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ffmpeg/libavcodec/hw_base_encode_h265.c

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/*
* 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 "hw_base_encode_h265.h"
#include "h2645data.h"
#include "h265_profile_level.h"
#include "libavutil/pixdesc.h"
int ff_hw_base_encode_init_params_h265(FFHWBaseEncodeContext *base_ctx,
AVCodecContext *avctx,
FFHWBaseEncodeH265 *common,
FFHWBaseEncodeH265Opts *opts)
{
H265RawVPS *vps = &common->raw_vps;
H265RawSPS *sps = &common->raw_sps;
H265RawPPS *pps = &common->raw_pps;
H265RawProfileTierLevel *ptl = &vps->profile_tier_level;
H265RawVUI *vui = &sps->vui;
const AVPixFmtDescriptor *desc;
int chroma_format, bit_depth;
int i;
memset(vps, 0, sizeof(*vps));
memset(sps, 0, sizeof(*sps));
memset(pps, 0, sizeof(*pps));
desc = av_pix_fmt_desc_get(base_ctx->input_frames->sw_format);
av_assert0(desc);
if (desc->nb_components == 1) {
chroma_format = 0;
} else {
if (desc->log2_chroma_w == 1 && desc->log2_chroma_h == 1) {
chroma_format = 1;
} else if (desc->log2_chroma_w == 1 && desc->log2_chroma_h == 0) {
chroma_format = 2;
} else if (desc->log2_chroma_w == 0 && desc->log2_chroma_h == 0) {
chroma_format = 3;
} else {
av_log(avctx, AV_LOG_ERROR, "Chroma format of input pixel format "
"%s is not supported.\n", desc->name);
return AVERROR(EINVAL);
}
}
bit_depth = desc->comp[0].depth;
// 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;
ptl->general_profile_space = 0;
ptl->general_profile_idc = avctx->profile;
ptl->general_tier_flag = opts->tier;
ptl->general_profile_compatibility_flag[ptl->general_profile_idc] = 1;
if (ptl->general_profile_compatibility_flag[1])
ptl->general_profile_compatibility_flag[2] = 1;
if (ptl->general_profile_compatibility_flag[3]) {
ptl->general_profile_compatibility_flag[1] = 1;
ptl->general_profile_compatibility_flag[2] = 1;
}
ptl->general_progressive_source_flag = 1;
ptl->general_interlaced_source_flag = 0;
ptl->general_non_packed_constraint_flag = 1;
ptl->general_frame_only_constraint_flag = 1;
ptl->general_max_14bit_constraint_flag = bit_depth <= 14;
ptl->general_max_12bit_constraint_flag = bit_depth <= 12;
ptl->general_max_10bit_constraint_flag = bit_depth <= 10;
ptl->general_max_8bit_constraint_flag = bit_depth == 8;
ptl->general_max_422chroma_constraint_flag = chroma_format <= 2;
ptl->general_max_420chroma_constraint_flag = chroma_format <= 1;
ptl->general_max_monochrome_constraint_flag = chroma_format == 0;
ptl->general_intra_constraint_flag = base_ctx->gop_size == 1;
ptl->general_one_picture_only_constraint_flag = 0;
ptl->general_lower_bit_rate_constraint_flag = 1;
if (avctx->level != AV_LEVEL_UNKNOWN) {
ptl->general_level_idc = avctx->level;
} else {
const H265LevelDescriptor *level;
level = ff_h265_guess_level(ptl, avctx->bit_rate,
base_ctx->surface_width, base_ctx->surface_height,
opts->nb_slices, opts->tile_rows, opts->tile_cols,
(base_ctx->b_per_p > 0) + 1);
if (level) {
av_log(avctx, AV_LOG_VERBOSE, "Using level %s.\n", level->name);
ptl->general_level_idc = level->level_idc;
} else {
av_log(avctx, AV_LOG_VERBOSE, "Stream will not conform to "
"any normal level; using level 8.5.\n");
ptl->general_level_idc = 255;
// The tier flag must be set in level 8.5.
ptl->general_tier_flag = 1;
}
}
vps->vps_sub_layer_ordering_info_present_flag = 0;
vps->vps_max_dec_pic_buffering_minus1[0] = base_ctx->max_b_depth + 1;
vps->vps_max_num_reorder_pics[0] = base_ctx->max_b_depth;
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 = chroma_format;
sps->separate_colour_plane_flag = 0;
sps->pic_width_in_luma_samples = base_ctx->surface_width;
sps->pic_height_in_luma_samples = base_ctx->surface_height;
if (avctx->width != base_ctx->surface_width ||
avctx->height != base_ctx->surface_height) {
sps->conformance_window_flag = 1;
sps->conf_win_left_offset = 0;
sps->conf_win_right_offset =
(base_ctx->surface_width - avctx->width) >> desc->log2_chroma_w;
sps->conf_win_top_offset = 0;
sps->conf_win_bottom_offset =
(base_ctx->surface_height - avctx->height) >> desc->log2_chroma_h;
} else {
sps->conformance_window_flag = 0;
}
sps->bit_depth_luma_minus8 = bit_depth - 8;
sps->bit_depth_chroma_minus8 = bit_depth - 8;
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 values come from the capabilities of the first encoder
// implementation in the i965 driver on Intel Skylake. They may
// fail badly with other platforms or drivers.
// 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) {
int num, den, i;
av_reduce(&num, &den, avctx->sample_aspect_ratio.num,
avctx->sample_aspect_ratio.den, 65535);
for (i = 0; i < FF_ARRAY_ELEMS(ff_h2645_pixel_aspect); i++) {
if (num == ff_h2645_pixel_aspect[i].num &&
den == ff_h2645_pixel_aspect[i].den) {
vui->aspect_ratio_idc = i;
break;
}
}
if (i >= FF_ARRAY_ELEMS(ff_h2645_pixel_aspect)) {
vui->aspect_ratio_idc = 255;
vui->sar_width = num;
vui->sar_height = den;
}
vui->aspect_ratio_info_present_flag = 1;
}
// Unspecified video format, from table E-2.
vui->video_format = 5;
vui->video_full_range_flag =
avctx->color_range == AVCOL_RANGE_JPEG;
vui->colour_primaries = avctx->color_primaries;
vui->transfer_characteristics = avctx->color_trc;
vui->matrix_coefficients = avctx->colorspace;
if (avctx->color_primaries != AVCOL_PRI_UNSPECIFIED ||
avctx->color_trc != AVCOL_TRC_UNSPECIFIED ||
avctx->colorspace != AVCOL_SPC_UNSPECIFIED)
vui->colour_description_present_flag = 1;
if (avctx->color_range != AVCOL_RANGE_UNSPECIFIED ||
vui->colour_description_present_flag)
vui->video_signal_type_present_flag = 1;
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 = opts->fixed_qp_idr - 26;
pps->cu_qp_delta_enabled_flag = opts->cu_qp_delta_enabled_flag;
pps->diff_cu_qp_delta_depth = 0;
if (opts->tile_rows && opts->tile_cols) {
int uniform_spacing;
pps->tiles_enabled_flag = 1;
pps->num_tile_columns_minus1 = opts->tile_cols - 1;
pps->num_tile_rows_minus1 = opts->tile_rows - 1;
// Test whether the spacing provided matches the H.265 uniform
// spacing, and set the flag if it does.
uniform_spacing = 1;
for (i = 0; i <= pps->num_tile_columns_minus1 &&
uniform_spacing; i++) {
if (opts->col_width[i] !=
(i + 1) * opts->slice_block_cols / opts->tile_cols -
i * opts->slice_block_cols / opts->tile_cols)
uniform_spacing = 0;
}
for (i = 0; i <= pps->num_tile_rows_minus1 &&
uniform_spacing; i++) {
if (opts->row_height[i] !=
(i + 1) * opts->slice_block_rows / opts->tile_rows -
i * opts->slice_block_rows / opts->tile_rows)
uniform_spacing = 0;
}
pps->uniform_spacing_flag = uniform_spacing;
for (i = 0; i <= pps->num_tile_columns_minus1; i++)
pps->column_width_minus1[i] = opts->col_width[i] - 1;
for (i = 0; i <= pps->num_tile_rows_minus1; i++)
pps->row_height_minus1[i] = opts->row_height[i] - 1;
pps->loop_filter_across_tiles_enabled_flag = 1;
}
pps->pps_loop_filter_across_slices_enabled_flag = 1;
return 0;
}
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