third_party/libva/va/va_dec_hevc.h

   1 /*
   2  * Copyright (c) 2014 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_hevc.h
  27  * \brief The HEVC decoding API
  28  *
  29  * This file contains the \ref api_dec_hevc "HEVC decoding API".
  30  */
  31
  32 #ifndef VA_DEC_HEVC_H
  33 #define VA_DEC_HEVC_H
  34
  35 #include <stdint.h>
  36
  37 #ifdef __cplusplus
  38 extern "C" {
  39 #endif
  40
  41 /**
  42  * \defgroup api_dec_hevc HEVC decoding API
  43  *
  44  * This HEVC decoding API supports Main and Main Still Picture profiles.
  45  * And it supports both short slice format and long slice format.
  46  *
  47  * @{
  48  */
  49
  50 /**
  51  * \brief HEVC Decoding Picture Parameter Buffer Structure
  52  *
  53  * This structure conveys picture level parameters and should be sent once
  54  * per frame.
  55  *
  56  */
  57 typedef struct  _VAPictureParameterBufferHEVC
  58 {
  59     /** \brief buffer description of decoded current picture
  60      * only VA_PICTURE_HEVC_FIELD_PIC and VA_PICTURE_HEVC_BOTTOM_FIELD
  61      * of "flags" fields are meaningful.
  62      */
  63     VAPictureHEVC           CurrPic;
  64     /** \brief buffer description of reference frames in DPB */
  65     VAPictureHEVC           ReferenceFrames[15];
  66     /** \brief picture width, shall be integer multiple of minimum CB size. */
  67     uint16_t                pic_width_in_luma_samples;
  68     /** \brief picture height, shall be integer multiple of minimum CB size. */
  69     uint16_t                pic_height_in_luma_samples;
  70
  71
  72     union
  73     {
  74         struct
  75         {
  76         /** following flags have same syntax and semantic as those in HEVC spec */
  77             uint32_t        chroma_format_idc                           : 2;
  78             uint32_t        separate_colour_plane_flag                  : 1;
  79             uint32_t        pcm_enabled_flag                            : 1;
  80             uint32_t        scaling_list_enabled_flag                   : 1;
  81             uint32_t        transform_skip_enabled_flag                 : 1;
  82             uint32_t        amp_enabled_flag                            : 1;
  83             uint32_t        strong_intra_smoothing_enabled_flag         : 1;
  84             uint32_t        sign_data_hiding_enabled_flag               : 1;
  85             uint32_t        constrained_intra_pred_flag                 : 1;
  86             uint32_t        cu_qp_delta_enabled_flag                    : 1;
  87             uint32_t        weighted_pred_flag                          : 1;
  88             uint32_t        weighted_bipred_flag                        : 1;
  89             uint32_t        transquant_bypass_enabled_flag              : 1;
  90             uint32_t        tiles_enabled_flag                          : 1;
  91             uint32_t        entropy_coding_sync_enabled_flag            : 1;
  92             uint32_t        pps_loop_filter_across_slices_enabled_flag  : 1;
  93             uint32_t        loop_filter_across_tiles_enabled_flag       : 1;
  94             uint32_t        pcm_loop_filter_disabled_flag               : 1;
  95             /** set based on sps_max_num_reorder_pics of current temporal layer. */
  96             uint32_t        NoPicReorderingFlag                         : 1;
  97             /** picture has no B slices */
  98             uint32_t        NoBiPredFlag                                : 1;
  99
 100             uint32_t        ReservedBits                                : 11;
 101         } bits;
 102         uint32_t            value;
 103     } pic_fields;
 104
 105     /** following parameters have same syntax with those in HEVC spec */
 106     /** \brief DPB size for current temporal layer */
 107     uint8_t                 sps_max_dec_pic_buffering_minus1;
 108     uint8_t                 bit_depth_luma_minus8;
 109     uint8_t                 bit_depth_chroma_minus8;
 110     uint8_t                 pcm_sample_bit_depth_luma_minus1;
 111     uint8_t                 pcm_sample_bit_depth_chroma_minus1;
 112     uint8_t                 log2_min_luma_coding_block_size_minus3;
 113     uint8_t                 log2_diff_max_min_luma_coding_block_size;
 114     uint8_t                 log2_min_transform_block_size_minus2;
 115     uint8_t                 log2_diff_max_min_transform_block_size;
 116     uint8_t                 log2_min_pcm_luma_coding_block_size_minus3;
 117     uint8_t                 log2_diff_max_min_pcm_luma_coding_block_size;
 118     uint8_t                 max_transform_hierarchy_depth_intra;
 119     uint8_t                 max_transform_hierarchy_depth_inter;
 120     int8_t                  init_qp_minus26;
 121     uint8_t                 diff_cu_qp_delta_depth;
 122     int8_t                  pps_cb_qp_offset;
 123     int8_t                  pps_cr_qp_offset;
 124     uint8_t                 log2_parallel_merge_level_minus2;
 125     uint8_t                 num_tile_columns_minus1;
 126     uint8_t                 num_tile_rows_minus1;
 127     /**
 128      * when uniform_spacing_flag equals 1, application should populate
 129      * column_width_minus[], and row_height_minus1[] with approperiate values.
 130      */
 131     uint16_t                column_width_minus1[19];
 132     uint16_t                row_height_minus1[21];
 133
 134     /**
 135      *  The Following Parameters are needed for Short Slice Format Only.
 136      *  Only format decoding can ignore them.
 137      */
 138
 139     /**
 140      * \brief Parameters needed for parsing slice segment headers
 141      */
 142     union
 143     {
 144         struct
 145         {
 146             /** following parameters have same syntax with those in HEVC spec */
 147             uint32_t        lists_modification_present_flag             : 1;
 148             uint32_t        long_term_ref_pics_present_flag             : 1;
 149             uint32_t        sps_temporal_mvp_enabled_flag               : 1;
 150             uint32_t        cabac_init_present_flag                     : 1;
 151             uint32_t        output_flag_present_flag                    : 1;
 152             uint32_t        dependent_slice_segments_enabled_flag       : 1;
 153             uint32_t        pps_slice_chroma_qp_offsets_present_flag    : 1;
 154             uint32_t        sample_adaptive_offset_enabled_flag         : 1;
 155             uint32_t        deblocking_filter_override_enabled_flag     : 1;
 156             uint32_t        pps_disable_deblocking_filter_flag          : 1;
 157             uint32_t        slice_segment_header_extension_present_flag : 1;
 158
 159             /** current picture with NUT between 16 and 21 inclusive */
 160             uint32_t        RapPicFlag                                  : 1;
 161             /** current picture with NUT between 19 and 20 inclusive */
 162             uint32_t        IdrPicFlag                                  : 1;
 163             /** current picture has only intra slices */
 164             uint32_t        IntraPicFlag                                : 1;
 165
 166             uint32_t        ReservedBits                                : 18;
 167         } bits;
 168         uint32_t            value;
 169     } slice_parsing_fields;
 170
 171     /** following parameters have same syntax with those in HEVC spec */
 172     uint8_t                 log2_max_pic_order_cnt_lsb_minus4;
 173     uint8_t                 num_short_term_ref_pic_sets;
 174     uint8_t                 num_long_term_ref_pic_sps;
 175     uint8_t                 num_ref_idx_l0_default_active_minus1;
 176     uint8_t                 num_ref_idx_l1_default_active_minus1;
 177     int8_t                  pps_beta_offset_div2;
 178     int8_t                  pps_tc_offset_div2;
 179     uint8_t                 num_extra_slice_header_bits;
 180
 181     /**
 182      * \brief number of bits that structure
 183      * short_term_ref_pic_set( num_short_term_ref_pic_sets ) takes in slice
 184      * segment header when short_term_ref_pic_set_sps_flag equals 0.
 185      * if short_term_ref_pic_set_sps_flag equals 1, the value should be 0.
 186      * the bit count is calculated after emulation prevention bytes are removed
 187      * from bit streams.
 188      * This variable is used for accelorater to skip parsing the
 189      * short_term_ref_pic_set( num_short_term_ref_pic_sets ) structure.
 190      */
 191     uint32_t                st_rps_bits;
 192
 193 } VAPictureParameterBufferHEVC;
 194
 195
 196
 197 /**
 198  * \brief HEVC Slice Parameter Buffer Structure For Short Format
 199  *
 200  * VASliceParameterBufferBaseHEVC structure should be accompanied by a
 201  * slice data buffer, which holds the whole raw slice NAL unit bit streams
 202  * including start code prefix and emulation prevention bytes not removed.
 203  *
 204  * This structure conveys parameters related to slice segment header and should
 205  * be sent once per slice.
 206  *
 207  * For long format, this data structure is not sent by application.
 208  *
 209  */
 210 typedef struct  _VASliceParameterBufferBaseHEVC
 211 {
 212     /** @name Codec-independent Slice Parameter Buffer base. */
 213
 214     /**@{*/
 215
 216     /** \brief Number of bytes in the slice data buffer for this slice
 217      *  counting from and including NAL unit header.
 218      */
 219     uint32_t                slice_data_size;
 220     /** \brief The offset to the NAL unit header for this slice */
 221     uint32_t                slice_data_offset;
 222     /** \brief Slice data buffer flags. See \c VA_SLICE_DATA_FLAG_XXX. */
 223     uint16_t                slice_data_flag;
 224     /**@}*/
 225
 226 } VASliceParameterBufferBaseHEVC;
 227
 228
 229
 230
 231 /**
 232  * \brief HEVC Slice Parameter Buffer Structure For Long Format
 233  *
 234  * VASliceParameterBufferHEVC structure should be accompanied by a
 235  * slice data buffer, which holds the whole raw slice NAL unit bit streams
 236  * including start code prefix and emulation prevention bytes not removed.
 237  *
 238  * This structure conveys parameters related to slice segment header and should
 239  * be sent once per slice.
 240  *
 241  * For short format, this data structure is not sent by application.
 242  *
 243  */
 244 typedef struct  _VASliceParameterBufferHEVC
 245 {
 246     /** @name Codec-independent Slice Parameter Buffer base. */
 247
 248     /**@{*/
 249
 250     /** \brief Number of bytes in the slice data buffer for this slice
 251      * counting from and including NAL unit header.
 252      */
 253     uint32_t                slice_data_size;
 254     /** \brief The offset to the NAL unit header for this slice */
 255     uint32_t                slice_data_offset;
 256     /** \brief Slice data buffer flags. See \c VA_SLICE_DATA_FLAG_XXX. */
 257     uint16_t                slice_data_flag;
 258     /**
 259      * \brief Byte offset from NAL unit header to the begining of slice_data().
 260      *
 261      * This byte offset is relative to and includes the NAL unit header
 262      * and represents the number of bytes parsed in the slice_header()
 263      * after the removal of any emulation prevention bytes in
 264      * there. However, the slice data buffer passed to the hardware is
 265      * the original bitstream, thus including any emulation prevention
 266      * bytes.
 267      */
 268     uint32_t                slice_data_byte_offset;
 269     /** HEVC syntax element. */
 270     uint32_t                slice_segment_address;
 271     /** \brief index into ReferenceFrames[]
 272      * RefPicList[0][] corresponds to RefPicList0[] of HEVC variable.
 273      * RefPicList[1][] corresponds to RefPicList1[] of HEVC variable.
 274      * value range [0..14, 0xFF], where 0xFF indicates invalid entry.
 275      */
 276     uint8_t                 RefPicList[2][15];
 277     union
 278     {
 279         uint32_t            value;
 280         struct
 281         {
 282             /** current slice is last slice of picture. */
 283             uint32_t        LastSliceOfPic                              : 1;
 284     /** HEVC syntax element. */
 285             uint32_t        dependent_slice_segment_flag                : 1;
 286     /** HEVC syntax element. */
 287             uint32_t        slice_type                                  : 2;
 288     /** HEVC syntax element. */
 289             uint32_t        color_plane_id                              : 2;
 290     /** HEVC syntax element. */
 291             uint32_t        slice_sao_luma_flag                         : 1;
 292     /** HEVC syntax element. */
 293             uint32_t        slice_sao_chroma_flag                       : 1;
 294     /** HEVC syntax element. */
 295             uint32_t        mvd_l1_zero_flag                            : 1;
 296     /** HEVC syntax element. */
 297             uint32_t        cabac_init_flag                             : 1;
 298     /** HEVC syntax element. */
 299             uint32_t        slice_temporal_mvp_enabled_flag             : 1;
 300     /** HEVC syntax element. */
 301             uint32_t        slice_deblocking_filter_disabled_flag       : 1;
 302     /** HEVC syntax element. */
 303             uint32_t        collocated_from_l0_flag                     : 1;
 304     /** HEVC syntax element. */
 305             uint32_t        slice_loop_filter_across_slices_enabled_flag : 1;
 306             uint32_t        reserved                                    : 18;
 307         } fields;
 308     } LongSliceFlags;
 309
 310     /** HEVC syntax element. Collocated Reference Picture Index.
 311      * index to RefPicList[0][] or RefPicList[1][].
 312      * when slice_temporal_mvp_enabled_flag equals 0, it should take value 0xFF.
 313      * value range [0..14, 0xFF].
 314      */
 315     uint8_t                 collocated_ref_idx;
 316     /** HEVC syntax element.
 317      * if num_ref_idx_active_override_flag equals 0, host decoder should
 318      * set its value to num_ref_idx_l0_default_minus1.
 319      */
 320     uint8_t                 num_ref_idx_l0_active_minus1;
 321     /** HEVC syntax element.
 322      * if num_ref_idx_active_override_flag equals 0, host decoder should
 323      * set its value to num_ref_idx_l1_default_minus1.
 324      */
 325     uint8_t                 num_ref_idx_l1_active_minus1;
 326     /** HEVC syntax element. */
 327     int8_t                  slice_qp_delta;
 328     /** HEVC syntax element. */
 329     int8_t                  slice_cb_qp_offset;
 330     /** HEVC syntax element. */
 331     int8_t                  slice_cr_qp_offset;
 332     /** HEVC syntax element. */
 333     int8_t                  slice_beta_offset_div2;
 334     /** HEVC syntax element. */
 335     int8_t                  slice_tc_offset_div2;
 336     /** HEVC syntax element. */
 337     uint8_t                 luma_log2_weight_denom;
 338     /** HEVC syntax element. */
 339     int8_t                  delta_chroma_log2_weight_denom;
 340     /** HEVC syntax element. */
 341     int8_t                  delta_luma_weight_l0[15];
 342     /** HEVC syntax element. */
 343     int8_t                  luma_offset_l0[15];
 344     /** HEVC syntax element. */
 345     int8_t                  delta_chroma_weight_l0[15][2];
 346     /** corresponds to HEVC spec variable of the same name. */
 347     int8_t                  ChromaOffsetL0[15][2];
 348     /** HEVC syntax element. */
 349     int8_t                  delta_luma_weight_l1[15];
 350     /** HEVC syntax element. */
 351     int8_t                  luma_offset_l1[15];
 352     /** HEVC syntax element. */
 353     int8_t                  delta_chroma_weight_l1[15][2];
 354     /** corresponds to HEVC spec variable of the same name. */
 355     int8_t                  ChromaOffsetL1[15][2];
 356     /** HEVC syntax element. */
 357     uint8_t                 five_minus_max_num_merge_cand;
 358     /**@}*/
 359
 360 } VASliceParameterBufferHEVC;
 361
 362
 363
 364 /**
 365  * \brief HEVC Inverse Quantization Matrix Buffer Structure
 366  *
 367  * This structure is sent once per frame,
 368  * and only when scaling_list_enabled_flag = 1.
 369  * When sps_scaling_list_data_present_flag = 0, app still
 370  * needs to send in this structure with default matrix values.
 371  *
 372  * Matrix entries are in raster scan order which follows HEVC spec.
 373  */
 374 typedef struct _VAIQMatrixBufferHEVC
 375 {
 376     /**
 377      * \brief scaling lists,
 378      * corresponds to same HEVC spec syntax element
 379      * ScalingList[ i ][ MatrixID ][ j ].
 380      *
 381      * \brief 4x4 scaling,
 382      * correspongs i = 0, MatrixID is in the range of 0 to 5,
 383      * inclusive. And j is in the range of 0 to 15, inclusive.
 384      */
 385     uint8_t                 ScalingList4x4[6][16];
 386     /**
 387      * \brief 8x8 scaling,
 388      * correspongs i = 1, MatrixID is in the range of 0 to 5,
 389      * inclusive. And j is in the range of 0 to 63, inclusive.
 390      */
 391     uint8_t                 ScalingList8x8[6][64];
 392     /**
 393      * \brief 16x16 scaling,
 394      * correspongs i = 2, MatrixID is in the range of 0 to 5,
 395      * inclusive. And j is in the range of 0 to 63, inclusive.
 396      */
 397     uint8_t                 ScalingList16x16[6][64];
 398     /**
 399      * \brief 32x32 scaling,
 400      * correspongs i = 3, MatrixID is in the range of 0 to 1,
 401      * inclusive. And j is in the range of 0 to 63, inclusive.
 402      */
 403     uint8_t                 ScalingList32x32[2][64];
 404     /**
 405      * \brief DC values of the 16x16 scaling lists,
 406      * corresponds to HEVC spec syntax
 407      * scaling_list_dc_coef_minus8[ sizeID - 2 ][ matrixID ] + 8
 408      * with sizeID = 2 and matrixID in the range of 0 to 5, inclusive.
 409      */
 410     uint8_t                 ScalingListDC16x16[6];
 411     /**
 412      * \brief DC values of the 32x32 scaling lists,
 413      * corresponds to HEVC spec syntax
 414      * scaling_list_dc_coef_minus8[ sizeID - 2 ][ matrixID ] + 8
 415      * with sizeID = 3 and matrixID in the range of 0 to 1, inclusive.
 416      */
 417     uint8_t                 ScalingListDC32x32[2];
 418 } VAIQMatrixBufferHEVC;
 419
 420
 421 /**@}*/
 422
 423 #ifdef __cplusplus
 424 }
 425 #endif
 426
 427 #endif /* VA_DEC_HEVC_H */