void TFile::SetLength(size_t szNewLength, bool bRetainOldOffset)
{
DEBUG_VERIFY_ALLOCATION;
DEBUG_VERIFY(IsOpen());
if(!(m_flOpenFlags & FOF_RESIZE))
INITIATE_FAILURE;
if(bRetainOldOffset)
{
size_t szCurOffset = InternalTell();
SetFilePointer(m_hFile, szNewLength, NULL, FILE_BEGIN); // ... (no error check-up)
if(!SetEndOfFile(m_hFile))
throw 1;
InternalSeek(szCurOffset);
}
else
{
if(!(m_flOpenFlags & FOF_SEEK))
throw 1;
SetFilePointer(m_hFile, szNewLength, NULL, FILE_BEGIN); // ... (no error check-up)
if(!SetEndOfFile(m_hFile))
throw 1;
}
m_FilePos.m_szLength = szNewLength;
}
void TFile::Seek(int iOffset, TFileSeekMode Mode)
{
DEBUG_VERIFY_ALLOCATION;
DEBUG_VERIFY(IsOpen());
if(!(m_flOpenFlags & FOF_SEEK))
INITIATE_FAILURE;
InternalSeek(iOffset, Mode);
}
bool BaseInFileStream::SignalSeek(double &absoluteTimestamp) {
//1. Seek to the correct point
if (!InternalSeek(absoluteTimestamp)) {
FATAL("Unable to seek to %.02f", absoluteTimestamp);
return false;
}
//2. If the stream is active, re-initiate the feed reaction
if (!_paused)
ReadyForSend();
//3. Done
return true;
}
bool BaseInFileStream::SignalSeek(double &absoluteTimestamp) {
//1. Seek to the correct point
if (!InternalSeek(absoluteTimestamp)) {
FATAL("Unable to seek to %.02f", absoluteTimestamp);
return false;
}
//2. If the stream is active, re-initiate the feed reaction
if (_streamingState == FILE_STREAMING_STATE_FINISHED) {
_streamingState = FILE_STREAMING_STATE_PLAYING;
ReadyForSend();
}
//3. Done
return true;
}
bool BaseInFileStream::SignalPlay(double &absoluteTimestamp, double &length) {
//0. fix absoluteTimestamp and length
absoluteTimestamp = absoluteTimestamp < 0 ? 0 : absoluteTimestamp;
//TODO: implement the limit playback
//1. Seek to the correct point
if (!InternalSeek(absoluteTimestamp)) {
FATAL("Unable to seek to %.02f", absoluteTimestamp);
return false;
}
//2. Put the stream in active mode
_paused = false;
//3. Start the feed reaction
ReadyForSend();
//4. Done
return true;
}
bool BaseInFileStream::SignalPlay(double &absoluteTimestamp, double &length) {
INFO("signal play");
//0. fix absoluteTimestamp and length
absoluteTimestamp = absoluteTimestamp < 0 ? 0 : absoluteTimestamp;
_playLimit = length;
FINEST("absoluteTimestamp: %.2f; _playLimit: %.2f", absoluteTimestamp, _playLimit);
//TODO: implement the limit playback
//1. Seek to the correct point
if (!InternalSeek(absoluteTimestamp)) {
FATAL("Unable to seek to %.02f", absoluteTimestamp);
return false;
}
//2. Put the stream in active mode
_streamingState = FILE_STREAMING_STATE_PLAYING;
//3. Start the feed reaction
ReadyForSend();
//4. Done
return true;
}