avcodec: add D3D12VA hardware accelerated VC1 decoding

The command below is how to enable d3d12va:
ffmpeg -hwaccel d3d12va -i input.mp4 output.mp4

Signed-off-by: Wu Jianhua <toqsxw@outlook.com>
Signed-off-by: Tong Wu <tong1.wu@intel.com>

7 files changed, 241 insertions, 7 deletions

diff --git a/configure b/configure
index e7fd43c9a4..00495efb1c 100755
--- a/configure
+++ b/configure
@@ -3158,6 +3158,8 @@ vc1_d3d11va_hwaccel_deps="d3d11va"
 vc1_d3d11va_hwaccel_select="vc1_decoder"
 vc1_d3d11va2_hwaccel_deps="d3d11va"
 vc1_d3d11va2_hwaccel_select="vc1_decoder"
+vc1_d3d12va_hwaccel_deps="d3d12va"
+vc1_d3d12va_hwaccel_select="vc1_decoder"
 vc1_dxva2_hwaccel_deps="dxva2"
 vc1_dxva2_hwaccel_select="vc1_decoder"
 vc1_nvdec_hwaccel_deps="nvdec"
@@ -3188,6 +3190,7 @@ vp9_videotoolbox_hwaccel_deps="videotoolbox"
 vp9_videotoolbox_hwaccel_select="vp9_decoder"
 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
+wmv3_d3d12va_hwaccel_select="vc1_d3d12va_hwaccel"
 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
diff --git a/libavcodec/Makefile b/libavcodec/Makefile
index 889f844031..5dd5ea68a6 100644
--- a/libavcodec/Makefile
+++ b/libavcodec/Makefile
@@ -1039,6 +1039,7 @@ OBJS-$(CONFIG_MPEG4_VDPAU_HWACCEL)        += vdpau_mpeg4.o
 OBJS-$(CONFIG_MPEG4_VIDEOTOOLBOX_HWACCEL) += videotoolbox.o
 OBJS-$(CONFIG_VC1_D3D11VA_HWACCEL)        += dxva2_vc1.o
 OBJS-$(CONFIG_VC1_DXVA2_HWACCEL)          += dxva2_vc1.o
+OBJS-$(CONFIG_VC1_D3D12VA_HWACCEL)        += dxva2_vc1.o d3d12va_vc1.o
 OBJS-$(CONFIG_VC1_NVDEC_HWACCEL)          += nvdec_vc1.o
 OBJS-$(CONFIG_VC1_QSV_HWACCEL)            += qsvdec.o
 OBJS-$(CONFIG_VC1_VAAPI_HWACCEL)          += vaapi_vc1.o
diff --git a/libavcodec/d3d12va_vc1.c b/libavcodec/d3d12va_vc1.c
new file mode 100644
index 0000000000..3d15abd1f1
--- /dev/null
+++ b/libavcodec/d3d12va_vc1.c
@@ -0,0 +1,214 @@
+/*
+ * Direct3D12 WMV3/VC-1 HW acceleration
+ *
+ * copyright (c) 2022-2023 Wu Jianhua <toqsxw@outlook.com>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "config_components.h"
+#include "libavutil/avassert.h"
+#include "libavutil/hwcontext_d3d12va_internal.h"
+#include "mpegutils.h"
+#include "mpegvideodec.h"
+#include "vc1.h"
+#include "vc1data.h"
+#include "d3d12va_decode.h"
+#include "dxva2_internal.h"
+
+#define MAX_SLICES  1024
+#define INVALID_REF 0xffff
+
+#define REF_RESOURCE(index) if (index != INVALID_REF) { \
+    ctx->ref_resources[index] = frames_hwctx->texture_infos[index].texture; \
+}
+
+typedef struct D3D12DecodePictureContext {
+    DXVA_PictureParameters pp;
+    unsigned               slice_count;
+    DXVA_SliceInfo         slices[MAX_SLICES];
+    const uint8_t         *bitstream;
+    unsigned               bitstream_size;
+} D3D12DecodePictureContext;
+
+static int d3d12va_vc1_start_frame(AVCodecContext *avctx, av_unused const uint8_t *buffer,  av_unused uint32_t size)
+{
+    const VC1Context          *v       = avctx->priv_data;
+    D3D12VADecodeContext      *ctx     = D3D12VA_DECODE_CONTEXT(avctx);
+    D3D12DecodePictureContext *ctx_pic = v->s.current_picture_ptr->hwaccel_picture_private;
+
+    if (!ctx)
+        return -1;
+
+    av_assert0(ctx_pic);
+
+    ctx->used_mask = 0;
+
+    ff_dxva2_vc1_fill_picture_parameters(avctx, (AVDXVAContext *)ctx, &ctx_pic->pp);
+    ctx_pic->pp.wDeblockedPictureIndex = INVALID_REF;
+
+    ctx_pic->bitstream      = NULL;
+    ctx_pic->bitstream_size = 0;
+    ctx_pic->slice_count    = 0;
+
+    return 0;
+}
+
+static int d3d12va_vc1_decode_slice(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size)
+{
+    const VC1Context          *v       = avctx->priv_data;
+    D3D12DecodePictureContext *ctx_pic = v->s.current_picture_ptr->hwaccel_picture_private;
+
+    if (ctx_pic->slice_count >= MAX_SLICES) {
+        return AVERROR(ERANGE);
+    }
+
+    if (avctx->codec_id == AV_CODEC_ID_VC1 &&
+        size >= 4 && IS_MARKER(AV_RB32(buffer))) {
+        buffer += 4;
+        size -= 4;
+    }
+
+    if (!ctx_pic->bitstream)
+        ctx_pic->bitstream = buffer;
+    ctx_pic->bitstream_size += size;
+
+    ff_dxva2_vc1_fill_slice(avctx, &ctx_pic->slices[ctx_pic->slice_count++],
+                            buffer - ctx_pic->bitstream, size);
+
+    return 0;
+}
+
+static int update_input_arguments(AVCodecContext *avctx, D3D12_VIDEO_DECODE_INPUT_STREAM_ARGUMENTS *input_args, ID3D12Resource *buffer)
+{
+    D3D12VADecodeContext      *ctx          = D3D12VA_DECODE_CONTEXT(avctx);
+    AVHWFramesContext         *frames_ctx   = D3D12VA_FRAMES_CONTEXT(avctx);
+    AVD3D12VAFramesContext    *frames_hwctx = frames_ctx->hwctx;
+    const VC1Context *v                     = avctx->priv_data;
+    const MpegEncContext      *s            = &v->s;
+    D3D12DecodePictureContext *ctx_pic      = s->current_picture_ptr->hwaccel_picture_private;
+    D3D12_VIDEO_DECODE_FRAME_ARGUMENT *args = &input_args->FrameArguments[input_args->NumFrameArguments++];
+
+    const unsigned mb_count = s->mb_width * (s->mb_height >> v->field_mode);
+    uint8_t *mapped_data, *mapped_ptr;
+
+    static const uint8_t start_code[] = { 0, 0, 1, 0x0d };
+
+    if (FAILED(ID3D12Resource_Map(buffer, 0, NULL, &mapped_data))) {
+        av_log(avctx, AV_LOG_ERROR, "Failed to map D3D12 Buffer resource!\n");
+        return AVERROR(EINVAL);
+    }
+
+    mapped_ptr = mapped_data;
+    for (int i = 0; i < ctx_pic->slice_count; i++) {
+        DXVA_SliceInfo *slice = &ctx_pic->slices[i];
+        unsigned position     = slice->dwSliceDataLocation;
+        unsigned size         = slice->dwSliceBitsInBuffer / 8;
+
+        slice->dwSliceDataLocation = mapped_ptr - mapped_data;
+        if (i < ctx_pic->slice_count - 1)
+            slice->wNumberMBsInSlice = slice[1].wNumberMBsInSlice - slice[0].wNumberMBsInSlice;
+        else
+            slice->wNumberMBsInSlice = mb_count - slice[0].wNumberMBsInSlice;
+
+        if (avctx->codec_id == AV_CODEC_ID_VC1) {
+            memcpy(mapped_ptr, start_code, sizeof(start_code));
+            if (i == 0 && v->second_field)
+                mapped_ptr[3] = 0x0c;
+            else if (i > 0)
+                mapped_ptr[3] = 0x0b;
+
+            mapped_ptr += sizeof(start_code);
+            slice->dwSliceBitsInBuffer += sizeof(start_code) * 8;
+        }
+
+        memcpy(mapped_ptr, &ctx_pic->bitstream[position], size);
+        mapped_ptr += size;
+    }
+
+    ID3D12Resource_Unmap(buffer, 0, NULL);
+
+    args->Type  = D3D12_VIDEO_DECODE_ARGUMENT_TYPE_SLICE_CONTROL;
+    args->Size  = sizeof(DXVA_SliceInfo) * ctx_pic->slice_count;
+    args->pData = ctx_pic->slices;
+
+    input_args->CompressedBitstream = (D3D12_VIDEO_DECODE_COMPRESSED_BITSTREAM){
+        .pBuffer = buffer,
+        .Offset  = 0,
+        .Size    = mapped_ptr - mapped_data,
+    };
+
+    return 0;
+}
+
+static int d3d12va_vc1_end_frame(AVCodecContext *avctx)
+{
+    const VC1Context          *v       = avctx->priv_data;
+    D3D12DecodePictureContext *ctx_pic = v->s.current_picture_ptr->hwaccel_picture_private;
+
+    if (ctx_pic->slice_count <= 0 || ctx_pic->bitstream_size <= 0)
+        return -1;
+
+    return ff_d3d12va_common_end_frame(avctx, v->s.current_picture_ptr->f,
+                                       &ctx_pic->pp, sizeof(ctx_pic->pp),
+                                       NULL, 0,
+                                       update_input_arguments);
+}
+
+static int d3d12va_vc1_decode_init(AVCodecContext *avctx)
+{
+    D3D12VADecodeContext *ctx = D3D12VA_DECODE_CONTEXT(avctx);
+    ctx->cfg.DecodeProfile = D3D12_VIDEO_DECODE_PROFILE_VC1;
+
+    ctx->max_num_ref = 3;
+
+    return ff_d3d12va_decode_init(avctx);
+}
+
+#if CONFIG_WMV3_D3D12VA_HWACCEL
+const FFHWAccel ff_wmv3_d3d12va_hwaccel = {
+    .p.name               = "wmv3_d3d12va",
+    .p.type               = AVMEDIA_TYPE_VIDEO,
+    .p.id                 = AV_CODEC_ID_WMV3,
+    .p.pix_fmt            = AV_PIX_FMT_D3D12,
+    .init                 = d3d12va_vc1_decode_init,
+    .uninit               = ff_d3d12va_decode_uninit,
+    .start_frame          = d3d12va_vc1_start_frame,
+    .decode_slice         = d3d12va_vc1_decode_slice,
+    .end_frame            = d3d12va_vc1_end_frame,
+    .frame_params         = ff_d3d12va_common_frame_params,
+    .frame_priv_data_size = sizeof(D3D12DecodePictureContext),
+    .priv_data_size       = sizeof(D3D12VADecodeContext),
+};
+#endif
+
+#if CONFIG_VC1_D3D12VA_HWACCEL
+const FFHWAccel ff_vc1_d3d12va_hwaccel = {
+    .p.name               = "vc1_d3d12va",
+    .p.type               = AVMEDIA_TYPE_VIDEO,
+    .p.id                 = AV_CODEC_ID_VC1,
+    .p.pix_fmt            = AV_PIX_FMT_D3D12,
+    .init                 = d3d12va_vc1_decode_init,
+    .uninit               = ff_d3d12va_decode_uninit,
+    .start_frame          = d3d12va_vc1_start_frame,
+    .decode_slice         = d3d12va_vc1_decode_slice,
+    .end_frame            = d3d12va_vc1_end_frame,
+    .frame_params         = ff_d3d12va_common_frame_params,
+    .frame_priv_data_size = sizeof(D3D12DecodePictureContext),
+    .priv_data_size       = sizeof(D3D12VADecodeContext),
+};
+#endif
diff --git a/libavcodec/dxva2_internal.h b/libavcodec/dxva2_internal.h
index 46a359aec6..224a867ebc 100644
--- a/libavcodec/dxva2_internal.h
+++ b/libavcodec/dxva2_internal.h
@@ -187,4 +187,8 @@ void ff_dxva2_mpeg2_fill_quantization_matrices(AVCodecContext *avctx, AVDXVACont
 
 void ff_dxva2_mpeg2_fill_slice(AVCodecContext *avctx, DXVA_SliceInfo *slice,  unsigned position, const uint8_t *buffer, unsigned size);
 
+void ff_dxva2_vc1_fill_picture_parameters(AVCodecContext *avctx, AVDXVAContext *ctx, DXVA_PictureParameters *pp);
+
+void ff_dxva2_vc1_fill_slice(AVCodecContext *avctx, DXVA_SliceInfo *slice, unsigned position, unsigned size);
+
 #endif /* AVCODEC_DXVA2_INTERNAL_H */
diff --git a/libavcodec/dxva2_vc1.c b/libavcodec/dxva2_vc1.c
index 8ee23feabf..2b1b3f97ea 100644
--- a/libavcodec/dxva2_vc1.c
+++ b/libavcodec/dxva2_vc1.c
@@ -40,10 +40,11 @@ struct dxva2_picture_context {
     unsigned               bitstream_size;
 };
 
-static void fill_picture_parameters(AVCodecContext *avctx,
-                                    AVDXVAContext *ctx, const VC1Context *v,
+void ff_dxva2_vc1_fill_picture_parameters(AVCodecContext *avctx,
+                                    AVDXVAContext *ctx,
                                     DXVA_PictureParameters *pp)
 {
+    const VC1Context *v = avctx->priv_data;
     const MpegEncContext *s = &v->s;
     const Picture *current_picture = s->current_picture_ptr;
     int intcomp = 0;
@@ -57,8 +58,6 @@ static void fill_picture_parameters(AVCodecContext *avctx,
     }
 
     memset(pp, 0, sizeof(*pp));
-    pp->wDecodedPictureIndex    =
-    pp->wDeblockedPictureIndex  = ff_dxva2_get_surface_index(avctx, ctx, current_picture->f, 1);
     if (s->pict_type != AV_PICTURE_TYPE_I && !v->bi_type)
         pp->wForwardRefPictureIndex = ff_dxva2_get_surface_index(avctx, ctx, s->last_picture.f, 0);
     else
@@ -67,6 +66,8 @@ static void fill_picture_parameters(AVCodecContext *avctx,
         pp->wBackwardRefPictureIndex = ff_dxva2_get_surface_index(avctx, ctx, s->next_picture.f, 0);
     else
         pp->wBackwardRefPictureIndex = 0xffff;
+    pp->wDecodedPictureIndex    =
+    pp->wDeblockedPictureIndex  = ff_dxva2_get_surface_index(avctx, ctx, current_picture->f, 1);
     if (v->profile == PROFILE_ADVANCED) {
         /* It is the cropped width/height -1 of the frame */
         pp->wPicWidthInMBminus1 = avctx->width  - 1;
@@ -163,7 +164,7 @@ static void fill_picture_parameters(AVCodecContext *avctx,
     pp->bBitstreamConcealmentMethod = 0;
 }
 
-static void fill_slice(AVCodecContext *avctx, DXVA_SliceInfo *slice,
+void ff_dxva2_vc1_fill_slice(AVCodecContext *avctx, DXVA_SliceInfo *slice,
                        unsigned position, unsigned size)
 {
     const VC1Context *v = avctx->priv_data;
@@ -322,7 +323,7 @@ static int dxva2_vc1_start_frame(AVCodecContext *avctx,
         return -1;
     assert(ctx_pic);
 
-    fill_picture_parameters(avctx, ctx, v, &ctx_pic->pp);
+    ff_dxva2_vc1_fill_picture_parameters(avctx, ctx, &ctx_pic->pp);
 
     ctx_pic->slice_count    = 0;
     ctx_pic->bitstream_size = 0;
@@ -356,7 +357,7 @@ static int dxva2_vc1_decode_slice(AVCodecContext *avctx,
     ctx_pic->bitstream_size += size;
 
     position = buffer - ctx_pic->bitstream;
-    fill_slice(avctx, &ctx_pic->slice[ctx_pic->slice_count++], position, size);
+    ff_dxva2_vc1_fill_slice(avctx, &ctx_pic->slice[ctx_pic->slice_count++], position, size);
     return 0;
 }
 
diff --git a/libavcodec/hwaccels.h b/libavcodec/hwaccels.h
index 927314c5e3..5171e4c7d7 100644
--- a/libavcodec/hwaccels.h
+++ b/libavcodec/hwaccels.h
@@ -67,6 +67,7 @@ extern const struct FFHWAccel ff_mpeg4_videotoolbox_hwaccel;
 extern const struct FFHWAccel ff_prores_videotoolbox_hwaccel;
 extern const struct FFHWAccel ff_vc1_d3d11va_hwaccel;
 extern const struct FFHWAccel ff_vc1_d3d11va2_hwaccel;
+extern const struct FFHWAccel ff_vc1_d3d12va_hwaccel;
 extern const struct FFHWAccel ff_vc1_dxva2_hwaccel;
 extern const struct FFHWAccel ff_vc1_nvdec_hwaccel;
 extern const struct FFHWAccel ff_vc1_vaapi_hwaccel;
@@ -83,6 +84,7 @@ extern const struct FFHWAccel ff_vp9_vdpau_hwaccel;
 extern const struct FFHWAccel ff_vp9_videotoolbox_hwaccel;
 extern const struct FFHWAccel ff_wmv3_d3d11va_hwaccel;
 extern const struct FFHWAccel ff_wmv3_d3d11va2_hwaccel;
+extern const struct FFHWAccel ff_wmv3_d3d12va_hwaccel;
 extern const struct FFHWAccel ff_wmv3_dxva2_hwaccel;
 extern const struct FFHWAccel ff_wmv3_nvdec_hwaccel;
 extern const struct FFHWAccel ff_wmv3_vaapi_hwaccel;
diff --git a/libavcodec/vc1dec.c b/libavcodec/vc1dec.c
index 871944d781..6eff2ec04c 100644
--- a/libavcodec/vc1dec.c
+++ b/libavcodec/vc1dec.c
@@ -1373,6 +1373,9 @@ static const enum AVPixelFormat vc1_hwaccel_pixfmt_list_420[] = {
     AV_PIX_FMT_D3D11VA_VLD,
     AV_PIX_FMT_D3D11,
 #endif
+#if CONFIG_VC1_D3D12VA_HWACCEL
+    AV_PIX_FMT_D3D12,
+#endif
 #if CONFIG_VC1_NVDEC_HWACCEL
     AV_PIX_FMT_CUDA,
 #endif
@@ -1408,6 +1411,9 @@ const FFCodec ff_vc1_decoder = {
 #if CONFIG_VC1_D3D11VA2_HWACCEL
                         HWACCEL_D3D11VA2(vc1),
 #endif
+#if CONFIG_VC1_D3D12VA_HWACCEL
+                        HWACCEL_D3D12VA(vc1),
+#endif
 #if CONFIG_VC1_NVDEC_HWACCEL
                         HWACCEL_NVDEC(vc1),
 #endif
@@ -1445,6 +1451,9 @@ const FFCodec ff_wmv3_decoder = {
 #if CONFIG_WMV3_D3D11VA2_HWACCEL
                         HWACCEL_D3D11VA2(wmv3),
 #endif
+#if CONFIG_WMV3_D3D12VA_HWACCEL
+                        HWACCEL_D3D12VA(wmv3),
+#endif
 #if CONFIG_WMV3_NVDEC_HWACCEL
                         HWACCEL_NVDEC(wmv3),
 #endif