Source code
Revision control
Copy as Markdown
Other Tools
/*
* Copyright (c) 2014 Intel Corporation. All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL INTEL AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/**
* \file va_dec_vp9.h
* \brief The VP9 decoding API
*
* This file contains the \ref api_dec_vp9 "VP9 decoding API".
*/
#ifndef VA_DEC_VP9_H
#define VA_DEC_VP9_H
#ifdef __cplusplus
extern "C" {
#endif
/**
* \defgroup api_dec_vp9 VP9 decoding API
*
* This VP9 decoding API supports 8-bit 420 format only.
*
* @{
*/
/**
* \brief VP9 Decoding Picture Parameter Buffer Structure
*
* This structure conveys picture level parameters.
* App should send a surface with this data structure down to VAAPI once
* per frame.
*
*/
typedef struct _VADecPictureParameterBufferVP9 {
/** \brief picture width
* Picture original resolution. The value may not be multiple of 8.
*/
uint16_t frame_width;
/** \brief picture height
* Picture original resolution. The value may not be multiple of 8.
*/
uint16_t frame_height;
/** \brief Surface indices of reference frames in DPB.
*
* Each entry of the list specifies the surface index of the picture
* that is referred by current picture or will be referred by any future
* picture.
* Application who calls this API should update this list based on the
* refreshing information from VP9 bitstream.
*/
VASurfaceID reference_frames[8];
union {
struct {
/** \brief flags for current picture
* same syntax and semantic as those in VP9 code
*/
uint32_t subsampling_x : 1;
uint32_t subsampling_y : 1;
uint32_t frame_type : 1;
uint32_t show_frame : 1;
uint32_t error_resilient_mode : 1;
uint32_t intra_only : 1;
uint32_t allow_high_precision_mv : 1;
uint32_t mcomp_filter_type : 3;
uint32_t frame_parallel_decoding_mode : 1;
uint32_t reset_frame_context : 2;
uint32_t refresh_frame_context : 1;
uint32_t frame_context_idx : 2;
uint32_t segmentation_enabled : 1;
/** \brief corresponds to variable temporal_update in VP9 code.
*/
uint32_t segmentation_temporal_update : 1;
/** \brief corresponds to variable update_mb_segmentation_map
* in VP9 code.
*/
uint32_t segmentation_update_map : 1;
/** \brief Index of reference_frames[] and points to the
* LAST reference frame.
* It corresponds to active_ref_idx[0] in VP9 code.
*/
uint32_t last_ref_frame : 3;
/** \brief Sign Bias of the LAST reference frame.
* It corresponds to ref_frame_sign_bias[LAST_FRAME] in VP9 code.
*/
uint32_t last_ref_frame_sign_bias : 1;
/** \brief Index of reference_frames[] and points to the
* GOLDERN reference frame.
* It corresponds to active_ref_idx[1] in VP9 code.
*/
uint32_t golden_ref_frame : 3;
/** \brief Sign Bias of the GOLDERN reference frame.
* Corresponds to ref_frame_sign_bias[GOLDERN_FRAME] in VP9 code.
*/
uint32_t golden_ref_frame_sign_bias : 1;
/** \brief Index of reference_frames[] and points to the
* ALTERNATE reference frame.
* Corresponds to active_ref_idx[2] in VP9 code.
*/
uint32_t alt_ref_frame : 3;
/** \brief Sign Bias of the ALTERNATE reference frame.
* Corresponds to ref_frame_sign_bias[ALTREF_FRAME] in VP9 code.
*/
uint32_t alt_ref_frame_sign_bias : 1;
/** \brief Lossless Mode
* LosslessFlag = base_qindex == 0 &&
* y_dc_delta_q == 0 &&
* uv_dc_delta_q == 0 &&
* uv_ac_delta_q == 0;
* Where base_qindex, y_dc_delta_q, uv_dc_delta_q and uv_ac_delta_q
* are all variables in VP9 code.
*/
uint32_t lossless_flag : 1;
} bits;
uint32_t value;
} pic_fields;
/* following parameters have same syntax with those in VP9 code */
uint8_t filter_level;
uint8_t sharpness_level;
/** \brief number of tile rows specified by (1 << log2_tile_rows).
* It corresponds the variable with same name in VP9 code.
*/
uint8_t log2_tile_rows;
/** \brief number of tile columns specified by (1 << log2_tile_columns).
* It corresponds the variable with same name in VP9 code.
*/
uint8_t log2_tile_columns;
/** \brief Number of bytes taken up by the uncompressed frame header,
* which corresponds to byte length of function
* read_uncompressed_header() in VP9 code.
* Specifically, it is the byte count from bit stream buffer start to
* the last byte of uncompressed frame header.
* If there are other meta data in the buffer before uncompressed header,
* its size should be also included here.
*/
uint8_t frame_header_length_in_bytes;
/** \brief The byte count of compressed header the bitstream buffer,
* which corresponds to syntax first_partition_size in code.
*/
uint16_t first_partition_size;
/** These values are segment probabilities with same names in VP9
* function setup_segmentation(). They should be parsed directly from
* bitstream by application.
*/
uint8_t mb_segment_tree_probs[7];
uint8_t segment_pred_probs[3];
/** \brief VP9 Profile definition
* value range [0..3].
*/
uint8_t profile;
/** \brief VP9 bit depth per sample
* same for both luma and chroma samples.
*/
uint8_t bit_depth;
/** \brief Reserved bytes for future use, must be zero */
uint32_t va_reserved[VA_PADDING_MEDIUM];
} VADecPictureParameterBufferVP9;
/**
* \brief VP9 Segmentation Parameter Data Structure
*
* This structure conveys per segment parameters.
* 8 of this data structure will be included in VASegmentationParameterBufferVP9
* and sent to API in a single buffer.
*
*/
typedef struct _VASegmentParameterVP9 {
union {
struct {
/** \brief Indicates if per segment reference frame indicator
* is enabled.
* Corresponding to variable feature_enabled when
* j == SEG_LVL_REF_FRAME in function setup_segmentation() VP9 code.
*/
uint16_t segment_reference_enabled : 1;
/** \brief Specifies per segment reference indication.
* 0: reserved
* 1: Last ref
* 2: golden
* 3: altref
* Value can be derived from variable data when
* j == SEG_LVL_REF_FRAME in function setup_segmentation() VP9 code.
*/
uint16_t segment_reference : 2;
/** \brief Indicates if per segment skip feature is enabled.
* Corresponding to variable feature_enabled when
* j == SEG_LVL_SKIP in function setup_segmentation() VP9 code.
*/
uint16_t segment_reference_skipped : 1;
} fields;
uint16_t value;
} segment_flags;
/** \brief Specifies the filter level information per segment.
* The value corresponds to variable lfi->lvl[seg][ref][mode] in VP9 code,
* where m is [ref], and n is [mode] in FilterLevel[m][n].
*/
uint8_t filter_level[4][2];
/** \brief Specifies per segment Luma AC quantization scale.
* Corresponding to y_dequant[qindex][1] in vp9_mb_init_quantizer()
* function of VP9 code.
*/
int16_t luma_ac_quant_scale;
/** \brief Specifies per segment Luma DC quantization scale.
* Corresponding to y_dequant[qindex][0] in vp9_mb_init_quantizer()
* function of VP9 code.
*/
int16_t luma_dc_quant_scale;
/** \brief Specifies per segment Chroma AC quantization scale.
* Corresponding to uv_dequant[qindex][1] in vp9_mb_init_quantizer()
* function of VP9 code.
*/
int16_t chroma_ac_quant_scale;
/** \brief Specifies per segment Chroma DC quantization scale.
* Corresponding to uv_dequant[qindex][0] in vp9_mb_init_quantizer()
* function of VP9 code.
*/
int16_t chroma_dc_quant_scale;
/** \brief Reserved bytes for future use, must be zero */
uint32_t va_reserved[VA_PADDING_LOW];
} VASegmentParameterVP9;
/**
* \brief VP9 Slice Parameter Buffer Structure
*
* This structure conveys parameters related to segmentation data and should be
* sent once per frame.
*
* When segmentation is disabled, only SegParam[0] has valid values,
* all other entries should be populated with 0.
* Otherwise, all eight entries should be valid.
*
* Slice data buffer of VASliceDataBufferType is used
* to send the bitstream which should include whole or part of partition 0
* (at least compressed header) to the end of frame.
*
*/
typedef struct _VASliceParameterBufferVP9 {
/** \brief The byte count of current frame in the bitstream buffer,
* starting from first byte of the buffer.
* It uses the name slice_data_size to be consitent with other codec,
* but actually means frame_data_size.
*/
uint32_t slice_data_size;
/**
* offset to the first byte of partition data (control partition)
*/
uint32_t slice_data_offset;
/**
* see VA_SLICE_DATA_FLAG_XXX definitions
*/
uint32_t slice_data_flag;
/**
* \brief per segment information
*/
VASegmentParameterVP9 seg_param[8];
/** \brief Reserved bytes for future use, must be zero */
uint32_t va_reserved[VA_PADDING_LOW];
} VASliceParameterBufferVP9;
/**@}*/
#ifdef __cplusplus
}
#endif
#endif /* VA_DEC_VP9_H */