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00023 #include <dev_sound.h>
00024 #include <pablio.h>
00025 #include <jutils.h>
00026 #include <generic.h>
00027
00028 #define PA_SAMPLE_TYPE paInt16
00029 #define PA_SAMPLES_PER_FRAME 2
00030 #define PA_MAX_FRAMES 4096
00031 #define PA_NUM_SECONDS 5
00032
00033 #ifdef HAVE_JACK
00034 int dev_jack_process(jack_nframes_t nframes, void *arg) {
00035 jack_nframes_t opframes;
00036 SoundDevice *dev = (SoundDevice*)arg;
00037 if(!dev->jack) return 0;
00038
00039
00040 dev->jack_out_buf = (jack_default_audio_sample_t*)
00041 jack_port_get_buffer(dev->jack_out_port,nframes);
00042 opframes = dev->jack_out_pipe->read
00043 (nframes * sizeof(float) * 2 , dev->jack_out_buf);
00044
00045
00046 dev->jack_in_buf = (jack_default_audio_sample_t*)
00047 jack_port_get_buffer(dev->jack_in_port,nframes);
00048 dev->jack_in_pipe->write
00049 (nframes * sizeof(float) * 2 , dev->jack_in_buf);
00050
00051 return 0;
00052 }
00053
00054 void dev_jack_shutdown(void *arg) {
00055 SoundDevice *dev = (SoundDevice*)arg;
00056
00057 dev->jack = false;
00058 jack_port_unregister(dev->jack_client, dev->jack_in_port);
00059 jack_port_unregister(dev->jack_client, dev->jack_out_port);
00060 jack_deactivate(dev->jack_client);
00061 delete dev->jack_in_pipe;
00062 delete dev->jack_out_pipe;
00063 }
00064 #endif
00065
00066 SoundDevice::SoundDevice() {
00067 aInStream = NULL;
00068 aOutStream = NULL;
00069 jack = false;
00070 jack_in = false;
00071 jack_out = false;
00072 }
00073
00074 SoundDevice::~SoundDevice() {
00075 close();
00076 }
00077
00078 bool SoundDevice::pablio_input(bool state) {
00079 if(state && !aInStream) {
00080 err = OpenAudioStream( &aInStream, SAMPLE_RATE, PA_SAMPLE_TYPE,
00081 (PABLIO_READ | PABLIO_STEREO) );
00082 if( err != paNoError) {
00083 Pa_Terminate();
00084 error("error opening input sound device: %s",Pa_GetErrorText( err ) );
00085 return false;
00086 } else
00087 info_input = Pa_GetDeviceInfo( Pa_GetDefaultInputDeviceID() );
00088
00089 } else if(!state && aInStream) {
00090
00091 CloseAudioStream(aInStream);
00092 aInStream = NULL;
00093 info_input = NULL;
00094
00095 }
00096 return true;
00097 }
00098
00099 bool SoundDevice::input(bool state) {
00100 bool res = false;
00101 if(jack) return true;
00102 if(!res) res = pablio_input(state);
00103 return res;
00104 }
00105
00106
00107 bool SoundDevice::pablio_output(bool state) {
00108 if(state && !aOutStream) {
00109 err = OpenAudioStream( &aOutStream, SAMPLE_RATE, PA_SAMPLE_TYPE,
00110 (PABLIO_WRITE | PABLIO_STEREO) );
00111 if( err != paNoError) {
00112 Pa_Terminate();
00113 error("error opening output sound device: %s",Pa_GetErrorText( err ) );
00114 return false;
00115 } else
00116 info_output = Pa_GetDeviceInfo( Pa_GetDefaultOutputDeviceID() );
00117
00118 } else if(!state && aOutStream) {
00119
00120 CloseAudioStream(aOutStream);
00121 aOutStream = NULL;
00122 info_output = NULL;
00123
00124 }
00125 return true;
00126 }
00127
00128 bool SoundDevice::output(bool state) {
00129 bool res = false;
00130 if(jack) return true;
00131 if(!res) res = pablio_output(state);
00132 return res;
00133 }
00134
00135 bool SoundDevice::open(bool read, bool write) {
00136
00137
00138
00139 #ifdef HAVE_JACK
00140
00141 jack_sample_size = sizeof(jack_default_audio_sample_t);
00142 if(!jack)
00143 if( (jack_client = jack_client_new("MuSE")) !=0 ) {
00144 notice("jack audio daemon detected");
00145 act("hooking in/out sound channels");
00146 warning("this feature is still experimental and won't work!");
00147 warning("you need to stop jack and free the audio card");
00148 jack = true;
00149 jack_samplerate = jack_get_sample_rate(jack_client);
00150 jack_set_process_callback(jack_client, dev_jack_process, this);
00151 jack_on_shutdown(jack_client,dev_jack_shutdown,this);
00152
00153 jack_in_pipe = new Pipe();
00154 jack_in_pipe->set_output_type("copy_float_to_int16");
00155 jack_in_pipe->set_block(false,true);
00156
00157 jack_out_pipe = new Pipe();
00158 jack_out_pipe->set_input_type("copy_int16_to_float");
00159 jack_in_pipe->set_block(true,false);
00160
00161
00162 jack_in_port = jack_port_register(jack_client, "capture",
00163 JACK_DEFAULT_AUDIO_TYPE,
00164 JackPortIsInput, 0);
00165
00166 jack_out_port = jack_port_register(jack_client, "playback",
00167 JACK_DEFAULT_AUDIO_TYPE,
00168 JackPortIsOutput, 0);
00169
00170 jack_activate(jack_client);
00171 return true;
00172 }
00173 #endif
00174
00175 if( ! output(write) ) return false;
00176
00177 if(info_output) func("output device: %s",info_output->name);
00178 else error("output device not available");
00179
00180 if( ! input(read) ) return false;
00181
00182 if(info_input) func("input device: %s",info_input->name);
00183 else error("input device not available");
00184
00185 return true;
00186 }
00187
00188 void SoundDevice::close() {
00189 if(aInStream)
00190 CloseAudioStream( aInStream);
00191 aInStream = NULL;
00192
00193 if(aOutStream)
00194 CloseAudioStream( aOutStream);
00195 aOutStream = NULL;
00196 }
00197
00198 int SoundDevice::read(void *buf, int len) {
00199
00200 int res = -1;
00201
00202 if(jack) {
00203
00204 res = jack_in_pipe->read(len<<1,buf);
00205
00206 } else if(aInStream) {
00207
00208
00209 res = ReadAudioStream( aInStream, buf, len);
00210
00211 }
00212 return res;
00213 }
00214
00215 int SoundDevice::write(void *buf, int len) {
00216
00217 int res = -1;
00218
00219 if(jack) {
00220
00221 res = jack_out_pipe->write(len<<1,buf);
00222
00223 } else if(aOutStream) {
00224
00225
00226 res = WriteAudioStream( aOutStream, buf, len>>1);
00227
00228 }
00229 return res;
00230
00231 }