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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. static av_cold int cfhd_init(AVCodecContext *avctx)

  44. {

  45.     CFHDContext *s = avctx->priv_data;

  46. 

  47.     avctx->bits_per_raw_sample = 10;

  48.     s->avctx                   = avctx;

  49. 

  50.     return ff_cfhd_init_vlcs(s);

  51. }

  52. 

  53. static void init_plane_defaults(CFHDContext *s)

  54. {

  55.     s->subband_num        = 0;

  56.     s->level              = 0;

  57.     s->subband_num_actual = 0;

  58. }

  59. 

  60. static void init_peak_table_defaults(CFHDContext *s)

  61. {

  62.     s->peak.level  = 0;

  63.     s->peak.offset = 0;

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

  65. }

  66. 

  67. static void init_frame_defaults(CFHDContext *s)

  68. {

  69.     s->coded_width       = 0;

  70.     s->coded_height      = 0;

  71.     s->cropped_height    = 0;

  72.     s->bpc               = 10;

  73.     s->channel_cnt       = 4;

  74.     s->subband_cnt       = SUBBAND_COUNT;

  75.     s->channel_num       = 0;

  76.     s->lowpass_precision = 16;

  77.     s->quantisation      = 1;

  78.     s->wavelet_depth     = 3;

  79.     s->pshift            = 1;

  80.     s->codebook          = 0;

  81.     s->difference_coding = 0;

  82.     s->progressive       = 0;

  83.     init_plane_defaults(s);

  84.     init_peak_table_defaults(s);

  85. }

  86. 

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

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

  89. {

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

  91.         int64_t abslevel = abs(level);

  92.         if (abslevel < 256)

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

  94.                FFSIGN(level) * quantisation;

  95.         else

  96.             return level * quantisation;

  97.     } else

  98.         return level * quantisation;

  99. }

  100. 

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

  102. {

  103. 

  104.     int i,j;

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

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

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

  108.         }

  109.         band += width;

  110.     }

  111. }

  112. 

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

  114. {

  115.     int i;

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

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

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

  119. }

  120. 

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

  122. {

  123.     int i, channel;

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

  125.         channel   = alpha[i];

  126.         channel  -= ALPHA_COMPAND_DC_OFFSET;

  127.         channel <<= 3;

  128.         channel  *= ALPHA_COMPAND_GAIN;

  129.         channel >>= 16;

  130.         channel   = av_clip_uintp2(channel, 12);

  131.         alpha[i]  = channel;

  132.     }

  133. }

  134. 

  135. static inline void process_bayer(AVFrame *frame)

  136. {

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

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

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

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

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

  142.     const int mid = 2048;

  143. 

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

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

  146.             int R, G1, G2, B;

  147.             int g, rg, bg, gd;

  148. 

  149.             g  = r[x];

  150.             rg = g1[x];

  151.             bg = g2[x];

  152.             gd = b[x];

  153.             gd -= mid;

  154. 

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

  156.             G1 = g + gd;

  157.             G2 = g - gd;

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

  159. 

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

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

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

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

  164. 

  165.             r[x]  = R;

  166.             g1[x] = G1;

  167.             g2[x] = G2;

  168.             b[x]  = B;

  169.         }

  170. 

  171.         r  += linesize;

  172.         g1 += linesize;

  173.         g2 += linesize;

  174.         b  += linesize;

  175.     }

  176. }

  177. 

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

  179.                           int16_t *low, ptrdiff_t low_stride,

  180.                           int16_t *high, ptrdiff_t high_stride,

  181.                           int len, int clip)

  182. {

  183.     int16_t tmp;

  184.     int i;

  185. 

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

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

  188.     if (clip)

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

  190. 

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

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

  193.     if (clip)

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

  195. 

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

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

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

  199.         if (clip)

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

  201. 

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

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

  204.         if (clip)

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

  206.     }

  207. 

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

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

  210.     if (clip)

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

  212. 

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

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

  215.     if (clip)

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

  217. }

  218. 

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

  220.                          int width, int linesize, int plane)

  221. {

  222.     int i;

  223.     int16_t even, odd;

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

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

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

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

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

  229.     }

  230. }

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

  232.                          int width)

  233. {

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

  235. }

  236. 

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

  238.                               int width, int clip)

  239. {

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

  241. }

  242. 

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

  244.                                     int width, int clip)

  245. {

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

  247. }

  248. 

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

  250.                         int16_t *low, ptrdiff_t low_stride,

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

  252. {

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

  254. }

  255. 

  256. static void free_buffers(CFHDContext *s)

  257. {

  258.     int i, j;

  259. 

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

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

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

  263. 

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

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

  266. 

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

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

  269.     }

  270.     s->a_height = 0;

  271.     s->a_width  = 0;

  272. }

  273. 

  274. static int alloc_buffers(AVCodecContext *avctx)

  275. {

  276.     CFHDContext *s = avctx->priv_data;

  277.     int i, j, ret, planes;

  278.     int chroma_x_shift, chroma_y_shift;

  279.     unsigned k;

  280. 

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

  282.         s->coded_width *= 2;

  283.         s->coded_height *= 2;

  284.     }

  285. 

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

  287.         return ret;

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

  289. 

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

  291.                                                 &chroma_x_shift,

  292.                                                 &chroma_y_shift)) < 0)

  293.         return ret;

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

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

  296.         planes = 4;

  297.         chroma_x_shift = 1;

  298.         chroma_y_shift = 1;

  299.     }

  300. 

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

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

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

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

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

  306.         if (chroma_y_shift)

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

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

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

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

  311. 

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

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

  314.         w4 = w8 * 2;

  315.         h4 = h8 * 2;

  316.         w2 = w4 * 2;

  317.         h2 = h4 * 2;

  318. 

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

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

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

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

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

  324.             return AVERROR(ENOMEM);

  325. 

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

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

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

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

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

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

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

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

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

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

  336. 

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

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

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

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

  341.             }

  342.         }

  343. 

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

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

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

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

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

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

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

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

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

  353.     }

  354. 

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

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

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

  358. 

  359.     return 0;

  360. }

  361. 

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

  363.                        AVPacket *avpkt)

  364. {

  365.     CFHDContext *s = avctx->priv_data;

  366.     GetByteContext gb;

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

  368.     AVFrame *pic = data;

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

  370.     int16_t *coeff_data;

  371. 

  372.     s->coded_format = AV_PIX_FMT_YUV422P10;

  373.     init_frame_defaults(s);

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

  375. 

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

  377. 

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

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

  380.         uint16_t tagu   = bytestream2_get_be16(&gb);

  381.         int16_t tag     = (int16_t)tagu;

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

  383.         uint16_t abstag = abs(tag);

  384.         int8_t abs_tag8 = abs(tag8);

  385.         uint16_t data   = bytestream2_get_be16(&gb);

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

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

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

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

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

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

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

  393.             s->coded_width = data;

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

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

  396.             s->coded_height = data;

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

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

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

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

  401.                 ret = AVERROR(EINVAL);

  402.                 break;

  403.             }

  404.             s->bpc = data;

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

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

  407.             s->channel_cnt = data;

  408.             if (data > 4) {

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

  410.                 ret = AVERROR_PATCHWELCOME;

  411.                 break;

  412.             }

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

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

  415.             if (data != SUBBAND_COUNT) {

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

  417.                 ret = AVERROR_PATCHWELCOME;

  418.                 break;

  419.             }

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

  421.             s->channel_num = data;

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

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

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

  425.                 ret = AVERROR(EINVAL);

  426.                 break;

  427.             }

  428.             init_plane_defaults(s);

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

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

  431.                 s->level++;

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

  433.             s->subband_num = data;

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

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

  436.                 ret = AVERROR(EINVAL);

  437.                 break;

  438.             }

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

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

  441.                 ret = AVERROR(EINVAL);

  442.                 break;

  443.             }

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

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

  446.             s->subband_num_actual = data;

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

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

  449.                 ret = AVERROR(EINVAL);

  450.                 break;

  451.             }

  452.         } else if (tag == LowpassPrecision)

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

  454.         else if (tag == Quantization) {

  455.             s->quantisation = data;

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

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

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

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

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

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

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

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

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

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

  466.                 ret = AVERROR(EINVAL);

  467.                 break;

  468.             }

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

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

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

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

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

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

  475.                 ret = AVERROR(EINVAL);

  476.                 break;

  477.             }

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

  479.         } else if (tag == SampleType)

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

  481.         else if (tag == TransformType) {

  482.             if (data != 0) {

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

  484.                 ret = AVERROR_PATCHWELCOME;

  485.                 break;

  486.             }

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

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

  489.             if (abstag == 0x4001)

  490.                 s->peak.level = 0;

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

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

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

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

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

  496.             ret = AVERROR_PATCHWELCOME;

  497.             break;

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

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

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

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

  502.                 ret = AVERROR_INVALIDDATA;

  503.                 break;

  504.             }

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

  506.                 uint16_t tag2 = bytestream2_get_be16(&gb);

  507.                 uint16_t val2 = bytestream2_get_be16(&gb);

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

  509.             }

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

  511.             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);

  512.             if (data < 3) {

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

  514.                 ret = AVERROR(EINVAL);

  515.                 break;

  516.             }

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

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

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

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

  521.             if (data < 3) {

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

  523.                 ret = AVERROR(EINVAL);

  524.                 break;

  525.             }

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

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

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

  529.             if (data < 3) {

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

  531.                 ret = AVERROR(EINVAL);

  532.                 break;

  533.             }

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

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

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

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

  538.             if (data < 3) {

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

  540.                 ret = AVERROR(EINVAL);

  541.                 break;

  542.             }

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

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

  545.             s->codebook = data;

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

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

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

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

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

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

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

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

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

  555.                 ret = AVERROR(EINVAL);

  556.                 break;

  557.             }

  558.             s->bpc = data;

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

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

  561.             if (data == 1) {

  562.                 s->coded_format = AV_PIX_FMT_YUV422P10;

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

  564.                 s->coded_format = AV_PIX_FMT_BAYER_RGGB16;

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

  566.                 s->coded_format = AV_PIX_FMT_GBRP12;

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

  568.                 s->coded_format = AV_PIX_FMT_GBRAP12;

  569.             } else {

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

  571.                 ret = AVERROR_PATCHWELCOME;

  572.                 break;

  573.             }

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

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

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

  577.             s->cropped_height = data;

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

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

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

  581.             s->peak.base    = gb;

  582.             s->peak.level   = 0;

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

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

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

  586.             s->peak.base    = gb;

  587.             s->peak.level   = 0;

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

  589.             s->peak.level = data;

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

  591.         } else

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

  593. 

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

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

  596.             s->coded_format != AV_PIX_FMT_NONE) {

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

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

  599.                 free_buffers(s);

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

  601.                     free_buffers(s);

  602.                     return ret;

  603.                 }

  604.             }

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

  606.             if (ret < 0)

  607.                 return ret;

  608.             if (s->cropped_height) {

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

  610.                 if (avctx->height < height)

  611.                     return AVERROR_INVALIDDATA;

  612.                 avctx->height = height;

  613.             }

  614.             frame.f->width =

  615.             frame.f->height = 0;

  616. 

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

  618.                 return ret;

  619. 

  620.             s->coded_width = 0;

  621.             s->coded_height = 0;

  622.             s->coded_format = AV_PIX_FMT_NONE;

  623.             got_buffer = 1;

  624.         }

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

  626. 

  627.         /* Lowpass coefficients */

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

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

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

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

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

  633. 

  634.             if (!got_buffer) {

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

  636.                 ret = AVERROR(EINVAL);

  637.                 goto end;

  638.             }

  639. 

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

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

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

  643.                 ret = AVERROR(EINVAL);

  644.                 goto end;

  645.             }

  646. 

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

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

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

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

  651. 

  652.                 coeff_data += lowpass_width;

  653.             }

  654. 

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

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

  657. 

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

  659.             if (lowpass_height & 1) {

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

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

  662.                        lowpass_width * sizeof(*coeff_data));

  663.             }

  664. 

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

  666.         }

  667. 

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

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

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

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

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

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

  674.             int expected;

  675.             int a_expected = highpass_a_height * highpass_a_width;

  676.             int level, run, coeff;

  677.             int count = 0, bytes;

  678. 

  679.             if (!got_buffer) {

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

  681.                 ret = AVERROR(EINVAL);

  682.                 goto end;

  683.             }

  684. 

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

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

  687.                 ret = AVERROR(EINVAL);

  688.                 goto end;

  689.             }

  690.             expected = highpass_height * highpass_stride;

  691. 

  692.             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);

  693. 

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

  695.             {

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

  697.                 if (!s->codebook) {

  698.                     while (1) {

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

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

  701.                                    VLC_BITS, 3, 1);

  702. 

  703.                         /* escape */

  704.                         if (level == 64)

  705.                             break;

  706. 

  707.                         count += run;

  708. 

  709.                         if (count > expected)

  710.                             break;

  711. 

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

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

  714.                             *coeff_data++ = coeff;

  715.                     }

  716.                 } else {

  717.                     while (1) {

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

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

  720.                                    VLC_BITS, 3, 1);

  721. 

  722.                         /* escape */

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

  724.                             break;

  725. 

  726.                         count += run;

  727. 

  728.                         if (count > expected)

  729.                             break;

  730. 

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

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

  733.                             *coeff_data++ = coeff;

  734.                     }

  735.                 }

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

  737.             }

  738. 

  739.             if (count > expected) {

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

  741.                 ret = AVERROR(EINVAL);

  742.                 goto end;

  743.             }

  744.             if (s->peak.level)

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

  746.             if (s->difference_coding)

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

  748. 

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

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

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

  752.                 ret = AVERROR(EINVAL);

  753.                 goto end;

  754.             } else

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

  756. 

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

  758.             s->codebook = 0;

  759. 

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

  761.             if (highpass_height & 1) {

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

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

  764.                        highpass_stride * sizeof(*coeff_data));

  765.             }

  766.         }

  767.     }

  768. 

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

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

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

  772.         ret = AVERROR(EINVAL);

  773.         goto end;

  774.     }

  775. 

  776.     if (!got_buffer) {

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

  778.         ret = AVERROR(EINVAL);

  779.         goto end;

  780.     }

  781. 

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

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

  784.         if (!s->progressive)

  785.             return AVERROR_INVALIDDATA;

  786.         planes = 4;

  787.     }

  788. 

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

  790.         /* level 1 */

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

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

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

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

  795.         ptrdiff_t dst_linesize;

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

  797. 

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

  799.             act_plane = 0;

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

  801.         } else {

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

  803.         }

  804. 

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

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

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

  808.             ret = AVERROR(EINVAL);

  809.             goto end;

  810.         }

  811. 

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

  813. 

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

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

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

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

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

  819.             low++;

  820.             high++;

  821.             output++;

  822.         }

  823. 

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

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

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

  827. 

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

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

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

  831.             low++;

  832.             high++;

  833.             output++;

  834.         }

  835. 

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

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

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

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

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

  841.             low    += lowpass_width;

  842.             high   += lowpass_width;

  843.             output += lowpass_width * 2;

  844.         }

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

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

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

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

  849.                     output[j] *= 4;

  850. 

  851.                 output += lowpass_width * 2;

  852.             }

  853.         }

  854. 

  855.         /* level 2 */

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

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

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

  859. 

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

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

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

  863.             ret = AVERROR(EINVAL);

  864.             goto end;

  865.         }

  866. 

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

  868. 

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

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

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

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

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

  874.             low++;

  875.             high++;

  876.             output++;

  877.         }

  878. 

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

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

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

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

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

  884.             low++;

  885.             high++;

  886.             output++;

  887.         }

  888. 

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

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

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

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

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

  894.             low    += lowpass_width;

  895.             high   += lowpass_width;

  896.             output += lowpass_width * 2;

  897.         }

  898. 

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

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

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

  902.                 output[j] *= 4;

  903. 

  904.             output += lowpass_width * 2;

  905.         }

  906. 

  907.         /* level 3 */

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

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

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

  911. 

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

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

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

  915.             ret = AVERROR(EINVAL);

  916.             goto end;

  917.         }

  918. 

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

  920.         if (s->progressive) {

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

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

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

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

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

  926.                 low++;

  927.                 high++;

  928.                 output++;

  929.             }

  930. 

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

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

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

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

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

  936.                 low++;

  937.                 high++;

  938.                 output++;

  939.             }

  940. 

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

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

  943.                 if (plane & 1)

  944.                     dst++;

  945.                 if (plane > 1)

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

  947.             }

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

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

  950. 

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

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

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

  954.                 ) {

  955.                 ret = AVERROR_INVALIDDATA;

  956.                 goto end;

  957.             }

  958. 

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

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

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

  962.                 else

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

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

  965.                     process_alpha(dst, lowpass_width * 2);

  966.                 low  += lowpass_width;

  967.                 high += lowpass_width;

  968.                 dst  += dst_linesize;

  969.             }

  970.         } else {

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

  972.             pic->interlaced_frame = 1;

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

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

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

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

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

  978.                 low    += lowpass_width;

  979.                 high   += lowpass_width;

  980.                 output += lowpass_width * 2;

  981.             }

  982. 

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

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

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

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

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

  988.                 low    += lowpass_width;

  989.                 high   += lowpass_width;

  990.                 output += lowpass_width * 2;

  991.             }

  992. 

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

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

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

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

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

  998.                 low  += lowpass_width * 2;

  999.                 high += lowpass_width * 2;

  1000.                 dst  += pic->linesize[act_plane];

  1001.             }

  1002.         }

  1003.     }

  1004. 

  1005. 

  1006.     if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16)

  1007.         process_bayer(pic);

  1008. end:

  1009.     if (ret < 0)

  1010.         return ret;

  1011. 

  1012.     *got_frame = 1;

  1013.     return avpkt->size;

  1014. }

  1015. 

  1016. static av_cold int cfhd_close(AVCodecContext *avctx)

  1017. {

  1018.     CFHDContext *s = avctx->priv_data;

  1019. 

  1020.     free_buffers(s);

  1021. 

  1022.     ff_free_vlc(&s->vlc_9);

  1023.     ff_free_vlc(&s->vlc_18);

  1024. 

  1025.     return 0;

  1026. }

  1027. 

  1028. AVCodec ff_cfhd_decoder = {

  1029.     .name             = "cfhd",

  1030.     .long_name        = NULL_IF_CONFIG_SMALL("Cineform HD"),

  1031.     .type             = AVMEDIA_TYPE_VIDEO,

  1032.     .id               = AV_CODEC_ID_CFHD,

  1033.     .priv_data_size   = sizeof(CFHDContext),

  1034.     .init             = cfhd_init,

  1035.     .close            = cfhd_close,

  1036.     .decode           = cfhd_decode,

  1037.     .capabilities     = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS,

  1038.     .caps_internal    = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,

  1039. };