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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 #include "libavutil/common.h"
26 #include "libavutil/intreadwrite.h"
27 
28 #define BITSTREAM_READER_LE
29 #include "avcodec.h"
30 #include "bytestream.h"
31 #include "get_bits.h"
32 #include "internal.h"
33 #include "unary.h"
34 
36  const uint8_t *src, int src_size,
37  int id, int bpp)
38 {
39  int h;
40  uint8_t *dst;
41  int ret;
42 
43  if (src_size < avctx->width * avctx->height * (int64_t)bpp) {
44  av_log(avctx, AV_LOG_ERROR, "packet too small\n");
45  return AVERROR_INVALIDDATA;
46  }
47 
48  avctx->pix_fmt = id;
49  if ((ret = ff_get_buffer(avctx, pic, 0)) < 0)
50  return ret;
51 
52  dst = pic->data[0];
53  for (h = 0; h < avctx->height; h++) {
54  memcpy(dst, src, avctx->width * bpp);
55  src += avctx->width * bpp;
56  dst += pic->linesize[0];
57  }
58 
59  return 0;
60 }
61 
63  const uint8_t *src, int src_size)
64 {
65  int h, w;
66  uint8_t *Y1, *Y2, *Y3, *Y4, *U, *V;
67  int ret;
68 
69  if (src_size < FFALIGN(avctx->width, 4) * FFALIGN(avctx->height, 4) * 9LL / 8) {
70  av_log(avctx, AV_LOG_ERROR, "packet too small\n");
71  return AVERROR_INVALIDDATA;
72  }
73 
74  avctx->pix_fmt = AV_PIX_FMT_YUV410P;
75  if ((ret = ff_get_buffer(avctx, pic, 0)) < 0)
76  return ret;
77 
78  Y1 = pic->data[0];
79  Y2 = pic->data[0] + pic->linesize[0];
80  Y3 = pic->data[0] + pic->linesize[0] * 2;
81  Y4 = pic->data[0] + pic->linesize[0] * 3;
82  U = pic->data[1];
83  V = pic->data[2];
84  for (h = 0; h < avctx->height; h += 4) {
85  for (w = 0; w < avctx->width; w += 4) {
86  AV_COPY32U(Y1 + w, src);
87  AV_COPY32U(Y2 + w, src + 4);
88  AV_COPY32U(Y3 + w, src + 8);
89  AV_COPY32U(Y4 + w, src + 12);
90  U[w >> 2] = src[16] + 0x80;
91  V[w >> 2] = src[17] + 0x80;
92  src += 18;
93  }
94  Y1 += pic->linesize[0] << 2;
95  Y2 += pic->linesize[0] << 2;
96  Y3 += pic->linesize[0] << 2;
97  Y4 += pic->linesize[0] << 2;
98  U += pic->linesize[1];
99  V += pic->linesize[2];
100  }
101 
102  return 0;
103 }
104 
106  const uint8_t *src, int src_size)
107 {
108  int h, w;
109  uint8_t *Y1, *Y2, *U, *V;
110  int ret;
111 
112  if (src_size < FFALIGN(avctx->width, 2) * FFALIGN(avctx->height, 2) * 3LL / 2) {
113  av_log(avctx, AV_LOG_ERROR, "packet too small\n");
114  return AVERROR_INVALIDDATA;
115  }
116 
117  avctx->pix_fmt = AV_PIX_FMT_YUV420P;
118  if ((ret = ff_get_buffer(avctx, pic, 0)) < 0)
119  return ret;
120 
121  Y1 = pic->data[0];
122  Y2 = pic->data[0] + pic->linesize[0];
123  U = pic->data[1];
124  V = pic->data[2];
125  for (h = 0; h < avctx->height; h += 2) {
126  for (w = 0; w < avctx->width; w += 2) {
127  AV_COPY16(Y1 + w, src);
128  AV_COPY16(Y2 + w, src + 2);
129  U[w >> 1] = src[4] + 0x80;
130  V[w >> 1] = src[5] + 0x80;
131  src += 6;
132  }
133  Y1 += pic->linesize[0] << 1;
134  Y2 += pic->linesize[0] << 1;
135  U += pic->linesize[1];
136  V += pic->linesize[2];
137  }
138 
139  return 0;
140 }
141 
143  const uint8_t *src, int src_size)
144 {
145  int h, w;
146  uint8_t *Y, *U, *V;
147  int ret;
148 
149  if (src_size < avctx->width * avctx->height * 3LL) {
150  av_log(avctx, AV_LOG_ERROR, "packet too small\n");
151  return AVERROR_INVALIDDATA;
152  }
153 
154  avctx->pix_fmt = AV_PIX_FMT_YUV444P;
155  if ((ret = ff_get_buffer(avctx, pic, 0)) < 0)
156  return ret;
157 
158  Y = pic->data[0];
159  U = pic->data[1];
160  V = pic->data[2];
161  for (h = 0; h < avctx->height; h++) {
162  for (w = 0; w < avctx->width; w++) {
163  Y[w] = *src++;
164  U[w] = *src++ ^ 0x80;
165  V[w] = *src++ ^ 0x80;
166  }
167  Y += pic->linesize[0];
168  U += pic->linesize[1];
169  V += pic->linesize[2];
170  }
171 
172  return 0;
173 }
174 
175 static const uint8_t def_lru[8] = { 0x00, 0x20, 0x40, 0x60, 0x80, 0xA0, 0xC0, 0xFF };
176 static const uint8_t def_lru_555[8] = { 0x00, 0x08, 0x10, 0x18, 0x1F };
177 static const uint8_t def_lru_565[8] = { 0x00, 0x08, 0x10, 0x20, 0x30, 0x3F };
178 
179 static inline uint8_t decode_sym(GetBitContext *gb, uint8_t lru[8])
180 {
181  uint8_t c, val;
182 
183  c = get_unary(gb, 0, 8);
184  if (!c) {
185  val = get_bits(gb, 8);
186  memmove(lru + 1, lru, sizeof(*lru) * (8 - 1));
187  } else {
188  val = lru[c - 1];
189  memmove(lru + 1, lru, sizeof(*lru) * (c - 1));
190  }
191  lru[0] = val;
192 
193  return val;
194 }
195 
197  const uint8_t *src, int src_size,
198  int slice_size, int off)
199 {
200  int cur_slice_size;
201 
202  if (slice_size > src_size - off) {
203  av_log(avctx, AV_LOG_ERROR,
204  "invalid slice size %d (only %d bytes left)\n",
205  slice_size, src_size - off);
206  return AVERROR_INVALIDDATA;
207  }
208  if (slice_size <= 16) {
209  av_log(avctx, AV_LOG_ERROR, "invalid slice size %d\n",
210  slice_size);
211  return AVERROR_INVALIDDATA;
212  }
213 
214  cur_slice_size = AV_RL32(src + off);
215  if (cur_slice_size != slice_size - 16) {
216  av_log(avctx, AV_LOG_ERROR,
217  "Slice sizes mismatch: got %d instead of %d\n",
218  cur_slice_size, slice_size - 16);
219  }
220 
221  return 0;
222 }
223 
224 static int load_buffer(AVCodecContext *avctx,
225  const uint8_t *src, int src_size,
226  GetByteContext *gb,
227  int *nslices, int *off)
228 {
229  bytestream2_init(gb, src, src_size);
230  *nslices = bytestream2_get_le16(gb);
231  *off = FFALIGN(*nslices * 4 + 2, 16);
232  if (src_size < *off) {
233  av_log(avctx, AV_LOG_ERROR, "no slice data\n");
234  return AVERROR_INVALIDDATA;
235  }
236 
237  if (!*nslices) {
238  avpriv_request_sample(avctx, "%d slices for %dx%d", *nslices,
239  avctx->width, avctx->height);
240  return AVERROR_PATCHWELCOME;
241  }
242 
243  return 0;
244 }
245 
246 static inline uint8_t decode_sym_565(GetBitContext *gb, uint8_t lru[8],
247  int bits)
248 {
249  uint8_t c, val;
250 
251  c = get_unary(gb, 0, bits);
252  if (!c) {
253  val = get_bits(gb, bits);
254  memmove(lru + 1, lru, sizeof(*lru) * (6 - 1));
255  } else {
256  val = lru[c - 1];
257  memmove(lru + 1, lru, sizeof(*lru) * (c - 1));
258  }
259  lru[0] = val;
260 
261  return val;
262 }
263 
265  int line, int height, uint8_t lru[3][8]);
266 
267 typedef void (*setup_lru_func)(uint8_t lru[3][8]);
268 
269 static int dxtory_decode_v2(AVCodecContext *avctx, AVFrame *pic,
270  const uint8_t *src, int src_size,
272  setup_lru_func setup_lru,
273  enum AVPixelFormat fmt)
274 {
275  GetByteContext gb;
276  GetBitContext gb2;
277  int nslices, slice, line = 0;
278  uint32_t off, slice_size;
279  uint8_t lru[3][8];
280  int ret;
281 
282  ret = load_buffer(avctx, src, src_size, &gb, &nslices, &off);
283  if (ret < 0)
284  return ret;
285 
286  avctx->pix_fmt = fmt;
287  if ((ret = ff_get_buffer(avctx, pic, 0)) < 0)
288  return ret;
289 
290  for (slice = 0; slice < nslices; slice++) {
291  slice_size = bytestream2_get_le32(&gb);
292 
293  setup_lru(lru);
294 
295  ret = check_slice_size(avctx, src, src_size, slice_size, off);
296  if (ret < 0)
297  return ret;
298 
299  if ((ret = init_get_bits8(&gb2, src + off + 16, slice_size - 16)) < 0)
300  return ret;
301 
302  line += decode_slice(&gb2, pic, line, avctx->height - line, lru);
303 
304  off += slice_size;
305  }
306 
307  if (avctx->height - line) {
308  av_log(avctx, AV_LOG_VERBOSE,
309  "Not enough slice data available, "
310  "cropping the frame by %d pixels\n",
311  avctx->height - line);
312  avctx->height = line;
313  }
314 
315  return 0;
316 }
317 
320  int line, int left, uint8_t lru[3][8],
321  int is_565)
322 {
323  int x, y;
324  int r, g, b;
325  int width = frame->width;
326  int stride = frame->linesize[0];
327  uint8_t *dst = frame->data[0] + stride * line;
328 
329  for (y = 0; y < left && get_bits_left(gb) > 16; y++) {
330  for (x = 0; x < width; x++) {
331  b = decode_sym_565(gb, lru[0], 5);
332  g = decode_sym_565(gb, lru[1], is_565 ? 6 : 5);
333  r = decode_sym_565(gb, lru[2], 5);
334  dst[x * 3 + 0] = (r << 3) | (r >> 2);
335  dst[x * 3 + 1] = is_565 ? (g << 2) | (g >> 4) : (g << 3) | (g >> 2);
336  dst[x * 3 + 2] = (b << 3) | (b >> 2);
337  }
338 
339  dst += stride;
340  }
341 
342  return y;
343 }
344 
345 static void setup_lru_555(uint8_t lru[3][8])
346 {
347  memcpy(lru[0], def_lru_555, 8 * sizeof(*def_lru));
348  memcpy(lru[1], def_lru_555, 8 * sizeof(*def_lru));
349  memcpy(lru[2], def_lru_555, 8 * sizeof(*def_lru));
350 }
351 
352 static void setup_lru_565(uint8_t lru[3][8])
353 {
354  memcpy(lru[0], def_lru_555, 8 * sizeof(*def_lru));
355  memcpy(lru[1], def_lru_565, 8 * sizeof(*def_lru));
356  memcpy(lru[2], def_lru_555, 8 * sizeof(*def_lru));
357 }
358 
360  int line, int left, uint8_t lru[3][8])
361 {
362  return dx2_decode_slice_5x5(gb, frame, line, left, lru, 0);
363 }
364 
366  int line, int left, uint8_t lru[3][8])
367 {
368  return dx2_decode_slice_5x5(gb, frame, line, left, lru, 1);
369 }
370 
372  const uint8_t *src, int src_size, int is_565)
373 {
375  if (is_565)
376  return dxtory_decode_v2(avctx, pic, src, src_size,
379  fmt);
380  else
381  return dxtory_decode_v2(avctx, pic, src, src_size,
384  fmt);
385 }
386 
388  int line, int left, uint8_t lru[3][8])
389 {
390  int x, y;
391  int width = frame->width;
392  int stride = frame->linesize[0];
393  uint8_t *dst = frame->data[0] + stride * line;
394 
395  for (y = 0; y < left && get_bits_left(gb) > 16; y++) {
396  for (x = 0; x < width; x++) {
397  dst[x * 3 + 0] = decode_sym(gb, lru[0]);
398  dst[x * 3 + 1] = decode_sym(gb, lru[1]);
399  dst[x * 3 + 2] = decode_sym(gb, lru[2]);
400  }
401 
402  dst += stride;
403  }
404 
405  return y;
406 }
407 
408 static void default_setup_lru(uint8_t lru[3][8])
409 {
410  int i;
411 
412  for (i = 0; i < 3; i++)
413  memcpy(lru[i], def_lru, 8 * sizeof(*def_lru));
414 }
415 
417  const uint8_t *src, int src_size)
418 {
419  return dxtory_decode_v2(avctx, pic, src, src_size,
423 }
424 
426  int line, int left,
427  uint8_t lru[3][8])
428 {
429  int x, y, i, j;
430  int width = frame->width;
431 
432  int ystride = frame->linesize[0];
433  int ustride = frame->linesize[1];
434  int vstride = frame->linesize[2];
435 
436  uint8_t *Y = frame->data[0] + ystride * line;
437  uint8_t *U = frame->data[1] + (ustride >> 2) * line;
438  uint8_t *V = frame->data[2] + (vstride >> 2) * line;
439 
440  for (y = 0; y < left - 3 && get_bits_left(gb) > 16; y += 4) {
441  for (x = 0; x < width; x += 4) {
442  for (j = 0; j < 4; j++)
443  for (i = 0; i < 4; i++)
444  Y[x + i + j * ystride] = decode_sym(gb, lru[0]);
445  U[x >> 2] = decode_sym(gb, lru[1]) ^ 0x80;
446  V[x >> 2] = decode_sym(gb, lru[2]) ^ 0x80;
447  }
448 
449  Y += ystride << 2;
450  U += ustride;
451  V += vstride;
452  }
453 
454  return y;
455 }
456 
457 
459  const uint8_t *src, int src_size)
460 {
461  return dxtory_decode_v2(avctx, pic, src, src_size,
465 }
466 
468  int line, int left,
469  uint8_t lru[3][8])
470 {
471  int x, y;
472 
473  int width = frame->width;
474 
475  int ystride = frame->linesize[0];
476  int ustride = frame->linesize[1];
477  int vstride = frame->linesize[2];
478 
479  uint8_t *Y = frame->data[0] + ystride * line;
480  uint8_t *U = frame->data[1] + (ustride >> 1) * line;
481  uint8_t *V = frame->data[2] + (vstride >> 1) * line;
482 
483 
484  for (y = 0; y < left - 1 && get_bits_left(gb) > 16; y += 2) {
485  for (x = 0; x < width; x += 2) {
486  Y[x + 0 + 0 * ystride] = decode_sym(gb, lru[0]);
487  Y[x + 1 + 0 * ystride] = decode_sym(gb, lru[0]);
488  Y[x + 0 + 1 * ystride] = decode_sym(gb, lru[0]);
489  Y[x + 1 + 1 * ystride] = decode_sym(gb, lru[0]);
490  U[x >> 1] = decode_sym(gb, lru[1]) ^ 0x80;
491  V[x >> 1] = decode_sym(gb, lru[2]) ^ 0x80;
492  }
493 
494  Y += ystride << 1;
495  U += ustride;
496  V += vstride;
497  }
498 
499  return y;
500 }
501 
503  const uint8_t *src, int src_size)
504 {
505  return dxtory_decode_v2(avctx, pic, src, src_size,
509 }
510 
512  int line, int left,
513  uint8_t lru[3][8])
514 {
515  int x, y;
516 
517  int width = frame->width;
518 
519  int ystride = frame->linesize[0];
520  int ustride = frame->linesize[1];
521  int vstride = frame->linesize[2];
522 
523  uint8_t *Y = frame->data[0] + ystride * line;
524  uint8_t *U = frame->data[1] + ustride * line;
525  uint8_t *V = frame->data[2] + vstride * line;
526 
527  for (y = 0; y < left && get_bits_left(gb) > 16; y++) {
528  for (x = 0; x < width; x++) {
529  Y[x] = decode_sym(gb, lru[0]);
530  U[x] = decode_sym(gb, lru[1]) ^ 0x80;
531  V[x] = decode_sym(gb, lru[2]) ^ 0x80;
532  }
533 
534  Y += ystride;
535  U += ustride;
536  V += vstride;
537  }
538 
539  return y;
540 }
541 
543  const uint8_t *src, int src_size)
544 {
545  return dxtory_decode_v2(avctx, pic, src, src_size,
549 }
550 
551 static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
552  AVPacket *avpkt)
553 {
554  AVFrame *pic = data;
555  const uint8_t *src = avpkt->data;
556  int ret;
557 
558  if (avpkt->size < 16) {
559  av_log(avctx, AV_LOG_ERROR, "packet too small\n");
560  return AVERROR_INVALIDDATA;
561  }
562 
563  switch (AV_RB32(src)) {
564  case 0x01000001:
565  ret = dxtory_decode_v1_rgb(avctx, pic, src + 16, avpkt->size - 16,
566  AV_PIX_FMT_BGR24, 3);
567  break;
568  case 0x01000009:
569  ret = dxtory_decode_v2_rgb(avctx, pic, src + 16, avpkt->size - 16);
570  break;
571  case 0x02000001:
572  ret = dxtory_decode_v1_420(avctx, pic, src + 16, avpkt->size - 16);
573  break;
574  case 0x02000009:
575  ret = dxtory_decode_v2_420(avctx, pic, src + 16, avpkt->size - 16);
576  break;
577  case 0x03000001:
578  ret = dxtory_decode_v1_410(avctx, pic, src + 16, avpkt->size - 16);
579  break;
580  case 0x03000009:
581  ret = dxtory_decode_v2_410(avctx, pic, src + 16, avpkt->size - 16);
582  break;
583  case 0x04000001:
584  ret = dxtory_decode_v1_444(avctx, pic, src + 16, avpkt->size - 16);
585  break;
586  case 0x04000009:
587  ret = dxtory_decode_v2_444(avctx, pic, src + 16, avpkt->size - 16);
588  break;
589  case 0x17000001:
590  ret = dxtory_decode_v1_rgb(avctx, pic, src + 16, avpkt->size - 16,
592  break;
593  case 0x17000009:
594  ret = dxtory_decode_v2_565(avctx, pic, src + 16, avpkt->size - 16, 1);
595  break;
596  case 0x18000001:
597  case 0x19000001:
598  ret = dxtory_decode_v1_rgb(avctx, pic, src + 16, avpkt->size - 16,
600  break;
601  case 0x18000009:
602  case 0x19000009:
603  ret = dxtory_decode_v2_565(avctx, pic, src + 16, avpkt->size - 16, 0);
604  break;
605  default:
606  avpriv_request_sample(avctx, "Frame header %"PRIX32, AV_RB32(src));
607  return AVERROR_PATCHWELCOME;
608  }
609 
610  if (ret)
611  return ret;
612 
614  pic->key_frame = 1;
615  *got_frame = 1;
616 
617  return avpkt->size;
618 }
619 
621  .name = "dxtory",
622  .long_name = NULL_IF_CONFIG_SMALL("Dxtory"),
623  .type = AVMEDIA_TYPE_VIDEO,
624  .id = AV_CODEC_ID_DXTORY,
625  .decode = decode_frame,
626  .capabilities = AV_CODEC_CAP_DR1,
627 };
static int dxtory_decode_v2_rgb(AVCodecContext *avctx, AVFrame *pic, const uint8_t *src, int src_size)
Definition: dxtory.c:416
const char const char void * val
Definition: avisynth_c.h:771
#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:267
This structure describes decoded (raw) audio or video data.
Definition: frame.h:201
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:101
const char * fmt
Definition: avisynth_c.h:769
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:67
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
Definition: get_bits.h:261
packed RGB 8:8:8, 24bpp, RGBRGB...
Definition: pixfmt.h:64
const char * g
Definition: vf_curves.c:112
static int decode_slice(AVCodecContext *c, void *arg)
Definition: ffv1dec.c:246
static void default_setup_lru(uint8_t lru[3][8])
Definition: dxtory.c:408
packed RGB 5:5:5, 16bpp, (msb)1X 5R 5G 5B(lsb), little-endian, X=unused/undefined ...
Definition: pixfmt.h:104
int size
Definition: avcodec.h:1401
const char * b
Definition: vf_curves.c:113
static const uint8_t def_lru_555[8]
Definition: dxtory.c:176
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1697
static av_always_inline void bytestream2_init(GetByteContext *g, const uint8_t *buf, int buf_size)
Definition: bytestream.h:133
#define src
Definition: vp8dsp.c:254
AVCodec.
Definition: avcodec.h:3351
static int dxtory_decode_v2_420(AVCodecContext *avctx, AVFrame *pic, const uint8_t *src, int src_size)
Definition: dxtory.c:502
static int dx2_decode_slice_565(GetBitContext *gb, AVFrame *frame, int line, int left, uint8_t lru[3][8])
Definition: dxtory.c:365
packed RGB 5:6:5, 16bpp, (msb) 5R 6G 5B(lsb), little-endian
Definition: pixfmt.h:102
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
#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:542
static int dxtory_decode_v1_420(AVCodecContext *avctx, AVFrame *pic, const uint8_t *src, int src_size)
Definition: dxtory.c:105
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:319
static AVFrame * frame
static int dxtory_decode_v1_410(AVCodecContext *avctx, AVFrame *pic, const uint8_t *src, int src_size)
Definition: dxtory.c:62
#define height
uint8_t * data
Definition: avcodec.h:1400
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:142
#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:269
int(* decode_slice_func)(GetBitContext *gb, AVFrame *frame, int line, int height, uint8_t lru[3][8])
Definition: dxtory.c:264
#define U(x)
Definition: vp56_arith.h:37
static int get_bits_left(GetBitContext *gb)
Definition: get_bits.h:587
static const uint8_t def_lru[8]
Definition: dxtory.c:175
int width
Definition: frame.h:259
#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:345
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
static int dx2_decode_slice_420(GetBitContext *gb, AVFrame *frame, int line, int left, uint8_t lru[3][8])
Definition: dxtory.c:467
const char * r
Definition: vf_curves.c:111
Definition: graph2dot.c:48
uint16_t width
Definition: gdv.c:47
const char * name
Name of the codec implementation.
Definition: avcodec.h:3358
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:284
#define AV_COPY16(d, s)
Definition: intreadwrite.h:582
int width
picture width / height.
Definition: avcodec.h:1660
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:425
static int dx2_decode_slice_rgb(GetBitContext *gb, AVFrame *frame, int line, int left, uint8_t lru[3][8])
Definition: dxtory.c:387
#define AV_COPY32U(d, s)
Definition: intreadwrite.h:557
packed RGB 8:8:8, 24bpp, BGRBGR...
Definition: pixfmt.h:65
static int dx2_decode_slice_555(GetBitContext *gb, AVFrame *frame, int line, int left, uint8_t lru[3][8])
Definition: dxtory.c:359
static uint8_t decode_sym(GetBitContext *gb, uint8_t lru[8])
Definition: dxtory.c:179
static int dxtory_decode_v2_410(AVCodecContext *avctx, AVFrame *pic, const uint8_t *src, int src_size)
Definition: dxtory.c:458
static int load_buffer(AVCodecContext *avctx, const uint8_t *src, int src_size, GetByteContext *gb, int *nslices, int *off)
Definition: dxtory.c:224
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:62
AVCodec ff_dxtory_decoder
Definition: dxtory.c:620
Libavcodec external API header.
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:232
static int dxtory_decode_v2_565(AVCodecContext *avctx, AVFrame *pic, const uint8_t *src, int src_size, int is_565)
Definition: dxtory.c:371
static int init_get_bits8(GetBitContext *s, const uint8_t *buffer, int byte_size)
Initialize GetBitContext.
Definition: get_bits.h:456
main external API structure.
Definition: avcodec.h:1488
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
Definition: decode.c:1886
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:68
static int check_slice_size(AVCodecContext *avctx, const uint8_t *src, int src_size, int slice_size, int off)
Definition: dxtory.c:196
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:215
static const uint8_t def_lru_565[8]
Definition: dxtory.c:177
GLint GLenum GLboolean GLsizei stride
Definition: opengl_enc.c:105
int
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:62
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:511
static double c[64]
int key_frame
1 -> keyframe, 0-> not
Definition: frame.h:279
static int dxtory_decode_v1_rgb(AVCodecContext *avctx, AVFrame *pic, const uint8_t *src, int src_size, int id, int bpp)
Definition: dxtory.c:35
#define av_always_inline
Definition: attributes.h:39
#define stride
enum AVCodecID id
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_RL32
Definition: bytestream.h:87
AVPixelFormat
Pixel format.
Definition: pixfmt.h:60
This structure stores compressed data.
Definition: avcodec.h:1377
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:956
static uint8_t decode_sym_565(GetBitContext *gb, uint8_t lru[8], int bits)
Definition: dxtory.c:246
#define V
Definition: avdct.c:30
static void setup_lru_565(uint8_t lru[3][8])
Definition: dxtory.c:352
static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: dxtory.c:551