/* * Copyright (c) 2020, 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_TRANSFORM_SEARCH_H_ #define AOM_AV1_ENCODER_TRANSFORM_SEARCH_H_ #include "av1/common/pred_common.h" #include "av1/encoder/encoder.h" #ifdef __cplusplus extern "C" { #endif // Set this macro as 1 to collect data about tx size selection. #define COLLECT_TX_SIZE_DATA … #if COLLECT_TX_SIZE_DATA static const char av1_tx_size_data_output_file[] = "tx_size_data.txt"; #endif enum { … } UENUM1BYTE(…) …; static inline int tx_size_cost(const MACROBLOCK *const x, BLOCK_SIZE bsize, TX_SIZE tx_size) { … } /*!\brief Compute the pixel domain distortion. * * \ingroup transform_search * Compute the pixel domain distortion from diff on all visible 4x4s in the * transform block. * * \param[in] x Pointer to structure holding the data for the current encoding macroblock * \param[in] plane Plane index * \param[in] blk_row Block row index * \param[in] blk_col Block col index * \param[in] plane_bsize Current plane block size * \param[in] tx_bsize Transform size * \param[in] block_mse_q8 Block mse * \return An int64_t value that is the block sse. */ int64_t av1_pixel_diff_dist(const MACROBLOCK *x, int plane, int blk_row, int blk_col, const BLOCK_SIZE plane_bsize, const BLOCK_SIZE tx_bsize, unsigned int *block_mse_q8); int64_t av1_estimate_txfm_yrd(const AV1_COMP *const cpi, MACROBLOCK *x, RD_STATS *rd_stats, int64_t ref_best_rd, BLOCK_SIZE bs, TX_SIZE tx_size); /*!\brief Recursive transform size and type search. * * \ingroup transform_search * Search for best transform size and type for luma inter blocks. The transform * block partitioning can be recursive resulting in non-uniform transform sizes. * The best transform size and type, if found, will be saved in the MB_MODE_INFO * structure, and the corresponding RD stats will be saved in rd_stats. * * \param[in] cpi Top-level encoder structure * \param[in] x Pointer to structure holding the data for the current encoding macroblock * \param[in] rd_stats Pointer to struct to keep track of the RD stats * \param[in] bsize Current macroblock size * \param[in] ref_best_rd Best RD cost seen for this block so far * \remark Nothing is returned. The selected transform size and type will be saved in the MB_MODE_INFO structure */ void av1_pick_recursive_tx_size_type_yrd(const AV1_COMP *cpi, MACROBLOCK *x, RD_STATS *rd_stats, BLOCK_SIZE bsize, int64_t ref_best_rd); /*!\brief Uniform transform size and type search. * * \ingroup transform_search * Search for the best transform size and type for current macroblock block, * with the assumption that all the transform blocks have a uniform size * (VP9 style). The selected transform size and type will be saved in the * MB_MODE_INFO structure; the corresponding RD stats will be saved in rd_stats. * This function may be used for both intra and inter predicted blocks. * * \param[in] cpi Top-level encoder structure * \param[in] x Pointer to structure holding the data for the current encoding macroblock * \param[in] rd_stats Pointer to struct to keep track of the RD stats * \param[in] bs Current macroblock size * \param[in] ref_best_rd Best RD cost seen for this block so far * \remark Nothing is returned. The selected transform size and type will be saved in the MB_MODE_INFO structure */ void av1_pick_uniform_tx_size_type_yrd(const AV1_COMP *const cpi, MACROBLOCK *x, RD_STATS *rd_stats, BLOCK_SIZE bs, int64_t ref_best_rd); /*!\brief Chroma block transform search. * * \ingroup transform_search * Calculate the transform coefficient RD cost for the given chroma macroblock * If the current mode is intra, then this function will compute the predictor. * * \param[in] cpi Top-level encoder structure * \param[in] x Pointer to structure holding the data for the current encoding macroblock * \param[in] rd_stats Pointer to struct to keep track of the RD stats * \param[in] bsize Current macroblock size * \param[in] ref_best_rd Best RD cost seen for this block so far * \return An integer value is returned. 0: early termination triggered, no valid rd cost available; 1: rd cost values are valid. */ int av1_txfm_uvrd(const AV1_COMP *const cpi, MACROBLOCK *x, RD_STATS *rd_stats, BLOCK_SIZE bsize, int64_t ref_best_rd); /*!\brief Transform type search with fixed transform size. * * \ingroup transform_search * Search for the best transform type and calculate the transform coefficients * RD cost of the current transform block with the specified (uniform) transform * size and plane. The RD results will be saved in rd_stats. * * \param[in] x Pointer to structure holding the data for the current encoding macroblock * \param[in] cpi Top-level encoder structure * \param[in] rd_stats Pointer to struct to keep track of the RD stats * \param[in] ref_best_rd Best RD cost seen for this block so far * \param[in] current_rd Current RD cost for this block so far * \param[in] plane Plane index * \param[in] plane_bsize Size of the current macroblock considering sup-sampling * \param[in] tx_size The given transform size * \param[in] ftxs_mode Transform search mode specifying desired speed and quality tradeoff * \param[in] skip_trellis Binary flag indicating if trellis optimization should be skipped * * \remark Nothing is returned. The RD results will be saved in rd_stats. */ void av1_txfm_rd_in_plane(MACROBLOCK *x, const AV1_COMP *cpi, RD_STATS *rd_stats, int64_t ref_best_rd, int64_t current_rd, int plane, BLOCK_SIZE plane_bsize, TX_SIZE tx_size, FAST_TX_SEARCH_MODE ftxs_mode, int skip_trellis); /*!\brief Recursive transform size and type search. * * \ingroup transform_search * This function combines y and uv planes' transform search processes together * for inter-predicted blocks (including IntraBC), when the prediction is * already generated. It first does subtraction to obtain the prediction error. * Then it calls * av1_pick_recursive_tx_size_type_yrd/av1_pick_uniform_tx_size_type_yrd and * av1_txfm_uvrd sequentially and handles possible early terminations. * The RD metrics are calculated and stored in rd_stats/_y/_uv. * * \param[in] cpi Top-level encoder structure * \param[in] x Pointer to structure holding the data for the current encoding macroblock * \param[in] bsize Current macroblock size * \param[in] rd_stats Pointer to struct to keep track of the overal RD stats * \param[in] rd_stats_y Pointer to struct to keep track of the RD stats for the luma plane * \param[in] rd_stats_uv Pointer to struct to keep track of the RD stats for the chroma planes * \param[in] mode_rate Rate cost to encode the prediction mode info. of the current macroblock * \param[in] ref_best_rd Best RD cost seen for this block so far * * \return An integer value is returned indicating if a valid transform candidate is found (1) or not (0). */ int av1_txfm_search(const AV1_COMP *cpi, MACROBLOCK *x, BLOCK_SIZE bsize, RD_STATS *rd_stats, RD_STATS *rd_stats_y, RD_STATS *rd_stats_uv, int mode_rate, int64_t ref_best_rd); #ifdef __cplusplus } // extern "C" #endif #endif // AOM_AV1_ENCODER_TRANSFORM_SEARCH_H_
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