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1 | /* Electronic Arts Multimedia File Demuxer |
2 | * Copyright (c) 2004 The FFmpeg Project | |
3 | * Copyright (c) 2006-2008 Peter Ross | |
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 | * Electronic Arts Multimedia file demuxer (WVE/UV2/etc.) | |
25 | * by Robin Kay (komadori at gekkou.co.uk) | |
26 | */ | |
27 | ||
28 | #include <inttypes.h> | |
29 | ||
30 | #include "libavutil/intreadwrite.h" | |
31 | #include "avformat.h" | |
32 | #include "internal.h" | |
33 | ||
34 | #define SCHl_TAG MKTAG('S', 'C', 'H', 'l') | |
35 | #define SEAD_TAG MKTAG('S', 'E', 'A', 'D') /* Sxxx header */ | |
36 | #define SNDC_TAG MKTAG('S', 'N', 'D', 'C') /* Sxxx data */ | |
37 | #define SEND_TAG MKTAG('S', 'E', 'N', 'D') /* Sxxx end */ | |
38 | #define SHEN_TAG MKTAG('S', 'H', 'E', 'N') /* SxEN header */ | |
39 | #define SDEN_TAG MKTAG('S', 'D', 'E', 'N') /* SxEN data */ | |
40 | #define SEEN_TAG MKTAG('S', 'E', 'E', 'N') /* SxEN end */ | |
41 | #define ISNh_TAG MKTAG('1', 'S', 'N', 'h') /* 1SNx header */ | |
42 | #define EACS_TAG MKTAG('E', 'A', 'C', 'S') | |
43 | #define ISNd_TAG MKTAG('1', 'S', 'N', 'd') /* 1SNx data */ | |
44 | #define ISNe_TAG MKTAG('1', 'S', 'N', 'e') /* 1SNx end */ | |
45 | #define PT00_TAG MKTAG('P', 'T', 0x0, 0x0) | |
46 | #define GSTR_TAG MKTAG('G', 'S', 'T', 'R') | |
47 | #define SCDl_TAG MKTAG('S', 'C', 'D', 'l') | |
48 | #define SCEl_TAG MKTAG('S', 'C', 'E', 'l') | |
49 | #define kVGT_TAG MKTAG('k', 'V', 'G', 'T') /* TGV I-frame */ | |
50 | #define fVGT_TAG MKTAG('f', 'V', 'G', 'T') /* TGV P-frame */ | |
51 | #define mTCD_TAG MKTAG('m', 'T', 'C', 'D') /* MDEC */ | |
52 | #define MADk_TAG MKTAG('M', 'A', 'D', 'k') /* MAD I-frame */ | |
53 | #define MADm_TAG MKTAG('M', 'A', 'D', 'm') /* MAD P-frame */ | |
54 | #define MADe_TAG MKTAG('M', 'A', 'D', 'e') /* MAD lqp-frame */ | |
55 | #define MPCh_TAG MKTAG('M', 'P', 'C', 'h') /* MPEG-2 */ | |
56 | #define TGQs_TAG MKTAG('T', 'G', 'Q', 's') /* TGQ I-frame (appears in .TGQ files) */ | |
57 | #define pQGT_TAG MKTAG('p', 'Q', 'G', 'T') /* TGQ I-frame (appears in .UV files) */ | |
58 | #define pIQT_TAG MKTAG('p', 'I', 'Q', 'T') /* TQI/UV2 I-frame (.UV2/.WVE) */ | |
59 | #define MVhd_TAG MKTAG('M', 'V', 'h', 'd') | |
60 | #define MV0K_TAG MKTAG('M', 'V', '0', 'K') | |
61 | #define MV0F_TAG MKTAG('M', 'V', '0', 'F') | |
62 | #define MVIh_TAG MKTAG('M', 'V', 'I', 'h') /* CMV header */ | |
63 | #define MVIf_TAG MKTAG('M', 'V', 'I', 'f') /* CMV I-frame */ | |
64 | ||
65 | typedef struct EaDemuxContext { | |
66 | int big_endian; | |
67 | ||
68 | enum AVCodecID video_codec; | |
69 | AVRational time_base; | |
70 | int width, height; | |
71 | int nb_frames; | |
72 | int video_stream_index; | |
73 | ||
74 | enum AVCodecID audio_codec; | |
75 | int audio_stream_index; | |
76 | ||
77 | int bytes; | |
78 | int sample_rate; | |
79 | int num_channels; | |
80 | int num_samples; | |
81 | } EaDemuxContext; | |
82 | ||
83 | static uint32_t read_arbitrary(AVIOContext *pb) | |
84 | { | |
85 | uint8_t size, byte; | |
86 | int i; | |
87 | uint32_t word; | |
88 | ||
89 | size = avio_r8(pb); | |
90 | ||
91 | word = 0; | |
92 | for (i = 0; i < size; i++) { | |
93 | byte = avio_r8(pb); | |
94 | word <<= 8; | |
95 | word |= byte; | |
96 | } | |
97 | ||
98 | return word; | |
99 | } | |
100 | ||
101 | static int process_audio_header_elements(AVFormatContext *s) | |
102 | { | |
103 | EaDemuxContext *ea = s->priv_data; | |
104 | AVIOContext *pb = s->pb; | |
105 | int in_header = 1; | |
106 | int compression_type = -1, revision = -1, revision2 = -1; | |
107 | ||
108 | ea->bytes = 2; | |
109 | ea->sample_rate = -1; | |
110 | ea->num_channels = 1; | |
111 | ||
112 | while (!avio_feof(pb) && in_header) { | |
113 | int in_subheader; | |
114 | uint8_t byte; | |
115 | byte = avio_r8(pb); | |
116 | ||
117 | switch (byte) { | |
118 | case 0xFD: | |
119 | av_log(s, AV_LOG_DEBUG, "entered audio subheader\n"); | |
120 | in_subheader = 1; | |
121 | while (!avio_feof(pb) && in_subheader) { | |
122 | uint8_t subbyte; | |
123 | subbyte = avio_r8(pb); | |
124 | ||
125 | switch (subbyte) { | |
126 | case 0x80: | |
127 | revision = read_arbitrary(pb); | |
128 | av_log(s, AV_LOG_DEBUG, | |
129 | "revision (element 0x80) set to 0x%08x\n", revision); | |
130 | break; | |
131 | case 0x82: | |
132 | ea->num_channels = read_arbitrary(pb); | |
133 | av_log(s, AV_LOG_DEBUG, | |
134 | "num_channels (element 0x82) set to 0x%08x\n", | |
135 | ea->num_channels); | |
136 | break; | |
137 | case 0x83: | |
138 | compression_type = read_arbitrary(pb); | |
139 | av_log(s, AV_LOG_DEBUG, | |
140 | "compression_type (element 0x83) set to 0x%08x\n", | |
141 | compression_type); | |
142 | break; | |
143 | case 0x84: | |
144 | ea->sample_rate = read_arbitrary(pb); | |
145 | av_log(s, AV_LOG_DEBUG, | |
146 | "sample_rate (element 0x84) set to %i\n", | |
147 | ea->sample_rate); | |
148 | break; | |
149 | case 0x85: | |
150 | ea->num_samples = read_arbitrary(pb); | |
151 | av_log(s, AV_LOG_DEBUG, | |
152 | "num_samples (element 0x85) set to 0x%08x\n", | |
153 | ea->num_samples); | |
154 | break; | |
155 | case 0x8A: | |
156 | av_log(s, AV_LOG_DEBUG, | |
157 | "element 0x%02x set to 0x%08"PRIx32"\n", | |
158 | subbyte, read_arbitrary(pb)); | |
159 | av_log(s, AV_LOG_DEBUG, "exited audio subheader\n"); | |
160 | in_subheader = 0; | |
161 | break; | |
162 | case 0xA0: | |
163 | revision2 = read_arbitrary(pb); | |
164 | av_log(s, AV_LOG_DEBUG, | |
165 | "revision2 (element 0xA0) set to 0x%08x\n", | |
166 | revision2); | |
167 | break; | |
168 | case 0xFF: | |
169 | av_log(s, AV_LOG_DEBUG, | |
170 | "end of header block reached (within audio subheader)\n"); | |
171 | in_subheader = 0; | |
172 | in_header = 0; | |
173 | break; | |
174 | default: | |
175 | av_log(s, AV_LOG_DEBUG, | |
176 | "element 0x%02x set to 0x%08"PRIx32"\n", | |
177 | subbyte, read_arbitrary(pb)); | |
178 | break; | |
179 | } | |
180 | } | |
181 | break; | |
182 | case 0xFF: | |
183 | av_log(s, AV_LOG_DEBUG, "end of header block reached\n"); | |
184 | in_header = 0; | |
185 | break; | |
186 | default: | |
187 | av_log(s, AV_LOG_DEBUG, | |
188 | "header element 0x%02x set to 0x%08"PRIx32"\n", | |
189 | byte, read_arbitrary(pb)); | |
190 | break; | |
191 | } | |
192 | } | |
193 | ||
194 | switch (compression_type) { | |
195 | case 0: | |
196 | ea->audio_codec = AV_CODEC_ID_PCM_S16LE; | |
197 | break; | |
198 | case 7: | |
199 | ea->audio_codec = AV_CODEC_ID_ADPCM_EA; | |
200 | break; | |
201 | case -1: | |
202 | switch (revision) { | |
203 | case 1: | |
204 | ea->audio_codec = AV_CODEC_ID_ADPCM_EA_R1; | |
205 | break; | |
206 | case 2: | |
207 | ea->audio_codec = AV_CODEC_ID_ADPCM_EA_R2; | |
208 | break; | |
209 | case 3: | |
210 | ea->audio_codec = AV_CODEC_ID_ADPCM_EA_R3; | |
211 | break; | |
212 | case -1: | |
213 | break; | |
214 | default: | |
215 | avpriv_request_sample(s, "stream type; revision=%i", revision); | |
216 | return 0; | |
217 | } | |
218 | switch (revision2) { | |
219 | case 8: | |
220 | ea->audio_codec = AV_CODEC_ID_PCM_S16LE_PLANAR; | |
221 | break; | |
222 | case 10: | |
223 | switch (revision) { | |
224 | case -1: | |
225 | case 2: ea->audio_codec = AV_CODEC_ID_ADPCM_EA_R1; break; | |
226 | case 3: ea->audio_codec = AV_CODEC_ID_ADPCM_EA_R2; break; | |
227 | default: | |
228 | avpriv_request_sample(s, "stream type; revision=%i, revision2=%i", revision, revision2); | |
229 | return 0; | |
230 | } | |
231 | break; | |
232 | case 16: | |
233 | ea->audio_codec = AV_CODEC_ID_MP3; | |
234 | break; | |
235 | case -1: | |
236 | break; | |
237 | default: | |
238 | ea->audio_codec = AV_CODEC_ID_NONE; | |
239 | avpriv_request_sample(s, "stream type; revision2=%i", revision2); | |
240 | return 0; | |
241 | } | |
242 | break; | |
243 | default: | |
244 | avpriv_request_sample(s, | |
245 | "stream type; compression_type=%i", | |
246 | compression_type); | |
247 | return 0; | |
248 | } | |
249 | ||
250 | if (ea->sample_rate == -1) | |
251 | ea->sample_rate = revision == 3 ? 48000 : 22050; | |
252 | ||
253 | return 1; | |
254 | } | |
255 | ||
256 | static void process_audio_header_eacs(AVFormatContext *s) | |
257 | { | |
258 | EaDemuxContext *ea = s->priv_data; | |
259 | AVIOContext *pb = s->pb; | |
260 | int compression_type; | |
261 | ||
262 | ea->sample_rate = ea->big_endian ? avio_rb32(pb) : avio_rl32(pb); | |
263 | ea->bytes = avio_r8(pb); /* 1=8-bit, 2=16-bit */ | |
264 | ea->num_channels = avio_r8(pb); | |
265 | compression_type = avio_r8(pb); | |
266 | avio_skip(pb, 13); | |
267 | ||
268 | switch (compression_type) { | |
269 | case 0: | |
270 | switch (ea->bytes) { | |
271 | case 1: | |
272 | ea->audio_codec = AV_CODEC_ID_PCM_S8; | |
273 | break; | |
274 | case 2: | |
275 | ea->audio_codec = AV_CODEC_ID_PCM_S16LE; | |
276 | break; | |
277 | } | |
278 | break; | |
279 | case 1: | |
280 | ea->audio_codec = AV_CODEC_ID_PCM_MULAW; | |
281 | ea->bytes = 1; | |
282 | break; | |
283 | case 2: | |
284 | ea->audio_codec = AV_CODEC_ID_ADPCM_IMA_EA_EACS; | |
285 | break; | |
286 | default: | |
287 | avpriv_request_sample(s, | |
288 | "stream type; audio compression_type=%i", | |
289 | compression_type); | |
290 | } | |
291 | } | |
292 | ||
293 | static void process_audio_header_sead(AVFormatContext *s) | |
294 | { | |
295 | EaDemuxContext *ea = s->priv_data; | |
296 | AVIOContext *pb = s->pb; | |
297 | ||
298 | ea->sample_rate = avio_rl32(pb); | |
299 | ea->bytes = avio_rl32(pb); /* 1=8-bit, 2=16-bit */ | |
300 | ea->num_channels = avio_rl32(pb); | |
301 | ea->audio_codec = AV_CODEC_ID_ADPCM_IMA_EA_SEAD; | |
302 | } | |
303 | ||
304 | static void process_video_header_mdec(AVFormatContext *s) | |
305 | { | |
306 | EaDemuxContext *ea = s->priv_data; | |
307 | AVIOContext *pb = s->pb; | |
308 | avio_skip(pb, 4); | |
309 | ea->width = avio_rl16(pb); | |
310 | ea->height = avio_rl16(pb); | |
311 | ea->time_base = (AVRational) { 1, 15 }; | |
312 | ea->video_codec = AV_CODEC_ID_MDEC; | |
313 | } | |
314 | ||
315 | static int process_video_header_vp6(AVFormatContext *s) | |
316 | { | |
317 | EaDemuxContext *ea = s->priv_data; | |
318 | AVIOContext *pb = s->pb; | |
319 | ||
320 | avio_skip(pb, 8); | |
321 | ea->nb_frames = avio_rl32(pb); | |
322 | avio_skip(pb, 4); | |
323 | ea->time_base.den = avio_rl32(pb); | |
324 | ea->time_base.num = avio_rl32(pb); | |
325 | if (ea->time_base.den <= 0 || ea->time_base.num <= 0) { | |
326 | av_log(s, AV_LOG_ERROR, "Timebase is invalid\n"); | |
327 | return AVERROR_INVALIDDATA; | |
328 | } | |
329 | ea->video_codec = AV_CODEC_ID_VP6; | |
330 | ||
331 | return 1; | |
332 | } | |
333 | ||
334 | static void process_video_header_cmv(AVFormatContext *s) | |
335 | { | |
336 | EaDemuxContext *ea = s->priv_data; | |
337 | int fps; | |
338 | ||
339 | avio_skip(s->pb, 10); | |
340 | fps = avio_rl16(s->pb); | |
341 | if (fps) | |
342 | ea->time_base = (AVRational) { 1, fps }; | |
343 | ea->video_codec = AV_CODEC_ID_CMV; | |
344 | } | |
345 | ||
346 | /* Process EA file header. | |
347 | * Return 1 if the EA file is valid and successfully opened, 0 otherwise. */ | |
348 | static int process_ea_header(AVFormatContext *s) | |
349 | { | |
350 | uint32_t blockid, size = 0; | |
351 | EaDemuxContext *ea = s->priv_data; | |
352 | AVIOContext *pb = s->pb; | |
353 | int i; | |
354 | ||
355 | for (i = 0; i < 5 && (!ea->audio_codec || !ea->video_codec); i++) { | |
356 | uint64_t startpos = avio_tell(pb); | |
357 | int err = 0; | |
358 | ||
359 | blockid = avio_rl32(pb); | |
360 | size = avio_rl32(pb); | |
361 | if (i == 0) | |
362 | ea->big_endian = size > av_bswap32(size); | |
363 | if (ea->big_endian) | |
364 | size = av_bswap32(size); | |
365 | ||
366 | if (size < 8) { | |
367 | av_log(s, AV_LOG_ERROR, "chunk size too small\n"); | |
368 | return AVERROR_INVALIDDATA; | |
369 | } | |
370 | ||
371 | switch (blockid) { | |
372 | case ISNh_TAG: | |
373 | if (avio_rl32(pb) != EACS_TAG) { | |
374 | avpriv_request_sample(s, "unknown 1SNh headerid"); | |
375 | return 0; | |
376 | } | |
377 | process_audio_header_eacs(s); | |
378 | break; | |
379 | ||
380 | case SCHl_TAG: | |
381 | case SHEN_TAG: | |
382 | blockid = avio_rl32(pb); | |
383 | if (blockid == GSTR_TAG) { | |
384 | avio_skip(pb, 4); | |
385 | } else if ((blockid & 0xFFFF) != PT00_TAG) { | |
386 | avpriv_request_sample(s, "unknown SCHl headerid"); | |
387 | return 0; | |
388 | } | |
389 | err = process_audio_header_elements(s); | |
390 | break; | |
391 | ||
392 | case SEAD_TAG: | |
393 | process_audio_header_sead(s); | |
394 | break; | |
395 | ||
396 | case MVIh_TAG: | |
397 | process_video_header_cmv(s); | |
398 | break; | |
399 | ||
400 | case kVGT_TAG: | |
401 | ea->video_codec = AV_CODEC_ID_TGV; | |
402 | break; | |
403 | ||
404 | case mTCD_TAG: | |
405 | process_video_header_mdec(s); | |
406 | break; | |
407 | ||
408 | case MPCh_TAG: | |
409 | ea->video_codec = AV_CODEC_ID_MPEG2VIDEO; | |
410 | break; | |
411 | ||
412 | case pQGT_TAG: | |
413 | case TGQs_TAG: | |
414 | ea->video_codec = AV_CODEC_ID_TGQ; | |
415 | ea->time_base = (AVRational) { 1, 15 }; | |
416 | break; | |
417 | ||
418 | case pIQT_TAG: | |
419 | ea->video_codec = AV_CODEC_ID_TQI; | |
420 | ea->time_base = (AVRational) { 1, 15 }; | |
421 | break; | |
422 | ||
423 | case MADk_TAG: | |
424 | ea->video_codec = AV_CODEC_ID_MAD; | |
425 | avio_skip(pb, 6); | |
426 | ea->time_base = (AVRational) { avio_rl16(pb), 1000 }; | |
427 | break; | |
428 | ||
429 | case MVhd_TAG: | |
430 | err = process_video_header_vp6(s); | |
431 | break; | |
432 | } | |
433 | ||
434 | if (err < 0) { | |
435 | av_log(s, AV_LOG_ERROR, "error parsing header: %i\n", err); | |
436 | return err; | |
437 | } | |
438 | ||
439 | avio_seek(pb, startpos + size, SEEK_SET); | |
440 | } | |
441 | ||
442 | avio_seek(pb, 0, SEEK_SET); | |
443 | ||
444 | return 1; | |
445 | } | |
446 | ||
447 | static int ea_probe(AVProbeData *p) | |
448 | { | |
449 | unsigned big_endian, size; | |
450 | ||
451 | switch (AV_RL32(&p->buf[0])) { | |
452 | case ISNh_TAG: | |
453 | case SCHl_TAG: | |
454 | case SEAD_TAG: | |
455 | case SHEN_TAG: | |
456 | case kVGT_TAG: | |
457 | case MADk_TAG: | |
458 | case MPCh_TAG: | |
459 | case MVhd_TAG: | |
460 | case MVIh_TAG: | |
461 | break; | |
462 | default: | |
463 | return 0; | |
464 | } | |
465 | size = AV_RL32(&p->buf[4]); | |
466 | big_endian = size > 0x000FFFFF; | |
467 | if (big_endian) | |
468 | size = av_bswap32(size); | |
469 | if (size > 0xfffff || size < 8) | |
470 | return 0; | |
471 | ||
472 | return AVPROBE_SCORE_MAX; | |
473 | } | |
474 | ||
475 | static int ea_read_header(AVFormatContext *s) | |
476 | { | |
477 | EaDemuxContext *ea = s->priv_data; | |
478 | AVStream *st; | |
479 | ||
480 | if (process_ea_header(s)<=0) | |
481 | return AVERROR(EIO); | |
482 | ||
483 | if (ea->video_codec) { | |
484 | /* initialize the video decoder stream */ | |
485 | st = avformat_new_stream(s, NULL); | |
486 | if (!st) | |
487 | return AVERROR(ENOMEM); | |
488 | ea->video_stream_index = st->index; | |
489 | st->codec->codec_type = AVMEDIA_TYPE_VIDEO; | |
490 | st->codec->codec_id = ea->video_codec; | |
491 | // parsing is necessary to make FFmpeg generate correct timestamps | |
492 | if (st->codec->codec_id == AV_CODEC_ID_MPEG2VIDEO) | |
493 | st->need_parsing = AVSTREAM_PARSE_HEADERS; | |
494 | st->codec->codec_tag = 0; /* no fourcc */ | |
495 | st->codec->width = ea->width; | |
496 | st->codec->height = ea->height; | |
497 | st->duration = st->nb_frames = ea->nb_frames; | |
498 | if (ea->time_base.num) | |
499 | avpriv_set_pts_info(st, 64, ea->time_base.num, ea->time_base.den); | |
500 | st->r_frame_rate = | |
501 | st->avg_frame_rate = av_inv_q(ea->time_base); | |
502 | } | |
503 | ||
504 | if (ea->audio_codec) { | |
505 | if (ea->num_channels <= 0 || ea->num_channels > 2) { | |
506 | av_log(s, AV_LOG_WARNING, | |
507 | "Unsupported number of channels: %d\n", ea->num_channels); | |
508 | ea->audio_codec = 0; | |
509 | return 1; | |
510 | } | |
511 | if (ea->sample_rate <= 0) { | |
512 | av_log(s, AV_LOG_ERROR, | |
513 | "Unsupported sample rate: %d\n", ea->sample_rate); | |
514 | ea->audio_codec = 0; | |
515 | return 1; | |
516 | } | |
517 | if (ea->bytes <= 0) { | |
518 | av_log(s, AV_LOG_ERROR, | |
519 | "Invalid number of bytes per sample: %d\n", ea->bytes); | |
520 | ea->audio_codec = AV_CODEC_ID_NONE; | |
521 | return 1; | |
522 | } | |
523 | ||
524 | /* initialize the audio decoder stream */ | |
525 | st = avformat_new_stream(s, NULL); | |
526 | if (!st) | |
527 | return AVERROR(ENOMEM); | |
528 | avpriv_set_pts_info(st, 33, 1, ea->sample_rate); | |
529 | st->codec->codec_type = AVMEDIA_TYPE_AUDIO; | |
530 | st->codec->codec_id = ea->audio_codec; | |
531 | st->codec->codec_tag = 0; /* no tag */ | |
532 | st->codec->channels = ea->num_channels; | |
533 | st->codec->sample_rate = ea->sample_rate; | |
534 | st->codec->bits_per_coded_sample = ea->bytes * 8; | |
535 | st->codec->bit_rate = st->codec->channels * | |
536 | st->codec->sample_rate * | |
537 | st->codec->bits_per_coded_sample / 4; | |
538 | st->codec->block_align = st->codec->channels * | |
539 | st->codec->bits_per_coded_sample; | |
540 | ea->audio_stream_index = st->index; | |
541 | st->start_time = 0; | |
542 | } | |
543 | ||
544 | return 1; | |
545 | } | |
546 | ||
547 | static int ea_read_packet(AVFormatContext *s, AVPacket *pkt) | |
548 | { | |
549 | EaDemuxContext *ea = s->priv_data; | |
550 | AVIOContext *pb = s->pb; | |
551 | int partial_packet = 0; | |
552 | unsigned int chunk_type, chunk_size; | |
553 | int ret = 0, packet_read = 0, key = 0; | |
554 | int av_uninit(num_samples); | |
555 | ||
556 | while (!packet_read || partial_packet) { | |
557 | chunk_type = avio_rl32(pb); | |
558 | chunk_size = ea->big_endian ? avio_rb32(pb) : avio_rl32(pb); | |
559 | if (chunk_size < 8) | |
560 | return AVERROR_INVALIDDATA; | |
561 | chunk_size -= 8; | |
562 | ||
563 | switch (chunk_type) { | |
564 | /* audio data */ | |
565 | case ISNh_TAG: | |
566 | /* header chunk also contains data; skip over the header portion */ | |
567 | if (chunk_size < 32) | |
568 | return AVERROR_INVALIDDATA; | |
569 | avio_skip(pb, 32); | |
570 | chunk_size -= 32; | |
571 | case ISNd_TAG: | |
572 | case SCDl_TAG: | |
573 | case SNDC_TAG: | |
574 | case SDEN_TAG: | |
575 | if (!ea->audio_codec) { | |
576 | avio_skip(pb, chunk_size); | |
577 | break; | |
578 | } else if (ea->audio_codec == AV_CODEC_ID_PCM_S16LE_PLANAR || | |
579 | ea->audio_codec == AV_CODEC_ID_MP3) { | |
580 | num_samples = avio_rl32(pb); | |
581 | avio_skip(pb, 8); | |
582 | chunk_size -= 12; | |
583 | } | |
584 | ||
585 | if (partial_packet) { | |
586 | avpriv_request_sample(s, "video header followed by audio packet"); | |
587 | av_free_packet(pkt); | |
588 | partial_packet = 0; | |
589 | } | |
590 | ||
591 | if (!chunk_size) | |
592 | continue; | |
593 | ||
594 | ret = av_get_packet(pb, pkt, chunk_size); | |
595 | if (ret < 0) | |
596 | return ret; | |
597 | pkt->stream_index = ea->audio_stream_index; | |
598 | ||
599 | switch (ea->audio_codec) { | |
600 | case AV_CODEC_ID_ADPCM_EA: | |
601 | case AV_CODEC_ID_ADPCM_EA_R1: | |
602 | case AV_CODEC_ID_ADPCM_EA_R2: | |
603 | case AV_CODEC_ID_ADPCM_IMA_EA_EACS: | |
604 | case AV_CODEC_ID_ADPCM_EA_R3: | |
605 | if (pkt->size < 4) { | |
606 | av_log(s, AV_LOG_ERROR, "Packet is too short\n"); | |
607 | av_free_packet(pkt); | |
608 | return AVERROR_INVALIDDATA; | |
609 | } | |
610 | if (ea->audio_codec == AV_CODEC_ID_ADPCM_EA_R3) | |
611 | pkt->duration = AV_RB32(pkt->data); | |
612 | else | |
613 | pkt->duration = AV_RL32(pkt->data); | |
614 | break; | |
615 | case AV_CODEC_ID_ADPCM_IMA_EA_SEAD: | |
616 | pkt->duration = ret * 2 / ea->num_channels; | |
617 | break; | |
618 | case AV_CODEC_ID_PCM_S16LE_PLANAR: | |
619 | case AV_CODEC_ID_MP3: | |
620 | pkt->duration = num_samples; | |
621 | break; | |
622 | default: | |
623 | pkt->duration = chunk_size / (ea->bytes * ea->num_channels); | |
624 | } | |
625 | ||
626 | packet_read = 1; | |
627 | break; | |
628 | ||
629 | /* ending tag */ | |
630 | case 0: | |
631 | case ISNe_TAG: | |
632 | case SCEl_TAG: | |
633 | case SEND_TAG: | |
634 | case SEEN_TAG: | |
635 | ret = AVERROR(EIO); | |
636 | packet_read = 1; | |
637 | break; | |
638 | ||
639 | case MVIh_TAG: | |
640 | case kVGT_TAG: | |
641 | case pQGT_TAG: | |
642 | case TGQs_TAG: | |
643 | case MADk_TAG: | |
644 | key = AV_PKT_FLAG_KEY; | |
645 | case MVIf_TAG: | |
646 | case fVGT_TAG: | |
647 | case MADm_TAG: | |
648 | case MADe_TAG: | |
649 | avio_seek(pb, -8, SEEK_CUR); // include chunk preamble | |
650 | chunk_size += 8; | |
651 | goto get_video_packet; | |
652 | ||
653 | case mTCD_TAG: | |
654 | if (chunk_size < 8) | |
655 | return AVERROR_INVALIDDATA; | |
656 | ||
657 | avio_skip(pb, 8); // skip ea DCT header | |
658 | chunk_size -= 8; | |
659 | goto get_video_packet; | |
660 | ||
661 | case MV0K_TAG: | |
662 | case MPCh_TAG: | |
663 | case pIQT_TAG: | |
664 | key = AV_PKT_FLAG_KEY; | |
665 | case MV0F_TAG: | |
666 | get_video_packet: | |
667 | if (!chunk_size) | |
668 | continue; | |
669 | ||
670 | if (partial_packet) { | |
671 | ret = av_append_packet(pb, pkt, chunk_size); | |
672 | } else | |
673 | ret = av_get_packet(pb, pkt, chunk_size); | |
674 | if (ret < 0) { | |
675 | packet_read = 1; | |
676 | break; | |
677 | } | |
678 | partial_packet = chunk_type == MVIh_TAG; | |
679 | pkt->stream_index = ea->video_stream_index; | |
680 | pkt->flags |= key; | |
681 | packet_read = 1; | |
682 | break; | |
683 | ||
684 | default: | |
685 | avio_skip(pb, chunk_size); | |
686 | break; | |
687 | } | |
688 | } | |
689 | ||
690 | if (ret < 0 && partial_packet) | |
691 | av_free_packet(pkt); | |
692 | return ret; | |
693 | } | |
694 | ||
695 | AVInputFormat ff_ea_demuxer = { | |
696 | .name = "ea", | |
697 | .long_name = NULL_IF_CONFIG_SMALL("Electronic Arts Multimedia"), | |
698 | .priv_data_size = sizeof(EaDemuxContext), | |
699 | .read_probe = ea_probe, | |
700 | .read_header = ea_read_header, | |
701 | .read_packet = ea_read_packet, | |
702 | }; |