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ffmpeg/libavcodec/vaapi_encode_h264.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 <va/va.h>
#include <va/va_enc_h264.h>
#include "libavutil/avassert.h"
#include "libavutil/internal.h"
#include "libavutil/opt.h"
#include "libavutil/pixfmt.h"
#include "avcodec.h"
#include "h264.h"
#include "h264_sei.h"
#include "internal.h"
#include "vaapi_encode.h"
#include "vaapi_encode_h26x.h"
enum {
SLICE_TYPE_P = 0,
SLICE_TYPE_B = 1,
SLICE_TYPE_I = 2,
SLICE_TYPE_SP = 3,
SLICE_TYPE_SI = 4,
};
// This structure contains all possibly-useful per-sequence syntax elements
// which are not already contained in the various VAAPI structures.
typedef struct VAAPIEncodeH264MiscSequenceParams {
unsigned int profile_idc;
char constraint_set0_flag;
char constraint_set1_flag;
char constraint_set2_flag;
char constraint_set3_flag;
char constraint_set4_flag;
char constraint_set5_flag;
char separate_colour_plane_flag;
char qpprime_y_zero_transform_bypass_flag;
char gaps_in_frame_num_allowed_flag;
char delta_pic_order_always_zero_flag;
char bottom_field_pic_order_in_frame_present_flag;
unsigned int num_slice_groups_minus1;
unsigned int slice_group_map_type;
int pic_init_qs_minus26;
char overscan_info_present_flag;
char overscan_appropriate_flag;
char video_signal_type_present_flag;
unsigned int video_format;
char video_full_range_flag;
char colour_description_present_flag;
unsigned int colour_primaries;
unsigned int transfer_characteristics;
unsigned int matrix_coefficients;
char chroma_loc_info_present_flag;
unsigned int chroma_sample_loc_type_top_field;
unsigned int chroma_sample_loc_type_bottom_field;
// Some timing elements are in VAEncSequenceParameterBufferH264.
char fixed_frame_rate_flag;
char nal_hrd_parameters_present_flag;
char vcl_hrd_parameters_present_flag;
char low_delay_hrd_flag;
char pic_struct_present_flag;
char motion_vectors_over_pic_boundaries_flag;
unsigned int max_bytes_per_pic_denom;
unsigned int max_bits_per_mb_denom;
unsigned int max_num_reorder_frames;
unsigned int max_dec_pic_buffering;
unsigned int cpb_cnt_minus1;
unsigned int bit_rate_scale;
unsigned int cpb_size_scale;
unsigned int bit_rate_value_minus1[32];
unsigned int cpb_size_value_minus1[32];
char cbr_flag[32];
unsigned int initial_cpb_removal_delay_length_minus1;
unsigned int cpb_removal_delay_length_minus1;
unsigned int dpb_output_delay_length_minus1;
unsigned int time_offset_length;
unsigned int initial_cpb_removal_delay;
unsigned int initial_cpb_removal_delay_offset;
unsigned int pic_struct;
} VAAPIEncodeH264MiscSequenceParams;
// This structure contains all possibly-useful per-slice syntax elements
// which are not already contained in the various VAAPI structures.
typedef struct VAAPIEncodeH264MiscSliceParams {
unsigned int nal_unit_type;
unsigned int nal_ref_idc;
unsigned int colour_plane_id;
char field_pic_flag;
char bottom_field_flag;
unsigned int redundant_pic_cnt;
char sp_for_switch_flag;
int slice_qs_delta;
char ref_pic_list_modification_flag_l0;
char ref_pic_list_modification_flag_l1;
char no_output_of_prior_pics_flag;
char long_term_reference_flag;
char adaptive_ref_pic_marking_mode_flag;
} VAAPIEncodeH264MiscSliceParams;
typedef struct VAAPIEncodeH264Slice {
VAAPIEncodeH264MiscSliceParams misc_slice_params;
} VAAPIEncodeH264Slice;
typedef struct VAAPIEncodeH264Context {
VAAPIEncodeH264MiscSequenceParams misc_sequence_params;
int mb_width;
int mb_height;
int fixed_qp_idr;
int fixed_qp_p;
int fixed_qp_b;
int next_frame_num;
int64_t last_idr_frame;
int64_t idr_pic_count;
int cpb_delay;
int dpb_delay;
// Rate control configuration.
int send_timing_sei;
#if VA_CHECK_VERSION(0, 36, 0)
// Speed-quality tradeoff setting.
struct {
VAEncMiscParameterBuffer misc;
VAEncMiscParameterBufferQualityLevel quality;
} quality_params;
#endif
} VAAPIEncodeH264Context;
typedef struct VAAPIEncodeH264Options {
int qp;
int quality;
int low_power;
} VAAPIEncodeH264Options;
#define vseq_var(name) vseq->name, name
#define vseq_field(name) vseq->seq_fields.bits.name, name
#define vvui_field(name) vseq->vui_fields.bits.name, name
#define vpic_var(name) vpic->name, name
#define vpic_field(name) vpic->pic_fields.bits.name, name
#define vslice_var(name) vslice->name, name
#define vslice_field(name) vslice->slice_fields.bits.name, name
#define mseq_var(name) mseq->name, name
#define mslice_var(name) mslice->name, name
static void vaapi_encode_h264_write_nal_header(PutBitContext *pbc,
int nal_unit_type, int nal_ref_idc)
{
u(1, 0, forbidden_zero_bit);
u(2, nal_ref_idc, nal_ref_idc);
u(5, nal_unit_type, nal_unit_type);
}
static void vaapi_encode_h264_write_trailing_rbsp(PutBitContext *pbc)
{
u(1, 1, rbsp_stop_one_bit);
while (put_bits_count(pbc) & 7)
u(1, 0, rbsp_alignment_zero_bit);
}
static void vaapi_encode_h264_write_vui(PutBitContext *pbc,
VAAPIEncodeContext *ctx)
{
VAEncSequenceParameterBufferH264 *vseq = ctx->codec_sequence_params;
VAAPIEncodeH264Context *priv = ctx->priv_data;
VAAPIEncodeH264MiscSequenceParams *mseq = &priv->misc_sequence_params;
int i;
u(1, vvui_field(aspect_ratio_info_present_flag));
if (vseq->vui_fields.bits.aspect_ratio_info_present_flag) {
u(8, vseq_var(aspect_ratio_idc));
if (vseq->aspect_ratio_idc == 255) {
u(16, vseq_var(sar_width));
u(16, vseq_var(sar_height));
}
}
u(1, mseq_var(overscan_info_present_flag));
if (mseq->overscan_info_present_flag)
u(1, mseq_var(overscan_appropriate_flag));
u(1, mseq_var(video_signal_type_present_flag));
if (mseq->video_signal_type_present_flag) {
u(3, mseq_var(video_format));
u(1, mseq_var(video_full_range_flag));
u(1, mseq_var(colour_description_present_flag));
if (mseq->colour_description_present_flag) {
u(8, mseq_var(colour_primaries));
u(8, mseq_var(transfer_characteristics));
u(8, mseq_var(matrix_coefficients));
}
}
u(1, mseq_var(chroma_loc_info_present_flag));
if (mseq->chroma_loc_info_present_flag) {
ue(mseq_var(chroma_sample_loc_type_top_field));
ue(mseq_var(chroma_sample_loc_type_bottom_field));
}
u(1, vvui_field(timing_info_present_flag));
if (vseq->vui_fields.bits.timing_info_present_flag) {
u(32, vseq_var(num_units_in_tick));
u(32, vseq_var(time_scale));
u(1, mseq_var(fixed_frame_rate_flag));
}
u(1, mseq_var(nal_hrd_parameters_present_flag));
if (mseq->nal_hrd_parameters_present_flag) {
ue(mseq_var(cpb_cnt_minus1));
u(4, mseq_var(bit_rate_scale));
u(4, mseq_var(cpb_size_scale));
for (i = 0; i <= mseq->cpb_cnt_minus1; i++) {
ue(mseq_var(bit_rate_value_minus1[i]));
ue(mseq_var(cpb_size_value_minus1[i]));
u(1, mseq_var(cbr_flag[i]));
}
u(5, mseq_var(initial_cpb_removal_delay_length_minus1));
u(5, mseq_var(cpb_removal_delay_length_minus1));
u(5, mseq_var(dpb_output_delay_length_minus1));
u(5, mseq_var(time_offset_length));
}
u(1, mseq_var(vcl_hrd_parameters_present_flag));
if (mseq->vcl_hrd_parameters_present_flag) {
av_assert0(0 && "vcl hrd parameters not supported");
}
if (mseq->nal_hrd_parameters_present_flag ||
mseq->vcl_hrd_parameters_present_flag)
u(1, mseq_var(low_delay_hrd_flag));
u(1, mseq_var(pic_struct_present_flag));
u(1, vvui_field(bitstream_restriction_flag));
if (vseq->vui_fields.bits.bitstream_restriction_flag) {
u(1, mseq_var(motion_vectors_over_pic_boundaries_flag));
ue(mseq_var(max_bytes_per_pic_denom));
ue(mseq_var(max_bits_per_mb_denom));
ue(vvui_field(log2_max_mv_length_horizontal));
ue(vvui_field(log2_max_mv_length_vertical));
ue(mseq_var(max_num_reorder_frames));
ue(mseq_var(max_dec_pic_buffering));
}
}
static void vaapi_encode_h264_write_sps(PutBitContext *pbc,
VAAPIEncodeContext *ctx)
{
VAEncSequenceParameterBufferH264 *vseq = ctx->codec_sequence_params;
VAAPIEncodeH264Context *priv = ctx->priv_data;
VAAPIEncodeH264MiscSequenceParams *mseq = &priv->misc_sequence_params;
int i;
vaapi_encode_h264_write_nal_header(pbc, H264_NAL_SPS, 3);
u(8, mseq_var(profile_idc));
u(1, mseq_var(constraint_set0_flag));
u(1, mseq_var(constraint_set1_flag));
u(1, mseq_var(constraint_set2_flag));
u(1, mseq_var(constraint_set3_flag));
u(1, mseq_var(constraint_set4_flag));
u(1, mseq_var(constraint_set5_flag));
u(2, 0, reserved_zero_2bits);
u(8, vseq_var(level_idc));
ue(vseq_var(seq_parameter_set_id));
if (mseq->profile_idc == 100 || mseq->profile_idc == 110 ||
mseq->profile_idc == 122 || mseq->profile_idc == 244 ||
mseq->profile_idc == 44 || mseq->profile_idc == 83 ||
mseq->profile_idc == 86 || mseq->profile_idc == 118 ||
mseq->profile_idc == 128 || mseq->profile_idc == 138) {
ue(vseq_field(chroma_format_idc));
if (vseq->seq_fields.bits.chroma_format_idc == 3)
u(1, mseq_var(separate_colour_plane_flag));
ue(vseq_var(bit_depth_luma_minus8));
ue(vseq_var(bit_depth_chroma_minus8));
u(1, mseq_var(qpprime_y_zero_transform_bypass_flag));
u(1, vseq_field(seq_scaling_matrix_present_flag));
if (vseq->seq_fields.bits.seq_scaling_matrix_present_flag) {
av_assert0(0 && "scaling matrices not supported");
}
}
ue(vseq_field(log2_max_frame_num_minus4));
ue(vseq_field(pic_order_cnt_type));
if (vseq->seq_fields.bits.pic_order_cnt_type == 0) {
ue(vseq_field(log2_max_pic_order_cnt_lsb_minus4));
} else if (vseq->seq_fields.bits.pic_order_cnt_type == 1) {
u(1, mseq_var(delta_pic_order_always_zero_flag));
se(vseq_var(offset_for_non_ref_pic));
se(vseq_var(offset_for_top_to_bottom_field));
ue(vseq_var(num_ref_frames_in_pic_order_cnt_cycle));
for (i = 0; i < vseq->num_ref_frames_in_pic_order_cnt_cycle; i++)
se(vseq_var(offset_for_ref_frame[i]));
}
ue(vseq_var(max_num_ref_frames));
u(1, mseq_var(gaps_in_frame_num_allowed_flag));
ue(vseq->picture_width_in_mbs - 1, pic_width_in_mbs_minus1);
ue(vseq->picture_height_in_mbs - 1, pic_height_in_mbs_minus1);
u(1, vseq_field(frame_mbs_only_flag));
if (!vseq->seq_fields.bits.frame_mbs_only_flag)
u(1, vseq_field(mb_adaptive_frame_field_flag));
u(1, vseq_field(direct_8x8_inference_flag));
u(1, vseq_var(frame_cropping_flag));
if (vseq->frame_cropping_flag) {
ue(vseq_var(frame_crop_left_offset));
ue(vseq_var(frame_crop_right_offset));
ue(vseq_var(frame_crop_top_offset));
ue(vseq_var(frame_crop_bottom_offset));
}
u(1, vseq_var(vui_parameters_present_flag));
if (vseq->vui_parameters_present_flag)
vaapi_encode_h264_write_vui(pbc, ctx);
vaapi_encode_h264_write_trailing_rbsp(pbc);
}
static void vaapi_encode_h264_write_pps(PutBitContext *pbc,
VAAPIEncodeContext *ctx)
{
VAEncPictureParameterBufferH264 *vpic = ctx->codec_picture_params;
VAAPIEncodeH264Context *priv = ctx->priv_data;
VAAPIEncodeH264MiscSequenceParams *mseq = &priv->misc_sequence_params;
vaapi_encode_h264_write_nal_header(pbc, H264_NAL_PPS, 3);
ue(vpic_var(pic_parameter_set_id));
ue(vpic_var(seq_parameter_set_id));
u(1, vpic_field(entropy_coding_mode_flag));
u(1, mseq_var(bottom_field_pic_order_in_frame_present_flag));
ue(mseq_var(num_slice_groups_minus1));
if (mseq->num_slice_groups_minus1 > 0) {
ue(mseq_var(slice_group_map_type));
av_assert0(0 && "slice groups not supported");
}
ue(vpic_var(num_ref_idx_l0_active_minus1));
ue(vpic_var(num_ref_idx_l1_active_minus1));
u(1, vpic_field(weighted_pred_flag));
u(2, vpic_field(weighted_bipred_idc));
se(vpic->pic_init_qp - 26, pic_init_qp_minus26);
se(mseq_var(pic_init_qs_minus26));
se(vpic_var(chroma_qp_index_offset));
u(1, vpic_field(deblocking_filter_control_present_flag));
u(1, vpic_field(constrained_intra_pred_flag));
u(1, vpic_field(redundant_pic_cnt_present_flag));
u(1, vpic_field(transform_8x8_mode_flag));
u(1, vpic_field(pic_scaling_matrix_present_flag));
if (vpic->pic_fields.bits.pic_scaling_matrix_present_flag) {
av_assert0(0 && "scaling matrices not supported");
}
se(vpic_var(second_chroma_qp_index_offset));
vaapi_encode_h264_write_trailing_rbsp(pbc);
}
static void vaapi_encode_h264_write_slice_header2(PutBitContext *pbc,
VAAPIEncodeContext *ctx,
VAAPIEncodePicture *pic,
VAAPIEncodeSlice *slice)
{
VAEncSequenceParameterBufferH264 *vseq = ctx->codec_sequence_params;
VAEncPictureParameterBufferH264 *vpic = pic->codec_picture_params;
VAEncSliceParameterBufferH264 *vslice = slice->codec_slice_params;
VAAPIEncodeH264Context *priv = ctx->priv_data;
VAAPIEncodeH264MiscSequenceParams *mseq = &priv->misc_sequence_params;
VAAPIEncodeH264Slice *pslice = slice->priv_data;
VAAPIEncodeH264MiscSliceParams *mslice = &pslice->misc_slice_params;
vaapi_encode_h264_write_nal_header(pbc, mslice->nal_unit_type,
mslice->nal_ref_idc);
ue(vslice->macroblock_address, first_mb_in_slice);
ue(vslice_var(slice_type));
ue(vpic_var(pic_parameter_set_id));
if (mseq->separate_colour_plane_flag) {
u(2, mslice_var(colour_plane_id));
}
u(4 + vseq->seq_fields.bits.log2_max_frame_num_minus4,
(vpic->frame_num &
((1 << (4 + vseq->seq_fields.bits.log2_max_frame_num_minus4)) - 1)),
frame_num);
if (!vseq->seq_fields.bits.frame_mbs_only_flag) {
u(1, mslice_var(field_pic_flag));
if (mslice->field_pic_flag)
u(1, mslice_var(bottom_field_flag));
}
if (vpic->pic_fields.bits.idr_pic_flag) {
ue(vslice_var(idr_pic_id));
}
if (vseq->seq_fields.bits.pic_order_cnt_type == 0) {
u(4 + vseq->seq_fields.bits.log2_max_pic_order_cnt_lsb_minus4,
vslice_var(pic_order_cnt_lsb));
if (mseq->bottom_field_pic_order_in_frame_present_flag &&
!mslice->field_pic_flag) {
se(vslice_var(delta_pic_order_cnt_bottom));
}
}
if (vseq->seq_fields.bits.pic_order_cnt_type == 1 &&
!vseq->seq_fields.bits.delta_pic_order_always_zero_flag) {
se(vslice_var(delta_pic_order_cnt[0]));
if (mseq->bottom_field_pic_order_in_frame_present_flag &&
!mslice->field_pic_flag) {
se(vslice_var(delta_pic_order_cnt[1]));
}
}
if (vpic->pic_fields.bits.redundant_pic_cnt_present_flag) {
ue(mslice_var(redundant_pic_cnt));
}
if (vslice->slice_type == SLICE_TYPE_B) {
u(1, vslice_var(direct_spatial_mv_pred_flag));
}
if (vslice->slice_type == SLICE_TYPE_P ||
vslice->slice_type == SLICE_TYPE_SP ||
vslice->slice_type == SLICE_TYPE_B) {
u(1, vslice_var(num_ref_idx_active_override_flag));
if (vslice->num_ref_idx_active_override_flag) {
ue(vslice_var(num_ref_idx_l0_active_minus1));
if (vslice->slice_type == SLICE_TYPE_B)
ue(vslice_var(num_ref_idx_l1_active_minus1));
}
}
if (mslice->nal_unit_type == 20 || mslice->nal_unit_type == 21) {
av_assert0(0 && "no MVC support");
} else {
if (vslice->slice_type % 5 != 2 && vslice->slice_type % 5 != 4) {
u(1, mslice_var(ref_pic_list_modification_flag_l0));
if (mslice->ref_pic_list_modification_flag_l0) {
av_assert0(0 && "ref pic list modification");
}
}
if (vslice->slice_type % 5 == 1) {
u(1, mslice_var(ref_pic_list_modification_flag_l1));
if (mslice->ref_pic_list_modification_flag_l1) {
av_assert0(0 && "ref pic list modification");
}
}
}
if ((vpic->pic_fields.bits.weighted_pred_flag &&
(vslice->slice_type == SLICE_TYPE_P ||
vslice->slice_type == SLICE_TYPE_SP)) ||
(vpic->pic_fields.bits.weighted_bipred_idc == 1 &&
vslice->slice_type == SLICE_TYPE_B)) {
av_assert0(0 && "prediction weights not supported");
}
av_assert0(mslice->nal_ref_idc > 0 ==
vpic->pic_fields.bits.reference_pic_flag);
if (mslice->nal_ref_idc != 0) {
if (vpic->pic_fields.bits.idr_pic_flag) {
u(1, mslice_var(no_output_of_prior_pics_flag));
u(1, mslice_var(long_term_reference_flag));
} else {
u(1, mslice_var(adaptive_ref_pic_marking_mode_flag));
if (mslice->adaptive_ref_pic_marking_mode_flag) {
av_assert0(0 && "MMCOs not supported");
}
}
}
if (vpic->pic_fields.bits.entropy_coding_mode_flag &&
vslice->slice_type != SLICE_TYPE_I &&
vslice->slice_type != SLICE_TYPE_SI) {
ue(vslice_var(cabac_init_idc));
}
se(vslice_var(slice_qp_delta));
if (vslice->slice_type == SLICE_TYPE_SP ||
vslice->slice_type == SLICE_TYPE_SI) {
if (vslice->slice_type == SLICE_TYPE_SP)
u(1, mslice_var(sp_for_switch_flag));
se(mslice_var(slice_qs_delta));
}
if (vpic->pic_fields.bits.deblocking_filter_control_present_flag) {
ue(vslice_var(disable_deblocking_filter_idc));
if (vslice->disable_deblocking_filter_idc != 1) {
se(vslice_var(slice_alpha_c0_offset_div2));
se(vslice_var(slice_beta_offset_div2));
}
}
if (mseq->num_slice_groups_minus1 > 0 &&
mseq->slice_group_map_type >= 3 && mseq->slice_group_map_type <= 5) {
av_assert0(0 && "slice groups not supported");
}
// No alignment - this need not be a byte boundary.
}
static void vaapi_encode_h264_write_buffering_period(PutBitContext *pbc,
VAAPIEncodeContext *ctx,
VAAPIEncodePicture *pic)
{
VAAPIEncodeH264Context *priv = ctx->priv_data;
VAAPIEncodeH264MiscSequenceParams *mseq = &priv->misc_sequence_params;
VAEncPictureParameterBufferH264 *vpic = pic->codec_picture_params;
int i;
ue(vpic_var(seq_parameter_set_id));
if (mseq->nal_hrd_parameters_present_flag) {
for (i = 0; i <= mseq->cpb_cnt_minus1; i++) {
u(mseq->initial_cpb_removal_delay_length_minus1 + 1,
mseq_var(initial_cpb_removal_delay));
u(mseq->initial_cpb_removal_delay_length_minus1 + 1,
mseq_var(initial_cpb_removal_delay_offset));
}
}
if (mseq->vcl_hrd_parameters_present_flag) {
av_assert0(0 && "vcl hrd parameters not supported");
}
}
static void vaapi_encode_h264_write_pic_timing(PutBitContext *pbc,
VAAPIEncodeContext *ctx,
VAAPIEncodePicture *pic)
{
VAEncSequenceParameterBufferH264 *vseq = ctx->codec_sequence_params;
VAAPIEncodeH264Context *priv = ctx->priv_data;
VAAPIEncodeH264MiscSequenceParams *mseq = &priv->misc_sequence_params;
int i, num_clock_ts;
if (mseq->nal_hrd_parameters_present_flag ||
mseq->vcl_hrd_parameters_present_flag) {
u(mseq->cpb_removal_delay_length_minus1 + 1,
2 * vseq->num_units_in_tick * priv->cpb_delay,
cpb_removal_delay);
u(mseq->dpb_output_delay_length_minus1 + 1,
2 * vseq->num_units_in_tick * priv->dpb_delay,
dpb_output_delay);
}
if (mseq->pic_struct_present_flag) {
u(4, mseq_var(pic_struct));
num_clock_ts = (mseq->pic_struct <= 2 ? 1 :
mseq->pic_struct <= 4 ? 2 :
mseq->pic_struct <= 8 ? 3 : 0);
for (i = 0; i < num_clock_ts; i++) {
u(1, 0, clock_timestamp_flag[i]);
// No full timestamp information.
}
}
}
static void vaapi_encode_h264_write_identifier(PutBitContext *pbc,
VAAPIEncodeContext *ctx,
VAAPIEncodePicture *pic)
{
const char *lavc = LIBAVCODEC_IDENT;
const char *vaapi = VA_VERSION_S;
const char *driver = vaQueryVendorString(ctx->hwctx->display);
char tmp[256];
int i;
// Random (version 4) ISO 11578 UUID.
uint8_t uuid[16] = {
0x59, 0x94, 0x8b, 0x28, 0x11, 0xec, 0x45, 0xaf,
0x96, 0x75, 0x19, 0xd4, 0x1f, 0xea, 0xa9, 0x4d,
};
for (i = 0; i < 16; i++)
u(8, uuid[i], uuid_iso_iec_11578);
snprintf(tmp, sizeof(tmp), "%s / VAAPI %s / %s", lavc, vaapi, driver);
for (i = 0; i < sizeof(tmp) && tmp[i]; i++)
u(8, tmp[i], user_data_payload_byte);
}
static void vaapi_encode_h264_write_sei(PutBitContext *pbc,
VAAPIEncodeContext *ctx,
VAAPIEncodePicture *pic)
{
VAAPIEncodeH264Context *priv = ctx->priv_data;
PutBitContext payload_bits;
char payload[256];
int payload_type, payload_size, i;
void (*write_payload)(PutBitContext *pbc,
VAAPIEncodeContext *ctx,
VAAPIEncodePicture *pic) = NULL;
vaapi_encode_h264_write_nal_header(pbc, H264_NAL_SEI, 0);
for (payload_type = 0; payload_type < 64; payload_type++) {
switch (payload_type) {
case SEI_TYPE_BUFFERING_PERIOD:
if (!priv->send_timing_sei ||
pic->type != PICTURE_TYPE_IDR)
continue;
write_payload = &vaapi_encode_h264_write_buffering_period;
break;
case SEI_TYPE_PIC_TIMING:
if (!priv->send_timing_sei)
continue;
write_payload = &vaapi_encode_h264_write_pic_timing;
break;
case SEI_TYPE_USER_DATA_UNREGISTERED:
if (pic->encode_order != 0)
continue;
write_payload = &vaapi_encode_h264_write_identifier;
break;
default:
continue;
}
init_put_bits(&payload_bits, payload, sizeof(payload));
write_payload(&payload_bits, ctx, pic);
if (put_bits_count(&payload_bits) & 7) {
write_u(&payload_bits, 1, 1, bit_equal_to_one);
while (put_bits_count(&payload_bits) & 7)
write_u(&payload_bits, 1, 0, bit_equal_to_zero);
}
payload_size = put_bits_count(&payload_bits) / 8;
flush_put_bits(&payload_bits);
u(8, payload_type, last_payload_type_byte);
u(8, payload_size, last_payload_size_byte);
for (i = 0; i < payload_size; i++)
u(8, payload[i] & 0xff, sei_payload);
}
vaapi_encode_h264_write_trailing_rbsp(pbc);
}
static int vaapi_encode_h264_write_sequence_header(AVCodecContext *avctx,
char *data, size_t *data_len)
{
VAAPIEncodeContext *ctx = avctx->priv_data;
PutBitContext pbc;
char tmp[256];
int err;
size_t nal_len, bit_len, bit_pos, next_len;
bit_len = *data_len;
bit_pos = 0;
init_put_bits(&pbc, tmp, sizeof(tmp));
vaapi_encode_h264_write_sps(&pbc, ctx);
nal_len = put_bits_count(&pbc);
flush_put_bits(&pbc);
next_len = bit_len - bit_pos;
err = ff_vaapi_encode_h26x_nal_unit_to_byte_stream(data + bit_pos / 8,
&next_len,
tmp, nal_len);
if (err < 0)
return err;
bit_pos += next_len;
init_put_bits(&pbc, tmp, sizeof(tmp));
vaapi_encode_h264_write_pps(&pbc, ctx);
nal_len = put_bits_count(&pbc);
flush_put_bits(&pbc);
next_len = bit_len - bit_pos;
err = ff_vaapi_encode_h26x_nal_unit_to_byte_stream(data + bit_pos / 8,
&next_len,
tmp, nal_len);
if (err < 0)
return err;
bit_pos += next_len;
*data_len = bit_pos;
return 0;
}
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;
PutBitContext pbc;
char tmp[256];
size_t header_len;
init_put_bits(&pbc, tmp, sizeof(tmp));
vaapi_encode_h264_write_slice_header2(&pbc, ctx, pic, slice);
header_len = put_bits_count(&pbc);
flush_put_bits(&pbc);
return ff_vaapi_encode_h26x_nal_unit_to_byte_stream(data, data_len,
tmp, header_len);
}
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;
PutBitContext pbc;
char tmp[256];
size_t header_len;
if (index == 0 && ctx->va_rc_mode == VA_RC_CBR) {
*type = VAEncPackedHeaderH264_SEI;
init_put_bits(&pbc, tmp, sizeof(tmp));
vaapi_encode_h264_write_sei(&pbc, ctx, pic);
header_len = put_bits_count(&pbc);
flush_put_bits(&pbc);
return ff_vaapi_encode_h26x_nal_unit_to_byte_stream(data, data_len,
tmp, header_len);
} else {
return AVERROR_EOF;
}
}
static int vaapi_encode_h264_init_sequence_params(AVCodecContext *avctx)
{
VAAPIEncodeContext *ctx = avctx->priv_data;
VAEncSequenceParameterBufferH264 *vseq = ctx->codec_sequence_params;
VAEncPictureParameterBufferH264 *vpic = ctx->codec_picture_params;
VAAPIEncodeH264Context *priv = ctx->priv_data;
VAAPIEncodeH264MiscSequenceParams *mseq = &priv->misc_sequence_params;
int i;
{
vseq->seq_parameter_set_id = 0;
vseq->level_idc = avctx->level;
vseq->max_num_ref_frames = 1 + (avctx->max_b_frames > 0);
vseq->picture_width_in_mbs = priv->mb_width;
vseq->picture_height_in_mbs = priv->mb_height;
vseq->seq_fields.bits.chroma_format_idc = 1;
vseq->seq_fields.bits.frame_mbs_only_flag = 1;
vseq->seq_fields.bits.direct_8x8_inference_flag = 1;
vseq->seq_fields.bits.log2_max_frame_num_minus4 = 4;
vseq->seq_fields.bits.pic_order_cnt_type = 0;
if (avctx->width != ctx->surface_width ||
avctx->height != ctx->surface_height) {
vseq->frame_cropping_flag = 1;
vseq->frame_crop_left_offset = 0;
vseq->frame_crop_right_offset =
(ctx->surface_width - avctx->width) / 2;
vseq->frame_crop_top_offset = 0;
vseq->frame_crop_bottom_offset =
(ctx->surface_height - avctx->height) / 2;
} else {
vseq->frame_cropping_flag = 0;
}
vseq->vui_parameters_present_flag = 1;
if (avctx->sample_aspect_ratio.num != 0) {
vseq->vui_fields.bits.aspect_ratio_info_present_flag = 1;
// There is a large enum of these which we could support
// individually rather than using the generic X/Y form?
if (avctx->sample_aspect_ratio.num ==
avctx->sample_aspect_ratio.den) {
vseq->aspect_ratio_idc = 1;
} else {
vseq->aspect_ratio_idc = 255; // Extended SAR.
vseq->sar_width = avctx->sample_aspect_ratio.num;
vseq->sar_height = avctx->sample_aspect_ratio.den;
}
}
if (avctx->color_primaries != AVCOL_PRI_UNSPECIFIED ||
avctx->color_trc != AVCOL_TRC_UNSPECIFIED ||
avctx->colorspace != AVCOL_SPC_UNSPECIFIED) {
mseq->video_signal_type_present_flag = 1;
mseq->video_format = 5; // Unspecified.
mseq->video_full_range_flag = 0;
mseq->colour_description_present_flag = 1;
// These enums are derived from the standard and hence
// we can just use the values directly.
mseq->colour_primaries = avctx->color_primaries;
mseq->transfer_characteristics = avctx->color_trc;
mseq->matrix_coefficients = avctx->colorspace;
}
vseq->vui_fields.bits.bitstream_restriction_flag = 1;
mseq->motion_vectors_over_pic_boundaries_flag = 1;
mseq->max_bytes_per_pic_denom = 0;
mseq->max_bits_per_mb_denom = 0;
vseq->vui_fields.bits.log2_max_mv_length_horizontal = 16;
vseq->vui_fields.bits.log2_max_mv_length_vertical = 16;
mseq->max_num_reorder_frames = (avctx->max_b_frames > 0);
mseq->max_dec_pic_buffering = vseq->max_num_ref_frames;
vseq->bits_per_second = avctx->bit_rate;
vseq->vui_fields.bits.timing_info_present_flag = 1;
if (avctx->framerate.num > 0 && avctx->framerate.den > 0) {
vseq->num_units_in_tick = avctx->framerate.den;
vseq->time_scale = 2 * avctx->framerate.num;
mseq->fixed_frame_rate_flag = 1;
} else {
vseq->num_units_in_tick = avctx->time_base.num;
vseq->time_scale = 2 * avctx->time_base.den;
mseq->fixed_frame_rate_flag = 0;
}
if (ctx->va_rc_mode == VA_RC_CBR) {
priv->send_timing_sei = 1;
mseq->nal_hrd_parameters_present_flag = 1;
mseq->cpb_cnt_minus1 = 0;
// Try to scale these to a sensible range so that the
// golomb encode of the value is not overlong.
mseq->bit_rate_scale =
av_clip_uintp2(av_log2(avctx->bit_rate) - 15 - 6, 4);
mseq->bit_rate_value_minus1[0] =
(avctx->bit_rate >> mseq->bit_rate_scale + 6) - 1;
mseq->cpb_size_scale =
av_clip_uintp2(av_log2(ctx->hrd_params.hrd.buffer_size) - 15 - 4, 4);
mseq->cpb_size_value_minus1[0] =
(ctx->hrd_params.hrd.buffer_size >> mseq->cpb_size_scale + 4) - 1;
// CBR mode isn't actually available here, despite naming.
mseq->cbr_flag[0] = 0;
mseq->initial_cpb_removal_delay_length_minus1 = 23;
mseq->cpb_removal_delay_length_minus1 = 23;
mseq->dpb_output_delay_length_minus1 = 7;
mseq->time_offset_length = 0;
// This calculation can easily overflow 32 bits.
mseq->initial_cpb_removal_delay = 90000 *
(uint64_t)ctx->hrd_params.hrd.initial_buffer_fullness /
ctx->hrd_params.hrd.buffer_size;
mseq->initial_cpb_removal_delay_offset = 0;
} else {
priv->send_timing_sei = 0;
mseq->nal_hrd_parameters_present_flag = 0;
}
vseq->intra_period = ctx->p_per_i * (ctx->b_per_p + 1);
vseq->intra_idr_period = vseq->intra_period;
vseq->ip_period = ctx->b_per_p + 1;
}
{
vpic->CurrPic.picture_id = VA_INVALID_ID;
vpic->CurrPic.flags = VA_PICTURE_H264_INVALID;
for (i = 0; i < FF_ARRAY_ELEMS(vpic->ReferenceFrames); i++) {
vpic->ReferenceFrames[i].picture_id = VA_INVALID_ID;
vpic->ReferenceFrames[i].flags = VA_PICTURE_H264_INVALID;
}
vpic->coded_buf = VA_INVALID_ID;
vpic->pic_parameter_set_id = 0;
vpic->seq_parameter_set_id = 0;
vpic->num_ref_idx_l0_active_minus1 = 0;
vpic->num_ref_idx_l1_active_minus1 = 0;
vpic->pic_fields.bits.entropy_coding_mode_flag =
((avctx->profile & 0xff) != 66);
vpic->pic_fields.bits.weighted_pred_flag = 0;
vpic->pic_fields.bits.weighted_bipred_idc = 0;
vpic->pic_fields.bits.transform_8x8_mode_flag =
((avctx->profile & 0xff) >= 100);
vpic->pic_init_qp = priv->fixed_qp_idr;
}
{
mseq->profile_idc = avctx->profile & 0xff;
if (avctx->profile & FF_PROFILE_H264_CONSTRAINED)
mseq->constraint_set1_flag = 1;
if (avctx->profile & FF_PROFILE_H264_INTRA)
mseq->constraint_set3_flag = 1;
}
return 0;
}
static int vaapi_encode_h264_init_picture_params(AVCodecContext *avctx,
VAAPIEncodePicture *pic)
{
VAAPIEncodeContext *ctx = avctx->priv_data;
VAEncSequenceParameterBufferH264 *vseq = ctx->codec_sequence_params;
VAEncPictureParameterBufferH264 *vpic = pic->codec_picture_params;
VAAPIEncodeH264Context *priv = ctx->priv_data;
int i;
if (pic->type == PICTURE_TYPE_IDR) {
av_assert0(pic->display_order == pic->encode_order);
vpic->frame_num = 0;
priv->next_frame_num = 1;
priv->cpb_delay = 0;
priv->last_idr_frame = pic->display_order;
} else {
vpic->frame_num = priv->next_frame_num;
if (pic->type != PICTURE_TYPE_B) {
// nal_ref_idc != 0
++priv->next_frame_num;
}
++priv->cpb_delay;
}
priv->dpb_delay = pic->display_order - pic->encode_order + 1;
vpic->frame_num = vpic->frame_num &
((1 << (4 + vseq->seq_fields.bits.log2_max_frame_num_minus4)) - 1);
vpic->CurrPic.picture_id = pic->recon_surface;
vpic->CurrPic.frame_idx = vpic->frame_num;
vpic->CurrPic.flags = 0;
vpic->CurrPic.TopFieldOrderCnt = pic->display_order - priv->last_idr_frame;
vpic->CurrPic.BottomFieldOrderCnt = pic->display_order - priv->last_idr_frame;
for (i = 0; i < pic->nb_refs; i++) {
VAAPIEncodePicture *ref = pic->refs[i];
av_assert0(ref && ref->encode_order < pic->encode_order);
vpic->ReferenceFrames[i].picture_id = ref->recon_surface;
vpic->ReferenceFrames[i].frame_idx = ref->encode_order;
vpic->ReferenceFrames[i].flags = VA_PICTURE_H264_SHORT_TERM_REFERENCE;
vpic->ReferenceFrames[i].TopFieldOrderCnt = ref->display_order - priv->last_idr_frame;
vpic->ReferenceFrames[i].BottomFieldOrderCnt = ref->display_order - priv->last_idr_frame;
}
for (; i < FF_ARRAY_ELEMS(vpic->ReferenceFrames); i++) {
vpic->ReferenceFrames[i].picture_id = VA_INVALID_ID;
vpic->ReferenceFrames[i].flags = VA_PICTURE_H264_INVALID;
}
vpic->coded_buf = pic->output_buffer;
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;
VAEncSequenceParameterBufferH264 *vseq = ctx->codec_sequence_params;
VAEncPictureParameterBufferH264 *vpic = pic->codec_picture_params;
VAEncSliceParameterBufferH264 *vslice = slice->codec_slice_params;
VAAPIEncodeH264Context *priv = ctx->priv_data;
VAAPIEncodeH264Slice *pslice;
VAAPIEncodeH264MiscSliceParams *mslice;
int i;
slice->priv_data = av_mallocz(sizeof(*pslice));
if (!slice->priv_data)
return AVERROR(ENOMEM);
pslice = slice->priv_data;
mslice = &pslice->misc_slice_params;
if (pic->type == PICTURE_TYPE_IDR)
mslice->nal_unit_type = H264_NAL_IDR_SLICE;
else
mslice->nal_unit_type = H264_NAL_SLICE;
switch (pic->type) {
case PICTURE_TYPE_IDR:
vslice->slice_type = SLICE_TYPE_I;
mslice->nal_ref_idc = 3;
break;
case PICTURE_TYPE_I:
vslice->slice_type = SLICE_TYPE_I;
mslice->nal_ref_idc = 2;
break;
case PICTURE_TYPE_P:
vslice->slice_type = SLICE_TYPE_P;
mslice->nal_ref_idc = 1;
break;
case PICTURE_TYPE_B:
vslice->slice_type = SLICE_TYPE_B;
mslice->nal_ref_idc = 0;
break;
default:
av_assert0(0 && "invalid picture type");
}
// Only one slice per frame.
vslice->macroblock_address = 0;
vslice->num_macroblocks = priv->mb_width * priv->mb_height;
vslice->macroblock_info = VA_INVALID_ID;
vslice->pic_parameter_set_id = vpic->pic_parameter_set_id;
vslice->idr_pic_id = priv->idr_pic_count++;
vslice->pic_order_cnt_lsb = (pic->display_order - priv->last_idr_frame) &
((1 << (4 + vseq->seq_fields.bits.log2_max_pic_order_cnt_lsb_minus4)) - 1);
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->num_ref_idx_l0_active_minus1 = 0;
vslice->RefPicList0[0] = vpic->ReferenceFrames[0];
}
if (pic->nb_refs >= 2) {
// Forward reference for B-frame.
av_assert0(pic->type == PICTURE_TYPE_B);
vslice->num_ref_idx_l1_active_minus1 = 0;
vslice->RefPicList1[0] = vpic->ReferenceFrames[1];
}
if (pic->type == PICTURE_TYPE_B)
vslice->slice_qp_delta = priv->fixed_qp_b - vpic->pic_init_qp;
else if (pic->type == PICTURE_TYPE_P)
vslice->slice_qp_delta = priv->fixed_qp_p - vpic->pic_init_qp;
else
vslice->slice_qp_delta = priv->fixed_qp_idr - vpic->pic_init_qp;
vslice->direct_spatial_mv_pred_flag = 1;
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;
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;
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 = 26;
priv->fixed_qp_p = 26;
priv->fixed_qp_b = 26;
av_log(avctx, AV_LOG_DEBUG, "Using constant-bitrate = %"PRId64" bps.\n",
avctx->bit_rate);
} else {
av_assert0(0 && "Invalid RC mode.");
}
if (opt->quality > 0) {
#if VA_CHECK_VERSION(0, 36, 0)
priv->quality_params.misc.type =
VAEncMiscParameterTypeQualityLevel;
priv->quality_params.quality.quality_level = opt->quality;
ctx->global_params[ctx->nb_global_params] =
&priv->quality_params.misc;
ctx->global_params_size[ctx->nb_global_params++] =
sizeof(priv->quality_params);
#else
av_log(avctx, AV_LOG_WARNING, "The encode quality option is not "
"supported with this VAAPI version.\n");
#endif
}
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_CONSTRAINED_BASELINE:
ctx->va_profile = VAProfileH264ConstrainedBaseline;
break;
case FF_PROFILE_H264_BASELINE:
ctx->va_profile = VAProfileH264Baseline;
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)
ctx->va_rc_mode = VA_RC_CBR;
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);
}
#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 },
{ NULL },
};
static const AVCodecDefault vaapi_encode_h264_defaults[] = {
{ "profile", "100" },
{ "level", "51" },
{ "b", "0" },
{ "bf", "2" },
{ "g", "120" },
{ "i_qfactor", "1" },
{ "i_qoffset", "0" },
{ "b_qfactor", "6/5" },
{ "b_qoffset", "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 = &ff_vaapi_encode_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,
},
};
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