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FFmpeg/libavcodec/cfhd.c

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  1. /*

  2.  * Copyright (c) 2015-2016 Kieran Kunhya <kieran@kunhya.com>

  3.  *

  4.  * This file is part of FFmpeg.

  5.  *

  6.  * FFmpeg is free software; you can redistribute it and/or

  7.  * modify it under the terms of the GNU Lesser General Public

  8.  * License as published by the Free Software Foundation; either

  9.  * version 2.1 of the License, or (at your option) any later version.

  10.  *

  11.  * FFmpeg is distributed in the hope that it will be useful,

  12.  * but WITHOUT ANY WARRANTY; without even the implied warranty of

  13.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

  14.  * Lesser General Public License for more details.

  15.  *

  16.  * You should have received a copy of the GNU Lesser General Public

  17.  * License along with FFmpeg; if not, write to the Free Software

  18.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

  19.  */

  20. 

  21. /**

  22.  * @file

  23.  * Cineform HD video decoder

  24.  */

  25. 

  26. #include "libavutil/attributes.h"

  27. #include "libavutil/buffer.h"

  28. #include "libavutil/common.h"

  29. #include "libavutil/imgutils.h"

  30. #include "libavutil/intreadwrite.h"

  31. #include "libavutil/opt.h"

  32. 

  33. #include "avcodec.h"

  34. #include "bytestream.h"

  35. #include "get_bits.h"

  36. #include "internal.h"

  37. #include "thread.h"

  38. #include "cfhd.h"

  39. 

  40. #define ALPHA_COMPAND_DC_OFFSET 256

  41. #define ALPHA_COMPAND_GAIN 9400

  42. 

  43. enum CFHDParam {

  44.     SampleType       =   1,

  45.     SampleIndexTable =   2,

  46.     BitstreamMarker  =   4,

  47.     TransformType    =  10,

  48.     ChannelCount     =  12,

  49.     SubbandCount     =  14,

  50.     ImageWidth       =  20,

  51.     ImageHeight      =  21,

  52.     LowpassWidth     =  27,

  53.     LowpassHeight    =  28,

  54.     LowpassPrecision =  35,

  55.     HighpassWidth    =  41,

  56.     HighpassHeight   =  42,

  57.     SubbandNumber    =  48,

  58.     Quantization     =  53,

  59.     BandHeader       =  55,

  60.     ChannelNumber    =  62,

  61.     SampleFlags      =  68,

  62.     EncodedFormat    =  84,

  63.     BitsPerComponent = 101,

  64.     ChannelWidth     = 104,

  65.     ChannelHeight    = 105,

  66.     PrescaleShift    = 109,

  67. };

  68. 

  69. 

  70. 

  71. static av_cold int cfhd_init(AVCodecContext *avctx)

  72. {

  73.     CFHDContext *s = avctx->priv_data;

  74. 

  75.     avctx->bits_per_raw_sample = 10;

  76.     s->avctx                   = avctx;

  77. 

  78.     return ff_cfhd_init_vlcs(s);

  79. }

  80. 

  81. static void init_plane_defaults(CFHDContext *s)

  82. {

  83.     s->subband_num        = 0;

  84.     s->level              = 0;

  85.     s->subband_num_actual = 0;

  86. }

  87. 

  88. static void init_peak_table_defaults(CFHDContext *s)

  89. {

  90.     s->peak.level  = 0;

  91.     s->peak.offset = 0;

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

  93. }

  94. 

  95. static void init_frame_defaults(CFHDContext *s)

  96. {

  97.     s->coded_width       = 0;

  98.     s->coded_height      = 0;

  99.     s->cropped_height    = 0;

  100.     s->bpc               = 10;

  101.     s->channel_cnt       = 4;

  102.     s->subband_cnt       = SUBBAND_COUNT;

  103.     s->channel_num       = 0;

  104.     s->lowpass_precision = 16;

  105.     s->quantisation      = 1;

  106.     s->wavelet_depth     = 3;

  107.     s->pshift            = 1;

  108.     s->codebook          = 0;

  109.     s->difference_coding = 0;

  110.     s->progressive       = 0;

  111.     init_plane_defaults(s);

  112.     init_peak_table_defaults(s);

  113. }

  114. 

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

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

  117. {

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

  119.         int64_t abslevel = abs(level);

  120.         if (abslevel < 256)

  121.             return (abslevel + ((768 * abslevel * abslevel * abslevel) / (256 * 256 * 256))) *

  122.                FFSIGN(level) * quantisation;

  123.         else

  124.             return level * quantisation;

  125.     } else

  126.         return level * quantisation;

  127. }

  128. 

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

  130. {

  131. 

  132.     int i,j;

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

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

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

  136.         }

  137.         band += width;

  138.     }

  139. }

  140. 

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

  142. {

  143.     int i;

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

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

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

  147. }

  148. 

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

  150. {

  151.     int i, channel;

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

  153.         channel   = alpha[i];

  154.         channel  -= ALPHA_COMPAND_DC_OFFSET;

  155.         channel <<= 3;

  156.         channel  *= ALPHA_COMPAND_GAIN;

  157.         channel >>= 16;

  158.         channel   = av_clip_uintp2(channel, 12);

  159.         alpha[i]  = channel;

  160.     }

  161. }

  162. 

  163. static inline void process_bayer(AVFrame *frame)

  164. {

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

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

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

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

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

  170.     const int mid = 2048;

  171. 

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

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

  174.             int R, G1, G2, B;

  175.             int g, rg, bg, gd;

  176. 

  177.             g  = r[x];

  178.             rg = g1[x];

  179.             bg = g2[x];

  180.             gd = b[x];

  181.             gd -= mid;

  182. 

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

  184.             G1 = g + gd;

  185.             G2 = g - gd;

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

  187. 

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

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

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

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

  192. 

  193.             r[x]  = R;

  194.             g1[x] = G1;

  195.             g2[x] = G2;

  196.             b[x]  = B;

  197.         }

  198. 

  199.         r  += linesize;

  200.         g1 += linesize;

  201.         g2 += linesize;

  202.         b  += linesize;

  203.     }

  204. }

  205. 

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

  207.                           int16_t *low, ptrdiff_t low_stride,

  208.                           int16_t *high, ptrdiff_t high_stride,

  209.                           int len, int clip)

  210. {

  211.     int16_t tmp;

  212.     int i;

  213. 

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

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

  216.     if (clip)

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

  218. 

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

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

  221.     if (clip)

  222.         output[(2*0+1)*out_stride] = av_clip_uintp2_c(output[(2*0+1)*out_stride], clip);

  223. 

  224.     for (i = 1; i < len - 1; i++) {

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

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

  227.         if (clip)

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

  229. 

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

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

  232.         if (clip)

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

  234.     }

  235. 

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

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

  238.     if (clip)

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

  240. 

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

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

  243.     if (clip)

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

  245. }

  246. 

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

  248.                          int width, int linesize, int plane)

  249. {

  250.     int i;

  251.     int16_t even, odd;

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

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

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

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

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

  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. 

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

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

  294. 

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

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

  297.     }

  298.     s->a_height = 0;

  299.     s->a_width  = 0;

  300. }

  301. 

  302. static int alloc_buffers(AVCodecContext *avctx)

  303. {

  304.     CFHDContext *s = avctx->priv_data;

  305.     int i, j, ret, planes;

  306.     int chroma_x_shift, chroma_y_shift;

  307.     unsigned k;

  308. 

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

  310.         s->coded_width *= 2;

  311.         s->coded_height *= 2;

  312.     }

  313. 

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

  315.         return ret;

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

  317. 

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

  319.                                                 &chroma_x_shift,

  320.                                                 &chroma_y_shift)) < 0)

  321.         return ret;

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

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

  324.         planes = 4;

  325.         chroma_x_shift = 1;

  326.         chroma_y_shift = 1;

  327.     }

  328. 

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

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

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

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

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

  334.         if (chroma_y_shift)

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

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

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

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

  339. 

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

  341.         h8 = FFALIGN(height, 8) / 8;

  342.         w4 = w8 * 2;

  343.         h4 = h8 * 2;

  344.         w2 = w4 * 2;

  345.         h2 = h4 * 2;

  346. 

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

  348.             av_mallocz_array(FFALIGN(height, 8) * stride, sizeof(*s->plane[i].idwt_buf));

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

  350.             av_malloc_array(FFALIGN(height, 8) * stride, sizeof(*s->plane[i].idwt_tmp));

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

  352.             return AVERROR(ENOMEM);

  353. 

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

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

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

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

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

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

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

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

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

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

  364. 

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

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

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

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

  369.             }

  370.         }

  371. 

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

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

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

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

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

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

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

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

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

  381.     }

  382. 

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

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

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

  386. 

  387.     return 0;

  388. }

  389. 

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

  391.                        AVPacket *avpkt)

  392. {

  393.     CFHDContext *s = avctx->priv_data;

  394.     GetByteContext gb;

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

  396.     AVFrame *pic = data;

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

  398.     int16_t *coeff_data;

  399. 

  400.     s->coded_format = AV_PIX_FMT_YUV422P10;

  401.     init_frame_defaults(s);

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

  403. 

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

  405. 

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

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

  408.         uint16_t tagu   = bytestream2_get_be16(&gb);

  409.         int16_t tag     = (int16_t)tagu;

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

  411.         uint16_t abstag = abs(tag);

  412.         int8_t abs_tag8 = abs(tag8);

  413.         uint16_t data   = bytestream2_get_be16(&gb);

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

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

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

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

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

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

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

  421.             s->coded_width = data;

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

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

  424.             s->coded_height = data;

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

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

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

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

  429.                 ret = AVERROR(EINVAL);

  430.                 break;

  431.             }

  432.             s->bpc = data;

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

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

  435.             s->channel_cnt = data;

  436.             if (data > 4) {

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

  438.                 ret = AVERROR_PATCHWELCOME;

  439.                 break;

  440.             }

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

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

  443.             if (data != SUBBAND_COUNT) {

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

  445.                 ret = AVERROR_PATCHWELCOME;

  446.                 break;

  447.             }

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

  449.             s->channel_num = data;

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

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

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

  453.                 ret = AVERROR(EINVAL);

  454.                 break;

  455.             }

  456.             init_plane_defaults(s);

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

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

  459.                 s->level++;

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

  461.             s->subband_num = data;

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

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

  464.                 ret = AVERROR(EINVAL);

  465.                 break;

  466.             }

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

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

  469.                 ret = AVERROR(EINVAL);

  470.                 break;

  471.             }

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

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

  474.             s->subband_num_actual = data;

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

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

  477.                 ret = AVERROR(EINVAL);

  478.                 break;

  479.             }

  480.         } else if (tag == LowpassPrecision)

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

  482.         else if (tag == Quantization) {

  483.             s->quantisation = data;

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

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

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

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

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

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

  490.         } else if (tag == LowpassWidth) {

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

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

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

  494.                 ret = AVERROR(EINVAL);

  495.                 break;

  496.             }

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

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

  499.         } else if (tag == LowpassHeight) {

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

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

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

  503.                 ret = AVERROR(EINVAL);

  504.                 break;

  505.             }

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

  507.         } else if (tag == SampleType)

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

  509.         else if (tag == TransformType) {

  510.             if (data != 0) {

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

  512.                 ret = AVERROR_PATCHWELCOME;

  513.                 break;

  514.             }

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

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

  517.             if (abstag == 0x4001)

  518.                 s->peak.level = 0;

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

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

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

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

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

  524.             ret = AVERROR_PATCHWELCOME;

  525.             break;

  526.         } else if (tag == SampleIndexTable) {

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

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

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

  530.                 ret = AVERROR_INVALIDDATA;

  531.                 break;

  532.             }

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

  534.                 uint16_t tag2 = bytestream2_get_be16(&gb);

  535.                 uint16_t val2 = bytestream2_get_be16(&gb);

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

  537.             }

  538.         } else if (tag == HighpassWidth) {

  539.             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);

  540.             if (data < 3) {

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

  542.                 ret = AVERROR(EINVAL);

  543.                 break;

  544.             }

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

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

  547.         } else if (tag == HighpassHeight) {

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

  549.             if (data < 3) {

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

  551.                 ret = AVERROR(EINVAL);

  552.                 break;

  553.             }

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

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

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

  557.             if (data < 3) {

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

  559.                 ret = AVERROR(EINVAL);

  560.                 break;

  561.             }

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

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

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

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

  566.             if (data < 3) {

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

  568.                 ret = AVERROR(EINVAL);

  569.                 break;

  570.             }

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

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

  573.             s->codebook = data;

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

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

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

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

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

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

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

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

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

  583.                 ret = AVERROR(EINVAL);

  584.                 break;

  585.             }

  586.             s->bpc = data;

  587.         } else if (tag == EncodedFormat) {

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

  589.             if (data == 1) {

  590.                 s->coded_format = AV_PIX_FMT_YUV422P10;

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

  592.                 s->coded_format = AV_PIX_FMT_BAYER_RGGB16;

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

  594.                 s->coded_format = AV_PIX_FMT_GBRP12;

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

  596.                 s->coded_format = AV_PIX_FMT_GBRAP12;

  597.             } else {

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

  599.                 ret = AVERROR_PATCHWELCOME;

  600.                 break;

  601.             }

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

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

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

  605.             s->cropped_height = data;

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

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

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

  609.             s->peak.base    = gb;

  610.             s->peak.level   = 0;

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

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

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

  614.             s->peak.base    = gb;

  615.             s->peak.level   = 0;

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

  617.             s->peak.level = data;

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

  619.         } else

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

  621. 

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

  623.         if (tag == BitstreamMarker && data == 0x1a4a && s->coded_width && s->coded_height &&

  624.             s->coded_format != AV_PIX_FMT_NONE) {

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

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

  627.                 free_buffers(s);

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

  629.                     free_buffers(s);

  630.                     return ret;

  631.                 }

  632.             }

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

  634.             if (ret < 0)

  635.                 return ret;

  636.             if (s->cropped_height) {

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

  638.                 if (avctx->height < height)

  639.                     return AVERROR_INVALIDDATA;

  640.                 avctx->height = height;

  641.             }

  642.             frame.f->width =

  643.             frame.f->height = 0;

  644. 

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

  646.                 return ret;

  647. 

  648.             s->coded_width = 0;

  649.             s->coded_height = 0;

  650.             s->coded_format = AV_PIX_FMT_NONE;

  651.             got_buffer = 1;

  652.         }

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

  654. 

  655.         /* Lowpass coefficients */

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

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

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

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

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

  661. 

  662.             if (!got_buffer) {

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

  664.                 ret = AVERROR(EINVAL);

  665.                 goto end;

  666.             }

  667. 

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

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

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

  671.                 ret = AVERROR(EINVAL);

  672.                 goto end;

  673.             }

  674. 

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

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

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

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

  679. 

  680.                 coeff_data += lowpass_width;

  681.             }

  682. 

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

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

  685. 

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

  687.             if (lowpass_height & 1) {

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

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

  690.                        lowpass_width * sizeof(*coeff_data));

  691.             }

  692. 

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

  694.         }

  695. 

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

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

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

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

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

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

  702.             int expected;

  703.             int a_expected = highpass_a_height * highpass_a_width;

  704.             int level, run, coeff;

  705.             int count = 0, bytes;

  706. 

  707.             if (!got_buffer) {

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

  709.                 ret = AVERROR(EINVAL);

  710.                 goto end;

  711.             }

  712. 

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

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

  715.                 ret = AVERROR(EINVAL);

  716.                 goto end;

  717.             }

  718.             expected = highpass_height * highpass_stride;

  719. 

  720.             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);

  721. 

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

  723.             {

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

  725.                 if (!s->codebook) {

  726.                     while (1) {

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

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

  729.                                    VLC_BITS, 3, 1);

  730. 

  731.                         /* escape */

  732.                         if (level == 64)

  733.                             break;

  734. 

  735.                         count += run;

  736. 

  737.                         if (count > expected)

  738.                             break;

  739. 

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

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

  742.                             *coeff_data++ = coeff;

  743.                     }

  744.                 } else {

  745.                     while (1) {

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

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

  748.                                    VLC_BITS, 3, 1);

  749. 

  750.                         /* escape */

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

  752.                             break;

  753. 

  754.                         count += run;

  755. 

  756.                         if (count > expected)

  757.                             break;

  758. 

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

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

  761.                             *coeff_data++ = coeff;

  762.                     }

  763.                 }

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

  765.             }

  766. 

  767.             if (count > expected) {

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

  769.                 ret = AVERROR(EINVAL);

  770.                 goto end;

  771.             }

  772.             if (s->peak.level)

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

  774.             if (s->difference_coding)

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

  776. 

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

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

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

  780.                 ret = AVERROR(EINVAL);

  781.                 goto end;

  782.             } else

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

  784. 

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

  786.             s->codebook = 0;

  787. 

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

  789.             if (highpass_height & 1) {

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

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

  792.                        highpass_stride * sizeof(*coeff_data));

  793.             }

  794.         }

  795.     }

  796. 

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

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

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

  800.         ret = AVERROR(EINVAL);

  801.         goto end;

  802.     }

  803. 

  804.     if (!got_buffer) {

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

  806.         ret = AVERROR(EINVAL);

  807.         goto end;

  808.     }

  809. 

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

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

  812.         if (!s->progressive)

  813.             return AVERROR_INVALIDDATA;

  814.         planes = 4;

  815.     }

  816. 

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

  818.         /* level 1 */

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

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

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

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

  823.         ptrdiff_t dst_linesize;

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

  825. 

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

  827.             act_plane = 0;

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

  829.         } else {

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

  831.         }

  832. 

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

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

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

  836.             ret = AVERROR(EINVAL);

  837.             goto end;

  838.         }

  839. 

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

  841. 

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

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

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

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

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

  847.             low++;

  848.             high++;

  849.             output++;

  850.         }

  851. 

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

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

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

  855. 

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

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

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

  859.             low++;

  860.             high++;

  861.             output++;

  862.         }

  863. 

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

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

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

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

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

  869.             low    += lowpass_width;

  870.             high   += lowpass_width;

  871.             output += lowpass_width * 2;

  872.         }

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

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

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

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

  877.                     output[j] *= 4;

  878. 

  879.                 output += lowpass_width * 2;

  880.             }

  881.         }

  882. 

  883.         /* level 2 */

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

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

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

  887. 

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

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

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

  891.             ret = AVERROR(EINVAL);

  892.             goto end;

  893.         }

  894. 

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

  896. 

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

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

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

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

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

  902.             low++;

  903.             high++;

  904.             output++;

  905.         }

  906. 

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

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

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

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

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

  912.             low++;

  913.             high++;

  914.             output++;

  915.         }

  916. 

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

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

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

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

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

  922.             low    += lowpass_width;

  923.             high   += lowpass_width;

  924.             output += lowpass_width * 2;

  925.         }

  926. 

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

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

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

  930.                 output[j] *= 4;

  931. 

  932.             output += lowpass_width * 2;

  933.         }

  934. 

  935.         /* level 3 */

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

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

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

  939. 

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

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

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

  943.             ret = AVERROR(EINVAL);

  944.             goto end;

  945.         }

  946. 

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

  948.         if (s->progressive) {

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

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

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

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

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

  954.                 low++;

  955.                 high++;

  956.                 output++;

  957.             }

  958. 

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

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

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

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

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

  964.                 low++;

  965.                 high++;

  966.                 output++;

  967.             }

  968. 

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

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

  971.                 if (plane & 1)

  972.                     dst++;

  973.                 if (plane > 1)

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

  975.             }

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

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

  978. 

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

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

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

  982.                 ) {

  983.                 ret = AVERROR_INVALIDDATA;

  984.                 goto end;

  985.             }

  986. 

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

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

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

  990.                 else

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

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

  993.                     process_alpha(dst, lowpass_width * 2);

  994.                 low  += lowpass_width;

  995.                 high += lowpass_width;

  996.                 dst  += dst_linesize;

  997.             }

  998.         } else {

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

  1000.             pic->interlaced_frame = 1;

  1001.             low    = s->plane[plane].subband[0];

  1002.             high   = s->plane[plane].subband[7];

  1003.             output = s->plane[plane].l_h[6];

  1004.             for (i = 0; i < lowpass_height; i++) {

  1005.                 horiz_filter(output, low, high, lowpass_width);

  1006.                 low    += lowpass_width;

  1007.                 high   += lowpass_width;

  1008.                 output += lowpass_width * 2;

  1009.             }

  1010. 

  1011.             low    = s->plane[plane].subband[8];

  1012.             high   = s->plane[plane].subband[9];

  1013.             output = s->plane[plane].l_h[7];

  1014.             for (i = 0; i < lowpass_height; i++) {

  1015.                 horiz_filter(output, low, high, lowpass_width);

  1016.                 low    += lowpass_width;

  1017.                 high   += lowpass_width;

  1018.                 output += lowpass_width * 2;

  1019.             }

  1020. 

  1021.             dst  = (int16_t *)pic->data[act_plane];

  1022.             low  = s->plane[plane].l_h[6];

  1023.             high = s->plane[plane].l_h[7];

  1024.             for (i = 0; i < lowpass_height; i++) {

  1025.                 interlaced_vertical_filter(dst, low, high, lowpass_width * 2,  pic->linesize[act_plane]/2, act_plane);

  1026.                 low  += lowpass_width * 2;

  1027.                 high += lowpass_width * 2;

  1028.                 dst  += pic->linesize[act_plane];

  1029.             }

  1030.         }

  1031.     }

  1032. 

  1033. 

  1034.     if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16)

  1035.         process_bayer(pic);

  1036. end:

  1037.     if (ret < 0)

  1038.         return ret;

  1039. 

  1040.     *got_frame = 1;

  1041.     return avpkt->size;

  1042. }

  1043. 

  1044. static av_cold int cfhd_close(AVCodecContext *avctx)

  1045. {

  1046.     CFHDContext *s = avctx->priv_data;

  1047. 

  1048.     free_buffers(s);

  1049. 

  1050.     ff_free_vlc(&s->vlc_9);

  1051.     ff_free_vlc(&s->vlc_18);

  1052. 

  1053.     return 0;

  1054. }

  1055. 

  1056. AVCodec ff_cfhd_decoder = {

  1057.     .name             = "cfhd",

  1058.     .long_name        = NULL_IF_CONFIG_SMALL("Cineform HD"),

  1059.     .type             = AVMEDIA_TYPE_VIDEO,

  1060.     .id               = AV_CODEC_ID_CFHD,

  1061.     .priv_data_size   = sizeof(CFHDContext),

  1062.     .init             = cfhd_init,

  1063.     .close            = cfhd_close,

  1064.     .decode           = cfhd_decode,

  1065.     .capabilities     = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS,

  1066.     .caps_internal    = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,

  1067. };