| /* |
| * Direct3D 12 VP9 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/pixdesc.h" |
| #include "libavutil/hwcontext_d3d12va_internal.h" |
| |
| #include "vp9shared.h" |
| #include "dxva2_internal.h" |
| #include "d3d12va_decode.h" |
| |
| typedef struct VP9DecodePictureContext { |
| DXVA_PicParams_VP9 pp; |
| DXVA_Slice_VPx_Short slice; |
| const uint8_t *bitstream; |
| unsigned bitstream_size; |
| } VP9DecodePictureContext; |
| |
| static void fill_slice_short(DXVA_Slice_VPx_Short *slice, unsigned position, unsigned size) |
| { |
| memset(slice, 0, sizeof(*slice)); |
| slice->BSNALunitDataLocation = position; |
| slice->SliceBytesInBuffer = size; |
| slice->wBadSliceChopping = 0; |
| } |
| |
| static int d3d12va_vp9_start_frame(AVCodecContext *avctx, av_unused const uint8_t *buffer, av_unused uint32_t size) |
| { |
| const VP9SharedContext *h = avctx->priv_data; |
| D3D12VADecodeContext *ctx = D3D12VA_DECODE_CONTEXT(avctx); |
| VP9DecodePictureContext *ctx_pic = h->frames[CUR_FRAME].hwaccel_picture_private; |
| |
| if (!ctx) |
| return -1; |
| |
| av_assert0(ctx_pic); |
| |
| ctx->used_mask = 0; |
| |
| if (ff_dxva2_vp9_fill_picture_parameters(avctx, (AVDXVAContext *)ctx, &ctx_pic->pp) < 0) |
| return -1; |
| |
| ctx_pic->bitstream_size = 0; |
| ctx_pic->bitstream = NULL; |
| |
| return 0; |
| } |
| |
| static int d3d12va_vp9_decode_slice(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size) |
| { |
| const VP9SharedContext *h = avctx->priv_data; |
| VP9DecodePictureContext *ctx_pic = h->frames[CUR_FRAME].hwaccel_picture_private; |
| unsigned position; |
| |
| if (!ctx_pic->bitstream) |
| ctx_pic->bitstream = buffer; |
| ctx_pic->bitstream_size += size; |
| |
| position = buffer - ctx_pic->bitstream; |
| fill_slice_short(&ctx_pic->slice, position, size); |
| |
| return 0; |
| } |
| |
| static int update_input_arguments(AVCodecContext *avctx, D3D12_VIDEO_DECODE_INPUT_STREAM_ARGUMENTS *input_args, ID3D12Resource *buffer) |
| { |
| const VP9SharedContext *h = avctx->priv_data; |
| VP9DecodePictureContext *ctx_pic = h->frames[CUR_FRAME].hwaccel_picture_private; |
| |
| void *mapped_data; |
| D3D12_VIDEO_DECODE_FRAME_ARGUMENT *args; |
| |
| 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); |
| } |
| |
| args = &input_args->FrameArguments[input_args->NumFrameArguments++]; |
| args->Type = D3D12_VIDEO_DECODE_ARGUMENT_TYPE_SLICE_CONTROL; |
| args->Size = sizeof(ctx_pic->slice); |
| args->pData = &ctx_pic->slice; |
| |
| memcpy(mapped_data, ctx_pic->bitstream, ctx_pic->slice.SliceBytesInBuffer); |
| |
| ID3D12Resource_Unmap(buffer, 0, NULL); |
| |
| input_args->CompressedBitstream = (D3D12_VIDEO_DECODE_COMPRESSED_BITSTREAM){ |
| .pBuffer = buffer, |
| .Offset = 0, |
| .Size = ctx_pic->slice.SliceBytesInBuffer, |
| }; |
| |
| return 0; |
| } |
| |
| static int d3d12va_vp9_end_frame(AVCodecContext *avctx) |
| { |
| VP9SharedContext *h = avctx->priv_data; |
| VP9DecodePictureContext *ctx_pic = h->frames[CUR_FRAME].hwaccel_picture_private; |
| |
| if (ctx_pic->bitstream_size <= 0) |
| return -1; |
| |
| return ff_d3d12va_common_end_frame(avctx, h->frames[CUR_FRAME].tf.f, |
| &ctx_pic->pp, sizeof(ctx_pic->pp), NULL, 0, update_input_arguments); |
| } |
| |
| static int d3d12va_vp9_decode_init(AVCodecContext *avctx) |
| { |
| D3D12VADecodeContext *ctx = D3D12VA_DECODE_CONTEXT(avctx); |
| DXVA_PicParams_VP9 pp; |
| |
| switch (avctx->profile) { |
| case AV_PROFILE_VP9_2: |
| case AV_PROFILE_VP9_3: |
| ctx->cfg.DecodeProfile = D3D12_VIDEO_DECODE_PROFILE_VP9_10BIT_PROFILE2; |
| break; |
| |
| case AV_PROFILE_VP9_0: |
| case AV_PROFILE_VP9_1: |
| default: |
| ctx->cfg.DecodeProfile = D3D12_VIDEO_DECODE_PROFILE_VP9; |
| break; |
| }; |
| |
| ctx->max_num_ref = FF_ARRAY_ELEMS(pp.ref_frame_map) + 1; |
| |
| return ff_d3d12va_decode_init(avctx); |
| } |
| |
| #if CONFIG_VP9_D3D12VA_HWACCEL |
| const FFHWAccel ff_vp9_d3d12va_hwaccel = { |
| .p.name = "vp9_d3d12va", |
| .p.type = AVMEDIA_TYPE_VIDEO, |
| .p.id = AV_CODEC_ID_VP9, |
| .p.pix_fmt = AV_PIX_FMT_D3D12, |
| .init = d3d12va_vp9_decode_init, |
| .uninit = ff_d3d12va_decode_uninit, |
| .start_frame = d3d12va_vp9_start_frame, |
| .decode_slice = d3d12va_vp9_decode_slice, |
| .end_frame = d3d12va_vp9_end_frame, |
| .frame_params = ff_d3d12va_common_frame_params, |
| .frame_priv_data_size = sizeof(VP9DecodePictureContext), |
| .priv_data_size = sizeof(D3D12VADecodeContext), |
| }; |
| #endif |