Hi thanks for all participants in this audio thread. (I hope this post is auto-connected to the thread with this name - I seldom use mailinglists. If not, sorry for that)
This weekend, I was also woundering about the way the exit/stop/close is donw or if it can work. But I found another issue in fhandler_dsp.cc: "bits / 8" should be "((bits+7) / 8)" , see below. as described in the german wikipedia-article (not in engl. one) https://de.wikipedia.org/wiki/RIFF_WAVE#.E2.80.9EFormat.E2.80.9C-Abschnitt this makes even more sence: then cygwin can support 1..16 bit (which is allowed for riff/wave/pcm), not only 8 and 16 bit. Alexander -------------------------- void fhandler_dev_dsp::Audio::fillFormat (WAVEFORMATEX * format, int rate, int bits, int channels) { memset (format, 0, sizeof (*format)); format->wFormatTag = WAVE_FORMAT_PCM; format->wBitsPerSample = bits; format->nChannels = channels; format->nSamplesPerSec = rate; format->nAvgBytesPerSec = format->nSamplesPerSec * format->nChannels * ((bits+7) / 8); format->nBlockAlign = format->nChannels * ((bits+7) / 8); } // calculate a good block size unsigned fhandler_dev_dsp::Audio::blockSize (int rate, int bits, int channels) { unsigned blockSize; blockSize = (((bits+7) / 8) * channels * rate) / 8; // approx 125ms per block // round up to multiple of 64 blockSize += 0x3f; blockSize &= ~0x3f; return blockSize; } -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
