forked from KolibriOS/kolibrios
438 lines
20 KiB
C
438 lines
20 KiB
C
/*
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* MPEG-H Part 2 / HEVC / H.265 HW decode acceleration through VDPAU
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*
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* Copyright (c) 2013 Philip Langdale
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <vdpau/vdpau.h>
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#include "avcodec.h"
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#include "internal.h"
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#include "hevc.h"
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#include "vdpau.h"
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#include "vdpau_internal.h"
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static int vdpau_hevc_start_frame(AVCodecContext *avctx,
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const uint8_t *buffer, uint32_t size)
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{
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HEVCContext *h = avctx->priv_data;
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HEVCFrame *pic = h->ref;
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struct vdpau_picture_context *pic_ctx = pic->hwaccel_picture_private;
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VdpPictureInfoHEVC *info = &pic_ctx->info.hevc;
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const HEVCSPS *sps = h->ps.sps;
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const HEVCPPS *pps = h->ps.pps;
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const SliceHeader *sh = &h->sh;
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const ScalingList *sl = pps->scaling_list_data_present_flag ?
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&pps->scaling_list : &sps->scaling_list;
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/* init VdpPictureInfoHEVC */
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/* SPS */
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info->chroma_format_idc = sps->chroma_format_idc;
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info->separate_colour_plane_flag = sps->separate_colour_plane_flag;
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info->pic_width_in_luma_samples = sps->width;
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info->pic_height_in_luma_samples = sps->height;
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info->bit_depth_luma_minus8 = sps->bit_depth - 8;
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info->bit_depth_chroma_minus8 = sps->bit_depth - 8;
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info->log2_max_pic_order_cnt_lsb_minus4 = sps->log2_max_poc_lsb - 4;
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/** Provides the value corresponding to the nuh_temporal_id of the frame
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to be decoded. */
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info->sps_max_dec_pic_buffering_minus1 = sps->temporal_layer[sps->max_sub_layers - 1].max_dec_pic_buffering - 1;
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info->log2_min_luma_coding_block_size_minus3 = sps->log2_min_cb_size - 3;
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info->log2_diff_max_min_luma_coding_block_size = sps->log2_diff_max_min_coding_block_size;
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info->log2_min_transform_block_size_minus2 = sps->log2_min_tb_size - 2;
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info->log2_diff_max_min_transform_block_size = sps->log2_max_trafo_size - sps->log2_min_tb_size;
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info->max_transform_hierarchy_depth_inter = sps->max_transform_hierarchy_depth_inter;
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info->max_transform_hierarchy_depth_intra = sps->max_transform_hierarchy_depth_intra;
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info->scaling_list_enabled_flag = sps->scaling_list_enable_flag;
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/** Scaling lists, in diagonal order, to be used for this frame. */
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for (size_t i = 0; i < 6; i++) {
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for (size_t j = 0; j < 16; j++) {
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/** Scaling List for 4x4 quantization matrix,
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indexed as ScalingList4x4[matrixId][i]. */
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uint8_t pos = 4 * ff_hevc_diag_scan4x4_y[j] + ff_hevc_diag_scan4x4_x[j];
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info->ScalingList4x4[i][j] = sl->sl[0][i][pos];
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}
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for (size_t j = 0; j < 64; j++) {
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uint8_t pos = 8 * ff_hevc_diag_scan8x8_y[j] + ff_hevc_diag_scan8x8_x[j];
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/** Scaling List for 8x8 quantization matrix,
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indexed as ScalingList8x8[matrixId][i]. */
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info->ScalingList8x8[i][j] = sl->sl[1][i][pos];
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/** Scaling List for 16x16 quantization matrix,
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indexed as ScalingList16x16[matrixId][i]. */
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info->ScalingList16x16[i][j] = sl->sl[2][i][pos];
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if (i < 2) {
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/** Scaling List for 32x32 quantization matrix,
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indexed as ScalingList32x32[matrixId][i]. */
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info->ScalingList32x32[i][j] = sl->sl[3][i * 3][pos];
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}
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}
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/** Scaling List DC Coefficients for 16x16,
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indexed as ScalingListDCCoeff16x16[matrixId]. */
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info->ScalingListDCCoeff16x16[i] = sl->sl_dc[0][i];
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if (i < 2) {
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/** Scaling List DC Coefficients for 32x32,
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indexed as ScalingListDCCoeff32x32[matrixId]. */
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info->ScalingListDCCoeff32x32[i] = sl->sl_dc[1][i * 3];
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}
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}
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info->amp_enabled_flag = sps->amp_enabled_flag;
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info->sample_adaptive_offset_enabled_flag = sps->sao_enabled;
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info->pcm_enabled_flag = sps->pcm_enabled_flag;
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if (info->pcm_enabled_flag) {
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/** Only needs to be set if pcm_enabled_flag is set. Ignored otherwise. */
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info->pcm_sample_bit_depth_luma_minus1 = sps->pcm.bit_depth - 1;
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/** Only needs to be set if pcm_enabled_flag is set. Ignored otherwise. */
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info->pcm_sample_bit_depth_chroma_minus1 = sps->pcm.bit_depth_chroma - 1;
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/** Only needs to be set if pcm_enabled_flag is set. Ignored otherwise. */
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info->log2_min_pcm_luma_coding_block_size_minus3 = sps->pcm.log2_min_pcm_cb_size - 3;
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/** Only needs to be set if pcm_enabled_flag is set. Ignored otherwise. */
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info->log2_diff_max_min_pcm_luma_coding_block_size = sps->pcm.log2_max_pcm_cb_size - sps->pcm.log2_min_pcm_cb_size;
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/** Only needs to be set if pcm_enabled_flag is set. Ignored otherwise. */
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info->pcm_loop_filter_disabled_flag = sps->pcm.loop_filter_disable_flag;
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}
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/** Per spec, when zero, assume short_term_ref_pic_set_sps_flag
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is also zero. */
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info->num_short_term_ref_pic_sets = sps->nb_st_rps;
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info->long_term_ref_pics_present_flag = sps->long_term_ref_pics_present_flag;
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/** Only needed if long_term_ref_pics_present_flag is set. Ignored
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otherwise. */
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info->num_long_term_ref_pics_sps = sps->num_long_term_ref_pics_sps;
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info->sps_temporal_mvp_enabled_flag = sps->sps_temporal_mvp_enabled_flag;
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info->strong_intra_smoothing_enabled_flag = sps->sps_strong_intra_smoothing_enable_flag;
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/** @} */
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/** \name HEVC Picture Parameter Set
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*
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* Copies of the HEVC Picture Parameter Set bitstream fields.
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* @{ */
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info->dependent_slice_segments_enabled_flag = pps->dependent_slice_segments_enabled_flag;
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info->output_flag_present_flag = pps->output_flag_present_flag;
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info->num_extra_slice_header_bits = pps->num_extra_slice_header_bits;
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info->sign_data_hiding_enabled_flag = pps->sign_data_hiding_flag;
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info->cabac_init_present_flag = pps->cabac_init_present_flag;
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info->num_ref_idx_l0_default_active_minus1 = pps->num_ref_idx_l0_default_active - 1;
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info->num_ref_idx_l1_default_active_minus1 = pps->num_ref_idx_l1_default_active - 1;
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info->init_qp_minus26 = pps->pic_init_qp_minus26;
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info->constrained_intra_pred_flag = pps->constrained_intra_pred_flag;
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info->transform_skip_enabled_flag = pps->transform_skip_enabled_flag;
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info->cu_qp_delta_enabled_flag = pps->cu_qp_delta_enabled_flag;
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/** Only needed if cu_qp_delta_enabled_flag is set. Ignored otherwise. */
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info->diff_cu_qp_delta_depth = pps->diff_cu_qp_delta_depth;
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info->pps_cb_qp_offset = pps->cb_qp_offset;
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info->pps_cr_qp_offset = pps->cr_qp_offset;
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info->pps_slice_chroma_qp_offsets_present_flag = pps->pic_slice_level_chroma_qp_offsets_present_flag;
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info->weighted_pred_flag = pps->weighted_pred_flag;
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info->weighted_bipred_flag = pps->weighted_bipred_flag;
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info->transquant_bypass_enabled_flag = pps->transquant_bypass_enable_flag;
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info->tiles_enabled_flag = pps->tiles_enabled_flag;
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info->entropy_coding_sync_enabled_flag = pps->entropy_coding_sync_enabled_flag;
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if (info->tiles_enabled_flag) {
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/** Only valid if tiles_enabled_flag is set. Ignored otherwise. */
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info->num_tile_columns_minus1 = pps->num_tile_columns - 1;
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/** Only valid if tiles_enabled_flag is set. Ignored otherwise. */
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info->num_tile_rows_minus1 = pps->num_tile_rows - 1;
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/** Only valid if tiles_enabled_flag is set. Ignored otherwise. */
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info->uniform_spacing_flag = pps->uniform_spacing_flag;
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/** Only need to set 0..num_tile_columns_minus1. The struct
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definition reserves up to the maximum of 20. Invalid values are
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ignored. */
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for (ssize_t i = 0; i < pps->num_tile_columns; i++) {
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info->column_width_minus1[i] = pps->column_width[i] - 1;
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}
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/** Only need to set 0..num_tile_rows_minus1. The struct
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definition reserves up to the maximum of 22. Invalid values are
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ignored.*/
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for (ssize_t i = 0; i < pps->num_tile_rows; i++) {
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info->row_height_minus1[i] = pps->row_height[i] - 1;
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}
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/** Only needed if tiles_enabled_flag is set. Invalid values are
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ignored. */
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info->loop_filter_across_tiles_enabled_flag = pps->loop_filter_across_tiles_enabled_flag;
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}
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info->pps_loop_filter_across_slices_enabled_flag = pps->seq_loop_filter_across_slices_enabled_flag;
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info->deblocking_filter_control_present_flag = pps->deblocking_filter_control_present_flag;
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/** Only valid if deblocking_filter_control_present_flag is set. Ignored
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otherwise. */
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info->deblocking_filter_override_enabled_flag = pps->deblocking_filter_override_enabled_flag;
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/** Only valid if deblocking_filter_control_present_flag is set. Ignored
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otherwise. */
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info->pps_deblocking_filter_disabled_flag = pps->disable_dbf;
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/** Only valid if deblocking_filter_control_present_flag is set and
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pps_deblocking_filter_disabled_flag is not set. Ignored otherwise.*/
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info->pps_beta_offset_div2 = pps->beta_offset / 2;
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/** Only valid if deblocking_filter_control_present_flag is set and
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pps_deblocking_filter_disabled_flag is not set. Ignored otherwise. */
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info->pps_tc_offset_div2 = pps->tc_offset / 2;
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info->lists_modification_present_flag = pps->lists_modification_present_flag;
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info->log2_parallel_merge_level_minus2 = pps->log2_parallel_merge_level - 2;
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info->slice_segment_header_extension_present_flag = pps->slice_header_extension_present_flag;
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/** \name HEVC Slice Segment Header
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*
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* Copies of the HEVC Slice Segment Header bitstream fields and calculated
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* values detailed in the specification.
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* @{ */
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/** Set to 1 if nal_unit_type is equal to IDR_W_RADL or IDR_N_LP.
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Set to zero otherwise. */
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info->IDRPicFlag = IS_IDR(h);
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/** Set to 1 if nal_unit_type in the range of BLA_W_LP to
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RSV_IRAP_VCL23, inclusive. Set to zero otherwise.*/
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info->RAPPicFlag = IS_IRAP(h);
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/** See section 7.4.7.1 of the specification. */
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info->CurrRpsIdx = sps->nb_st_rps;
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if (sh->short_term_ref_pic_set_sps_flag == 1) {
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for (size_t i = 0; i < sps->nb_st_rps; i++) {
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if (sh->short_term_rps == &sps->st_rps[i]) {
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info->CurrRpsIdx = i;
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break;
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}
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}
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}
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/** See section 7.4.7.2 of the specification. */
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info->NumPocTotalCurr = ff_hevc_frame_nb_refs(h);
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if (sh->short_term_ref_pic_set_sps_flag == 0 && sh->short_term_rps) {
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/** Corresponds to specification field, NumDeltaPocs[RefRpsIdx].
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Only applicable when short_term_ref_pic_set_sps_flag == 0.
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Implementations will ignore this value in other cases. See 7.4.8. */
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info->NumDeltaPocsOfRefRpsIdx = sh->short_term_rps->rps_idx_num_delta_pocs;
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}
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/** Section 7.6.3.1 of the H.265/HEVC Specification defines the syntax of
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the slice_segment_header. This header contains information that
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some VDPAU implementations may choose to skip. The VDPAU API
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requires client applications to track the number of bits used in the
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slice header for structures associated with short term and long term
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reference pictures. First, VDPAU requires the number of bits used by
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the short_term_ref_pic_set array in the slice_segment_header. */
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info->NumShortTermPictureSliceHeaderBits = sh->short_term_ref_pic_set_size;
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/** Second, VDPAU requires the number of bits used for long term reference
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pictures in the slice_segment_header. This is equal to the number
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of bits used for the contents of the block beginning with
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"if(long_term_ref_pics_present_flag)". */
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info->NumLongTermPictureSliceHeaderBits = sh->long_term_ref_pic_set_size;
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/** @} */
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/** Slice Decoding Process - Picture Order Count */
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/** The value of PicOrderCntVal of the picture in the access unit
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containing the SEI message. The picture being decoded. */
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info->CurrPicOrderCntVal = h->poc;
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/** Slice Decoding Process - Reference Picture Sets */
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for (size_t i = 0; i < 16; i++) {
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info->RefPics[i] = VDP_INVALID_HANDLE;
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info->PicOrderCntVal[i] = 0;
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info->IsLongTerm[i] = 0;
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}
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for (size_t i = 0, j = 0; i < FF_ARRAY_ELEMS(h->DPB); i++) {
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const HEVCFrame *frame = &h->DPB[i];
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if (frame != h->ref && (frame->flags & (HEVC_FRAME_FLAG_LONG_REF |
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HEVC_FRAME_FLAG_SHORT_REF))) {
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if (j > 16) {
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av_log(avctx, AV_LOG_WARNING,
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"VDPAU only supports up to 16 references in the DPB. "
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"This frame may not be decoded correctly.\n");
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break;
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}
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/** Array of video reference surfaces.
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Set any unused positions to VDP_INVALID_HANDLE. */
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info->RefPics[j] = ff_vdpau_get_surface_id(frame->frame);
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/** Array of picture order counts. These correspond to positions
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in the RefPics array. */
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info->PicOrderCntVal[j] = frame->poc;
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/** Array used to specify whether a particular RefPic is
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a long term reference. A value of "1" indicates a long-term
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reference. */
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// XXX: Setting this caused glitches in the nvidia implementation
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// Always setting it to zero, produces correct results
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//info->IsLongTerm[j] = frame->flags & HEVC_FRAME_FLAG_LONG_REF;
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info->IsLongTerm[j] = 0;
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j++;
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}
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}
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/** Copy of specification field, see Section 8.3.2 of the
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H.265/HEVC Specification. */
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info->NumPocStCurrBefore = h->rps[ST_CURR_BEF].nb_refs;
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if (info->NumPocStCurrBefore > 8) {
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av_log(avctx, AV_LOG_WARNING,
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"VDPAU only supports up to 8 references in StCurrBefore. "
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"This frame may not be decoded correctly.\n");
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info->NumPocStCurrBefore = 8;
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}
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/** Copy of specification field, see Section 8.3.2 of the
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H.265/HEVC Specification. */
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info->NumPocStCurrAfter = h->rps[ST_CURR_AFT].nb_refs;
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if (info->NumPocStCurrAfter > 8) {
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av_log(avctx, AV_LOG_WARNING,
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"VDPAU only supports up to 8 references in StCurrAfter. "
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"This frame may not be decoded correctly.\n");
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info->NumPocStCurrAfter = 8;
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}
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/** Copy of specification field, see Section 8.3.2 of the
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H.265/HEVC Specification. */
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info->NumPocLtCurr = h->rps[LT_CURR].nb_refs;
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if (info->NumPocLtCurr > 8) {
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av_log(avctx, AV_LOG_WARNING,
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"VDPAU only supports up to 8 references in LtCurr. "
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"This frame may not be decoded correctly.\n");
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info->NumPocLtCurr = 8;
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}
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/** Reference Picture Set list, one of the short-term RPS. These
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correspond to positions in the RefPics array. */
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for (ssize_t i = 0, j = 0; i < h->rps[ST_CURR_BEF].nb_refs; i++) {
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HEVCFrame *frame = h->rps[ST_CURR_BEF].ref[i];
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if (frame) {
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uint8_t found = 0;
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uintptr_t id = ff_vdpau_get_surface_id(frame->frame);
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for (size_t k = 0; k < 16; k++) {
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if (id == info->RefPics[k]) {
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info->RefPicSetStCurrBefore[j] = k;
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j++;
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found = 1;
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break;
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}
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}
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if (!found) {
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av_log(avctx, AV_LOG_WARNING, "missing surface: %p\n",
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(void *)id);
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}
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} else {
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av_log(avctx, AV_LOG_WARNING, "missing STR Before frame: %zd\n", i);
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}
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}
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/** Reference Picture Set list, one of the short-term RPS. These
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correspond to positions in the RefPics array. */
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for (ssize_t i = 0, j = 0; i < h->rps[ST_CURR_AFT].nb_refs; i++) {
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HEVCFrame *frame = h->rps[ST_CURR_AFT].ref[i];
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if (frame) {
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uint8_t found = 0;
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uintptr_t id = ff_vdpau_get_surface_id(frame->frame);
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for (size_t k = 0; k < 16; k++) {
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if (id == info->RefPics[k]) {
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info->RefPicSetStCurrAfter[j] = k;
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j++;
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found = 1;
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break;
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}
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}
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if (!found) {
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av_log(avctx, AV_LOG_WARNING, "missing surface: %p\n",
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(void *)id);
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}
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} else {
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av_log(avctx, AV_LOG_WARNING, "missing STR After frame: %zd\n", i);
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}
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}
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/** Reference Picture Set list, one of the long-term RPS. These
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correspond to positions in the RefPics array. */
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for (ssize_t i = 0, j = 0; i < h->rps[LT_CURR].nb_refs; i++) {
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HEVCFrame *frame = h->rps[LT_CURR].ref[i];
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if (frame) {
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uint8_t found = 0;
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uintptr_t id = ff_vdpau_get_surface_id(frame->frame);
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for (size_t k = 0; k < 16; k++) {
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if (id == info->RefPics[k]) {
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info->RefPicSetLtCurr[j] = k;
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j++;
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found = 1;
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break;
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}
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}
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if (!found) {
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av_log(avctx, AV_LOG_WARNING, "missing surface: %p\n",
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(void *)id);
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}
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|
} else {
|
|
av_log(avctx, AV_LOG_WARNING, "missing LTR frame: %zd\n", i);
|
|
}
|
|
}
|
|
|
|
return ff_vdpau_common_start_frame(pic_ctx, buffer, size);
|
|
}
|
|
|
|
static const uint8_t start_code_prefix[3] = { 0x00, 0x00, 0x01 };
|
|
|
|
static int vdpau_hevc_decode_slice(AVCodecContext *avctx,
|
|
const uint8_t *buffer, uint32_t size)
|
|
{
|
|
HEVCContext *h = avctx->priv_data;
|
|
struct vdpau_picture_context *pic_ctx = h->ref->hwaccel_picture_private;
|
|
int val;
|
|
|
|
val = ff_vdpau_add_buffer(pic_ctx, start_code_prefix, 3);
|
|
if (val)
|
|
return val;
|
|
|
|
val = ff_vdpau_add_buffer(pic_ctx, buffer, size);
|
|
if (val)
|
|
return val;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int vdpau_hevc_end_frame(AVCodecContext *avctx)
|
|
{
|
|
HEVCContext *h = avctx->priv_data;
|
|
struct vdpau_picture_context *pic_ctx = h->ref->hwaccel_picture_private;
|
|
int val;
|
|
|
|
val = ff_vdpau_common_end_frame(avctx, h->ref->frame, pic_ctx);
|
|
if (val < 0)
|
|
return val;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int vdpau_hevc_init(AVCodecContext *avctx)
|
|
{
|
|
VdpDecoderProfile profile;
|
|
uint32_t level = avctx->level;
|
|
|
|
switch (avctx->profile) {
|
|
case FF_PROFILE_HEVC_MAIN:
|
|
profile = VDP_DECODER_PROFILE_HEVC_MAIN;
|
|
break;
|
|
case FF_PROFILE_HEVC_MAIN_10:
|
|
profile = VDP_DECODER_PROFILE_HEVC_MAIN_10;
|
|
break;
|
|
case FF_PROFILE_HEVC_MAIN_STILL_PICTURE:
|
|
profile = VDP_DECODER_PROFILE_HEVC_MAIN_STILL;
|
|
break;
|
|
default:
|
|
return AVERROR(ENOTSUP);
|
|
}
|
|
|
|
return ff_vdpau_common_init(avctx, profile, level);
|
|
}
|
|
|
|
AVHWAccel ff_hevc_vdpau_hwaccel = {
|
|
.name = "hevc_vdpau",
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.id = AV_CODEC_ID_HEVC,
|
|
.pix_fmt = AV_PIX_FMT_VDPAU,
|
|
.start_frame = vdpau_hevc_start_frame,
|
|
.end_frame = vdpau_hevc_end_frame,
|
|
.decode_slice = vdpau_hevc_decode_slice,
|
|
.frame_priv_data_size = sizeof(struct vdpau_picture_context),
|
|
.init = vdpau_hevc_init,
|
|
.uninit = ff_vdpau_common_uninit,
|
|
.priv_data_size = sizeof(VDPAUContext),
|
|
};
|