428 lines
17 KiB
C
428 lines
17 KiB
C
/*
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* Copyright (c) 2014 Intel Corporation. All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL INTEL AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/**
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* \file va_dec_hevc.h
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* \brief The HEVC decoding API
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*
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* This file contains the \ref api_dec_hevc "HEVC decoding API".
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*/
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#ifndef VA_DEC_HEVC_H
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#define VA_DEC_HEVC_H
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#include <stdint.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* \defgroup api_dec_hevc HEVC decoding API
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*
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* This HEVC decoding API supports Main and Main Still Picture profiles.
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* And it supports both short slice format and long slice format.
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*
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* @{
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*/
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/**
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* \brief HEVC Decoding Picture Parameter Buffer Structure
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*
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* This structure conveys picture level parameters and should be sent once
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* per frame.
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*
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*/
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typedef struct _VAPictureParameterBufferHEVC
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{
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/** \brief buffer description of decoded current picture
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* only VA_PICTURE_HEVC_FIELD_PIC and VA_PICTURE_HEVC_BOTTOM_FIELD
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* of "flags" fields are meaningful.
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*/
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VAPictureHEVC CurrPic;
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/** \brief buffer description of reference frames in DPB */
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VAPictureHEVC ReferenceFrames[15];
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/** \brief picture width, shall be integer multiple of minimum CB size. */
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uint16_t pic_width_in_luma_samples;
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/** \brief picture height, shall be integer multiple of minimum CB size. */
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uint16_t pic_height_in_luma_samples;
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union
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{
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struct
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{
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/** following flags have same syntax and semantic as those in HEVC spec */
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uint32_t chroma_format_idc : 2;
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uint32_t separate_colour_plane_flag : 1;
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uint32_t pcm_enabled_flag : 1;
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uint32_t scaling_list_enabled_flag : 1;
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uint32_t transform_skip_enabled_flag : 1;
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uint32_t amp_enabled_flag : 1;
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uint32_t strong_intra_smoothing_enabled_flag : 1;
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uint32_t sign_data_hiding_enabled_flag : 1;
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uint32_t constrained_intra_pred_flag : 1;
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uint32_t cu_qp_delta_enabled_flag : 1;
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uint32_t weighted_pred_flag : 1;
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uint32_t weighted_bipred_flag : 1;
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uint32_t transquant_bypass_enabled_flag : 1;
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uint32_t tiles_enabled_flag : 1;
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uint32_t entropy_coding_sync_enabled_flag : 1;
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uint32_t pps_loop_filter_across_slices_enabled_flag : 1;
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uint32_t loop_filter_across_tiles_enabled_flag : 1;
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uint32_t pcm_loop_filter_disabled_flag : 1;
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/** set based on sps_max_num_reorder_pics of current temporal layer. */
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uint32_t NoPicReorderingFlag : 1;
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/** picture has no B slices */
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uint32_t NoBiPredFlag : 1;
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uint32_t ReservedBits : 11;
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} bits;
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uint32_t value;
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} pic_fields;
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/** following parameters have same syntax with those in HEVC spec */
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/** \brief DPB size for current temporal layer */
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uint8_t sps_max_dec_pic_buffering_minus1;
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uint8_t bit_depth_luma_minus8;
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uint8_t bit_depth_chroma_minus8;
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uint8_t pcm_sample_bit_depth_luma_minus1;
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uint8_t pcm_sample_bit_depth_chroma_minus1;
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uint8_t log2_min_luma_coding_block_size_minus3;
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uint8_t log2_diff_max_min_luma_coding_block_size;
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uint8_t log2_min_transform_block_size_minus2;
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uint8_t log2_diff_max_min_transform_block_size;
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uint8_t log2_min_pcm_luma_coding_block_size_minus3;
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uint8_t log2_diff_max_min_pcm_luma_coding_block_size;
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uint8_t max_transform_hierarchy_depth_intra;
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uint8_t max_transform_hierarchy_depth_inter;
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int8_t init_qp_minus26;
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uint8_t diff_cu_qp_delta_depth;
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int8_t pps_cb_qp_offset;
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int8_t pps_cr_qp_offset;
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uint8_t log2_parallel_merge_level_minus2;
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uint8_t num_tile_columns_minus1;
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uint8_t num_tile_rows_minus1;
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/**
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* when uniform_spacing_flag equals 1, application should populate
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* column_width_minus[], and row_height_minus1[] with approperiate values.
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*/
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uint16_t column_width_minus1[19];
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uint16_t row_height_minus1[21];
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/**
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* The Following Parameters are needed for Short Slice Format Only.
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* Only format decoding can ignore them.
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*/
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/**
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* \brief Parameters needed for parsing slice segment headers
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*/
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union
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{
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struct
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{
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/** following parameters have same syntax with those in HEVC spec */
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uint32_t lists_modification_present_flag : 1;
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uint32_t long_term_ref_pics_present_flag : 1;
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uint32_t sps_temporal_mvp_enabled_flag : 1;
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uint32_t cabac_init_present_flag : 1;
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uint32_t output_flag_present_flag : 1;
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uint32_t dependent_slice_segments_enabled_flag : 1;
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uint32_t pps_slice_chroma_qp_offsets_present_flag : 1;
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uint32_t sample_adaptive_offset_enabled_flag : 1;
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uint32_t deblocking_filter_override_enabled_flag : 1;
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uint32_t pps_disable_deblocking_filter_flag : 1;
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uint32_t slice_segment_header_extension_present_flag : 1;
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/** current picture with NUT between 16 and 21 inclusive */
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uint32_t RapPicFlag : 1;
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/** current picture with NUT between 19 and 20 inclusive */
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uint32_t IdrPicFlag : 1;
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/** current picture has only intra slices */
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uint32_t IntraPicFlag : 1;
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uint32_t ReservedBits : 18;
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} bits;
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uint32_t value;
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} slice_parsing_fields;
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/** following parameters have same syntax with those in HEVC spec */
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uint8_t log2_max_pic_order_cnt_lsb_minus4;
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uint8_t num_short_term_ref_pic_sets;
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uint8_t num_long_term_ref_pic_sps;
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uint8_t num_ref_idx_l0_default_active_minus1;
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uint8_t num_ref_idx_l1_default_active_minus1;
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int8_t pps_beta_offset_div2;
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int8_t pps_tc_offset_div2;
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uint8_t num_extra_slice_header_bits;
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/**
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* \brief number of bits that structure
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* short_term_ref_pic_set( num_short_term_ref_pic_sets ) takes in slice
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* segment header when short_term_ref_pic_set_sps_flag equals 0.
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* if short_term_ref_pic_set_sps_flag equals 1, the value should be 0.
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* the bit count is calculated after emulation prevention bytes are removed
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* from bit streams.
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* This variable is used for accelorater to skip parsing the
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* short_term_ref_pic_set( num_short_term_ref_pic_sets ) structure.
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*/
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uint32_t st_rps_bits;
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} VAPictureParameterBufferHEVC;
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/**
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* \brief HEVC Slice Parameter Buffer Structure For Short Format
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*
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* VASliceParameterBufferBaseHEVC structure should be accompanied by a
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* slice data buffer, which holds the whole raw slice NAL unit bit streams
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* including start code prefix and emulation prevention bytes not removed.
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*
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* This structure conveys parameters related to slice segment header and should
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* be sent once per slice.
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*
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* For long format, this data structure is not sent by application.
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*
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*/
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typedef struct _VASliceParameterBufferBaseHEVC
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{
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/** @name Codec-independent Slice Parameter Buffer base. */
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/**@{*/
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/** \brief Number of bytes in the slice data buffer for this slice
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* counting from and including NAL unit header.
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*/
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uint32_t slice_data_size;
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/** \brief The offset to the NAL unit header for this slice */
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uint32_t slice_data_offset;
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/** \brief Slice data buffer flags. See \c VA_SLICE_DATA_FLAG_XXX. */
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uint16_t slice_data_flag;
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/**@}*/
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} VASliceParameterBufferBaseHEVC;
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/**
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* \brief HEVC Slice Parameter Buffer Structure For Long Format
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*
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* VASliceParameterBufferHEVC structure should be accompanied by a
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* slice data buffer, which holds the whole raw slice NAL unit bit streams
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* including start code prefix and emulation prevention bytes not removed.
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*
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* This structure conveys parameters related to slice segment header and should
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* be sent once per slice.
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*
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* For short format, this data structure is not sent by application.
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*
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*/
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typedef struct _VASliceParameterBufferHEVC
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{
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/** @name Codec-independent Slice Parameter Buffer base. */
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/**@{*/
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/** \brief Number of bytes in the slice data buffer for this slice
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* counting from and including NAL unit header.
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*/
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uint32_t slice_data_size;
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/** \brief The offset to the NAL unit header for this slice */
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uint32_t slice_data_offset;
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/** \brief Slice data buffer flags. See \c VA_SLICE_DATA_FLAG_XXX. */
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uint16_t slice_data_flag;
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/**
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* \brief Byte offset from NAL unit header to the begining of slice_data().
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*
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* This byte offset is relative to and includes the NAL unit header
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* and represents the number of bytes parsed in the slice_header()
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* after the removal of any emulation prevention bytes in
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* there. However, the slice data buffer passed to the hardware is
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* the original bitstream, thus including any emulation prevention
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* bytes.
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*/
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uint32_t slice_data_byte_offset;
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/** HEVC syntax element. */
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uint32_t slice_segment_address;
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/** \brief index into ReferenceFrames[]
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* RefPicList[0][] corresponds to RefPicList0[] of HEVC variable.
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* RefPicList[1][] corresponds to RefPicList1[] of HEVC variable.
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* value range [0..14, 0xFF], where 0xFF indicates invalid entry.
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*/
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uint8_t RefPicList[2][15];
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union
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{
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uint32_t value;
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struct
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{
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/** current slice is last slice of picture. */
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uint32_t LastSliceOfPic : 1;
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/** HEVC syntax element. */
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uint32_t dependent_slice_segment_flag : 1;
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/** HEVC syntax element. */
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uint32_t slice_type : 2;
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/** HEVC syntax element. */
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uint32_t color_plane_id : 2;
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/** HEVC syntax element. */
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uint32_t slice_sao_luma_flag : 1;
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/** HEVC syntax element. */
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uint32_t slice_sao_chroma_flag : 1;
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/** HEVC syntax element. */
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uint32_t mvd_l1_zero_flag : 1;
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/** HEVC syntax element. */
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uint32_t cabac_init_flag : 1;
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/** HEVC syntax element. */
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uint32_t slice_temporal_mvp_enabled_flag : 1;
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/** HEVC syntax element. */
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uint32_t slice_deblocking_filter_disabled_flag : 1;
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/** HEVC syntax element. */
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uint32_t collocated_from_l0_flag : 1;
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/** HEVC syntax element. */
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uint32_t slice_loop_filter_across_slices_enabled_flag : 1;
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uint32_t reserved : 18;
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} fields;
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} LongSliceFlags;
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/** HEVC syntax element. Collocated Reference Picture Index.
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* index to RefPicList[0][] or RefPicList[1][].
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* when slice_temporal_mvp_enabled_flag equals 0, it should take value 0xFF.
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* value range [0..14, 0xFF].
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*/
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uint8_t collocated_ref_idx;
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/** HEVC syntax element.
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* if num_ref_idx_active_override_flag equals 0, host decoder should
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* set its value to num_ref_idx_l0_default_minus1.
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*/
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uint8_t num_ref_idx_l0_active_minus1;
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/** HEVC syntax element.
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* if num_ref_idx_active_override_flag equals 0, host decoder should
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* set its value to num_ref_idx_l1_default_minus1.
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*/
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uint8_t num_ref_idx_l1_active_minus1;
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/** HEVC syntax element. */
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int8_t slice_qp_delta;
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/** HEVC syntax element. */
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int8_t slice_cb_qp_offset;
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/** HEVC syntax element. */
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int8_t slice_cr_qp_offset;
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/** HEVC syntax element. */
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int8_t slice_beta_offset_div2;
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/** HEVC syntax element. */
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int8_t slice_tc_offset_div2;
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/** HEVC syntax element. */
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uint8_t luma_log2_weight_denom;
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/** HEVC syntax element. */
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int8_t delta_chroma_log2_weight_denom;
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/** HEVC syntax element. */
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int8_t delta_luma_weight_l0[15];
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/** HEVC syntax element. */
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int8_t luma_offset_l0[15];
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/** HEVC syntax element. */
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int8_t delta_chroma_weight_l0[15][2];
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/** corresponds to HEVC spec variable of the same name. */
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int8_t ChromaOffsetL0[15][2];
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/** HEVC syntax element. */
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int8_t delta_luma_weight_l1[15];
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/** HEVC syntax element. */
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int8_t luma_offset_l1[15];
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/** HEVC syntax element. */
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int8_t delta_chroma_weight_l1[15][2];
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/** corresponds to HEVC spec variable of the same name. */
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int8_t ChromaOffsetL1[15][2];
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/** HEVC syntax element. */
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uint8_t five_minus_max_num_merge_cand;
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/**@}*/
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} VASliceParameterBufferHEVC;
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/**
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* \brief HEVC Inverse Quantization Matrix Buffer Structure
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*
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* This structure is sent once per frame,
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* and only when scaling_list_enabled_flag = 1.
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* When sps_scaling_list_data_present_flag = 0, app still
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* needs to send in this structure with default matrix values.
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*
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* Matrix entries are in raster scan order which follows HEVC spec.
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*/
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typedef struct _VAIQMatrixBufferHEVC
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{
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/**
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* \brief scaling lists,
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* corresponds to same HEVC spec syntax element
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* ScalingList[ i ][ MatrixID ][ j ].
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*
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* \brief 4x4 scaling,
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* correspongs i = 0, MatrixID is in the range of 0 to 5,
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* inclusive. And j is in the range of 0 to 15, inclusive.
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*/
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uint8_t ScalingList4x4[6][16];
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/**
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* \brief 8x8 scaling,
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* correspongs i = 1, MatrixID is in the range of 0 to 5,
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* inclusive. And j is in the range of 0 to 63, inclusive.
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*/
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uint8_t ScalingList8x8[6][64];
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/**
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* \brief 16x16 scaling,
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* correspongs i = 2, MatrixID is in the range of 0 to 5,
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* inclusive. And j is in the range of 0 to 63, inclusive.
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*/
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uint8_t ScalingList16x16[6][64];
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/**
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* \brief 32x32 scaling,
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* correspongs i = 3, MatrixID is in the range of 0 to 1,
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* inclusive. And j is in the range of 0 to 63, inclusive.
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*/
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uint8_t ScalingList32x32[2][64];
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/**
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* \brief DC values of the 16x16 scaling lists,
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* corresponds to HEVC spec syntax
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* scaling_list_dc_coef_minus8[ sizeID - 2 ][ matrixID ] + 8
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* with sizeID = 2 and matrixID in the range of 0 to 5, inclusive.
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*/
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uint8_t ScalingListDC16x16[6];
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/**
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* \brief DC values of the 32x32 scaling lists,
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* corresponds to HEVC spec syntax
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* scaling_list_dc_coef_minus8[ sizeID - 2 ][ matrixID ] + 8
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* with sizeID = 3 and matrixID in the range of 0 to 1, inclusive.
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*/
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uint8_t ScalingListDC32x32[2];
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} VAIQMatrixBufferHEVC;
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/**@}*/
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#ifdef __cplusplus
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}
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#endif
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#endif /* VA_DEC_HEVC_H */
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