void Audio_Stream::seekToTime(unsigned newSeekTime)
{
unsigned duration = durationInSeconds();
if (!(duration > 0)) {
return;
}
close();
setState(SEEKING);
HTTP_Stream_Position position;
double offset = (double)newSeekTime / (double)duration;
position.start = m_dataOffset + offset * (contentLength() - m_dataOffset);
position.end = contentLength();
m_seekTime = newSeekTime;
if (m_httpStream->open(position)) {
AS_TRACE("%s: HTTP stream opened, buffering...\n", __PRETTY_FUNCTION__);
m_httpStreamRunning = true;
} else {
AS_TRACE("%s: failed to open the HTTP stream\n", __PRETTY_FUNCTION__);
setState(FAILED);
}
}
void Audio_Stream::seekToTime(unsigned newSeekTime)
{
unsigned duration = durationInSeconds();
if (!(duration > 0)) {
return;
}
if (state() == SEEKING) {
return;
} else {
setState(SEEKING);
}
m_seekTime = newSeekTime;
double offset = (double)newSeekTime / (double)duration;
UInt64 seekByteOffset = m_dataOffset + offset * (contentLength() - m_dataOffset);
HTTP_Stream_Position position;
position.start = seekByteOffset;
position.end = contentLength();
double packetDuration = m_srcFormat.mFramesPerPacket / m_srcFormat.mSampleRate;
if (packetDuration > 0 && bitrate() > 0) {
UInt32 ioFlags = 0;
SInt64 packetAlignedByteOffset;
SInt64 seekPacket = floor((double)newSeekTime / packetDuration);
OSStatus err = AudioFileStreamSeek(m_audioFileStream, seekPacket, &packetAlignedByteOffset, &ioFlags);
if (!err) {
position.start = packetAlignedByteOffset + m_dataOffset;
}
}
close();
AS_TRACE("Seeking position %llu\n", position.start);
if (m_httpStream->open(position)) {
AS_TRACE("%s: HTTP stream opened, buffering...\n", __PRETTY_FUNCTION__);
m_httpStreamRunning = true;
} else {
AS_TRACE("%s: failed to open the fHTTP stream\n", __PRETTY_FUNCTION__);
setState(FAILED);
}
}