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authorSean Bartell <wingedtachikoma@gmail.com>2011-06-24 01:25:21 -0400
committerNils Wallménius <nils@rockbox.org>2012-03-18 12:00:39 +0100
commitb5716df4cb2837bbbc42195cf1aefcf03e21d6a6 (patch)
tree130cd712e2e00893b6df9959a375a8d9523a1aca /apps/metadata/wave.c
parent24bd9d5393dbe39a5c6194877bc00ede669b1d5d (diff)
downloadrockbox-b5716df4cb2837bbbc42195cf1aefcf03e21d6a6.tar.gz
rockbox-b5716df4cb2837bbbc42195cf1aefcf03e21d6a6.zip
Build librbcodec with DSP and metadata.
All associated files are moved to /lib/rbcodec. Change-Id: I572ddd2b8a996aae1e98c081d06b1ed356dce222
Diffstat (limited to 'apps/metadata/wave.c')
-rw-r--r--apps/metadata/wave.c432
1 files changed, 0 insertions, 432 deletions
diff --git a/apps/metadata/wave.c b/apps/metadata/wave.c
deleted file mode 100644
index 45acea1fa1..0000000000
--- a/apps/metadata/wave.c
+++ /dev/null
@@ -1,432 +0,0 @@
1/***************************************************************************
2 * __________ __ ___.
3 * Open \______ \ ____ ____ | | _\_ |__ _______ ___
4 * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
5 * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
6 * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
7 * \/ \/ \/ \/ \/
8 * $Id$
9 *
10 * Copyright (C) 2005 Dave Chapman
11 * Copyright (C) 2010 Yoshihisa Uchida
12 *
13 * This program is free software; you can redistribute it and/or
14 * modify it under the terms of the GNU General Public License
15 * as published by the Free Software Foundation; either version 2
16 * of the License, or (at your option) any later version.
17 *
18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
19 * KIND, either express or implied.
20 *
21 ****************************************************************************/
22#include <stdio.h>
23#include <string.h>
24#include <inttypes.h>
25
26#include "system.h"
27#include "metadata.h"
28#include "metadata_common.h"
29#include "metadata_parsers.h"
30#include "rbunicode.h"
31#include "logf.h"
32
33#ifdef DEBUGF
34#undef DEBUGF
35#define DEBUGF(...)
36#endif
37
38/* Wave(RIFF)/Wave64 format */
39
40
41# define AV_WL32(p, d) do { \
42 ((uint8_t*)(p))[0] = (d); \
43 ((uint8_t*)(p))[1] = (d)>>8; \
44 ((uint8_t*)(p))[2] = (d)>>16; \
45 ((uint8_t*)(p))[3] = (d)>>24; \
46 } while(0)
47# define AV_WL16(p, d) do { \
48 ((uint8_t*)(p))[0] = (d); \
49 ((uint8_t*)(p))[1] = (d)>>8; \
50 } while(0)
51
52enum {
53 RIFF_CHUNK = 0,
54 WAVE_CHUNK,
55 FMT_CHUNK,
56 FACT_CHUNK,
57 DATA_CHUNK,
58 LIST_CHUNK,
59};
60
61/* Wave chunk names */
62#define WAVE_CHUNKNAME_LENGTH 4
63#define WAVE_CHUNKSIZE_LENGTH 4
64
65static const unsigned char * const wave_chunklist
66 = "RIFF"
67 "WAVE"
68 "fmt "
69 "fact"
70 "data"
71 "LIST";
72
73/* Wave64 GUIDs */
74#define WAVE64_CHUNKNAME_LENGTH 16
75#define WAVE64_CHUNKSIZE_LENGTH 8
76
77static const unsigned char * const wave64_chunklist
78 = "riff\x2e\x91\xcf\x11\xa5\xd6\x28\xdb\x04\xc1\x00\x00"
79 "wave\xf3\xac\xd3\x11\x8c\xd1\x00\xc0\x4f\x8e\xdb\x8a"
80 "fmt \xf3\xac\xd3\x11\x8c\xd1\x00\xc0\x4f\x8e\xdb\x8a"
81 "fact\xf3\xac\xd3\x11\x8c\xd1\x00\xc0\x4f\x8e\xdb\x8a"
82 "data\xf3\xac\xd3\x11\x8c\xd1\x00\xc0\x4f\x8e\xdb\x8a"
83 "\xbc\x94\x5f\x92\x5a\x52\xd2\x11\x86\xdc\x00\xc0\x4f\x8e\xdb\x8a";
84
85/* list/info chunk */
86
87struct info_chunk {
88 const unsigned char* tag;
89 size_t offset;
90};
91
92/* info chunk names are common wave/wave64 */
93static const struct info_chunk info_chunks[] = {
94 { "INAM", offsetof(struct mp3entry, title), }, /* title */
95 { "IART", offsetof(struct mp3entry, artist), }, /* artist */
96 { "ISBJ", offsetof(struct mp3entry, albumartist), }, /* albumartist */
97 { "IPRD", offsetof(struct mp3entry, album), }, /* album */
98 { "IWRI", offsetof(struct mp3entry, composer), }, /* composer */
99 { "ICMT", offsetof(struct mp3entry, comment), }, /* comment */
100 { "ISRF", offsetof(struct mp3entry, grouping), }, /* grouping */
101 { "IGNR", offsetof(struct mp3entry, genre_string), }, /* genre */
102 { "ICRD", offsetof(struct mp3entry, year_string), }, /* date */
103 { "IPRT", offsetof(struct mp3entry, track_string), }, /* track/trackcount */
104 { "IFRM", offsetof(struct mp3entry, disc_string), }, /* disc/disccount */
105};
106
107#define INFO_CHUNK_COUNT ((int)ARRAYLEN(info_chunks))
108
109/* support formats */
110enum
111{
112 WAVE_FORMAT_PCM = 0x0001, /* Microsoft PCM Format */
113 WAVE_FORMAT_ADPCM = 0x0002, /* Microsoft ADPCM Format */
114 WAVE_FORMAT_IEEE_FLOAT = 0x0003, /* IEEE Float */
115 WAVE_FORMAT_ALAW = 0x0006, /* Microsoft ALAW */
116 WAVE_FORMAT_MULAW = 0x0007, /* Microsoft MULAW */
117 WAVE_FORMAT_DVI_ADPCM = 0x0011, /* Intel's DVI ADPCM */
118 WAVE_FORMAT_DIALOGIC_OKI_ADPCM = 0x0017, /* Dialogic OKI ADPCM */
119 WAVE_FORMAT_YAMAHA_ADPCM = 0x0020, /* Yamaha ADPCM */
120 WAVE_FORMAT_XBOX_ADPCM = 0x0069, /* XBOX ADPCM */
121 IBM_FORMAT_MULAW = 0x0101, /* same as WAVE_FORMAT_MULAW */
122 IBM_FORMAT_ALAW = 0x0102, /* same as WAVE_FORMAT_ALAW */
123 WAVE_FORMAT_ATRAC3 = 0x0270, /* Atrac3 stream */
124 WAVE_FORMAT_SWF_ADPCM = 0x5346, /* Adobe SWF ADPCM */
125 WAVE_FORMAT_EXTENSIBLE = 0xFFFE,
126};
127
128struct wave_fmt {
129 unsigned int formattag;
130 unsigned int channels;
131 unsigned int blockalign;
132 unsigned int bitspersample;
133 unsigned int samplesperblock;
134 uint32_t totalsamples;
135 uint64_t numbytes;
136};
137
138static unsigned char *convert_utf8(const unsigned char *src, unsigned char *dst,
139 int size, bool is_64)
140{
141 if (is_64)
142 {
143 /* Note: wave64: metadata codepage is UTF-16 only */
144 return utf16LEdecode(src, dst, size);
145 }
146 return iso_decode(src, dst, -1, size);
147}
148
149static void set_totalsamples(struct wave_fmt *fmt, struct mp3entry* id3)
150{
151 switch (fmt->formattag)
152 {
153 case WAVE_FORMAT_PCM:
154 case WAVE_FORMAT_IEEE_FLOAT:
155 case WAVE_FORMAT_ALAW:
156 case WAVE_FORMAT_MULAW:
157 case IBM_FORMAT_ALAW:
158 case IBM_FORMAT_MULAW:
159 fmt->blockalign = fmt->bitspersample * fmt->channels >> 3;
160 fmt->samplesperblock = 1;
161 break;
162 case WAVE_FORMAT_YAMAHA_ADPCM:
163 if (id3->channels != 0)
164 {
165 fmt->samplesperblock =
166 (fmt->blockalign == ((id3->frequency / 60) + 4) * fmt->channels)?
167 id3->frequency / 30 : (fmt->blockalign << 1) / fmt->channels;
168 }
169 break;
170 case WAVE_FORMAT_DIALOGIC_OKI_ADPCM:
171 fmt->blockalign = 1;
172 fmt->samplesperblock = 2;
173 break;
174 case WAVE_FORMAT_SWF_ADPCM:
175 if (fmt->bitspersample != 0 && id3->channels != 0)
176 {
177 fmt->samplesperblock
178 = (((fmt->blockalign << 3) - 2) / fmt->channels - 22)
179 / fmt->bitspersample + 1;
180 }
181 break;
182 default:
183 break;
184 }
185
186 if (fmt->blockalign != 0)
187 fmt->totalsamples = (fmt->numbytes / fmt->blockalign) * fmt->samplesperblock;
188}
189
190static void parse_riff_format(unsigned char* buf, int fmtsize, struct wave_fmt *fmt,
191 struct mp3entry* id3)
192{
193 /* wFormatTag */
194 fmt->formattag = buf[0] | (buf[1] << 8);
195 /* wChannels */
196 fmt->channels = buf[2] | (buf[3] << 8);
197 /* dwSamplesPerSec */
198 id3->frequency = get_long_le(&buf[4]);
199 /* dwAvgBytesPerSec */
200 id3->bitrate = (get_long_le(&buf[8]) * 8) / 1000;
201 /* wBlockAlign */
202 fmt->blockalign = buf[12] | (buf[13] << 8);
203 /* wBitsPerSample */
204 fmt->bitspersample = buf[14] | (buf[15] << 8);
205
206 if (fmt->formattag != WAVE_FORMAT_EXTENSIBLE)
207 {
208 if (fmtsize > 19)
209 {
210 /* wSamplesPerBlock */
211 fmt->samplesperblock = buf[18] | (buf[19] << 8);
212 }
213 }
214 else if (fmtsize > 25)
215 {
216 /* wValidBitsPerSample */
217 fmt->bitspersample = buf[18] | (buf[19] << 8);
218 /* SubFormat */
219 fmt->formattag = buf[24] | (buf[25] << 8);
220 }
221
222 /* Check for ATRAC3 stream */
223 if (fmt->formattag == WAVE_FORMAT_ATRAC3)
224 {
225 int jsflag = 0;
226 if(id3->bitrate == 66 || id3->bitrate == 94)
227 jsflag = 1;
228
229 id3->extradata_size = 14;
230 id3->channels = 2;
231 id3->codectype = AFMT_OMA_ATRAC3;
232 id3->bytesperframe = fmt->blockalign;
233
234 /* Store the extradata for the codec */
235 AV_WL16(&id3->id3v2buf[0], 1); // always 1
236 AV_WL32(&id3->id3v2buf[2], id3->frequency);// samples rate
237 AV_WL16(&id3->id3v2buf[6], jsflag); // coding mode
238 AV_WL16(&id3->id3v2buf[8], jsflag); // coding mode
239 AV_WL16(&id3->id3v2buf[10], 1); // always 1
240 AV_WL16(&id3->id3v2buf[12], 0); // always 0
241 }
242}
243
244static void parse_list_chunk(int fd, struct mp3entry* id3, int chunksize, bool is_64)
245{
246 unsigned char tmpbuf[ID3V2_BUF_SIZE];
247 unsigned char *bp = tmpbuf;
248 unsigned char *endp;
249 unsigned char *data_pos;
250 unsigned char *tag_pos = id3->id3v2buf;
251 int datasize;
252 int infosize;
253 int remain;
254 int i;
255
256 if (is_64)
257 lseek(fd, 4, SEEK_CUR);
258 else if (read(fd, bp, 4) < 4 || memcmp(bp, "INFO", 4))
259 return;
260
261 /* decrease skip bytes */
262 chunksize -= 4;
263
264 infosize = read(fd, bp, (ID3V2_BUF_SIZE > chunksize)? chunksize : ID3V2_BUF_SIZE);
265 if (infosize <= 8)
266 return;
267
268 endp = bp + infosize;
269 while (bp < endp)
270 {
271 datasize = get_long_le(bp + 4);
272 data_pos = bp + 8;
273 remain = ID3V2_BUF_SIZE - (tag_pos - (unsigned char*)id3->id3v2buf);
274 if (remain < 1)
275 break;
276
277 for (i = 0; i < INFO_CHUNK_COUNT; i++)
278 {
279 if (memcmp(bp, info_chunks[i].tag, 4) == 0)
280 {
281 *((char **)(((char*)id3) + info_chunks[i].offset)) = tag_pos;
282 tag_pos = convert_utf8(data_pos, tag_pos,
283 (datasize + 1 >= remain )? remain - 1 : datasize,
284 is_64);
285 *tag_pos++ = 0;
286 break;
287 }
288 }
289 bp = data_pos + datasize + (datasize & 1);
290 };
291}
292
293static bool read_header(int fd, struct mp3entry* id3, const unsigned char *chunknames,
294 bool is_64)
295{
296 /* Use the temporary buffer */
297 unsigned char* buf = (unsigned char *)id3->path;
298
299 struct wave_fmt fmt;
300
301 const unsigned int namelen = (is_64)? WAVE64_CHUNKNAME_LENGTH : WAVE_CHUNKNAME_LENGTH;
302 const unsigned int sizelen = (is_64)? WAVE64_CHUNKSIZE_LENGTH : WAVE_CHUNKSIZE_LENGTH;
303 const unsigned int len = namelen + sizelen;
304 uint64_t chunksize;
305 uint64_t offset = len + namelen;
306 int read_data;
307
308 memset(&fmt, 0, sizeof(struct wave_fmt));
309
310 id3->vbr = false; /* All Wave/Wave64 files are CBR */
311 id3->filesize = filesize(fd);
312
313 /* get RIFF chunk header */
314 lseek(fd, 0, SEEK_SET);
315 read(fd, buf, offset);
316
317 if ((memcmp(buf, chunknames + RIFF_CHUNK * namelen, namelen) != 0) ||
318 (memcmp(buf + len, chunknames + WAVE_CHUNK * namelen, namelen) != 0))
319 {
320 DEBUGF("metadata error: missing riff header.\n");
321 return false;
322 }
323
324 /* iterate over WAVE chunks until 'data' chunk */
325 while (read(fd, buf, len) > 0)
326 {
327 offset += len;
328
329 /* get chunk size (when the header is wave64, chunksize includes GUID and data length) */
330 chunksize = (is_64) ? get_uint64_le(buf + namelen) - len :
331 get_long_le(buf + namelen);
332
333 read_data = 0;
334 if (memcmp(buf, chunknames + FMT_CHUNK * namelen, namelen) == 0)
335 {
336 DEBUGF("find 'fmt ' chunk\n");
337
338 if (chunksize < 16)
339 {
340 DEBUGF("metadata error: 'fmt ' chunk is too small: %d\n", (int)chunksize);
341 return false;
342 }
343
344 /* get and parse format */
345 read_data = (chunksize > 25)? 26 : chunksize;
346
347 read(fd, buf, read_data);
348 parse_riff_format(buf, read_data, &fmt, id3);
349 }
350 else if (memcmp(buf, chunknames + FACT_CHUNK * namelen, namelen) == 0)
351 {
352 DEBUGF("find 'fact' chunk\n");
353
354 /* dwSampleLength */
355 if (chunksize >= sizelen)
356 {
357 /* get totalsamples */
358 read_data = sizelen;
359 read(fd, buf, read_data);
360 fmt.totalsamples = (is_64)? get_uint64_le(buf) : get_long_le(buf);
361 }
362 }
363 else if (memcmp(buf, chunknames + DATA_CHUNK * namelen, namelen) == 0)
364 {
365 DEBUGF("find 'data' chunk\n");
366 fmt.numbytes = chunksize;
367 if (fmt.formattag == WAVE_FORMAT_ATRAC3)
368 id3->first_frame_offset = offset;
369 }
370 else if (memcmp(buf, chunknames + LIST_CHUNK * namelen, namelen) == 0)
371 {
372 DEBUGF("find 'LIST' chunk\n");
373 parse_list_chunk(fd, id3, chunksize, is_64);
374 lseek(fd, offset, SEEK_SET);
375 }
376
377 /* padded to next chunk */
378 chunksize += ((is_64)? ((1 + ~chunksize) & 0x07) : (chunksize & 1));
379
380 offset += chunksize;
381 if (offset >= id3->filesize)
382 break;
383
384 lseek(fd, chunksize - read_data, SEEK_CUR);
385 }
386
387 if (fmt.numbytes == 0)
388 {
389 DEBUGF("metadata error: read error or missing 'data' chunk.\n");
390 return false;
391 }
392
393 if (fmt.totalsamples == 0)
394 set_totalsamples(&fmt, id3);
395
396 if (id3->frequency == 0 || id3->bitrate == 0)
397 {
398 DEBUGF("metadata error: frequency or bitrate is 0\n");
399 return false;
400 }
401
402 /* Calculate track length (in ms) and estimate the bitrate (in kbit/s) */
403 id3->length = (fmt.formattag != WAVE_FORMAT_ATRAC3)?
404 (uint64_t)fmt.totalsamples * 1000 / id3->frequency :
405 ((id3->filesize - id3->first_frame_offset) * 8) / id3->bitrate;
406
407 /* output header/id3 info (for debug) */
408 DEBUGF("%s header info ----\n", (is_64)? "wave64" : "wave");
409 DEBUGF(" format: %04x\n", (int)fmt.formattag);
410 DEBUGF(" channels: %u\n", fmt.channels);
411 DEBUGF(" blockalign: %u\n", fmt.blockalign);
412 DEBUGF(" bitspersample: %u\n", fmt.bitspersample);
413 DEBUGF(" samplesperblock: %u\n", fmt.samplesperblock);
414 DEBUGF(" totalsamples: %u\n", (unsigned int)fmt.totalsamples);
415 DEBUGF(" numbytes: %u\n", (unsigned int)fmt.numbytes);
416 DEBUGF("id3 info ----\n");
417 DEBUGF(" frequency: %u\n", (unsigned int)id3->frequency);
418 DEBUGF(" bitrate: %d\n", id3->bitrate);
419 DEBUGF(" length: %u\n", (unsigned int)id3->length);
420
421 return true;
422}
423
424bool get_wave_metadata(int fd, struct mp3entry* id3)
425{
426 return read_header(fd, id3, wave_chunklist, false);
427}
428
429bool get_wave64_metadata(int fd, struct mp3entry* id3)
430{
431 return read_header(fd, id3, wave64_chunklist, true);
432}
generated by cgit v1.2.3 (git 2.39.1) at 2024-09-28 09:25:30 +0000