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fe6037fd04
There are two types of MPVPictures: Three (cur_pic, last_pic, next_pic) that are directly part of MpegEncContext and an array of MPVPictures that are separately allocated and are mostly accessed via pointers (cur|last|next)_pic_ptr; they are also used to store AVFrames in the encoder (necessary due to B-frames). As the name implies, each of the former is directly associated with one of the _ptr pointers: They actually share the same underlying buffers, but the ones that are part of the context can have their data pointers offset and their linesize doubled for field pictures. Up until now, each of these had their own references; in particular, there was an underlying av_frame_ref() to sync cur_pic and cur_pic_ptr etc. This is wasteful. This commit changes this relationship: cur_pic, last_pic and next_pic now become MPVWorkPictures; this structure does not have an AVFrame at all any more, but only the cached values of data and linesize. It also contains a pointer to the corresponding MPVPicture, establishing a more natural relationsship between the two. This already means that creating the context-pictures from the pointers can no longer fail. What has not been changed is the fact that the MPVPicture* pointers are not ownership pointers and that the MPVPictures are part of an array of MPVPictures that is owned by a single AVCodecContext. Doing so will be done in a latter commit. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
215 lines
7.4 KiB
C
215 lines
7.4 KiB
C
/*
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* Direct3D12 WMV3/VC-1 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/hwcontext_d3d12va_internal.h"
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#include "mpegutils.h"
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#include "mpegvideodec.h"
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#include "vc1.h"
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#include "vc1data.h"
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#include "d3d12va_decode.h"
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#include "dxva2_internal.h"
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#define MAX_SLICES 1024
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#define INVALID_REF 0xffff
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typedef struct D3D12DecodePictureContext {
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DXVA_PictureParameters pp;
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unsigned slice_count;
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DXVA_SliceInfo slices[MAX_SLICES];
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const uint8_t *bitstream;
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unsigned bitstream_size;
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} D3D12DecodePictureContext;
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static int d3d12va_vc1_start_frame(AVCodecContext *avctx, av_unused const uint8_t *buffer, av_unused uint32_t size)
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{
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const VC1Context *v = avctx->priv_data;
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D3D12VADecodeContext *ctx = D3D12VA_DECODE_CONTEXT(avctx);
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D3D12DecodePictureContext *ctx_pic = v->s.cur_pic.ptr->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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ff_dxva2_vc1_fill_picture_parameters(avctx, (AVDXVAContext *)ctx, &ctx_pic->pp);
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ctx_pic->pp.wDeblockedPictureIndex = INVALID_REF;
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ctx_pic->bitstream = NULL;
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ctx_pic->bitstream_size = 0;
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ctx_pic->slice_count = 0;
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return 0;
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}
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static int d3d12va_vc1_decode_slice(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size)
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{
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const VC1Context *v = avctx->priv_data;
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D3D12DecodePictureContext *ctx_pic = v->s.cur_pic.ptr->hwaccel_picture_private;
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if (ctx_pic->slice_count >= MAX_SLICES) {
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return AVERROR(ERANGE);
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}
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if (avctx->codec_id == AV_CODEC_ID_VC1 &&
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size >= 4 && IS_MARKER(AV_RB32(buffer))) {
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buffer += 4;
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size -= 4;
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}
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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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ff_dxva2_vc1_fill_slice(avctx, &ctx_pic->slices[ctx_pic->slice_count++],
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buffer - ctx_pic->bitstream, 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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const VC1Context *v = avctx->priv_data;
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const MpegEncContext *s = &v->s;
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D3D12DecodePictureContext *ctx_pic = s->cur_pic.ptr->hwaccel_picture_private;
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D3D12_VIDEO_DECODE_FRAME_ARGUMENT *args = &input_args->FrameArguments[input_args->NumFrameArguments++];
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const unsigned mb_count = s->mb_width * (s->mb_height >> v->field_mode);
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uint8_t *mapped_data, *mapped_ptr;
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static const uint8_t start_code[] = { 0, 0, 1, 0x0d };
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if (FAILED(ID3D12Resource_Map(buffer, 0, NULL, (void **)&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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mapped_ptr = mapped_data;
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for (int i = 0; i < ctx_pic->slice_count; i++) {
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DXVA_SliceInfo *slice = &ctx_pic->slices[i];
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unsigned position = slice->dwSliceDataLocation;
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unsigned size = slice->dwSliceBitsInBuffer / 8;
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slice->dwSliceDataLocation = mapped_ptr - mapped_data;
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if (i < ctx_pic->slice_count - 1)
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slice->wNumberMBsInSlice = slice[1].wNumberMBsInSlice - slice[0].wNumberMBsInSlice;
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else
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slice->wNumberMBsInSlice = mb_count - slice[0].wNumberMBsInSlice;
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if (avctx->codec_id == AV_CODEC_ID_VC1) {
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memcpy(mapped_ptr, start_code, sizeof(start_code));
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if (i == 0 && v->second_field)
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mapped_ptr[3] = 0x0c;
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else if (i > 0)
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mapped_ptr[3] = 0x0b;
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mapped_ptr += sizeof(start_code);
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slice->dwSliceBitsInBuffer += sizeof(start_code) * 8;
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}
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memcpy(mapped_ptr, &ctx_pic->bitstream[position], size);
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mapped_ptr += size;
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}
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ID3D12Resource_Unmap(buffer, 0, NULL);
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args->Type = D3D12_VIDEO_DECODE_ARGUMENT_TYPE_SLICE_CONTROL;
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args->Size = sizeof(DXVA_SliceInfo) * ctx_pic->slice_count;
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args->pData = ctx_pic->slices;
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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 = mapped_ptr - mapped_data,
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};
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return 0;
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}
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static int d3d12va_vc1_end_frame(AVCodecContext *avctx)
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{
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const VC1Context *v = avctx->priv_data;
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D3D12DecodePictureContext *ctx_pic = v->s.cur_pic.ptr->hwaccel_picture_private;
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if (ctx_pic->slice_count <= 0 || ctx_pic->bitstream_size <= 0)
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return -1;
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return ff_d3d12va_common_end_frame(avctx, v->s.cur_pic.ptr->f,
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&ctx_pic->pp, sizeof(ctx_pic->pp),
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NULL, 0,
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update_input_arguments);
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}
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static int d3d12va_vc1_decode_init(AVCodecContext *avctx)
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{
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int ret;
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D3D12VADecodeContext *ctx = D3D12VA_DECODE_CONTEXT(avctx);
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ctx->cfg.DecodeProfile = D3D12_VIDEO_DECODE_PROFILE_VC1_D2010;
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ctx->max_num_ref = 3;
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ret = ff_d3d12va_decode_init(avctx);
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if (ret < 0) {
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ctx->cfg.DecodeProfile = D3D12_VIDEO_DECODE_PROFILE_VC1;
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ret = ff_d3d12va_decode_init(avctx);
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}
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return ret;
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}
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#if CONFIG_WMV3_D3D12VA_HWACCEL
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const FFHWAccel ff_wmv3_d3d12va_hwaccel = {
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.p.name = "wmv3_d3d12va",
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.p.type = AVMEDIA_TYPE_VIDEO,
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.p.id = AV_CODEC_ID_WMV3,
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.p.pix_fmt = AV_PIX_FMT_D3D12,
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.init = d3d12va_vc1_decode_init,
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.uninit = ff_d3d12va_decode_uninit,
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.start_frame = d3d12va_vc1_start_frame,
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.decode_slice = d3d12va_vc1_decode_slice,
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.end_frame = d3d12va_vc1_end_frame,
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.frame_params = ff_d3d12va_common_frame_params,
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.frame_priv_data_size = sizeof(D3D12DecodePictureContext),
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.priv_data_size = sizeof(D3D12VADecodeContext),
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};
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#endif
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#if CONFIG_VC1_D3D12VA_HWACCEL
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const FFHWAccel ff_vc1_d3d12va_hwaccel = {
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.p.name = "vc1_d3d12va",
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.p.type = AVMEDIA_TYPE_VIDEO,
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.p.id = AV_CODEC_ID_VC1,
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.p.pix_fmt = AV_PIX_FMT_D3D12,
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.init = d3d12va_vc1_decode_init,
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.uninit = ff_d3d12va_decode_uninit,
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.start_frame = d3d12va_vc1_start_frame,
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.decode_slice = d3d12va_vc1_decode_slice,
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.end_frame = d3d12va_vc1_end_frame,
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.frame_params = ff_d3d12va_common_frame_params,
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.frame_priv_data_size = sizeof(D3D12DecodePictureContext),
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.priv_data_size = sizeof(D3D12VADecodeContext),
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};
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#endif
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