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317 lines
12 KiB
C
317 lines
12 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_vp9.h
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* \brief The VP9 decoding API
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*
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* This file contains the \ref api_dec_vp9 "VP9 decoding API".
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*/
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#ifndef VA_DEC_VP9_H
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#define VA_DEC_VP9_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_vp9 VP9 decoding API
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*
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* This VP9 decoding API supports 8-bit 420 format only.
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*
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* @{
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*/
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/**
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* \brief VP9 Decoding Picture Parameter Buffer Structure
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*
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* This structure conveys picture level parameters.
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* App should send a surface with this data structure down to VAAPI once
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* per frame.
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*
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*/
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typedef struct _VADecPictureParameterBufferVP9
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{
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/**@{*/
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/** \brief picture width
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* Picture original resolution. The value may not be multiple of 8.
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*/
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uint16_t frame_width;
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/** \brief picture height
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* Picture original resolution. The value may not be multiple of 8.
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*/
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uint16_t frame_height;
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/** \brief Surface indices of reference frames in DPB.
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*
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* Each entry of the list specifies the surface index of the picture
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* that is referred by current picture or will be referred by any future
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* picture.
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* Application who calls this API should update this list based on the
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* refreshing information from VP9 bitstream.
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*/
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VASurfaceID reference_frames[8];
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union
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{
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struct
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{
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/** \brief flags for current picture
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* same syntax and semantic as those in VP9 code
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*/
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uint32_t subsampling_x : 1;
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uint32_t subsampling_y : 1;
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uint32_t frame_type : 1;
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uint32_t show_frame : 1;
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uint32_t error_resilient_mode : 1;
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uint32_t intra_only : 1;
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uint32_t allow_high_precision_mv : 1;
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uint32_t mcomp_filter_type : 3;
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uint32_t frame_parallel_decoding_mode : 1;
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uint32_t reset_frame_context : 2;
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uint32_t refresh_frame_context : 1;
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uint32_t frame_context_idx : 2;
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uint32_t segmentation_enabled : 1;
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/** \brief corresponds to variable temporal_update in VP9 code.
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*/
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uint32_t segmentation_temporal_update : 1;
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/** \brief corresponds to variable update_mb_segmentation_map
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* in VP9 code.
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*/
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uint32_t segmentation_update_map : 1;
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/** \brief Index of reference_frames[] and points to the
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* LAST reference frame.
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* It corresponds to active_ref_idx[0] in VP9 code.
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*/
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uint32_t last_ref_frame : 3;
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/** \brief Sign Bias of the LAST reference frame.
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* It corresponds to ref_frame_sign_bias[LAST_FRAME] in VP9 code.
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*/
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uint32_t last_ref_frame_sign_bias : 1;
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/** \brief Index of reference_frames[] and points to the
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* GOLDERN reference frame.
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* It corresponds to active_ref_idx[1] in VP9 code.
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*/
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uint32_t golden_ref_frame : 3;
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/** \brief Sign Bias of the GOLDERN reference frame.
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* Corresponds to ref_frame_sign_bias[GOLDERN_FRAME] in VP9 code.
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*/
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uint32_t golden_ref_frame_sign_bias : 1;
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/** \brief Index of reference_frames[] and points to the
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* ALTERNATE reference frame.
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* Corresponds to active_ref_idx[2] in VP9 code.
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*/
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uint32_t alt_ref_frame : 3;
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/** \brief Sign Bias of the ALTERNATE reference frame.
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* Corresponds to ref_frame_sign_bias[ALTREF_FRAME] in VP9 code.
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*/
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uint32_t alt_ref_frame_sign_bias : 1;
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/** \brief Lossless Mode
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* LosslessFlag = base_qindex == 0 &&
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* y_dc_delta_q == 0 &&
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* uv_dc_delta_q == 0 &&
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* uv_ac_delta_q == 0;
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* Where base_qindex, y_dc_delta_q, uv_dc_delta_q and uv_ac_delta_q
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* are all variables in VP9 code.
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*/
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uint32_t lossless_flag : 1;
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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 VP9 code */
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uint8_t filter_level;
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uint8_t sharpness_level;
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/** \brief number of tile rows specified by (1 << log2_tile_rows).
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* It corresponds the variable with same name in VP9 code.
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*/
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uint8_t log2_tile_rows;
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/** \brief number of tile columns specified by (1 << log2_tile_columns).
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* It corresponds the variable with same name in VP9 code.
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*/
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uint8_t log2_tile_columns;
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/** \brief Number of bytes taken up by the uncompressed frame header,
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* which corresponds to byte length of function
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* read_uncompressed_header() in VP9 code.
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* Specifically, it is the byte count from bit stream buffer start to
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* the last byte of uncompressed frame header.
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* If there are other meta data in the buffer before uncompressed header,
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* its size should be also included here.
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*/
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uint8_t frame_header_length_in_bytes;
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/** \brief The byte count of compressed header the bitstream buffer,
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* which corresponds to syntax first_partition_size in code.
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*/
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uint16_t first_partition_size;
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/** These values are segment probabilities with same names in VP9
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* function setup_segmentation(). They should be parsed directly from
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* bitstream by application.
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*/
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uint8_t mb_segment_tree_probs[7];
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uint8_t segment_pred_probs[3];
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/** \brief VP9 Profile definition
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* value can be 0 or 1.
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*/
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uint8_t profile;
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/**@}*/
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} VADecPictureParameterBufferVP9;
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/**
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* \brief VP9 Segmentation Parameter Data Structure
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*
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* This structure conveys per segment parameters.
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* 8 of this data structure will be included in VASegmentationParameterBufferVP9
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* and sent to API in a single buffer.
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*
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*/
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typedef struct _VASegmentParameterVP9
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{
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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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/** \brief Indicates if per segment reference frame indicator
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* is enabled.
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* Corresponding to variable feature_enabled when
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* j == SEG_LVL_REF_FRAME in function setup_segmentation() VP9 code.
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*/
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uint16_t segment_reference_enabled : 1;
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/** \brief Specifies per segment reference indication.
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* 0: reserved
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* 1: Last ref
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* 2: golden
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* 3: altref
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* Value can be derived from variable data when
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* j == SEG_LVL_REF_FRAME in function setup_segmentation() VP9 code.
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*/
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uint16_t segment_reference : 2;
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/** \brief Indicates if per segment skip feature is enabled.
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* Corresponding to variable feature_enabled when
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* j == SEG_LVL_SKIP in function setup_segmentation() VP9 code.
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*/
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uint16_t segment_reference_skipped : 1;
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} fields;
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uint16_t value;
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} segment_flags;
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/** \brief Specifies the filter level information per segment.
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* The value corresponds to variable lfi->lvl[seg][ref][mode] in VP9 code,
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* where m is [ref], and n is [mode] in FilterLevel[m][n].
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*/
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uint8_t filter_level[4][2];
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/** \brief Specifies per segment Luma AC quantization scale.
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* Corresponding to y_dequant[qindex][1] in vp9_mb_init_quantizer()
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* function of VP9 code.
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*/
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int16_t luma_ac_quant_scale;
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/** \brief Specifies per segment Luma DC quantization scale.
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* Corresponding to y_dequant[qindex][0] in vp9_mb_init_quantizer()
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* function of VP9 code.
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*/
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int16_t luma_dc_quant_scale;
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/** \brief Specifies per segment Chroma AC quantization scale.
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* Corresponding to uv_dequant[qindex][1] in vp9_mb_init_quantizer()
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* function of VP9 code.
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*/
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int16_t chroma_ac_quant_scale;
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/** \brief Specifies per segment Chroma DC quantization scale.
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* Corresponding to uv_dequant[qindex][0] in vp9_mb_init_quantizer()
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* function of VP9 code.
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*/
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int16_t chroma_dc_quant_scale;
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/**@}*/
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} VASegmentParameterVP9;
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/**
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* \brief VP9 Slice Parameter Buffer Structure
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*
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* This structure conveys parameters related to segmentation data and should be
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* sent once per frame.
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*
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* When segmentation is disabled, only SegParam[0] has valid values,
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* all other entries should be populated with 0.
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* Otherwise, all eight entries should be valid.
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*
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* Slice data buffer of VASliceDataBufferType is used
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* to send the bitstream which should include whole or part of partition 0
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* (at least compressed header) to the end of frame.
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*
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*/
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typedef struct _VASliceParameterBufferVP9
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{
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/**@{*/
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/** \brief The byte count of current frame in the bitstream buffer,
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* starting from first byte of the buffer.
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* It uses the name slice_data_size to be consitent with other codec,
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* but actually means frame_data_size.
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*/
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uint32_t slice_data_size;
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/**
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* offset to the first byte of partition data (control partition)
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*/
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uint32_t slice_data_offset;
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/**
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* see VA_SLICE_DATA_FLAG_XXX definitions
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*/
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uint32_t slice_data_flag;
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/**
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* \brief per segment information
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*/
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VASegmentParameterVP9 seg_param[8];
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/**@}*/
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} VASliceParameterBufferVP9;
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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_VP9_H */
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