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Diffstat (limited to 'media/libvpx/libvpx/vp9/encoder/vp9_aq_cyclicrefresh.h')
| -rw-r--r-- | media/libvpx/libvpx/vp9/encoder/vp9_aq_cyclicrefresh.h | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/media/libvpx/libvpx/vp9/encoder/vp9_aq_cyclicrefresh.h b/media/libvpx/libvpx/vp9/encoder/vp9_aq_cyclicrefresh.h new file mode 100644 index 0000000000..c74cee4743 --- /dev/null +++ b/media/libvpx/libvpx/vp9/encoder/vp9_aq_cyclicrefresh.h @@ -0,0 +1,147 @@ +/* + * Copyright (c) 2014 The WebM project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +#ifndef VPX_VP9_ENCODER_VP9_AQ_CYCLICREFRESH_H_ +#define VPX_VP9_ENCODER_VP9_AQ_CYCLICREFRESH_H_ + +#include "vpx/vpx_integer.h" +#include "vp9/common/vp9_blockd.h" +#include "vp9/encoder/vp9_block.h" +#include "vp9/encoder/vp9_skin_detection.h" + +#ifdef __cplusplus +extern "C" { +#endif + +// 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 + +struct CYCLIC_REFRESH { + // Percentage of blocks per frame that are targeted as candidates + // for cyclic refresh. + int percent_refresh; + // Maximum q-delta as percentage of base q. + int max_qdelta_perc; + // Superblock starting index for cycling through the frame. + int 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 (8x8) blocks that are set for delta-q. + int target_num_seg_blocks; + // Actual number of (8x8) blocks that were applied delta-q. + int actual_num_seg1_blocks; + int actual_num_seg2_blocks; + // RD mult. parameters for segment 1. + int rdmult; + // Cyclic refresh map. + signed char *map; + // Map of the last q a block was coded at. + uint8_t *last_coded_q_map; + // Thresholds applied to the projected rate/distortion of the coding block, + // when deciding whether block should be refreshed. + int64_t thresh_rate_sb; + 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; + // Boost factor for rate target ratio, for segment CR_SEGMENT_ID_BOOST2. + int rate_boost_fac; + double low_content_avg; + int qindex_delta[3]; + int reduce_refresh; + double weight_segment; + int apply_cyclic_refresh; + int counter_encode_maxq_scene_change; + int skip_flat_static_blocks; + int content_mode; +}; + +struct VP9_COMP; + +typedef struct CYCLIC_REFRESH CYCLIC_REFRESH; + +CYCLIC_REFRESH *vp9_cyclic_refresh_alloc(int mi_rows, int mi_cols); + +void vp9_cyclic_refresh_free(CYCLIC_REFRESH *cr); + +// Estimate the bits, incorporating the delta-q from segment 1, after encoding +// the frame. +int vp9_cyclic_refresh_estimate_bits_at_q(const struct VP9_COMP *cpi, + double correction_factor); + +// Estimate the bits per mb, for a given q = i and a corresponding delta-q +// (for segment 1), prior to encoding the frame. +int vp9_cyclic_refresh_rc_bits_per_mb(const struct VP9_COMP *cpi, int i, + double correction_factor); + +// Prior to coding a given prediction block, of size bsize at (mi_row, mi_col), +// check if we should reset the segment_id, and update the cyclic_refresh map +// and segmentation map. +void vp9_cyclic_refresh_update_segment(struct VP9_COMP *const cpi, + MODE_INFO *const mi, int mi_row, + int mi_col, BLOCK_SIZE bsize, + int64_t rate, int64_t dist, int skip, + struct macroblock_plane *const p); + +void vp9_cyclic_refresh_update_sb_postencode(struct VP9_COMP *const cpi, + const MODE_INFO *const mi, + int mi_row, int mi_col, + BLOCK_SIZE bsize); + +// From the just encoded frame: update the actual number of blocks that were +// applied the segment delta q, and the amount of low motion in the frame. +// Also check conditions for forcing golden update, or preventing golden +// update if the period is up. +void vp9_cyclic_refresh_postencode(struct VP9_COMP *const cpi); + +// Set golden frame update interval, for non-svc 1 pass CBR mode. +void vp9_cyclic_refresh_set_golden_update(struct VP9_COMP *const cpi); + +// Set/update global/frame level refresh parameters. +void vp9_cyclic_refresh_update_parameters(struct VP9_COMP *const cpi); + +// Setup cyclic background refresh: set delta q and segmentation map. +void vp9_cyclic_refresh_setup(struct VP9_COMP *const cpi); + +int vp9_cyclic_refresh_get_rdmult(const CYCLIC_REFRESH *cr); + +void vp9_cyclic_refresh_reset_resize(struct VP9_COMP *const cpi); + +static INLINE int cyclic_refresh_segment_id_boosted(int segment_id) { + return segment_id == CR_SEGMENT_ID_BOOST1 || + segment_id == CR_SEGMENT_ID_BOOST2; +} + +static INLINE int cyclic_refresh_segment_id(int segment_id) { + if (segment_id == CR_SEGMENT_ID_BOOST1) + return CR_SEGMENT_ID_BOOST1; + else if (segment_id == CR_SEGMENT_ID_BOOST2) + return CR_SEGMENT_ID_BOOST2; + else + return CR_SEGMENT_ID_BASE; +} + +void vp9_cyclic_refresh_limit_q(const struct VP9_COMP *cpi, int *q); + +#ifdef __cplusplus +} // extern "C" +#endif + +#endif // VPX_VP9_ENCODER_VP9_AQ_CYCLICREFRESH_H_ |