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pixfmt: Add ARIB STD-B76 color transfer characteristic 

Adding hybrid log-gamma (https://en.wikipedia.org/wiki/Hybrid_Log-Gamma)
based on the standardization in ARIB STD-B67:
http://www.arib.or.jp/english/html/overview/doc/2-STD-B67v1_0.pdf

The choice of enum value of 18 is consistent with HEVC:
http://phenix.it-sudparis.eu/jct/doc_end_user/current_document.php?id=10481

And also with latest proposal for color format in mkv:
https://mailarchive.ietf.org/arch/search/?email_list=cellar&gbt=1&q=Colour+Format+proposal

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
This commit is contained in:
Neil Birkbeck 2016-06-15 14:25:00 -04:00 committed by Vittorio Giovara
parent 6ed0f70f97
commit 5d560d38de
5 changed files with 5 additions and 2 deletions
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1
libavcodec/options_table.h
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@ -453,6 +453,7 @@ static const AVOption avcodec_options[] = {
{"bt2020_12bit", "BT.2020 - 12 bit", 0, AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_BT2020_12 }, INT_MIN, INT_MAX, V|E|D, "color_trc_type"},
{"smptest2084", "SMPTE ST 2084", 0, AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_SMPTEST2084 }, INT_MIN, INT_MAX, V|E|D, "color_trc_type"},
{"smptest428_1", "SMPTE ST 428-1", 0, AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_SMPTEST428_1 }, INT_MIN, INT_MAX, V|E|D, "color_trc_type"},
{"arib-std-b67", "ARIB STD-B67", 0, AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_ARIB_STD_B67 }, INT_MIN, INT_MAX, V|E|D, "color_trc_type"},
{"colorspace", "color space", OFFSET(colorspace), AV_OPT_TYPE_INT, {.i64 = AVCOL_SPC_UNSPECIFIED }, 0, AVCOL_SPC_NB-1, V|E|D, "colorspace_type"},
{"rgb", "RGB", 0, AV_OPT_TYPE_CONST, {.i64 = AVCOL_SPC_RGB }, INT_MIN, INT_MAX, V|E|D, "colorspace_type"},
{"bt709", "BT.709", 0, AV_OPT_TYPE_CONST, {.i64 = AVCOL_SPC_BT709 }, INT_MIN, INT_MAX, V|E|D, "colorspace_type"},

2
libavcodec/version.h
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@ -29,7 +29,7 @@
#define LIBAVCODEC_VERSION_MAJOR 57
#define LIBAVCODEC_VERSION_MINOR 22
#define LIBAVCODEC_VERSION_MICRO 0
#define LIBAVCODEC_VERSION_MICRO 1
#define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
LIBAVCODEC_VERSION_MINOR, \

1
libavutil/pixdesc.c
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@ -1634,6 +1634,7 @@ static const char *color_transfer_names[] = {
[AVCOL_TRC_BT2020_12] = "bt2020-20",
[AVCOL_TRC_SMPTEST2084] = "smptest2084",
[AVCOL_TRC_SMPTEST428_1] = "smptest428-1",
[AVCOL_TRC_ARIB_STD_B67] = "arib-std-b67",
};
static const char *color_space_names[] = {

1
libavutil/pixfmt.h
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@ -324,6 +324,7 @@ enum AVColorTransferCharacteristic {
AVCOL_TRC_BT2020_12 = 15, ///< ITU-R BT2020 for 12-bit system
AVCOL_TRC_SMPTEST2084 = 16, ///< SMPTE ST 2084 for 10-, 12-, 14- and 16-bit systems
AVCOL_TRC_SMPTEST428_1 = 17, ///< SMPTE ST 428-1
AVCOL_TRC_ARIB_STD_B67 = 18, ///< ARIB STD-B67, known as "Hybrid log-gamma"
AVCOL_TRC_NB, ///< Not part of ABI
};

2
libavutil/version.h
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@ -54,7 +54,7 @@
*/
#define LIBAVUTIL_VERSION_MAJOR 55
#define LIBAVUTIL_VERSION_MINOR 13
#define LIBAVUTIL_VERSION_MINOR 14
#define LIBAVUTIL_VERSION_MICRO 0
#define LIBAVUTIL_VERSION_INT AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \