falkTX
/
FFmpeg
mirror of https://github.com/falkTX/FFmpeg.git
1
0
Fork 0
Code Issues 0 Releases 338 Wiki Activity
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
98733 Commits
32 Branches
857MB
Tree: 9f702fc8f4
Branches Tags
${ item.name }
Create branch ${ searchTerm }
from '9f702fc8f4'
${ noResults }
FFmpeg/libavcodec/cfhd.c

1597 lines
63KB
Raw Blame History 

  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. };