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250 lines
8.6 KiB
C
250 lines
8.6 KiB
C
/*
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* Copyright (c) 2007-2012 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_vp.h
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* \brief VP8 decoding API
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*
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* This file contains the \ref api_dec_vp8 "VP8 decoding API".
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*/
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#ifndef VA_DEC_VP8_H
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#define VA_DEC_VP8_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_vp8 VP8 decoding API
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*
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* @{
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*/
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/**
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* \brief VPX Bool Coder Context structure
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*
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* This common structure is defined for potential sharing by other VP formats
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*
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*/
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typedef struct _VABoolCoderContextVPX {
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/* partition 0 "range" */
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uint8_t range;
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/* partition 0 "value" */
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uint8_t value;
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/*
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* 'partition 0 number of shifts before an output byte is available'
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* it is the number of remaining bits in 'value' for decoding, range [0, 7].
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*/
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uint8_t count;
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} VABoolCoderContextVPX;
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/**
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* \brief VP8 Decoding Picture Parameter Buffer Structure
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*
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* This structure conveys frame 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 _VAPictureParameterBufferVP8 {
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/* frame width in pixels */
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uint32_t frame_width;
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/* frame height in pixels */
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uint32_t frame_height;
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/* specifies the "last" reference frame */
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VASurfaceID last_ref_frame;
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/* specifies the "golden" reference frame */
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VASurfaceID golden_ref_frame;
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/* specifies the "alternate" referrence frame */
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VASurfaceID alt_ref_frame;
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/* specifies the out-of-loop deblocked frame, not used currently */
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VASurfaceID out_of_loop_frame;
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union {
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struct {
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/* same as key_frame in bitstream syntax, 0 means a key frame */
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uint32_t key_frame : 1;
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/* same as version in bitstream syntax */
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uint32_t version : 3;
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/* same as segmentation_enabled in bitstream syntax */
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uint32_t segmentation_enabled : 1;
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/* same as update_mb_segmentation_map in bitstream syntax */
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uint32_t update_mb_segmentation_map : 1;
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/* same as update_segment_feature_data in bitstream syntax */
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uint32_t update_segment_feature_data : 1;
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/* same as filter_type in bitstream syntax */
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uint32_t filter_type : 1;
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/* same as sharpness_level in bitstream syntax */
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uint32_t sharpness_level : 3;
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/* same as loop_filter_adj_enable in bitstream syntax */
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uint32_t loop_filter_adj_enable : 1;
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/* same as mode_ref_lf_delta_update in bitstream syntax */
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uint32_t mode_ref_lf_delta_update : 1;
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/* same as sign_bias_golden in bitstream syntax */
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uint32_t sign_bias_golden : 1;
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/* same as sign_bias_alternate in bitstream syntax */
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uint32_t sign_bias_alternate : 1;
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/* same as mb_no_coeff_skip in bitstream syntax */
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uint32_t mb_no_coeff_skip : 1;
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/* flag to indicate that loop filter should be disabled */
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uint32_t loop_filter_disable : 1;
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} bits;
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uint32_t value;
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} pic_fields;
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/*
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* probabilities of the segment_id decoding tree and same as
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* mb_segment_tree_probs in the spec.
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*/
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uint8_t mb_segment_tree_probs[3];
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/* Post-adjustment loop filter levels for the 4 segments */
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uint8_t loop_filter_level[4];
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/* loop filter deltas for reference frame based MB level adjustment */
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int8_t loop_filter_deltas_ref_frame[4];
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/* loop filter deltas for coding mode based MB level adjustment */
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int8_t loop_filter_deltas_mode[4];
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/* same as prob_skip_false in bitstream syntax */
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uint8_t prob_skip_false;
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/* same as prob_intra in bitstream syntax */
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uint8_t prob_intra;
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/* same as prob_last in bitstream syntax */
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uint8_t prob_last;
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/* same as prob_gf in bitstream syntax */
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uint8_t prob_gf;
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/*
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* list of 4 probabilities of the luma intra prediction mode decoding
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* tree and same as y_mode_probs in frame header
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*/
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uint8_t y_mode_probs[4];
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/*
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* list of 3 probabilities of the chroma intra prediction mode decoding
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* tree and same as uv_mode_probs in frame header
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*/
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uint8_t uv_mode_probs[3];
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/*
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* updated mv decoding probabilities and same as mv_probs in
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* frame header
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*/
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uint8_t mv_probs[2][19];
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VABoolCoderContextVPX bool_coder_ctx;
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/** \brief Reserved bytes for future use, must be zero */
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uint32_t va_reserved[VA_PADDING_LOW];
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} VAPictureParameterBufferVP8;
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/**
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* \brief VP8 Slice Parameter Buffer Structure
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*
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* This structure conveys parameters related to data partitions and should be
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* sent once per frame. Slice data buffer of VASliceDataBufferType is used
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* to send the partition data.
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*
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*/
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typedef struct _VASliceParameterBufferVP8 {
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/*
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* number of bytes in the slice data buffer for the partitions
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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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* offset to the first bit of MB from the first byte of partition data(slice_data_offset)
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*/
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uint32_t macroblock_offset;
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/*
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* Partitions
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* (1<<log2_nbr_of_dct_partitions)+1, count both control partition (frame header) and toke partition
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*/
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uint8_t num_of_partitions;
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/*
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* partition_size[0] is remaining bytes of control partition after parsed by application.
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* exclude current byte for the remaining bits in bool_coder_ctx.
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* exclude the uncompress data chunk since first_part_size 'excluding the uncompressed data chunk'
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*/
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uint32_t partition_size[9];
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/** \brief Reserved bytes for future use, must be zero */
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uint32_t va_reserved[VA_PADDING_LOW];
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} VASliceParameterBufferVP8;
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/**
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* \brief VP8 Coefficient Probability Data Buffer Structure
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*
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* Contains the contents of the token probability table, which may be
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* incrementally modified in the frame header. There are four dimensions to
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* the token probability array. The outermost dimension is indexed by the
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* type of plane being decoded; the next dimension is selected by the
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* position of the coefficient being decoded; the third dimension, * roughly
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* speaking, measures the "local complexity" or extent to which nearby
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* coefficients are non-zero; the fourth, and final, dimension of the token
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* probability array is indexed by the position in the token tree structure,
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* as are all tree probability arrays. This structure is sent once per frame.
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*
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*/
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typedef struct _VAProbabilityDataBufferVP8 {
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uint8_t dct_coeff_probs[4][8][3][11];
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/** \brief Reserved bytes for future use, must be zero */
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uint32_t va_reserved[VA_PADDING_LOW];
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} VAProbabilityDataBufferVP8;
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/**
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* \brief VP8 Inverse Quantization Matrix Buffer Structure
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*
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* Contains quantization indices for yac(0),ydc(1),y2dc(2),y2ac(3),uvdc(4),
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* uvac(5) for each segment (0-3). When segmentation is disabled, only
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* quantization_index[0][] will be used. This structure is sent once per frame.
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*/
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typedef struct _VAIQMatrixBufferVP8 {
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/*
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* array first dimensional is segment and 2nd dimensional is Q index
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* all Q indexs should be clipped to be range [0, 127]
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*/
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uint16_t quantization_index[4][6];
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/** \brief Reserved bytes for future use, must be zero */
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uint32_t va_reserved[VA_PADDING_LOW];
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} VAIQMatrixBufferVP8;
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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_VP8_H */
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