[FFmpeg-devel] [PATCH v4 7/7] avcodec/nvenc: support for HEVC timecode passthrough

[lance.lmwang at gmail.com]

On Wed, Jun 24, 2020 at 09:43:20PM +0800, lance.lmwang at gmail.com wrote:
> From: Limin Wang <lance.lmwang at gmail.com>
> 
> Reviewed-by: Timo Rothenpieler <timo at rothenpieler.org>
> Signed-off-by: Limin Wang <lance.lmwang at gmail.com>
> ---
>  libavcodec/nvenc.c      | 17 +++++++++++++++++
>  libavcodec/nvenc.h      |  1 +
>  libavcodec/nvenc_hevc.c |  1 +
>  3 files changed, 19 insertions(+)
> 
> diff --git a/libavcodec/nvenc.c b/libavcodec/nvenc.c
> index 22c19f3..4efd532 100644
> --- a/libavcodec/nvenc.c
> +++ b/libavcodec/nvenc.c
> @@ -22,6 +22,7 @@
>  #include "config.h"
>  
>  #include "nvenc.h"
> +#include "hevc_sei.h"
>  
>  #include "libavutil/hwcontext_cuda.h"
>  #include "libavutil/hwcontext.h"
> @@ -2147,6 +2148,22 @@ static int nvenc_send_frame(AVCodecContext *avctx, const AVFrame *frame)
>              }
>          }
>  
> +        if (ctx->tc && av_frame_get_side_data(frame, AV_FRAME_DATA_S12M_TIMECODE)) {
> +            void *tc_data = NULL;
> +            size_t tc_size = 0;
> +
> +            if (ff_alloc_timecode_sei(frame, 0, (void**)&tc_data, &tc_size) < 0) {
> +                av_log(ctx, AV_LOG_ERROR, "Not enough memory for timecode sei, skipping\n");
> +            }
> +
> +            if (tc_data) {
> +                sei_data[sei_count].payloadSize = (uint32_t)tc_size;
> +                sei_data[sei_count].payloadType = HEVC_SEI_TYPE_TIME_CODE;
> +                sei_data[sei_count].payload = (uint8_t*)tc_data;
> +                sei_count ++;
> +            }
> +        }
> +
>          nvenc_codec_specific_pic_params(avctx, &pic_params, sei_data);
>      } else {
>          pic_params.encodePicFlags = NV_ENC_PIC_FLAG_EOS;
> diff --git a/libavcodec/nvenc.h b/libavcodec/nvenc.h
> index 007721a..b67abca 100644
> --- a/libavcodec/nvenc.h
> +++ b/libavcodec/nvenc.h
> @@ -196,6 +196,7 @@ typedef struct NvencContext
>      int coder;
>      int b_ref_mode;
>      int a53_cc;
> +    int tc;
>      int dpb_size;
>  } NvencContext;
>  
> diff --git a/libavcodec/nvenc_hevc.c b/libavcodec/nvenc_hevc.c
> index 434dc66..45dda3d 100644
> --- a/libavcodec/nvenc_hevc.c
> +++ b/libavcodec/nvenc_hevc.c
> @@ -129,6 +129,7 @@ static const AVOption options[] = {
>      { "each",         "",                                   0,                    AV_OPT_TYPE_CONST, { .i64 = 1 }, 0, 0,       VE, "b_ref_mode" },
>      { "middle",       "",                                   0,                    AV_OPT_TYPE_CONST, { .i64 = 2 }, 0, 0,       VE, "b_ref_mode" },
>  #endif
> +    { "tc",           "Use timecode (if available)",        OFFSET(tc),           AV_OPT_TYPE_BOOL,  { .i64 = 1 }, 0, 1,       VE },
>      { "dpb_size",     "Specifies the DPB size used for encoding (0 means automatic)",
>                                                              OFFSET(dpb_size),     AV_OPT_TYPE_INT,   { .i64 = 0 }, 0, INT_MAX, VE },
>      { NULL }
> -- 
> 1.8.3.1
> 

will apply the patchset(except #1 fate testing) tomorrow if no objections.


-- 
Thanks,
Limin Wang