third_party/libva/va/va_dec_vp8.h

   1 /*
   2  * Copyright (c) 2007-2012 Intel Corporation. All Rights Reserved.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the
   6  * "Software"), to deal in the Software without restriction, including
   7  * without limitation the rights to use, copy, modify, merge, publish,
   8  * distribute, sub license, and/or sell copies of the Software, and to
   9  * permit persons to whom the Software is furnished to do so, subject to
  10  * the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the
  13  * next paragraph) shall be included in all copies or substantial portions
  14  * of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  17  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  18  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  19  * IN NO EVENT SHALL INTEL AND/OR ITS SUPPLIERS BE LIABLE FOR
  20  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  21  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  22  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  23  */
  24
  25 /**
  26  * \file va_dec_vp.h
  27  * \brief VP8 decoding API
  28  *
  29  * This file contains the \ref api_dec_vp8 "VP8 decoding API".
  30  */
  31
  32 #ifndef VA_DEC_VP8_H
  33 #define VA_DEC_VP8_H
  34
  35 #ifdef __cplusplus
  36 extern "C" {
  37 #endif
  38
  39 /**
  40  * \defgroup api_dec_vp8 VP8 decoding API
  41  *
  42  * @{
  43  */
  44
  45 /**
  46  * \brief VPX Bool Coder Context structure
  47  *
  48  * This common structure is defined for potential sharing by other VP formats
  49  *
  50  */
  51 typedef struct _VABoolCoderContextVPX
  52 {
  53     /* partition 0 "range" */
  54     unsigned char range;
  55     /* partition 0 "value" */
  56     unsigned char value;
  57     /*
  58      * 'partition 0 number of shifts before an output byte is available'
  59      * it is the number of remaining bits in 'value' for decoding, range [0, 7].
  60      */
  61
  62     unsigned char count;
  63 } VABoolCoderContextVPX;
  64
  65 /**
  66  * \brief VP8 Decoding Picture Parameter Buffer Structure
  67  *
  68  * This structure conveys frame level parameters and should be sent once
  69  * per frame.
  70  *
  71  */
  72 typedef struct  _VAPictureParameterBufferVP8
  73 {
  74     /* frame width in pixels */
  75     unsigned int frame_width;
  76     /* frame height in pixels */
  77     unsigned int frame_height;
  78
  79     /* specifies the "last" reference frame */
  80     VASurfaceID last_ref_frame;
  81     /* specifies the "golden" reference frame */
  82     VASurfaceID golden_ref_frame;
  83     /* specifies the "alternate" referrence frame */
  84     VASurfaceID alt_ref_frame;
  85     /* specifies the out-of-loop deblocked frame, not used currently */
  86     VASurfaceID out_of_loop_frame;
  87
  88     union {
  89         struct {
  90             /* same as key_frame in bitstream syntax, 0 means a key frame */
  91             unsigned int key_frame                      : 1;
  92             /* same as version in bitstream syntax */
  93             unsigned int version                        : 3;
  94             /* same as segmentation_enabled in bitstream syntax */
  95             unsigned int segmentation_enabled           : 1;
  96             /* same as update_mb_segmentation_map in bitstream syntax */
  97             unsigned int update_mb_segmentation_map     : 1;
  98             /* same as update_segment_feature_data in bitstream syntax */
  99             unsigned int update_segment_feature_data    : 1;
 100             /* same as filter_type in bitstream syntax */
 101             unsigned int filter_type                    : 1;
 102             /* same as sharpness_level in bitstream syntax */
 103             unsigned int sharpness_level                : 3;
 104             /* same as loop_filter_adj_enable in bitstream syntax */
 105             unsigned int loop_filter_adj_enable         : 1;
 106             /* same as mode_ref_lf_delta_update in bitstream syntax */
 107             unsigned int mode_ref_lf_delta_update       : 1;
 108             /* same as sign_bias_golden in bitstream syntax */
 109             unsigned int sign_bias_golden               : 1;
 110             /* same as sign_bias_alternate in bitstream syntax */
 111             unsigned int sign_bias_alternate            : 1;
 112             /* same as mb_no_coeff_skip in bitstream syntax */
 113             unsigned int mb_no_coeff_skip               : 1;
 114             /* flag to indicate that loop filter should be disabled */
 115             unsigned int loop_filter_disable            : 1;
 116         } bits;
 117         unsigned int value;
 118     } pic_fields;
 119
 120     /*
 121      * probabilities of the segment_id decoding tree and same as
 122      * mb_segment_tree_probs in the spec.
 123      */
 124     unsigned char mb_segment_tree_probs[3];
 125
 126     /* Post-adjustment loop filter levels for the 4 segments */
 127     unsigned char loop_filter_level[4];
 128     /* loop filter deltas for reference frame based MB level adjustment */
 129     char loop_filter_deltas_ref_frame[4];
 130     /* loop filter deltas for coding mode based MB level adjustment */
 131     char loop_filter_deltas_mode[4];
 132
 133     /* same as prob_skip_false in bitstream syntax */
 134     unsigned char prob_skip_false;
 135     /* same as prob_intra in bitstream syntax */
 136     unsigned char prob_intra;
 137     /* same as prob_last in bitstream syntax */
 138     unsigned char prob_last;
 139     /* same as prob_gf in bitstream syntax */
 140     unsigned char prob_gf;
 141
 142     /*
 143      * list of 4 probabilities of the luma intra prediction mode decoding
 144      * tree and same as y_mode_probs in frame header
 145      */
 146     unsigned char y_mode_probs[4];
 147     /*
 148      * list of 3 probabilities of the chroma intra prediction mode decoding
 149      * tree and same as uv_mode_probs in frame header
 150      */
 151     unsigned char uv_mode_probs[3];
 152     /*
 153      * updated mv decoding probabilities and same as mv_probs in
 154      * frame header
 155      */
 156     unsigned char mv_probs[2][19];
 157
 158     VABoolCoderContextVPX bool_coder_ctx;
 159
 160 } VAPictureParameterBufferVP8;
 161
 162 /**
 163  * \brief VP8 Slice Parameter Buffer Structure
 164  *
 165  * This structure conveys parameters related to data partitions and should be
 166  * sent once per frame. Slice data buffer of VASliceDataBufferType is used
 167  * to send the partition data.
 168  *
 169  */
 170 typedef struct  _VASliceParameterBufferVP8
 171 {
 172     /*
 173      * number of bytes in the slice data buffer for the partitions
 174      */
 175     unsigned int slice_data_size;
 176     /*
 177      * offset to the first byte of partition data (control partition)
 178      */
 179     unsigned int slice_data_offset;
 180     /*
 181      * see VA_SLICE_DATA_FLAG_XXX definitions
 182      */
 183     unsigned int slice_data_flag;
 184     /*
 185      * offset to the first bit of MB from the first byte of partition data(slice_data_offset)
 186      */
 187     unsigned int macroblock_offset;
 188
 189     /*
 190      * Partitions
 191      * (1<<log2_nbr_of_dct_partitions)+1, count both control partition (frame header) and toke partition
 192      */
 193     unsigned char num_of_partitions;
 194     /*
 195      * partition_size[0] is remaining bytes of control partition after parsed by application.
 196      * exclude current byte for the remaining bits in bool_coder_ctx.
 197      * exclude the uncompress data chunk since first_part_size 'excluding the uncompressed data chunk'
 198      */
 199     unsigned int partition_size[9];
 200 } VASliceParameterBufferVP8;
 201
 202 /**
 203  * \brief VP8 Coefficient Probability Data Buffer Structure
 204  *
 205  * Contains the contents of the token probability table, which may be
 206  * incrementally modified in the frame header. There are four dimensions to
 207  * the token probability array. The outermost dimension is indexed by the
 208  * type of plane being decoded; the next dimension is selected by the
 209  * position of the coefficient being decoded; the third dimension, * roughly
 210  * speaking, measures the "local complexity" or extent to which nearby
 211  * coefficients are non-zero; the fourth, and final, dimension of the token
 212  * probability array is indexed by the position in the token tree structure,
 213  * as are all tree probability arrays. This structure is sent once per frame.
 214  *
 215  */
 216 typedef struct _VAProbabilityDataBufferVP8
 217 {
 218     unsigned char dct_coeff_probs[4][8][3][11];
 219 } VAProbabilityDataBufferVP8;
 220
 221 /**
 222  * \brief VP8 Inverse Quantization Matrix Buffer Structure
 223  *
 224  * Contains quantization indices for yac(0),ydc(1),y2dc(2),y2ac(3),uvdc(4),
 225  * uvac(5) for each segment (0-3). When segmentation is disabled, only
 226  * quantization_index[0][] will be used. This structure is sent once per frame.
 227  */
 228 typedef struct _VAIQMatrixBufferVP8
 229 {
 230     /*
 231      * array first dimensional is segment and 2nd dimensional is Q index
 232      * all Q indexs should be clipped to be range [0, 127]
 233      */
 234     unsigned short quantization_index[4][6];
 235 } VAIQMatrixBufferVP8;
 236
 237 /**@}*/
 238
 239 #ifdef __cplusplus
 240 }
 241 #endif
 242
 243 #endif /* VA_DEC_VP8_H */