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.
98233 Commits
32 Branches
2.4GB
Tree: 810103bb2f
Branches Tags
${ item.name }
Create branch ${ searchTerm }
from '810103bb2f'
${ noResults }
FFmpeg/libavcodec/cfhd.c

1064 lines
40KB
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. enum CFHDParam {

  44.     ChannelCount     =  12,

  45.     SubbandCount     =  14,

  46.     ImageWidth       =  20,

  47.     ImageHeight      =  21,

  48.     LowpassPrecision =  35,

  49.     SubbandNumber    =  48,

  50.     Quantization     =  53,

  51.     ChannelNumber    =  62,

  52.     SampleFlags      =  68,

  53.     BitsPerComponent = 101,

  54.     ChannelWidth     = 104,

  55.     ChannelHeight    = 105,

  56.     PrescaleShift    = 109,

  57. };

  58. 

  59. 

  60. 

  61. static av_cold int cfhd_init(AVCodecContext *avctx)

  62. {

  63.     CFHDContext *s = avctx->priv_data;

  64. 

  65.     avctx->bits_per_raw_sample = 10;

  66.     s->avctx                   = avctx;

  67. 

  68.     return ff_cfhd_init_vlcs(s);

  69. }

  70. 

  71. static void init_plane_defaults(CFHDContext *s)

  72. {

  73.     s->subband_num        = 0;

  74.     s->level              = 0;

  75.     s->subband_num_actual = 0;

  76. }

  77. 

  78. static void init_peak_table_defaults(CFHDContext *s)

  79. {

  80.     s->peak.level  = 0;

  81.     s->peak.offset = 0;

  82.     memset(&s->peak.base, 0, sizeof(s->peak.base));

  83. }

  84. 

  85. static void init_frame_defaults(CFHDContext *s)

  86. {

  87.     s->coded_width       = 0;

  88.     s->coded_height      = 0;

  89.     s->cropped_height    = 0;

  90.     s->bpc               = 10;

  91.     s->channel_cnt       = 4;

  92.     s->subband_cnt       = SUBBAND_COUNT;

  93.     s->channel_num       = 0;

  94.     s->lowpass_precision = 16;

  95.     s->quantisation      = 1;

  96.     s->wavelet_depth     = 3;

  97.     s->pshift            = 1;

  98.     s->codebook          = 0;

  99.     s->difference_coding = 0;

  100.     s->progressive       = 0;

  101.     init_plane_defaults(s);

  102.     init_peak_table_defaults(s);

  103. }

  104. 

  105. /* TODO: merge with VLC tables or use LUT */

  106. static inline int dequant_and_decompand(int level, int quantisation, int codebook)

  107. {

  108.     if (codebook == 0 || codebook == 1) {

  109.         int64_t abslevel = abs(level);

  110.         if (level < 264)

  111.             return (abslevel + ((768 * abslevel * abslevel * abslevel) / (255 * 255 * 255))) *

  112.                FFSIGN(level) * quantisation;

  113.         else

  114.             return level * quantisation;

  115.     } else

  116.         return level * quantisation;

  117. }

  118. 

  119. static inline void difference_coding(int16_t *band, int width, int height)

  120. {

  121. 

  122.     int i,j;

  123.     for (i = 0; i < height; i++) {

  124.         for (j = 1; j < width; j++) {

  125.           band[j] += band[j-1];

  126.         }

  127.         band += width;

  128.     }

  129. }

  130. 

  131. static inline void peak_table(int16_t *band, Peak *peak, int length)

  132. {

  133.     int i;

  134.     for (i = 0; i < length; i++)

  135.         if (abs(band[i]) > peak->level)

  136.             band[i] = bytestream2_get_le16(&peak->base);

  137. }

  138. 

  139. static inline void process_alpha(int16_t *alpha, int width)

  140. {

  141.     int i, channel;

  142.     for (i = 0; i < width; i++) {

  143.         channel   = alpha[i];

  144.         channel  -= ALPHA_COMPAND_DC_OFFSET;

  145.         channel <<= 3;

  146.         channel  *= ALPHA_COMPAND_GAIN;

  147.         channel >>= 16;

  148.         channel   = av_clip_uintp2(channel, 12);

  149.         alpha[i]  = channel;

  150.     }

  151. }

  152. 

  153. static inline void process_bayer(AVFrame *frame)

  154. {

  155.     const int linesize = frame->linesize[0];

  156.     uint16_t *r = (uint16_t *)frame->data[0];

  157.     uint16_t *g1 = (uint16_t *)(frame->data[0] + 2);

  158.     uint16_t *g2 = (uint16_t *)(frame->data[0] + frame->linesize[0]);

  159.     uint16_t *b = (uint16_t *)(frame->data[0] + frame->linesize[0] + 2);

  160.     const int mid = 2048;

  161. 

  162.     for (int y = 0; y < frame->height >> 1; y++) {

  163.         for (int x = 0; x < frame->width; x += 2) {

  164.             int R, G1, G2, B;

  165.             int g, rg, bg, gd;

  166. 

  167.             g  = r[x];

  168.             rg = g1[x];

  169.             bg = g2[x];

  170.             gd = b[x];

  171.             gd -= mid;

  172. 

  173.             R  = (rg - mid) * 2 + g;

  174.             G1 = g + gd;

  175.             G2 = g - gd;

  176.             B  = (bg - mid) * 2 + g;

  177. 

  178.             R  = av_clip_uintp2(R  * 16, 16);

  179.             G1 = av_clip_uintp2(G1 * 16, 16);

  180.             G2 = av_clip_uintp2(G2 * 16, 16);

  181.             B  = av_clip_uintp2(B  * 16, 16);

  182. 

  183.             r[x]  = R;

  184.             g1[x] = G1;

  185.             g2[x] = G2;

  186.             b[x]  = B;

  187.         }

  188. 

  189.         r  += linesize;

  190.         g1 += linesize;

  191.         g2 += linesize;

  192.         b  += linesize;

  193.     }

  194. }

  195. 

  196. static inline void filter(int16_t *output, ptrdiff_t out_stride,

  197.                           int16_t *low, ptrdiff_t low_stride,

  198.                           int16_t *high, ptrdiff_t high_stride,

  199.                           int len, int clip)

  200. {

  201.     int16_t tmp;

  202.     int i;

  203. 

  204.     for (i = 0; i < len; i++) {

  205.         if (i == 0) {

  206.             tmp = (11*low[0*low_stride] - 4*low[1*low_stride] + low[2*low_stride] + 4) >> 3;

  207.             output[(2*i+0)*out_stride] = (tmp + high[0*high_stride]) >> 1;

  208.             if (clip)

  209.                 output[(2*i+0)*out_stride] = av_clip_uintp2_c(output[(2*i+0)*out_stride], clip);

  210. 

  211.             tmp = ( 5*low[0*low_stride] + 4*low[1*low_stride] - low[2*low_stride] + 4) >> 3;

  212.             output[(2*i+1)*out_stride] = (tmp - high[0*high_stride]) >> 1;

  213.             if (clip)

  214.                 output[(2*i+1)*out_stride] = av_clip_uintp2_c(output[(2*i+1)*out_stride], clip);

  215.         } else if (i == len-1) {

  216.             tmp = ( 5*low[i*low_stride] + 4*low[(i-1)*low_stride] - low[(i-2)*low_stride] + 4) >> 3;

  217.             output[(2*i+0)*out_stride] = (tmp + high[i*high_stride]) >> 1;

  218.             if (clip)

  219.                 output[(2*i+0)*out_stride] = av_clip_uintp2_c(output[(2*i+0)*out_stride], clip);

  220. 

  221.             tmp = (11*low[i*low_stride] - 4*low[(i-1)*low_stride] + low[(i-2)*low_stride] + 4) >> 3;

  222.             output[(2*i+1)*out_stride] = (tmp - high[i*high_stride]) >> 1;

  223.             if (clip)

  224.                 output[(2*i+1)*out_stride] = av_clip_uintp2_c(output[(2*i+1)*out_stride], clip);

  225.         } else {

  226.             tmp = (low[(i-1)*low_stride] - low[(i+1)*low_stride] + 4) >> 3;

  227.             output[(2*i+0)*out_stride] = (tmp + low[i*low_stride] + high[i*high_stride]) >> 1;

  228.             if (clip)

  229.                 output[(2*i+0)*out_stride] = av_clip_uintp2_c(output[(2*i+0)*out_stride], clip);

  230. 

  231.             tmp = (low[(i+1)*low_stride] - low[(i-1)*low_stride] + 4) >> 3;

  232.             output[(2*i+1)*out_stride] = (tmp + low[i*low_stride] - high[i*high_stride]) >> 1;

  233.             if (clip)

  234.                 output[(2*i+1)*out_stride] = av_clip_uintp2_c(output[(2*i+1)*out_stride], clip);

  235.         }

  236.     }

  237. }

  238. 

  239. static inline void interlaced_vertical_filter(int16_t *output, int16_t *low, int16_t *high,

  240.                          int width, int linesize, int plane)

  241. {

  242.     int i;

  243.     int16_t even, odd;

  244.     for (i = 0; i < width; i++) {

  245.         even = (low[i] - high[i])/2;

  246.         odd  = (low[i] + high[i])/2;

  247.         output[i]            = av_clip_uintp2(even, 10);

  248.         output[i + linesize] = av_clip_uintp2(odd, 10);

  249.     }

  250. }

  251. static void horiz_filter(int16_t *output, int16_t *low, int16_t *high,

  252.                          int width)

  253. {

  254.     filter(output, 1, low, 1, high, 1, width, 0);

  255. }

  256. 

  257. static void horiz_filter_clip(int16_t *output, int16_t *low, int16_t *high,

  258.                               int width, int clip)

  259. {

  260.     filter(output, 1, low, 1, high, 1, width, clip);

  261. }

  262. 

  263. static void horiz_filter_clip_bayer(int16_t *output, int16_t *low, int16_t *high,

  264.                                     int width, int clip)

  265. {

  266.     filter(output, 2, low, 1, high, 1, width, clip);

  267. }

  268. 

  269. static void vert_filter(int16_t *output, ptrdiff_t out_stride,

  270.                         int16_t *low, ptrdiff_t low_stride,

  271.                         int16_t *high, ptrdiff_t high_stride, int len)

  272. {

  273.     filter(output, out_stride, low, low_stride, high, high_stride, len, 0);

  274. }

  275. 

  276. static void free_buffers(CFHDContext *s)

  277. {

  278.     int i, j;

  279. 

  280.     for (i = 0; i < FF_ARRAY_ELEMS(s->plane); i++) {

  281.         av_freep(&s->plane[i].idwt_buf);

  282.         av_freep(&s->plane[i].idwt_tmp);

  283. 

  284.         for (j = 0; j < 9; j++)

  285.             s->plane[i].subband[j] = NULL;

  286. 

  287.         for (j = 0; j < 8; j++)

  288.             s->plane[i].l_h[j] = NULL;

  289.     }

  290.     s->a_height = 0;

  291.     s->a_width  = 0;

  292. }

  293. 

  294. static int alloc_buffers(AVCodecContext *avctx)

  295. {

  296.     CFHDContext *s = avctx->priv_data;

  297.     int i, j, ret, planes;

  298.     int chroma_x_shift, chroma_y_shift;

  299.     unsigned k;

  300. 

  301.     if (s->coded_format == AV_PIX_FMT_BAYER_RGGB16) {

  302.         s->coded_width *= 2;

  303.         s->coded_height *= 2;

  304.     }

  305. 

  306.     if ((ret = ff_set_dimensions(avctx, s->coded_width, s->coded_height)) < 0)

  307.         return ret;

  308.     avctx->pix_fmt = s->coded_format;

  309. 

  310.     if ((ret = av_pix_fmt_get_chroma_sub_sample(s->coded_format,

  311.                                                 &chroma_x_shift,

  312.                                                 &chroma_y_shift)) < 0)

  313.         return ret;

  314.     planes = av_pix_fmt_count_planes(s->coded_format);

  315.     if (s->coded_format == AV_PIX_FMT_BAYER_RGGB16) {

  316.         planes = 4;

  317.         chroma_x_shift = 1;

  318.         chroma_y_shift = 1;

  319.     }

  320. 

  321.     for (i = 0; i < planes; i++) {

  322.         int w8, h8, w4, h4, w2, h2;

  323.         int width  = i ? avctx->width  >> chroma_x_shift : avctx->width;

  324.         int height = i ? avctx->height >> chroma_y_shift : avctx->height;

  325.         ptrdiff_t stride = FFALIGN(width  / 8, 8) * 8;

  326.         if (chroma_y_shift)

  327.             height = FFALIGN(height / 8, 2) * 8;

  328.         s->plane[i].width  = width;

  329.         s->plane[i].height = height;

  330.         s->plane[i].stride = stride;

  331. 

  332.         w8 = FFALIGN(s->plane[i].width  / 8, 8);

  333.         h8 = height / 8;

  334.         w4 = w8 * 2;

  335.         h4 = h8 * 2;

  336.         w2 = w4 * 2;

  337.         h2 = h4 * 2;

  338. 

  339.         s->plane[i].idwt_buf =

  340.             av_mallocz_array(height * stride, sizeof(*s->plane[i].idwt_buf));

  341.         s->plane[i].idwt_tmp =

  342.             av_malloc_array(height * stride, sizeof(*s->plane[i].idwt_tmp));

  343.         if (!s->plane[i].idwt_buf || !s->plane[i].idwt_tmp)

  344.             return AVERROR(ENOMEM);

  345. 

  346.         s->plane[i].subband[0] = s->plane[i].idwt_buf;

  347.         s->plane[i].subband[1] = s->plane[i].idwt_buf + 2 * w8 * h8;

  348.         s->plane[i].subband[2] = s->plane[i].idwt_buf + 1 * w8 * h8;

  349.         s->plane[i].subband[3] = s->plane[i].idwt_buf + 3 * w8 * h8;

  350.         s->plane[i].subband[4] = s->plane[i].idwt_buf + 2 * w4 * h4;

  351.         s->plane[i].subband[5] = s->plane[i].idwt_buf + 1 * w4 * h4;

  352.         s->plane[i].subband[6] = s->plane[i].idwt_buf + 3 * w4 * h4;

  353.         s->plane[i].subband[7] = s->plane[i].idwt_buf + 2 * w2 * h2;

  354.         s->plane[i].subband[8] = s->plane[i].idwt_buf + 1 * w2 * h2;

  355.         s->plane[i].subband[9] = s->plane[i].idwt_buf + 3 * w2 * h2;

  356. 

  357.         for (j = 0; j < DWT_LEVELS; j++) {

  358.             for (k = 0; k < FF_ARRAY_ELEMS(s->plane[i].band[j]); k++) {

  359.                 s->plane[i].band[j][k].a_width  = w8 << j;

  360.                 s->plane[i].band[j][k].a_height = h8 << j;

  361.             }

  362.         }

  363. 

  364.         /* ll2 and ll1 commented out because they are done in-place */

  365.         s->plane[i].l_h[0] = s->plane[i].idwt_tmp;

  366.         s->plane[i].l_h[1] = s->plane[i].idwt_tmp + 2 * w8 * h8;

  367.         // s->plane[i].l_h[2] = ll2;

  368.         s->plane[i].l_h[3] = s->plane[i].idwt_tmp;

  369.         s->plane[i].l_h[4] = s->plane[i].idwt_tmp + 2 * w4 * h4;

  370.         // s->plane[i].l_h[5] = ll1;

  371.         s->plane[i].l_h[6] = s->plane[i].idwt_tmp;

  372.         s->plane[i].l_h[7] = s->plane[i].idwt_tmp + 2 * w2 * h2;

  373.     }

  374. 

  375.     s->a_height = s->coded_height;

  376.     s->a_width  = s->coded_width;

  377.     s->a_format = s->coded_format;

  378. 

  379.     return 0;

  380. }

  381. 

  382. static int cfhd_decode(AVCodecContext *avctx, void *data, int *got_frame,

  383.                        AVPacket *avpkt)

  384. {

  385.     CFHDContext *s = avctx->priv_data;

  386.     GetByteContext gb;

  387.     ThreadFrame frame = { .f = data };

  388.     AVFrame *pic = data;

  389.     int ret = 0, i, j, planes, plane, got_buffer = 0;

  390.     int16_t *coeff_data;

  391. 

  392.     s->coded_format = AV_PIX_FMT_YUV422P10;

  393.     init_frame_defaults(s);

  394.     planes = av_pix_fmt_count_planes(s->coded_format);

  395. 

  396.     bytestream2_init(&gb, avpkt->data, avpkt->size);

  397. 

  398.     while (bytestream2_get_bytes_left(&gb) > 4) {

  399.         /* Bit weird but implement the tag parsing as the spec says */

  400.         uint16_t tagu   = bytestream2_get_be16(&gb);

  401.         int16_t tag     = (int16_t)tagu;

  402.         int8_t tag8     = (int8_t)(tagu >> 8);

  403.         uint16_t abstag = abs(tag);

  404.         int8_t abs_tag8 = abs(tag8);

  405.         uint16_t data   = bytestream2_get_be16(&gb);

  406.         if (abs_tag8 >= 0x60 && abs_tag8 <= 0x6f) {

  407.             av_log(avctx, AV_LOG_DEBUG, "large len %x\n", ((tagu & 0xff) << 16) | data);

  408.         } else if (tag == SampleFlags) {

  409.             av_log(avctx, AV_LOG_DEBUG, "Progressive?%"PRIu16"\n", data);

  410.             s->progressive = data & 0x0001;

  411.         } else if (tag == ImageWidth) {

  412.             av_log(avctx, AV_LOG_DEBUG, "Width %"PRIu16"\n", data);

  413.             s->coded_width = data;

  414.         } else if (tag == ImageHeight) {

  415.             av_log(avctx, AV_LOG_DEBUG, "Height %"PRIu16"\n", data);

  416.             s->coded_height = data;

  417.         } else if (tag == 101) {

  418.             av_log(avctx, AV_LOG_DEBUG, "Bits per component: %"PRIu16"\n", data);

  419.             if (data < 1 || data > 31) {

  420.                 av_log(avctx, AV_LOG_ERROR, "Bits per component %d is invalid\n", data);

  421.                 ret = AVERROR(EINVAL);

  422.                 break;

  423.             }

  424.             s->bpc = data;

  425.         } else if (tag == ChannelCount) {

  426.             av_log(avctx, AV_LOG_DEBUG, "Channel Count: %"PRIu16"\n", data);

  427.             s->channel_cnt = data;

  428.             if (data > 4) {

  429.                 av_log(avctx, AV_LOG_ERROR, "Channel Count of %"PRIu16" is unsupported\n", data);

  430.                 ret = AVERROR_PATCHWELCOME;

  431.                 break;

  432.             }

  433.         } else if (tag == SubbandCount) {

  434.             av_log(avctx, AV_LOG_DEBUG, "Subband Count: %"PRIu16"\n", data);

  435.             if (data != SUBBAND_COUNT) {

  436.                 av_log(avctx, AV_LOG_ERROR, "Subband Count of %"PRIu16" is unsupported\n", data);

  437.                 ret = AVERROR_PATCHWELCOME;

  438.                 break;

  439.             }

  440.         } else if (tag == ChannelNumber) {

  441.             s->channel_num = data;

  442.             av_log(avctx, AV_LOG_DEBUG, "Channel number %"PRIu16"\n", data);

  443.             if (s->channel_num >= planes) {

  444.                 av_log(avctx, AV_LOG_ERROR, "Invalid channel number\n");

  445.                 ret = AVERROR(EINVAL);

  446.                 break;

  447.             }

  448.             init_plane_defaults(s);

  449.         } else if (tag == SubbandNumber) {

  450.             if (s->subband_num != 0 && data == 1)  // hack

  451.                 s->level++;

  452.             av_log(avctx, AV_LOG_DEBUG, "Subband number %"PRIu16"\n", data);

  453.             s->subband_num = data;

  454.             if (s->level >= DWT_LEVELS) {

  455.                 av_log(avctx, AV_LOG_ERROR, "Invalid level\n");

  456.                 ret = AVERROR(EINVAL);

  457.                 break;

  458.             }

  459.             if (s->subband_num > 3) {

  460.                 av_log(avctx, AV_LOG_ERROR, "Invalid subband number\n");

  461.                 ret = AVERROR(EINVAL);

  462.                 break;

  463.             }

  464.         } else if (tag == 51) {

  465.             av_log(avctx, AV_LOG_DEBUG, "Subband number actual %"PRIu16"\n", data);

  466.             s->subband_num_actual = data;

  467.             if (s->subband_num_actual >= 10) {

  468.                 av_log(avctx, AV_LOG_ERROR, "Invalid subband number actual\n");

  469.                 ret = AVERROR(EINVAL);

  470.                 break;

  471.             }

  472.         } else if (tag == LowpassPrecision)

  473.             av_log(avctx, AV_LOG_DEBUG, "Lowpass precision bits: %"PRIu16"\n", data);

  474.         else if (tag == Quantization) {

  475.             s->quantisation = data;

  476.             av_log(avctx, AV_LOG_DEBUG, "Quantisation: %"PRIu16"\n", data);

  477.         } else if (tag == PrescaleShift) {

  478.             s->prescale_shift[0] = (data >> 0) & 0x7;

  479.             s->prescale_shift[1] = (data >> 3) & 0x7;

  480.             s->prescale_shift[2] = (data >> 6) & 0x7;

  481.             av_log(avctx, AV_LOG_DEBUG, "Prescale shift (VC-5): %x\n", data);

  482.         } else if (tag == 27) {

  483.             av_log(avctx, AV_LOG_DEBUG, "Lowpass width %"PRIu16"\n", data);

  484.             if (data < 3 || data > s->plane[s->channel_num].band[0][0].a_width) {

  485.                 av_log(avctx, AV_LOG_ERROR, "Invalid lowpass width\n");

  486.                 ret = AVERROR(EINVAL);

  487.                 break;

  488.             }

  489.             s->plane[s->channel_num].band[0][0].width  = data;

  490.             s->plane[s->channel_num].band[0][0].stride = data;

  491.         } else if (tag == 28) {

  492.             av_log(avctx, AV_LOG_DEBUG, "Lowpass height %"PRIu16"\n", data);

  493.             if (data < 3 || data > s->plane[s->channel_num].band[0][0].a_height) {

  494.                 av_log(avctx, AV_LOG_ERROR, "Invalid lowpass height\n");

  495.                 ret = AVERROR(EINVAL);

  496.                 break;

  497.             }

  498.             s->plane[s->channel_num].band[0][0].height = data;

  499.         } else if (tag == 1)

  500.             av_log(avctx, AV_LOG_DEBUG, "Sample type? %"PRIu16"\n", data);

  501.         else if (tag == 10) {

  502.             if (data != 0) {

  503.                 avpriv_report_missing_feature(avctx, "Transform type of %"PRIu16, data);

  504.                 ret = AVERROR_PATCHWELCOME;

  505.                 break;

  506.             } else if (data == 1) {

  507.                 av_log(avctx, AV_LOG_ERROR, "unsupported transform type\n");

  508.                 ret = AVERROR_PATCHWELCOME;

  509.                 break;

  510.             }

  511.             av_log(avctx, AV_LOG_DEBUG, "Transform-type? %"PRIu16"\n", data);

  512.         } else if (abstag >= 0x4000 && abstag <= 0x40ff) {

  513.             if (abstag == 0x4001)

  514.                 s->peak.level = 0;

  515.             av_log(avctx, AV_LOG_DEBUG, "Small chunk length %d %s\n", data * 4, tag < 0 ? "optional" : "required");

  516.             bytestream2_skipu(&gb, data * 4);

  517.         } else if (tag == 23) {

  518.             av_log(avctx, AV_LOG_DEBUG, "Skip frame\n");

  519.             avpriv_report_missing_feature(avctx, "Skip frame");

  520.             ret = AVERROR_PATCHWELCOME;

  521.             break;

  522.         } else if (tag == 2) {

  523.             av_log(avctx, AV_LOG_DEBUG, "tag=2 header - skipping %i tag/value pairs\n", data);

  524.             if (data > bytestream2_get_bytes_left(&gb) / 4) {

  525.                 av_log(avctx, AV_LOG_ERROR, "too many tag/value pairs (%d)\n", data);

  526.                 ret = AVERROR_INVALIDDATA;

  527.                 break;

  528.             }

  529.             for (i = 0; i < data; i++) {

  530.                 uint16_t tag2 = bytestream2_get_be16(&gb);

  531.                 uint16_t val2 = bytestream2_get_be16(&gb);

  532.                 av_log(avctx, AV_LOG_DEBUG, "Tag/Value = %x %x\n", tag2, val2);

  533.             }

  534.         } else if (tag == 41) {

  535.             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);

  536.             if (data < 3) {

  537.                 av_log(avctx, AV_LOG_ERROR, "Invalid highpass width\n");

  538.                 ret = AVERROR(EINVAL);

  539.                 break;

  540.             }

  541.             s->plane[s->channel_num].band[s->level][s->subband_num].width  = data;

  542.             s->plane[s->channel_num].band[s->level][s->subband_num].stride = FFALIGN(data, 8);

  543.         } else if (tag == 42) {

  544.             av_log(avctx, AV_LOG_DEBUG, "Highpass height %i\n", data);

  545.             if (data < 3) {

  546.                 av_log(avctx, AV_LOG_ERROR, "Invalid highpass height\n");

  547.                 ret = AVERROR(EINVAL);

  548.                 break;

  549.             }

  550.             s->plane[s->channel_num].band[s->level][s->subband_num].height = data;

  551.         } else if (tag == 49) {

  552.             av_log(avctx, AV_LOG_DEBUG, "Highpass width2 %i\n", data);

  553.             if (data < 3) {

  554.                 av_log(avctx, AV_LOG_ERROR, "Invalid highpass width2\n");

  555.                 ret = AVERROR(EINVAL);

  556.                 break;

  557.             }

  558.             s->plane[s->channel_num].band[s->level][s->subband_num].width  = data;

  559.             s->plane[s->channel_num].band[s->level][s->subband_num].stride = FFALIGN(data, 8);

  560.         } else if (tag == 50) {

  561.             av_log(avctx, AV_LOG_DEBUG, "Highpass height2 %i\n", data);

  562.             if (data < 3) {

  563.                 av_log(avctx, AV_LOG_ERROR, "Invalid highpass height2\n");

  564.                 ret = AVERROR(EINVAL);

  565.                 break;

  566.             }

  567.             s->plane[s->channel_num].band[s->level][s->subband_num].height = data;

  568.         } else if (tag == 71) {

  569.             s->codebook = data;

  570.             av_log(avctx, AV_LOG_DEBUG, "Codebook %i\n", s->codebook);

  571.         } else if (tag == 72) {

  572.             s->codebook = data & 0xf;

  573.             s->difference_coding = (data >> 4) & 1;

  574.             av_log(avctx, AV_LOG_DEBUG, "Other codebook? %i\n", s->codebook);

  575.         } else if (tag == 70) {

  576.             av_log(avctx, AV_LOG_DEBUG, "Subsampling or bit-depth flag? %i\n", data);

  577.             if (!(data == 10 || data == 12)) {

  578.                 av_log(avctx, AV_LOG_ERROR, "Invalid bits per channel\n");

  579.                 ret = AVERROR(EINVAL);

  580.                 break;

  581.             }

  582.             s->bpc = data;

  583.         } else if (tag == 84) {

  584.             av_log(avctx, AV_LOG_DEBUG, "Sample format? %i\n", data);

  585.             if (data == 1) {

  586.                 s->coded_format = AV_PIX_FMT_YUV422P10;

  587.             } else if (data == 2) {

  588.                 s->coded_format = AV_PIX_FMT_BAYER_RGGB16;

  589.             } else if (data == 3) {

  590.                 s->coded_format = AV_PIX_FMT_GBRP12;

  591.             } else if (data == 4) {

  592.                 s->coded_format = AV_PIX_FMT_GBRAP12;

  593.             } else {

  594.                 avpriv_report_missing_feature(avctx, "Sample format of %"PRIu16, data);

  595.                 ret = AVERROR_PATCHWELCOME;

  596.                 break;

  597.             }

  598.             planes = data == 2 ? 4 : av_pix_fmt_count_planes(s->coded_format);

  599.         } else if (tag == -85) {

  600.             av_log(avctx, AV_LOG_DEBUG, "Cropped height %"PRIu16"\n", data);

  601.             s->cropped_height = data;

  602.         } else if (tag == -75) {

  603.             s->peak.offset &= ~0xffff;

  604.             s->peak.offset |= (data & 0xffff);

  605.             s->peak.base    = gb;

  606.             s->peak.level   = 0;

  607.         } else if (tag == -76) {

  608.             s->peak.offset &= 0xffff;

  609.             s->peak.offset |= (data & 0xffffU)<<16;

  610.             s->peak.base    = gb;

  611.             s->peak.level   = 0;

  612.         } else if (tag == -74 && s->peak.offset) {

  613.             s->peak.level = data;

  614.             bytestream2_seek(&s->peak.base, s->peak.offset - 4, SEEK_CUR);

  615.         } else

  616.             av_log(avctx, AV_LOG_DEBUG,  "Unknown tag %i data %x\n", tag, data);

  617. 

  618.         /* Some kind of end of header tag */

  619.         if (tag == 4 && data == 0x1a4a && s->coded_width && s->coded_height &&

  620.             s->coded_format != AV_PIX_FMT_NONE) {

  621.             if (s->a_width != s->coded_width || s->a_height != s->coded_height ||

  622.                 s->a_format != s->coded_format) {

  623.                 free_buffers(s);

  624.                 if ((ret = alloc_buffers(avctx)) < 0) {

  625.                     free_buffers(s);

  626.                     return ret;

  627.                 }

  628.             }

  629.             ret = ff_set_dimensions(avctx, s->coded_width, s->coded_height);

  630.             if (ret < 0)

  631.                 return ret;

  632.             if (s->cropped_height) {

  633.                 unsigned height = s->cropped_height << (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16);

  634.                 if (avctx->height < height)

  635.                     return AVERROR_INVALIDDATA;

  636.                 avctx->height = height;

  637.             }

  638.             frame.f->width =

  639.             frame.f->height = 0;

  640. 

  641.             if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0)

  642.                 return ret;

  643. 

  644.             s->coded_width = 0;

  645.             s->coded_height = 0;

  646.             s->coded_format = AV_PIX_FMT_NONE;

  647.             got_buffer = 1;

  648.         }

  649.         coeff_data = s->plane[s->channel_num].subband[s->subband_num_actual];

  650. 

  651.         /* Lowpass coefficients */

  652.         if (tag == 4 && data == 0xf0f && s->a_width && s->a_height) {

  653.             int lowpass_height = s->plane[s->channel_num].band[0][0].height;

  654.             int lowpass_width  = s->plane[s->channel_num].band[0][0].width;

  655.             int lowpass_a_height = s->plane[s->channel_num].band[0][0].a_height;

  656.             int lowpass_a_width  = s->plane[s->channel_num].band[0][0].a_width;

  657. 

  658.             if (!got_buffer) {

  659.                 av_log(avctx, AV_LOG_ERROR, "No end of header tag found\n");

  660.                 ret = AVERROR(EINVAL);

  661.                 goto end;

  662.             }

  663. 

  664.             if (lowpass_height > lowpass_a_height || lowpass_width > lowpass_a_width ||

  665.                 lowpass_a_width * lowpass_a_height * sizeof(int16_t) > bytestream2_get_bytes_left(&gb)) {

  666.                 av_log(avctx, AV_LOG_ERROR, "Too many lowpass coefficients\n");

  667.                 ret = AVERROR(EINVAL);

  668.                 goto end;

  669.             }

  670. 

  671.             av_log(avctx, AV_LOG_DEBUG, "Start of lowpass coeffs component %d height:%d, width:%d\n", s->channel_num, lowpass_height, lowpass_width);

  672.             for (i = 0; i < lowpass_height; i++) {

  673.                 for (j = 0; j < lowpass_width; j++)

  674.                     coeff_data[j] = bytestream2_get_be16u(&gb);

  675. 

  676.                 coeff_data += lowpass_width;

  677.             }

  678. 

  679.             /* Align to mod-4 position to continue reading tags */

  680.             bytestream2_seek(&gb, bytestream2_tell(&gb) & 3, SEEK_CUR);

  681. 

  682.             /* Copy last line of coefficients if odd height */

  683.             if (lowpass_height & 1) {

  684.                 memcpy(&coeff_data[lowpass_height * lowpass_width],

  685.                        &coeff_data[(lowpass_height - 1) * lowpass_width],

  686.                        lowpass_width * sizeof(*coeff_data));

  687.             }

  688. 

  689.             av_log(avctx, AV_LOG_DEBUG, "Lowpass coefficients %d\n", lowpass_width * lowpass_height);

  690.         }

  691. 

  692.         if (tag == 55 && s->subband_num_actual != 255 && s->a_width && s->a_height) {

  693.             int highpass_height = s->plane[s->channel_num].band[s->level][s->subband_num].height;

  694.             int highpass_width  = s->plane[s->channel_num].band[s->level][s->subband_num].width;

  695.             int highpass_a_width = s->plane[s->channel_num].band[s->level][s->subband_num].a_width;

  696.             int highpass_a_height = s->plane[s->channel_num].band[s->level][s->subband_num].a_height;

  697.             int highpass_stride = s->plane[s->channel_num].band[s->level][s->subband_num].stride;

  698.             int expected;

  699.             int a_expected = highpass_a_height * highpass_a_width;

  700.             int level, run, coeff;

  701.             int count = 0, bytes;

  702. 

  703.             if (!got_buffer) {

  704.                 av_log(avctx, AV_LOG_ERROR, "No end of header tag found\n");

  705.                 ret = AVERROR(EINVAL);

  706.                 goto end;

  707.             }

  708. 

  709.             if (highpass_height > highpass_a_height || highpass_width > highpass_a_width || a_expected < highpass_height * (uint64_t)highpass_stride) {

  710.                 av_log(avctx, AV_LOG_ERROR, "Too many highpass coefficients\n");

  711.                 ret = AVERROR(EINVAL);

  712.                 goto end;

  713.             }

  714.             expected = highpass_height * highpass_stride;

  715. 

  716.             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);

  717. 

  718.             init_get_bits(&s->gb, gb.buffer, bytestream2_get_bytes_left(&gb) * 8);

  719.             {

  720.                 OPEN_READER(re, &s->gb);

  721.                 if (!s->codebook) {

  722.                     while (1) {

  723.                         UPDATE_CACHE(re, &s->gb);

  724.                         GET_RL_VLC(level, run, re, &s->gb, s->table_9_rl_vlc,

  725.                                    VLC_BITS, 3, 1);

  726. 

  727.                         /* escape */

  728.                         if (level == 64)

  729.                             break;

  730. 

  731.                         count += run;

  732. 

  733.                         if (count > expected)

  734.                             break;

  735. 

  736.                         coeff = dequant_and_decompand(level, s->quantisation, 0);

  737.                         for (i = 0; i < run; i++)

  738.                             *coeff_data++ = coeff;

  739.                     }

  740.                 } else {

  741.                     while (1) {

  742.                         UPDATE_CACHE(re, &s->gb);

  743.                         GET_RL_VLC(level, run, re, &s->gb, s->table_18_rl_vlc,

  744.                                    VLC_BITS, 3, 1);

  745. 

  746.                         /* escape */

  747.                         if (level == 255 && run == 2)

  748.                             break;

  749. 

  750.                         count += run;

  751. 

  752.                         if (count > expected)

  753.                             break;

  754. 

  755.                         coeff = dequant_and_decompand(level, s->quantisation, s->codebook);

  756.                         for (i = 0; i < run; i++)

  757.                             *coeff_data++ = coeff;

  758.                     }

  759.                 }

  760.                 CLOSE_READER(re, &s->gb);

  761.             }

  762. 

  763.             if (count > expected) {

  764.                 av_log(avctx, AV_LOG_ERROR, "Escape codeword not found, probably corrupt data\n");

  765.                 ret = AVERROR(EINVAL);

  766.                 goto end;

  767.             }

  768.             if (s->peak.level)

  769.                 peak_table(coeff_data - count, &s->peak, count);

  770.             if (s->difference_coding)

  771.                 difference_coding(s->plane[s->channel_num].subband[s->subband_num_actual], highpass_width, highpass_height);

  772. 

  773.             bytes = FFALIGN(AV_CEIL_RSHIFT(get_bits_count(&s->gb), 3), 4);

  774.             if (bytes > bytestream2_get_bytes_left(&gb)) {

  775.                 av_log(avctx, AV_LOG_ERROR, "Bitstream overread error\n");

  776.                 ret = AVERROR(EINVAL);

  777.                 goto end;

  778.             } else

  779.                 bytestream2_seek(&gb, bytes, SEEK_CUR);

  780. 

  781.             av_log(avctx, AV_LOG_DEBUG, "End subband coeffs %i extra %i\n", count, count - expected);

  782.             s->codebook = 0;

  783. 

  784.             /* Copy last line of coefficients if odd height */

  785.             if (highpass_height & 1) {

  786.                 memcpy(&coeff_data[highpass_height * highpass_stride],

  787.                        &coeff_data[(highpass_height - 1) * highpass_stride],

  788.                        highpass_stride * sizeof(*coeff_data));

  789.             }

  790.         }

  791.     }

  792. 

  793.     if (!s->a_width || !s->a_height || s->a_format == AV_PIX_FMT_NONE ||

  794.         s->coded_width || s->coded_height || s->coded_format != AV_PIX_FMT_NONE) {

  795.         av_log(avctx, AV_LOG_ERROR, "Invalid dimensions\n");

  796.         ret = AVERROR(EINVAL);

  797.         goto end;

  798.     }

  799. 

  800.     if (!got_buffer) {

  801.         av_log(avctx, AV_LOG_ERROR, "No end of header tag found\n");

  802.         ret = AVERROR(EINVAL);

  803.         goto end;

  804.     }

  805. 

  806.     planes = av_pix_fmt_count_planes(avctx->pix_fmt);

  807.     if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16) {

  808.         if (!s->progressive)

  809.             return AVERROR_INVALIDDATA;

  810.         planes = 4;

  811.     }

  812. 

  813.     for (plane = 0; plane < planes && !ret; plane++) {

  814.         /* level 1 */

  815.         int lowpass_height  = s->plane[plane].band[0][0].height;

  816.         int lowpass_width   = s->plane[plane].band[0][0].width;

  817.         int highpass_stride = s->plane[plane].band[0][1].stride;

  818.         int act_plane = plane == 1 ? 2 : plane == 2 ? 1 : plane;

  819.         ptrdiff_t dst_linesize;

  820.         int16_t *low, *high, *output, *dst;

  821. 

  822.         if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16) {

  823.             act_plane = 0;

  824.             dst_linesize = pic->linesize[act_plane];

  825.         } else {

  826.             dst_linesize = pic->linesize[act_plane] / 2;

  827.         }

  828. 

  829.         if (lowpass_height > s->plane[plane].band[0][0].a_height || lowpass_width > s->plane[plane].band[0][0].a_width ||

  830.             !highpass_stride || s->plane[plane].band[0][1].width > s->plane[plane].band[0][1].a_width) {

  831.             av_log(avctx, AV_LOG_ERROR, "Invalid plane dimensions\n");

  832.             ret = AVERROR(EINVAL);

  833.             goto end;

  834.         }

  835. 

  836.         av_log(avctx, AV_LOG_DEBUG, "Decoding level 1 plane %i %i %i %i\n", plane, lowpass_height, lowpass_width, highpass_stride);

  837. 

  838.         low    = s->plane[plane].subband[0];

  839.         high   = s->plane[plane].subband[2];

  840.         output = s->plane[plane].l_h[0];

  841.         for (i = 0; i < lowpass_width; i++) {

  842.             vert_filter(output, lowpass_width, low, lowpass_width, high, highpass_stride, lowpass_height);

  843.             low++;

  844.             high++;

  845.             output++;

  846.         }

  847. 

  848.         low    = s->plane[plane].subband[1];

  849.         high   = s->plane[plane].subband[3];

  850.         output = s->plane[plane].l_h[1];

  851. 

  852.         for (i = 0; i < lowpass_width; i++) {

  853.             // note the stride of "low" is highpass_stride

  854.             vert_filter(output, lowpass_width, low, highpass_stride, high, highpass_stride, lowpass_height);

  855.             low++;

  856.             high++;

  857.             output++;

  858.         }

  859. 

  860.         low    = s->plane[plane].l_h[0];

  861.         high   = s->plane[plane].l_h[1];

  862.         output = s->plane[plane].subband[0];

  863.         for (i = 0; i < lowpass_height * 2; i++) {

  864.             horiz_filter(output, low, high, lowpass_width);

  865.             low    += lowpass_width;

  866.             high   += lowpass_width;

  867.             output += lowpass_width * 2;

  868.         }

  869.         if (s->bpc == 12) {

  870.             output = s->plane[plane].subband[0];

  871.             for (i = 0; i < lowpass_height * 2; i++) {

  872.                 for (j = 0; j < lowpass_width * 2; j++)

  873.                     output[j] *= 4;

  874. 

  875.                 output += lowpass_width * 2;

  876.             }

  877.         }

  878. 

  879.         /* level 2 */

  880.         lowpass_height  = s->plane[plane].band[1][1].height;

  881.         lowpass_width   = s->plane[plane].band[1][1].width;

  882.         highpass_stride = s->plane[plane].band[1][1].stride;

  883. 

  884.         if (lowpass_height > s->plane[plane].band[1][1].a_height || lowpass_width > s->plane[plane].band[1][1].a_width ||

  885.             !highpass_stride || s->plane[plane].band[1][1].width > s->plane[plane].band[1][1].a_width) {

  886.             av_log(avctx, AV_LOG_ERROR, "Invalid plane dimensions\n");

  887.             ret = AVERROR(EINVAL);

  888.             goto end;

  889.         }

  890. 

  891.         av_log(avctx, AV_LOG_DEBUG, "Level 2 plane %i %i %i %i\n", plane, lowpass_height, lowpass_width, highpass_stride);

  892. 

  893.         low    = s->plane[plane].subband[0];

  894.         high   = s->plane[plane].subband[5];

  895.         output = s->plane[plane].l_h[3];

  896.         for (i = 0; i < lowpass_width; i++) {

  897.             vert_filter(output, lowpass_width, low, lowpass_width, high, highpass_stride, lowpass_height);

  898.             low++;

  899.             high++;

  900.             output++;

  901.         }

  902. 

  903.         low    = s->plane[plane].subband[4];

  904.         high   = s->plane[plane].subband[6];

  905.         output = s->plane[plane].l_h[4];

  906.         for (i = 0; i < lowpass_width; i++) {

  907.             vert_filter(output, lowpass_width, low, highpass_stride, high, highpass_stride, lowpass_height);

  908.             low++;

  909.             high++;

  910.             output++;

  911.         }

  912. 

  913.         low    = s->plane[plane].l_h[3];

  914.         high   = s->plane[plane].l_h[4];

  915.         output = s->plane[plane].subband[0];

  916.         for (i = 0; i < lowpass_height * 2; i++) {

  917.             horiz_filter(output, low, high, lowpass_width);

  918.             low    += lowpass_width;

  919.             high   += lowpass_width;

  920.             output += lowpass_width * 2;

  921.         }

  922. 

  923.         output = s->plane[plane].subband[0];

  924.         for (i = 0; i < lowpass_height * 2; i++) {

  925.             for (j = 0; j < lowpass_width * 2; j++)

  926.                 output[j] *= 4;

  927. 

  928.             output += lowpass_width * 2;

  929.         }

  930. 

  931.         /* level 3 */

  932.         lowpass_height  = s->plane[plane].band[2][1].height;

  933.         lowpass_width   = s->plane[plane].band[2][1].width;

  934.         highpass_stride = s->plane[plane].band[2][1].stride;

  935. 

  936.         if (lowpass_height > s->plane[plane].band[2][1].a_height || lowpass_width > s->plane[plane].band[2][1].a_width ||

  937.             !highpass_stride || s->plane[plane].band[2][1].width > s->plane[plane].band[2][1].a_width) {

  938.             av_log(avctx, AV_LOG_ERROR, "Invalid plane dimensions\n");

  939.             ret = AVERROR(EINVAL);

  940.             goto end;

  941.         }

  942. 

  943.         av_log(avctx, AV_LOG_DEBUG, "Level 3 plane %i %i %i %i\n", plane, lowpass_height, lowpass_width, highpass_stride);

  944.         if (s->progressive) {

  945.             low    = s->plane[plane].subband[0];

  946.             high   = s->plane[plane].subband[8];

  947.             output = s->plane[plane].l_h[6];

  948.             for (i = 0; i < lowpass_width; i++) {

  949.                 vert_filter(output, lowpass_width, low, lowpass_width, high, highpass_stride, lowpass_height);

  950.                 low++;

  951.                 high++;

  952.                 output++;

  953.             }

  954. 

  955.             low    = s->plane[plane].subband[7];

  956.             high   = s->plane[plane].subband[9];

  957.             output = s->plane[plane].l_h[7];

  958.             for (i = 0; i < lowpass_width; i++) {

  959.                 vert_filter(output, lowpass_width, low, highpass_stride, high, highpass_stride, lowpass_height);

  960.                 low++;

  961.                 high++;

  962.                 output++;

  963.             }

  964. 

  965.             dst = (int16_t *)pic->data[act_plane];

  966.             if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16) {

  967.                 if (plane & 1)

  968.                     dst++;

  969.                 if (plane > 1)

  970.                     dst += pic->linesize[act_plane] >> 1;

  971.             }

  972.             low  = s->plane[plane].l_h[6];

  973.             high = s->plane[plane].l_h[7];

  974. 

  975.             if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16 &&

  976.                 (lowpass_height * 2 > avctx->coded_height / 2 ||

  977.                  lowpass_width  * 2 > avctx->coded_width  / 2    )

  978.                 ) {

  979.                 ret = AVERROR_INVALIDDATA;

  980.                 goto end;

  981.             }

  982. 

  983.             for (i = 0; i < lowpass_height * 2; i++) {

  984.                 if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16)

  985.                     horiz_filter_clip_bayer(dst, low, high, lowpass_width, s->bpc);

  986.                 else

  987.                     horiz_filter_clip(dst, low, high, lowpass_width, s->bpc);

  988.                 if (avctx->pix_fmt == AV_PIX_FMT_GBRAP12 && act_plane == 3)

  989.                     process_alpha(dst, lowpass_width * 2);

  990.                 low  += lowpass_width;

  991.                 high += lowpass_width;

  992.                 dst  += dst_linesize;

  993.             }

  994.         } else {

  995.             av_log(avctx, AV_LOG_DEBUG, "interlaced frame ? %d", pic->interlaced_frame);

  996.             pic->interlaced_frame = 1;

  997.             low    = s->plane[plane].subband[0];

  998.             high   = s->plane[plane].subband[7];

  999.             output = s->plane[plane].l_h[6];

  1000.             for (i = 0; i < lowpass_height; i++) {

  1001.                 horiz_filter(output, low, high, lowpass_width);

  1002.                 low    += lowpass_width;

  1003.                 high   += lowpass_width;

  1004.                 output += lowpass_width * 2;

  1005.             }

  1006. 

  1007.             low    = s->plane[plane].subband[8];

  1008.             high   = s->plane[plane].subband[9];

  1009.             output = s->plane[plane].l_h[7];

  1010.             for (i = 0; i < lowpass_height; i++) {

  1011.                 horiz_filter(output, low, high, lowpass_width);

  1012.                 low    += lowpass_width;

  1013.                 high   += lowpass_width;

  1014.                 output += lowpass_width * 2;

  1015.             }

  1016. 

  1017.             dst  = (int16_t *)pic->data[act_plane];

  1018.             low  = s->plane[plane].l_h[6];

  1019.             high = s->plane[plane].l_h[7];

  1020.             for (i = 0; i < lowpass_height; i++) {

  1021.                 interlaced_vertical_filter(dst, low, high, lowpass_width * 2,  pic->linesize[act_plane]/2, act_plane);

  1022.                 low  += lowpass_width * 2;

  1023.                 high += lowpass_width * 2;

  1024.                 dst  += pic->linesize[act_plane];

  1025.             }

  1026.         }

  1027.     }

  1028. 

  1029. 

  1030.     if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16)

  1031.         process_bayer(pic);

  1032. end:

  1033.     if (ret < 0)

  1034.         return ret;

  1035. 

  1036.     *got_frame = 1;

  1037.     return avpkt->size;

  1038. }

  1039. 

  1040. static av_cold int cfhd_close(AVCodecContext *avctx)

  1041. {

  1042.     CFHDContext *s = avctx->priv_data;

  1043. 

  1044.     free_buffers(s);

  1045. 

  1046.     ff_free_vlc(&s->vlc_9);

  1047.     ff_free_vlc(&s->vlc_18);

  1048. 

  1049.     return 0;

  1050. }

  1051. 

  1052. AVCodec ff_cfhd_decoder = {

  1053.     .name             = "cfhd",

  1054.     .long_name        = NULL_IF_CONFIG_SMALL("Cineform HD"),

  1055.     .type             = AVMEDIA_TYPE_VIDEO,

  1056.     .id               = AV_CODEC_ID_CFHD,

  1057.     .priv_data_size   = sizeof(CFHDContext),

  1058.     .init             = cfhd_init,

  1059.     .close            = cfhd_close,

  1060.     .decode           = cfhd_decode,

  1061.     .capabilities     = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS,

  1062.     .caps_internal    = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,

  1063. };