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