145 lines
5.4 KiB
C
145 lines
5.4 KiB
C
/*
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* Copyright (c) 2014 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef VP9_ENCODER_VP9_AQ_CYCLICREFRESH_H_
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#define VP9_ENCODER_VP9_AQ_CYCLICREFRESH_H_
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#include "vpx/vpx_integer.h"
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#include "vp9/common/vp9_blockd.h"
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#include "vp9/encoder/vp9_block.h"
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#include "vp9/encoder/vp9_skin_detection.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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// The segment ids used in cyclic refresh: from base (no boost) to increasing
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// boost (higher delta-qp).
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#define CR_SEGMENT_ID_BASE 0
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#define CR_SEGMENT_ID_BOOST1 1
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#define CR_SEGMENT_ID_BOOST2 2
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// Maximum rate target ratio for setting segment delta-qp.
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#define CR_MAX_RATE_TARGET_RATIO 4.0
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struct CYCLIC_REFRESH {
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// Percentage of blocks per frame that are targeted as candidates
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// for cyclic refresh.
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int percent_refresh;
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// Maximum q-delta as percentage of base q.
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int max_qdelta_perc;
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// Superblock starting index for cycling through the frame.
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int sb_index;
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// Controls how long block will need to wait to be refreshed again, in
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// excess of the cycle time, i.e., in the case of all zero motion, block
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// will be refreshed every (100/percent_refresh + time_for_refresh) frames.
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int time_for_refresh;
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// Target number of (8x8) blocks that are set for delta-q.
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int target_num_seg_blocks;
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// Actual number of (8x8) blocks that were applied delta-q.
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int actual_num_seg1_blocks;
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int actual_num_seg2_blocks;
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// RD mult. parameters for segment 1.
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int rdmult;
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// Cyclic refresh map.
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signed char *map;
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// Map of the last q a block was coded at.
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uint8_t *last_coded_q_map;
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// Thresholds applied to the projected rate/distortion of the coding block,
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// when deciding whether block should be refreshed.
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int64_t thresh_rate_sb;
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int64_t thresh_dist_sb;
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// Threshold applied to the motion vector (in units of 1/8 pel) of the
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// coding block, when deciding whether block should be refreshed.
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int16_t motion_thresh;
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// Rate target ratio to set q delta.
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double rate_ratio_qdelta;
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// Boost factor for rate target ratio, for segment CR_SEGMENT_ID_BOOST2.
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int rate_boost_fac;
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double low_content_avg;
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int qindex_delta[3];
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int reduce_refresh;
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};
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struct VP9_COMP;
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typedef struct CYCLIC_REFRESH CYCLIC_REFRESH;
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CYCLIC_REFRESH *vp9_cyclic_refresh_alloc(int mi_rows, int mi_cols);
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void vp9_cyclic_refresh_free(CYCLIC_REFRESH *cr);
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// Estimate the bits, incorporating the delta-q from segment 1, after encoding
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// the frame.
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int vp9_cyclic_refresh_estimate_bits_at_q(const struct VP9_COMP *cpi,
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double correction_factor);
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// Estimate the bits per mb, for a given q = i and a corresponding delta-q
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// (for segment 1), prior to encoding the frame.
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int vp9_cyclic_refresh_rc_bits_per_mb(const struct VP9_COMP *cpi, int i,
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double correction_factor);
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// Prior to coding a given prediction block, of size bsize at (mi_row, mi_col),
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// check if we should reset the segment_id, and update the cyclic_refresh map
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// and segmentation map.
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void vp9_cyclic_refresh_update_segment(struct VP9_COMP *const cpi,
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MODE_INFO *const mi, int mi_row,
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int mi_col, BLOCK_SIZE bsize,
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int64_t rate, int64_t dist, int skip,
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struct macroblock_plane *const p);
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void vp9_cyclic_refresh_update_sb_postencode(struct VP9_COMP *const cpi,
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const MODE_INFO *const mi,
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int mi_row, int mi_col,
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BLOCK_SIZE bsize);
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// Update the segmentation map, and related quantities: cyclic refresh map,
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// refresh sb_index, and target number of blocks to be refreshed.
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void vp9_cyclic_refresh_update__map(struct VP9_COMP *const cpi);
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// Update the actual number of blocks that were applied the segment delta q.
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void vp9_cyclic_refresh_postencode(struct VP9_COMP *const cpi);
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// Set golden frame update interval, for non-svc 1 pass CBR mode.
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void vp9_cyclic_refresh_set_golden_update(struct VP9_COMP *const cpi);
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// Check if we should not update golden reference, based on past refresh stats.
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void vp9_cyclic_refresh_check_golden_update(struct VP9_COMP *const cpi);
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// Set/update global/frame level refresh parameters.
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void vp9_cyclic_refresh_update_parameters(struct VP9_COMP *const cpi);
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// Setup cyclic background refresh: set delta q and segmentation map.
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void vp9_cyclic_refresh_setup(struct VP9_COMP *const cpi);
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int vp9_cyclic_refresh_get_rdmult(const CYCLIC_REFRESH *cr);
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void vp9_cyclic_refresh_reset_resize(struct VP9_COMP *const cpi);
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static INLINE int cyclic_refresh_segment_id_boosted(int segment_id) {
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return segment_id == CR_SEGMENT_ID_BOOST1 ||
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segment_id == CR_SEGMENT_ID_BOOST2;
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}
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static INLINE int cyclic_refresh_segment_id(int segment_id) {
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if (segment_id == CR_SEGMENT_ID_BOOST1)
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return CR_SEGMENT_ID_BOOST1;
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else if (segment_id == CR_SEGMENT_ID_BOOST2)
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return CR_SEGMENT_ID_BOOST2;
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else
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return CR_SEGMENT_ID_BASE;
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}
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif // VP9_ENCODER_VP9_AQ_CYCLICREFRESH_H_
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