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FFmpeg/libavcodec/vaapi_encode_h265.c

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/*
* This file is part of Libav.
*
* Libav 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.
*
* Libav 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 Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <string.h>
#include <va/va.h>
#include <va/va_enc_hevc.h>
#include "libavutil/avassert.h"
#include "libavutil/common.h"
#include "libavutil/opt.h"
#include "avcodec.h"
#include "cbs.h"
#include "cbs_h265.h"
#include "hevc.h"
#include "internal.h"
#include "put_bits.h"
#include "vaapi_encode.h"
typedef struct VAAPIEncodeH265Context {
unsigned int ctu_width;
unsigned int ctu_height;
int fixed_qp_idr;
int fixed_qp_p;
int fixed_qp_b;
H265RawAUD aud;
H265RawVPS vps;
H265RawSPS sps;
H265RawPPS pps;
H265RawSlice slice;
int64_t last_idr_frame;
int pic_order_cnt;
int slice_nal_unit;
int slice_type;
int pic_type;
CodedBitstreamContext cbc;
CodedBitstreamFragment current_access_unit;
int aud_needed;
} VAAPIEncodeH265Context;
typedef struct VAAPIEncodeH265Options {
int qp;
int aud;
} VAAPIEncodeH265Options;
static int vaapi_encode_h265_write_access_unit(AVCodecContext *avctx,
char *data, size_t *data_len,
CodedBitstreamFragment *au)
{
VAAPIEncodeContext *ctx = avctx->priv_data;
VAAPIEncodeH265Context *priv = ctx->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 vaapi_encode_h265_add_nal(AVCodecContext *avctx,
CodedBitstreamFragment *au,
void *nal_unit)
{
VAAPIEncodeContext *ctx = avctx->priv_data;
VAAPIEncodeH265Context *priv = ctx->priv_data;
H265RawNALUnitHeader *header = nal_unit;
int err;
err = ff_cbs_insert_unit_content(&priv->cbc, au, -1,
header->nal_unit_type, nal_unit);
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 vaapi_encode_h265_write_sequence_header(AVCodecContext *avctx,
char *data, size_t *data_len)
{
VAAPIEncodeContext *ctx = avctx->priv_data;
VAAPIEncodeH265Context *priv = ctx->priv_data;
CodedBitstreamFragment *au = &priv->current_access_unit;
int err;
if (priv->aud_needed) {
err = vaapi_encode_h265_add_nal(avctx, au, &priv->aud);
if (err < 0)
goto fail;
priv->aud_needed = 0;
}
err = vaapi_encode_h265_add_nal(avctx, au, &priv->vps);
if (err < 0)
goto fail;
err = vaapi_encode_h265_add_nal(avctx, au, &priv->sps);
if (err < 0)
goto fail;
err = vaapi_encode_h265_add_nal(avctx, au, &priv->pps);
if (err < 0)
goto fail;
err = vaapi_encode_h265_write_access_unit(avctx, data, data_len, au);
fail:
ff_cbs_fragment_uninit(&priv->cbc, au);
return err;
}
static int vaapi_encode_h265_write_slice_header(AVCodecContext *avctx,
VAAPIEncodePicture *pic,
VAAPIEncodeSlice *slice,
char *data, size_t *data_len)
{
VAAPIEncodeContext *ctx = avctx->priv_data;
VAAPIEncodeH265Context *priv = ctx->priv_data;
CodedBitstreamFragment *au = &priv->current_access_unit;
int err;
if (priv->aud_needed) {
err = vaapi_encode_h265_add_nal(avctx, au, &priv->aud);
if (err < 0)
goto fail;
priv->aud_needed = 0;
}
err = vaapi_encode_h265_add_nal(avctx, au, &priv->slice);
if (err < 0)
goto fail;
err = vaapi_encode_h265_write_access_unit(avctx, data, data_len, au);
fail:
ff_cbs_fragment_uninit(&priv->cbc, au);
return err;
}
static int vaapi_encode_h265_init_sequence_params(AVCodecContext *avctx)
{
VAAPIEncodeContext *ctx = avctx->priv_data;
VAAPIEncodeH265Context *priv = ctx->priv_data;
H265RawVPS *vps = &priv->vps;
H265RawSPS *sps = &priv->sps;
H265RawPPS *pps = &priv->pps;
H265RawVUI *vui = &sps->vui;
VAEncSequenceParameterBufferHEVC *vseq = ctx->codec_sequence_params;
VAEncPictureParameterBufferHEVC *vpic = ctx->codec_picture_params;
int i;
memset(&priv->current_access_unit, 0,
sizeof(priv->current_access_unit));
memset(vps, 0, sizeof(*vps));
memset(sps, 0, sizeof(*sps));
memset(pps, 0, sizeof(*pps));
// VPS
vps->nal_unit_header = (H265RawNALUnitHeader) {
.nal_unit_type = HEVC_NAL_VPS,
.nuh_layer_id = 0,
.nuh_temporal_id_plus1 = 1,
};
vps->vps_video_parameter_set_id = 0;
vps->vps_base_layer_internal_flag = 1;
vps->vps_base_layer_available_flag = 1;
vps->vps_max_layers_minus1 = 0;
vps->vps_max_sub_layers_minus1 = 0;
vps->vps_temporal_id_nesting_flag = 1;
vps->profile_tier_level = (H265RawProfileTierLevel) {
.general_profile_space = 0,
.general_profile_idc = avctx->profile,
.general_tier_flag = 0,
.general_progressive_source_flag = 1,
.general_interlaced_source_flag = 0,
.general_non_packed_constraint_flag = 1,
.general_frame_only_constraint_flag = 1,
.general_level_idc = avctx->level,
};
vps->profile_tier_level.general_profile_compatibility_flag[avctx->profile & 31] = 1;
vps->vps_sub_layer_ordering_info_present_flag = 0;
vps->vps_max_dec_pic_buffering_minus1[0] = (ctx->b_per_p > 0) + 1;
vps->vps_max_num_reorder_pics[0] = (ctx->b_per_p > 0);
vps->vps_max_latency_increase_plus1[0] = 0;
vps->vps_max_layer_id = 0;
vps->vps_num_layer_sets_minus1 = 0;
vps->layer_id_included_flag[0][0] = 1;
vps->vps_timing_info_present_flag = 1;
if (avctx->framerate.num > 0 && avctx->framerate.den > 0) {
vps->vps_num_units_in_tick = avctx->framerate.den;
vps->vps_time_scale = avctx->framerate.num;
vps->vps_poc_proportional_to_timing_flag = 1;
vps->vps_num_ticks_poc_diff_one_minus1 = 0;
} else {
vps->vps_num_units_in_tick = avctx->time_base.num;
vps->vps_time_scale = avctx->time_base.den;
vps->vps_poc_proportional_to_timing_flag = 0;
}
vps->vps_num_hrd_parameters = 0;
// SPS
sps->nal_unit_header = (H265RawNALUnitHeader) {
.nal_unit_type = HEVC_NAL_SPS,
.nuh_layer_id = 0,
.nuh_temporal_id_plus1 = 1,
};
sps->sps_video_parameter_set_id = vps->vps_video_parameter_set_id;
sps->sps_max_sub_layers_minus1 = vps->vps_max_sub_layers_minus1;
sps->sps_temporal_id_nesting_flag = vps->vps_temporal_id_nesting_flag;
sps->profile_tier_level = vps->profile_tier_level;
sps->sps_seq_parameter_set_id = 0;
sps->chroma_format_idc = 1; // YUV 4:2:0.
sps->separate_colour_plane_flag = 0;
sps->pic_width_in_luma_samples = ctx->surface_width;
sps->pic_height_in_luma_samples = ctx->surface_height;
if (avctx->width != ctx->surface_width ||
avctx->height != ctx->surface_height) {
sps->conformance_window_flag = 1;
sps->conf_win_left_offset = 0;
sps->conf_win_right_offset =
(ctx->surface_width - avctx->width) / 2;
sps->conf_win_top_offset = 0;
sps->conf_win_bottom_offset =
(ctx->surface_height - avctx->height) / 2;
} else {
sps->conformance_window_flag = 0;
}
sps->bit_depth_luma_minus8 =
avctx->profile == FF_PROFILE_HEVC_MAIN_10 ? 2 : 0;
sps->bit_depth_chroma_minus8 = sps->bit_depth_luma_minus8;
sps->log2_max_pic_order_cnt_lsb_minus4 = 8;
sps->sps_sub_layer_ordering_info_present_flag =
vps->vps_sub_layer_ordering_info_present_flag;
for (i = 0; i <= sps->sps_max_sub_layers_minus1; i++) {
sps->sps_max_dec_pic_buffering_minus1[i] =
vps->vps_max_dec_pic_buffering_minus1[i];
sps->sps_max_num_reorder_pics[i] =
vps->vps_max_num_reorder_pics[i];
sps->sps_max_latency_increase_plus1[i] =
vps->vps_max_latency_increase_plus1[i];
}
// These have to come from the capabilities of the encoder. We have no
// way to query them, so just hardcode parameters which work on the Intel
// driver.
// CTB size from 8x8 to 32x32.
sps->log2_min_luma_coding_block_size_minus3 = 0;
sps->log2_diff_max_min_luma_coding_block_size = 2;
// Transform size from 4x4 to 32x32.
sps->log2_min_luma_transform_block_size_minus2 = 0;
sps->log2_diff_max_min_luma_transform_block_size = 3;
// Full transform hierarchy allowed (2-5).
sps->max_transform_hierarchy_depth_inter = 3;
sps->max_transform_hierarchy_depth_intra = 3;
// AMP works.
sps->amp_enabled_flag = 1;
// SAO and temporal MVP do not work.
sps->sample_adaptive_offset_enabled_flag = 0;
sps->sps_temporal_mvp_enabled_flag = 0;
sps->pcm_enabled_flag = 0;
// STRPSs should ideally be here rather than defined individually in
// each slice, but the structure isn't completely fixed so for now
// don't bother.
sps->num_short_term_ref_pic_sets = 0;
sps->long_term_ref_pics_present_flag = 0;
sps->vui_parameters_present_flag = 1;
if (avctx->sample_aspect_ratio.num != 0 &&
avctx->sample_aspect_ratio.den != 0) {
static const AVRational sar_idc[] = {
{ 0, 0 },
{ 1, 1 }, { 12, 11 }, { 10, 11 }, { 16, 11 },
{ 40, 33 }, { 24, 11 }, { 20, 11 }, { 32, 11 },
{ 80, 33 }, { 18, 11 }, { 15, 11 }, { 64, 33 },
{ 160, 99 }, { 4, 3 }, { 3, 2 }, { 2, 1 },
};
int i;
for (i = 0; i < FF_ARRAY_ELEMS(sar_idc); i++) {
if (avctx->sample_aspect_ratio.num == sar_idc[i].num &&
avctx->sample_aspect_ratio.den == sar_idc[i].den) {
vui->aspect_ratio_idc = i;
break;
}
}
if (i >= FF_ARRAY_ELEMS(sar_idc)) {
vui->aspect_ratio_idc = 255;
vui->sar_width = avctx->sample_aspect_ratio.num;
vui->sar_height = avctx->sample_aspect_ratio.den;
}
vui->aspect_ratio_info_present_flag = 1;
}
if (avctx->color_range != AVCOL_RANGE_UNSPECIFIED ||
avctx->color_primaries != AVCOL_PRI_UNSPECIFIED ||
avctx->color_trc != AVCOL_TRC_UNSPECIFIED ||
avctx->colorspace != AVCOL_SPC_UNSPECIFIED) {
vui->video_signal_type_present_flag = 1;
vui->video_format = 5; // Unspecified.
vui->video_full_range_flag =
avctx->color_range == AVCOL_RANGE_JPEG;
if (avctx->color_primaries != AVCOL_PRI_UNSPECIFIED ||
avctx->color_trc != AVCOL_TRC_UNSPECIFIED ||
avctx->colorspace != AVCOL_SPC_UNSPECIFIED) {
vui->colour_description_present_flag = 1;
vui->colour_primaries = avctx->color_primaries;
vui->transfer_characteristics = avctx->color_trc;
vui->matrix_coefficients = avctx->colorspace;
}
} else {
vui->video_format = 5;
vui->video_full_range_flag = 0;
vui->colour_primaries = avctx->color_primaries;
vui->transfer_characteristics = avctx->color_trc;
vui->matrix_coefficients = avctx->colorspace;
}
if (avctx->chroma_sample_location != AVCHROMA_LOC_UNSPECIFIED) {
vui->chroma_loc_info_present_flag = 1;
vui->chroma_sample_loc_type_top_field =
vui->chroma_sample_loc_type_bottom_field =
avctx->chroma_sample_location - 1;
}
vui->vui_timing_info_present_flag = 1;
vui->vui_num_units_in_tick = vps->vps_num_units_in_tick;
vui->vui_time_scale = vps->vps_time_scale;
vui->vui_poc_proportional_to_timing_flag = vps->vps_poc_proportional_to_timing_flag;
vui->vui_num_ticks_poc_diff_one_minus1 = vps->vps_num_ticks_poc_diff_one_minus1;
vui->vui_hrd_parameters_present_flag = 0;
vui->bitstream_restriction_flag = 1;
vui->motion_vectors_over_pic_boundaries_flag = 1;
vui->restricted_ref_pic_lists_flag = 1;
vui->max_bytes_per_pic_denom = 0;
vui->max_bits_per_min_cu_denom = 0;
vui->log2_max_mv_length_horizontal = 15;
vui->log2_max_mv_length_vertical = 15;
// PPS
pps->nal_unit_header = (H265RawNALUnitHeader) {
.nal_unit_type = HEVC_NAL_PPS,
.nuh_layer_id = 0,
.nuh_temporal_id_plus1 = 1,
};
pps->pps_pic_parameter_set_id = 0;
pps->pps_seq_parameter_set_id = sps->sps_seq_parameter_set_id;
pps->num_ref_idx_l0_default_active_minus1 = 0;
pps->num_ref_idx_l1_default_active_minus1 = 0;
pps->init_qp_minus26 = priv->fixed_qp_idr - 26;
pps->cu_qp_delta_enabled_flag = (ctx->va_rc_mode != VA_RC_CQP);
pps->diff_cu_qp_delta_depth = 0;
pps->pps_loop_filter_across_slices_enabled_flag = 1;
// Fill VAAPI parameter buffers.
*vseq = (VAEncSequenceParameterBufferHEVC) {
.general_profile_idc = vps->profile_tier_level.general_profile_idc,
.general_level_idc = vps->profile_tier_level.general_level_idc,
.general_tier_flag = vps->profile_tier_level.general_tier_flag,
.intra_period = avctx->gop_size,
.intra_idr_period = avctx->gop_size,
.ip_period = ctx->b_per_p + 1,
.bits_per_second = avctx->bit_rate,
.pic_width_in_luma_samples = sps->pic_width_in_luma_samples,
.pic_height_in_luma_samples = sps->pic_height_in_luma_samples,
.seq_fields.bits = {
.chroma_format_idc = sps->chroma_format_idc,
.separate_colour_plane_flag = sps->separate_colour_plane_flag,
.bit_depth_luma_minus8 = sps->bit_depth_luma_minus8,
.bit_depth_chroma_minus8 = sps->bit_depth_chroma_minus8,
.scaling_list_enabled_flag = sps->scaling_list_enabled_flag,
.strong_intra_smoothing_enabled_flag =
sps->strong_intra_smoothing_enabled_flag,
.amp_enabled_flag = sps->amp_enabled_flag,
.sample_adaptive_offset_enabled_flag =
sps->sample_adaptive_offset_enabled_flag,
.pcm_enabled_flag = sps->pcm_enabled_flag,
.pcm_loop_filter_disabled_flag = sps->pcm_loop_filter_disabled_flag,
.sps_temporal_mvp_enabled_flag = sps->sps_temporal_mvp_enabled_flag,
},
.log2_min_luma_coding_block_size_minus3 =
sps->log2_min_luma_coding_block_size_minus3,
.log2_diff_max_min_luma_coding_block_size =
sps->log2_diff_max_min_luma_coding_block_size,
.log2_min_transform_block_size_minus2 =
sps->log2_min_luma_transform_block_size_minus2,
.log2_diff_max_min_transform_block_size =
sps->log2_diff_max_min_luma_transform_block_size,
.max_transform_hierarchy_depth_inter =
sps->max_transform_hierarchy_depth_inter,
.max_transform_hierarchy_depth_intra =
sps->max_transform_hierarchy_depth_intra,
.pcm_sample_bit_depth_luma_minus1 =
sps->pcm_sample_bit_depth_luma_minus1,
.pcm_sample_bit_depth_chroma_minus1 =
sps->pcm_sample_bit_depth_chroma_minus1,
.log2_min_pcm_luma_coding_block_size_minus3 =
sps->log2_min_pcm_luma_coding_block_size_minus3,
.log2_max_pcm_luma_coding_block_size_minus3 =
sps->log2_min_pcm_luma_coding_block_size_minus3 +
sps->log2_diff_max_min_pcm_luma_coding_block_size,
.vui_parameters_present_flag = 0,
};
*vpic = (VAEncPictureParameterBufferHEVC) {
.decoded_curr_pic = {
.picture_id = VA_INVALID_ID,
.flags = VA_PICTURE_HEVC_INVALID,
},
.coded_buf = VA_INVALID_ID,
.collocated_ref_pic_index = 0xff,
.last_picture = 0,
.pic_init_qp = pps->init_qp_minus26 + 26,
.diff_cu_qp_delta_depth = pps->diff_cu_qp_delta_depth,
.pps_cb_qp_offset = pps->pps_cb_qp_offset,
.pps_cr_qp_offset = pps->pps_cr_qp_offset,
.num_tile_columns_minus1 = pps->num_tile_columns_minus1,
.num_tile_rows_minus1 = pps->num_tile_rows_minus1,
.log2_parallel_merge_level_minus2 = pps->log2_parallel_merge_level_minus2,
.ctu_max_bitsize_allowed = 0,
.num_ref_idx_l0_default_active_minus1 =
pps->num_ref_idx_l0_default_active_minus1,
.num_ref_idx_l1_default_active_minus1 =
pps->num_ref_idx_l1_default_active_minus1,
.slice_pic_parameter_set_id = pps->pps_pic_parameter_set_id,
.pic_fields.bits = {
.sign_data_hiding_enabled_flag = pps->sign_data_hiding_enabled_flag,
.constrained_intra_pred_flag = pps->constrained_intra_pred_flag,
.transform_skip_enabled_flag = pps->transform_skip_enabled_flag,
.cu_qp_delta_enabled_flag = pps->cu_qp_delta_enabled_flag,
.weighted_pred_flag = pps->weighted_pred_flag,
.weighted_bipred_flag = pps->weighted_bipred_flag,
.transquant_bypass_enabled_flag = pps->transquant_bypass_enabled_flag,
.tiles_enabled_flag = pps->tiles_enabled_flag,
.entropy_coding_sync_enabled_flag = pps->entropy_coding_sync_enabled_flag,
.loop_filter_across_tiles_enabled_flag =
pps->loop_filter_across_tiles_enabled_flag,
.scaling_list_data_present_flag = (sps->sps_scaling_list_data_present_flag |
pps->pps_scaling_list_data_present_flag),
.screen_content_flag = 0,
.enable_gpu_weighted_prediction = 0,
.no_output_of_prior_pics_flag = 0,
},
};
return 0;
}
static int vaapi_encode_h265_init_picture_params(AVCodecContext *avctx,
VAAPIEncodePicture *pic)
{
VAAPIEncodeContext *ctx = avctx->priv_data;
VAAPIEncodeH265Context *priv = ctx->priv_data;
VAAPIEncodeH265Options *opt = ctx->codec_options;
VAEncPictureParameterBufferHEVC *vpic = pic->codec_picture_params;
int i;
if (pic->type == PICTURE_TYPE_IDR) {
av_assert0(pic->display_order == pic->encode_order);
priv->last_idr_frame = pic->display_order;
priv->slice_nal_unit = HEVC_NAL_IDR_W_RADL;
priv->slice_type = HEVC_SLICE_I;
priv->pic_type = 0;
} else {
av_assert0(pic->encode_order > priv->last_idr_frame);
if (pic->type == PICTURE_TYPE_I) {
priv->slice_nal_unit = HEVC_NAL_CRA_NUT;
priv->slice_type = HEVC_SLICE_I;
priv->pic_type = 0;
} else if (pic->type == PICTURE_TYPE_P) {
av_assert0(pic->refs[0]);
priv->slice_nal_unit = HEVC_NAL_TRAIL_R;
priv->slice_type = HEVC_SLICE_P;
priv->pic_type = 1;
} else {
av_assert0(pic->refs[0] && pic->refs[1]);
if (pic->refs[1]->type == PICTURE_TYPE_I)
priv->slice_nal_unit = HEVC_NAL_RASL_N;
else
priv->slice_nal_unit = HEVC_NAL_TRAIL_N;
priv->slice_type = HEVC_SLICE_B;
priv->pic_type = 2;
}
}
priv->pic_order_cnt = pic->display_order - priv->last_idr_frame;
if (opt->aud) {
priv->aud_needed = 1;
priv->aud.nal_unit_header = (H265RawNALUnitHeader) {
.nal_unit_type = HEVC_NAL_AUD,
.nuh_layer_id = 0,
.nuh_temporal_id_plus1 = 1,
};
priv->aud.pic_type = priv->pic_type;
} else {
priv->aud_needed = 0;
}
vpic->decoded_curr_pic = (VAPictureHEVC) {
.picture_id = pic->recon_surface,
.pic_order_cnt = priv->pic_order_cnt,
.flags = 0,
};
for (i = 0; i < pic->nb_refs; i++) {
VAAPIEncodePicture *ref = pic->refs[i];
av_assert0(ref && ref->encode_order < pic->encode_order);
vpic->reference_frames[i] = (VAPictureHEVC) {
.picture_id = ref->recon_surface,
.pic_order_cnt = ref->display_order - priv->last_idr_frame,
.flags = (ref->display_order < pic->display_order ?
VA_PICTURE_HEVC_RPS_ST_CURR_BEFORE : 0) |
(ref->display_order > pic->display_order ?
VA_PICTURE_HEVC_RPS_ST_CURR_AFTER : 0),
};
}
for (; i < FF_ARRAY_ELEMS(vpic->reference_frames); i++) {
vpic->reference_frames[i] = (VAPictureHEVC) {
.picture_id = VA_INVALID_ID,
.flags = VA_PICTURE_HEVC_INVALID,
};
}
vpic->coded_buf = pic->output_buffer;
vpic->nal_unit_type = priv->slice_nal_unit;
switch (pic->type) {
case PICTURE_TYPE_IDR:
vpic->pic_fields.bits.idr_pic_flag = 1;
vpic->pic_fields.bits.coding_type = 1;
vpic->pic_fields.bits.reference_pic_flag = 1;
break;
case PICTURE_TYPE_I:
vpic->pic_fields.bits.idr_pic_flag = 0;
vpic->pic_fields.bits.coding_type = 1;
vpic->pic_fields.bits.reference_pic_flag = 1;
break;
case PICTURE_TYPE_P:
vpic->pic_fields.bits.idr_pic_flag = 0;
vpic->pic_fields.bits.coding_type = 2;
vpic->pic_fields.bits.reference_pic_flag = 1;
break;
case PICTURE_TYPE_B:
vpic->pic_fields.bits.idr_pic_flag = 0;
vpic->pic_fields.bits.coding_type = 3;
vpic->pic_fields.bits.reference_pic_flag = 0;
break;
default:
av_assert0(0 && "invalid picture type");
}
pic->nb_slices = 1;
return 0;
}
static int vaapi_encode_h265_init_slice_params(AVCodecContext *avctx,
VAAPIEncodePicture *pic,
VAAPIEncodeSlice *slice)
{
VAAPIEncodeContext *ctx = avctx->priv_data;
VAAPIEncodeH265Context *priv = ctx->priv_data;
const H265RawSPS *sps = &priv->sps;
const H265RawPPS *pps = &priv->pps;
H265RawSliceHeader *sh = &priv->slice.header;
VAEncPictureParameterBufferHEVC *vpic = pic->codec_picture_params;
VAEncSliceParameterBufferHEVC *vslice = slice->codec_slice_params;
int i;
sh->nal_unit_header = (H265RawNALUnitHeader) {
.nal_unit_type = priv->slice_nal_unit,
.nuh_layer_id = 0,
.nuh_temporal_id_plus1 = 1,
};
sh->slice_pic_parameter_set_id = pps->pps_pic_parameter_set_id;
// Currently we only support one slice per frame.
sh->first_slice_segment_in_pic_flag = 1;
sh->slice_segment_address = 0;
sh->slice_type = priv->slice_type;
sh->slice_pic_order_cnt_lsb = priv->pic_order_cnt &
(1 << (sps->log2_max_pic_order_cnt_lsb_minus4 + 4)) - 1;
if (pic->type != PICTURE_TYPE_IDR) {
H265RawSTRefPicSet *rps;
VAAPIEncodePicture *st;
int used;
sh->short_term_ref_pic_set_sps_flag = 0;
rps = &sh->short_term_ref_pic_set;
memset(rps, 0, sizeof(*rps));
for (st = ctx->pic_start; st; st = st->next) {
if (st->encode_order >= pic->encode_order) {
// Not yet in DPB.
continue;
}
used = 0;
for (i = 0; i < pic->nb_refs; i++) {
if (pic->refs[i] == st)
used = 1;
}
if (!used) {
// Usually each picture always uses all of the others in the
// DPB as references. The one case we have to treat here is
// a non-IDR IRAP picture, which may need to hold unused
// references across itself to be used for the decoding of
// following RASL pictures. This looks for such an RASL
// picture, and keeps the reference if there is one.
VAAPIEncodePicture *rp;
for (rp = ctx->pic_start; rp; rp = rp->next) {
if (rp->encode_order < pic->encode_order)
continue;
if (rp->type != PICTURE_TYPE_B)
continue;
if (rp->refs[0] == st && rp->refs[1] == pic)
break;
}
if (!rp)
continue;
}
// This only works for one instance of each (delta_poc_sN_minus1
// is relative to the previous frame in the list, not relative to
// the current frame directly).
if (st->display_order < pic->display_order) {
rps->delta_poc_s0_minus1[rps->num_negative_pics] =
pic->display_order - st->display_order - 1;
rps->used_by_curr_pic_s0_flag[rps->num_negative_pics] = used;
++rps->num_negative_pics;
} else {
rps->delta_poc_s1_minus1[rps->num_positive_pics] =
st->display_order - pic->display_order - 1;
rps->used_by_curr_pic_s1_flag[rps->num_positive_pics] = used;
++rps->num_positive_pics;
}
}
sh->num_long_term_sps = 0;
sh->num_long_term_pics = 0;
sh->slice_temporal_mvp_enabled_flag =
sps->sps_temporal_mvp_enabled_flag;
if (sh->slice_temporal_mvp_enabled_flag) {
sh->collocated_from_l0_flag = sh->slice_type == HEVC_SLICE_B;
sh->collocated_ref_idx = 0;
}
sh->num_ref_idx_active_override_flag = 0;
sh->num_ref_idx_l0_active_minus1 = pps->num_ref_idx_l0_default_active_minus1;
sh->num_ref_idx_l1_active_minus1 = pps->num_ref_idx_l1_default_active_minus1;
}
sh->slice_sao_luma_flag = sh->slice_sao_chroma_flag =
sps->sample_adaptive_offset_enabled_flag;
if (pic->type == PICTURE_TYPE_B)
sh->slice_qp_delta = priv->fixed_qp_b - (pps->init_qp_minus26 + 26);
else if (pic->type == PICTURE_TYPE_P)
sh->slice_qp_delta = priv->fixed_qp_p - (pps->init_qp_minus26 + 26);
else
sh->slice_qp_delta = priv->fixed_qp_idr - (pps->init_qp_minus26 + 26);
*vslice = (VAEncSliceParameterBufferHEVC) {
.slice_segment_address = sh->slice_segment_address,
.num_ctu_in_slice = priv->ctu_width * priv->ctu_height,
.slice_type = sh->slice_type,
.slice_pic_parameter_set_id = sh->slice_pic_parameter_set_id,
.num_ref_idx_l0_active_minus1 = sh->num_ref_idx_l0_active_minus1,
.num_ref_idx_l1_active_minus1 = sh->num_ref_idx_l1_active_minus1,
.ref_pic_list0[0] = vpic->reference_frames[0],
.ref_pic_list1[0] = vpic->reference_frames[1],
.luma_log2_weight_denom = sh->luma_log2_weight_denom,
.delta_chroma_log2_weight_denom = sh->delta_chroma_log2_weight_denom,
.max_num_merge_cand = 5 - sh->five_minus_max_num_merge_cand,
.slice_qp_delta = sh->slice_qp_delta,
.slice_cb_qp_offset = sh->slice_cb_qp_offset,
.slice_cr_qp_offset = sh->slice_cr_qp_offset,
.slice_beta_offset_div2 = sh->slice_beta_offset_div2,
.slice_tc_offset_div2 = sh->slice_tc_offset_div2,
.slice_fields.bits = {
.last_slice_of_pic_flag = 1,
.dependent_slice_segment_flag = sh->dependent_slice_segment_flag,
.colour_plane_id = sh->colour_plane_id,
.slice_temporal_mvp_enabled_flag =
sh->slice_temporal_mvp_enabled_flag,
.slice_sao_luma_flag = sh->slice_sao_luma_flag,
.slice_sao_chroma_flag = sh->slice_sao_chroma_flag,
.num_ref_idx_active_override_flag =
sh->num_ref_idx_active_override_flag,
.mvd_l1_zero_flag = sh->mvd_l1_zero_flag,
.cabac_init_flag = sh->cabac_init_flag,
.slice_deblocking_filter_disabled_flag =
sh->slice_deblocking_filter_disabled_flag,
.slice_loop_filter_across_slices_enabled_flag =
sh->slice_loop_filter_across_slices_enabled_flag,
.collocated_from_l0_flag = sh->collocated_from_l0_flag,
},
};
return 0;
}
static av_cold int vaapi_encode_h265_configure(AVCodecContext *avctx)
{
VAAPIEncodeContext *ctx = avctx->priv_data;
VAAPIEncodeH265Context *priv = ctx->priv_data;
VAAPIEncodeH265Options *opt = ctx->codec_options;
int err;
err = ff_cbs_init(&priv->cbc, AV_CODEC_ID_HEVC, avctx);
if (err < 0)
return err;
priv->ctu_width = FFALIGN(ctx->surface_width, 32) / 32;
priv->ctu_height = FFALIGN(ctx->surface_height, 32) / 32;
av_log(avctx, AV_LOG_VERBOSE, "Input %ux%u -> Surface %ux%u -> CTU %ux%u.\n",
avctx->width, avctx->height, ctx->surface_width,
ctx->surface_height, priv->ctu_width, priv->ctu_height);
if (ctx->va_rc_mode == VA_RC_CQP) {
priv->fixed_qp_p = opt->qp;
if (avctx->i_quant_factor > 0.0)
priv->fixed_qp_idr = (int)((priv->fixed_qp_p * avctx->i_quant_factor +
avctx->i_quant_offset) + 0.5);
else
priv->fixed_qp_idr = priv->fixed_qp_p;
if (avctx->b_quant_factor > 0.0)
priv->fixed_qp_b = (int)((priv->fixed_qp_p * avctx->b_quant_factor +
avctx->b_quant_offset) + 0.5);
else
priv->fixed_qp_b = priv->fixed_qp_p;
av_log(avctx, AV_LOG_DEBUG, "Using fixed QP = "
"%d / %d / %d for IDR- / P- / B-frames.\n",
priv->fixed_qp_idr, priv->fixed_qp_p, priv->fixed_qp_b);
} else if (ctx->va_rc_mode == VA_RC_CBR) {
// These still need to be set for pic_init_qp/slice_qp_delta.
priv->fixed_qp_idr = 30;
priv->fixed_qp_p = 30;
priv->fixed_qp_b = 30;
av_log(avctx, AV_LOG_DEBUG, "Using constant-bitrate = %d bps.\n",
avctx->bit_rate);
} else {
av_assert0(0 && "Invalid RC mode.");
}
return 0;
}
static const VAAPIEncodeType vaapi_encode_type_h265 = {
.priv_data_size = sizeof(VAAPIEncodeH265Context),
.configure = &vaapi_encode_h265_configure,
.sequence_params_size = sizeof(VAEncSequenceParameterBufferHEVC),
.init_sequence_params = &vaapi_encode_h265_init_sequence_params,
.picture_params_size = sizeof(VAEncPictureParameterBufferHEVC),
.init_picture_params = &vaapi_encode_h265_init_picture_params,
.slice_params_size = sizeof(VAEncSliceParameterBufferHEVC),
.init_slice_params = &vaapi_encode_h265_init_slice_params,
.sequence_header_type = VAEncPackedHeaderSequence,
.write_sequence_header = &vaapi_encode_h265_write_sequence_header,
.slice_header_type = VAEncPackedHeaderHEVC_Slice,
.write_slice_header = &vaapi_encode_h265_write_slice_header,
};
static av_cold int vaapi_encode_h265_init(AVCodecContext *avctx)
{
VAAPIEncodeContext *ctx = avctx->priv_data;
ctx->codec = &vaapi_encode_type_h265;
switch (avctx->profile) {
case FF_PROFILE_HEVC_MAIN:
case FF_PROFILE_UNKNOWN:
ctx->va_profile = VAProfileHEVCMain;
ctx->va_rt_format = VA_RT_FORMAT_YUV420;
break;
case FF_PROFILE_HEVC_MAIN_10:
#ifdef VA_RT_FORMAT_YUV420_10BPP
ctx->va_profile = VAProfileHEVCMain10;
ctx->va_rt_format = VA_RT_FORMAT_YUV420_10BPP;
break;
#else
av_log(avctx, AV_LOG_ERROR, "10-bit encoding is not "
"supported with this VAAPI version.\n");
return AVERROR(ENOSYS);
#endif
default:
av_log(avctx, AV_LOG_ERROR, "Unknown H.265 profile %d.\n",
avctx->profile);
return AVERROR(EINVAL);
}
ctx->va_entrypoint = VAEntrypointEncSlice;
if (avctx->bit_rate > 0)
ctx->va_rc_mode = VA_RC_CBR;
else
ctx->va_rc_mode = VA_RC_CQP;
ctx->va_packed_headers =
VA_ENC_PACKED_HEADER_SEQUENCE | // VPS, SPS and PPS.
VA_ENC_PACKED_HEADER_SLICE; // Slice headers.
ctx->surface_width = FFALIGN(avctx->width, 16);
ctx->surface_height = FFALIGN(avctx->height, 16);
return ff_vaapi_encode_init(avctx);
}
static av_cold int vaapi_encode_h265_close(AVCodecContext *avctx)
{
VAAPIEncodeContext *ctx = avctx->priv_data;
VAAPIEncodeH265Context *priv = ctx->priv_data;
if (priv)
ff_cbs_close(&priv->cbc);
return ff_vaapi_encode_close(avctx);
}
#define OFFSET(x) (offsetof(VAAPIEncodeContext, codec_options_data) + \
offsetof(VAAPIEncodeH265Options, x))
#define FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM)
static const AVOption vaapi_encode_h265_options[] = {
{ "qp", "Constant QP (for P-frames; scaled by qfactor/qoffset for I/B)",
OFFSET(qp), AV_OPT_TYPE_INT, { .i64 = 25 }, 0, 52, FLAGS },
{ "aud", "Include AUD",
OFFSET(aud), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, FLAGS },
{ NULL },
};
static const AVCodecDefault vaapi_encode_h265_defaults[] = {
{ "profile", "1" },
{ "level", "51" },
{ "b", "0" },
{ "bf", "2" },
{ "g", "120" },
{ "i_qfactor", "1.0" },
{ "i_qoffset", "0.0" },
{ "b_qfactor", "1.2" },
{ "b_qoffset", "0.0" },
{ NULL },
};
static const AVClass vaapi_encode_h265_class = {
.class_name = "h265_vaapi",
.item_name = av_default_item_name,
.option = vaapi_encode_h265_options,
.version = LIBAVUTIL_VERSION_INT,
};
AVCodec ff_hevc_vaapi_encoder = {
.name = "hevc_vaapi",
.long_name = NULL_IF_CONFIG_SMALL("H.265/HEVC (VAAPI)"),
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_HEVC,
.priv_data_size = (sizeof(VAAPIEncodeContext) +
sizeof(VAAPIEncodeH265Options)),
.init = &vaapi_encode_h265_init,
.encode2 = &ff_vaapi_encode2,
.close = &vaapi_encode_h265_close,
.priv_class = &vaapi_encode_h265_class,
.capabilities = AV_CODEC_CAP_DELAY,
.defaults = vaapi_encode_h265_defaults,
.pix_fmts = (const enum AVPixelFormat[]) {
AV_PIX_FMT_VAAPI,
AV_PIX_FMT_NONE,
},
};