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Copy pathQSSpeakerPhoneDialer.m
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QSSpeakerPhoneDialer.m
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#import "QSSpeakerPhoneDialer.h"
#define FADEIN 3.0
#define FADEOUT 0.0
#define DURATION 0.2
#define PAUSE 0.05
@implementation QSSpeakerPhoneDialer
+ (id)sharedInstance{
static id _sharedInstance;
if (!_sharedInstance) _sharedInstance = [[[self class] allocWithZone:[self zone]] init];
return _sharedInstance;
}
- (BOOL)removePlaybackCallback:(void *)outputCallback{
OSStatus err;
UInt32 property_size;
// AudioStreamBasicDescription outputStreamDescription;
// double sampleRate;
outputDevice = 0;
property_size = sizeof(AudioDeviceID);
err =AudioDeviceStop(outputDevice, outputCallback);
if (err)NSLog(@"unable to stop");
err = AudioDeviceRemoveIOProc(outputDevice, outputCallback);
if (err)NSLog(@"unable to remove");
return(YES);
}
- (BOOL)setupPlaybackCallback:(void *)outputCallback userInfo:(MyUserInfo *)userInfo{
OSStatus err;
UInt32 property_size;
AudioStreamBasicDescription outputStreamDescription;
// double sampleRate;
outputDevice = 0;
property_size = sizeof(AudioDeviceID);
err = AudioHardwareGetProperty(kAudioHardwarePropertyDefaultOutputDevice, &property_size, &outputDevice);
if(kAudioDeviceUnknown != outputDevice && kAudioHardwareNoError == err)
{
err = AudioDeviceAddIOProc(outputDevice, outputCallback, userInfo);
if(kAudioHardwareNoError == err)
{
property_size = sizeof(outputStreamDescription);
err = AudioDeviceGetProperty(outputDevice, 0, FALSE, kAudioDevicePropertyStreamFormat, &property_size, &outputStreamDescription);
if(kAudioHardwareNoError == err)
{
return(YES);
}
}
}
return(NO);
}
OSStatus playbackCallback(AudioDeviceID device, const AudioTimeStamp *now, const AudioBufferList *input_data, const AudioTimeStamp *input_time, AudioBufferList *output_data, const AudioTimeStamp *output_time, void *client_data)
{
register int channels;
register int frames;
register float left;
register float right;
register float *new_data;
register float position;
register float position2;
register float volume;
register float incr;
register float incr2;
register MyUserInfo *userInfo;
userInfo = (MyUserInfo *)client_data;
new_data = (float *)(output_data->mBuffers[0].mData); // Get pointer to the output buffer (here we store the data we want to be played)
channels = output_data->mBuffers[0].mNumberChannels; // Get number of channels
frames = (output_data->mBuffers[0].mDataByteSize / sizeof(float)) / channels; // Get number of frames we can store. Note: I assume we'll always get the data as floats, change the sizeof(float) if you expect data of another size!
volume = userInfo->volume;
incr = userInfo->frequency / 44100.0;
incr2 = userInfo->frequency2 / 44100.0;
position = userInfo->lastPosition;
position2 = userInfo->lastPosition2;
printf("data, %f",position);
while(frames--){ // I assume 2 channels, non-interleaved, float32 format!
left = sin(position * 2.0 * M_PI)/2;
left+=sin(position2 * 2.0 * M_PI)/2;
left*= volume;
if (position<FADEIN)
left *=(position/FADEIN);
position += incr;
position2 += incr2;
right = left;
*new_data++ = left;
*new_data++ = right;
}
userInfo->lastPosition = position;
userInfo->lastPosition2 = position2;
return(kAudioHardwareNoError);
}
- (id)init
{
self = [super init];
if(self)
{
myUserInfo = (MyUserInfo *) malloc(sizeof(MyUserInfo));
memset(myUserInfo, 0, sizeof(*myUserInfo));
myUserInfo->lastPosition = 0.0; // internal variable
myUserInfo->frequency = 1000.0; // tone frequency
myUserInfo->volume = 0.215; // tone volume
[self setupPlaybackCallback:playbackCallback userInfo:myUserInfo];
}
return(self);
}
- (void)dealloc{
[self removePlaybackCallback:playbackCallback];
free(myUserInfo);
}
- (BOOL)dialString:(NSString *)string{
OSStatus err;
const char *sequence=[string UTF8String];
char c;
int i;
for(i=0;sequence[i];i++){
c=sequence[i];
// NSLog(@"playchar %c",c);
switch (c){
case 'a': case 'b': case 'c':
case 'A': case 'B': case 'C':
c='2';
break;
case 'd': case 'e': case 'f':
case 'D': case 'E': case 'F':
c='3';
break;
case 'g': case 'h': case 'i':
case 'G': case 'H': case 'I':
c='4';
break;
case 'j': case 'k': case 'l':
case 'J': case 'K': case 'L':
c='5';
break;
case 'm': case 'n': case 'o':
case 'M': case 'N': case 'O':
c='6';
break;
case 'p': case 'q': case 'r': case 's':
case 'P': case 'Q': case 'R': case 'S':
c='7';
break;
case 't': case 'u': case 'v':
case 'T': case 'U': case 'V':
c='8';
break;
case 'w': case 'x': case 'y': case 'z':
case 'W': case 'X': case 'Y': case 'Z':
c='8';
break;
case ',':
[NSThread sleepUntilDate:[NSDate dateWithTimeIntervalSinceNow:1.0]];
continue;
}
switch (c){
case '1': case '2': case '3':
myUserInfo->frequency = 697.0;
break;
case '4': case '5': case '6':
myUserInfo->frequency = 770.0;
break;
case '7': case '8': case '9':
myUserInfo->frequency = 852.0;
break;
case '0': case '*': case '#':
myUserInfo->frequency = 941.0;
break;
default:
continue;
}
switch (c){
case '1': case '4': case '7': case '*':
myUserInfo->frequency2 = 1209.0;
break;
case '2': case '5': case '8': case '0':
myUserInfo->frequency2 = 1336.0;
break;
case '3': case '6': case '9': case '#':
myUserInfo->frequency2 = 1477.0;
break;
}
myUserInfo->volume=1.0;
myUserInfo->lastPosition = 0.0;
myUserInfo->lastPosition2 = 0.0;
err = AudioDeviceStart(outputDevice, playbackCallback);
if(kAudioHardwareNoError == err)
{
[NSThread sleepUntilDate:[NSDate dateWithTimeIntervalSinceNow:DURATION]];
float f;
if (FADEOUT>0.0){
for (f=1.0;f>=0.0;f-=0.1){
myUserInfo->volume=f;
[NSThread sleepUntilDate:[NSDate dateWithTimeIntervalSinceNow:FADEOUT/10]];
}
}
}
err = AudioDeviceStop(outputDevice, playbackCallback);
if(kAudioHardwareNoError == err);
[NSThread sleepUntilDate:[NSDate dateWithTimeIntervalSinceNow:PAUSE]];
}
return YES;
}
@end