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/*************************************************************************** |
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* * |
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* LinuxSampler - modular, streaming capable sampler * |
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* * |
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* Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck * |
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* Copyright (C) 2005 - 2008 Christian Schoenebeck * |
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* * |
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* This program is free software; you can redistribute it and/or modify * |
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* it under the terms of the GNU General Public License as published by * |
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* the Free Software Foundation; either version 2 of the License, or * |
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* (at your option) any later version. * |
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* * |
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* This program is distributed in the hope that it will be useful, * |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of * |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
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* GNU General Public License for more details. * |
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* * |
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* You should have received a copy of the GNU General Public License * |
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* along with this program; if not, write to the Free Software * |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, * |
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* MA 02111-1307 USA * |
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***************************************************************************/ |
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|
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#include "AudioOutputDeviceAsio.h" |
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#include "AudioOutputDeviceFactory.h" |
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|
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#define kMaxInputChannels 32 |
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#define kMaxOutputChannels 32 |
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#define ASIO_MAX_DEVICE_INFO 32 |
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|
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#define NUM_STANDARDSAMPLINGRATES 3 // 11.025, 22.05, 44.1 |
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#define NUM_CUSTOMSAMPLINGRATES 9 // must be the same number of elements as in the array below |
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#define MAX_NUMSAMPLINGRATES (NUM_STANDARDSAMPLINGRATES + NUM_CUSTOMSAMPLINGRATES) |
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|
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// internal data storage |
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struct DriverInfo { |
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// ASIOInit() |
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ASIODriverInfo driverInfo; |
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|
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// ASIOGetChannels() |
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long numInputChannels; |
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long numOutputChannels; |
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|
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// ASIOGetBufferSize() |
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long minBufSize; |
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long maxBufSize; |
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long preferredBufSize; |
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long bufGranularity; |
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long chosenBufSize; |
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|
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// ASIOGetSampleRate() |
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ASIOSampleRate sampleRate; |
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std::vector<int> sampleRates; |
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|
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// ASIOOutputReady() |
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bool ASIOOutputReadySupported; |
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|
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// ASIOGetLatencies () |
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long inputLatency; |
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long outputLatency; |
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|
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// ASIOCreateBuffers () |
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long numInputBuffers; // becomes number of actual created input buffers |
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long numOutputBuffers; // becomes number of actual created output buffers |
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ASIOBufferInfo bufferInfos[kMaxInputChannels + kMaxOutputChannels]; |
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|
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// ASIOGetChannelInfo() |
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ASIOChannelInfo channelInfos[kMaxInputChannels + kMaxOutputChannels]; |
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// The above two arrays share the same indexing, as the data in them are linked together |
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|
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// Information from ASIOGetSamplePosition() |
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// data is converted to double floats for easier use, however 64 bit integer can be used, too |
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double nanoSeconds; |
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double samples; |
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double tcSamples; // time code samples |
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|
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// bufferSwitchTimeInfo() |
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ASIOTime tInfo; // time info state |
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unsigned long sysRefTime; // system reference time, when bufferSwitch() was called |
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|
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// Signal the end of processing in this example |
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bool stopped; |
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}; |
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|
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extern AsioDrivers* asioDrivers; |
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extern bool loadAsioDriver(char* name); |
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|
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static DriverInfo asioDriverInfo = { { 0 }, 0 }; |
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|
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static bool asioDriverOpened = false; |
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static bool AudioOutputDeviceAsioInstantiated = false; |
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static String currentAsioDriverName; |
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static std::vector<String> asioDriverList; |
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static bool asioDriverListLoaded = false; |
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|
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namespace LinuxSampler { |
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|
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// callback prototypes |
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|
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ASIOCallbacks asioCallbacks; |
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AudioOutputDeviceAsio* GlobalAudioOutputDeviceAsioThisPtr; |
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|
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template<int bitres> |
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static void floatToASIOSTInt32LSBXX(float* in, void* dest, int numSamples) { |
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double pos_max_value = (1 << bitres) -1.0; |
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double neg_max_value = -pos_max_value; |
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int32_t* out = (int32_t*)dest; |
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for (int i = 0; i < numSamples ; i++) { |
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double sample_point = in[i] * pos_max_value; |
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if (sample_point < neg_max_value) sample_point = neg_max_value; |
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if (sample_point > pos_max_value) sample_point = pos_max_value; |
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out[i] = (int16_t)sample_point; |
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} |
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} |
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|
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static void floatToASIOSTInt16LSB(float* in, void* dest, int numSamples) { |
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int16_t* out = (int16_t*)dest; |
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for (int i = 0; i < numSamples ; i++) { |
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float sample_point = in[i] * 32768.0f; |
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if (sample_point < -32768.0) sample_point = -32768.0; |
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if (sample_point > 32767.0) sample_point = 32767.0; |
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out[i] = (int16_t)sample_point; |
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} |
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} |
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|
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static void floatToASIOSTInt32LSB(float* in, void* dest, int numSamples) { |
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int32_t* out = (int32_t*)dest; |
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for (int i = 0; i < numSamples ; i++) { |
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double sample_point = in[i] * 2147483648.0; |
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if (sample_point < - 2147483648.0) sample_point = -2147483648.0; |
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if (sample_point > 2147483647.0) sample_point = 2147483647.0; |
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out[i] = (int32_t)(sample_point); |
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} |
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} |
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|
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std::vector<String> getAsioDriverNames(); |
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|
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static bool ASIO_loadAsioDriver(const char* name) { |
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dmsg(2,("ASIO_loadAsioDriver: trying to load '%s'\n", name)); |
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#ifdef WINDOWS |
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CoInitialize(0); |
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#endif |
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return loadAsioDriver(const_cast<char*>(name)); |
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} |
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|
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int ASIO_OpenAndQueryDeviceInfo(String driverName, DriverInfo* driverInfo) { |
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ASIOSampleRate possibleSampleRates[] = |
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{ 8000.0, 9600.0, 11025.0, 12000.0, 16000.0, 22050.0, 24000.0, |
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32000.0, 44100.0, 48000.0, 88200.0, 96000.0 }; |
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|
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ASIOError asioError; |
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|
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// Call this function in order to fill the internal vector |
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// containing the list of ASIO cards. |
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|
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// Since the reading of the list is performed only one time, |
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// subsequent calls to this function will be automatically |
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// ignored. |
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|
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// Calling getAsioDriverNames() is needed in the case of a |
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// LinuxSampler client application first creating an ASIO device, |
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// which calls ASIO_OpenAndQueryDeviceInfo(), and afterwards |
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// retrieve the list of available ASIO cards, since |
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// getAsioDriverNames() unloads the current driver and loads the |
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// driver 'dummy' this would cause the audio stopping and forcing |
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// the create the audio output device again. |
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getAsioDriverNames(); |
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|
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dmsg(2,("ASIO_OpenAndQueryDeviceInfo driverName='%s' current='%s'\n", |
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driverName.c_str(), currentAsioDriverName.c_str())); |
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if (driverName == currentAsioDriverName) { |
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// if the given ASIO driver name == current ASIO driver name |
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// and the driver was already opened then do nothing |
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if (asioDriverOpened) { |
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dmsg(2,("asioDriver already opened, doing nothing\n")); |
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return 0; |
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} |
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} |
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else { |
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dmsg(2,("driverName != currentAsioDriverName, new asio driver specified, opening device...\n")); |
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// if a new ASIO driver name was specified then first check if |
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// we need to close the old one |
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if (asioDriverOpened) { |
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dmsg(2,("different asioDriver already opened, closing old one\n")); |
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asioDriverOpened = false; |
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ASIOExit(); // close the old ASIO driver |
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} |
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} |
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currentAsioDriverName = driverName; |
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|
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memset(&driverInfo->driverInfo, 0, sizeof(ASIODriverInfo)); |
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driverInfo->driverInfo.asioVersion = 1; |
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driverInfo->driverInfo.sysRef = NULL; |
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|
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// MUST BE CHECKED : to force fragments loading on Mac |
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// ASIO_loadAsioDriver("dummy"); |
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|
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dmsg(2,("Before ASIO_loadAsioDriver('%s')\n", driverName.c_str())); |
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if (!ASIO_loadAsioDriver(driverName.c_str())) { |
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dmsg(2,("ASIO_OpenAndQueryDeviceInfo could not loadAsioDriver %s\n", driverName.c_str())); |
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return -1; |
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} |
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dmsg(2,("Before ASIOInit()\n")); |
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if ((asioError = ASIOInit(&driverInfo->driverInfo)) != ASE_OK) { |
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dmsg(2,("ASIO_OpenAndQueryDeviceInfo: ASIOInit returned %d for %s\n", |
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int(asioError), driverName.c_str())); |
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return asioError; |
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} |
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dmsg(2,("Before ASIOGetChannels()\n")); |
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if ((asioError = ASIOGetChannels(&driverInfo->numInputChannels, |
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&driverInfo->numOutputChannels)) != ASE_OK) { |
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dmsg(1,("ASIO_OpenAndQueryDeviceInfo could not ASIOGetChannels for %s: %d\n", |
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driverName.c_str(), int(asioError))); |
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return asioError; |
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} |
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|
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dmsg(2,("Before ASIOGetBufferSize()\n")); |
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if ((asioError = ASIOGetBufferSize(&driverInfo->minBufSize, |
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&driverInfo->maxBufSize, |
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&driverInfo->preferredBufSize, |
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&driverInfo->bufGranularity)) != ASE_OK) { |
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dmsg(1,("ASIO_OpenAndQueryDeviceInfo could not ASIOGetBufferSize for %s: %d\n", |
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driverName.c_str(), int(asioError))); |
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return asioError; |
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} |
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|
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dmsg(2,("ASIO_OpenAndQueryDeviceInfo: InputChannels = %ld\n", driverInfo->numInputChannels)); |
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dmsg(2,("ASIO_OpenAndQueryDeviceInfo: OutputChannels = %ld\n", driverInfo->numOutputChannels)); |
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|
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// Loop through the possible sampling rates and check each to see |
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// if the device supports it. |
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driverInfo->sampleRates.clear(); |
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for (int index = 0; index < MAX_NUMSAMPLINGRATES; index++) { |
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if (ASIOCanSampleRate(possibleSampleRates[index]) != ASE_NoClock) { |
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dmsg(2,("ASIOCanSampleRate: possible sample rate = %ld\n", |
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(long)possibleSampleRates[index])); |
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driverInfo->sampleRates.push_back((int)possibleSampleRates[index]); |
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} |
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} |
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|
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// get the channel infos for each output channel (including sample format) |
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for (int i = 0; i < driverInfo->numOutputChannels; i++) { |
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driverInfo->channelInfos[i].channel = i; |
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driverInfo->channelInfos[i].isInput = ASIOFalse; |
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ASIOGetChannelInfo(&driverInfo->channelInfos[i]); |
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dmsg(2,("channelInfos[%d].type (sampleformat) = %d\n", |
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i, int(driverInfo->channelInfos[i].type))); |
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} |
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|
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dmsg(2,("ASIO_OpenAndQueryDeviceInfo: driver opened.\n")); |
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asioDriverOpened = true; |
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return ASE_OK; |
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} |
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|
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|
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std::vector<String> getAsioDriverNames() { |
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char* names[ASIO_MAX_DEVICE_INFO]; |
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int numDrivers; |
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|
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if (asioDriverListLoaded) { |
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dmsg(2,("getAsioDriverNames: ASIO driver list already loaded, doing returning cached list.\n")); |
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return asioDriverList; |
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} |
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|
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// MUST BE CHECKED : to force fragments loading on Mac |
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ASIO_loadAsioDriver("dummy"); |
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|
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#if MAC |
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numDrivers = asioDrivers->getNumFragments(); |
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#elif WINDOWS |
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numDrivers = asioDrivers->asioGetNumDev(); |
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#endif |
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|
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for (int i = 0; i < ASIO_MAX_DEVICE_INFO; i++) { |
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names[i] = new char[32]; |
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memset(names[i], 0, 32); |
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} |
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|
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// Get names of all available ASIO drivers |
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asioDrivers->getDriverNames(names, ASIO_MAX_DEVICE_INFO); |
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dmsg(2,("getAsioDriverNames: numDrivers=%d\n", numDrivers)); |
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|
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for (int i = 0; i < numDrivers; i++) { |
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dmsg(2,("ASIO DRIVERLIST: i=%d name='%s'\n", i, names[i])); |
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|
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#if 1 |
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asioDriverList.push_back(names[i]); |
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#else |
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// FIXME: We currently try what is the best method to exclude |
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// not connected devices or not working drivers. The code |
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// below is for testing only, it tries to load each ASIO |
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// driver and if it gives an error it is not included in the |
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// list of available drivers (asioDriverList). |
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if (ASIO_loadAsioDriver(names[i])) { |
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ASIOError asioError; |
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if ((asioError = ASIOInit(&asioDriverInfo.driverInfo)) == ASE_OK) { |
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asioDriverList.push_back(names[i]); |
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} |
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else { |
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dmsg(2,("getDriverList: ASIOInit of driver %s gave Error %d! ignoring it.\n", |
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names[i], int(asioError))); |
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} |
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} |
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else { |
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dmsg(2,("getDriverList: load driver %s failed! ignoring it.\n", names[i])); |
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} |
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// FIXME: we need to check this ASIOExit is needed (gave a |
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// crash on a ASIO ADSP24(WDM) card so we commented it out) |
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// ASIOExit(); |
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#endif |
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//currentAsioDriverName = ""; |
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} |
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|
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for (int i = 0; i < ASIO_MAX_DEVICE_INFO; i++) { |
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delete[] names[i]; |
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} |
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|
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dmsg(2,("getAsioDriverNames: returing from function. asioDriverList.size()=%d\n", |
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int(asioDriverList.size()))); |
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asioDriverListLoaded = true; |
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return asioDriverList; |
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} |
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|
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// currently not unsed |
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unsigned long get_sys_reference_time() { |
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// get the system reference time |
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#if WINDOWS |
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return timeGetTime(); |
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#elif MAC |
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static const double twoRaisedTo32 = 4294967296.; |
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UnsignedWide ys; |
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Microseconds(&ys); |
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double r = ((double)ys.hi * twoRaisedTo32 + (double)ys.lo); |
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return (unsigned long)(r / 1000.); |
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#endif |
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} |
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|
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|
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//---------------------------------------------------------------------------------- |
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// conversion from 64 bit ASIOSample/ASIOTimeStamp to double float |
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#if NATIVE_INT64 |
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#define ASIO64toDouble(a) (a) |
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#else |
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const double twoRaisedTo32 = 4294967296.; |
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#define ASIO64toDouble(a) ((a).lo + (a).hi * twoRaisedTo32) |
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#endif |
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|
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|
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ASIOTime* AudioOutputDeviceAsio::bufferSwitchTimeInfo(ASIOTime *timeInfo, long index, |
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ASIOBool processNow) { |
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static long processedSamples = 0; |
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// store the timeInfo for later use |
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asioDriverInfo.tInfo = *timeInfo; |
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|
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// get the time stamp of the buffer, not necessary if no |
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// synchronization to other media is required |
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if (timeInfo->timeInfo.flags & kSystemTimeValid) |
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asioDriverInfo.nanoSeconds = ASIO64toDouble(timeInfo->timeInfo.systemTime); |
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else |
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asioDriverInfo.nanoSeconds = 0; |
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|
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if (timeInfo->timeInfo.flags & kSamplePositionValid) |
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asioDriverInfo.samples = ASIO64toDouble(timeInfo->timeInfo.samplePosition); |
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else |
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asioDriverInfo.samples = 0; |
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|
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if (timeInfo->timeCode.flags & kTcValid) |
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asioDriverInfo.tcSamples = ASIO64toDouble(timeInfo->timeCode.timeCodeSamples); |
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else |
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asioDriverInfo.tcSamples = 0; |
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|
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// TODO: ignore for now. get the system reference time |
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// asioDriverInfo.sysRefTime = get_sys_reference_time(); |
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|
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// buffer size in samples |
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long buffSize = asioDriverInfo.chosenBufSize; |
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|
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// tell LinuxSampler to render a fragment of buffSize samples |
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GlobalAudioOutputDeviceAsioThisPtr->RenderAudio(buffSize); |
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|
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// now write and convert the samples to the ASIO buffer |
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for (int i = 0; i < asioDriverInfo.numOutputBuffers; i++) |
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{ |
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// do processing for the outputs only |
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switch (asioDriverInfo.channelInfos[i].type) |
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{ |
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case ASIOSTInt16LSB: |
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floatToASIOSTInt16LSB(GlobalAudioOutputDeviceAsioThisPtr->Channels[i]->Buffer(), |
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(int16_t*)asioDriverInfo.bufferInfos[i].buffers[index], buffSize); |
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break; |
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case ASIOSTInt24LSB: // used for 20 bits as well |
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memset (asioDriverInfo.bufferInfos[i].buffers[index], 0, buffSize * 3); |
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break; |
394 |
case ASIOSTInt32LSB: |
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floatToASIOSTInt32LSB(GlobalAudioOutputDeviceAsioThisPtr->Channels[i]->Buffer(), |
396 |
(int32_t*)asioDriverInfo.bufferInfos[i].buffers[index], buffSize); |
397 |
break; |
398 |
case ASIOSTFloat32LSB: // IEEE 754 32 bit float, as found on Intel x86 architecture |
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throw AudioOutputException("ASIO Error: ASIOSTFloat32LSB not yet supported! report to LinuxSampler developers."); |
400 |
break; |
401 |
case ASIOSTFloat64LSB: // IEEE 754 64 bit double float, as found on Intel x86 architecture |
402 |
throw AudioOutputException("ASIO Error: ASIOSTFloat64LSB not yet supported! report to LinuxSampler developers."); |
403 |
break; |
404 |
|
405 |
// These are used for 32 bit data buffer, with different |
406 |
// alignment of the data inside. 32 bit PCI bus systems |
407 |
// can more easily used with these. |
408 |
|
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case ASIOSTInt32LSB16: // 32 bit data with 16 bit alignment |
410 |
floatToASIOSTInt32LSBXX<16>(GlobalAudioOutputDeviceAsioThisPtr->Channels[i]->Buffer(), |
411 |
(int32_t*)asioDriverInfo.bufferInfos[i].buffers[index], |
412 |
buffSize); |
413 |
break; |
414 |
case ASIOSTInt32LSB18: // 32 bit data with 18 bit alignment |
415 |
floatToASIOSTInt32LSBXX<18>(GlobalAudioOutputDeviceAsioThisPtr->Channels[i]->Buffer(), |
416 |
(int32_t*)asioDriverInfo.bufferInfos[i].buffers[index], |
417 |
buffSize); |
418 |
break; |
419 |
case ASIOSTInt32LSB20: // 32 bit data with 20 bit alignment |
420 |
floatToASIOSTInt32LSBXX<20>(GlobalAudioOutputDeviceAsioThisPtr->Channels[i]->Buffer(), |
421 |
(int32_t*)asioDriverInfo.bufferInfos[i].buffers[index], |
422 |
buffSize); |
423 |
break; |
424 |
case ASIOSTInt32LSB24: // 32 bit data with 24 bit alignment |
425 |
floatToASIOSTInt32LSBXX<24>(GlobalAudioOutputDeviceAsioThisPtr->Channels[i]->Buffer(), |
426 |
(int32_t*)asioDriverInfo.bufferInfos[i].buffers[index], |
427 |
buffSize); |
428 |
break; |
429 |
case ASIOSTInt16MSB: |
430 |
throw AudioOutputException("ASIO Error: ASIOSTInt16MSB not yet supported! report to LinuxSampler developers."); |
431 |
break; |
432 |
case ASIOSTInt24MSB: // used for 20 bits as well |
433 |
throw AudioOutputException("ASIO Error: ASIOSTInt24MSB not yet supported! report to LinuxSampler developers."); |
434 |
break; |
435 |
case ASIOSTInt32MSB: |
436 |
throw AudioOutputException("ASIO Error: ASIOSTInt32MSB not yet supported! report to LinuxSampler developers."); |
437 |
break; |
438 |
case ASIOSTFloat32MSB: // IEEE 754 32 bit float, as found on bigendian architecture |
439 |
throw AudioOutputException("ASIO Error: ASIOSTFloat32MSB not yet supported! report to LinuxSampler developers."); |
440 |
break; |
441 |
case ASIOSTFloat64MSB: // IEEE 754 64 bit double float, as found on bigendian architecture |
442 |
throw AudioOutputException("ASIO Error: ASIOSTFloat64MSB not yet supported! report to LinuxSampler developers."); |
443 |
break; |
444 |
|
445 |
// These are used for 32 bit data buffer, with different |
446 |
// alignment of the data inside. 32 bit PCI bus systems |
447 |
// can more easily used with these. |
448 |
|
449 |
case ASIOSTInt32MSB16: // 32 bit data with 18 bit alignment |
450 |
throw AudioOutputException("ASIO Error: ASIOSTInt32MSB16 not yet supported! report to LinuxSampler developers."); |
451 |
break; |
452 |
case ASIOSTInt32MSB18: // 32 bit data with 18 bit alignment |
453 |
throw AudioOutputException("ASIO Error: ASIOSTInt32MSB18 not yet supported! report to LinuxSampler developers."); |
454 |
break; |
455 |
case ASIOSTInt32MSB20: // 32 bit data with 20 bit alignment |
456 |
throw AudioOutputException("ASIO Error: ASIOSTInt32MSB20 not yet supported! report to LinuxSampler developers."); |
457 |
break; |
458 |
case ASIOSTInt32MSB24: // 32 bit data with 24 bit alignment |
459 |
throw AudioOutputException("ASIO Error: ASIOSTInt32MSB24 not yet supported! report to LinuxSampler developers."); |
460 |
break; |
461 |
default: |
462 |
throw AudioOutputException("ASIO Error: unknown ASIOST sample format. report error."); |
463 |
break; |
464 |
} |
465 |
} |
466 |
|
467 |
// finally if the driver supports the ASIOOutputReady() |
468 |
// optimization, do it here, all data are in place |
469 |
if (asioDriverInfo.ASIOOutputReadySupported) |
470 |
ASIOOutputReady(); |
471 |
|
472 |
processedSamples += buffSize; |
473 |
return 0L; |
474 |
} |
475 |
|
476 |
void AudioOutputDeviceAsio::bufferSwitch(long index, ASIOBool processNow) { |
477 |
// The actual processing callback. |
478 |
|
479 |
// As this is a "back door" into the bufferSwitchTimeInfo, a |
480 |
// timeInfo needs to be created, though it will only set the |
481 |
// timeInfo.samplePosition and timeInfo.systemTime fields and the |
482 |
// according flags. |
483 |
ASIOTime timeInfo; |
484 |
memset(&timeInfo, 0, sizeof(timeInfo)); |
485 |
|
486 |
// Get the time stamp of the buffer. Not necessary if no |
487 |
// synchronization to other media is required. |
488 |
if (ASIOGetSamplePosition(&timeInfo.timeInfo.samplePosition, |
489 |
&timeInfo.timeInfo.systemTime) == ASE_OK) |
490 |
timeInfo.timeInfo.flags = kSystemTimeValid | kSamplePositionValid; |
491 |
|
492 |
bufferSwitchTimeInfo(&timeInfo, index, processNow); |
493 |
} |
494 |
|
495 |
void sampleRateChanged(ASIOSampleRate sRate) { |
496 |
// Do whatever you need to do if the sample rate changed. |
497 |
// Usually this only happens during external sync. |
498 |
// Audio processing is not stopped by the driver, actual sample rate |
499 |
// might not have even changed, maybe only the sample rate status of an |
500 |
// AES/EBU or S/PDIF digital input at the audio device. |
501 |
// You might have to update time/sample related conversion routines, etc. |
502 |
} |
503 |
|
504 |
long asioMessages(long selector, long value, void* message, double* opt) { |
505 |
dmsg(2,("asioMessages selector=%ld value=%ld\n", selector, value)); |
506 |
// currently the parameters "value", "message" and "opt" are not used. |
507 |
long ret = 0; |
508 |
switch (selector) |
509 |
{ |
510 |
case kAsioSelectorSupported: |
511 |
if (value == kAsioResetRequest || |
512 |
value == kAsioEngineVersion || |
513 |
value == kAsioResyncRequest || |
514 |
value == kAsioLatenciesChanged || |
515 |
// the following three were added for ASIO 2.0, we don't necessarily have to support them |
516 |
value == kAsioSupportsTimeInfo || |
517 |
value == kAsioSupportsTimeCode || |
518 |
value == kAsioSupportsInputMonitor) |
519 |
ret = 1L; |
520 |
break; |
521 |
case kAsioResetRequest: |
522 |
// Defer the task and perform the reset of the driver during the next "safe" situation. |
523 |
// You cannot reset the driver right now, as this code is called from the driver. |
524 |
// Reset the driver is done by completely destruct is. I.e. ASIOStop(), |
525 |
// ASIODisposeBuffers(), Destruction |
526 |
// Afterwards you initialize the driver again. |
527 |
|
528 |
//GlobalAudioOutputDeviceAsioThisPtr->asioDriverInfo.stopped; // In this sample the processing will just stop |
529 |
ret = 1L; |
530 |
break; |
531 |
case kAsioResyncRequest: |
532 |
// This informs the application, that the driver encountered some non fatal data loss. |
533 |
// It is used for synchronization purposes of different media. |
534 |
// Added mainly to work around the Win16Mutex problems in Windows 95/98 with the |
535 |
// Windows Multimedia system, which could loose data because the Mutex was hold too long |
536 |
// by another thread. |
537 |
// However a driver can issue it in other situations, too. |
538 |
ret = 1L; |
539 |
break; |
540 |
case kAsioLatenciesChanged: |
541 |
// This will inform the host application that the drivers were latencies changed. |
542 |
// Beware, it this does not mean that the buffer sizes have changed! |
543 |
// You might need to update internal delay data. |
544 |
ret = 1L; |
545 |
break; |
546 |
case kAsioEngineVersion: |
547 |
// Return the supported ASIO version of the host application. |
548 |
// If a host applications does not implement this selector, ASIO 1.0 is assumed |
549 |
// by the driver |
550 |
ret = 2L; |
551 |
break; |
552 |
case kAsioSupportsTimeInfo: |
553 |
// Informs the driver whether the asioCallbacks.bufferSwitchTimeInfo() callback |
554 |
// is supported. |
555 |
// For compatibility with ASIO 1.0 drivers the host application should always support |
556 |
// the "old" bufferSwitch method, too. |
557 |
ret = 1; |
558 |
break; |
559 |
case kAsioSupportsTimeCode: |
560 |
// Informs the driver whether application is interested in time code info. |
561 |
// If an application does not need to know about time code, the driver has less work |
562 |
// to do. |
563 |
ret = 0; |
564 |
break; |
565 |
} |
566 |
return ret; |
567 |
} |
568 |
|
569 |
|
570 |
// *************** ParameterCard *************** |
571 |
// * |
572 |
|
573 |
AudioOutputDeviceAsio::ParameterCard::ParameterCard() : DeviceCreationParameterString() { |
574 |
InitWithDefault(); // use default card |
575 |
} |
576 |
|
577 |
AudioOutputDeviceAsio::ParameterCard::ParameterCard(String s) throw (Exception) : DeviceCreationParameterString(s) { |
578 |
} |
579 |
|
580 |
String AudioOutputDeviceAsio::ParameterCard::Description() { |
581 |
return "Sound card to be used"; |
582 |
} |
583 |
|
584 |
bool AudioOutputDeviceAsio::ParameterCard::Fix() { |
585 |
return true; |
586 |
} |
587 |
|
588 |
bool AudioOutputDeviceAsio::ParameterCard::Mandatory() { |
589 |
return false; |
590 |
} |
591 |
|
592 |
std::map<String,DeviceCreationParameter*> AudioOutputDeviceAsio::ParameterCard::DependsAsParameters() { |
593 |
return std::map<String,DeviceCreationParameter*>(); // no dependencies |
594 |
} |
595 |
|
596 |
optional<String> AudioOutputDeviceAsio::ParameterCard::DefaultAsString(std::map<String,String> Parameters) { |
597 |
std::vector<String> cards = PossibilitiesAsString(Parameters); |
598 |
if (cards.empty()) throw Exception("AudioOutputDeviceAsio: Can't find any card"); |
599 |
|
600 |
// If currentAsioDriverName is empty then return the first card, |
601 |
// otherwise return the currentAsioDriverName. This avoids closing |
602 |
// the current ASIO driver when the LSCP client calls commands |
603 |
// like GET AUDIO_OUTPUT_DRIVER_PARAMETER INFO ASIO CARD, which |
604 |
// would load the default card (without this check it would always |
605 |
// be the same which would cause the above problem). |
606 |
if (currentAsioDriverName == "") { |
607 |
dmsg(2,("AudioOutputDeviceAsio::ParameterCard::DefaultAsString='%s' (first card by default)\n", cards[0].c_str())); |
608 |
return cards[0]; // first card by default |
609 |
} |
610 |
else { |
611 |
dmsg(2,("AudioOutputDeviceAsio::ParameterCard::DefaultAsString='%s'\n", currentAsioDriverName.c_str())); |
612 |
return currentAsioDriverName; |
613 |
} |
614 |
|
615 |
} |
616 |
|
617 |
std::vector<String> AudioOutputDeviceAsio::ParameterCard::PossibilitiesAsString(std::map<String,String> Parameters) { |
618 |
dmsg(2,("AudioOutputDeviceAsio::ParameterCard::PossibilitiesAsString:\n")); |
619 |
return getAsioDriverNames(); |
620 |
} |
621 |
|
622 |
void AudioOutputDeviceAsio::ParameterCard::OnSetValue(String s) throw (Exception) { |
623 |
// not posssible, as parameter is fix |
624 |
} |
625 |
|
626 |
String AudioOutputDeviceAsio::ParameterCard::Name() { |
627 |
return "CARD"; |
628 |
} |
629 |
|
630 |
|
631 |
|
632 |
// *************** ParameterSampleRate *************** |
633 |
// * |
634 |
|
635 |
AudioOutputDeviceAsio::ParameterSampleRate::ParameterSampleRate() : AudioOutputDevice::ParameterSampleRate::ParameterSampleRate() { |
636 |
} |
637 |
|
638 |
AudioOutputDeviceAsio::ParameterSampleRate::ParameterSampleRate(String s) : AudioOutputDevice::ParameterSampleRate::ParameterSampleRate(s) { |
639 |
} |
640 |
|
641 |
std::map<String,DeviceCreationParameter*> AudioOutputDeviceAsio::ParameterSampleRate::DependsAsParameters() { |
642 |
static ParameterCard card; |
643 |
std::map<String,DeviceCreationParameter*> dependencies; |
644 |
dependencies[card.Name()] = &card; |
645 |
return dependencies; |
646 |
} |
647 |
|
648 |
optional<int> AudioOutputDeviceAsio::ParameterSampleRate::DefaultAsInt(std::map<String,String> Parameters) { |
649 |
if (!Parameters.count("CARD")) { |
650 |
dmsg(2,("AudioOutputDeviceAsio::ParameterSampleRate::DefaultAsInt returning optional<int>::nothing (parameter CARD not supplied)\n")); |
651 |
return optional<int>::nothing; |
652 |
} |
653 |
|
654 |
// return the default samplerate. first try 44100 then 48000, then |
655 |
// the first samplerate found in the list |
656 |
ParameterCard card(Parameters["CARD"]); |
657 |
if (ASIO_OpenAndQueryDeviceInfo(card.ValueAsString(), &asioDriverInfo) != 0) return optional<int>::nothing; |
658 |
for (uint i = 0; i < asioDriverInfo.sampleRates.size(); i++) { |
659 |
if (asioDriverInfo.sampleRates[i] == 44100) { |
660 |
dmsg(2,("AudioOutputDeviceAsio::ParameterSampleRate::DefaultAsInt returning 44100\n")); |
661 |
return 44100; |
662 |
} |
663 |
if (asioDriverInfo.sampleRates[i] == 48000) { |
664 |
dmsg(2,("AudioOutputDeviceAsio::ParameterSampleRate::DefaultAsInt returning 48000\n")); |
665 |
return 48000; |
666 |
} |
667 |
} |
668 |
dmsg(2,("AudioOutputDeviceAsio::ParameterSampleRate::DefaultAsInt returning %d\n", |
669 |
asioDriverInfo.sampleRates[0])); |
670 |
return asioDriverInfo.sampleRates[0]; |
671 |
} |
672 |
|
673 |
std::vector<int> AudioOutputDeviceAsio::ParameterSampleRate::PossibilitiesAsInt(std::map<String,String> Parameters) { |
674 |
dmsg(2,("AudioOutputDeviceAsio::ParameterSampleRate::PossibilitiesAsInt\n")); |
675 |
if (!Parameters.count("CARD")) { |
676 |
dmsg(2,("AudioOutputDeviceAsio::ParameterSampleRate::PossibilitiesAsInt returning empty vector (parameter CARD not supplied)\n")); |
677 |
return std::vector<int>(); |
678 |
} |
679 |
|
680 |
ParameterCard card(Parameters["CARD"]); |
681 |
if (ASIO_OpenAndQueryDeviceInfo(card.ValueAsString(), &asioDriverInfo) != 0) return std::vector<int>(); |
682 |
|
683 |
for (uint i = 0; i < asioDriverInfo.sampleRates.size(); i++) { |
684 |
dmsg(2,("AudioOutputDeviceAsio::ParameterSampleRate::PossibilitiesAsInt samplerate[%d]=%d\n", i, asioDriverInfo.sampleRates[i])); |
685 |
} |
686 |
|
687 |
return asioDriverInfo.sampleRates; |
688 |
} |
689 |
|
690 |
|
691 |
|
692 |
// *************** ParameterChannels *************** |
693 |
// * |
694 |
|
695 |
AudioOutputDeviceAsio::ParameterChannels::ParameterChannels() : AudioOutputDevice::ParameterChannels::ParameterChannels() { |
696 |
//InitWithDefault(); |
697 |
// could not determine default value? ... |
698 |
//if (ValueAsInt() == 0) SetValue(2); // ... then (try) a common value |
699 |
} |
700 |
|
701 |
AudioOutputDeviceAsio::ParameterChannels::ParameterChannels(String s) : AudioOutputDevice::ParameterChannels::ParameterChannels(s) { |
702 |
} |
703 |
|
704 |
std::map<String,DeviceCreationParameter*> AudioOutputDeviceAsio::ParameterChannels::DependsAsParameters() { |
705 |
static ParameterCard card; |
706 |
std::map<String,DeviceCreationParameter*> dependencies; |
707 |
dependencies[card.Name()] = &card; |
708 |
return dependencies; |
709 |
} |
710 |
|
711 |
optional<int> AudioOutputDeviceAsio::ParameterChannels::DefaultAsInt(std::map<String,String> Parameters) { |
712 |
dmsg(2,("AudioOutputDeviceAsio::ParameterChannels::DefaultAsInt\n")); |
713 |
if (!Parameters.count("CARD")) { |
714 |
dmsg(2,("AudioOutputDeviceAsio::ParameterChannels::DefaultAsInt returning optional<int>::nothing (CARD parameter not supplied)\n")); |
715 |
return optional<int>::nothing; |
716 |
} |
717 |
|
718 |
ParameterCard card(Parameters["CARD"]); |
719 |
if (ASIO_OpenAndQueryDeviceInfo(card.ValueAsString(), &asioDriverInfo) != 0) return optional<int>::nothing; |
720 |
dmsg(2,("AudioOutputDeviceAsio::ParameterChannels::DefaultAsInt returning %ld\n", |
721 |
asioDriverInfo.numOutputChannels)); |
722 |
return asioDriverInfo.numOutputChannels; |
723 |
} |
724 |
|
725 |
optional<int> AudioOutputDeviceAsio::ParameterChannels::RangeMinAsInt(std::map<String,String> Parameters) { |
726 |
dmsg(2,("AudioOutputDeviceAsio::ParameterChannels::RangeMinAsInt\n")); |
727 |
if (!Parameters.count("CARD")) { |
728 |
dmsg(2,("AudioOutputDeviceAsio::ParameterChannels::RangeMinAsInt returning optional<int>::nothing (CARD parameter not supplied)\n")); |
729 |
return optional<int>::nothing; |
730 |
} |
731 |
dmsg(2,("AudioOutputDeviceAsio::ParameterChannels::RangeMinAsInt returning 1\n")); |
732 |
return 1; |
733 |
} |
734 |
|
735 |
optional<int> AudioOutputDeviceAsio::ParameterChannels::RangeMaxAsInt(std::map<String,String> Parameters) { |
736 |
dmsg(2,("AudioOutputDeviceAsio::ParameterChannels::RangeMaxAsInt\n")); |
737 |
if (!Parameters.count("CARD")) { |
738 |
dmsg(2,("AudioOutputDeviceAsio::ParameterChannels::RangeMaxAsInt returning optional<int>::nothing (CARD parameter not supplied)\n")); |
739 |
return optional<int>::nothing; |
740 |
} |
741 |
|
742 |
ParameterCard card(Parameters["CARD"]); |
743 |
if (ASIO_OpenAndQueryDeviceInfo(card.ValueAsString(), &asioDriverInfo) != 0) return optional<int>::nothing; |
744 |
dmsg(2,("AudioOutputDeviceAsio::ParameterChannels::RangeMaxAsInt returning %ld\n", |
745 |
asioDriverInfo.numOutputChannels)); |
746 |
return asioDriverInfo.numOutputChannels; |
747 |
} |
748 |
|
749 |
|
750 |
|
751 |
// *************** ParameterFragmentSize *************** |
752 |
// * |
753 |
|
754 |
AudioOutputDeviceAsio::ParameterFragmentSize::ParameterFragmentSize() : DeviceCreationParameterInt() { |
755 |
InitWithDefault(); |
756 |
} |
757 |
|
758 |
AudioOutputDeviceAsio::ParameterFragmentSize::ParameterFragmentSize(String s) throw (Exception) : DeviceCreationParameterInt(s) { |
759 |
} |
760 |
|
761 |
String AudioOutputDeviceAsio::ParameterFragmentSize::Description() { |
762 |
return "Size of each buffer fragment"; |
763 |
} |
764 |
|
765 |
bool AudioOutputDeviceAsio::ParameterFragmentSize::Fix() { |
766 |
return true; |
767 |
} |
768 |
|
769 |
bool AudioOutputDeviceAsio::ParameterFragmentSize::Mandatory() { |
770 |
return false; |
771 |
} |
772 |
|
773 |
std::map<String,DeviceCreationParameter*> AudioOutputDeviceAsio::ParameterFragmentSize::DependsAsParameters() { |
774 |
static ParameterCard card; |
775 |
std::map<String,DeviceCreationParameter*> dependencies; |
776 |
dependencies[card.Name()] = &card; |
777 |
return dependencies; |
778 |
} |
779 |
|
780 |
optional<int> AudioOutputDeviceAsio::ParameterFragmentSize::DefaultAsInt(std::map<String,String> Parameters) { |
781 |
dmsg(2,("AudioOutputDeviceAsio::ParameterFragmentSize::DefaultAsInt\n")); |
782 |
if (!Parameters.count("CARD")) { |
783 |
dmsg(2,("AudioOutputDeviceAsio::ParameterFragmentSize::DefaultAsInt returning optional<int>::nothing (no CARD parameter supplied\n")); |
784 |
return optional<int>::nothing; |
785 |
} |
786 |
|
787 |
ParameterCard card(Parameters["CARD"]); |
788 |
if (ASIO_OpenAndQueryDeviceInfo(card.ValueAsString(), &asioDriverInfo) != 0) return optional<int>::nothing; |
789 |
dmsg(2,("AudioOutputDeviceAsio::ParameterFragmentSize::DefaultAsInt returning %ld\n", |
790 |
asioDriverInfo.preferredBufSize)); |
791 |
return asioDriverInfo.preferredBufSize; |
792 |
} |
793 |
|
794 |
optional<int> AudioOutputDeviceAsio::ParameterFragmentSize::RangeMinAsInt(std::map<String,String> Parameters) { |
795 |
dmsg(2,("AudioOutputDeviceAsio::ParameterFragmentSize::RangeMinAsInt\n")); |
796 |
if (!Parameters.count("CARD")) { |
797 |
dmsg(2,("AudioOutputDeviceAsio::ParameterFragmentSize::RangeMinAsInt returning optional<int>::nothing (no CARD parameter supplied\n")); |
798 |
return optional<int>::nothing; |
799 |
} |
800 |
|
801 |
ParameterCard card(Parameters["CARD"]); |
802 |
if (ASIO_OpenAndQueryDeviceInfo(card.ValueAsString(), &asioDriverInfo) != 0) return optional<int>::nothing; |
803 |
dmsg(2,("AudioOutputDeviceAsio::ParameterFragmentSize::RangeMinAsInt returning %ld\n", |
804 |
asioDriverInfo.minBufSize)); |
805 |
return asioDriverInfo.minBufSize; |
806 |
} |
807 |
|
808 |
optional<int> AudioOutputDeviceAsio::ParameterFragmentSize::RangeMaxAsInt(std::map<String,String> Parameters) { |
809 |
dmsg(2,("AudioOutputDeviceAsio::ParameterFragmentSize::RangeMaxAsInt\n")); |
810 |
if (!Parameters.count("CARD")) { |
811 |
dmsg(2,("AudioOutputDeviceAsio::ParameterFragmentSize::RangeMaxAsInt returning optional<int>::nothing (no CARD parameter supplied\n")); |
812 |
return optional<int>::nothing; |
813 |
} |
814 |
|
815 |
ParameterCard card(Parameters["CARD"]); |
816 |
if (ASIO_OpenAndQueryDeviceInfo(card.ValueAsString(), &asioDriverInfo) != 0) return optional<int>::nothing; |
817 |
dmsg(2,("AudioOutputDeviceAsio::ParameterFragmentSize::RangeMaxAsInt returning %ld\n", |
818 |
asioDriverInfo.maxBufSize)); |
819 |
return asioDriverInfo.maxBufSize; |
820 |
} |
821 |
|
822 |
std::vector<int> AudioOutputDeviceAsio::ParameterFragmentSize::PossibilitiesAsInt(std::map<String,String> Parameters) { |
823 |
dmsg(2,("AudioOutputDeviceAsio::ParameterFragmentSize::PossibilitiesAsInt\n")); |
824 |
return std::vector<int>(); |
825 |
} |
826 |
|
827 |
void AudioOutputDeviceAsio::ParameterFragmentSize::OnSetValue(int i) throw (Exception) { |
828 |
// not posssible, as parameter is fix |
829 |
} |
830 |
|
831 |
String AudioOutputDeviceAsio::ParameterFragmentSize::Name() { |
832 |
return "FRAGMENTSIZE"; |
833 |
} |
834 |
|
835 |
|
836 |
|
837 |
// *************** AudioOutputDeviceAsio *************** |
838 |
// * |
839 |
|
840 |
/** |
841 |
* Create and initialize Asio audio output device with given parameters. |
842 |
* |
843 |
* @param Parameters - optional parameters |
844 |
* @throws AudioOutputException if output device cannot be opened |
845 |
*/ |
846 |
AudioOutputDeviceAsio::AudioOutputDeviceAsio(std::map<String,DeviceCreationParameter*> Parameters) : AudioOutputDevice(Parameters) { |
847 |
if (AudioOutputDeviceAsioInstantiated) throw Exception("AudioOutputDeviceAsio: Sorry, only one ASIO card at time can be opened"); |
848 |
AudioOutputDeviceAsioInstantiated = true; |
849 |
this->uiAsioChannels = ((DeviceCreationParameterInt*)Parameters["CHANNELS"])->ValueAsInt(); |
850 |
this->uiSamplerate = ((DeviceCreationParameterInt*)Parameters["SAMPLERATE"])->ValueAsInt(); |
851 |
this->FragmentSize = ((DeviceCreationParameterInt*)Parameters["FRAGMENTSIZE"])->ValueAsInt(); |
852 |
String card = ((DeviceCreationParameterString*)Parameters["CARD"])->ValueAsString(); |
853 |
|
854 |
|
855 |
dmsg(2,("AudioOutputDeviceAsio::AudioOutputDeviceAsio constructor channels=%d samplerate=%d fragmentsize=%d card=%s\n", |
856 |
uiAsioChannels, uiSamplerate, FragmentSize, card.c_str())); |
857 |
|
858 |
asioIsPlaying = false; |
859 |
|
860 |
if (ASIO_OpenAndQueryDeviceInfo(card, &asioDriverInfo) != 0) { |
861 |
throw AudioOutputException("Error: ASIO Initialization error"); |
862 |
} |
863 |
dmsg(2,("AudioOutputDeviceAsio::AudioOutputDeviceAsio: after ASIO_OpenAndQueryDeviceInfo\n")); |
864 |
|
865 |
ASIOError asioError; |
866 |
if ((asioError = ASIOSetSampleRate(uiSamplerate)) != ASE_OK) { |
867 |
dmsg(1,("AudioOutputDeviceAsio::AudioOutputDeviceAsio: ASIOSetSampleRate failed: %d\n", int(asioError))); |
868 |
throw AudioOutputException("Error: ASIOSetSampleRate: cannot set samplerate."); |
869 |
} |
870 |
dmsg(2,("AudioOutputDeviceAsio::AudioOutputDeviceAsio: after ASIOSetSampleRate\n")); |
871 |
|
872 |
asioDriverInfo.ASIOOutputReadySupported = (ASIOOutputReady() == ASE_OK); |
873 |
dmsg(2,("AudioOutputDeviceAsio::AudioOutputDeviceAsio: after ASIOOutputReady: %d\n", |
874 |
asioDriverInfo.ASIOOutputReadySupported)); |
875 |
|
876 |
asioDriverInfo.numInputBuffers = 0; |
877 |
asioDriverInfo.numOutputBuffers = uiAsioChannels; |
878 |
asioDriverInfo.chosenBufSize = FragmentSize; |
879 |
|
880 |
for (uint i = 0; i < uiAsioChannels; i++) { |
881 |
asioDriverInfo.bufferInfos[i].isInput = ASIOFalse; |
882 |
asioDriverInfo.bufferInfos[i].channelNum = i; |
883 |
} |
884 |
|
885 |
asioCallbacks.bufferSwitch = &bufferSwitch; |
886 |
asioCallbacks.sampleRateDidChange = &sampleRateChanged; |
887 |
asioCallbacks.asioMessage = &asioMessages; |
888 |
asioCallbacks.bufferSwitchTimeInfo = &bufferSwitchTimeInfo; |
889 |
|
890 |
if ((asioError = ASIOCreateBuffers(asioDriverInfo.bufferInfos, |
891 |
asioDriverInfo.numOutputBuffers, |
892 |
asioDriverInfo.chosenBufSize, |
893 |
&asioCallbacks)) != ASE_OK) { |
894 |
dmsg(1,("AudioOutputDeviceAsio::AudioOutputDeviceAsio: ASIOCreateBuffers failed: %d\n", int(asioError))); |
895 |
throw AudioOutputException("AudioOutputDeviceAsio: Error: ASIOCreateBuffers failed."); |
896 |
} |
897 |
dmsg(2,("AudioOutputDeviceAsio::AudioOutputDeviceAsio: after ASIOCreateBuffers\n")); |
898 |
|
899 |
// create audio channels for this audio device to which the sampler engines can write to |
900 |
for (uint i = 0; i < uiAsioChannels; i++) { |
901 |
Channels.push_back(new AudioChannel(i, FragmentSize)); |
902 |
} |
903 |
|
904 |
// FIXME: temporary global variable used to store the this pointer |
905 |
// for the ASIO callbacks wanting to access the AudioOutputDeviceAsio |
906 |
// methods |
907 |
GlobalAudioOutputDeviceAsioThisPtr = this; |
908 |
|
909 |
if (((DeviceCreationParameterBool*)Parameters["ACTIVE"])->ValueAsBool()) { |
910 |
Play(); |
911 |
} |
912 |
} |
913 |
|
914 |
AudioOutputDeviceAsio::~AudioOutputDeviceAsio() { |
915 |
ASIOExit(); |
916 |
asioDriverOpened = false; |
917 |
AudioOutputDeviceAsioInstantiated = false; |
918 |
} |
919 |
|
920 |
void AudioOutputDeviceAsio::Play() { |
921 |
dmsg(2,("AudioOutputDeviceAsio::Play()\n")); |
922 |
ASIOError asioError; |
923 |
if ((asioError = ASIOStart()) != ASE_OK) { |
924 |
asioIsPlaying = false; |
925 |
dmsg(1,("AudioOutputDeviceAsio::Play: ASIOStart failed: %d\n", int(asioError))); |
926 |
throw AudioOutputException("AudioOutputDeviceAsio: Error: ASIOStart failed"); |
927 |
} |
928 |
else asioIsPlaying = true; |
929 |
} |
930 |
|
931 |
bool AudioOutputDeviceAsio::IsPlaying() { |
932 |
return asioIsPlaying; |
933 |
} |
934 |
|
935 |
void AudioOutputDeviceAsio::Stop() { |
936 |
dmsg(2,("AudioOutputDeviceAsio::Stop()\n")); |
937 |
ASIOStop(); |
938 |
asioIsPlaying = false; |
939 |
} |
940 |
|
941 |
AudioChannel* AudioOutputDeviceAsio::CreateChannel(uint ChannelNr) { |
942 |
dmsg(2,("AudioOutputDeviceAsio::CreateChannel value=%d uiAsioChannels=%d\n", |
943 |
ChannelNr, uiAsioChannels)); |
944 |
// just create a mix channel |
945 |
return new AudioChannel(ChannelNr, Channel(ChannelNr % uiAsioChannels)); |
946 |
} |
947 |
|
948 |
uint AudioOutputDeviceAsio::MaxSamplesPerCycle() { |
949 |
dmsg(2,("AudioOutputDeviceAsio::MaxSamplesPerCycle value=%d\n", FragmentSize)); |
950 |
return FragmentSize; |
951 |
} |
952 |
|
953 |
uint AudioOutputDeviceAsio::SampleRate() { |
954 |
dmsg(2,("AudioOutputDeviceAsio::SampleRate value=%d\n", uiSamplerate)); fflush(stdout); |
955 |
return uiSamplerate; |
956 |
} |
957 |
|
958 |
String AudioOutputDeviceAsio::Name() { |
959 |
return "ASIO"; |
960 |
} |
961 |
|
962 |
String AudioOutputDeviceAsio::Driver() { |
963 |
return Name(); |
964 |
} |
965 |
|
966 |
String AudioOutputDeviceAsio::Description() { |
967 |
return "Audio Streaming Input Output 2.2"; |
968 |
} |
969 |
|
970 |
String AudioOutputDeviceAsio::Version() { |
971 |
String s = "$Revision: 1.6 $"; |
972 |
return s.substr(11, s.size() - 13); // cut dollar signs, spaces and CVS macro keyword |
973 |
} |
974 |
|
975 |
} // namespace LinuxSampler |