| /* |
| * 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_ENCODER_BITSTREAM_H_ |
| #define AOM_AV1_ENCODER_BITSTREAM_H_ |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| #include "av1/common/av1_common_int.h" |
| #include "av1/common/blockd.h" |
| #include "av1/common/enums.h" |
| #include "av1/encoder/level.h" |
| #include "aom_dsp/bitwriter.h" |
| |
| struct aom_write_bit_buffer; |
| struct AV1_COMP; |
| struct ThreadData; |
| |
| /*!\cond */ |
| |
| // Stores the location and size of a tile's data in the bitstream. Used for |
| // later identifying identical tiles |
| typedef struct { |
| uint8_t *data; |
| size_t size; |
| } TileBufferEnc; |
| |
| typedef struct { |
| uint8_t *frame_header; |
| size_t obu_header_byte_offset; |
| size_t total_length; |
| } FrameHeaderInfo; |
| |
| typedef struct { |
| struct aom_write_bit_buffer *saved_wb; // Bit stream buffer writer structure |
| TileBufferEnc buf; // Structure to hold bitstream buffer and size |
| uint32_t *total_size; // Size of the bitstream buffer for the tile in bytes |
| uint8_t *dst; // Base address of tile bitstream buffer |
| uint8_t *tile_data_curr; // Base address of tile-group bitstream buffer |
| size_t tile_buf_size; // Available bitstream buffer for the tile in bytes |
| uint8_t obu_extn_header; // Presence of OBU extension header |
| uint32_t obu_header_size; // Size of the OBU header |
| int curr_tg_hdr_size; // Size of the obu, tg, frame headers |
| int tile_size_mi; // Tile size in mi units |
| int tile_row; // Number of tile rows |
| int tile_col; // Number of tile columns |
| int is_last_tile_in_tg; // Flag to indicate last tile in a tile-group |
| int new_tg; // Flag to indicate starting of a new tile-group |
| } PackBSParams; |
| |
| typedef struct { |
| uint64_t abs_sum_level; |
| uint16_t tile_idx; |
| } PackBSTileOrder; |
| |
| // Pack bitstream data for pack bitstream multi-threading. |
| typedef struct { |
| #if CONFIG_MULTITHREAD |
| // Mutex lock used while dispatching jobs. |
| pthread_mutex_t *mutex_; |
| #endif |
| // Tile order structure of pack bitstream multithreading. |
| PackBSTileOrder pack_bs_tile_order[MAX_TILES]; |
| |
| // Index of next job to be processed. |
| int next_job_idx; |
| } AV1EncPackBSSync; |
| |
| /*!\endcond */ |
| |
| // Writes only the OBU Sequence Header payload, and returns the size of the |
| // payload written to 'dst'. This function does not write the OBU header, the |
| // optional extension, or the OBU size to 'dst'. |
| uint32_t av1_write_sequence_header_obu(const SequenceHeader *seq_params, |
| uint8_t *const dst); |
| |
| // Writes the OBU header byte, and the OBU header extension byte when |
| // 'obu_extension' is non-zero. Returns number of bytes written to 'dst'. |
| uint32_t av1_write_obu_header(AV1LevelParams *const level_params, |
| int *frame_header_count, OBU_TYPE obu_type, |
| int obu_extension, uint8_t *const dst); |
| |
| int av1_write_uleb_obu_size(size_t obu_header_size, size_t obu_payload_size, |
| uint8_t *dest); |
| |
| // Pack tile data in the bitstream with tile_group, frame |
| // and OBU header. |
| void av1_pack_tile_info(struct AV1_COMP *const cpi, struct ThreadData *const td, |
| PackBSParams *const pack_bs_params); |
| |
| void av1_write_last_tile_info( |
| struct AV1_COMP *const cpi, const FrameHeaderInfo *fh_info, |
| struct aom_write_bit_buffer *saved_wb, size_t *curr_tg_data_size, |
| uint8_t *curr_tg_start, uint32_t *const total_size, |
| uint8_t **tile_data_start, int *const largest_tile_id, |
| int *const is_first_tg, uint32_t obu_header_size, uint8_t obu_extn_header); |
| |
| /*!\brief Pack the bitstream for one frame |
| * |
| * \ingroup high_level_algo |
| * \callgraph |
| */ |
| int av1_pack_bitstream(struct AV1_COMP *const cpi, uint8_t *dst, size_t *size, |
| int *const largest_tile_id); |
| |
| void av1_write_tx_type(const AV1_COMMON *const cm, const MACROBLOCKD *xd, |
| TX_TYPE tx_type, TX_SIZE tx_size, aom_writer *w); |
| |
| void av1_reset_pack_bs_thread_data(struct ThreadData *const td); |
| |
| void av1_accumulate_pack_bs_thread_data(struct AV1_COMP *const cpi, |
| struct ThreadData const *td); |
| |
| void av1_write_obu_tg_tile_headers(struct AV1_COMP *const cpi, |
| MACROBLOCKD *const xd, |
| PackBSParams *const pack_bs_params, |
| const int tile_idx); |
| #ifdef __cplusplus |
| } // extern "C" |
| #endif |
| |
| #endif // AOM_AV1_ENCODER_BITSTREAM_H_ |