/* * Direct3D12 WMV3/VC-1 HW acceleration * * copyright (c) 2022-2023 Wu Jianhua * * 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 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) { 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, (void **)&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