1 /*
2 * Copyright (c) 2015-2016 Kieran Kunhya <kieran@kunhya.com>
3 *
4 * This file is part of FFmpeg.
5 *
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 /**
22 * @file
23 * Cineform HD video decoder
24 */
25
26 #include "libavutil/attributes.h"
27 #include "libavutil/buffer.h"
28 #include "libavutil/common.h"
29 #include "libavutil/imgutils.h"
30 #include "libavutil/intreadwrite.h"
31 #include "libavutil/opt.h"
32
33 #include "avcodec.h"
34 #include "bytestream.h"
35 #include "get_bits.h"
36 #include "internal.h"
37 #include "thread.h"
38 #include "cfhd.h"
39
40 #define ALPHA_COMPAND_DC_OFFSET 256
41 #define ALPHA_COMPAND_GAIN 9400
42
43 enum CFHDParam {
44 ChannelCount = 12,
45 SubbandCount = 14,
46 ImageWidth = 20,
47 ImageHeight = 21,
48 LowpassPrecision = 35,
49 SubbandNumber = 48,
50 Quantization = 53,
51 ChannelNumber = 62,
52 SampleFlags = 68,
53 BitsPerComponent = 101,
54 ChannelWidth = 104,
55 ChannelHeight = 105,
56 PrescaleShift = 109,
57 };
58
59
60
cfhd_init(AVCodecContext * avctx)61 static av_cold int cfhd_init(AVCodecContext *avctx)
62 {
63 CFHDContext *s = avctx->priv_data;
64
65 avctx->bits_per_raw_sample = 10;
66 s->avctx = avctx;
67
68 return ff_cfhd_init_vlcs(s);
69 }
70
init_plane_defaults(CFHDContext * s)71 static void init_plane_defaults(CFHDContext *s)
72 {
73 s->subband_num = 0;
74 s->level = 0;
75 s->subband_num_actual = 0;
76 }
77
init_peak_table_defaults(CFHDContext * s)78 static void init_peak_table_defaults(CFHDContext *s)
79 {
80 s->peak.level = 0;
81 s->peak.offset = 0;
82 memset(&s->peak.base, 0, sizeof(s->peak.base));
83 }
84
init_frame_defaults(CFHDContext * s)85 static void init_frame_defaults(CFHDContext *s)
86 {
87 s->coded_width = 0;
88 s->coded_height = 0;
89 s->cropped_height = 0;
90 s->bpc = 10;
91 s->channel_cnt = 4;
92 s->subband_cnt = SUBBAND_COUNT;
93 s->channel_num = 0;
94 s->lowpass_precision = 16;
95 s->quantisation = 1;
96 s->wavelet_depth = 3;
97 s->pshift = 1;
98 s->codebook = 0;
99 s->difference_coding = 0;
100 s->progressive = 0;
101 init_plane_defaults(s);
102 init_peak_table_defaults(s);
103 }
104
105 /* TODO: merge with VLC tables or use LUT */
dequant_and_decompand(int level,int quantisation,int codebook)106 static inline int dequant_and_decompand(int level, int quantisation, int codebook)
107 {
108 if (codebook == 0 || codebook == 1) {
109 int64_t abslevel = abs(level);
110 if (level < 264)
111 return (abslevel + ((768 * abslevel * abslevel * abslevel) / (255 * 255 * 255))) *
112 FFSIGN(level) * quantisation;
113 else
114 return level * quantisation;
115 } else
116 return level * quantisation;
117 }
118
difference_coding(int16_t * band,int width,int height)119 static inline void difference_coding(int16_t *band, int width, int height)
120 {
121
122 int i,j;
123 for (i = 0; i < height; i++) {
124 for (j = 1; j < width; j++) {
125 band[j] += band[j-1];
126 }
127 band += width;
128 }
129 }
130
peak_table(int16_t * band,Peak * peak,int length)131 static inline void peak_table(int16_t *band, Peak *peak, int length)
132 {
133 int i;
134 for (i = 0; i < length; i++)
135 if (abs(band[i]) > peak->level)
136 band[i] = bytestream2_get_le16(&peak->base);
137 }
138
process_alpha(int16_t * alpha,int width)139 static inline void process_alpha(int16_t *alpha, int width)
140 {
141 int i, channel;
142 for (i = 0; i < width; i++) {
143 channel = alpha[i];
144 channel -= ALPHA_COMPAND_DC_OFFSET;
145 channel <<= 3;
146 channel *= ALPHA_COMPAND_GAIN;
147 channel >>= 16;
148 channel = av_clip_uintp2(channel, 12);
149 alpha[i] = channel;
150 }
151 }
152
process_bayer(AVFrame * frame)153 static inline void process_bayer(AVFrame *frame)
154 {
155 const int linesize = frame->linesize[0];
156 uint16_t *r = (uint16_t *)frame->data[0];
157 uint16_t *g1 = (uint16_t *)(frame->data[0] + 2);
158 uint16_t *g2 = (uint16_t *)(frame->data[0] + frame->linesize[0]);
159 uint16_t *b = (uint16_t *)(frame->data[0] + frame->linesize[0] + 2);
160 const int mid = 2048;
161
162 for (int y = 0; y < frame->height >> 1; y++) {
163 for (int x = 0; x < frame->width; x += 2) {
164 int R, G1, G2, B;
165 int g, rg, bg, gd;
166
167 g = r[x];
168 rg = g1[x];
169 bg = g2[x];
170 gd = b[x];
171 gd -= mid;
172
173 R = (rg - mid) * 2 + g;
174 G1 = g + gd;
175 G2 = g - gd;
176 B = (bg - mid) * 2 + g;
177
178 R = av_clip_uintp2(R * 16, 16);
179 G1 = av_clip_uintp2(G1 * 16, 16);
180 G2 = av_clip_uintp2(G2 * 16, 16);
181 B = av_clip_uintp2(B * 16, 16);
182
183 r[x] = R;
184 g1[x] = G1;
185 g2[x] = G2;
186 b[x] = B;
187 }
188
189 r += linesize;
190 g1 += linesize;
191 g2 += linesize;
192 b += linesize;
193 }
194 }
195
filter(int16_t * output,ptrdiff_t out_stride,int16_t * low,ptrdiff_t low_stride,int16_t * high,ptrdiff_t high_stride,int len,int clip)196 static inline void filter(int16_t *output, ptrdiff_t out_stride,
197 int16_t *low, ptrdiff_t low_stride,
198 int16_t *high, ptrdiff_t high_stride,
199 int len, int clip)
200 {
201 int16_t tmp;
202 int i;
203
204 for (i = 0; i < len; i++) {
205 if (i == 0) {
206 tmp = (11*low[0*low_stride] - 4*low[1*low_stride] + low[2*low_stride] + 4) >> 3;
207 output[(2*i+0)*out_stride] = (tmp + high[0*high_stride]) >> 1;
208 if (clip)
209 output[(2*i+0)*out_stride] = av_clip_uintp2_c(output[(2*i+0)*out_stride], clip);
210
211 tmp = ( 5*low[0*low_stride] + 4*low[1*low_stride] - low[2*low_stride] + 4) >> 3;
212 output[(2*i+1)*out_stride] = (tmp - high[0*high_stride]) >> 1;
213 if (clip)
214 output[(2*i+1)*out_stride] = av_clip_uintp2_c(output[(2*i+1)*out_stride], clip);
215 } else if (i == len-1) {
216 tmp = ( 5*low[i*low_stride] + 4*low[(i-1)*low_stride] - low[(i-2)*low_stride] + 4) >> 3;
217 output[(2*i+0)*out_stride] = (tmp + high[i*high_stride]) >> 1;
218 if (clip)
219 output[(2*i+0)*out_stride] = av_clip_uintp2_c(output[(2*i+0)*out_stride], clip);
220
221 tmp = (11*low[i*low_stride] - 4*low[(i-1)*low_stride] + low[(i-2)*low_stride] + 4) >> 3;
222 output[(2*i+1)*out_stride] = (tmp - high[i*high_stride]) >> 1;
223 if (clip)
224 output[(2*i+1)*out_stride] = av_clip_uintp2_c(output[(2*i+1)*out_stride], clip);
225 } else {
226 tmp = (low[(i-1)*low_stride] - low[(i+1)*low_stride] + 4) >> 3;
227 output[(2*i+0)*out_stride] = (tmp + low[i*low_stride] + high[i*high_stride]) >> 1;
228 if (clip)
229 output[(2*i+0)*out_stride] = av_clip_uintp2_c(output[(2*i+0)*out_stride], clip);
230
231 tmp = (low[(i+1)*low_stride] - low[(i-1)*low_stride] + 4) >> 3;
232 output[(2*i+1)*out_stride] = (tmp + low[i*low_stride] - high[i*high_stride]) >> 1;
233 if (clip)
234 output[(2*i+1)*out_stride] = av_clip_uintp2_c(output[(2*i+1)*out_stride], clip);
235 }
236 }
237 }
238
interlaced_vertical_filter(int16_t * output,int16_t * low,int16_t * high,int width,int linesize,int plane)239 static inline void interlaced_vertical_filter(int16_t *output, int16_t *low, int16_t *high,
240 int width, int linesize, int plane)
241 {
242 int i;
243 int16_t even, odd;
244 for (i = 0; i < width; i++) {
245 even = (low[i] - high[i])/2;
246 odd = (low[i] + high[i])/2;
247 output[i] = av_clip_uintp2(even, 10);
248 output[i + linesize] = av_clip_uintp2(odd, 10);
249 }
250 }
horiz_filter(int16_t * output,int16_t * low,int16_t * high,int width)251 static void horiz_filter(int16_t *output, int16_t *low, int16_t *high,
252 int width)
253 {
254 filter(output, 1, low, 1, high, 1, width, 0);
255 }
256
horiz_filter_clip(int16_t * output,int16_t * low,int16_t * high,int width,int clip)257 static void horiz_filter_clip(int16_t *output, int16_t *low, int16_t *high,
258 int width, int clip)
259 {
260 filter(output, 1, low, 1, high, 1, width, clip);
261 }
262
horiz_filter_clip_bayer(int16_t * output,int16_t * low,int16_t * high,int width,int clip)263 static void horiz_filter_clip_bayer(int16_t *output, int16_t *low, int16_t *high,
264 int width, int clip)
265 {
266 filter(output, 2, low, 1, high, 1, width, clip);
267 }
268
vert_filter(int16_t * output,ptrdiff_t out_stride,int16_t * low,ptrdiff_t low_stride,int16_t * high,ptrdiff_t high_stride,int len)269 static void vert_filter(int16_t *output, ptrdiff_t out_stride,
270 int16_t *low, ptrdiff_t low_stride,
271 int16_t *high, ptrdiff_t high_stride, int len)
272 {
273 filter(output, out_stride, low, low_stride, high, high_stride, len, 0);
274 }
275
free_buffers(CFHDContext * s)276 static void free_buffers(CFHDContext *s)
277 {
278 int i, j;
279
280 for (i = 0; i < FF_ARRAY_ELEMS(s->plane); i++) {
281 av_freep(&s->plane[i].idwt_buf);
282 av_freep(&s->plane[i].idwt_tmp);
283
284 for (j = 0; j < 9; j++)
285 s->plane[i].subband[j] = NULL;
286
287 for (j = 0; j < 8; j++)
288 s->plane[i].l_h[j] = NULL;
289 }
290 s->a_height = 0;
291 s->a_width = 0;
292 }
293
alloc_buffers(AVCodecContext * avctx)294 static int alloc_buffers(AVCodecContext *avctx)
295 {
296 CFHDContext *s = avctx->priv_data;
297 int i, j, ret, planes;
298 int chroma_x_shift, chroma_y_shift;
299 unsigned k;
300
301 if (s->coded_format == AV_PIX_FMT_BAYER_RGGB16) {
302 s->coded_width *= 2;
303 s->coded_height *= 2;
304 }
305
306 if ((ret = ff_set_dimensions(avctx, s->coded_width, s->coded_height)) < 0)
307 return ret;
308 avctx->pix_fmt = s->coded_format;
309
310 if ((ret = av_pix_fmt_get_chroma_sub_sample(s->coded_format,
311 &chroma_x_shift,
312 &chroma_y_shift)) < 0)
313 return ret;
314 planes = av_pix_fmt_count_planes(s->coded_format);
315 if (s->coded_format == AV_PIX_FMT_BAYER_RGGB16) {
316 planes = 4;
317 chroma_x_shift = 1;
318 chroma_y_shift = 1;
319 }
320
321 for (i = 0; i < planes; i++) {
322 int w8, h8, w4, h4, w2, h2;
323 int width = i ? avctx->width >> chroma_x_shift : avctx->width;
324 int height = i ? avctx->height >> chroma_y_shift : avctx->height;
325 ptrdiff_t stride = FFALIGN(width / 8, 8) * 8;
326 if (chroma_y_shift)
327 height = FFALIGN(height / 8, 2) * 8;
328 s->plane[i].width = width;
329 s->plane[i].height = height;
330 s->plane[i].stride = stride;
331
332 w8 = FFALIGN(s->plane[i].width / 8, 8);
333 h8 = height / 8;
334 w4 = w8 * 2;
335 h4 = h8 * 2;
336 w2 = w4 * 2;
337 h2 = h4 * 2;
338
339 s->plane[i].idwt_buf =
340 av_mallocz_array(height * stride, sizeof(*s->plane[i].idwt_buf));
341 s->plane[i].idwt_tmp =
342 av_malloc_array(height * stride, sizeof(*s->plane[i].idwt_tmp));
343 if (!s->plane[i].idwt_buf || !s->plane[i].idwt_tmp)
344 return AVERROR(ENOMEM);
345
346 s->plane[i].subband[0] = s->plane[i].idwt_buf;
347 s->plane[i].subband[1] = s->plane[i].idwt_buf + 2 * w8 * h8;
348 s->plane[i].subband[2] = s->plane[i].idwt_buf + 1 * w8 * h8;
349 s->plane[i].subband[3] = s->plane[i].idwt_buf + 3 * w8 * h8;
350 s->plane[i].subband[4] = s->plane[i].idwt_buf + 2 * w4 * h4;
351 s->plane[i].subband[5] = s->plane[i].idwt_buf + 1 * w4 * h4;
352 s->plane[i].subband[6] = s->plane[i].idwt_buf + 3 * w4 * h4;
353 s->plane[i].subband[7] = s->plane[i].idwt_buf + 2 * w2 * h2;
354 s->plane[i].subband[8] = s->plane[i].idwt_buf + 1 * w2 * h2;
355 s->plane[i].subband[9] = s->plane[i].idwt_buf + 3 * w2 * h2;
356
357 for (j = 0; j < DWT_LEVELS; j++) {
358 for (k = 0; k < FF_ARRAY_ELEMS(s->plane[i].band[j]); k++) {
359 s->plane[i].band[j][k].a_width = w8 << j;
360 s->plane[i].band[j][k].a_height = h8 << j;
361 }
362 }
363
364 /* ll2 and ll1 commented out because they are done in-place */
365 s->plane[i].l_h[0] = s->plane[i].idwt_tmp;
366 s->plane[i].l_h[1] = s->plane[i].idwt_tmp + 2 * w8 * h8;
367 // s->plane[i].l_h[2] = ll2;
368 s->plane[i].l_h[3] = s->plane[i].idwt_tmp;
369 s->plane[i].l_h[4] = s->plane[i].idwt_tmp + 2 * w4 * h4;
370 // s->plane[i].l_h[5] = ll1;
371 s->plane[i].l_h[6] = s->plane[i].idwt_tmp;
372 s->plane[i].l_h[7] = s->plane[i].idwt_tmp + 2 * w2 * h2;
373 }
374
375 s->a_height = s->coded_height;
376 s->a_width = s->coded_width;
377 s->a_format = s->coded_format;
378
379 return 0;
380 }
381
cfhd_decode(AVCodecContext * avctx,void * data,int * got_frame,AVPacket * avpkt)382 static int cfhd_decode(AVCodecContext *avctx, void *data, int *got_frame,
383 AVPacket *avpkt)
384 {
385 CFHDContext *s = avctx->priv_data;
386 GetByteContext gb;
387 ThreadFrame frame = { .f = data };
388 AVFrame *pic = data;
389 int ret = 0, i, j, planes, plane, got_buffer = 0;
390 int16_t *coeff_data;
391
392 s->coded_format = AV_PIX_FMT_YUV422P10;
393 init_frame_defaults(s);
394 planes = av_pix_fmt_count_planes(s->coded_format);
395
396 bytestream2_init(&gb, avpkt->data, avpkt->size);
397
398 while (bytestream2_get_bytes_left(&gb) > 4) {
399 /* Bit weird but implement the tag parsing as the spec says */
400 uint16_t tagu = bytestream2_get_be16(&gb);
401 int16_t tag = (int16_t)tagu;
402 int8_t tag8 = (int8_t)(tagu >> 8);
403 uint16_t abstag = abs(tag);
404 int8_t abs_tag8 = abs(tag8);
405 uint16_t data = bytestream2_get_be16(&gb);
406 if (abs_tag8 >= 0x60 && abs_tag8 <= 0x6f) {
407 av_log(avctx, AV_LOG_DEBUG, "large len %x\n", ((tagu & 0xff) << 16) | data);
408 } else if (tag == SampleFlags) {
409 av_log(avctx, AV_LOG_DEBUG, "Progressive?%"PRIu16"\n", data);
410 s->progressive = data & 0x0001;
411 } else if (tag == ImageWidth) {
412 av_log(avctx, AV_LOG_DEBUG, "Width %"PRIu16"\n", data);
413 s->coded_width = data;
414 } else if (tag == ImageHeight) {
415 av_log(avctx, AV_LOG_DEBUG, "Height %"PRIu16"\n", data);
416 s->coded_height = data;
417 } else if (tag == 101) {
418 av_log(avctx, AV_LOG_DEBUG, "Bits per component: %"PRIu16"\n", data);
419 if (data < 1 || data > 31) {
420 av_log(avctx, AV_LOG_ERROR, "Bits per component %d is invalid\n", data);
421 ret = AVERROR(EINVAL);
422 break;
423 }
424 s->bpc = data;
425 } else if (tag == ChannelCount) {
426 av_log(avctx, AV_LOG_DEBUG, "Channel Count: %"PRIu16"\n", data);
427 s->channel_cnt = data;
428 if (data > 4) {
429 av_log(avctx, AV_LOG_ERROR, "Channel Count of %"PRIu16" is unsupported\n", data);
430 ret = AVERROR_PATCHWELCOME;
431 break;
432 }
433 } else if (tag == SubbandCount) {
434 av_log(avctx, AV_LOG_DEBUG, "Subband Count: %"PRIu16"\n", data);
435 if (data != SUBBAND_COUNT) {
436 av_log(avctx, AV_LOG_ERROR, "Subband Count of %"PRIu16" is unsupported\n", data);
437 ret = AVERROR_PATCHWELCOME;
438 break;
439 }
440 } else if (tag == ChannelNumber) {
441 s->channel_num = data;
442 av_log(avctx, AV_LOG_DEBUG, "Channel number %"PRIu16"\n", data);
443 if (s->channel_num >= planes) {
444 av_log(avctx, AV_LOG_ERROR, "Invalid channel number\n");
445 ret = AVERROR(EINVAL);
446 break;
447 }
448 init_plane_defaults(s);
449 } else if (tag == SubbandNumber) {
450 if (s->subband_num != 0 && data == 1) // hack
451 s->level++;
452 av_log(avctx, AV_LOG_DEBUG, "Subband number %"PRIu16"\n", data);
453 s->subband_num = data;
454 if (s->level >= DWT_LEVELS) {
455 av_log(avctx, AV_LOG_ERROR, "Invalid level\n");
456 ret = AVERROR(EINVAL);
457 break;
458 }
459 if (s->subband_num > 3) {
460 av_log(avctx, AV_LOG_ERROR, "Invalid subband number\n");
461 ret = AVERROR(EINVAL);
462 break;
463 }
464 } else if (tag == 51) {
465 av_log(avctx, AV_LOG_DEBUG, "Subband number actual %"PRIu16"\n", data);
466 s->subband_num_actual = data;
467 if (s->subband_num_actual >= 10) {
468 av_log(avctx, AV_LOG_ERROR, "Invalid subband number actual\n");
469 ret = AVERROR(EINVAL);
470 break;
471 }
472 } else if (tag == LowpassPrecision)
473 av_log(avctx, AV_LOG_DEBUG, "Lowpass precision bits: %"PRIu16"\n", data);
474 else if (tag == Quantization) {
475 s->quantisation = data;
476 av_log(avctx, AV_LOG_DEBUG, "Quantisation: %"PRIu16"\n", data);
477 } else if (tag == PrescaleShift) {
478 s->prescale_shift[0] = (data >> 0) & 0x7;
479 s->prescale_shift[1] = (data >> 3) & 0x7;
480 s->prescale_shift[2] = (data >> 6) & 0x7;
481 av_log(avctx, AV_LOG_DEBUG, "Prescale shift (VC-5): %x\n", data);
482 } else if (tag == 27) {
483 av_log(avctx, AV_LOG_DEBUG, "Lowpass width %"PRIu16"\n", data);
484 if (data < 3 || data > s->plane[s->channel_num].band[0][0].a_width) {
485 av_log(avctx, AV_LOG_ERROR, "Invalid lowpass width\n");
486 ret = AVERROR(EINVAL);
487 break;
488 }
489 s->plane[s->channel_num].band[0][0].width = data;
490 s->plane[s->channel_num].band[0][0].stride = data;
491 } else if (tag == 28) {
492 av_log(avctx, AV_LOG_DEBUG, "Lowpass height %"PRIu16"\n", data);
493 if (data < 3 || data > s->plane[s->channel_num].band[0][0].a_height) {
494 av_log(avctx, AV_LOG_ERROR, "Invalid lowpass height\n");
495 ret = AVERROR(EINVAL);
496 break;
497 }
498 s->plane[s->channel_num].band[0][0].height = data;
499 } else if (tag == 1)
500 av_log(avctx, AV_LOG_DEBUG, "Sample type? %"PRIu16"\n", data);
501 else if (tag == 10) {
502 if (data != 0) {
503 avpriv_report_missing_feature(avctx, "Transform type of %"PRIu16, data);
504 ret = AVERROR_PATCHWELCOME;
505 break;
506 } else if (data == 1) {
507 av_log(avctx, AV_LOG_ERROR, "unsupported transform type\n");
508 ret = AVERROR_PATCHWELCOME;
509 break;
510 }
511 av_log(avctx, AV_LOG_DEBUG, "Transform-type? %"PRIu16"\n", data);
512 } else if (abstag >= 0x4000 && abstag <= 0x40ff) {
513 if (abstag == 0x4001)
514 s->peak.level = 0;
515 av_log(avctx, AV_LOG_DEBUG, "Small chunk length %d %s\n", data * 4, tag < 0 ? "optional" : "required");
516 bytestream2_skipu(&gb, data * 4);
517 } else if (tag == 23) {
518 av_log(avctx, AV_LOG_DEBUG, "Skip frame\n");
519 avpriv_report_missing_feature(avctx, "Skip frame");
520 ret = AVERROR_PATCHWELCOME;
521 break;
522 } else if (tag == 2) {
523 av_log(avctx, AV_LOG_DEBUG, "tag=2 header - skipping %i tag/value pairs\n", data);
524 if (data > bytestream2_get_bytes_left(&gb) / 4) {
525 av_log(avctx, AV_LOG_ERROR, "too many tag/value pairs (%d)\n", data);
526 ret = AVERROR_INVALIDDATA;
527 break;
528 }
529 for (i = 0; i < data; i++) {
530 uint16_t tag2 = bytestream2_get_be16(&gb);
531 uint16_t val2 = bytestream2_get_be16(&gb);
532 av_log(avctx, AV_LOG_DEBUG, "Tag/Value = %x %x\n", tag2, val2);
533 }
534 } else if (tag == 41) {
535 av_log(avctx, AV_LOG_DEBUG, "Highpass width %i channel %i level %i subband %i\n", data, s->channel_num, s->level, s->subband_num);
536 if (data < 3) {
537 av_log(avctx, AV_LOG_ERROR, "Invalid highpass width\n");
538 ret = AVERROR(EINVAL);
539 break;
540 }
541 s->plane[s->channel_num].band[s->level][s->subband_num].width = data;
542 s->plane[s->channel_num].band[s->level][s->subband_num].stride = FFALIGN(data, 8);
543 } else if (tag == 42) {
544 av_log(avctx, AV_LOG_DEBUG, "Highpass height %i\n", data);
545 if (data < 3) {
546 av_log(avctx, AV_LOG_ERROR, "Invalid highpass height\n");
547 ret = AVERROR(EINVAL);
548 break;
549 }
550 s->plane[s->channel_num].band[s->level][s->subband_num].height = data;
551 } else if (tag == 49) {
552 av_log(avctx, AV_LOG_DEBUG, "Highpass width2 %i\n", data);
553 if (data < 3) {
554 av_log(avctx, AV_LOG_ERROR, "Invalid highpass width2\n");
555 ret = AVERROR(EINVAL);
556 break;
557 }
558 s->plane[s->channel_num].band[s->level][s->subband_num].width = data;
559 s->plane[s->channel_num].band[s->level][s->subband_num].stride = FFALIGN(data, 8);
560 } else if (tag == 50) {
561 av_log(avctx, AV_LOG_DEBUG, "Highpass height2 %i\n", data);
562 if (data < 3) {
563 av_log(avctx, AV_LOG_ERROR, "Invalid highpass height2\n");
564 ret = AVERROR(EINVAL);
565 break;
566 }
567 s->plane[s->channel_num].band[s->level][s->subband_num].height = data;
568 } else if (tag == 71) {
569 s->codebook = data;
570 av_log(avctx, AV_LOG_DEBUG, "Codebook %i\n", s->codebook);
571 } else if (tag == 72) {
572 s->codebook = data & 0xf;
573 s->difference_coding = (data >> 4) & 1;
574 av_log(avctx, AV_LOG_DEBUG, "Other codebook? %i\n", s->codebook);
575 } else if (tag == 70) {
576 av_log(avctx, AV_LOG_DEBUG, "Subsampling or bit-depth flag? %i\n", data);
577 if (!(data == 10 || data == 12)) {
578 av_log(avctx, AV_LOG_ERROR, "Invalid bits per channel\n");
579 ret = AVERROR(EINVAL);
580 break;
581 }
582 s->bpc = data;
583 } else if (tag == 84) {
584 av_log(avctx, AV_LOG_DEBUG, "Sample format? %i\n", data);
585 if (data == 1) {
586 s->coded_format = AV_PIX_FMT_YUV422P10;
587 } else if (data == 2) {
588 s->coded_format = AV_PIX_FMT_BAYER_RGGB16;
589 } else if (data == 3) {
590 s->coded_format = AV_PIX_FMT_GBRP12;
591 } else if (data == 4) {
592 s->coded_format = AV_PIX_FMT_GBRAP12;
593 } else {
594 avpriv_report_missing_feature(avctx, "Sample format of %"PRIu16, data);
595 ret = AVERROR_PATCHWELCOME;
596 break;
597 }
598 planes = data == 2 ? 4 : av_pix_fmt_count_planes(s->coded_format);
599 } else if (tag == -85) {
600 av_log(avctx, AV_LOG_DEBUG, "Cropped height %"PRIu16"\n", data);
601 s->cropped_height = data;
602 } else if (tag == -75) {
603 s->peak.offset &= ~0xffff;
604 s->peak.offset |= (data & 0xffff);
605 s->peak.base = gb;
606 s->peak.level = 0;
607 } else if (tag == -76) {
608 s->peak.offset &= 0xffff;
609 s->peak.offset |= (data & 0xffffU)<<16;
610 s->peak.base = gb;
611 s->peak.level = 0;
612 } else if (tag == -74 && s->peak.offset) {
613 s->peak.level = data;
614 if (s->peak.offset < 4 - bytestream2_tell(&s->peak.base) ||
615 s->peak.offset > 4 + bytestream2_get_bytes_left(&s->peak.base)
616 ) {
617 ret = AVERROR_INVALIDDATA;
618 goto end;
619 }
620 bytestream2_seek(&s->peak.base, s->peak.offset - 4, SEEK_CUR);
621 } else
622 av_log(avctx, AV_LOG_DEBUG, "Unknown tag %i data %x\n", tag, data);
623
624 /* Some kind of end of header tag */
625 if (tag == 4 && data == 0x1a4a && s->coded_width && s->coded_height &&
626 s->coded_format != AV_PIX_FMT_NONE) {
627 if (s->a_width != s->coded_width || s->a_height != s->coded_height ||
628 s->a_format != s->coded_format) {
629 free_buffers(s);
630 if ((ret = alloc_buffers(avctx)) < 0) {
631 free_buffers(s);
632 return ret;
633 }
634 }
635 ret = ff_set_dimensions(avctx, s->coded_width, s->coded_height);
636 if (ret < 0)
637 return ret;
638 if (s->cropped_height) {
639 unsigned height = s->cropped_height << (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16);
640 if (avctx->height < height)
641 return AVERROR_INVALIDDATA;
642 avctx->height = height;
643 }
644 frame.f->width =
645 frame.f->height = 0;
646
647 if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0)
648 return ret;
649
650 s->coded_width = 0;
651 s->coded_height = 0;
652 s->coded_format = AV_PIX_FMT_NONE;
653 got_buffer = 1;
654 }
655 coeff_data = s->plane[s->channel_num].subband[s->subband_num_actual];
656
657 /* Lowpass coefficients */
658 if (tag == 4 && data == 0xf0f && s->a_width && s->a_height) {
659 int lowpass_height = s->plane[s->channel_num].band[0][0].height;
660 int lowpass_width = s->plane[s->channel_num].band[0][0].width;
661 int lowpass_a_height = s->plane[s->channel_num].band[0][0].a_height;
662 int lowpass_a_width = s->plane[s->channel_num].band[0][0].a_width;
663
664 if (!got_buffer) {
665 av_log(avctx, AV_LOG_ERROR, "No end of header tag found\n");
666 ret = AVERROR(EINVAL);
667 goto end;
668 }
669
670 if (lowpass_height > lowpass_a_height || lowpass_width > lowpass_a_width ||
671 lowpass_a_width * lowpass_a_height * sizeof(int16_t) > bytestream2_get_bytes_left(&gb)) {
672 av_log(avctx, AV_LOG_ERROR, "Too many lowpass coefficients\n");
673 ret = AVERROR(EINVAL);
674 goto end;
675 }
676
677 av_log(avctx, AV_LOG_DEBUG, "Start of lowpass coeffs component %d height:%d, width:%d\n", s->channel_num, lowpass_height, lowpass_width);
678 for (i = 0; i < lowpass_height; i++) {
679 for (j = 0; j < lowpass_width; j++)
680 coeff_data[j] = bytestream2_get_be16u(&gb);
681
682 coeff_data += lowpass_width;
683 }
684
685 /* Align to mod-4 position to continue reading tags */
686 bytestream2_seek(&gb, bytestream2_tell(&gb) & 3, SEEK_CUR);
687
688 /* Copy last line of coefficients if odd height */
689 if (lowpass_height & 1) {
690 memcpy(&coeff_data[lowpass_height * lowpass_width],
691 &coeff_data[(lowpass_height - 1) * lowpass_width],
692 lowpass_width * sizeof(*coeff_data));
693 }
694
695 av_log(avctx, AV_LOG_DEBUG, "Lowpass coefficients %d\n", lowpass_width * lowpass_height);
696 }
697
698 if (tag == 55 && s->subband_num_actual != 255 && s->a_width && s->a_height) {
699 int highpass_height = s->plane[s->channel_num].band[s->level][s->subband_num].height;
700 int highpass_width = s->plane[s->channel_num].band[s->level][s->subband_num].width;
701 int highpass_a_width = s->plane[s->channel_num].band[s->level][s->subband_num].a_width;
702 int highpass_a_height = s->plane[s->channel_num].band[s->level][s->subband_num].a_height;
703 int highpass_stride = s->plane[s->channel_num].band[s->level][s->subband_num].stride;
704 int expected;
705 int a_expected = highpass_a_height * highpass_a_width;
706 int level, run, coeff;
707 int count = 0, bytes;
708
709 if (!got_buffer) {
710 av_log(avctx, AV_LOG_ERROR, "No end of header tag found\n");
711 ret = AVERROR(EINVAL);
712 goto end;
713 }
714
715 if (highpass_height > highpass_a_height || highpass_width > highpass_a_width || a_expected < highpass_height * (uint64_t)highpass_stride) {
716 av_log(avctx, AV_LOG_ERROR, "Too many highpass coefficients\n");
717 ret = AVERROR(EINVAL);
718 goto end;
719 }
720 expected = highpass_height * highpass_stride;
721
722 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);
723
724 init_get_bits(&s->gb, gb.buffer, bytestream2_get_bytes_left(&gb) * 8);
725 {
726 OPEN_READER(re, &s->gb);
727 if (!s->codebook) {
728 while (1) {
729 UPDATE_CACHE(re, &s->gb);
730 GET_RL_VLC(level, run, re, &s->gb, s->table_9_rl_vlc,
731 VLC_BITS, 3, 1);
732
733 /* escape */
734 if (level == 64)
735 break;
736
737 count += run;
738
739 if (count > expected)
740 break;
741
742 coeff = dequant_and_decompand(level, s->quantisation, 0);
743 for (i = 0; i < run; i++)
744 *coeff_data++ = coeff;
745 }
746 } else {
747 while (1) {
748 UPDATE_CACHE(re, &s->gb);
749 GET_RL_VLC(level, run, re, &s->gb, s->table_18_rl_vlc,
750 VLC_BITS, 3, 1);
751
752 /* escape */
753 if (level == 255 && run == 2)
754 break;
755
756 count += run;
757
758 if (count > expected)
759 break;
760
761 coeff = dequant_and_decompand(level, s->quantisation, s->codebook);
762 for (i = 0; i < run; i++)
763 *coeff_data++ = coeff;
764 }
765 }
766 CLOSE_READER(re, &s->gb);
767 }
768
769 if (count > expected) {
770 av_log(avctx, AV_LOG_ERROR, "Escape codeword not found, probably corrupt data\n");
771 ret = AVERROR(EINVAL);
772 goto end;
773 }
774 if (s->peak.level)
775 peak_table(coeff_data - count, &s->peak, count);
776 if (s->difference_coding)
777 difference_coding(s->plane[s->channel_num].subband[s->subband_num_actual], highpass_width, highpass_height);
778
779 bytes = FFALIGN(AV_CEIL_RSHIFT(get_bits_count(&s->gb), 3), 4);
780 if (bytes > bytestream2_get_bytes_left(&gb)) {
781 av_log(avctx, AV_LOG_ERROR, "Bitstream overread error\n");
782 ret = AVERROR(EINVAL);
783 goto end;
784 } else
785 bytestream2_seek(&gb, bytes, SEEK_CUR);
786
787 av_log(avctx, AV_LOG_DEBUG, "End subband coeffs %i extra %i\n", count, count - expected);
788 s->codebook = 0;
789
790 /* Copy last line of coefficients if odd height */
791 if (highpass_height & 1) {
792 memcpy(&coeff_data[highpass_height * highpass_stride],
793 &coeff_data[(highpass_height - 1) * highpass_stride],
794 highpass_stride * sizeof(*coeff_data));
795 }
796 }
797 }
798
799 if (!s->a_width || !s->a_height || s->a_format == AV_PIX_FMT_NONE ||
800 s->coded_width || s->coded_height || s->coded_format != AV_PIX_FMT_NONE) {
801 av_log(avctx, AV_LOG_ERROR, "Invalid dimensions\n");
802 ret = AVERROR(EINVAL);
803 goto end;
804 }
805
806 if (!got_buffer) {
807 av_log(avctx, AV_LOG_ERROR, "No end of header tag found\n");
808 ret = AVERROR(EINVAL);
809 goto end;
810 }
811
812 planes = av_pix_fmt_count_planes(avctx->pix_fmt);
813 if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16) {
814 if (!s->progressive)
815 return AVERROR_INVALIDDATA;
816 planes = 4;
817 }
818
819 for (plane = 0; plane < planes && !ret; plane++) {
820 /* level 1 */
821 int lowpass_height = s->plane[plane].band[0][0].height;
822 int lowpass_width = s->plane[plane].band[0][0].width;
823 int highpass_stride = s->plane[plane].band[0][1].stride;
824 int act_plane = plane == 1 ? 2 : plane == 2 ? 1 : plane;
825 ptrdiff_t dst_linesize;
826 int16_t *low, *high, *output, *dst;
827
828 if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16) {
829 act_plane = 0;
830 dst_linesize = pic->linesize[act_plane];
831 } else {
832 dst_linesize = pic->linesize[act_plane] / 2;
833 }
834
835 if (lowpass_height > s->plane[plane].band[0][0].a_height || lowpass_width > s->plane[plane].band[0][0].a_width ||
836 !highpass_stride || s->plane[plane].band[0][1].width > s->plane[plane].band[0][1].a_width) {
837 av_log(avctx, AV_LOG_ERROR, "Invalid plane dimensions\n");
838 ret = AVERROR(EINVAL);
839 goto end;
840 }
841
842 av_log(avctx, AV_LOG_DEBUG, "Decoding level 1 plane %i %i %i %i\n", plane, lowpass_height, lowpass_width, highpass_stride);
843
844 low = s->plane[plane].subband[0];
845 high = s->plane[plane].subband[2];
846 output = s->plane[plane].l_h[0];
847 for (i = 0; i < lowpass_width; i++) {
848 vert_filter(output, lowpass_width, low, lowpass_width, high, highpass_stride, lowpass_height);
849 low++;
850 high++;
851 output++;
852 }
853
854 low = s->plane[plane].subband[1];
855 high = s->plane[plane].subband[3];
856 output = s->plane[plane].l_h[1];
857
858 for (i = 0; i < lowpass_width; i++) {
859 // note the stride of "low" is highpass_stride
860 vert_filter(output, lowpass_width, low, highpass_stride, high, highpass_stride, lowpass_height);
861 low++;
862 high++;
863 output++;
864 }
865
866 low = s->plane[plane].l_h[0];
867 high = s->plane[plane].l_h[1];
868 output = s->plane[plane].subband[0];
869 for (i = 0; i < lowpass_height * 2; i++) {
870 horiz_filter(output, low, high, lowpass_width);
871 low += lowpass_width;
872 high += lowpass_width;
873 output += lowpass_width * 2;
874 }
875 if (s->bpc == 12) {
876 output = s->plane[plane].subband[0];
877 for (i = 0; i < lowpass_height * 2; i++) {
878 for (j = 0; j < lowpass_width * 2; j++)
879 output[j] *= 4;
880
881 output += lowpass_width * 2;
882 }
883 }
884
885 /* level 2 */
886 lowpass_height = s->plane[plane].band[1][1].height;
887 lowpass_width = s->plane[plane].band[1][1].width;
888 highpass_stride = s->plane[plane].band[1][1].stride;
889
890 if (lowpass_height > s->plane[plane].band[1][1].a_height || lowpass_width > s->plane[plane].band[1][1].a_width ||
891 !highpass_stride || s->plane[plane].band[1][1].width > s->plane[plane].band[1][1].a_width) {
892 av_log(avctx, AV_LOG_ERROR, "Invalid plane dimensions\n");
893 ret = AVERROR(EINVAL);
894 goto end;
895 }
896
897 av_log(avctx, AV_LOG_DEBUG, "Level 2 plane %i %i %i %i\n", plane, lowpass_height, lowpass_width, highpass_stride);
898
899 low = s->plane[plane].subband[0];
900 high = s->plane[plane].subband[5];
901 output = s->plane[plane].l_h[3];
902 for (i = 0; i < lowpass_width; i++) {
903 vert_filter(output, lowpass_width, low, lowpass_width, high, highpass_stride, lowpass_height);
904 low++;
905 high++;
906 output++;
907 }
908
909 low = s->plane[plane].subband[4];
910 high = s->plane[plane].subband[6];
911 output = s->plane[plane].l_h[4];
912 for (i = 0; i < lowpass_width; i++) {
913 vert_filter(output, lowpass_width, low, highpass_stride, high, highpass_stride, lowpass_height);
914 low++;
915 high++;
916 output++;
917 }
918
919 low = s->plane[plane].l_h[3];
920 high = s->plane[plane].l_h[4];
921 output = s->plane[plane].subband[0];
922 for (i = 0; i < lowpass_height * 2; i++) {
923 horiz_filter(output, low, high, lowpass_width);
924 low += lowpass_width;
925 high += lowpass_width;
926 output += lowpass_width * 2;
927 }
928
929 output = s->plane[plane].subband[0];
930 for (i = 0; i < lowpass_height * 2; i++) {
931 for (j = 0; j < lowpass_width * 2; j++)
932 output[j] *= 4;
933
934 output += lowpass_width * 2;
935 }
936
937 /* level 3 */
938 lowpass_height = s->plane[plane].band[2][1].height;
939 lowpass_width = s->plane[plane].band[2][1].width;
940 highpass_stride = s->plane[plane].band[2][1].stride;
941
942 if (lowpass_height > s->plane[plane].band[2][1].a_height || lowpass_width > s->plane[plane].band[2][1].a_width ||
943 !highpass_stride || s->plane[plane].band[2][1].width > s->plane[plane].band[2][1].a_width) {
944 av_log(avctx, AV_LOG_ERROR, "Invalid plane dimensions\n");
945 ret = AVERROR(EINVAL);
946 goto end;
947 }
948
949 av_log(avctx, AV_LOG_DEBUG, "Level 3 plane %i %i %i %i\n", plane, lowpass_height, lowpass_width, highpass_stride);
950 if (s->progressive) {
951 low = s->plane[plane].subband[0];
952 high = s->plane[plane].subband[8];
953 output = s->plane[plane].l_h[6];
954 for (i = 0; i < lowpass_width; i++) {
955 vert_filter(output, lowpass_width, low, lowpass_width, high, highpass_stride, lowpass_height);
956 low++;
957 high++;
958 output++;
959 }
960
961 low = s->plane[plane].subband[7];
962 high = s->plane[plane].subband[9];
963 output = s->plane[plane].l_h[7];
964 for (i = 0; i < lowpass_width; i++) {
965 vert_filter(output, lowpass_width, low, highpass_stride, high, highpass_stride, lowpass_height);
966 low++;
967 high++;
968 output++;
969 }
970
971 dst = (int16_t *)pic->data[act_plane];
972 if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16) {
973 if (plane & 1)
974 dst++;
975 if (plane > 1)
976 dst += pic->linesize[act_plane] >> 1;
977 }
978 low = s->plane[plane].l_h[6];
979 high = s->plane[plane].l_h[7];
980
981 if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16 &&
982 (lowpass_height * 2 > avctx->coded_height / 2 ||
983 lowpass_width * 2 > avctx->coded_width / 2 )
984 ) {
985 ret = AVERROR_INVALIDDATA;
986 goto end;
987 }
988
989 for (i = 0; i < lowpass_height * 2; i++) {
990 if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16)
991 horiz_filter_clip_bayer(dst, low, high, lowpass_width, s->bpc);
992 else
993 horiz_filter_clip(dst, low, high, lowpass_width, s->bpc);
994 if (avctx->pix_fmt == AV_PIX_FMT_GBRAP12 && act_plane == 3)
995 process_alpha(dst, lowpass_width * 2);
996 low += lowpass_width;
997 high += lowpass_width;
998 dst += dst_linesize;
999 }
1000 } else {
1001 av_log(avctx, AV_LOG_DEBUG, "interlaced frame ? %d", pic->interlaced_frame);
1002 pic->interlaced_frame = 1;
1003 low = s->plane[plane].subband[0];
1004 high = s->plane[plane].subband[7];
1005 output = s->plane[plane].l_h[6];
1006 for (i = 0; i < lowpass_height; i++) {
1007 horiz_filter(output, low, high, lowpass_width);
1008 low += lowpass_width;
1009 high += lowpass_width;
1010 output += lowpass_width * 2;
1011 }
1012
1013 low = s->plane[plane].subband[8];
1014 high = s->plane[plane].subband[9];
1015 output = s->plane[plane].l_h[7];
1016 for (i = 0; i < lowpass_height; i++) {
1017 horiz_filter(output, low, high, lowpass_width);
1018 low += lowpass_width;
1019 high += lowpass_width;
1020 output += lowpass_width * 2;
1021 }
1022
1023 dst = (int16_t *)pic->data[act_plane];
1024 low = s->plane[plane].l_h[6];
1025 high = s->plane[plane].l_h[7];
1026 for (i = 0; i < lowpass_height; i++) {
1027 interlaced_vertical_filter(dst, low, high, lowpass_width * 2, pic->linesize[act_plane]/2, act_plane);
1028 low += lowpass_width * 2;
1029 high += lowpass_width * 2;
1030 dst += pic->linesize[act_plane];
1031 }
1032 }
1033 }
1034
1035
1036 if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16)
1037 process_bayer(pic);
1038 end:
1039 if (ret < 0)
1040 return ret;
1041
1042 *got_frame = 1;
1043 return avpkt->size;
1044 }
1045
cfhd_close(AVCodecContext * avctx)1046 static av_cold int cfhd_close(AVCodecContext *avctx)
1047 {
1048 CFHDContext *s = avctx->priv_data;
1049
1050 free_buffers(s);
1051
1052 ff_free_vlc(&s->vlc_9);
1053 ff_free_vlc(&s->vlc_18);
1054
1055 return 0;
1056 }
1057
1058 AVCodec ff_cfhd_decoder = {
1059 .name = "cfhd",
1060 .long_name = NULL_IF_CONFIG_SMALL("Cineform HD"),
1061 .type = AVMEDIA_TYPE_VIDEO,
1062 .id = AV_CODEC_ID_CFHD,
1063 .priv_data_size = sizeof(CFHDContext),
1064 .init = cfhd_init,
1065 .close = cfhd_close,
1066 .decode = cfhd_decode,
1067 .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS,
1068 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,
1069 };
1070