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   1 /*
   2  * Copyright (c) 2015-2016 Kieran Kunhya <kieran@kunhya.com>
   3  *
   4  * This file is part of FFmpeg.
   5  *
   6  * FFmpeg is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * FFmpeg is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with FFmpeg; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  19  */
  20
  21 /**
  22  * @file
  23  * Cineform HD video decoder
  24  */
  25
  26 #include "libavutil/attributes.h"
  27 #include "libavutil/buffer.h"
  28 #include "libavutil/common.h"
  29 #include "libavutil/imgutils.h"
  30 #include "libavutil/intreadwrite.h"
  31 #include "libavutil/opt.h"
  32
  33 #include "avcodec.h"
  34 #include "bytestream.h"
  35 #include "get_bits.h"
  36 #include "internal.h"
  37 #include "thread.h"
  38 #include "cfhd.h"
  39
  40 #define ALPHA_COMPAND_DC_OFFSET 256
  41 #define ALPHA_COMPAND_GAIN 9400
  42
  43 static av_cold int cfhd_init(AVCodecContext *avctx)
  44 {
  45     CFHDContext *s = avctx->priv_data;
  46
  47     s->avctx                   = avctx;
  48
  49     for (int i = 0; i < 64; i++) {
  50         int val = i;
  51
  52         if (val >= 40) {
  53             if (val >= 54) {
  54                 val -= 54;
  55                 val <<= 2;
  56                 val += 54;
  57             }
  58
  59             val -= 40;
  60             val <<= 2;
  61             val += 40;
  62         }
  63
  64         s->lut[0][i] = val;
  65     }
  66
  67     for (int i = 0; i < 256; i++)
  68         s->lut[1][i] = i + ((768LL * i * i * i) / (256 * 256 * 256));
  69
  70     return ff_cfhd_init_vlcs(s);
  71 }
  72
  73 static void init_plane_defaults(CFHDContext *s)
  74 {
  75     s->subband_num        = 0;
  76     s->level              = 0;
  77     s->subband_num_actual = 0;
  78 }
  79
  80 static void init_peak_table_defaults(CFHDContext *s)
  81 {
  82     s->peak.level  = 0;
  83     s->peak.offset = 0;
  84     memset(&s->peak.base, 0, sizeof(s->peak.base));
  85 }
  86
  87 static void init_frame_defaults(CFHDContext *s)
  88 {
  89     s->coded_width       = 0;
  90     s->coded_height      = 0;
  91     s->coded_format      = AV_PIX_FMT_YUV422P10;
  92     s->cropped_height    = 0;
  93     s->bpc               = 10;
  94     s->channel_cnt       = 3;
  95     s->subband_cnt       = SUBBAND_COUNT;
  96     s->channel_num       = 0;
  97     s->lowpass_precision = 16;
  98     s->quantisation      = 1;
  99     s->codebook          = 0;
 100     s->difference_coding = 0;
 101     s->frame_type        = 0;
 102     s->sample_type       = 0;
 103     if (s->transform_type != 2)
 104         s->transform_type = -1;
 105     init_plane_defaults(s);
 106     init_peak_table_defaults(s);
 107 }
 108
 109 static inline int dequant_and_decompand(CFHDContext *s, int level, int quantisation, int codebook)
 110 {
 111     if (codebook == 0 || codebook == 1) {
 112         return s->lut[codebook][abs(level)] * FFSIGN(level) * quantisation;
 113     } else
 114         return level * quantisation;
 115 }
 116
 117 static inline void difference_coding(int16_t *band, int width, int height)
 118 {
 119
 120     int i,j;
 121     for (i = 0; i < height; i++) {
 122         for (j = 1; j < width; j++) {
 123           band[j] += band[j-1];
 124         }
 125         band += width;
 126     }
 127 }
 128
 129 static inline void peak_table(int16_t *band, Peak *peak, int length)
 130 {
 131     int i;
 132     for (i = 0; i < length; i++)
 133         if (abs(band[i]) > peak->level)
 134             band[i] = bytestream2_get_le16(&peak->base);
 135 }
 136
 137 static inline void process_alpha(int16_t *alpha, int width)
 138 {
 139     int i, channel;
 140     for (i = 0; i < width; i++) {
 141         channel   = alpha[i];
 142         channel  -= ALPHA_COMPAND_DC_OFFSET;
 143         channel <<= 3;
 144         channel  *= ALPHA_COMPAND_GAIN;
 145         channel >>= 16;
 146         channel   = av_clip_uintp2(channel, 12);
 147         alpha[i]  = channel;
 148     }
 149 }
 150
 151 static inline void process_bayer(AVFrame *frame, int bpc)
 152 {
 153     const int linesize = frame->linesize[0];
 154     uint16_t *r = (uint16_t *)frame->data[0];
 155     uint16_t *g1 = (uint16_t *)(frame->data[0] + 2);
 156     uint16_t *g2 = (uint16_t *)(frame->data[0] + frame->linesize[0]);
 157     uint16_t *b = (uint16_t *)(frame->data[0] + frame->linesize[0] + 2);
 158     const int mid = 1 << (bpc - 1);
 159     const int factor = 1 << (16 - bpc);
 160
 161     for (int y = 0; y < frame->height >> 1; y++) {
 162         for (int x = 0; x < frame->width; x += 2) {
 163             int R, G1, G2, B;
 164             int g, rg, bg, gd;
 165
 166             g  = r[x];
 167             rg = g1[x];
 168             bg = g2[x];
 169             gd = b[x];
 170             gd -= mid;
 171
 172             R  = (rg - mid) * 2 + g;
 173             G1 = g + gd;
 174             G2 = g - gd;
 175             B  = (bg - mid) * 2 + g;
 176
 177             R  = av_clip_uintp2(R  * factor, 16);
 178             G1 = av_clip_uintp2(G1 * factor, 16);
 179             G2 = av_clip_uintp2(G2 * factor, 16);
 180             B  = av_clip_uintp2(B  * factor, 16);
 181
 182             r[x]  = R;
 183             g1[x] = G1;
 184             g2[x] = G2;
 185             b[x]  = B;
 186         }
 187
 188         r  += linesize;
 189         g1 += linesize;
 190         g2 += linesize;
 191         b  += linesize;
 192     }
 193 }
 194
 195 static inline void interlaced_vertical_filter(int16_t *output, int16_t *low, int16_t *high,
 196                          int width, int linesize, int plane)
 197 {
 198     int i;
 199     int16_t even, odd;
 200     for (i = 0; i < width; i++) {
 201         even = (low[i] - high[i])/2;
 202         odd  = (low[i] + high[i])/2;
 203         output[i]            = av_clip_uintp2(even, 10);
 204         output[i + linesize] = av_clip_uintp2(odd, 10);
 205     }
 206 }
 207
 208 static inline void inverse_temporal_filter(int16_t *low, int16_t *high, int width)
 209 {
 210     for (int i = 0; i < width; i++) {
 211         int even = (low[i] - high[i]) / 2;
 212         int odd  = (low[i] + high[i]) / 2;
 213
 214         low[i]  = even;
 215         high[i] = odd;
 216     }
 217 }
 218
 219 static void free_buffers(CFHDContext *s)
 220 {
 221     int i, j;
 222
 223     for (i = 0; i < FF_ARRAY_ELEMS(s->plane); i++) {
 224         av_freep(&s->plane[i].idwt_buf);
 225         av_freep(&s->plane[i].idwt_tmp);
 226         s->plane[i].idwt_size = 0;
 227
 228         for (j = 0; j < SUBBAND_COUNT_3D; j++)
 229             s->plane[i].subband[j] = NULL;
 230
 231         for (j = 0; j < 10; j++)
 232             s->plane[i].l_h[j] = NULL;
 233     }
 234     s->a_height = 0;
 235     s->a_width  = 0;
 236     s->a_transform_type = INT_MIN;
 237 }
 238
 239 static int alloc_buffers(AVCodecContext *avctx)
 240 {
 241     CFHDContext *s = avctx->priv_data;
 242     int i, j, ret, planes, bayer = 0;
 243     int chroma_x_shift, chroma_y_shift;
 244     unsigned k;
 245
 246     if ((ret = ff_set_dimensions(avctx, s->coded_width, s->coded_height)) < 0)
 247         return ret;
 248     avctx->pix_fmt = s->coded_format;
 249
 250     ff_cfhddsp_init(&s->dsp, s->bpc, avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16);
 251
 252     if ((ret = av_pix_fmt_get_chroma_sub_sample(s->coded_format,
 253                                                 &chroma_x_shift,
 254                                                 &chroma_y_shift)) < 0)
 255         return ret;
 256     planes = av_pix_fmt_count_planes(s->coded_format);
 257     if (s->coded_format == AV_PIX_FMT_BAYER_RGGB16) {
 258         planes = 4;
 259         chroma_x_shift = 1;
 260         chroma_y_shift = 1;
 261         bayer = 1;
 262     }
 263
 264     for (i = 0; i < planes; i++) {
 265         int w8, h8, w4, h4, w2, h2;
 266         int width  = (i || bayer) ? s->coded_width  >> chroma_x_shift : s->coded_width;
 267         int height = (i || bayer) ? s->coded_height >> chroma_y_shift : s->coded_height;
 268         ptrdiff_t stride = (FFALIGN(width  / 8, 8) + 64) * 8;
 269
 270         if (chroma_y_shift && !bayer)
 271             height = FFALIGN(height / 8, 2) * 8;
 272         s->plane[i].width  = width;
 273         s->plane[i].height = height;
 274         s->plane[i].stride = stride;
 275
 276         w8 = FFALIGN(s->plane[i].width  / 8, 8) + 64;
 277         h8 = FFALIGN(height, 8) / 8;
 278         w4 = w8 * 2;
 279         h4 = h8 * 2;
 280         w2 = w4 * 2;
 281         h2 = h4 * 2;
 282
 283         if (s->transform_type == 0) {
 284             s->plane[i].idwt_size = FFALIGN(height, 8) * stride;
 285             s->plane[i].idwt_buf =
 286                 av_mallocz_array(s->plane[i].idwt_size, sizeof(*s->plane[i].idwt_buf));
 287             s->plane[i].idwt_tmp =
 288                 av_malloc_array(s->plane[i].idwt_size, sizeof(*s->plane[i].idwt_tmp));
 289         } else {
 290             s->plane[i].idwt_size = FFALIGN(height, 8) * stride * 2;
 291             s->plane[i].idwt_buf =
 292                 av_mallocz_array(s->plane[i].idwt_size, sizeof(*s->plane[i].idwt_buf));
 293             s->plane[i].idwt_tmp =
 294                 av_malloc_array(s->plane[i].idwt_size, sizeof(*s->plane[i].idwt_tmp));
 295         }
 296
 297         if (!s->plane[i].idwt_buf || !s->plane[i].idwt_tmp)
 298             return AVERROR(ENOMEM);
 299
 300         s->plane[i].subband[0] = s->plane[i].idwt_buf;
 301         s->plane[i].subband[1] = s->plane[i].idwt_buf + 2 * w8 * h8;
 302         s->plane[i].subband[2] = s->plane[i].idwt_buf + 1 * w8 * h8;
 303         s->plane[i].subband[3] = s->plane[i].idwt_buf + 3 * w8 * h8;
 304         s->plane[i].subband[4] = s->plane[i].idwt_buf + 2 * w4 * h4;
 305         s->plane[i].subband[5] = s->plane[i].idwt_buf + 1 * w4 * h4;
 306         s->plane[i].subband[6] = s->plane[i].idwt_buf + 3 * w4 * h4;
 307         if (s->transform_type == 0) {
 308             s->plane[i].subband[7] = s->plane[i].idwt_buf + 2 * w2 * h2;
 309             s->plane[i].subband[8] = s->plane[i].idwt_buf + 1 * w2 * h2;
 310             s->plane[i].subband[9] = s->plane[i].idwt_buf + 3 * w2 * h2;
 311         } else {
 312             int16_t *frame2 =
 313             s->plane[i].subband[7]  = s->plane[i].idwt_buf + 4 * w2 * h2;
 314             s->plane[i].subband[8]  = frame2 + 2 * w4 * h4;
 315             s->plane[i].subband[9]  = frame2 + 1 * w4 * h4;
 316             s->plane[i].subband[10] = frame2 + 3 * w4 * h4;
 317             s->plane[i].subband[11] = frame2 + 2 * w2 * h2;
 318             s->plane[i].subband[12] = frame2 + 1 * w2 * h2;
 319             s->plane[i].subband[13] = frame2 + 3 * w2 * h2;
 320             s->plane[i].subband[14] = s->plane[i].idwt_buf + 2 * w2 * h2;
 321             s->plane[i].subband[15] = s->plane[i].idwt_buf + 1 * w2 * h2;
 322             s->plane[i].subband[16] = s->plane[i].idwt_buf + 3 * w2 * h2;
 323         }
 324
 325         if (s->transform_type == 0) {
 326             for (j = 0; j < DWT_LEVELS; j++) {
 327                 for (k = 0; k < FF_ARRAY_ELEMS(s->plane[i].band[j]); k++) {
 328                     s->plane[i].band[j][k].a_width  = w8 << j;
 329                     s->plane[i].band[j][k].a_height = h8 << j;
 330                 }
 331             }
 332         } else {
 333             for (j = 0; j < DWT_LEVELS_3D; j++) {
 334                 int t = j < 1 ? 0 : (j < 3 ? 1 : 2);
 335
 336                 for (k = 0; k < FF_ARRAY_ELEMS(s->plane[i].band[j]); k++) {
 337                     s->plane[i].band[j][k].a_width  = w8 << t;
 338                     s->plane[i].band[j][k].a_height = h8 << t;
 339                 }
 340             }
 341         }
 342
 343         /* ll2 and ll1 commented out because they are done in-place */
 344         s->plane[i].l_h[0] = s->plane[i].idwt_tmp;
 345         s->plane[i].l_h[1] = s->plane[i].idwt_tmp + 2 * w8 * h8;
 346         // s->plane[i].l_h[2] = ll2;
 347         s->plane[i].l_h[3] = s->plane[i].idwt_tmp;
 348         s->plane[i].l_h[4] = s->plane[i].idwt_tmp + 2 * w4 * h4;
 349         // s->plane[i].l_h[5] = ll1;
 350         s->plane[i].l_h[6] = s->plane[i].idwt_tmp;
 351         s->plane[i].l_h[7] = s->plane[i].idwt_tmp + 2 * w2 * h2;
 352         if (s->transform_type != 0) {
 353             int16_t *frame2 = s->plane[i].idwt_tmp + 4 * w2 * h2;
 354
 355             s->plane[i].l_h[8] = frame2;
 356             s->plane[i].l_h[9] = frame2 + 2 * w2 * h2;
 357         }
 358     }
 359
 360     s->a_transform_type = s->transform_type;
 361     s->a_height = s->coded_height;
 362     s->a_width  = s->coded_width;
 363     s->a_format = s->coded_format;
 364
 365     return 0;
 366 }
 367
 368 static int cfhd_decode(AVCodecContext *avctx, void *data, int *got_frame,
 369                        AVPacket *avpkt)
 370 {
 371     CFHDContext *s = avctx->priv_data;
 372     CFHDDSPContext *dsp = &s->dsp;
 373     GetByteContext gb;
 374     ThreadFrame frame = { .f = data };
 375     AVFrame *pic = data;
 376     int ret = 0, i, j, plane, got_buffer = 0;
 377     int16_t *coeff_data;
 378
 379     init_frame_defaults(s);
 380     s->planes = av_pix_fmt_count_planes(s->coded_format);
 381
 382     bytestream2_init(&gb, avpkt->data, avpkt->size);
 383
 384     while (bytestream2_get_bytes_left(&gb) >= 4) {
 385         /* Bit weird but implement the tag parsing as the spec says */
 386         uint16_t tagu   = bytestream2_get_be16(&gb);
 387         int16_t tag     = (int16_t)tagu;
 388         int8_t tag8     = (int8_t)(tagu >> 8);
 389         uint16_t abstag = abs(tag);
 390         int8_t abs_tag8 = abs(tag8);
 391         uint16_t data   = bytestream2_get_be16(&gb);
 392         if (abs_tag8 >= 0x60 && abs_tag8 <= 0x6f) {
 393             av_log(avctx, AV_LOG_DEBUG, "large len %x\n", ((tagu & 0xff) << 16) | data);
 394         } else if (tag == SampleFlags) {
 395             av_log(avctx, AV_LOG_DEBUG, "Progressive? %"PRIu16"\n", data);
 396             s->progressive = data & 0x0001;
 397         } else if (tag == FrameType) {
 398             s->frame_type = data;
 399             av_log(avctx, AV_LOG_DEBUG, "Frame type %"PRIu16"\n", data);
 400         } else if (abstag == VersionMajor) {
 401             av_log(avctx, AV_LOG_DEBUG, "Version major %"PRIu16"\n", data);
 402         } else if (abstag == VersionMinor) {
 403             av_log(avctx, AV_LOG_DEBUG, "Version minor %"PRIu16"\n", data);
 404         } else if (abstag == VersionRevision) {
 405             av_log(avctx, AV_LOG_DEBUG, "Version revision %"PRIu16"\n", data);
 406         } else if (abstag == VersionEdit) {
 407             av_log(avctx, AV_LOG_DEBUG, "Version edit %"PRIu16"\n", data);
 408         } else if (abstag == Version) {
 409             av_log(avctx, AV_LOG_DEBUG, "Version %"PRIu16"\n", data);
 410         } else if (tag == ImageWidth) {
 411             av_log(avctx, AV_LOG_DEBUG, "Width %"PRIu16"\n", data);
 412             s->coded_width = data;
 413         } else if (tag == ImageHeight) {
 414             av_log(avctx, AV_LOG_DEBUG, "Height %"PRIu16"\n", data);
 415             s->coded_height = data;
 416         } else if (tag == ChannelCount) {
 417             av_log(avctx, AV_LOG_DEBUG, "Channel Count: %"PRIu16"\n", data);
 418             s->channel_cnt = data;
 419             if (data > 4) {
 420                 av_log(avctx, AV_LOG_ERROR, "Channel Count of %"PRIu16" is unsupported\n", data);
 421                 ret = AVERROR_PATCHWELCOME;
 422                 goto end;
 423             }
 424         } else if (tag == SubbandCount) {
 425             av_log(avctx, AV_LOG_DEBUG, "Subband Count: %"PRIu16"\n", data);
 426             if (data != SUBBAND_COUNT && data != SUBBAND_COUNT_3D) {
 427                 av_log(avctx, AV_LOG_ERROR, "Subband Count of %"PRIu16" is unsupported\n", data);
 428                 ret = AVERROR_PATCHWELCOME;
 429                 goto end;
 430             }
 431         } else if (tag == ChannelNumber) {
 432             s->channel_num = data;
 433             av_log(avctx, AV_LOG_DEBUG, "Channel number %"PRIu16"\n", data);
 434             if (s->channel_num >= s->planes) {
 435                 av_log(avctx, AV_LOG_ERROR, "Invalid channel number\n");
 436                 ret = AVERROR(EINVAL);
 437                 goto end;
 438             }
 439             init_plane_defaults(s);
 440         } else if (tag == SubbandNumber) {
 441             if (s->subband_num != 0 && data == 1 && (s->transform_type == 0 || s->transform_type == 2))  // hack
 442                 s->level++;
 443             av_log(avctx, AV_LOG_DEBUG, "Subband number %"PRIu16"\n", data);
 444             s->subband_num = data;
 445             if ((s->transform_type == 0 && s->level >= DWT_LEVELS) ||
 446                 (s->transform_type == 2 && s->level >= DWT_LEVELS_3D)) {
 447                 av_log(avctx, AV_LOG_ERROR, "Invalid level\n");
 448                 ret = AVERROR(EINVAL);
 449                 goto end;
 450             }
 451             if (s->subband_num > 3) {
 452                 av_log(avctx, AV_LOG_ERROR, "Invalid subband number\n");
 453                 ret = AVERROR(EINVAL);
 454                 goto end;
 455             }
 456         } else if (tag == SubbandBand) {
 457             av_log(avctx, AV_LOG_DEBUG, "Subband number actual %"PRIu16"\n", data);
 458             if ((s->transform_type == 0 && data >= SUBBAND_COUNT) ||
 459                 (s->transform_type == 2 && data >= SUBBAND_COUNT_3D && data != 255)) {
 460                 av_log(avctx, AV_LOG_ERROR, "Invalid subband number actual\n");
 461                 ret = AVERROR(EINVAL);
 462                 goto end;
 463             }
 464             if (s->transform_type == 0 || s->transform_type == 2)
 465                 s->subband_num_actual = data;
 466             else
 467                 av_log(avctx, AV_LOG_WARNING, "Ignoring subband num actual %"PRIu16"\n", data);
 468         } else if (tag == LowpassPrecision)
 469             av_log(avctx, AV_LOG_DEBUG, "Lowpass precision bits: %"PRIu16"\n", data);
 470         else if (tag == Quantization) {
 471             s->quantisation = data;
 472             av_log(avctx, AV_LOG_DEBUG, "Quantisation: %"PRIu16"\n", data);
 473         } else if (tag == PrescaleTable) {
 474             for (i = 0; i < 8; i++)
 475                 s->prescale_table[i] = (data >> (14 - i * 2)) & 0x3;
 476             av_log(avctx, AV_LOG_DEBUG, "Prescale table: %x\n", data);
 477         } else if (tag == BandEncoding) {
 478             if (!data || data > 5) {
 479                 av_log(avctx, AV_LOG_ERROR, "Invalid band encoding\n");
 480                 ret = AVERROR(EINVAL);
 481                 goto end;
 482             }
 483             s->band_encoding = data;
 484             av_log(avctx, AV_LOG_DEBUG, "Encode Method for Subband %d : %x\n", s->subband_num_actual, data);
 485         } else if (tag == LowpassWidth) {
 486             av_log(avctx, AV_LOG_DEBUG, "Lowpass width %"PRIu16"\n", data);
 487             s->plane[s->channel_num].band[0][0].width  = data;
 488             s->plane[s->channel_num].band[0][0].stride = data;
 489         } else if (tag == LowpassHeight) {
 490             av_log(avctx, AV_LOG_DEBUG, "Lowpass height %"PRIu16"\n", data);
 491             s->plane[s->channel_num].band[0][0].height = data;
 492         } else if (tag == SampleType) {
 493             s->sample_type = data;
 494             av_log(avctx, AV_LOG_DEBUG, "Sample type? %"PRIu16"\n", data);
 495         } else if (tag == TransformType) {
 496             if (data > 2) {
 497                 av_log(avctx, AV_LOG_ERROR, "Invalid transform type\n");
 498                 ret = AVERROR(EINVAL);
 499                 goto end;
 500             } else if (data == 1) {
 501                 av_log(avctx, AV_LOG_ERROR, "unsupported transform type\n");
 502                 ret = AVERROR_PATCHWELCOME;
 503                 goto end;
 504             }
 505             if (s->transform_type == -1) {
 506                 s->transform_type = data;
 507                 av_log(avctx, AV_LOG_DEBUG, "Transform type %"PRIu16"\n", data);
 508             } else {
 509                 av_log(avctx, AV_LOG_DEBUG, "Ignoring additional transform type %"PRIu16"\n", data);
 510             }
 511         } else if (abstag >= 0x4000 && abstag <= 0x40ff) {
 512             if (abstag == 0x4001)
 513                 s->peak.level = 0;
 514             av_log(avctx, AV_LOG_DEBUG, "Small chunk length %d %s\n", data * 4, tag < 0 ? "optional" : "required");
 515             bytestream2_skipu(&gb, data * 4);
 516         } else if (tag == FrameIndex) {
 517             av_log(avctx, AV_LOG_DEBUG, "Frame index %"PRIu16"\n", data);
 518             s->frame_index = data;
 519         } else if (tag == SampleIndexTable) {
 520             av_log(avctx, AV_LOG_DEBUG, "Sample index table - skipping %i values\n", data);
 521             if (data > bytestream2_get_bytes_left(&gb) / 4) {
 522                 av_log(avctx, AV_LOG_ERROR, "too many values (%d)\n", data);
 523                 ret = AVERROR_INVALIDDATA;
 524                 goto end;
 525             }
 526             for (i = 0; i < data; i++) {
 527                 uint32_t offset = bytestream2_get_be32(&gb);
 528                 av_log(avctx, AV_LOG_DEBUG, "Offset = %"PRIu32"\n", offset);
 529             }
 530         } else if (tag == HighpassWidth) {
 531             av_log(avctx, AV_LOG_DEBUG, "Highpass width %i channel %i level %i subband %i\n", data, s->channel_num, s->level, s->subband_num);
 532             if (data < 3) {
 533                 av_log(avctx, AV_LOG_ERROR, "Invalid highpass width\n");
 534                 ret = AVERROR(EINVAL);
 535                 goto end;
 536             }
 537             s->plane[s->channel_num].band[s->level][s->subband_num].width  = data;
 538             s->plane[s->channel_num].band[s->level][s->subband_num].stride = FFALIGN(data, 8);
 539         } else if (tag == HighpassHeight) {
 540             av_log(avctx, AV_LOG_DEBUG, "Highpass height %i\n", data);
 541             if (data < 3) {
 542                 av_log(avctx, AV_LOG_ERROR, "Invalid highpass height\n");
 543                 ret = AVERROR(EINVAL);
 544                 goto end;
 545             }
 546             s->plane[s->channel_num].band[s->level][s->subband_num].height = data;
 547         } else if (tag == BandWidth) {
 548             av_log(avctx, AV_LOG_DEBUG, "Highpass width2 %i\n", data);
 549             if (data < 3) {
 550                 av_log(avctx, AV_LOG_ERROR, "Invalid highpass width2\n");
 551                 ret = AVERROR(EINVAL);
 552                 goto end;
 553             }
 554             s->plane[s->channel_num].band[s->level][s->subband_num].width  = data;
 555             s->plane[s->channel_num].band[s->level][s->subband_num].stride = FFALIGN(data, 8);
 556         } else if (tag == BandHeight) {
 557             av_log(avctx, AV_LOG_DEBUG, "Highpass height2 %i\n", data);
 558             if (data < 3) {
 559                 av_log(avctx, AV_LOG_ERROR, "Invalid highpass height2\n");
 560                 ret = AVERROR(EINVAL);
 561                 goto end;
 562             }
 563             s->plane[s->channel_num].band[s->level][s->subband_num].height = data;
 564         } else if (tag == InputFormat) {
 565             av_log(avctx, AV_LOG_DEBUG, "Input format %i\n", data);
 566             if (s->coded_format == AV_PIX_FMT_NONE ||
 567                 s->coded_format == AV_PIX_FMT_YUV422P10) {
 568                 if (data >= 100 && data <= 105) {
 569                     s->coded_format = AV_PIX_FMT_BAYER_RGGB16;
 570                 } else if (data >= 122 && data <= 128) {
 571                     s->coded_format = AV_PIX_FMT_GBRP12;
 572                 } else if (data == 30) {
 573                     s->coded_format = AV_PIX_FMT_GBRAP12;
 574                 } else {
 575                     s->coded_format = AV_PIX_FMT_YUV422P10;
 576                 }
 577                 s->planes = s->coded_format == AV_PIX_FMT_BAYER_RGGB16 ? 4 : av_pix_fmt_count_planes(s->coded_format);
 578             }
 579         } else if (tag == BandCodingFlags) {
 580             s->codebook = data & 0xf;
 581             s->difference_coding = (data >> 4) & 1;
 582             av_log(avctx, AV_LOG_DEBUG, "Other codebook? %i\n", s->codebook);
 583         } else if (tag == Precision) {
 584             av_log(avctx, AV_LOG_DEBUG, "Precision %i\n", data);
 585             if (!(data == 10 || data == 12)) {
 586                 av_log(avctx, AV_LOG_ERROR, "Invalid bits per channel\n");
 587                 ret = AVERROR(EINVAL);
 588                 goto end;
 589             }
 590             avctx->bits_per_raw_sample = s->bpc = data;
 591         } else if (tag == EncodedFormat) {
 592             av_log(avctx, AV_LOG_DEBUG, "Sample format? %i\n", data);
 593             if (data == 1) {
 594                 s->coded_format = AV_PIX_FMT_YUV422P10;
 595             } else if (data == 2) {
 596                 s->coded_format = AV_PIX_FMT_BAYER_RGGB16;
 597             } else if (data == 3) {
 598                 s->coded_format = AV_PIX_FMT_GBRP12;
 599             } else if (data == 4) {
 600                 s->coded_format = AV_PIX_FMT_GBRAP12;
 601             } else {
 602                 avpriv_report_missing_feature(avctx, "Sample format of %"PRIu16, data);
 603                 ret = AVERROR_PATCHWELCOME;
 604                 goto end;
 605             }
 606             s->planes = data == 2 ? 4 : av_pix_fmt_count_planes(s->coded_format);
 607         } else if (tag == -DisplayHeight) {
 608             av_log(avctx, AV_LOG_DEBUG, "Cropped height %"PRIu16"\n", data);
 609             s->cropped_height = data;
 610         } else if (tag == -PeakOffsetLow) {
 611             s->peak.offset &= ~0xffff;
 612             s->peak.offset |= (data & 0xffff);
 613             s->peak.base    = gb;
 614             s->peak.level   = 0;
 615         } else if (tag == -PeakOffsetHigh) {
 616             s->peak.offset &= 0xffff;
 617             s->peak.offset |= (data & 0xffffU)<<16;
 618             s->peak.base    = gb;
 619             s->peak.level   = 0;
 620         } else if (tag == -PeakLevel && s->peak.offset) {
 621             s->peak.level = data;
 622             if (s->peak.offset < 4 - bytestream2_tell(&s->peak.base) ||
 623                 s->peak.offset > 4 + bytestream2_get_bytes_left(&s->peak.base)
 624             ) {
 625                 ret = AVERROR_INVALIDDATA;
 626                 goto end;
 627             }
 628             bytestream2_seek(&s->peak.base, s->peak.offset - 4, SEEK_CUR);
 629         } else
 630             av_log(avctx, AV_LOG_DEBUG,  "Unknown tag %i data %x\n", tag, data);
 631
 632         if (tag == BitstreamMarker && data == 0xf0f &&
 633             s->coded_format != AV_PIX_FMT_NONE) {
 634             int lowpass_height = s->plane[s->channel_num].band[0][0].height;
 635             int lowpass_width  = s->plane[s->channel_num].band[0][0].width;
 636             int factor = s->coded_format == AV_PIX_FMT_BAYER_RGGB16 ? 2 : 1;
 637
 638             if (s->coded_width) {
 639                 s->coded_width *= factor;
 640             }
 641
 642             if (s->coded_height) {
 643                 s->coded_height *= factor;
 644             }
 645
 646             if (!s->a_width && !s->coded_width) {
 647                 s->coded_width = lowpass_width * factor * 8;
 648             }
 649
 650             if (!s->a_height && !s->coded_height) {
 651                 s->coded_height = lowpass_height * factor * 8;
 652             }
 653
 654             if (s->a_width && !s->coded_width)
 655                 s->coded_width = s->a_width;
 656             if (s->a_height && !s->coded_height)
 657                 s->coded_height = s->a_height;
 658
 659             if (s->a_width != s->coded_width || s->a_height != s->coded_height ||
 660                 s->a_format != s->coded_format ||
 661                 s->transform_type != s->a_transform_type) {
 662                 free_buffers(s);
 663                 if ((ret = alloc_buffers(avctx)) < 0) {
 664                     free_buffers(s);
 665                     return ret;
 666                 }
 667             }
 668             ret = ff_set_dimensions(avctx, s->coded_width, s->coded_height);
 669             if (ret < 0)
 670                 return ret;
 671             if (s->cropped_height) {
 672                 unsigned height = s->cropped_height << (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16);
 673                 if (avctx->height < height)
 674                     return AVERROR_INVALIDDATA;
 675                 avctx->height = height;
 676             }
 677             frame.f->width =
 678             frame.f->height = 0;
 679
 680             if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0)
 681                 return ret;
 682
 683             s->coded_width = 0;
 684             s->coded_height = 0;
 685             s->coded_format = AV_PIX_FMT_NONE;
 686             got_buffer = 1;
 687         } else if (tag == FrameIndex && data == 1 && s->sample_type == 1 && s->frame_type == 2) {
 688             frame.f->width =
 689             frame.f->height = 0;
 690
 691             if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0)
 692                 return ret;
 693             s->coded_width = 0;
 694             s->coded_height = 0;
 695             s->coded_format = AV_PIX_FMT_NONE;
 696             got_buffer = 1;
 697         }
 698
 699         if (s->subband_num_actual == 255)
 700             goto finish;
 701         coeff_data = s->plane[s->channel_num].subband[s->subband_num_actual];
 702
 703         /* Lowpass coefficients */
 704         if (tag == BitstreamMarker && data == 0xf0f) {
 705             int lowpass_height, lowpass_width, lowpass_a_height, lowpass_a_width;
 706
 707             if (!s->a_width || !s->a_height) {
 708                 ret = AVERROR_INVALIDDATA;
 709                 goto end;
 710             }
 711
 712             lowpass_height = s->plane[s->channel_num].band[0][0].height;
 713             lowpass_width  = s->plane[s->channel_num].band[0][0].width;
 714             lowpass_a_height = s->plane[s->channel_num].band[0][0].a_height;
 715             lowpass_a_width  = s->plane[s->channel_num].band[0][0].a_width;
 716
 717             if (lowpass_width < 3 ||
 718                 lowpass_width > lowpass_a_width) {
 719                 av_log(avctx, AV_LOG_ERROR, "Invalid lowpass width\n");
 720                 ret = AVERROR(EINVAL);
 721                 goto end;
 722             }
 723
 724             if (lowpass_height < 3 ||
 725                 lowpass_height > lowpass_a_height) {
 726                 av_log(avctx, AV_LOG_ERROR, "Invalid lowpass height\n");
 727                 ret = AVERROR(EINVAL);
 728                 goto end;
 729             }
 730
 731             if (!got_buffer) {
 732                 av_log(avctx, AV_LOG_ERROR, "No end of header tag found\n");
 733                 ret = AVERROR(EINVAL);
 734                 goto end;
 735             }
 736
 737             if (lowpass_height > lowpass_a_height || lowpass_width > lowpass_a_width ||
 738                 lowpass_width * lowpass_height * sizeof(int16_t) > bytestream2_get_bytes_left(&gb)) {
 739                 av_log(avctx, AV_LOG_ERROR, "Too many lowpass coefficients\n");
 740                 ret = AVERROR(EINVAL);
 741                 goto end;
 742             }
 743
 744             av_log(avctx, AV_LOG_DEBUG, "Start of lowpass coeffs component %d height:%d, width:%d\n", s->channel_num, lowpass_height, lowpass_width);
 745             for (i = 0; i < lowpass_height; i++) {
 746                 for (j = 0; j < lowpass_width; j++)
 747                     coeff_data[j] = bytestream2_get_be16u(&gb);
 748
 749                 coeff_data += lowpass_width;
 750             }
 751
 752             /* Align to mod-4 position to continue reading tags */
 753             bytestream2_seek(&gb, bytestream2_tell(&gb) & 3, SEEK_CUR);
 754
 755             /* Copy last line of coefficients if odd height */
 756             if (lowpass_height & 1) {
 757                 memcpy(&coeff_data[lowpass_height * lowpass_width],
 758                        &coeff_data[(lowpass_height - 1) * lowpass_width],
 759                        lowpass_width * sizeof(*coeff_data));
 760             }
 761
 762             av_log(avctx, AV_LOG_DEBUG, "Lowpass coefficients %d\n", lowpass_width * lowpass_height);
 763         }
 764
 765         av_assert0(s->subband_num_actual != 255);
 766         if (tag == BandHeader || tag == BandSecondPass) {
 767             int highpass_height, highpass_width, highpass_a_width, highpass_a_height, highpass_stride, a_expected;
 768             int expected;
 769             int level, run, coeff;
 770             int count = 0, bytes;
 771
 772             if (!s->a_width || !s->a_height) {
 773                 ret = AVERROR_INVALIDDATA;
 774                 goto end;
 775             }
 776
 777             highpass_height = s->plane[s->channel_num].band[s->level][s->subband_num].height;
 778             highpass_width  = s->plane[s->channel_num].band[s->level][s->subband_num].width;
 779             highpass_a_width = s->plane[s->channel_num].band[s->level][s->subband_num].a_width;
 780             highpass_a_height = s->plane[s->channel_num].band[s->level][s->subband_num].a_height;
 781             highpass_stride = s->plane[s->channel_num].band[s->level][s->subband_num].stride;
 782             a_expected = highpass_a_height * highpass_a_width;
 783
 784             if (!got_buffer) {
 785                 av_log(avctx, AV_LOG_ERROR, "No end of header tag found\n");
 786                 ret = AVERROR(EINVAL);
 787                 goto end;
 788             }
 789
 790             if (highpass_height > highpass_a_height || highpass_width > highpass_a_width || a_expected < highpass_height * (uint64_t)highpass_stride) {
 791                 av_log(avctx, AV_LOG_ERROR, "Too many highpass coefficients\n");
 792                 ret = AVERROR(EINVAL);
 793                 goto end;
 794             }
 795             expected = highpass_height * highpass_stride;
 796
 797             av_log(avctx, AV_LOG_DEBUG, "Start subband coeffs plane %i level %i codebook %i expected %i\n", s->channel_num, s->level, s->codebook, expected);
 798
 799             ret = init_get_bits8(&s->gb, gb.buffer, bytestream2_get_bytes_left(&gb));
 800             if (ret < 0)
 801                 goto end;
 802             {
 803                 OPEN_READER(re, &s->gb);
 804
 805                 const int lossless = s->band_encoding == 5;
 806
 807                 if (s->codebook == 0 && s->transform_type == 2 && s->subband_num_actual == 7)
 808                     s->codebook = 1;
 809                 if (!s->codebook) {
 810                     while (1) {
 811                         UPDATE_CACHE(re, &s->gb);
 812                         GET_RL_VLC(level, run, re, &s->gb, s->table_9_rl_vlc,
 813                                    VLC_BITS, 3, 1);
 814
 815                         /* escape */
 816                         if (level == 64)
 817                             break;
 818
 819                         count += run;
 820
 821                         if (count > expected)
 822                             break;
 823
 824                         if (!lossless)
 825                             coeff = dequant_and_decompand(s, level, s->quantisation, 0);
 826                         else
 827                             coeff = level;
 828                         if (tag == BandSecondPass) {
 829                             const uint16_t q = s->quantisation;
 830
 831                             for (i = 0; i < run; i++) {
 832                                 *coeff_data |= coeff * 256;
 833                                 *coeff_data++ *= q;
 834                             }
 835                         } else {
 836                             for (i = 0; i < run; i++)
 837                                 *coeff_data++ = coeff;
 838                         }
 839                     }
 840                 } else {
 841                     while (1) {
 842                         UPDATE_CACHE(re, &s->gb);
 843                         GET_RL_VLC(level, run, re, &s->gb, s->table_18_rl_vlc,
 844                                    VLC_BITS, 3, 1);
 845
 846                         /* escape */
 847                         if (level == 255 && run == 2)
 848                             break;
 849
 850                         count += run;
 851
 852                         if (count > expected)
 853                             break;
 854
 855                         if (!lossless)
 856                             coeff = dequant_and_decompand(s, level, s->quantisation, s->codebook);
 857                         else
 858                             coeff = level;
 859                         if (tag == BandSecondPass) {
 860                             const uint16_t q = s->quantisation;
 861
 862                             for (i = 0; i < run; i++) {
 863                                 *coeff_data |= coeff * 256;
 864                                 *coeff_data++ *= q;
 865                             }
 866                         } else {
 867                             for (i = 0; i < run; i++)
 868                                 *coeff_data++ = coeff;
 869                         }
 870                     }
 871                 }
 872                 CLOSE_READER(re, &s->gb);
 873             }
 874
 875             if (count > expected) {
 876                 av_log(avctx, AV_LOG_ERROR, "Escape codeword not found, probably corrupt data\n");
 877                 ret = AVERROR(EINVAL);
 878                 goto end;
 879             }
 880             if (s->peak.level)
 881                 peak_table(coeff_data - count, &s->peak, count);
 882             if (s->difference_coding)
 883                 difference_coding(s->plane[s->channel_num].subband[s->subband_num_actual], highpass_width, highpass_height);
 884
 885             bytes = FFALIGN(AV_CEIL_RSHIFT(get_bits_count(&s->gb), 3), 4);
 886             if (bytes > bytestream2_get_bytes_left(&gb)) {
 887                 av_log(avctx, AV_LOG_ERROR, "Bitstream overread error\n");
 888                 ret = AVERROR(EINVAL);
 889                 goto end;
 890             } else
 891                 bytestream2_seek(&gb, bytes, SEEK_CUR);
 892
 893             av_log(avctx, AV_LOG_DEBUG, "End subband coeffs %i extra %i\n", count, count - expected);
 894 finish:
 895             if (s->subband_num_actual != 255)
 896                 s->codebook = 0;
 897         }
 898     }
 899
 900     s->planes = av_pix_fmt_count_planes(avctx->pix_fmt);
 901     if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16) {
 902         s->progressive = 1;
 903         s->planes = 4;
 904     }
 905
 906     ff_thread_finish_setup(avctx);
 907
 908     if (!s->a_width || !s->a_height || s->a_format == AV_PIX_FMT_NONE ||
 909         s->a_transform_type == INT_MIN ||
 910         s->coded_width || s->coded_height || s->coded_format != AV_PIX_FMT_NONE) {
 911         av_log(avctx, AV_LOG_ERROR, "Invalid dimensions\n");
 912         ret = AVERROR(EINVAL);
 913         goto end;
 914     }
 915
 916     if (!got_buffer) {
 917         av_log(avctx, AV_LOG_ERROR, "No end of header tag found\n");
 918         ret = AVERROR(EINVAL);
 919         goto end;
 920     }
 921
 922     if (s->transform_type == 0 && s->sample_type != 1) {
 923         for (plane = 0; plane < s->planes && !ret; plane++) {
 924             /* level 1 */
 925             int lowpass_height  = s->plane[plane].band[0][0].height;
 926             int output_stride   = s->plane[plane].band[0][0].a_width;
 927             int lowpass_width   = s->plane[plane].band[0][0].width;
 928             int highpass_stride = s->plane[plane].band[0][1].stride;
 929             int act_plane = plane == 1 ? 2 : plane == 2 ? 1 : plane;
 930             ptrdiff_t dst_linesize;
 931             int16_t *low, *high, *output, *dst;
 932
 933             if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16) {
 934                 act_plane = 0;
 935                 dst_linesize = pic->linesize[act_plane];
 936             } else {
 937                 dst_linesize = pic->linesize[act_plane] / 2;
 938             }
 939
 940             if (lowpass_height > s->plane[plane].band[0][0].a_height || lowpass_width > s->plane[plane].band[0][0].a_width ||
 941                 !highpass_stride || s->plane[plane].band[0][1].width > s->plane[plane].band[0][1].a_width ||
 942                 lowpass_width < 3 || lowpass_height < 3) {
 943                 av_log(avctx, AV_LOG_ERROR, "Invalid plane dimensions\n");
 944                 ret = AVERROR(EINVAL);
 945                 goto end;
 946             }
 947
 948             av_log(avctx, AV_LOG_DEBUG, "Decoding level 1 plane %i %i %i %i\n", plane, lowpass_height, lowpass_width, highpass_stride);
 949
 950             low    = s->plane[plane].subband[0];
 951             high   = s->plane[plane].subband[2];
 952             output = s->plane[plane].l_h[0];
 953             dsp->vert_filter(output, output_stride, low, lowpass_width, high, highpass_stride, lowpass_width, lowpass_height);
 954
 955             low    = s->plane[plane].subband[1];
 956             high   = s->plane[plane].subband[3];
 957             output = s->plane[plane].l_h[1];
 958
 959             dsp->vert_filter(output, output_stride, low, highpass_stride, high, highpass_stride, lowpass_width, lowpass_height);
 960
 961             low    = s->plane[plane].l_h[0];
 962             high   = s->plane[plane].l_h[1];
 963             output = s->plane[plane].subband[0];
 964             dsp->horiz_filter(output, output_stride, low, output_stride, high, output_stride, lowpass_width, lowpass_height * 2);
 965             if (s->bpc == 12) {
 966                 output = s->plane[plane].subband[0];
 967                 for (i = 0; i < lowpass_height * 2; i++) {
 968                     for (j = 0; j < lowpass_width * 2; j++)
 969                         output[j] *= 4;
 970
 971                     output += output_stride * 2;
 972                 }
 973             }
 974
 975             /* level 2 */
 976             lowpass_height  = s->plane[plane].band[1][1].height;
 977             output_stride   = s->plane[plane].band[1][1].a_width;
 978             lowpass_width   = s->plane[plane].band[1][1].width;
 979             highpass_stride = s->plane[plane].band[1][1].stride;
 980
 981             if (lowpass_height > s->plane[plane].band[1][1].a_height || lowpass_width > s->plane[plane].band[1][1].a_width ||
 982                 !highpass_stride || s->plane[plane].band[1][1].width > s->plane[plane].band[1][1].a_width ||
 983                 lowpass_width < 3 || lowpass_height < 3) {
 984                 av_log(avctx, AV_LOG_ERROR, "Invalid plane dimensions\n");
 985                 ret = AVERROR(EINVAL);
 986                 goto end;
 987             }
 988
 989             av_log(avctx, AV_LOG_DEBUG, "Level 2 plane %i %i %i %i\n", plane, lowpass_height, lowpass_width, highpass_stride);
 990
 991             low    = s->plane[plane].subband[0];
 992             high   = s->plane[plane].subband[5];
 993             output = s->plane[plane].l_h[3];
 994             dsp->vert_filter(output, output_stride, low, output_stride, high, highpass_stride, lowpass_width, lowpass_height);
 995
 996             low    = s->plane[plane].subband[4];
 997             high   = s->plane[plane].subband[6];
 998             output = s->plane[plane].l_h[4];
 999             dsp->vert_filter(output, output_stride, low, highpass_stride, high, highpass_stride, lowpass_width, lowpass_height);
1000
1001             low    = s->plane[plane].l_h[3];
1002             high   = s->plane[plane].l_h[4];
1003             output = s->plane[plane].subband[0];
1004             dsp->horiz_filter(output, output_stride, low, output_stride, high, output_stride, lowpass_width, lowpass_height * 2);
1005
1006             output = s->plane[plane].subband[0];
1007             for (i = 0; i < lowpass_height * 2; i++) {
1008                 for (j = 0; j < lowpass_width * 2; j++)
1009                     output[j] *= 4;
1010
1011                 output += output_stride * 2;
1012             }
1013
1014             /* level 3 */
1015             lowpass_height  = s->plane[plane].band[2][1].height;
1016             output_stride   = s->plane[plane].band[2][1].a_width;
1017             lowpass_width   = s->plane[plane].band[2][1].width;
1018             highpass_stride = s->plane[plane].band[2][1].stride;
1019
1020             if (lowpass_height > s->plane[plane].band[2][1].a_height || lowpass_width > s->plane[plane].band[2][1].a_width ||
1021                 !highpass_stride || s->plane[plane].band[2][1].width > s->plane[plane].band[2][1].a_width ||
1022                 lowpass_height < 3 || lowpass_width < 3 || lowpass_width * 2 > s->plane[plane].width) {
1023                 av_log(avctx, AV_LOG_ERROR, "Invalid plane dimensions\n");
1024                 ret = AVERROR(EINVAL);
1025                 goto end;
1026             }
1027
1028             av_log(avctx, AV_LOG_DEBUG, "Level 3 plane %i %i %i %i\n", plane, lowpass_height, lowpass_width, highpass_stride);
1029             if (s->progressive) {
1030                 low    = s->plane[plane].subband[0];
1031                 high   = s->plane[plane].subband[8];
1032                 output = s->plane[plane].l_h[6];
1033                 dsp->vert_filter(output, output_stride, low, output_stride, high, highpass_stride, lowpass_width, lowpass_height);
1034
1035                 low    = s->plane[plane].subband[7];
1036                 high   = s->plane[plane].subband[9];
1037                 output = s->plane[plane].l_h[7];
1038                 dsp->vert_filter(output, output_stride, low, highpass_stride, high, highpass_stride, lowpass_width, lowpass_height);
1039
1040                 dst = (int16_t *)pic->data[act_plane];
1041                 if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16) {
1042                     if (plane & 1)
1043                         dst++;
1044                     if (plane > 1)
1045                         dst += pic->linesize[act_plane] >> 1;
1046                 }
1047                 low  = s->plane[plane].l_h[6];
1048                 high = s->plane[plane].l_h[7];
1049
1050                 if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16 &&
1051                     (lowpass_height * 2 > avctx->coded_height / 2 ||
1052                      lowpass_width  * 2 > avctx->coded_width  / 2    )
1053                     ) {
1054                     ret = AVERROR_INVALIDDATA;
1055                     goto end;
1056                 }
1057
1058                 for (i = 0; i < s->plane[act_plane].height; i++) {
1059                     dsp->horiz_filter_clip(dst, low, high, lowpass_width, s->bpc);
1060                     if (avctx->pix_fmt == AV_PIX_FMT_GBRAP12 && act_plane == 3)
1061                         process_alpha(dst, lowpass_width * 2);
1062                     low  += output_stride;
1063                     high += output_stride;
1064                     dst  += dst_linesize;
1065                 }
1066             } else {
1067                 av_log(avctx, AV_LOG_DEBUG, "interlaced frame ? %d", pic->interlaced_frame);
1068                 pic->interlaced_frame = 1;
1069                 low    = s->plane[plane].subband[0];
1070                 high   = s->plane[plane].subband[7];
1071                 output = s->plane[plane].l_h[6];
1072                 dsp->horiz_filter(output, output_stride, low, output_stride, high, highpass_stride, lowpass_width, lowpass_height);
1073
1074                 low    = s->plane[plane].subband[8];
1075                 high   = s->plane[plane].subband[9];
1076                 output = s->plane[plane].l_h[7];
1077                 dsp->horiz_filter(output, output_stride, low, highpass_stride, high, highpass_stride, lowpass_width, lowpass_height);
1078
1079                 dst  = (int16_t *)pic->data[act_plane];
1080                 low  = s->plane[plane].l_h[6];
1081                 high = s->plane[plane].l_h[7];
1082                 for (i = 0; i < s->plane[act_plane].height / 2; i++) {
1083                     interlaced_vertical_filter(dst, low, high, lowpass_width * 2,  pic->linesize[act_plane]/2, act_plane);
1084                     low  += output_stride * 2;
1085                     high += output_stride * 2;
1086                     dst  += pic->linesize[act_plane];
1087                 }
1088             }
1089         }
1090     } else if (s->transform_type == 2 && (avctx->internal->is_copy || s->frame_index == 1 || s->sample_type != 1)) {
1091         for (plane = 0; plane < s->planes && !ret; plane++) {
1092             int lowpass_height  = s->plane[plane].band[0][0].height;
1093             int output_stride   = s->plane[plane].band[0][0].a_width;
1094             int lowpass_width   = s->plane[plane].band[0][0].width;
1095             int highpass_stride = s->plane[plane].band[0][1].stride;
1096             int act_plane = plane == 1 ? 2 : plane == 2 ? 1 : plane;
1097             int16_t *low, *high, *output, *dst;
1098             ptrdiff_t dst_linesize;
1099
1100             if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16) {
1101                 act_plane = 0;
1102                 dst_linesize = pic->linesize[act_plane];
1103             } else {
1104                 dst_linesize = pic->linesize[act_plane] / 2;
1105             }
1106
1107             if (lowpass_height > s->plane[plane].band[0][0].a_height || lowpass_width > s->plane[plane].band[0][0].a_width ||
1108                 !highpass_stride || s->plane[plane].band[0][1].width > s->plane[plane].band[0][1].a_width ||
1109                 lowpass_width < 3 || lowpass_height < 3) {
1110                 av_log(avctx, AV_LOG_ERROR, "Invalid plane dimensions\n");
1111                 ret = AVERROR(EINVAL);
1112                 goto end;
1113             }
1114
1115             av_log(avctx, AV_LOG_DEBUG, "Decoding level 1 plane %i %i %i %i\n", plane, lowpass_height, lowpass_width, highpass_stride);
1116
1117             low    = s->plane[plane].subband[0];
1118             high   = s->plane[plane].subband[2];
1119             output = s->plane[plane].l_h[0];
1120             dsp->vert_filter(output, output_stride, low, lowpass_width, high, highpass_stride, lowpass_width, lowpass_height);
1121
1122             low    = s->plane[plane].subband[1];
1123             high   = s->plane[plane].subband[3];
1124             output = s->plane[plane].l_h[1];
1125             dsp->vert_filter(output, output_stride, low, highpass_stride, high, highpass_stride, lowpass_width, lowpass_height);
1126
1127             low    = s->plane[plane].l_h[0];
1128             high   = s->plane[plane].l_h[1];
1129             output = s->plane[plane].l_h[7];
1130             dsp->horiz_filter(output, output_stride, low, output_stride, high, output_stride, lowpass_width, lowpass_height * 2);
1131             if (s->bpc == 12) {
1132                 output = s->plane[plane].l_h[7];
1133                 for (i = 0; i < lowpass_height * 2; i++) {
1134                     for (j = 0; j < lowpass_width * 2; j++)
1135                         output[j] *= 4;
1136
1137                     output += output_stride * 2;
1138                 }
1139             }
1140
1141             lowpass_height  = s->plane[plane].band[1][1].height;
1142             output_stride   = s->plane[plane].band[1][1].a_width;
1143             lowpass_width   = s->plane[plane].band[1][1].width;
1144             highpass_stride = s->plane[plane].band[1][1].stride;
1145
1146             if (lowpass_height > s->plane[plane].band[1][1].a_height || lowpass_width > s->plane[plane].band[1][1].a_width ||
1147                 !highpass_stride || s->plane[plane].band[1][1].width > s->plane[plane].band[1][1].a_width ||
1148                 lowpass_width < 3 || lowpass_height < 3) {
1149                 av_log(avctx, AV_LOG_ERROR, "Invalid plane dimensions\n");
1150                 ret = AVERROR(EINVAL);
1151                 goto end;
1152             }
1153
1154             av_log(avctx, AV_LOG_DEBUG, "Level 2 lowpass plane %i %i %i %i\n", plane, lowpass_height, lowpass_width, highpass_stride);
1155
1156             low    = s->plane[plane].l_h[7];
1157             high   = s->plane[plane].subband[5];
1158             output = s->plane[plane].l_h[3];
1159             dsp->vert_filter(output, output_stride, low, output_stride, high, highpass_stride, lowpass_width, lowpass_height);
1160
1161             low    = s->plane[plane].subband[4];
1162             high   = s->plane[plane].subband[6];
1163             output = s->plane[plane].l_h[4];
1164             dsp->vert_filter(output, output_stride, low, highpass_stride, high, highpass_stride, lowpass_width, lowpass_height);
1165
1166             low    = s->plane[plane].l_h[3];
1167             high   = s->plane[plane].l_h[4];
1168             output = s->plane[plane].l_h[7];
1169             dsp->horiz_filter(output, output_stride, low, output_stride, high, output_stride, lowpass_width, lowpass_height * 2);
1170
1171             output = s->plane[plane].l_h[7];
1172             for (i = 0; i < lowpass_height * 2; i++) {
1173                 for (j = 0; j < lowpass_width * 2; j++)
1174                     output[j] *= 4;
1175                 output += output_stride * 2;
1176             }
1177
1178             low    = s->plane[plane].subband[7];
1179             high   = s->plane[plane].subband[9];
1180             output = s->plane[plane].l_h[3];
1181             dsp->vert_filter(output, output_stride, low, highpass_stride, high, highpass_stride, lowpass_width, lowpass_height);
1182
1183             low    = s->plane[plane].subband[8];
1184             high   = s->plane[plane].subband[10];
1185             output = s->plane[plane].l_h[4];
1186             dsp->vert_filter(output, output_stride, low, highpass_stride, high, highpass_stride, lowpass_width, lowpass_height);
1187
1188             low    = s->plane[plane].l_h[3];
1189             high   = s->plane[plane].l_h[4];
1190             output = s->plane[plane].l_h[9];
1191             dsp->horiz_filter(output, output_stride, low, output_stride, high, output_stride, lowpass_width, lowpass_height * 2);
1192
1193             lowpass_height  = s->plane[plane].band[4][1].height;
1194             output_stride   = s->plane[plane].band[4][1].a_width;
1195             lowpass_width   = s->plane[plane].band[4][1].width;
1196             highpass_stride = s->plane[plane].band[4][1].stride;
1197             av_log(avctx, AV_LOG_DEBUG, "temporal level %i %i %i %i\n", plane, lowpass_height, lowpass_width, highpass_stride);
1198
1199             if (lowpass_height > s->plane[plane].band[4][1].a_height || lowpass_width > s->plane[plane].band[4][1].a_width ||
1200                 !highpass_stride || s->plane[plane].band[4][1].width > s->plane[plane].band[4][1].a_width ||
1201                 lowpass_width < 3 || lowpass_height < 3) {
1202                 av_log(avctx, AV_LOG_ERROR, "Invalid plane dimensions\n");
1203                 ret = AVERROR(EINVAL);
1204                 goto end;
1205             }
1206
1207             low    = s->plane[plane].l_h[7];
1208             high   = s->plane[plane].l_h[9];
1209             output = s->plane[plane].l_h[7];
1210             for (i = 0; i < lowpass_height; i++) {
1211                 inverse_temporal_filter(low, high, lowpass_width);
1212                 low    += output_stride;
1213                 high   += output_stride;
1214             }
1215             if (s->progressive) {
1216                 low    = s->plane[plane].l_h[7];
1217                 high   = s->plane[plane].subband[15];
1218                 output = s->plane[plane].l_h[6];
1219                 dsp->vert_filter(output, output_stride, low, output_stride, high, highpass_stride, lowpass_width, lowpass_height);
1220
1221                 low    = s->plane[plane].subband[14];
1222                 high   = s->plane[plane].subband[16];
1223                 output = s->plane[plane].l_h[7];
1224                 dsp->vert_filter(output, output_stride, low, highpass_stride, high, highpass_stride, lowpass_width, lowpass_height);
1225
1226                 low    = s->plane[plane].l_h[9];
1227                 high   = s->plane[plane].subband[12];
1228                 output = s->plane[plane].l_h[8];
1229                 dsp->vert_filter(output, output_stride, low, output_stride, high, highpass_stride, lowpass_width, lowpass_height);
1230
1231                 low    = s->plane[plane].subband[11];
1232                 high   = s->plane[plane].subband[13];
1233                 output = s->plane[plane].l_h[9];
1234                 dsp->vert_filter(output, output_stride, low, highpass_stride, high, highpass_stride, lowpass_width, lowpass_height);
1235
1236                 if (s->sample_type == 1)
1237                     continue;
1238
1239                 dst = (int16_t *)pic->data[act_plane];
1240                 if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16) {
1241                     if (plane & 1)
1242                         dst++;
1243                     if (plane > 1)
1244                         dst += pic->linesize[act_plane] >> 1;
1245                 }
1246
1247                 if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16 &&
1248                     (lowpass_height * 2 > avctx->coded_height / 2 ||
1249                      lowpass_width  * 2 > avctx->coded_width  / 2    )
1250                     ) {
1251                     ret = AVERROR_INVALIDDATA;
1252                     goto end;
1253                 }
1254
1255                 low  = s->plane[plane].l_h[6];
1256                 high = s->plane[plane].l_h[7];
1257                 for (i = 0; i < s->plane[act_plane].height; i++) {
1258                     dsp->horiz_filter_clip(dst, low, high, lowpass_width, s->bpc);
1259                     low  += output_stride;
1260                     high += output_stride;
1261                     dst  += dst_linesize;
1262                 }
1263             } else {
1264                 pic->interlaced_frame = 1;
1265                 low    = s->plane[plane].l_h[7];
1266                 high   = s->plane[plane].subband[14];
1267                 output = s->plane[plane].l_h[6];
1268                 dsp->horiz_filter(output, output_stride, low, output_stride, high, highpass_stride, lowpass_width, lowpass_height);
1269
1270                 low    = s->plane[plane].subband[15];
1271                 high   = s->plane[plane].subband[16];
1272                 output = s->plane[plane].l_h[7];
1273                 dsp->horiz_filter(output, output_stride, low, highpass_stride, high, highpass_stride, lowpass_width, lowpass_height);
1274
1275                 low    = s->plane[plane].l_h[9];
1276                 high   = s->plane[plane].subband[11];
1277                 output = s->plane[plane].l_h[8];
1278                 dsp->horiz_filter(output, output_stride, low, output_stride, high, highpass_stride, lowpass_width, lowpass_height);
1279
1280                 low    = s->plane[plane].subband[12];
1281                 high   = s->plane[plane].subband[13];
1282                 output = s->plane[plane].l_h[9];
1283                 dsp->horiz_filter(output, output_stride, low, highpass_stride, high, highpass_stride, lowpass_width, lowpass_height);
1284
1285                 if (s->sample_type == 1)
1286                     continue;
1287
1288                 dst  = (int16_t *)pic->data[act_plane];
1289                 low  = s->plane[plane].l_h[6];
1290                 high = s->plane[plane].l_h[7];
1291                 for (i = 0; i < s->plane[act_plane].height / 2; i++) {
1292                     interlaced_vertical_filter(dst, low, high, lowpass_width * 2,  pic->linesize[act_plane]/2, act_plane);
1293                     low  += output_stride * 2;
1294                     high += output_stride * 2;
1295                     dst  += pic->linesize[act_plane];
1296                 }
1297             }
1298         }
1299     }
1300
1301     if (s->transform_type == 2 && s->sample_type == 1) {
1302         int16_t *low, *high, *dst;
1303         int output_stride, lowpass_height, lowpass_width;
1304         ptrdiff_t dst_linesize;
1305
1306         for (plane = 0; plane < s->planes; plane++) {
1307             int act_plane = plane == 1 ? 2 : plane == 2 ? 1 : plane;
1308
1309             if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16) {
1310                 act_plane = 0;
1311                 dst_linesize = pic->linesize[act_plane];
1312             } else {
1313                 dst_linesize = pic->linesize[act_plane] / 2;
1314             }
1315
1316             lowpass_height  = s->plane[plane].band[4][1].height;
1317             output_stride   = s->plane[plane].band[4][1].a_width;
1318             lowpass_width   = s->plane[plane].band[4][1].width;
1319
1320             if (lowpass_height > s->plane[plane].band[4][1].a_height || lowpass_width > s->plane[plane].band[4][1].a_width ||
1321                 s->plane[plane].band[4][1].width > s->plane[plane].band[4][1].a_width ||
1322                 lowpass_width < 3 || lowpass_height < 3) {
1323                 av_log(avctx, AV_LOG_ERROR, "Invalid plane dimensions\n");
1324                 ret = AVERROR(EINVAL);
1325                 goto end;
1326             }
1327
1328             if (s->progressive) {
1329                 dst = (int16_t *)pic->data[act_plane];
1330                 low  = s->plane[plane].l_h[8];
1331                 high = s->plane[plane].l_h[9];
1332
1333                 if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16) {
1334                     if (plane & 1)
1335                         dst++;
1336                     if (plane > 1)
1337                         dst += pic->linesize[act_plane] >> 1;
1338                 }
1339
1340                 if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16 &&
1341                     (lowpass_height * 2 > avctx->coded_height / 2 ||
1342                      lowpass_width  * 2 > avctx->coded_width  / 2    )
1343                     ) {
1344                     ret = AVERROR_INVALIDDATA;
1345                     goto end;
1346                 }
1347
1348                 for (i = 0; i < s->plane[act_plane].height; i++) {
1349                     dsp->horiz_filter_clip(dst, low, high, lowpass_width, s->bpc);
1350                     low  += output_stride;
1351                     high += output_stride;
1352                     dst  += dst_linesize;
1353                 }
1354             } else {
1355                 dst  = (int16_t *)pic->data[act_plane];
1356                 low  = s->plane[plane].l_h[8];
1357                 high = s->plane[plane].l_h[9];
1358                 for (i = 0; i < s->plane[act_plane].height / 2; i++) {
1359                     interlaced_vertical_filter(dst, low, high, lowpass_width * 2,  pic->linesize[act_plane]/2, act_plane);
1360                     low  += output_stride * 2;
1361                     high += output_stride * 2;
1362                     dst  += pic->linesize[act_plane];
1363                 }
1364             }
1365         }
1366     }
1367
1368     if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16)
1369         process_bayer(pic, s->bpc);
1370 end:
1371     if (ret < 0)
1372         return ret;
1373
1374     *got_frame = 1;
1375     return avpkt->size;
1376 }
1377
1378 static av_cold int cfhd_close(AVCodecContext *avctx)
1379 {
1380     CFHDContext *s = avctx->priv_data;
1381
1382     free_buffers(s);
1383
1384     ff_free_vlc(&s->vlc_9);
1385     ff_free_vlc(&s->vlc_18);
1386
1387     return 0;
1388 }
1389
1390 #if HAVE_THREADS
1391 static int update_thread_context(AVCodecContext *dst, const AVCodecContext *src)
1392 {
1393     CFHDContext *psrc = src->priv_data;
1394     CFHDContext *pdst = dst->priv_data;
1395     int ret;
1396
1397     if (dst == src || psrc->transform_type == 0)
1398         return 0;
1399
1400     if (pdst->plane[0].idwt_size != psrc->plane[0].idwt_size ||
1401         pdst->a_format != psrc->a_format ||
1402         pdst->a_width != psrc->a_width ||
1403         pdst->a_height != psrc->a_height ||
1404         pdst->a_transform_type != psrc->a_transform_type)
1405         free_buffers(pdst);
1406
1407     pdst->a_format = psrc->a_format;
1408     pdst->a_width  = psrc->a_width;
1409     pdst->a_height = psrc->a_height;
1410     pdst->a_transform_type = psrc->a_transform_type;
1411     pdst->transform_type = psrc->transform_type;
1412     pdst->progressive = psrc->progressive;
1413     pdst->planes = psrc->planes;
1414
1415     if (!pdst->plane[0].idwt_buf) {
1416         pdst->coded_width  = pdst->a_width;
1417         pdst->coded_height = pdst->a_height;
1418         pdst->coded_format = pdst->a_format;
1419         pdst->transform_type = pdst->a_transform_type;
1420         ret = alloc_buffers(dst);
1421         if (ret < 0)
1422             return ret;
1423     }
1424
1425     for (int plane = 0; plane < pdst->planes; plane++) {
1426         memcpy(pdst->plane[plane].band, psrc->plane[plane].band, sizeof(pdst->plane[plane].band));
1427         memcpy(pdst->plane[plane].idwt_buf, psrc->plane[plane].idwt_buf,
1428                pdst->plane[plane].idwt_size * sizeof(int16_t));
1429     }
1430
1431     return 0;
1432 }
1433 #endif
1434
1435 AVCodec ff_cfhd_decoder = {
1436     .name             = "cfhd",
1437     .long_name        = NULL_IF_CONFIG_SMALL("GoPro CineForm HD"),
1438     .type             = AVMEDIA_TYPE_VIDEO,
1439     .id               = AV_CODEC_ID_CFHD,
1440     .priv_data_size   = sizeof(CFHDContext),
1441     .init             = cfhd_init,
1442     .close            = cfhd_close,
1443     .decode           = cfhd_decode,
1444     .update_thread_context = ONLY_IF_THREADS_ENABLED(update_thread_context),
1445     .capabilities     = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS,
1446     .caps_internal    = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,
1447 };