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FFmpeg/libavcodec/d3d12va_encode_hevc.c
Araz Iusubov c2ce387385 avcodec/d3d12va_encode: texture array support for HEVC 
This patch adds support for the texture array feature
used by AMD boards in the D3D12 HEVC encoder.
In texture array mode, a single texture array is shared for all
reference and reconstructed pictures using different subresources.
The implementation ensures compatibility
and has been successfully tested on AMD, Intel, and NVIDIA GPUs.
2025-09-03 11:56:06 +02:00

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/*
* Direct3D 12 HW acceleration video encoder
*
* Copyright (c) 2024 Intel Corporation
*
* 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 "libavutil/opt.h"
#include "libavutil/common.h"
#include "libavutil/mem.h"
#include "libavutil/pixdesc.h"
#include "libavutil/hwcontext_d3d12va_internal.h"
#include "avcodec.h"
#include "cbs.h"
#include "cbs_h265.h"
#include "hw_base_encode_h265.h"
#include "h2645data.h"
#include "h265_profile_level.h"
#include "codec_internal.h"
#include "d3d12va_encode.h"
typedef struct D3D12VAEncodeHEVCPicture {
int pic_order_cnt;
int64_t last_idr_frame;
} D3D12VAEncodeHEVCPicture;
typedef struct D3D12VAEncodeHEVCContext {
D3D12VAEncodeContext common;
// User options.
int qp;
int profile;
int level;
// Writer structures.
FFHWBaseEncodeH265 units;
FFHWBaseEncodeH265Opts unit_opts;
CodedBitstreamContext *cbc;
CodedBitstreamFragment current_access_unit;
} D3D12VAEncodeHEVCContext;
typedef struct D3D12VAEncodeHEVCLevel {
int level;
D3D12_VIDEO_ENCODER_LEVELS_HEVC d3d12_level;
} D3D12VAEncodeHEVCLevel;
static const D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_SUPPORT_HEVC hevc_config_support_sets[] =
{
{
D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_SUPPORT_HEVC_FLAG_NONE,
D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_CUSIZE_8x8,
D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_CUSIZE_32x32,
D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_TUSIZE_4x4,
D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_TUSIZE_32x32,
3,
3,
},
{
D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_SUPPORT_HEVC_FLAG_NONE,
D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_CUSIZE_8x8,
D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_CUSIZE_32x32,
D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_TUSIZE_4x4,
D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_TUSIZE_32x32,
0,
0,
},
{
D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_SUPPORT_HEVC_FLAG_NONE,
D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_CUSIZE_8x8,
D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_CUSIZE_32x32,
D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_TUSIZE_4x4,
D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_TUSIZE_32x32,
2,
2,
},
{
D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_SUPPORT_HEVC_FLAG_NONE,
D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_CUSIZE_8x8,
D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_CUSIZE_64x64,
D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_TUSIZE_4x4,
D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_TUSIZE_32x32,
2,
2,
},
{
D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_SUPPORT_HEVC_FLAG_NONE,
D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_CUSIZE_8x8,
D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_CUSIZE_64x64,
D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_TUSIZE_4x4,
D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_TUSIZE_32x32,
4,
4,
},
};
static const D3D12VAEncodeHEVCLevel hevc_levels[] = {
{ 30, D3D12_VIDEO_ENCODER_LEVELS_HEVC_1 },
{ 60, D3D12_VIDEO_ENCODER_LEVELS_HEVC_2 },
{ 63, D3D12_VIDEO_ENCODER_LEVELS_HEVC_21 },
{ 90, D3D12_VIDEO_ENCODER_LEVELS_HEVC_3 },
{ 93, D3D12_VIDEO_ENCODER_LEVELS_HEVC_31 },
{ 120, D3D12_VIDEO_ENCODER_LEVELS_HEVC_4 },
{ 123, D3D12_VIDEO_ENCODER_LEVELS_HEVC_41 },
{ 150, D3D12_VIDEO_ENCODER_LEVELS_HEVC_5 },
{ 153, D3D12_VIDEO_ENCODER_LEVELS_HEVC_51 },
{ 156, D3D12_VIDEO_ENCODER_LEVELS_HEVC_52 },
{ 180, D3D12_VIDEO_ENCODER_LEVELS_HEVC_6 },
{ 183, D3D12_VIDEO_ENCODER_LEVELS_HEVC_61 },
{ 186, D3D12_VIDEO_ENCODER_LEVELS_HEVC_62 },
};
static const D3D12_VIDEO_ENCODER_PROFILE_HEVC profile_main = D3D12_VIDEO_ENCODER_PROFILE_HEVC_MAIN;
static const D3D12_VIDEO_ENCODER_PROFILE_HEVC profile_main10 = D3D12_VIDEO_ENCODER_PROFILE_HEVC_MAIN10;
#define D3D_PROFILE_DESC(name) \
{ sizeof(D3D12_VIDEO_ENCODER_PROFILE_HEVC), { .pHEVCProfile = (D3D12_VIDEO_ENCODER_PROFILE_HEVC *)&profile_ ## name } }
static const D3D12VAEncodeProfile d3d12va_encode_hevc_profiles[] = {
{ AV_PROFILE_HEVC_MAIN, 8, 3, 1, 1, D3D_PROFILE_DESC(main) },
{ AV_PROFILE_HEVC_MAIN_10, 10, 3, 1, 1, D3D_PROFILE_DESC(main10) },
{ AV_PROFILE_UNKNOWN },
};
static uint8_t d3d12va_encode_hevc_map_cusize(D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_CUSIZE cusize)
{
switch (cusize) {
case D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_CUSIZE_8x8: return 8;
case D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_CUSIZE_16x16: return 16;
case D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_CUSIZE_32x32: return 32;
case D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_CUSIZE_64x64: return 64;
default: av_assert0(0);
}
return 0;
}
static uint8_t d3d12va_encode_hevc_map_tusize(D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_TUSIZE tusize)
{
switch (tusize) {
case D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_TUSIZE_4x4: return 4;
case D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_TUSIZE_8x8: return 8;
case D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_TUSIZE_16x16: return 16;
case D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_TUSIZE_32x32: return 32;
default: av_assert0(0);
}
return 0;
}
static int d3d12va_encode_hevc_write_access_unit(AVCodecContext *avctx,
char *data, size_t *data_len,
CodedBitstreamFragment *au)
{
D3D12VAEncodeHEVCContext *priv = avctx->priv_data;
int err;
err = ff_cbs_write_fragment_data(priv->cbc, au);
if (err < 0) {
av_log(avctx, AV_LOG_ERROR, "Failed to write packed header.\n");
return err;
}
if (*data_len < 8 * au->data_size - au->data_bit_padding) {
av_log(avctx, AV_LOG_ERROR, "Access unit too large: "
"%zu < %zu.\n", *data_len,
8 * au->data_size - au->data_bit_padding);
return AVERROR(ENOSPC);
}
memcpy(data, au->data, au->data_size);
*data_len = 8 * au->data_size - au->data_bit_padding;
return 0;
}
static int d3d12va_encode_hevc_add_nal(AVCodecContext *avctx,
CodedBitstreamFragment *au,
void *nal_unit)
{
H265RawNALUnitHeader *header = nal_unit;
int err;
err = ff_cbs_insert_unit_content(au, -1,
header->nal_unit_type, nal_unit, NULL);
if (err < 0) {
av_log(avctx, AV_LOG_ERROR, "Failed to add NAL unit: "
"type = %d.\n", header->nal_unit_type);
return err;
}
return 0;
}
static int d3d12va_encode_hevc_write_sequence_header(AVCodecContext *avctx,
char *data, size_t *data_len)
{
D3D12VAEncodeHEVCContext *priv = avctx->priv_data;
CodedBitstreamFragment *au = &priv->current_access_unit;
int err;
err = d3d12va_encode_hevc_add_nal(avctx, au, &priv->units.raw_vps);
if (err < 0)
goto fail;
err = d3d12va_encode_hevc_add_nal(avctx, au, &priv->units.raw_sps);
if (err < 0)
goto fail;
err = d3d12va_encode_hevc_add_nal(avctx, au, &priv->units.raw_pps);
if (err < 0)
goto fail;
err = d3d12va_encode_hevc_write_access_unit(avctx, data, data_len, au);
fail:
ff_cbs_fragment_reset(au);
return err;
}
static int d3d12va_encode_hevc_init_sequence_params(AVCodecContext *avctx)
{
FFHWBaseEncodeContext *base_ctx = avctx->priv_data;
D3D12VAEncodeContext *ctx = avctx->priv_data;
D3D12VAEncodeHEVCContext *priv = avctx->priv_data;
AVD3D12VAFramesContext *hwctx = base_ctx->input_frames->hwctx;
H265RawSPS *sps = &priv->units.raw_sps;
H265RawPPS *pps = &priv->units.raw_pps;
D3D12_VIDEO_ENCODER_PROFILE_HEVC profile = D3D12_VIDEO_ENCODER_PROFILE_HEVC_MAIN;
D3D12_VIDEO_ENCODER_LEVEL_TIER_CONSTRAINTS_HEVC level = { 0 };
const AVPixFmtDescriptor *desc;
uint8_t min_cu_size, max_cu_size, min_tu_size, max_tu_size;
HRESULT hr;
int err;
D3D12_FEATURE_DATA_VIDEO_ENCODER_SUPPORT support = {
.NodeIndex = 0,
.Codec = D3D12_VIDEO_ENCODER_CODEC_HEVC,
.InputFormat = hwctx->format,
.RateControl = ctx->rc,
.IntraRefresh = D3D12_VIDEO_ENCODER_INTRA_REFRESH_MODE_NONE,
.SubregionFrameEncoding = D3D12_VIDEO_ENCODER_FRAME_SUBREGION_LAYOUT_MODE_FULL_FRAME,
.ResolutionsListCount = 1,
.pResolutionList = &ctx->resolution,
.CodecGopSequence = ctx->gop,
.MaxReferenceFramesInDPB = MAX_DPB_SIZE - 1,
.CodecConfiguration = ctx->codec_conf,
.SuggestedProfile.DataSize = sizeof(D3D12_VIDEO_ENCODER_PROFILE_HEVC),
.SuggestedProfile.pHEVCProfile = &profile,
.SuggestedLevel.DataSize = sizeof(D3D12_VIDEO_ENCODER_LEVEL_TIER_CONSTRAINTS_HEVC),
.SuggestedLevel.pHEVCLevelSetting = &level,
.pResolutionDependentSupport = &ctx->res_limits,
};
hr = ID3D12VideoDevice3_CheckFeatureSupport(ctx->video_device3, D3D12_FEATURE_VIDEO_ENCODER_SUPPORT,
&support, sizeof(support));
if (FAILED(hr)) {
av_log(avctx, AV_LOG_ERROR, "Failed to check encoder support(%lx).\n", (long)hr);
return AVERROR(EINVAL);
}
if (!(support.SupportFlags & D3D12_VIDEO_ENCODER_SUPPORT_FLAG_GENERAL_SUPPORT_OK)) {
av_log(avctx, AV_LOG_ERROR, "Driver does not support some request features. %#x\n",
support.ValidationFlags);
return AVERROR(EINVAL);
}
if (support.SupportFlags & D3D12_VIDEO_ENCODER_SUPPORT_FLAG_RECONSTRUCTED_FRAMES_REQUIRE_TEXTURE_ARRAYS) {
ctx->is_texture_array = 1;
av_log(avctx, AV_LOG_DEBUG, "D3D12 video encode on this device uses texture array mode.\n");
}
desc = av_pix_fmt_desc_get(base_ctx->input_frames->sw_format);
av_assert0(desc);
min_cu_size = d3d12va_encode_hevc_map_cusize(ctx->codec_conf.pHEVCConfig->MinLumaCodingUnitSize);
max_cu_size = d3d12va_encode_hevc_map_cusize(ctx->codec_conf.pHEVCConfig->MaxLumaCodingUnitSize);
min_tu_size = d3d12va_encode_hevc_map_tusize(ctx->codec_conf.pHEVCConfig->MinLumaTransformUnitSize);
max_tu_size = d3d12va_encode_hevc_map_tusize(ctx->codec_conf.pHEVCConfig->MaxLumaTransformUnitSize);
// cu_qp_delta always required to be 1 in https://github.com/microsoft/DirectX-Specs/blob/master/d3d/D3D12VideoEncoding.md
priv->unit_opts.cu_qp_delta_enabled_flag = 1;
priv->unit_opts.nb_slices = 1;
err = ff_hw_base_encode_init_params_h265(base_ctx, avctx,
&priv->units, &priv->unit_opts);
if (err < 0)
return err;
avctx->level = priv->units.raw_vps.profile_tier_level.general_level_idc;
av_assert0(ctx->res_limits.SubregionBlockPixelsSize % min_cu_size == 0);
sps->pic_width_in_luma_samples = FFALIGN(base_ctx->surface_width,
ctx->res_limits.SubregionBlockPixelsSize);
sps->pic_height_in_luma_samples = FFALIGN(base_ctx->surface_height,
ctx->res_limits.SubregionBlockPixelsSize);
if (avctx->width != sps->pic_width_in_luma_samples ||
avctx->height != sps->pic_height_in_luma_samples) {
sps->conformance_window_flag = 1;
sps->conf_win_left_offset = 0;
sps->conf_win_right_offset =
(sps->pic_width_in_luma_samples - avctx->width) >> desc->log2_chroma_w;
sps->conf_win_top_offset = 0;
sps->conf_win_bottom_offset =
(sps->pic_height_in_luma_samples - avctx->height) >> desc->log2_chroma_h;
} else {
sps->conformance_window_flag = 0;
}
sps->log2_max_pic_order_cnt_lsb_minus4 = ctx->gop.pHEVCGroupOfPictures->log2_max_pic_order_cnt_lsb_minus4;
sps->log2_min_luma_coding_block_size_minus3 = (uint8_t)(av_log2(min_cu_size) - 3);
sps->log2_diff_max_min_luma_coding_block_size = (uint8_t)(av_log2(max_cu_size) - av_log2(min_cu_size));
sps->log2_min_luma_transform_block_size_minus2 = (uint8_t)(av_log2(min_tu_size) - 2);
sps->log2_diff_max_min_luma_transform_block_size = (uint8_t)(av_log2(max_tu_size) - av_log2(min_tu_size));
sps->max_transform_hierarchy_depth_inter = ctx->codec_conf.pHEVCConfig->max_transform_hierarchy_depth_inter;
sps->max_transform_hierarchy_depth_intra = ctx->codec_conf.pHEVCConfig->max_transform_hierarchy_depth_intra;
sps->amp_enabled_flag = !!(ctx->codec_conf.pHEVCConfig->ConfigurationFlags &
D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_FLAG_USE_ASYMETRIC_MOTION_PARTITION);
sps->sample_adaptive_offset_enabled_flag = !!(ctx->codec_conf.pHEVCConfig->ConfigurationFlags &
D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_FLAG_ENABLE_SAO_FILTER);
pps->cabac_init_present_flag = 1;
pps->init_qp_minus26 = 0;
pps->transform_skip_enabled_flag = !!(ctx->codec_conf.pHEVCConfig->ConfigurationFlags &
D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_FLAG_ENABLE_TRANSFORM_SKIPPING);
pps->pps_slice_chroma_qp_offsets_present_flag = 1;
pps->tiles_enabled_flag = 0; // no tiling in D3D12
pps->pps_loop_filter_across_slices_enabled_flag = !(ctx->codec_conf.pHEVCConfig->ConfigurationFlags &
D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_FLAG_DISABLE_LOOP_FILTER_ACROSS_SLICES);
pps->deblocking_filter_control_present_flag = 1;
return 0;
}
static int d3d12va_encode_hevc_get_encoder_caps(AVCodecContext *avctx)
{
int i;
HRESULT hr;
uint8_t min_cu_size, max_cu_size;
FFHWBaseEncodeContext *base_ctx = avctx->priv_data;
D3D12VAEncodeContext *ctx = avctx->priv_data;
D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC *config;
D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_SUPPORT_HEVC hevc_caps;
D3D12_FEATURE_DATA_VIDEO_ENCODER_CODEC_CONFIGURATION_SUPPORT codec_caps = {
.NodeIndex = 0,
.Codec = D3D12_VIDEO_ENCODER_CODEC_HEVC,
.Profile = ctx->profile->d3d12_profile,
.CodecSupportLimits.DataSize = sizeof(D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_SUPPORT_HEVC),
};
for (i = 0; i < FF_ARRAY_ELEMS(hevc_config_support_sets); i++) {
hevc_caps = hevc_config_support_sets[i];
codec_caps.CodecSupportLimits.pHEVCSupport = &hevc_caps;
hr = ID3D12VideoDevice3_CheckFeatureSupport(ctx->video_device3, D3D12_FEATURE_VIDEO_ENCODER_CODEC_CONFIGURATION_SUPPORT,
&codec_caps, sizeof(codec_caps));
if (SUCCEEDED(hr) && codec_caps.IsSupported)
break;
}
if (i == FF_ARRAY_ELEMS(hevc_config_support_sets)) {
av_log(avctx, AV_LOG_ERROR, "Unsupported codec configuration\n");
return AVERROR(EINVAL);
}
ctx->codec_conf.DataSize = sizeof(D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC);
ctx->codec_conf.pHEVCConfig = av_mallocz(ctx->codec_conf.DataSize);
if (!ctx->codec_conf.pHEVCConfig)
return AVERROR(ENOMEM);
config = ctx->codec_conf.pHEVCConfig;
config->ConfigurationFlags = D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_FLAG_NONE;
config->MinLumaCodingUnitSize = hevc_caps.MinLumaCodingUnitSize;
config->MaxLumaCodingUnitSize = hevc_caps.MaxLumaCodingUnitSize;
config->MinLumaTransformUnitSize = hevc_caps.MinLumaTransformUnitSize;
config->MaxLumaTransformUnitSize = hevc_caps.MaxLumaTransformUnitSize;
config->max_transform_hierarchy_depth_inter = hevc_caps.max_transform_hierarchy_depth_inter;
config->max_transform_hierarchy_depth_intra = hevc_caps.max_transform_hierarchy_depth_intra;
if (hevc_caps.SupportFlags & D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_SUPPORT_HEVC_FLAG_ASYMETRIC_MOTION_PARTITION_SUPPORT ||
hevc_caps.SupportFlags & D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_SUPPORT_HEVC_FLAG_ASYMETRIC_MOTION_PARTITION_REQUIRED)
config->ConfigurationFlags |= D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_FLAG_USE_ASYMETRIC_MOTION_PARTITION;
if (hevc_caps.SupportFlags & D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_SUPPORT_HEVC_FLAG_SAO_FILTER_SUPPORT)
config->ConfigurationFlags |= D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_FLAG_ENABLE_SAO_FILTER;
if (hevc_caps.SupportFlags & D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_SUPPORT_HEVC_FLAG_DISABLING_LOOP_FILTER_ACROSS_SLICES_SUPPORT)
config->ConfigurationFlags |= D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_FLAG_DISABLE_LOOP_FILTER_ACROSS_SLICES;
if (hevc_caps.SupportFlags & D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_SUPPORT_HEVC_FLAG_TRANSFORM_SKIP_SUPPORT)
config->ConfigurationFlags |= D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_FLAG_ENABLE_TRANSFORM_SKIPPING;
if (hevc_caps.SupportFlags & D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_SUPPORT_HEVC_FLAG_P_FRAMES_IMPLEMENTED_AS_LOW_DELAY_B_FRAMES)
ctx->bi_not_empty = 1;
// block sizes
min_cu_size = d3d12va_encode_hevc_map_cusize(hevc_caps.MinLumaCodingUnitSize);
max_cu_size = d3d12va_encode_hevc_map_cusize(hevc_caps.MaxLumaCodingUnitSize);
av_log(avctx, AV_LOG_VERBOSE, "Using CTU size %dx%d, "
"min CB size %dx%d.\n", max_cu_size, max_cu_size,
min_cu_size, min_cu_size);
base_ctx->surface_width = FFALIGN(avctx->width, min_cu_size);
base_ctx->surface_height = FFALIGN(avctx->height, min_cu_size);
return 0;
}
static int d3d12va_encode_hevc_configure(AVCodecContext *avctx)
{
FFHWBaseEncodeContext *base_ctx = avctx->priv_data;
D3D12VAEncodeContext *ctx = avctx->priv_data;
D3D12VAEncodeHEVCContext *priv = avctx->priv_data;
int fixed_qp_idr, fixed_qp_p, fixed_qp_b;
int err;
err = ff_cbs_init(&priv->cbc, AV_CODEC_ID_HEVC, avctx);
if (err < 0)
return err;
// Rate control
if (ctx->rc.Mode == D3D12_VIDEO_ENCODER_RATE_CONTROL_MODE_CQP) {
D3D12_VIDEO_ENCODER_RATE_CONTROL_CQP *cqp_ctl;
fixed_qp_p = av_clip(ctx->rc_quality, 1, 51);
if (avctx->i_quant_factor > 0.0)
fixed_qp_idr = av_clip((avctx->i_quant_factor * fixed_qp_p +
avctx->i_quant_offset) + 0.5, 1, 51);
else
fixed_qp_idr = fixed_qp_p;
if (avctx->b_quant_factor > 0.0)
fixed_qp_b = av_clip((avctx->b_quant_factor * fixed_qp_p +
avctx->b_quant_offset) + 0.5, 1, 51);
else
fixed_qp_b = fixed_qp_p;
av_log(avctx, AV_LOG_DEBUG, "Using fixed QP = "
"%d / %d / %d for IDR- / P- / B-frames.\n",
fixed_qp_idr, fixed_qp_p, fixed_qp_b);
ctx->rc.ConfigParams.DataSize = sizeof(D3D12_VIDEO_ENCODER_RATE_CONTROL_CQP);
cqp_ctl = av_mallocz(ctx->rc.ConfigParams.DataSize);
if (!cqp_ctl)
return AVERROR(ENOMEM);
cqp_ctl->ConstantQP_FullIntracodedFrame = fixed_qp_idr;
cqp_ctl->ConstantQP_InterPredictedFrame_PrevRefOnly = fixed_qp_p;
cqp_ctl->ConstantQP_InterPredictedFrame_BiDirectionalRef = fixed_qp_b;
ctx->rc.ConfigParams.pConfiguration_CQP = cqp_ctl;
}
// GOP
ctx->gop.DataSize = sizeof(D3D12_VIDEO_ENCODER_SEQUENCE_GOP_STRUCTURE_HEVC);
ctx->gop.pHEVCGroupOfPictures = av_mallocz(ctx->gop.DataSize);
if (!ctx->gop.pHEVCGroupOfPictures)
return AVERROR(ENOMEM);
ctx->gop.pHEVCGroupOfPictures->GOPLength = base_ctx->gop_size;
ctx->gop.pHEVCGroupOfPictures->PPicturePeriod = base_ctx->b_per_p + 1;
// Power of 2
if (base_ctx->gop_size & base_ctx->gop_size - 1 == 0)
ctx->gop.pHEVCGroupOfPictures->log2_max_pic_order_cnt_lsb_minus4 =
FFMAX(av_log2(base_ctx->gop_size) - 4, 0);
else
ctx->gop.pHEVCGroupOfPictures->log2_max_pic_order_cnt_lsb_minus4 =
FFMAX(av_log2(base_ctx->gop_size) - 3, 0);
return 0;
}
static int d3d12va_encode_hevc_set_level(AVCodecContext *avctx)
{
D3D12VAEncodeContext *ctx = avctx->priv_data;
D3D12VAEncodeHEVCContext *priv = avctx->priv_data;
int i;
ctx->level.DataSize = sizeof(D3D12_VIDEO_ENCODER_LEVEL_TIER_CONSTRAINTS_HEVC);
ctx->level.pHEVCLevelSetting = av_mallocz(ctx->level.DataSize);
if (!ctx->level.pHEVCLevelSetting)
return AVERROR(ENOMEM);
for (i = 0; i < FF_ARRAY_ELEMS(hevc_levels); i++) {
if (avctx->level == hevc_levels[i].level) {
ctx->level.pHEVCLevelSetting->Level = hevc_levels[i].d3d12_level;
break;
}
}
if (i == FF_ARRAY_ELEMS(hevc_levels)) {
av_log(avctx, AV_LOG_ERROR, "Invalid level %d.\n", avctx->level);
return AVERROR(EINVAL);
}
ctx->level.pHEVCLevelSetting->Tier = priv->units.raw_vps.profile_tier_level.general_tier_flag == 0 ?
D3D12_VIDEO_ENCODER_TIER_HEVC_MAIN :
D3D12_VIDEO_ENCODER_TIER_HEVC_HIGH;
return 0;
}
static void d3d12va_encode_hevc_free_picture_params(D3D12VAEncodePicture *pic)
{
if (!pic->pic_ctl.pHEVCPicData)
return;
av_freep(&pic->pic_ctl.pHEVCPicData->pList0ReferenceFrames);
av_freep(&pic->pic_ctl.pHEVCPicData->pList1ReferenceFrames);
av_freep(&pic->pic_ctl.pHEVCPicData->pReferenceFramesReconPictureDescriptors);
av_freep(&pic->pic_ctl.pHEVCPicData);
}
static int d3d12va_encode_hevc_init_picture_params(AVCodecContext *avctx,
FFHWBaseEncodePicture *base_pic)
{
D3D12VAEncodePicture *pic = base_pic->priv;
D3D12VAEncodeHEVCPicture *hpic = base_pic->codec_priv;
FFHWBaseEncodePicture *prev = base_pic->prev;
D3D12VAEncodeHEVCPicture *hprev = prev ? prev->codec_priv : NULL;
D3D12_VIDEO_ENCODER_REFERENCE_PICTURE_DESCRIPTOR_HEVC *pd = NULL;
UINT *ref_list0 = NULL, *ref_list1 = NULL;
int i, idx = 0;
pic->pic_ctl.DataSize = sizeof(D3D12_VIDEO_ENCODER_PICTURE_CONTROL_CODEC_DATA_HEVC);
pic->pic_ctl.pHEVCPicData = av_mallocz(pic->pic_ctl.DataSize);
if (!pic->pic_ctl.pHEVCPicData)
return AVERROR(ENOMEM);
if (base_pic->type == FF_HW_PICTURE_TYPE_IDR) {
av_assert0(base_pic->display_order == base_pic->encode_order);
hpic->last_idr_frame = base_pic->display_order;
} else {
av_assert0(prev);
hpic->last_idr_frame = hprev->last_idr_frame;
}
hpic->pic_order_cnt = base_pic->display_order - hpic->last_idr_frame;
switch(base_pic->type) {
case FF_HW_PICTURE_TYPE_IDR:
pic->pic_ctl.pHEVCPicData->FrameType = D3D12_VIDEO_ENCODER_FRAME_TYPE_HEVC_IDR_FRAME;
break;
case FF_HW_PICTURE_TYPE_I:
pic->pic_ctl.pHEVCPicData->FrameType = D3D12_VIDEO_ENCODER_FRAME_TYPE_HEVC_I_FRAME;
break;
case FF_HW_PICTURE_TYPE_P:
pic->pic_ctl.pHEVCPicData->FrameType = D3D12_VIDEO_ENCODER_FRAME_TYPE_HEVC_P_FRAME;
break;
case FF_HW_PICTURE_TYPE_B:
pic->pic_ctl.pHEVCPicData->FrameType = D3D12_VIDEO_ENCODER_FRAME_TYPE_HEVC_B_FRAME;
break;
default:
av_assert0(0 && "invalid picture type");
}
pic->pic_ctl.pHEVCPicData->slice_pic_parameter_set_id = 0;
pic->pic_ctl.pHEVCPicData->PictureOrderCountNumber = hpic->pic_order_cnt;
if (base_pic->type == FF_HW_PICTURE_TYPE_P || base_pic->type == FF_HW_PICTURE_TYPE_B) {
pd = av_calloc(MAX_PICTURE_REFERENCES, sizeof(*pd));
if (!pd)
return AVERROR(ENOMEM);
ref_list0 = av_calloc(MAX_PICTURE_REFERENCES, sizeof(*ref_list0));
if (!ref_list0)
return AVERROR(ENOMEM);
pic->pic_ctl.pHEVCPicData->List0ReferenceFramesCount = base_pic->nb_refs[0];
for (i = 0; i < base_pic->nb_refs[0]; i++) {
FFHWBaseEncodePicture *ref = base_pic->refs[0][i];
D3D12VAEncodeHEVCPicture *href;
av_assert0(ref && ref->encode_order < base_pic->encode_order);
href = ref->codec_priv;
ref_list0[i] = idx;
pd[idx].ReconstructedPictureResourceIndex = idx;
pd[idx].IsRefUsedByCurrentPic = TRUE;
pd[idx].PictureOrderCountNumber = href->pic_order_cnt;
idx++;
}
}
if (base_pic->type == FF_HW_PICTURE_TYPE_B) {
ref_list1 = av_calloc(MAX_PICTURE_REFERENCES, sizeof(*ref_list1));
if (!ref_list1)
return AVERROR(ENOMEM);
pic->pic_ctl.pHEVCPicData->List1ReferenceFramesCount = base_pic->nb_refs[1];
for (i = 0; i < base_pic->nb_refs[1]; i++) {
FFHWBaseEncodePicture *ref = base_pic->refs[1][i];
D3D12VAEncodeHEVCPicture *href;
av_assert0(ref && ref->encode_order < base_pic->encode_order);
href = ref->codec_priv;
ref_list1[i] = idx;
pd[idx].ReconstructedPictureResourceIndex = idx;
pd[idx].IsRefUsedByCurrentPic = TRUE;
pd[idx].PictureOrderCountNumber = href->pic_order_cnt;
idx++;
}
}
pic->pic_ctl.pHEVCPicData->pList0ReferenceFrames = ref_list0;
pic->pic_ctl.pHEVCPicData->pList1ReferenceFrames = ref_list1;
pic->pic_ctl.pHEVCPicData->ReferenceFramesReconPictureDescriptorsCount = idx;
pic->pic_ctl.pHEVCPicData->pReferenceFramesReconPictureDescriptors = pd;
return 0;
}
static const D3D12VAEncodeType d3d12va_encode_type_hevc = {
.profiles = d3d12va_encode_hevc_profiles,
.d3d12_codec = D3D12_VIDEO_ENCODER_CODEC_HEVC,
.flags = FF_HW_FLAG_B_PICTURES |
FF_HW_FLAG_B_PICTURE_REFERENCES |
FF_HW_FLAG_NON_IDR_KEY_PICTURES,
.default_quality = 25,
.get_encoder_caps = &d3d12va_encode_hevc_get_encoder_caps,
.configure = &d3d12va_encode_hevc_configure,
.set_level = &d3d12va_encode_hevc_set_level,
.picture_priv_data_size = sizeof(D3D12VAEncodeHEVCPicture),
.init_sequence_params = &d3d12va_encode_hevc_init_sequence_params,
.init_picture_params = &d3d12va_encode_hevc_init_picture_params,
.free_picture_params = &d3d12va_encode_hevc_free_picture_params,
.write_sequence_header = &d3d12va_encode_hevc_write_sequence_header,
};
static int d3d12va_encode_hevc_init(AVCodecContext *avctx)
{
D3D12VAEncodeContext *ctx = avctx->priv_data;
D3D12VAEncodeHEVCContext *priv = avctx->priv_data;
ctx->codec = &d3d12va_encode_type_hevc;
if (avctx->profile == AV_PROFILE_UNKNOWN)
avctx->profile = priv->profile;
if (avctx->level == AV_LEVEL_UNKNOWN)
avctx->level = priv->level;
if (avctx->level != AV_LEVEL_UNKNOWN && avctx->level & ~0xff) {
av_log(avctx, AV_LOG_ERROR, "Invalid level %d: must fit "
"in 8-bit unsigned integer.\n", avctx->level);
return AVERROR(EINVAL);
}
if (priv->qp > 0)
ctx->explicit_qp = priv->qp;
return ff_d3d12va_encode_init(avctx);
}
static int d3d12va_encode_hevc_close(AVCodecContext *avctx)
{
D3D12VAEncodeHEVCContext *priv = avctx->priv_data;
ff_cbs_fragment_free(&priv->current_access_unit);
ff_cbs_close(&priv->cbc);
av_freep(&priv->common.codec_conf.pHEVCConfig);
av_freep(&priv->common.gop.pHEVCGroupOfPictures);
av_freep(&priv->common.level.pHEVCLevelSetting);
return ff_d3d12va_encode_close(avctx);
}
#define OFFSET(x) offsetof(D3D12VAEncodeHEVCContext, x)
#define FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM)
static const AVOption d3d12va_encode_hevc_options[] = {
HW_BASE_ENCODE_COMMON_OPTIONS,
D3D12VA_ENCODE_COMMON_OPTIONS,
D3D12VA_ENCODE_RC_OPTIONS,
{ "qp", "Constant QP (for P-frames; scaled by qfactor/qoffset for I/B)",
OFFSET(qp), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 52, FLAGS },
{ "profile", "Set profile (general_profile_idc)",
OFFSET(profile), AV_OPT_TYPE_INT,
{ .i64 = AV_PROFILE_UNKNOWN }, AV_PROFILE_UNKNOWN, 0xff, FLAGS, "profile" },
#define PROFILE(name, value) name, NULL, 0, AV_OPT_TYPE_CONST, \
{ .i64 = value }, 0, 0, FLAGS, "profile"
{ PROFILE("main", AV_PROFILE_HEVC_MAIN) },
{ PROFILE("main10", AV_PROFILE_HEVC_MAIN_10) },
#undef PROFILE
{ "tier", "Set tier (general_tier_flag)",
OFFSET(unit_opts.tier), AV_OPT_TYPE_INT,
{ .i64 = 0 }, 0, 1, FLAGS, "tier" },
{ "main", NULL, 0, AV_OPT_TYPE_CONST,
{ .i64 = 0 }, 0, 0, FLAGS, "tier" },
{ "high", NULL, 0, AV_OPT_TYPE_CONST,
{ .i64 = 1 }, 0, 0, FLAGS, "tier" },
{ "level", "Set level (general_level_idc)",
OFFSET(level), AV_OPT_TYPE_INT,
{ .i64 = AV_LEVEL_UNKNOWN }, AV_LEVEL_UNKNOWN, 0xff, FLAGS, "level" },
#define LEVEL(name, value) name, NULL, 0, AV_OPT_TYPE_CONST, \
{ .i64 = value }, 0, 0, FLAGS, "level"
{ LEVEL("1", 30) },
{ LEVEL("2", 60) },
{ LEVEL("2.1", 63) },
{ LEVEL("3", 90) },
{ LEVEL("3.1", 93) },
{ LEVEL("4", 120) },
{ LEVEL("4.1", 123) },
{ LEVEL("5", 150) },
{ LEVEL("5.1", 153) },
{ LEVEL("5.2", 156) },
{ LEVEL("6", 180) },
{ LEVEL("6.1", 183) },
{ LEVEL("6.2", 186) },
#undef LEVEL
{ NULL },
};
static const FFCodecDefault d3d12va_encode_hevc_defaults[] = {
{ "b", "0" },
{ "bf", "2" },
{ "g", "120" },
{ "i_qfactor", "1" },
{ "i_qoffset", "0" },
{ "b_qfactor", "1" },
{ "b_qoffset", "0" },
{ "qmin", "-1" },
{ "qmax", "-1" },
{ "refs", "0" },
{ NULL },
};
static const AVClass d3d12va_encode_hevc_class = {
.class_name = "hevc_d3d12va",
.item_name = av_default_item_name,
.option = d3d12va_encode_hevc_options,
.version = LIBAVUTIL_VERSION_INT,
};
const FFCodec ff_hevc_d3d12va_encoder = {
.p.name = "hevc_d3d12va",
CODEC_LONG_NAME("D3D12VA hevc encoder"),
.p.type = AVMEDIA_TYPE_VIDEO,
.p.id = AV_CODEC_ID_HEVC,
.priv_data_size = sizeof(D3D12VAEncodeHEVCContext),
.init = &d3d12va_encode_hevc_init,
FF_CODEC_RECEIVE_PACKET_CB(&ff_d3d12va_encode_receive_packet),
.close = &d3d12va_encode_hevc_close,
.p.priv_class = &d3d12va_encode_hevc_class,
.p.capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_HARDWARE |
AV_CODEC_CAP_DR1 | AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,
.caps_internal = FF_CODEC_CAP_NOT_INIT_THREADSAFE |
FF_CODEC_CAP_INIT_CLEANUP,
.defaults = d3d12va_encode_hevc_defaults,
CODEC_PIXFMTS(AV_PIX_FMT_D3D12),
.hw_configs = ff_d3d12va_encode_hw_configs,
.p.wrapper_name = "d3d12va",
};
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