_RocdecAV1PicParams Struct Reference#
Data Fields | |
| uint8_t | profile |
| sequence level information More... | |
| uint8_t | order_hint_bits_minus_1 |
| uint8_t | bit_depth_idx |
| bit depth index value range [0..2] 0 - bit depth 8; 1 - bit depth 10; 2 - bit depth 12; | |
| uint8_t | matrix_coefficients |
| corresponds to AV1 spec variable of the same name. | |
| union { | |
| struct { | |
| uint32_t still_picture: 1 | |
| uint32_t use_128x128_superblock: 1 | |
| uint32_t enable_filter_intra: 1 | |
| uint32_t enable_intra_edge_filter: 1 | |
| uint32_t enable_interintra_compound: 1 | |
| uint32_t enable_masked_compound: 1 | |
| uint32_t enable_dual_filter: 1 | |
| uint32_t enable_order_hint: 1 | |
| uint32_t enable_jnt_comp: 1 | |
| uint32_t enable_cdef: 1 | |
| uint32_t mono_chrome: 1 | |
| uint32_t color_range: 1 | |
| uint32_t subsampling_x: 1 | |
| uint32_t subsampling_y: 1 | |
| uint32_t chroma_sample_position: 1 | |
| uint32_t film_grain_params_present: 1 | |
| uint32_t reserved: 16 | |
| Reserved bytes for future use, must be zero. | |
| } fields | |
| uint32_t value | |
| } | seq_info_fields |
| int | current_frame |
| Picture level information. More... | |
| int | current_display_picture |
| display buffer of current picture Used for film grain applied decoded picture. Valid only when apply_grain equals 1. | |
| uint8_t | anchor_frames_num |
| number of anchor frames for large scale tile This parameter gives the number of entries of anchor_frames_list[]. Value range [0..128]. | |
| int * | anchor_frames_list |
| anchor frame list for large scale tile For large scale tile applications, the anchor frames could come from previously decoded frames in current sequence (aka. internal), or from external sources. For external anchor frames, application should call API vaCreateBuffer() to generate frame buffers and populate them with pixel frames. And this process may happen multiple times. The array anchor_frames_list[] is used to register all the available anchor frames from both external and internal, up to the current frame instance. If a previously registerred anchor frame is no longer needed, it should be removed from the list. But it does not prevent applications from relacing the frame buffer with new anchor frames. Please note that the internal anchor frames may not still be present in the current DPB buffer. But if it is in the anchor_frames_list[], it should not be replaced with other frames or removed from memory until it is not shown in the list. This number of entries of the list is given by parameter anchor_frames_num. | |
| uint16_t | frame_width_minus1 |
| Picture resolution minus 1 Picture original resolution. If SuperRes is enabled, this is the upscaled resolution. value range [0..65535]. | |
| uint16_t | frame_height_minus1 |
| uint16_t | output_frame_width_in_tiles_minus_1 |
| Output frame buffer size in unit of tiles Valid only when large_scale_tile equals 1. value range [0..65535]. | |
| uint16_t | output_frame_height_in_tiles_minus_1 |
| int | ref_frame_map [8] |
| Surface indices of reference frames in DPB. More... | |
| uint8_t | ref_frame_idx [7] |
| Reference frame indices. More... | |
| uint8_t | primary_ref_frame |
| primary reference frame index Index into ref_frame_idx[], specifying which reference frame contains propagated info that should be loaded at the start of the frame. When value equals PRIMARY_REF_NONE (7), it indicates there is no primary reference frame. value range [0..7] | |
| uint8_t | order_hint |
| RocdecAv1SegmentationStruct | seg_info |
| RocdecAv1FilmGrainStruct | film_grain_info |
| uint8_t | tile_cols |
| tile structure When uniform_tile_spacing_flag == 1, width_in_sbs_minus_1[] and height_in_sbs_minus_1[] should be ignored, which will be generated by driver based on tile_cols and tile_rows. | |
| uint8_t | tile_rows |
| uint16_t | width_in_sbs_minus_1 [63] |
| uint16_t | height_in_sbs_minus_1 [63] |
| uint16_t | tile_count_minus_1 |
| number of tiles minus 1 in large scale tile list Same as AV1 semantic element. Valid only when large_scale_tiles == 1. | |
| uint16_t | context_update_tile_id |
| union { | |
| struct { | |
| uint32_t frame_type: 2 | |
| flags for current picture same syntax and semantic as those in AV1 code More... | |
| uint32_t show_frame: 1 | |
| uint32_t showable_frame: 1 | |
| uint32_t error_resilient_mode: 1 | |
| uint32_t disable_cdf_update: 1 | |
| uint32_t allow_screen_content_tools: 1 | |
| uint32_t force_integer_mv: 1 | |
| uint32_t allow_intrabc: 1 | |
| uint32_t use_superres: 1 | |
| uint32_t allow_high_precision_mv: 1 | |
| uint32_t is_motion_mode_switchable: 1 | |
| uint32_t use_ref_frame_mvs: 1 | |
| uint32_t disable_frame_end_update_cdf: 1 | |
| uint32_t uniform_tile_spacing_flag: 1 | |
| uint32_t allow_warped_motion: 1 | |
| uint32_t large_scale_tile: 1 | |
| indicate if current frame in large scale tile mode | |
| uint32_t reserved: 15 | |
| Reserved bytes for future use, must be zero. | |
| } bits | |
| uint32_t value | |
| } | pic_info_fields |
| uint8_t | superres_scale_denominator |
| Supper resolution scale denominator. When use_superres=1, superres_scale_denominator must be in the range [9..16]. When use_superres=0, superres_scale_denominator must be 8. | |
| uint8_t | interp_filter |
| Interpolation filter. value range [0..4]. | |
| uint8_t | filter_level [2] |
| luma loop filter levels. value range [0..63]. | |
| uint8_t | filter_level_u |
| chroma loop filter levels. value range [0..63]. | |
| uint8_t | filter_level_v |
| union { | |
| struct { | |
| uint8_t sharpness_level: 3 | |
| flags for reference pictures same syntax and semantic as those in AV1 code | |
| uint8_t mode_ref_delta_enabled: 1 | |
| uint8_t mode_ref_delta_update: 1 | |
| uint8_t reserved: 3 | |
| Reserved bytes for future use, must be zero. | |
| } bits | |
| uint8_t value | |
| } | loop_filter_info_fields |
| int8_t | ref_deltas [8] |
| The adjustment needed for the filter level based on the chosen reference frame. value range [-64..63]. | |
| int8_t | mode_deltas [2] |
| The adjustment needed for the filter level based on the chosen mode. value range [-64..63]. | |
| uint8_t | base_qindex |
| quantization More... | |
| int8_t | y_dc_delta_q |
| Y DC delta from Y AC value range [-64..63]. | |
| int8_t | u_dc_delta_q |
| U DC delta from Y AC value range [-64..63]. | |
| int8_t | u_ac_delta_q |
| U AC delta from Y AC value range [-64..63]. | |
| int8_t | v_dc_delta_q |
| V DC delta from Y AC value range [-64..63]. | |
| int8_t | v_ac_delta_q |
| V AC delta from Y AC value range [-64..63]. | |
| union { | |
| struct { | |
| uint16_t using_qmatrix: 1 | |
| uint16_t qm_y: 4 | |
| qm level value range [0..15] Invalid if using_qmatrix equals 0. | |
| uint16_t qm_u: 4 | |
| uint16_t qm_v: 4 | |
| uint16_t reserved: 3 | |
| Reserved bytes for future use, must be zero. | |
| } bits | |
| uint16_t value | |
| } | qmatrix_fields |
| quantization_matrix | |
| union { | |
| struct { | |
| uint32_t delta_q_present_flag: 1 | |
| delta_q parameters | |
| uint32_t log2_delta_q_res: 2 | |
| uint32_t delta_lf_present_flag: 1 | |
| delta_lf parameters | |
| uint32_t log2_delta_lf_res: 2 | |
| uint32_t delta_lf_multi: 1 | |
| CONFIG_LOOPFILTER_LEVEL. | |
| uint32_t tx_mode: 2 | |
| read_tx_mode value range [0..2] | |
| uint32_t reference_select: 1 | |
| uint32_t reduced_tx_set_used: 1 | |
| uint32_t skip_mode_present: 1 | |
| uint32_t reserved: 20 | |
| Reserved bytes for future use, must be zero. | |
| } bits | |
| uint32_t value | |
| } | mode_control_fields |
| uint8_t | cdef_damping_minus_3 |
| CDEF parameters. | |
| uint8_t | cdef_bits |
| uint8_t | cdef_y_strengths [8] |
| uint8_t | cdef_uv_strengths [8] |
| union { | |
| struct { | |
| uint16_t yframe_restoration_type: 2 | |
| uint16_t cbframe_restoration_type: 2 | |
| uint16_t crframe_restoration_type: 2 | |
| uint16_t lr_unit_shift: 2 | |
| uint16_t lr_uv_shift: 1 | |
| uint16_t reserved: 7 | |
| Reserved bytes for future use, must be zero. | |
| } bits | |
| uint16_t value | |
| } | loop_restoration_fields |
| loop restoration parameters | |
| RocdecAv1WarpedMotionParams | wm [7] |
| global motion | |
Field Documentation
◆ base_qindex
| uint8_t _RocdecAV1PicParams::base_qindex |
quantization
Y AC index value range [0..255]
◆ cdef_y_strengths
| uint8_t _RocdecAV1PicParams::cdef_y_strengths[8] |
Encode cdef strength:
The cdef_y_strengths[] and cdef_uv_strengths[] are expected to be packed with both primary and secondary strength. The secondary strength is given in the lower two bits and the primary strength is given in the next four bits.
cdef_y_strengths[] & cdef_uv_strengths[] should be derived as: (cdef_y_strengths[]) = (cdef_y_pri_strength[] << 2) | (cdef_y_sec_strength[] & 0x03) (cdef_uv_strengths[]) = (cdef_uv_pri_strength[] << 2) | (cdef_uv_sec_strength[] & 0x03) In which, cdef_y_pri_strength[]/cdef_y_sec_strength[]/cdef_uv_pri_strength[]/cdef_uv_sec_strength[] are variables defined in AV1 Spec 5.9.19. The cdef_y_strengths[] & cdef_uv_strengths[] are corresponding to LIBAOM variables cm->cdef_strengths[] & cm->cdef_uv_strengths[] respectively.
◆ current_frame
| int _RocdecAV1PicParams::current_frame |
Picture level information.
buffer description of decoded current picture
◆ enable_interintra_compound
| uint32_t _RocdecAV1PicParams::enable_interintra_compound |
read_compound_tools
◆ frame_type
| uint32_t _RocdecAV1PicParams::frame_type |
flags for current picture same syntax and semantic as those in AV1 code
Frame Type 0: KEY_FRAME; 1: INTER_FRAME; 2: INTRA_ONLY_FRAME; 3: SWITCH_FRAME For SWITCH_FRAME, application shall set error_resilient_mode = 1, refresh_frame_flags, etc. appropriately. And driver will convert it to INTER_FRAME.
◆ profile
| uint8_t _RocdecAV1PicParams::profile |
sequence level information
AV1 bit stream profile
◆ ref_frame_idx
| uint8_t _RocdecAV1PicParams::ref_frame_idx[7] |
Reference frame indices.
Contains a list of indices into ref_frame_map[8]. It specifies the reference frame correspondence. The indices of the array are defined as [LAST_FRAME – LAST_FRAME, LAST2_FRAME – LAST_FRAME, …, ALTREF_FRAME – LAST_FRAME], where each symbol is defined as: enum{INTRA_FRAME = 0, LAST_FRAME, LAST2_FRAME, LAST3_FRAME, GOLDEN_FRAME, BWDREF_FRAME, ALTREF2_FRAME, ALTREF_FRAME};
◆ ref_frame_map
| int _RocdecAV1PicParams::ref_frame_map[8] |
Surface indices of reference frames in DPB.
Contains a list of uncompressed frame buffer surface indices as references. Application needs to make sure all the entries point to valid frames except for intra frames by checking ref_frame_id[]. If missing frame is identified, application may choose to perform error recovery by pointing problematic index to an alternative frame buffer. Driver is not responsible to validate reference frames' id.
The documentation for this struct was generated from the following file:
- /home/docs/checkouts/readthedocs.org/user_builds/advanced-micro-devices-rocdecode/checkouts/docs-6.2.1/api/rocdecode.h