summaryrefslogtreecommitdiffstats
path: root/media/mozva/va/va_dec_vp9.h
blob: 17ab2a71a6142f29d4d7d20dd9cd74daa9aa603f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
/*
 * 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 */