FMOD_RESULT F_CALLBACK pcmreadcallback(FMOD_SOUND *sound, void *data, unsigned int datalen)
{
FMOD_RESULT result;
unsigned int read;
EnterCriticalSection(&decodecrit);
if (!decodesound)
{
return FMOD_ERR_FILE_EOF;
}
result = FMOD_Sound_ReadData(decodesound, data, datalen, &read);
if (result == FMOD_ERR_FILE_EOF) /* Handle looping. */
{
FMOD_Sound_SeekData(decodesound, 0);
datalen -= read;
result = FMOD_Sound_ReadData(decodesound, (char *)data + read, datalen, &read);
}
LeaveCriticalSection(&decodecrit);
return FMOD_OK;
}
int main(int argc, char *argv[])
{
FMOD_SYSTEM *system;
FMOD_SOUND *sound;
FMOD_RESULT result;
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;
}
result = FMOD_System_Init(system, 1, FMOD_INIT_NORMAL, 0);
ERRCHECK(result);
result = FMOD_System_CreateStream(system, "../media/wave.mp3", FMOD_OPENONLY | FMOD_ACCURATETIME, 0, &sound);
ERRCHECK(result);
printf("===============================================================================\n");
printf("Offline Decoding Example. Copyright (c) Firelight Technologies 2004-2014.\n");
printf("===============================================================================\n");
printf("\n");
printf("This program will open wave.mp3 and decode it into wave.raw using the\n");
printf("FMOD_Sound_ReadData function.\n");
printf("\n");
/*
Decode the sound and write it to a .raw file.
*/
{
void *data;
unsigned int length = 0, read;
unsigned int bytesread;
FILE *outfp;
#define CHUNKSIZE 4096
result = FMOD_Sound_GetLength(sound, &length, FMOD_TIMEUNIT_PCMBYTES);
ERRCHECK(result);
outfp = fopen("output.raw", "wb");
if (!outfp)
{
printf("Error! Could not open output.raw output file.\n");
return 0;
}
data = malloc(CHUNKSIZE);
if (!data)
{
printf("Error! Failed to allocate %d bytes.\n", CHUNKSIZE);
return 0;
}
bytesread = 0;
do
{
result = FMOD_Sound_ReadData(sound, (char *)data, CHUNKSIZE, &read);
fwrite((char *)data, read, 1, outfp);
bytesread += read;
printf("writing %d bytes of %d to output.raw\r", bytesread, length);
}
while (result == FMOD_OK && read == CHUNKSIZE);
/*
Loop terminates when either
1. the read function returns an error. (ie FMOD_ERR_FILE_EOF etc).
2. the amount requested was different to the amount returned. (somehow got an EOF without the file error, maybe a non stream file format like mod/s3m/xm/it/midi).
If 'bytesread' is bigger than 'length' then it just means that FMOD miscalculated the size,
but this will not usually happen if FMOD_ACCURATETIME is used. (this will give the correct length for VBR formats)
*/
printf("\n");
if (outfp)
{
fclose(outfp);
}
}
printf("\n");
/*
Shut down
*/
result = FMOD_Sound_Release(sound);
ERRCHECK(result);
result = FMOD_System_Close(system);
ERRCHECK(result);
result = FMOD_System_Release(system);
ERRCHECK(result);
return 0;
}
float JiwokFMODWrapper::GetBPM(const char *filename)
{
FMOD_SYSTEM *system;
FMOD_SOUND *sound;
FMOD_RESULT result;
unsigned int version;
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;
}
result = FMOD_System_Init(system, 1, FMOD_INIT_NORMAL, 0);
ERRCHECK(result);
result = FMOD_System_CreateStream(system,filename, FMOD_OPENONLY | FMOD_ACCURATETIME, 0, &sound);
// ERRCHECK(result);
unsigned int length = 0;
int channels = 0, bits = 0;
float frequency = 0;
float volume = 0, pan = 0;
int priority = 0;
FMOD_SOUND_TYPE stype;
FMOD_SOUND_FORMAT format;
result = FMOD_Sound_GetLength(sound, &length, FMOD_TIMEUNIT_PCMBYTES);
ERRCHECK(result);
result = FMOD_Sound_GetDefaults(sound, &frequency, &volume, &pan, &priority);
ERRCHECK(result);
result = FMOD_Sound_GetFormat(sound, &stype, &format, &channels, &bits);
ERRCHECK(result);
printf("result is %d",result);
soundtouch::BPMDetect *bpm = new soundtouch::BPMDetect(channels,frequency);
//void *data;
//unsigned int read;
unsigned int bytesread;
#define CHUNKSIZE 32768 //4096
// #define CHUNKSIZE 4096
bytesread = 0;
soundtouch::SAMPLETYPE* samples = new soundtouch::SAMPLETYPE[CHUNKSIZE];
int sbytes = bits / 8;
const unsigned int NUMSAMPLES = CHUNKSIZE;
unsigned int bytes = NUMSAMPLES * sbytes;
unsigned int readbytes = 0;
do
{
readbytes = 0;
if(sbytes == 2)
{
long int data[32768];
result = FMOD_Sound_ReadData(sound, data, bytes, &readbytes );
if(!result == FMOD_OK) break;
for ( unsigned int i = 0; i < readbytes/sbytes; ++i )
samples[i] = (float) data[i] / 32768;
}
else if(sbytes == 1)
{
long int data[32768];
result = FMOD_Sound_ReadData(sound, data, bytes, &readbytes );
if(!result == FMOD_OK) break;
for ( unsigned int i = 0; i < (readbytes); ++i )
samples[i] = (float) data[i] / 128;
}
bpm->inputSamples(samples, (readbytes /sbytes)/ channels );
bytesread += readbytes;
}
while (result == FMOD_OK && readbytes == CHUNKSIZE*2);
result = FMOD_Sound_Release(sound);
ERRCHECK(result);
result = FMOD_System_Close(system);
ERRCHECK(result);
result = FMOD_System_Release(system);
ERRCHECK(result);
float bpmg = bpm->getBpm();
float bpm1 = bpmg;
if ( bpmg < 1 ) return 0.;
while ( bpmg > 190 ) bpmg /= 2.;
while ( bpmg < 50 ) bpmg *= 2.;
printf("bpmg bpmg is %f bpm %f",bpmg,bpm1);
return bpmg;
}
