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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     init_plane_defaults(s);
 104     init_peak_table_defaults(s);
 105 }
 106
 107 static inline int dequant_and_decompand(CFHDContext *s, int level, int quantisation, int codebook)
 108 {
 109     if (codebook == 0 || codebook == 1) {
 110         return s->lut[codebook][abs(level)] * FFSIGN(level) * quantisation;
 111     } else
 112         return level * quantisation;
 113 }
 114
 115 static inline void difference_coding(int16_t *band, int width, int height)
 116 {
 117
 118     int i,j;
 119     for (i = 0; i < height; i++) {
 120         for (j = 1; j < width; j++) {
 121           band[j] += band[j-1];
 122         }
 123         band += width;
 124     }
 125 }
 126
 127 static inline void peak_table(int16_t *band, Peak *peak, int length)
 128 {
 129     int i;
 130     for (i = 0; i < length; i++)
 131         if (abs(band[i]) > peak->level)
 132             band[i] = bytestream2_get_le16(&peak->base);
 133 }
 134
 135 static inline void process_alpha(int16_t *alpha, int width)
 136 {
 137     int i, channel;
 138     for (i = 0; i < width; i++) {
 139         channel   = alpha[i];
 140         channel  -= ALPHA_COMPAND_DC_OFFSET;
 141         channel <<= 3;
 142         channel  *= ALPHA_COMPAND_GAIN;
 143         channel >>= 16;
 144         channel   = av_clip_uintp2(channel, 12);
 145         alpha[i]  = channel;
 146     }
 147 }
 148
 149 static inline void process_bayer(AVFrame *frame, int bpc)
 150 {
 151     const int linesize = frame->linesize[0];
 152     uint16_t *r = (uint16_t *)frame->data[0];
 153     uint16_t *g1 = (uint16_t *)(frame->data[0] + 2);
 154     uint16_t *g2 = (uint16_t *)(frame->data[0] + frame->linesize[0]);
 155     uint16_t *b = (uint16_t *)(frame->data[0] + frame->linesize[0] + 2);
 156     const int mid = 1 << (bpc - 1);
 157     const int factor = 1 << (16 - bpc);
 158
 159     for (int y = 0; y < frame->height >> 1; y++) {
 160         for (int x = 0; x < frame->width; x += 2) {
 161             int R, G1, G2, B;
 162             int g, rg, bg, gd;
 163
 164             g  = r[x];
 165             rg = g1[x];
 166             bg = g2[x];
 167             gd = b[x];
 168             gd -= mid;
 169
 170             R  = (rg - mid) * 2 + g;
 171             G1 = g + gd;
 172             G2 = g - gd;
 173             B  = (bg - mid) * 2 + g;
 174
 175             R  = av_clip_uintp2(R  * factor, 16);
 176             G1 = av_clip_uintp2(G1 * factor, 16);
 177             G2 = av_clip_uintp2(G2 * factor, 16);
 178             B  = av_clip_uintp2(B  * factor, 16);
 179
 180             r[x]  = R;
 181             g1[x] = G1;
 182             g2[x] = G2;
 183             b[x]  = B;
 184         }
 185
 186         r  += linesize;
 187         g1 += linesize;
 188         g2 += linesize;
 189         b  += linesize;
 190     }
 191 }
 192
 193 static inline void filter(int16_t *output, ptrdiff_t out_stride,
 194                           int16_t *low, ptrdiff_t low_stride,
 195                           int16_t *high, ptrdiff_t high_stride,
 196                           int len, int clip)
 197 {
 198     int16_t tmp;
 199     int i;
 200
 201     tmp = (11*low[0*low_stride] - 4*low[1*low_stride] + low[2*low_stride] + 4) >> 3;
 202     output[(2*0+0)*out_stride] = (tmp + high[0*high_stride]) >> 1;
 203     if (clip)
 204         output[(2*0+0)*out_stride] = av_clip_uintp2_c(output[(2*0+0)*out_stride], clip);
 205
 206     tmp = ( 5*low[0*low_stride] + 4*low[1*low_stride] - low[2*low_stride] + 4) >> 3;
 207     output[(2*0+1)*out_stride] = (tmp - high[0*high_stride]) >> 1;
 208     if (clip)
 209         output[(2*0+1)*out_stride] = av_clip_uintp2_c(output[(2*0+1)*out_stride], clip);
 210
 211     for (i = 1; i < len - 1; i++) {
 212         tmp = (low[(i-1)*low_stride] - low[(i+1)*low_stride] + 4) >> 3;
 213         output[(2*i+0)*out_stride] = (tmp + low[i*low_stride] + high[i*high_stride]) >> 1;
 214         if (clip)
 215             output[(2*i+0)*out_stride] = av_clip_uintp2_c(output[(2*i+0)*out_stride], clip);
 216
 217         tmp = (low[(i+1)*low_stride] - low[(i-1)*low_stride] + 4) >> 3;
 218         output[(2*i+1)*out_stride] = (tmp + low[i*low_stride] - high[i*high_stride]) >> 1;
 219         if (clip)
 220             output[(2*i+1)*out_stride] = av_clip_uintp2_c(output[(2*i+1)*out_stride], clip);
 221     }
 222
 223     tmp = ( 5*low[i*low_stride] + 4*low[(i-1)*low_stride] - low[(i-2)*low_stride] + 4) >> 3;
 224     output[(2*i+0)*out_stride] = (tmp + high[i*high_stride]) >> 1;
 225     if (clip)
 226         output[(2*i+0)*out_stride] = av_clip_uintp2_c(output[(2*i+0)*out_stride], clip);
 227
 228     tmp = (11*low[i*low_stride] - 4*low[(i-1)*low_stride] + low[(i-2)*low_stride] + 4) >> 3;
 229     output[(2*i+1)*out_stride] = (tmp - high[i*high_stride]) >> 1;
 230     if (clip)
 231         output[(2*i+1)*out_stride] = av_clip_uintp2_c(output[(2*i+1)*out_stride], clip);
 232 }
 233
 234 static inline void interlaced_vertical_filter(int16_t *output, int16_t *low, int16_t *high,
 235                          int width, int linesize, int plane)
 236 {
 237     int i;
 238     int16_t even, odd;
 239     for (i = 0; i < width; i++) {
 240         even = (low[i] - high[i])/2;
 241         odd  = (low[i] + high[i])/2;
 242         output[i]            = av_clip_uintp2(even, 10);
 243         output[i + linesize] = av_clip_uintp2(odd, 10);
 244     }
 245 }
 246
 247 static inline void inverse_temporal_filter(int16_t *output, int16_t *low, int16_t *high,
 248                                            int width)
 249 {
 250     for (int i = 0; i < width; i++) {
 251         int even = (low[i] - high[i]) / 2;
 252         int odd  = (low[i] + high[i]) / 2;
 253
 254         low[i]  = even;
 255         high[i] = odd;
 256     }
 257 }
 258
 259 static void horiz_filter(int16_t *output, int16_t *low, int16_t *high,
 260                          int width)
 261 {
 262     filter(output, 1, low, 1, high, 1, width, 0);
 263 }
 264
 265 static void horiz_filter_clip(int16_t *output, int16_t *low, int16_t *high,
 266                               int width, int clip)
 267 {
 268     filter(output, 1, low, 1, high, 1, width, clip);
 269 }
 270
 271 static void horiz_filter_clip_bayer(int16_t *output, int16_t *low, int16_t *high,
 272                                     int width, int clip)
 273 {
 274     filter(output, 2, low, 1, high, 1, width, clip);
 275 }
 276
 277 static void vert_filter(int16_t *output, ptrdiff_t out_stride,
 278                         int16_t *low, ptrdiff_t low_stride,
 279                         int16_t *high, ptrdiff_t high_stride, int len)
 280 {
 281     filter(output, out_stride, low, low_stride, high, high_stride, len, 0);
 282 }
 283
 284 static void free_buffers(CFHDContext *s)
 285 {
 286     int i, j;
 287
 288     for (i = 0; i < FF_ARRAY_ELEMS(s->plane); i++) {
 289         av_freep(&s->plane[i].idwt_buf);
 290         av_freep(&s->plane[i].idwt_tmp);
 291         s->plane[i].idwt_size = 0;
 292
 293         for (j = 0; j < SUBBAND_COUNT_3D; j++)
 294             s->plane[i].subband[j] = NULL;
 295
 296         for (j = 0; j < 10; j++)
 297             s->plane[i].l_h[j] = NULL;
 298     }
 299     s->a_height = 0;
 300     s->a_width  = 0;
 301 }
 302
 303 static int alloc_buffers(AVCodecContext *avctx)
 304 {
 305     CFHDContext *s = avctx->priv_data;
 306     int i, j, ret, planes, bayer = 0;
 307     int chroma_x_shift, chroma_y_shift;
 308     unsigned k;
 309
 310     if ((ret = ff_set_dimensions(avctx, s->coded_width, s->coded_height)) < 0)
 311         return ret;
 312     avctx->pix_fmt = s->coded_format;
 313
 314     if ((ret = av_pix_fmt_get_chroma_sub_sample(s->coded_format,
 315                                                 &chroma_x_shift,
 316                                                 &chroma_y_shift)) < 0)
 317         return ret;
 318     planes = av_pix_fmt_count_planes(s->coded_format);
 319     if (s->coded_format == AV_PIX_FMT_BAYER_RGGB16) {
 320         planes = 4;
 321         chroma_x_shift = 1;
 322         chroma_y_shift = 1;
 323         bayer = 1;
 324     }
 325
 326     for (i = 0; i < planes; i++) {
 327         int w8, h8, w4, h4, w2, h2;
 328         int width  = (i || bayer) ? s->coded_width  >> chroma_x_shift : s->coded_width;
 329         int height = (i || bayer) ? s->coded_height >> chroma_y_shift : s->coded_height;
 330         ptrdiff_t stride = FFALIGN(width  / 8, 8) * 8;
 331
 332         if (chroma_y_shift && !bayer)
 333             height = FFALIGN(height / 8, 2) * 8;
 334         s->plane[i].width  = width;
 335         s->plane[i].height = height;
 336         s->plane[i].stride = stride;
 337
 338         w8 = FFALIGN(s->plane[i].width  / 8, 8);
 339         h8 = FFALIGN(height, 8) / 8;
 340         w4 = w8 * 2;
 341         h4 = h8 * 2;
 342         w2 = w4 * 2;
 343         h2 = h4 * 2;
 344
 345         if (s->transform_type == 0) {
 346             s->plane[i].idwt_size = FFALIGN(height, 8) * stride;
 347             s->plane[i].idwt_buf =
 348                 av_mallocz_array(s->plane[i].idwt_size, sizeof(*s->plane[i].idwt_buf));
 349             s->plane[i].idwt_tmp =
 350                 av_malloc_array(s->plane[i].idwt_size, sizeof(*s->plane[i].idwt_tmp));
 351         } else {
 352             s->plane[i].idwt_size = FFALIGN(height, 8) * stride * 2;
 353             s->plane[i].idwt_buf =
 354                 av_mallocz_array(s->plane[i].idwt_size, sizeof(*s->plane[i].idwt_buf));
 355             s->plane[i].idwt_tmp =
 356                 av_malloc_array(s->plane[i].idwt_size, sizeof(*s->plane[i].idwt_tmp));
 357         }
 358
 359         if (!s->plane[i].idwt_buf || !s->plane[i].idwt_tmp)
 360             return AVERROR(ENOMEM);
 361
 362         s->plane[i].subband[0] = s->plane[i].idwt_buf;
 363         s->plane[i].subband[1] = s->plane[i].idwt_buf + 2 * w8 * h8;
 364         s->plane[i].subband[2] = s->plane[i].idwt_buf + 1 * w8 * h8;
 365         s->plane[i].subband[3] = s->plane[i].idwt_buf + 3 * w8 * h8;
 366         s->plane[i].subband[4] = s->plane[i].idwt_buf + 2 * w4 * h4;
 367         s->plane[i].subband[5] = s->plane[i].idwt_buf + 1 * w4 * h4;
 368         s->plane[i].subband[6] = s->plane[i].idwt_buf + 3 * w4 * h4;
 369         if (s->transform_type == 0) {
 370             s->plane[i].subband[7] = s->plane[i].idwt_buf + 2 * w2 * h2;
 371             s->plane[i].subband[8] = s->plane[i].idwt_buf + 1 * w2 * h2;
 372             s->plane[i].subband[9] = s->plane[i].idwt_buf + 3 * w2 * h2;
 373         } else {
 374             int16_t *frame2 =
 375             s->plane[i].subband[7]  = s->plane[i].idwt_buf + 4 * w2 * h2;
 376             s->plane[i].subband[8]  = frame2 + 2 * w4 * h4;
 377             s->plane[i].subband[9]  = frame2 + 1 * w4 * h4;
 378             s->plane[i].subband[10] = frame2 + 3 * w4 * h4;
 379             s->plane[i].subband[11] = frame2 + 2 * w2 * h2;
 380             s->plane[i].subband[12] = frame2 + 1 * w2 * h2;
 381             s->plane[i].subband[13] = frame2 + 3 * w2 * h2;
 382             s->plane[i].subband[14] = s->plane[i].idwt_buf + 2 * w2 * h2;
 383             s->plane[i].subband[15] = s->plane[i].idwt_buf + 1 * w2 * h2;
 384             s->plane[i].subband[16] = s->plane[i].idwt_buf + 3 * w2 * h2;
 385         }
 386
 387         if (s->transform_type == 0) {
 388             for (j = 0; j < DWT_LEVELS; j++) {
 389                 for (k = 0; k < FF_ARRAY_ELEMS(s->plane[i].band[j]); k++) {
 390                     s->plane[i].band[j][k].a_width  = w8 << j;
 391                     s->plane[i].band[j][k].a_height = h8 << j;
 392                 }
 393             }
 394         } else {
 395             for (j = 0; j < DWT_LEVELS_3D; j++) {
 396                 int t = j < 1 ? 0 : (j < 3 ? 1 : 2);
 397
 398                 for (k = 0; k < FF_ARRAY_ELEMS(s->plane[i].band[j]); k++) {
 399                     s->plane[i].band[j][k].a_width  = w8 << t;
 400                     s->plane[i].band[j][k].a_height = h8 << t;
 401                 }
 402             }
 403         }
 404
 405         /* ll2 and ll1 commented out because they are done in-place */
 406         s->plane[i].l_h[0] = s->plane[i].idwt_tmp;
 407         s->plane[i].l_h[1] = s->plane[i].idwt_tmp + 2 * w8 * h8;
 408         // s->plane[i].l_h[2] = ll2;
 409         s->plane[i].l_h[3] = s->plane[i].idwt_tmp;
 410         s->plane[i].l_h[4] = s->plane[i].idwt_tmp + 2 * w4 * h4;
 411         // s->plane[i].l_h[5] = ll1;
 412         s->plane[i].l_h[6] = s->plane[i].idwt_tmp;
 413         s->plane[i].l_h[7] = s->plane[i].idwt_tmp + 2 * w2 * h2;
 414         if (s->transform_type != 0) {
 415             int16_t *frame2 = s->plane[i].idwt_tmp + 4 * w2 * h2;
 416
 417             s->plane[i].l_h[8] = frame2;
 418             s->plane[i].l_h[9] = frame2 + 2 * w2 * h2;
 419         }
 420     }
 421
 422     s->a_height = s->coded_height;
 423     s->a_width  = s->coded_width;
 424     s->a_format = s->coded_format;
 425
 426     return 0;
 427 }
 428
 429 static int cfhd_decode(AVCodecContext *avctx, void *data, int *got_frame,
 430                        AVPacket *avpkt)
 431 {
 432     CFHDContext *s = avctx->priv_data;
 433     GetByteContext gb;
 434     ThreadFrame frame = { .f = data };
 435     AVFrame *pic = data;
 436     int ret = 0, i, j, plane, got_buffer = 0;
 437     int16_t *coeff_data;
 438
 439     init_frame_defaults(s);
 440     s->planes = av_pix_fmt_count_planes(s->coded_format);
 441
 442     bytestream2_init(&gb, avpkt->data, avpkt->size);
 443
 444     while (bytestream2_get_bytes_left(&gb) >= 4) {
 445         /* Bit weird but implement the tag parsing as the spec says */
 446         uint16_t tagu   = bytestream2_get_be16(&gb);
 447         int16_t tag     = (int16_t)tagu;
 448         int8_t tag8     = (int8_t)(tagu >> 8);
 449         uint16_t abstag = abs(tag);
 450         int8_t abs_tag8 = abs(tag8);
 451         uint16_t data   = bytestream2_get_be16(&gb);
 452         if (abs_tag8 >= 0x60 && abs_tag8 <= 0x6f) {
 453             av_log(avctx, AV_LOG_DEBUG, "large len %x\n", ((tagu & 0xff) << 16) | data);
 454         } else if (tag == SampleFlags) {
 455             av_log(avctx, AV_LOG_DEBUG, "Progressive? %"PRIu16"\n", data);
 456             s->progressive = data & 0x0001;
 457         } else if (tag == FrameType) {
 458             s->frame_type = data;
 459             av_log(avctx, AV_LOG_DEBUG, "Frame type %"PRIu16"\n", data);
 460         } else if (tag == ImageWidth) {
 461             av_log(avctx, AV_LOG_DEBUG, "Width %"PRIu16"\n", data);
 462             s->coded_width = data;
 463         } else if (tag == ImageHeight) {
 464             av_log(avctx, AV_LOG_DEBUG, "Height %"PRIu16"\n", data);
 465             s->coded_height = data;
 466         } else if (tag == ChannelCount) {
 467             av_log(avctx, AV_LOG_DEBUG, "Channel Count: %"PRIu16"\n", data);
 468             s->channel_cnt = data;
 469             if (data > 4) {
 470                 av_log(avctx, AV_LOG_ERROR, "Channel Count of %"PRIu16" is unsupported\n", data);
 471                 ret = AVERROR_PATCHWELCOME;
 472                 break;
 473             }
 474         } else if (tag == SubbandCount) {
 475             av_log(avctx, AV_LOG_DEBUG, "Subband Count: %"PRIu16"\n", data);
 476             if (data != SUBBAND_COUNT && data != SUBBAND_COUNT_3D) {
 477                 av_log(avctx, AV_LOG_ERROR, "Subband Count of %"PRIu16" is unsupported\n", data);
 478                 ret = AVERROR_PATCHWELCOME;
 479                 break;
 480             }
 481         } else if (tag == ChannelNumber) {
 482             s->channel_num = data;
 483             av_log(avctx, AV_LOG_DEBUG, "Channel number %"PRIu16"\n", data);
 484             if (s->channel_num >= s->planes) {
 485                 av_log(avctx, AV_LOG_ERROR, "Invalid channel number\n");
 486                 ret = AVERROR(EINVAL);
 487                 break;
 488             }
 489             init_plane_defaults(s);
 490         } else if (tag == SubbandNumber) {
 491             if (s->subband_num != 0 && data == 1)  // hack
 492                 s->level++;
 493             av_log(avctx, AV_LOG_DEBUG, "Subband number %"PRIu16"\n", data);
 494             s->subband_num = data;
 495             if ((s->transform_type == 0 && s->level >= DWT_LEVELS) ||
 496                 (s->transform_type == 2 && s->level >= DWT_LEVELS_3D)) {
 497                 av_log(avctx, AV_LOG_ERROR, "Invalid level\n");
 498                 ret = AVERROR(EINVAL);
 499                 break;
 500             }
 501             if (s->subband_num > 3) {
 502                 av_log(avctx, AV_LOG_ERROR, "Invalid subband number\n");
 503                 ret = AVERROR(EINVAL);
 504                 break;
 505             }
 506         } else if (tag == SubbandBand) {
 507             av_log(avctx, AV_LOG_DEBUG, "Subband number actual %"PRIu16"\n", data);
 508             s->subband_num_actual = data;
 509             if ((s->transform_type == 0 && s->subband_num_actual >= SUBBAND_COUNT) ||
 510                 (s->transform_type == 2 && s->subband_num_actual >= SUBBAND_COUNT_3D && s->subband_num_actual != 255)) {
 511                 av_log(avctx, AV_LOG_ERROR, "Invalid subband number actual\n");
 512                 ret = AVERROR(EINVAL);
 513                 break;
 514             }
 515         } else if (tag == LowpassPrecision)
 516             av_log(avctx, AV_LOG_DEBUG, "Lowpass precision bits: %"PRIu16"\n", data);
 517         else if (tag == Quantization) {
 518             s->quantisation = data;
 519             av_log(avctx, AV_LOG_DEBUG, "Quantisation: %"PRIu16"\n", data);
 520         } else if (tag == PrescaleTable) {
 521             for (i = 0; i < 8; i++)
 522                 s->prescale_table[i] = (data >> (14 - i * 2)) & 0x3;
 523             av_log(avctx, AV_LOG_DEBUG, "Prescale table: %x\n", data);
 524         } else if (tag == BandEncoding) {
 525             if (!data || data > 5) {
 526                 av_log(avctx, AV_LOG_ERROR, "Invalid band encoding\n");
 527                 ret = AVERROR(EINVAL);
 528                 break;
 529             }
 530             s->band_encoding = data;
 531             av_log(avctx, AV_LOG_DEBUG, "Encode Method for Subband %d : %x\n", s->subband_num_actual, data);
 532         } else if (tag == LowpassWidth) {
 533             av_log(avctx, AV_LOG_DEBUG, "Lowpass width %"PRIu16"\n", data);
 534             s->plane[s->channel_num].band[0][0].width  = data;
 535             s->plane[s->channel_num].band[0][0].stride = data;
 536         } else if (tag == LowpassHeight) {
 537             av_log(avctx, AV_LOG_DEBUG, "Lowpass height %"PRIu16"\n", data);
 538             s->plane[s->channel_num].band[0][0].height = data;
 539         } else if (tag == SampleType) {
 540             s->sample_type = data;
 541             av_log(avctx, AV_LOG_DEBUG, "Sample type? %"PRIu16"\n", data);
 542         } else if (tag == TransformType) {
 543             if (data > 2) {
 544                 av_log(avctx, AV_LOG_ERROR, "Invalid transform type\n");
 545                 ret = AVERROR(EINVAL);
 546                 break;
 547             }
 548             s->transform_type = data;
 549             av_log(avctx, AV_LOG_DEBUG, "Transform type %"PRIu16"\n", data);
 550         } else if (abstag >= 0x4000 && abstag <= 0x40ff) {
 551             if (abstag == 0x4001)
 552                 s->peak.level = 0;
 553             av_log(avctx, AV_LOG_DEBUG, "Small chunk length %d %s\n", data * 4, tag < 0 ? "optional" : "required");
 554             bytestream2_skipu(&gb, data * 4);
 555         } else if (tag == FrameIndex) {
 556             av_log(avctx, AV_LOG_DEBUG, "Frame index %"PRIu16"\n", data);
 557             s->frame_index = data;
 558         } else if (tag == SampleIndexTable) {
 559             av_log(avctx, AV_LOG_DEBUG, "tag=2 header - skipping %i tag/value pairs\n", data);
 560             if (data > bytestream2_get_bytes_left(&gb) / 4) {
 561                 av_log(avctx, AV_LOG_ERROR, "too many tag/value pairs (%d)\n", data);
 562                 ret = AVERROR_INVALIDDATA;
 563                 break;
 564             }
 565             for (i = 0; i < data; i++) {
 566                 uint16_t tag2 = bytestream2_get_be16(&gb);
 567                 uint16_t val2 = bytestream2_get_be16(&gb);
 568                 av_log(avctx, AV_LOG_DEBUG, "Tag/Value = %x %x\n", tag2, val2);
 569             }
 570         } else if (tag == HighpassWidth) {
 571             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);
 572             if (data < 3) {
 573                 av_log(avctx, AV_LOG_ERROR, "Invalid highpass width\n");
 574                 ret = AVERROR(EINVAL);
 575                 break;
 576             }
 577             s->plane[s->channel_num].band[s->level][s->subband_num].width  = data;
 578             s->plane[s->channel_num].band[s->level][s->subband_num].stride = FFALIGN(data, 8);
 579         } else if (tag == HighpassHeight) {
 580             av_log(avctx, AV_LOG_DEBUG, "Highpass height %i\n", data);
 581             if (data < 3) {
 582                 av_log(avctx, AV_LOG_ERROR, "Invalid highpass height\n");
 583                 ret = AVERROR(EINVAL);
 584                 break;
 585             }
 586             s->plane[s->channel_num].band[s->level][s->subband_num].height = data;
 587         } else if (tag == BandWidth) {
 588             av_log(avctx, AV_LOG_DEBUG, "Highpass width2 %i\n", data);
 589             if (data < 3) {
 590                 av_log(avctx, AV_LOG_ERROR, "Invalid highpass width2\n");
 591                 ret = AVERROR(EINVAL);
 592                 break;
 593             }
 594             s->plane[s->channel_num].band[s->level][s->subband_num].width  = data;
 595             s->plane[s->channel_num].band[s->level][s->subband_num].stride = FFALIGN(data, 8);
 596         } else if (tag == BandHeight) {
 597             av_log(avctx, AV_LOG_DEBUG, "Highpass height2 %i\n", data);
 598             if (data < 3) {
 599                 av_log(avctx, AV_LOG_ERROR, "Invalid highpass height2\n");
 600                 ret = AVERROR(EINVAL);
 601                 break;
 602             }
 603             s->plane[s->channel_num].band[s->level][s->subband_num].height = data;
 604         } else if (tag == InputFormat) {
 605             av_log(avctx, AV_LOG_DEBUG, "Input format %i\n", data);
 606             if (s->coded_format == AV_PIX_FMT_NONE ||
 607                 s->coded_format == AV_PIX_FMT_YUV422P10) {
 608                 if (data >= 100 && data <= 105) {
 609                     s->coded_format = AV_PIX_FMT_BAYER_RGGB16;
 610                 } else if (data >= 122 && data <= 128) {
 611                     s->coded_format = AV_PIX_FMT_GBRP12;
 612                 } else if (data == 30) {
 613                     s->coded_format = AV_PIX_FMT_GBRAP12;
 614                 } else {
 615                     s->coded_format = AV_PIX_FMT_YUV422P10;
 616                 }
 617                 s->planes = s->coded_format == AV_PIX_FMT_BAYER_RGGB16 ? 4 : av_pix_fmt_count_planes(s->coded_format);
 618             }
 619         } else if (tag == BandCodingFlags) {
 620             s->codebook = data & 0xf;
 621             s->difference_coding = (data >> 4) & 1;
 622             av_log(avctx, AV_LOG_DEBUG, "Other codebook? %i\n", s->codebook);
 623         } else if (tag == Precision) {
 624             av_log(avctx, AV_LOG_DEBUG, "Precision %i\n", data);
 625             if (!(data == 10 || data == 12)) {
 626                 av_log(avctx, AV_LOG_ERROR, "Invalid bits per channel\n");
 627                 ret = AVERROR(EINVAL);
 628                 break;
 629             }
 630             avctx->bits_per_raw_sample = s->bpc = data;
 631         } else if (tag == EncodedFormat) {
 632             av_log(avctx, AV_LOG_DEBUG, "Sample format? %i\n", data);
 633             if (data == 1) {
 634                 s->coded_format = AV_PIX_FMT_YUV422P10;
 635             } else if (data == 2) {
 636                 s->coded_format = AV_PIX_FMT_BAYER_RGGB16;
 637             } else if (data == 3) {
 638                 s->coded_format = AV_PIX_FMT_GBRP12;
 639             } else if (data == 4) {
 640                 s->coded_format = AV_PIX_FMT_GBRAP12;
 641             } else {
 642                 avpriv_report_missing_feature(avctx, "Sample format of %"PRIu16, data);
 643                 ret = AVERROR_PATCHWELCOME;
 644                 break;
 645             }
 646             s->planes = data == 2 ? 4 : av_pix_fmt_count_planes(s->coded_format);
 647         } else if (tag == -85) {
 648             av_log(avctx, AV_LOG_DEBUG, "Cropped height %"PRIu16"\n", data);
 649             s->cropped_height = data;
 650         } else if (tag == -75) {
 651             s->peak.offset &= ~0xffff;
 652             s->peak.offset |= (data & 0xffff);
 653             s->peak.base    = gb;
 654             s->peak.level   = 0;
 655         } else if (tag == -76) {
 656             s->peak.offset &= 0xffff;
 657             s->peak.offset |= (data & 0xffffU)<<16;
 658             s->peak.base    = gb;
 659             s->peak.level   = 0;
 660         } else if (tag == -74 && s->peak.offset) {
 661             s->peak.level = data;
 662             bytestream2_seek(&s->peak.base, s->peak.offset - 4, SEEK_CUR);
 663         } else
 664             av_log(avctx, AV_LOG_DEBUG,  "Unknown tag %i data %x\n", tag, data);
 665
 666         if (tag == BitstreamMarker && data == 0xf0f &&
 667             s->coded_format != AV_PIX_FMT_NONE) {
 668             int lowpass_height = s->plane[s->channel_num].band[0][0].height;
 669             int lowpass_width  = s->plane[s->channel_num].band[0][0].width;
 670             int factor = s->coded_format == AV_PIX_FMT_BAYER_RGGB16 ? 2 : 1;
 671
 672             if (s->coded_width) {
 673                 s->coded_width *= factor;
 674             }
 675
 676             if (s->coded_height) {
 677                 s->coded_height *= factor;
 678             }
 679
 680             if (!s->a_width && !s->coded_width) {
 681                 s->coded_width = lowpass_width * factor * 8;
 682             }
 683
 684             if (!s->a_height && !s->coded_height) {
 685                 s->coded_height = lowpass_height * factor * 8;
 686             }
 687
 688             if (s->a_width && !s->coded_width)
 689                 s->coded_width = s->a_width;
 690             if (s->a_height && !s->coded_height)
 691                 s->coded_height = s->a_height;
 692
 693             if (s->a_width != s->coded_width || s->a_height != s->coded_height ||
 694                 s->a_format != s->coded_format) {
 695                 free_buffers(s);
 696                 if ((ret = alloc_buffers(avctx)) < 0) {
 697                     free_buffers(s);
 698                     return ret;
 699                 }
 700             }
 701             ret = ff_set_dimensions(avctx, s->coded_width, s->coded_height);
 702             if (ret < 0)
 703                 return ret;
 704             if (s->cropped_height) {
 705                 unsigned height = s->cropped_height << (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16);
 706                 if (avctx->height < height)
 707                     return AVERROR_INVALIDDATA;
 708                 avctx->height = height;
 709             }
 710             frame.f->width =
 711             frame.f->height = 0;
 712
 713             if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0)
 714                 return ret;
 715
 716             s->coded_width = 0;
 717             s->coded_height = 0;
 718             s->coded_format = AV_PIX_FMT_NONE;
 719             got_buffer = 1;
 720         } else if (tag == FrameIndex && data == 1 && s->sample_type == 1 && s->frame_type == 2) {
 721             frame.f->width =
 722             frame.f->height = 0;
 723
 724             if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0)
 725                 return ret;
 726             s->coded_width = 0;
 727             s->coded_height = 0;
 728             s->coded_format = AV_PIX_FMT_NONE;
 729             got_buffer = 1;
 730         }
 731
 732         if (s->subband_num_actual == 255)
 733             goto finish;
 734         coeff_data = s->plane[s->channel_num].subband[s->subband_num_actual];
 735
 736         /* Lowpass coefficients */
 737         if (tag == BitstreamMarker && data == 0xf0f && s->a_width && s->a_height) {
 738             int lowpass_height = s->plane[s->channel_num].band[0][0].height;
 739             int lowpass_width  = s->plane[s->channel_num].band[0][0].width;
 740             int lowpass_a_height = s->plane[s->channel_num].band[0][0].a_height;
 741             int lowpass_a_width  = s->plane[s->channel_num].band[0][0].a_width;
 742
 743             if (lowpass_width < 3 ||
 744                 lowpass_width > lowpass_a_width) {
 745                 av_log(avctx, AV_LOG_ERROR, "Invalid lowpass width\n");
 746                 ret = AVERROR(EINVAL);
 747                 goto end;
 748             }
 749
 750             if (lowpass_height < 3 ||
 751                 lowpass_height > lowpass_a_height) {
 752                 av_log(avctx, AV_LOG_ERROR, "Invalid lowpass height\n");
 753                 ret = AVERROR(EINVAL);
 754                 goto end;
 755             }
 756
 757             if (!got_buffer) {
 758                 av_log(avctx, AV_LOG_ERROR, "No end of header tag found\n");
 759                 ret = AVERROR(EINVAL);
 760                 goto end;
 761             }
 762
 763             if (lowpass_height > lowpass_a_height || lowpass_width > lowpass_a_width ||
 764                 lowpass_a_width * lowpass_a_height * sizeof(int16_t) > bytestream2_get_bytes_left(&gb)) {
 765                 av_log(avctx, AV_LOG_ERROR, "Too many lowpass coefficients\n");
 766                 ret = AVERROR(EINVAL);
 767                 goto end;
 768             }
 769
 770             av_log(avctx, AV_LOG_DEBUG, "Start of lowpass coeffs component %d height:%d, width:%d\n", s->channel_num, lowpass_height, lowpass_width);
 771             for (i = 0; i < lowpass_height; i++) {
 772                 for (j = 0; j < lowpass_width; j++)
 773                     coeff_data[j] = bytestream2_get_be16u(&gb);
 774
 775                 coeff_data += lowpass_width;
 776             }
 777
 778             /* Align to mod-4 position to continue reading tags */
 779             bytestream2_seek(&gb, bytestream2_tell(&gb) & 3, SEEK_CUR);
 780
 781             /* Copy last line of coefficients if odd height */
 782             if (lowpass_height & 1) {
 783                 memcpy(&coeff_data[lowpass_height * lowpass_width],
 784                        &coeff_data[(lowpass_height - 1) * lowpass_width],
 785                        lowpass_width * sizeof(*coeff_data));
 786             }
 787
 788             av_log(avctx, AV_LOG_DEBUG, "Lowpass coefficients %d\n", lowpass_width * lowpass_height);
 789         }
 790
 791         if ((tag == BandHeader || tag == BandSecondPass) && s->subband_num_actual != 255 && s->a_width && s->a_height) {
 792             int highpass_height = s->plane[s->channel_num].band[s->level][s->subband_num].height;
 793             int highpass_width  = s->plane[s->channel_num].band[s->level][s->subband_num].width;
 794             int highpass_a_width = s->plane[s->channel_num].band[s->level][s->subband_num].a_width;
 795             int highpass_a_height = s->plane[s->channel_num].band[s->level][s->subband_num].a_height;
 796             int highpass_stride = s->plane[s->channel_num].band[s->level][s->subband_num].stride;
 797             int expected;
 798             int a_expected = highpass_a_height * highpass_a_width;
 799             int level, run, coeff;
 800             int count = 0, bytes;
 801
 802             if (!got_buffer) {
 803                 av_log(avctx, AV_LOG_ERROR, "No end of header tag found\n");
 804                 ret = AVERROR(EINVAL);
 805                 goto end;
 806             }
 807
 808             if (highpass_height > highpass_a_height || highpass_width > highpass_a_width || a_expected < highpass_height * (uint64_t)highpass_stride) {
 809                 av_log(avctx, AV_LOG_ERROR, "Too many highpass coefficients\n");
 810                 ret = AVERROR(EINVAL);
 811                 goto end;
 812             }
 813             expected = highpass_height * highpass_stride;
 814
 815             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);
 816
 817             ret = init_get_bits8(&s->gb, gb.buffer, bytestream2_get_bytes_left(&gb));
 818             if (ret < 0)
 819                 goto end;
 820             {
 821                 OPEN_READER(re, &s->gb);
 822
 823                 const int lossless = s->band_encoding == 5;
 824
 825                 if (s->codebook == 0 && s->transform_type == 2 && s->subband_num_actual == 7)
 826                     s->codebook = 1;
 827                 if (!s->codebook) {
 828                     while (1) {
 829                         UPDATE_CACHE(re, &s->gb);
 830                         GET_RL_VLC(level, run, re, &s->gb, s->table_9_rl_vlc,
 831                                    VLC_BITS, 3, 1);
 832
 833                         /* escape */
 834                         if (level == 64)
 835                             break;
 836
 837                         count += run;
 838
 839                         if (count > expected)
 840                             break;
 841
 842                         if (!lossless)
 843                             coeff = dequant_and_decompand(s, level, s->quantisation, 0);
 844                         else
 845                             coeff = level;
 846                         if (tag == BandSecondPass) {
 847                             const uint16_t q = s->quantisation;
 848
 849                             for (i = 0; i < run; i++) {
 850                                 *coeff_data |= coeff << 8;
 851                                 *coeff_data++ *= q;
 852                             }
 853                         } else {
 854                             for (i = 0; i < run; i++)
 855                                 *coeff_data++ = coeff;
 856                         }
 857                     }
 858                 } else {
 859                     while (1) {
 860                         UPDATE_CACHE(re, &s->gb);
 861                         GET_RL_VLC(level, run, re, &s->gb, s->table_18_rl_vlc,
 862                                    VLC_BITS, 3, 1);
 863
 864                         /* escape */
 865                         if (level == 255 && run == 2)
 866                             break;
 867
 868                         count += run;
 869
 870                         if (count > expected)
 871                             break;
 872
 873                         if (!lossless)
 874                             coeff = dequant_and_decompand(s, level, s->quantisation, s->codebook);
 875                         else
 876                             coeff = level;
 877                         if (tag == BandSecondPass) {
 878                             const uint16_t q = s->quantisation;
 879
 880                             for (i = 0; i < run; i++) {
 881                                 *coeff_data |= coeff << 8;
 882                                 *coeff_data++ *= q;
 883                             }
 884                         } else {
 885                             for (i = 0; i < run; i++)
 886                                 *coeff_data++ = coeff;
 887                         }
 888                     }
 889                 }
 890                 CLOSE_READER(re, &s->gb);
 891             }
 892
 893             if (count > expected) {
 894                 av_log(avctx, AV_LOG_ERROR, "Escape codeword not found, probably corrupt data\n");
 895                 ret = AVERROR(EINVAL);
 896                 goto end;
 897             }
 898             if (s->peak.level)
 899                 peak_table(coeff_data - count, &s->peak, count);
 900             if (s->difference_coding)
 901                 difference_coding(s->plane[s->channel_num].subband[s->subband_num_actual], highpass_width, highpass_height);
 902
 903             bytes = FFALIGN(AV_CEIL_RSHIFT(get_bits_count(&s->gb), 3), 4);
 904             if (bytes > bytestream2_get_bytes_left(&gb)) {
 905                 av_log(avctx, AV_LOG_ERROR, "Bitstream overread error\n");
 906                 ret = AVERROR(EINVAL);
 907                 goto end;
 908             } else
 909                 bytestream2_seek(&gb, bytes, SEEK_CUR);
 910
 911             av_log(avctx, AV_LOG_DEBUG, "End subband coeffs %i extra %i\n", count, count - expected);
 912 finish:
 913             if (s->subband_num_actual != 255)
 914                 s->codebook = 0;
 915
 916             /* Copy last line of coefficients if odd height */
 917             if (highpass_height & 1) {
 918                 memcpy(&coeff_data[highpass_height * highpass_stride],
 919                        &coeff_data[(highpass_height - 1) * highpass_stride],
 920                        highpass_stride * sizeof(*coeff_data));
 921             }
 922         }
 923     }
 924
 925     s->planes = av_pix_fmt_count_planes(avctx->pix_fmt);
 926     if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16) {
 927         s->progressive = 1;
 928         s->planes = 4;
 929     }
 930
 931     ff_thread_finish_setup(avctx);
 932
 933     if (!s->a_width || !s->a_height || s->a_format == AV_PIX_FMT_NONE ||
 934         s->coded_width || s->coded_height || s->coded_format != AV_PIX_FMT_NONE) {
 935         av_log(avctx, AV_LOG_ERROR, "Invalid dimensions\n");
 936         ret = AVERROR(EINVAL);
 937         goto end;
 938     }
 939
 940     if (!got_buffer) {
 941         av_log(avctx, AV_LOG_ERROR, "No end of header tag found\n");
 942         ret = AVERROR(EINVAL);
 943         goto end;
 944     }
 945
 946     if (s->transform_type == 0 && s->sample_type != 1) {
 947         for (plane = 0; plane < s->planes && !ret; plane++) {
 948             /* level 1 */
 949             int lowpass_height  = s->plane[plane].band[0][0].height;
 950             int lowpass_width   = s->plane[plane].band[0][0].width;
 951             int highpass_stride = s->plane[plane].band[0][1].stride;
 952             int act_plane = plane == 1 ? 2 : plane == 2 ? 1 : plane;
 953             ptrdiff_t dst_linesize;
 954             int16_t *low, *high, *output, *dst;
 955
 956             if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16) {
 957                 act_plane = 0;
 958                 dst_linesize = pic->linesize[act_plane];
 959             } else {
 960                 dst_linesize = pic->linesize[act_plane] / 2;
 961             }
 962
 963             if (lowpass_height > s->plane[plane].band[0][0].a_height || lowpass_width > s->plane[plane].band[0][0].a_width ||
 964                 !highpass_stride || s->plane[plane].band[0][1].width > s->plane[plane].band[0][1].a_width) {
 965                 av_log(avctx, AV_LOG_ERROR, "Invalid plane dimensions\n");
 966                 ret = AVERROR(EINVAL);
 967                 goto end;
 968             }
 969
 970             av_log(avctx, AV_LOG_DEBUG, "Decoding level 1 plane %i %i %i %i\n", plane, lowpass_height, lowpass_width, highpass_stride);
 971
 972             low    = s->plane[plane].subband[0];
 973             high   = s->plane[plane].subband[2];
 974             output = s->plane[plane].l_h[0];
 975             for (i = 0; i < lowpass_width; i++) {
 976                 vert_filter(output, lowpass_width, low, lowpass_width, high, highpass_stride, lowpass_height);
 977                 low++;
 978                 high++;
 979                 output++;
 980             }
 981
 982             low    = s->plane[plane].subband[1];
 983             high   = s->plane[plane].subband[3];
 984             output = s->plane[plane].l_h[1];
 985
 986             for (i = 0; i < lowpass_width; i++) {
 987                 // note the stride of "low" is highpass_stride
 988                 vert_filter(output, lowpass_width, low, highpass_stride, high, highpass_stride, lowpass_height);
 989                 low++;
 990                 high++;
 991                 output++;
 992             }
 993
 994             low    = s->plane[plane].l_h[0];
 995             high   = s->plane[plane].l_h[1];
 996             output = s->plane[plane].subband[0];
 997             for (i = 0; i < lowpass_height * 2; i++) {
 998                 horiz_filter(output, low, high, lowpass_width);
 999                 low    += lowpass_width;
1000                 high   += lowpass_width;
1001                 output += lowpass_width * 2;
1002             }
1003             if (s->bpc == 12) {
1004                 output = s->plane[plane].subband[0];
1005                 for (i = 0; i < lowpass_height * 2; i++) {
1006                     for (j = 0; j < lowpass_width * 2; j++)
1007                         output[j] *= 4;
1008
1009                     output += lowpass_width * 2;
1010                 }
1011             }
1012
1013             /* level 2 */
1014             lowpass_height  = s->plane[plane].band[1][1].height;
1015             lowpass_width   = s->plane[plane].band[1][1].width;
1016             highpass_stride = s->plane[plane].band[1][1].stride;
1017
1018             if (lowpass_height > s->plane[plane].band[1][1].a_height || lowpass_width > s->plane[plane].band[1][1].a_width ||
1019                 !highpass_stride || s->plane[plane].band[1][1].width > s->plane[plane].band[1][1].a_width) {
1020                 av_log(avctx, AV_LOG_ERROR, "Invalid plane dimensions\n");
1021                 ret = AVERROR(EINVAL);
1022                 goto end;
1023             }
1024
1025             av_log(avctx, AV_LOG_DEBUG, "Level 2 plane %i %i %i %i\n", plane, lowpass_height, lowpass_width, highpass_stride);
1026
1027             low    = s->plane[plane].subband[0];
1028             high   = s->plane[plane].subband[5];
1029             output = s->plane[plane].l_h[3];
1030             for (i = 0; i < lowpass_width; i++) {
1031                 vert_filter(output, lowpass_width, low, lowpass_width, high, highpass_stride, lowpass_height);
1032                 low++;
1033                 high++;
1034                 output++;
1035             }
1036
1037             low    = s->plane[plane].subband[4];
1038             high   = s->plane[plane].subband[6];
1039             output = s->plane[plane].l_h[4];
1040             for (i = 0; i < lowpass_width; i++) {
1041                 vert_filter(output, lowpass_width, low, highpass_stride, high, highpass_stride, lowpass_height);
1042                 low++;
1043                 high++;
1044                 output++;
1045             }
1046
1047             low    = s->plane[plane].l_h[3];
1048             high   = s->plane[plane].l_h[4];
1049             output = s->plane[plane].subband[0];
1050             for (i = 0; i < lowpass_height * 2; i++) {
1051                 horiz_filter(output, low, high, lowpass_width);
1052                 low    += lowpass_width;
1053                 high   += lowpass_width;
1054                 output += lowpass_width * 2;
1055             }
1056
1057             output = s->plane[plane].subband[0];
1058             for (i = 0; i < lowpass_height * 2; i++) {
1059                 for (j = 0; j < lowpass_width * 2; j++)
1060                     output[j] *= 4;
1061
1062                 output += lowpass_width * 2;
1063             }
1064
1065             /* level 3 */
1066             lowpass_height  = s->plane[plane].band[2][1].height;
1067             lowpass_width   = s->plane[plane].band[2][1].width;
1068             highpass_stride = s->plane[plane].band[2][1].stride;
1069
1070             if (lowpass_height > s->plane[plane].band[2][1].a_height || lowpass_width > s->plane[plane].band[2][1].a_width ||
1071                 !highpass_stride || s->plane[plane].band[2][1].width > s->plane[plane].band[2][1].a_width) {
1072                 av_log(avctx, AV_LOG_ERROR, "Invalid plane dimensions\n");
1073                 ret = AVERROR(EINVAL);
1074                 goto end;
1075             }
1076
1077             av_log(avctx, AV_LOG_DEBUG, "Level 3 plane %i %i %i %i\n", plane, lowpass_height, lowpass_width, highpass_stride);
1078             if (s->progressive) {
1079                 low    = s->plane[plane].subband[0];
1080                 high   = s->plane[plane].subband[8];
1081                 output = s->plane[plane].l_h[6];
1082                 for (i = 0; i < lowpass_width; i++) {
1083                     vert_filter(output, lowpass_width, low, lowpass_width, high, highpass_stride, lowpass_height);
1084                     low++;
1085                     high++;
1086                     output++;
1087                 }
1088
1089                 low    = s->plane[plane].subband[7];
1090                 high   = s->plane[plane].subband[9];
1091                 output = s->plane[plane].l_h[7];
1092                 for (i = 0; i < lowpass_width; i++) {
1093                     vert_filter(output, lowpass_width, low, highpass_stride, high, highpass_stride, lowpass_height);
1094                     low++;
1095                     high++;
1096                     output++;
1097                 }
1098
1099                 dst = (int16_t *)pic->data[act_plane];
1100                 if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16) {
1101                     if (plane & 1)
1102                         dst++;
1103                     if (plane > 1)
1104                         dst += pic->linesize[act_plane] >> 1;
1105                 }
1106                 low  = s->plane[plane].l_h[6];
1107                 high = s->plane[plane].l_h[7];
1108
1109                 if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16 &&
1110                     (lowpass_height * 2 > avctx->coded_height / 2 ||
1111                      lowpass_width  * 2 > avctx->coded_width  / 2    )
1112                     ) {
1113                     ret = AVERROR_INVALIDDATA;
1114                     goto end;
1115                 }
1116
1117                 for (i = 0; i < lowpass_height * 2; i++) {
1118                     if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16)
1119                         horiz_filter_clip_bayer(dst, low, high, lowpass_width, s->bpc);
1120                     else
1121                         horiz_filter_clip(dst, low, high, lowpass_width, s->bpc);
1122                     if (avctx->pix_fmt == AV_PIX_FMT_GBRAP12 && act_plane == 3)
1123                         process_alpha(dst, lowpass_width * 2);
1124                     low  += lowpass_width;
1125                     high += lowpass_width;
1126                     dst  += dst_linesize;
1127                 }
1128             } else {
1129                 av_log(avctx, AV_LOG_DEBUG, "interlaced frame ? %d", pic->interlaced_frame);
1130                 pic->interlaced_frame = 1;
1131                 low    = s->plane[plane].subband[0];
1132                 high   = s->plane[plane].subband[7];
1133                 output = s->plane[plane].l_h[6];
1134                 for (i = 0; i < lowpass_height; i++) {
1135                     horiz_filter(output, low, high, lowpass_width);
1136                     low    += lowpass_width;
1137                     high   += lowpass_width;
1138                     output += lowpass_width * 2;
1139                 }
1140
1141                 low    = s->plane[plane].subband[8];
1142                 high   = s->plane[plane].subband[9];
1143                 output = s->plane[plane].l_h[7];
1144                 for (i = 0; i < lowpass_height; i++) {
1145                     horiz_filter(output, low, high, lowpass_width);
1146                     low    += lowpass_width;
1147                     high   += lowpass_width;
1148                     output += lowpass_width * 2;
1149                 }
1150
1151                 dst  = (int16_t *)pic->data[act_plane];
1152                 low  = s->plane[plane].l_h[6];
1153                 high = s->plane[plane].l_h[7];
1154                 for (i = 0; i < lowpass_height; i++) {
1155                     interlaced_vertical_filter(dst, low, high, lowpass_width * 2,  pic->linesize[act_plane]/2, act_plane);
1156                     low  += lowpass_width * 2;
1157                     high += lowpass_width * 2;
1158                     dst  += pic->linesize[act_plane];
1159                 }
1160             }
1161         }
1162     } else if (s->transform_type == 2 && (avctx->internal->is_copy || s->frame_index == 1 || s->sample_type != 1)) {
1163         for (plane = 0; plane < s->planes && !ret; plane++) {
1164             int lowpass_height  = s->plane[plane].band[0][0].height;
1165             int lowpass_width   = s->plane[plane].band[0][0].width;
1166             int highpass_stride = s->plane[plane].band[0][1].stride;
1167             int act_plane = plane == 1 ? 2 : plane == 2 ? 1 : plane;
1168             int16_t *low, *high, *output, *dst;
1169             ptrdiff_t dst_linesize;
1170
1171             if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16) {
1172                 act_plane = 0;
1173                 dst_linesize = pic->linesize[act_plane];
1174             } else {
1175                 dst_linesize = pic->linesize[act_plane] / 2;
1176             }
1177
1178             if (lowpass_height > s->plane[plane].band[0][0].a_height || lowpass_width > s->plane[plane].band[0][0].a_width ||
1179                 !highpass_stride || s->plane[plane].band[0][1].width > s->plane[plane].band[0][1].a_width) {
1180                 av_log(avctx, AV_LOG_ERROR, "Invalid plane dimensions\n");
1181                 ret = AVERROR(EINVAL);
1182                 goto end;
1183             }
1184
1185             av_log(avctx, AV_LOG_DEBUG, "Decoding level 1 plane %i %i %i %i\n", plane, lowpass_height, lowpass_width, highpass_stride);
1186
1187             low    = s->plane[plane].subband[0];
1188             high   = s->plane[plane].subband[2];
1189             output = s->plane[plane].l_h[0];
1190             for (i = 0; i < lowpass_width; i++) {
1191                 vert_filter(output, lowpass_width, low, lowpass_width, high, highpass_stride, lowpass_height);
1192                 low++;
1193                 high++;
1194                 output++;
1195             }
1196
1197             low    = s->plane[plane].subband[1];
1198             high   = s->plane[plane].subband[3];
1199             output = s->plane[plane].l_h[1];
1200             for (i = 0; i < lowpass_width; i++) {
1201                 vert_filter(output, lowpass_width, low, highpass_stride, high, highpass_stride, lowpass_height);
1202                 low++;
1203                 high++;
1204                 output++;
1205             }
1206
1207             low    = s->plane[plane].l_h[0];
1208             high   = s->plane[plane].l_h[1];
1209             output = s->plane[plane].l_h[7];
1210             for (i = 0; i < lowpass_height * 2; i++) {
1211                 horiz_filter(output, low, high, lowpass_width);
1212                 low    += lowpass_width;
1213                 high   += lowpass_width;
1214                 output += lowpass_width * 2;
1215             }
1216             if (s->bpc == 12) {
1217                 output = s->plane[plane].l_h[7];
1218                 for (i = 0; i < lowpass_height * 2; i++) {
1219                     for (j = 0; j < lowpass_width * 2; j++)
1220                         output[j] *= 4;
1221
1222                     output += lowpass_width * 2;
1223                 }
1224             }
1225
1226             lowpass_height  = s->plane[plane].band[1][1].height;
1227             lowpass_width   = s->plane[plane].band[1][1].width;
1228             highpass_stride = s->plane[plane].band[1][1].stride;
1229
1230             if (lowpass_height > s->plane[plane].band[1][1].a_height || lowpass_width > s->plane[plane].band[1][1].a_width ||
1231                 !highpass_stride || s->plane[plane].band[1][1].width > s->plane[plane].band[1][1].a_width) {
1232                 av_log(avctx, AV_LOG_ERROR, "Invalid plane dimensions\n");
1233                 ret = AVERROR(EINVAL);
1234                 goto end;
1235             }
1236
1237             av_log(avctx, AV_LOG_DEBUG, "Level 2 lowpass plane %i %i %i %i\n", plane, lowpass_height, lowpass_width, highpass_stride);
1238
1239             low    = s->plane[plane].l_h[7];
1240             high   = s->plane[plane].subband[5];
1241             output = s->plane[plane].l_h[3];
1242             for (i = 0; i < lowpass_width; i++) {
1243                 vert_filter(output, lowpass_width, low, lowpass_width, high, highpass_stride, lowpass_height);
1244                 low++;
1245                 high++;
1246                 output++;
1247             }
1248
1249             low    = s->plane[plane].subband[4];
1250             high   = s->plane[plane].subband[6];
1251             output = s->plane[plane].l_h[4];
1252             for (i = 0; i < lowpass_width; i++) {
1253                 vert_filter(output, lowpass_width, low, highpass_stride, high, highpass_stride, lowpass_height);
1254                 low++;
1255                 high++;
1256                 output++;
1257             }
1258
1259             low    = s->plane[plane].l_h[3];
1260             high   = s->plane[plane].l_h[4];
1261             output = s->plane[plane].l_h[7];
1262             for (i = 0; i < lowpass_height * 2; i++) {
1263                 horiz_filter(output, low, high, lowpass_width);
1264                 low    += lowpass_width;
1265                 high   += lowpass_width;
1266                 output += lowpass_width * 2;
1267             }
1268
1269             output = s->plane[plane].l_h[7];
1270             for (i = 0; i < lowpass_height * 2; i++) {
1271                 for (j = 0; j < lowpass_width * 2; j++)
1272                     output[j] *= 4;
1273                 output += lowpass_width * 2;
1274             }
1275
1276             low    = s->plane[plane].subband[7];
1277             high   = s->plane[plane].subband[9];
1278             output = s->plane[plane].l_h[3];
1279             for (i = 0; i < lowpass_width; i++) {
1280                 vert_filter(output, lowpass_width, low, lowpass_width, high, highpass_stride, lowpass_height);
1281                 low++;
1282                 high++;
1283                 output++;
1284             }
1285
1286             low    = s->plane[plane].subband[8];
1287             high   = s->plane[plane].subband[10];
1288             output = s->plane[plane].l_h[4];
1289             for (i = 0; i < lowpass_width; i++) {
1290                 vert_filter(output, lowpass_width, low, highpass_stride, high, highpass_stride, lowpass_height);
1291                 low++;
1292                 high++;
1293                 output++;
1294             }
1295
1296             low    = s->plane[plane].l_h[3];
1297             high   = s->plane[plane].l_h[4];
1298             output = s->plane[plane].l_h[9];
1299             for (i = 0; i < lowpass_height * 2; i++) {
1300                 horiz_filter(output, low, high, lowpass_width);
1301                 low    += lowpass_width;
1302                 high   += lowpass_width;
1303                 output += lowpass_width * 2;
1304             }
1305
1306             lowpass_height  = s->plane[plane].band[4][1].height;
1307             lowpass_width   = s->plane[plane].band[4][1].width;
1308             highpass_stride = s->plane[plane].band[4][1].stride;
1309             av_log(avctx, AV_LOG_DEBUG, "temporal level %i %i %i %i\n", plane, lowpass_height, lowpass_width, highpass_stride);
1310
1311             if (lowpass_height > s->plane[plane].band[4][1].a_height || lowpass_width > s->plane[plane].band[4][1].a_width ||
1312                 !highpass_stride || s->plane[plane].band[4][1].width > s->plane[plane].band[4][1].a_width) {
1313                 av_log(avctx, AV_LOG_ERROR, "Invalid plane dimensions\n");
1314                 ret = AVERROR(EINVAL);
1315                 goto end;
1316             }
1317
1318             low    = s->plane[plane].l_h[7];
1319             high   = s->plane[plane].l_h[9];
1320             output = s->plane[plane].l_h[7];
1321             for (i = 0; i < lowpass_height; i++) {
1322                 inverse_temporal_filter(output, low, high, lowpass_width);
1323                 low    += lowpass_width;
1324                 high   += lowpass_width;
1325             }
1326             if (s->progressive) {
1327                 low    = s->plane[plane].l_h[7];
1328                 high   = s->plane[plane].subband[15];
1329                 output = s->plane[plane].l_h[6];
1330                 for (i = 0; i < lowpass_width; i++) {
1331                     vert_filter(output, lowpass_width, low, lowpass_width, high, highpass_stride, lowpass_height);
1332                     low++;
1333                     high++;
1334                     output++;
1335                 }
1336
1337                 low    = s->plane[plane].subband[14];
1338                 high   = s->plane[plane].subband[16];
1339                 output = s->plane[plane].l_h[7];
1340                 for (i = 0; i < lowpass_width; i++) {
1341                     vert_filter(output, lowpass_width, low, highpass_stride, high, highpass_stride, lowpass_height);
1342                     low++;
1343                     high++;
1344                     output++;
1345                 }
1346
1347                 low    = s->plane[plane].l_h[9];
1348                 high   = s->plane[plane].subband[12];
1349                 output = s->plane[plane].l_h[8];
1350                 for (i = 0; i < lowpass_width; i++) {
1351                     vert_filter(output, lowpass_width, low, lowpass_width, high, highpass_stride, lowpass_height);
1352                     low++;
1353                     high++;
1354                     output++;
1355                 }
1356
1357                 low    = s->plane[plane].subband[11];
1358                 high   = s->plane[plane].subband[13];
1359                 output = s->plane[plane].l_h[9];
1360                 for (i = 0; i < lowpass_width; i++) {
1361                     vert_filter(output, lowpass_width, low, highpass_stride, high, highpass_stride, lowpass_height);
1362                     low++;
1363                     high++;
1364                     output++;
1365                 }
1366
1367                 if (s->sample_type == 1)
1368                     continue;
1369
1370                 dst = (int16_t *)pic->data[act_plane];
1371                 if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16) {
1372                     if (plane & 1)
1373                         dst++;
1374                     if (plane > 1)
1375                         dst += pic->linesize[act_plane] >> 1;
1376                 }
1377
1378                 if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16 &&
1379                     (lowpass_height * 2 > avctx->coded_height / 2 ||
1380                      lowpass_width  * 2 > avctx->coded_width  / 2    )
1381                     ) {
1382                     ret = AVERROR_INVALIDDATA;
1383                     goto end;
1384                 }
1385
1386                 low  = s->plane[plane].l_h[6];
1387                 high = s->plane[plane].l_h[7];
1388                 for (i = 0; i < lowpass_height * 2; i++) {
1389                     if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16)
1390                         horiz_filter_clip_bayer(dst, low, high, lowpass_width, s->bpc);
1391                     else
1392                         horiz_filter_clip(dst, low, high, lowpass_width, s->bpc);
1393                     low  += lowpass_width;
1394                     high += lowpass_width;
1395                     dst  += dst_linesize;
1396                 }
1397             } else {
1398                 pic->interlaced_frame = 1;
1399                 low    = s->plane[plane].l_h[7];
1400                 high   = s->plane[plane].subband[14];
1401                 output = s->plane[plane].l_h[6];
1402                 for (i = 0; i < lowpass_height; i++) {
1403                     horiz_filter(output, low, high, lowpass_width);
1404                     low    += lowpass_width;
1405                     high   += lowpass_width;
1406                     output += lowpass_width * 2;
1407                 }
1408
1409                 low    = s->plane[plane].subband[15];
1410                 high   = s->plane[plane].subband[16];
1411                 output = s->plane[plane].l_h[7];
1412                 for (i = 0; i < lowpass_height; i++) {
1413                     horiz_filter(output, low, high, lowpass_width);
1414                     low    += lowpass_width;
1415                     high   += lowpass_width;
1416                     output += lowpass_width * 2;
1417                 }
1418
1419                 low    = s->plane[plane].l_h[9];
1420                 high   = s->plane[plane].subband[11];
1421                 output = s->plane[plane].l_h[8];
1422                 for (i = 0; i < lowpass_height; i++) {
1423                     horiz_filter(output, low, high, lowpass_width);
1424                     low    += lowpass_width;
1425                     high   += lowpass_width;
1426                     output += lowpass_width * 2;
1427                 }
1428
1429                 low    = s->plane[plane].subband[12];
1430                 high   = s->plane[plane].subband[13];
1431                 output = s->plane[plane].l_h[9];
1432                 for (i = 0; i < lowpass_height; i++) {
1433                     horiz_filter(output, low, high, lowpass_width);
1434                     low    += lowpass_width;
1435                     high   += lowpass_width;
1436                     output += lowpass_width * 2;
1437                 }
1438
1439                 if (s->sample_type == 1)
1440                     continue;
1441
1442                 dst  = (int16_t *)pic->data[act_plane];
1443                 low  = s->plane[plane].l_h[6];
1444                 high = s->plane[plane].l_h[7];
1445                 for (i = 0; i < lowpass_height; i++) {
1446                     interlaced_vertical_filter(dst, low, high, lowpass_width * 2,  pic->linesize[act_plane]/2, act_plane);
1447                     low  += lowpass_width * 2;
1448                     high += lowpass_width * 2;
1449                     dst  += pic->linesize[act_plane];
1450                 }
1451             }
1452         }
1453     }
1454
1455     if (s->transform_type == 2 && s->sample_type == 1) {
1456         int16_t *low, *high, *dst;
1457         int lowpass_height, lowpass_width, highpass_stride;
1458         ptrdiff_t dst_linesize;
1459
1460         for (plane = 0; plane < s->planes; plane++) {
1461             int act_plane = plane == 1 ? 2 : plane == 2 ? 1 : plane;
1462
1463             if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16) {
1464                 act_plane = 0;
1465                 dst_linesize = pic->linesize[act_plane];
1466             } else {
1467                 dst_linesize = pic->linesize[act_plane] / 2;
1468             }
1469
1470             lowpass_height  = s->plane[plane].band[4][1].height;
1471             lowpass_width   = s->plane[plane].band[4][1].width;
1472             highpass_stride = s->plane[plane].band[4][1].stride;
1473
1474             if (s->progressive) {
1475                 dst = (int16_t *)pic->data[act_plane];
1476                 low  = s->plane[plane].l_h[8];
1477                 high = s->plane[plane].l_h[9];
1478
1479                 if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16) {
1480                     if (plane & 1)
1481                         dst++;
1482                     if (plane > 1)
1483                         dst += pic->linesize[act_plane] >> 1;
1484                 }
1485
1486                 if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16 &&
1487                     (lowpass_height * 2 > avctx->coded_height / 2 ||
1488                      lowpass_width  * 2 > avctx->coded_width  / 2    )
1489                     ) {
1490                     ret = AVERROR_INVALIDDATA;
1491                     goto end;
1492                 }
1493
1494                 for (i = 0; i < lowpass_height * 2; i++) {
1495                     if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16)
1496                         horiz_filter_clip_bayer(dst, low, high, lowpass_width, s->bpc);
1497                     else
1498                         horiz_filter_clip(dst, low, high, lowpass_width, s->bpc);
1499                     low  += lowpass_width;
1500                     high += lowpass_width;
1501                     dst  += dst_linesize;
1502                 }
1503             } else {
1504                 dst  = (int16_t *)pic->data[act_plane];
1505                 low  = s->plane[plane].l_h[8];
1506                 high = s->plane[plane].l_h[9];
1507                 for (i = 0; i < lowpass_height; i++) {
1508                     interlaced_vertical_filter(dst, low, high, lowpass_width * 2,  pic->linesize[act_plane]/2, act_plane);
1509                     low  += lowpass_width * 2;
1510                     high += lowpass_width * 2;
1511                     dst  += pic->linesize[act_plane];
1512                 }
1513             }
1514         }
1515     }
1516
1517     if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16)
1518         process_bayer(pic, s->bpc);
1519 end:
1520     if (ret < 0)
1521         return ret;
1522
1523     *got_frame = 1;
1524     return avpkt->size;
1525 }
1526
1527 static av_cold int cfhd_close(AVCodecContext *avctx)
1528 {
1529     CFHDContext *s = avctx->priv_data;
1530
1531     free_buffers(s);
1532
1533     ff_free_vlc(&s->vlc_9);
1534     ff_free_vlc(&s->vlc_18);
1535
1536     return 0;
1537 }
1538
1539 #if HAVE_THREADS
1540 static int update_thread_context(AVCodecContext *dst, const AVCodecContext *src)
1541 {
1542     CFHDContext *psrc = src->priv_data;
1543     CFHDContext *pdst = dst->priv_data;
1544     int ret;
1545
1546     if (dst == src || psrc->transform_type == 0)
1547         return 0;
1548
1549     pdst->a_format = psrc->a_format;
1550     pdst->a_width  = psrc->a_width;
1551     pdst->a_height = psrc->a_height;
1552     pdst->transform_type = psrc->transform_type;
1553     pdst->progressive = psrc->progressive;
1554     pdst->planes = psrc->planes;
1555
1556     if (!pdst->plane[0].idwt_buf) {
1557         pdst->coded_width  = pdst->a_width;
1558         pdst->coded_height = pdst->a_height;
1559         pdst->coded_format = pdst->a_format;
1560         ret = alloc_buffers(dst);
1561         if (ret < 0)
1562             return ret;
1563     }
1564
1565     for (int plane = 0; plane < pdst->planes; plane++) {
1566         memcpy(pdst->plane[plane].band, psrc->plane[plane].band, sizeof(pdst->plane[plane].band));
1567         memcpy(pdst->plane[plane].idwt_buf, psrc->plane[plane].idwt_buf,
1568                pdst->plane[plane].idwt_size * sizeof(int16_t));
1569     }
1570
1571     return 0;
1572 }
1573 #endif
1574
1575 AVCodec ff_cfhd_decoder = {
1576     .name             = "cfhd",
1577     .long_name        = NULL_IF_CONFIG_SMALL("Cineform HD"),
1578     .type             = AVMEDIA_TYPE_VIDEO,
1579     .id               = AV_CODEC_ID_CFHD,
1580     .priv_data_size   = sizeof(CFHDContext),
1581     .init             = cfhd_init,
1582     .close            = cfhd_close,
1583     .decode           = cfhd_decode,
1584     .update_thread_context = ONLY_IF_THREADS_ENABLED(update_thread_context),
1585     .capabilities     = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS,
1586     .caps_internal    = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,
1587 };