vp9_firstpass.c 89.7 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 12 13
#include <math.h>
#include <limits.h>
#include <stdio.h>
14
#include "vp9/common/vp9_systemdependent.h"
15
#include "vp9/encoder/vp9_block.h"
16 17 18 19 20
#include "vp9/encoder/vp9_encodeframe.h"
#include "vp9/encoder/vp9_encodemb.h"
#include "vp9/encoder/vp9_extend.h"
#include "vp9/encoder/vp9_firstpass.h"
#include "vp9/encoder/vp9_mcomp.h"
21 22
#include "vp9/encoder/vp9_onyx_int.h"
#include "vp9/encoder/vp9_variance.h"
Johann's avatar
Johann committed
23
#include "vpx_scale/vpx_scale.h"
John Koleszar's avatar
John Koleszar committed
24
#include "vpx_mem/vpx_mem.h"
25
#include "vpx_scale/yv12config.h"
26
#include "vp9/encoder/vp9_quantize.h"
27 28
#include "vp9/encoder/vp9_rdopt.h"
#include "vp9/encoder/vp9_ratectrl.h"
29 30
#include "vp9/common/vp9_quant_common.h"
#include "vp9/common/vp9_entropymv.h"
31
#include "vp9/encoder/vp9_encodemv.h"
32
#include "vp9/encoder/vp9_vaq.h"
33
#include "./vpx_scale_rtcd.h"
34 35
// TODO(jkoleszar): for setup_dst_planes
#include "vp9/common/vp9_reconinter.h"
John Koleszar's avatar
John Koleszar committed
36

37
#define OUTPUT_FPF 0
John Koleszar's avatar
John Koleszar committed
38

39 40
#define IIFACTOR   12.5
#define IIKFACTOR1 12.5
41
#define IIKFACTOR2 15.0
42
#define RMAX       512.0
43
#define GF_RMAX    96.0
Paul Wilkins's avatar
Paul Wilkins committed
44
#define ERR_DIVISOR   150.0
45
#define MIN_DECAY_FACTOR 0.1
John Koleszar's avatar
John Koleszar committed
46

47 48
#define KF_MB_INTRA_MIN 150
#define GF_MB_INTRA_MIN 100
Paul Wilkins's avatar
CQ Mode  
Paul Wilkins committed
49

50
#define DOUBLE_DIVIDE_CHECK(x) ((x) < 0 ? (x) - 0.000001 : (x) + 0.000001)
John Koleszar's avatar
John Koleszar committed
51 52 53 54

#define POW1 (double)cpi->oxcf.two_pass_vbrbias/100.0
#define POW2 (double)cpi->oxcf.two_pass_vbrbias/100.0

55 56 57 58 59 60
static void swap_yv12(YV12_BUFFER_CONFIG *a, YV12_BUFFER_CONFIG *b) {
  YV12_BUFFER_CONFIG temp = *a;
  *a = *b;
  *b = temp;
}

61
static void find_next_key_frame(VP9_COMP *cpi, FIRSTPASS_STATS *this_frame);
Paul Wilkins's avatar
Paul Wilkins committed
62

John Koleszar's avatar
John Koleszar committed
63 64 65
static int select_cq_level(int qindex) {
  int ret_val = QINDEX_RANGE - 1;
  int i;
Paul Wilkins's avatar
Paul Wilkins committed
66

67
  double target_q = (vp9_convert_qindex_to_q(qindex) * 0.5847) + 1.0;
Paul Wilkins's avatar
Paul Wilkins committed
68

John Koleszar's avatar
John Koleszar committed
69
  for (i = 0; i < QINDEX_RANGE; i++) {
70
    if (target_q <= vp9_convert_qindex_to_q(i)) {
John Koleszar's avatar
John Koleszar committed
71 72
      ret_val = i;
      break;
Paul Wilkins's avatar
Paul Wilkins committed
73
    }
John Koleszar's avatar
John Koleszar committed
74
  }
Paul Wilkins's avatar
Paul Wilkins committed
75

John Koleszar's avatar
John Koleszar committed
76
  return ret_val;
Paul Wilkins's avatar
Paul Wilkins committed
77
}
Paul Wilkins's avatar
CQ Mode  
Paul Wilkins committed
78

79 80 81 82 83 84 85 86 87 88 89 90 91
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);
}

static int kfboost_qadjust(int qindex) {
  const double q = vp9_convert_qindex_to_q(qindex);
  return (int)((0.00000973 * q * q * q) +
               (-0.00613 * q * q) +
               (1.316 * q) + 121.2);
}
John Koleszar's avatar
John Koleszar committed
92

93 94
// Resets the first pass file to the given position using a relative seek from
// the current position.
95 96
static void reset_fpf_position(VP9_COMP *cpi, FIRSTPASS_STATS *position) {
  cpi->twopass.stats_in = position;
John Koleszar's avatar
John Koleszar committed
97 98
}

99
static int lookup_next_frame_stats(VP9_COMP *cpi, FIRSTPASS_STATS *next_frame) {
John Koleszar's avatar
John Koleszar committed
100 101
  if (cpi->twopass.stats_in >= cpi->twopass.stats_in_end)
    return EOF;
John Koleszar's avatar
John Koleszar committed
102

John Koleszar's avatar
John Koleszar committed
103 104
  *next_frame = *cpi->twopass.stats_in;
  return 1;
John Koleszar's avatar
John Koleszar committed
105 106
}

107
// Read frame stats at an offset from the current position
108
static int read_frame_stats(VP9_COMP *cpi,
John Koleszar's avatar
John Koleszar committed
109 110 111 112 113 114 115 116 117 118 119 120 121 122 123
                            FIRSTPASS_STATS *frame_stats,
                            int offset) {
  FIRSTPASS_STATS *fps_ptr = cpi->twopass.stats_in;

  // Check legality of offset
  if (offset >= 0) {
    if (&fps_ptr[offset] >= cpi->twopass.stats_in_end)
      return EOF;
  } else if (offset < 0) {
    if (&fps_ptr[offset] < cpi->twopass.stats_in_start)
      return EOF;
  }

  *frame_stats = fps_ptr[offset];
  return 1;
124 125
}

126
static int input_stats(VP9_COMP *cpi, FIRSTPASS_STATS *fps) {
John Koleszar's avatar
John Koleszar committed
127 128
  if (cpi->twopass.stats_in >= cpi->twopass.stats_in_end)
    return EOF;
129

John Koleszar's avatar
John Koleszar committed
130 131 132 133
  *fps = *cpi->twopass.stats_in;
  cpi->twopass.stats_in =
    (void *)((char *)cpi->twopass.stats_in + sizeof(FIRSTPASS_STATS));
  return 1;
134 135
}

136
static void output_stats(const VP9_COMP            *cpi,
137
                         struct vpx_codec_pkt_list *pktlist,
John Koleszar's avatar
John Koleszar committed
138 139 140 141 142 143
                         FIRSTPASS_STATS            *stats) {
  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);
144 145 146 147

// TEMP debug code
#if OUTPUT_FPF

John Koleszar's avatar
John Koleszar committed
148 149 150 151
  {
    FILE *fpfile;
    fpfile = fopen("firstpass.stt", "a");

152
    fprintf(stdout, "%12.0f %12.0f %12.0f %12.0f %12.0f %12.4f %12.4f"
John Koleszar's avatar
John Koleszar committed
153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175
            "%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);
  }
176 177 178
#endif
}

John Koleszar's avatar
John Koleszar committed
179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198
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;
199 200
}

John Koleszar's avatar
John Koleszar committed
201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220
static void accumulate_stats(FIRSTPASS_STATS *section, FIRSTPASS_STATS *frame) {
  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;
221 222
}

John Koleszar's avatar
John Koleszar committed
223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242
static void subtract_stats(FIRSTPASS_STATS *section, FIRSTPASS_STATS *frame) {
  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;
243 244
}

John Koleszar's avatar
John Koleszar committed
245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264
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;
265 266
}

267 268 269 270
// Calculate a modified Error used in distributing bits between easier and
// harder frames.
static double calculate_modified_err(VP9_COMP *cpi,
                                     FIRSTPASS_STATS *this_frame) {
271 272 273
  const FIRSTPASS_STATS *const stats = &cpi->twopass.total_stats;
  const double av_err = stats->ssim_weighted_pred_err / stats->count;
  const double this_err = this_frame->ssim_weighted_pred_err;
274 275 276 277 278 279 280 281 282 283 284
  double modified_error;

  modified_error =  av_err * pow(this_err / DOUBLE_DIVIDE_CHECK(av_err),
                                 this_err > av_err ? POW1 : POW2);

  if (modified_error < cpi->twopass.modified_error_min)
    modified_error = cpi->twopass.modified_error_min;
  else if (modified_error > cpi->twopass.modified_error_max)
    modified_error = cpi->twopass.modified_error_max;

  return modified_error;
John Koleszar's avatar
John Koleszar committed
285 286
}

287
static const double weight_table[256] = {
288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324
  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
325 326
};

John Koleszar's avatar
John Koleszar committed
327 328 329
static double simple_weight(YV12_BUFFER_CONFIG *source) {
  int i, j;

330
  uint8_t *src = source->y_buffer;
John Koleszar's avatar
John Koleszar committed
331 332
  double sum_weights = 0.0;

333 334
  // Loop through the Y plane examining levels and creating a weight for
  // the image.
John Koleszar's avatar
John Koleszar committed
335 336 337 338 339 340 341 342 343 344 345 346 347 348
  i = source->y_height;
  do {
    j = source->y_width;
    do {
      sum_weights += weight_table[ *src];
      src++;
    } while (--j);
    src -= source->y_width;
    src += source->y_stride;
  } while (--i);

  sum_weights /= (source->y_height * source->y_width);

  return sum_weights;
John Koleszar's avatar
John Koleszar committed
349 350
}

351

352
// This function returns the current per frame maximum bitrate target.
353
static int frame_max_bits(VP9_COMP *cpi) {
354 355 356 357
  // Max allocation for a single frame based on the max section guidelines
  // passed in and how many bits are left.
  // For VBR base this on the bits and frames left plus the
  // two_pass_vbrmax_section rate passed in by the user.
358 359 360
  const double max_bits = (1.0 * cpi->twopass.bits_left /
      (cpi->twopass.total_stats.count - cpi->common.current_video_frame)) *
      (cpi->oxcf.two_pass_vbrmax_section / 100.0);
Yaowu Xu's avatar
Yaowu Xu committed
361 362 363 364 365
  if (max_bits < 0)
      return 0;
  if (max_bits >= INT_MAX)
    return INT_MAX;
  return (int)max_bits;
John Koleszar's avatar
John Koleszar committed
366 367
}

368
void vp9_init_first_pass(VP9_COMP *cpi) {
369
  zero_stats(&cpi->twopass.total_stats);
John Koleszar's avatar
John Koleszar committed
370 371
}

372
void vp9_end_first_pass(VP9_COMP *cpi) {
373
  output_stats(cpi, cpi->output_pkt_list, &cpi->twopass.total_stats);
374
}
John Koleszar's avatar
John Koleszar committed
375

376 377 378 379 380 381 382 383 384 385 386 387 388
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;
  }
}

Dmitry Kovalev's avatar
Dmitry Kovalev committed
389 390 391
static unsigned int zz_motion_search(VP9_COMP *cpi, MACROBLOCK *x,
                                     YV12_BUFFER_CONFIG *recon_buffer,
                                     int recon_yoffset) {
John Koleszar's avatar
John Koleszar committed
392
  MACROBLOCKD *const xd = &x->e_mbd;
Dmitry Kovalev's avatar
Dmitry Kovalev committed
393 394 395 396 397
  const uint8_t *const src = x->plane[0].src.buf;
  const int src_stride = x->plane[0].src.stride;
  const uint8_t *const ref = xd->plane[0].pre[0].buf
                           = recon_buffer->y_buffer + recon_yoffset;
  const int ref_stride = xd->plane[0].pre[0].stride;
John Koleszar's avatar
John Koleszar committed
398

Dmitry Kovalev's avatar
Dmitry Kovalev committed
399
  unsigned int sse;
400 401
  vp9_variance_fn_t fn = get_block_variance_fn(xd->mi_8x8[0]->mbmi.sb_type);
  fn(src, src_stride, ref, ref_stride, &sse);
Dmitry Kovalev's avatar
Dmitry Kovalev committed
402
  return sse;
403 404
}

405
static void first_pass_motion_search(VP9_COMP *cpi, MACROBLOCK *x,
406
                                     MV *ref_mv, MV *best_mv,
Scott LaVarnway's avatar
Scott LaVarnway committed
407
                                     YV12_BUFFER_CONFIG *recon_buffer,
John Koleszar's avatar
John Koleszar committed
408
                                     int *best_motion_err, int recon_yoffset) {
John Koleszar's avatar
John Koleszar committed
409
  MACROBLOCKD *const xd = &x->e_mbd;
John Koleszar's avatar
John Koleszar committed
410 411
  int num00;

412 413
  MV tmp_mv = {0, 0};
  MV ref_mv_full;
John Koleszar's avatar
John Koleszar committed
414 415 416 417 418

  int tmp_err;
  int step_param = 3;
  int further_steps = (MAX_MVSEARCH_STEPS - 1) - step_param;
  int n;
419
  vp9_variance_fn_ptr_t v_fn_ptr = cpi->fn_ptr[xd->mi_8x8[0]->mbmi.sb_type];
John Koleszar's avatar
John Koleszar committed
420 421
  int new_mv_mode_penalty = 256;

422
  int sr = 0;
423
  int quart_frm = MIN(cpi->common.width, cpi->common.height);
424 425 426 427 428 429 430 431 432

  // refine the motion search range accroding to the frame dimension
  // for first pass test
  while ((quart_frm << sr) < MAX_FULL_PEL_VAL)
    sr++;

  step_param    += sr;
  further_steps -= sr;

John Koleszar's avatar
John Koleszar committed
433
  // override the default variance function to use MSE
434
  v_fn_ptr.vf = get_block_variance_fn(xd->mi_8x8[0]->mbmi.sb_type);
John Koleszar's avatar
John Koleszar committed
435 436

  // Set up pointers for this macro block recon buffer
437
  xd->plane[0].pre[0].buf = recon_buffer->y_buffer + recon_yoffset;
John Koleszar's avatar
John Koleszar committed
438 439

  // Initial step/diamond search centred on best mv
440 441 442
  ref_mv_full.col = ref_mv->col >> 3;
  ref_mv_full.row = ref_mv->row >> 3;
  tmp_err = cpi->diamond_search_sad(x, &ref_mv_full, &tmp_mv,
443
                                    step_param,
John Koleszar's avatar
John Koleszar committed
444
                                    x->sadperbit16, &num00, &v_fn_ptr,
445
                                    x->nmvjointcost,
446
                                    x->mvcost, ref_mv);
John Koleszar's avatar
John Koleszar committed
447 448 449 450 451
  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;
452 453
    best_mv->row = tmp_mv.row;
    best_mv->col = tmp_mv.col;
John Koleszar's avatar
John Koleszar committed
454 455 456 457 458 459 460 461 462
  }

  // Further step/diamond searches as necessary
  n = num00;
  num00 = 0;

  while (n < further_steps) {
    n++;

463
    if (num00) {
John Koleszar's avatar
John Koleszar committed
464
      num00--;
465
    } else {
466
      tmp_err = cpi->diamond_search_sad(x, &ref_mv_full, &tmp_mv,
John Koleszar's avatar
John Koleszar committed
467 468
                                        step_param + n, x->sadperbit16,
                                        &num00, &v_fn_ptr,
469
                                        x->nmvjointcost,
470
                                        x->mvcost, ref_mv);
John Koleszar's avatar
John Koleszar committed
471
      if (tmp_err < INT_MAX - new_mv_mode_penalty)
John Koleszar's avatar
John Koleszar committed
472 473
        tmp_err += new_mv_mode_penalty;

John Koleszar's avatar
John Koleszar committed
474
      if (tmp_err < *best_motion_err) {
John Koleszar's avatar
John Koleszar committed
475
        *best_motion_err = tmp_err;
476 477
        best_mv->row = tmp_mv.row;
        best_mv->col = tmp_mv.col;
John Koleszar's avatar
John Koleszar committed
478
      }
John Koleszar's avatar
John Koleszar committed
479
    }
John Koleszar's avatar
John Koleszar committed
480
  }
John Koleszar's avatar
John Koleszar committed
481 482
}

483
void vp9_first_pass(VP9_COMP *cpi) {
John Koleszar's avatar
John Koleszar committed
484
  int mb_row, mb_col;
John Koleszar's avatar
John Koleszar committed
485
  MACROBLOCK *const x = &cpi->mb;
486
  VP9_COMMON *const cm = &cpi->common;
John Koleszar's avatar
John Koleszar committed
487
  MACROBLOCKD *const xd = &x->e_mbd;
James Zern's avatar
James Zern committed
488
  TileInfo tile;
489 490 491 492
  struct macroblock_plane *const p = x->plane;
  struct macroblockd_plane *const pd = xd->plane;
  PICK_MODE_CONTEXT *ctx = &x->sb64_context;
  int i;
John Koleszar's avatar
John Koleszar committed
493 494

  int recon_yoffset, recon_uvoffset;
495 496 497 498
  const int lst_yv12_idx = cm->ref_frame_map[cpi->lst_fb_idx];
  const int gld_yv12_idx = cm->ref_frame_map[cpi->gld_fb_idx];
  YV12_BUFFER_CONFIG *const lst_yv12 = &cm->yv12_fb[lst_yv12_idx];
  YV12_BUFFER_CONFIG *const gld_yv12 = &cm->yv12_fb[gld_yv12_idx];
499
  YV12_BUFFER_CONFIG *const new_yv12 = get_frame_new_buffer(cm);
500 501
  const int recon_y_stride = lst_yv12->y_stride;
  const int recon_uv_stride = lst_yv12->uv_stride;
Alex Converse's avatar
Alex Converse committed
502
  const int uv_mb_height = 16 >> (lst_yv12->y_height > lst_yv12->uv_height);
John Koleszar's avatar
John Koleszar committed
503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522
  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;
  int sum_mvrs = 0, sum_mvcs = 0;
  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;

  int_mv zero_ref_mv;

  zero_ref_mv.as_int = 0;

523
  vp9_clear_system_state();  // __asm emms;
John Koleszar's avatar
John Koleszar committed
524

John Koleszar's avatar
John Koleszar committed
525
  vp9_setup_src_planes(x, cpi->Source, 0, 0);
526
  setup_pre_planes(xd, 0, lst_yv12, 0, 0, NULL);
527
  setup_dst_planes(xd, new_yv12, 0, 0);
John Koleszar's avatar
John Koleszar committed
528

529 530 531
  xd->mi_8x8 = cm->mi_grid_visible;
  // required for vp9_frame_init_quantizer
  xd->mi_8x8[0] = cm->mi;
John Koleszar's avatar
John Koleszar committed
532

533
  setup_block_dptrs(&x->e_mbd, cm->subsampling_x, cm->subsampling_y);
John Koleszar's avatar
John Koleszar committed
534

535
  vp9_frame_init_quantizer(cpi);
John Koleszar's avatar
John Koleszar committed
536

537 538
  for (i = 0; i < MAX_MB_PLANE; ++i) {
    p[i].coeff = ctx->coeff_pbuf[i][1];
539
    p[i].qcoeff = ctx->qcoeff_pbuf[i][1];
540
    pd[i].dqcoeff = ctx->dqcoeff_pbuf[i][1];
541
    p[i].eobs = ctx->eobs_pbuf[i][1];
542
  }
543
  x->skip_recode = 0;
544 545


John Koleszar's avatar
John Koleszar committed
546 547 548 549
  // Initialise the MV cost table to the defaults
  // if( cm->current_video_frame == 0)
  // if ( 0 )
  {
550
    vp9_init_mv_probs(cm);
551
    vp9_initialize_rd_consts(cpi);
John Koleszar's avatar
John Koleszar committed
552 553
  }

James Zern's avatar
James Zern committed
554 555 556
  // tiling is ignored in the first pass
  vp9_tile_init(&tile, cm, 0, 0);

John Koleszar's avatar
John Koleszar committed
557 558 559 560 561 562 563 564 565
  // for each macroblock row in image
  for (mb_row = 0; mb_row < cm->mb_rows; mb_row++) {
    int_mv best_ref_mv;

    best_ref_mv.as_int = 0;

    // reset above block coeffs
    xd->up_available = (mb_row != 0);
    recon_yoffset = (mb_row * recon_y_stride * 16);
Alex Converse's avatar
Alex Converse committed
566
    recon_uvoffset = (mb_row * recon_uv_stride * uv_mb_height);
John Koleszar's avatar
John Koleszar committed
567

568 569 570
    // Set up limit values for motion vectors to prevent them extending
    // outside the UMV borders
    x->mv_row_min = -((mb_row * 16) + BORDER_MV_PIXELS_B16);
John Koleszar's avatar
John Koleszar committed
571
    x->mv_row_max = ((cm->mb_rows - 1 - mb_row) * 16)
572
                    + BORDER_MV_PIXELS_B16;
John Koleszar's avatar
John Koleszar committed
573 574 575 576 577 578

    // for each macroblock col in image
    for (mb_col = 0; mb_col < cm->mb_cols; mb_col++) {
      int this_error;
      int gf_motion_error = INT_MAX;
      int use_dc_pred = (mb_col || mb_row) && (!mb_col || !mb_row);
Dmitry Kovalev's avatar
Dmitry Kovalev committed
579
      double error_weight = 1.0;
580 581

      vp9_clear_system_state();  // __asm emms;
John Koleszar's avatar
John Koleszar committed
582

583 584 585
      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
586 587
      xd->left_available = (mb_col != 0);

588 589
      if (mb_col * 2 + 1 < cm->mi_cols) {
        if (mb_row * 2 + 1 < cm->mi_rows) {
590
          xd->mi_8x8[0]->mbmi.sb_type = BLOCK_16X16;
591
        } else {
592
          xd->mi_8x8[0]->mbmi.sb_type = BLOCK_16X8;
593 594 595
        }
      } else {
        if (mb_row * 2 + 1 < cm->mi_rows) {
596
          xd->mi_8x8[0]->mbmi.sb_type = BLOCK_8X16;
597
        } else {
598
          xd->mi_8x8[0]->mbmi.sb_type = BLOCK_8X8;
599 600
        }
      }
601
      xd->mi_8x8[0]->mbmi.ref_frame[0] = INTRA_FRAME;
James Zern's avatar
James Zern committed
602
      set_mi_row_col(xd, &tile,
603
                     mb_row << 1,
604
                     num_8x8_blocks_high_lookup[xd->mi_8x8[0]->mbmi.sb_type],
605
                     mb_col << 1,
606
                     num_8x8_blocks_wide_lookup[xd->mi_8x8[0]->mbmi.sb_type],
James Zern's avatar
James Zern committed
607
                     cm->mi_rows, cm->mi_cols);
Jingning Han's avatar
Jingning Han committed
608

609
      if (cpi->oxcf.aq_mode == VARIANCE_AQ) {
610
        int energy = vp9_block_energy(cpi, x, xd->mi_8x8[0]->mbmi.sb_type);
611 612 613
        error_weight = vp9_vaq_inv_q_ratio(energy);
      }

John Koleszar's avatar
John Koleszar committed
614
      // do intra 16x16 prediction
615
      this_error = vp9_encode_intra(x, use_dc_pred);
616
      if (cpi->oxcf.aq_mode == VARIANCE_AQ) {
617 618 619
        vp9_clear_system_state();  // __asm emms;
        this_error *= error_weight;
      }
John Koleszar's avatar
John Koleszar committed
620

621 622 623 624 625 626
      // intrapenalty below deals with situations where the intra and inter
      // error scores are very low (eg a plain black frame).
      // 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
627 628 629 630 631 632
      // This penalty adds a cost matching that of a 0,0 mv to the intra case.
      this_error += intrapenalty;

      // Cumulative intra error total
      intra_error += (int64_t)this_error;

633 634
      // Set up limit values for motion vectors to prevent them extending
      // outside the UMV borders.
635
      x->mv_col_min = -((mb_col * 16) + BORDER_MV_PIXELS_B16);
John Koleszar's avatar
John Koleszar committed
636
      x->mv_col_max = ((cm->mb_cols - 1 - mb_col) * 16)
637
                      + BORDER_MV_PIXELS_B16;
John Koleszar's avatar
John Koleszar committed
638 639 640 641

      // Other than for the first frame do a motion search
      if (cm->current_video_frame > 0) {
        int tmp_err;
Dmitry Kovalev's avatar
Dmitry Kovalev committed
642
        int motion_error = zz_motion_search(cpi, x, lst_yv12, recon_yoffset);
John Koleszar's avatar
John Koleszar committed
643 644 645 646 647 648
        int_mv mv, tmp_mv;
        // Simple 0,0 motion with no mv overhead
        mv.as_int = tmp_mv.as_int = 0;

        // Test last reference frame using the previous best mv as the
        // starting point (best reference) for the search
649 650
        first_pass_motion_search(cpi, x, &best_ref_mv.as_mv, &mv.as_mv,
                                 lst_yv12, &motion_error, recon_yoffset);
651
        if (cpi->oxcf.aq_mode == VARIANCE_AQ) {
652 653 654
          vp9_clear_system_state();  // __asm emms;
          motion_error *= error_weight;
        }
John Koleszar's avatar
John Koleszar committed
655

656 657
        // 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
658 659
        if (best_ref_mv.as_int) {
          tmp_err = INT_MAX;
660
          first_pass_motion_search(cpi, x, &zero_ref_mv.as_mv, &tmp_mv.as_mv,
John Koleszar's avatar
John Koleszar committed
661
                                   lst_yv12, &tmp_err, recon_yoffset);
662
          if (cpi->oxcf.aq_mode == VARIANCE_AQ) {
663 664 665
            vp9_clear_system_state();  // __asm emms;
            tmp_err *= error_weight;
          }
John Koleszar's avatar
John Koleszar committed
666 667 668 669 670 671

          if (tmp_err < motion_error) {
            motion_error = tmp_err;
            mv.as_int = tmp_mv.as_int;
          }
        }
John Koleszar's avatar
John Koleszar committed
672

John Koleszar's avatar
John Koleszar committed
673 674 675
        // Experimental search in an older reference frame
        if (cm->current_video_frame > 1) {
          // Simple 0,0 motion with no mv overhead
Dmitry Kovalev's avatar
Dmitry Kovalev committed
676
          gf_motion_error = zz_motion_search(cpi, x, gld_yv12, recon_yoffset);
John Koleszar's avatar
John Koleszar committed
677

678 679
          first_pass_motion_search(cpi, x, &zero_ref_mv.as_mv, &tmp_mv.as_mv,
                                   gld_yv12, &gf_motion_error, recon_yoffset);
680
          if (cpi->oxcf.aq_mode == VARIANCE_AQ) {
681 682 683
            vp9_clear_system_state();  // __asm emms;
            gf_motion_error *= error_weight;
          }
John Koleszar's avatar
John Koleszar committed
684 685 686 687 688 689 690

          if ((gf_motion_error < motion_error) &&
              (gf_motion_error < this_error)) {
            second_ref_count++;
          }

          // Reset to last frame as reference buffer
691 692 693
          xd->plane[0].pre[0].buf = lst_yv12->y_buffer + recon_yoffset;
          xd->plane[1].pre[0].buf = lst_yv12->u_buffer + recon_uvoffset;
          xd->plane[2].pre[0].buf = lst_yv12->v_buffer + recon_uvoffset;
John Koleszar's avatar
John Koleszar committed
694 695 696 697 698 699 700 701 702

          // 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.
          if (gf_motion_error < this_error)
            sr_coded_error += gf_motion_error;
          else
            sr_coded_error += this_error;
703
        } else {
John Koleszar's avatar
John Koleszar committed
704
          sr_coded_error += motion_error;
705
        }
John Koleszar's avatar
John Koleszar committed
706
        /* Intra assumed best */
707
        best_ref_mv.as_int = 0;
John Koleszar's avatar
John Koleszar committed
708

John Koleszar's avatar
John Koleszar committed
709 710 711 712 713
        if (motion_error <= this_error) {
          // 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
714 715
          if (((this_error - intrapenalty) * 9 <= motion_error * 10) &&
              this_error < 2 * intrapenalty)
John Koleszar's avatar
John Koleszar committed
716 717
            neutral_count++;

Yaowu Xu's avatar
Yaowu Xu committed
718 719
          mv.as_mv.row *= 8;
          mv.as_mv.col *= 8;
John Koleszar's avatar
John Koleszar committed
720
          this_error = motion_error;
721
          vp9_set_mbmode_and_mvs(x, NEWMV, &mv);
722 723 724
          xd->mi_8x8[0]->mbmi.tx_size = TX_4X4;
          xd->mi_8x8[0]->mbmi.ref_frame[0] = LAST_FRAME;
          xd->mi_8x8[0]->mbmi.ref_frame[1] = NONE;
Dmitry Kovalev's avatar
Dmitry Kovalev committed
725
          vp9_build_inter_predictors_sby(xd, mb_row << 1, mb_col << 1,
726 727
                                         xd->mi_8x8[0]->mbmi.sb_type);
          vp9_encode_sby(x, xd->mi_8x8[0]->mbmi.sb_type);
John Koleszar's avatar
John Koleszar committed
728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757
          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;
          intercount++;

          best_ref_mv.as_int = mv.as_int;

          // Was the vector non-zero
          if (mv.as_int) {
            mvcount++;

            // Was it different from the last non zero vector
            if (mv.as_int != lastmv_as_int)
              new_mv_count++;
            lastmv_as_int = mv.as_int;

            // Does the Row vector point inwards or outwards
            if (mb_row < cm->mb_rows / 2) {
              if (mv.as_mv.row > 0)
                sum_in_vectors--;
              else if (mv.as_mv.row < 0)
                sum_in_vectors++;
            } else if (mb_row > cm->mb_rows / 2) {
              if (mv.as_mv.row > 0)
                sum_in_vectors++;
              else if (mv.as_mv.row < 0)
                sum_in_vectors--;
John Koleszar's avatar
John Koleszar committed
758 759
            }

John Koleszar's avatar
John Koleszar committed
760 761 762 763 764 765 766 767 768 769 770 771 772
            // Does the Row vector point inwards or outwards
            if (mb_col < cm->mb_cols / 2) {
              if (mv.as_mv.col > 0)
                sum_in_vectors--;
              else if (mv.as_mv.col < 0)
                sum_in_vectors++;
            } else if (mb_col > cm->mb_cols / 2) {
              if (mv.as_mv.col > 0)
                sum_in_vectors++;
              else if (mv.as_mv.col < 0)
                sum_in_vectors--;
            }
          }
John Koleszar's avatar
John Koleszar committed
773
        }
774
      } else {
John Koleszar's avatar
John Koleszar committed
775
        sr_coded_error += (int64_t)this_error;
776
      }
John Koleszar's avatar
John Koleszar committed
777
      coded_error += (int64_t)this_error;
John Koleszar's avatar
John Koleszar committed
778

John Koleszar's avatar
John Koleszar committed
779
      // adjust to the next column of macroblocks
John Koleszar's avatar
John Koleszar committed
780
      x->plane[0].src.buf += 16;
Alex Converse's avatar
Alex Converse committed
781 782
      x->plane[1].src.buf += uv_mb_height;
      x->plane[2].src.buf += uv_mb_height;
John Koleszar's avatar
John Koleszar committed
783

John Koleszar's avatar
John Koleszar committed
784
      recon_yoffset += 16;
Alex Converse's avatar
Alex Converse committed
785
      recon_uvoffset += uv_mb_height;
John Koleszar's avatar
John Koleszar committed
786 787
    }

John Koleszar's avatar
John Koleszar committed
788
    // adjust to the next row of mbs
John Koleszar's avatar
John Koleszar committed
789
    x->plane[0].src.buf += 16 * x->plane[0].src.stride - 16 * cm->mb_cols;
Alex Converse's avatar
Alex Converse committed
790 791 792 793
    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
794

795
    vp9_clear_system_state();  // __asm emms;
John Koleszar's avatar
John Koleszar committed
796 797
  }

798
  vp9_clear_system_state();  // __asm emms;
John Koleszar's avatar
John Koleszar committed
799 800 801 802 803 804
  {
    double weight = 0.0;

    FIRSTPASS_STATS fps;

    fps.frame      = cm->current_video_frame;
805 806 807
    fps.intra_error = (double)(intra_error >> 8);
    fps.coded_error = (double)(coded_error >> 8);
    fps.sr_coded_error = (double)(sr_coded_error >> 8);
John Koleszar's avatar
John Koleszar committed
808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836
    weight = simple_weight(cpi->Source);


    if (weight < 0.1)
      weight = 0.1;

    fps.ssim_weighted_pred_err = fps.coded_error * weight;

    fps.pcnt_inter  = 0.0;
    fps.pcnt_motion = 0.0;
    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.count      = 1.0;

    fps.pcnt_inter   = 1.0 * (double)intercount / cm->MBs;
    fps.pcnt_second_ref = 1.0 * (double)second_ref_count / cm->MBs;
    fps.pcnt_neutral = 1.0 * (double)neutral_count / cm->MBs;

    if (mvcount > 0) {
      fps.MVr = (double)sum_mvr / (double)mvcount;
      fps.mvr_abs = (double)sum_mvr_abs / (double)mvcount;
      fps.MVc = (double)sum_mvc / (double)mvcount;
      fps.mvc_abs = (double)sum_mvc_abs / (double)mvcount;
837 838 839 840
      fps.MVrv = ((double)sum_mvrs - (fps.MVr * fps.MVr / (double)mvcount)) /
                 (double)mvcount;
      fps.MVcv = ((double)sum_mvcs - (fps.MVc * fps.MVc / (double)mvcount)) /
                 (double)mvcount;
John Koleszar's avatar
John Koleszar committed
841 842 843 844
      fps.mv_in_out_count = (double)sum_in_vectors / (double)(mvcount * 2);
      fps.new_mv_count = new_mv_count;

      fps.pcnt_motion = 1.0 * (double)mvcount / cpi->common.MBs;
Paul Wilkins's avatar
Paul Wilkins committed
845
    }
John Koleszar's avatar
John Koleszar committed
846

847 848 849
    // 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.
850 851
    fps.duration = (double)(cpi->source->ts_end
                            - cpi->source->ts_start);
John Koleszar's avatar
John Koleszar committed
852 853

    // don't want to do output stats with a stack variable!
854
    cpi->twopass.this_frame_stats = fps;
855 856
    output_stats(cpi, cpi->output_pkt_list, &cpi->twopass.this_frame_stats);
    accumulate_stats(&cpi->twopass.total_stats, &fps);
John Koleszar's avatar
John Koleszar committed
857 858 859 860 861 862
  }

  // Copy the previous Last Frame back into gf and and arf buffers if
  // the prediction is good enough... but also dont allow it to lag too far
  if ((cpi->twopass.sr_update_lag > 3) ||
      ((cm->current_video_frame > 0) &&
863 864 865
       (cpi->twopass.this_frame_stats.pcnt_inter > 0.20) &&
       ((cpi->twopass.this_frame_stats.intra_error /
         DOUBLE_DIVIDE_CHECK(cpi->twopass.this_frame_stats.coded_error)) >
866
        2.0))) {
John Koleszar's avatar
John Koleszar committed
867
    vp8_yv12_copy_frame(lst_yv12, gld_yv12);
John Koleszar's avatar
John Koleszar committed
868
    cpi->twopass.sr_update_lag = 1;
869
  } else {
John Koleszar's avatar
John Koleszar committed
870
    cpi->twopass.sr_update_lag++;
871
  }
John Koleszar's avatar
John Koleszar committed
872
  // swap frame pointers so last frame refers to the frame we just compressed
873 874
  swap_yv12(lst_yv12, new_yv12);

John Koleszar's avatar
John Koleszar committed
875
  vp9_extend_frame_borders(lst_yv12, cm->subsampling_x, cm->subsampling_y);
John Koleszar's avatar
John Koleszar committed
876

877 878
  // Special case for the first frame. Copy into the GF buffer as a second
  // reference.
879
  if (cm->current_video_frame == 0)
John Koleszar's avatar
John Koleszar committed
880
    vp8_yv12_copy_frame(lst_yv12, gld_yv12);
John Koleszar's avatar
John Koleszar committed
881

John Koleszar's avatar
John Koleszar committed
882 883 884 885
  // use this to see what the first pass reconstruction looks like
  if (0) {
    char filename[512];
    FILE *recon_file;
886 887
    snprintf(filename, sizeof(filename), "enc%04d.yuv",
             (int)cm->current_video_frame);
John Koleszar's avatar
John Koleszar committed
888

John Koleszar's avatar
John Koleszar committed
889 890 891 892 893
    if (cm->current_video_frame == 0)
      recon_file = fopen(filename, "wb");
    else
      recon_file = fopen(filename, "ab");

Frank Galligan's avatar
Frank Galligan committed
894
    (void)fwrite(lst_yv12->buffer_alloc, lst_yv12->frame_size, 1, recon_file);
John Koleszar's avatar
John Koleszar committed
895 896
    fclose(recon_file);
  }
John Koleszar's avatar
John Koleszar committed
897

John Koleszar's avatar
John Koleszar committed
898
  cm->current_video_frame++;
John Koleszar's avatar
John Koleszar committed
899 900
}

901 902 903 904 905 906
// Estimate a cost per mb attributable to overheads such as the coding of
// modes and motion vectors.
// Currently simplistic in its assumptions for testing.
//


907
static double bitcost(double prob) {
John Koleszar's avatar
John Koleszar committed
908
  return -(log(prob) / log(2.0));
909
}
910

911
static int64_t estimate_modemvcost(VP9_COMP *cpi,
John Koleszar's avatar
John Koleszar committed
912
                                     FIRSTPASS_STATS *fpstats) {
913
#if 0
John Koleszar's avatar
John Koleszar committed
914 915 916 917 918 919 920 921 922