1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
|
/*===============================================================================================
Record example
Copyright (c), Firelight Technologies Pty, Ltd 2004-2011.
This example shows how to record a sound, then write it to a wav file.
It then shows how to play a sound while it is being recorded to. Because it is recording, the
sound playback has to be delayed a little bit so that the playback doesn't play part of the
buffer that is still being written to.
===============================================================================================*/
#include <fmodex/fmod.h>
#include <fmodex/fmod_errors.h>
#include "wincompat.h"
#include <string.h>
void ERRCHECK(FMOD_RESULT result)
{
if (result != FMOD_OK)
{
printf("FMOD error! (%d) %s\n", result, FMOD_ErrorString(result));
exit(-1);
}
}
#if defined(WIN32) || defined(__WATCOMC__) || defined(_WIN32) || defined(__WIN32__)
#define __PACKED /* dummy */
#else
#define __PACKED __attribute__((packed)) /* gcc packed */
#endif
/*
[
[DESCRIPTION]
Writes out the contents of a record buffer to a file.
[PARAMETERS]
[RETURN_VALUE]
void
[REMARKS]
]
*/
void SaveToWav(FMOD_SOUND *sound)
{
FILE *fp;
int channels, bits;
float rate;
void *ptr1, *ptr2;
unsigned int lenbytes, len1, len2;
if (!sound)
{
return;
}
FMOD_Sound_GetFormat (sound, 0, 0, &channels, &bits);
FMOD_Sound_GetDefaults(sound, &rate, 0, 0, 0);
FMOD_Sound_GetLength (sound, &lenbytes, FMOD_TIMEUNIT_PCMBYTES);
{
#if defined(WIN32) || defined(_WIN64) || defined(__WATCOMC__) || defined(_WIN32) || defined(__WIN32__)
#pragma pack(1)
#endif
/*
WAV Structures
*/
typedef struct
{
signed char id[4];
int size;
} RiffChunk;
struct
{
RiffChunk chunk __PACKED;
unsigned short wFormatTag __PACKED; /* format type */
unsigned short nChannels __PACKED; /* number of channels (i.e. mono, stereo...) */
unsigned int nSamplesPerSec __PACKED; /* sample rate */
unsigned int nAvgBytesPerSec __PACKED; /* for buffer estimation */
unsigned short nBlockAlign __PACKED; /* block size of data */
unsigned short wBitsPerSample __PACKED; /* number of bits per sample of mono data */
} __PACKED FmtChunk = { {{'f','m','t',' '}, sizeof(FmtChunk) - sizeof(RiffChunk) }, 1, channels, (int)rate, (int)rate * channels * bits / 8, 1 * channels * bits / 8, bits };
struct
{
RiffChunk chunk;
} DataChunk = { {{'d','a','t','a'}, lenbytes } };
struct
{
RiffChunk chunk;
signed char rifftype[4];
} WavHeader = { {{'R','I','F','F'}, sizeof(FmtChunk) + sizeof(RiffChunk) + lenbytes }, {'W','A','V','E'} };
#if defined(WIN32) || defined(_WIN64) || defined(__WATCOMC__) || defined(_WIN32) || defined(__WIN32__)
#pragma pack()
#endif
fp = fopen("record.wav", "wb");
/*
Write out the WAV header.
*/
fwrite(&WavHeader, sizeof(WavHeader), 1, fp);
fwrite(&FmtChunk, sizeof(FmtChunk), 1, fp);
fwrite(&DataChunk, sizeof(DataChunk), 1, fp);
/*
Lock the sound to get access to the raw data.
*/
FMOD_Sound_Lock(sound, 0, lenbytes, &ptr1, &ptr2, &len1, &len2);
/*
Write it to disk.
*/
fwrite(ptr1, len1, 1, fp);
/*
Unlock the sound to allow FMOD to use it again.
*/
FMOD_Sound_Unlock(sound, ptr1, ptr2, len1, len2);
fclose(fp);
}
}
int main(int argc, char *argv[])
{
FMOD_SYSTEM *system = 0;
FMOD_SOUND *sound = 0;
//FMOD_CHANNEL *channel = 0;
FMOD_RESULT result;
FMOD_CREATESOUNDEXINFO exinfo;
int key, driver, recorddriver, numdrivers, count;
unsigned int version;
/*
Create a System object and initialize.
*/
result = FMOD_System_Create(&system);
ERRCHECK(result);
result = FMOD_System_GetVersion(system, &version);
ERRCHECK(result);
if (version < FMOD_VERSION)
{
printf("Error! You are using an old version of FMOD %08x. This program requires %08x\n", version, FMOD_VERSION);
return 0;
}
/*
System initialization
*/
printf("---------------------------------------------------------\n");
printf("Select OUTPUT type\n");
printf("---------------------------------------------------------\n");
printf("1 : OSS - Open Sound System\n");
printf("2 : ALSA - Advanced Linux Sound Architecture\n");
printf("3 : ESD - Enlightenment Sound Daemon\n");
printf("---------------------------------------------------------\n");
printf("Press a corresponding number or ESC to quit\n");
do
{
key = getch();
} while (key != 27 && key < '1' && key > '5');
switch (key)
{
case '1' : result = FMOD_System_SetOutput(system, FMOD_OUTPUTTYPE_OSS);
break;
case '2' : result = FMOD_System_SetOutput(system, FMOD_OUTPUTTYPE_ALSA);
break;
case '3' : result = FMOD_System_SetOutput(system, FMOD_OUTPUTTYPE_ESD);
break;
default : return 1;
}
ERRCHECK(result);
/*
Enumerate playback devices
*/
result = FMOD_System_GetNumDrivers(system, &numdrivers);
ERRCHECK(result);
printf("---------------------------------------------------------\n");
printf("Choose a PLAYBACK driver\n");
printf("---------------------------------------------------------\n");
for (count=0; count < numdrivers; count++)
{
char name[256];
result = FMOD_System_GetDriverInfo(system, count, name, 256, 0);
ERRCHECK(result);
printf("%d : %s\n", count + 1, name);
}
printf("---------------------------------------------------------\n");
printf("Press a corresponding number or ESC to quit\n");
do
{
key = getch();
if (key == 27)
{
return 0;
}
driver = key - '1';
} while (driver < 0 || driver >= numdrivers);
result = FMOD_System_SetDriver(system, driver);
ERRCHECK(result);
/*
Enumerate record devices
*/
result = FMOD_System_GetRecordNumDrivers(system, &numdrivers);
ERRCHECK(result);
printf("---------------------------------------------------------\n");
printf("Choose a RECORD driver\n");
printf("---------------------------------------------------------\n");
for (count=0; count < numdrivers; count++)
{
char name[256];
result = FMOD_System_GetRecordDriverInfo(system, count, name, 256, 0);
ERRCHECK(result);
printf("%d : %s\n", count + 1, name);
}
printf("---------------------------------------------------------\n");
printf("Press a corresponding number or ESC to quit\n");
recorddriver = 0;
do
{
key = getch();
if (key == 27)
{
return 0;
}
recorddriver = key - '1';
} while (recorddriver < 0 || recorddriver >= numdrivers);
printf("\n");
result = FMOD_System_Init(system, 32, FMOD_INIT_NORMAL, NULL);
ERRCHECK(result);
memset(&exinfo, 0, sizeof(FMOD_CREATESOUNDEXINFO));
exinfo.cbsize = sizeof(FMOD_CREATESOUNDEXINFO);
exinfo.numchannels = 1;
exinfo.format = FMOD_SOUND_FORMAT_PCM16;
exinfo.defaultfrequency = 44100;
exinfo.length = exinfo.defaultfrequency * sizeof(short) * exinfo.numchannels * 5;
result = FMOD_System_CreateSound(system, 0, FMOD_2D | FMOD_SOFTWARE | FMOD_OPENUSER, &exinfo, &sound);
ERRCHECK(result);
printf("===================================================================\n");
printf("Recording example. Copyright (c) Firelight Technologies 2004-2011.\n");
printf("===================================================================\n");
printf("\n");
printf("Press 'r' to record a 5 second segment of audio and write it to a wav file.\n");
printf("Press 'p' to play the 5 second segment of audio.\n");
printf("Press 'l' to turn looping on/off.\n");
printf("Press 's' to stop recording and playback.\n");
printf("Press 'w' to save the 5 second segment to a wav file.\n");
printf("Press 'Esc' to quit\n");
printf("\n");
/*
Main loop.
*/
do
{
static FMOD_CHANNEL *channel = 0;
static int looping = 0;
int recording = 0;
int playing = 0;
unsigned int recordpos = 0;
unsigned int playpos = 0;
unsigned int length;
if (kbhit())
{
key = getch();
switch (key)
{
case 'r' :
case 'R' :
{
result = FMOD_System_RecordStart(system, recorddriver, sound, looping);
ERRCHECK(result);
break;
}
case 'p' :
case 'P' :
{
if (looping)
{
FMOD_Sound_SetMode(sound, FMOD_LOOP_NORMAL);
}
else
{
FMOD_Sound_SetMode(sound, FMOD_LOOP_OFF);
}
ERRCHECK(result);
result = FMOD_System_PlaySound(system, FMOD_CHANNEL_REUSE, sound, 0, &channel);
ERRCHECK(result);
break;
}
case 'l' :
case 'L' :
{
looping = !looping;
break;
}
case 's' :
case 'S' :
{
result = FMOD_System_RecordStop(system, recorddriver);
if (channel)
{
FMOD_Channel_Stop(channel);
channel = 0;
}
break;
}
case 'w' :
case 'W' :
{
printf("Writing to record.wav ... \r");
SaveToWav(sound);
Sleep(500);
break;
}
}
}
FMOD_Sound_GetLength(sound, &length, FMOD_TIMEUNIT_PCM);
ERRCHECK(result);
FMOD_System_IsRecording(system, recorddriver, &recording);
ERRCHECK(result);
FMOD_System_GetRecordPosition(system, recorddriver, &recordpos);
ERRCHECK(result);
if (channel)
{
FMOD_Channel_IsPlaying(channel, &playing);
ERRCHECK(result);
FMOD_Channel_GetPosition(channel, &playpos, FMOD_TIMEUNIT_PCM);
ERRCHECK(result);
}
printf("State: %-19s. Record pos = %6d : Play pos = %6d : Loop %-3s\r", recording ? playing ? "Recording / playing" : "Recording" : playing ? "Playing" : "Idle", recordpos, playpos, looping ? "On" : "Off");
fflush(stdout);
FMOD_System_Update(system);
Sleep(10);
} while (key != 27);
printf("\n");
/*
Shut down
*/
result = FMOD_Sound_Release(sound);
ERRCHECK(result);
result = FMOD_System_Release(system);
ERRCHECK(result);
return 0;
} |
Capture audio en C
Répondre avec citation
Partager