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FFmpeg/libavcodec/vaapi_encode_h264.c
Mark Thompson bd211bb866 vaapi: Remove H.264 baseline profile 
This has been deprecated in libva2 because hardware does not and will not
support it.  Therefore never consider it for decode, and for encode assume
the user meant constrained baseline profile instead.
2017-10-09 00:11:53 +01:00

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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;
} VAAPIEncodeH264Context;
typedef struct VAAPIEncodeH264Options {
int qp;
int quality;
int low_power;
// Entropy encoder type.
int coder;
} 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 H264_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 H264_SEI_TYPE_PIC_TIMING:
if (!priv->send_timing_sei)
continue;
write_payload = &vaapi_encode_h264_write_pic_timing;
break;
case H264_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;
VAAPIEncodeH264Options *opt =
(VAAPIEncodeH264Options*)ctx->codec_options_data;
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;
vseq->seq_fields.bits.log2_max_pic_order_cnt_lsb_minus4 =
av_clip(av_log2(avctx->max_b_frames + 1) - 2, 0, 12);
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 = avctx->gop_size;
vseq->intra_idr_period = avctx->gop_size;
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 =
opt->coder ? ((avctx->profile & 0xff) != 66) : 0;
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 ||
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 = %"PRId64" 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;
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;
if (avctx->max_b_frames != 0) {
avctx->max_b_frames = 0;
av_log(avctx, AV_LOG_WARNING, "H.264 constrained baseline profile "
"doesn't support encoding with B frames, disabling them.\n");
}
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);
}
#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 },
{ "coder", "Entropy coder type",
OFFSET(coder), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, FLAGS, "coder" },
{ "cavlc", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, FLAGS, "coder" },
{ "cabac", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, FLAGS, "coder" },
{ "vlc", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, FLAGS, "coder" },
{ "ac", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, FLAGS, "coder" },
{ 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" },
{ "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 = &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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