[FFmpeg-devel] [PATCH] lavd/v4l2: add HEVC streams support

[Dmitry Buzdyk]

Reminder

On Thu, 2022-11-10 at 01:40 +0600, Dima Buzdyk wrote:
> Signed-off-by: Dima Buzdyk <dima.buzdyk at gmail.com>
> ---
>  libavcodec/hevc_parser.c  | 4 ++++
>  libavdevice/v4l2-common.c | 3 +++
>  libavdevice/v4l2.c        | 2 +-
>  3 files changed, 8 insertions(+), 1 deletion(-)
> 
> diff --git a/libavcodec/hevc_parser.c b/libavcodec/hevc_parser.c
> index 59f9a0ff3e..8f99a277a1 100644
> --- a/libavcodec/hevc_parser.c
> +++ b/libavcodec/hevc_parser.c
> @@ -330,6 +330,10 @@ static int hevc_parse(AVCodecParserContext *s,
> AVCodecContext *avctx,
>      if (!is_dummy_buf)
>          parse_nal_units(s, buf, buf_size, avctx);
>  
> +    if (s->flags & PARSER_FLAG_ONCE) {
> +        s->flags &= PARSER_FLAG_COMPLETE_FRAMES;
> +    }
> +
>      *poutbuf      = buf;
>      *poutbuf_size = buf_size;
>      return next;
> diff --git a/libavdevice/v4l2-common.c b/libavdevice/v4l2-common.c
> index b5b4448a31..353e83efdd 100644
> --- a/libavdevice/v4l2-common.c
> +++ b/libavdevice/v4l2-common.c
> @@ -55,6 +55,9 @@ const struct fmt_map ff_fmt_conversion_table[] = {
>  #ifdef V4L2_PIX_FMT_H264
>      { AV_PIX_FMT_NONE,    AV_CODEC_ID_H264,     V4L2_PIX_FMT_H264   
> },
>  #endif
> +#ifdef V4L2_PIX_FMT_HEVC
> +    { AV_PIX_FMT_NONE,    AV_CODEC_ID_HEVC,     V4L2_PIX_FMT_HEVC   
> },
> +#endif
>  #ifdef V4L2_PIX_FMT_MPEG4
>      { AV_PIX_FMT_NONE,    AV_CODEC_ID_MPEG4,    V4L2_PIX_FMT_MPEG4  
> },
>  #endif
> diff --git a/libavdevice/v4l2.c b/libavdevice/v4l2.c
> index 5e85d1a2b3..5558435827 100644
> --- a/libavdevice/v4l2.c
> +++ b/libavdevice/v4l2.c
> @@ -972,7 +972,7 @@ static int v4l2_read_header(AVFormatContext *ctx)
>      if (codec_id == AV_CODEC_ID_RAWVIDEO)
>          st->codecpar->codec_tag =
>              avcodec_pix_fmt_to_codec_tag(st->codecpar->format);
> -    else if (codec_id == AV_CODEC_ID_H264) {
> +    else if (codec_id == AV_CODEC_ID_H264 || codec_id ==
> AV_CODEC_ID_HEVC) {
>          avpriv_stream_set_need_parsing(st,
> AVSTREAM_PARSE_FULL_ONCE);
>      }
>      if (desired_format == V4L2_PIX_FMT_YVU420)