int main(int argc, char *argv[]) {
char *filename;
AIFF_Ref ref;
uint64_t seconds, nSamples;
int channels;
double samplingRate;
int bitsPerSample;
int segmentSize;
float buf[BUF_SIZE];
int sampleCount;
if (argc < 2) {
fprintf(stderr, "Usage: %s <file.aiff>\n", argv[0]);
exit(-1);
}
filename = argv[1];
if((ref = AIFF_OpenFile(filename, F_RDONLY)) == NULL) {
fprintf(stderr, "Unable to open %s\n", filename);
exit(-1);
}
if(AIFF_GetAudioFormat(ref, &nSamples, &channels,
&samplingRate, &bitsPerSample,
&segmentSize) < 1) {
fprintf(stderr, "Unable to get audio format for %s\n", filename);
exit(-1);
}
seconds = nSamples / samplingRate ;
/*
* Print out the seconds in H:MM:SS format
*/
printf("Length: %lu:%02lu:%02lu \n", (unsigned long) seconds/3600,
(unsigned long) (seconds/60)%60, (unsigned long) seconds%60 );
std::cerr << filename << ":\n\t" <<
"channels=" << channels <<
", sampleRate=" << samplingRate <<
", bytesPerSample=" << bitsPerSample / 8 <<
", numSamples=" << nSamples <<
", segmentSize=" << segmentSize <<
std::endl;
int c = 0;
while ((sampleCount = AIFF_ReadSamplesFloat(ref, buf, BUF_SIZE)) > 0) {
int i;
for (i = 0; i < sampleCount; i++) {
//printf("Sample %d: %f\n", c, buf[i]);
c++;
}
}
return 0;
}
//--------------------------------------------------------------
void ofApp::keyReleased(int key){
if(key=='c') {
cuttype = 1-cuttype;
if(cuttype==0) themess = "cuttype is square";
if(cuttype==1) themess = "cuttype is beats";
}
if(key=='s') {
// draw picture
themess = "sound to picture... saving";
cout << "sound to picture... saving" << endl;
const vector<float>& rawSamples = audio.getRawSamples();
int channels = audio.getChannels();
int n = rawSamples.size();
if(cuttype==0) { // square picture
int s = int(sqrt(n/channels));
cout << "img size: " << s << " by " << s << endl;
img.allocate(s, s, OF_IMAGE_COLOR);
int iptr = 0; // which audio sample are we on?
for(int i = 0;i<s;i++)
{
for(int j = 0;j<s;j++)
{
float r = ofMap(rawSamples[iptr], -1., 1., 0., 65535.); // left side
float g = ofMap(rawSamples[iptr+1], -1., 1., 0., 65535.); // right side
cout << r << " " << g << endl;
img.setColor(j, i, ofShortColor(r, g, 0));
iptr+=channels;
}
}
}
else if(cuttype==1) { // not square picture
int nrows = 64;
int subdivs = 4;
int s = int((n/channels)/nrows);
cout << "img size: " << s << " by " << nrows << endl;
img.allocate(s, nrows, OF_IMAGE_COLOR);
int iptr = 0; // which audio sample are we on?
for(int i = 0;i<nrows;i++)
{
for(int j = 0;j<s;j++)
{
float r = ofMap(rawSamples[iptr], -1., 1., 0., 65535.); // left side
float g = ofMap(rawSamples[iptr+1], -1., 1., 0., 65535.); // right side
float b = (j%(s/subdivs)==0)*65535.;
cout << r << " " << g << endl;
img.setColor(j, i, ofShortColor(r, g, b));
iptr+=channels;
}
}
}
img.reloadTexture();
img.saveImage("test.png");
}
if(key=='l') {
themess = "picture to sound";
// generate sound from picture
cout << "picture to sound" << endl;
ofShortImage foo;
foo.loadImage("test.png");
vector<int32_t> theSamps;
cout << "size: " << foo.getWidth() << " by " << foo.getHeight() << endl;
float s = foo.getWidth();
float t = foo.getHeight();
for(int i = 0;i<t;i++)
{
for(int j = 0;j<s;j++)
{
ofShortColor c = foo.getColor(j, i);
float rs = ofMap(c.r, 0., 65535., -1., 1.);
float gs = ofMap(c.g, 0., 65535., -1., 1.);
int32_t r =int(rs*536870912.); // 2^29 (wtf?)
int32_t g =int(gs*536870912.); // 2^29 (wtf?)
cout << "sample: " << c.r << " " << c.g << endl;
theSamps.push_back(r);
theSamps.push_back(g);
}
}
// try dumping the original sound
/* const vector<float>& rawSamples = audio.getRawSamples();
int channels = audio.getChannels();
int n = rawSamples.size();
for(int i = 0;i<n;i++)
{
int32_t s =int(rawSamples[i]*500000000.);
cout << rawSamples[i] << " " <<s << endl;
theSamps.push_back(s);
}*/
// insert file writing code to dump theSamps to disk here:
AIFF_Ref ref ;
string p = ofToDataPath("foo.aiff", true);
cout << p << endl;
ref = AIFF_OpenFile(p.c_str(), F_WRONLY) ;
if( ref )
{
puts("File opened successfully.");
AIFF_SetAudioFormat(ref, 2, 44100., 16);
AIFF_StartWritingSamples(ref);
int32_t* v = theSamps.data();
AIFF_WriteSamples32Bit(ref, v, theSamps.size());
AIFF_EndWritingSamples(ref);
AIFF_CloseFile(ref);
puts("Closed file.");
}
}
}