libavcodec/svq1enc.c

   1 /*
   2  * SVQ1 Encoder
   3  * Copyright (C) 2004 Mike Melanson <melanson@pcisys.net>
   4  *
   5  * This file is part of FFmpeg.
   6  *
   7  * FFmpeg is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * FFmpeg is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with FFmpeg; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  20  */
  21
  22 /**
  23  * @file
  24  * Sorenson Vector Quantizer #1 (SVQ1) video codec.
  25  * For more information of the SVQ1 algorithm, visit:
  26  *   http://www.pcisys.net/~melanson/codecs/
  27  */
  28
  29 #include "avcodec.h"
  30 #include "dsputil.h"
  31 #include "hpeldsp.h"
  32 #include "mpegvideo.h"
  33 #include "h263.h"
  34 #include "internal.h"
  35 #include "libavutil/avassert.h"
  36 #include "svq1.h"
  37 #include "svq1enc_cb.h"
  38
  39
  40 typedef struct SVQ1Context {
  41     /* FIXME: Needed for motion estimation, should not be used for anything
  42      * else, the idea is to make the motion estimation eventually independent
  43      * of MpegEncContext, so this will be removed then. */
  44     MpegEncContext m;
  45     AVCodecContext *avctx;
  46     DSPContext dsp;
  47     HpelDSPContext hdsp;
  48     AVFrame picture;
  49     AVFrame current_picture;
  50     AVFrame last_picture;
  51     PutBitContext pb;
  52     GetBitContext gb;
  53
  54     /* why ooh why this sick breadth first order,
  55      * everything is slower and more complex */
  56     PutBitContext reorder_pb[6];
  57
  58     int frame_width;
  59     int frame_height;
  60
  61     /* Y plane block dimensions */
  62     int y_block_width;
  63     int y_block_height;
  64
  65     /* U & V plane (C planes) block dimensions */
  66     int c_block_width;
  67     int c_block_height;
  68
  69     uint16_t *mb_type;
  70     uint32_t *dummy;
  71     int16_t (*motion_val8[3])[2];
  72     int16_t (*motion_val16[3])[2];
  73
  74     int64_t rd_total;
  75
  76     uint8_t *scratchbuf;
  77 } SVQ1Context;
  78
  79 static void svq1_write_header(SVQ1Context *s, int frame_type)
  80 {
  81     int i;
  82
  83     /* frame code */
  84     put_bits(&s->pb, 22, 0x20);
  85
  86     /* temporal reference (sure hope this is a "don't care") */
  87     put_bits(&s->pb, 8, 0x00);
  88
  89     /* frame type */
  90     put_bits(&s->pb, 2, frame_type - 1);
  91
  92     if (frame_type == AV_PICTURE_TYPE_I) {
  93         /* no checksum since frame code is 0x20 */
  94         /* no embedded string either */
  95         /* output 5 unknown bits (2 + 2 + 1) */
  96         put_bits(&s->pb, 5, 2); /* 2 needed by quicktime decoder */
  97
  98         i = ff_match_2uint16((void*)ff_svq1_frame_size_table,
  99                              FF_ARRAY_ELEMS(ff_svq1_frame_size_table),
 100                              s->frame_width, s->frame_height);
 101         put_bits(&s->pb, 3, i);
 102
 103         if (i == 7) {
 104             put_bits(&s->pb, 12, s->frame_width);
 105             put_bits(&s->pb, 12, s->frame_height);
 106         }
 107     }
 108
 109     /* no checksum or extra data (next 2 bits get 0) */
 110     put_bits(&s->pb, 2, 0);
 111 }
 112
 113 #define QUALITY_THRESHOLD    100
 114 #define THRESHOLD_MULTIPLIER 0.6
 115
 116 static int encode_block(SVQ1Context *s, uint8_t *src, uint8_t *ref,
 117                         uint8_t *decoded, int stride, int level,
 118                         int threshold, int lambda, int intra)
 119 {
 120     int count, y, x, i, j, split, best_mean, best_score, best_count;
 121     int best_vector[6];
 122     int block_sum[7] = { 0, 0, 0, 0, 0, 0 };
 123     int w            = 2 << (level + 2 >> 1);
 124     int h            = 2 << (level + 1 >> 1);
 125     int size         = w * h;
 126     int16_t block[7][256];
 127     const int8_t *codebook_sum, *codebook;
 128     const uint16_t(*mean_vlc)[2];
 129     const uint8_t(*multistage_vlc)[2];
 130
 131     best_score = 0;
 132     // FIXME: Optimize, this does not need to be done multiple times.
 133     if (intra) {
 134         codebook_sum   = svq1_intra_codebook_sum[level];
 135         codebook       = ff_svq1_intra_codebooks[level];
 136         mean_vlc       = ff_svq1_intra_mean_vlc;
 137         multistage_vlc = ff_svq1_intra_multistage_vlc[level];
 138         for (y = 0; y < h; y++) {
 139             for (x = 0; x < w; x++) {
 140                 int v = src[x + y * stride];
 141                 block[0][x + w * y] = v;
 142                 best_score         += v * v;
 143                 block_sum[0]       += v;
 144             }
 145         }
 146     } else {
 147         codebook_sum   = svq1_inter_codebook_sum[level];
 148         codebook       = ff_svq1_inter_codebooks[level];
 149         mean_vlc       = ff_svq1_inter_mean_vlc + 256;
 150         multistage_vlc = ff_svq1_inter_multistage_vlc[level];
 151         for (y = 0; y < h; y++) {
 152             for (x = 0; x < w; x++) {
 153                 int v = src[x + y * stride] - ref[x + y * stride];
 154                 block[0][x + w * y] = v;
 155                 best_score         += v * v;
 156                 block_sum[0]       += v;
 157             }
 158         }
 159     }
 160
 161     best_count  = 0;
 162     best_score -= (int)((unsigned)block_sum[0] * block_sum[0] >> (level + 3));
 163     best_mean   = block_sum[0] + (size >> 1) >> (level + 3);
 164
 165     if (level < 4) {
 166         for (count = 1; count < 7; count++) {
 167             int best_vector_score = INT_MAX;
 168             int best_vector_sum   = -999, best_vector_mean = -999;
 169             const int stage       = count - 1;
 170             const int8_t *vector;
 171
 172             for (i = 0; i < 16; i++) {
 173                 int sum = codebook_sum[stage * 16 + i];
 174                 int sqr, diff, score;
 175
 176                 vector = codebook + stage * size * 16 + i * size;
 177                 sqr    = s->dsp.ssd_int8_vs_int16(vector, block[stage], size);
 178                 diff   = block_sum[stage] - sum;
 179                 score  = sqr - (diff * (int64_t)diff >> (level + 3)); // FIXME: 64bit slooow
 180                 if (score < best_vector_score) {
 181                     int mean = diff + (size >> 1) >> (level + 3);
 182                     av_assert2(mean > -300 && mean < 300);
 183                     mean               = av_clip(mean, intra ? 0 : -256, 255);
 184                     best_vector_score  = score;
 185                     best_vector[stage] = i;
 186                     best_vector_sum    = sum;
 187                     best_vector_mean   = mean;
 188                 }
 189             }
 190             av_assert0(best_vector_mean != -999);
 191             vector = codebook + stage * size * 16 + best_vector[stage] * size;
 192             for (j = 0; j < size; j++)
 193                 block[stage + 1][j] = block[stage][j] - vector[j];
 194             block_sum[stage + 1] = block_sum[stage] - best_vector_sum;
 195             best_vector_score   += lambda *
 196                                    (+1 + 4 * count +
 197                                     multistage_vlc[1 + count][1]
 198                                     + mean_vlc[best_vector_mean][1]);
 199
 200             if (best_vector_score < best_score) {
 201                 best_score = best_vector_score;
 202                 best_count = count;
 203                 best_mean  = best_vector_mean;
 204             }
 205         }
 206     }
 207
 208     split = 0;
 209     if (best_score > threshold && level) {
 210         int score  = 0;
 211         int offset = level & 1 ? stride * h / 2 : w / 2;
 212         PutBitContext backup[6];
 213
 214         for (i = level - 1; i >= 0; i--)
 215             backup[i] = s->reorder_pb[i];
 216         score += encode_block(s, src, ref, decoded, stride, level - 1,
 217                               threshold >> 1, lambda, intra);
 218         score += encode_block(s, src + offset, ref + offset, decoded + offset,
 219                               stride, level - 1, threshold >> 1, lambda, intra);
 220         score += lambda;
 221
 222         if (score < best_score) {
 223             best_score = score;
 224             split      = 1;
 225         } else {
 226             for (i = level - 1; i >= 0; i--)
 227                 s->reorder_pb[i] = backup[i];
 228         }
 229     }
 230     if (level > 0)
 231         put_bits(&s->reorder_pb[level], 1, split);
 232
 233     if (!split) {
 234         av_assert1(best_mean >= 0 && best_mean < 256 || !intra);
 235         av_assert1(best_mean >= -256 && best_mean < 256);
 236         av_assert1(best_count >= 0 && best_count < 7);
 237         av_assert1(level < 4 || best_count == 0);
 238
 239         /* output the encoding */
 240         put_bits(&s->reorder_pb[level],
 241                  multistage_vlc[1 + best_count][1],
 242                  multistage_vlc[1 + best_count][0]);
 243         put_bits(&s->reorder_pb[level], mean_vlc[best_mean][1],
 244                  mean_vlc[best_mean][0]);
 245
 246         for (i = 0; i < best_count; i++) {
 247             av_assert2(best_vector[i] >= 0 && best_vector[i] < 16);
 248             put_bits(&s->reorder_pb[level], 4, best_vector[i]);
 249         }
 250
 251         for (y = 0; y < h; y++)
 252             for (x = 0; x < w; x++)
 253                 decoded[x + y * stride] = src[x + y * stride] -
 254                                           block[best_count][x + w * y] +
 255                                           best_mean;
 256     }
 257
 258     return best_score;
 259 }
 260
 261 static int svq1_encode_plane(SVQ1Context *s, int plane,
 262                              unsigned char *src_plane,
 263                              unsigned char *ref_plane,
 264                              unsigned char *decoded_plane,
 265                              int width, int height, int src_stride, int stride)
 266 {
 267     int x, y;
 268     int i;
 269     int block_width, block_height;
 270     int level;
 271     int threshold[6];
 272     uint8_t *src     = s->scratchbuf + stride * 16;
 273     const int lambda = (s->picture.quality * s->picture.quality) >>
 274                        (2 * FF_LAMBDA_SHIFT);
 275
 276     /* figure out the acceptable level thresholds in advance */
 277     threshold[5] = QUALITY_THRESHOLD;
 278     for (level = 4; level >= 0; level--)
 279         threshold[level] = threshold[level + 1] * THRESHOLD_MULTIPLIER;
 280
 281     block_width  = (width  + 15) / 16;
 282     block_height = (height + 15) / 16;
 283
 284     if (s->picture.pict_type == AV_PICTURE_TYPE_P) {
 285         s->m.avctx                         = s->avctx;
 286         s->m.current_picture_ptr           = &s->m.current_picture;
 287         s->m.last_picture_ptr              = &s->m.last_picture;
 288         s->m.last_picture.f.data[0]        = ref_plane;
 289         s->m.linesize                      =
 290         s->m.last_picture.f.linesize[0]    =
 291         s->m.new_picture.f.linesize[0]     =
 292         s->m.current_picture.f.linesize[0] = stride;
 293         s->m.width                         = width;
 294         s->m.height                        = height;
 295         s->m.mb_width                      = block_width;
 296         s->m.mb_height                     = block_height;
 297         s->m.mb_stride                     = s->m.mb_width + 1;
 298         s->m.b8_stride                     = 2 * s->m.mb_width + 1;
 299         s->m.f_code                        = 1;
 300         s->m.pict_type                     = s->picture.pict_type;
 301         s->m.me_method                     = s->avctx->me_method;
 302         s->m.me.scene_change_score         = 0;
 303         s->m.flags                         = s->avctx->flags;
 304         // s->m.out_format                    = FMT_H263;
 305         // s->m.unrestricted_mv               = 1;
 306         s->m.lambda                        = s->picture.quality;
 307         s->m.qscale                        = s->m.lambda * 139 +
 308                                              FF_LAMBDA_SCALE * 64 >>
 309                                              FF_LAMBDA_SHIFT + 7;
 310         s->m.lambda2                       = s->m.lambda * s->m.lambda +
 311                                              FF_LAMBDA_SCALE / 2 >>
 312                                              FF_LAMBDA_SHIFT;
 313
 314         if (!s->motion_val8[plane]) {
 315             s->motion_val8[plane]  = av_mallocz((s->m.b8_stride *
 316                                                  block_height * 2 + 2) *
 317                                                 2 * sizeof(int16_t));
 318             s->motion_val16[plane] = av_mallocz((s->m.mb_stride *
 319                                                  (block_height + 2) + 1) *
 320                                                 2 * sizeof(int16_t));
 321         }
 322
 323         s->m.mb_type = s->mb_type;
 324
 325         // dummies, to avoid segfaults
 326         s->m.current_picture.mb_mean   = (uint8_t *)s->dummy;
 327         s->m.current_picture.mb_var    = (uint16_t *)s->dummy;
 328         s->m.current_picture.mc_mb_var = (uint16_t *)s->dummy;
 329         s->m.current_picture.mb_type = s->dummy;
 330
 331         s->m.current_picture.motion_val[0]   = s->motion_val8[plane] + 2;
 332         s->m.p_mv_table                      = s->motion_val16[plane] +
 333                                                s->m.mb_stride + 1;
 334         s->m.dsp                             = s->dsp; // move
 335         ff_init_me(&s->m);
 336
 337         s->m.me.dia_size      = s->avctx->dia_size;
 338         s->m.first_slice_line = 1;
 339         for (y = 0; y < block_height; y++) {
 340             s->m.new_picture.f.data[0] = src - y * 16 * stride; // ugly
 341             s->m.mb_y                  = y;
 342
 343             for (i = 0; i < 16 && i + 16 * y < height; i++) {
 344                 memcpy(&src[i * stride], &src_plane[(i + 16 * y) * src_stride],
 345                        width);
 346                 for (x = width; x < 16 * block_width; x++)
 347                     src[i * stride + x] = src[i * stride + x - 1];
 348             }
 349             for (; i < 16 && i + 16 * y < 16 * block_height; i++)
 350                 memcpy(&src[i * stride], &src[(i - 1) * stride],
 351                        16 * block_width);
 352
 353             for (x = 0; x < block_width; x++) {
 354                 s->m.mb_x = x;
 355                 ff_init_block_index(&s->m);
 356                 ff_update_block_index(&s->m);
 357
 358                 ff_estimate_p_frame_motion(&s->m, x, y);
 359             }
 360             s->m.first_slice_line = 0;
 361         }
 362
 363         ff_fix_long_p_mvs(&s->m);
 364         ff_fix_long_mvs(&s->m, NULL, 0, s->m.p_mv_table, s->m.f_code,
 365                         CANDIDATE_MB_TYPE_INTER, 0);
 366     }
 367
 368     s->m.first_slice_line = 1;
 369     for (y = 0; y < block_height; y++) {
 370         for (i = 0; i < 16 && i + 16 * y < height; i++) {
 371             memcpy(&src[i * stride], &src_plane[(i + 16 * y) * src_stride],
 372                    width);
 373             for (x = width; x < 16 * block_width; x++)
 374                 src[i * stride + x] = src[i * stride + x - 1];
 375         }
 376         for (; i < 16 && i + 16 * y < 16 * block_height; i++)
 377             memcpy(&src[i * stride], &src[(i - 1) * stride], 16 * block_width);
 378
 379         s->m.mb_y = y;
 380         for (x = 0; x < block_width; x++) {
 381             uint8_t reorder_buffer[3][6][7 * 32];
 382             int count[3][6];
 383             int offset       = y * 16 * stride + x * 16;
 384             uint8_t *decoded = decoded_plane + offset;
 385             uint8_t *ref     = ref_plane + offset;
 386             int score[4]     = { 0, 0, 0, 0 }, best;
 387             uint8_t *temp    = s->scratchbuf;
 388
 389             if (s->pb.buf_end - s->pb.buf -
 390                 (put_bits_count(&s->pb) >> 3) < 3000) { // FIXME: check size
 391                 av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
 392                 return -1;
 393             }
 394
 395             s->m.mb_x = x;
 396             ff_init_block_index(&s->m);
 397             ff_update_block_index(&s->m);
 398
 399             if (s->picture.pict_type == AV_PICTURE_TYPE_I ||
 400                 (s->m.mb_type[x + y * s->m.mb_stride] &
 401                  CANDIDATE_MB_TYPE_INTRA)) {
 402                 for (i = 0; i < 6; i++)
 403                     init_put_bits(&s->reorder_pb[i], reorder_buffer[0][i],
 404                                   7 * 32);
 405                 if (s->picture.pict_type == AV_PICTURE_TYPE_P) {
 406                     const uint8_t *vlc = ff_svq1_block_type_vlc[SVQ1_BLOCK_INTRA];
 407                     put_bits(&s->reorder_pb[5], vlc[1], vlc[0]);
 408                     score[0] = vlc[1] * lambda;
 409                 }
 410                 score[0] += encode_block(s, src + 16 * x, NULL, temp, stride,
 411                                          5, 64, lambda, 1);
 412                 for (i = 0; i < 6; i++) {
 413                     count[0][i] = put_bits_count(&s->reorder_pb[i]);
 414                     flush_put_bits(&s->reorder_pb[i]);
 415                 }
 416             } else
 417                 score[0] = INT_MAX;
 418
 419             best = 0;
 420
 421             if (s->picture.pict_type == AV_PICTURE_TYPE_P) {
 422                 const uint8_t *vlc = ff_svq1_block_type_vlc[SVQ1_BLOCK_INTER];
 423                 int mx, my, pred_x, pred_y, dxy;
 424                 int16_t *motion_ptr;
 425
 426                 motion_ptr = ff_h263_pred_motion(&s->m, 0, 0, &pred_x, &pred_y);
 427                 if (s->m.mb_type[x + y * s->m.mb_stride] &
 428                     CANDIDATE_MB_TYPE_INTER) {
 429                     for (i = 0; i < 6; i++)
 430                         init_put_bits(&s->reorder_pb[i], reorder_buffer[1][i],
 431                                       7 * 32);
 432
 433                     put_bits(&s->reorder_pb[5], vlc[1], vlc[0]);
 434
 435                     s->m.pb = s->reorder_pb[5];
 436                     mx      = motion_ptr[0];
 437                     my      = motion_ptr[1];
 438                     av_assert1(mx     >= -32 && mx     <= 31);
 439                     av_assert1(my     >= -32 && my     <= 31);
 440                     av_assert1(pred_x >= -32 && pred_x <= 31);
 441                     av_assert1(pred_y >= -32 && pred_y <= 31);
 442                     ff_h263_encode_motion(&s->m, mx - pred_x, 1);
 443                     ff_h263_encode_motion(&s->m, my - pred_y, 1);
 444                     s->reorder_pb[5] = s->m.pb;
 445                     score[1]        += lambda * put_bits_count(&s->reorder_pb[5]);
 446
 447                     dxy = (mx & 1) + 2 * (my & 1);
 448
 449                     s->hdsp.put_pixels_tab[0][dxy](temp + 16,
 450                                                    ref + (mx >> 1) +
 451                                                    stride * (my >> 1),
 452                                                    stride, 16);
 453
 454                     score[1] += encode_block(s, src + 16 * x, temp + 16,
 455                                              decoded, stride, 5, 64, lambda, 0);
 456                     best      = score[1] <= score[0];
 457
 458                     vlc       = ff_svq1_block_type_vlc[SVQ1_BLOCK_SKIP];
 459                     score[2]  = s->dsp.sse[0](NULL, src + 16 * x, ref,
 460                                               stride, 16);
 461                     score[2] += vlc[1] * lambda;
 462                     if (score[2] < score[best] && mx == 0 && my == 0) {
 463                         best = 2;
 464                         s->hdsp.put_pixels_tab[0][0](decoded, ref, stride, 16);
 465                         for (i = 0; i < 6; i++)
 466                             count[2][i] = 0;
 467                         put_bits(&s->pb, vlc[1], vlc[0]);
 468                     }
 469                 }
 470
 471                 if (best == 1) {
 472                     for (i = 0; i < 6; i++) {
 473                         count[1][i] = put_bits_count(&s->reorder_pb[i]);
 474                         flush_put_bits(&s->reorder_pb[i]);
 475                     }
 476                 } else {
 477                     motion_ptr[0]                      =
 478                     motion_ptr[1]                      =
 479                     motion_ptr[2]                      =
 480                     motion_ptr[3]                      =
 481                     motion_ptr[0 + 2 * s->m.b8_stride] =
 482                     motion_ptr[1 + 2 * s->m.b8_stride] =
 483                     motion_ptr[2 + 2 * s->m.b8_stride] =
 484                     motion_ptr[3 + 2 * s->m.b8_stride] = 0;
 485                 }
 486             }
 487
 488             s->rd_total += score[best];
 489
 490             for (i = 5; i >= 0; i--)
 491                 avpriv_copy_bits(&s->pb, reorder_buffer[best][i],
 492                                  count[best][i]);
 493             if (best == 0)
 494                 s->hdsp.put_pixels_tab[0][0](decoded, temp, stride, 16);
 495         }
 496         s->m.first_slice_line = 0;
 497     }
 498     return 0;
 499 }
 500
 501 static av_cold int svq1_encode_init(AVCodecContext *avctx)
 502 {
 503     SVQ1Context *const s = avctx->priv_data;
 504
 505     ff_dsputil_init(&s->dsp, avctx);
 506     ff_hpeldsp_init(&s->hdsp, avctx->flags);
 507     avctx->coded_frame = &s->picture;
 508
 509     s->frame_width  = avctx->width;
 510     s->frame_height = avctx->height;
 511
 512     s->y_block_width  = (s->frame_width  + 15) / 16;
 513     s->y_block_height = (s->frame_height + 15) / 16;
 514
 515     s->c_block_width  = (s->frame_width  / 4 + 15) / 16;
 516     s->c_block_height = (s->frame_height / 4 + 15) / 16;
 517
 518     s->avctx               = avctx;
 519     s->m.avctx             = avctx;
 520     s->m.picture_structure = PICT_FRAME;
 521     s->m.me.temp           =
 522     s->m.me.scratchpad     = av_mallocz((avctx->width + 64) *
 523                                         2 * 16 * 2 * sizeof(uint8_t));
 524     s->m.me.map            = av_mallocz(ME_MAP_SIZE * sizeof(uint32_t));
 525     s->m.me.score_map      = av_mallocz(ME_MAP_SIZE * sizeof(uint32_t));
 526     s->mb_type             = av_mallocz((s->y_block_width + 1) *
 527                                         s->y_block_height * sizeof(int16_t));
 528     s->dummy               = av_mallocz((s->y_block_width + 1) *
 529                                         s->y_block_height * sizeof(int32_t));
 530     ff_h263_encode_init(&s->m); // mv_penalty
 531
 532     return 0;
 533 }
 534
 535 static int svq1_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
 536                              const AVFrame *pict, int *got_packet)
 537 {
 538     SVQ1Context *const s = avctx->priv_data;
 539     AVFrame *const p     = &s->picture;
 540     AVFrame temp;
 541     int i, ret;
 542
 543     if ((ret = ff_alloc_packet2(avctx, pkt, s->y_block_width * s->y_block_height *
 544                              MAX_MB_BYTES*3 + FF_MIN_BUFFER_SIZE)) < 0)
 545         return ret;
 546
 547     if (avctx->pix_fmt != AV_PIX_FMT_YUV410P) {
 548         av_log(avctx, AV_LOG_ERROR, "unsupported pixel format\n");
 549         return -1;
 550     }
 551
 552     if (!s->current_picture.data[0]) {
 553         if ((ret = ff_get_buffer(avctx, &s->current_picture, 0))< 0 ||
 554             (ret = ff_get_buffer(avctx, &s->last_picture, 0))   < 0) {
 555             return ret;
 556         }
 557         s->scratchbuf = av_malloc(s->current_picture.linesize[0] * 16 * 2);
 558     }
 559
 560     av_frame_move_ref(&temp, &s->current_picture);
 561     av_frame_move_ref(&s->current_picture, &s->last_picture);
 562     av_frame_move_ref(&s->last_picture, &temp);
 563
 564     init_put_bits(&s->pb, pkt->data, pkt->size);
 565
 566     *p           = *pict;
 567     p->pict_type = avctx->gop_size && avctx->frame_number % avctx->gop_size ?
 568                    AV_PICTURE_TYPE_P : AV_PICTURE_TYPE_I;
 569     p->key_frame = p->pict_type == AV_PICTURE_TYPE_I;
 570
 571     svq1_write_header(s, p->pict_type);
 572     for (i = 0; i < 3; i++)
 573         if (svq1_encode_plane(s, i,
 574                               s->picture.data[i],
 575                               s->last_picture.data[i],
 576                               s->current_picture.data[i],
 577                               s->frame_width  / (i ? 4 : 1),
 578                               s->frame_height / (i ? 4 : 1),
 579                               s->picture.linesize[i],
 580                               s->current_picture.linesize[i]) < 0)
 581             return -1;
 582
 583     // avpriv_align_put_bits(&s->pb);
 584     while (put_bits_count(&s->pb) & 31)
 585         put_bits(&s->pb, 1, 0);
 586
 587     flush_put_bits(&s->pb);
 588
 589     pkt->size = put_bits_count(&s->pb) / 8;
 590     if (p->pict_type == AV_PICTURE_TYPE_I)
 591         pkt->flags |= AV_PKT_FLAG_KEY;
 592     *got_packet = 1;
 593
 594     return 0;
 595 }
 596
 597 static av_cold int svq1_encode_end(AVCodecContext *avctx)
 598 {
 599     SVQ1Context *const s = avctx->priv_data;
 600     int i;
 601
 602     av_log(avctx, AV_LOG_DEBUG, "RD: %f\n",
 603            s->rd_total / (double)(avctx->width * avctx->height *
 604                                   avctx->frame_number));
 605
 606     av_freep(&s->m.me.scratchpad);
 607     av_freep(&s->m.me.map);
 608     av_freep(&s->m.me.score_map);
 609     av_freep(&s->mb_type);
 610     av_freep(&s->dummy);
 611     av_freep(&s->scratchbuf);
 612
 613     for (i = 0; i < 3; i++) {
 614         av_freep(&s->motion_val8[i]);
 615         av_freep(&s->motion_val16[i]);
 616     }
 617
 618     av_frame_unref(&s->current_picture);
 619     av_frame_unref(&s->last_picture);
 620
 621     return 0;
 622 }
 623
 624 AVCodec ff_svq1_encoder = {
 625     .name           = "svq1",
 626     .long_name      = NULL_IF_CONFIG_SMALL("Sorenson Vector Quantizer 1 / Sorenson Video 1 / SVQ1"),
 627     .type           = AVMEDIA_TYPE_VIDEO,
 628     .id             = AV_CODEC_ID_SVQ1,
 629     .priv_data_size = sizeof(SVQ1Context),
 630     .init           = svq1_encode_init,
 631     .encode2        = svq1_encode_frame,
 632     .close          = svq1_encode_end,
 633     .pix_fmts       = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV410P,
 634                                                      AV_PIX_FMT_NONE },
 635 };