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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 "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 vui_parameters_present_flag;
} 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;
int64_t idr_pic_count;
int64_t last_idr_frame;
// Rate control configuration.
struct {
VAEncMiscParameterBuffer misc;
VAEncMiscParameterRateControl rc;
} rc_params;
struct {
VAEncMiscParameterBuffer misc;
VAEncMiscParameterHRD hrd;
} hrd_params;
#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;
} VAAPIEncodeH264Options;
#define vseq_var(name) vseq->name, name
#define vseq_field(name) vseq->seq_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_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, 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, mseq_var(vui_parameters_present_flag));
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, 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 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_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 = 2;
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 (ctx->input_width != ctx->aligned_width ||
ctx->input_height != ctx->aligned_height) {
vseq->frame_cropping_flag = 1;
vseq->frame_crop_left_offset = 0;
vseq->frame_crop_right_offset =
(ctx->aligned_width - ctx->input_width) / 2;
vseq->frame_crop_top_offset = 0;
vseq->frame_crop_bottom_offset =
(ctx->aligned_height - ctx->input_height) / 2;
} else {
vseq->frame_cropping_flag = 0;
}
vseq->bits_per_second = avctx->bit_rate;
if (avctx->framerate.num > 0 && avctx->framerate.den > 0) {
vseq->num_units_in_tick = avctx->framerate.num;
vseq->time_scale = 2 * avctx->framerate.den;
} else {
vseq->num_units_in_tick = avctx->time_base.num;
vseq->time_scale = 2 * avctx->time_base.den;
}
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);
priv->last_idr_frame = pic->display_order;
} else {
av_assert0(pic->display_order > priv->last_idr_frame);
}
vpic->frame_num = (pic->encode_order - priv->last_idr_frame) &
((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;
vpic->CurrPic.BottomFieldOrderCnt = pic->display_order;
for (i = 0; i < pic->nb_refs; i++) {
VAAPIEncodePicture *ref = pic->refs[i];
av_assert0(ref && ref->encode_order >= priv->last_idr_frame);
vpic->ReferenceFrames[i].picture_id = ref->recon_surface;
vpic->ReferenceFrames[i].frame_idx =
ref->encode_order - priv->last_idr_frame;
vpic->ReferenceFrames[i].flags = VA_PICTURE_H264_SHORT_TERM_REFERENCE;
vpic->ReferenceFrames[i].TopFieldOrderCnt = ref->display_order;
vpic->ReferenceFrames[i].BottomFieldOrderCnt = ref->display_order;
}
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 = NAL_IDR_SLICE;
else
mslice->nal_unit_type = 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 &
((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_init_constant_bitrate(AVCodecContext *avctx)
{
VAAPIEncodeContext *ctx = avctx->priv_data;
VAAPIEncodeH264Context *priv = ctx->priv_data;
int hrd_buffer_size;
int hrd_initial_buffer_fullness;
if (avctx->bit_rate > INT32_MAX) {
av_log(avctx, AV_LOG_ERROR, "Target bitrate of 2^31 bps or "
"higher is not supported.\n");
return AVERROR(EINVAL);
}
if (avctx->rc_buffer_size)
hrd_buffer_size = avctx->rc_buffer_size;
else
hrd_buffer_size = avctx->bit_rate;
if (avctx->rc_initial_buffer_occupancy)
hrd_initial_buffer_fullness = avctx->rc_initial_buffer_occupancy;
else
hrd_initial_buffer_fullness = hrd_buffer_size * 3 / 4;
priv->rc_params.misc.type = VAEncMiscParameterTypeRateControl;
priv->rc_params.rc = (VAEncMiscParameterRateControl) {
.bits_per_second = avctx->bit_rate,
.target_percentage = 66,
.window_size = 1000,
.initial_qp = (avctx->qmax >= 0 ? avctx->qmax : 40),
.min_qp = (avctx->qmin >= 0 ? avctx->qmin : 18),
.basic_unit_size = 0,
};
ctx->global_params[ctx->nb_global_params] =
&priv->rc_params.misc;
ctx->global_params_size[ctx->nb_global_params++] =
sizeof(priv->rc_params);
priv->hrd_params.misc.type = VAEncMiscParameterTypeHRD;
priv->hrd_params.hrd = (VAEncMiscParameterHRD) {
.initial_buffer_fullness = hrd_initial_buffer_fullness,
.buffer_size = hrd_buffer_size,
};
ctx->global_params[ctx->nb_global_params] =
&priv->hrd_params.misc;
ctx->global_params_size[ctx->nb_global_params++] =
sizeof(priv->hrd_params);
// 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);
return 0;
}
static av_cold int vaapi_encode_h264_init_fixed_qp(AVCodecContext *avctx)
{
VAAPIEncodeContext *ctx = avctx->priv_data;
VAAPIEncodeH264Context *priv = ctx->priv_data;
VAAPIEncodeH264Options *opt = ctx->codec_options;
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);
return 0;
}
static av_cold int vaapi_encode_h264_init_internal(AVCodecContext *avctx)
{
static const VAConfigAttrib default_config_attributes[] = {
{ .type = VAConfigAttribRTFormat,
.value = VA_RT_FORMAT_YUV420 },
{ .type = VAConfigAttribEncPackedHeaders,
.value = (VA_ENC_PACKED_HEADER_SEQUENCE |
VA_ENC_PACKED_HEADER_SLICE) },
};
VAAPIEncodeContext *ctx = avctx->priv_data;
VAAPIEncodeH264Context *priv = ctx->priv_data;
VAAPIEncodeH264Options *opt = ctx->codec_options;
int i, err;
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);
}
ctx->va_entrypoint = VAEntrypointEncSlice;
ctx->input_width = avctx->width;
ctx->input_height = avctx->height;
ctx->aligned_width = FFALIGN(ctx->input_width, 16);
ctx->aligned_height = FFALIGN(ctx->input_height, 16);
priv->mb_width = ctx->aligned_width / 16;
priv->mb_height = ctx->aligned_height / 16;
for (i = 0; i < FF_ARRAY_ELEMS(default_config_attributes); i++) {
ctx->config_attributes[ctx->nb_config_attributes++] =
default_config_attributes[i];
}
if (avctx->bit_rate > 0) {
ctx->va_rc_mode = VA_RC_CBR;
err = vaapi_encode_h264_init_constant_bitrate(avctx);
} else {
ctx->va_rc_mode = VA_RC_CQP;
err = vaapi_encode_h264_init_fixed_qp(avctx);
}
if (err < 0)
return err;
ctx->config_attributes[ctx->nb_config_attributes++] = (VAConfigAttrib) {
.type = VAConfigAttribRateControl,
.value = ctx->va_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
}
ctx->nb_recon_frames = 20;
return 0;
}
static VAAPIEncodeType vaapi_encode_type_h264 = {
.priv_data_size = sizeof(VAAPIEncodeH264Context),
.init = &vaapi_encode_h264_init_internal,
.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,
};
static av_cold int vaapi_encode_h264_init(AVCodecContext *avctx)
{
return ff_vaapi_encode_init(avctx, &vaapi_encode_type_h264);
}
#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, 2, FLAGS },
{ 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" },
{ 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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