[FFmpeg-trac] #7599(avcodec:new): Add monochrome/gray pixel format to libaom-av1

[FFmpeg]

#7599: Add monochrome/gray pixel format to libaom-av1
-------------------------------------+-----------------------------------
             Reporter:  Ewout        |                    Owner:
                 Type:  enhancement  |                   Status:  new
             Priority:  wish         |                Component:  avcodec
              Version:  git-master   |               Resolution:
             Keywords:  libaom       |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-----------------------------------
Changes (by cehoyos):

 * priority:  normal => wish
 * version:  unspecified => git-master
 * component:  undetermined => avcodec


Comment:

 Please test this patch:
 {{{
 diff --git a/libavcodec/libaomenc.c b/libavcodec/libaomenc.c
 index 1756501..e8dde36 100644
 --- a/libavcodec/libaomenc.c
 +++ b/libavcodec/libaomenc.c
 @@ -231,6 +231,8 @@ static int set_pix_fmt(AVCodecContext *avctx,
 aom_codec_caps_t codec_caps,
      AOMContext av_unused *ctx = avctx->priv_data;
      enccfg->g_bit_depth = enccfg->g_input_bit_depth = 8;
      switch (avctx->pix_fmt) {
 +    case AV_PIX_FMT_GRAY8:
 +        ctx->rawimg.monochrome = 1;
      case AV_PIX_FMT_YUV420P:
          enccfg->g_profile = FF_PROFILE_AV1_MAIN;
          *img_fmt = AOM_IMG_FMT_I420;
 @@ -243,11 +245,14 @@ static int set_pix_fmt(AVCodecContext *avctx,
 aom_codec_caps_t codec_caps,
          enccfg->g_profile = FF_PROFILE_AV1_HIGH;
          *img_fmt = AOM_IMG_FMT_I444;
          return 0;
 +    case AV_PIX_FMT_GRAY10:
 +    case AV_PIX_FMT_GRAY12:
 +        ctx->rawimg.monochrome = 1;
      case AV_PIX_FMT_YUV420P10:
      case AV_PIX_FMT_YUV420P12:
          if (codec_caps & AOM_CODEC_CAP_HIGHBITDEPTH) {
              enccfg->g_bit_depth = enccfg->g_input_bit_depth =
 -                avctx->pix_fmt == AV_PIX_FMT_YUV420P10 ? 10 : 12;
 +                avctx->pix_fmt == AV_PIX_FMT_YUV420P10 || avctx->pix_fmt
 == AV_PIX_FMT_GRAY10 ? 10 : 12;
              enccfg->g_profile =
                  enccfg->g_bit_depth == 10 ? FF_PROFILE_AV1_MAIN :
 FF_PROFILE_AV1_PROFESSIONAL;
              *img_fmt = AOM_IMG_FMT_I42016;
 @@ -937,6 +942,7 @@ static const enum AVPixelFormat av1_pix_fmts[] = {
      AV_PIX_FMT_YUV420P,
      AV_PIX_FMT_YUV422P,
      AV_PIX_FMT_YUV444P,
 +    AV_PIX_FMT_GRAY8,
      AV_PIX_FMT_NONE
  };

 @@ -944,12 +950,15 @@ static const enum AVPixelFormat
 av1_pix_fmts_highbd[] = {
      AV_PIX_FMT_YUV420P,
      AV_PIX_FMT_YUV422P,
      AV_PIX_FMT_YUV444P,
 +    AV_PIX_FMT_GRAY8,
      AV_PIX_FMT_YUV420P10,
      AV_PIX_FMT_YUV422P10,
      AV_PIX_FMT_YUV444P10,
 +    AV_PIX_FMT_GRAY10,
      AV_PIX_FMT_YUV420P12,
      AV_PIX_FMT_YUV422P12,
      AV_PIX_FMT_YUV444P12,
 +    AV_PIX_FMT_GRAY12,
      AV_PIX_FMT_NONE
  };

 }}}

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Ticket URL: <https://trac.ffmpeg.org/ticket/7599#comment:1>
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