vp9_firstpass.c 84.7 KB
Newer Older
John Koleszar's avatar
John Koleszar committed
1
/*
2
 *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
John Koleszar's avatar
John Koleszar committed
3
 *
4
 *  Use of this source code is governed by a BSD-style license
5
6
 *  that can be found in the LICENSE file in the root of the source
 *  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.
John Koleszar's avatar
John Koleszar committed
9
10
 */

11
#include <limits.h>
12
#include <math.h>
13
#include <stdio.h>
14
15
16
17
18
19
20
21
22

#include "./vpx_scale_rtcd.h"

#include "vpx_mem/vpx_mem.h"
#include "vpx_scale/vpx_scale.h"
#include "vpx_scale/yv12config.h"

#include "vp9/common/vp9_entropymv.h"
#include "vp9/common/vp9_quant_common.h"
23
#include "vp9/common/vp9_reconinter.h"  // vp9_setup_dst_planes()
24
#include "vp9/common/vp9_systemdependent.h"
25

Marco Paniconi's avatar
Marco Paniconi committed
26
#include "vp9/encoder/vp9_aq_variance.h"
27
#include "vp9/encoder/vp9_block.h"
28
29
#include "vp9/encoder/vp9_encodeframe.h"
#include "vp9/encoder/vp9_encodemb.h"
30
#include "vp9/encoder/vp9_encodemv.h"
31
32
33
#include "vp9/encoder/vp9_extend.h"
#include "vp9/encoder/vp9_firstpass.h"
#include "vp9/encoder/vp9_mcomp.h"
34
#include "vp9/encoder/vp9_onyx_int.h"
35
#include "vp9/encoder/vp9_quantize.h"
36
#include "vp9/encoder/vp9_ratectrl.h"
37
38
#include "vp9/encoder/vp9_rdopt.h"
#include "vp9/encoder/vp9_variance.h"
John Koleszar's avatar
John Koleszar committed
39

40
#define OUTPUT_FPF 0
John Koleszar's avatar
John Koleszar committed
41

42
43
#define IIFACTOR   12.5
#define IIKFACTOR1 12.5
44
#define IIKFACTOR2 15.0
45
#define RMAX       512.0
46
#define GF_RMAX    96.0
Paul Wilkins's avatar
Paul Wilkins committed
47
#define ERR_DIVISOR   150.0
48
#define MIN_DECAY_FACTOR 0.1
John Koleszar's avatar
John Koleszar committed
49

50
51
#define KF_MB_INTRA_MIN 150
#define GF_MB_INTRA_MIN 100
Paul Wilkins's avatar
CQ Mode    
Paul Wilkins committed
52

53
#define DOUBLE_DIVIDE_CHECK(x) ((x) < 0 ? (x) - 0.000001 : (x) + 0.000001)
John Koleszar's avatar
John Koleszar committed
54

55
56
#define MIN_KF_BOOST        300

57
58
59
60
61
62
63
#if CONFIG_MULTIPLE_ARF
// Set MIN_GF_INTERVAL to 1 for the full decomposition.
#define MIN_GF_INTERVAL             2
#else
#define MIN_GF_INTERVAL             4
#endif

64
#define LONG_TERM_VBR_CORRECTION
65

66
67
68
69
70
71
static void swap_yv12(YV12_BUFFER_CONFIG *a, YV12_BUFFER_CONFIG *b) {
  YV12_BUFFER_CONFIG temp = *a;
  *a = *b;
  *b = temp;
}

72
73
74
75
76
77
78
static int gfboost_qadjust(int qindex) {
  const double q = vp9_convert_qindex_to_q(qindex);
  return (int)((0.00000828 * q * q * q) +
               (-0.0055 * q * q) +
               (1.32 * q) + 79.3);
}

79
80
// Resets the first pass file to the given position using a relative seek from
// the current position.
81
static void reset_fpf_position(struct twopass_rc *p,
82
                               const FIRSTPASS_STATS *position) {
83
  p->stats_in = position;
John Koleszar's avatar
John Koleszar committed
84
85
}

86
87
88
static int lookup_next_frame_stats(const struct twopass_rc *p,
                                   FIRSTPASS_STATS *next_frame) {
  if (p->stats_in >= p->stats_in_end)
John Koleszar's avatar
John Koleszar committed
89
    return EOF;
John Koleszar's avatar
John Koleszar committed
90

91
  *next_frame = *p->stats_in;
John Koleszar's avatar
John Koleszar committed
92
  return 1;
John Koleszar's avatar
John Koleszar committed
93
94
}

95

Adrian Grange's avatar
Adrian Grange committed
96
// Read frame stats at an offset from the current position.
97
98
99
static int read_frame_stats(const struct twopass_rc *p,
                            FIRSTPASS_STATS *frame_stats, int offset) {
  const FIRSTPASS_STATS *fps_ptr = p->stats_in;
John Koleszar's avatar
John Koleszar committed
100

Adrian Grange's avatar
Adrian Grange committed
101
  // Check legality of offset.
John Koleszar's avatar
John Koleszar committed
102
  if (offset >= 0) {
103
    if (&fps_ptr[offset] >= p->stats_in_end)
John Koleszar's avatar
John Koleszar committed
104
105
      return EOF;
  } else if (offset < 0) {
106
    if (&fps_ptr[offset] < p->stats_in_start)
John Koleszar's avatar
John Koleszar committed
107
108
109
110
111
      return EOF;
  }

  *frame_stats = fps_ptr[offset];
  return 1;
112
113
}

114
115
static int input_stats(struct twopass_rc *p, FIRSTPASS_STATS *fps) {
  if (p->stats_in >= p->stats_in_end)
John Koleszar's avatar
John Koleszar committed
116
    return EOF;
117

118
119
  *fps = *p->stats_in;
  ++p->stats_in;
John Koleszar's avatar
John Koleszar committed
120
  return 1;
121
122
}

123
124
static void output_stats(FIRSTPASS_STATS *stats,
                         struct vpx_codec_pkt_list *pktlist) {
John Koleszar's avatar
John Koleszar committed
125
126
127
128
129
  struct vpx_codec_cx_pkt pkt;
  pkt.kind = VPX_CODEC_STATS_PKT;
  pkt.data.twopass_stats.buf = stats;
  pkt.data.twopass_stats.sz = sizeof(FIRSTPASS_STATS);
  vpx_codec_pkt_list_add(pktlist, &pkt);
130
131
132

// TEMP debug code
#if OUTPUT_FPF
John Koleszar's avatar
John Koleszar committed
133
134
135
136
  {
    FILE *fpfile;
    fpfile = fopen("firstpass.stt", "a");

137
    fprintf(fpfile, "%12.0f %12.0f %12.0f %12.0f %12.0f %12.4f %12.4f"
John Koleszar's avatar
John Koleszar committed
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
            "%12.4f %12.4f %12.4f %12.4f %12.4f %12.4f %12.4f"
            "%12.0f %12.0f %12.4f %12.0f %12.0f %12.4f\n",
            stats->frame,
            stats->intra_error,
            stats->coded_error,
            stats->sr_coded_error,
            stats->ssim_weighted_pred_err,
            stats->pcnt_inter,
            stats->pcnt_motion,
            stats->pcnt_second_ref,
            stats->pcnt_neutral,
            stats->MVr,
            stats->mvr_abs,
            stats->MVc,
            stats->mvc_abs,
            stats->MVrv,
            stats->MVcv,
            stats->mv_in_out_count,
            stats->new_mv_count,
            stats->count,
            stats->duration);
    fclose(fpfile);
  }
161
162
163
#endif
}

John Koleszar's avatar
John Koleszar committed
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
static void zero_stats(FIRSTPASS_STATS *section) {
  section->frame      = 0.0;
  section->intra_error = 0.0;
  section->coded_error = 0.0;
  section->sr_coded_error = 0.0;
  section->ssim_weighted_pred_err = 0.0;
  section->pcnt_inter  = 0.0;
  section->pcnt_motion  = 0.0;
  section->pcnt_second_ref = 0.0;
  section->pcnt_neutral = 0.0;
  section->MVr        = 0.0;
  section->mvr_abs     = 0.0;
  section->MVc        = 0.0;
  section->mvc_abs     = 0.0;
  section->MVrv       = 0.0;
  section->MVcv       = 0.0;
  section->mv_in_out_count  = 0.0;
  section->new_mv_count = 0.0;
  section->count      = 0.0;
  section->duration   = 1.0;
184
  section->spatial_layer_id = 0;
185
186
}

Dmitry Kovalev's avatar
Dmitry Kovalev committed
187
188
static void accumulate_stats(FIRSTPASS_STATS *section,
                             const FIRSTPASS_STATS *frame) {
John Koleszar's avatar
John Koleszar committed
189
  section->frame += frame->frame;
190
  section->spatial_layer_id = frame->spatial_layer_id;
John Koleszar's avatar
John Koleszar committed
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
  section->intra_error += frame->intra_error;
  section->coded_error += frame->coded_error;
  section->sr_coded_error += frame->sr_coded_error;
  section->ssim_weighted_pred_err += frame->ssim_weighted_pred_err;
  section->pcnt_inter  += frame->pcnt_inter;
  section->pcnt_motion += frame->pcnt_motion;
  section->pcnt_second_ref += frame->pcnt_second_ref;
  section->pcnt_neutral += frame->pcnt_neutral;
  section->MVr        += frame->MVr;
  section->mvr_abs     += frame->mvr_abs;
  section->MVc        += frame->MVc;
  section->mvc_abs     += frame->mvc_abs;
  section->MVrv       += frame->MVrv;
  section->MVcv       += frame->MVcv;
  section->mv_in_out_count  += frame->mv_in_out_count;
  section->new_mv_count += frame->new_mv_count;
  section->count      += frame->count;
  section->duration   += frame->duration;
209
210
}

Dmitry Kovalev's avatar
Dmitry Kovalev committed
211
212
static void subtract_stats(FIRSTPASS_STATS *section,
                           const FIRSTPASS_STATS *frame) {
John Koleszar's avatar
John Koleszar committed
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
  section->frame -= frame->frame;
  section->intra_error -= frame->intra_error;
  section->coded_error -= frame->coded_error;
  section->sr_coded_error -= frame->sr_coded_error;
  section->ssim_weighted_pred_err -= frame->ssim_weighted_pred_err;
  section->pcnt_inter  -= frame->pcnt_inter;
  section->pcnt_motion -= frame->pcnt_motion;
  section->pcnt_second_ref -= frame->pcnt_second_ref;
  section->pcnt_neutral -= frame->pcnt_neutral;
  section->MVr        -= frame->MVr;
  section->mvr_abs     -= frame->mvr_abs;
  section->MVc        -= frame->MVc;
  section->mvc_abs     -= frame->mvc_abs;
  section->MVrv       -= frame->MVrv;
  section->MVcv       -= frame->MVcv;
  section->mv_in_out_count  -= frame->mv_in_out_count;
  section->new_mv_count -= frame->new_mv_count;
  section->count      -= frame->count;
  section->duration   -= frame->duration;
232
233
}

John Koleszar's avatar
John Koleszar committed
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
static void avg_stats(FIRSTPASS_STATS *section) {
  if (section->count < 1.0)
    return;

  section->intra_error /= section->count;
  section->coded_error /= section->count;
  section->sr_coded_error /= section->count;
  section->ssim_weighted_pred_err /= section->count;
  section->pcnt_inter  /= section->count;
  section->pcnt_second_ref /= section->count;
  section->pcnt_neutral /= section->count;
  section->pcnt_motion /= section->count;
  section->MVr        /= section->count;
  section->mvr_abs     /= section->count;
  section->MVc        /= section->count;
  section->mvc_abs     /= section->count;
  section->MVrv       /= section->count;
  section->MVcv       /= section->count;
  section->mv_in_out_count   /= section->count;
  section->duration   /= section->count;
254
255
}

256
257
// Calculate a modified Error used in distributing bits between easier and
// harder frames.
Dmitry Kovalev's avatar
Dmitry Kovalev committed
258
259
static double calculate_modified_err(const VP9_COMP *cpi,
                                     const FIRSTPASS_STATS *this_frame) {
260
  const struct twopass_rc *twopass = &cpi->twopass;
Dmitry Kovalev's avatar
Dmitry Kovalev committed
261
  const SVC *const svc = &cpi->svc;
262
263
264
265
  const FIRSTPASS_STATS *stats;
  double av_err;
  double modified_error;

Dmitry Kovalev's avatar
Dmitry Kovalev committed
266
267
268
  if (svc->number_spatial_layers > 1 &&
      svc->number_temporal_layers == 1) {
    twopass = &svc->layer_context[svc->spatial_layer_id].twopass;
269
270
271
272
273
274
275
  }

  stats = &twopass->total_stats;
  av_err = stats->ssim_weighted_pred_err / stats->count;
  modified_error = av_err * pow(this_frame->ssim_weighted_pred_err /
                   DOUBLE_DIVIDE_CHECK(av_err),
                   cpi->oxcf.two_pass_vbrbias / 100.0);
276

277
278
  return fclamp(modified_error,
                twopass->modified_error_min, twopass->modified_error_max);
John Koleszar's avatar
John Koleszar committed
279
280
}

281
static const double weight_table[256] = {
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
  0.020000, 0.020000, 0.020000, 0.020000, 0.020000, 0.020000, 0.020000,
  0.020000, 0.020000, 0.020000, 0.020000, 0.020000, 0.020000, 0.020000,
  0.020000, 0.020000, 0.020000, 0.020000, 0.020000, 0.020000, 0.020000,
  0.020000, 0.020000, 0.020000, 0.020000, 0.020000, 0.020000, 0.020000,
  0.020000, 0.020000, 0.020000, 0.020000, 0.020000, 0.031250, 0.062500,
  0.093750, 0.125000, 0.156250, 0.187500, 0.218750, 0.250000, 0.281250,
  0.312500, 0.343750, 0.375000, 0.406250, 0.437500, 0.468750, 0.500000,
  0.531250, 0.562500, 0.593750, 0.625000, 0.656250, 0.687500, 0.718750,
  0.750000, 0.781250, 0.812500, 0.843750, 0.875000, 0.906250, 0.937500,
  0.968750, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000,
  1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000,
  1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000,
  1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000,
  1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000,
  1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000,
  1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000,
  1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000,
  1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000,
  1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000,
  1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000,
  1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000,
  1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000,
  1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000,
  1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000,
  1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000,
  1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000,
  1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000,
  1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000,
  1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000,
  1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000,
  1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000,
  1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000,
  1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000,
  1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000,
  1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000,
  1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000,
  1.000000, 1.000000, 1.000000, 1.000000
319
320
};

321
static double simple_weight(const YV12_BUFFER_CONFIG *buf) {
John Koleszar's avatar
John Koleszar committed
322
  int i, j;
323
324
325
326
327
328
329
330
331
332
333
  double sum = 0.0;
  const int w = buf->y_crop_width;
  const int h = buf->y_crop_height;
  const uint8_t *row = buf->y_buffer;

  for (i = 0; i < h; ++i) {
    const uint8_t *pixel = row;
    for (j = 0; j < w; ++j)
      sum += weight_table[*pixel++];
    row += buf->y_stride;
  }
John Koleszar's avatar
John Koleszar committed
334

335
  return MAX(0.1, sum / (w * h));
John Koleszar's avatar
John Koleszar committed
336
337
}

338
// This function returns the maximum target rate per frame.
339
340
static int frame_max_bits(const RATE_CONTROL *rc,
                          const VP9EncoderConfig *oxcf) {
341
  int64_t max_bits = ((int64_t)rc->avg_frame_bandwidth *
Dmitry Kovalev's avatar
Dmitry Kovalev committed
342
                          (int64_t)oxcf->two_pass_vbrmax_section) / 100;
Yaowu Xu's avatar
Yaowu Xu committed
343
  if (max_bits < 0)
Paul Wilkins's avatar
Paul Wilkins committed
344
    max_bits = 0;
Dmitry Kovalev's avatar
Dmitry Kovalev committed
345
346
  else if (max_bits > rc->max_frame_bandwidth)
    max_bits = rc->max_frame_bandwidth;
Paul Wilkins's avatar
Paul Wilkins committed
347

Yaowu Xu's avatar
Yaowu Xu committed
348
  return (int)max_bits;
John Koleszar's avatar
John Koleszar committed
349
350
}

351
void vp9_init_first_pass(VP9_COMP *cpi) {
352
  zero_stats(&cpi->twopass.total_stats);
John Koleszar's avatar
John Koleszar committed
353
354
}

355
void vp9_end_first_pass(VP9_COMP *cpi) {
356
357
358
359
360
361
362
363
364
  if (cpi->use_svc && cpi->svc.number_temporal_layers == 1) {
    int i;
    for (i = 0; i < cpi->svc.number_spatial_layers; ++i) {
      output_stats(&cpi->svc.layer_context[i].twopass.total_stats,
                   cpi->output_pkt_list);
    }
  } else {
    output_stats(&cpi->twopass.total_stats, cpi->output_pkt_list);
  }
365
}
John Koleszar's avatar
John Koleszar committed
366

367
368
369
370
371
372
373
374
375
376
377
378
379
static vp9_variance_fn_t get_block_variance_fn(BLOCK_SIZE bsize) {
  switch (bsize) {
    case BLOCK_8X8:
      return vp9_mse8x8;
    case BLOCK_16X8:
      return vp9_mse16x8;
    case BLOCK_8X16:
      return vp9_mse8x16;
    default:
      return vp9_mse16x16;
  }
}

380
381
382
static unsigned int get_prediction_error(BLOCK_SIZE bsize,
                                         const struct buf_2d *src,
                                         const struct buf_2d *ref) {
Dmitry Kovalev's avatar
Dmitry Kovalev committed
383
  unsigned int sse;
384
385
  const vp9_variance_fn_t fn = get_block_variance_fn(bsize);
  fn(src->buf, src->stride, ref->buf, ref->stride, &sse);
Dmitry Kovalev's avatar
Dmitry Kovalev committed
386
  return sse;
387
388
}

389
390
391
392
393
394
395
396
397
398
399
// Refine the motion search range according to the frame dimension
// for first pass test.
static int get_search_range(const VP9_COMMON *cm) {
  int sr = 0;
  const int dim = MIN(cm->width, cm->height);

  while ((dim << sr) < MAX_FULL_PEL_VAL)
    ++sr;
  return sr;
}

400
static void first_pass_motion_search(VP9_COMP *cpi, MACROBLOCK *x,
401
                                     const MV *ref_mv, MV *best_mv,
402
                                     int *best_motion_err) {
John Koleszar's avatar
John Koleszar committed
403
  MACROBLOCKD *const xd = &x->e_mbd;
404
  MV tmp_mv = {0, 0};
405
  MV ref_mv_full = {ref_mv->row >> 3, ref_mv->col >> 3};
406
  int num00, tmp_err, n;
407
  const BLOCK_SIZE bsize = xd->mi[0]->mbmi.sb_type;
408
  vp9_variance_fn_ptr_t v_fn_ptr = cpi->fn_ptr[bsize];
409
  const int new_mv_mode_penalty = 256;
410

411
412
413
  int step_param = 3;
  int further_steps = (MAX_MVSEARCH_STEPS - 1) - step_param;
  const int sr = get_search_range(&cpi->common);
414
  step_param += sr;
415
416
  further_steps -= sr;

Adrian Grange's avatar
Adrian Grange committed
417
  // Override the default variance function to use MSE.
418
  v_fn_ptr.vf = get_block_variance_fn(bsize);
John Koleszar's avatar
John Koleszar committed
419

Adrian Grange's avatar
Adrian Grange committed
420
  // Center the initial step/diamond search on best mv.
421
  tmp_err = cpi->diamond_search_sad(x, &ref_mv_full, &tmp_mv,
422
                                    step_param,
423
                                    x->sadperbit16, &num00, &v_fn_ptr, ref_mv);
Deb Mukherjee's avatar
Deb Mukherjee committed
424
425
  if (tmp_err < INT_MAX)
    tmp_err = vp9_get_mvpred_var(x, &tmp_mv, ref_mv, &v_fn_ptr, 1);
John Koleszar's avatar
John Koleszar committed
426
427
428
429
430
  if (tmp_err < INT_MAX - new_mv_mode_penalty)
    tmp_err += new_mv_mode_penalty;

  if (tmp_err < *best_motion_err) {
    *best_motion_err = tmp_err;
431
    *best_mv = tmp_mv;
John Koleszar's avatar
John Koleszar committed
432
433
  }

Adrian Grange's avatar
Adrian Grange committed
434
  // Carry out further step/diamond searches as necessary.
John Koleszar's avatar
John Koleszar committed
435
436
437
438
  n = num00;
  num00 = 0;

  while (n < further_steps) {
Adrian Grange's avatar
Adrian Grange committed
439
    ++n;
John Koleszar's avatar
John Koleszar committed
440

441
    if (num00) {
Adrian Grange's avatar
Adrian Grange committed
442
      --num00;
443
    } else {
444
      tmp_err = cpi->diamond_search_sad(x, &ref_mv_full, &tmp_mv,
John Koleszar's avatar
John Koleszar committed
445
                                        step_param + n, x->sadperbit16,
446
                                        &num00, &v_fn_ptr, ref_mv);
Deb Mukherjee's avatar
Deb Mukherjee committed
447
448
      if (tmp_err < INT_MAX)
        tmp_err = vp9_get_mvpred_var(x, &tmp_mv, ref_mv, &v_fn_ptr, 1);
John Koleszar's avatar
John Koleszar committed
449
      if (tmp_err < INT_MAX - new_mv_mode_penalty)
John Koleszar's avatar
John Koleszar committed
450
451
        tmp_err += new_mv_mode_penalty;

John Koleszar's avatar
John Koleszar committed
452
      if (tmp_err < *best_motion_err) {
John Koleszar's avatar
John Koleszar committed
453
        *best_motion_err = tmp_err;
454
        *best_mv = tmp_mv;
John Koleszar's avatar
John Koleszar committed
455
      }
John Koleszar's avatar
John Koleszar committed
456
    }
John Koleszar's avatar
John Koleszar committed
457
  }
John Koleszar's avatar
John Koleszar committed
458
459
}

460
461
462
463
464
465
466
467
468
469
static BLOCK_SIZE get_bsize(const VP9_COMMON *cm, int mb_row, int mb_col) {
  if (2 * mb_col + 1 < cm->mi_cols) {
    return 2 * mb_row + 1 < cm->mi_rows ? BLOCK_16X16
                                        : BLOCK_16X8;
  } else {
    return 2 * mb_row + 1 < cm->mi_rows ? BLOCK_8X16
                                        : BLOCK_8X8;
  }
}

470
void vp9_first_pass(VP9_COMP *cpi) {
John Koleszar's avatar
John Koleszar committed
471
  int mb_row, mb_col;
John Koleszar's avatar
John Koleszar committed
472
  MACROBLOCK *const x = &cpi->mb;
473
  VP9_COMMON *const cm = &cpi->common;
John Koleszar's avatar
John Koleszar committed
474
  MACROBLOCKD *const xd = &x->e_mbd;
James Zern's avatar
James Zern committed
475
  TileInfo tile;
476
477
  struct macroblock_plane *const p = x->plane;
  struct macroblockd_plane *const pd = xd->plane;
478
  const PICK_MODE_CONTEXT *ctx = &x->pc_root->none;
479
  int i;
John Koleszar's avatar
John Koleszar committed
480
481

  int recon_yoffset, recon_uvoffset;
482
  YV12_BUFFER_CONFIG *const lst_yv12 = get_ref_frame_buffer(cpi, LAST_FRAME);
483
  YV12_BUFFER_CONFIG *gld_yv12 = get_ref_frame_buffer(cpi, GOLDEN_FRAME);
484
  YV12_BUFFER_CONFIG *const new_yv12 = get_frame_new_buffer(cm);
485
486
487
  int recon_y_stride = lst_yv12->y_stride;
  int recon_uv_stride = lst_yv12->uv_stride;
  int uv_mb_height = 16 >> (lst_yv12->y_height > lst_yv12->uv_height);
John Koleszar's avatar
John Koleszar committed
488
489
490
491
492
493
  int64_t intra_error = 0;
  int64_t coded_error = 0;
  int64_t sr_coded_error = 0;

  int sum_mvr = 0, sum_mvc = 0;
  int sum_mvr_abs = 0, sum_mvc_abs = 0;
494
  int64_t sum_mvrs = 0, sum_mvcs = 0;
John Koleszar's avatar
John Koleszar committed
495
496
497
498
499
500
501
502
  int mvcount = 0;
  int intercount = 0;
  int second_ref_count = 0;
  int intrapenalty = 256;
  int neutral_count = 0;
  int new_mv_count = 0;
  int sum_in_vectors = 0;
  uint32_t lastmv_as_int = 0;
503
  struct twopass_rc *twopass = &cpi->twopass;
Dmitry Kovalev's avatar
Dmitry Kovalev committed
504
  const MV zero_mv = {0, 0};
505
  const YV12_BUFFER_CONFIG *first_ref_buf = lst_yv12;
John Koleszar's avatar
John Koleszar committed
506

507
  vp9_clear_system_state();
John Koleszar's avatar
John Koleszar committed
508

509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
  if (cpi->use_svc && cpi->svc.number_temporal_layers == 1) {
    MV_REFERENCE_FRAME ref_frame = LAST_FRAME;
    const YV12_BUFFER_CONFIG *scaled_ref_buf = NULL;
    twopass = &cpi->svc.layer_context[cpi->svc.spatial_layer_id].twopass;

    vp9_scale_references(cpi);

    // Use either last frame or alt frame for motion search.
    if (cpi->ref_frame_flags & VP9_LAST_FLAG) {
      scaled_ref_buf = vp9_get_scaled_ref_frame(cpi, LAST_FRAME);
      ref_frame = LAST_FRAME;
    } else if (cpi->ref_frame_flags & VP9_ALT_FLAG) {
      scaled_ref_buf = vp9_get_scaled_ref_frame(cpi, ALTREF_FRAME);
      ref_frame = ALTREF_FRAME;
    }

    if (scaled_ref_buf != NULL) {
      // Update the stride since we are using scaled reference buffer
      first_ref_buf = scaled_ref_buf;
      recon_y_stride = first_ref_buf->y_stride;
      recon_uv_stride = first_ref_buf->uv_stride;
      uv_mb_height = 16 >> (first_ref_buf->y_height > first_ref_buf->uv_height);
    }

    // Disable golden frame for svc first pass for now.
    gld_yv12 = NULL;
    set_ref_ptrs(cm, xd, ref_frame, NONE);
  }

John Koleszar's avatar
John Koleszar committed
538
  vp9_setup_src_planes(x, cpi->Source, 0, 0);
539
  vp9_setup_pre_planes(xd, 0, first_ref_buf, 0, 0, NULL);
540
  vp9_setup_dst_planes(xd, new_yv12, 0, 0);
John Koleszar's avatar
John Koleszar committed
541

542
543
  xd->mi = cm->mi_grid_visible;
  xd->mi[0] = cm->mi;
John Koleszar's avatar
John Koleszar committed
544

545
  vp9_setup_block_planes(&x->e_mbd, cm->subsampling_x, cm->subsampling_y);
John Koleszar's avatar
John Koleszar committed
546

547
  vp9_frame_init_quantizer(cpi);
John Koleszar's avatar
John Koleszar committed
548

549
550
  for (i = 0; i < MAX_MB_PLANE; ++i) {
    p[i].coeff = ctx->coeff_pbuf[i][1];
551
    p[i].qcoeff = ctx->qcoeff_pbuf[i][1];
552
    pd[i].dqcoeff = ctx->dqcoeff_pbuf[i][1];
553
    p[i].eobs = ctx->eobs_pbuf[i][1];
554
  }
555
  x->skip_recode = 0;
556

Dmitry Kovalev's avatar
Dmitry Kovalev committed
557
558
  vp9_init_mv_probs(cm);
  vp9_initialize_rd_consts(cpi);
John Koleszar's avatar
John Koleszar committed
559

Adrian Grange's avatar
Adrian Grange committed
560
  // Tiling is ignored in the first pass.
James Zern's avatar
James Zern committed
561
562
  vp9_tile_init(&tile, cm, 0, 0);

Adrian Grange's avatar
Adrian Grange committed
563
  for (mb_row = 0; mb_row < cm->mb_rows; ++mb_row) {
John Koleszar's avatar
John Koleszar committed
564
565
566
567
    int_mv best_ref_mv;

    best_ref_mv.as_int = 0;

Adrian Grange's avatar
Adrian Grange committed
568
    // Reset above block coeffs.
John Koleszar's avatar
John Koleszar committed
569
570
    xd->up_available = (mb_row != 0);
    recon_yoffset = (mb_row * recon_y_stride * 16);
Alex Converse's avatar
Alex Converse committed
571
    recon_uvoffset = (mb_row * recon_uv_stride * uv_mb_height);
John Koleszar's avatar
John Koleszar committed
572

573
    // Set up limit values for motion vectors to prevent them extending
Adrian Grange's avatar
Adrian Grange committed
574
    // outside the UMV borders.
575
    x->mv_row_min = -((mb_row * 16) + BORDER_MV_PIXELS_B16);
John Koleszar's avatar
John Koleszar committed
576
    x->mv_row_max = ((cm->mb_rows - 1 - mb_row) * 16)
577
                    + BORDER_MV_PIXELS_B16;
John Koleszar's avatar
John Koleszar committed
578

Adrian Grange's avatar
Adrian Grange committed
579
    for (mb_col = 0; mb_col < cm->mb_cols; ++mb_col) {
John Koleszar's avatar
John Koleszar committed
580
      int this_error;
Dmitry Kovalev's avatar
Dmitry Kovalev committed
581
      const int use_dc_pred = (mb_col || mb_row) && (!mb_col || !mb_row);
Dmitry Kovalev's avatar
Dmitry Kovalev committed
582
      double error_weight = 1.0;
583
      const BLOCK_SIZE bsize = get_bsize(cm, mb_row, mb_col);
584

585
      vp9_clear_system_state();
John Koleszar's avatar
John Koleszar committed
586

587
588
589
      xd->plane[0].dst.buf = new_yv12->y_buffer + recon_yoffset;
      xd->plane[1].dst.buf = new_yv12->u_buffer + recon_uvoffset;
      xd->plane[2].dst.buf = new_yv12->v_buffer + recon_uvoffset;
John Koleszar's avatar
John Koleszar committed
590
      xd->left_available = (mb_col != 0);
591
592
      xd->mi[0]->mbmi.sb_type = bsize;
      xd->mi[0]->mbmi.ref_frame[0] = INTRA_FRAME;
James Zern's avatar
James Zern committed
593
      set_mi_row_col(xd, &tile,
594
595
                     mb_row << 1, num_8x8_blocks_high_lookup[bsize],
                     mb_col << 1, num_8x8_blocks_wide_lookup[bsize],
James Zern's avatar
James Zern committed
596
                     cm->mi_rows, cm->mi_cols);
Jingning Han's avatar
Jingning Han committed
597

598
      if (cpi->oxcf.aq_mode == VARIANCE_AQ) {
Dmitry Kovalev's avatar
Dmitry Kovalev committed
599
        const int energy = vp9_block_energy(cpi, x, bsize);
600
601
602
        error_weight = vp9_vaq_inv_q_ratio(energy);
      }

Adrian Grange's avatar
Adrian Grange committed
603
      // Do intra 16x16 prediction.
604
      this_error = vp9_encode_intra(x, use_dc_pred);
605
      if (cpi->oxcf.aq_mode == VARIANCE_AQ) {
606
        vp9_clear_system_state();
607
        this_error = (int)(this_error * error_weight);
608
      }
John Koleszar's avatar
John Koleszar committed
609

Adrian Grange's avatar
Adrian Grange committed
610
611
      // Intrapenalty below deals with situations where the intra and inter
      // error scores are very low (e.g. a plain black frame).
612
613
614
615
      // We do not have special cases in first pass for 0,0 and nearest etc so
      // all inter modes carry an overhead cost estimate for the mv.
      // When the error score is very low this causes us to pick all or lots of
      // INTRA modes and throw lots of key frames.
John Koleszar's avatar
John Koleszar committed
616
617
618
      // This penalty adds a cost matching that of a 0,0 mv to the intra case.
      this_error += intrapenalty;

Adrian Grange's avatar
Adrian Grange committed
619
      // Accumulate the intra error.
John Koleszar's avatar
John Koleszar committed
620
621
      intra_error += (int64_t)this_error;

622
623
      // Set up limit values for motion vectors to prevent them extending
      // outside the UMV borders.
624
      x->mv_col_min = -((mb_col * 16) + BORDER_MV_PIXELS_B16);
Dmitry Kovalev's avatar
Dmitry Kovalev committed
625
      x->mv_col_max = ((cm->mb_cols - 1 - mb_col) * 16) + BORDER_MV_PIXELS_B16;
John Koleszar's avatar
John Koleszar committed
626

Adrian Grange's avatar
Adrian Grange committed
627
      // Other than for the first frame do a motion search.
John Koleszar's avatar
John Koleszar committed
628
      if (cm->current_video_frame > 0) {
629
        int tmp_err, motion_error;
John Koleszar's avatar
John Koleszar committed
630
        int_mv mv, tmp_mv;
631

632
        xd->plane[0].pre[0].buf = first_ref_buf->y_buffer + recon_yoffset;
633
634
        motion_error = get_prediction_error(bsize, &x->plane[0].src,
                                            &xd->plane[0].pre[0]);
Adrian Grange's avatar
Adrian Grange committed
635
        // Assume 0,0 motion with no mv overhead.
John Koleszar's avatar
John Koleszar committed
636
637
638
        mv.as_int = tmp_mv.as_int = 0;

        // Test last reference frame using the previous best mv as the
Adrian Grange's avatar
Adrian Grange committed
639
        // starting point (best reference) for the search.
640
        first_pass_motion_search(cpi, x, &best_ref_mv.as_mv, &mv.as_mv,
641
                                 &motion_error);
642
        if (cpi->oxcf.aq_mode == VARIANCE_AQ) {
643
          vp9_clear_system_state();
644
          motion_error = (int)(motion_error * error_weight);
645
        }
John Koleszar's avatar
John Koleszar committed
646

647
648
        // If the current best reference mv is not centered on 0,0 then do a 0,0
        // based search as well.
John Koleszar's avatar
John Koleszar committed
649
650
        if (best_ref_mv.as_int) {
          tmp_err = INT_MAX;
Dmitry Kovalev's avatar
Dmitry Kovalev committed
651
          first_pass_motion_search(cpi, x, &zero_mv, &tmp_mv.as_mv,
652
                                   &tmp_err);
653
          if (cpi->oxcf.aq_mode == VARIANCE_AQ) {
654
            vp9_clear_system_state();
655
            tmp_err = (int)(tmp_err * error_weight);
656
          }
John Koleszar's avatar
John Koleszar committed
657
658
659
660
661
662

          if (tmp_err < motion_error) {
            motion_error = tmp_err;
            mv.as_int = tmp_mv.as_int;
          }
        }
John Koleszar's avatar
John Koleszar committed
663

Adrian Grange's avatar
Adrian Grange committed
664
        // Search in an older reference frame.
665
        if (cm->current_video_frame > 1 && gld_yv12 != NULL) {
Adrian Grange's avatar
Adrian Grange committed
666
          // Assume 0,0 motion with no mv overhead.
667
668
669
          int gf_motion_error;

          xd->plane[0].pre[0].buf = gld_yv12->y_buffer + recon_yoffset;
670
671
          gf_motion_error = get_prediction_error(bsize, &x->plane[0].src,
                                                 &xd->plane[0].pre[0]);
John Koleszar's avatar
John Koleszar committed
672

Dmitry Kovalev's avatar
Dmitry Kovalev committed
673
          first_pass_motion_search(cpi, x, &zero_mv, &tmp_mv.as_mv,
674
                                   &gf_motion_error);
675
          if (cpi->oxcf.aq_mode == VARIANCE_AQ) {
676
            vp9_clear_system_state();
677
            gf_motion_error = (int)(gf_motion_error * error_weight);
678
          }
John Koleszar's avatar
John Koleszar committed
679

Dmitry Kovalev's avatar
Dmitry Kovalev committed
680
          if (gf_motion_error < motion_error && gf_motion_error < this_error)
Adrian Grange's avatar
Adrian Grange committed
681
            ++second_ref_count;
John Koleszar's avatar
John Koleszar committed
682

Adrian Grange's avatar
Adrian Grange committed
683
          // Reset to last frame as reference buffer.
684
685
686
          xd->plane[0].pre[0].buf = first_ref_buf->y_buffer + recon_yoffset;
          xd->plane[1].pre[0].buf = first_ref_buf->u_buffer + recon_uvoffset;
          xd->plane[2].pre[0].buf = first_ref_buf->v_buffer + recon_uvoffset;
John Koleszar's avatar
John Koleszar committed
687

Adrian Grange's avatar
Adrian Grange committed
688
689
690
691
          // In accumulating a score for the older reference frame take the
          // best of the motion predicted score and the intra coded error
          // (just as will be done for) accumulation of "coded_error" for
          // the last frame.
John Koleszar's avatar
John Koleszar committed
692
693
694
695
          if (gf_motion_error < this_error)
            sr_coded_error += gf_motion_error;
          else
            sr_coded_error += this_error;
696
        } else {
John Koleszar's avatar
John Koleszar committed
697
          sr_coded_error += motion_error;
698
        }
Adrian Grange's avatar
Adrian Grange committed
699
        // Start by assuming that intra mode is best.
700
        best_ref_mv.as_int = 0;
John Koleszar's avatar
John Koleszar committed
701

John Koleszar's avatar
John Koleszar committed
702
        if (motion_error <= this_error) {
Adrian Grange's avatar
Adrian Grange committed
703
704
705
          // Keep a count of cases where the inter and intra were very close
          // and very low. This helps with scene cut detection for example in
          // cropped clips with black bars at the sides or top and bottom.
Dmitry Kovalev's avatar
Dmitry Kovalev committed
706
707
          if (((this_error - intrapenalty) * 9 <= motion_error * 10) &&
              this_error < 2 * intrapenalty)
Adrian Grange's avatar
Adrian Grange committed
708
            ++neutral_count;
John Koleszar's avatar
John Koleszar committed
709

Yaowu Xu's avatar
Yaowu Xu committed
710
711
          mv.as_mv.row *= 8;
          mv.as_mv.col *= 8;
John Koleszar's avatar
John Koleszar committed
712
          this_error = motion_error;
713
714
715
716
717
          xd->mi[0]->mbmi.mode = NEWMV;
          xd->mi[0]->mbmi.mv[0] = mv;
          xd->mi[0]->mbmi.tx_size = TX_4X4;
          xd->mi[0]->mbmi.ref_frame[0] = LAST_FRAME;
          xd->mi[0]->mbmi.ref_frame[1] = NONE;
718
          vp9_build_inter_predictors_sby(xd, mb_row << 1, mb_col << 1, bsize);
719
          vp9_encode_sby_pass1(x, bsize);
John Koleszar's avatar
John Koleszar committed
720
721
722
723
724
725
          sum_mvr += mv.as_mv.row;
          sum_mvr_abs += abs(mv.as_mv.row);
          sum_mvc += mv.as_mv.col;
          sum_mvc_abs += abs(mv.as_mv.col);
          sum_mvrs += mv.as_mv.row * mv.as_mv.row;
          sum_mvcs += mv.as_mv.col * mv.as_mv.col;
Adrian Grange's avatar
Adrian Grange committed
726
          ++intercount;
John Koleszar's avatar
John Koleszar committed
727
728
729
730

          best_ref_mv.as_int = mv.as_int;

          if (mv.as_int) {
Adrian Grange's avatar
Adrian Grange committed
731
            ++mvcount;
John Koleszar's avatar
John Koleszar committed
732

Adrian Grange's avatar
Adrian Grange committed
733
            // Non-zero vector, was it different from the last non zero vector?
John Koleszar's avatar
John Koleszar committed
734
            if (mv.as_int != lastmv_as_int)
Adrian Grange's avatar
Adrian Grange committed
735
              ++new_mv_count;
John Koleszar's avatar
John Koleszar committed
736
737
            lastmv_as_int = mv.as_int;

Adrian Grange's avatar
Adrian Grange committed
738
            // Does the row vector point inwards or outwards?
John Koleszar's avatar
John Koleszar committed
739
740
            if (mb_row < cm->mb_rows / 2) {
              if (mv.as_mv.row > 0)
Adrian Grange's avatar
Adrian Grange committed
741
                --sum_in_vectors;
John Koleszar's avatar
John Koleszar committed
742
              else if (mv.as_mv.row < 0)
Adrian Grange's avatar
Adrian Grange committed
743
                ++sum_in_vectors;
John Koleszar's avatar
John Koleszar committed
744
745
            } else if (mb_row > cm->mb_rows / 2) {
              if (mv.as_mv.row > 0)
Adrian Grange's avatar
Adrian Grange committed
746
                ++sum_in_vectors;
John Koleszar's avatar
John Koleszar committed
747
              else if (mv.as_mv.row < 0)
Adrian Grange's avatar
Adrian Grange committed
748
                --sum_in_vectors;
John Koleszar's avatar
John Koleszar committed
749
750
            }

Adrian Grange's avatar
Adrian Grange committed
751
            // Does the col vector point inwards or outwards?
John Koleszar's avatar
John Koleszar committed
752
753
            if (mb_col < cm->mb_cols / 2) {
              if (mv.as_mv.col > 0)
Adrian Grange's avatar
Adrian Grange committed
754
                --sum_in_vectors;
John Koleszar's avatar
John Koleszar committed
755
              else if (mv.as_mv.col < 0)
Adrian Grange's avatar
Adrian Grange committed
756
                ++sum_in_vectors;
John Koleszar's avatar
John Koleszar committed
757
758
            } else if (mb_col > cm->mb_cols / 2) {
              if (mv.as_mv.col > 0)
Adrian Grange's avatar
Adrian Grange committed
759
                ++sum_in_vectors;
John Koleszar's avatar
John Koleszar committed
760
              else if (mv.as_mv.col < 0)
Adrian Grange's avatar
Adrian Grange committed
761
                --sum_in_vectors;
John Koleszar's avatar
John Koleszar committed
762
763
            }
          }
John Koleszar's avatar
John Koleszar committed
764
        }
765
      } else {
John Koleszar's avatar
John Koleszar committed
766
        sr_coded_error += (int64_t)this_error;
767
      }
John Koleszar's avatar
John Koleszar committed
768
      coded_error += (int64_t)this_error;
John Koleszar's avatar
John Koleszar committed
769

Adrian Grange's avatar
Adrian Grange committed
770
      // Adjust to the next column of MBs.
John Koleszar's avatar
John Koleszar committed
771
      x->plane[0].src.buf += 16;
Alex Converse's avatar
Alex Converse committed
772
773
      x->plane[1].src.buf += uv_mb_height;
      x->plane[2].src.buf += uv_mb_height;
John Koleszar's avatar
John Koleszar committed
774

John Koleszar's avatar
John Koleszar committed
775
      recon_yoffset += 16;
Alex Converse's avatar
Alex Converse committed
776
      recon_uvoffset += uv_mb_height;
John Koleszar's avatar
John Koleszar committed
777
778
    }

Adrian Grange's avatar
Adrian Grange committed
779
    // Adjust to the next row of MBs.
John Koleszar's avatar
John Koleszar committed
780
    x->plane[0].src.buf += 16 * x->plane[0].src.stride - 16 * cm->mb_cols;
Alex Converse's avatar
Alex Converse committed
781
782
783
784
    x->plane[1].src.buf += uv_mb_height * x->plane[1].src.stride -
                           uv_mb_height * cm->mb_cols;
    x->plane[2].src.buf += uv_mb_height * x->plane[1].src.stride -
                           uv_mb_height * cm->mb_cols;
John Koleszar's avatar
John Koleszar committed
785

786
    vp9_clear_system_state();
John Koleszar's avatar
John Koleszar committed
787
788
  }

789
  vp9_clear_system_state();
John Koleszar's avatar
John Koleszar committed
790
791
792
  {
    FIRSTPASS_STATS fps;

793
    fps.frame = cm->current_video_frame;
794
    fps.spatial_layer_id = cpi->svc.spatial_layer_id;
795
796
797
    fps.intra_error = (double)(intra_error >> 8);
    fps.coded_error = (double)(coded_error >> 8);
    fps.sr_coded_error = (double)(sr_coded_error >> 8);
798
    fps.ssim_weighted_pred_err = fps.coded_error * simple_weight(cpi->Source);
799
800
801
802
    fps.count = 1.0;
    fps.pcnt_inter = (double)intercount / cm->MBs;
    fps.pcnt_second_ref = (double)second_ref_count / cm->MBs;
    fps.pcnt_neutral = (double)neutral_count / cm->MBs;
John Koleszar's avatar
John Koleszar committed
803
804

    if (mvcount > 0) {
805
806
807
808
      fps.MVr = (double)sum_mvr / mvcount;
      fps.mvr_abs = (double)sum_mvr_abs / mvcount;
      fps.MVc = (double)sum_mvc / mvcount;
      fps.mvc_abs = (double)sum_mvc_abs / mvcount;
Dmitry Kovalev's avatar
Dmitry Kovalev committed
809
810
      fps.MVrv = ((double)sum_mvrs - (fps.MVr * fps.MVr / mvcount)) / mvcount;
      fps.MVcv = ((double)sum_mvcs - (fps.MVc * fps.MVc / mvcount)) / mvcount;
811
      fps.mv_in_out_count = (double)sum_in_vectors / (mvcount * 2);
John Koleszar's avatar
John Koleszar committed
812
      fps.new_mv_count = new_mv_count;
Dmitry Kovalev's avatar
Dmitry Kovalev committed
813
      fps.pcnt_motion = (double)mvcount / cm->MBs;
814
815
816
817
818
819
820
821
822
823
    } else {
      fps.MVr = 0.0;
      fps.mvr_abs = 0.0;
      fps.MVc = 0.0;
      fps.mvc_abs = 0.0;
      fps.MVrv = 0.0;
      fps.MVcv = 0.0;
      fps.mv_in_out_count = 0.0;
      fps.new_mv_count = 0.0;
      fps.pcnt_motion = 0.0;
Paul Wilkins's avatar
Paul Wilkins committed
824
    }
John Koleszar's avatar
John Koleszar committed
825

826
827
828
    // TODO(paulwilkins):  Handle the case when duration is set to 0, or
    // something less than the full time between subsequent values of
    // cpi->source_time_stamp.
829
    fps.duration = (double)(cpi->source->ts_end - cpi->source->ts_start);
John Koleszar's avatar
John Koleszar committed
830

Adrian Grange's avatar
Adrian Grange committed
831
    // Don't want to do output stats with a stack variable!
832
    twopass->this_frame_stats = fps;
833
    output_stats(&twopass->this_frame_stats, cpi->output_pkt_list);
834
    accumulate_stats(&twopass->total_stats, &fps);
John Koleszar's avatar
John Koleszar committed
835
836
837
  }

  // Copy the previous Last Frame back into gf and and arf buffers if
Adrian Grange's avatar
Adrian Grange committed
838
  // the prediction is good enough... but also don't allow it to lag too far.
839
  if ((twopass->sr_update_lag > 3) ||
John Koleszar's avatar
John Koleszar committed
840
      ((cm->current_video_frame > 0) &&
841
842
843
       (twopass->this_frame_stats.pcnt_inter > 0.20) &&
       ((twopass->this_frame_stats.intra_error /
         DOUBLE_DIVIDE_CHECK(twopass->this_frame_stats.coded_error)) > 2.0))) {
844
845
846
    if (gld_yv12 != NULL) {
      vp8_yv12_copy_frame(lst_yv12, gld_yv12);
    }
847
    twopass->sr_update_lag = 1;
848
  } else {
Adrian Grange's avatar
Adrian Grange committed
849
    ++twopass->sr_update_lag;
850
  }
851
852
853
854
855
856
857

  if (cpi->use_svc && cpi->svc.number_temporal_layers == 1) {
    vp9_update_reference_frames(cpi);
  } else {
    // Swap frame pointers so last frame refers to the frame we just compressed.
    swap_yv12(lst_yv12, new_yv12);
  }
858

859
  vp9_extend_frame_borders(lst_yv12);
John Koleszar's avatar
John Koleszar committed
860

861
862
  // Special case for the first frame. Copy into the GF buffer as a second
  // reference.
863
  if (cm->current_video_frame == 0 && gld_yv12 != NULL) {
John Koleszar's avatar
John Koleszar committed
864
    vp8_yv12_copy_frame(lst_yv12, gld_yv12);
865
  }
John Koleszar's avatar
John Koleszar committed
866

Adrian Grange's avatar
Adrian Grange committed
867
  // Use this to see what the first pass reconstruction looks like.
John Koleszar's avatar
John Koleszar committed
868
869
870
  if (0) {
    char filename[512];
    FILE *recon_file;
871
872
    snprintf(filename, sizeof(filename), "enc%04d.yuv",
             (int)cm->current_video_frame);
John Koleszar's avatar
John Koleszar committed
873

John Koleszar's avatar
John Koleszar committed
874
875
876
877
878
    if (cm->current_video_frame == 0)
      recon_file = fopen(filename, "wb");
    else
      recon_file = fopen(filename, "ab");

Frank Galligan's avatar
Frank Galligan committed
879
    (void)fwrite(lst_yv12->buffer_alloc, lst_yv12->frame_size, 1, recon_file);
John Koleszar's avatar
John Koleszar committed
880
881
    fclose(recon_file);
  }
John Koleszar's avatar
John Koleszar committed
882

Adrian Grange's avatar
Adrian Grange committed
883
  ++cm->current_video_frame;