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dxtory.c
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1 /*
2  * Dxtory decoder
3  *
4  * Copyright (c) 2011 Konstantin Shishkov
5  *
6  * This file is part of FFmpeg.
7  *
8  * FFmpeg is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Lesser General Public
10  * License as published by the Free Software Foundation; either
11  * version 2.1 of the License, or (at your option) any later version.
12  *
13  * FFmpeg is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16  * Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public
19  * License along with FFmpeg; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21  */
22 
23 #include <inttypes.h>
24 
25 #define BITSTREAM_READER_LE
26 #include "avcodec.h"
27 #include "bytestream.h"
28 #include "get_bits.h"
29 #include "internal.h"
30 #include "unary.h"
31 #include "libavutil/common.h"
32 #include "libavutil/intreadwrite.h"
33 
35  const uint8_t *src, int src_size,
36  int id, int bpp)
37 {
38  int h;
39  uint8_t *dst;
40  int ret;
41 
42  if (src_size < avctx->width * avctx->height * (int64_t)bpp) {
43  av_log(avctx, AV_LOG_ERROR, "packet too small\n");
44  return AVERROR_INVALIDDATA;
45  }
46 
47  avctx->pix_fmt = id;
48  if ((ret = ff_get_buffer(avctx, pic, 0)) < 0)
49  return ret;
50 
51  dst = pic->data[0];
52  for (h = 0; h < avctx->height; h++) {
53  memcpy(dst, src, avctx->width * bpp);
54  src += avctx->width * bpp;
55  dst += pic->linesize[0];
56  }
57 
58  return 0;
59 }
60 
62  const uint8_t *src, int src_size)
63 {
64  int h, w;
65  uint8_t *Y1, *Y2, *Y3, *Y4, *U, *V;
66  int ret;
67 
68  if (src_size < FFALIGN(avctx->width, 4) * FFALIGN(avctx->height, 4) * 9LL / 8) {
69  av_log(avctx, AV_LOG_ERROR, "packet too small\n");
70  return AVERROR_INVALIDDATA;
71  }
72 
73  avctx->pix_fmt = AV_PIX_FMT_YUV410P;
74  if ((ret = ff_get_buffer(avctx, pic, 0)) < 0)
75  return ret;
76 
77  Y1 = pic->data[0];
78  Y2 = pic->data[0] + pic->linesize[0];
79  Y3 = pic->data[0] + pic->linesize[0] * 2;
80  Y4 = pic->data[0] + pic->linesize[0] * 3;
81  U = pic->data[1];
82  V = pic->data[2];
83  for (h = 0; h < avctx->height; h += 4) {
84  for (w = 0; w < avctx->width; w += 4) {
85  AV_COPY32U(Y1 + w, src);
86  AV_COPY32U(Y2 + w, src + 4);
87  AV_COPY32U(Y3 + w, src + 8);
88  AV_COPY32U(Y4 + w, src + 12);
89  U[w >> 2] = src[16] + 0x80;
90  V[w >> 2] = src[17] + 0x80;
91  src += 18;
92  }
93  Y1 += pic->linesize[0] << 2;
94  Y2 += pic->linesize[0] << 2;
95  Y3 += pic->linesize[0] << 2;
96  Y4 += pic->linesize[0] << 2;
97  U += pic->linesize[1];
98  V += pic->linesize[2];
99  }
100 
101  return 0;
102 }
103 
105  const uint8_t *src, int src_size)
106 {
107  int h, w;
108  uint8_t *Y1, *Y2, *U, *V;
109  int ret;
110 
111  if (src_size < FFALIGN(avctx->width, 2) * FFALIGN(avctx->height, 2) * 3LL / 2) {
112  av_log(avctx, AV_LOG_ERROR, "packet too small\n");
113  return AVERROR_INVALIDDATA;
114  }
115 
116  avctx->pix_fmt = AV_PIX_FMT_YUV420P;
117  if ((ret = ff_get_buffer(avctx, pic, 0)) < 0)
118  return ret;
119 
120  Y1 = pic->data[0];
121  Y2 = pic->data[0] + pic->linesize[0];
122  U = pic->data[1];
123  V = pic->data[2];
124  for (h = 0; h < avctx->height; h += 2) {
125  for (w = 0; w < avctx->width; w += 2) {
126  AV_COPY16(Y1 + w, src);
127  AV_COPY16(Y2 + w, src + 2);
128  U[w >> 1] = src[4] + 0x80;
129  V[w >> 1] = src[5] + 0x80;
130  src += 6;
131  }
132  Y1 += pic->linesize[0] << 1;
133  Y2 += pic->linesize[0] << 1;
134  U += pic->linesize[1];
135  V += pic->linesize[2];
136  }
137 
138  return 0;
139 }
140 
142  const uint8_t *src, int src_size)
143 {
144  int h, w;
145  uint8_t *Y, *U, *V;
146  int ret;
147 
148  if (src_size < avctx->width * avctx->height * 3LL) {
149  av_log(avctx, AV_LOG_ERROR, "packet too small\n");
150  return AVERROR_INVALIDDATA;
151  }
152 
153  avctx->pix_fmt = AV_PIX_FMT_YUV444P;
154  if ((ret = ff_get_buffer(avctx, pic, 0)) < 0)
155  return ret;
156 
157  Y = pic->data[0];
158  U = pic->data[1];
159  V = pic->data[2];
160  for (h = 0; h < avctx->height; h++) {
161  for (w = 0; w < avctx->width; w++) {
162  Y[w] = *src++;
163  U[w] = *src++ ^ 0x80;
164  V[w] = *src++ ^ 0x80;
165  }
166  Y += pic->linesize[0];
167  U += pic->linesize[1];
168  V += pic->linesize[2];
169  }
170 
171  return 0;
172 }
173 
174 static const uint8_t def_lru[8] = { 0x00, 0x20, 0x40, 0x60, 0x80, 0xA0, 0xC0, 0xFF };
175 static const uint8_t def_lru_555[8] = { 0x00, 0x08, 0x10, 0x18, 0x1F };
176 static const uint8_t def_lru_565[8] = { 0x00, 0x08, 0x10, 0x20, 0x30, 0x3F };
177 
178 static inline uint8_t decode_sym(GetBitContext *gb, uint8_t lru[8])
179 {
180  uint8_t c, val;
181 
182  c = get_unary(gb, 0, 8);
183  if (!c) {
184  val = get_bits(gb, 8);
185  memmove(lru + 1, lru, sizeof(*lru) * (8 - 1));
186  } else {
187  val = lru[c - 1];
188  memmove(lru + 1, lru, sizeof(*lru) * (c - 1));
189  }
190  lru[0] = val;
191 
192  return val;
193 }
194 
196  const uint8_t *src, int src_size,
197  int slice_size, int off)
198 {
199  int cur_slice_size;
200 
201  if (slice_size > src_size - off) {
202  av_log(avctx, AV_LOG_ERROR,
203  "invalid slice size %"PRIu32" (only %"PRIu32" bytes left)\n",
204  slice_size, src_size - off);
205  return AVERROR_INVALIDDATA;
206  }
207  if (slice_size <= 16) {
208  av_log(avctx, AV_LOG_ERROR, "invalid slice size %"PRIu32"\n",
209  slice_size);
210  return AVERROR_INVALIDDATA;
211  }
212 
213  cur_slice_size = AV_RL32(src + off);
214  if (cur_slice_size != slice_size - 16) {
215  av_log(avctx, AV_LOG_ERROR,
216  "Slice sizes mismatch: got %"PRIu32" instead of %"PRIu32"\n",
217  cur_slice_size, slice_size - 16);
218  }
219 
220  return 0;
221 }
222 
223 static int load_buffer(AVCodecContext *avctx,
224  const uint8_t *src, int src_size,
225  GetByteContext *gb,
226  int *nslices, int *off)
227 {
228  bytestream2_init(gb, src, src_size);
229  *nslices = bytestream2_get_le16(gb);
230  *off = FFALIGN(*nslices * 4 + 2, 16);
231  if (src_size < *off) {
232  av_log(avctx, AV_LOG_ERROR, "no slice data\n");
233  return AVERROR_INVALIDDATA;
234  }
235 
236  if (!*nslices) {
237  avpriv_request_sample(avctx, "%d slices for %dx%d", *nslices,
238  avctx->width, avctx->height);
239  return AVERROR_PATCHWELCOME;
240  }
241 
242  return 0;
243 }
244 
245 static inline uint8_t decode_sym_565(GetBitContext *gb, uint8_t lru[8],
246  int bits)
247 {
248  uint8_t c, val;
249 
250  c = get_unary(gb, 0, bits);
251  if (!c) {
252  val = get_bits(gb, bits);
253  memmove(lru + 1, lru, sizeof(*lru) * (6 - 1));
254  } else {
255  val = lru[c - 1];
256  memmove(lru + 1, lru, sizeof(*lru) * (c - 1));
257  }
258  lru[0] = val;
259 
260  return val;
261 }
262 
264  int line, int height, uint8_t lru[3][8]);
265 
266 typedef void (*setup_lru_func)(uint8_t lru[3][8]);
267 
268 static int dxtory_decode_v2(AVCodecContext *avctx, AVFrame *pic,
269  const uint8_t *src, int src_size,
271  setup_lru_func setup_lru,
272  enum AVPixelFormat fmt)
273 {
274  GetByteContext gb;
275  GetBitContext gb2;
276  int nslices, slice, line = 0;
277  uint32_t off, slice_size;
278  uint8_t lru[3][8];
279  int ret;
280 
281  ret = load_buffer(avctx, src, src_size, &gb, &nslices, &off);
282  if (ret < 0)
283  return ret;
284 
285  avctx->pix_fmt = fmt;
286  if ((ret = ff_get_buffer(avctx, pic, 0)) < 0)
287  return ret;
288 
289  for (slice = 0; slice < nslices; slice++) {
290  slice_size = bytestream2_get_le32(&gb);
291 
292  setup_lru(lru);
293 
294  ret = check_slice_size(avctx, src, src_size, slice_size, off);
295  if (ret < 0)
296  return ret;
297 
298  if ((ret = init_get_bits8(&gb2, src + off + 16, slice_size - 16)) < 0)
299  return ret;
300 
301  line += decode_slice(&gb2, pic, line, avctx->height - line, lru);
302 
303  off += slice_size;
304  }
305 
306  if (avctx->height - line) {
307  av_log(avctx, AV_LOG_VERBOSE,
308  "Not enough slice data available, "
309  "cropping the frame by %d pixels\n",
310  avctx->height - line);
311  avctx->height = line;
312  }
313 
314  return 0;
315 }
316 
319  int line, int left, uint8_t lru[3][8],
320  int is_565)
321 {
322  int x, y;
323  int r, g, b;
324  int width = frame->width;
325  int stride = frame->linesize[0];
326  uint8_t *dst = frame->data[0] + stride * line;
327 
328  for (y = 0; y < left && get_bits_left(gb) > 16; y++) {
329  for (x = 0; x < width; x++) {
330  b = decode_sym_565(gb, lru[0], 5);
331  g = decode_sym_565(gb, lru[1], is_565 ? 6 : 5);
332  r = decode_sym_565(gb, lru[2], 5);
333  dst[x * 3 + 0] = (r << 3) | (r >> 2);
334  dst[x * 3 + 1] = is_565 ? (g << 2) | (g >> 4) : (g << 3) | (g >> 2);
335  dst[x * 3 + 2] = (b << 3) | (b >> 2);
336  }
337 
338  dst += stride;
339  }
340 
341  return y;
342 }
343 
344 static void setup_lru_555(uint8_t lru[3][8])
345 {
346  memcpy(lru[0], def_lru_555, 8 * sizeof(*def_lru));
347  memcpy(lru[1], def_lru_555, 8 * sizeof(*def_lru));
348  memcpy(lru[2], def_lru_555, 8 * sizeof(*def_lru));
349 }
350 
351 static void setup_lru_565(uint8_t lru[3][8])
352 {
353  memcpy(lru[0], def_lru_555, 8 * sizeof(*def_lru));
354  memcpy(lru[1], def_lru_565, 8 * sizeof(*def_lru));
355  memcpy(lru[2], def_lru_555, 8 * sizeof(*def_lru));
356 }
357 
359  int line, int left, uint8_t lru[3][8])
360 {
361  return dx2_decode_slice_5x5(gb, frame, line, left, lru, 0);
362 }
363 
365  int line, int left, uint8_t lru[3][8])
366 {
367  return dx2_decode_slice_5x5(gb, frame, line, left, lru, 1);
368 }
369 
371  const uint8_t *src, int src_size, int is_565)
372 {
374  if (is_565)
375  return dxtory_decode_v2(avctx, pic, src, src_size,
378  fmt);
379  else
380  return dxtory_decode_v2(avctx, pic, src, src_size,
383  fmt);
384 }
385 
387  int line, int left, uint8_t lru[3][8])
388 {
389  int x, y;
390  int width = frame->width;
391  int stride = frame->linesize[0];
392  uint8_t *dst = frame->data[0] + stride * line;
393 
394  for (y = 0; y < left && get_bits_left(gb) > 16; y++) {
395  for (x = 0; x < width; x++) {
396  dst[x * 3 + 0] = decode_sym(gb, lru[0]);
397  dst[x * 3 + 1] = decode_sym(gb, lru[1]);
398  dst[x * 3 + 2] = decode_sym(gb, lru[2]);
399  }
400 
401  dst += stride;
402  }
403 
404  return y;
405 }
406 
407 static void default_setup_lru(uint8_t lru[3][8])
408 {
409  int i;
410 
411  for (i = 0; i < 3; i++)
412  memcpy(lru[i], def_lru, 8 * sizeof(*def_lru));
413 }
414 
416  const uint8_t *src, int src_size)
417 {
418  return dxtory_decode_v2(avctx, pic, src, src_size,
422 }
423 
425  int line, int left,
426  uint8_t lru[3][8])
427 {
428  int x, y, i, j;
429  int width = frame->width;
430 
431  int ystride = frame->linesize[0];
432  int ustride = frame->linesize[1];
433  int vstride = frame->linesize[2];
434 
435  uint8_t *Y = frame->data[0] + ystride * line;
436  uint8_t *U = frame->data[1] + (ustride >> 2) * line;
437  uint8_t *V = frame->data[2] + (vstride >> 2) * line;
438 
439  for (y = 0; y < left - 3 && get_bits_left(gb) > 16; y += 4) {
440  for (x = 0; x < width; x += 4) {
441  for (j = 0; j < 4; j++)
442  for (i = 0; i < 4; i++)
443  Y[x + i + j * ystride] = decode_sym(gb, lru[0]);
444  U[x >> 2] = decode_sym(gb, lru[1]) ^ 0x80;
445  V[x >> 2] = decode_sym(gb, lru[2]) ^ 0x80;
446  }
447 
448  Y += ystride << 2;
449  U += ustride;
450  V += vstride;
451  }
452 
453  return y;
454 }
455 
456 
458  const uint8_t *src, int src_size)
459 {
460  return dxtory_decode_v2(avctx, pic, src, src_size,
464 }
465 
467  int line, int left,
468  uint8_t lru[3][8])
469 {
470  int x, y;
471 
472  int width = frame->width;
473 
474  int ystride = frame->linesize[0];
475  int ustride = frame->linesize[1];
476  int vstride = frame->linesize[2];
477 
478  uint8_t *Y = frame->data[0] + ystride * line;
479  uint8_t *U = frame->data[1] + (ustride >> 1) * line;
480  uint8_t *V = frame->data[2] + (vstride >> 1) * line;
481 
482 
483  for (y = 0; y < left - 1 && get_bits_left(gb) > 16; y += 2) {
484  for (x = 0; x < width; x += 2) {
485  Y[x + 0 + 0 * ystride] = decode_sym(gb, lru[0]);
486  Y[x + 1 + 0 * ystride] = decode_sym(gb, lru[0]);
487  Y[x + 0 + 1 * ystride] = decode_sym(gb, lru[0]);
488  Y[x + 1 + 1 * ystride] = decode_sym(gb, lru[0]);
489  U[x >> 1] = decode_sym(gb, lru[1]) ^ 0x80;
490  V[x >> 1] = decode_sym(gb, lru[2]) ^ 0x80;
491  }
492 
493  Y += ystride << 1;
494  U += ustride;
495  V += vstride;
496  }
497 
498  return y;
499 }
500 
502  const uint8_t *src, int src_size)
503 {
504  return dxtory_decode_v2(avctx, pic, src, src_size,
508 }
509 
511  int line, int left,
512  uint8_t lru[3][8])
513 {
514  int x, y;
515 
516  int width = frame->width;
517 
518  int ystride = frame->linesize[0];
519  int ustride = frame->linesize[1];
520  int vstride = frame->linesize[2];
521 
522  uint8_t *Y = frame->data[0] + ystride * line;
523  uint8_t *U = frame->data[1] + ustride * line;
524  uint8_t *V = frame->data[2] + vstride * line;
525 
526  for (y = 0; y < left && get_bits_left(gb) > 16; y++) {
527  for (x = 0; x < width; x++) {
528  Y[x] = decode_sym(gb, lru[0]);
529  U[x] = decode_sym(gb, lru[1]) ^ 0x80;
530  V[x] = decode_sym(gb, lru[2]) ^ 0x80;
531  }
532 
533  Y += ystride;
534  U += ustride;
535  V += vstride;
536  }
537 
538  return y;
539 }
540 
542  const uint8_t *src, int src_size)
543 {
544  return dxtory_decode_v2(avctx, pic, src, src_size,
548 }
549 
550 static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
551  AVPacket *avpkt)
552 {
553  AVFrame *pic = data;
554  const uint8_t *src = avpkt->data;
555  int ret;
556 
557  if (avpkt->size < 16) {
558  av_log(avctx, AV_LOG_ERROR, "packet too small\n");
559  return AVERROR_INVALIDDATA;
560  }
561 
562  switch (AV_RB32(src)) {
563  case 0x01000001:
564  ret = dxtory_decode_v1_rgb(avctx, pic, src + 16, avpkt->size - 16,
565  AV_PIX_FMT_BGR24, 3);
566  break;
567  case 0x01000009:
568  ret = dxtory_decode_v2_rgb(avctx, pic, src + 16, avpkt->size - 16);
569  break;
570  case 0x02000001:
571  ret = dxtory_decode_v1_420(avctx, pic, src + 16, avpkt->size - 16);
572  break;
573  case 0x02000009:
574  ret = dxtory_decode_v2_420(avctx, pic, src + 16, avpkt->size - 16);
575  break;
576  case 0x03000001:
577  ret = dxtory_decode_v1_410(avctx, pic, src + 16, avpkt->size - 16);
578  break;
579  case 0x03000009:
580  ret = dxtory_decode_v2_410(avctx, pic, src + 16, avpkt->size - 16);
581  break;
582  case 0x04000001:
583  ret = dxtory_decode_v1_444(avctx, pic, src + 16, avpkt->size - 16);
584  break;
585  case 0x04000009:
586  ret = dxtory_decode_v2_444(avctx, pic, src + 16, avpkt->size - 16);
587  break;
588  case 0x17000001:
589  ret = dxtory_decode_v1_rgb(avctx, pic, src + 16, avpkt->size - 16,
591  break;
592  case 0x17000009:
593  ret = dxtory_decode_v2_565(avctx, pic, src + 16, avpkt->size - 16, 1);
594  break;
595  case 0x18000001:
596  case 0x19000001:
597  ret = dxtory_decode_v1_rgb(avctx, pic, src + 16, avpkt->size - 16,
599  break;
600  case 0x18000009:
601  case 0x19000009:
602  ret = dxtory_decode_v2_565(avctx, pic, src + 16, avpkt->size - 16, 0);
603  break;
604  default:
605  avpriv_request_sample(avctx, "Frame header %"PRIX32, AV_RB32(src));
606  return AVERROR_PATCHWELCOME;
607  }
608 
609  if (ret)
610  return ret;
611 
613  pic->key_frame = 1;
614  *got_frame = 1;
615 
616  return avpkt->size;
617 }
618 
620  .name = "dxtory",
621  .long_name = NULL_IF_CONFIG_SMALL("Dxtory"),
622  .type = AVMEDIA_TYPE_VIDEO,
623  .id = AV_CODEC_ID_DXTORY,
624  .decode = decode_frame,
625  .capabilities = AV_CODEC_CAP_DR1,
626 };
static int dxtory_decode_v2_rgb(AVCodecContext *avctx, AVFrame *pic, const uint8_t *src, int src_size)
Definition: dxtory.c:415
const char const char void * val
Definition: avisynth_c.h:634
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
void(* setup_lru_func)(uint8_t lru[3][8])
Definition: dxtory.c:266
This structure describes decoded (raw) audio or video data.
Definition: frame.h:181
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:101
enum AVCodecID id
Definition: mxfenc.c:104
const char * fmt
Definition: avisynth_c.h:632
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:68
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
Definition: get_bits.h:260
packed RGB 8:8:8, 24bpp, RGBRGB...
Definition: pixfmt.h:65
const char * g
Definition: vf_curves.c:108
static int decode_slice(AVCodecContext *c, void *arg)
Definition: ffv1dec.c:361
static void default_setup_lru(uint8_t lru[3][8])
Definition: dxtory.c:407
packed RGB 5:5:5, 16bpp, (msb)1X 5R 5G 5B(lsb), little-endian, X=unused/undefined ...
Definition: pixfmt.h:117
int size
Definition: avcodec.h:1468
const char * b
Definition: vf_curves.c:109
static const uint8_t def_lru_555[8]
Definition: dxtory.c:175
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1752
static av_always_inline void bytestream2_init(GetByteContext *g, const uint8_t *buf, int buf_size)
Definition: bytestream.h:133
AVCodec.
Definition: avcodec.h:3392
static int dxtory_decode_v2_420(AVCodecContext *avctx, AVFrame *pic, const uint8_t *src, int src_size)
Definition: dxtory.c:501
static int dx2_decode_slice_565(GetBitContext *gb, AVFrame *frame, int line, int left, uint8_t lru[3][8])
Definition: dxtory.c:364
packed RGB 5:6:5, 16bpp, (msb) 5R 6G 5B(lsb), little-endian
Definition: pixfmt.h:115
void void avpriv_request_sample(void *avc, const char *msg,...) av_printf_format(2
Log a generic warning message about a missing feature.
uint8_t bits
Definition: crc.c:295
uint8_t
#define Y
Definition: vf_boxblur.c:76
static int dxtory_decode_v2_444(AVCodecContext *avctx, AVFrame *pic, const uint8_t *src, int src_size)
Definition: dxtory.c:541
static int dxtory_decode_v1_420(AVCodecContext *avctx, AVFrame *pic, const uint8_t *src, int src_size)
Definition: dxtory.c:104
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_RB32
Definition: bytestream.h:87
static av_always_inline int dx2_decode_slice_5x5(GetBitContext *gb, AVFrame *frame, int line, int left, uint8_t lru[3][8], int is_565)
Definition: dxtory.c:318
static AVFrame * frame
static int dxtory_decode_v1_410(AVCodecContext *avctx, AVFrame *pic, const uint8_t *src, int src_size)
Definition: dxtory.c:61
uint8_t * data
Definition: avcodec.h:1467
bitstream reader API header.
#define AV_LOG_VERBOSE
Detailed information.
Definition: log.h:192
static int dxtory_decode_v1_444(AVCodecContext *avctx, AVFrame *pic, const uint8_t *src, int src_size)
Definition: dxtory.c:141
#define FFALIGN(x, a)
Definition: macros.h:48
#define av_log(a,...)
static int dxtory_decode_v2(AVCodecContext *avctx, AVFrame *pic, const uint8_t *src, int src_size, decode_slice_func decode_slice, setup_lru_func setup_lru, enum AVPixelFormat fmt)
Definition: dxtory.c:268
int(* decode_slice_func)(GetBitContext *gb, AVFrame *frame, int line, int height, uint8_t lru[3][8])
Definition: dxtory.c:263
#define U(x)
Definition: vp56_arith.h:37
static int get_bits_left(GetBitContext *gb)
Definition: get_bits.h:607
static const uint8_t def_lru[8]
Definition: dxtory.c:174
int width
width and height of the video frame
Definition: frame.h:230
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
static void setup_lru_555(uint8_t lru[3][8])
Definition: dxtory.c:344
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:176
static int dx2_decode_slice_420(GetBitContext *gb, AVFrame *frame, int line, int left, uint8_t lru[3][8])
Definition: dxtory.c:466
const char * r
Definition: vf_curves.c:107
Definition: graph2dot.c:48
const char * name
Name of the codec implementation.
Definition: avcodec.h:3399
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:252
#define AV_COPY16(d, s)
Definition: intreadwrite.h:582
int width
picture width / height.
Definition: avcodec.h:1711
typedef void(APIENTRY *FF_PFNGLACTIVETEXTUREPROC)(GLenum texture)
static int dx2_decode_slice_410(GetBitContext *gb, AVFrame *frame, int line, int left, uint8_t lru[3][8])
Definition: dxtory.c:424
static int dx2_decode_slice_rgb(GetBitContext *gb, AVFrame *frame, int line, int left, uint8_t lru[3][8])
Definition: dxtory.c:386
#define AV_COPY32U(d, s)
Definition: intreadwrite.h:557
packed RGB 8:8:8, 24bpp, BGRBGR...
Definition: pixfmt.h:66
static int dx2_decode_slice_555(GetBitContext *gb, AVFrame *frame, int line, int left, uint8_t lru[3][8])
Definition: dxtory.c:358
static uint8_t decode_sym(GetBitContext *gb, uint8_t lru[8])
Definition: dxtory.c:178
static int dxtory_decode_v2_410(AVCodecContext *avctx, AVFrame *pic, const uint8_t *src, int src_size)
Definition: dxtory.c:457
#define src
Definition: vp9dsp.c:530
static int load_buffer(AVCodecContext *avctx, const uint8_t *src, int src_size, GetByteContext *gb, int *nslices, int *off)
Definition: dxtory.c:223
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:62
AVCodec ff_dxtory_decoder
Definition: dxtory.c:619
Libavcodec external API header.
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:209
static int dxtory_decode_v2_565(AVCodecContext *avctx, AVFrame *pic, const uint8_t *src, int src_size, int is_565)
Definition: dxtory.c:370
static int init_get_bits8(GetBitContext *s, const uint8_t *buffer, int byte_size)
Initialize GetBitContext.
Definition: get_bits.h:449
main external API structure.
Definition: avcodec.h:1532
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
Definition: utils.c:894
BYTE int const BYTE int int int height
Definition: avisynth_c.h:676
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:69
static int check_slice_size(AVCodecContext *avctx, const uint8_t *src, int src_size, int slice_size, int off)
Definition: dxtory.c:195
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:192
static const uint8_t def_lru_565[8]
Definition: dxtory.c:176
GLint GLenum GLboolean GLsizei stride
Definition: opengl_enc.c:105
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:63
common internal api header.
common internal and external API header
static int get_unary(GetBitContext *gb, int stop, int len)
Get unary code of limited length.
Definition: unary.h:33
static int dx2_decode_slice_444(GetBitContext *gb, AVFrame *frame, int line, int left, uint8_t lru[3][8])
Definition: dxtory.c:510
static double c[64]
int key_frame
1 -> keyframe, 0-> not
Definition: frame.h:247
static int dxtory_decode_v1_rgb(AVCodecContext *avctx, AVFrame *pic, const uint8_t *src, int src_size, int id, int bpp)
Definition: dxtory.c:34
#define av_always_inline
Definition: attributes.h:39
#define stride
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_RL32
Definition: bytestream.h:87
AVPixelFormat
Pixel format.
Definition: pixfmt.h:61
This structure stores compressed data.
Definition: avcodec.h:1444
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:856
static uint8_t decode_sym_565(GetBitContext *gb, uint8_t lru[8], int bits)
Definition: dxtory.c:245
#define V
Definition: avdct.c:30
static void setup_lru_565(uint8_t lru[3][8])
Definition: dxtory.c:351
static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: dxtory.c:550
static int width