/* * 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.
*/
// The segment ids used in cyclic refresh: from base (no boost) to increasing // boost (higher delta-qp). #define CR_SEGMENT_ID_BASE 0 #define CR_SEGMENT_ID_BOOST1 1 #define CR_SEGMENT_ID_BOOST2 2
// Maximum rate target ratio for setting segment delta-qp. #define CR_MAX_RATE_TARGET_RATIO 4.0
/*! * \brief The stucture of CYCLIC_REFRESH. * \ingroup cyclic_refresh
*/ struct CYCLIC_REFRESH { /*! * Percentage of blocks per frame that are targeted as candidates * for cyclic refresh.
*/ int percent_refresh;
/*! * Active adjustment delta for cyclic refresh for rate control.
*/ int percent_refresh_adjustment;
/*! * Maximum q-delta as percentage of base q.
*/ int max_qdelta_perc; /*! *Superblock starting index for cycling through the frame.
*/ int sb_index; /*! *Superblock index cyclic refresh index last frame
*/ int last_sb_index; /*! * Controls how long block will need to wait to be refreshed again, in * excess of the cycle time, i.e., in the case of all zero motion, block * will be refreshed every (100/percent_refresh + time_for_refresh) frames.
*/ int time_for_refresh; /*! * Target number of (4x4) blocks that are set for delta-q.
*/ int target_num_seg_blocks; /*! * Actual number of (4x4) blocks that were applied delta-q, * for segment 1.
*/ int actual_num_seg1_blocks; /*! * Actual number of (4x4) blocks that were applied delta-q, * for segment 2.
*/ int actual_num_seg2_blocks; /*! * RD mult. parameters for segment 1.
*/ int rdmult; /*! * Cyclic refresh map.
*/
int8_t *map; /*! * Threshold applied to the projected rate of the coding block, * when deciding whether block should be refreshed.
*/
int64_t thresh_rate_sb; /*! * Threshold applied to the projected distortion of the coding block, * when deciding whether block should be refreshed.
*/
int64_t thresh_dist_sb; /*! * Threshold applied to the motion vector (in units of 1/8 pel) of the * coding block, when deciding whether block should be refreshed.
*/
int16_t motion_thresh; /*! * Rate target ratio to set q delta.
*/ double rate_ratio_qdelta;
/*! * Active adjustment of qdelta rate ratio for enhanced rate control
*/ double rate_ratio_qdelta_adjustment;
/*! * Boost factor for rate target ratio, for segment CR_SEGMENT_ID_BOOST2.
*/ int rate_boost_fac;
/*!\cond */ int qindex_delta[3]; int apply_cyclic_refresh; int skip_over4x4; int counter_encode_maxq_scene_change; int use_block_sad_scene_det; /*!\endcond */
};
struct AV1_COMP;
typedefstruct CYCLIC_REFRESH CYCLIC_REFRESH;
CYCLIC_REFRESH *av1_cyclic_refresh_alloc(int mi_rows, int mi_cols);
void av1_cyclic_refresh_free(CYCLIC_REFRESH *cr);
/*!\brief Estimate the bits, incorporating the delta-q from the segments. * * For the just encoded frame, estimate the bits, incorporating the delta-q * from non-base segment(s). Note this function is called in the postencode * (called from rc_update_rate_correction_factors()). * * \ingroup cyclic_refresh * \callgraph * \callergraph * * \param[in] cpi Top level encoder structure * \param[in] correction_factor rate correction factor * * \return Return the estimated bits at given q.
*/ int av1_cyclic_refresh_estimate_bits_at_q(conststruct AV1_COMP *cpi, double correction_factor);
/*!\brief Estimate the bits per mb, for given q = i and delta-q. * * Prior to encoding the frame, estimate the bits per mb, for a given q = i and * a corresponding delta-q (for segment 1). This function is called in the * rc_regulate_q() to set the base qp index. Note: the segment map is set to * either 0/CR_SEGMENT_ID_BASE (no refresh) or to 1/CR_SEGMENT_ID_BOOST1 * (refresh) for each superblock, prior to encoding. * * \ingroup cyclic_refresh * \callgraph * \callergraph * * \param[in] cpi Top level encoder structure * \param[in] i q index * \param[in] correction_factor rate correction factor * * \return Return the estimated bits for q = i and delta-q (segment 1).
*/ int av1_cyclic_refresh_rc_bits_per_mb(conststruct AV1_COMP *cpi, int i, double correction_factor);
/*!\brief Update segment_id for blocks are skipped. * * After encoding a given prediction block, of size bsize at (mi_row, mi_col), * check if we should reset the segment_id based on skip_txfm, * and update the cyclic_refresh map and segmentation counters. * * \ingroup cyclic_refresh * \callgraph * \callergraph * * \param[in] cpi Top level encoder structure * \param[in] x Pointer to MACROBLOCK structure * \param[in] mi_row Row coordinate of the block in a step size of MI_SIZE * \param[in] mi_col Col coordinate of the block in a step size of MI_SIZE * \param[in] bsize Block size * \param[in] dry_run A code indicating whether it is part of the final * pass for reconstructing the superblock * * \remark Update the \c mbmi->segment_id, the \c cpi->cyclic_refresh and * the \c cm->cpi->enc_seg.map.
*/
void av1_cyclic_reset_segment_skip(conststruct AV1_COMP *cpi,
MACROBLOCK *const x, int mi_row, int mi_col,
BLOCK_SIZE bsize, RUN_TYPE dry_run);
/*!\brief Update segment_id for block based on mode selected. * * Prior to coding a given prediction block, of size bsize at (mi_row, mi_col), * check if we should reset the segment_id (based on mode/motion/skip selected * for that block) and update the cyclic_refresh map and segmentation map. * * \ingroup cyclic_refresh * \callgraph * \callergraph * * \param[in] cpi Top level encoder structure * \param[in] x Pointer to MACROBLOCK structure * \param[in] mi_row Row coordinate of the block in a step size of MI_SIZE * \param[in] mi_col Col coordinate of the block in a step size of MI_SIZE * \param[in] bsize Block size * \param[in] rate Projected block rate from pickmode * \param[in] dist Projected block dist from pickmode * \param[in] skip Skip flag set from picmode * \param[in] dry_run A code indicating whether it is part of the final * pass for reconstructing the superblock * * \remark Update the \c mbmi->segment_id, the \c cpi->cyclic_refresh and * the \c cm->cpi->enc_seg.map.
*/ void av1_cyclic_refresh_update_segment(conststruct AV1_COMP *cpi,
MACROBLOCK *const x, int mi_row, int mi_col, BLOCK_SIZE bsize,
int64_t rate, int64_t dist, int skip,
RUN_TYPE dry_run);
/*!\brief Initialize counters used for cyclic refresh. * * Initializes cyclic refresh counters actual_num_seg1_blocks and * actual_num_seg2_blocks. * * \ingroup cyclic_refresh * \callgraph * \callergraph * * \param[in] x Pointer to MACROBLOCK structure * * \remark Update the \c x->actual_num_seg1_blocks and the * \c x->actual_num_seg2_blocks.
*/ void av1_init_cyclic_refresh_counters(MACROBLOCK *const x);
/*!\brief Accumulate cyclic refresh counters. * * Accumulates cyclic refresh counters actual_num_seg1_blocks and * actual_num_seg2_blocks from MACROBLOCK strcture to CYCLIC_REFRESH strcture. * * \ingroup cyclic_refresh * \callgraph * \callergraph * * \param[in] cyclic_refresh Pointer to CYCLIC_REFRESH structure * \param[in] x Pointer to MACROBLOCK structure * * \remark Update the \c cyclic_refresh->actual_num_seg1_blocks and the * \c cyclic_refresh->actual_num_seg2_blocks.
*/ void av1_accumulate_cyclic_refresh_counters(
CYCLIC_REFRESH *const cyclic_refresh, const MACROBLOCK *const x);
/*!\brief Set golden frame update interval nased on cyclic refresh. * * \ingroup cyclic_refresh * \callgraph * \callergraph * * \param[in] cpi Top level encoder structure * * \remark Returns the interval in \c cpi->rc.baseline_gf_interval.
*/ void av1_cyclic_refresh_set_golden_update(struct AV1_COMP *const cpi);
/*!\brief Set the global/frame level parameters for cyclic refresh. * * First call to the cyclic refresh, before encoding the frame. * Sets the flag on whether cyclic refresh should be applied, sets * the amount/percent of refresh, and the amount of boost applied to * the two segments (set by rate_ratio_qdelta and rate_boost_fac). * * \ingroup cyclic_refresh * \callgraph * \callergraph * * \param[in] cpi Top level encoder structure * * \remark Updates the \c cpi->cyclic_refresh with the settings.
*/ void av1_cyclic_refresh_update_parameters(struct AV1_COMP *const cpi);
/*!\brief Setup the cyclic background refresh. * * Set the delta q for the segment(s), and set the segmentation map. * * \ingroup cyclic_refresh * \callgraph * \callergraph * * \param[in] cpi Top level encoder structure * * \remark Updates the \c cpi->cyclic_refresh with the cyclic refresh * parameters and the \c cm->seg with the segmentation data.
*/ void av1_cyclic_refresh_setup(struct AV1_COMP *const cpi);
int av1_cyclic_refresh_get_rdmult(const CYCLIC_REFRESH *cr);
int av1_cyclic_refresh_disable_lf_cdef(struct AV1_COMP *const cpi);
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