mirror of
https://github.com/FFmpeg/FFmpeg.git
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45a2f2635d
Signed-off-by: James Almer <jamrial@gmail.com>
207 lines
7.0 KiB
C
207 lines
7.0 KiB
C
/*
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* Direct3D 12 AV1 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 "av1dec.h"
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#include "dxva2_internal.h"
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#include "d3d12va_decode.h"
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#define MAX_TILES 256
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typedef struct D3D12AV1DecodeContext {
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D3D12VADecodeContext ctx;
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uint8_t *bitstream_buffer;
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} D3D12AV1DecodeContext;
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#define D3D12_AV1_DECODE_CONTEXT(avctx) ((D3D12AV1DecodeContext *)D3D12VA_DECODE_CONTEXT(avctx))
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typedef struct AV1DecodePictureContext {
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DXVA_PicParams_AV1 pp;
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unsigned tile_count;
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DXVA_Tile_AV1 tiles[MAX_TILES];
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uint8_t *bitstream;
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unsigned bitstream_size;
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} AV1DecodePictureContext;
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static int d3d12va_av1_start_frame(AVCodecContext *avctx, av_unused const uint8_t *buffer, av_unused uint32_t size)
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{
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const AV1DecContext *h = avctx->priv_data;
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AV1DecodePictureContext *ctx_pic = h->cur_frame.hwaccel_picture_private;
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D3D12VADecodeContext *ctx = D3D12VA_DECODE_CONTEXT(avctx);
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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_av1_fill_picture_parameters(avctx, (AVDXVAContext *)ctx, &ctx_pic->pp) < 0)
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return -1;
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ctx_pic->bitstream = NULL;
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ctx_pic->bitstream_size = 0;
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ctx_pic->tile_count = 0;
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return 0;
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}
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static int d3d12va_av1_decode_slice(AVCodecContext *avctx,
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const uint8_t *buffer,
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uint32_t size)
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{
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const AV1DecContext *h = avctx->priv_data;
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const AV1RawFrameHeader *frame_header = h->raw_frame_header;
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AV1DecodePictureContext *ctx_pic = h->cur_frame.hwaccel_picture_private;
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int offset = 0;
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uint32_t tg_start, tg_end;
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ctx_pic->tile_count = frame_header->tile_cols * frame_header->tile_rows;
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if (ctx_pic->tile_count > MAX_TILES)
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return AVERROR(ENOSYS);
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if (ctx_pic->tile_count == h->tg_end - h->tg_start + 1) {
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tg_start = 0;
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tg_end = ctx_pic->tile_count - 1;
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ctx_pic->bitstream = (uint8_t *)buffer;
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ctx_pic->bitstream_size = size;
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} else {
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ctx_pic->bitstream = D3D12_AV1_DECODE_CONTEXT(avctx)->bitstream_buffer;
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memcpy(ctx_pic->bitstream + ctx_pic->bitstream_size, buffer, size);
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tg_start = h->tg_start;
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tg_end = h->tg_end;
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offset = ctx_pic->bitstream_size;
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ctx_pic->bitstream_size += size;
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}
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for (uint32_t tile_num = tg_start; tile_num <= tg_end; tile_num++) {
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ctx_pic->tiles[tile_num].DataOffset = offset + h->tile_group_info[tile_num].tile_offset;
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ctx_pic->tiles[tile_num].DataSize = h->tile_group_info[tile_num].tile_size;
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ctx_pic->tiles[tile_num].row = h->tile_group_info[tile_num].tile_row;
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ctx_pic->tiles[tile_num].column = h->tile_group_info[tile_num].tile_column;
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ctx_pic->tiles[tile_num].anchor_frame = 0xFF;
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}
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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 AV1DecContext *h = avctx->priv_data;
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AV1DecodePictureContext *ctx_pic = h->cur_frame.hwaccel_picture_private;
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void *mapped_data;
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D3D12_VIDEO_DECODE_FRAME_ARGUMENT *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(DXVA_Tile_AV1) * ctx_pic->tile_count;
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args->pData = ctx_pic->tiles;
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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->bitstream_size,
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};
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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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memcpy(mapped_data, ctx_pic->bitstream, ctx_pic->bitstream_size);
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ID3D12Resource_Unmap(buffer, 0, NULL);
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return 0;
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}
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static int d3d12va_av1_end_frame(AVCodecContext *avctx)
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{
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int ret;
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const AV1DecContext *h = avctx->priv_data;
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AV1DecodePictureContext *ctx_pic = h->cur_frame.hwaccel_picture_private;
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if (ctx_pic->tiles <= 0 || ctx_pic->bitstream_size <= 0)
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return -1;
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ret = ff_d3d12va_common_end_frame(avctx, h->cur_frame.f, &ctx_pic->pp, sizeof(ctx_pic->pp),
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NULL, 0, update_input_arguments);
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return ret;
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}
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static int d3d12va_av1_decode_init(AVCodecContext *avctx)
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{
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D3D12VADecodeContext *ctx = D3D12VA_DECODE_CONTEXT(avctx);
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D3D12AV1DecodeContext *av1_ctx = D3D12_AV1_DECODE_CONTEXT(avctx);
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DXVA_PicParams_AV1 pp;
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int ret;
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if (avctx->profile != AV_PROFILE_AV1_MAIN)
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return AVERROR(EINVAL);
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ctx->cfg.DecodeProfile = D3D12_VIDEO_DECODE_PROFILE_AV1_PROFILE0;
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ctx->max_num_ref = FF_ARRAY_ELEMS(pp.RefFrameMapTextureIndex) + 1;
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ret = ff_d3d12va_decode_init(avctx);
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if (ret < 0)
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return ret;
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if (!av1_ctx->bitstream_buffer) {
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av1_ctx->bitstream_buffer = av_malloc(ff_d3d12va_get_suitable_max_bitstream_size(avctx));
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if (!av1_ctx->bitstream_buffer)
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return AVERROR(ENOMEM);
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}
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return 0;
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}
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static int d3d12va_av1_decode_uninit(AVCodecContext *avctx)
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{
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D3D12AV1DecodeContext *ctx = D3D12_AV1_DECODE_CONTEXT(avctx);
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if (ctx->bitstream_buffer)
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av_freep(&ctx->bitstream_buffer);
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return ff_d3d12va_decode_uninit(avctx);
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}
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#if CONFIG_AV1_D3D12VA_HWACCEL
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const FFHWAccel ff_av1_d3d12va_hwaccel = {
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.p.name = "av1_d3d12va",
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.p.type = AVMEDIA_TYPE_VIDEO,
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.p.id = AV_CODEC_ID_AV1,
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.p.pix_fmt = AV_PIX_FMT_D3D12,
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.init = d3d12va_av1_decode_init,
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.uninit = d3d12va_av1_decode_uninit,
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.start_frame = d3d12va_av1_start_frame,
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.decode_slice = d3d12va_av1_decode_slice,
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.end_frame = d3d12va_av1_end_frame,
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.frame_params = ff_d3d12va_common_frame_params,
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.frame_priv_data_size = sizeof(AV1DecodePictureContext),
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.priv_data_size = sizeof(D3D12AV1DecodeContext),
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};
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#endif
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