }, 0, INT_MAX, V|E|D, "chroma_sample_location_type"},
>  {"unknown",     "Unspecified", 0, AV_OPT_TYPE_CONST, {.i64 = AVCHROMA_LOC_UNSPECIFIED }, INT_MIN, INT_MAX, V|E|D, "chroma_sample_location_type"},
>  {"left",        "Left",        0, AV_OPT_TYPE_CONST, {.i64 = AVCHROMA_LOC_LEFT },        INT_MIN, INT_MAX, V|E|D, "chroma_sample_location_type"},
> --
> 2.39.2
>