Re: [FFmpeg-devel] [PATCH 1/2] libavcodec/qsvdec: Add more pixel format support to qsvdec

["Xiang, Haihao" <haihao.xiang-at-intel.com@ffmpeg.org>]

On Wed, 2022-03-30 at 14:43 +0800, Wenbin Chen wrote:
> Qsv decoder only supports directly output nv12 and p010 to system
> memory. For other format, we need to download frame from qsv format
> to system memory. Now add other supported format to qsvdec.
> 
> Signed-off-by: Wenbin Chen <wenbin.chen@intel.com>
> ---
>  libavcodec/qsv.c          | 36 ++++++++++++++++++++++++++++++++++++
>  libavcodec/qsv_internal.h |  3 +++
>  libavcodec/qsvdec.c       | 23 +++++++++++++++++------
>  3 files changed, 56 insertions(+), 6 deletions(-)
> 
> diff --git a/libavcodec/qsv.c b/libavcodec/qsv.c
> index 67d0e3934a..8010eef172 100644
> --- a/libavcodec/qsv.c
> +++ b/libavcodec/qsv.c
> @@ -244,6 +244,42 @@ int ff_qsv_map_pixfmt(enum AVPixelFormat format, uint32_t
> *fourcc)
>      }
>  }
>  
> +int ff_qsv_map_frame_to_surface(const AVFrame *frame, mfxFrameSurface1
> *surface)
> +{
> +    switch (frame->format) {
> +    case AV_PIX_FMT_NV12:
> +    case AV_PIX_FMT_P010:
> +        surface->Data.Y  = frame->data[0];
> +        surface->Data.UV = frame->data[1];
> +        /* The SDK checks Data.V when using system memory for VP9 encoding */
> +        surface->Data.V  = surface->Data.UV + 1;
> +        break;
> +    case AV_PIX_FMT_X2RGB10LE:
> +    case AV_PIX_FMT_BGRA:
> +        surface->Data.B = frame->data[0];
> +        surface->Data.G = frame->data[0] + 1;
> +        surface->Data.R = frame->data[0] + 2;
> +        surface->Data.A = frame->data[0] + 3;
> +        break;
> +    case AV_PIX_FMT_YUYV422:
> +        surface->Data.Y = frame->data[0];
> +        surface->Data.U = frame->data[0] + 1;
> +        surface->Data.V = frame->data[0] + 3;
> +        break;
> +
> +    case AV_PIX_FMT_Y210:
> +        surface->Data.Y16 = (mfxU16 *)frame->data[0];
> +        surface->Data.U16 = (mfxU16 *)frame->data[0] + 1;
> +        surface->Data.V16 = (mfxU16 *)frame->data[0] + 3;
> +        break;
> +    default:
> +        return MFX_ERR_UNSUPPORTED;

Please change the return type to mfxStatus if you want to return a mfx error
code, otherwise return a ffmpeg error here. 

Thanks
Haihao


> +    }
> +    surface->Data.PitchLow  = frame->linesize[0];
> +
> +    return 0;
> +}
> +
>  int ff_qsv_find_surface_idx(QSVFramesContext *ctx, QSVFrame *frame)
>  {
>      int i;
> diff --git a/libavcodec/qsv_internal.h b/libavcodec/qsv_internal.h
> index 58186ea7ca..e2aecdcbd6 100644
> --- a/libavcodec/qsv_internal.h
> +++ b/libavcodec/qsv_internal.h
> @@ -147,4 +147,7 @@ int ff_qsv_find_surface_idx(QSVFramesContext *ctx,
> QSVFrame *frame);
>  void ff_qsv_frame_add_ext_param(AVCodecContext *avctx, QSVFrame *frame,
>                                  mfxExtBuffer *param);
>  
> +int ff_qsv_map_frame_to_surface(const AVFrame *frame, mfxFrameSurface1
> *surface);
> +
> +
>  #endif /* AVCODEC_QSV_INTERNAL_H */
> diff --git a/libavcodec/qsvdec.c b/libavcodec/qsvdec.c
> index 661f15bc75..f159e2690f 100644
> --- a/libavcodec/qsvdec.c
> +++ b/libavcodec/qsvdec.c
> @@ -132,21 +132,28 @@ static int qsv_get_continuous_buffer(AVCodecContext
> *avctx, AVFrame *frame,
>          frame->linesize[0] = FFALIGN(avctx->width, 128);
>          break;
>      case AV_PIX_FMT_P010:
> +    case AV_PIX_FMT_YUYV422:
>          frame->linesize[0] = 2 * FFALIGN(avctx->width, 128);
>          break;
> +    case AV_PIX_FMT_Y210:
> +        frame->linesize[0] = 4 * FFALIGN(avctx->width, 128);
> +        break;
>      default:
>          av_log(avctx, AV_LOG_ERROR, "Unsupported pixel format.\n");
>          return AVERROR(EINVAL);
>      }
>  
> -    frame->linesize[1] = frame->linesize[0];
>      frame->buf[0]      = av_buffer_pool_get(pool);
>      if (!frame->buf[0])
>          return AVERROR(ENOMEM);
>  
>      frame->data[0] = frame->buf[0]->data;
> -    frame->data[1] = frame->data[0] +
> -                            frame->linesize[0] * FFALIGN(avctx->height, 64);
> +    if (avctx->pix_fmt == AV_PIX_FMT_NV12 ||
> +        avctx->pix_fmt == AV_PIX_FMT_P010) {
> +        frame->linesize[1] = frame->linesize[0];
> +        frame->data[1] = frame->data[0] +
> +            frame->linesize[0] * FFALIGN(avctx->height, 64);
> +    }
>  
>      ret = ff_attach_decode_data(frame);
>      if (ret < 0)
> @@ -426,9 +433,11 @@ static int alloc_frame(AVCodecContext *avctx, QSVContext
> *q, QSVFrame *frame)
>      if (frame->frame->format == AV_PIX_FMT_QSV) {
>          frame->surface = *(mfxFrameSurface1*)frame->frame->data[3];
>      } else {
> -        frame->surface.Data.PitchLow = frame->frame->linesize[0];
> -        frame->surface.Data.Y        = frame->frame->data[0];
> -        frame->surface.Data.UV       = frame->frame->data[1];
> +        ret = ff_qsv_map_frame_to_surface(frame->frame, &frame->surface);
> +        if (ret < 0) {
> +            av_log(avctx, AV_LOG_ERROR, "map frame to surface failed.\n");
> +            return AVERROR(EINVAL);
> +        }
>      }
>  
>      frame->surface.Info = q->frame_info;
> @@ -993,6 +1002,8 @@ const FFCodec ff_##x##_qsv_decoder = { \
>      .p.priv_class   = &x##_qsv_class, \
>      .p.pix_fmts     = (const enum AVPixelFormat[]){ AV_PIX_FMT_NV12, \
>                                                      AV_PIX_FMT_P010, \
> +                                                    AV_PIX_FMT_YUYV422, \
> +                                                    AV_PIX_FMT_Y210, \
>                                                      AV_PIX_FMT_QSV, \
>                                                      AV_PIX_FMT_NONE }, \
>      .hw_configs     = qsv_hw_configs, \
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