avcodec/vdpau_hevc: Pass sps and pps range extension flags to VDPAU

Pass SPS, PPS range extensions to VDPAU layer via
VdpPictureInfoHEVC444. Added VdpPictureInfoHEVC444 struct to
VdpPictureInfo union to populate the range extension params. Mapped
FF_PROFILE_HEVC_REXT to VDP_DECODER_PROFILE_HEVC_MAIN_444.

libavcodec/vdpau_hevc.c

@@ -38,6 +38,9 @@ static int vdpau_hevc_start_frame(AVCodecContext *avctx,
     struct vdpau_picture_context *pic_ctx = pic->hwaccel_picture_private;
 
     VdpPictureInfoHEVC *info = &pic_ctx->info.hevc;
+#ifdef VDP_YCBCR_FORMAT_Y_U_V_444
+    VdpPictureInfoHEVC444 *info2 = &pic_ctx->info.hevc_444;
+#endif
 
     const HEVCSPS *sps = h->ps.sps;
     const HEVCPPS *pps = h->ps.pps;
@@ -355,6 +358,41 @@ static int vdpau_hevc_start_frame(AVCodecContext *avctx,
         }
     }
 
+#ifdef VDP_YCBCR_FORMAT_Y_U_V_444
+    if (sps->sps_range_extension_flag) {
+        info2->sps_range_extension_flag             = 1;
+        info2->transformSkipRotationEnableFlag      = sps->transform_skip_rotation_enabled_flag;
+        info2->transformSkipContextEnableFlag       = sps->transform_skip_context_enabled_flag;
+        info2->implicitRdpcmEnableFlag              = sps->implicit_rdpcm_enabled_flag;
+        info2->explicitRdpcmEnableFlag              = sps->explicit_rdpcm_enabled_flag;
+        info2->extendedPrecisionProcessingFlag      = sps->extended_precision_processing_flag;
+        info2->intraSmoothingDisabledFlag           = sps->intra_smoothing_disabled_flag;
+        info2->highPrecisionOffsetsEnableFlag       = sps->high_precision_offsets_enabled_flag;
+        info2->persistentRiceAdaptationEnableFlag   = sps->persistent_rice_adaptation_enabled_flag;
+        info2->cabacBypassAlignmentEnableFlag       = sps->cabac_bypass_alignment_enabled_flag;
+    } else {
+        info2->sps_range_extension_flag = 0;
+    }
+    if (pps->pps_range_extensions_flag) {
+        info2->pps_range_extension_flag             = 1;
+        info2->log2MaxTransformSkipSize             = pps->log2_max_transform_skip_block_size;
+        info2->crossComponentPredictionEnableFlag   = pps->cross_component_prediction_enabled_flag;
+        info2->chromaQpAdjustmentEnableFlag         = pps->chroma_qp_offset_list_enabled_flag;
+        info2->diffCuChromaQpAdjustmentDepth        = pps->diff_cu_chroma_qp_offset_depth;
+        info2->chromaQpAdjustmentTableSize          = pps->chroma_qp_offset_list_len_minus1 + 1;
+        info2->log2SaoOffsetScaleLuma               = pps->log2_sao_offset_scale_luma;
+        info2->log2SaoOffsetScaleChroma             = pps->log2_sao_offset_scale_chroma;
+        for (ssize_t i = 0; i < info2->chromaQpAdjustmentTableSize; i++)
+        {
+            info2->cb_qp_adjustment[i] = pps->cb_qp_offset_list[i];
+            info2->cr_qp_adjustment[i] = pps->cr_qp_offset_list[i];
+        }
+
+    } else {
+        info2->pps_range_extension_flag = 0;
+    }
+#endif
+
     return ff_vdpau_common_start_frame(pic_ctx, buffer, size);
 }
 
@@ -406,6 +444,9 @@ static int vdpau_hevc_init(AVCodecContext *avctx)
     case FF_PROFILE_HEVC_MAIN_STILL_PICTURE:
         profile = VDP_DECODER_PROFILE_HEVC_MAIN_STILL;
         break;
+    case FF_PROFILE_HEVC_REXT:
+        profile = VDP_DECODER_PROFILE_HEVC_MAIN_444;
+        break;
     default:
         return AVERROR(ENOTSUP);
     }

libavcodec/vdpau_internal.h

@@ -51,6 +51,9 @@ union VDPAUPictureInfo {
 #ifdef VDP_DECODER_PROFILE_HEVC_MAIN
     VdpPictureInfoHEVC        hevc;
 #endif
+#ifdef VDP_YCBCR_FORMAT_Y_U_V_444
+    VdpPictureInfoHEVC444     hevc_444;
+#endif
 };
 
 typedef struct VDPAUHWContext {