> does this voip thing actually work? i've never used it neither have i seen > talk about it so yes, loosing this would be an option to me if we can get > rid of network problems like "can't see your game", "can't see what i'm > writing", "crap game! lets search another one" (ok i'm exagurating but i > read dialogues like that a lot on #glob2. almost no game of more than 2 > players suceeds if no developer is around.) on the other hand: who says we > shouldn't punch hole for voip? i consider voip a non vital feature and if > the rest works and voip works for 5/8 players and the other 3 get a message > (open port x, y, ...) we have a perfect architecture.
Yes voip works fine, much better than Skype in fact. I've implemented it using libspeex. The architecture is clean. If windows maintainers do not implement the required code for sound input it's not my fault (I've even sent some code to do it from another of my project to the ml (reattached in this mail)). I would be very upset if it is removed. Steph -- http://stephane.magnenat.net
/* Osqoop, an open source software oscilloscope. Copyright (C) 2006 Stephane Magnenat <stephane at magnenat dot net> Laboratory of Digital Systems http://www.eig.ch/labsynum.htm Engineering School of Geneva http://www.eig.ch See AUTHORS for more details about other contributors. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ #include <QtCore> #include <QDialog> #include <QListWidget> #include <QVBoxLayout> #include <QLabel> #include <QMessageBox> #include "SoundCard.h" //! Dialog box for choosing sound input class SoundInputsDialog : public QDialog { public: QListWidget *soundInputsList; //!< the list holding available sound inputs //! Creates the widgets, especially the list of available data sources, which is filled from the dataSources parameter SoundInputsDialog(const QStringList &items) { QVBoxLayout *layout = new QVBoxLayout(this); layout->addWidget(new QLabel(tr("Please choose a sound input"))); soundInputsList = new QListWidget(); soundInputsList->addItems(items); layout->addWidget(soundInputsList); connect(soundInputsList, SIGNAL(itemDoubleClicked(QListWidgetItem *)), SLOT(accept())); } }; // Unix specific #ifdef Q_OS_UNIX #include <fcntl.h> #include <sys/ioctl.h> #include <sys/soundcard.h> #include <unistd.h> class SoundCardSystemSpecificData { public: int dspDev; SoundCardSystemSpecificData() { dspDev = -1; } ~SoundCardSystemSpecificData() { if (dspDev != -1) close(dspDev); } bool openDevice() { // OSS, Open Sound System int rate = 44100; int channels = 2; int format = AFMT_S16_NE; dspDev = open("/dev/dsp", O_RDONLY); if (dspDev == -1) return false; ioctl(dspDev, SNDCTL_DSP_SPEED , &rate); ioctl(dspDev, SNDCTL_DSP_CHANNELS , &channels); ioctl(dspDev, SOUND_PCM_READ_RATE , &rate); ioctl(dspDev, SNDCTL_DSP_SETFMT , &format); return true; } void getRawData(std::valarray<std::valarray<signed short> > *data) { // Read buffer size_t bufferSize = 512 * 2; signed short buffer[bufferSize]; read(dspDev, buffer, bufferSize * 2); // Deinterlace buffer for (size_t sample = 0; sample < 512; sample++) for (size_t channel = 0; channel < 2; channel++) (*data)[channel][sample] = buffer[sample * 2 + channel]; } }; #endif // Q_OS_UNIX // Win32 specific #ifdef Q_OS_WIN32 #include <windows.h> // See: //http://windowssdk.msdn.microsoft.com/en-us/library/ms709420.aspx //http://windowssdk.msdn.microsoft.com/en-us/library/ms713739.aspx //http://windowssdk.msdn.microsoft.com/en-us/library/ms713724.aspx //http://windowssdk.msdn.microsoft.com/en-us/library/ms713736.aspx //http://windowssdk.msdn.microsoft.com/en-us/library/ms713733.aspx //http://windowssdk.msdn.microsoft.com/en-us/library/ms713741.aspx //http://windowssdk.msdn.microsoft.com/en-us/library/ms713732.aspx //http://windowssdk.msdn.microsoft.com/en-us/library/ms713735.aspx //http://www.codeguru.com/forum/archive/index.php/t-264694.html //http://www.borg.com/~jglatt/tech/lowaud.htm class SoundCardSystemSpecificData { public: HWAVEIN waveIn; HANDLE event; enum { bufferDataSize = 512 * 2, bufferCount = 4 }; signed short buffersData[bufferCount][bufferDataSize]; WAVEHDR buffers[bufferCount]; unsigned bufferPos; SoundCardSystemSpecificData() { waveIn = 0; event = CreateEvent(NULL, FALSE, FALSE, NULL); } ~SoundCardSystemSpecificData() { if (waveIn != 0) { // Stop acquisition waveInReset(waveIn); // Destroy buffers for (unsigned i = 0; i < bufferCount; i++) waveInUnprepareHeader(waveIn, &buffers[i], sizeof(WAVEHDR)); // Close device waveInClose(waveIn); } CloseHandle(event); } bool openDevice() { // Setup parameters WAVEFORMATEX waveFormat; waveFormat.wFormatTag = WAVE_FORMAT_PCM; waveFormat.nChannels = 2; waveFormat.nSamplesPerSec = 44100; waveFormat.wBitsPerSample = 16; waveFormat.nBlockAlign = (waveFormat.nChannels * waveFormat.wBitsPerSample) / 8; waveFormat.nAvgBytesPerSec = waveFormat.nSamplesPerSec * waveFormat.nBlockAlign; waveFormat.cbSize = 0; // Get the number of Digital Audio In devices in this computer unsigned long devCount = waveInGetNumDevs(); QStringList inputList; for (unsigned long i = 0; i < devCount; i++) { WAVEINCAPS wic; if (!waveInGetDevCaps(i, &wic, sizeof(WAVEINCAPS))) inputList << QString((const char *)wic.szPname); } if (inputList.empty()) return false; // If required, display a dialog with inputs names unsigned sourceId; if (inputList.size() > 1) { SoundInputsDialog soundInputsDialog(inputList); int ret = soundInputsDialog.exec(); if (ret == QDialog::Rejected) return false; sourceId = soundInputsDialog.soundInputsList->currentRow(); } else sourceId = 0; // Open device MMRESULT openResult = waveInOpen(&waveIn, sourceId, &waveFormat, (DWORD)event, 0, CALLBACK_EVENT); if (openResult != MMSYSERR_NOERROR) return false; // Prepare and add buffer for (unsigned i = 0; i < bufferCount; i++) { buffers[i].dwBufferLength = bufferDataSize * sizeof(signed short); buffers[i].lpData = (char *)buffersData[i]; buffers[i].dwFlags = 0; if (waveInPrepareHeader(waveIn, &buffers[i], sizeof(WAVEHDR)) != MMSYSERR_NOERROR) return false; if (waveInAddBuffer(waveIn, &buffers[i], sizeof(WAVEHDR)) != MMSYSERR_NOERROR) return false; } bufferPos = 0; // Start acquisition if (waveInStart(waveIn) != MMSYSERR_NOERROR) return false; return true; } void getRawData(std::valarray<std::valarray<signed short> > *data) { // Wait for buffer ready WaitForSingleObject(event, INFINITE); // Deinterlace buffer for (size_t sample = 0; sample < 512; sample++) for (size_t channel = 0; channel < 2; channel++) (*data)[channel][sample] = buffersData[bufferPos][sample * 2 + channel]; // Put back buffer waveInAddBuffer(waveIn, &buffers[bufferPos], sizeof(WAVEHDR)); bufferPos = (bufferPos + 1) % bufferCount; } }; #endif // Q_OS_WIN32 QString SoundCardDataSourceDescription::name() const { return "Sound input capture"; } QString SoundCardDataSourceDescription::description() const { return "Sound input capture through the soundcard"; } DataSource *SoundCardDataSourceDescription::create() const { return new SoundCardDataSource(this); } SoundCardDataSource::SoundCardDataSource(const DataSourceDescription *description) : DataSource(description) { privateData = new SoundCardSystemSpecificData; } SoundCardDataSource::~SoundCardDataSource() { delete privateData; } bool SoundCardDataSource::init(void) { return privateData->openDevice(); } unsigned SoundCardDataSource::getRawData(std::valarray<std::valarray<signed short> > *data) { privateData->getRawData(data); return 0; } unsigned SoundCardDataSource::inputCount() const { return 2; } unsigned SoundCardDataSource::samplingRate() const { return 44100; } unsigned SoundCardDataSource::unitPerVoltCount() const { return 10000; } Q_EXPORT_PLUGIN(SoundCardDataSourceDescription)
/* Osqoop, an open source software oscilloscope. Copyright (C) 2006 Stephane Magnenat <stephane at magnenat dot net> Laboratory of Digital Systems http://www.eig.ch/labsynum.htm Engineering School of Geneva http://www.eig.ch See AUTHORS for more details about other contributors. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ #ifndef __SOUND_CARD_H #define __SOUND_CARD_H #include <DataSource.h> class SoundCardSystemSpecificData; //! Description of SoundCard, a sound input capture source class SoundCardDataSourceDescription : public QObject, public DataSourceDescription { Q_OBJECT Q_INTERFACES(DataSourceDescription) public: virtual QString name() const; virtual QString description() const; virtual DataSource *create() const; }; //! SoundCard, a sound input capture source class SoundCardDataSource : public DataSource { private: friend class SoundCardDataSourceDescription; SoundCardDataSource(const DataSourceDescription *description); SoundCardSystemSpecificData *privateData; public: virtual ~SoundCardDataSource(); virtual bool init(void); virtual unsigned getRawData(std::valarray<std::valarray<signed short> > *data); virtual unsigned inputCount() const; virtual unsigned samplingRate() const; virtual unsigned unitPerVoltCount() const; }; #endif
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