On 30/01/18 09:52, Zhong Li wrote:
> Currently key_frame and pict_type are unset.
> Add an extra param to fetch the picture type from qsv decoder
> 
> Signed-off-by: ChaoX A Liu <[email protected]>
> Signed-off-by: Zhong Li <[email protected]>
> ---
>  libavcodec/qsv.c          | 24 ++++++++++++++++++++++++
>  libavcodec/qsv_internal.h |  3 +++
>  libavcodec/qsvdec.c       |  7 +++++++
>  3 files changed, 34 insertions(+)
> 
> diff --git a/libavcodec/qsv.c b/libavcodec/qsv.c
> index e78633d..ffe7e6c 100644
> --- a/libavcodec/qsv.c
> +++ b/libavcodec/qsv.c
> @@ -195,6 +195,30 @@ int ff_qsv_find_surface_idx(QSVFramesContext *ctx, 
> QSVFrame *frame)
>      return AVERROR_BUG;
>  }
>  
> +enum AVPictureType ff_qsv_map_pictype(int mfx_pic_type)
> +{
> +    enum AVPictureType type;
> +    switch (mfx_pic_type & 0x7) {
> +        case MFX_FRAMETYPE_I:
> +            if (mfx_pic_type & MFX_FRAMETYPE_S)
> +                type = AV_PICTURE_TYPE_SI;
> +            else
> +                type = AV_PICTURE_TYPE_I;
> +            break;
> +        case MFX_FRAMETYPE_B:
> +            type = AV_PICTURE_TYPE_B;
> +            break;
> +        case MFX_FRAMETYPE_P:
> +             if (mfx_pic_type & MFX_FRAMETYPE_S)
> +                type = AV_PICTURE_TYPE_SP;
> +            else
> +                type = AV_PICTURE_TYPE_P;
> +            break;
> +    }
> +
> +    return type;
> +}
> +
>  static int qsv_load_plugins(mfxSession session, const char *load_plugins,
>                              void *logctx)
>  {
> diff --git a/libavcodec/qsv_internal.h b/libavcodec/qsv_internal.h
> index 975c8de..07ddc59 100644
> --- a/libavcodec/qsv_internal.h
> +++ b/libavcodec/qsv_internal.h
> @@ -48,6 +48,8 @@ typedef struct QSVMid {
>  typedef struct QSVFrame {
>      AVFrame *frame;
>      mfxFrameSurface1 surface;
> +    mfxExtDecodedFrameInfo dec_info;
> +    mfxExtBuffer *ext_param;
>  
>      int queued;
>      int used;
> @@ -83,6 +85,7 @@ int ff_qsv_codec_id_to_mfx(enum AVCodecID codec_id);
>  int ff_qsv_profile_to_mfx(enum AVCodecID codec_id, int profile);
>  
>  int ff_qsv_map_pixfmt(enum AVPixelFormat format, uint32_t *fourcc);
> +enum AVPictureType ff_qsv_map_pictype(int mfx_pic_type);
>  
>  int ff_qsv_init_internal_session(AVCodecContext *avctx, mfxSession *session,
>                                   const char *load_plugins);
> diff --git a/libavcodec/qsvdec.c b/libavcodec/qsvdec.c
> index f31172d..9ee4177 100644
> --- a/libavcodec/qsvdec.c
> +++ b/libavcodec/qsvdec.c
> @@ -232,6 +232,11 @@ static int alloc_frame(AVCodecContext *avctx, QSVContext 
> *q, QSVFrame *frame)
>  
>          frame->surface.Data.MemId = &q->frames_ctx.mids[ret];
>      }
> +    frame->surface.Data.ExtParam = &frame->ext_param;
> +    frame->surface.Data.NumExtParam = 1;
> +    frame->ext_param = (mfxExtBuffer*)&frame->dec_info;
> +    frame->dec_info.Header.BufferId = MFX_EXTBUFF_DECODED_FRAME_INFO;
> +    frame->dec_info.Header.BufferSz = sizeof(frame->dec_info);
>  
>      frame->used = 1;
>  
> @@ -416,6 +421,8 @@ FF_ENABLE_DEPRECATION_WARNINGS
>              outsurf->Info.PicStruct & MFX_PICSTRUCT_FIELD_TFF;
>          frame->interlaced_frame =
>              !(outsurf->Info.PicStruct & MFX_PICSTRUCT_PROGRESSIVE);
> +        frame->pict_type = ff_qsv_map_pictype(out_frame->dec_info.FrameType);
> +        frame->key_frame = !!(out_frame->dec_info.FrameType & 
> MFX_FRAMETYPE_IDR);
>  
>          /* update the surface properties */
>          if (avctx->pix_fmt == AV_PIX_FMT_QSV)
> 

Does this do the right thing for H.265?  (Can't test right now.)

I'm asking that because I know that frame types are still a problem for H.265 
encoding, because not all IRAPs are IDR - when CRA frames are generated they 
aren't marked as key.  The FrameType field (as used here) is not sufficient in 
that case, but I never sorted out exactly what does contain the necessary 
information.

- Mark
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