| /* |
| * Copyright (c) 2016, Alliance for Open Media. All rights reserved |
| * |
| * This source code is subject to the terms of the BSD 2 Clause License and |
| * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License |
| * was not distributed with this source code in the LICENSE file, you can |
| * obtain it at www.aomedia.org/license/software. If the Alliance for Open |
| * Media Patent License 1.0 was not distributed with this source code in the |
| * PATENTS file, you can obtain it at www.aomedia.org/license/patent. |
| */ |
| |
| #ifndef AOM_AV1_DECODER_DECODER_H_ |
| #define AOM_AV1_DECODER_DECODER_H_ |
| |
| #include "config/aom_config.h" |
| |
| #include "aom/aom_codec.h" |
| #include "aom_dsp/bitreader.h" |
| #include "aom_scale/yv12config.h" |
| #include "aom_util/aom_thread.h" |
| |
| #include "av1/common/av1_common_int.h" |
| #include "av1/common/thread_common.h" |
| #include "av1/decoder/dthread.h" |
| #if CONFIG_ACCOUNTING |
| #include "av1/decoder/accounting.h" |
| #endif |
| #if CONFIG_INSPECTION |
| #include "av1/decoder/inspection.h" |
| #endif |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| /*! |
| * \brief Contains coding block data required by the decoder. |
| * |
| * This includes: |
| * - Coding block info that is common between encoder and decoder. |
| * - Other coding block info only needed by the decoder. |
| * Contrast this with a similar struct MACROBLOCK on encoder side. |
| * This data is also common between ThreadData and AV1Decoder structs. |
| */ |
| typedef struct DecoderCodingBlock { |
| /*! |
| * Coding block info that is common between encoder and decoder. |
| */ |
| DECLARE_ALIGNED(32, MACROBLOCKD, xd); |
| /*! |
| * True if the at least one of the coding blocks decoded was corrupted. |
| */ |
| int corrupted; |
| /*! |
| * Pointer to 'mc_buf' inside 'pbi->td' (single-threaded decoding) or |
| * 'pbi->thread_data[i].td' (multi-threaded decoding). |
| */ |
| uint8_t *mc_buf[2]; |
| /*! |
| * Pointer to 'dqcoeff' inside 'td->cb_buffer_base' or 'pbi->cb_buffer_base' |
| * with appropriate offset for the current superblock, for each plane. |
| */ |
| tran_low_t *dqcoeff_block[MAX_MB_PLANE]; |
| /*! |
| * cb_offset[p] is the offset into the dqcoeff_block[p] for the current coding |
| * block, for each plane 'p'. |
| */ |
| uint16_t cb_offset[MAX_MB_PLANE]; |
| /*! |
| * Pointer to 'eob_data' inside 'td->cb_buffer_base' or 'pbi->cb_buffer_base' |
| * with appropriate offset for the current superblock, for each plane. |
| */ |
| eob_info *eob_data[MAX_MB_PLANE]; |
| /*! |
| * txb_offset[p] is the offset into the eob_data[p] for the current coding |
| * block, for each plane 'p'. |
| */ |
| uint16_t txb_offset[MAX_MB_PLANE]; |
| /*! |
| * ref_mv_count[i] specifies the number of number of motion vector candidates |
| * in xd->ref_mv_stack[i]. |
| */ |
| uint8_t ref_mv_count[MODE_CTX_REF_FRAMES]; |
| } DecoderCodingBlock; |
| |
| /*!\cond */ |
| |
| typedef void (*decode_block_visitor_fn_t)(const AV1_COMMON *const cm, |
| DecoderCodingBlock *dcb, |
| aom_reader *const r, const int plane, |
| const int row, const int col, |
| const TX_SIZE tx_size); |
| |
| typedef void (*predict_inter_block_visitor_fn_t)(AV1_COMMON *const cm, |
| DecoderCodingBlock *dcb, |
| BLOCK_SIZE bsize); |
| |
| typedef void (*cfl_store_inter_block_visitor_fn_t)(AV1_COMMON *const cm, |
| MACROBLOCKD *const xd); |
| |
| typedef struct ThreadData { |
| DecoderCodingBlock dcb; |
| |
| // Coding block buffer for the current superblock. |
| // Used only for single-threaded decoding and multi-threaded decoding with |
| // row_mt == 1 cases. |
| // See also: similar buffer in 'AV1Decoder'. |
| CB_BUFFER cb_buffer_base; |
| |
| aom_reader *bit_reader; |
| |
| // Motion compensation buffer used to get a prediction buffer with extended |
| // borders. One buffer for each of the two possible references. |
| uint8_t *mc_buf[2]; |
| // Mask for this block used for compound prediction. |
| uint8_t *seg_mask; |
| // Allocated size of 'mc_buf'. |
| int32_t mc_buf_size; |
| // If true, the pointers in 'mc_buf' were converted from highbd pointers. |
| int mc_buf_use_highbd; // Boolean: whether the byte pointers stored in |
| // mc_buf were converted from highbd pointers. |
| |
| CONV_BUF_TYPE *tmp_conv_dst; |
| uint8_t *tmp_obmc_bufs[2]; |
| |
| decode_block_visitor_fn_t read_coeffs_tx_intra_block_visit; |
| decode_block_visitor_fn_t predict_and_recon_intra_block_visit; |
| decode_block_visitor_fn_t read_coeffs_tx_inter_block_visit; |
| decode_block_visitor_fn_t inverse_tx_inter_block_visit; |
| predict_inter_block_visitor_fn_t predict_inter_block_visit; |
| cfl_store_inter_block_visitor_fn_t cfl_store_inter_block_visit; |
| } ThreadData; |
| |
| typedef struct AV1DecRowMTJobInfo { |
| int tile_row; |
| int tile_col; |
| int mi_row; |
| } AV1DecRowMTJobInfo; |
| |
| typedef struct AV1DecRowMTSyncData { |
| #if CONFIG_MULTITHREAD |
| pthread_mutex_t *mutex_; |
| pthread_cond_t *cond_; |
| #endif |
| int allocated_sb_rows; |
| int *cur_sb_col; |
| // Denotes the superblock interval at which conditional signalling should |
| // happen. Also denotes the minimum number of extra superblocks of the top row |
| // to be complete to start decoding the current superblock. A value of 1 |
| // indicates top-right dependency. |
| int sync_range; |
| // Denotes the additional number of superblocks in the previous row to be |
| // complete to start decoding the current superblock when intraBC tool is |
| // enabled. This additional top-right delay is required to satisfy the |
| // hardware constraints for intraBC tool when row multithreading is enabled. |
| int intrabc_extra_top_right_sb_delay; |
| int mi_rows; |
| int mi_cols; |
| int mi_rows_parse_done; |
| int mi_rows_decode_started; |
| int num_threads_working; |
| } AV1DecRowMTSync; |
| |
| typedef struct AV1DecRowMTInfo { |
| int tile_rows_start; |
| int tile_rows_end; |
| int tile_cols_start; |
| int tile_cols_end; |
| int start_tile; |
| int end_tile; |
| int mi_rows_to_decode; |
| |
| // Invariant: |
| // mi_rows_parse_done >= mi_rows_decode_started. |
| // mi_rows_parse_done and mi_rows_decode_started are both initialized to 0. |
| // mi_rows_parse_done is incremented freely. mi_rows_decode_started may only |
| // be incremented to catch up with mi_rows_parse_done but is not allowed to |
| // surpass mi_rows_parse_done. |
| // |
| // When mi_rows_decode_started reaches mi_rows_to_decode, there are no more |
| // decode jobs. |
| |
| // Indicates the progress of the bit-stream parsing of superblocks. |
| // Initialized to 0. Incremented by sb_mi_size when parse sb row is done. |
| int mi_rows_parse_done; |
| // Indicates the progress of the decoding of superblocks. |
| // Initialized to 0. Incremented by sb_mi_size when decode sb row is started. |
| int mi_rows_decode_started; |
| // Boolean: Initialized to 0 (false). Set to 1 (true) on error to abort |
| // decoding. |
| int row_mt_exit; |
| } AV1DecRowMTInfo; |
| |
| typedef struct TileDataDec { |
| TileInfo tile_info; |
| aom_reader bit_reader; |
| DECLARE_ALIGNED(16, FRAME_CONTEXT, tctx); |
| AV1DecRowMTSync dec_row_mt_sync; |
| } TileDataDec; |
| |
| typedef struct TileBufferDec { |
| const uint8_t *data; |
| size_t size; |
| } TileBufferDec; |
| |
| typedef struct DataBuffer { |
| const uint8_t *data; |
| size_t size; |
| } DataBuffer; |
| |
| typedef struct EXTERNAL_REFERENCES { |
| YV12_BUFFER_CONFIG refs[MAX_EXTERNAL_REFERENCES]; |
| int num; |
| } EXTERNAL_REFERENCES; |
| |
| typedef struct TileJobsDec { |
| TileBufferDec *tile_buffer; |
| TileDataDec *tile_data; |
| } TileJobsDec; |
| |
| typedef struct AV1DecTileMTData { |
| #if CONFIG_MULTITHREAD |
| pthread_mutex_t *job_mutex; |
| #endif |
| TileJobsDec *job_queue; |
| int jobs_enqueued; |
| int jobs_dequeued; |
| int alloc_tile_rows; |
| int alloc_tile_cols; |
| } AV1DecTileMT; |
| |
| typedef struct AV1Decoder { |
| DecoderCodingBlock dcb; |
| |
| DECLARE_ALIGNED(32, AV1_COMMON, common); |
| |
| AVxWorker lf_worker; |
| AV1LfSync lf_row_sync; |
| AV1LrSync lr_row_sync; |
| AV1LrStruct lr_ctxt; |
| AV1CdefSync cdef_sync; |
| AV1CdefWorkerData *cdef_worker; |
| AVxWorker *tile_workers; |
| int num_workers; |
| DecWorkerData *thread_data; |
| ThreadData td; |
| TileDataDec *tile_data; |
| int allocated_tiles; |
| |
| TileBufferDec tile_buffers[MAX_TILE_ROWS][MAX_TILE_COLS]; |
| AV1DecTileMT tile_mt_info; |
| |
| // Each time the decoder is called, we expect to receive a full temporal unit. |
| // This can contain up to one shown frame per spatial layer in the current |
| // operating point (note that some layers may be entirely omitted). |
| // If the 'output_all_layers' option is true, we save all of these shown |
| // frames so that they can be returned to the application. If the |
| // 'output_all_layers' option is false, then we only output one image per |
| // temporal unit. |
| // |
| // Note: The saved buffers are released at the start of the next time the |
| // application calls aom_codec_decode(). |
| int output_all_layers; |
| RefCntBuffer *output_frames[MAX_NUM_SPATIAL_LAYERS]; |
| size_t num_output_frames; // How many frames are queued up so far? |
| |
| // In order to properly support random-access decoding, we need |
| // to behave slightly differently for the very first frame we decode. |
| // So we track whether this is the first frame or not. |
| int decoding_first_frame; |
| |
| int allow_lowbitdepth; |
| int max_threads; |
| int inv_tile_order; |
| int need_resync; // wait for key/intra-only frame. |
| int reset_decoder_state; |
| |
| int tile_size_bytes; |
| int tile_col_size_bytes; |
| int dec_tile_row, dec_tile_col; // always -1 for non-VR tile encoding |
| #if CONFIG_ACCOUNTING |
| int acct_enabled; |
| Accounting accounting; |
| #endif |
| int sequence_header_ready; |
| int sequence_header_changed; |
| #if CONFIG_INSPECTION |
| aom_inspect_cb inspect_cb; |
| void *inspect_ctx; |
| #endif |
| int operating_point; |
| int current_operating_point; |
| int seen_frame_header; |
| // The expected start_tile (tg_start syntax element) of the next tile group. |
| int next_start_tile; |
| |
| // State if the camera frame header is already decoded while |
| // large_scale_tile = 1. |
| int camera_frame_header_ready; |
| size_t frame_header_size; |
| DataBuffer obu_size_hdr; |
| int output_frame_width_in_tiles_minus_1; |
| int output_frame_height_in_tiles_minus_1; |
| int tile_count_minus_1; |
| uint32_t coded_tile_data_size; |
| unsigned int ext_tile_debug; // for ext-tile software debug & testing |
| |
| // Decoder has 3 modes of operation: |
| // (1) Single-threaded decoding. |
| // (2) Multi-threaded decoding with each tile decoded in parallel. |
| // (3) In addition to (2), each thread decodes 1 superblock row in parallel. |
| // row_mt = 1 triggers mode (3) above, while row_mt = 0, will trigger mode (1) |
| // or (2) depending on 'max_threads'. |
| unsigned int row_mt; |
| |
| EXTERNAL_REFERENCES ext_refs; |
| YV12_BUFFER_CONFIG tile_list_outbuf; |
| |
| // Coding block buffer for the current frame. |
| // Allocated and used only for multi-threaded decoding with 'row_mt == 0'. |
| // See also: similar buffer in 'ThreadData' struct. |
| CB_BUFFER *cb_buffer_base; |
| // Allocated size of 'cb_buffer_base'. Currently same as the number of |
| // superblocks in the coded frame. |
| int cb_buffer_alloc_size; |
| |
| int allocated_row_mt_sync_rows; |
| |
| #if CONFIG_MULTITHREAD |
| pthread_mutex_t *row_mt_mutex_; |
| pthread_cond_t *row_mt_cond_; |
| #endif |
| |
| AV1DecRowMTInfo frame_row_mt_info; |
| aom_metadata_array_t *metadata; |
| |
| int context_update_tile_id; |
| int skip_loop_filter; |
| int skip_film_grain; |
| int is_annexb; |
| int valid_for_referencing[REF_FRAMES]; |
| int is_fwd_kf_present; |
| int is_arf_frame_present; |
| int num_tile_groups; |
| aom_s_frame_info sframe_info; |
| |
| /*! |
| * Elements part of the sequence header, that are applicable for all the |
| * frames in the video. |
| */ |
| SequenceHeader seq_params; |
| |
| /*! |
| * If true, buffer removal times are present. |
| */ |
| bool buffer_removal_time_present; |
| |
| /*! |
| * Code and details about current error status. |
| */ |
| struct aom_internal_error_info error; |
| |
| /*! |
| * Number of temporal layers: may be > 1 for SVC (scalable vector coding). |
| */ |
| unsigned int number_temporal_layers; |
| |
| /*! |
| * Number of spatial layers: may be > 1 for SVC (scalable vector coding). |
| */ |
| unsigned int number_spatial_layers; |
| } AV1Decoder; |
| |
| // Returns 0 on success. Sets pbi->common.error.error_code to a nonzero error |
| // code and returns a nonzero value on failure. |
| int av1_receive_compressed_data(struct AV1Decoder *pbi, size_t size, |
| const uint8_t **psource); |
| |
| // Get the frame at a particular index in the output queue |
| int av1_get_raw_frame(AV1Decoder *pbi, size_t index, YV12_BUFFER_CONFIG **sd, |
| aom_film_grain_t **grain_params); |
| |
| int av1_get_frame_to_show(struct AV1Decoder *pbi, YV12_BUFFER_CONFIG *frame); |
| |
| aom_codec_err_t av1_copy_reference_dec(struct AV1Decoder *pbi, int idx, |
| YV12_BUFFER_CONFIG *sd); |
| |
| aom_codec_err_t av1_set_reference_dec(AV1_COMMON *cm, int idx, |
| int use_external_ref, |
| YV12_BUFFER_CONFIG *sd); |
| aom_codec_err_t av1_copy_new_frame_dec(AV1_COMMON *cm, |
| YV12_BUFFER_CONFIG *new_frame, |
| YV12_BUFFER_CONFIG *sd); |
| |
| struct AV1Decoder *av1_decoder_create(BufferPool *const pool); |
| |
| void av1_decoder_remove(struct AV1Decoder *pbi); |
| void av1_dealloc_dec_jobs(struct AV1DecTileMTData *tile_mt_info); |
| |
| void av1_dec_row_mt_dealloc(AV1DecRowMTSync *dec_row_mt_sync); |
| |
| void av1_dec_free_cb_buf(AV1Decoder *pbi); |
| |
| static INLINE void decrease_ref_count(RefCntBuffer *const buf, |
| BufferPool *const pool) { |
| if (buf != NULL) { |
| --buf->ref_count; |
| // Reference counts should never become negative. If this assertion fails, |
| // there is a bug in our reference count management. |
| assert(buf->ref_count >= 0); |
| // A worker may only get a free framebuffer index when calling get_free_fb. |
| // But the raw frame buffer is not set up until we finish decoding header. |
| // So if any error happens during decoding header, frame_bufs[idx] will not |
| // have a valid raw frame buffer. |
| if (buf->ref_count == 0 && buf->raw_frame_buffer.data) { |
| pool->release_fb_cb(pool->cb_priv, &buf->raw_frame_buffer); |
| buf->raw_frame_buffer.data = NULL; |
| buf->raw_frame_buffer.size = 0; |
| buf->raw_frame_buffer.priv = NULL; |
| } |
| } |
| } |
| |
| #define ACCT_STR __func__ |
| static INLINE int av1_read_uniform(aom_reader *r, int n) { |
| const int l = get_unsigned_bits(n); |
| const int m = (1 << l) - n; |
| const int v = aom_read_literal(r, l - 1, ACCT_STR); |
| assert(l != 0); |
| if (v < m) |
| return v; |
| else |
| return (v << 1) - m + aom_read_literal(r, 1, ACCT_STR); |
| } |
| |
| typedef void (*palette_visitor_fn_t)(MACROBLOCKD *const xd, int plane, |
| aom_reader *r); |
| |
| void av1_visit_palette(AV1Decoder *const pbi, MACROBLOCKD *const xd, |
| aom_reader *r, palette_visitor_fn_t visit); |
| |
| typedef void (*block_visitor_fn_t)(AV1Decoder *const pbi, ThreadData *const td, |
| int mi_row, int mi_col, aom_reader *r, |
| PARTITION_TYPE partition, BLOCK_SIZE bsize); |
| |
| /*!\endcond */ |
| |
| #ifdef __cplusplus |
| } // extern "C" |
| #endif |
| |
| #endif // AOM_AV1_DECODER_DECODER_H_ |