libavcodec/svq1enc.c

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