/* * Copyright (c) 2021, 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.
*/
// TODO(bohanli): optimize this number #define MAX_THIRD_PASS_BUF \
(AOMMAX((2 * MAX_GF_INTERVAL + 1), MAX_STATIC_GF_GROUP_LENGTH))
// Struct to store useful information related to a GOP, in addition to what is // available in the bitstream typedefstruct { int gf_length; int num_frames; int use_arf;
} THIRD_PASS_GOP_INFO;
#if CONFIG_BITRATE_ACCURACY typedefstruct TPL_INFO { int gf_length; int tpl_ready;
TplTxfmStats txfm_stats_list[MAX_LENGTH_TPL_FRAME_STATS]; double qstep_ratio_ls[MAX_LENGTH_TPL_FRAME_STATS];
FRAME_UPDATE_TYPE update_type_list[MAX_LENGTH_TPL_FRAME_STATS];
} TPL_INFO; #endif// CONFIG_BITRATE_ACCURACY
typedefstruct {
BLOCK_SIZE bsize;
PARTITION_TYPE partition; int mi_row_start; int mi_col_start;
int_mv mv[2];
MV_REFERENCE_FRAME ref_frame[2];
PREDICTION_MODE pred_mode;
} THIRD_PASS_MI_INFO;
// Struct to store useful information about a frame for the third pass. // The members are extracted from the decoder by function get_frame_info. typedefstruct { int width; int height; int mi_stride; int mi_rows; int mi_cols; int base_q_idx; int is_show_existing_frame; int is_show_frame; int bits_allocated; int actual_bits;
uint64_t sse; double bpm_factor;
FRAME_TYPE frame_type; unsignedint order_hint;
THIRD_PASS_MI_INFO *mi_info;
} THIRD_PASS_FRAME_INFO;
typedefstruct { /* --- Input and decoding related members --- */ // the input file constchar *input_file_name; #if CONFIG_THREE_PASS // input context struct AvxInputContext *input_ctx; #endif // decoder codec context
aom_codec_ctx_t decoder; // start of the frame in buf constunsignedchar *frame; // end of the frame(s) in buf constunsignedchar *end_frame; // whether we still have following frames in buf int have_frame; // pointer to buffer for the read frames
uint8_t *buf; // size of data in buffer
size_t bytes_in_buffer; // current buffer size
size_t buffer_size; // error info pointer struct aom_internal_error_info *err_info;
int this_frame_bits;
/* --- Members for third pass encoding --- */ // Array to store info about each frame. // frame_info[0] should point to the current frame.
THIRD_PASS_FRAME_INFO frame_info[MAX_THIRD_PASS_BUF]; // number of frames available in frame_info int frame_info_count; // the end of the previous GOP (order hint) int prev_gop_end;
THIRD_PASS_GOP_INFO gop_info;
} THIRD_PASS_DEC_CTX;
// Set the GOP structure from the twopass bitstream. // TODO(bohanli): this is currently a skeleton and we only return the gop // length. This function also saves all frame information in the array // ctx->frame_info for this GOP. void av1_set_gop_third_pass(THIRD_PASS_DEC_CTX *ctx);
// Pop one frame out of the array ctx->frame_info. This function is used to make // sure that frame_info[0] always corresponds to the current frame. void av1_pop_third_pass_info(THIRD_PASS_DEC_CTX *ctx);
void av1_open_second_pass_log(struct AV1_COMP *cpi, int is_read); void av1_close_second_pass_log(struct AV1_COMP *cpi);
// Write the current GOP information into the second pass log file. void av1_write_second_pass_gop_info(struct AV1_COMP *cpi); // Write the information of the frames in this GOP into the second pass log // file. void av1_write_second_pass_per_frame_info(struct AV1_COMP *cpi, int gf_index);
// Read the next GOP information from the second pass log file. void av1_read_second_pass_gop_info(FILE *second_pass_log_stream,
THIRD_PASS_GOP_INFO *gop_info, struct aom_internal_error_info *error); // read the information of the frames in next GOP from the second pass log file. void av1_read_second_pass_per_frame_info(FILE *second_pass_log_stream,
THIRD_PASS_FRAME_INFO *frame_info_arr, int frame_info_count, struct aom_internal_error_info *error);
int av1_check_use_arf(THIRD_PASS_DEC_CTX *ctx);
// Calculate the ratio of third pass frame dimensions over second pass frame // dimensions. Return them in ratio_h and ratio_w. void av1_get_third_pass_ratio(THIRD_PASS_DEC_CTX *ctx, int fidx, int fheight, int fwidth, double *ratio_h, double *ratio_w);
// Get the pointer to a second pass mi info, where mi_row and mi_col are the mi // location in the thirdpass frame.
THIRD_PASS_MI_INFO *av1_get_third_pass_mi(THIRD_PASS_DEC_CTX *ctx, int fidx, int mi_row, int mi_col, double ratio_h, double ratio_w);
// Get the adjusted MVs of this_mi, associated with the reference frame. If no // MV is found with the reference frame, INVALID_MV is returned.
int_mv av1_get_third_pass_adjusted_mv(THIRD_PASS_MI_INFO *this_mi, double ratio_h, double ratio_w,
MV_REFERENCE_FRAME frame);
// Get the adjusted block size of this_mi.
BLOCK_SIZE av1_get_third_pass_adjusted_blk_size(THIRD_PASS_MI_INFO *this_mi, double ratio_h, double ratio_w);
// Get the adjusted mi position in the third pass frame, of a given // third_pass_mi. Location is returned in mi_row and mi_col. void av1_third_pass_get_adjusted_mi(THIRD_PASS_MI_INFO *third_pass_mi, double ratio_h, double ratio_w, int *mi_row, int *mi_col);
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