/**
* Append picture to the decoded picture buffer, in a VA API form that
* merges the second field picture attributes with the first, if
* available. The decoded picture buffer's size must be large enough
* to receive the new VA API picture object.
*/
static int dpb_add(DPB *dpb, const H264Picture *pic)
{
int i;
if (dpb->size >= dpb->max_size)
return -1;
for (i = 0; i < dpb->size; i++) {
VAPictureH264 * const va_pic = &dpb->va_pics[i];
if (va_pic->picture_id == ff_vaapi_get_surface_id(pic->f)) {
VAPictureH264 temp_va_pic;
fill_vaapi_pic(&temp_va_pic, pic, 0);
if ((temp_va_pic.flags ^ va_pic->flags) & (VA_PICTURE_H264_TOP_FIELD | VA_PICTURE_H264_BOTTOM_FIELD)) {
va_pic->flags |= temp_va_pic.flags & (VA_PICTURE_H264_TOP_FIELD | VA_PICTURE_H264_BOTTOM_FIELD);
/* Merge second field */
if (temp_va_pic.flags & VA_PICTURE_H264_TOP_FIELD) {
va_pic->TopFieldOrderCnt = temp_va_pic.TopFieldOrderCnt;
} else {
va_pic->BottomFieldOrderCnt = temp_va_pic.BottomFieldOrderCnt;
}
}
return 0;
}
}
fill_vaapi_pic(&dpb->va_pics[dpb->size++], pic, 0);
return 0;
}
/**
* Fill in VA API reference picture lists from the Libav reference
* picture list.
*
* @param[out] RefPicList VA API internal reference picture list
* @param[in] ref_list A pointer to the Libav reference list
* @param[in] ref_count The number of reference pictures in ref_list
*/
static void fill_vaapi_RefPicList(VAPictureH264 RefPicList[32],
const H264Ref *ref_list,
unsigned int ref_count)
{
unsigned int i, n = 0;
for (i = 0; i < ref_count; i++)
if (ref_list[i].reference)
fill_vaapi_pic(&RefPicList[n++], ref_list[i].parent, 0);
for (; n < 32; n++)
init_vaapi_pic(&RefPicList[n]);
}
static void fill_vaapi_ReferenceFrames(const HEVCContext *h, VAPictureParameterBufferHEVC *pp)
{
const HEVCFrame *current_picture = h->ref;
int i, j, rps_type;
for (i = 0, j = 0; i < FF_ARRAY_ELEMS(pp->ReferenceFrames); i++) {
const HEVCFrame *frame = NULL;
while (!frame && j < FF_ARRAY_ELEMS(h->DPB)) {
if (&h->DPB[j] != current_picture && (h->DPB[j].flags & (HEVC_FRAME_FLAG_LONG_REF | HEVC_FRAME_FLAG_SHORT_REF)))
frame = &h->DPB[j];
j++;
}
init_vaapi_pic(&pp->ReferenceFrames[i]);
if (frame) {
rps_type = find_frame_rps_type(h, frame);
fill_vaapi_pic(&pp->ReferenceFrames[i], frame, rps_type);
}
}
}
static void fill_picture_parameters(const HEVCContext *h, VAPictureParameterBufferHEVC *pp)
{
int i;
pp->pic_fields.value = 0;
pp->slice_parsing_fields.value = 0;
fill_vaapi_pic(&pp->CurrPic, h->ref, 0);
fill_vaapi_ReferenceFrames(h, pp);
pp->pic_width_in_luma_samples = h->ps.sps->width;
pp->pic_height_in_luma_samples = h->ps.sps->height;
pp->log2_min_luma_coding_block_size_minus3 = h->ps.sps->log2_min_cb_size - 3;
pp->pic_fields.bits.chroma_format_idc = h->ps.sps->chroma_format_idc;
pp->sps_max_dec_pic_buffering_minus1 = h->ps.sps->temporal_layer[h->ps.sps->max_sub_layers - 1].max_dec_pic_buffering - 1;
pp->log2_diff_max_min_luma_coding_block_size = h->ps.sps->log2_diff_max_min_coding_block_size;
pp->log2_min_transform_block_size_minus2 = h->ps.sps->log2_min_tb_size - 2;
pp->log2_diff_max_min_transform_block_size = h->ps.sps->log2_max_trafo_size - h->ps.sps->log2_min_tb_size;
pp->max_transform_hierarchy_depth_inter = h->ps.sps->max_transform_hierarchy_depth_inter;
pp->max_transform_hierarchy_depth_intra = h->ps.sps->max_transform_hierarchy_depth_intra;
pp->num_short_term_ref_pic_sets = h->ps.sps->nb_st_rps;
pp->num_long_term_ref_pic_sps = h->ps.sps->num_long_term_ref_pics_sps;
pp->num_ref_idx_l0_default_active_minus1 = h->ps.pps->num_ref_idx_l0_default_active - 1;
pp->num_ref_idx_l1_default_active_minus1 = h->ps.pps->num_ref_idx_l1_default_active - 1;
pp->init_qp_minus26 = h->ps.pps->pic_init_qp_minus26;
pp->pps_cb_qp_offset = h->ps.pps->cb_qp_offset;
pp->pps_cr_qp_offset = h->ps.pps->cr_qp_offset;
pp->pic_fields.bits.tiles_enabled_flag = h->ps.pps->tiles_enabled_flag;
pp->pic_fields.bits.separate_colour_plane_flag = h->ps.sps->separate_colour_plane_flag;
pp->pic_fields.bits.pcm_enabled_flag = h->ps.sps->pcm_enabled_flag;
pp->pic_fields.bits.scaling_list_enabled_flag = h->ps.sps->scaling_list_enable_flag;
pp->pic_fields.bits.transform_skip_enabled_flag = h->ps.pps->transform_skip_enabled_flag;
pp->pic_fields.bits.amp_enabled_flag = h->ps.sps->amp_enabled_flag;
pp->pic_fields.bits.strong_intra_smoothing_enabled_flag = h->ps.sps->sps_strong_intra_smoothing_enable_flag;
pp->pic_fields.bits.sign_data_hiding_enabled_flag = h->ps.pps->sign_data_hiding_flag;
pp->pic_fields.bits.constrained_intra_pred_flag = h->ps.pps->constrained_intra_pred_flag;
pp->pic_fields.bits.cu_qp_delta_enabled_flag = h->ps.pps->cu_qp_delta_enabled_flag;
pp->pic_fields.bits.weighted_pred_flag = h->ps.pps->weighted_pred_flag;
pp->pic_fields.bits.weighted_bipred_flag = h->ps.pps->weighted_bipred_flag;
pp->pic_fields.bits.transquant_bypass_enabled_flag = h->ps.pps->transquant_bypass_enable_flag;
pp->pic_fields.bits.entropy_coding_sync_enabled_flag = h->ps.pps->entropy_coding_sync_enabled_flag;
pp->pic_fields.bits.pps_loop_filter_across_slices_enabled_flag = h->ps.pps->seq_loop_filter_across_slices_enabled_flag;
pp->pic_fields.bits.loop_filter_across_tiles_enabled_flag = h->ps.pps->loop_filter_across_tiles_enabled_flag;
pp->pic_fields.bits.pcm_loop_filter_disabled_flag = h->ps.sps->pcm.loop_filter_disable_flag;
pp->pcm_sample_bit_depth_luma_minus1 = h->ps.sps->pcm.bit_depth - 1;
pp->pcm_sample_bit_depth_chroma_minus1 = h->ps.sps->pcm.bit_depth_chroma - 1;
pp->log2_min_pcm_luma_coding_block_size_minus3 = h->ps.sps->pcm.log2_min_pcm_cb_size - 3;
pp->log2_diff_max_min_pcm_luma_coding_block_size = h->ps.sps->pcm.log2_max_pcm_cb_size - h->ps.sps->pcm.log2_min_pcm_cb_size;
memset(pp->column_width_minus1, 0, sizeof(pp->column_width_minus1));
memset(pp->row_height_minus1, 0, sizeof(pp->row_height_minus1));
if (h->ps.pps->tiles_enabled_flag) {
pp->num_tile_columns_minus1 = h->ps.pps->num_tile_columns - 1;
pp->num_tile_rows_minus1 = h->ps.pps->num_tile_rows - 1;
for (i = 0; i < h->ps.pps->num_tile_columns; i++)
pp->column_width_minus1[i] = h->ps.pps->column_width[i] - 1;
for (i = 0; i < h->ps.pps->num_tile_rows; i++)
pp->row_height_minus1[i] = h->ps.pps->row_height[i] - 1;
}
pp->diff_cu_qp_delta_depth = h->ps.pps->diff_cu_qp_delta_depth;
pp->pps_beta_offset_div2 = h->ps.pps->beta_offset / 2;
pp->pps_tc_offset_div2 = h->ps.pps->tc_offset / 2;
pp->log2_parallel_merge_level_minus2 = h->ps.pps->log2_parallel_merge_level - 2;
/* Different chroma/luma bit depths are currently not supported by ffmpeg. */
pp->bit_depth_luma_minus8 = h->ps.sps->bit_depth - 8;
pp->bit_depth_chroma_minus8 = h->ps.sps->bit_depth - 8;
pp->slice_parsing_fields.bits.lists_modification_present_flag = h->ps.pps->lists_modification_present_flag;
pp->slice_parsing_fields.bits.long_term_ref_pics_present_flag = h->ps.sps->long_term_ref_pics_present_flag;
pp->slice_parsing_fields.bits.sps_temporal_mvp_enabled_flag = h->ps.sps->sps_temporal_mvp_enabled_flag;
pp->slice_parsing_fields.bits.cabac_init_present_flag = h->ps.pps->cabac_init_present_flag;
pp->slice_parsing_fields.bits.output_flag_present_flag = h->ps.pps->output_flag_present_flag;
pp->slice_parsing_fields.bits.dependent_slice_segments_enabled_flag = h->ps.pps->dependent_slice_segments_enabled_flag;
pp->slice_parsing_fields.bits.pps_slice_chroma_qp_offsets_present_flag = h->ps.pps->pic_slice_level_chroma_qp_offsets_present_flag;
pp->slice_parsing_fields.bits.sample_adaptive_offset_enabled_flag = h->ps.sps->sao_enabled;
pp->slice_parsing_fields.bits.deblocking_filter_override_enabled_flag = h->ps.pps->deblocking_filter_override_enabled_flag;
pp->slice_parsing_fields.bits.pps_disable_deblocking_filter_flag = h->ps.pps->disable_dbf;
pp->slice_parsing_fields.bits.slice_segment_header_extension_present_flag = h->ps.pps->slice_header_extension_present_flag;
pp->log2_max_pic_order_cnt_lsb_minus4 = h->ps.sps->log2_max_poc_lsb - 4;
pp->num_extra_slice_header_bits = h->ps.pps->num_extra_slice_header_bits;
if (h->nal_unit_type >= NAL_BLA_W_LP && h->nal_unit_type <= NAL_CRA_NUT) {
pp->slice_parsing_fields.bits.RapPicFlag = 1;
} else {
pp->slice_parsing_fields.bits.RapPicFlag = 0;
}
if (IS_IDR(h)) {
pp->slice_parsing_fields.bits.IdrPicFlag = 1;
} else {
pp->slice_parsing_fields.bits.IdrPicFlag = 0;
}
if (IS_IRAP(h)) {
pp->slice_parsing_fields.bits.IntraPicFlag = 1;
} else {
pp->slice_parsing_fields.bits.IntraPicFlag = 0;
}
if (h->sh.short_term_ref_pic_set_sps_flag == 0 && h->sh.short_term_rps) {
pp->st_rps_bits = h->sh.short_term_ref_pic_set_size;
} else {
pp->st_rps_bits = 0;
}
/* TODO */
pp->pic_fields.bits.NoPicReorderingFlag = 0;
pp->pic_fields.bits.NoBiPredFlag = 0;
}
/** Initialize and start decoding a frame with VA API. */
static int start_frame(AVCodecContext *avctx,
av_unused const uint8_t *buffer,
av_unused uint32_t size)
{
H264Context * const h = avctx->priv_data;
MpegEncContext * const s = &h->s;
struct vaapi_context * const vactx = avctx->hwaccel_context;
VAPictureParameterBufferH264 *pic_param;
VAIQMatrixBufferH264 *iq_matrix;
av_dlog(avctx, "start_frame()\n");
vactx->slice_param_size = sizeof(VASliceParameterBufferH264);
/* Fill in VAPictureParameterBufferH264. */
pic_param = ff_vaapi_alloc_pic_param(vactx, sizeof(VAPictureParameterBufferH264));
if (!pic_param)
return -1;
fill_vaapi_pic(&pic_param->CurrPic, s->current_picture_ptr, s->picture_structure);
if (fill_vaapi_ReferenceFrames(pic_param, h) < 0)
return -1;
pic_param->picture_width_in_mbs_minus1 = s->mb_width - 1;
pic_param->picture_height_in_mbs_minus1 = s->mb_height - 1;
pic_param->bit_depth_luma_minus8 = h->sps.bit_depth_luma - 8;
pic_param->bit_depth_chroma_minus8 = h->sps.bit_depth_chroma - 8;
pic_param->num_ref_frames = h->sps.ref_frame_count;
pic_param->seq_fields.value = 0; /* reset all bits */
pic_param->seq_fields.bits.chroma_format_idc = h->sps.chroma_format_idc;
pic_param->seq_fields.bits.residual_colour_transform_flag = h->sps.residual_color_transform_flag; /* XXX: only for 4:4:4 high profile? */
pic_param->seq_fields.bits.gaps_in_frame_num_value_allowed_flag = h->sps.gaps_in_frame_num_allowed_flag;
pic_param->seq_fields.bits.frame_mbs_only_flag = h->sps.frame_mbs_only_flag;
pic_param->seq_fields.bits.mb_adaptive_frame_field_flag = h->sps.mb_aff;
pic_param->seq_fields.bits.direct_8x8_inference_flag = h->sps.direct_8x8_inference_flag;
pic_param->seq_fields.bits.MinLumaBiPredSize8x8 = h->sps.level_idc >= 31; /* A.3.3.2 */
pic_param->seq_fields.bits.log2_max_frame_num_minus4 = h->sps.log2_max_frame_num - 4;
pic_param->seq_fields.bits.pic_order_cnt_type = h->sps.poc_type;
pic_param->seq_fields.bits.log2_max_pic_order_cnt_lsb_minus4 = h->sps.log2_max_poc_lsb - 4;
pic_param->seq_fields.bits.delta_pic_order_always_zero_flag = h->sps.delta_pic_order_always_zero_flag;
pic_param->num_slice_groups_minus1 = h->pps.slice_group_count - 1;
pic_param->slice_group_map_type = h->pps.mb_slice_group_map_type;
pic_param->slice_group_change_rate_minus1 = 0; /* XXX: unimplemented in FFmpeg */
pic_param->pic_init_qp_minus26 = h->pps.init_qp - 26;
pic_param->pic_init_qs_minus26 = h->pps.init_qs - 26;
pic_param->chroma_qp_index_offset = h->pps.chroma_qp_index_offset[0];
pic_param->second_chroma_qp_index_offset = h->pps.chroma_qp_index_offset[1];
pic_param->pic_fields.value = 0; /* reset all bits */
pic_param->pic_fields.bits.entropy_coding_mode_flag = h->pps.cabac;
pic_param->pic_fields.bits.weighted_pred_flag = h->pps.weighted_pred;
pic_param->pic_fields.bits.weighted_bipred_idc = h->pps.weighted_bipred_idc;
pic_param->pic_fields.bits.transform_8x8_mode_flag = h->pps.transform_8x8_mode;
pic_param->pic_fields.bits.field_pic_flag = s->picture_structure != PICT_FRAME;
pic_param->pic_fields.bits.constrained_intra_pred_flag = h->pps.constrained_intra_pred;
pic_param->pic_fields.bits.pic_order_present_flag = h->pps.pic_order_present;
pic_param->pic_fields.bits.deblocking_filter_control_present_flag = h->pps.deblocking_filter_parameters_present;
pic_param->pic_fields.bits.redundant_pic_cnt_present_flag = h->pps.redundant_pic_cnt_present;
pic_param->pic_fields.bits.reference_pic_flag = h->nal_ref_idc != 0;
pic_param->frame_num = h->frame_num;
/* Fill in VAIQMatrixBufferH264. */
iq_matrix = ff_vaapi_alloc_iq_matrix(vactx, sizeof(VAIQMatrixBufferH264));
if (!iq_matrix)
return -1;
memcpy(iq_matrix->ScalingList4x4, h->pps.scaling_matrix4, sizeof(iq_matrix->ScalingList4x4));
memcpy(iq_matrix->ScalingList8x8, h->pps.scaling_matrix8, sizeof(iq_matrix->ScalingList8x8));
return 0;
}