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1 /*
2  *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
3  *
4  *  Use of this source code is governed by a BSD-style license
5  *  that can be found in the LICENSE file in the root of the source
6  *  tree. An additional intellectual property rights grant can be found
7  *  in the file PATENTS.  All contributing project authors may
8  *  be found in the AUTHORS file in the root of the source tree.
9  */
10 
11 #ifndef VP9_ENCODER_VP9_ENCODER_H_
12 #define VP9_ENCODER_VP9_ENCODER_H_
13 
14 #include <stdio.h>
15 
16 #include "./vpx_config.h"
17 #include "vpx/internal/vpx_codec_internal.h"
18 #include "vpx/vp8cx.h"
19 #if CONFIG_INTERNAL_STATS
20 #include "vpx_dsp/ssim.h"
21 #endif
22 #include "vpx_dsp/variance.h"
23 #include "vpx_ports/system_state.h"
24 #include "vpx_util/vpx_thread.h"
25 
26 #include "vp9/common/vp9_alloccommon.h"
27 #include "vp9/common/vp9_ppflags.h"
28 #include "vp9/common/vp9_entropymode.h"
29 #include "vp9/common/vp9_thread_common.h"
30 #include "vp9/common/vp9_onyxc_int.h"
31 
32 #include "vp9/encoder/vp9_alt_ref_aq.h"
33 #include "vp9/encoder/vp9_aq_cyclicrefresh.h"
34 #include "vp9/encoder/vp9_context_tree.h"
35 #include "vp9/encoder/vp9_encodemb.h"
36 #include "vp9/encoder/vp9_ethread.h"
37 #include "vp9/encoder/vp9_firstpass.h"
38 #include "vp9/encoder/vp9_job_queue.h"
39 #include "vp9/encoder/vp9_lookahead.h"
40 #include "vp9/encoder/vp9_mbgraph.h"
41 #include "vp9/encoder/vp9_mcomp.h"
42 #include "vp9/encoder/vp9_noise_estimate.h"
43 #include "vp9/encoder/vp9_quantize.h"
44 #include "vp9/encoder/vp9_ratectrl.h"
45 #include "vp9/encoder/vp9_rd.h"
46 #include "vp9/encoder/vp9_speed_features.h"
47 #include "vp9/encoder/vp9_svc_layercontext.h"
48 #include "vp9/encoder/vp9_tokenize.h"
49 
50 #if CONFIG_VP9_TEMPORAL_DENOISING
51 #include "vp9/encoder/vp9_denoiser.h"
52 #endif
53 
54 #ifdef __cplusplus
55 extern "C" {
56 #endif
57 
58 // vp9 uses 10,000,000 ticks/second as time stamp
59 #define TICKS_PER_SEC 10000000
60 
61 typedef struct {
62   int nmvjointcost[MV_JOINTS];
63   int nmvcosts[2][MV_VALS];
64   int nmvcosts_hp[2][MV_VALS];
65 
66   vpx_prob segment_pred_probs[PREDICTION_PROBS];
67 
68   unsigned char *last_frame_seg_map_copy;
69 
70   // 0 = Intra, Last, GF, ARF
71   signed char last_ref_lf_deltas[MAX_REF_LF_DELTAS];
72   // 0 = ZERO_MV, MV
73   signed char last_mode_lf_deltas[MAX_MODE_LF_DELTAS];
74 
75   FRAME_CONTEXT fc;
76 } CODING_CONTEXT;
77 
78 typedef enum {
79   // encode_breakout is disabled.
80   ENCODE_BREAKOUT_DISABLED = 0,
81   // encode_breakout is enabled.
82   ENCODE_BREAKOUT_ENABLED = 1,
83   // encode_breakout is enabled with small max_thresh limit.
84   ENCODE_BREAKOUT_LIMITED = 2
85 } ENCODE_BREAKOUT_TYPE;
86 
87 typedef enum {
88   NORMAL = 0,
89   FOURFIVE = 1,
90   THREEFIVE = 2,
91   ONETWO = 3
92 } VPX_SCALING;
93 
94 typedef enum {
95   // Good Quality Fast Encoding. The encoder balances quality with the amount of
96   // time it takes to encode the output. Speed setting controls how fast.
97   GOOD,
98 
99   // The encoder places priority on the quality of the output over encoding
100   // speed. The output is compressed at the highest possible quality. This
101   // option takes the longest amount of time to encode. Speed setting ignored.
102   BEST,
103 
104   // Realtime/Live Encoding. This mode is optimized for realtime encoding (for
105   // example, capturing a television signal or feed from a live camera). Speed
106   // setting controls how fast.
107   REALTIME
108 } MODE;
109 
110 typedef enum {
111   FRAMEFLAGS_KEY = 1 << 0,
112   FRAMEFLAGS_GOLDEN = 1 << 1,
113   FRAMEFLAGS_ALTREF = 1 << 2,
114 } FRAMETYPE_FLAGS;
115 
116 typedef enum {
117   NO_AQ = 0,
118   VARIANCE_AQ = 1,
119   COMPLEXITY_AQ = 2,
120   CYCLIC_REFRESH_AQ = 3,
121   EQUATOR360_AQ = 4,
122   // AQ based on lookahead temporal
123   // variance (only valid for altref frames)
124   LOOKAHEAD_AQ = 5,
125   AQ_MODE_COUNT  // This should always be the last member of the enum
126 } AQ_MODE;
127 
128 typedef enum {
129   RESIZE_NONE = 0,    // No frame resizing allowed (except for SVC).
130   RESIZE_FIXED = 1,   // All frames are coded at the specified dimension.
131   RESIZE_DYNAMIC = 2  // Coded size of each frame is determined by the codec.
132 } RESIZE_TYPE;
133 
134 typedef enum {
135   kInvalid = 0,
136   kLowSadLowSumdiff = 1,
137   kLowSadHighSumdiff = 2,
138   kHighSadLowSumdiff = 3,
139   kHighSadHighSumdiff = 4,
140   kLowVarHighSumdiff = 5,
141 } CONTENT_STATE_SB;
142 
143 typedef struct VP9EncoderConfig {
144   BITSTREAM_PROFILE profile;
145   vpx_bit_depth_t bit_depth;     // Codec bit-depth.
146   int width;                     // width of data passed to the compressor
147   int height;                    // height of data passed to the compressor
148   unsigned int input_bit_depth;  // Input bit depth.
149   double init_framerate;         // set to passed in framerate
150   int64_t target_bandwidth;      // bandwidth to be used in bits per second
151 
152   int noise_sensitivity;  // pre processing blur: recommendation 0
153   int sharpness;          // sharpening output: recommendation 0:
154   int speed;
155   // maximum allowed bitrate for any intra frame in % of bitrate target.
156   unsigned int rc_max_intra_bitrate_pct;
157   // maximum allowed bitrate for any inter frame in % of bitrate target.
158   unsigned int rc_max_inter_bitrate_pct;
159   // percent of rate boost for golden frame in CBR mode.
160   unsigned int gf_cbr_boost_pct;
161 
162   MODE mode;
163   int pass;
164 
165   // Key Framing Operations
166   int auto_key;  // autodetect cut scenes and set the keyframes
167   int key_freq;  // maximum distance to key frame.
168 
169   int lag_in_frames;  // how many frames lag before we start encoding
170 
171   // ----------------------------------------------------------------
172   // DATARATE CONTROL OPTIONS
173 
174   // vbr, cbr, constrained quality or constant quality
175   enum vpx_rc_mode rc_mode;
176 
177   // buffer targeting aggressiveness
178   int under_shoot_pct;
179   int over_shoot_pct;
180 
181   // buffering parameters
182   int64_t starting_buffer_level_ms;
183   int64_t optimal_buffer_level_ms;
184   int64_t maximum_buffer_size_ms;
185 
186   // Frame drop threshold.
187   int drop_frames_water_mark;
188 
189   // controlling quality
190   int fixed_q;
191   int worst_allowed_q;
192   int best_allowed_q;
193   int cq_level;
194   AQ_MODE aq_mode;  // Adaptive Quantization mode
195 
196   // Special handling of Adaptive Quantization for AltRef frames
197   int alt_ref_aq;
198 
199   // Internal frame size scaling.
200   RESIZE_TYPE resize_mode;
201   int scaled_frame_width;
202   int scaled_frame_height;
203 
204   // Enable feature to reduce the frame quantization every x frames.
205   int frame_periodic_boost;
206 
207   // two pass datarate control
208   int two_pass_vbrbias;  // two pass datarate control tweaks
209   int two_pass_vbrmin_section;
210   int two_pass_vbrmax_section;
211   // END DATARATE CONTROL OPTIONS
212   // ----------------------------------------------------------------
213 
214   // Spatial and temporal scalability.
215   int ss_number_layers;  // Number of spatial layers.
216   int ts_number_layers;  // Number of temporal layers.
217   // Bitrate allocation for spatial layers.
218   int layer_target_bitrate[VPX_MAX_LAYERS];
219   int ss_target_bitrate[VPX_SS_MAX_LAYERS];
220   int ss_enable_auto_arf[VPX_SS_MAX_LAYERS];
221   // Bitrate allocation (CBR mode) and framerate factor, for temporal layers.
222   int ts_rate_decimator[VPX_TS_MAX_LAYERS];
223 
224   int enable_auto_arf;
225 
226   int encode_breakout;  // early breakout : for video conf recommend 800
227 
228   /* Bitfield defining the error resiliency features to enable.
229    * Can provide decodable frames after losses in previous
230    * frames and decodable partitions after losses in the same frame.
231    */
232   unsigned int error_resilient_mode;
233 
234   /* Bitfield defining the parallel decoding mode where the
235    * decoding in successive frames may be conducted in parallel
236    * just by decoding the frame headers.
237    */
238   unsigned int frame_parallel_decoding_mode;
239 
240   int arnr_max_frames;
241   int arnr_strength;
242 
243   int min_gf_interval;
244   int max_gf_interval;
245 
246   int tile_columns;
247   int tile_rows;
248 
249   int max_threads;
250 
251   unsigned int target_level;
252 
253   vpx_fixed_buf_t two_pass_stats_in;
254   struct vpx_codec_pkt_list *output_pkt_list;
255 
256 #if CONFIG_FP_MB_STATS
257   vpx_fixed_buf_t firstpass_mb_stats_in;
258 #endif
259 
260   vp8e_tuning tuning;
261   vp9e_tune_content content;
262 #if CONFIG_VP9_HIGHBITDEPTH
263   int use_highbitdepth;
264 #endif
265   vpx_color_space_t color_space;
266   vpx_color_range_t color_range;
267   int render_width;
268   int render_height;
269   VP9E_TEMPORAL_LAYERING_MODE temporal_layering_mode;
270 
271   int row_mt;
272   unsigned int motion_vector_unit_test;
273 } VP9EncoderConfig;
274 
is_lossless_requested(const VP9EncoderConfig * cfg)275 static INLINE int is_lossless_requested(const VP9EncoderConfig *cfg) {
276   return cfg->best_allowed_q == 0 && cfg->worst_allowed_q == 0;
277 }
278 
279 // TODO(jingning) All spatially adaptive variables should go to TileDataEnc.
280 typedef struct TileDataEnc {
281   TileInfo tile_info;
282   int thresh_freq_fact[BLOCK_SIZES][MAX_MODES];
283   int mode_map[BLOCK_SIZES][MAX_MODES];
284   FIRSTPASS_DATA fp_data;
285   VP9RowMTSync row_mt_sync;
286 
287   // Used for adaptive_rd_thresh with row multithreading
288   int *row_base_thresh_freq_fact;
289 } TileDataEnc;
290 
291 typedef struct RowMTInfo {
292   JobQueueHandle job_queue_hdl;
293 #if CONFIG_MULTITHREAD
294   pthread_mutex_t job_mutex;
295 #endif
296 } RowMTInfo;
297 
298 typedef struct {
299   TOKENEXTRA *start;
300   TOKENEXTRA *stop;
301   unsigned int count;
302 } TOKENLIST;
303 
304 typedef struct MultiThreadHandle {
305   int allocated_tile_rows;
306   int allocated_tile_cols;
307   int allocated_vert_unit_rows;
308 
309   // Frame level params
310   int num_tile_vert_sbs[MAX_NUM_TILE_ROWS];
311 
312   // Job Queue structure and handles
313   JobQueue *job_queue;
314 
315   int jobs_per_tile_col;
316 
317   RowMTInfo row_mt_info[MAX_NUM_TILE_COLS];
318   int thread_id_to_tile_id[MAX_NUM_THREADS];  // Mapping of threads to tiles
319 } MultiThreadHandle;
320 
321 typedef struct RD_COUNTS {
322   vp9_coeff_count coef_counts[TX_SIZES][PLANE_TYPES];
323   int64_t comp_pred_diff[REFERENCE_MODES];
324   int64_t filter_diff[SWITCHABLE_FILTER_CONTEXTS];
325 } RD_COUNTS;
326 
327 typedef struct ThreadData {
328   MACROBLOCK mb;
329   RD_COUNTS rd_counts;
330   FRAME_COUNTS *counts;
331 
332   PICK_MODE_CONTEXT *leaf_tree;
333   PC_TREE *pc_tree;
334   PC_TREE *pc_root;
335 } ThreadData;
336 
337 struct EncWorkerData;
338 
339 typedef struct ActiveMap {
340   int enabled;
341   int update;
342   unsigned char *map;
343 } ActiveMap;
344 
345 typedef enum { Y, U, V, ALL } STAT_TYPE;
346 
347 typedef struct IMAGE_STAT {
348   double stat[ALL + 1];
349   double worst;
350 } ImageStat;
351 
352 // Kf noise filtering currently disabled by default in build.
353 // #define ENABLE_KF_DENOISE 1
354 
355 #define CPB_WINDOW_SIZE 4
356 #define FRAME_WINDOW_SIZE 128
357 #define SAMPLE_RATE_GRACE_P 0.015
358 #define VP9_LEVELS 14
359 
360 typedef enum {
361   LEVEL_UNKNOWN = 0,
362   LEVEL_1 = 10,
363   LEVEL_1_1 = 11,
364   LEVEL_2 = 20,
365   LEVEL_2_1 = 21,
366   LEVEL_3 = 30,
367   LEVEL_3_1 = 31,
368   LEVEL_4 = 40,
369   LEVEL_4_1 = 41,
370   LEVEL_5 = 50,
371   LEVEL_5_1 = 51,
372   LEVEL_5_2 = 52,
373   LEVEL_6 = 60,
374   LEVEL_6_1 = 61,
375   LEVEL_6_2 = 62,
376   LEVEL_MAX = 255
377 } VP9_LEVEL;
378 
379 typedef struct {
380   VP9_LEVEL level;
381   uint64_t max_luma_sample_rate;
382   uint32_t max_luma_picture_size;
383   double average_bitrate;  // in kilobits per second
384   double max_cpb_size;     // in kilobits
385   double compression_ratio;
386   uint8_t max_col_tiles;
387   uint32_t min_altref_distance;
388   uint8_t max_ref_frame_buffers;
389 } Vp9LevelSpec;
390 
391 extern const Vp9LevelSpec vp9_level_defs[VP9_LEVELS];
392 
393 typedef struct {
394   int64_t ts;  // timestamp
395   uint32_t luma_samples;
396   uint32_t size;  // in bytes
397 } FrameRecord;
398 
399 typedef struct {
400   FrameRecord buf[FRAME_WINDOW_SIZE];
401   uint8_t start;
402   uint8_t len;
403 } FrameWindowBuffer;
404 
405 typedef struct {
406   uint8_t seen_first_altref;
407   uint32_t frames_since_last_altref;
408   uint64_t total_compressed_size;
409   uint64_t total_uncompressed_size;
410   double time_encoded;  // in seconds
411   FrameWindowBuffer frame_window_buffer;
412   int ref_refresh_map;
413 } Vp9LevelStats;
414 
415 typedef struct {
416   Vp9LevelStats level_stats;
417   Vp9LevelSpec level_spec;
418 } Vp9LevelInfo;
419 
420 typedef enum {
421   BITRATE_TOO_LARGE = 0,
422   LUMA_PIC_SIZE_TOO_LARGE = 1,
423   LUMA_SAMPLE_RATE_TOO_LARGE = 2,
424   CPB_TOO_LARGE = 3,
425   COMPRESSION_RATIO_TOO_SMALL = 4,
426   TOO_MANY_COLUMN_TILE = 5,
427   ALTREF_DIST_TOO_SMALL = 6,
428   TOO_MANY_REF_BUFFER = 7,
429   TARGET_LEVEL_FAIL_IDS = 8
430 } TARGET_LEVEL_FAIL_ID;
431 
432 typedef struct {
433   int8_t level_index;
434   uint8_t rc_config_updated;
435   uint8_t fail_flag;
436   int max_frame_size;   // in bits
437   double max_cpb_size;  // in bits
438 } LevelConstraint;
439 
440 typedef struct ARNRFilterData {
441   YV12_BUFFER_CONFIG *frames[MAX_LAG_BUFFERS];
442   int strength;
443   int frame_count;
444   int alt_ref_index;
445   struct scale_factors sf;
446 } ARNRFilterData;
447 
448 typedef struct VP9_COMP {
449   QUANTS quants;
450   ThreadData td;
451   MB_MODE_INFO_EXT *mbmi_ext_base;
452   DECLARE_ALIGNED(16, int16_t, y_dequant[QINDEX_RANGE][8]);
453   DECLARE_ALIGNED(16, int16_t, uv_dequant[QINDEX_RANGE][8]);
454   VP9_COMMON common;
455   VP9EncoderConfig oxcf;
456   struct lookahead_ctx *lookahead;
457   struct lookahead_entry *alt_ref_source;
458 
459   YV12_BUFFER_CONFIG *Source;
460   YV12_BUFFER_CONFIG *Last_Source;  // NULL for first frame and alt_ref frames
461   YV12_BUFFER_CONFIG *un_scaled_source;
462   YV12_BUFFER_CONFIG scaled_source;
463   YV12_BUFFER_CONFIG *unscaled_last_source;
464   YV12_BUFFER_CONFIG scaled_last_source;
465 #ifdef ENABLE_KF_DENOISE
466   YV12_BUFFER_CONFIG raw_unscaled_source;
467   YV12_BUFFER_CONFIG raw_scaled_source;
468 #endif
469   YV12_BUFFER_CONFIG *raw_source_frame;
470 
471   TileDataEnc *tile_data;
472   int allocated_tiles;  // Keep track of memory allocated for tiles.
473 
474   // For a still frame, this flag is set to 1 to skip partition search.
475   int partition_search_skippable_frame;
476 
477   int scaled_ref_idx[MAX_REF_FRAMES];
478   int lst_fb_idx;
479   int gld_fb_idx;
480   int alt_fb_idx;
481 
482   int refresh_last_frame;
483   int refresh_golden_frame;
484   int refresh_alt_ref_frame;
485 
486   int ext_refresh_frame_flags_pending;
487   int ext_refresh_last_frame;
488   int ext_refresh_golden_frame;
489   int ext_refresh_alt_ref_frame;
490 
491   int ext_refresh_frame_context_pending;
492   int ext_refresh_frame_context;
493 
494   YV12_BUFFER_CONFIG last_frame_uf;
495 
496   TOKENEXTRA *tile_tok[4][1 << 6];
497   uint32_t tok_count[4][1 << 6];
498   TOKENLIST *tplist[4][1 << 6];
499 
500   // Ambient reconstruction err target for force key frames
501   int64_t ambient_err;
502 
503   RD_OPT rd;
504 
505   CODING_CONTEXT coding_context;
506 
507   int *nmvcosts[2];
508   int *nmvcosts_hp[2];
509   int *nmvsadcosts[2];
510   int *nmvsadcosts_hp[2];
511 
512   int64_t last_time_stamp_seen;
513   int64_t last_end_time_stamp_seen;
514   int64_t first_time_stamp_ever;
515 
516   RATE_CONTROL rc;
517   double framerate;
518 
519   int interp_filter_selected[MAX_REF_FRAMES][SWITCHABLE];
520 
521   struct vpx_codec_pkt_list *output_pkt_list;
522 
523   MBGRAPH_FRAME_STATS mbgraph_stats[MAX_LAG_BUFFERS];
524   int mbgraph_n_frames;  // number of frames filled in the above
525   int static_mb_pct;     // % forced skip mbs by segmentation
526   int ref_frame_flags;
527 
528   SPEED_FEATURES sf;
529 
530   uint32_t max_mv_magnitude;
531   int mv_step_param;
532 
533   int allow_comp_inter_inter;
534 
535   // Default value is 1. From first pass stats, encode_breakout may be disabled.
536   ENCODE_BREAKOUT_TYPE allow_encode_breakout;
537 
538   // Get threshold from external input. A suggested threshold is 800 for HD
539   // clips, and 300 for < HD clips.
540   int encode_breakout;
541 
542   uint8_t *segmentation_map;
543 
544   // segment threashold for encode breakout
545   int segment_encode_breakout[MAX_SEGMENTS];
546 
547   CYCLIC_REFRESH *cyclic_refresh;
548   ActiveMap active_map;
549 
550   fractional_mv_step_fp *find_fractional_mv_step;
551   vp9_full_search_fn_t full_search_sad;
552   vp9_diamond_search_fn_t diamond_search_sad;
553   vp9_variance_fn_ptr_t fn_ptr[BLOCK_SIZES];
554   uint64_t time_receive_data;
555   uint64_t time_compress_data;
556   uint64_t time_pick_lpf;
557   uint64_t time_encode_sb_row;
558 
559 #if CONFIG_FP_MB_STATS
560   int use_fp_mb_stats;
561 #endif
562 
563   TWO_PASS twopass;
564 
565   // Force recalculation of segment_ids for each mode info
566   uint8_t force_update_segmentation;
567 
568   YV12_BUFFER_CONFIG alt_ref_buffer;
569 
570   // class responsible for adaptive
571   // quantization of altref frames
572   struct ALT_REF_AQ *alt_ref_aq;
573 
574 #if CONFIG_INTERNAL_STATS
575   unsigned int mode_chosen_counts[MAX_MODES];
576 
577   int count;
578   uint64_t total_sq_error;
579   uint64_t total_samples;
580   ImageStat psnr;
581 
582   uint64_t totalp_sq_error;
583   uint64_t totalp_samples;
584   ImageStat psnrp;
585 
586   double total_blockiness;
587   double worst_blockiness;
588 
589   int bytes;
590   double summed_quality;
591   double summed_weights;
592   double summedp_quality;
593   double summedp_weights;
594   unsigned int tot_recode_hits;
595   double worst_ssim;
596 
597   ImageStat ssimg;
598   ImageStat fastssim;
599   ImageStat psnrhvs;
600 
601   int b_calculate_ssimg;
602   int b_calculate_blockiness;
603 
604   int b_calculate_consistency;
605 
606   double total_inconsistency;
607   double worst_consistency;
608   Ssimv *ssim_vars;
609   Metrics metrics;
610 #endif
611   int b_calculate_psnr;
612 
613   int droppable;
614 
615   int initial_width;
616   int initial_height;
617   int initial_mbs;  // Number of MBs in the full-size frame; to be used to
618                     // normalize the firstpass stats. This will differ from the
619                     // number of MBs in the current frame when the frame is
620                     // scaled.
621 
622   int use_svc;
623 
624   SVC svc;
625 
626   // Store frame variance info in SOURCE_VAR_BASED_PARTITION search type.
627   diff *source_diff_var;
628   // The threshold used in SOURCE_VAR_BASED_PARTITION search type.
629   unsigned int source_var_thresh;
630   int frames_till_next_var_check;
631 
632   int frame_flags;
633 
634   search_site_config ss_cfg;
635 
636   int mbmode_cost[INTRA_MODES];
637   unsigned int inter_mode_cost[INTER_MODE_CONTEXTS][INTER_MODES];
638   int intra_uv_mode_cost[FRAME_TYPES][INTRA_MODES][INTRA_MODES];
639   int y_mode_costs[INTRA_MODES][INTRA_MODES][INTRA_MODES];
640   int switchable_interp_costs[SWITCHABLE_FILTER_CONTEXTS][SWITCHABLE_FILTERS];
641   int partition_cost[PARTITION_CONTEXTS][PARTITION_TYPES];
642 
643   int multi_arf_allowed;
644   int multi_arf_enabled;
645   int multi_arf_last_grp_enabled;
646 
647 #if CONFIG_VP9_TEMPORAL_DENOISING
648   VP9_DENOISER denoiser;
649 #endif
650 
651   int resize_pending;
652   RESIZE_STATE resize_state;
653   int external_resize;
654   int resize_scale_num;
655   int resize_scale_den;
656   int resize_avg_qp;
657   int resize_buffer_underflow;
658   int resize_count;
659 
660   int use_skin_detection;
661 
662   int target_level;
663 
664   NOISE_ESTIMATE noise_estimate;
665 
666   // Count on how many consecutive times a block uses small/zeromv for encoding.
667   uint8_t *consec_zero_mv;
668 
669   // VAR_BASED_PARTITION thresholds
670   // 0 - threshold_64x64; 1 - threshold_32x32;
671   // 2 - threshold_16x16; 3 - vbp_threshold_8x8;
672   int64_t vbp_thresholds[4];
673   int64_t vbp_threshold_minmax;
674   int64_t vbp_threshold_sad;
675   // Threshold used for partition copy
676   int64_t vbp_threshold_copy;
677   BLOCK_SIZE vbp_bsize_min;
678 
679   // Multi-threading
680   int num_workers;
681   VPxWorker *workers;
682   struct EncWorkerData *tile_thr_data;
683   VP9LfSync lf_row_sync;
684   struct VP9BitstreamWorkerData *vp9_bitstream_worker_data;
685 
686   int keep_level_stats;
687   Vp9LevelInfo level_info;
688   MultiThreadHandle multi_thread_ctxt;
689   void (*row_mt_sync_read_ptr)(VP9RowMTSync *const, int, int);
690   void (*row_mt_sync_write_ptr)(VP9RowMTSync *const, int, int, const int);
691   ARNRFilterData arnr_filter_data;
692 
693   int row_mt;
694   unsigned int row_mt_bit_exact;
695 
696   // Previous Partition Info
697   BLOCK_SIZE *prev_partition;
698   int8_t *prev_segment_id;
699   // Used to save the status of whether a block has a low variance in
700   // choose_partitioning. 0 for 64x64, 1~2 for 64x32, 3~4 for 32x64, 5~8 for
701   // 32x32, 9~24 for 16x16.
702   // This is for the last frame and is copied to the current frame
703   // when partition copy happens.
704   uint8_t *prev_variance_low;
705   uint8_t *copied_frame_cnt;
706   uint8_t max_copied_frame;
707   // If the last frame is dropped, we don't copy partition.
708   uint8_t last_frame_dropped;
709 
710   // For each superblock: keeps track of the last time (in frame distance) the
711   // the superblock did not have low source sad.
712   uint8_t *content_state_sb_fd;
713 
714   int compute_source_sad_onepass;
715 
716   LevelConstraint level_constraint;
717 } VP9_COMP;
718 
719 void vp9_initialize_enc(void);
720 
721 struct VP9_COMP *vp9_create_compressor(VP9EncoderConfig *oxcf,
722                                        BufferPool *const pool);
723 void vp9_remove_compressor(VP9_COMP *cpi);
724 
725 void vp9_change_config(VP9_COMP *cpi, const VP9EncoderConfig *oxcf);
726 
727 // receive a frames worth of data. caller can assume that a copy of this
728 // frame is made and not just a copy of the pointer..
729 int vp9_receive_raw_frame(VP9_COMP *cpi, vpx_enc_frame_flags_t frame_flags,
730                           YV12_BUFFER_CONFIG *sd, int64_t time_stamp,
731                           int64_t end_time_stamp);
732 
733 int vp9_get_compressed_data(VP9_COMP *cpi, unsigned int *frame_flags,
734                             size_t *size, uint8_t *dest, int64_t *time_stamp,
735                             int64_t *time_end, int flush);
736 
737 int vp9_get_preview_raw_frame(VP9_COMP *cpi, YV12_BUFFER_CONFIG *dest,
738                               vp9_ppflags_t *flags);
739 
740 int vp9_use_as_reference(VP9_COMP *cpi, int ref_frame_flags);
741 
742 void vp9_update_reference(VP9_COMP *cpi, int ref_frame_flags);
743 
744 int vp9_copy_reference_enc(VP9_COMP *cpi, VP9_REFFRAME ref_frame_flag,
745                            YV12_BUFFER_CONFIG *sd);
746 
747 int vp9_set_reference_enc(VP9_COMP *cpi, VP9_REFFRAME ref_frame_flag,
748                           YV12_BUFFER_CONFIG *sd);
749 
750 int vp9_update_entropy(VP9_COMP *cpi, int update);
751 
752 int vp9_set_active_map(VP9_COMP *cpi, unsigned char *map, int rows, int cols);
753 
754 int vp9_get_active_map(VP9_COMP *cpi, unsigned char *map, int rows, int cols);
755 
756 int vp9_set_internal_size(VP9_COMP *cpi, VPX_SCALING horiz_mode,
757                           VPX_SCALING vert_mode);
758 
759 int vp9_set_size_literal(VP9_COMP *cpi, unsigned int width,
760                          unsigned int height);
761 
762 void vp9_set_svc(VP9_COMP *cpi, int use_svc);
763 
764 int vp9_get_quantizer(struct VP9_COMP *cpi);
765 
frame_is_kf_gf_arf(const VP9_COMP * cpi)766 static INLINE int frame_is_kf_gf_arf(const VP9_COMP *cpi) {
767   return frame_is_intra_only(&cpi->common) || cpi->refresh_alt_ref_frame ||
768          (cpi->refresh_golden_frame && !cpi->rc.is_src_frame_alt_ref);
769 }
770 
get_ref_frame_map_idx(const VP9_COMP * cpi,MV_REFERENCE_FRAME ref_frame)771 static INLINE int get_ref_frame_map_idx(const VP9_COMP *cpi,
772                                         MV_REFERENCE_FRAME ref_frame) {
773   if (ref_frame == LAST_FRAME) {
774     return cpi->lst_fb_idx;
775   } else if (ref_frame == GOLDEN_FRAME) {
776     return cpi->gld_fb_idx;
777   } else {
778     return cpi->alt_fb_idx;
779   }
780 }
781 
get_ref_frame_buf_idx(const VP9_COMP * const cpi,int ref_frame)782 static INLINE int get_ref_frame_buf_idx(const VP9_COMP *const cpi,
783                                         int ref_frame) {
784   const VP9_COMMON *const cm = &cpi->common;
785   const int map_idx = get_ref_frame_map_idx(cpi, ref_frame);
786   return (map_idx != INVALID_IDX) ? cm->ref_frame_map[map_idx] : INVALID_IDX;
787 }
788 
get_ref_frame_buffer(VP9_COMP * cpi,MV_REFERENCE_FRAME ref_frame)789 static INLINE YV12_BUFFER_CONFIG *get_ref_frame_buffer(
790     VP9_COMP *cpi, MV_REFERENCE_FRAME ref_frame) {
791   VP9_COMMON *const cm = &cpi->common;
792   const int buf_idx = get_ref_frame_buf_idx(cpi, ref_frame);
793   return buf_idx != INVALID_IDX ? &cm->buffer_pool->frame_bufs[buf_idx].buf
794                                 : NULL;
795 }
796 
get_token_alloc(int mb_rows,int mb_cols)797 static INLINE int get_token_alloc(int mb_rows, int mb_cols) {
798   // TODO(JBB): double check we can't exceed this token count if we have a
799   // 32x32 transform crossing a boundary at a multiple of 16.
800   // mb_rows, cols are in units of 16 pixels. We assume 3 planes all at full
801   // resolution. We assume up to 1 token per pixel, and then allow
802   // a head room of 4.
803   return mb_rows * mb_cols * (16 * 16 * 3 + 4);
804 }
805 
806 // Get the allocated token size for a tile. It does the same calculation as in
807 // the frame token allocation.
allocated_tokens(TileInfo tile)808 static INLINE int allocated_tokens(TileInfo tile) {
809   int tile_mb_rows = (tile.mi_row_end - tile.mi_row_start + 1) >> 1;
810   int tile_mb_cols = (tile.mi_col_end - tile.mi_col_start + 1) >> 1;
811 
812   return get_token_alloc(tile_mb_rows, tile_mb_cols);
813 }
814 
get_start_tok(VP9_COMP * cpi,int tile_row,int tile_col,int mi_row,TOKENEXTRA ** tok)815 static INLINE void get_start_tok(VP9_COMP *cpi, int tile_row, int tile_col,
816                                  int mi_row, TOKENEXTRA **tok) {
817   VP9_COMMON *const cm = &cpi->common;
818   const int tile_cols = 1 << cm->log2_tile_cols;
819   TileDataEnc *this_tile = &cpi->tile_data[tile_row * tile_cols + tile_col];
820   const TileInfo *const tile_info = &this_tile->tile_info;
821 
822   int tile_mb_cols = (tile_info->mi_col_end - tile_info->mi_col_start + 1) >> 1;
823   const int mb_row = (mi_row - tile_info->mi_row_start) >> 1;
824 
825   *tok =
826       cpi->tile_tok[tile_row][tile_col] + get_token_alloc(mb_row, tile_mb_cols);
827 }
828 
829 int64_t vp9_get_y_sse(const YV12_BUFFER_CONFIG *a, const YV12_BUFFER_CONFIG *b);
830 #if CONFIG_VP9_HIGHBITDEPTH
831 int64_t vp9_highbd_get_y_sse(const YV12_BUFFER_CONFIG *a,
832                              const YV12_BUFFER_CONFIG *b);
833 #endif  // CONFIG_VP9_HIGHBITDEPTH
834 
835 void vp9_scale_references(VP9_COMP *cpi);
836 
837 void vp9_update_reference_frames(VP9_COMP *cpi);
838 
839 void vp9_set_high_precision_mv(VP9_COMP *cpi, int allow_high_precision_mv);
840 
841 YV12_BUFFER_CONFIG *vp9_svc_twostage_scale(
842     VP9_COMMON *cm, YV12_BUFFER_CONFIG *unscaled, YV12_BUFFER_CONFIG *scaled,
843     YV12_BUFFER_CONFIG *scaled_temp, INTERP_FILTER filter_type,
844     int phase_scaler, INTERP_FILTER filter_type2, int phase_scaler2);
845 
846 YV12_BUFFER_CONFIG *vp9_scale_if_required(
847     VP9_COMMON *cm, YV12_BUFFER_CONFIG *unscaled, YV12_BUFFER_CONFIG *scaled,
848     int use_normative_scaler, INTERP_FILTER filter_type, int phase_scaler);
849 
850 void vp9_apply_encoding_flags(VP9_COMP *cpi, vpx_enc_frame_flags_t flags);
851 
is_two_pass_svc(const struct VP9_COMP * const cpi)852 static INLINE int is_two_pass_svc(const struct VP9_COMP *const cpi) {
853   return cpi->use_svc && cpi->oxcf.pass != 0;
854 }
855 
is_one_pass_cbr_svc(const struct VP9_COMP * const cpi)856 static INLINE int is_one_pass_cbr_svc(const struct VP9_COMP *const cpi) {
857   return (cpi->use_svc && cpi->oxcf.pass == 0);
858 }
859 
860 #if CONFIG_VP9_TEMPORAL_DENOISING
denoise_svc(const struct VP9_COMP * const cpi)861 static INLINE int denoise_svc(const struct VP9_COMP *const cpi) {
862   return (!cpi->use_svc ||
863           (cpi->use_svc &&
864            cpi->svc.spatial_layer_id == cpi->svc.number_spatial_layers - 1));
865 }
866 #endif
867 
is_altref_enabled(const VP9_COMP * const cpi)868 static INLINE int is_altref_enabled(const VP9_COMP *const cpi) {
869   return !(cpi->oxcf.mode == REALTIME && cpi->oxcf.rc_mode == VPX_CBR) &&
870          cpi->oxcf.lag_in_frames > 0 &&
871          (cpi->oxcf.enable_auto_arf &&
872           (!is_two_pass_svc(cpi) ||
873            cpi->oxcf.ss_enable_auto_arf[cpi->svc.spatial_layer_id]));
874 }
875 
set_ref_ptrs(VP9_COMMON * cm,MACROBLOCKD * xd,MV_REFERENCE_FRAME ref0,MV_REFERENCE_FRAME ref1)876 static INLINE void set_ref_ptrs(VP9_COMMON *cm, MACROBLOCKD *xd,
877                                 MV_REFERENCE_FRAME ref0,
878                                 MV_REFERENCE_FRAME ref1) {
879   xd->block_refs[0] =
880       &cm->frame_refs[ref0 >= LAST_FRAME ? ref0 - LAST_FRAME : 0];
881   xd->block_refs[1] =
882       &cm->frame_refs[ref1 >= LAST_FRAME ? ref1 - LAST_FRAME : 0];
883 }
884 
get_chessboard_index(const int frame_index)885 static INLINE int get_chessboard_index(const int frame_index) {
886   return frame_index & 0x1;
887 }
888 
cond_cost_list(const struct VP9_COMP * cpi,int * cost_list)889 static INLINE int *cond_cost_list(const struct VP9_COMP *cpi, int *cost_list) {
890   return cpi->sf.mv.subpel_search_method != SUBPEL_TREE ? cost_list : NULL;
891 }
892 
get_num_vert_units(TileInfo tile,int shift)893 static INLINE int get_num_vert_units(TileInfo tile, int shift) {
894   int num_vert_units =
895       (tile.mi_row_end - tile.mi_row_start + (1 << shift) - 1) >> shift;
896   return num_vert_units;
897 }
898 
get_num_cols(TileInfo tile,int shift)899 static INLINE int get_num_cols(TileInfo tile, int shift) {
900   int num_cols =
901       (tile.mi_col_end - tile.mi_col_start + (1 << shift) - 1) >> shift;
902   return num_cols;
903 }
904 
get_level_index(VP9_LEVEL level)905 static INLINE int get_level_index(VP9_LEVEL level) {
906   int i;
907   for (i = 0; i < VP9_LEVELS; ++i) {
908     if (level == vp9_level_defs[i].level) return i;
909   }
910   return -1;
911 }
912 
913 VP9_LEVEL vp9_get_level(const Vp9LevelSpec *const level_spec);
914 
915 void vp9_new_framerate(VP9_COMP *cpi, double framerate);
916 
917 void vp9_set_row_mt(VP9_COMP *cpi);
918 
919 #define LAYER_IDS_TO_IDX(sl, tl, num_tl) ((sl) * (num_tl) + (tl))
920 
921 #ifdef __cplusplus
922 }  // extern "C"
923 #endif
924 
925 #endif  // VP9_ENCODER_VP9_ENCODER_H_
926