libavcodec/d3d12va_av1.c - third_party/ffmpeg - Git at Google

 /*
  * Direct3D 12 AV1 HW acceleration
  *
  * copyright (c) 2022-2023 Wu Jianhua <toqsxw@outlook.com>
  *
  * 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 "libavutil/mem.h"
 #include "av1dec.h"
 #include "dxva2_internal.h"
 #include "d3d12va_decode.h"

 #define MAX_TILES 256

 typedef struct D3D12AV1DecodeContext {
     D3D12VADecodeContext ctx;
     uint8_t *bitstream_buffer;
 } D3D12AV1DecodeContext;

 #define D3D12_AV1_DECODE_CONTEXT(avctx) ((D3D12AV1DecodeContext *)D3D12VA_DECODE_CONTEXT(avctx))

 typedef struct AV1DecodePictureContext {
     DXVA_PicParams_AV1  pp;
     unsigned            tile_count;
     DXVA_Tile_AV1       tiles[MAX_TILES];
     uint8_t            *bitstream;
     unsigned            bitstream_size;
 } AV1DecodePictureContext;

 static int d3d12va_av1_start_frame(AVCodecContext *avctx, av_unused const uint8_t *buffer,  av_unused uint32_t size)
 {
     const AV1DecContext     *h       = avctx->priv_data;
     AV1DecodePictureContext *ctx_pic = h->cur_frame.hwaccel_picture_private;
     D3D12VADecodeContext    *ctx     = D3D12VA_DECODE_CONTEXT(avctx);
     if (!ctx)
         return -1;

     av_assert0(ctx_pic);

     ctx->used_mask = 0;

     if (ff_dxva2_av1_fill_picture_parameters(avctx, (AVDXVAContext *)ctx, &ctx_pic->pp) < 0)
         return -1;

     ctx_pic->bitstream      = NULL;
     ctx_pic->bitstream_size = 0;
     ctx_pic->tile_count     = 0;

     return 0;
 }

 static int d3d12va_av1_decode_slice(AVCodecContext *avctx,
                                    const uint8_t *buffer,
                                    uint32_t size)
 {
     const AV1DecContext     *h            = avctx->priv_data;
     const AV1RawFrameHeader *frame_header = h->raw_frame_header;
     AV1DecodePictureContext *ctx_pic      = h->cur_frame.hwaccel_picture_private;
     int offset = 0;
     uint32_t tg_start, tg_end;

     ctx_pic->tile_count = frame_header->tile_cols * frame_header->tile_rows;

     if (ctx_pic->tile_count > MAX_TILES)
         return AVERROR(ENOSYS);

     if (ctx_pic->tile_count == h->tg_end - h->tg_start + 1) {
         tg_start = 0;
         tg_end   = ctx_pic->tile_count - 1;
         ctx_pic->bitstream      = (uint8_t *)buffer;
         ctx_pic->bitstream_size = size;
     } else {
         ctx_pic->bitstream = D3D12_AV1_DECODE_CONTEXT(avctx)->bitstream_buffer;
         memcpy(ctx_pic->bitstream + ctx_pic->bitstream_size, buffer, size);
         tg_start = h->tg_start;
         tg_end   = h->tg_end;
         offset   = ctx_pic->bitstream_size;
         ctx_pic->bitstream_size += size;
     }

     for (uint32_t tile_num = tg_start; tile_num <= tg_end; tile_num++) {
         ctx_pic->tiles[tile_num].DataOffset   = offset + h->tile_group_info[tile_num].tile_offset;
         ctx_pic->tiles[tile_num].DataSize     = h->tile_group_info[tile_num].tile_size;
         ctx_pic->tiles[tile_num].row          = h->tile_group_info[tile_num].tile_row;
         ctx_pic->tiles[tile_num].column       = h->tile_group_info[tile_num].tile_column;
         ctx_pic->tiles[tile_num].anchor_frame = 0xFF;
     }

     return 0;
 }

 static int update_input_arguments(AVCodecContext *avctx, D3D12_VIDEO_DECODE_INPUT_STREAM_ARGUMENTS *input_args, ID3D12Resource *buffer)
 {
     const AV1DecContext     *h            = avctx->priv_data;
     AV1DecodePictureContext *ctx_pic      = h->cur_frame.hwaccel_picture_private;
     void *mapped_data;

     D3D12_VIDEO_DECODE_FRAME_ARGUMENT *args = &input_args->FrameArguments[input_args->NumFrameArguments++];
     args->Type  = D3D12_VIDEO_DECODE_ARGUMENT_TYPE_SLICE_CONTROL;
     args->Size  = sizeof(DXVA_Tile_AV1) * ctx_pic->tile_count;
     args->pData = ctx_pic->tiles;

     input_args->CompressedBitstream = (D3D12_VIDEO_DECODE_COMPRESSED_BITSTREAM){
         .pBuffer = buffer,
         .Offset  = 0,
         .Size    = ctx_pic->bitstream_size,
     };

     if (FAILED(ID3D12Resource_Map(buffer, 0, NULL, &mapped_data))) {
         av_log(avctx, AV_LOG_ERROR, "Failed to map D3D12 Buffer resource!\n");
         return AVERROR(EINVAL);
     }

     memcpy(mapped_data, ctx_pic->bitstream, ctx_pic->bitstream_size);

     ID3D12Resource_Unmap(buffer, 0, NULL);

     return 0;
 }

 static int d3d12va_av1_end_frame(AVCodecContext *avctx)
 {
     int ret;
     const AV1DecContext     *h       = avctx->priv_data;
     AV1DecodePictureContext *ctx_pic = h->cur_frame.hwaccel_picture_private;

     if (ctx_pic->tiles <= 0 || ctx_pic->bitstream_size <= 0)
         return -1;

     ret = ff_d3d12va_common_end_frame(avctx, h->cur_frame.f, &ctx_pic->pp, sizeof(ctx_pic->pp),
                                       NULL, 0, update_input_arguments);

     return ret;
 }

 static int d3d12va_av1_decode_init(AVCodecContext *avctx)
 {
     D3D12VADecodeContext    *ctx     = D3D12VA_DECODE_CONTEXT(avctx);
     D3D12AV1DecodeContext   *av1_ctx = D3D12_AV1_DECODE_CONTEXT(avctx);
     DXVA_PicParams_AV1 pp;

     int ret;

     if (avctx->profile != AV_PROFILE_AV1_MAIN)
         return AVERROR(EINVAL);

     ctx->cfg.DecodeProfile = D3D12_VIDEO_DECODE_PROFILE_AV1_PROFILE0;

     ctx->max_num_ref = FF_ARRAY_ELEMS(pp.RefFrameMapTextureIndex) + 1;

     ret = ff_d3d12va_decode_init(avctx);
     if (ret < 0)
         return ret;

     if (!av1_ctx->bitstream_buffer) {
         av1_ctx->bitstream_buffer = av_malloc(ff_d3d12va_get_suitable_max_bitstream_size(avctx));
         if (!av1_ctx->bitstream_buffer)
             return AVERROR(ENOMEM);
     }

     return 0;
 }

 static int d3d12va_av1_decode_uninit(AVCodecContext *avctx)
 {
     D3D12AV1DecodeContext   *ctx     = D3D12_AV1_DECODE_CONTEXT(avctx);

     if (ctx->bitstream_buffer)
         av_freep(&ctx->bitstream_buffer);

     return ff_d3d12va_decode_uninit(avctx);
 }

 #if CONFIG_AV1_D3D12VA_HWACCEL
 const FFHWAccel ff_av1_d3d12va_hwaccel = {
     .p.name               = "av1_d3d12va",
     .p.type               = AVMEDIA_TYPE_VIDEO,
     .p.id                 = AV_CODEC_ID_AV1,
     .p.pix_fmt            = AV_PIX_FMT_D3D12,
     .init                 = d3d12va_av1_decode_init,
     .uninit               = d3d12va_av1_decode_uninit,
     .start_frame          = d3d12va_av1_start_frame,
     .decode_slice         = d3d12va_av1_decode_slice,
     .end_frame            = d3d12va_av1_end_frame,
     .frame_params         = ff_d3d12va_common_frame_params,
     .frame_priv_data_size = sizeof(AV1DecodePictureContext),
     .priv_data_size       = sizeof(D3D12AV1DecodeContext),
 };
 #endif
	/*
	* Direct3D 12 AV1 HW acceleration
	*
	* copyright (c) 2022-2023 Wu Jianhua <toqsxw@outlook.com>
	*
	* 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 "libavutil/mem.h"
	#include "av1dec.h"
	#include "dxva2_internal.h"
	#include "d3d12va_decode.h"

	#define MAX_TILES 256

	typedef struct D3D12AV1DecodeContext {
	D3D12VADecodeContext ctx;
	uint8_t *bitstream_buffer;
	} D3D12AV1DecodeContext;

	#define D3D12_AV1_DECODE_CONTEXT(avctx) ((D3D12AV1DecodeContext *)D3D12VA_DECODE_CONTEXT(avctx))

	typedef struct AV1DecodePictureContext {
	DXVA_PicParams_AV1 pp;
	unsigned tile_count;
	DXVA_Tile_AV1 tiles[MAX_TILES];
	uint8_t *bitstream;
	unsigned bitstream_size;
	} AV1DecodePictureContext;

	static int d3d12va_av1_start_frame(AVCodecContext avctx, av_unused const uint8_t buffer, av_unused uint32_t size)
	{
	const AV1DecContext *h = avctx->priv_data;
	AV1DecodePictureContext *ctx_pic = h->cur_frame.hwaccel_picture_private;
	D3D12VADecodeContext *ctx = D3D12VA_DECODE_CONTEXT(avctx);
	if (!ctx)
	return -1;

	av_assert0(ctx_pic);

	ctx->used_mask = 0;

	if (ff_dxva2_av1_fill_picture_parameters(avctx, (AVDXVAContext *)ctx, &ctx_pic->pp) < 0)
	return -1;

	ctx_pic->bitstream = NULL;
	ctx_pic->bitstream_size = 0;
	ctx_pic->tile_count = 0;

	return 0;
	}

	static int d3d12va_av1_decode_slice(AVCodecContext *avctx,
	const uint8_t *buffer,
	uint32_t size)
	{
	const AV1DecContext *h = avctx->priv_data;
	const AV1RawFrameHeader *frame_header = h->raw_frame_header;
	AV1DecodePictureContext *ctx_pic = h->cur_frame.hwaccel_picture_private;
	int offset = 0;
	uint32_t tg_start, tg_end;

	ctx_pic->tile_count = frame_header->tile_cols * frame_header->tile_rows;

	if (ctx_pic->tile_count > MAX_TILES)
	return AVERROR(ENOSYS);

	if (ctx_pic->tile_count == h->tg_end - h->tg_start + 1) {
	tg_start = 0;
	tg_end = ctx_pic->tile_count - 1;
	ctx_pic->bitstream = (uint8_t *)buffer;
	ctx_pic->bitstream_size = size;
	} else {
	ctx_pic->bitstream = D3D12_AV1_DECODE_CONTEXT(avctx)->bitstream_buffer;
	memcpy(ctx_pic->bitstream + ctx_pic->bitstream_size, buffer, size);
	tg_start = h->tg_start;
	tg_end = h->tg_end;
	offset = ctx_pic->bitstream_size;
	ctx_pic->bitstream_size += size;
	}

	for (uint32_t tile_num = tg_start; tile_num <= tg_end; tile_num++) {
	ctx_pic->tiles[tile_num].DataOffset = offset + h->tile_group_info[tile_num].tile_offset;
	ctx_pic->tiles[tile_num].DataSize = h->tile_group_info[tile_num].tile_size;
	ctx_pic->tiles[tile_num].row = h->tile_group_info[tile_num].tile_row;
	ctx_pic->tiles[tile_num].column = h->tile_group_info[tile_num].tile_column;
	ctx_pic->tiles[tile_num].anchor_frame = 0xFF;
	}

	return 0;
	}

	static int update_input_arguments(AVCodecContext avctx, D3D12_VIDEO_DECODE_INPUT_STREAM_ARGUMENTS input_args, ID3D12Resource *buffer)
	{
	const AV1DecContext *h = avctx->priv_data;
	AV1DecodePictureContext *ctx_pic = h->cur_frame.hwaccel_picture_private;
	void *mapped_data;

	D3D12_VIDEO_DECODE_FRAME_ARGUMENT *args = &input_args->FrameArguments[input_args->NumFrameArguments++];
	args->Type = D3D12_VIDEO_DECODE_ARGUMENT_TYPE_SLICE_CONTROL;
	args->Size = sizeof(DXVA_Tile_AV1) * ctx_pic->tile_count;
	args->pData = ctx_pic->tiles;

	input_args->CompressedBitstream = (D3D12_VIDEO_DECODE_COMPRESSED_BITSTREAM){
	.pBuffer = buffer,
	.Offset = 0,
	.Size = ctx_pic->bitstream_size,
	};

	if (FAILED(ID3D12Resource_Map(buffer, 0, NULL, &mapped_data))) {
	av_log(avctx, AV_LOG_ERROR, "Failed to map D3D12 Buffer resource!\n");
	return AVERROR(EINVAL);
	}

	memcpy(mapped_data, ctx_pic->bitstream, ctx_pic->bitstream_size);

	ID3D12Resource_Unmap(buffer, 0, NULL);

	return 0;
	}

	static int d3d12va_av1_end_frame(AVCodecContext *avctx)
	{
	int ret;
	const AV1DecContext *h = avctx->priv_data;
	AV1DecodePictureContext *ctx_pic = h->cur_frame.hwaccel_picture_private;

	if (ctx_pic->tiles <= 0 \|\| ctx_pic->bitstream_size <= 0)
	return -1;

	ret = ff_d3d12va_common_end_frame(avctx, h->cur_frame.f, &ctx_pic->pp, sizeof(ctx_pic->pp),
	NULL, 0, update_input_arguments);

	return ret;
	}

	static int d3d12va_av1_decode_init(AVCodecContext *avctx)
	{
	D3D12VADecodeContext *ctx = D3D12VA_DECODE_CONTEXT(avctx);
	D3D12AV1DecodeContext *av1_ctx = D3D12_AV1_DECODE_CONTEXT(avctx);
	DXVA_PicParams_AV1 pp;

	int ret;

	if (avctx->profile != AV_PROFILE_AV1_MAIN)
	return AVERROR(EINVAL);

	ctx->cfg.DecodeProfile = D3D12_VIDEO_DECODE_PROFILE_AV1_PROFILE0;

	ctx->max_num_ref = FF_ARRAY_ELEMS(pp.RefFrameMapTextureIndex) + 1;

	ret = ff_d3d12va_decode_init(avctx);
	if (ret < 0)
	return ret;

	if (!av1_ctx->bitstream_buffer) {
	av1_ctx->bitstream_buffer = av_malloc(ff_d3d12va_get_suitable_max_bitstream_size(avctx));
	if (!av1_ctx->bitstream_buffer)
	return AVERROR(ENOMEM);
	}

	return 0;
	}

	static int d3d12va_av1_decode_uninit(AVCodecContext *avctx)
	{
	D3D12AV1DecodeContext *ctx = D3D12_AV1_DECODE_CONTEXT(avctx);

	if (ctx->bitstream_buffer)
	av_freep(&ctx->bitstream_buffer);

	return ff_d3d12va_decode_uninit(avctx);
	}

	#if CONFIG_AV1_D3D12VA_HWACCEL
	const FFHWAccel ff_av1_d3d12va_hwaccel = {
	.p.name = "av1_d3d12va",
	.p.type = AVMEDIA_TYPE_VIDEO,
	.p.id = AV_CODEC_ID_AV1,
	.p.pix_fmt = AV_PIX_FMT_D3D12,
	.init = d3d12va_av1_decode_init,
	.uninit = d3d12va_av1_decode_uninit,
	.start_frame = d3d12va_av1_start_frame,
	.decode_slice = d3d12va_av1_decode_slice,
	.end_frame = d3d12va_av1_end_frame,
	.frame_params = ff_d3d12va_common_frame_params,
	.frame_priv_data_size = sizeof(AV1DecodePictureContext),
	.priv_data_size = sizeof(D3D12AV1DecodeContext),
	};
	#endif