void NavigatorScene::mouseMoveEvent(QGraphicsSceneMouseEvent* ev)
{
if(ev->buttons() & (Qt::LeftButton | Qt::RightButton))
{
if(ev->modifiers() & Qt::ShiftModifier)
emit updatePlayhead(ev->scenePos().x());
emit centerCanvas(ev->scenePos().x(), ev->scenePos().y());
}
}
const float* MovedSound::readSample()
{
bool playhead_was_negative = playhead < getStartTime();
cursor_position_in_buffer ++;
updatePlayhead();
if (playhead >= getStartTime() && playhead_was_negative)
{
fillBuffer();
}
int channels = (sound != NULL ? sound->getChannels() : MAX_CHANNELS);
if (buffer_actual_size > 0)
{
if (cursor_position_in_buffer >= buffer_allocated_size)
{
fillBuffer();
}
for (int i = 0; i < channels; i++)
{
read_buffer[i] = buffer[i][cursor_position_in_buffer];
}
}
else
{
for (int i = 0; i < channels; i++)
{
read_buffer[i] = 0.f;
}
}
return read_buffer;
}
void VorbisFileReader::rewind(double position)
{
if (position < 0 || position >= length)
{
buffer_start_time = position;
buffer_actual_size = 0;
cursor_position_in_buffer = 0;
}
else
{
int ret = ov_time_seek(&vf, position);
if (ret < 0)
{
throwVorbisError(ret, L"rewind");
}
if (ret == 0)
{
fillBuffer();
}
}
updatePlayhead();
}
VorbisFileReader::VorbisFileReader(wstring file_name, int buffer_size_request) :
buffer_size_request(buffer_size_request)
#else
VorbisFileReader::VorbisFileReader(string file_name, int buffer_size_request) :
buffer_size_request(buffer_size_request)
#endif
{
#ifdef __MINGW32__
file = _wfopen(file_name.c_str(), L"rb");
#else
file = fopen(file_name.c_str(), "rb");
#endif
if (file == NULL)
{
throwError(etCantOpen, L"constructor (1)");
}
// Opening vorbis file
int ret = ov_open_callbacks(file, &vf, NULL, 0, OV_CALLBACKS_NOCLOSE);
if (ret < 0)
{
throwVorbisError(ret, L"constructor (2)");
}
if (ret == 0)
{
// Reading the comments
char **ptr = ov_comment(&vf, -1)->user_comments;
vorbis_info *vi = ov_info(&vf, -1);
while (*ptr)
{
comments.push_back(string(*ptr));
++ptr;
}
bitsPerSecond = ov_bitrate(&vf, -1);
channels = vi->channels;
rate = vi->rate;
read_buffer = new float[channels];
vendor = string(ov_comment(&vf,-1)->vendor);
length = ov_time_total(&vf, -1);
playhead = 0;
fillBuffer();
}
}
VorbisFileReader::~VorbisFileReader()
{
delete [] read_buffer;
ov_clear(&vf);
if (file != NULL) fclose(file);
}
const float* VorbisFileReader::readSample()
{
bool playhead_was_negative = playhead < 0;
cursor_position_in_buffer ++;
updatePlayhead();
if (playhead >= 0 && playhead_was_negative) // if we have just stepped into the sound
{
fillBuffer();
}
if (buffer_actual_size > 0) // if the buffer isn't empty
{
if (cursor_position_in_buffer >= buffer_actual_size) // if the buffer has run away
{
fillBuffer();
}
for (int i = 0; i < channels; i++) // filling the read buffer with the sound buffer sample at position
{
read_buffer[i] = buffer[i][cursor_position_in_buffer];
}
}
else
{
for (int i = 0; i < channels; i++) // filling the read buffer with zeroes
{
read_buffer[i] = 0.f;
}
}
return read_buffer;
}
void NavigatorScene::mousePressEvent(QGraphicsSceneMouseEvent* ev)
{
if(ev->modifiers() & Qt::ShiftModifier)
emit updatePlayhead(ev->scenePos().x());
emit centerCanvas(ev->scenePos().x(), ev->scenePos().y());
}
