2 * Copyright (c) 2015-2016 Kieran Kunhya <kieran@kunhya.com>
4 * This file is part of FFmpeg.
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.
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.
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
23 * Cineform HD video decoder
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"
34 #include "bytestream.h"
40 #define ALPHA_COMPAND_DC_OFFSET 256
41 #define ALPHA_COMPAND_GAIN 9400
48 LowpassPrecision = 35,
53 BitsPerComponent = 101,
61 static av_cold int cfhd_init(AVCodecContext *avctx)
63 CFHDContext *s = avctx->priv_data;
65 avctx->bits_per_raw_sample = 10;
68 return ff_cfhd_init_vlcs(s);
71 static void init_plane_defaults(CFHDContext *s)
75 s->subband_num_actual = 0;
78 static void init_peak_table_defaults(CFHDContext *s)
82 memset(&s->peak.base, 0, sizeof(s->peak.base));
85 static void init_frame_defaults(CFHDContext *s)
89 s->cropped_height = 0;
92 s->subband_cnt = SUBBAND_COUNT;
94 s->lowpass_precision = 16;
99 s->difference_coding = 0;
101 init_plane_defaults(s);
102 init_peak_table_defaults(s);
105 /* TODO: merge with VLC tables or use LUT */
106 static inline int dequant_and_decompand(int level, int quantisation, int codebook)
108 if (codebook == 0 || codebook == 1) {
109 int64_t abslevel = abs(level);
111 return (abslevel + ((768 * abslevel * abslevel * abslevel) / (255 * 255 * 255))) *
112 FFSIGN(level) * quantisation;
114 return level * quantisation;
116 return level * quantisation;
119 static inline void difference_coding(int16_t *band, int width, int height)
123 for (i = 0; i < height; i++) {
124 for (j = 1; j < width; j++) {
125 band[j] += band[j-1];
131 static inline void peak_table(int16_t *band, Peak *peak, int length)
134 for (i = 0; i < length; i++)
135 if (abs(band[i]) > peak->level)
136 band[i] = bytestream2_get_le16(&peak->base);
139 static inline void process_alpha(int16_t *alpha, int width)
142 for (i = 0; i < width; i++) {
144 channel -= ALPHA_COMPAND_DC_OFFSET;
146 channel *= ALPHA_COMPAND_GAIN;
148 channel = av_clip_uintp2(channel, 12);
153 static inline void process_bayer(AVFrame *frame)
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;
162 for (int y = 0; y < frame->height >> 1; y++) {
163 for (int x = 0; x < frame->width; x += 2) {
173 R = (rg - mid) * 2 + g;
176 B = (bg - mid) * 2 + g;
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);
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,
204 for (i = 0; i < len; i++) {
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;
209 output[(2*i+0)*out_stride] = av_clip_uintp2_c(output[(2*i+0)*out_stride], clip);
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;
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;
219 output[(2*i+0)*out_stride] = av_clip_uintp2_c(output[(2*i+0)*out_stride], clip);
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;
224 output[(2*i+1)*out_stride] = av_clip_uintp2_c(output[(2*i+1)*out_stride], clip);
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;
229 output[(2*i+0)*out_stride] = av_clip_uintp2_c(output[(2*i+0)*out_stride], clip);
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;
234 output[(2*i+1)*out_stride] = av_clip_uintp2_c(output[(2*i+1)*out_stride], clip);
239 static inline void interlaced_vertical_filter(int16_t *output, int16_t *low, int16_t *high,
240 int width, int linesize, int plane)
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);
251 static void horiz_filter(int16_t *output, int16_t *low, int16_t *high,
254 filter(output, 1, low, 1, high, 1, width, 0);
257 static void horiz_filter_clip(int16_t *output, int16_t *low, int16_t *high,
260 filter(output, 1, low, 1, high, 1, width, clip);
263 static void horiz_filter_clip_bayer(int16_t *output, int16_t *low, int16_t *high,
266 filter(output, 2, low, 1, high, 1, width, clip);
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)
273 filter(output, out_stride, low, low_stride, high, high_stride, len, 0);
276 static void free_buffers(CFHDContext *s)
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);
284 for (j = 0; j < 9; j++)
285 s->plane[i].subband[j] = NULL;
287 for (j = 0; j < 8; j++)
288 s->plane[i].l_h[j] = NULL;
294 static int alloc_buffers(AVCodecContext *avctx)
296 CFHDContext *s = avctx->priv_data;
297 int i, j, ret, planes;
298 int chroma_x_shift, chroma_y_shift;
301 if (s->coded_format == AV_PIX_FMT_BAYER_RGGB16) {
303 s->coded_height *= 2;
306 if ((ret = ff_set_dimensions(avctx, s->coded_width, s->coded_height)) < 0)
308 avctx->pix_fmt = s->coded_format;
310 if ((ret = av_pix_fmt_get_chroma_sub_sample(s->coded_format,
312 &chroma_y_shift)) < 0)
314 planes = av_pix_fmt_count_planes(s->coded_format);
315 if (s->coded_format == AV_PIX_FMT_BAYER_RGGB16) {
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;
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;
332 w8 = FFALIGN(s->plane[i].width / 8, 8);
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);
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;
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;
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;
375 s->a_height = s->coded_height;
376 s->a_width = s->coded_width;
377 s->a_format = s->coded_format;
382 static int cfhd_decode(AVCodecContext *avctx, void *data, int *got_frame,
385 CFHDContext *s = avctx->priv_data;
387 ThreadFrame frame = { .f = data };
389 int ret = 0, i, j, planes, plane, got_buffer = 0;
392 s->coded_format = AV_PIX_FMT_YUV422P10;
393 init_frame_defaults(s);
394 planes = av_pix_fmt_count_planes(s->coded_format);
396 bytestream2_init(&gb, avpkt->data, avpkt->size);
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);
425 } else if (tag == ChannelCount) {
426 av_log(avctx, AV_LOG_DEBUG, "Channel Count: %"PRIu16"\n", data);
427 s->channel_cnt = data;
429 av_log(avctx, AV_LOG_ERROR, "Channel Count of %"PRIu16" is unsupported\n", data);
430 ret = AVERROR_PATCHWELCOME;
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;
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);
448 init_plane_defaults(s);
449 } else if (tag == SubbandNumber) {
450 if (s->subband_num != 0 && data == 1) // hack
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);
459 if (s->subband_num > 3) {
460 av_log(avctx, AV_LOG_ERROR, "Invalid subband number\n");
461 ret = AVERROR(EINVAL);
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);
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);
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);
498 s->plane[s->channel_num].band[0][0].height = data;
500 av_log(avctx, AV_LOG_DEBUG, "Sample type? %"PRIu16"\n", data);
501 else if (tag == 10) {
503 avpriv_report_missing_feature(avctx, "Transform type of %"PRIu16, data);
504 ret = AVERROR_PATCHWELCOME;
507 av_log(avctx, AV_LOG_DEBUG, "Transform-type? %"PRIu16"\n", data);
508 } else if (abstag >= 0x4000 && abstag <= 0x40ff) {
509 if (abstag == 0x4001)
511 av_log(avctx, AV_LOG_DEBUG, "Small chunk length %d %s\n", data * 4, tag < 0 ? "optional" : "required");
512 bytestream2_skipu(&gb, data * 4);
513 } else if (tag == 23) {
514 av_log(avctx, AV_LOG_DEBUG, "Skip frame\n");
515 avpriv_report_missing_feature(avctx, "Skip frame");
516 ret = AVERROR_PATCHWELCOME;
518 } else if (tag == 2) {
519 av_log(avctx, AV_LOG_DEBUG, "tag=2 header - skipping %i tag/value pairs\n", data);
520 if (data > bytestream2_get_bytes_left(&gb) / 4) {
521 av_log(avctx, AV_LOG_ERROR, "too many tag/value pairs (%d)\n", data);
522 ret = AVERROR_INVALIDDATA;
525 for (i = 0; i < data; i++) {
526 uint16_t tag2 = bytestream2_get_be16(&gb);
527 uint16_t val2 = bytestream2_get_be16(&gb);
528 av_log(avctx, AV_LOG_DEBUG, "Tag/Value = %x %x\n", tag2, val2);
530 } else if (tag == 41) {
531 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);
533 av_log(avctx, AV_LOG_ERROR, "Invalid highpass width\n");
534 ret = AVERROR(EINVAL);
537 s->plane[s->channel_num].band[s->level][s->subband_num].width = data;
538 s->plane[s->channel_num].band[s->level][s->subband_num].stride = FFALIGN(data, 8);
539 } else if (tag == 42) {
540 av_log(avctx, AV_LOG_DEBUG, "Highpass height %i\n", data);
542 av_log(avctx, AV_LOG_ERROR, "Invalid highpass height\n");
543 ret = AVERROR(EINVAL);
546 s->plane[s->channel_num].band[s->level][s->subband_num].height = data;
547 } else if (tag == 49) {
548 av_log(avctx, AV_LOG_DEBUG, "Highpass width2 %i\n", data);
550 av_log(avctx, AV_LOG_ERROR, "Invalid highpass width2\n");
551 ret = AVERROR(EINVAL);
554 s->plane[s->channel_num].band[s->level][s->subband_num].width = data;
555 s->plane[s->channel_num].band[s->level][s->subband_num].stride = FFALIGN(data, 8);
556 } else if (tag == 50) {
557 av_log(avctx, AV_LOG_DEBUG, "Highpass height2 %i\n", data);
559 av_log(avctx, AV_LOG_ERROR, "Invalid highpass height2\n");
560 ret = AVERROR(EINVAL);
563 s->plane[s->channel_num].band[s->level][s->subband_num].height = data;
564 } else if (tag == 71) {
566 av_log(avctx, AV_LOG_DEBUG, "Codebook %i\n", s->codebook);
567 } else if (tag == 72) {
568 s->codebook = data & 0xf;
569 s->difference_coding = (data >> 4) & 1;
570 av_log(avctx, AV_LOG_DEBUG, "Other codebook? %i\n", s->codebook);
571 } else if (tag == 70) {
572 av_log(avctx, AV_LOG_DEBUG, "Subsampling or bit-depth flag? %i\n", data);
573 if (!(data == 10 || data == 12)) {
574 av_log(avctx, AV_LOG_ERROR, "Invalid bits per channel\n");
575 ret = AVERROR(EINVAL);
579 } else if (tag == 84) {
580 av_log(avctx, AV_LOG_DEBUG, "Sample format? %i\n", data);
582 s->coded_format = AV_PIX_FMT_YUV422P10;
583 } else if (data == 2) {
584 s->coded_format = AV_PIX_FMT_BAYER_RGGB16;
585 } else if (data == 3) {
586 s->coded_format = AV_PIX_FMT_GBRP12;
587 } else if (data == 4) {
588 s->coded_format = AV_PIX_FMT_GBRAP12;
590 avpriv_report_missing_feature(avctx, "Sample format of %"PRIu16, data);
591 ret = AVERROR_PATCHWELCOME;
594 planes = data == 2 ? 4 : av_pix_fmt_count_planes(s->coded_format);
595 } else if (tag == -85) {
596 av_log(avctx, AV_LOG_DEBUG, "Cropped height %"PRIu16"\n", data);
597 s->cropped_height = data;
598 } else if (tag == -75) {
599 s->peak.offset &= ~0xffff;
600 s->peak.offset |= (data & 0xffff);
603 } else if (tag == -76) {
604 s->peak.offset &= 0xffff;
605 s->peak.offset |= (data & 0xffffU)<<16;
608 } else if (tag == -74 && s->peak.offset) {
609 s->peak.level = data;
610 bytestream2_seek(&s->peak.base, s->peak.offset - 4, SEEK_CUR);
612 av_log(avctx, AV_LOG_DEBUG, "Unknown tag %i data %x\n", tag, data);
614 /* Some kind of end of header tag */
615 if (tag == 4 && data == 0x1a4a && s->coded_width && s->coded_height &&
616 s->coded_format != AV_PIX_FMT_NONE) {
617 if (s->a_width != s->coded_width || s->a_height != s->coded_height ||
618 s->a_format != s->coded_format) {
620 if ((ret = alloc_buffers(avctx)) < 0) {
625 ret = ff_set_dimensions(avctx, s->coded_width, s->coded_height);
628 if (s->cropped_height) {
629 unsigned height = s->cropped_height << (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16);
630 if (avctx->height < height)
631 return AVERROR_INVALIDDATA;
632 avctx->height = height;
637 if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0)
642 s->coded_format = AV_PIX_FMT_NONE;
645 coeff_data = s->plane[s->channel_num].subband[s->subband_num_actual];
647 /* Lowpass coefficients */
648 if (tag == 4 && data == 0xf0f && s->a_width && s->a_height) {
649 int lowpass_height = s->plane[s->channel_num].band[0][0].height;
650 int lowpass_width = s->plane[s->channel_num].band[0][0].width;
651 int lowpass_a_height = s->plane[s->channel_num].band[0][0].a_height;
652 int lowpass_a_width = s->plane[s->channel_num].band[0][0].a_width;
655 av_log(avctx, AV_LOG_ERROR, "No end of header tag found\n");
656 ret = AVERROR(EINVAL);
660 if (lowpass_height > lowpass_a_height || lowpass_width > lowpass_a_width ||
661 lowpass_a_width * lowpass_a_height * sizeof(int16_t) > bytestream2_get_bytes_left(&gb)) {
662 av_log(avctx, AV_LOG_ERROR, "Too many lowpass coefficients\n");
663 ret = AVERROR(EINVAL);
667 av_log(avctx, AV_LOG_DEBUG, "Start of lowpass coeffs component %d height:%d, width:%d\n", s->channel_num, lowpass_height, lowpass_width);
668 for (i = 0; i < lowpass_height; i++) {
669 for (j = 0; j < lowpass_width; j++)
670 coeff_data[j] = bytestream2_get_be16u(&gb);
672 coeff_data += lowpass_width;
675 /* Align to mod-4 position to continue reading tags */
676 bytestream2_seek(&gb, bytestream2_tell(&gb) & 3, SEEK_CUR);
678 /* Copy last line of coefficients if odd height */
679 if (lowpass_height & 1) {
680 memcpy(&coeff_data[lowpass_height * lowpass_width],
681 &coeff_data[(lowpass_height - 1) * lowpass_width],
682 lowpass_width * sizeof(*coeff_data));
685 av_log(avctx, AV_LOG_DEBUG, "Lowpass coefficients %d\n", lowpass_width * lowpass_height);
688 if (tag == 55 && s->subband_num_actual != 255 && s->a_width && s->a_height) {
689 int highpass_height = s->plane[s->channel_num].band[s->level][s->subband_num].height;
690 int highpass_width = s->plane[s->channel_num].band[s->level][s->subband_num].width;
691 int highpass_a_width = s->plane[s->channel_num].band[s->level][s->subband_num].a_width;
692 int highpass_a_height = s->plane[s->channel_num].band[s->level][s->subband_num].a_height;
693 int highpass_stride = s->plane[s->channel_num].band[s->level][s->subband_num].stride;
695 int a_expected = highpass_a_height * highpass_a_width;
696 int level, run, coeff;
697 int count = 0, bytes;
700 av_log(avctx, AV_LOG_ERROR, "No end of header tag found\n");
701 ret = AVERROR(EINVAL);
705 if (highpass_height > highpass_a_height || highpass_width > highpass_a_width || a_expected < highpass_height * (uint64_t)highpass_stride) {
706 av_log(avctx, AV_LOG_ERROR, "Too many highpass coefficients\n");
707 ret = AVERROR(EINVAL);
710 expected = highpass_height * highpass_stride;
712 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);
714 init_get_bits(&s->gb, gb.buffer, bytestream2_get_bytes_left(&gb) * 8);
716 OPEN_READER(re, &s->gb);
719 UPDATE_CACHE(re, &s->gb);
720 GET_RL_VLC(level, run, re, &s->gb, s->table_9_rl_vlc,
729 if (count > expected)
732 coeff = dequant_and_decompand(level, s->quantisation, 0);
733 for (i = 0; i < run; i++)
734 *coeff_data++ = coeff;
738 UPDATE_CACHE(re, &s->gb);
739 GET_RL_VLC(level, run, re, &s->gb, s->table_18_rl_vlc,
743 if (level == 255 && run == 2)
748 if (count > expected)
751 coeff = dequant_and_decompand(level, s->quantisation, s->codebook);
752 for (i = 0; i < run; i++)
753 *coeff_data++ = coeff;
756 CLOSE_READER(re, &s->gb);
759 if (count > expected) {
760 av_log(avctx, AV_LOG_ERROR, "Escape codeword not found, probably corrupt data\n");
761 ret = AVERROR(EINVAL);
765 peak_table(coeff_data - count, &s->peak, count);
766 if (s->difference_coding)
767 difference_coding(s->plane[s->channel_num].subband[s->subband_num_actual], highpass_width, highpass_height);
769 bytes = FFALIGN(AV_CEIL_RSHIFT(get_bits_count(&s->gb), 3), 4);
770 if (bytes > bytestream2_get_bytes_left(&gb)) {
771 av_log(avctx, AV_LOG_ERROR, "Bitstream overread error\n");
772 ret = AVERROR(EINVAL);
775 bytestream2_seek(&gb, bytes, SEEK_CUR);
777 av_log(avctx, AV_LOG_DEBUG, "End subband coeffs %i extra %i\n", count, count - expected);
780 /* Copy last line of coefficients if odd height */
781 if (highpass_height & 1) {
782 memcpy(&coeff_data[highpass_height * highpass_stride],
783 &coeff_data[(highpass_height - 1) * highpass_stride],
784 highpass_stride * sizeof(*coeff_data));
789 if (!s->a_width || !s->a_height || s->a_format == AV_PIX_FMT_NONE ||
790 s->coded_width || s->coded_height || s->coded_format != AV_PIX_FMT_NONE) {
791 av_log(avctx, AV_LOG_ERROR, "Invalid dimensions\n");
792 ret = AVERROR(EINVAL);
797 av_log(avctx, AV_LOG_ERROR, "No end of header tag found\n");
798 ret = AVERROR(EINVAL);
802 planes = av_pix_fmt_count_planes(avctx->pix_fmt);
803 if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16) {
805 return AVERROR_INVALIDDATA;
809 for (plane = 0; plane < planes && !ret; plane++) {
811 int lowpass_height = s->plane[plane].band[0][0].height;
812 int lowpass_width = s->plane[plane].band[0][0].width;
813 int highpass_stride = s->plane[plane].band[0][1].stride;
814 int act_plane = plane == 1 ? 2 : plane == 2 ? 1 : plane;
815 ptrdiff_t dst_linesize;
816 int16_t *low, *high, *output, *dst;
818 if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16) {
820 dst_linesize = pic->linesize[act_plane];
822 dst_linesize = pic->linesize[act_plane] / 2;
825 if (lowpass_height > s->plane[plane].band[0][0].a_height || lowpass_width > s->plane[plane].band[0][0].a_width ||
826 !highpass_stride || s->plane[plane].band[0][1].width > s->plane[plane].band[0][1].a_width) {
827 av_log(avctx, AV_LOG_ERROR, "Invalid plane dimensions\n");
828 ret = AVERROR(EINVAL);
832 av_log(avctx, AV_LOG_DEBUG, "Decoding level 1 plane %i %i %i %i\n", plane, lowpass_height, lowpass_width, highpass_stride);
834 low = s->plane[plane].subband[0];
835 high = s->plane[plane].subband[2];
836 output = s->plane[plane].l_h[0];
837 for (i = 0; i < lowpass_width; i++) {
838 vert_filter(output, lowpass_width, low, lowpass_width, high, highpass_stride, lowpass_height);
844 low = s->plane[plane].subband[1];
845 high = s->plane[plane].subband[3];
846 output = s->plane[plane].l_h[1];
848 for (i = 0; i < lowpass_width; i++) {
849 // note the stride of "low" is highpass_stride
850 vert_filter(output, lowpass_width, low, highpass_stride, high, highpass_stride, lowpass_height);
856 low = s->plane[plane].l_h[0];
857 high = s->plane[plane].l_h[1];
858 output = s->plane[plane].subband[0];
859 for (i = 0; i < lowpass_height * 2; i++) {
860 horiz_filter(output, low, high, lowpass_width);
861 low += lowpass_width;
862 high += lowpass_width;
863 output += lowpass_width * 2;
866 output = s->plane[plane].subband[0];
867 for (i = 0; i < lowpass_height * 2; i++) {
868 for (j = 0; j < lowpass_width * 2; j++)
871 output += lowpass_width * 2;
876 lowpass_height = s->plane[plane].band[1][1].height;
877 lowpass_width = s->plane[plane].band[1][1].width;
878 highpass_stride = s->plane[plane].band[1][1].stride;
880 if (lowpass_height > s->plane[plane].band[1][1].a_height || lowpass_width > s->plane[plane].band[1][1].a_width ||
881 !highpass_stride || s->plane[plane].band[1][1].width > s->plane[plane].band[1][1].a_width) {
882 av_log(avctx, AV_LOG_ERROR, "Invalid plane dimensions\n");
883 ret = AVERROR(EINVAL);
887 av_log(avctx, AV_LOG_DEBUG, "Level 2 plane %i %i %i %i\n", plane, lowpass_height, lowpass_width, highpass_stride);
889 low = s->plane[plane].subband[0];
890 high = s->plane[plane].subband[5];
891 output = s->plane[plane].l_h[3];
892 for (i = 0; i < lowpass_width; i++) {
893 vert_filter(output, lowpass_width, low, lowpass_width, high, highpass_stride, lowpass_height);
899 low = s->plane[plane].subband[4];
900 high = s->plane[plane].subband[6];
901 output = s->plane[plane].l_h[4];
902 for (i = 0; i < lowpass_width; i++) {
903 vert_filter(output, lowpass_width, low, highpass_stride, high, highpass_stride, lowpass_height);
909 low = s->plane[plane].l_h[3];
910 high = s->plane[plane].l_h[4];
911 output = s->plane[plane].subband[0];
912 for (i = 0; i < lowpass_height * 2; i++) {
913 horiz_filter(output, low, high, lowpass_width);
914 low += lowpass_width;
915 high += lowpass_width;
916 output += lowpass_width * 2;
919 output = s->plane[plane].subband[0];
920 for (i = 0; i < lowpass_height * 2; i++) {
921 for (j = 0; j < lowpass_width * 2; j++)
924 output += lowpass_width * 2;
928 lowpass_height = s->plane[plane].band[2][1].height;
929 lowpass_width = s->plane[plane].band[2][1].width;
930 highpass_stride = s->plane[plane].band[2][1].stride;
932 if (lowpass_height > s->plane[plane].band[2][1].a_height || lowpass_width > s->plane[plane].band[2][1].a_width ||
933 !highpass_stride || s->plane[plane].band[2][1].width > s->plane[plane].band[2][1].a_width) {
934 av_log(avctx, AV_LOG_ERROR, "Invalid plane dimensions\n");
935 ret = AVERROR(EINVAL);
939 av_log(avctx, AV_LOG_DEBUG, "Level 3 plane %i %i %i %i\n", plane, lowpass_height, lowpass_width, highpass_stride);
940 if (s->progressive) {
941 low = s->plane[plane].subband[0];
942 high = s->plane[plane].subband[8];
943 output = s->plane[plane].l_h[6];
944 for (i = 0; i < lowpass_width; i++) {
945 vert_filter(output, lowpass_width, low, lowpass_width, high, highpass_stride, lowpass_height);
951 low = s->plane[plane].subband[7];
952 high = s->plane[plane].subband[9];
953 output = s->plane[plane].l_h[7];
954 for (i = 0; i < lowpass_width; i++) {
955 vert_filter(output, lowpass_width, low, highpass_stride, high, highpass_stride, lowpass_height);
961 dst = (int16_t *)pic->data[act_plane];
962 if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16) {
966 dst += pic->linesize[act_plane] >> 1;
968 low = s->plane[plane].l_h[6];
969 high = s->plane[plane].l_h[7];
971 if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16 &&
972 (lowpass_height * 2 > avctx->coded_height / 2 ||
973 lowpass_width * 2 > avctx->coded_width / 2 )
975 ret = AVERROR_INVALIDDATA;
979 for (i = 0; i < lowpass_height * 2; i++) {
980 if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16)
981 horiz_filter_clip_bayer(dst, low, high, lowpass_width, s->bpc);
983 horiz_filter_clip(dst, low, high, lowpass_width, s->bpc);
984 if (avctx->pix_fmt == AV_PIX_FMT_GBRAP12 && act_plane == 3)
985 process_alpha(dst, lowpass_width * 2);
986 low += lowpass_width;
987 high += lowpass_width;
991 av_log(avctx, AV_LOG_DEBUG, "interlaced frame ? %d", pic->interlaced_frame);
992 pic->interlaced_frame = 1;
993 low = s->plane[plane].subband[0];
994 high = s->plane[plane].subband[7];
995 output = s->plane[plane].l_h[6];
996 for (i = 0; i < lowpass_height; i++) {
997 horiz_filter(output, low, high, lowpass_width);
998 low += lowpass_width;
999 high += lowpass_width;
1000 output += lowpass_width * 2;
1003 low = s->plane[plane].subband[8];
1004 high = s->plane[plane].subband[9];
1005 output = s->plane[plane].l_h[7];
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;
1013 dst = (int16_t *)pic->data[act_plane];
1014 low = s->plane[plane].l_h[6];
1015 high = s->plane[plane].l_h[7];
1016 for (i = 0; i < lowpass_height; i++) {
1017 interlaced_vertical_filter(dst, low, high, lowpass_width * 2, pic->linesize[act_plane]/2, act_plane);
1018 low += lowpass_width * 2;
1019 high += lowpass_width * 2;
1020 dst += pic->linesize[act_plane];
1026 if (avctx->pix_fmt == AV_PIX_FMT_BAYER_RGGB16)
1036 static av_cold int cfhd_close(AVCodecContext *avctx)
1038 CFHDContext *s = avctx->priv_data;
1042 ff_free_vlc(&s->vlc_9);
1043 ff_free_vlc(&s->vlc_18);
1048 AVCodec ff_cfhd_decoder = {
1050 .long_name = NULL_IF_CONFIG_SMALL("Cineform HD"),
1051 .type = AVMEDIA_TYPE_VIDEO,
1052 .id = AV_CODEC_ID_CFHD,
1053 .priv_data_size = sizeof(CFHDContext),
1055 .close = cfhd_close,
1056 .decode = cfhd_decode,
1057 .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS,
1058 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,