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1 | /**************************************************************************** | |
2 | * | |
3 | * Programs for processing sound files in raw- or WAV-format. | |
4 | * -- Useful functions for parsing command line options and | |
5 | * issuing errors, warnings, and chit chat. | |
6 | * | |
7 | * Name: frame.c | |
8 | * Version: see static char *standardversion, below. | |
9 | * Author: Mark Roberts <mark@manumark.de> | |
10 | * Michael Labuschke <michael@labuschke.de> sys_errlist fixes | |
11 | * | |
12 | ****************************************************************************/ | |
13 | /**************************************************************************** | |
14 | * These are useful functions that all DSP programs might find handy | |
15 | ****************************************************************************/ | |
16 | ||
17 | #include <stdio.h> | |
18 | #include <math.h> | |
19 | #include <stdlib.h> /* for exit and malloc */ | |
20 | #include <string.h> | |
21 | #include <time.h> | |
22 | #include <stdarg.h> | |
23 | #include <errno.h> | |
24 | #include <assert.h> | |
25 | /**************************************************************************** | |
26 | * | |
27 | * Programs for processing sound files in raw- or WAV-format. | |
28 | * -- Useful functions for parsing command line options and | |
29 | * issuing errors, warnings, and chit chat. | |
30 | * | |
31 | * Name: frame.h | |
32 | * Version: see frame.c | |
33 | * Author: Mark Roberts <mark@manumark.de> | |
34 | * | |
35 | ****************************************************************************/ | |
36 | /**************************************************************************** | |
37 | * These are useful functions that all DSP programs might find handy | |
38 | ****************************************************************************/ | |
39 | ||
40 | #ifndef ASDF | |
41 | #define ASDF | |
42 | ||
43 | /* fileswitch for parseargs: | |
44 | ||
45 | The following are masks for several different ways of opening files. | |
46 | -------------------------------------------------------------------- | |
47 | Bit 0: Open infile? | |
48 | Bit 1: Open infile as binary (as opposed to text) | |
49 | Bit 2: Open outfile? | |
50 | Bit 3: Open outfile as binary (as opposed to text) | |
51 | Bit 4: Do not complain about too many file arguments | |
52 | Bit 5: Open one file for input AND output, binary. | |
53 | */ | |
54 | #define INTEXT (1+0) | |
55 | #define INBIN (1+2) | |
56 | #define OUTTEXT (4) | |
57 | #define OUTBIN (4+8) | |
58 | #define NOFILES (0) | |
59 | #define NOCOMPLAIN (16) | |
60 | #define IOBIN (32) | |
61 | ||
62 | #ifndef FALSE | |
63 | #define FALSE (0==1) | |
64 | #define TRUE (0==0) | |
65 | #endif | |
66 | ||
67 | extern int samplefrequency; | |
68 | extern unsigned short samplewidth; | |
69 | extern unsigned short channels; | |
70 | extern int wavout; /* TRUE iff out file is .WAV file */ | |
71 | extern int iswav; /* TRUE iff in file was found to be a .WAV file */ | |
72 | extern FILE *in, *out; | |
73 | extern char *infilename, *outfilename; | |
74 | extern int verboselevel; | |
75 | extern char *version; /* String to be issued as version string. Should | |
76 | be set by application. */ | |
77 | extern char *usage; /* String to be issued as usage string. Should be | |
78 | set by application. */ | |
79 | ||
80 | #define DEFAULTFREQ 44100 | |
81 | #define BUFFSIZE 50000 /* How many samples to read in one go (preferred) */ | |
82 | #define MINBUFFSIZE 5000 /* How many samples to read in one go (minimum) */ | |
83 | ||
84 | /************************************************* | |
85 | * Types of errors handled by argerrornum() * | |
86 | *************************************************/ | |
87 | typedef enum | |
88 | { | |
89 | ME_NOINT, | |
90 | ME_NODOUBLE, | |
91 | ME_NOTIME, | |
92 | ME_NOVOL, | |
93 | ME_NOSWITCH, | |
94 | ME_TOOMANYFILES, | |
95 | ME_HEADERONTEXTFILE, | |
96 | ME_NOINFILE, | |
97 | ME_NOOUTFILE, | |
98 | ME_NOIOFILE, | |
99 | ME_NOSTDIN, | |
100 | ME_NOSTDOUT, | |
101 | ME_NOSTDIO, | |
102 | ME_NOTENOUGHFILES, | |
103 | ME_THISCANTHAPPEN | |
104 | } Errornum; | |
105 | ||
106 | ||
107 | /* ----------------------------------------------------------------------- | |
108 | Create memory and copy 'string', returning a pointer to the copy. | |
109 | NULL is returned if malloc fails. | |
110 | -----------------------------------------------------------------------*/ | |
111 | extern char *malloccopy( char *string); | |
112 | ||
113 | /* ----------------------------------------------------------------------- | |
114 | Start the stopwatch and make sure the user is informed at end of program. | |
115 | -----------------------------------------------------------------------*/ | |
116 | extern void startstopwatch(void); | |
117 | ||
118 | /* ----------------------------------------------------------------------- | |
119 | Writes the number of samples to result that are yet to be read from anyin. | |
120 | I.e. the number of remaining bytes is divided by the number of bytes per | |
121 | sample value, but not by the number of channels. | |
122 | Return values are TRUE on success, FALSE on failure. | |
123 | -----------------------------------------------------------------------*/ | |
124 | extern int getremainingfilelength( FILE *anyin, long *result); | |
125 | ||
126 | /* ----------------------------------------------------------------------- | |
127 | Read a .pk-header from 'anyin' and printf the entries. | |
128 | -----------------------------------------------------------------------*/ | |
129 | void readpkheader( FILE *anyin); | |
130 | ||
131 | /* ----------------------------------------------------------------------- | |
132 | Read a .WAV header from 'anyin'. | |
133 | If it is recognised, the data is used. | |
134 | Otherwise, we assume it's PCM-data and ignore the header. | |
135 | The global variable 'iswav' is set on success, otherwise cleared. | |
136 | -----------------------------------------------------------------------*/ | |
137 | extern void readwavheader( FILE *anyin); | |
138 | ||
139 | /* ----------------------------------------------------------------------- | |
140 | Write a .WAV header to 'out'. | |
141 | The filepointer is placed at the end of 'out' before operation. | |
142 | This should be called before any data is | |
143 | written, and again, when ALL the data has been written. | |
144 | First time, this positions the file pointer correctly; second time, the | |
145 | missing data can be inserted that wasn't known the first time round. | |
146 | -----------------------------------------------------------------------*/ | |
147 | extern void makewavheader( void); | |
148 | ||
149 | /* -------------------------------------------------------------------- | |
150 | Tests the character 'coal' for being a command line option character, | |
151 | momentarrily '/' or '-'. | |
152 | -------------------------------------------------------------------- */ | |
153 | extern int isoptionchar (char coal); | |
154 | ||
155 | /* ----------------------------------------------------------------------- | |
156 | Reads through the arguments on the lookout for an option starting | |
157 | with 'string'. The rest of the option is read as a time and passed | |
158 | to *result, where the result is meant to mean 'number of samples' in | |
159 | that time. | |
160 | On failure, *result is unchanged. | |
161 | return value is TRUE on success, FALSE otherwise. | |
162 | -----------------------------------------------------------------------*/ | |
163 | extern int parsetimearg( int argcount, char *args[], char *string, | |
164 | int *result); | |
165 | ||
166 | /* ----------------------------------------------------------------------- | |
167 | The string argument is read as a time and passed to *result, where | |
168 | the result is meant to mean 'number of samples' in that time. On | |
169 | failure, *result is unchanged. | |
170 | return value is TRUE on success, FALSE otherwise. | |
171 | -----------------------------------------------------------------------*/ | |
172 | int parsetime(char *string, int *result); | |
173 | ||
174 | /* ----------------------------------------------------------------------- | |
175 | The string argument is read as a frequency and passed | |
176 | to *result, where the result is meant to mean 'number of samples' in | |
177 | one cycle of that frequency. | |
178 | On failure, *result is unchanged. | |
179 | return value is TRUE on success, FALSE otherwise. | |
180 | -----------------------------------------------------------------------*/ | |
181 | int parsefreq(char *string, double *result); | |
182 | ||
183 | /* -------------------------------------------------------------------- | |
184 | Reads through the arguments on the lookout for a switch -'string'. | |
185 | return value is TRUE if one exists, FALSE otherwise. | |
186 | If characters remain after the switch, a fatal error is issued. | |
187 | -------------------------------------------------------------------- */ | |
188 | extern int parseswitcharg( int argcount, char *args[], char *string); | |
189 | ||
190 | /* -------------------------------------------------------------------- | |
191 | Reads through the arguments on the lookout for an option starting | |
192 | with 'string'. The rest of the option is read as an integer and | |
193 | passed to &result. | |
194 | On failure, &result is unchanged. | |
195 | return value is TRUE on success, FALSE otherwise. | |
196 | -------------------------------------------------------------------- */ | |
197 | extern int parseintarg( int argcount, char *args[], char *string, | |
198 | int *result); | |
199 | ||
200 | /* -------------------------------------------------------------------- | |
201 | Reads through the arguments on the lookout for a filename, i.e. anything | |
202 | that does not start with the optionchar. The filename is copied to | |
203 | newly allocated memory, a pointer to which is returned. | |
204 | The argument is marked as used. Therefore repeated use of this function | |
205 | will yield a complete list of filenames on the commandline. | |
206 | If malloc() fails, the function does not return. | |
207 | -------------------------------------------------------------------- */ | |
208 | extern char *parsefilearg( int argcount, char *args[]); | |
209 | ||
210 | /* -------------------------------------------------------------------- | |
211 | Reads through the arguments on the lookout for an option starting | |
212 | with 'string'. The rest of the option is read as a double and | |
213 | passed to *result. | |
214 | On failure, *result is unchanged. | |
215 | return value is TRUE on success, FALSE otherwise. | |
216 | -------------------------------------------------------------------- */ | |
217 | extern int parsedoublearg( int argcount, char *args[], char *string, | |
218 | double *result); | |
219 | ||
220 | /* -------------------------------------------------------------------- | |
221 | Reads through the arguments on the lookout for an option starting | |
222 | with 'string'. The rest of the option is read as a volume, i.e. | |
223 | absolute, percent or db. The result is passed to *result. | |
224 | On failure, *result is unchanged. | |
225 | -------------------------------------------------------------------- */ | |
226 | extern int parsevolarg( int argcount, char *args[], char *string, | |
227 | double *result); | |
228 | ||
229 | /* -------------------------------------------------------------------- | |
230 | Reads the specified string and interprets it as a volume. The string | |
231 | would be of the form 1.8 or 180% or 5db. | |
232 | On success, the return value is the relative volume, i.e. 1.8 | |
233 | On failure, -1 is returned. | |
234 | -------------------------------------------------------------------- */ | |
235 | extern int parsevolume(char *s, double *result); | |
236 | ||
237 | /* -------------------------------------------------------------------- | |
238 | Reads through the arguments on the lookout for a switch -'string'. | |
239 | return value is TRUE if one exists, FALSE otherwise. | |
240 | If characters remain after the switch, a fatal error is issued. | |
241 | -------------------------------------------------------------------- */ | |
242 | extern int parseswitch( char *found, char *wanted); | |
243 | ||
244 | /* -------------------------------------------------------------------- | |
245 | Reports an error due to parsing the string 's' encountered on the | |
246 | command line. | |
247 | -------------------------------------------------------------------- */ | |
248 | extern void argerror(char *s); | |
249 | ||
250 | /* -------------------------------------------------------------------- | |
251 | Reports an error due to parsing the string 's' encountered on the | |
252 | command line. 'code' indicates the type of error. | |
253 | -------------------------------------------------------------------- */ | |
254 | extern void argerrornum(char *s, Errornum code); | |
255 | ||
256 | /* -------------------------------------------------------------------- | |
257 | Reports an error due to parsing the string 's' encountered on the | |
258 | command line. 'message' explains the type of error. | |
259 | -------------------------------------------------------------------- */ | |
260 | extern void argerrortxt(char *s, char *message); | |
261 | ||
262 | /* -------------------------------------------------------------------- | |
263 | Check for any remaining arguments and complain about their existence. | |
264 | If arguments are found, this function does not return. | |
265 | -------------------------------------------------------------------- */ | |
266 | extern void checknoargs( int argcount, char *args[]); | |
267 | ||
268 | /* -------------------------------------------------------------------- | |
269 | Parses the command line arguments as represented by the function | |
270 | arguments. Sets the global variables 'in', 'out', 'samplefrequency' | |
271 | and 'samplewidth' accordingly. | |
272 | According to 'fileswitch', in and out files are opened or not. See | |
273 | above for an explanation of 'fileswitch'. | |
274 | -------------------------------------------------------------------- */ | |
275 | extern void parseargs( int argcount, char *args[], int fileswitch); | |
276 | ||
277 | /* -------------------------------------------------------------------- | |
278 | Returns the index 'i' of the first argument that IS an option, and | |
279 | which begins with the label 's'. If there is none, -1. | |
280 | We also mark that option as done with, i.e. we cross it out. | |
281 | -------------------------------------------------------------------- */ | |
282 | extern int findoption( int argcount, char *args[], char *s); | |
283 | ||
284 | /* -------------------------------------------------------------------- | |
285 | Finishes off the .WAV header (if any) and exits correctly and formerly. | |
286 | -------------------------------------------------------------------- */ | |
287 | extern int myexit (int value); | |
288 | ||
289 | /* -------------------------------------------------------------------- | |
290 | Reads the stated input file bufferwise, calls the function 'work' | |
291 | with the proper values, and writes the result to the stated output file. | |
292 | Return value: TRUE on success, FALSE otherwise. | |
293 | -------------------------------------------------------------------- */ | |
294 | extern int workloop( FILE *theinfile, FILE *theoutfile, | |
295 | int (*work)( short *buffer, int length) ); | |
296 | ||
297 | /* -------------------------------------------------------------------- | |
298 | Five functions for printing to stderr. Depending on the level of verbose, | |
299 | output may be supressed. fatalerror() is like error() but does not return. | |
300 | fatalperror() is like the standard function perror() but does not return. | |
301 | -------------------------------------------------------------------- */ | |
302 | extern int chat( const char *format, ...); | |
303 | extern int inform( const char *format, ...); | |
304 | extern int error( const char *format, ...); | |
305 | extern void fatalerror( const char *format, ...); | |
306 | extern void fatalperror( const char *string); | |
307 | ||
308 | /* -------------------------------------------------------------------- | |
309 | And one functions for printing to stdout. | |
310 | -------------------------------------------------------------------- */ | |
311 | extern int say( const char *format, ...); | |
312 | ||
313 | /* -------------------------------------------------------------------- | |
314 | Allocate memory for it and return a pointer to a string made up of | |
315 | the two argument strings. | |
316 | -------------------------------------------------------------------- */ | |
317 | extern char *mallocconcat( char *one, char *two); | |
318 | ||
319 | /* -------------------------------------------------------------------- | |
320 | Convert a sample value to decibel. | |
321 | -------------------------------------------------------------------- */ | |
322 | extern double double2db( double value); | |
323 | ||
324 | /* -------------------------------------------------------------------- | |
325 | Read 'size' samples from file 'in' and lose them. | |
326 | -------------------------------------------------------------------- */ | |
327 | extern void readawaysamples( FILE *in, size_t size); | |
328 | ||
329 | #endif | |
330 | ||
331 | time_t stopwatch; /* will hold time at start of calculation */ | |
332 | int samplefrequency; | |
333 | unsigned short samplewidth; | |
334 | unsigned short channels; | |
335 | int wavout; /* TRUE iff out file should be a .WAV file */ | |
336 | int iswav; /* TRUE iff in file was found to be a .WAV file */ | |
337 | FILE *in, *out; | |
338 | char *infilename, *outfilename; | |
339 | int verboselevel; | |
340 | char *version = ""; | |
341 | char *usage = ""; | |
342 | static int test_usage; | |
343 | ||
344 | static char *standardversion = "frame version 1.3, June 13th 2001"; | |
345 | static char *standardusage = | |
346 | "\nOptions common to all mark-dsp programs:\n" | |
347 | ||
348 | "-h \t\t create a WAV-header on output files.\n" | |
349 | "-c#\t\t set number of channels to # (1 or 2). Default: like input.\n" | |
350 | "-w#\t\t set number of bits per sample (width) to # (only 16)\n" | |
351 | "-f#\t\t set sample frequency to #. Default: like input.\n" | |
352 | "-V \t\t verbose: talk a lot.\n" | |
353 | "-Q \t\t quiet: talk as little as possible.\n\n" | |
354 | "In most cases, a filename of '-' means stdin or stdout.\n\n" | |
355 | "Bug-reports: mark@manumark.de\n" | |
356 | ; | |
357 | ||
358 | /* ----------------------------------------------------------------------- | |
359 | Writes the number of samples to result that are yet to be read from anyin. | |
360 | Return values are TRUE on success, FALSE on failure. | |
361 | -----------------------------------------------------------------------*/ | |
362 | int getremainingfilelength( FILE *anyin, long *result) | |
363 | { | |
364 | long i; | |
365 | ||
366 | i = ftell (anyin); | |
367 | if (i == -1) return FALSE; | |
368 | if (fseek (anyin, 0, SEEK_END) == -1) return FALSE; | |
369 | *result = ftell (anyin); | |
370 | if (*result == -1) return FALSE; | |
371 | (*result) -= i; | |
372 | (*result) /= samplewidth; | |
373 | if (fseek (anyin, i, SEEK_SET) == -1) return FALSE; | |
374 | return TRUE; | |
375 | } | |
376 | ||
377 | /* ----------------------------------------------------------------------- | |
378 | Read a .pk-header from 'anyin'. | |
379 | -----------------------------------------------------------------------*/ | |
380 | void readpkheader( FILE *anyin) | |
381 | { | |
382 | unsigned short tempushort; | |
383 | int tempint, i, x; | |
384 | unsigned char blood[8]; | |
385 | ||
386 | for (i = 0; i < 11; i++) | |
387 | { | |
388 | fread( &tempint, 4, 1, anyin); | |
389 | printf( "%d: %d, ", i, tempint); | |
390 | } | |
391 | printf( "\n"); | |
392 | fread( blood, 1, 8, anyin); | |
393 | for (i = 0; i < 8; i++) | |
394 | printf( "%d ", blood[i]); | |
395 | printf( "\n"); | |
396 | for (i = 0; i < 8; i++) | |
397 | { | |
398 | for (x = 128; x > 0; x /= 2) | |
399 | printf((blood[i] & x) == 0? "0 ":"1 "); | |
400 | printf(i%4==3? "\n":"| "); | |
401 | } | |
402 | printf( "\n"); | |
403 | for (i = 0; i < 2; i++) | |
404 | { | |
405 | fread( &tempint, 4, 1, anyin); | |
406 | printf( "%d: %d, ", i, tempint); | |
407 | } | |
408 | printf( "\n"); | |
409 | for (i = 0; i < 2; i++) | |
410 | { | |
411 | fread( &tempushort, 2, 1, anyin); | |
412 | printf( "%d: %d, ", i, tempushort); | |
413 | } | |
414 | printf( "\n"); | |
415 | } | |
416 | ||
417 | ||
418 | ||
419 | /* ----------------------------------------------------------------------- | |
420 | Read a .WAV header from 'anyin'. See header for details. | |
421 | -----------------------------------------------------------------------*/ | |
422 | void readwavheader( FILE *anyin) | |
423 | { | |
424 | unsigned int tempuint, sf; | |
425 | unsigned short tempushort, cn; | |
426 | char str[9]; | |
427 | int nowav = FALSE; | |
428 | ||
429 | iswav = FALSE; | |
430 | ||
431 | if (ftell(anyin) == -1) /* If we cannot seek this file */ | |
432 | { | |
433 | nowav = TRUE; /* -> Pretend this is no wav-file */ | |
434 | chat("File not seekable: not checking for WAV-header.\n"); | |
435 | } | |
436 | else | |
437 | { | |
438 | /* Expect four bytes "RIFF" and four bytes filelength */ | |
439 | fread (str, 1, 8, anyin); /* 0 */ | |
440 | str[4] = '\0'; | |
441 | if (strcmp(str, "RIFF") != 0) nowav = TRUE; | |
442 | /* Expect eight bytes "WAVEfmt " */ | |
443 | fread (str, 1, 8, anyin); /* 8 */ | |
444 | str[8] = '\0'; | |
445 | if (strcmp(str, "WAVEfmt ") != 0) nowav = TRUE; | |
446 | /* Expect length of fmt data, which should be 16 */ | |
447 | fread (&tempuint, 4, 1, anyin); /* 16 */ | |
448 | if (tempuint != 16) nowav = TRUE; | |
449 | /* Expect format tag, which should be 1 for pcm */ | |
450 | fread (&tempushort, 2, 1, anyin); /* 20 */ | |
451 | if (tempushort != 1) | |
452 | nowav = TRUE; | |
453 | /* Expect number of channels */ | |
454 | fread (&cn, 2, 1, anyin); /* 20 */ | |
455 | if (cn != 1 && cn != 2) nowav = TRUE; | |
456 | /* Read samplefrequency */ | |
457 | fread (&sf, 4, 1, anyin); /* 24 */ | |
458 | /* Read bytes per second: Should be samplefreq * channels * 2 */ | |
459 | fread (&tempuint, 4, 1, anyin); /* 28 */ | |
460 | if (tempuint != sf * cn * 2) nowav = TRUE; | |
461 | /* read bytes per frame: Should be channels * 2 */ | |
462 | fread (&tempushort, 2, 1, anyin); /* 32 */ | |
463 | if (tempushort != cn * 2) nowav = TRUE; | |
464 | /* Read bits per sample: Should be 16 */ | |
465 | fread (&tempushort, 2, 1, anyin); /* 34 */ | |
466 | if (tempushort != 16) nowav = TRUE; | |
467 | fread (str, 4, 1, anyin); /* 36 */ | |
468 | str[4] = '\0'; | |
469 | if (strcmp(str, "data") != 0) nowav = TRUE; | |
470 | fread (&tempuint, 4, 1, anyin); /* 40 */ | |
471 | if (nowav) | |
472 | { | |
473 | fseek (anyin, 0, SEEK_SET); /* Back to beginning of file */ | |
474 | chat("File has no WAV header.\n"); | |
475 | } | |
476 | else | |
477 | { | |
478 | samplefrequency = sf; | |
479 | channels = cn; | |
480 | chat ("Read WAV header: %d channels, samplefrequency %d.\n", | |
481 | channels, samplefrequency); | |
482 | iswav = TRUE; | |
483 | } | |
484 | } | |
485 | return; | |
486 | } | |
487 | ||
488 | ||
489 | ||
490 | /* ----------------------------------------------------------------------- | |
491 | Write a .WAV header to 'out'. See header for details. | |
492 | -----------------------------------------------------------------------*/ | |
493 | void makewavheader( void) | |
494 | { | |
495 | unsigned int tempuint, filelength; | |
496 | unsigned short tempushort; | |
497 | ||
498 | /* If fseek fails, don't create the header. */ | |
499 | if (fseek (out, 0, SEEK_END) != -1) | |
500 | { | |
501 | filelength = ftell (out); | |
502 | chat ("filelength %d, ", filelength); | |
503 | fseek (out, 0, SEEK_SET); | |
504 | fwrite ("RIFF", 1, 4, out); /* 0 */ | |
505 | tempuint = filelength - 8; fwrite (&tempuint, 4, 1, out); /* 4 */ | |
506 | fwrite ("WAVEfmt ", 1, 8, out); /* 8 */ | |
507 | /* length of fmt data 16 bytes */ | |
508 | tempuint = 16; | |
509 | fwrite (&tempuint, 4, 1, out); /* 16 */ | |
510 | /* Format tag: 1 for pcm */ | |
511 | tempushort = 1; | |
512 | fwrite (&tempushort, 2, 1, out); /* 20 */ | |
513 | chat ("%d channels\n", channels); | |
514 | fwrite (&channels, 2, 1, out); | |
515 | chat ("samplefrequency %d\n", samplefrequency); | |
516 | fwrite (&samplefrequency, 4, 1, out); /* 24 */ | |
517 | /* Bytes per second */ | |
518 | tempuint = channels * samplefrequency * 2; | |
519 | fwrite (&tempuint, 4, 1, out); /* 28 */ | |
520 | /* Block align */ | |
521 | tempushort = 2 * channels; | |
522 | fwrite (&tempushort, 2, 1, out); /* 32 */ | |
523 | /* Bits per sample */ | |
524 | tempushort = 16; | |
525 | fwrite (&tempushort, 2, 1, out); /* 34 */ | |
526 | fwrite ("data", 4, 1, out); /* 36 */ | |
527 | tempuint = filelength - 44; fwrite (&tempuint, 4, 1, out); /* 40 */ | |
528 | } | |
529 | return; | |
530 | } | |
531 | ||
532 | /* ----------------------------------------------------------------------- | |
533 | After all is read and done, inform the inclined user of the elapsed time | |
534 | -----------------------------------------------------------------------*/ | |
535 | static void statistics( void) | |
536 | { | |
537 | int temp; | |
538 | ||
539 | temp = time(NULL) - stopwatch; | |
540 | if (temp != 1) | |
541 | { | |
542 | inform ("\nTime: %d seconds\n", temp); | |
543 | } | |
544 | else | |
545 | { | |
546 | inform ("\nTime: 1 second\n"); | |
547 | } | |
548 | return; | |
549 | } | |
550 | ||
551 | ||
552 | /* ----------------------------------------------------------------------- | |
553 | Start the stopwatch and make sure the user is informed at end of program. | |
554 | -----------------------------------------------------------------------*/ | |
555 | void startstopwatch(void) | |
556 | { | |
557 | stopwatch = time(NULL); /* Remember time 'now' */ | |
558 | atexit(statistics); /* Call function statistics() at exit. */ | |
559 | ||
560 | return; | |
561 | } | |
562 | ||
563 | /* -------------------------------------------------------------------- | |
564 | Tests the character 'coal' for being a command line option character, | |
565 | momentarrily '-'. | |
566 | -------------------------------------------------------------------- */ | |
567 | int isoptionchar (char coal) | |
568 | { | |
569 | return (coal =='-'); | |
570 | } | |
571 | ||
572 | /* ----------------------------------------------------------------------- | |
573 | Reads through the arguments on the lookout for an option starting | |
574 | with 'string'. The rest of the option is read as a time and passed | |
575 | to *result, where the result is meant to mean 'number of samples' in | |
576 | that time. | |
577 | On failure, *result is unchanged. | |
578 | return value is TRUE on success, FALSE otherwise. | |
579 | -----------------------------------------------------------------------*/ | |
580 | int parsetimearg( int argcount, char *args[], char *string, int *result) | |
581 | { | |
582 | int i; | |
583 | ||
584 | if ((i = findoption( argcount, args, string)) > 0) | |
585 | { | |
586 | if (parsetime(args[i] + 1 + strlen( string), result)) | |
587 | return TRUE; | |
588 | argerrornum(args[i]+1, ME_NOTIME); | |
589 | } | |
590 | return FALSE; | |
591 | } | |
592 | ||
593 | /* ----------------------------------------------------------------------- | |
594 | The string argument is read as a time and passed | |
595 | to *result, where the result is meant to mean 'number of samples' in | |
596 | that time. | |
597 | On failure, *result is unchanged. | |
598 | return value is TRUE on success, FALSE otherwise. | |
599 | -----------------------------------------------------------------------*/ | |
600 | int parsetime(char *string, int *result) | |
601 | { | |
602 | int k; | |
603 | double temp; | |
604 | char m, s, end; | |
605 | ||
606 | k = sscanf(string, "%lf%c%c%c", &temp, &m, &s, &end); | |
607 | switch (k) | |
608 | { | |
609 | case 0: case EOF: case 4: | |
610 | return FALSE; | |
611 | case 1: | |
612 | *result = temp; | |
613 | break; | |
614 | case 2: | |
615 | if (m == 's') | |
616 | *result = temp * samplefrequency; | |
617 | else | |
618 | return FALSE; | |
619 | break; | |
620 | case 3: | |
621 | if (m == 'm' && s == 's') | |
622 | *result = temp * samplefrequency / 1000; | |
623 | else if (m == 'H' && s == 'z') | |
624 | *result = samplefrequency / temp; | |
625 | else | |
626 | return FALSE; | |
627 | break; | |
628 | default: | |
629 | argerrornum(NULL, ME_THISCANTHAPPEN); | |
630 | } | |
631 | return TRUE; | |
632 | } | |
633 | ||
634 | /* ----------------------------------------------------------------------- | |
635 | The string argument is read as a frequency and passed | |
636 | to *result, where the result is meant to mean 'number of samples' in | |
637 | one cycle of that frequency. | |
638 | On failure, *result is unchanged. | |
639 | return value is TRUE on success, FALSE otherwise. | |
640 | -----------------------------------------------------------------------*/ | |
641 | int parsefreq(char *string, double *result) | |
642 | { | |
643 | int k; | |
644 | double temp; | |
645 | char m, s, end; | |
646 | ||
647 | k = sscanf(string, "%lf%c%c%c", &temp, &m, &s, &end); | |
648 | switch (k) | |
649 | { | |
650 | case 0: case EOF: case 2: case 4: | |
651 | return FALSE; | |
652 | case 1: | |
653 | *result = temp; | |
654 | break; | |
655 | case 3: | |
656 | if (m == 'H' && s == 'z') | |
657 | *result = samplefrequency / temp; | |
658 | else | |
659 | return FALSE; | |
660 | break; | |
661 | default: | |
662 | argerrornum(NULL, ME_THISCANTHAPPEN); | |
663 | } | |
664 | return TRUE; | |
665 | } | |
666 | ||
667 | char *parsefilearg( int argcount, char *args[]) | |
668 | { | |
669 | int i; | |
670 | char *result = NULL; | |
671 | ||
672 | for (i = 1; i < argcount; i++) | |
673 | { | |
674 | if (args[i][0] != '\0' && | |
675 | (!isoptionchar (args[i][0]) || args[i][1] == '\0' )) | |
676 | { | |
677 | /*---------------------------------------------* | |
678 | * The argument is a filename: * | |
679 | * it is either no dash followed by something, * | |
680 | * or it is a dash following by nothing. * | |
681 | *---------------------------------------------*/ | |
682 | result = malloc( strlen( args[i]) + 1); | |
683 | if (result == NULL) | |
684 | fatalperror( "Couldn't allocate memory for filename\n"); | |
685 | strcpy( result, args[i]); | |
686 | args[i][0] = '\0'; /* Mark as used up */ | |
687 | break; | |
688 | } | |
689 | } | |
690 | return result; | |
691 | } | |
692 | ||
693 | int parseswitch( char *found, char *wanted) | |
694 | { | |
695 | if (strncmp( found, wanted, strlen( wanted)) == 0) | |
696 | { | |
697 | if (found[strlen( wanted)] == '\0') | |
698 | return TRUE; | |
699 | else | |
700 | argerrornum( found, ME_NOSWITCH); | |
701 | } | |
702 | return FALSE; | |
703 | } | |
704 | ||
705 | int parseswitcharg( int argcount, char *args[], char *string) | |
706 | { | |
707 | int i; | |
708 | ||
709 | if ((i = findoption( argcount, args, string)) > 0) | |
710 | { | |
711 | if (args[i][strlen( string) + 1] == '\0') | |
712 | return TRUE; | |
713 | else | |
714 | argerrornum( args[i] + 1, ME_NOSWITCH); | |
715 | } | |
716 | return FALSE; | |
717 | } | |
718 | ||
719 | int parseintarg( int argcount, char *args[], char *string, int *result) | |
720 | { | |
721 | int i, temp; | |
722 | char c; | |
723 | ||
724 | if ((i = findoption( argcount, args, string)) > 0) | |
725 | { | |
726 | switch (sscanf(args[i] + 1 + strlen( string), | |
727 | "%d%c", &temp, &c)) | |
728 | { | |
729 | case 0: case EOF: case 2: | |
730 | argerrornum(args[i]+1, ME_NOINT); | |
731 | return FALSE; | |
732 | case 1: | |
733 | *result = temp; | |
734 | break; | |
735 | default: | |
736 | say("frame.c: This can't happen\n"); | |
737 | } | |
738 | return TRUE; | |
739 | } | |
740 | else | |
741 | { | |
742 | return FALSE; | |
743 | } | |
744 | } | |
745 | ||
746 | /* -------------------------------------------------------------------- | |
747 | Reads through the arguments on the lookout for an option starting | |
748 | with 'string'. The rest of the option is read as a double and | |
749 | passed to *result. | |
750 | On failure, *result is unchanged. | |
751 | return value is TRUE on success, FALSE otherwise. | |
752 | -------------------------------------------------------------------- */ | |
753 | int parsedoublearg( int argcount, char *args[], char *string, double *result) | |
754 | { | |
755 | int i; | |
756 | double temp; | |
757 | char end; | |
758 | ||
759 | if ((i = findoption( argcount, args, string)) > 0) | |
760 | { | |
761 | switch (sscanf(args[i] + 1 + strlen( string), "%lf%c", &temp, &end)) | |
762 | { | |
763 | case 0: case EOF: case 2: | |
764 | argerrornum(args[i]+1, ME_NODOUBLE); | |
765 | return FALSE; | |
766 | case 1: | |
767 | *result = temp; | |
768 | break; | |
769 | default: | |
770 | say("frame.c: This can't happen\n"); | |
771 | } | |
772 | return TRUE; | |
773 | } | |
774 | else | |
775 | { | |
776 | return FALSE; | |
777 | } | |
778 | } | |
779 | ||
780 | /* -------------------------------------------------------------------- | |
781 | Reads through the arguments on the lookout for an option starting | |
782 | with 'string'. The rest of the option is read as a volume, i.e. | |
783 | absolute, percent or db. The result is passed to *result. | |
784 | On failure, *result is unchanged. | |
785 | return value is TRUE on success, FALSE otherwise. | |
786 | -------------------------------------------------------------------- */ | |
787 | int parsevolarg( int argcount, char *args[], char *string, double *result) | |
788 | { | |
789 | double vol = 1.0; | |
790 | char sbd, sbb, end; | |
791 | int i, weird = FALSE; | |
792 | ||
793 | if ((i = findoption( argcount, args, string)) > 0) | |
794 | { | |
795 | switch (sscanf(args[i] + 1 + strlen( string), | |
796 | "%lf%c%c%c", &vol, &sbd, &sbb, &end)) | |
797 | { | |
798 | case 0: case EOF: case 4: | |
799 | weird = TRUE; | |
800 | break; /* No number: error */ | |
801 | case 1: | |
802 | *result = vol; | |
803 | break; | |
804 | case 2: | |
805 | if (sbd == '%') | |
806 | *result = vol / 100; | |
807 | else | |
808 | weird = TRUE; /* One char but no percent: error */ | |
809 | break; | |
810 | case 3: | |
811 | if (sbd =='d' && sbb == 'b') | |
812 | *result = pow(2, vol / 6.02); | |
813 | else | |
814 | weird = TRUE; /* Two chars but not db: error */ | |
815 | break; | |
816 | default: | |
817 | say("frame.c: This can't happen.\n"); | |
818 | } | |
819 | if (weird) | |
820 | argerrornum( args[i] + 1, ME_NOVOL); | |
821 | /* ("Weird option: couldn't parse volume '%s'\n", args[i]+2); */ | |
822 | return !weird; | |
823 | } | |
824 | else | |
825 | { | |
826 | return FALSE; | |
827 | } | |
828 | } | |
829 | ||
830 | ||
831 | /* -------------------------------------------------------------------- | |
832 | Reads the specified string 's' and interprets it as a volume. The string | |
833 | would be of the form 1.8 or 180% or 5db. | |
834 | On success, the return value TRUE and *result is given result | |
835 | (i.e. the relative volume, i.e. 1.8). On failure, FALSE is returned and | |
836 | result is given value 1.0. | |
837 | -------------------------------------------------------------------- */ | |
838 | int parsevolume(char *s, double *result) | |
839 | { | |
840 | int k; | |
841 | char sbd, sbb, end; | |
842 | ||
843 | *result = 1.0; | |
844 | k = sscanf(s, "%lf%c%c%c", result, &sbd, &sbb, &end); | |
845 | switch (k) | |
846 | { | |
847 | case 0: | |
848 | case EOF: | |
849 | case 4: | |
850 | return FALSE; | |
851 | case 1: | |
852 | break; | |
853 | case 2: | |
854 | if (sbd != '%') | |
855 | return FALSE; | |
856 | (*result) /=100; | |
857 | break; | |
858 | case 3: | |
859 | if (sbd !='d' || sbb != 'b') | |
860 | return FALSE; | |
861 | (*result) = pow(2, (*result) / 6.02); | |
862 | break; | |
863 | default: | |
864 | say("parsevolume: This can't happen (%d).\n", k); | |
865 | } | |
866 | return TRUE; | |
867 | } | |
868 | ||
869 | /* -------------------------------------------------------------------- | |
870 | Reports an error due to parsing the string 's' encountered on the | |
871 | command line. | |
872 | -------------------------------------------------------------------- */ | |
873 | void argerror(char *s) | |
874 | { | |
875 | error ("Error parsing command line. Unrecognized option:\n\t-%s\n", s); | |
876 | fatalerror("\nTry --help for help.\n"); | |
877 | } | |
878 | ||
879 | /* -------------------------------------------------------------------- | |
880 | Reports an error due to parsing the string 's' encountered on the | |
881 | command line. 'code' indicates the type of error. | |
882 | -------------------------------------------------------------------- */ | |
883 | void argerrornum(char *s, Errornum code) | |
884 | { | |
885 | char *message; | |
886 | ||
887 | if (code == ME_TOOMANYFILES) | |
888 | { | |
889 | error("Too many files on command line: '%s'.\n", s); | |
890 | } | |
891 | else | |
892 | { | |
893 | if (s != NULL) | |
894 | error ("Error parsing option -%s:\n\t", s); | |
895 | switch( code) | |
896 | { | |
897 | case ME_NOINT: | |
898 | message = "Integer expected"; | |
899 | break; | |
900 | case ME_NODOUBLE: | |
901 | message = "Floating point number expected"; | |
902 | break; | |
903 | case ME_NOTIME: | |
904 | message = "Time argument expected"; | |
905 | break; | |
906 | case ME_NOVOL: | |
907 | message = "Volume argument expected"; | |
908 | break; | |
909 | case ME_NOSWITCH: | |
910 | message = "Garbage after switch-type option"; | |
911 | break; | |
912 | case ME_HEADERONTEXTFILE: | |
913 | message = "Option -h is not useful for text-output"; | |
914 | break; | |
915 | case ME_NOINFILE: | |
916 | message = "No input file specified"; | |
917 | break; | |
918 | case ME_NOOUTFILE: | |
919 | message = "No output file specified"; | |
920 | break; | |
921 | case ME_NOIOFILE: | |
922 | message = "No input/output file specified"; | |
923 | break; | |
924 | case ME_NOSTDIN: | |
925 | message = "Standard in not supported here"; | |
926 | break; | |
927 | case ME_NOSTDOUT: | |
928 | message = "Standard out not supported here"; | |
929 | break; | |
930 | case ME_NOSTDIO: | |
931 | message = "Standard in/out not supported here"; | |
932 | break; | |
933 | case ME_NOTENOUGHFILES: | |
934 | message = "Not enough files specified"; | |
935 | break; | |
936 | case ME_THISCANTHAPPEN: | |
937 | fatalerror("\nThis can't happen. Report this as a bug\n"); | |
938 | /* fatalerror does not return */ | |
939 | default: | |
940 | error("Error code %d not implemented. Fix me!\n", code); | |
941 | message = "Error message not implemented. Fix me!"; | |
942 | } | |
943 | error("%s\n", message); | |
944 | } | |
945 | fatalerror("\nTry --help for help.\n"); | |
946 | } | |
947 | ||
948 | /* -------------------------------------------------------------------- | |
949 | Reports an error due to parsing the string 's' encountered on the | |
950 | command line. 'message' explains the type of error. | |
951 | -------------------------------------------------------------------- */ | |
952 | void argerrortxt(char *s, char *message) | |
953 | { | |
954 | if (s != NULL) | |
955 | error ("Error parsing option -%s:\n\t", s); | |
956 | else | |
957 | error ("Error parsing command line:\n\t"); | |
958 | error ("%s\n", message); | |
959 | fatalerror("\nTry --help for help.\n"); | |
960 | } | |
961 | ||
962 | /* -------------------------------------------------------------------- | |
963 | Check for any remaining arguments and complain about their existence | |
964 | -------------------------------------------------------------------- */ | |
965 | void checknoargs( int argcount, char *args[]) | |
966 | { | |
967 | int i, errorcount = 0; | |
968 | ||
969 | for (i = 1; i < argcount; i++) | |
970 | { | |
971 | if (args[i][0] != '\0') /* An unused argument! */ | |
972 | { | |
973 | errorcount++; | |
974 | if (errorcount == 1) | |
975 | error("The following arguments were not recognized:\n"); | |
976 | error("\t%s\n", args[i]); | |
977 | } | |
978 | } | |
979 | if (errorcount > 0) /* Errors are fatal */ | |
980 | fatalerror("\nTry --help for help.\n"); | |
981 | ||
982 | return; /* No errors? Return. */ | |
983 | } | |
984 | ||
985 | /* -------------------------------------------------------------------- | |
986 | Parses the command line arguments as represented by the function | |
987 | arguments. Sets the global variables 'in', 'out', 'samplefrequency' | |
988 | and 'samplewidth' accordingly. Also verboselevel. | |
989 | The files 'in' and 'out' are even opened according to 'fileswitch'. | |
990 | See headerfile for details | |
991 | -------------------------------------------------------------------- */ | |
992 | void parseargs( int argcount, char *args[], int fileswitch) | |
993 | { | |
994 | char *filename; | |
995 | int tempint; | |
996 | ||
997 | if ((fileswitch & 1) != 0) /* If getting infile */ | |
998 | in = NULL; | |
999 | if ((fileswitch & 4) != 0) /* If getting outfile */ | |
1000 | out = NULL; | |
1001 | wavout = FALSE; | |
1002 | verboselevel = 5; | |
1003 | samplefrequency = DEFAULTFREQ; | |
1004 | samplewidth = 2; | |
1005 | channels = 1; | |
1006 | ||
1007 | /*-----------------------------------------------* | |
1008 | * First first check testcase, usage and version * | |
1009 | *-----------------------------------------------*/ | |
1010 | test_usage = parseswitcharg( argcount, args, "-test-usage"); | |
1011 | if (parseswitcharg( argcount, args, "-help")) | |
1012 | { | |
1013 | printf("%s%s", usage, standardusage); | |
1014 | exit(0); | |
1015 | } | |
1016 | if (parseswitcharg( argcount, args, "-version")) | |
1017 | { | |
1018 | printf("%s\n(%s)\n", version, standardversion); | |
1019 | exit(0); | |
1020 | } | |
1021 | /*--------------------------------------* | |
1022 | * Set verboselevel * | |
1023 | *--------------------------------------*/ | |
1024 | while (parseswitcharg( argcount, args, "V")) | |
1025 | verboselevel = 10; | |
1026 | while (parseswitcharg( argcount, args, "Q")) | |
1027 | verboselevel = 1; | |
1028 | /*-------------------------------------------------* | |
1029 | * Get filenames and open files * | |
1030 | *-------------------------------------------------*/ | |
1031 | if ((fileswitch & 1) != 0) /* Infile wanted */ | |
1032 | { | |
1033 | infilename = parsefilearg( argcount, args); | |
1034 | if (infilename == NULL) | |
1035 | argerrornum( NULL, ME_NOINFILE); | |
1036 | if (strcmp( infilename, "-") == 0) | |
1037 | { | |
1038 | infilename = "<stdin>"; | |
1039 | in = stdin; | |
1040 | if ((fileswitch & 2) != 0) /* Binfile wanted */ | |
1041 | readwavheader( in); | |
1042 | } | |
1043 | else | |
1044 | { | |
1045 | if ((fileswitch & 2) == 0) /* Textfile wanted */ | |
1046 | in = fopen(infilename, "rt"); | |
1047 | else /* Binfile wanted */ | |
1048 | if ((in = fopen(infilename, "rb")) != NULL) | |
1049 | readwavheader( in); | |
1050 | } | |
1051 | if (in == NULL) | |
1052 | fatalerror("Error opening input file '%s': %s\n", infilename,strerror(errno)); | |
1053 | else | |
1054 | inform("Using file '%s' as input\n", infilename); | |
1055 | } | |
1056 | if ((fileswitch & 4) != 0) /* Outfile wanted */ | |
1057 | { | |
1058 | outfilename = parsefilearg( argcount, args); | |
1059 | if (outfilename == NULL) | |
1060 | argerrornum( NULL, ME_NOOUTFILE); | |
1061 | if (strcmp( outfilename, "-") == 0) | |
1062 | { | |
1063 | outfilename = "<stdout>"; | |
1064 | out = stdout; | |
1065 | } | |
1066 | else | |
1067 | { | |
1068 | ||
1069 | if ((fileswitch & 8) == 0) /* Textfile wanted */ | |
1070 | out = fopen(outfilename, "wt"); | |
1071 | else /* Binfile wanted */ | |
1072 | out = fopen(outfilename, "wb"); | |
1073 | } | |
1074 | if (out == NULL) | |
1075 | fatalerror("Error opening output file '%s': %s\n", outfilename,strerror(errno)); | |
1076 | else | |
1077 | inform("Using file '%s' as output\n", outfilename); | |
1078 | } | |
1079 | if ((fileswitch & 32) != 0) /* In-/Outfile wanted */ | |
1080 | { | |
1081 | assert (in == NULL && out == NULL); | |
1082 | infilename = outfilename = parsefilearg( argcount, args); | |
1083 | if (outfilename == NULL) | |
1084 | argerrornum( NULL, ME_NOIOFILE); | |
1085 | if (strcmp( infilename, "-") == 0) | |
1086 | argerrornum( infilename, ME_NOSTDIN); | |
1087 | inform("Using file '%s' as input/output\n", outfilename); | |
1088 | in = out = fopen(outfilename, "r+"); | |
1089 | if (out == NULL) | |
1090 | fatalerror("Error opening input/output file '%s': %s\n", outfilename,strerror(errno)); | |
1091 | ||
1092 | readwavheader( in); | |
1093 | } | |
1094 | if ((fileswitch & 16) == 0) /* No additional files wanted */ | |
1095 | { | |
1096 | if ((filename = parsefilearg( argcount, args)) != NULL) | |
1097 | argerrornum( filename, ME_TOOMANYFILES); | |
1098 | } | |
1099 | ||
1100 | /*-------------------------------------------------* | |
1101 | * Set samplefrequency, width, wavout, | |
1102 | *-------------------------------------------------*/ | |
1103 | parseintarg( argcount, args, "f", &samplefrequency); | |
1104 | wavout = parseswitcharg( argcount, args, "h"); | |
1105 | if (parseintarg( argcount, args, "w", &tempint)) | |
1106 | { | |
1107 | if (tempint != 16) | |
1108 | argerrortxt(NULL, "Option -w is only valid " | |
1109 | "with value 16. Sorry."); | |
1110 | else | |
1111 | samplewidth = tempint; | |
1112 | } | |
1113 | if (parseintarg( argcount, args, "c", &tempint)) | |
1114 | { | |
1115 | if (tempint != 1 && tempint != 2) | |
1116 | argerrortxt(NULL, "Option -c is only valid " | |
1117 | "with values 1 or 2. Sorry."); | |
1118 | else | |
1119 | channels = tempint; | |
1120 | } | |
1121 | /*-------------------------------------------------* | |
1122 | * Create WAV-header on output if wanted. * | |
1123 | *-------------------------------------------------*/ | |
1124 | if (wavout) | |
1125 | switch (fileswitch & (12)) | |
1126 | { | |
1127 | case 4: /* User wants header on textfile */ | |
1128 | argerrornum( NULL, ME_HEADERONTEXTFILE); | |
1129 | case 12: /* User wants header on binfile */ | |
1130 | makewavheader(); | |
1131 | break; | |
1132 | case 0: /* User wants header, but there is no outfile */ | |
1133 | /* Problem: what about i/o-file, 32? You might want a header | |
1134 | on that? Better ignore this case. */ | |
1135 | break; | |
1136 | case 8: /* An application musn't ask for this */ | |
1137 | default: /* This can't happen */ | |
1138 | assert( FALSE); | |
1139 | } | |
1140 | return; | |
1141 | } | |
1142 | ||
1143 | /* -------------------------------------------------------------------- | |
1144 | Returns the index 'i' of the first argument that IS an option, and | |
1145 | which begins with the label 's'. If there is none, -1. | |
1146 | We also mark that option as done with, i.e. we cross it out. | |
1147 | -------------------------------------------------------------------- */ | |
1148 | int findoption( int argcount, char *args[], char *s) | |
1149 | { | |
1150 | int i; | |
1151 | ||
1152 | if (test_usage) | |
1153 | printf("Checking for option -%s\n", s); | |
1154 | ||
1155 | for (i=1; i<argcount; i++) | |
1156 | { | |
1157 | if (isoptionchar (args[i][0]) && | |
1158 | strncmp( args[i] + 1, s, strlen( s)) == 0) | |
1159 | { | |
1160 | args[i][0] = '\0'; | |
1161 | return i; | |
1162 | } | |
1163 | } | |
1164 | return -1; | |
1165 | } | |
1166 | ||
1167 | /* -------------------------------------------------------------------- | |
1168 | Finishes off the .WAV header (if any) and exits correctly and formerly. | |
1169 | -------------------------------------------------------------------- */ | |
1170 | int myexit (int value) | |
1171 | { | |
1172 | switch (value) | |
1173 | { | |
1174 | case 0: | |
1175 | if (wavout) | |
1176 | makewavheader(); /* Writes a fully informed .WAV header */ | |
1177 | chat ("Success!\n"); | |
1178 | break; | |
1179 | default: | |
1180 | chat ("Failure.\n"); | |
1181 | break; | |
1182 | } | |
1183 | exit (value); | |
1184 | } | |
1185 | ||
1186 | /* -------------------------------------------------------------------- | |
1187 | Reads the stated input file bufferwise, calls the function 'work' | |
1188 | with the proper values, and writes the result to the stated output file. | |
1189 | Return value: TRUE on success, FALSE otherwise. | |
1190 | -------------------------------------------------------------------- */ | |
1191 | int workloop( FILE *theinfile, FILE *theoutfile, | |
1192 | int (*work)( short *buffer, int length) ) | |
1193 | { | |
1194 | short *buffer; | |
1195 | int length, nowlength; | |
1196 | ||
1197 | length = BUFFSIZE; | |
1198 | if ((buffer = malloc( sizeof(short) * length)) == NULL) | |
1199 | fatalperror (""); | |
1200 | while (TRUE) | |
1201 | { | |
1202 | nowlength = fread(buffer, sizeof(short), length, theinfile); | |
1203 | if (ferror( theinfile) != 0) | |
1204 | fatalperror("Error reading input file"); | |
1205 | if (nowlength == 0) /* Reached end of input file */ | |
1206 | break; | |
1207 | /* Call the routine that does the work */ | |
1208 | if (!work (buffer, nowlength)) /* On error, stop. */ | |
1209 | return FALSE; | |
1210 | fwrite(buffer, sizeof(short), nowlength, theoutfile); | |
1211 | if (ferror( theoutfile) != 0) | |
1212 | fatalperror("Error writing to output file"); | |
1213 | } | |
1214 | return TRUE; /* Input file done with, no errors. */ | |
1215 | } | |
1216 | ||
1217 | int chat( const char *format, ...) | |
1218 | { | |
1219 | va_list ap; | |
1220 | int result = 0; | |
1221 | ||
1222 | if (verboselevel > 5) | |
1223 | { | |
1224 | va_start( ap, format); | |
1225 | result = vfprintf( stderr, format, ap); | |
1226 | va_end( ap); | |
1227 | } | |
1228 | return result; | |
1229 | } | |
1230 | ||
1231 | ||
1232 | int inform( const char *format, ...) | |
1233 | { | |
1234 | va_list ap; | |
1235 | int result = 0; | |
1236 | ||
1237 | if (verboselevel > 1) | |
1238 | { | |
1239 | va_start( ap, format); | |
1240 | result = vfprintf( stderr, format, ap); | |
1241 | va_end( ap); | |
1242 | } | |
1243 | return result; | |
1244 | } | |
1245 | ||
1246 | int error( const char *format, ...) | |
1247 | { | |
1248 | va_list ap; | |
1249 | int result; | |
1250 | ||
1251 | va_start( ap, format); | |
1252 | result = vfprintf( stderr, format, ap); | |
1253 | va_end( ap); | |
1254 | return result; | |
1255 | } | |
1256 | ||
1257 | void fatalerror( const char *format, ...) | |
1258 | { | |
1259 | va_list ap; | |
1260 | ||
1261 | va_start( ap, format); | |
1262 | vfprintf( stderr, format, ap); | |
1263 | va_end( ap); | |
1264 | myexit(1); | |
1265 | } | |
1266 | ||
1267 | void fatalperror( const char *string) | |
1268 | { | |
1269 | perror( string); | |
1270 | myexit( 1); | |
1271 | } | |
1272 | ||
1273 | int say( const char *format, ...) | |
1274 | { | |
1275 | va_list ap; | |
1276 | int result; | |
1277 | ||
1278 | va_start( ap, format); | |
1279 | result = vfprintf( stdout, format, ap); | |
1280 | va_end( ap); | |
1281 | return result; | |
1282 | } | |
1283 | ||
1284 | ||
1285 | char *malloccopy( char *string) | |
1286 | { | |
1287 | char *result; | |
1288 | ||
1289 | result = malloc( strlen( string) + 1); | |
1290 | if (result != NULL) | |
1291 | strcpy( result, string); | |
1292 | return result; | |
1293 | } | |
1294 | ||
1295 | ||
1296 | char *mallocconcat( char *one, char *two) | |
1297 | { | |
1298 | char *result; | |
1299 | ||
1300 | result = malloc( strlen( one) + strlen( two) + 1); | |
1301 | if (result != NULL) | |
1302 | { | |
1303 | strcpy( result, one); | |
1304 | strcat( result, two); | |
1305 | } | |
1306 | return result; | |
1307 | } | |
1308 | ||
1309 | double double2db( double value) | |
1310 | { | |
1311 | if (value < 0) | |
1312 | value = -value; | |
1313 | return 6.0 * log( value / 32767) / log( 2); | |
1314 | } | |
1315 | ||
1316 | void readawaysamples( FILE *in, size_t size) | |
1317 | { | |
1318 | short *buffer; | |
1319 | int samplesread, count; | |
1320 | ||
1321 | buffer = malloc( sizeof( *buffer) * BUFFSIZE); | |
1322 | if (buffer == NULL) fatalperror("Couldn't allocate buffer"); | |
1323 | ||
1324 | while (size > 0) | |
1325 | { | |
1326 | if (size > BUFFSIZE) | |
1327 | count = BUFFSIZE; | |
1328 | else | |
1329 | count = size; | |
1330 | ||
1331 | samplesread = fread( buffer, sizeof(*buffer), count, in); | |
1332 | if (ferror( in) != 0) | |
1333 | fatalperror("Error reading input file"); | |
1334 | size -= samplesread; | |
1335 | } | |
1336 | free( buffer); | |
1337 | } | |
1338 | ||
1339 | /**************************************************************************** | |
1340 | * | |
1341 | * Programs for processing sound files in raw- or WAV-format. | |
1342 | * -- Merge two mono WAV-files to one stereo WAV-file. | |
1343 | * | |
1344 | * Name: stereorize.c | |
1345 | * Version: 1.1 | |
1346 | * Author: Mark Roberts <mark@manumark.de> | |
1347 | * Michael Labuschke <michael@labuschke.de> | |
1348 | * | |
1349 | ****************************************************************************/ | |
1350 | ||
1351 | #include <stdio.h> | |
1352 | #include <stdlib.h> | |
1353 | #include <string.h> | |
1354 | #include <errno.h> | |
1355 | #include <time.h> | |
1356 | #include <assert.h> | |
1357 | ||
1358 | static char *Version = "stereorize 1.1, November 5th 2000"; | |
1359 | static char *Usage = | |
1360 | "Usage: stereorize [options] infile-left infile-right outfile\n\n" | |
1361 | ||
1362 | "Example:\n" | |
1363 | " stereorize left.wav right.wav stereo.wav -h\n\n" | |
1364 | ||
1365 | "Creates stereo.wav (with WAV-header, option -h) from data in mono files\n" | |
1366 | "left.wav and right.wav.\n" | |
1367 | ; | |
1368 | ||
1369 | int main( int argcount, char *args[]) | |
1370 | { | |
1371 | int i, k[2], maxk, stdin_in_use=FALSE; | |
1372 | short *leftsample, *rightsample, *stereosample; | |
1373 | FILE *channel[2]; | |
1374 | char *filename[2], *tempname; | |
1375 | ||
1376 | version = Version; | |
1377 | usage = Usage; | |
1378 | ||
1379 | channel[0] = NULL; | |
1380 | channel[1] = NULL; | |
1381 | ||
1382 | parseargs( argcount, args, NOFILES | NOCOMPLAIN); | |
1383 | ||
1384 | for (i = 0; i < 2; i++) | |
1385 | { | |
1386 | filename[i] = parsefilearg( argcount, args); | |
1387 | if (filename[i] == NULL) | |
1388 | argerrornum( NULL, ME_NOTENOUGHFILES); | |
1389 | if (strcmp (filename[i], "-") == 0) | |
1390 | { | |
1391 | if (stdin_in_use) | |
1392 | argerrortxt( filename[i] + 1, | |
1393 | "Cannot use <stdin> for both input files"); | |
1394 | filename[i] = "<stdin>"; | |
1395 | channel[i] = stdin; | |
1396 | stdin_in_use = TRUE; | |
1397 | } | |
1398 | else | |
1399 | { | |
1400 | channel[i] = fopen(filename[i], "rb"); | |
1401 | } | |
1402 | if (channel[i] == NULL) | |
1403 | fatalerror( "Error opening input file '%s': %s\n", filename[i],strerror(errno)); | |
1404 | else | |
1405 | inform("Using file '%s' as input\n", filename[i]); | |
1406 | } | |
1407 | for (i = 0; i < 2; i++) | |
1408 | { | |
1409 | assert ( channel[i] != NULL); | |
1410 | readwavheader( channel[i]); | |
1411 | if (iswav && channels != 1) | |
1412 | inform("Warning: '%s' is no mono file\n", filename[i]); | |
1413 | } | |
1414 | ||
1415 | outfilename = parsefilearg( argcount, args); | |
1416 | if (outfilename == NULL) argerrornum( NULL, ME_NOOUTFILE); | |
1417 | if (strcmp (outfilename, "-") == 0) | |
1418 | { | |
1419 | outfilename = "<stdout>"; | |
1420 | out = stdout; | |
1421 | } | |
1422 | else | |
1423 | { | |
1424 | out = fopen(outfilename, "wb"); | |
1425 | } | |
1426 | if (out == NULL) | |
1427 | fatalerror( "Error opening output file '%s': %s\n", outfilename,strerror(errno)); | |
1428 | else | |
1429 | inform("Using file '%s' as output\n", outfilename); | |
1430 | ||
1431 | if ((tempname = parsefilearg( argcount, args)) != NULL) | |
1432 | argerrornum( tempname, ME_TOOMANYFILES); | |
1433 | ||
1434 | checknoargs(argcount, args); /* Check that no arguments are left */ | |
1435 | ||
1436 | leftsample = malloc( sizeof(*leftsample) * BUFFSIZE); | |
1437 | rightsample = malloc( sizeof(*leftsample) * BUFFSIZE); | |
1438 | stereosample = malloc( sizeof(*leftsample) * 2 * BUFFSIZE); | |
1439 | if (leftsample == NULL || rightsample == NULL || stereosample == NULL) | |
1440 | fatalperror (""); | |
1441 | ||
1442 | channels = 2; /* Output files are stereo */ | |
1443 | if (wavout) | |
1444 | { | |
1445 | if ((strcmp(outfilename,"<stdout>")!=0) && (fseek( out, 0, SEEK_SET) != 0)) | |
1446 | fatalerror("Couldn't navigate output file '%s': %s\n",outfilename, strerror(errno)); | |
1447 | makewavheader(); | |
1448 | } | |
1449 | ||
1450 | startstopwatch(); | |
1451 | while (TRUE) | |
1452 | { | |
1453 | maxk = 0; | |
1454 | for (i = 0; i < 2; i++) | |
1455 | { | |
1456 | k[i] = fread(i==0? leftsample : rightsample, | |
1457 | sizeof(*leftsample), | |
1458 | BUFFSIZE, | |
1459 | channel[i]); | |
1460 | if (k[i] == -1) | |
1461 | fatalerror("Error reading file '%s': %s\n", filename[i],strerror(errno)); | |
1462 | if (k[i] > maxk) | |
1463 | maxk = k[i]; | |
1464 | } | |
1465 | if (maxk == 0) | |
1466 | myexit (0); | |
1467 | ||
1468 | /*-------------------------------------------------* | |
1469 | * First the left channel as far as it goes ... * | |
1470 | *-------------------------------------------------*/ | |
1471 | for (i = 0; i < k[0]; i++) | |
1472 | stereosample[2 * i] = leftsample[i]; | |
1473 | /*-------------------------------------------------* | |
1474 | * ... and fill up till the end of this buffer. * | |
1475 | *-------------------------------------------------*/ | |
1476 | for (; i < maxk; i++) | |
1477 | stereosample[2 * i] = 0; | |
1478 | ||
1479 | /*-------------------------------------------------* | |
1480 | * Next the right channel as far as it goes ... * | |
1481 | *-------------------------------------------------*/ | |
1482 | for (i = 0; i < k[1]; i++) | |
1483 | stereosample[2 * i + 1] = rightsample[i]; | |
1484 | /*-------------------------------------------------* | |
1485 | * ... and fill up till the end of this buffer. * | |
1486 | *-------------------------------------------------*/ | |
1487 | for (; i < maxk; i++) | |
1488 | stereosample[2 * i + 1] = 0; | |
1489 | ||
1490 | fwrite(stereosample, sizeof(*leftsample), 2 * maxk, out); | |
1491 | if (ferror( out) != 0) | |
1492 | fatalerror("Error writing to file '%s': %s\n", | |
1493 | outfilename, strerror(errno)); | |
1494 | } | |
1495 | /* That was an endless loop. This point is never reached. */ | |
1496 | } |