[FFmpeg-devel] [PATCH v6] avcodec/mpeg12enc: support mpeg2 encoder const profile

[mypopy at gmail.com]

On Sat, May 30, 2020 at 9:29 PM <lance.lmwang at gmail.com> wrote:
>
> From: Limin Wang <lance.lmwang at gmail.com>
>
> Signed-off-by: Limin Wang <lance.lmwang at gmail.com>
> ---
>  doc/encoders.texi      | 14 ++++++++++++++
>  libavcodec/mpeg12enc.c |  2 ++
>  libavcodec/profiles.h  |  8 ++++++++
>  3 files changed, 24 insertions(+)
>
> diff --git a/doc/encoders.texi b/doc/encoders.texi
> index 954f0f6..1331b79 100644
> --- a/doc/encoders.texi
> +++ b/doc/encoders.texi
> @@ -2740,6 +2740,20 @@ MPEG-2 video encoder.
>  @subsection Options
>
>  @table @option
> + at item profile @var{integer}
> +Select the mpeg2 profile to encode:
> +
> + at table @samp
> + at item 422
> + at item main
> + at item ss
> +Spatially Scalable
> + at item snr
> +SNR Scalable
> + at item high
> + at item simple
> + at end table
> +
>  @item seq_disp_ext @var{integer}
>  Specifies if the encoder should write a sequence_display_extension to the
>  output.
> diff --git a/libavcodec/mpeg12enc.c b/libavcodec/mpeg12enc.c
> index cab7076..9fbbcef 100644
> --- a/libavcodec/mpeg12enc.c
> +++ b/libavcodec/mpeg12enc.c
> @@ -41,6 +41,7 @@
>  #include "mpeg12data.h"
>  #include "mpegutils.h"
>  #include "mpegvideo.h"
> +#include "profiles.h"
>
>  static const uint8_t svcd_scan_offset_placeholder[] = {
>      0x10, 0x0E, 0x00, 0x80, 0x81, 0x00, 0x80,
> @@ -1167,6 +1168,7 @@ static const AVOption mpeg2_options[] = {
>      {     "mac",          NULL, 0, AV_OPT_TYPE_CONST,  {.i64 = VIDEO_FORMAT_MAC        },  0, 0, VE, "video_format" },
>      {     "unspecified",  NULL, 0, AV_OPT_TYPE_CONST,  {.i64 = VIDEO_FORMAT_UNSPECIFIED},  0, 0, VE, "video_format" },
>      FF_MPV_COMMON_OPTS
> +    FF_MPEG2_PROFILE_OPTS
>      { NULL },
>  };
>
> diff --git a/libavcodec/profiles.h b/libavcodec/profiles.h
> index e414ea7..d241925 100644
> --- a/libavcodec/profiles.h
> +++ b/libavcodec/profiles.h
> @@ -43,6 +43,14 @@
>      FF_AVCTX_PROFILE_OPTION("mpeg4_main",    NULL, VIDEO, FF_PROFILE_MPEG4_MAIN)\
>      FF_AVCTX_PROFILE_OPTION("mpeg4_asp",     NULL, VIDEO, FF_PROFILE_MPEG4_ADVANCED_SIMPLE)\
>
> +#define FF_MPEG2_PROFILE_OPTS \
> +    FF_AVCTX_PROFILE_OPTION("422",           NULL, VIDEO, FF_PROFILE_MPEG2_422)\
> +    FF_AVCTX_PROFILE_OPTION("high",          NULL, VIDEO, FF_PROFILE_MPEG2_HIGH)\
> +    FF_AVCTX_PROFILE_OPTION("ss",            NULL, VIDEO, FF_PROFILE_MPEG2_SS)\
> +    FF_AVCTX_PROFILE_OPTION("snr",           NULL, VIDEO, FF_PROFILE_MPEG2_SNR_SCALABLE)\
Same as the off-line discussion, is it mpeg2 encoder support
FF_PROFILE_MPEG2_SS and FF_PROFILE_MPEG2_SNR_SCALABLE profile ?

> +    FF_AVCTX_PROFILE_OPTION("main",          NULL, VIDEO, FF_PROFILE_MPEG2_MAIN)\
> +    FF_AVCTX_PROFILE_OPTION("simple",        NULL, VIDEO, FF_PROFILE_MPEG2_SIMPLE)\
> +
>  extern const AVProfile ff_aac_profiles[];
>  extern const AVProfile ff_dca_profiles[];
>  extern const AVProfile ff_dnxhd_profiles[];
> --
> 1.8.3.1