mirror of https://github.com/FFmpeg/FFmpeg.git
The command below is how to enable d3d12va: ffmpeg -hwaccel d3d12va -i input.mp4 output.mp4 Signed-off-by: Wu Jianhua <toqsxw@outlook.com> Signed-off-by: Tong Wu <tong1.wu@intel.com>release/7.0
Wu Jianhua
1 year ago
committed by
Haihao Xiang
parent
349ce30e4e
commit
cbb93c4ff6
7 changed files with 234 additions and 6 deletions
@ -0,0 +1,208 @@ |
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/*
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* Direct3D 12 HEVC 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 "hevc_data.h" |
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#include "hevcdec.h" |
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#include "dxva2_internal.h" |
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#include "d3d12va_decode.h" |
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#include <dxva.h> |
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#define MAX_SLICES 256 |
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typedef struct HEVCDecodePictureContext { |
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DXVA_PicParams_HEVC pp; |
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DXVA_Qmatrix_HEVC qm; |
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unsigned slice_count; |
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DXVA_Slice_HEVC_Short slice_short[MAX_SLICES]; |
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const uint8_t *bitstream; |
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unsigned bitstream_size; |
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} HEVCDecodePictureContext; |
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static void fill_slice_short(DXVA_Slice_HEVC_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_hevc_start_frame(AVCodecContext *avctx, av_unused const uint8_t *buffer, av_unused uint32_t size) |
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{ |
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const HEVCContext *h = avctx->priv_data; |
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D3D12VADecodeContext *ctx = D3D12VA_DECODE_CONTEXT(avctx); |
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HEVCDecodePictureContext *ctx_pic = h->ref->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_hevc_fill_picture_parameters(avctx, (AVDXVAContext *)ctx, &ctx_pic->pp); |
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ff_dxva2_hevc_fill_scaling_lists(avctx, (AVDXVAContext *)ctx, &ctx_pic->qm); |
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ctx_pic->slice_count = 0; |
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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_hevc_decode_slice(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size) |
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{ |
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const HEVCContext *h = avctx->priv_data; |
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const HEVCFrame *current_picture = h->ref; |
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HEVCDecodePictureContext *ctx_pic = current_picture->hwaccel_picture_private; |
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unsigned position; |
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if (ctx_pic->slice_count >= MAX_SLICES) |
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return AVERROR(ERANGE); |
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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_short[ctx_pic->slice_count], position, size); |
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ctx_pic->slice_count++; |
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return 0; |
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} |
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#define START_CODE 65536 |
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#define START_CODE_SIZE 3 |
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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 HEVCContext *h = avctx->priv_data; |
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const HEVCFrame *current_picture = h->ref; |
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HEVCDecodePictureContext *ctx_pic = current_picture->hwaccel_picture_private; |
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int i; |
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uint8_t *mapped_data, *mapped_ptr; |
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DXVA_Slice_HEVC_Short *slice; |
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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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mapped_ptr = mapped_data; |
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for (i = 0; i < ctx_pic->slice_count; i++) { |
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UINT position, size; |
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slice = &ctx_pic->slice_short[i]; |
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position = slice->BSNALunitDataLocation; |
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size = slice->SliceBytesInBuffer; |
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slice->SliceBytesInBuffer += START_CODE_SIZE; |
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slice->BSNALunitDataLocation = mapped_ptr - mapped_data; |
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*(uint32_t *)mapped_ptr = START_CODE; |
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mapped_ptr += START_CODE_SIZE; |
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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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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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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_Slice_HEVC_Short) * ctx_pic->slice_count; |
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args->pData = ctx_pic->slice_short; |
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return 0; |
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} |
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static int d3d12va_hevc_end_frame(AVCodecContext *avctx) |
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{ |
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HEVCContext *h = avctx->priv_data; |
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HEVCDecodePictureContext *ctx_pic = h->ref->hwaccel_picture_private; |
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int scale = ctx_pic->pp.dwCodingParamToolFlags & 1; |
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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, h->ref->frame, &ctx_pic->pp, sizeof(ctx_pic->pp), |
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scale ? &ctx_pic->qm : NULL, scale ? sizeof(ctx_pic->qm) : 0, update_input_arguments); |
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} |
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static int d3d12va_hevc_decode_init(AVCodecContext *avctx) |
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{ |
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HEVCContext *h = avctx->priv_data; |
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D3D12VADecodeContext *ctx = D3D12VA_DECODE_CONTEXT(avctx); |
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DXVA_PicParams_HEVC pp; |
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switch (avctx->profile) { |
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case FF_PROFILE_HEVC_MAIN_10: |
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ctx->cfg.DecodeProfile = D3D12_VIDEO_DECODE_PROFILE_HEVC_MAIN10; |
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break; |
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case FF_PROFILE_HEVC_MAIN_STILL_PICTURE: |
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av_log(avctx, AV_LOG_ERROR, "D3D12 doesn't support PROFILE_HEVC_MAIN_STILL_PICTURE!\n"); |
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return AVERROR(EINVAL); |
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case FF_PROFILE_HEVC_MAIN: |
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default: |
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ctx->cfg.DecodeProfile = D3D12_VIDEO_DECODE_PROFILE_HEVC_MAIN; |
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break; |
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}; |
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ctx->max_num_ref = FF_ARRAY_ELEMS(pp.RefPicList) + 1; |
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return ff_d3d12va_decode_init(avctx); |
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} |
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#if CONFIG_HEVC_D3D12VA_HWACCEL |
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const FFHWAccel ff_hevc_d3d12va_hwaccel = { |
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.p.name = "hevc_d3d12va", |
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.p.type = AVMEDIA_TYPE_VIDEO, |
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.p.id = AV_CODEC_ID_HEVC, |
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.p.pix_fmt = AV_PIX_FMT_D3D12, |
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.init = d3d12va_hevc_decode_init, |
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.uninit = ff_d3d12va_decode_uninit, |
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.start_frame = d3d12va_hevc_start_frame, |
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.decode_slice = d3d12va_hevc_decode_slice, |
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.end_frame = d3d12va_hevc_end_frame, |
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.frame_params = ff_d3d12va_common_frame_params, |
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.frame_priv_data_size = sizeof(HEVCDecodePictureContext), |
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.priv_data_size = sizeof(D3D12VADecodeContext), |
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}; |
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#endif |
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