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2ba45a60 DM |
1 | /* |
2 | * Ut Video decoder | |
3 | * Copyright (c) 2011 Konstantin Shishkov | |
4 | * | |
5 | * This file is part of FFmpeg. | |
6 | * | |
7 | * FFmpeg is free software; you can redistribute it and/or | |
8 | * modify it under the terms of the GNU Lesser General Public | |
9 | * License as published by the Free Software Foundation; either | |
10 | * version 2.1 of the License, or (at your option) any later version. | |
11 | * | |
12 | * FFmpeg is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * Lesser General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU Lesser General Public | |
18 | * License along with FFmpeg; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
20 | */ | |
21 | ||
22 | /** | |
23 | * @file | |
24 | * Ut Video decoder | |
25 | */ | |
26 | ||
27 | #include <inttypes.h> | |
28 | #include <stdlib.h> | |
29 | ||
30 | #include "libavutil/intreadwrite.h" | |
31 | #include "avcodec.h" | |
32 | #include "bswapdsp.h" | |
33 | #include "bytestream.h" | |
34 | #include "get_bits.h" | |
35 | #include "thread.h" | |
36 | #include "utvideo.h" | |
37 | ||
38 | static int build_huff(const uint8_t *src, VLC *vlc, int *fsym) | |
39 | { | |
40 | int i; | |
41 | HuffEntry he[256]; | |
42 | int last; | |
43 | uint32_t codes[256]; | |
44 | uint8_t bits[256]; | |
45 | uint8_t syms[256]; | |
46 | uint32_t code; | |
47 | ||
48 | *fsym = -1; | |
49 | for (i = 0; i < 256; i++) { | |
50 | he[i].sym = i; | |
51 | he[i].len = *src++; | |
52 | } | |
53 | qsort(he, 256, sizeof(*he), ff_ut_huff_cmp_len); | |
54 | ||
55 | if (!he[0].len) { | |
56 | *fsym = he[0].sym; | |
57 | return 0; | |
58 | } | |
2ba45a60 DM |
59 | |
60 | last = 255; | |
61 | while (he[last].len == 255 && last) | |
62 | last--; | |
63 | ||
f6fa7814 DM |
64 | if (he[last].len > 32) |
65 | return -1; | |
66 | ||
2ba45a60 DM |
67 | code = 1; |
68 | for (i = last; i >= 0; i--) { | |
69 | codes[i] = code >> (32 - he[i].len); | |
70 | bits[i] = he[i].len; | |
71 | syms[i] = he[i].sym; | |
72 | code += 0x80000000u >> (he[i].len - 1); | |
73 | } | |
74 | ||
75 | return ff_init_vlc_sparse(vlc, FFMIN(he[last].len, 11), last + 1, | |
76 | bits, sizeof(*bits), sizeof(*bits), | |
77 | codes, sizeof(*codes), sizeof(*codes), | |
78 | syms, sizeof(*syms), sizeof(*syms), 0); | |
79 | } | |
80 | ||
81 | static int decode_plane(UtvideoContext *c, int plane_no, | |
82 | uint8_t *dst, int step, int stride, | |
83 | int width, int height, | |
84 | const uint8_t *src, int use_pred) | |
85 | { | |
86 | int i, j, slice, pix; | |
87 | int sstart, send; | |
88 | VLC vlc; | |
89 | GetBitContext gb; | |
90 | int prev, fsym; | |
91 | const int cmask = ~(!plane_no && c->avctx->pix_fmt == AV_PIX_FMT_YUV420P); | |
92 | ||
93 | if (build_huff(src, &vlc, &fsym)) { | |
94 | av_log(c->avctx, AV_LOG_ERROR, "Cannot build Huffman codes\n"); | |
95 | return AVERROR_INVALIDDATA; | |
96 | } | |
97 | if (fsym >= 0) { // build_huff reported a symbol to fill slices with | |
98 | send = 0; | |
99 | for (slice = 0; slice < c->slices; slice++) { | |
100 | uint8_t *dest; | |
101 | ||
102 | sstart = send; | |
103 | send = (height * (slice + 1) / c->slices) & cmask; | |
104 | dest = dst + sstart * stride; | |
105 | ||
106 | prev = 0x80; | |
107 | for (j = sstart; j < send; j++) { | |
108 | for (i = 0; i < width * step; i += step) { | |
109 | pix = fsym; | |
110 | if (use_pred) { | |
111 | prev += pix; | |
112 | pix = prev; | |
113 | } | |
114 | dest[i] = pix; | |
115 | } | |
116 | dest += stride; | |
117 | } | |
118 | } | |
119 | return 0; | |
120 | } | |
121 | ||
122 | src += 256; | |
123 | ||
124 | send = 0; | |
125 | for (slice = 0; slice < c->slices; slice++) { | |
126 | uint8_t *dest; | |
127 | int slice_data_start, slice_data_end, slice_size; | |
128 | ||
129 | sstart = send; | |
130 | send = (height * (slice + 1) / c->slices) & cmask; | |
131 | dest = dst + sstart * stride; | |
132 | ||
133 | // slice offset and size validation was done earlier | |
134 | slice_data_start = slice ? AV_RL32(src + slice * 4 - 4) : 0; | |
135 | slice_data_end = AV_RL32(src + slice * 4); | |
136 | slice_size = slice_data_end - slice_data_start; | |
137 | ||
138 | if (!slice_size) { | |
139 | av_log(c->avctx, AV_LOG_ERROR, "Plane has more than one symbol " | |
140 | "yet a slice has a length of zero.\n"); | |
141 | goto fail; | |
142 | } | |
143 | ||
144 | memcpy(c->slice_bits, src + slice_data_start + c->slices * 4, | |
145 | slice_size); | |
146 | memset(c->slice_bits + slice_size, 0, FF_INPUT_BUFFER_PADDING_SIZE); | |
147 | c->bdsp.bswap_buf((uint32_t *) c->slice_bits, | |
148 | (uint32_t *) c->slice_bits, | |
149 | (slice_data_end - slice_data_start + 3) >> 2); | |
150 | init_get_bits(&gb, c->slice_bits, slice_size * 8); | |
151 | ||
152 | prev = 0x80; | |
153 | for (j = sstart; j < send; j++) { | |
154 | for (i = 0; i < width * step; i += step) { | |
155 | if (get_bits_left(&gb) <= 0) { | |
156 | av_log(c->avctx, AV_LOG_ERROR, | |
157 | "Slice decoding ran out of bits\n"); | |
158 | goto fail; | |
159 | } | |
160 | pix = get_vlc2(&gb, vlc.table, vlc.bits, 3); | |
161 | if (pix < 0) { | |
162 | av_log(c->avctx, AV_LOG_ERROR, "Decoding error\n"); | |
163 | goto fail; | |
164 | } | |
165 | if (use_pred) { | |
166 | prev += pix; | |
167 | pix = prev; | |
168 | } | |
169 | dest[i] = pix; | |
170 | } | |
171 | dest += stride; | |
172 | } | |
173 | if (get_bits_left(&gb) > 32) | |
174 | av_log(c->avctx, AV_LOG_WARNING, | |
175 | "%d bits left after decoding slice\n", get_bits_left(&gb)); | |
176 | } | |
177 | ||
178 | ff_free_vlc(&vlc); | |
179 | ||
180 | return 0; | |
181 | fail: | |
182 | ff_free_vlc(&vlc); | |
183 | return AVERROR_INVALIDDATA; | |
184 | } | |
185 | ||
186 | static void restore_rgb_planes(uint8_t *src, int step, int stride, int width, | |
187 | int height) | |
188 | { | |
189 | int i, j; | |
190 | uint8_t r, g, b; | |
191 | ||
192 | for (j = 0; j < height; j++) { | |
193 | for (i = 0; i < width * step; i += step) { | |
194 | r = src[i]; | |
195 | g = src[i + 1]; | |
196 | b = src[i + 2]; | |
197 | src[i] = r + g - 0x80; | |
198 | src[i + 2] = b + g - 0x80; | |
199 | } | |
200 | src += stride; | |
201 | } | |
202 | } | |
203 | ||
204 | static void restore_median(uint8_t *src, int step, int stride, | |
205 | int width, int height, int slices, int rmode) | |
206 | { | |
207 | int i, j, slice; | |
208 | int A, B, C; | |
209 | uint8_t *bsrc; | |
210 | int slice_start, slice_height; | |
211 | const int cmask = ~rmode; | |
212 | ||
213 | for (slice = 0; slice < slices; slice++) { | |
214 | slice_start = ((slice * height) / slices) & cmask; | |
215 | slice_height = ((((slice + 1) * height) / slices) & cmask) - | |
216 | slice_start; | |
217 | ||
092a9121 DM |
218 | if (!slice_height) |
219 | continue; | |
2ba45a60 DM |
220 | bsrc = src + slice_start * stride; |
221 | ||
222 | // first line - left neighbour prediction | |
223 | bsrc[0] += 0x80; | |
224 | A = bsrc[0]; | |
225 | for (i = step; i < width * step; i += step) { | |
226 | bsrc[i] += A; | |
227 | A = bsrc[i]; | |
228 | } | |
229 | bsrc += stride; | |
f6fa7814 | 230 | if (slice_height <= 1) |
2ba45a60 DM |
231 | continue; |
232 | // second line - first element has top prediction, the rest uses median | |
233 | C = bsrc[-stride]; | |
234 | bsrc[0] += C; | |
235 | A = bsrc[0]; | |
236 | for (i = step; i < width * step; i += step) { | |
237 | B = bsrc[i - stride]; | |
238 | bsrc[i] += mid_pred(A, B, (uint8_t)(A + B - C)); | |
239 | C = B; | |
240 | A = bsrc[i]; | |
241 | } | |
242 | bsrc += stride; | |
243 | // the rest of lines use continuous median prediction | |
244 | for (j = 2; j < slice_height; j++) { | |
245 | for (i = 0; i < width * step; i += step) { | |
246 | B = bsrc[i - stride]; | |
247 | bsrc[i] += mid_pred(A, B, (uint8_t)(A + B - C)); | |
248 | C = B; | |
249 | A = bsrc[i]; | |
250 | } | |
251 | bsrc += stride; | |
252 | } | |
253 | } | |
254 | } | |
255 | ||
256 | /* UtVideo interlaced mode treats every two lines as a single one, | |
257 | * so restoring function should take care of possible padding between | |
258 | * two parts of the same "line". | |
259 | */ | |
260 | static void restore_median_il(uint8_t *src, int step, int stride, | |
261 | int width, int height, int slices, int rmode) | |
262 | { | |
263 | int i, j, slice; | |
264 | int A, B, C; | |
265 | uint8_t *bsrc; | |
266 | int slice_start, slice_height; | |
267 | const int cmask = ~(rmode ? 3 : 1); | |
268 | const int stride2 = stride << 1; | |
269 | ||
270 | for (slice = 0; slice < slices; slice++) { | |
271 | slice_start = ((slice * height) / slices) & cmask; | |
272 | slice_height = ((((slice + 1) * height) / slices) & cmask) - | |
273 | slice_start; | |
274 | slice_height >>= 1; | |
092a9121 DM |
275 | if (!slice_height) |
276 | continue; | |
2ba45a60 DM |
277 | |
278 | bsrc = src + slice_start * stride; | |
279 | ||
280 | // first line - left neighbour prediction | |
281 | bsrc[0] += 0x80; | |
282 | A = bsrc[0]; | |
283 | for (i = step; i < width * step; i += step) { | |
284 | bsrc[i] += A; | |
285 | A = bsrc[i]; | |
286 | } | |
287 | for (i = 0; i < width * step; i += step) { | |
288 | bsrc[stride + i] += A; | |
289 | A = bsrc[stride + i]; | |
290 | } | |
291 | bsrc += stride2; | |
f6fa7814 | 292 | if (slice_height <= 1) |
2ba45a60 DM |
293 | continue; |
294 | // second line - first element has top prediction, the rest uses median | |
295 | C = bsrc[-stride2]; | |
296 | bsrc[0] += C; | |
297 | A = bsrc[0]; | |
298 | for (i = step; i < width * step; i += step) { | |
299 | B = bsrc[i - stride2]; | |
300 | bsrc[i] += mid_pred(A, B, (uint8_t)(A + B - C)); | |
301 | C = B; | |
302 | A = bsrc[i]; | |
303 | } | |
304 | for (i = 0; i < width * step; i += step) { | |
305 | B = bsrc[i - stride]; | |
306 | bsrc[stride + i] += mid_pred(A, B, (uint8_t)(A + B - C)); | |
307 | C = B; | |
308 | A = bsrc[stride + i]; | |
309 | } | |
310 | bsrc += stride2; | |
311 | // the rest of lines use continuous median prediction | |
312 | for (j = 2; j < slice_height; j++) { | |
313 | for (i = 0; i < width * step; i += step) { | |
314 | B = bsrc[i - stride2]; | |
315 | bsrc[i] += mid_pred(A, B, (uint8_t)(A + B - C)); | |
316 | C = B; | |
317 | A = bsrc[i]; | |
318 | } | |
319 | for (i = 0; i < width * step; i += step) { | |
320 | B = bsrc[i - stride]; | |
321 | bsrc[i + stride] += mid_pred(A, B, (uint8_t)(A + B - C)); | |
322 | C = B; | |
323 | A = bsrc[i + stride]; | |
324 | } | |
325 | bsrc += stride2; | |
326 | } | |
327 | } | |
328 | } | |
329 | ||
330 | static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, | |
331 | AVPacket *avpkt) | |
332 | { | |
333 | const uint8_t *buf = avpkt->data; | |
334 | int buf_size = avpkt->size; | |
335 | UtvideoContext *c = avctx->priv_data; | |
336 | int i, j; | |
337 | const uint8_t *plane_start[5]; | |
338 | int plane_size, max_slice_size = 0, slice_start, slice_end, slice_size; | |
339 | int ret; | |
340 | GetByteContext gb; | |
341 | ThreadFrame frame = { .f = data }; | |
342 | ||
343 | if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0) | |
344 | return ret; | |
345 | ||
346 | /* parse plane structure to get frame flags and validate slice offsets */ | |
347 | bytestream2_init(&gb, buf, buf_size); | |
348 | for (i = 0; i < c->planes; i++) { | |
349 | plane_start[i] = gb.buffer; | |
350 | if (bytestream2_get_bytes_left(&gb) < 256 + 4 * c->slices) { | |
351 | av_log(avctx, AV_LOG_ERROR, "Insufficient data for a plane\n"); | |
352 | return AVERROR_INVALIDDATA; | |
353 | } | |
354 | bytestream2_skipu(&gb, 256); | |
355 | slice_start = 0; | |
356 | slice_end = 0; | |
357 | for (j = 0; j < c->slices; j++) { | |
358 | slice_end = bytestream2_get_le32u(&gb); | |
359 | slice_size = slice_end - slice_start; | |
360 | if (slice_end < 0 || slice_size < 0 || | |
361 | bytestream2_get_bytes_left(&gb) < slice_end) { | |
362 | av_log(avctx, AV_LOG_ERROR, "Incorrect slice size\n"); | |
363 | return AVERROR_INVALIDDATA; | |
364 | } | |
365 | slice_start = slice_end; | |
366 | max_slice_size = FFMAX(max_slice_size, slice_size); | |
367 | } | |
368 | plane_size = slice_end; | |
369 | bytestream2_skipu(&gb, plane_size); | |
370 | } | |
371 | plane_start[c->planes] = gb.buffer; | |
372 | if (bytestream2_get_bytes_left(&gb) < c->frame_info_size) { | |
373 | av_log(avctx, AV_LOG_ERROR, "Not enough data for frame information\n"); | |
374 | return AVERROR_INVALIDDATA; | |
375 | } | |
376 | c->frame_info = bytestream2_get_le32u(&gb); | |
377 | av_log(avctx, AV_LOG_DEBUG, "frame information flags %"PRIX32"\n", | |
378 | c->frame_info); | |
379 | ||
380 | c->frame_pred = (c->frame_info >> 8) & 3; | |
381 | ||
382 | if (c->frame_pred == PRED_GRADIENT) { | |
383 | avpriv_request_sample(avctx, "Frame with gradient prediction"); | |
384 | return AVERROR_PATCHWELCOME; | |
385 | } | |
386 | ||
387 | av_fast_malloc(&c->slice_bits, &c->slice_bits_size, | |
388 | max_slice_size + FF_INPUT_BUFFER_PADDING_SIZE); | |
389 | ||
390 | if (!c->slice_bits) { | |
391 | av_log(avctx, AV_LOG_ERROR, "Cannot allocate temporary buffer\n"); | |
392 | return AVERROR(ENOMEM); | |
393 | } | |
394 | ||
395 | switch (c->avctx->pix_fmt) { | |
396 | case AV_PIX_FMT_RGB24: | |
397 | case AV_PIX_FMT_RGBA: | |
398 | for (i = 0; i < c->planes; i++) { | |
399 | ret = decode_plane(c, i, frame.f->data[0] + ff_ut_rgb_order[i], | |
400 | c->planes, frame.f->linesize[0], avctx->width, | |
401 | avctx->height, plane_start[i], | |
402 | c->frame_pred == PRED_LEFT); | |
403 | if (ret) | |
404 | return ret; | |
405 | if (c->frame_pred == PRED_MEDIAN) { | |
406 | if (!c->interlaced) { | |
407 | restore_median(frame.f->data[0] + ff_ut_rgb_order[i], | |
408 | c->planes, frame.f->linesize[0], avctx->width, | |
409 | avctx->height, c->slices, 0); | |
410 | } else { | |
411 | restore_median_il(frame.f->data[0] + ff_ut_rgb_order[i], | |
412 | c->planes, frame.f->linesize[0], | |
413 | avctx->width, avctx->height, c->slices, | |
414 | 0); | |
415 | } | |
416 | } | |
417 | } | |
418 | restore_rgb_planes(frame.f->data[0], c->planes, frame.f->linesize[0], | |
419 | avctx->width, avctx->height); | |
420 | break; | |
421 | case AV_PIX_FMT_YUV420P: | |
422 | for (i = 0; i < 3; i++) { | |
423 | ret = decode_plane(c, i, frame.f->data[i], 1, frame.f->linesize[i], | |
424 | avctx->width >> !!i, avctx->height >> !!i, | |
425 | plane_start[i], c->frame_pred == PRED_LEFT); | |
426 | if (ret) | |
427 | return ret; | |
428 | if (c->frame_pred == PRED_MEDIAN) { | |
429 | if (!c->interlaced) { | |
430 | restore_median(frame.f->data[i], 1, frame.f->linesize[i], | |
431 | avctx->width >> !!i, avctx->height >> !!i, | |
432 | c->slices, !i); | |
433 | } else { | |
434 | restore_median_il(frame.f->data[i], 1, frame.f->linesize[i], | |
435 | avctx->width >> !!i, | |
436 | avctx->height >> !!i, | |
437 | c->slices, !i); | |
438 | } | |
439 | } | |
440 | } | |
441 | break; | |
442 | case AV_PIX_FMT_YUV422P: | |
443 | for (i = 0; i < 3; i++) { | |
444 | ret = decode_plane(c, i, frame.f->data[i], 1, frame.f->linesize[i], | |
445 | avctx->width >> !!i, avctx->height, | |
446 | plane_start[i], c->frame_pred == PRED_LEFT); | |
447 | if (ret) | |
448 | return ret; | |
449 | if (c->frame_pred == PRED_MEDIAN) { | |
450 | if (!c->interlaced) { | |
451 | restore_median(frame.f->data[i], 1, frame.f->linesize[i], | |
452 | avctx->width >> !!i, avctx->height, | |
453 | c->slices, 0); | |
454 | } else { | |
455 | restore_median_il(frame.f->data[i], 1, frame.f->linesize[i], | |
456 | avctx->width >> !!i, avctx->height, | |
457 | c->slices, 0); | |
458 | } | |
459 | } | |
460 | } | |
461 | break; | |
462 | } | |
463 | ||
464 | frame.f->key_frame = 1; | |
465 | frame.f->pict_type = AV_PICTURE_TYPE_I; | |
466 | frame.f->interlaced_frame = !!c->interlaced; | |
467 | ||
468 | *got_frame = 1; | |
469 | ||
470 | /* always report that the buffer was completely consumed */ | |
471 | return buf_size; | |
472 | } | |
473 | ||
474 | static av_cold int decode_init(AVCodecContext *avctx) | |
475 | { | |
476 | UtvideoContext * const c = avctx->priv_data; | |
477 | ||
478 | c->avctx = avctx; | |
479 | ||
480 | ff_bswapdsp_init(&c->bdsp); | |
481 | ||
482 | if (avctx->extradata_size < 16) { | |
483 | av_log(avctx, AV_LOG_ERROR, | |
484 | "Insufficient extradata size %d, should be at least 16\n", | |
485 | avctx->extradata_size); | |
486 | return AVERROR_INVALIDDATA; | |
487 | } | |
488 | ||
489 | av_log(avctx, AV_LOG_DEBUG, "Encoder version %d.%d.%d.%d\n", | |
490 | avctx->extradata[3], avctx->extradata[2], | |
491 | avctx->extradata[1], avctx->extradata[0]); | |
492 | av_log(avctx, AV_LOG_DEBUG, "Original format %"PRIX32"\n", | |
493 | AV_RB32(avctx->extradata + 4)); | |
494 | c->frame_info_size = AV_RL32(avctx->extradata + 8); | |
495 | c->flags = AV_RL32(avctx->extradata + 12); | |
496 | ||
497 | if (c->frame_info_size != 4) | |
498 | avpriv_request_sample(avctx, "Frame info not 4 bytes"); | |
499 | av_log(avctx, AV_LOG_DEBUG, "Encoding parameters %08"PRIX32"\n", c->flags); | |
500 | c->slices = (c->flags >> 24) + 1; | |
501 | c->compression = c->flags & 1; | |
502 | c->interlaced = c->flags & 0x800; | |
503 | ||
504 | c->slice_bits_size = 0; | |
505 | ||
506 | switch (avctx->codec_tag) { | |
507 | case MKTAG('U', 'L', 'R', 'G'): | |
508 | c->planes = 3; | |
509 | avctx->pix_fmt = AV_PIX_FMT_RGB24; | |
510 | break; | |
511 | case MKTAG('U', 'L', 'R', 'A'): | |
512 | c->planes = 4; | |
513 | avctx->pix_fmt = AV_PIX_FMT_RGBA; | |
514 | break; | |
515 | case MKTAG('U', 'L', 'Y', '0'): | |
516 | c->planes = 3; | |
517 | avctx->pix_fmt = AV_PIX_FMT_YUV420P; | |
518 | avctx->colorspace = AVCOL_SPC_BT470BG; | |
519 | break; | |
520 | case MKTAG('U', 'L', 'Y', '2'): | |
521 | c->planes = 3; | |
522 | avctx->pix_fmt = AV_PIX_FMT_YUV422P; | |
523 | avctx->colorspace = AVCOL_SPC_BT470BG; | |
524 | break; | |
525 | case MKTAG('U', 'L', 'H', '0'): | |
526 | c->planes = 3; | |
527 | avctx->pix_fmt = AV_PIX_FMT_YUV420P; | |
528 | avctx->colorspace = AVCOL_SPC_BT709; | |
529 | break; | |
530 | case MKTAG('U', 'L', 'H', '2'): | |
531 | c->planes = 3; | |
532 | avctx->pix_fmt = AV_PIX_FMT_YUV422P; | |
533 | avctx->colorspace = AVCOL_SPC_BT709; | |
534 | break; | |
535 | default: | |
536 | av_log(avctx, AV_LOG_ERROR, "Unknown Ut Video FOURCC provided (%08X)\n", | |
537 | avctx->codec_tag); | |
538 | return AVERROR_INVALIDDATA; | |
539 | } | |
540 | ||
541 | return 0; | |
542 | } | |
543 | ||
544 | static av_cold int decode_end(AVCodecContext *avctx) | |
545 | { | |
546 | UtvideoContext * const c = avctx->priv_data; | |
547 | ||
548 | av_freep(&c->slice_bits); | |
549 | ||
550 | return 0; | |
551 | } | |
552 | ||
553 | AVCodec ff_utvideo_decoder = { | |
554 | .name = "utvideo", | |
555 | .long_name = NULL_IF_CONFIG_SMALL("Ut Video"), | |
556 | .type = AVMEDIA_TYPE_VIDEO, | |
557 | .id = AV_CODEC_ID_UTVIDEO, | |
558 | .priv_data_size = sizeof(UtvideoContext), | |
559 | .init = decode_init, | |
560 | .close = decode_end, | |
561 | .decode = decode_frame, | |
562 | .capabilities = CODEC_CAP_DR1 | CODEC_CAP_FRAME_THREADS, | |
563 | }; |