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.
98630 Commits
32 Branches
720MB
Tree: acaed62ad1
Branches Tags
${ item.name }
Create branch ${ searchTerm }
from 'acaed62ad1'
${ noResults }
FFmpeg/libavcodec/cfhd.c

1053 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. static av_cold int cfhd_init(AVCodecContext *avctx)

  44. {

  45.     CFHDContext *s = avctx->priv_data;

  46. 

  47.     s->avctx                   = avctx;

  48. 

  49.     for (int i = 0; i < 64; i++) {

  50.         int val = i;

  51. 

  52.         if (val >= 40) {

  53.             if (val >= 54) {

  54.                 val -= 54;

  55.                 val <<= 2;

  56.                 val += 54;

  57.             }

  58. 

  59.             val -= 40;

  60.             val <<= 2;

  61.             val += 40;

  62.         }

  63. 

  64.         s->lut[0][i] = val;

  65.     }

  66. 

  67.     for (int i = 0; i < 256; i++)

  68.         s->lut[1][i] = i + ((768 * i * i * i) / (256 * 256 * 256));

  69. 

  70.     return ff_cfhd_init_vlcs(s);

  71. }

  72. 

  73. static void init_plane_defaults(CFHDContext *s)

  74. {

  75.     s->subband_num        = 0;

  76.     s->level              = 0;

  77.     s->subband_num_actual = 0;

  78. }

  79. 

  80. static void init_peak_table_defaults(CFHDContext *s)

  81. {

  82.     s->peak.level  = 0;

  83.     s->peak.offset = 0;

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

  85. }

  86. 

  87. static void init_frame_defaults(CFHDContext *s)

  88. {

  89.     s->coded_width       = 0;

  90.     s->coded_height      = 0;

  91.     s->cropped_height    = 0;

  92.     s->bpc               = 10;

  93.     s->channel_cnt       = 4;

  94.     s->subband_cnt       = SUBBAND_COUNT;

  95.     s->channel_num       = 0;

  96.     s->lowpass_precision = 16;

  97.     s->quantisation      = 1;

  98.     s->wavelet_depth     = 3;

  99.     s->pshift            = 1;

  100.     s->codebook          = 0;

  101.     s->difference_coding = 0;

  102.     s->progressive       = 0;

  103.     init_plane_defaults(s);

  104.     init_peak_table_defaults(s);

  105. }

  106. 

  107. static inline int dequant_and_decompand(CFHDContext *s, int level, int quantisation, int codebook)

  108. {

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

  110.         return s->lut[codebook][abs(level)] * FFSIGN(level) * quantisation;

  111.     } else

  112.         return level * quantisation;

  113. }

  114. 

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

  116. {

  117. 

  118.     int i,j;

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

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

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

  122.         }

  123.         band += width;

  124.     }

  125. }

  126. 

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

  128. {

  129.     int i;

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

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

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

  133. }

  134. 

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

  136. {

  137.     int i, channel;

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

  139.         channel   = alpha[i];

  140.         channel  -= ALPHA_COMPAND_DC_OFFSET;

  141.         channel <<= 3;

  142.         channel  *= ALPHA_COMPAND_GAIN;

  143.         channel >>= 16;

  144.         channel   = av_clip_uintp2(channel, 12);

  145.         alpha[i]  = channel;

  146.     }

  147. }

  148. 

  149. static inline void process_bayer(AVFrame *frame)

  150. {

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

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

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

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

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

  156.     const int mid = 2048;

  157. 

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

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

  160.             int R, G1, G2, B;

  161.             int g, rg, bg, gd;

  162. 

  163.             g  = r[x];

  164.             rg = g1[x];

  165.             bg = g2[x];

  166.             gd = b[x];

  167.             gd -= mid;

  168. 

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

  170.             G1 = g + gd;

  171.             G2 = g - gd;

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

  173. 

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

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

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

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

  178. 

  179.             r[x]  = R;

  180.             g1[x] = G1;

  181.             g2[x] = G2;

  182.             b[x]  = B;

  183.         }

  184. 

  185.         r  += linesize;

  186.         g1 += linesize;

  187.         g2 += linesize;

  188.         b  += linesize;

  189.     }

  190. }

  191. 

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

  193.                           int16_t *low, ptrdiff_t low_stride,

  194.                           int16_t *high, ptrdiff_t high_stride,

  195.                           int len, int clip)

  196. {

  197.     int16_t tmp;

  198.     int i;

  199. 

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

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

  202.     if (clip)

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

  204. 

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

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

  207.     if (clip)

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

  209. 

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

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

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

  213.         if (clip)

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

  215. 

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

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

  218.         if (clip)

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

  220.     }

  221. 

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

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

  224.     if (clip)

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

  226. 

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

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

  229.     if (clip)

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

  231. }

  232. 

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

  234.                          int width, int linesize, int plane)

  235. {

  236.     int i;

  237.     int16_t even, odd;

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

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

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

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

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

  243.     }

  244. }

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

  246.                          int width)

  247. {

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

  249. }

  250. 

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

  252.                               int width, int clip)

  253. {

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

  255. }

  256. 

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

  258.                                     int width, int clip)

  259. {

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

  261. }

  262. 

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

  264.                         int16_t *low, ptrdiff_t low_stride,

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

  266. {

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

  268. }

  269. 

  270. static void free_buffers(CFHDContext *s)

  271. {

  272.     int i, j;

  273. 

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

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

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

  277. 

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

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

  280. 

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

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

  283.     }

  284.     s->a_height = 0;

  285.     s->a_width  = 0;

  286. }

  287. 

  288. static int alloc_buffers(AVCodecContext *avctx)

  289. {

  290.     CFHDContext *s = avctx->priv_data;

  291.     int i, j, ret, planes;

  292.     int chroma_x_shift, chroma_y_shift;

  293.     unsigned k;

  294. 

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

  296.         s->coded_width *= 2;

  297.         s->coded_height *= 2;

  298.     }

  299. 

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

  301.         return ret;

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

  303. 

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

  305.                                                 &chroma_x_shift,

  306.                                                 &chroma_y_shift)) < 0)

  307.         return ret;

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

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

  310.         planes = 4;

  311.         chroma_x_shift = 1;

  312.         chroma_y_shift = 1;

  313.     }

  314. 

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

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

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

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

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

  320.         if (chroma_y_shift)

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

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

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

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

  325. 

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

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

  328.         w4 = w8 * 2;

  329.         h4 = h8 * 2;

  330.         w2 = w4 * 2;

  331.         h2 = h4 * 2;

  332. 

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

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

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

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

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

  338.             return AVERROR(ENOMEM);

  339. 

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

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

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

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

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

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

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

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

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

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

  350. 

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

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

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

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

  355.             }

  356.         }

  357. 

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

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

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

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

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

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

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

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

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

  367.     }

  368. 

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

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

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

  372. 

  373.     return 0;

  374. }

  375. 

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

  377.                        AVPacket *avpkt)

  378. {

  379.     CFHDContext *s = avctx->priv_data;

  380.     GetByteContext gb;

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

  382.     AVFrame *pic = data;

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

  384.     int16_t *coeff_data;

  385. 

  386.     s->coded_format = AV_PIX_FMT_YUV422P10;

  387.     init_frame_defaults(s);

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

  389. 

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

  391. 

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

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

  394.         uint16_t tagu   = bytestream2_get_be16(&gb);

  395.         int16_t tag     = (int16_t)tagu;

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

  397.         uint16_t abstag = abs(tag);

  398.         int8_t abs_tag8 = abs(tag8);

  399.         uint16_t data   = bytestream2_get_be16(&gb);

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

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

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

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

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

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

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

  407.             s->coded_width = data;

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

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

  410.             s->coded_height = data;

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

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

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

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

  415.                 ret = AVERROR(EINVAL);

  416.                 break;

  417.             }

  418.             s->bpc = data;

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

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

  421.             s->channel_cnt = data;

  422.             if (data > 4) {

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

  424.                 ret = AVERROR_PATCHWELCOME;

  425.                 break;

  426.             }

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

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

  429.             if (data != SUBBAND_COUNT) {

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

  431.                 ret = AVERROR_PATCHWELCOME;

  432.                 break;

  433.             }

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

  435.             s->channel_num = data;

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

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

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

  439.                 ret = AVERROR(EINVAL);

  440.                 break;

  441.             }

  442.             init_plane_defaults(s);

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

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

  445.                 s->level++;

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

  447.             s->subband_num = data;

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

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

  450.                 ret = AVERROR(EINVAL);

  451.                 break;

  452.             }

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

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

  455.                 ret = AVERROR(EINVAL);

  456.                 break;

  457.             }

  458.         } else if (tag == SubbandBand) {

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

  460.             s->subband_num_actual = data;

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

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

  463.                 ret = AVERROR(EINVAL);

  464.                 break;

  465.             }

  466.         } else if (tag == LowpassPrecision)

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

  468.         else if (tag == Quantization) {

  469.             s->quantisation = data;

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

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

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

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

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

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

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

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

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

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

  480.                 ret = AVERROR(EINVAL);

  481.                 break;

  482.             }

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

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

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

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

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

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

  489.                 ret = AVERROR(EINVAL);

  490.                 break;

  491.             }

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

  493.         } else if (tag == SampleType)

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

  495.         else if (tag == TransformType) {

  496.             if (data != 0) {

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

  498.                 ret = AVERROR_PATCHWELCOME;

  499.                 break;

  500.             }

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

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

  503.             if (abstag == 0x4001)

  504.                 s->peak.level = 0;

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

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

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

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

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

  510.             ret = AVERROR_PATCHWELCOME;

  511.             break;

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

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

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

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

  516.                 ret = AVERROR_INVALIDDATA;

  517.                 break;

  518.             }

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

  520.                 uint16_t tag2 = bytestream2_get_be16(&gb);

  521.                 uint16_t val2 = bytestream2_get_be16(&gb);

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

  523.             }

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

  525.             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);

  526.             if (data < 3) {

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

  528.                 ret = AVERROR(EINVAL);

  529.                 break;

  530.             }

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

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

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

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

  535.             if (data < 3) {

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

  537.                 ret = AVERROR(EINVAL);

  538.                 break;

  539.             }

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

  541.         } else if (tag == BandWidth) {

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

  543.             if (data < 3) {

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

  545.                 ret = AVERROR(EINVAL);

  546.                 break;

  547.             }

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

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

  550.         } else if (tag == BandHeight) {

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

  552.             if (data < 3) {

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

  554.                 ret = AVERROR(EINVAL);

  555.                 break;

  556.             }

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

  558.         } else if (tag == InputFormat) {

  559.             av_log(avctx, AV_LOG_DEBUG, "Input format %i\n", data);

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

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

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

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

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

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

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

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

  568.                 ret = AVERROR(EINVAL);

  569.                 break;

  570.             }

  571.             avctx->bits_per_raw_sample = s->bpc = data;

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

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

  574.             if (data == 1) {

  575.                 s->coded_format = AV_PIX_FMT_YUV422P10;

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

  577.                 s->coded_format = AV_PIX_FMT_BAYER_RGGB16;

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

  579.                 s->coded_format = AV_PIX_FMT_GBRP12;

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

  581.                 s->coded_format = AV_PIX_FMT_GBRAP12;

  582.             } else {

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

  584.                 ret = AVERROR_PATCHWELCOME;

  585.                 break;

  586.             }

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

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

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

  590.             s->cropped_height = data;

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

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

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

  594.             s->peak.base    = gb;

  595.             s->peak.level   = 0;

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

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

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

  599.             s->peak.base    = gb;

  600.             s->peak.level   = 0;

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

  602.             s->peak.level = data;

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

  604.         } else

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

  606. 

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

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

  609.             s->coded_format != AV_PIX_FMT_NONE) {

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

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

  612.                 free_buffers(s);

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

  614.                     free_buffers(s);

  615.                     return ret;

  616.                 }

  617.             }

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

  619.             if (ret < 0)

  620.                 return ret;

  621.             if (s->cropped_height) {

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

  623.                 if (avctx->height < height)

  624.                     return AVERROR_INVALIDDATA;

  625.                 avctx->height = height;

  626.             }

  627.             frame.f->width =

  628.             frame.f->height = 0;

  629. 

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

  631.                 return ret;

  632. 

  633.             s->coded_width = 0;

  634.             s->coded_height = 0;

  635.             s->coded_format = AV_PIX_FMT_NONE;

  636.             got_buffer = 1;

  637.         }

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

  639. 

  640.         /* Lowpass coefficients */

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

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

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

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

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

  646. 

  647.             if (!got_buffer) {

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

  649.                 ret = AVERROR(EINVAL);

  650.                 goto end;

  651.             }

  652. 

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

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

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

  656.                 ret = AVERROR(EINVAL);

  657.                 goto end;

  658.             }

  659. 

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

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

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

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

  664. 

  665.                 coeff_data += lowpass_width;

  666.             }

  667. 

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

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

  670. 

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

  672.             if (lowpass_height & 1) {

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

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

  675.                        lowpass_width * sizeof(*coeff_data));

  676.             }

  677. 

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

  679.         }

  680. 

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

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

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

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

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

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

  687.             int expected;

  688.             int a_expected = highpass_a_height * highpass_a_width;

  689.             int level, run, coeff;

  690.             int count = 0, bytes;

  691. 

  692.             if (!got_buffer) {

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

  694.                 ret = AVERROR(EINVAL);

  695.                 goto end;

  696.             }

  697. 

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

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

  700.                 ret = AVERROR(EINVAL);

  701.                 goto end;

  702.             }

  703.             expected = highpass_height * highpass_stride;

  704. 

  705.             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);

  706. 

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

  708.             {

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

  710.                 if (!s->codebook) {

  711.                     while (1) {

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

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

  714.                                    VLC_BITS, 3, 1);

  715. 

  716.                         /* escape */

  717.                         if (level == 64)

  718.                             break;

  719. 

  720.                         count += run;

  721. 

  722.                         if (count > expected)

  723.                             break;

  724. 

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

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

  727.                             *coeff_data++ = coeff;

  728.                     }

  729.                 } else {

  730.                     while (1) {

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

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

  733.                                    VLC_BITS, 3, 1);

  734. 

  735.                         /* escape */

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

  737.                             break;

  738. 

  739.                         count += run;

  740. 

  741.                         if (count > expected)

  742.                             break;

  743. 

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

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

  746.                             *coeff_data++ = coeff;

  747.                     }

  748.                 }

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

  750.             }

  751. 

  752.             if (count > expected) {

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

  754.                 ret = AVERROR(EINVAL);

  755.                 goto end;

  756.             }

  757.             if (s->peak.level)

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

  759.             if (s->difference_coding)

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

  761. 

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

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

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

  765.                 ret = AVERROR(EINVAL);

  766.                 goto end;

  767.             } else

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

  769. 

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

  771.             s->codebook = 0;

  772. 

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

  774.             if (highpass_height & 1) {

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

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

  777.                        highpass_stride * sizeof(*coeff_data));

  778.             }

  779.         }

  780.     }

  781. 

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

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

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

  785.         ret = AVERROR(EINVAL);

  786.         goto end;

  787.     }

  788. 

  789.     if (!got_buffer) {

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

  791.         ret = AVERROR(EINVAL);

  792.         goto end;

  793.     }

  794. 

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

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

  797.         if (!s->progressive)

  798.             return AVERROR_INVALIDDATA;

  799.         planes = 4;

  800.     }

  801. 

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

  803.         /* level 1 */

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

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

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

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

  808.         ptrdiff_t dst_linesize;

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

  810. 

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

  812.             act_plane = 0;

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

  814.         } else {

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

  816.         }

  817. 

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

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

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

  821.             ret = AVERROR(EINVAL);

  822.             goto end;

  823.         }

  824. 

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

  826. 

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

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

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

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

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

  832.             low++;

  833.             high++;

  834.             output++;

  835.         }

  836. 

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

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

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

  840. 

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

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

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

  844.             low++;

  845.             high++;

  846.             output++;

  847.         }

  848. 

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

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

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

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

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

  854.             low    += lowpass_width;

  855.             high   += lowpass_width;

  856.             output += lowpass_width * 2;

  857.         }

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

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

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

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

  862.                     output[j] *= 4;

  863. 

  864.                 output += lowpass_width * 2;

  865.             }

  866.         }

  867. 

  868.         /* level 2 */

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

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

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

  872. 

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

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

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

  876.             ret = AVERROR(EINVAL);

  877.             goto end;

  878.         }

  879. 

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

  881. 

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

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

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

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

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

  887.             low++;

  888.             high++;

  889.             output++;

  890.         }

  891. 

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

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

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

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

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

  897.             low++;

  898.             high++;

  899.             output++;

  900.         }

  901. 

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

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

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

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

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

  907.             low    += lowpass_width;

  908.             high   += lowpass_width;

  909.             output += lowpass_width * 2;

  910.         }

  911. 

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

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

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

  915.                 output[j] *= 4;

  916. 

  917.             output += lowpass_width * 2;

  918.         }

  919. 

  920.         /* level 3 */

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

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

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

  924. 

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

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

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

  928.             ret = AVERROR(EINVAL);

  929.             goto end;

  930.         }

  931. 

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

  933.         if (s->progressive) {

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

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

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

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

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

  939.                 low++;

  940.                 high++;

  941.                 output++;

  942.             }

  943. 

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

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

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

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

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

  949.                 low++;

  950.                 high++;

  951.                 output++;

  952.             }

  953. 

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

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

  956.                 if (plane & 1)

  957.                     dst++;

  958.                 if (plane > 1)

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

  960.             }

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

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

  963. 

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

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

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

  967.                 ) {

  968.                 ret = AVERROR_INVALIDDATA;

  969.                 goto end;

  970.             }

  971. 

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

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

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

  975.                 else

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

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

  978.                     process_alpha(dst, lowpass_width * 2);

  979.                 low  += lowpass_width;

  980.                 high += lowpass_width;

  981.                 dst  += dst_linesize;

  982.             }

  983.         } else {

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

  985.             pic->interlaced_frame = 1;

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

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

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

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

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

  991.                 low    += lowpass_width;

  992.                 high   += lowpass_width;

  993.                 output += lowpass_width * 2;

  994.             }

  995. 

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

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

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

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

  1000.                 horiz_filter(output, low, high, lowpass_width);

  1001.                 low    += lowpass_width;

  1002.                 high   += lowpass_width;

  1003.                 output += lowpass_width * 2;

  1004.             }

  1005. 

  1006.             dst  = (int16_t *)pic->data[act_plane];

  1007.             low  = s->plane[plane].l_h[6];

  1008.             high = s->plane[plane].l_h[7];

  1009.             for (i = 0; i < lowpass_height; i++) {

  1010.                 interlaced_vertical_filter(dst, low, high, lowpass_width * 2,  pic->linesize[act_plane]/2, act_plane);

  1011.                 low  += lowpass_width * 2;

  1012.                 high += lowpass_width * 2;

  1013.                 dst  += pic->linesize[act_plane];

  1014.             }

  1015.         }

  1016.     }

  1017. 

  1018. 

  1019.     if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16)

  1020.         process_bayer(pic);

  1021. end:

  1022.     if (ret < 0)

  1023.         return ret;

  1024. 

  1025.     *got_frame = 1;

  1026.     return avpkt->size;

  1027. }

  1028. 

  1029. static av_cold int cfhd_close(AVCodecContext *avctx)

  1030. {

  1031.     CFHDContext *s = avctx->priv_data;

  1032. 

  1033.     free_buffers(s);

  1034. 

  1035.     ff_free_vlc(&s->vlc_9);

  1036.     ff_free_vlc(&s->vlc_18);

  1037. 

  1038.     return 0;

  1039. }

  1040. 

  1041. AVCodec ff_cfhd_decoder = {

  1042.     .name             = "cfhd",

  1043.     .long_name        = NULL_IF_CONFIG_SMALL("Cineform HD"),

  1044.     .type             = AVMEDIA_TYPE_VIDEO,

  1045.     .id               = AV_CODEC_ID_CFHD,

  1046.     .priv_data_size   = sizeof(CFHDContext),

  1047.     .init             = cfhd_init,

  1048.     .close            = cfhd_close,

  1049.     .decode           = cfhd_decode,

  1050.     .capabilities     = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS,

  1051.     .caps_internal    = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,

  1052. };