2023-12-05 08:46:46 +02:00
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/*
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* Direct3D 12 VP9 HW acceleration
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*
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* copyright (c) 2022-2023 Wu Jianhua <toqsxw@outlook.com>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "config_components.h"
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#include "libavutil/avassert.h"
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#include "libavutil/pixdesc.h"
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#include "libavutil/hwcontext_d3d12va_internal.h"
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#include "vp9shared.h"
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#include "dxva2_internal.h"
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#include "d3d12va_decode.h"
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typedef struct VP9DecodePictureContext {
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DXVA_PicParams_VP9 pp;
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DXVA_Slice_VPx_Short slice;
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const uint8_t *bitstream;
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unsigned bitstream_size;
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} VP9DecodePictureContext;
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static void fill_slice_short(DXVA_Slice_VPx_Short *slice, unsigned position, unsigned size)
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{
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memset(slice, 0, sizeof(*slice));
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slice->BSNALunitDataLocation = position;
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slice->SliceBytesInBuffer = size;
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slice->wBadSliceChopping = 0;
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}
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static int d3d12va_vp9_start_frame(AVCodecContext *avctx, av_unused const uint8_t *buffer, av_unused uint32_t size)
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{
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const VP9SharedContext *h = avctx->priv_data;
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D3D12VADecodeContext *ctx = D3D12VA_DECODE_CONTEXT(avctx);
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VP9DecodePictureContext *ctx_pic = h->frames[CUR_FRAME].hwaccel_picture_private;
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if (!ctx)
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return -1;
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av_assert0(ctx_pic);
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ctx->used_mask = 0;
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if (ff_dxva2_vp9_fill_picture_parameters(avctx, (AVDXVAContext *)ctx, &ctx_pic->pp) < 0)
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return -1;
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ctx_pic->bitstream_size = 0;
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ctx_pic->bitstream = NULL;
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return 0;
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}
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static int d3d12va_vp9_decode_slice(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size)
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{
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const VP9SharedContext *h = avctx->priv_data;
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VP9DecodePictureContext *ctx_pic = h->frames[CUR_FRAME].hwaccel_picture_private;
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unsigned position;
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if (!ctx_pic->bitstream)
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ctx_pic->bitstream = buffer;
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ctx_pic->bitstream_size += size;
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position = buffer - ctx_pic->bitstream;
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fill_slice_short(&ctx_pic->slice, position, size);
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return 0;
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}
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static int update_input_arguments(AVCodecContext *avctx, D3D12_VIDEO_DECODE_INPUT_STREAM_ARGUMENTS *input_args, ID3D12Resource *buffer)
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{
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D3D12VADecodeContext *ctx = D3D12VA_DECODE_CONTEXT(avctx);
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AVHWFramesContext *frames_ctx = D3D12VA_FRAMES_CONTEXT(avctx);
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AVD3D12VAFramesContext *frames_hwctx = frames_ctx->hwctx;
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const VP9SharedContext *h = avctx->priv_data;
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VP9DecodePictureContext *ctx_pic = h->frames[CUR_FRAME].hwaccel_picture_private;
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uint8_t *mapped_data;
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D3D12_VIDEO_DECODE_FRAME_ARGUMENT *args;
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if (FAILED(ID3D12Resource_Map(buffer, 0, NULL, &mapped_data))) {
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av_log(avctx, AV_LOG_ERROR, "Failed to map D3D12 Buffer resource!\n");
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return AVERROR(EINVAL);
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}
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args = &input_args->FrameArguments[input_args->NumFrameArguments++];
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args->Type = D3D12_VIDEO_DECODE_ARGUMENT_TYPE_SLICE_CONTROL;
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args->Size = sizeof(ctx_pic->slice);
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args->pData = &ctx_pic->slice;
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memcpy(mapped_data, ctx_pic->bitstream, ctx_pic->slice.SliceBytesInBuffer);
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ID3D12Resource_Unmap(buffer, 0, NULL);
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input_args->CompressedBitstream = (D3D12_VIDEO_DECODE_COMPRESSED_BITSTREAM){
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.pBuffer = buffer,
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.Offset = 0,
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.Size = ctx_pic->slice.SliceBytesInBuffer,
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};
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return 0;
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}
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static int d3d12va_vp9_end_frame(AVCodecContext *avctx)
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{
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VP9SharedContext *h = avctx->priv_data;
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VP9DecodePictureContext *ctx_pic = h->frames[CUR_FRAME].hwaccel_picture_private;
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if (ctx_pic->bitstream_size <= 0)
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return -1;
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return ff_d3d12va_common_end_frame(avctx, h->frames[CUR_FRAME].tf.f,
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&ctx_pic->pp, sizeof(ctx_pic->pp), NULL, 0, update_input_arguments);
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}
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static int d3d12va_vp9_decode_init(AVCodecContext *avctx)
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{
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D3D12VADecodeContext *ctx = D3D12VA_DECODE_CONTEXT(avctx);
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DXVA_PicParams_VP9 pp;
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switch (avctx->profile) {
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2023-12-22 18:27:58 +02:00
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case AV_PROFILE_VP9_2:
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case AV_PROFILE_VP9_3:
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2023-12-05 08:46:46 +02:00
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ctx->cfg.DecodeProfile = D3D12_VIDEO_DECODE_PROFILE_VP9_10BIT_PROFILE2;
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break;
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2023-12-22 18:27:58 +02:00
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case AV_PROFILE_VP9_0:
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case AV_PROFILE_VP9_1:
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2023-12-05 08:46:46 +02:00
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default:
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ctx->cfg.DecodeProfile = D3D12_VIDEO_DECODE_PROFILE_VP9;
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break;
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};
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2023-12-28 05:10:38 +02:00
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ctx->max_num_ref = FF_ARRAY_ELEMS(pp.ref_frame_map) + 1;
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2023-12-05 08:46:46 +02:00
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return ff_d3d12va_decode_init(avctx);
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}
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#if CONFIG_VP9_D3D12VA_HWACCEL
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const FFHWAccel ff_vp9_d3d12va_hwaccel = {
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.p.name = "vp9_d3d12va",
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.p.type = AVMEDIA_TYPE_VIDEO,
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.p.id = AV_CODEC_ID_VP9,
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.p.pix_fmt = AV_PIX_FMT_D3D12,
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.init = d3d12va_vp9_decode_init,
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.uninit = ff_d3d12va_decode_uninit,
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.start_frame = d3d12va_vp9_start_frame,
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.decode_slice = d3d12va_vp9_decode_slice,
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.end_frame = d3d12va_vp9_end_frame,
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.frame_params = ff_d3d12va_common_frame_params,
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.frame_priv_data_size = sizeof(VP9DecodePictureContext),
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.priv_data_size = sizeof(D3D12VADecodeContext),
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};
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#endif
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