git.sesse.net Git - ffmpeg/blob - libavcodec/cfhd.c

   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 (abstag == VersionMajor) {
 461             av_log(avctx, AV_LOG_DEBUG, "Version major %"PRIu16"\n", data);
 462         } else if (abstag == VersionMinor) {
 463             av_log(avctx, AV_LOG_DEBUG, "Version minor %"PRIu16"\n", data);
 464         } else if (abstag == VersionRevision) {
 465             av_log(avctx, AV_LOG_DEBUG, "Version revision %"PRIu16"\n", data);
 466         } else if (abstag == VersionEdit) {
 467             av_log(avctx, AV_LOG_DEBUG, "Version edit %"PRIu16"\n", data);
 468         } else if (abstag == Version) {
 469             av_log(avctx, AV_LOG_DEBUG, "Version %"PRIu16"\n", data);
 470         } else if (tag == ImageWidth) {
 471             av_log(avctx, AV_LOG_DEBUG, "Width %"PRIu16"\n", data);
 472             s->coded_width = data;
 473         } else if (tag == ImageHeight) {
 474             av_log(avctx, AV_LOG_DEBUG, "Height %"PRIu16"\n", data);
 475             s->coded_height = data;
 476         } else if (tag == ChannelCount) {
 477             av_log(avctx, AV_LOG_DEBUG, "Channel Count: %"PRIu16"\n", data);
 478             s->channel_cnt = data;
 479             if (data > 4) {
 480                 av_log(avctx, AV_LOG_ERROR, "Channel Count of %"PRIu16" is unsupported\n", data);
 481                 ret = AVERROR_PATCHWELCOME;
 482                 break;
 483             }
 484         } else if (tag == SubbandCount) {
 485             av_log(avctx, AV_LOG_DEBUG, "Subband Count: %"PRIu16"\n", data);
 486             if (data != SUBBAND_COUNT && data != SUBBAND_COUNT_3D) {
 487                 av_log(avctx, AV_LOG_ERROR, "Subband Count of %"PRIu16" is unsupported\n", data);
 488                 ret = AVERROR_PATCHWELCOME;
 489                 break;
 490             }
 491         } else if (tag == ChannelNumber) {
 492             s->channel_num = data;
 493             av_log(avctx, AV_LOG_DEBUG, "Channel number %"PRIu16"\n", data);
 494             if (s->channel_num >= s->planes) {
 495                 av_log(avctx, AV_LOG_ERROR, "Invalid channel number\n");
 496                 ret = AVERROR(EINVAL);
 497                 break;
 498             }
 499             init_plane_defaults(s);
 500         } else if (tag == SubbandNumber) {
 501             if (s->subband_num != 0 && data == 1)  // hack
 502                 s->level++;
 503             av_log(avctx, AV_LOG_DEBUG, "Subband number %"PRIu16"\n", data);
 504             s->subband_num = data;
 505             if ((s->transform_type == 0 && s->level >= DWT_LEVELS) ||
 506                 (s->transform_type == 2 && s->level >= DWT_LEVELS_3D)) {
 507                 av_log(avctx, AV_LOG_ERROR, "Invalid level\n");
 508                 ret = AVERROR(EINVAL);
 509                 break;
 510             }
 511             if (s->subband_num > 3) {
 512                 av_log(avctx, AV_LOG_ERROR, "Invalid subband number\n");
 513                 ret = AVERROR(EINVAL);
 514                 break;
 515             }
 516         } else if (tag == SubbandBand) {
 517             av_log(avctx, AV_LOG_DEBUG, "Subband number actual %"PRIu16"\n", data);
 518             s->subband_num_actual = data;
 519             if ((s->transform_type == 0 && s->subband_num_actual >= SUBBAND_COUNT) ||
 520                 (s->transform_type == 2 && s->subband_num_actual >= SUBBAND_COUNT_3D && s->subband_num_actual != 255)) {
 521                 av_log(avctx, AV_LOG_ERROR, "Invalid subband number actual\n");
 522                 ret = AVERROR(EINVAL);
 523                 break;
 524             }
 525         } else if (tag == LowpassPrecision)
 526             av_log(avctx, AV_LOG_DEBUG, "Lowpass precision bits: %"PRIu16"\n", data);
 527         else if (tag == Quantization) {
 528             s->quantisation = data;
 529             av_log(avctx, AV_LOG_DEBUG, "Quantisation: %"PRIu16"\n", data);
 530         } else if (tag == PrescaleTable) {
 531             for (i = 0; i < 8; i++)
 532                 s->prescale_table[i] = (data >> (14 - i * 2)) & 0x3;
 533             av_log(avctx, AV_LOG_DEBUG, "Prescale table: %x\n", data);
 534         } else if (tag == BandEncoding) {
 535             if (!data || data > 5) {
 536                 av_log(avctx, AV_LOG_ERROR, "Invalid band encoding\n");
 537                 ret = AVERROR(EINVAL);
 538                 break;
 539             }
 540             s->band_encoding = data;
 541             av_log(avctx, AV_LOG_DEBUG, "Encode Method for Subband %d : %x\n", s->subband_num_actual, data);
 542         } else if (tag == LowpassWidth) {
 543             av_log(avctx, AV_LOG_DEBUG, "Lowpass width %"PRIu16"\n", data);
 544             s->plane[s->channel_num].band[0][0].width  = data;
 545             s->plane[s->channel_num].band[0][0].stride = data;
 546         } else if (tag == LowpassHeight) {
 547             av_log(avctx, AV_LOG_DEBUG, "Lowpass height %"PRIu16"\n", data);
 548             s->plane[s->channel_num].band[0][0].height = data;
 549         } else if (tag == SampleType) {
 550             s->sample_type = data;
 551             av_log(avctx, AV_LOG_DEBUG, "Sample type? %"PRIu16"\n", data);
 552         } else if (tag == TransformType) {
 553             if (data > 2) {
 554                 av_log(avctx, AV_LOG_ERROR, "Invalid transform type\n");
 555                 ret = AVERROR(EINVAL);
 556                 break;
 557             }
 558             s->transform_type = data;
 559             av_log(avctx, AV_LOG_DEBUG, "Transform type %"PRIu16"\n", data);
 560         } else if (abstag >= 0x4000 && abstag <= 0x40ff) {
 561             if (abstag == 0x4001)
 562                 s->peak.level = 0;
 563             av_log(avctx, AV_LOG_DEBUG, "Small chunk length %d %s\n", data * 4, tag < 0 ? "optional" : "required");
 564             bytestream2_skipu(&gb, data * 4);
 565         } else if (tag == FrameIndex) {
 566             av_log(avctx, AV_LOG_DEBUG, "Frame index %"PRIu16"\n", data);
 567             s->frame_index = data;
 568         } else if (tag == SampleIndexTable) {
 569             av_log(avctx, AV_LOG_DEBUG, "Sample index table - skipping %i values\n", data);
 570             if (data > bytestream2_get_bytes_left(&gb) / 4) {
 571                 av_log(avctx, AV_LOG_ERROR, "too many values (%d)\n", data);
 572                 ret = AVERROR_INVALIDDATA;
 573                 break;
 574             }
 575             for (i = 0; i < data; i++) {
 576                 uint32_t offset = bytestream2_get_be32(&gb);
 577                 av_log(avctx, AV_LOG_DEBUG, "Offset = %"PRIu32"\n", offset);
 578             }
 579         } else if (tag == HighpassWidth) {
 580             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);
 581             if (data < 3) {
 582                 av_log(avctx, AV_LOG_ERROR, "Invalid highpass width\n");
 583                 ret = AVERROR(EINVAL);
 584                 break;
 585             }
 586             s->plane[s->channel_num].band[s->level][s->subband_num].width  = data;
 587             s->plane[s->channel_num].band[s->level][s->subband_num].stride = FFALIGN(data, 8);
 588         } else if (tag == HighpassHeight) {
 589             av_log(avctx, AV_LOG_DEBUG, "Highpass height %i\n", data);
 590             if (data < 3) {
 591                 av_log(avctx, AV_LOG_ERROR, "Invalid highpass height\n");
 592                 ret = AVERROR(EINVAL);
 593                 break;
 594             }
 595             s->plane[s->channel_num].band[s->level][s->subband_num].height = data;
 596         } else if (tag == BandWidth) {
 597             av_log(avctx, AV_LOG_DEBUG, "Highpass width2 %i\n", data);
 598             if (data < 3) {
 599                 av_log(avctx, AV_LOG_ERROR, "Invalid highpass width2\n");
 600                 ret = AVERROR(EINVAL);
 601                 break;
 602             }
 603             s->plane[s->channel_num].band[s->level][s->subband_num].width  = data;
 604             s->plane[s->channel_num].band[s->level][s->subband_num].stride = FFALIGN(data, 8);
 605         } else if (tag == BandHeight) {
 606             av_log(avctx, AV_LOG_DEBUG, "Highpass height2 %i\n", data);
 607             if (data < 3) {
 608                 av_log(avctx, AV_LOG_ERROR, "Invalid highpass height2\n");
 609                 ret = AVERROR(EINVAL);
 610                 break;
 611             }
 612             s->plane[s->channel_num].band[s->level][s->subband_num].height = data;
 613         } else if (tag == InputFormat) {
 614             av_log(avctx, AV_LOG_DEBUG, "Input format %i\n", data);
 615             if (s->coded_format == AV_PIX_FMT_NONE ||
 616                 s->coded_format == AV_PIX_FMT_YUV422P10) {
 617                 if (data >= 100 && data <= 105) {
 618                     s->coded_format = AV_PIX_FMT_BAYER_RGGB16;
 619                 } else if (data >= 122 && data <= 128) {
 620                     s->coded_format = AV_PIX_FMT_GBRP12;
 621                 } else if (data == 30) {
 622                     s->coded_format = AV_PIX_FMT_GBRAP12;
 623                 } else {
 624                     s->coded_format = AV_PIX_FMT_YUV422P10;
 625                 }
 626                 s->planes = s->coded_format == AV_PIX_FMT_BAYER_RGGB16 ? 4 : av_pix_fmt_count_planes(s->coded_format);
 627             }
 628         } else if (tag == BandCodingFlags) {
 629             s->codebook = data & 0xf;
 630             s->difference_coding = (data >> 4) & 1;
 631             av_log(avctx, AV_LOG_DEBUG, "Other codebook? %i\n", s->codebook);
 632         } else if (tag == Precision) {
 633             av_log(avctx, AV_LOG_DEBUG, "Precision %i\n", data);
 634             if (!(data == 10 || data == 12)) {
 635                 av_log(avctx, AV_LOG_ERROR, "Invalid bits per channel\n");
 636                 ret = AVERROR(EINVAL);
 637                 break;
 638             }
 639             avctx->bits_per_raw_sample = s->bpc = data;
 640         } else if (tag == EncodedFormat) {
 641             av_log(avctx, AV_LOG_DEBUG, "Sample format? %i\n", data);
 642             if (data == 1) {
 643                 s->coded_format = AV_PIX_FMT_YUV422P10;
 644             } else if (data == 2) {
 645                 s->coded_format = AV_PIX_FMT_BAYER_RGGB16;
 646             } else if (data == 3) {
 647                 s->coded_format = AV_PIX_FMT_GBRP12;
 648             } else if (data == 4) {
 649                 s->coded_format = AV_PIX_FMT_GBRAP12;
 650             } else {
 651                 avpriv_report_missing_feature(avctx, "Sample format of %"PRIu16, data);
 652                 ret = AVERROR_PATCHWELCOME;
 653                 break;
 654             }
 655             s->planes = data == 2 ? 4 : av_pix_fmt_count_planes(s->coded_format);
 656         } else if (tag == -85) {
 657             av_log(avctx, AV_LOG_DEBUG, "Cropped height %"PRIu16"\n", data);
 658             s->cropped_height = data;
 659         } else if (tag == -75) {
 660             s->peak.offset &= ~0xffff;
 661             s->peak.offset |= (data & 0xffff);
 662             s->peak.base    = gb;
 663             s->peak.level   = 0;
 664         } else if (tag == -76) {
 665             s->peak.offset &= 0xffff;
 666             s->peak.offset |= (data & 0xffffU)<<16;
 667             s->peak.base    = gb;
 668             s->peak.level   = 0;
 669         } else if (tag == -74 && s->peak.offset) {
 670             s->peak.level = data;
 671             bytestream2_seek(&s->peak.base, s->peak.offset - 4, SEEK_CUR);
 672         } else
 673             av_log(avctx, AV_LOG_DEBUG,  "Unknown tag %i data %x\n", tag, data);
 674
 675         if (tag == BitstreamMarker && data == 0xf0f &&
 676             s->coded_format != AV_PIX_FMT_NONE) {
 677             int lowpass_height = s->plane[s->channel_num].band[0][0].height;
 678             int lowpass_width  = s->plane[s->channel_num].band[0][0].width;
 679             int factor = s->coded_format == AV_PIX_FMT_BAYER_RGGB16 ? 2 : 1;
 680
 681             if (s->coded_width) {
 682                 s->coded_width *= factor;
 683             }
 684
 685             if (s->coded_height) {
 686                 s->coded_height *= factor;
 687             }
 688
 689             if (!s->a_width && !s->coded_width) {
 690                 s->coded_width = lowpass_width * factor * 8;
 691             }
 692
 693             if (!s->a_height && !s->coded_height) {
 694                 s->coded_height = lowpass_height * factor * 8;
 695             }
 696
 697             if (s->a_width && !s->coded_width)
 698                 s->coded_width = s->a_width;
 699             if (s->a_height && !s->coded_height)
 700                 s->coded_height = s->a_height;
 701
 702             if (s->a_width != s->coded_width || s->a_height != s->coded_height ||
 703                 s->a_format != s->coded_format) {
 704                 free_buffers(s);
 705                 if ((ret = alloc_buffers(avctx)) < 0) {
 706                     free_buffers(s);
 707                     return ret;
 708                 }
 709             }
 710             ret = ff_set_dimensions(avctx, s->coded_width, s->coded_height);
 711             if (ret < 0)
 712                 return ret;
 713             if (s->cropped_height) {
 714                 unsigned height = s->cropped_height << (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16);
 715                 if (avctx->height < height)
 716                     return AVERROR_INVALIDDATA;
 717                 avctx->height = height;
 718             }
 719             frame.f->width =
 720             frame.f->height = 0;
 721
 722             if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0)
 723                 return ret;
 724
 725             s->coded_width = 0;
 726             s->coded_height = 0;
 727             s->coded_format = AV_PIX_FMT_NONE;
 728             got_buffer = 1;
 729         } else if (tag == FrameIndex && data == 1 && s->sample_type == 1 && s->frame_type == 2) {
 730             frame.f->width =
 731             frame.f->height = 0;
 732
 733             if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0)
 734                 return ret;
 735             s->coded_width = 0;
 736             s->coded_height = 0;
 737             s->coded_format = AV_PIX_FMT_NONE;
 738             got_buffer = 1;
 739         }
 740
 741         if (s->subband_num_actual == 255)
 742             goto finish;
 743         coeff_data = s->plane[s->channel_num].subband[s->subband_num_actual];
 744
 745         /* Lowpass coefficients */
 746         if (tag == BitstreamMarker && data == 0xf0f && s->a_width && s->a_height) {
 747             int lowpass_height = s->plane[s->channel_num].band[0][0].height;
 748             int lowpass_width  = s->plane[s->channel_num].band[0][0].width;
 749             int lowpass_a_height = s->plane[s->channel_num].band[0][0].a_height;
 750             int lowpass_a_width  = s->plane[s->channel_num].band[0][0].a_width;
 751
 752             if (lowpass_width < 3 ||
 753                 lowpass_width > lowpass_a_width) {
 754                 av_log(avctx, AV_LOG_ERROR, "Invalid lowpass width\n");
 755                 ret = AVERROR(EINVAL);
 756                 goto end;
 757             }
 758
 759             if (lowpass_height < 3 ||
 760                 lowpass_height > lowpass_a_height) {
 761                 av_log(avctx, AV_LOG_ERROR, "Invalid lowpass height\n");
 762                 ret = AVERROR(EINVAL);
 763                 goto end;
 764             }
 765
 766             if (!got_buffer) {
 767                 av_log(avctx, AV_LOG_ERROR, "No end of header tag found\n");
 768                 ret = AVERROR(EINVAL);
 769                 goto end;
 770             }
 771
 772             if (lowpass_height > lowpass_a_height || lowpass_width > lowpass_a_width ||
 773                 lowpass_a_width * lowpass_a_height * sizeof(int16_t) > bytestream2_get_bytes_left(&gb)) {
 774                 av_log(avctx, AV_LOG_ERROR, "Too many lowpass coefficients\n");
 775                 ret = AVERROR(EINVAL);
 776                 goto end;
 777             }
 778
 779             av_log(avctx, AV_LOG_DEBUG, "Start of lowpass coeffs component %d height:%d, width:%d\n", s->channel_num, lowpass_height, lowpass_width);
 780             for (i = 0; i < lowpass_height; i++) {
 781                 for (j = 0; j < lowpass_width; j++)
 782                     coeff_data[j] = bytestream2_get_be16u(&gb);
 783
 784                 coeff_data += lowpass_width;
 785             }
 786
 787             /* Align to mod-4 position to continue reading tags */
 788             bytestream2_seek(&gb, bytestream2_tell(&gb) & 3, SEEK_CUR);
 789
 790             /* Copy last line of coefficients if odd height */
 791             if (lowpass_height & 1) {
 792                 memcpy(&coeff_data[lowpass_height * lowpass_width],
 793                        &coeff_data[(lowpass_height - 1) * lowpass_width],
 794                        lowpass_width * sizeof(*coeff_data));
 795             }
 796
 797             av_log(avctx, AV_LOG_DEBUG, "Lowpass coefficients %d\n", lowpass_width * lowpass_height);
 798         }
 799
 800         if ((tag == BandHeader || tag == BandSecondPass) && s->subband_num_actual != 255 && s->a_width && s->a_height) {
 801             int highpass_height = s->plane[s->channel_num].band[s->level][s->subband_num].height;
 802             int highpass_width  = s->plane[s->channel_num].band[s->level][s->subband_num].width;
 803             int highpass_a_width = s->plane[s->channel_num].band[s->level][s->subband_num].a_width;
 804             int highpass_a_height = s->plane[s->channel_num].band[s->level][s->subband_num].a_height;
 805             int highpass_stride = s->plane[s->channel_num].band[s->level][s->subband_num].stride;
 806             int expected;
 807             int a_expected = highpass_a_height * highpass_a_width;
 808             int level, run, coeff;
 809             int count = 0, bytes;
 810
 811             if (!got_buffer) {
 812                 av_log(avctx, AV_LOG_ERROR, "No end of header tag found\n");
 813                 ret = AVERROR(EINVAL);
 814                 goto end;
 815             }
 816
 817             if (highpass_height > highpass_a_height || highpass_width > highpass_a_width || a_expected < highpass_height * (uint64_t)highpass_stride) {
 818                 av_log(avctx, AV_LOG_ERROR, "Too many highpass coefficients\n");
 819                 ret = AVERROR(EINVAL);
 820                 goto end;
 821             }
 822             expected = highpass_height * highpass_stride;
 823
 824             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);
 825
 826             ret = init_get_bits8(&s->gb, gb.buffer, bytestream2_get_bytes_left(&gb));
 827             if (ret < 0)
 828                 goto end;
 829             {
 830                 OPEN_READER(re, &s->gb);
 831
 832                 const int lossless = s->band_encoding == 5;
 833
 834                 if (s->codebook == 0 && s->transform_type == 2 && s->subband_num_actual == 7)
 835                     s->codebook = 1;
 836                 if (!s->codebook) {
 837                     while (1) {
 838                         UPDATE_CACHE(re, &s->gb);
 839                         GET_RL_VLC(level, run, re, &s->gb, s->table_9_rl_vlc,
 840                                    VLC_BITS, 3, 1);
 841
 842                         /* escape */
 843                         if (level == 64)
 844                             break;
 845
 846                         count += run;
 847
 848                         if (count > expected)
 849                             break;
 850
 851                         if (!lossless)
 852                             coeff = dequant_and_decompand(s, level, s->quantisation, 0);
 853                         else
 854                             coeff = level;
 855                         if (tag == BandSecondPass) {
 856                             const uint16_t q = s->quantisation;
 857
 858                             for (i = 0; i < run; i++) {
 859                                 *coeff_data |= coeff << 8;
 860                                 *coeff_data++ *= q;
 861                             }
 862                         } else {
 863                             for (i = 0; i < run; i++)
 864                                 *coeff_data++ = coeff;
 865                         }
 866                     }
 867                 } else {
 868                     while (1) {
 869                         UPDATE_CACHE(re, &s->gb);
 870                         GET_RL_VLC(level, run, re, &s->gb, s->table_18_rl_vlc,
 871                                    VLC_BITS, 3, 1);
 872
 873                         /* escape */
 874                         if (level == 255 && run == 2)
 875                             break;
 876
 877                         count += run;
 878
 879                         if (count > expected)
 880                             break;
 881
 882                         if (!lossless)
 883                             coeff = dequant_and_decompand(s, level, s->quantisation, s->codebook);
 884                         else
 885                             coeff = level;
 886                         if (tag == BandSecondPass) {
 887                             const uint16_t q = s->quantisation;
 888
 889                             for (i = 0; i < run; i++) {
 890                                 *coeff_data |= coeff << 8;
 891                                 *coeff_data++ *= q;
 892                             }
 893                         } else {
 894                             for (i = 0; i < run; i++)
 895                                 *coeff_data++ = coeff;
 896                         }
 897                     }
 898                 }
 899                 CLOSE_READER(re, &s->gb);
 900             }
 901
 902             if (count > expected) {
 903                 av_log(avctx, AV_LOG_ERROR, "Escape codeword not found, probably corrupt data\n");
 904                 ret = AVERROR(EINVAL);
 905                 goto end;
 906             }
 907             if (s->peak.level)
 908                 peak_table(coeff_data - count, &s->peak, count);
 909             if (s->difference_coding)
 910                 difference_coding(s->plane[s->channel_num].subband[s->subband_num_actual], highpass_width, highpass_height);
 911
 912             bytes = FFALIGN(AV_CEIL_RSHIFT(get_bits_count(&s->gb), 3), 4);
 913             if (bytes > bytestream2_get_bytes_left(&gb)) {
 914                 av_log(avctx, AV_LOG_ERROR, "Bitstream overread error\n");
 915                 ret = AVERROR(EINVAL);
 916                 goto end;
 917             } else
 918                 bytestream2_seek(&gb, bytes, SEEK_CUR);
 919
 920             av_log(avctx, AV_LOG_DEBUG, "End subband coeffs %i extra %i\n", count, count - expected);
 921 finish:
 922             if (s->subband_num_actual != 255)
 923                 s->codebook = 0;
 924
 925             /* Copy last line of coefficients if odd height */
 926             if (highpass_height & 1) {
 927                 memcpy(&coeff_data[highpass_height * highpass_stride],
 928                        &coeff_data[(highpass_height - 1) * highpass_stride],
 929                        highpass_stride * sizeof(*coeff_data));
 930             }
 931         }
 932     }
 933
 934     s->planes = av_pix_fmt_count_planes(avctx->pix_fmt);
 935     if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16) {
 936         s->progressive = 1;
 937         s->planes = 4;
 938     }
 939
 940     ff_thread_finish_setup(avctx);
 941
 942     if (!s->a_width || !s->a_height || s->a_format == AV_PIX_FMT_NONE ||
 943         s->coded_width || s->coded_height || s->coded_format != AV_PIX_FMT_NONE) {
 944         av_log(avctx, AV_LOG_ERROR, "Invalid dimensions\n");
 945         ret = AVERROR(EINVAL);
 946         goto end;
 947     }
 948
 949     if (!got_buffer) {
 950         av_log(avctx, AV_LOG_ERROR, "No end of header tag found\n");
 951         ret = AVERROR(EINVAL);
 952         goto end;
 953     }
 954
 955     if (s->transform_type == 0 && s->sample_type != 1) {
 956         for (plane = 0; plane < s->planes && !ret; plane++) {
 957             /* level 1 */
 958             int lowpass_height  = s->plane[plane].band[0][0].height;
 959             int lowpass_width   = s->plane[plane].band[0][0].width;
 960             int highpass_stride = s->plane[plane].band[0][1].stride;
 961             int act_plane = plane == 1 ? 2 : plane == 2 ? 1 : plane;
 962             ptrdiff_t dst_linesize;
 963             int16_t *low, *high, *output, *dst;
 964
 965             if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16) {
 966                 act_plane = 0;
 967                 dst_linesize = pic->linesize[act_plane];
 968             } else {
 969                 dst_linesize = pic->linesize[act_plane] / 2;
 970             }
 971
 972             if (lowpass_height > s->plane[plane].band[0][0].a_height || lowpass_width > s->plane[plane].band[0][0].a_width ||
 973                 !highpass_stride || s->plane[plane].band[0][1].width > s->plane[plane].band[0][1].a_width) {
 974                 av_log(avctx, AV_LOG_ERROR, "Invalid plane dimensions\n");
 975                 ret = AVERROR(EINVAL);
 976                 goto end;
 977             }
 978
 979             av_log(avctx, AV_LOG_DEBUG, "Decoding level 1 plane %i %i %i %i\n", plane, lowpass_height, lowpass_width, highpass_stride);
 980
 981             low    = s->plane[plane].subband[0];
 982             high   = s->plane[plane].subband[2];
 983             output = s->plane[plane].l_h[0];
 984             for (i = 0; i < lowpass_width; i++) {
 985                 vert_filter(output, lowpass_width, low, lowpass_width, high, highpass_stride, lowpass_height);
 986                 low++;
 987                 high++;
 988                 output++;
 989             }
 990
 991             low    = s->plane[plane].subband[1];
 992             high   = s->plane[plane].subband[3];
 993             output = s->plane[plane].l_h[1];
 994
 995             for (i = 0; i < lowpass_width; i++) {
 996                 // note the stride of "low" is highpass_stride
 997                 vert_filter(output, lowpass_width, low, highpass_stride, high, highpass_stride, lowpass_height);
 998                 low++;
 999                 high++;
1000                 output++;
1001             }
1002
1003             low    = s->plane[plane].l_h[0];
1004             high   = s->plane[plane].l_h[1];
1005             output = s->plane[plane].subband[0];
1006             for (i = 0; i < lowpass_height * 2; i++) {
1007                 horiz_filter(output, low, high, lowpass_width);
1008                 low    += lowpass_width;
1009                 high   += lowpass_width;
1010                 output += lowpass_width * 2;
1011             }
1012             if (s->bpc == 12) {
1013                 output = s->plane[plane].subband[0];
1014                 for (i = 0; i < lowpass_height * 2; i++) {
1015                     for (j = 0; j < lowpass_width * 2; j++)
1016                         output[j] *= 4;
1017
1018                     output += lowpass_width * 2;
1019                 }
1020             }
1021
1022             /* level 2 */
1023             lowpass_height  = s->plane[plane].band[1][1].height;
1024             lowpass_width   = s->plane[plane].band[1][1].width;
1025             highpass_stride = s->plane[plane].band[1][1].stride;
1026
1027             if (lowpass_height > s->plane[plane].band[1][1].a_height || lowpass_width > s->plane[plane].band[1][1].a_width ||
1028                 !highpass_stride || s->plane[plane].band[1][1].width > s->plane[plane].band[1][1].a_width) {
1029                 av_log(avctx, AV_LOG_ERROR, "Invalid plane dimensions\n");
1030                 ret = AVERROR(EINVAL);
1031                 goto end;
1032             }
1033
1034             av_log(avctx, AV_LOG_DEBUG, "Level 2 plane %i %i %i %i\n", plane, lowpass_height, lowpass_width, highpass_stride);
1035
1036             low    = s->plane[plane].subband[0];
1037             high   = s->plane[plane].subband[5];
1038             output = s->plane[plane].l_h[3];
1039             for (i = 0; i < lowpass_width; i++) {
1040                 vert_filter(output, lowpass_width, low, lowpass_width, high, highpass_stride, lowpass_height);
1041                 low++;
1042                 high++;
1043                 output++;
1044             }
1045
1046             low    = s->plane[plane].subband[4];
1047             high   = s->plane[plane].subband[6];
1048             output = s->plane[plane].l_h[4];
1049             for (i = 0; i < lowpass_width; i++) {
1050                 vert_filter(output, lowpass_width, low, highpass_stride, high, highpass_stride, lowpass_height);
1051                 low++;
1052                 high++;
1053                 output++;
1054             }
1055
1056             low    = s->plane[plane].l_h[3];
1057             high   = s->plane[plane].l_h[4];
1058             output = s->plane[plane].subband[0];
1059             for (i = 0; i < lowpass_height * 2; i++) {
1060                 horiz_filter(output, low, high, lowpass_width);
1061                 low    += lowpass_width;
1062                 high   += lowpass_width;
1063                 output += lowpass_width * 2;
1064             }
1065
1066             output = s->plane[plane].subband[0];
1067             for (i = 0; i < lowpass_height * 2; i++) {
1068                 for (j = 0; j < lowpass_width * 2; j++)
1069                     output[j] *= 4;
1070
1071                 output += lowpass_width * 2;
1072             }
1073
1074             /* level 3 */
1075             lowpass_height  = s->plane[plane].band[2][1].height;
1076             lowpass_width   = s->plane[plane].band[2][1].width;
1077             highpass_stride = s->plane[plane].band[2][1].stride;
1078
1079             if (lowpass_height > s->plane[plane].band[2][1].a_height || lowpass_width > s->plane[plane].band[2][1].a_width ||
1080                 !highpass_stride || s->plane[plane].band[2][1].width > s->plane[plane].band[2][1].a_width) {
1081                 av_log(avctx, AV_LOG_ERROR, "Invalid plane dimensions\n");
1082                 ret = AVERROR(EINVAL);
1083                 goto end;
1084             }
1085
1086             av_log(avctx, AV_LOG_DEBUG, "Level 3 plane %i %i %i %i\n", plane, lowpass_height, lowpass_width, highpass_stride);
1087             if (s->progressive) {
1088                 low    = s->plane[plane].subband[0];
1089                 high   = s->plane[plane].subband[8];
1090                 output = s->plane[plane].l_h[6];
1091                 for (i = 0; i < lowpass_width; i++) {
1092                     vert_filter(output, lowpass_width, low, lowpass_width, high, highpass_stride, lowpass_height);
1093                     low++;
1094                     high++;
1095                     output++;
1096                 }
1097
1098                 low    = s->plane[plane].subband[7];
1099                 high   = s->plane[plane].subband[9];
1100                 output = s->plane[plane].l_h[7];
1101                 for (i = 0; i < lowpass_width; i++) {
1102                     vert_filter(output, lowpass_width, low, highpass_stride, high, highpass_stride, lowpass_height);
1103                     low++;
1104                     high++;
1105                     output++;
1106                 }
1107
1108                 dst = (int16_t *)pic->data[act_plane];
1109                 if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16) {
1110                     if (plane & 1)
1111                         dst++;
1112                     if (plane > 1)
1113                         dst += pic->linesize[act_plane] >> 1;
1114                 }
1115                 low  = s->plane[plane].l_h[6];
1116                 high = s->plane[plane].l_h[7];
1117
1118                 if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16 &&
1119                     (lowpass_height * 2 > avctx->coded_height / 2 ||
1120                      lowpass_width  * 2 > avctx->coded_width  / 2    )
1121                     ) {
1122                     ret = AVERROR_INVALIDDATA;
1123                     goto end;
1124                 }
1125
1126                 for (i = 0; i < lowpass_height * 2; i++) {
1127                     if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16)
1128                         horiz_filter_clip_bayer(dst, low, high, lowpass_width, s->bpc);
1129                     else
1130                         horiz_filter_clip(dst, low, high, lowpass_width, s->bpc);
1131                     if (avctx->pix_fmt == AV_PIX_FMT_GBRAP12 && act_plane == 3)
1132                         process_alpha(dst, lowpass_width * 2);
1133                     low  += lowpass_width;
1134                     high += lowpass_width;
1135                     dst  += dst_linesize;
1136                 }
1137             } else {
1138                 av_log(avctx, AV_LOG_DEBUG, "interlaced frame ? %d", pic->interlaced_frame);
1139                 pic->interlaced_frame = 1;
1140                 low    = s->plane[plane].subband[0];
1141                 high   = s->plane[plane].subband[7];
1142                 output = s->plane[plane].l_h[6];
1143                 for (i = 0; i < lowpass_height; i++) {
1144                     horiz_filter(output, low, high, lowpass_width);
1145                     low    += lowpass_width;
1146                     high   += lowpass_width;
1147                     output += lowpass_width * 2;
1148                 }
1149
1150                 low    = s->plane[plane].subband[8];
1151                 high   = s->plane[plane].subband[9];
1152                 output = s->plane[plane].l_h[7];
1153                 for (i = 0; i < lowpass_height; i++) {
1154                     horiz_filter(output, low, high, lowpass_width);
1155                     low    += lowpass_width;
1156                     high   += lowpass_width;
1157                     output += lowpass_width * 2;
1158                 }
1159
1160                 dst  = (int16_t *)pic->data[act_plane];
1161                 low  = s->plane[plane].l_h[6];
1162                 high = s->plane[plane].l_h[7];
1163                 for (i = 0; i < lowpass_height; i++) {
1164                     interlaced_vertical_filter(dst, low, high, lowpass_width * 2,  pic->linesize[act_plane]/2, act_plane);
1165                     low  += lowpass_width * 2;
1166                     high += lowpass_width * 2;
1167                     dst  += pic->linesize[act_plane];
1168                 }
1169             }
1170         }
1171     } else if (s->transform_type == 2 && (avctx->internal->is_copy || s->frame_index == 1 || s->sample_type != 1)) {
1172         for (plane = 0; plane < s->planes && !ret; plane++) {
1173             int lowpass_height  = s->plane[plane].band[0][0].height;
1174             int lowpass_width   = s->plane[plane].band[0][0].width;
1175             int highpass_stride = s->plane[plane].band[0][1].stride;
1176             int act_plane = plane == 1 ? 2 : plane == 2 ? 1 : plane;
1177             int16_t *low, *high, *output, *dst;
1178             ptrdiff_t dst_linesize;
1179
1180             if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16) {
1181                 act_plane = 0;
1182                 dst_linesize = pic->linesize[act_plane];
1183             } else {
1184                 dst_linesize = pic->linesize[act_plane] / 2;
1185             }
1186
1187             if (lowpass_height > s->plane[plane].band[0][0].a_height || lowpass_width > s->plane[plane].band[0][0].a_width ||
1188                 !highpass_stride || s->plane[plane].band[0][1].width > s->plane[plane].band[0][1].a_width) {
1189                 av_log(avctx, AV_LOG_ERROR, "Invalid plane dimensions\n");
1190                 ret = AVERROR(EINVAL);
1191                 goto end;
1192             }
1193
1194             av_log(avctx, AV_LOG_DEBUG, "Decoding level 1 plane %i %i %i %i\n", plane, lowpass_height, lowpass_width, highpass_stride);
1195
1196             low    = s->plane[plane].subband[0];
1197             high   = s->plane[plane].subband[2];
1198             output = s->plane[plane].l_h[0];
1199             for (i = 0; i < lowpass_width; i++) {
1200                 vert_filter(output, lowpass_width, low, lowpass_width, high, highpass_stride, lowpass_height);
1201                 low++;
1202                 high++;
1203                 output++;
1204             }
1205
1206             low    = s->plane[plane].subband[1];
1207             high   = s->plane[plane].subband[3];
1208             output = s->plane[plane].l_h[1];
1209             for (i = 0; i < lowpass_width; i++) {
1210                 vert_filter(output, lowpass_width, low, highpass_stride, high, highpass_stride, lowpass_height);
1211                 low++;
1212                 high++;
1213                 output++;
1214             }
1215
1216             low    = s->plane[plane].l_h[0];
1217             high   = s->plane[plane].l_h[1];
1218             output = s->plane[plane].l_h[7];
1219             for (i = 0; i < lowpass_height * 2; i++) {
1220                 horiz_filter(output, low, high, lowpass_width);
1221                 low    += lowpass_width;
1222                 high   += lowpass_width;
1223                 output += lowpass_width * 2;
1224             }
1225             if (s->bpc == 12) {
1226                 output = s->plane[plane].l_h[7];
1227                 for (i = 0; i < lowpass_height * 2; i++) {
1228                     for (j = 0; j < lowpass_width * 2; j++)
1229                         output[j] *= 4;
1230
1231                     output += lowpass_width * 2;
1232                 }
1233             }
1234
1235             lowpass_height  = s->plane[plane].band[1][1].height;
1236             lowpass_width   = s->plane[plane].band[1][1].width;
1237             highpass_stride = s->plane[plane].band[1][1].stride;
1238
1239             if (lowpass_height > s->plane[plane].band[1][1].a_height || lowpass_width > s->plane[plane].band[1][1].a_width ||
1240                 !highpass_stride || s->plane[plane].band[1][1].width > s->plane[plane].band[1][1].a_width) {
1241                 av_log(avctx, AV_LOG_ERROR, "Invalid plane dimensions\n");
1242                 ret = AVERROR(EINVAL);
1243                 goto end;
1244             }
1245
1246             av_log(avctx, AV_LOG_DEBUG, "Level 2 lowpass plane %i %i %i %i\n", plane, lowpass_height, lowpass_width, highpass_stride);
1247
1248             low    = s->plane[plane].l_h[7];
1249             high   = s->plane[plane].subband[5];
1250             output = s->plane[plane].l_h[3];
1251             for (i = 0; i < lowpass_width; i++) {
1252                 vert_filter(output, lowpass_width, low, lowpass_width, high, highpass_stride, lowpass_height);
1253                 low++;
1254                 high++;
1255                 output++;
1256             }
1257
1258             low    = s->plane[plane].subband[4];
1259             high   = s->plane[plane].subband[6];
1260             output = s->plane[plane].l_h[4];
1261             for (i = 0; i < lowpass_width; i++) {
1262                 vert_filter(output, lowpass_width, low, highpass_stride, high, highpass_stride, lowpass_height);
1263                 low++;
1264                 high++;
1265                 output++;
1266             }
1267
1268             low    = s->plane[plane].l_h[3];
1269             high   = s->plane[plane].l_h[4];
1270             output = s->plane[plane].l_h[7];
1271             for (i = 0; i < lowpass_height * 2; i++) {
1272                 horiz_filter(output, low, high, lowpass_width);
1273                 low    += lowpass_width;
1274                 high   += lowpass_width;
1275                 output += lowpass_width * 2;
1276             }
1277
1278             output = s->plane[plane].l_h[7];
1279             for (i = 0; i < lowpass_height * 2; i++) {
1280                 for (j = 0; j < lowpass_width * 2; j++)
1281                     output[j] *= 4;
1282                 output += lowpass_width * 2;
1283             }
1284
1285             low    = s->plane[plane].subband[7];
1286             high   = s->plane[plane].subband[9];
1287             output = s->plane[plane].l_h[3];
1288             for (i = 0; i < lowpass_width; i++) {
1289                 vert_filter(output, lowpass_width, low, lowpass_width, high, highpass_stride, lowpass_height);
1290                 low++;
1291                 high++;
1292                 output++;
1293             }
1294
1295             low    = s->plane[plane].subband[8];
1296             high   = s->plane[plane].subband[10];
1297             output = s->plane[plane].l_h[4];
1298             for (i = 0; i < lowpass_width; i++) {
1299                 vert_filter(output, lowpass_width, low, highpass_stride, high, highpass_stride, lowpass_height);
1300                 low++;
1301                 high++;
1302                 output++;
1303             }
1304
1305             low    = s->plane[plane].l_h[3];
1306             high   = s->plane[plane].l_h[4];
1307             output = s->plane[plane].l_h[9];
1308             for (i = 0; i < lowpass_height * 2; i++) {
1309                 horiz_filter(output, low, high, lowpass_width);
1310                 low    += lowpass_width;
1311                 high   += lowpass_width;
1312                 output += lowpass_width * 2;
1313             }
1314
1315             lowpass_height  = s->plane[plane].band[4][1].height;
1316             lowpass_width   = s->plane[plane].band[4][1].width;
1317             highpass_stride = s->plane[plane].band[4][1].stride;
1318             av_log(avctx, AV_LOG_DEBUG, "temporal level %i %i %i %i\n", plane, lowpass_height, lowpass_width, highpass_stride);
1319
1320             if (lowpass_height > s->plane[plane].band[4][1].a_height || lowpass_width > s->plane[plane].band[4][1].a_width ||
1321                 !highpass_stride || s->plane[plane].band[4][1].width > s->plane[plane].band[4][1].a_width) {
1322                 av_log(avctx, AV_LOG_ERROR, "Invalid plane dimensions\n");
1323                 ret = AVERROR(EINVAL);
1324                 goto end;
1325             }
1326
1327             low    = s->plane[plane].l_h[7];
1328             high   = s->plane[plane].l_h[9];
1329             output = s->plane[plane].l_h[7];
1330             for (i = 0; i < lowpass_height; i++) {
1331                 inverse_temporal_filter(output, low, high, lowpass_width);
1332                 low    += lowpass_width;
1333                 high   += lowpass_width;
1334             }
1335             if (s->progressive) {
1336                 low    = s->plane[plane].l_h[7];
1337                 high   = s->plane[plane].subband[15];
1338                 output = s->plane[plane].l_h[6];
1339                 for (i = 0; i < lowpass_width; i++) {
1340                     vert_filter(output, lowpass_width, low, lowpass_width, high, highpass_stride, lowpass_height);
1341                     low++;
1342                     high++;
1343                     output++;
1344                 }
1345
1346                 low    = s->plane[plane].subband[14];
1347                 high   = s->plane[plane].subband[16];
1348                 output = s->plane[plane].l_h[7];
1349                 for (i = 0; i < lowpass_width; i++) {
1350                     vert_filter(output, lowpass_width, low, highpass_stride, high, highpass_stride, lowpass_height);
1351                     low++;
1352                     high++;
1353                     output++;
1354                 }
1355
1356                 low    = s->plane[plane].l_h[9];
1357                 high   = s->plane[plane].subband[12];
1358                 output = s->plane[plane].l_h[8];
1359                 for (i = 0; i < lowpass_width; i++) {
1360                     vert_filter(output, lowpass_width, low, lowpass_width, high, highpass_stride, lowpass_height);
1361                     low++;
1362                     high++;
1363                     output++;
1364                 }
1365
1366                 low    = s->plane[plane].subband[11];
1367                 high   = s->plane[plane].subband[13];
1368                 output = s->plane[plane].l_h[9];
1369                 for (i = 0; i < lowpass_width; i++) {
1370                     vert_filter(output, lowpass_width, low, highpass_stride, high, highpass_stride, lowpass_height);
1371                     low++;
1372                     high++;
1373                     output++;
1374                 }
1375
1376                 if (s->sample_type == 1)
1377                     continue;
1378
1379                 dst = (int16_t *)pic->data[act_plane];
1380                 if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16) {
1381                     if (plane & 1)
1382                         dst++;
1383                     if (plane > 1)
1384                         dst += pic->linesize[act_plane] >> 1;
1385                 }
1386
1387                 if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16 &&
1388                     (lowpass_height * 2 > avctx->coded_height / 2 ||
1389                      lowpass_width  * 2 > avctx->coded_width  / 2    )
1390                     ) {
1391                     ret = AVERROR_INVALIDDATA;
1392                     goto end;
1393                 }
1394
1395                 low  = s->plane[plane].l_h[6];
1396                 high = s->plane[plane].l_h[7];
1397                 for (i = 0; i < lowpass_height * 2; i++) {
1398                     if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16)
1399                         horiz_filter_clip_bayer(dst, low, high, lowpass_width, s->bpc);
1400                     else
1401                         horiz_filter_clip(dst, low, high, lowpass_width, s->bpc);
1402                     low  += lowpass_width;
1403                     high += lowpass_width;
1404                     dst  += dst_linesize;
1405                 }
1406             } else {
1407                 pic->interlaced_frame = 1;
1408                 low    = s->plane[plane].l_h[7];
1409                 high   = s->plane[plane].subband[14];
1410                 output = s->plane[plane].l_h[6];
1411                 for (i = 0; i < lowpass_height; i++) {
1412                     horiz_filter(output, low, high, lowpass_width);
1413                     low    += lowpass_width;
1414                     high   += lowpass_width;
1415                     output += lowpass_width * 2;
1416                 }
1417
1418                 low    = s->plane[plane].subband[15];
1419                 high   = s->plane[plane].subband[16];
1420                 output = s->plane[plane].l_h[7];
1421                 for (i = 0; i < lowpass_height; i++) {
1422                     horiz_filter(output, low, high, lowpass_width);
1423                     low    += lowpass_width;
1424                     high   += lowpass_width;
1425                     output += lowpass_width * 2;
1426                 }
1427
1428                 low    = s->plane[plane].l_h[9];
1429                 high   = s->plane[plane].subband[11];
1430                 output = s->plane[plane].l_h[8];
1431                 for (i = 0; i < lowpass_height; i++) {
1432                     horiz_filter(output, low, high, lowpass_width);
1433                     low    += lowpass_width;
1434                     high   += lowpass_width;
1435                     output += lowpass_width * 2;
1436                 }
1437
1438                 low    = s->plane[plane].subband[12];
1439                 high   = s->plane[plane].subband[13];
1440                 output = s->plane[plane].l_h[9];
1441                 for (i = 0; i < lowpass_height; i++) {
1442                     horiz_filter(output, low, high, lowpass_width);
1443                     low    += lowpass_width;
1444                     high   += lowpass_width;
1445                     output += lowpass_width * 2;
1446                 }
1447
1448                 if (s->sample_type == 1)
1449                     continue;
1450
1451                 dst  = (int16_t *)pic->data[act_plane];
1452                 low  = s->plane[plane].l_h[6];
1453                 high = s->plane[plane].l_h[7];
1454                 for (i = 0; i < lowpass_height; i++) {
1455                     interlaced_vertical_filter(dst, low, high, lowpass_width * 2,  pic->linesize[act_plane]/2, act_plane);
1456                     low  += lowpass_width * 2;
1457                     high += lowpass_width * 2;
1458                     dst  += pic->linesize[act_plane];
1459                 }
1460             }
1461         }
1462     }
1463
1464     if (s->transform_type == 2 && s->sample_type == 1) {
1465         int16_t *low, *high, *dst;
1466         int lowpass_height, lowpass_width, highpass_stride;
1467         ptrdiff_t dst_linesize;
1468
1469         for (plane = 0; plane < s->planes; plane++) {
1470             int act_plane = plane == 1 ? 2 : plane == 2 ? 1 : plane;
1471
1472             if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16) {
1473                 act_plane = 0;
1474                 dst_linesize = pic->linesize[act_plane];
1475             } else {
1476                 dst_linesize = pic->linesize[act_plane] / 2;
1477             }
1478
1479             lowpass_height  = s->plane[plane].band[4][1].height;
1480             lowpass_width   = s->plane[plane].band[4][1].width;
1481             highpass_stride = s->plane[plane].band[4][1].stride;
1482
1483             if (s->progressive) {
1484                 dst = (int16_t *)pic->data[act_plane];
1485                 low  = s->plane[plane].l_h[8];
1486                 high = s->plane[plane].l_h[9];
1487
1488                 if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16) {
1489                     if (plane & 1)
1490                         dst++;
1491                     if (plane > 1)
1492                         dst += pic->linesize[act_plane] >> 1;
1493                 }
1494
1495                 if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16 &&
1496                     (lowpass_height * 2 > avctx->coded_height / 2 ||
1497                      lowpass_width  * 2 > avctx->coded_width  / 2    )
1498                     ) {
1499                     ret = AVERROR_INVALIDDATA;
1500                     goto end;
1501                 }
1502
1503                 for (i = 0; i < lowpass_height * 2; i++) {
1504                     if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16)
1505                         horiz_filter_clip_bayer(dst, low, high, lowpass_width, s->bpc);
1506                     else
1507                         horiz_filter_clip(dst, low, high, lowpass_width, s->bpc);
1508                     low  += lowpass_width;
1509                     high += lowpass_width;
1510                     dst  += dst_linesize;
1511                 }
1512             } else {
1513                 dst  = (int16_t *)pic->data[act_plane];
1514                 low  = s->plane[plane].l_h[8];
1515                 high = s->plane[plane].l_h[9];
1516                 for (i = 0; i < lowpass_height; i++) {
1517                     interlaced_vertical_filter(dst, low, high, lowpass_width * 2,  pic->linesize[act_plane]/2, act_plane);
1518                     low  += lowpass_width * 2;
1519                     high += lowpass_width * 2;
1520                     dst  += pic->linesize[act_plane];
1521                 }
1522             }
1523         }
1524     }
1525
1526     if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16)
1527         process_bayer(pic, s->bpc);
1528 end:
1529     if (ret < 0)
1530         return ret;
1531
1532     *got_frame = 1;
1533     return avpkt->size;
1534 }
1535
1536 static av_cold int cfhd_close(AVCodecContext *avctx)
1537 {
1538     CFHDContext *s = avctx->priv_data;
1539
1540     free_buffers(s);
1541
1542     ff_free_vlc(&s->vlc_9);
1543     ff_free_vlc(&s->vlc_18);
1544
1545     return 0;
1546 }
1547
1548 #if HAVE_THREADS
1549 static int update_thread_context(AVCodecContext *dst, const AVCodecContext *src)
1550 {
1551     CFHDContext *psrc = src->priv_data;
1552     CFHDContext *pdst = dst->priv_data;
1553     int ret;
1554
1555     if (dst == src || psrc->transform_type == 0)
1556         return 0;
1557
1558     pdst->a_format = psrc->a_format;
1559     pdst->a_width  = psrc->a_width;
1560     pdst->a_height = psrc->a_height;
1561     pdst->transform_type = psrc->transform_type;
1562     pdst->progressive = psrc->progressive;
1563     pdst->planes = psrc->planes;
1564
1565     if (!pdst->plane[0].idwt_buf) {
1566         pdst->coded_width  = pdst->a_width;
1567         pdst->coded_height = pdst->a_height;
1568         pdst->coded_format = pdst->a_format;
1569         ret = alloc_buffers(dst);
1570         if (ret < 0)
1571             return ret;
1572     }
1573
1574     for (int plane = 0; plane < pdst->planes; plane++) {
1575         memcpy(pdst->plane[plane].band, psrc->plane[plane].band, sizeof(pdst->plane[plane].band));
1576         memcpy(pdst->plane[plane].idwt_buf, psrc->plane[plane].idwt_buf,
1577                pdst->plane[plane].idwt_size * sizeof(int16_t));
1578     }
1579
1580     return 0;
1581 }
1582 #endif
1583
1584 AVCodec ff_cfhd_decoder = {
1585     .name             = "cfhd",
1586     .long_name        = NULL_IF_CONFIG_SMALL("GoPro CineForm HD"),
1587     .type             = AVMEDIA_TYPE_VIDEO,
1588     .id               = AV_CODEC_ID_CFHD,
1589     .priv_data_size   = sizeof(CFHDContext),
1590     .init             = cfhd_init,
1591     .close            = cfhd_close,
1592     .decode           = cfhd_decode,
1593     .update_thread_context = ONLY_IF_THREADS_ENABLED(update_thread_context),
1594     .capabilities     = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS,
1595     .caps_internal    = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,
1596 };