Jack2: JackPortAudioAdapter.cpp Source File

00001 /*
00002 Copyright (C) 2008 Grame
00003 
00004 This program is free software; you can redistribute it and/or modify
00005 it under the terms of the GNU General Public License as published by
00006 the Free Software Foundation; either version 2 of the License, or
00007 (at your option) any later version.
00008 
00009 This program is distributed in the hope that it will be useful,
00010 but WITHOUT ANY WARRANTY; without even the implied warranty of
00011 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00012 GNU General Public License for more details.
00013 
00014 You should have received a copy of the GNU General Public License
00015 along with this program; if not, write to the Free Software
00016 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
00017 
00018 */
00019 
00020 #include "JackPortAudioAdapter.h"
00021 #include "JackError.h"
00022 
00023 namespace Jack
00024 {
00025 
00026     int JackPortAudioAdapter::Render(const void* inputBuffer,
00027                                     void* outputBuffer,
00028                                     unsigned long framesPerBuffer,
00029                                     const PaStreamCallbackTimeInfo* timeInfo,
00030                                     PaStreamCallbackFlags statusFlags,
00031                                     void* userData)
00032     {
00033         static_cast<JackPortAudioAdapter*>(userData)->PushAndPull((jack_default_audio_sample_t**)inputBuffer, (jack_default_audio_sample_t**)outputBuffer, framesPerBuffer);
00034         return paContinue;
00035     }
00036 
00037     JackPortAudioAdapter::JackPortAudioAdapter(jack_nframes_t buffer_size, jack_nframes_t sample_rate, const JSList* params)
00038             : JackAudioAdapterInterface(buffer_size, sample_rate)
00039     {
00040         jack_log("JackPortAudioAdapter::JackPortAudioAdapter buffer_size = %d, sample_rate = %d", buffer_size, sample_rate);
00041 
00042         const JSList* node;
00043         const jack_driver_param_t* param;
00044         int in_max = 0;
00045         int out_max = 0;
00046 
00047         fInputDevice = Pa_GetDefaultInputDevice();
00048         fOutputDevice = Pa_GetDefaultOutputDevice();
00049 
00050         for (node = params; node; node = jack_slist_next(node)) {
00051             param = (const jack_driver_param_t*) node->data;
00052 
00053             switch (param->character)
00054             {
00055             case 'i' :
00056                 fCaptureChannels = param->value.ui;
00057                 break;
00058             case 'o' :
00059                 fPlaybackChannels = param->value.ui;
00060                 break;
00061             case 'C' :
00062                 if (fPaDevices.GetInputDeviceFromName(param->value.str, fInputDevice, in_max) < 0) {
00063                     jack_error("Can't use %s, taking default input device", param->value.str);
00064                     fInputDevice = Pa_GetDefaultInputDevice();
00065                 }
00066                 break;
00067             case 'P' :
00068                 if (fPaDevices.GetOutputDeviceFromName(param->value.str, fOutputDevice, out_max) < 0) {
00069                     jack_error("Can't use %s, taking default output device", param->value.str);
00070                     fOutputDevice = Pa_GetDefaultOutputDevice();
00071                 }
00072                 break;
00073             case 'r' :
00074                 SetAdaptedSampleRate(param->value.ui);
00075                 break;
00076             case 'p' :
00077                 SetAdaptedBufferSize(param->value.ui);
00078                 break;
00079             case 'd' :
00080                 if (fPaDevices.GetInputDeviceFromName(param->value.str, fInputDevice, in_max) < 0)
00081                     jack_error("Can't use %s, taking default input device", param->value.str);
00082                 if (fPaDevices.GetOutputDeviceFromName(param->value.str, fOutputDevice, out_max) < 0)
00083                     jack_error("Can't use %s, taking default output device", param->value.str);
00084                 break;
00085             case 'l' :
00086                 fPaDevices.DisplayDevicesNames();
00087                 break;
00088             case 'q':
00089                 fQuality = param->value.ui;
00090                 break;
00091             case 'g':
00092                 fRingbufferCurSize = param->value.ui;
00093                 fAdaptative = false;
00094                 break;
00095             }
00096         }
00097 
00098         //max channels
00099         if (in_max == 0 && fInputDevice != paNoDevice)
00100             in_max = fPaDevices.GetDeviceInfo(fInputDevice)->maxInputChannels;
00101         if (out_max == 0 && fOutputDevice != paNoDevice)
00102             out_max = fPaDevices.GetDeviceInfo(fOutputDevice)->maxOutputChannels;
00103 
00104         //effective channels
00105         if ((fCaptureChannels == 0) || (fCaptureChannels > in_max))
00106             fCaptureChannels = in_max;
00107         if ((fPlaybackChannels == 0) || (fPlaybackChannels > out_max))
00108             fPlaybackChannels = out_max;
00109 
00110         //set adapter interface channels
00111         SetInputs(fCaptureChannels);
00112         SetOutputs(fPlaybackChannels);
00113     }
00114 
00115     int JackPortAudioAdapter::Open()
00116     {
00117         PaError err;
00118         PaStreamParameters inputParameters;
00119         PaStreamParameters outputParameters;
00120 
00121         if (fInputDevice == paNoDevice && fOutputDevice == paNoDevice) {
00122             jack_error("No input and output device!!");
00123             return -1;
00124         }
00125 
00126         jack_log("JackPortAudioAdapter::Open fInputDevice = %d DeviceName %s", fInputDevice, fPaDevices.GetFullName(fInputDevice).c_str());
00127         jack_log("JackPortAudioAdapter::Open fOutputDevice = %d DeviceName %s", fOutputDevice, fPaDevices.GetFullName(fOutputDevice).c_str());
00128         jack_log("JackPortAudioAdapter::Open fAdaptedBufferSize = %u fAdaptedSampleRate %u", fAdaptedBufferSize, fAdaptedSampleRate);
00129 
00130         inputParameters.device = fInputDevice;
00131         inputParameters.channelCount = fCaptureChannels;
00132         inputParameters.sampleFormat = paFloat32 | paNonInterleaved;            // 32 bit floating point output
00133         inputParameters.suggestedLatency = (fInputDevice != paNoDevice)   // TODO: check how to setup this on ASIO
00134                                            ? fPaDevices.GetDeviceInfo(fInputDevice)->defaultLowInputLatency
00135                                            : 0;
00136         inputParameters.hostApiSpecificStreamInfo = NULL;
00137 
00138         outputParameters.device = fOutputDevice;
00139         outputParameters.channelCount = fPlaybackChannels;
00140         outputParameters.sampleFormat = paFloat32 | paNonInterleaved;           // 32 bit floating point output
00141         outputParameters.suggestedLatency = (fOutputDevice != paNoDevice)       // TODO: check how to setup this on ASIO
00142                                             ? fPaDevices.GetDeviceInfo(fOutputDevice)->defaultLowOutputLatency
00143                                             : 0;
00144         outputParameters.hostApiSpecificStreamInfo = NULL;
00145 
00146         err = Pa_OpenStream( &fStream,
00147                            (fInputDevice == paNoDevice) ? 0 : &inputParameters,
00148                            (fOutputDevice == paNoDevice) ? 0 : &outputParameters,
00149                             fAdaptedSampleRate,
00150                             fAdaptedBufferSize,
00151                             paNoFlag,  // Clipping is on...
00152                             Render,
00153                             this);
00154 
00155         if (err != paNoError) {
00156             jack_error("Pa_OpenStream error = %s", Pa_GetErrorText(err));
00157             return -1;
00158         }
00159 
00160         err = Pa_StartStream(fStream);
00161 
00162         if (err != paNoError) {
00163             jack_error("Pa_StartStream error = %s", Pa_GetErrorText(err));
00164             return -1;
00165         }
00166 
00167         jack_log("JackPortAudioAdapter::Open OK");
00168         return 0;
00169     }
00170 
00171     int JackPortAudioAdapter::Close()
00172     {
00173 #ifdef JACK_MONITOR
00174         fTable.Save(fHostBufferSize, fHostSampleRate, fAdaptedSampleRate, fAdaptedBufferSize);
00175 #endif
00176         jack_log("JackPortAudioAdapter::Close");
00177         Pa_StopStream(fStream);
00178         jack_log("JackPortAudioAdapter:: Pa_StopStream");
00179         Pa_CloseStream(fStream);
00180         jack_log("JackPortAudioAdapter:: Pa_CloseStream");
00181         return 0;
00182     }
00183 
00184     int JackPortAudioAdapter::SetSampleRate(jack_nframes_t sample_rate)
00185     {
00186         JackAudioAdapterInterface::SetHostSampleRate(sample_rate);
00187         Close();
00188         return Open();
00189     }
00190 
00191     int JackPortAudioAdapter::SetBufferSize(jack_nframes_t buffer_size)
00192     {
00193         JackAudioAdapterInterface::SetHostBufferSize(buffer_size);
00194         Close();
00195         return Open();
00196     }
00197 
00198 } // namespace
00199 
00200 #ifdef __cplusplus
00201 extern "C"
00202 {
00203 #endif
00204 
00205     SERVER_EXPORT jack_driver_desc_t* jack_get_descriptor()
00206     {
00207         jack_driver_desc_t * desc;
00208         jack_driver_desc_filler_t filler;
00209         jack_driver_param_value_t value;
00210 
00211         desc = jack_driver_descriptor_construct("audioadapter", JackDriverNone, "netjack audio <==> net backend adapter", &filler);
00212 
00213         value.ui = 0;
00214         jack_driver_descriptor_add_parameter(desc, &filler, "in-channels", 'i', JackDriverParamInt, &value, NULL, "Maximum number of input channels", NULL);
00215         jack_driver_descriptor_add_parameter(desc, &filler, "out-channels", 'o', JackDriverParamInt, &value, NULL, "Maximum number of output channels", NULL);
00216 
00217         jack_driver_descriptor_add_parameter(desc, &filler, "capture", 'C', JackDriverParamString, &value, NULL, "Provide capture ports. Optionally set PortAudio device name", NULL);
00218 
00219         jack_driver_descriptor_add_parameter(desc, &filler, "playback", 'P', JackDriverParamString, &value, NULL, "Provide playback ports. Optionally set PortAudio device name", NULL);
00220 
00221         value.ui = 44100U;
00222         jack_driver_descriptor_add_parameter(desc, &filler, "rate", 'r', JackDriverParamUInt, &value, NULL, "Sample rate", NULL);
00223 
00224         value.ui = 512U;
00225         jack_driver_descriptor_add_parameter(desc, &filler, "periodsize", 'p', JackDriverParamUInt, &value, NULL, "Period size", NULL);
00226 
00227         jack_driver_descriptor_add_parameter(desc, &filler, "device", 'd', JackDriverParamString, &value, NULL, "PortAudio device name", NULL);
00228 
00229         value.i = true;
00230         jack_driver_descriptor_add_parameter(desc, &filler, "list-devices", 'l', JackDriverParamBool, &value, NULL, "Display available PortAudio devices", NULL);
00231 
00232         value.ui = 0;
00233         jack_driver_descriptor_add_parameter(desc, &filler, "quality", 'q', JackDriverParamInt, &value, NULL, "Resample algorithm quality (0 - 4)", NULL);
00234 
00235         value.ui = 32768;
00236         jack_driver_descriptor_add_parameter(desc, &filler, "ring-buffer", 'g', JackDriverParamInt, &value, NULL, "Fixed ringbuffer size", "Fixed ringbuffer size (if not set => automatic adaptative)");
00237 
00238         return desc;
00239     }
00240 
00241 #ifdef __cplusplus
00242 }
00243 #endif
00244