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FFmpeg/libavcodec/vaapi_encode_h264.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_h264.h>
#include "libavutil/avassert.h"
#include "libavutil/common.h"
#include "libavutil/internal.h"
#include "libavutil/opt.h"
#include "avcodec.h"
#include "cbs.h"
#include "cbs_h264.h"
#include "h264.h"
#include "h264_sei.h"
#include "internal.h"
#include "vaapi_encode.h"
enum {
SEI_TIMING = 0x01,
SEI_IDENTIFIER = 0x02,
SEI_RECOVERY_POINT = 0x04,
};
// Random (version 4) ISO 11578 UUID.
static const uint8_t vaapi_encode_h264_sei_identifier_uuid[16] = {
0x59, 0x94, 0x8b, 0x28, 0x11, 0xec, 0x45, 0xaf,
0x96, 0x75, 0x19, 0xd4, 0x1f, 0xea, 0xa9, 0x4d,
};
typedef struct VAAPIEncodeH264Context {
int mb_width;
int mb_height;
int fixed_qp_idr;
int fixed_qp_p;
int fixed_qp_b;
H264RawAUD aud;
H264RawSPS sps;
H264RawPPS pps;
H264RawSEI sei;
H264RawSlice slice;
H264RawSEIBufferingPeriod buffering_period;
H264RawSEIPicTiming pic_timing;
H264RawSEIRecoveryPoint recovery_point;
H264RawSEIUserDataUnregistered identifier;
char *identifier_string;
int frame_num;
int pic_order_cnt;
int next_frame_num;
int64_t last_idr_frame;
int64_t idr_pic_count;
int primary_pic_type;
int slice_type;
int cpb_delay;
int dpb_delay;
CodedBitstreamContext cbc;
CodedBitstreamFragment current_access_unit;
int aud_needed;
int sei_needed;
} VAAPIEncodeH264Context;
typedef struct VAAPIEncodeH264Options {
int qp;
int quality;
int low_power;
int aud;
int sei;
} VAAPIEncodeH264Options;
static int vaapi_encode_h264_write_access_unit(AVCodecContext *avctx,
char *data, size_t *data_len,
CodedBitstreamFragment *au)
{
VAAPIEncodeContext *ctx = avctx->priv_data;
VAAPIEncodeH264Context *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_h264_add_nal(AVCodecContext *avctx,
CodedBitstreamFragment *au,
void *nal_unit)
{
VAAPIEncodeContext *ctx = avctx->priv_data;
VAAPIEncodeH264Context *priv = ctx->priv_data;
H264RawNALUnitHeader *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_h264_write_sequence_header(AVCodecContext *avctx,
char *data, size_t *data_len)
{
VAAPIEncodeContext *ctx = avctx->priv_data;
VAAPIEncodeH264Context *priv = ctx->priv_data;
CodedBitstreamFragment *au = &priv->current_access_unit;
int err;
if (priv->aud_needed) {
err = vaapi_encode_h264_add_nal(avctx, au, &priv->aud);
if (err < 0)
goto fail;
priv->aud_needed = 0;
}
err = vaapi_encode_h264_add_nal(avctx, au, &priv->sps);
if (err < 0)
goto fail;
err = vaapi_encode_h264_add_nal(avctx, au, &priv->pps);
if (err < 0)
goto fail;
err = vaapi_encode_h264_write_access_unit(avctx, data, data_len, au);
fail:
ff_cbs_fragment_uninit(&priv->cbc, au);
return err;
}
static int vaapi_encode_h264_write_slice_header(AVCodecContext *avctx,
VAAPIEncodePicture *pic,
VAAPIEncodeSlice *slice,
char *data, size_t *data_len)
{
VAAPIEncodeContext *ctx = avctx->priv_data;
VAAPIEncodeH264Context *priv = ctx->priv_data;
CodedBitstreamFragment *au = &priv->current_access_unit;
int err;
if (priv->aud_needed) {
err = vaapi_encode_h264_add_nal(avctx, au, &priv->aud);
if (err < 0)
goto fail;
priv->aud_needed = 0;
}
err = vaapi_encode_h264_add_nal(avctx, au, &priv->slice);
if (err < 0)
goto fail;
err = vaapi_encode_h264_write_access_unit(avctx, data, data_len, au);
fail:
ff_cbs_fragment_uninit(&priv->cbc, au);
return err;
}
static int vaapi_encode_h264_write_extra_header(AVCodecContext *avctx,
VAAPIEncodePicture *pic,
int index, int *type,
char *data, size_t *data_len)
{
VAAPIEncodeContext *ctx = avctx->priv_data;
VAAPIEncodeH264Context *priv = ctx->priv_data;
VAAPIEncodeH264Options *opt = ctx->codec_options;
CodedBitstreamFragment *au = &priv->current_access_unit;
int err, i;
if (priv->sei_needed) {
if (priv->aud_needed) {
vaapi_encode_h264_add_nal(avctx, au, &priv->aud);
priv->aud_needed = 0;
}
memset(&priv->sei, 0, sizeof(priv->sei));
priv->sei.nal_unit_header.nal_unit_type = H264_NAL_SEI;
i = 0;
if (pic->encode_order == 0 && opt->sei & SEI_IDENTIFIER) {
priv->sei.payload[i].payload_type = H264_SEI_TYPE_USER_DATA_UNREGISTERED;
priv->sei.payload[i].payload.user_data_unregistered = priv->identifier;
++i;
}
if (opt->sei & SEI_TIMING) {
if (pic->type == PICTURE_TYPE_IDR) {
priv->sei.payload[i].payload_type = H264_SEI_TYPE_BUFFERING_PERIOD;
priv->sei.payload[i].payload.buffering_period = priv->buffering_period;
++i;
}
priv->sei.payload[i].payload_type = H264_SEI_TYPE_PIC_TIMING;
priv->sei.payload[i].payload.pic_timing = priv->pic_timing;
++i;
}
if (opt->sei & SEI_RECOVERY_POINT && pic->type == PICTURE_TYPE_I) {
priv->sei.payload[i].payload_type = H264_SEI_TYPE_RECOVERY_POINT;
priv->sei.payload[i].payload.recovery_point = priv->recovery_point;
++i;
}
priv->sei.payload_count = i;
av_assert0(priv->sei.payload_count > 0);
err = vaapi_encode_h264_add_nal(avctx, au, &priv->sei);
if (err < 0)
goto fail;
priv->sei_needed = 0;
err = vaapi_encode_h264_write_access_unit(avctx, data, data_len, au);
if (err < 0)
goto fail;
ff_cbs_fragment_uninit(&priv->cbc, au);
*type = VAEncPackedHeaderH264_SEI;
return 0;
} else {
return AVERROR_EOF;
}
fail:
ff_cbs_fragment_uninit(&priv->cbc, au);
return err;
}
static int vaapi_encode_h264_init_sequence_params(AVCodecContext *avctx)
{
VAAPIEncodeContext *ctx = avctx->priv_data;
VAAPIEncodeH264Context *priv = ctx->priv_data;
VAAPIEncodeH264Options *opt = ctx->codec_options;
H264RawSPS *sps = &priv->sps;
H264RawPPS *pps = &priv->pps;
VAEncSequenceParameterBufferH264 *vseq = ctx->codec_sequence_params;
VAEncPictureParameterBufferH264 *vpic = ctx->codec_picture_params;
memset(&priv->current_access_unit, 0,
sizeof(priv->current_access_unit));
memset(sps, 0, sizeof(*sps));
memset(pps, 0, sizeof(*pps));
sps->nal_unit_header.nal_ref_idc = 3;
sps->nal_unit_header.nal_unit_type = H264_NAL_SPS;
sps->profile_idc = avctx->profile & 0xff;
sps->constraint_set1_flag =
!!(avctx->profile & FF_PROFILE_H264_CONSTRAINED);
sps->constraint_set3_flag =
!!(avctx->profile & FF_PROFILE_H264_INTRA);
sps->level_idc = avctx->level;
sps->seq_parameter_set_id = 0;
sps->chroma_format_idc = 1;
sps->log2_max_frame_num_minus4 = 4;
sps->pic_order_cnt_type = 0;
sps->log2_max_pic_order_cnt_lsb_minus4 =
av_clip(av_log2(ctx->b_per_p + 1) - 2, 0, 12);
sps->max_num_ref_frames =
(avctx->profile & FF_PROFILE_H264_INTRA) ? 0 :
1 + (ctx->b_per_p > 0);
sps->pic_width_in_mbs_minus1 = priv->mb_width - 1;
sps->pic_height_in_map_units_minus1 = priv->mb_height - 1;
sps->frame_mbs_only_flag = 1;
sps->direct_8x8_inference_flag = 1;
if (avctx->width != 16 * priv->mb_width ||
avctx->height != 16 * priv->mb_height) {
sps->frame_cropping_flag = 1;
sps->frame_crop_left_offset = 0;
sps->frame_crop_right_offset =
(16 * priv->mb_width - avctx->width) / 2;
sps->frame_crop_top_offset = 0;
sps->frame_crop_bottom_offset =
(16 * priv->mb_height - avctx->height) / 2;
} else {
sps->frame_cropping_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) {
sps->vui.aspect_ratio_idc = i;
break;
}
}
if (i >= FF_ARRAY_ELEMS(sar_idc)) {
sps->vui.aspect_ratio_idc = 255;
sps->vui.sar_width = avctx->sample_aspect_ratio.num;
sps->vui.sar_height = avctx->sample_aspect_ratio.den;
}
sps->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) {
sps->vui.video_signal_type_present_flag = 1;
sps->vui.video_format = 5; // Unspecified.
sps->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) {
sps->vui.colour_description_present_flag = 1;
sps->vui.colour_primaries = avctx->color_primaries;
sps->vui.transfer_characteristics = avctx->color_trc;
sps->vui.matrix_coefficients = avctx->colorspace;
}
} else {
sps->vui.video_format = 5;
sps->vui.video_full_range_flag = 0;
sps->vui.colour_primaries = avctx->color_primaries;
sps->vui.transfer_characteristics = avctx->color_trc;
sps->vui.matrix_coefficients = avctx->colorspace;
}
if (avctx->chroma_sample_location != AVCHROMA_LOC_UNSPECIFIED) {
sps->vui.chroma_loc_info_present_flag = 1;
sps->vui.chroma_sample_loc_type_top_field =
sps->vui.chroma_sample_loc_type_bottom_field =
avctx->chroma_sample_location - 1;
}
sps->vui.timing_info_present_flag = 1;
if (avctx->framerate.num > 0 && avctx->framerate.den > 0) {
sps->vui.num_units_in_tick = avctx->framerate.den;
sps->vui.time_scale = 2 * avctx->framerate.num;
sps->vui.fixed_frame_rate_flag = 1;
} else {
sps->vui.num_units_in_tick = avctx->time_base.num;
sps->vui.time_scale = 2 * avctx->time_base.den;
sps->vui.fixed_frame_rate_flag = 0;
}
if (opt->sei & SEI_TIMING) {
H264RawHRD *hrd = &sps->vui.nal_hrd_parameters;
sps->vui.nal_hrd_parameters_present_flag = 1;
hrd->cpb_cnt_minus1 = 0;
// Try to scale these to a sensible range so that the
// golomb encode of the value is not overlong.
hrd->bit_rate_scale =
av_clip_uintp2(av_log2(avctx->bit_rate) - 15 - 6, 4);
hrd->bit_rate_value_minus1[0] =
(avctx->bit_rate >> hrd->bit_rate_scale + 6) - 1;
hrd->cpb_size_scale =
av_clip_uintp2(av_log2(ctx->hrd_params.hrd.buffer_size) - 15 - 4, 4);
hrd->cpb_size_value_minus1[0] =
(ctx->hrd_params.hrd.buffer_size >> hrd->cpb_size_scale + 4) - 1;
// CBR mode as defined for the HRD cannot be achieved without filler
// data, so this flag cannot be set even with VAAPI CBR modes.
hrd->cbr_flag[0] = 0;
hrd->initial_cpb_removal_delay_length_minus1 = 23;
hrd->cpb_removal_delay_length_minus1 = 23;
hrd->dpb_output_delay_length_minus1 = 7;
hrd->time_offset_length = 0;
priv->buffering_period.seq_parameter_set_id = sps->seq_parameter_set_id;
// This calculation can easily overflow 32 bits.
priv->buffering_period.nal.initial_cpb_removal_delay[0] = 90000 *
(uint64_t)ctx->hrd_params.hrd.initial_buffer_fullness /
ctx->hrd_params.hrd.buffer_size;
priv->buffering_period.nal.initial_cpb_removal_delay_offset[0] = 0;
} else {
sps->vui.nal_hrd_parameters_present_flag = 0;
sps->vui.low_delay_hrd_flag = 1 - sps->vui.fixed_frame_rate_flag;
}
sps->vui.bitstream_restriction_flag = 1;
sps->vui.motion_vectors_over_pic_boundaries_flag = 1;
sps->vui.log2_max_mv_length_horizontal = 16;
sps->vui.log2_max_mv_length_vertical = 16;
sps->vui.max_num_reorder_frames = (ctx->b_per_p > 0);
sps->vui.max_dec_frame_buffering = vseq->max_num_ref_frames;
pps->nal_unit_header.nal_ref_idc = 3;
pps->nal_unit_header.nal_unit_type = H264_NAL_PPS;
pps->pic_parameter_set_id = 0;
pps->seq_parameter_set_id = 0;
pps->entropy_coding_mode_flag =
!(sps->profile_idc == FF_PROFILE_H264_BASELINE ||
sps->profile_idc == FF_PROFILE_H264_EXTENDED ||
sps->profile_idc == FF_PROFILE_H264_CAVLC_444);
pps->num_ref_idx_l0_default_active_minus1 = 0;
pps->num_ref_idx_l1_default_active_minus1 = 0;
pps->pic_init_qp_minus26 = priv->fixed_qp_idr - 26;
if (sps->profile_idc == FF_PROFILE_H264_BASELINE ||
sps->profile_idc == FF_PROFILE_H264_EXTENDED ||
sps->profile_idc == FF_PROFILE_H264_MAIN) {
pps->more_rbsp_data = 0;
} else {
pps->more_rbsp_data = 1;
pps->transform_8x8_mode_flag = 1;
}
*vseq = (VAEncSequenceParameterBufferH264) {
.seq_parameter_set_id = sps->seq_parameter_set_id,
.level_idc = sps->level_idc,
.intra_period = avctx->gop_size,
.intra_idr_period = avctx->gop_size,
.ip_period = ctx->b_per_p + 1,
.bits_per_second = avctx->bit_rate,
.max_num_ref_frames = sps->max_num_ref_frames,
.picture_width_in_mbs = sps->pic_width_in_mbs_minus1 + 1,
.picture_height_in_mbs = sps->pic_height_in_map_units_minus1 + 1,
.seq_fields.bits = {
.chroma_format_idc = sps->chroma_format_idc,
.frame_mbs_only_flag = sps->frame_mbs_only_flag,
.mb_adaptive_frame_field_flag = sps->mb_adaptive_frame_field_flag,
.seq_scaling_matrix_present_flag = sps->seq_scaling_matrix_present_flag,
.direct_8x8_inference_flag = sps->direct_8x8_inference_flag,
.log2_max_frame_num_minus4 = sps->log2_max_frame_num_minus4,
.pic_order_cnt_type = sps->pic_order_cnt_type,
.log2_max_pic_order_cnt_lsb_minus4 = sps->log2_max_pic_order_cnt_lsb_minus4,
.delta_pic_order_always_zero_flag = sps->delta_pic_order_always_zero_flag,
},
.bit_depth_luma_minus8 = sps->bit_depth_luma_minus8,
.bit_depth_chroma_minus8 = sps->bit_depth_chroma_minus8,
.frame_cropping_flag = sps->frame_cropping_flag,
.frame_crop_left_offset = sps->frame_crop_left_offset,
.frame_crop_right_offset = sps->frame_crop_right_offset,
.frame_crop_top_offset = sps->frame_crop_top_offset,
.frame_crop_bottom_offset = sps->frame_crop_bottom_offset,
.vui_parameters_present_flag = sps->vui_parameters_present_flag,
.vui_fields.bits = {
.aspect_ratio_info_present_flag = sps->vui.aspect_ratio_info_present_flag,
.timing_info_present_flag = sps->vui.timing_info_present_flag,
.bitstream_restriction_flag = sps->vui.bitstream_restriction_flag,
.log2_max_mv_length_horizontal = sps->vui.log2_max_mv_length_horizontal,
.log2_max_mv_length_vertical = sps->vui.log2_max_mv_length_vertical,
},
.aspect_ratio_idc = sps->vui.aspect_ratio_idc,
.sar_width = sps->vui.sar_width,
.sar_height = sps->vui.sar_height,
.num_units_in_tick = sps->vui.num_units_in_tick,
.time_scale = sps->vui.time_scale,
};
*vpic = (VAEncPictureParameterBufferH264) {
.CurrPic = {
.picture_id = VA_INVALID_ID,
.flags = VA_PICTURE_H264_INVALID,
},
.coded_buf = VA_INVALID_ID,
.pic_parameter_set_id = pps->pic_parameter_set_id,
.seq_parameter_set_id = pps->seq_parameter_set_id,
.pic_init_qp = pps->pic_init_qp_minus26 + 26,
.num_ref_idx_l0_active_minus1 = pps->num_ref_idx_l0_default_active_minus1,
.num_ref_idx_l1_active_minus1 = pps->num_ref_idx_l1_default_active_minus1,
.chroma_qp_index_offset = pps->chroma_qp_index_offset,
.second_chroma_qp_index_offset = pps->second_chroma_qp_index_offset,
.pic_fields.bits = {
.entropy_coding_mode_flag = pps->entropy_coding_mode_flag,
.weighted_pred_flag = pps->weighted_pred_flag,
.weighted_bipred_idc = pps->weighted_bipred_idc,
.constrained_intra_pred_flag = pps->constrained_intra_pred_flag,
.transform_8x8_mode_flag = pps->transform_8x8_mode_flag,
.deblocking_filter_control_present_flag =
pps->deblocking_filter_control_present_flag,
.redundant_pic_cnt_present_flag = pps->redundant_pic_cnt_present_flag,
.pic_order_present_flag =
pps->bottom_field_pic_order_in_frame_present_flag,
.pic_scaling_matrix_present_flag = pps->pic_scaling_matrix_present_flag,
},
};
return 0;
}
static int vaapi_encode_h264_init_picture_params(AVCodecContext *avctx,
VAAPIEncodePicture *pic)
{
VAAPIEncodeContext *ctx = avctx->priv_data;
VAAPIEncodeH264Context *priv = ctx->priv_data;
VAAPIEncodeH264Options *opt = ctx->codec_options;
H264RawSPS *sps = &priv->sps;
VAEncPictureParameterBufferH264 *vpic = pic->codec_picture_params;
int i;
memset(&priv->current_access_unit, 0,
sizeof(priv->current_access_unit));
if (pic->type == PICTURE_TYPE_IDR) {
av_assert0(pic->display_order == pic->encode_order);
priv->frame_num = 0;
priv->next_frame_num = 1;
priv->cpb_delay = 0;
priv->last_idr_frame = pic->display_order;
++priv->idr_pic_count;
priv->slice_type = 7;
priv->primary_pic_type = 0;
} else {
priv->frame_num = priv->next_frame_num;
if (pic->type != PICTURE_TYPE_B) {
// Reference picture, so frame_num advances.
priv->next_frame_num = (priv->frame_num + 1) &
((1 << (4 + sps->log2_max_frame_num_minus4)) - 1);
}
++priv->cpb_delay;
if (pic->type == PICTURE_TYPE_I) {
priv->slice_type = 7;
priv->primary_pic_type = 0;
} else if (pic->type == PICTURE_TYPE_P) {
priv->slice_type = 5;
priv->primary_pic_type = 1;
} else {
priv->slice_type = 6;
priv->primary_pic_type = 2;
}
}
priv->pic_order_cnt = pic->display_order - priv->last_idr_frame;
priv->dpb_delay = pic->display_order - pic->encode_order + 1;
if (opt->aud) {
priv->aud_needed = 1;
priv->aud.nal_unit_header.nal_unit_type = H264_NAL_AUD;
priv->aud.primary_pic_type = priv->primary_pic_type;
} else {
priv->aud_needed = 0;
}
if (opt->sei & SEI_IDENTIFIER && pic->encode_order == 0)
priv->sei_needed = 1;
if (opt->sei & SEI_TIMING) {
memset(&priv->pic_timing, 0, sizeof(priv->pic_timing));
priv->pic_timing.cpb_removal_delay = 2 * priv->cpb_delay;
priv->pic_timing.dpb_output_delay = 2 * priv->dpb_delay;
priv->sei_needed = 1;
}
if (opt->sei & SEI_RECOVERY_POINT && pic->type == PICTURE_TYPE_I) {
priv->recovery_point.recovery_frame_cnt = 0;
priv->recovery_point.exact_match_flag = 1;
priv->recovery_point.broken_link_flag = ctx->b_per_p > 0;
priv->sei_needed = 1;
}
vpic->CurrPic = (VAPictureH264) {
.picture_id = pic->recon_surface,
.frame_idx = priv->frame_num,
.flags = 0,
.TopFieldOrderCnt = priv->pic_order_cnt,
.BottomFieldOrderCnt = priv->pic_order_cnt,
};
for (i = 0; i < pic->nb_refs; i++) {
VAAPIEncodePicture *ref = pic->refs[i];
unsigned int frame_num = (ref->encode_order - priv->last_idr_frame) &
((1 << (4 + sps->log2_max_frame_num_minus4)) - 1);
unsigned int pic_order_cnt = ref->display_order - priv->last_idr_frame;
av_assert0(ref && ref->encode_order < pic->encode_order);
vpic->ReferenceFrames[i] = (VAPictureH264) {
.picture_id = ref->recon_surface,
.frame_idx = frame_num,
.flags = VA_PICTURE_H264_SHORT_TERM_REFERENCE,
.TopFieldOrderCnt = pic_order_cnt,
.BottomFieldOrderCnt = pic_order_cnt,
};
}
for (; i < FF_ARRAY_ELEMS(vpic->ReferenceFrames); i++) {
vpic->ReferenceFrames[i] = (VAPictureH264) {
.picture_id = VA_INVALID_ID,
.flags = VA_PICTURE_H264_INVALID,
};
}
vpic->coded_buf = pic->output_buffer;
vpic->frame_num = priv->frame_num;
vpic->pic_fields.bits.idr_pic_flag = (pic->type == PICTURE_TYPE_IDR);
vpic->pic_fields.bits.reference_pic_flag = (pic->type != PICTURE_TYPE_B);
pic->nb_slices = 1;
return 0;
}
static int vaapi_encode_h264_init_slice_params(AVCodecContext *avctx,
VAAPIEncodePicture *pic,
VAAPIEncodeSlice *slice)
{
VAAPIEncodeContext *ctx = avctx->priv_data;
VAAPIEncodeH264Context *priv = ctx->priv_data;
H264RawSPS *sps = &priv->sps;
H264RawPPS *pps = &priv->pps;
H264RawSliceHeader *sh = &priv->slice.header;
VAEncPictureParameterBufferH264 *vpic = pic->codec_picture_params;
VAEncSliceParameterBufferH264 *vslice = slice->codec_slice_params;
int i;
if (pic->type == PICTURE_TYPE_IDR) {
sh->nal_unit_header.nal_unit_type = H264_NAL_IDR_SLICE;
sh->nal_unit_header.nal_ref_idc = 3;
} else {
sh->nal_unit_header.nal_unit_type = H264_NAL_SLICE;
sh->nal_unit_header.nal_ref_idc = pic->type != PICTURE_TYPE_B;
}
// Only one slice per frame.
sh->first_mb_in_slice = 0;
sh->slice_type = priv->slice_type;
sh->pic_parameter_set_id = pps->pic_parameter_set_id;
sh->frame_num = priv->frame_num;
sh->idr_pic_id = priv->idr_pic_count;
sh->pic_order_cnt_lsb = priv->pic_order_cnt &
((1 << (4 + sps->log2_max_pic_order_cnt_lsb_minus4)) - 1);
sh->direct_spatial_mv_pred_flag = 1;
if (pic->type == PICTURE_TYPE_B)
sh->slice_qp_delta = priv->fixed_qp_b - (pps->pic_init_qp_minus26 + 26);
else if (pic->type == PICTURE_TYPE_P)
sh->slice_qp_delta = priv->fixed_qp_p - (pps->pic_init_qp_minus26 + 26);
else
sh->slice_qp_delta = priv->fixed_qp_idr - (pps->pic_init_qp_minus26 + 26);
vslice->macroblock_address = sh->first_mb_in_slice;
vslice->num_macroblocks = priv->mb_width * priv->mb_height;
vslice->macroblock_info = VA_INVALID_ID;
vslice->slice_type = sh->slice_type % 5;
vslice->pic_parameter_set_id = sh->pic_parameter_set_id;
vslice->idr_pic_id = sh->idr_pic_id;
vslice->pic_order_cnt_lsb = sh->pic_order_cnt_lsb;
vslice->direct_spatial_mv_pred_flag = sh->direct_spatial_mv_pred_flag;
for (i = 0; i < FF_ARRAY_ELEMS(vslice->RefPicList0); i++) {
vslice->RefPicList0[i].picture_id = VA_INVALID_ID;
vslice->RefPicList0[i].flags = VA_PICTURE_H264_INVALID;
vslice->RefPicList1[i].picture_id = VA_INVALID_ID;
vslice->RefPicList1[i].flags = VA_PICTURE_H264_INVALID;
}
av_assert0(pic->nb_refs <= 2);
if (pic->nb_refs >= 1) {
// Backward reference for P- or B-frame.
av_assert0(pic->type == PICTURE_TYPE_P ||
pic->type == PICTURE_TYPE_B);
vslice->RefPicList0[0] = vpic->ReferenceFrames[0];
}
if (pic->nb_refs >= 2) {
// Forward reference for B-frame.
av_assert0(pic->type == PICTURE_TYPE_B);
vslice->RefPicList1[0] = vpic->ReferenceFrames[1];
}
vslice->slice_qp_delta = sh->slice_qp_delta;
return 0;
}
static av_cold int vaapi_encode_h264_configure(AVCodecContext *avctx)
{
VAAPIEncodeContext *ctx = avctx->priv_data;
VAAPIEncodeH264Context *priv = ctx->priv_data;
VAAPIEncodeH264Options *opt = ctx->codec_options;
int err;
err = ff_cbs_init(&priv->cbc, AV_CODEC_ID_H264, avctx);
if (err < 0)
return err;
priv->mb_width = FFALIGN(avctx->width, 16) / 16;
priv->mb_height = FFALIGN(avctx->height, 16) / 16;
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;
opt->sei &= ~SEI_TIMING;
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 ||
ctx->va_rc_mode == VA_RC_VBR) {
// These still need to be set for pic_init_qp/slice_qp_delta.
priv->fixed_qp_idr = 26;
priv->fixed_qp_p = 26;
priv->fixed_qp_b = 26;
av_log(avctx, AV_LOG_DEBUG, "Using %s-bitrate = %d bps.\n",
ctx->va_rc_mode == VA_RC_CBR ? "constant" : "variable",
avctx->bit_rate);
} else {
av_assert0(0 && "Invalid RC mode.");
}
if (avctx->compression_level == FF_COMPRESSION_DEFAULT)
avctx->compression_level = opt->quality;
if (opt->sei & SEI_IDENTIFIER) {
const char *lavc = LIBAVCODEC_IDENT;
const char *vaapi = VA_VERSION_S;
const char *driver;
int len;
memcpy(priv->identifier.uuid_iso_iec_11578,
vaapi_encode_h264_sei_identifier_uuid,
sizeof(priv->identifier.uuid_iso_iec_11578));
driver = vaQueryVendorString(ctx->hwctx->display);
if (!driver)
driver = "unknown driver";
len = snprintf(NULL, 0, "%s / VAAPI %s / %s", lavc, vaapi, driver);
if (len >= 0) {
priv->identifier_string = av_malloc(len + 1);
if (!priv->identifier_string)
return AVERROR(ENOMEM);
snprintf(priv->identifier_string, len + 1,
"%s / VAAPI %s / %s", lavc, vaapi, driver);
priv->identifier.data = priv->identifier_string;
priv->identifier.data_length = len + 1;
}
}
return 0;
}
static const VAAPIEncodeType vaapi_encode_type_h264 = {
.priv_data_size = sizeof(VAAPIEncodeH264Context),
.configure = &vaapi_encode_h264_configure,
.sequence_params_size = sizeof(VAEncSequenceParameterBufferH264),
.init_sequence_params = &vaapi_encode_h264_init_sequence_params,
.picture_params_size = sizeof(VAEncPictureParameterBufferH264),
.init_picture_params = &vaapi_encode_h264_init_picture_params,
.slice_params_size = sizeof(VAEncSliceParameterBufferH264),
.init_slice_params = &vaapi_encode_h264_init_slice_params,
.sequence_header_type = VAEncPackedHeaderSequence,
.write_sequence_header = &vaapi_encode_h264_write_sequence_header,
.slice_header_type = VAEncPackedHeaderH264_Slice,
.write_slice_header = &vaapi_encode_h264_write_slice_header,
.write_extra_header = &vaapi_encode_h264_write_extra_header,
};
static av_cold int vaapi_encode_h264_init(AVCodecContext *avctx)
{
VAAPIEncodeContext *ctx = avctx->priv_data;
VAAPIEncodeH264Options *opt =
(VAAPIEncodeH264Options*)ctx->codec_options_data;
ctx->codec = &vaapi_encode_type_h264;
switch (avctx->profile) {
case FF_PROFILE_H264_BASELINE:
av_log(avctx, AV_LOG_WARNING, "H.264 baseline profile is not "
"supported, using constrained baseline profile instead.\n");
avctx->profile = FF_PROFILE_H264_CONSTRAINED_BASELINE;
case FF_PROFILE_H264_CONSTRAINED_BASELINE:
ctx->va_profile = VAProfileH264ConstrainedBaseline;
break;
case FF_PROFILE_H264_MAIN:
ctx->va_profile = VAProfileH264Main;
break;
case FF_PROFILE_H264_EXTENDED:
av_log(avctx, AV_LOG_ERROR, "H.264 extended profile "
"is not supported.\n");
return AVERROR_PATCHWELCOME;
case FF_PROFILE_UNKNOWN:
case FF_PROFILE_H264_HIGH:
ctx->va_profile = VAProfileH264High;
break;
case FF_PROFILE_H264_HIGH_10:
case FF_PROFILE_H264_HIGH_10_INTRA:
av_log(avctx, AV_LOG_ERROR, "H.264 10-bit profiles "
"are not supported.\n");
return AVERROR_PATCHWELCOME;
case FF_PROFILE_H264_HIGH_422:
case FF_PROFILE_H264_HIGH_422_INTRA:
case FF_PROFILE_H264_HIGH_444:
case FF_PROFILE_H264_HIGH_444_PREDICTIVE:
case FF_PROFILE_H264_HIGH_444_INTRA:
case FF_PROFILE_H264_CAVLC_444:
av_log(avctx, AV_LOG_ERROR, "H.264 non-4:2:0 profiles "
"are not supported.\n");
return AVERROR_PATCHWELCOME;
default:
av_log(avctx, AV_LOG_ERROR, "Unknown H.264 profile %d.\n",
avctx->profile);
return AVERROR(EINVAL);
}
if (opt->low_power) {
#if VA_CHECK_VERSION(0, 39, 2)
ctx->va_entrypoint = VAEntrypointEncSliceLP;
#else
av_log(avctx, AV_LOG_ERROR, "Low-power encoding is not "
"supported with this VAAPI version.\n");
return AVERROR(EINVAL);
#endif
} else {
ctx->va_entrypoint = VAEntrypointEncSlice;
}
// Only 8-bit encode is supported.
ctx->va_rt_format = VA_RT_FORMAT_YUV420;
if (avctx->bit_rate > 0) {
if (avctx->rc_max_rate == avctx->bit_rate)
ctx->va_rc_mode = VA_RC_CBR;
else
ctx->va_rc_mode = VA_RC_VBR;
} else
ctx->va_rc_mode = VA_RC_CQP;
ctx->va_packed_headers =
VA_ENC_PACKED_HEADER_SEQUENCE | // SPS and PPS.
VA_ENC_PACKED_HEADER_SLICE | // Slice headers.
VA_ENC_PACKED_HEADER_MISC; // SEI.
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_h264_close(AVCodecContext *avctx)
{
VAAPIEncodeContext *ctx = avctx->priv_data;
VAAPIEncodeH264Context *priv = ctx->priv_data;
if (priv) {
ff_cbs_close(&priv->cbc);
av_freep(&priv->identifier_string);
}
return ff_vaapi_encode_close(avctx);
}
#define OFFSET(x) (offsetof(VAAPIEncodeContext, codec_options_data) + \
offsetof(VAAPIEncodeH264Options, x))
#define FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM)
static const AVOption vaapi_encode_h264_options[] = {
{ "qp", "Constant QP (for P-frames; scaled by qfactor/qoffset for I/B)",
OFFSET(qp), AV_OPT_TYPE_INT, { .i64 = 20 }, 0, 52, FLAGS },
{ "quality", "Set encode quality (trades off against speed, higher is faster)",
OFFSET(quality), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 8, FLAGS },
{ "low_power", "Use low-power encoding mode (experimental: only supported "
"on some platforms, does not support all features)",
OFFSET(low_power), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, FLAGS },
{ "aud", "Include AUD",
OFFSET(aud), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, FLAGS },
{ "sei", "Set SEI to include",
OFFSET(sei), AV_OPT_TYPE_FLAGS,
{ .i64 = SEI_IDENTIFIER | SEI_TIMING | SEI_RECOVERY_POINT },
0, INT_MAX, FLAGS, "sei" },
{ "identifier", "Include encoder version identifier",
0, AV_OPT_TYPE_CONST, { .i64 = SEI_IDENTIFIER },
INT_MIN, INT_MAX, FLAGS, "sei" },
{ "timing", "Include timing parameters (buffering_period and pic_timing)",
0, AV_OPT_TYPE_CONST, { .i64 = SEI_TIMING },
INT_MIN, INT_MAX, FLAGS, "sei" },
{ "recovery_point", "Include recovery points where appropriate",
0, AV_OPT_TYPE_CONST, { .i64 = SEI_RECOVERY_POINT },
INT_MIN, INT_MAX, FLAGS, "sei" },
{ NULL },
};
static const AVCodecDefault vaapi_encode_h264_defaults[] = {
{ "profile", "100" },
{ "level", "51" },
{ "b", "0" },
{ "bf", "2" },
{ "g", "120" },
{ "i_qfactor", "1.0" },
{ "i_qoffset", "0.0" },
{ "b_qfactor", "1.2" },
{ "b_qoffset", "0.0" },
{ "qmin", "0" },
{ NULL },
};
static const AVClass vaapi_encode_h264_class = {
.class_name = "h264_vaapi",
.item_name = av_default_item_name,
.option = vaapi_encode_h264_options,
.version = LIBAVUTIL_VERSION_INT,
};
AVCodec ff_h264_vaapi_encoder = {
.name = "h264_vaapi",
.long_name = NULL_IF_CONFIG_SMALL("H.264/AVC (VAAPI)"),
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_H264,
.priv_data_size = (sizeof(VAAPIEncodeContext) +
sizeof(VAAPIEncodeH264Options)),
.init = &vaapi_encode_h264_init,
.encode2 = &ff_vaapi_encode2,
.close = &vaapi_encode_h264_close,
.priv_class = &vaapi_encode_h264_class,
.capabilities = AV_CODEC_CAP_DELAY,
.defaults = vaapi_encode_h264_defaults,
.pix_fmts = (const enum AVPixelFormat[]) {
AV_PIX_FMT_VAAPI,
AV_PIX_FMT_NONE,
},
};