/* * 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 structure holds a valid reference frame type and its temporal distance // from the source frame. typedefstruct { int distance;
MV_REFERENCE_FRAME frame;
} FrameDistPair;
typedefstruct { // Array of structure which holds the global motion parameters for a given // motion model. motion_models[i] holds the parameters for a given motion // model for the ith ransac motion.
MotionModel motion_models[RANSAC_NUM_MOTIONS];
// Pointer to hold inliers from motion model.
uint8_t *segment_map;
} GlobalMotionData;
typedefstruct { // Holds the mapping of each thread to past/future direction. // thread_id_to_dir[i] indicates the direction id (past - 0/future - 1) // assigned to the ith thread.
int8_t thread_id_to_dir[MAX_NUM_THREADS];
// A flag which holds the early exit status based on the speed feature // 'prune_ref_frame_for_gm_search'. early_exit[i] will be set if the speed // feature based early exit happens in the direction 'i'.
int8_t early_exit[MAX_DIRECTIONS];
// Counter for the next reference frame to be processed. // next_frame_to_process[i] will hold the count of next reference frame to be // processed in the direction 'i'.
int8_t next_frame_to_process[MAX_DIRECTIONS];
} GlobalMotionJobInfo;
typedefstruct { // Data related to assigning jobs for global motion multi-threading.
GlobalMotionJobInfo job_info;
#if CONFIG_MULTITHREAD // Mutex lock used while dispatching jobs.
pthread_mutex_t *mutex_; #endif
// Initialized to false, set to true by the worker thread that encounters an // error in order to abort the processing of other worker threads. bool gm_mt_exit;
} AV1GlobalMotionSync;
// Criteria for accepting a global motion model staticconstdouble erroradv_tr = 0.65; staticconstdouble erroradv_prod_tr = 20000;
// Early exit threshold for global motion refinement // This is set slightly higher than erroradv_tr, as a compromise between // two factors: // // 1) By rejecting un-promising models early, we can reduce the encode time // spent trying to refine them // // 2) When we refine a model, its error may decrease to below the acceptance // threshold even if the model is initially above the threshold staticconstdouble erroradv_early_tr = 0.70;
int av1_is_enough_erroradvantage(double best_erroradvantage, int params_cost);
void av1_compute_feature_segmentation_map(uint8_t *segment_map, int width, int height, int *inliers, int num_inliers);
int64_t av1_segmented_frame_error(int use_hbd, int bd, const uint8_t *ref, int ref_stride, uint8_t *dst, int dst_stride, int p_width, int p_height,
uint8_t *segment_map, int segment_map_stride);
// Returns the warp error between "dst" and the result of applying the // motion params that result from fine-tuning "wm" to "ref". Note that "wm" is // modified in place.
int64_t av1_refine_integerized_param(
WarpedMotionParams *wm, TransformationType wmtype, int use_hbd, int bd,
uint8_t *ref, int r_width, int r_height, int r_stride, uint8_t *dst, int d_width, int d_height, int d_stride, int n_refinements,
int64_t ref_frame_error, uint8_t *segment_map, int segment_map_stride);
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