83bbcbbc1efa349a3e40e3e6f49da55fed38754d
[libav.git] / libavcodec / indeo5.c
1 /*
2 * Indeo Video Interactive v5 compatible decoder
3 * Copyright (c) 2009 Maxim Poliakovski
4 *
5 * This file is part of Libav.
6 *
7 * Libav 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 * Libav 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 Libav; 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 * Indeo Video Interactive version 5 decoder
25 *
26 * Indeo5 data is usually transported within .avi or .mov files.
27 * Known FOURCCs: 'IV50'
28 */
29
30 #define BITSTREAM_READER_LE
31 #include "avcodec.h"
32 #include "get_bits.h"
33 #include "dsputil.h"
34 #include "ivi_dsp.h"
35 #include "ivi_common.h"
36 #include "indeo5data.h"
37
38 /**
39 * Indeo5 frame types.
40 */
41 enum {
42 FRAMETYPE_INTRA = 0,
43 FRAMETYPE_INTER = 1, ///< non-droppable P-frame
44 FRAMETYPE_INTER_SCAL = 2, ///< droppable P-frame used in the scalability mode
45 FRAMETYPE_INTER_NOREF = 3, ///< droppable P-frame
46 FRAMETYPE_NULL = 4 ///< empty frame with no data
47 };
48
49 #define IVI5_PIC_SIZE_ESC 15
50
51 /**
52 * Decode Indeo5 GOP (Group of pictures) header.
53 * This header is present in key frames only.
54 * It defines parameters for all frames in a GOP.
55 *
56 * @param[in,out] ctx ptr to the decoder context
57 * @param[in] avctx ptr to the AVCodecContext
58 * @return result code: 0 = OK, -1 = error
59 */
60 static int decode_gop_header(IVI45DecContext *ctx, AVCodecContext *avctx)
61 {
62 int result, i, p, tile_size, pic_size_indx, mb_size, blk_size;
63 int quant_mat, blk_size_changed = 0;
64 IVIBandDesc *band, *band1, *band2;
65 IVIPicConfig pic_conf;
66
67 ctx->gop_flags = get_bits(&ctx->gb, 8);
68
69 ctx->gop_hdr_size = (ctx->gop_flags & 1) ? get_bits(&ctx->gb, 16) : 0;
70
71 if (ctx->gop_flags & IVI5_IS_PROTECTED)
72 ctx->lock_word = get_bits_long(&ctx->gb, 32);
73
74 tile_size = (ctx->gop_flags & 0x40) ? 64 << get_bits(&ctx->gb, 2) : 0;
75 if (tile_size > 256) {
76 av_log(avctx, AV_LOG_ERROR, "Invalid tile size: %d\n", tile_size);
77 return AVERROR_INVALIDDATA;
78 }
79
80 /* decode number of wavelet bands */
81 /* num_levels * 3 + 1 */
82 pic_conf.luma_bands = get_bits(&ctx->gb, 2) * 3 + 1;
83 pic_conf.chroma_bands = get_bits1(&ctx->gb) * 3 + 1;
84 ctx->is_scalable = pic_conf.luma_bands != 1 || pic_conf.chroma_bands != 1;
85 if (ctx->is_scalable && (pic_conf.luma_bands != 4 || pic_conf.chroma_bands != 1)) {
86 av_log(avctx, AV_LOG_ERROR, "Scalability: unsupported subdivision! Luma bands: %d, chroma bands: %d\n",
87 pic_conf.luma_bands, pic_conf.chroma_bands);
88 return AVERROR_INVALIDDATA;
89 }
90
91 pic_size_indx = get_bits(&ctx->gb, 4);
92 if (pic_size_indx == IVI5_PIC_SIZE_ESC) {
93 pic_conf.pic_height = get_bits(&ctx->gb, 13);
94 pic_conf.pic_width = get_bits(&ctx->gb, 13);
95 } else {
96 pic_conf.pic_height = ivi5_common_pic_sizes[pic_size_indx * 2 + 1] << 2;
97 pic_conf.pic_width = ivi5_common_pic_sizes[pic_size_indx * 2 ] << 2;
98 }
99
100 if (ctx->gop_flags & 2) {
101 avpriv_report_missing_feature(avctx, "YV12 picture format");
102 return AVERROR_PATCHWELCOME;
103 }
104
105 pic_conf.chroma_height = (pic_conf.pic_height + 3) >> 2;
106 pic_conf.chroma_width = (pic_conf.pic_width + 3) >> 2;
107
108 if (!tile_size) {
109 pic_conf.tile_height = pic_conf.pic_height;
110 pic_conf.tile_width = pic_conf.pic_width;
111 } else {
112 pic_conf.tile_height = pic_conf.tile_width = tile_size;
113 }
114
115 /* check if picture layout was changed and reallocate buffers */
116 if (ivi_pic_config_cmp(&pic_conf, &ctx->pic_conf) || ctx->gop_invalid) {
117 result = ff_ivi_init_planes(ctx->planes, &pic_conf);
118 if (result < 0) {
119 av_log(avctx, AV_LOG_ERROR, "Couldn't reallocate color planes!\n");
120 return result;
121 }
122 ctx->pic_conf = pic_conf;
123 blk_size_changed = 1; /* force reallocation of the internal structures */
124 }
125
126 for (p = 0; p <= 1; p++) {
127 for (i = 0; i < (!p ? pic_conf.luma_bands : pic_conf.chroma_bands); i++) {
128 band = &ctx->planes[p].bands[i];
129
130 band->is_halfpel = get_bits1(&ctx->gb);
131
132 mb_size = get_bits1(&ctx->gb);
133 blk_size = 8 >> get_bits1(&ctx->gb);
134 mb_size = blk_size << !mb_size;
135
136 blk_size_changed = mb_size != band->mb_size || blk_size != band->blk_size;
137 if (blk_size_changed) {
138 band->mb_size = mb_size;
139 band->blk_size = blk_size;
140 }
141
142 if (get_bits1(&ctx->gb)) {
143 avpriv_report_missing_feature(avctx, "Extended transform info");
144 return AVERROR_PATCHWELCOME;
145 }
146
147 /* select transform function and scan pattern according to plane and band number */
148 switch ((p << 2) + i) {
149 case 0:
150 band->inv_transform = ff_ivi_inverse_slant_8x8;
151 band->dc_transform = ff_ivi_dc_slant_2d;
152 band->scan = ff_zigzag_direct;
153 band->transform_size = 8;
154 break;
155
156 case 1:
157 band->inv_transform = ff_ivi_row_slant8;
158 band->dc_transform = ff_ivi_dc_row_slant;
159 band->scan = ff_ivi_vertical_scan_8x8;
160 band->transform_size = 8;
161 break;
162
163 case 2:
164 band->inv_transform = ff_ivi_col_slant8;
165 band->dc_transform = ff_ivi_dc_col_slant;
166 band->scan = ff_ivi_horizontal_scan_8x8;
167 band->transform_size = 8;
168 break;
169
170 case 3:
171 band->inv_transform = ff_ivi_put_pixels_8x8;
172 band->dc_transform = ff_ivi_put_dc_pixel_8x8;
173 band->scan = ff_ivi_horizontal_scan_8x8;
174 band->transform_size = 8;
175 break;
176
177 case 4:
178 band->inv_transform = ff_ivi_inverse_slant_4x4;
179 band->dc_transform = ff_ivi_dc_slant_2d;
180 band->scan = ff_ivi_direct_scan_4x4;
181 band->transform_size = 4;
182 break;
183 }
184
185 band->is_2d_trans = band->inv_transform == ff_ivi_inverse_slant_8x8 ||
186 band->inv_transform == ff_ivi_inverse_slant_4x4;
187
188 if (band->transform_size != band->blk_size)
189 return AVERROR_INVALIDDATA;
190
191 /* select dequant matrix according to plane and band number */
192 if (!p) {
193 quant_mat = (pic_conf.luma_bands > 1) ? i+1 : 0;
194 } else {
195 quant_mat = 5;
196 }
197
198 if (band->blk_size == 8) {
199 band->intra_base = &ivi5_base_quant_8x8_intra[quant_mat][0];
200 band->inter_base = &ivi5_base_quant_8x8_inter[quant_mat][0];
201 band->intra_scale = &ivi5_scale_quant_8x8_intra[quant_mat][0];
202 band->inter_scale = &ivi5_scale_quant_8x8_inter[quant_mat][0];
203 } else {
204 band->intra_base = ivi5_base_quant_4x4_intra;
205 band->inter_base = ivi5_base_quant_4x4_inter;
206 band->intra_scale = ivi5_scale_quant_4x4_intra;
207 band->inter_scale = ivi5_scale_quant_4x4_inter;
208 }
209
210 if (get_bits(&ctx->gb, 2)) {
211 av_log(avctx, AV_LOG_ERROR, "End marker missing!\n");
212 return AVERROR_INVALIDDATA;
213 }
214 }
215 }
216
217 /* copy chroma parameters into the 2nd chroma plane */
218 for (i = 0; i < pic_conf.chroma_bands; i++) {
219 band1 = &ctx->planes[1].bands[i];
220 band2 = &ctx->planes[2].bands[i];
221
222 band2->width = band1->width;
223 band2->height = band1->height;
224 band2->mb_size = band1->mb_size;
225 band2->blk_size = band1->blk_size;
226 band2->is_halfpel = band1->is_halfpel;
227 band2->intra_base = band1->intra_base;
228 band2->inter_base = band1->inter_base;
229 band2->intra_scale = band1->intra_scale;
230 band2->inter_scale = band1->inter_scale;
231 band2->scan = band1->scan;
232 band2->inv_transform = band1->inv_transform;
233 band2->dc_transform = band1->dc_transform;
234 band2->is_2d_trans = band1->is_2d_trans;
235 }
236
237 /* reallocate internal structures if needed */
238 if (blk_size_changed) {
239 result = ff_ivi_init_tiles(ctx->planes, pic_conf.tile_width,
240 pic_conf.tile_height);
241 if (result < 0) {
242 av_log(avctx, AV_LOG_ERROR,
243 "Couldn't reallocate internal structures!\n");
244 return result;
245 }
246 }
247
248 if (ctx->gop_flags & 8) {
249 if (get_bits(&ctx->gb, 3)) {
250 av_log(avctx, AV_LOG_ERROR, "Alignment bits are not zero!\n");
251 return AVERROR_INVALIDDATA;
252 }
253
254 if (get_bits1(&ctx->gb))
255 skip_bits_long(&ctx->gb, 24); /* skip transparency fill color */
256 }
257
258 align_get_bits(&ctx->gb);
259
260 skip_bits(&ctx->gb, 23); /* FIXME: unknown meaning */
261
262 /* skip GOP extension if any */
263 if (get_bits1(&ctx->gb)) {
264 do {
265 i = get_bits(&ctx->gb, 16);
266 } while (i & 0x8000);
267 }
268
269 align_get_bits(&ctx->gb);
270
271 return 0;
272 }
273
274
275 /**
276 * Skip a header extension.
277 *
278 * @param[in,out] gb the GetBit context
279 */
280 static inline void skip_hdr_extension(GetBitContext *gb)
281 {
282 int i, len;
283
284 do {
285 len = get_bits(gb, 8);
286 for (i = 0; i < len; i++) skip_bits(gb, 8);
287 } while(len);
288 }
289
290
291 /**
292 * Decode Indeo5 picture header.
293 *
294 * @param[in,out] ctx ptr to the decoder context
295 * @param[in] avctx ptr to the AVCodecContext
296 * @return result code: 0 = OK, -1 = error
297 */
298 static int decode_pic_hdr(IVI45DecContext *ctx, AVCodecContext *avctx)
299 {
300 int ret;
301
302 if (get_bits(&ctx->gb, 5) != 0x1F) {
303 av_log(avctx, AV_LOG_ERROR, "Invalid picture start code!\n");
304 return AVERROR_INVALIDDATA;
305 }
306
307 ctx->prev_frame_type = ctx->frame_type;
308 ctx->frame_type = get_bits(&ctx->gb, 3);
309 if (ctx->frame_type >= 5) {
310 av_log(avctx, AV_LOG_ERROR, "Invalid frame type: %d \n", ctx->frame_type);
311 return AVERROR_INVALIDDATA;
312 }
313
314 ctx->frame_num = get_bits(&ctx->gb, 8);
315
316 if (ctx->frame_type == FRAMETYPE_INTRA) {
317 if ((ret = decode_gop_header(ctx, avctx)) < 0) {
318 av_log(avctx, AV_LOG_ERROR, "Invalid GOP header, skipping frames.\n");
319 ctx->gop_invalid = 1;
320 return ret;
321 }
322 ctx->gop_invalid = 0;
323 }
324
325 if (ctx->frame_type != FRAMETYPE_NULL) {
326 ctx->frame_flags = get_bits(&ctx->gb, 8);
327
328 ctx->pic_hdr_size = (ctx->frame_flags & 1) ? get_bits_long(&ctx->gb, 24) : 0;
329
330 ctx->checksum = (ctx->frame_flags & 0x10) ? get_bits(&ctx->gb, 16) : 0;
331
332 /* skip unknown extension if any */
333 if (ctx->frame_flags & 0x20)
334 skip_hdr_extension(&ctx->gb); /* XXX: untested */
335
336 /* decode macroblock huffman codebook */
337 ret = ff_ivi_dec_huff_desc(&ctx->gb, ctx->frame_flags & 0x40,
338 IVI_MB_HUFF, &ctx->mb_vlc, avctx);
339 if (ret < 0)
340 return ret;
341
342 skip_bits(&ctx->gb, 3); /* FIXME: unknown meaning! */
343 }
344
345 align_get_bits(&ctx->gb);
346
347 return 0;
348 }
349
350
351 /**
352 * Decode Indeo5 band header.
353 *
354 * @param[in,out] ctx ptr to the decoder context
355 * @param[in,out] band ptr to the band descriptor
356 * @param[in] avctx ptr to the AVCodecContext
357 * @return result code: 0 = OK, -1 = error
358 */
359 static int decode_band_hdr(IVI45DecContext *ctx, IVIBandDesc *band,
360 AVCodecContext *avctx)
361 {
362 int i, ret;
363 uint8_t band_flags;
364
365 band_flags = get_bits(&ctx->gb, 8);
366
367 if (band_flags & 1) {
368 band->is_empty = 1;
369 return 0;
370 }
371
372 band->data_size = (ctx->frame_flags & 0x80) ? get_bits_long(&ctx->gb, 24) : 0;
373
374 band->inherit_mv = band_flags & 2;
375 band->inherit_qdelta = band_flags & 8;
376 band->qdelta_present = band_flags & 4;
377 if (!band->qdelta_present) band->inherit_qdelta = 1;
378
379 /* decode rvmap probability corrections if any */
380 band->num_corr = 0; /* there are no corrections */
381 if (band_flags & 0x10) {
382 band->num_corr = get_bits(&ctx->gb, 8); /* get number of correction pairs */
383 if (band->num_corr > 61) {
384 av_log(avctx, AV_LOG_ERROR, "Too many corrections: %d\n",
385 band->num_corr);
386 return AVERROR_INVALIDDATA;
387 }
388
389 /* read correction pairs */
390 for (i = 0; i < band->num_corr * 2; i++)
391 band->corr[i] = get_bits(&ctx->gb, 8);
392 }
393
394 /* select appropriate rvmap table for this band */
395 band->rvmap_sel = (band_flags & 0x40) ? get_bits(&ctx->gb, 3) : 8;
396
397 /* decode block huffman codebook */
398 ret = ff_ivi_dec_huff_desc(&ctx->gb, band_flags & 0x80, IVI_BLK_HUFF,
399 &band->blk_vlc, avctx);
400 if (ret < 0)
401 return ret;
402
403 band->checksum_present = get_bits1(&ctx->gb);
404 if (band->checksum_present)
405 band->checksum = get_bits(&ctx->gb, 16);
406
407 band->glob_quant = get_bits(&ctx->gb, 5);
408
409 /* skip unknown extension if any */
410 if (band_flags & 0x20) { /* XXX: untested */
411 align_get_bits(&ctx->gb);
412 skip_hdr_extension(&ctx->gb);
413 }
414
415 align_get_bits(&ctx->gb);
416
417 return 0;
418 }
419
420
421 /**
422 * Decode info (block type, cbp, quant delta, motion vector)
423 * for all macroblocks in the current tile.
424 *
425 * @param[in,out] ctx ptr to the decoder context
426 * @param[in,out] band ptr to the band descriptor
427 * @param[in,out] tile ptr to the tile descriptor
428 * @param[in] avctx ptr to the AVCodecContext
429 * @return result code: 0 = OK, -1 = error
430 */
431 static int decode_mb_info(IVI45DecContext *ctx, IVIBandDesc *band,
432 IVITile *tile, AVCodecContext *avctx)
433 {
434 int x, y, mv_x, mv_y, mv_delta, offs, mb_offset,
435 mv_scale, blks_per_mb;
436 IVIMbInfo *mb, *ref_mb;
437 int row_offset = band->mb_size * band->pitch;
438
439 mb = tile->mbs;
440 ref_mb = tile->ref_mbs;
441 offs = tile->ypos * band->pitch + tile->xpos;
442
443 if (!ref_mb &&
444 ((band->qdelta_present && band->inherit_qdelta) || band->inherit_mv))
445 return AVERROR_INVALIDDATA;
446
447 if (tile->num_MBs != IVI_MBs_PER_TILE(tile->width, tile->height, band->mb_size)) {
448 av_log(avctx, AV_LOG_ERROR, "Allocated tile size %d mismatches parameters %d\n",
449 tile->num_MBs, IVI_MBs_PER_TILE(tile->width, tile->height, band->mb_size));
450 return AVERROR_INVALIDDATA;
451 }
452
453 /* scale factor for motion vectors */
454 mv_scale = (ctx->planes[0].bands[0].mb_size >> 3) - (band->mb_size >> 3);
455 mv_x = mv_y = 0;
456
457 for (y = tile->ypos; y < (tile->ypos + tile->height); y += band->mb_size) {
458 mb_offset = offs;
459
460 for (x = tile->xpos; x < (tile->xpos + tile->width); x += band->mb_size) {
461 mb->xpos = x;
462 mb->ypos = y;
463 mb->buf_offs = mb_offset;
464
465 if (get_bits1(&ctx->gb)) {
466 if (ctx->frame_type == FRAMETYPE_INTRA) {
467 av_log(avctx, AV_LOG_ERROR, "Empty macroblock in an INTRA picture!\n");
468 return AVERROR_INVALIDDATA;
469 }
470 mb->type = 1; /* empty macroblocks are always INTER */
471 mb->cbp = 0; /* all blocks are empty */
472
473 mb->q_delta = 0;
474 if (!band->plane && !band->band_num && (ctx->frame_flags & 8)) {
475 mb->q_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
476 IVI_VLC_BITS, 1);
477 mb->q_delta = IVI_TOSIGNED(mb->q_delta);
478 }
479
480 mb->mv_x = mb->mv_y = 0; /* no motion vector coded */
481 if (band->inherit_mv){
482 /* motion vector inheritance */
483 if (mv_scale) {
484 mb->mv_x = ivi_scale_mv(ref_mb->mv_x, mv_scale);
485 mb->mv_y = ivi_scale_mv(ref_mb->mv_y, mv_scale);
486 } else {
487 mb->mv_x = ref_mb->mv_x;
488 mb->mv_y = ref_mb->mv_y;
489 }
490 }
491 } else {
492 if (band->inherit_mv) {
493 mb->type = ref_mb->type; /* copy mb_type from corresponding reference mb */
494 } else if (ctx->frame_type == FRAMETYPE_INTRA) {
495 mb->type = 0; /* mb_type is always INTRA for intra-frames */
496 } else {
497 mb->type = get_bits1(&ctx->gb);
498 }
499
500 blks_per_mb = band->mb_size != band->blk_size ? 4 : 1;
501 mb->cbp = get_bits(&ctx->gb, blks_per_mb);
502
503 mb->q_delta = 0;
504 if (band->qdelta_present) {
505 if (band->inherit_qdelta) {
506 if (ref_mb) mb->q_delta = ref_mb->q_delta;
507 } else if (mb->cbp || (!band->plane && !band->band_num &&
508 (ctx->frame_flags & 8))) {
509 mb->q_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
510 IVI_VLC_BITS, 1);
511 mb->q_delta = IVI_TOSIGNED(mb->q_delta);
512 }
513 }
514
515 if (!mb->type) {
516 mb->mv_x = mb->mv_y = 0; /* there is no motion vector in intra-macroblocks */
517 } else {
518 if (band->inherit_mv){
519 /* motion vector inheritance */
520 if (mv_scale) {
521 mb->mv_x = ivi_scale_mv(ref_mb->mv_x, mv_scale);
522 mb->mv_y = ivi_scale_mv(ref_mb->mv_y, mv_scale);
523 } else {
524 mb->mv_x = ref_mb->mv_x;
525 mb->mv_y = ref_mb->mv_y;
526 }
527 } else {
528 /* decode motion vector deltas */
529 mv_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
530 IVI_VLC_BITS, 1);
531 mv_y += IVI_TOSIGNED(mv_delta);
532 mv_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
533 IVI_VLC_BITS, 1);
534 mv_x += IVI_TOSIGNED(mv_delta);
535 mb->mv_x = mv_x;
536 mb->mv_y = mv_y;
537 }
538 }
539 }
540
541 mb++;
542 if (ref_mb)
543 ref_mb++;
544 mb_offset += band->mb_size;
545 }
546
547 offs += row_offset;
548 }
549
550 align_get_bits(&ctx->gb);
551
552 return 0;
553 }
554
555
556 /**
557 * Switch buffers.
558 *
559 * @param[in,out] ctx ptr to the decoder context
560 */
561 static void switch_buffers(IVI45DecContext *ctx)
562 {
563 switch (ctx->prev_frame_type) {
564 case FRAMETYPE_INTRA:
565 case FRAMETYPE_INTER:
566 ctx->buf_switch ^= 1;
567 ctx->dst_buf = ctx->buf_switch;
568 ctx->ref_buf = ctx->buf_switch ^ 1;
569 break;
570 case FRAMETYPE_INTER_SCAL:
571 if (!ctx->inter_scal) {
572 ctx->ref2_buf = 2;
573 ctx->inter_scal = 1;
574 }
575 FFSWAP(int, ctx->dst_buf, ctx->ref2_buf);
576 ctx->ref_buf = ctx->ref2_buf;
577 break;
578 case FRAMETYPE_INTER_NOREF:
579 break;
580 }
581
582 switch (ctx->frame_type) {
583 case FRAMETYPE_INTRA:
584 ctx->buf_switch = 0;
585 /* FALLTHROUGH */
586 case FRAMETYPE_INTER:
587 ctx->inter_scal = 0;
588 ctx->dst_buf = ctx->buf_switch;
589 ctx->ref_buf = ctx->buf_switch ^ 1;
590 break;
591 case FRAMETYPE_INTER_SCAL:
592 case FRAMETYPE_INTER_NOREF:
593 case FRAMETYPE_NULL:
594 break;
595 }
596 }
597
598
599 static int is_nonnull_frame(IVI45DecContext *ctx)
600 {
601 return ctx->frame_type != FRAMETYPE_NULL;
602 }
603
604
605 /**
606 * Initialize Indeo5 decoder.
607 */
608 static av_cold int decode_init(AVCodecContext *avctx)
609 {
610 IVI45DecContext *ctx = avctx->priv_data;
611 int result;
612
613 ff_ivi_init_static_vlc();
614
615 /* copy rvmap tables in our context so we can apply changes to them */
616 memcpy(ctx->rvmap_tabs, ff_ivi_rvmap_tabs, sizeof(ff_ivi_rvmap_tabs));
617
618 /* set the initial picture layout according to the basic profile:
619 there is only one band per plane (no scalability), only one tile (no local decoding)
620 and picture format = YVU9 */
621 ctx->pic_conf.pic_width = avctx->width;
622 ctx->pic_conf.pic_height = avctx->height;
623 ctx->pic_conf.chroma_width = (avctx->width + 3) >> 2;
624 ctx->pic_conf.chroma_height = (avctx->height + 3) >> 2;
625 ctx->pic_conf.tile_width = avctx->width;
626 ctx->pic_conf.tile_height = avctx->height;
627 ctx->pic_conf.luma_bands = ctx->pic_conf.chroma_bands = 1;
628
629 result = ff_ivi_init_planes(ctx->planes, &ctx->pic_conf);
630 if (result) {
631 av_log(avctx, AV_LOG_ERROR, "Couldn't allocate color planes!\n");
632 return AVERROR_INVALIDDATA;
633 }
634
635 ctx->buf_switch = 0;
636 ctx->inter_scal = 0;
637
638 ctx->decode_pic_hdr = decode_pic_hdr;
639 ctx->decode_band_hdr = decode_band_hdr;
640 ctx->decode_mb_info = decode_mb_info;
641 ctx->switch_buffers = switch_buffers;
642 ctx->is_nonnull_frame = is_nonnull_frame;
643
644 avctx->pix_fmt = AV_PIX_FMT_YUV410P;
645
646 return 0;
647 }
648
649
650 AVCodec ff_indeo5_decoder = {
651 .name = "indeo5",
652 .long_name = NULL_IF_CONFIG_SMALL("Intel Indeo Video Interactive 5"),
653 .type = AVMEDIA_TYPE_VIDEO,
654 .id = AV_CODEC_ID_INDEO5,
655 .priv_data_size = sizeof(IVI45DecContext),
656 .init = decode_init,
657 .close = ff_ivi_decode_close,
658 .decode = ff_ivi_decode_frame,
659 .capabilities = CODEC_CAP_DR1,
660 };