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<h1>JackAlsaDriver.cpp</h1> </div>
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<div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
<a name="l00002"></a>00002 <span class="comment">Copyright (C) 2001 Paul Davis</span>
<a name="l00003"></a>00003 <span class="comment">Copyright (C) 2004 Grame</span>
<a name="l00004"></a>00004 <span class="comment"></span>
<a name="l00005"></a>00005 <span class="comment">This program is free software; you can redistribute it and/or modify</span>
<a name="l00006"></a>00006 <span class="comment">it under the terms of the GNU General Public License as published by</span>
<a name="l00007"></a>00007 <span class="comment">the Free Software Foundation; either version 2 of the License, or</span>
<a name="l00008"></a>00008 <span class="comment">(at your option) any later version.</span>
<a name="l00009"></a>00009 <span class="comment"></span>
<a name="l00010"></a>00010 <span class="comment">This program is distributed in the hope that it will be useful,</span>
<a name="l00011"></a>00011 <span class="comment">but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00012"></a>00012 <span class="comment">MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span>
<a name="l00013"></a>00013 <span class="comment">GNU General Public License for more details.</span>
<a name="l00014"></a>00014 <span class="comment"></span>
<a name="l00015"></a>00015 <span class="comment">You should have received a copy of the GNU General Public License</span>
<a name="l00016"></a>00016 <span class="comment">along with this program; if not, write to the Free Software</span>
<a name="l00017"></a>00017 <span class="comment">Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.</span>
<a name="l00018"></a>00018 <span class="comment"></span>
<a name="l00019"></a>00019 <span class="comment">*/</span>
<a name="l00020"></a>00020
<a name="l00021"></a>00021 <span class="preprocessor">#define __STDC_FORMAT_MACROS // For inttypes.h to work in C++</span>
<a name="l00022"></a>00022 <span class="preprocessor"></span>
<a name="l00023"></a>00023 <span class="preprocessor">#include <iostream></span>
<a name="l00024"></a>00024 <span class="preprocessor">#include <math.h></span>
<a name="l00025"></a>00025 <span class="preprocessor">#include <stdio.h></span>
<a name="l00026"></a>00026 <span class="preprocessor">#include <memory.h></span>
<a name="l00027"></a>00027 <span class="preprocessor">#include <unistd.h></span>
<a name="l00028"></a>00028 <span class="preprocessor">#include <stdlib.h></span>
<a name="l00029"></a>00029 <span class="preprocessor">#include <errno.h></span>
<a name="l00030"></a>00030 <span class="preprocessor">#include <stdarg.h></span>
<a name="l00031"></a>00031 <span class="preprocessor">#include <signal.h></span>
<a name="l00032"></a>00032 <span class="preprocessor">#include <sys/types.h></span>
<a name="l00033"></a>00033 <span class="preprocessor">#include <sys/time.h></span>
<a name="l00034"></a>00034 <span class="preprocessor">#include <regex.h></span>
<a name="l00035"></a>00035 <span class="preprocessor">#include <string.h></span>
<a name="l00036"></a>00036
<a name="l00037"></a>00037 <span class="preprocessor">#include "JackAlsaDriver.h"</span>
<a name="l00038"></a>00038 <span class="preprocessor">#include "JackEngineControl.h"</span>
<a name="l00039"></a>00039 <span class="preprocessor">#include "JackClientControl.h"</span>
<a name="l00040"></a>00040 <span class="preprocessor">#include "JackPort.h"</span>
<a name="l00041"></a>00041 <span class="preprocessor">#include "JackGraphManager.h"</span>
<a name="l00042"></a>00042 <span class="preprocessor">#include "JackLockedEngine.h"</span>
<a name="l00043"></a>00043 <span class="preprocessor">#include "JackPosixThread.h"</span>
<a name="l00044"></a>00044 <span class="preprocessor">#include "JackCompilerDeps.h"</span>
<a name="l00045"></a>00045 <span class="preprocessor">#include "JackServerGlobals.h"</span>
<a name="l00046"></a>00046
<a name="l00047"></a>00047 <span class="keyword">namespace </span>Jack
<a name="l00048"></a>00048 {
<a name="l00049"></a>00049
<a name="l00050"></a>00050 <span class="keywordtype">int</span> JackAlsaDriver::SetBufferSize(jack_nframes_t buffer_size)
<a name="l00051"></a>00051 {
<a name="l00052"></a>00052 <a class="code" href="group__ServerControl.html#ga35f69faaee3bb9b958ed8c9a5f62246c">jack_log</a>(<span class="stringliteral">"JackAlsaDriver::SetBufferSize %ld"</span>, buffer_size);
<a name="l00053"></a>00053 <span class="keywordtype">int</span> res = alsa_driver_reset_parameters((<a class="code" href="struct__alsa__driver.html">alsa_driver_t</a> *)fDriver, buffer_size,
<a name="l00054"></a>00054 ((<a class="code" href="struct__alsa__driver.html">alsa_driver_t</a> *)fDriver)->user_nperiods,
<a name="l00055"></a>00055 ((<a class="code" href="struct__alsa__driver.html">alsa_driver_t</a> *)fDriver)->frame_rate);
<a name="l00056"></a>00056
<a name="l00057"></a>00057 <span class="keywordflow">if</span> (res == 0) { <span class="comment">// update fEngineControl and fGraphManager</span>
<a name="l00058"></a>00058 JackAudioDriver::SetBufferSize(buffer_size); <span class="comment">// never fails</span>
<a name="l00059"></a>00059 } <span class="keywordflow">else</span> {
<a name="l00060"></a>00060 alsa_driver_reset_parameters((<a class="code" href="struct__alsa__driver.html">alsa_driver_t</a> *)fDriver, fEngineControl->fBufferSize,
<a name="l00061"></a>00061 ((<a class="code" href="struct__alsa__driver.html">alsa_driver_t</a> *)fDriver)->user_nperiods,
<a name="l00062"></a>00062 ((<a class="code" href="struct__alsa__driver.html">alsa_driver_t</a> *)fDriver)->frame_rate);
<a name="l00063"></a>00063 }
<a name="l00064"></a>00064
<a name="l00065"></a>00065 <span class="keywordflow">return</span> res;
<a name="l00066"></a>00066 }
<a name="l00067"></a>00067
<a name="l00068"></a>00068 <span class="keywordtype">int</span> JackAlsaDriver::Attach()
<a name="l00069"></a>00069 {
<a name="l00070"></a>00070 JackPort* port;
<a name="l00071"></a>00071 <span class="keywordtype">int</span> port_index;
<a name="l00072"></a>00072 <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> port_flags = (<span class="keywordtype">unsigned</span> long)CaptureDriverFlags;
<a name="l00073"></a>00073 <span class="keywordtype">char</span> name[JACK_CLIENT_NAME_SIZE + JACK_PORT_NAME_SIZE];
<a name="l00074"></a>00074 <span class="keywordtype">char</span> alias[JACK_CLIENT_NAME_SIZE + JACK_PORT_NAME_SIZE];
<a name="l00075"></a>00075 <a class="code" href="struct__jack__latency__range.html">jack_latency_range_t</a> range;
<a name="l00076"></a>00076
<a name="l00077"></a>00077 assert(fCaptureChannels < DRIVER_PORT_NUM);
<a name="l00078"></a>00078 assert(fPlaybackChannels < DRIVER_PORT_NUM);
<a name="l00079"></a>00079
<a name="l00080"></a>00080 <a class="code" href="struct__alsa__driver.html">alsa_driver_t</a>* alsa_driver = (<a class="code" href="struct__alsa__driver.html">alsa_driver_t</a>*)fDriver;
<a name="l00081"></a>00081
<a name="l00082"></a>00082 <span class="keywordflow">if</span> (alsa_driver->has_hw_monitoring)
<a name="l00083"></a>00083 port_flags |= JackPortCanMonitor;
<a name="l00084"></a>00084
<a name="l00085"></a>00085 <span class="comment">// ALSA driver may have changed the values</span>
<a name="l00086"></a>00086 JackAudioDriver::SetBufferSize(alsa_driver->frames_per_cycle);
<a name="l00087"></a>00087 JackAudioDriver::SetSampleRate(alsa_driver->frame_rate);
<a name="l00088"></a>00088
<a name="l00089"></a>00089 <a class="code" href="group__ServerControl.html#ga35f69faaee3bb9b958ed8c9a5f62246c">jack_log</a>(<span class="stringliteral">"JackAlsaDriver::Attach fBufferSize %ld fSampleRate %ld"</span>, fEngineControl->fBufferSize, fEngineControl->fSampleRate);
<a name="l00090"></a>00090
<a name="l00091"></a>00091 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < fCaptureChannels; i++) {
<a name="l00092"></a>00092 snprintf(alias, <span class="keyword">sizeof</span>(alias) - 1, <span class="stringliteral">"%s:%s:out%d"</span>, fAliasName, fCaptureDriverName, i + 1);
<a name="l00093"></a>00093 snprintf(name, <span class="keyword">sizeof</span>(name) - 1, <span class="stringliteral">"%s:capture_%d"</span>, fClientControl.fName, i + 1);
<a name="l00094"></a>00094 <span class="keywordflow">if</span> ((port_index = fGraphManager->AllocatePort(fClientControl.fRefNum, name, JACK_DEFAULT_AUDIO_TYPE, (JackPortFlags)port_flags, fEngineControl->fBufferSize)) == NO_PORT) {
<a name="l00095"></a>00095 <a class="code" href="group__ServerControl.html#gac6448626e0b75fc6d9da1ccbdca0355e">jack_error</a>(<span class="stringliteral">"driver: cannot register port for %s"</span>, name);
<a name="l00096"></a>00096 <span class="keywordflow">return</span> -1;
<a name="l00097"></a>00097 }
<a name="l00098"></a>00098 port = fGraphManager->GetPort(port_index);
<a name="l00099"></a>00099 port->SetAlias(alias);
<a name="l00100"></a>00100 range.<a class="code" href="struct__jack__latency__range.html#ab357b9064e2793e29755f5a6b550c3f2">min</a> = range.<a class="code" href="struct__jack__latency__range.html#a27a00059e59b8f7790d0479f8748a68f">max</a> = alsa_driver->frames_per_cycle + alsa_driver->capture_frame_latency;
<a name="l00101"></a>00101 port->SetLatencyRange(JackCaptureLatency, &range);
<a name="l00102"></a>00102 fCapturePortList[i] = port_index;
<a name="l00103"></a>00103 <a class="code" href="group__ServerControl.html#ga35f69faaee3bb9b958ed8c9a5f62246c">jack_log</a>(<span class="stringliteral">"JackAlsaDriver::Attach fCapturePortList[i] %ld "</span>, port_index);
<a name="l00104"></a>00104 }
<a name="l00105"></a>00105
<a name="l00106"></a>00106 port_flags = (<span class="keywordtype">unsigned</span> long)PlaybackDriverFlags;
<a name="l00107"></a>00107
<a name="l00108"></a>00108 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < fPlaybackChannels; i++) {
<a name="l00109"></a>00109 snprintf(alias, <span class="keyword">sizeof</span>(alias) - 1, <span class="stringliteral">"%s:%s:in%d"</span>, fAliasName, fPlaybackDriverName, i + 1);
<a name="l00110"></a>00110 snprintf(name, <span class="keyword">sizeof</span>(name) - 1, <span class="stringliteral">"%s:playback_%d"</span>, fClientControl.fName, i + 1);
<a name="l00111"></a>00111 <span class="keywordflow">if</span> ((port_index = fGraphManager->AllocatePort(fClientControl.fRefNum, name, JACK_DEFAULT_AUDIO_TYPE, (JackPortFlags)port_flags, fEngineControl->fBufferSize)) == NO_PORT) {
<a name="l00112"></a>00112 <a class="code" href="group__ServerControl.html#gac6448626e0b75fc6d9da1ccbdca0355e">jack_error</a>(<span class="stringliteral">"driver: cannot register port for %s"</span>, name);
<a name="l00113"></a>00113 <span class="keywordflow">return</span> -1;
<a name="l00114"></a>00114 }
<a name="l00115"></a>00115 port = fGraphManager->GetPort(port_index);
<a name="l00116"></a>00116 port->SetAlias(alias);
<a name="l00117"></a>00117 <span class="comment">// Add one buffer more latency if "async" mode is used...</span>
<a name="l00118"></a>00118 range.<a class="code" href="struct__jack__latency__range.html#ab357b9064e2793e29755f5a6b550c3f2">min</a> = range.<a class="code" href="struct__jack__latency__range.html#a27a00059e59b8f7790d0479f8748a68f">max</a> = (alsa_driver->frames_per_cycle * (alsa_driver->user_nperiods - 1)) +
<a name="l00119"></a>00119 ((fEngineControl->fSyncMode) ? 0 : fEngineControl->fBufferSize) + alsa_driver->playback_frame_latency;
<a name="l00120"></a>00120
<a name="l00121"></a>00121 port->SetLatencyRange(JackPlaybackLatency, &range);
<a name="l00122"></a>00122 fPlaybackPortList[i] = port_index;
<a name="l00123"></a>00123 <a class="code" href="group__ServerControl.html#ga35f69faaee3bb9b958ed8c9a5f62246c">jack_log</a>(<span class="stringliteral">"JackAlsaDriver::Attach fPlaybackPortList[i] %ld "</span>, port_index);
<a name="l00124"></a>00124
<a name="l00125"></a>00125 <span class="comment">// Monitor ports</span>
<a name="l00126"></a>00126 <span class="keywordflow">if</span> (fWithMonitorPorts) {
<a name="l00127"></a>00127 <a class="code" href="group__ServerControl.html#ga35f69faaee3bb9b958ed8c9a5f62246c">jack_log</a>(<span class="stringliteral">"Create monitor port"</span>);
<a name="l00128"></a>00128 snprintf(name, <span class="keyword">sizeof</span>(name) - 1, <span class="stringliteral">"%s:monitor_%d"</span>, fClientControl.fName, i + 1);
<a name="l00129"></a>00129 <span class="keywordflow">if</span> ((port_index = fGraphManager->AllocatePort(fClientControl.fRefNum, name, JACK_DEFAULT_AUDIO_TYPE, MonitorDriverFlags, fEngineControl->fBufferSize)) == NO_PORT) {
<a name="l00130"></a>00130 <a class="code" href="group__ServerControl.html#gac6448626e0b75fc6d9da1ccbdca0355e">jack_error</a> (<span class="stringliteral">"ALSA: cannot register monitor port for %s"</span>, name);
<a name="l00131"></a>00131 } <span class="keywordflow">else</span> {
<a name="l00132"></a>00132 port = fGraphManager->GetPort(port_index);
<a name="l00133"></a>00133 range.<a class="code" href="struct__jack__latency__range.html#ab357b9064e2793e29755f5a6b550c3f2">min</a> = range.<a class="code" href="struct__jack__latency__range.html#a27a00059e59b8f7790d0479f8748a68f">max</a> = alsa_driver->frames_per_cycle;
<a name="l00134"></a>00134 port->SetLatencyRange(JackCaptureLatency, &range);
<a name="l00135"></a>00135 fMonitorPortList[i] = port_index;
<a name="l00136"></a>00136 }
<a name="l00137"></a>00137 }
<a name="l00138"></a>00138 }
<a name="l00139"></a>00139
<a name="l00140"></a>00140 <span class="keywordflow">if</span> (alsa_driver->midi) {
<a name="l00141"></a>00141 <span class="keywordtype">int</span> err = (alsa_driver->midi->attach)(alsa_driver->midi);
<a name="l00142"></a>00142 <span class="keywordflow">if</span> (err)
<a name="l00143"></a>00143 <a class="code" href="group__ServerControl.html#gac6448626e0b75fc6d9da1ccbdca0355e">jack_error</a> (<span class="stringliteral">"ALSA: cannot attach MIDI: %d"</span>, err);
<a name="l00144"></a>00144 }
<a name="l00145"></a>00145
<a name="l00146"></a>00146 <span class="keywordflow">return</span> 0;
<a name="l00147"></a>00147 }
<a name="l00148"></a>00148
<a name="l00149"></a>00149 <span class="keywordtype">int</span> JackAlsaDriver::Detach()
<a name="l00150"></a>00150 {
<a name="l00151"></a>00151 <a class="code" href="struct__alsa__driver.html">alsa_driver_t</a>* alsa_driver = (<a class="code" href="struct__alsa__driver.html">alsa_driver_t</a>*)fDriver;
<a name="l00152"></a>00152 <span class="keywordflow">if</span> (alsa_driver->midi)
<a name="l00153"></a>00153 (alsa_driver->midi->detach)(alsa_driver->midi);
<a name="l00154"></a>00154
<a name="l00155"></a>00155 <span class="keywordflow">return</span> JackAudioDriver::Detach();
<a name="l00156"></a>00156 }
<a name="l00157"></a>00157
<a name="l00158"></a>00158 <span class="keyword">static</span> <span class="keywordtype">char</span>* get_control_device_name(<span class="keyword">const</span> <span class="keywordtype">char</span> * device_name)
<a name="l00159"></a>00159 {
<a name="l00160"></a>00160 <span class="keywordtype">char</span> * ctl_name;
<a name="l00161"></a>00161 regex_t expression;
<a name="l00162"></a>00162
<a name="l00163"></a>00163 regcomp(&expression, <span class="stringliteral">"(plug)?hw:[0-9](,[0-9])?"</span>, REG_ICASE | REG_EXTENDED);
<a name="l00164"></a>00164
<a name="l00165"></a>00165 <span class="keywordflow">if</span> (!regexec(&expression, device_name, 0, NULL, 0)) {
<a name="l00166"></a>00166 <span class="comment">/* the user wants a hw or plughw device, the ctl name</span>
<a name="l00167"></a>00167 <span class="comment"> * should be hw:x where x is the card number */</span>
<a name="l00168"></a>00168
<a name="l00169"></a>00169 <span class="keywordtype">char</span> tmp[5];
<a name="l00170"></a>00170 strncpy(tmp, strstr(device_name, <span class="stringliteral">"hw"</span>), 4);
<a name="l00171"></a>00171 tmp[4] = <span class="charliteral">'\0'</span>;
<a name="l00172"></a>00172 <a class="code" href="group__ServerControl.html#ga21328fd378306e0da7270952196eb717">jack_info</a>(<span class="stringliteral">"control device %s"</span>,tmp);
<a name="l00173"></a>00173 ctl_name = strdup(tmp);
<a name="l00174"></a>00174 } <span class="keywordflow">else</span> {
<a name="l00175"></a>00175 ctl_name = strdup(device_name);
<a name="l00176"></a>00176 }
<a name="l00177"></a>00177
<a name="l00178"></a>00178 regfree(&expression);
<a name="l00179"></a>00179
<a name="l00180"></a>00180 <span class="keywordflow">if</span> (ctl_name == NULL) {
<a name="l00181"></a>00181 <a class="code" href="group__ServerControl.html#gac6448626e0b75fc6d9da1ccbdca0355e">jack_error</a>(<span class="stringliteral">"strdup(\"%s\") failed."</span>, ctl_name);
<a name="l00182"></a>00182 }
<a name="l00183"></a>00183
<a name="l00184"></a>00184 <span class="keywordflow">return</span> ctl_name;
<a name="l00185"></a>00185 }
<a name="l00186"></a>00186
<a name="l00187"></a>00187 <span class="keyword">static</span> <span class="keywordtype">int</span> card_to_num(<span class="keyword">const</span> <span class="keywordtype">char</span>* device)
<a name="l00188"></a>00188 {
<a name="l00189"></a>00189 <span class="keywordtype">int</span> err;
<a name="l00190"></a>00190 <span class="keywordtype">char</span>* ctl_name;
<a name="l00191"></a>00191 snd_ctl_card_info_t *card_info;
<a name="l00192"></a>00192 snd_ctl_t* ctl_handle;
<a name="l00193"></a>00193 <span class="keywordtype">int</span> i = -1;
<a name="l00194"></a>00194
<a name="l00195"></a>00195 snd_ctl_card_info_alloca (&card_info);
<a name="l00196"></a>00196
<a name="l00197"></a>00197 ctl_name = get_control_device_name(device);
<a name="l00198"></a>00198 <span class="keywordflow">if</span> (ctl_name == NULL) {
<a name="l00199"></a>00199 <a class="code" href="group__ServerControl.html#gac6448626e0b75fc6d9da1ccbdca0355e">jack_error</a>(<span class="stringliteral">"get_control_device_name() failed."</span>);
<a name="l00200"></a>00200 <span class="keywordflow">goto</span> fail;
<a name="l00201"></a>00201 }
<a name="l00202"></a>00202
<a name="l00203"></a>00203 <span class="keywordflow">if</span> ((err = snd_ctl_open (&ctl_handle, ctl_name, 0)) < 0) {
<a name="l00204"></a>00204 <a class="code" href="group__ServerControl.html#gac6448626e0b75fc6d9da1ccbdca0355e">jack_error</a> (<span class="stringliteral">"control open \"%s\" (%s)"</span>, ctl_name,
<a name="l00205"></a>00205 snd_strerror(err));
<a name="l00206"></a>00206 <span class="keywordflow">goto</span> free;
<a name="l00207"></a>00207 }
<a name="l00208"></a>00208
<a name="l00209"></a>00209 <span class="keywordflow">if</span> ((err = snd_ctl_card_info(ctl_handle, card_info)) < 0) {
<a name="l00210"></a>00210 <a class="code" href="group__ServerControl.html#gac6448626e0b75fc6d9da1ccbdca0355e">jack_error</a> (<span class="stringliteral">"control hardware info \"%s\" (%s)"</span>,
<a name="l00211"></a>00211 device, snd_strerror (err));
<a name="l00212"></a>00212 <span class="keywordflow">goto</span> close;
<a name="l00213"></a>00213 }
<a name="l00214"></a>00214
<a name="l00215"></a>00215 i = snd_ctl_card_info_get_card(card_info);
<a name="l00216"></a>00216
<a name="l00217"></a>00217 close:
<a name="l00218"></a>00218 snd_ctl_close(ctl_handle);
<a name="l00219"></a>00219
<a name="l00220"></a>00220 free:
<a name="l00221"></a>00221 free(ctl_name);
<a name="l00222"></a>00222
<a name="l00223"></a>00223 fail:
<a name="l00224"></a>00224 <span class="keywordflow">return</span> i;
<a name="l00225"></a>00225 }
<a name="l00226"></a>00226
<a name="l00227"></a>00227 <span class="keywordtype">int</span> JackAlsaDriver::Open(jack_nframes_t nframes,
<a name="l00228"></a>00228 jack_nframes_t user_nperiods,
<a name="l00229"></a>00229 jack_nframes_t samplerate,
<a name="l00230"></a>00230 <span class="keywordtype">bool</span> hw_monitoring,
<a name="l00231"></a>00231 <span class="keywordtype">bool</span> hw_metering,
<a name="l00232"></a>00232 <span class="keywordtype">bool</span> capturing,
<a name="l00233"></a>00233 <span class="keywordtype">bool</span> playing,
<a name="l00234"></a>00234 DitherAlgorithm dither,
<a name="l00235"></a>00235 <span class="keywordtype">bool</span> soft_mode,
<a name="l00236"></a>00236 <span class="keywordtype">bool</span> monitor,
<a name="l00237"></a>00237 <span class="keywordtype">int</span> inchannels,
<a name="l00238"></a>00238 <span class="keywordtype">int</span> outchannels,
<a name="l00239"></a>00239 <span class="keywordtype">bool</span> shorts_first,
<a name="l00240"></a>00240 <span class="keyword">const</span> <span class="keywordtype">char</span>* capture_driver_name,
<a name="l00241"></a>00241 <span class="keyword">const</span> <span class="keywordtype">char</span>* playback_driver_name,
<a name="l00242"></a>00242 jack_nframes_t capture_latency,
<a name="l00243"></a>00243 jack_nframes_t playback_latency,
<a name="l00244"></a>00244 <span class="keyword">const</span> <span class="keywordtype">char</span>* midi_driver_name)
<a name="l00245"></a>00245 {
<a name="l00246"></a>00246 <span class="comment">// Generic JackAudioDriver Open</span>
<a name="l00247"></a>00247 <span class="keywordflow">if</span> (JackAudioDriver::Open(nframes, samplerate, capturing, playing,
<a name="l00248"></a>00248 inchannels, outchannels, monitor, capture_driver_name, playback_driver_name,
<a name="l00249"></a>00249 capture_latency, playback_latency) != 0) {
<a name="l00250"></a>00250 <span class="keywordflow">return</span> -1;
<a name="l00251"></a>00251 }
<a name="l00252"></a>00252
<a name="l00253"></a>00253 <a class="code" href="structalsa__midi__t.html">alsa_midi_t</a> *midi = 0;
<a name="l00254"></a>00254 <span class="keywordflow">if</span> (strcmp(midi_driver_name, <span class="stringliteral">"seq"</span>) == 0)
<a name="l00255"></a>00255 midi = alsa_seqmidi_new((jack_client_t*)<span class="keyword">this</span>, 0);
<a name="l00256"></a>00256 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (strcmp(midi_driver_name, <span class="stringliteral">"raw"</span>) == 0)
<a name="l00257"></a>00257 midi = alsa_rawmidi_new((jack_client_t*)<span class="keyword">this</span>);
<a name="l00258"></a>00258
<a name="l00259"></a>00259 <span class="keywordflow">if</span> (JackServerGlobals::on_device_acquire != NULL)
<a name="l00260"></a>00260 {
<a name="l00261"></a>00261 <span class="keywordtype">int</span> capture_card = card_to_num(capture_driver_name);
<a name="l00262"></a>00262 <span class="keywordtype">int</span> playback_card = card_to_num(playback_driver_name);
<a name="l00263"></a>00263 <span class="keywordtype">char</span> audio_name[32];
<a name="l00264"></a>00264
<a name="l00265"></a>00265 snprintf(audio_name, <span class="keyword">sizeof</span>(audio_name) - 1, <span class="stringliteral">"Audio%d"</span>, capture_card);
<a name="l00266"></a>00266 <span class="keywordflow">if</span> (!JackServerGlobals::on_device_acquire(audio_name)) {
<a name="l00267"></a>00267 <a class="code" href="group__ServerControl.html#gac6448626e0b75fc6d9da1ccbdca0355e">jack_error</a>(<span class="stringliteral">"Audio device %s cannot be acquired, trying to open it anyway..."</span>, capture_driver_name);
<a name="l00268"></a>00268 }
<a name="l00269"></a>00269
<a name="l00270"></a>00270 <span class="keywordflow">if</span> (playback_card != capture_card) {
<a name="l00271"></a>00271 snprintf(audio_name, <span class="keyword">sizeof</span>(audio_name) - 1, <span class="stringliteral">"Audio%d"</span>, playback_card);
<a name="l00272"></a>00272 <span class="keywordflow">if</span> (!JackServerGlobals::on_device_acquire(audio_name)) {
<a name="l00273"></a>00273 <a class="code" href="group__ServerControl.html#gac6448626e0b75fc6d9da1ccbdca0355e">jack_error</a>(<span class="stringliteral">"Audio device %s cannot be acquired, trying to open it anyway..."</span>, playback_driver_name);
<a name="l00274"></a>00274 }
<a name="l00275"></a>00275 }
<a name="l00276"></a>00276 }
<a name="l00277"></a>00277
<a name="l00278"></a>00278 fDriver = alsa_driver_new (<span class="stringliteral">"alsa_pcm"</span>, (<span class="keywordtype">char</span>*)playback_driver_name, (<span class="keywordtype">char</span>*)capture_driver_name,
<a name="l00279"></a>00279 NULL,
<a name="l00280"></a>00280 nframes,
<a name="l00281"></a>00281 user_nperiods,
<a name="l00282"></a>00282 samplerate,
<a name="l00283"></a>00283 hw_monitoring,
<a name="l00284"></a>00284 hw_metering,
<a name="l00285"></a>00285 capturing,
<a name="l00286"></a>00286 playing,
<a name="l00287"></a>00287 dither,
<a name="l00288"></a>00288 soft_mode,
<a name="l00289"></a>00289 monitor,
<a name="l00290"></a>00290 inchannels,
<a name="l00291"></a>00291 outchannels,
<a name="l00292"></a>00292 shorts_first,
<a name="l00293"></a>00293 capture_latency,
<a name="l00294"></a>00294 playback_latency,
<a name="l00295"></a>00295 midi);
<a name="l00296"></a>00296 <span class="keywordflow">if</span> (fDriver) {
<a name="l00297"></a>00297 <span class="comment">// ALSA driver may have changed the in/out values</span>
<a name="l00298"></a>00298 fCaptureChannels = ((<a class="code" href="struct__alsa__driver.html">alsa_driver_t</a> *)fDriver)->capture_nchannels;
<a name="l00299"></a>00299 fPlaybackChannels = ((<a class="code" href="struct__alsa__driver.html">alsa_driver_t</a> *)fDriver)->playback_nchannels;
<a name="l00300"></a>00300 <span class="keywordflow">return</span> 0;
<a name="l00301"></a>00301 } <span class="keywordflow">else</span> {
<a name="l00302"></a>00302 JackAudioDriver::Close();
<a name="l00303"></a>00303 <span class="keywordflow">return</span> -1;
<a name="l00304"></a>00304 }
<a name="l00305"></a>00305 }
<a name="l00306"></a>00306
<a name="l00307"></a>00307 <span class="keywordtype">int</span> JackAlsaDriver::Close()
<a name="l00308"></a>00308 {
<a name="l00309"></a>00309 <span class="comment">// Generic audio driver close</span>
<a name="l00310"></a>00310 <span class="keywordtype">int</span> res = JackAudioDriver::Close();
<a name="l00311"></a>00311
<a name="l00312"></a>00312 alsa_driver_delete((<a class="code" href="struct__alsa__driver.html">alsa_driver_t</a>*)fDriver);
<a name="l00313"></a>00313
<a name="l00314"></a>00314 <span class="keywordflow">if</span> (JackServerGlobals::on_device_release != NULL)
<a name="l00315"></a>00315 {
<a name="l00316"></a>00316 <span class="keywordtype">char</span> audio_name[32];
<a name="l00317"></a>00317 <span class="keywordtype">int</span> capture_card = card_to_num(fCaptureDriverName);
<a name="l00318"></a>00318 <span class="keywordflow">if</span> (capture_card >= 0) {
<a name="l00319"></a>00319 snprintf(audio_name, <span class="keyword">sizeof</span>(audio_name) - 1, <span class="stringliteral">"Audio%d"</span>, capture_card);
<a name="l00320"></a>00320 JackServerGlobals::on_device_release(audio_name);
<a name="l00321"></a>00321 }
<a name="l00322"></a>00322
<a name="l00323"></a>00323 <span class="keywordtype">int</span> playback_card = card_to_num(fPlaybackDriverName);
<a name="l00324"></a>00324 <span class="keywordflow">if</span> (playback_card >= 0 && playback_card != capture_card) {
<a name="l00325"></a>00325 snprintf(audio_name, <span class="keyword">sizeof</span>(audio_name) - 1, <span class="stringliteral">"Audio%d"</span>, playback_card);
<a name="l00326"></a>00326 JackServerGlobals::on_device_release(audio_name);
<a name="l00327"></a>00327 }
<a name="l00328"></a>00328 }
<a name="l00329"></a>00329
<a name="l00330"></a>00330 <span class="keywordflow">return</span> res;
<a name="l00331"></a>00331 }
<a name="l00332"></a>00332
<a name="l00333"></a>00333 <span class="keywordtype">int</span> JackAlsaDriver::Start()
<a name="l00334"></a>00334 {
<a name="l00335"></a>00335 <span class="keywordtype">int</span> res = JackAudioDriver::Start();
<a name="l00336"></a>00336 <span class="keywordflow">if</span> (res >= 0) {
<a name="l00337"></a>00337 res = alsa_driver_start((<a class="code" href="struct__alsa__driver.html">alsa_driver_t</a> *)fDriver);
<a name="l00338"></a>00338 <span class="keywordflow">if</span> (res < 0) {
<a name="l00339"></a>00339 JackAudioDriver::Stop();
<a name="l00340"></a>00340 }
<a name="l00341"></a>00341 }
<a name="l00342"></a>00342 <span class="keywordflow">return</span> res;
<a name="l00343"></a>00343 }
<a name="l00344"></a>00344
<a name="l00345"></a>00345 <span class="keywordtype">int</span> JackAlsaDriver::Stop()
<a name="l00346"></a>00346 {
<a name="l00347"></a>00347 <span class="keywordtype">int</span> res = alsa_driver_stop((<a class="code" href="struct__alsa__driver.html">alsa_driver_t</a> *)fDriver);
<a name="l00348"></a>00348 <span class="keywordflow">if</span> (JackAudioDriver::Stop() < 0) {
<a name="l00349"></a>00349 res = -1;
<a name="l00350"></a>00350 }
<a name="l00351"></a>00351 <span class="keywordflow">return</span> res;
<a name="l00352"></a>00352 }
<a name="l00353"></a>00353
<a name="l00354"></a>00354 <span class="keywordtype">int</span> JackAlsaDriver::Read()
<a name="l00355"></a>00355 {
<a name="l00356"></a>00356 <span class="comment">/* Taken from alsa_driver_run_cycle */</span>
<a name="l00357"></a>00357 <span class="keywordtype">int</span> wait_status;
<a name="l00358"></a>00358 jack_nframes_t nframes;
<a name="l00359"></a>00359 fDelayedUsecs = 0.f;
<a name="l00360"></a>00360
<a name="l00361"></a>00361 retry:
<a name="l00362"></a>00362
<a name="l00363"></a>00363 nframes = alsa_driver_wait((<a class="code" href="struct__alsa__driver.html">alsa_driver_t</a> *)fDriver, -1, &wait_status, &fDelayedUsecs);
<a name="l00364"></a>00364
<a name="l00365"></a>00365 <span class="keywordflow">if</span> (wait_status < 0)
<a name="l00366"></a>00366 <span class="keywordflow">return</span> -1; <span class="comment">/* driver failed */</span>
<a name="l00367"></a>00367
<a name="l00368"></a>00368 <span class="keywordflow">if</span> (nframes == 0) {
<a name="l00369"></a>00369 <span class="comment">/* we detected an xrun and restarted: notify</span>
<a name="l00370"></a>00370 <span class="comment"> * clients about the delay.</span>
<a name="l00371"></a>00371 <span class="comment"> */</span>
<a name="l00372"></a>00372 <a class="code" href="group__ServerControl.html#ga35f69faaee3bb9b958ed8c9a5f62246c">jack_log</a>(<span class="stringliteral">"ALSA XRun wait_status = %d"</span>, wait_status);
<a name="l00373"></a>00373 NotifyXRun(fBeginDateUst, fDelayedUsecs);
<a name="l00374"></a>00374 <span class="keywordflow">goto</span> retry; <span class="comment">/* recoverable error*/</span>
<a name="l00375"></a>00375 }
<a name="l00376"></a>00376
<a name="l00377"></a>00377 <span class="keywordflow">if</span> (nframes != fEngineControl->fBufferSize)
<a name="l00378"></a>00378 <a class="code" href="group__ServerControl.html#ga35f69faaee3bb9b958ed8c9a5f62246c">jack_log</a>(<span class="stringliteral">"JackAlsaDriver::Read warning fBufferSize = %ld nframes = %ld"</span>, fEngineControl->fBufferSize, nframes);
<a name="l00379"></a>00379
<a name="l00380"></a>00380 <span class="comment">// Has to be done before read</span>
<a name="l00381"></a>00381 JackDriver::CycleIncTime();
<a name="l00382"></a>00382
<a name="l00383"></a>00383 <span class="keywordflow">return</span> alsa_driver_read((<a class="code" href="struct__alsa__driver.html">alsa_driver_t</a> *)fDriver, fEngineControl->fBufferSize);
<a name="l00384"></a>00384 }
<a name="l00385"></a>00385
<a name="l00386"></a>00386 <span class="keywordtype">int</span> JackAlsaDriver::Write()
<a name="l00387"></a>00387 {
<a name="l00388"></a>00388 <span class="keywordflow">return</span> alsa_driver_write((<a class="code" href="struct__alsa__driver.html">alsa_driver_t</a> *)fDriver, fEngineControl->fBufferSize);
<a name="l00389"></a>00389 }
<a name="l00390"></a>00390
<a name="l00391"></a>00391 <span class="keywordtype">void</span> JackAlsaDriver::ReadInputAux(jack_nframes_t orig_nframes, snd_pcm_sframes_t contiguous, snd_pcm_sframes_t nread)
<a name="l00392"></a>00392 {
<a name="l00393"></a>00393 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> chn = 0; chn < fCaptureChannels; chn++) {
<a name="l00394"></a>00394 <span class="keywordflow">if</span> (fGraphManager->GetConnectionsNum(fCapturePortList[chn]) > 0) {
<a name="l00395"></a>00395 jack_default_audio_sample_t* buf = (jack_default_audio_sample_t*)fGraphManager->GetBuffer(fCapturePortList[chn], orig_nframes);
<a name="l00396"></a>00396 alsa_driver_read_from_channel((<a class="code" href="struct__alsa__driver.html">alsa_driver_t</a> *)fDriver, chn, buf + nread, contiguous);
<a name="l00397"></a>00397 }
<a name="l00398"></a>00398 }
<a name="l00399"></a>00399 }
<a name="l00400"></a>00400
<a name="l00401"></a>00401 <span class="keywordtype">void</span> JackAlsaDriver::MonitorInputAux()
<a name="l00402"></a>00402 {
<a name="l00403"></a>00403 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> chn = 0; chn < fCaptureChannels; chn++) {
<a name="l00404"></a>00404 JackPort* port = fGraphManager->GetPort(fCapturePortList[chn]);
<a name="l00405"></a>00405 <span class="keywordflow">if</span> (port->MonitoringInput()) {
<a name="l00406"></a>00406 ((<a class="code" href="struct__alsa__driver.html">alsa_driver_t</a> *)fDriver)->input_monitor_mask |= (1 << chn);
<a name="l00407"></a>00407 }
<a name="l00408"></a>00408 }
<a name="l00409"></a>00409 }
<a name="l00410"></a>00410
<a name="l00411"></a>00411 <span class="keywordtype">void</span> JackAlsaDriver::ClearOutputAux()
<a name="l00412"></a>00412 {
<a name="l00413"></a>00413 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> chn = 0; chn < fPlaybackChannels; chn++) {
<a name="l00414"></a>00414 jack_default_audio_sample_t* buf =
<a name="l00415"></a>00415 (jack_default_audio_sample_t*)fGraphManager->GetBuffer(fPlaybackPortList[chn], fEngineControl->fBufferSize);
<a name="l00416"></a>00416 memset(buf, 0, <span class="keyword">sizeof</span> (jack_default_audio_sample_t) * fEngineControl->fBufferSize);
<a name="l00417"></a>00417 }
<a name="l00418"></a>00418 }
<a name="l00419"></a>00419
<a name="l00420"></a>00420 <span class="keywordtype">void</span> JackAlsaDriver::SetTimetAux(jack_time_t time)
<a name="l00421"></a>00421 {
<a name="l00422"></a>00422 fBeginDateUst = time;
<a name="l00423"></a>00423 }
<a name="l00424"></a>00424
<a name="l00425"></a>00425 <span class="keywordtype">void</span> JackAlsaDriver::WriteOutputAux(jack_nframes_t orig_nframes, snd_pcm_sframes_t contiguous, snd_pcm_sframes_t nwritten)
<a name="l00426"></a>00426 {
<a name="l00427"></a>00427 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> chn = 0; chn < fPlaybackChannels; chn++) {
<a name="l00428"></a>00428 <span class="comment">// Output ports</span>
<a name="l00429"></a>00429 <span class="keywordflow">if</span> (fGraphManager->GetConnectionsNum(fPlaybackPortList[chn]) > 0) {
<a name="l00430"></a>00430 jack_default_audio_sample_t* buf = (jack_default_audio_sample_t*)fGraphManager->GetBuffer(fPlaybackPortList[chn], orig_nframes);
<a name="l00431"></a>00431 alsa_driver_write_to_channel(((<a class="code" href="struct__alsa__driver.html">alsa_driver_t</a> *)fDriver), chn, buf + nwritten, contiguous);
<a name="l00432"></a>00432 <span class="comment">// Monitor ports</span>
<a name="l00433"></a>00433 <span class="keywordflow">if</span> (fWithMonitorPorts && fGraphManager->GetConnectionsNum(fMonitorPortList[chn]) > 0) {
<a name="l00434"></a>00434 jack_default_audio_sample_t* monbuf = (jack_default_audio_sample_t*)fGraphManager->GetBuffer(fMonitorPortList[chn], orig_nframes);
<a name="l00435"></a>00435 memcpy(monbuf + nwritten, buf + nwritten, contiguous * <span class="keyword">sizeof</span>(jack_default_audio_sample_t));
<a name="l00436"></a>00436 }
<a name="l00437"></a>00437 }
<a name="l00438"></a>00438 }
<a name="l00439"></a>00439 }
<a name="l00440"></a>00440
<a name="l00441"></a>00441 <span class="keywordtype">int</span> JackAlsaDriver::is_realtime()<span class="keyword"> const</span>
<a name="l00442"></a>00442 <span class="keyword"></span>{
<a name="l00443"></a>00443 <span class="keywordflow">return</span> fEngineControl->fRealTime;
<a name="l00444"></a>00444 }
<a name="l00445"></a>00445
<a name="l00446"></a>00446 <span class="keywordtype">int</span> JackAlsaDriver::create_thread(pthread_t *thread, <span class="keywordtype">int</span> priority, <span class="keywordtype">int</span> realtime, <span class="keywordtype">void</span> *(*start_routine)(<span class="keywordtype">void</span>*), <span class="keywordtype">void</span> *arg)
<a name="l00447"></a>00447 {
<a name="l00448"></a>00448 <span class="keywordflow">return</span> JackPosixThread::StartImp(thread, priority, realtime, start_routine, arg);
<a name="l00449"></a>00449 }
<a name="l00450"></a>00450
<a name="l00451"></a>00451 jack_port_id_t JackAlsaDriver::port_register(<span class="keyword">const</span> <span class="keywordtype">char</span> *port_name, <span class="keyword">const</span> <span class="keywordtype">char</span> *port_type, <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> flags, <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> buffer_size)
<a name="l00452"></a>00452 {
<a name="l00453"></a>00453 jack_port_id_t port_index;
<a name="l00454"></a>00454 <span class="keywordtype">int</span> res = fEngine->PortRegister(fClientControl.fRefNum, port_name, port_type, flags, buffer_size, &port_index);
<a name="l00455"></a>00455 <span class="keywordflow">return</span> (res == 0) ? port_index : 0;
<a name="l00456"></a>00456 }
<a name="l00457"></a>00457
<a name="l00458"></a>00458 <span class="keywordtype">int</span> JackAlsaDriver::port_unregister(jack_port_id_t port_index)
<a name="l00459"></a>00459 {
<a name="l00460"></a>00460 <span class="keywordflow">return</span> fEngine->PortUnRegister(fClientControl.fRefNum, port_index);
<a name="l00461"></a>00461 }
<a name="l00462"></a>00462
<a name="l00463"></a>00463 <span class="keywordtype">void</span>* JackAlsaDriver::port_get_buffer(<span class="keywordtype">int</span> port, jack_nframes_t nframes)
<a name="l00464"></a>00464 {
<a name="l00465"></a>00465 <span class="keywordflow">return</span> fGraphManager->GetBuffer(port, nframes);
<a name="l00466"></a>00466 }
<a name="l00467"></a>00467
<a name="l00468"></a>00468 <span class="keywordtype">int</span> JackAlsaDriver::port_set_alias(<span class="keywordtype">int</span> port, <span class="keyword">const</span> <span class="keywordtype">char</span>* name)
<a name="l00469"></a>00469 {
<a name="l00470"></a>00470 <span class="keywordflow">return</span> fGraphManager->GetPort(port)->SetAlias(name);
<a name="l00471"></a>00471 }
<a name="l00472"></a>00472
<a name="l00473"></a>00473 jack_nframes_t JackAlsaDriver::get_sample_rate()<span class="keyword"> const</span>
<a name="l00474"></a>00474 <span class="keyword"></span>{
<a name="l00475"></a>00475 <span class="keywordflow">return</span> fEngineControl->fSampleRate;
<a name="l00476"></a>00476 }
<a name="l00477"></a>00477
<a name="l00478"></a>00478 jack_nframes_t JackAlsaDriver::frame_time()<span class="keyword"> const</span>
<a name="l00479"></a>00479 <span class="keyword"></span>{
<a name="l00480"></a>00480 JackTimer timer;
<a name="l00481"></a>00481 fEngineControl->ReadFrameTime(&timer);
<a name="l00482"></a>00482 <span class="keywordflow">return</span> timer.Time2Frames(GetMicroSeconds(), fEngineControl->fBufferSize);
<a name="l00483"></a>00483 }
<a name="l00484"></a>00484
<a name="l00485"></a>00485 jack_nframes_t JackAlsaDriver::last_frame_time()<span class="keyword"> const</span>
<a name="l00486"></a>00486 <span class="keyword"></span>{
<a name="l00487"></a>00487 JackTimer timer;
<a name="l00488"></a>00488 fEngineControl->ReadFrameTime(&timer);
<a name="l00489"></a>00489 <span class="keywordflow">return</span> timer.CurFrame();
<a name="l00490"></a>00490 }
<a name="l00491"></a>00491
<a name="l00492"></a>00492 } <span class="comment">// end of namespace</span>
<a name="l00493"></a>00493
<a name="l00494"></a>00494
<a name="l00495"></a>00495 <span class="preprocessor">#ifdef __cplusplus</span>
<a name="l00496"></a>00496 <span class="preprocessor"></span><span class="keyword">extern</span> <span class="stringliteral">"C"</span>
<a name="l00497"></a>00497 {
<a name="l00498"></a>00498 <span class="preprocessor">#endif</span>
<a name="l00499"></a>00499 <span class="preprocessor"></span>
<a name="l00500"></a>00500 <span class="keyword">static</span>
<a name="l00501"></a>00501 <span class="keywordtype">void</span>
<a name="l00502"></a>00502 fill_device(
<a name="l00503"></a>00503 <a class="code" href="structjack__driver__param__constraint__desc__t.html">jack_driver_param_constraint_desc_t</a> ** constraint_ptr_ptr,
<a name="l00504"></a>00504 uint32_t * array_size_ptr,
<a name="l00505"></a>00505 <span class="keyword">const</span> <span class="keywordtype">char</span> * device_id,
<a name="l00506"></a>00506 <span class="keyword">const</span> <span class="keywordtype">char</span> * device_description)
<a name="l00507"></a>00507 {
<a name="l00508"></a>00508 <a class="code" href="structjack__driver__param__value__enum__t.html">jack_driver_param_value_enum_t</a> * possible_value_ptr;
<a name="l00509"></a>00509
<a name="l00510"></a>00510 <span class="comment">//jack_info("%6s - %s", device_id, device_description);</span>
<a name="l00511"></a>00511
<a name="l00512"></a>00512 <span class="keywordflow">if</span> (*constraint_ptr_ptr == NULL)
<a name="l00513"></a>00513 {
<a name="l00514"></a>00514 *constraint_ptr_ptr = (<a class="code" href="structjack__driver__param__constraint__desc__t.html">jack_driver_param_constraint_desc_t</a> *)calloc(1, <span class="keyword">sizeof</span>(<a class="code" href="structjack__driver__param__value__enum__t.html">jack_driver_param_value_enum_t</a>));
<a name="l00515"></a>00515 *array_size_ptr = 0;
<a name="l00516"></a>00516 }
<a name="l00517"></a>00517
<a name="l00518"></a>00518 <span class="keywordflow">if</span> ((*constraint_ptr_ptr)->constraint.enumeration.count == *array_size_ptr)
<a name="l00519"></a>00519 {
<a name="l00520"></a>00520 *array_size_ptr += 10;
<a name="l00521"></a>00521 (*constraint_ptr_ptr)->constraint.<a class="code" href="structjack__driver__param__constraint__desc__t.html#a67423626dbe6bbe914e79c187677cec6">enumeration</a>.possible_values_array =
<a name="l00522"></a>00522 (<a class="code" href="structjack__driver__param__value__enum__t.html">jack_driver_param_value_enum_t</a> *)realloc(
<a name="l00523"></a>00523 (*constraint_ptr_ptr)->constraint.enumeration.possible_values_array,
<a name="l00524"></a>00524 <span class="keyword">sizeof</span>(<a class="code" href="structjack__driver__param__value__enum__t.html">jack_driver_param_value_enum_t</a>) * *array_size_ptr);
<a name="l00525"></a>00525 }
<a name="l00526"></a>00526
<a name="l00527"></a>00527 possible_value_ptr = (*constraint_ptr_ptr)->constraint.enumeration.possible_values_array + (*constraint_ptr_ptr)->constraint.enumeration.count;
<a name="l00528"></a>00528 (*constraint_ptr_ptr)->constraint.enumeration.count++;
<a name="l00529"></a>00529 strcpy(possible_value_ptr->value.str, device_id);
<a name="l00530"></a>00530 strcpy(possible_value_ptr-><a class="code" href="structjack__driver__param__value__enum__t.html#a1344185a4127f78bdfc9fa34c7e04ee3">short_desc</a>, device_description);
<a name="l00531"></a>00531 }
<a name="l00532"></a>00532
<a name="l00533"></a>00533 <span class="keyword">static</span>
<a name="l00534"></a>00534 <a class="code" href="structjack__driver__param__constraint__desc__t.html">jack_driver_param_constraint_desc_t</a> *
<a name="l00535"></a>00535 enum_alsa_devices()
<a name="l00536"></a>00536 {
<a name="l00537"></a>00537 snd_ctl_t * handle;
<a name="l00538"></a>00538 snd_ctl_card_info_t * info;
<a name="l00539"></a>00539 snd_pcm_info_t * pcminfo_capture;
<a name="l00540"></a>00540 snd_pcm_info_t * pcminfo_playback;
<a name="l00541"></a>00541 <span class="keywordtype">int</span> card_no = -1;
<a name="l00542"></a>00542 <span class="keywordtype">char</span> card_id[JACK_DRIVER_PARAM_STRING_MAX + 1];
<a name="l00543"></a>00543 <span class="keywordtype">char</span> device_id[JACK_DRIVER_PARAM_STRING_MAX + 1];
<a name="l00544"></a>00544 <span class="keywordtype">char</span> description[64];
<a name="l00545"></a>00545 <span class="keywordtype">int</span> device_no;
<a name="l00546"></a>00546 <span class="keywordtype">bool</span> has_capture;
<a name="l00547"></a>00547 <span class="keywordtype">bool</span> has_playback;
<a name="l00548"></a>00548 <a class="code" href="structjack__driver__param__constraint__desc__t.html">jack_driver_param_constraint_desc_t</a> * constraint_ptr;
<a name="l00549"></a>00549 uint32_t array_size = 0;
<a name="l00550"></a>00550
<a name="l00551"></a>00551 snd_ctl_card_info_alloca(&info);
<a name="l00552"></a>00552 snd_pcm_info_alloca(&pcminfo_capture);
<a name="l00553"></a>00553 snd_pcm_info_alloca(&pcminfo_playback);
<a name="l00554"></a>00554
<a name="l00555"></a>00555 constraint_ptr = NULL;
<a name="l00556"></a>00556
<a name="l00557"></a>00557 <span class="keywordflow">while</span>(snd_card_next(&card_no) >= 0 && card_no >= 0)
<a name="l00558"></a>00558 {
<a name="l00559"></a>00559 sprintf(card_id, <span class="stringliteral">"hw:%d"</span>, card_no);
<a name="l00560"></a>00560
<a name="l00561"></a>00561 <span class="keywordflow">if</span> (snd_ctl_open(&handle, card_id, 0) >= 0 &&
<a name="l00562"></a>00562 snd_ctl_card_info(handle, info) >= 0)
<a name="l00563"></a>00563 {
<a name="l00564"></a>00564 fill_device(&constraint_ptr, &array_size, card_id, snd_ctl_card_info_get_name(info));
<a name="l00565"></a>00565
<a name="l00566"></a>00566 device_no = -1;
<a name="l00567"></a>00567
<a name="l00568"></a>00568 <span class="keywordflow">while</span> (snd_ctl_pcm_next_device(handle, &device_no) >= 0 && device_no != -1)
<a name="l00569"></a>00569 {
<a name="l00570"></a>00570 sprintf(device_id, <span class="stringliteral">"%s,%d"</span>, card_id, device_no);
<a name="l00571"></a>00571
<a name="l00572"></a>00572 snd_pcm_info_set_device(pcminfo_capture, device_no);
<a name="l00573"></a>00573 snd_pcm_info_set_subdevice(pcminfo_capture, 0);
<a name="l00574"></a>00574 snd_pcm_info_set_stream(pcminfo_capture, SND_PCM_STREAM_CAPTURE);
<a name="l00575"></a>00575 has_capture = snd_ctl_pcm_info(handle, pcminfo_capture) >= 0;
<a name="l00576"></a>00576
<a name="l00577"></a>00577 snd_pcm_info_set_device(pcminfo_playback, device_no);
<a name="l00578"></a>00578 snd_pcm_info_set_subdevice(pcminfo_playback, 0);
<a name="l00579"></a>00579 snd_pcm_info_set_stream(pcminfo_playback, SND_PCM_STREAM_PLAYBACK);
<a name="l00580"></a>00580 has_playback = snd_ctl_pcm_info(handle, pcminfo_playback) >= 0;
<a name="l00581"></a>00581
<a name="l00582"></a>00582 <span class="keywordflow">if</span> (has_capture && has_playback)
<a name="l00583"></a>00583 {
<a name="l00584"></a>00584 snprintf(description, <span class="keyword">sizeof</span>(description),<span class="stringliteral">"%s (duplex)"</span>, snd_pcm_info_get_name(pcminfo_capture));
<a name="l00585"></a>00585 }
<a name="l00586"></a>00586 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (has_capture)
<a name="l00587"></a>00587 {
<a name="l00588"></a>00588 snprintf(description, <span class="keyword">sizeof</span>(description),<span class="stringliteral">"%s (capture)"</span>, snd_pcm_info_get_name(pcminfo_capture));
<a name="l00589"></a>00589 }
<a name="l00590"></a>00590 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (has_playback)
<a name="l00591"></a>00591 {
<a name="l00592"></a>00592 snprintf(description, <span class="keyword">sizeof</span>(description),<span class="stringliteral">"%s (playback)"</span>, snd_pcm_info_get_name(pcminfo_playback));
<a name="l00593"></a>00593 }
<a name="l00594"></a>00594 <span class="keywordflow">else</span>
<a name="l00595"></a>00595 {
<a name="l00596"></a>00596 <span class="keywordflow">continue</span>;
<a name="l00597"></a>00597 }
<a name="l00598"></a>00598
<a name="l00599"></a>00599 fill_device(&constraint_ptr, &array_size, device_id, description);
<a name="l00600"></a>00600 }
<a name="l00601"></a>00601
<a name="l00602"></a>00602 snd_ctl_close(handle);
<a name="l00603"></a>00603 }
<a name="l00604"></a>00604 }
<a name="l00605"></a>00605
<a name="l00606"></a>00606 <span class="keywordflow">return</span> constraint_ptr;
<a name="l00607"></a>00607 }
<a name="l00608"></a>00608
<a name="l00609"></a>00609 <span class="keyword">static</span>
<a name="l00610"></a>00610 <a class="code" href="structjack__driver__param__constraint__desc__t.html">jack_driver_param_constraint_desc_t</a> *
<a name="l00611"></a>00611 get_midi_driver_constraint()
<a name="l00612"></a>00612 {
<a name="l00613"></a>00613 <a class="code" href="structjack__driver__param__constraint__desc__t.html">jack_driver_param_constraint_desc_t</a> * constraint_ptr;
<a name="l00614"></a>00614 <a class="code" href="structjack__driver__param__value__enum__t.html">jack_driver_param_value_enum_t</a> * possible_value_ptr;
<a name="l00615"></a>00615
<a name="l00616"></a>00616 <span class="comment">//jack_info("%6s - %s", device_id, device_description);</span>
<a name="l00617"></a>00617
<a name="l00618"></a>00618 constraint_ptr = (<a class="code" href="structjack__driver__param__constraint__desc__t.html">jack_driver_param_constraint_desc_t</a> *)calloc(1, <span class="keyword">sizeof</span>(<a class="code" href="structjack__driver__param__value__enum__t.html">jack_driver_param_value_enum_t</a>));
<a name="l00619"></a>00619 constraint_ptr-><a class="code" href="structjack__driver__param__constraint__desc__t.html#aedd94c67d95bdfbaafc4e90931804c2a">flags</a> = JACK_CONSTRAINT_FLAG_STRICT | JACK_CONSTRAINT_FLAG_FAKE_VALUE;
<a name="l00620"></a>00620
<a name="l00621"></a>00621 constraint_ptr->constraint.<a class="code" href="structjack__driver__param__constraint__desc__t.html#a67423626dbe6bbe914e79c187677cec6">enumeration</a>.possible_values_array = (<a class="code" href="structjack__driver__param__value__enum__t.html">jack_driver_param_value_enum_t</a> *)malloc(3 * <span class="keyword">sizeof</span>(<a class="code" href="structjack__driver__param__value__enum__t.html">jack_driver_param_value_enum_t</a>));
<a name="l00622"></a>00622 constraint_ptr->constraint.<a class="code" href="structjack__driver__param__constraint__desc__t.html#a67423626dbe6bbe914e79c187677cec6">enumeration</a>.count = 3;
<a name="l00623"></a>00623
<a name="l00624"></a>00624 possible_value_ptr = constraint_ptr->constraint.<a class="code" href="structjack__driver__param__constraint__desc__t.html#a67423626dbe6bbe914e79c187677cec6">enumeration</a>.possible_values_array;
<a name="l00625"></a>00625
<a name="l00626"></a>00626 strcpy(possible_value_ptr->value.str, <span class="stringliteral">"none"</span>);
<a name="l00627"></a>00627 strcpy(possible_value_ptr-><a class="code" href="structjack__driver__param__value__enum__t.html#a1344185a4127f78bdfc9fa34c7e04ee3">short_desc</a>, <span class="stringliteral">"no MIDI driver"</span>);
<a name="l00628"></a>00628
<a name="l00629"></a>00629 possible_value_ptr++;
<a name="l00630"></a>00630
<a name="l00631"></a>00631 strcpy(possible_value_ptr->value.str, <span class="stringliteral">"seq"</span>);
<a name="l00632"></a>00632 strcpy(possible_value_ptr-><a class="code" href="structjack__driver__param__value__enum__t.html#a1344185a4127f78bdfc9fa34c7e04ee3">short_desc</a>, <span class="stringliteral">"ALSA Sequencer driver"</span>);
<a name="l00633"></a>00633
<a name="l00634"></a>00634 possible_value_ptr++;
<a name="l00635"></a>00635
<a name="l00636"></a>00636 strcpy(possible_value_ptr->value.str, <span class="stringliteral">"raw"</span>);
<a name="l00637"></a>00637 strcpy(possible_value_ptr-><a class="code" href="structjack__driver__param__value__enum__t.html#a1344185a4127f78bdfc9fa34c7e04ee3">short_desc</a>, <span class="stringliteral">"ALSA RawMIDI driver"</span>);
<a name="l00638"></a>00638
<a name="l00639"></a>00639 <span class="keywordflow">return</span> constraint_ptr;
<a name="l00640"></a>00640 }
<a name="l00641"></a>00641
<a name="l00642"></a>00642 <span class="keyword">static</span>
<a name="l00643"></a>00643 <a class="code" href="structjack__driver__param__constraint__desc__t.html">jack_driver_param_constraint_desc_t</a> *
<a name="l00644"></a>00644 get_dither_constraint()
<a name="l00645"></a>00645 {
<a name="l00646"></a>00646 <a class="code" href="structjack__driver__param__constraint__desc__t.html">jack_driver_param_constraint_desc_t</a> * constraint_ptr;
<a name="l00647"></a>00647 <a class="code" href="structjack__driver__param__value__enum__t.html">jack_driver_param_value_enum_t</a> * possible_value_ptr;
<a name="l00648"></a>00648
<a name="l00649"></a>00649 <span class="comment">//jack_info("%6s - %s", device_id, device_description);</span>
<a name="l00650"></a>00650
<a name="l00651"></a>00651 constraint_ptr = (<a class="code" href="structjack__driver__param__constraint__desc__t.html">jack_driver_param_constraint_desc_t</a> *)calloc(1, <span class="keyword">sizeof</span>(<a class="code" href="structjack__driver__param__value__enum__t.html">jack_driver_param_value_enum_t</a>));
<a name="l00652"></a>00652 constraint_ptr-><a class="code" href="structjack__driver__param__constraint__desc__t.html#aedd94c67d95bdfbaafc4e90931804c2a">flags</a> = JACK_CONSTRAINT_FLAG_STRICT | JACK_CONSTRAINT_FLAG_FAKE_VALUE;
<a name="l00653"></a>00653
<a name="l00654"></a>00654 constraint_ptr->constraint.<a class="code" href="structjack__driver__param__constraint__desc__t.html#a67423626dbe6bbe914e79c187677cec6">enumeration</a>.possible_values_array = (<a class="code" href="structjack__driver__param__value__enum__t.html">jack_driver_param_value_enum_t</a> *)malloc(4 * <span class="keyword">sizeof</span>(<a class="code" href="structjack__driver__param__value__enum__t.html">jack_driver_param_value_enum_t</a>));
<a name="l00655"></a>00655 constraint_ptr->constraint.<a class="code" href="structjack__driver__param__constraint__desc__t.html#a67423626dbe6bbe914e79c187677cec6">enumeration</a>.count = 4;
<a name="l00656"></a>00656
<a name="l00657"></a>00657 possible_value_ptr = constraint_ptr->constraint.<a class="code" href="structjack__driver__param__constraint__desc__t.html#a67423626dbe6bbe914e79c187677cec6">enumeration</a>.possible_values_array;
<a name="l00658"></a>00658
<a name="l00659"></a>00659 possible_value_ptr->value.c = <span class="charliteral">'n'</span>;
<a name="l00660"></a>00660 strcpy(possible_value_ptr-><a class="code" href="structjack__driver__param__value__enum__t.html#a1344185a4127f78bdfc9fa34c7e04ee3">short_desc</a>, <span class="stringliteral">"none"</span>);
<a name="l00661"></a>00661
<a name="l00662"></a>00662 possible_value_ptr++;
<a name="l00663"></a>00663
<a name="l00664"></a>00664 possible_value_ptr->value.c = <span class="charliteral">'r'</span>;
<a name="l00665"></a>00665 strcpy(possible_value_ptr-><a class="code" href="structjack__driver__param__value__enum__t.html#a1344185a4127f78bdfc9fa34c7e04ee3">short_desc</a>, <span class="stringliteral">"rectangular"</span>);
<a name="l00666"></a>00666
<a name="l00667"></a>00667 possible_value_ptr++;
<a name="l00668"></a>00668
<a name="l00669"></a>00669 possible_value_ptr->value.c = <span class="charliteral">'s'</span>;
<a name="l00670"></a>00670 strcpy(possible_value_ptr-><a class="code" href="structjack__driver__param__value__enum__t.html#a1344185a4127f78bdfc9fa34c7e04ee3">short_desc</a>, <span class="stringliteral">"shaped"</span>);
<a name="l00671"></a>00671
<a name="l00672"></a>00672 possible_value_ptr++;
<a name="l00673"></a>00673
<a name="l00674"></a>00674 possible_value_ptr->value.c = <span class="charliteral">'t'</span>;
<a name="l00675"></a>00675 strcpy(possible_value_ptr-><a class="code" href="structjack__driver__param__value__enum__t.html#a1344185a4127f78bdfc9fa34c7e04ee3">short_desc</a>, <span class="stringliteral">"triangular"</span>);
<a name="l00676"></a>00676
<a name="l00677"></a>00677 <span class="keywordflow">return</span> constraint_ptr;
<a name="l00678"></a>00678 }
<a name="l00679"></a>00679
<a name="l00680"></a>00680 <span class="keyword">static</span> <span class="keywordtype">int</span>
<a name="l00681"></a>00681 dither_opt (<span class="keywordtype">char</span> c, DitherAlgorithm* dither)
<a name="l00682"></a>00682 {
<a name="l00683"></a>00683 <span class="keywordflow">switch</span> (c) {
<a name="l00684"></a>00684 <span class="keywordflow">case</span> <span class="charliteral">'-'</span>:
<a name="l00685"></a>00685 <span class="keywordflow">case</span> <span class="charliteral">'n'</span>:
<a name="l00686"></a>00686 *dither = None;
<a name="l00687"></a>00687 <span class="keywordflow">break</span>;
<a name="l00688"></a>00688
<a name="l00689"></a>00689 <span class="keywordflow">case</span> <span class="charliteral">'r'</span>:
<a name="l00690"></a>00690 *dither = Rectangular;
<a name="l00691"></a>00691 <span class="keywordflow">break</span>;
<a name="l00692"></a>00692
<a name="l00693"></a>00693 <span class="keywordflow">case</span> <span class="charliteral">'s'</span>:
<a name="l00694"></a>00694 *dither = Shaped;
<a name="l00695"></a>00695 <span class="keywordflow">break</span>;
<a name="l00696"></a>00696
<a name="l00697"></a>00697 <span class="keywordflow">case</span> <span class="charliteral">'t'</span>:
<a name="l00698"></a>00698 *dither = Triangular;
<a name="l00699"></a>00699 <span class="keywordflow">break</span>;
<a name="l00700"></a>00700
<a name="l00701"></a>00701 <span class="keywordflow">default</span>:
<a name="l00702"></a>00702 fprintf (stderr, <span class="stringliteral">"ALSA driver: illegal dithering mode %c\n"</span>, c);
<a name="l00703"></a>00703 <span class="keywordflow">return</span> -1;
<a name="l00704"></a>00704 }
<a name="l00705"></a>00705 <span class="keywordflow">return</span> 0;
<a name="l00706"></a>00706 }
<a name="l00707"></a>00707
<a name="l00708"></a>00708 SERVER_EXPORT <span class="keyword">const</span> <a class="code" href="structjack__driver__desc__t.html">jack_driver_desc_t</a>* driver_get_descriptor ()
<a name="l00709"></a>00709 {
<a name="l00710"></a>00710 <a class="code" href="structjack__driver__desc__t.html">jack_driver_desc_t</a> * desc;
<a name="l00711"></a>00711 <a class="code" href="structjack__driver__param__desc__t.html">jack_driver_param_desc_t</a> * params;
<a name="l00712"></a>00712 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i;
<a name="l00713"></a>00713
<a name="l00714"></a>00714 desc = (<a class="code" href="structjack__driver__desc__t.html">jack_driver_desc_t</a>*)calloc (1, <span class="keyword">sizeof</span> (<a class="code" href="structjack__driver__desc__t.html">jack_driver_desc_t</a>));
<a name="l00715"></a>00715
<a name="l00716"></a>00716 strcpy(desc-><a class="code" href="structjack__driver__desc__t.html#a42ee3aae5d4587330cb03879eacc760b">name</a>, <span class="stringliteral">"alsa"</span>); <span class="comment">// size MUST be less then JACK_DRIVER_NAME_MAX + 1</span>
<a name="l00717"></a>00717 strcpy(desc-><a class="code" href="structjack__driver__desc__t.html#ae4efd9a47ac036aee951241be0c45654">desc</a>, <span class="stringliteral">"Linux ALSA API based audio backend"</span>); <span class="comment">// size MUST be less then JACK_DRIVER_PARAM_DESC + 1</span>
<a name="l00718"></a>00718
<a name="l00719"></a>00719 desc-><a class="code" href="structjack__driver__desc__t.html#a2efc65ee5c526f37589ff715861227f5">nparams</a> = 18;
<a name="l00720"></a>00720 params = (<a class="code" href="structjack__driver__param__desc__t.html">jack_driver_param_desc_t</a>*)calloc (desc-><a class="code" href="structjack__driver__desc__t.html#a2efc65ee5c526f37589ff715861227f5">nparams</a>, sizeof (<a class="code" href="structjack__driver__param__desc__t.html">jack_driver_param_desc_t</a>));
<a name="l00721"></a>00721
<a name="l00722"></a>00722 i = 0;
<a name="l00723"></a>00723 strcpy (params[i].name, <span class="stringliteral">"capture"</span>);
<a name="l00724"></a>00724 params[i].<a class="code" href="structjack__driver__param__desc__t.html#a0d80d0f9092d4fdaba7a3e37f82f3313">character</a> = <span class="charliteral">'C'</span>;
<a name="l00725"></a>00725 params[i].<a class="code" href="structjack__driver__param__desc__t.html#a1f7d08207a0c3285329a0bc7a7e6c59e">type</a> = JackDriverParamString;
<a name="l00726"></a>00726 strcpy (params[i].value.str, <span class="stringliteral">"none"</span>);
<a name="l00727"></a>00727 strcpy (params[i].short_desc,
<a name="l00728"></a>00728 <span class="stringliteral">"Provide capture ports. Optionally set device"</span>);
<a name="l00729"></a>00729 strcpy (params[i].long_desc, params[i].short_desc);
<a name="l00730"></a>00730
<a name="l00731"></a>00731 i++;
<a name="l00732"></a>00732 strcpy (params[i].name, <span class="stringliteral">"playback"</span>);
<a name="l00733"></a>00733 params[i].<a class="code" href="structjack__driver__param__desc__t.html#a0d80d0f9092d4fdaba7a3e37f82f3313">character</a> = <span class="charliteral">'P'</span>;
<a name="l00734"></a>00734 params[i].<a class="code" href="structjack__driver__param__desc__t.html#a1f7d08207a0c3285329a0bc7a7e6c59e">type</a> = JackDriverParamString;
<a name="l00735"></a>00735 strcpy (params[i].value.str, <span class="stringliteral">"none"</span>);
<a name="l00736"></a>00736 strcpy (params[i].short_desc,
<a name="l00737"></a>00737 <span class="stringliteral">"Provide playback ports. Optionally set device"</span>);
<a name="l00738"></a>00738 strcpy (params[i].long_desc, params[i].short_desc);
<a name="l00739"></a>00739
<a name="l00740"></a>00740 i++;
<a name="l00741"></a>00741 strcpy (params[i].name, <span class="stringliteral">"device"</span>);
<a name="l00742"></a>00742 params[i].<a class="code" href="structjack__driver__param__desc__t.html#a0d80d0f9092d4fdaba7a3e37f82f3313">character</a> = <span class="charliteral">'d'</span>;
<a name="l00743"></a>00743 params[i].<a class="code" href="structjack__driver__param__desc__t.html#a1f7d08207a0c3285329a0bc7a7e6c59e">type</a> = JackDriverParamString;
<a name="l00744"></a>00744 strcpy (params[i].value.str, <span class="stringliteral">"hw:0"</span>);
<a name="l00745"></a>00745 strcpy (params[i].short_desc, <span class="stringliteral">"ALSA device name"</span>);
<a name="l00746"></a>00746 strcpy (params[i].long_desc, params[i].short_desc);
<a name="l00747"></a>00747 params[i].<a class="code" href="structjack__driver__param__desc__t.html#a41d19796d0b7342bd6ab2ecf3251f5d7">constraint</a> = enum_alsa_devices();
<a name="l00748"></a>00748
<a name="l00749"></a>00749 i++;
<a name="l00750"></a>00750 strcpy (params[i].name, <span class="stringliteral">"rate"</span>);
<a name="l00751"></a>00751 params[i].<a class="code" href="structjack__driver__param__desc__t.html#a0d80d0f9092d4fdaba7a3e37f82f3313">character</a> = <span class="charliteral">'r'</span>;
<a name="l00752"></a>00752 params[i].<a class="code" href="structjack__driver__param__desc__t.html#a1f7d08207a0c3285329a0bc7a7e6c59e">type</a> = JackDriverParamUInt;
<a name="l00753"></a>00753 params[i].<a class="code" href="structjack__driver__param__desc__t.html#a817eb04d0ccf7203345e55e608a7495f">value</a>.ui = 48000U;
<a name="l00754"></a>00754 strcpy (params[i].short_desc, <span class="stringliteral">"Sample rate"</span>);
<a name="l00755"></a>00755 strcpy (params[i].long_desc, params[i].short_desc);
<a name="l00756"></a>00756
<a name="l00757"></a>00757 i++;
<a name="l00758"></a>00758 strcpy (params[i].name, <span class="stringliteral">"period"</span>);
<a name="l00759"></a>00759 params[i].<a class="code" href="structjack__driver__param__desc__t.html#a0d80d0f9092d4fdaba7a3e37f82f3313">character</a> = <span class="charliteral">'p'</span>;
<a name="l00760"></a>00760 params[i].<a class="code" href="structjack__driver__param__desc__t.html#a1f7d08207a0c3285329a0bc7a7e6c59e">type</a> = JackDriverParamUInt;
<a name="l00761"></a>00761 params[i].<a class="code" href="structjack__driver__param__desc__t.html#a817eb04d0ccf7203345e55e608a7495f">value</a>.ui = 1024U;
<a name="l00762"></a>00762 strcpy (params[i].short_desc, <span class="stringliteral">"Frames per period"</span>);
<a name="l00763"></a>00763 strcpy (params[i].long_desc, params[i].short_desc);
<a name="l00764"></a>00764
<a name="l00765"></a>00765 i++;
<a name="l00766"></a>00766 strcpy (params[i].name, <span class="stringliteral">"nperiods"</span>);
<a name="l00767"></a>00767 params[i].<a class="code" href="structjack__driver__param__desc__t.html#a0d80d0f9092d4fdaba7a3e37f82f3313">character</a> = <span class="charliteral">'n'</span>;
<a name="l00768"></a>00768 params[i].<a class="code" href="structjack__driver__param__desc__t.html#a1f7d08207a0c3285329a0bc7a7e6c59e">type</a> = JackDriverParamUInt;
<a name="l00769"></a>00769 params[i].<a class="code" href="structjack__driver__param__desc__t.html#a817eb04d0ccf7203345e55e608a7495f">value</a>.ui = 2U;
<a name="l00770"></a>00770 strcpy (params[i].short_desc, <span class="stringliteral">"Number of periods of playback latency"</span>);
<a name="l00771"></a>00771 strcpy (params[i].long_desc, params[i].short_desc);
<a name="l00772"></a>00772
<a name="l00773"></a>00773 i++;
<a name="l00774"></a>00774 strcpy (params[i].name, <span class="stringliteral">"hwmon"</span>);
<a name="l00775"></a>00775 params[i].<a class="code" href="structjack__driver__param__desc__t.html#a0d80d0f9092d4fdaba7a3e37f82f3313">character</a> = <span class="charliteral">'H'</span>;
<a name="l00776"></a>00776 params[i].<a class="code" href="structjack__driver__param__desc__t.html#a1f7d08207a0c3285329a0bc7a7e6c59e">type</a> = JackDriverParamBool;
<a name="l00777"></a>00777 params[i].<a class="code" href="structjack__driver__param__desc__t.html#a817eb04d0ccf7203345e55e608a7495f">value</a>.i = 0;
<a name="l00778"></a>00778 strcpy (params[i].short_desc, <span class="stringliteral">"Hardware monitoring, if available"</span>);
<a name="l00779"></a>00779 strcpy (params[i].long_desc, params[i].short_desc);
<a name="l00780"></a>00780
<a name="l00781"></a>00781 i++;
<a name="l00782"></a>00782 strcpy (params[i].name, <span class="stringliteral">"hwmeter"</span>);
<a name="l00783"></a>00783 params[i].<a class="code" href="structjack__driver__param__desc__t.html#a0d80d0f9092d4fdaba7a3e37f82f3313">character</a> = <span class="charliteral">'M'</span>;
<a name="l00784"></a>00784 params[i].<a class="code" href="structjack__driver__param__desc__t.html#a1f7d08207a0c3285329a0bc7a7e6c59e">type</a> = JackDriverParamBool;
<a name="l00785"></a>00785 params[i].<a class="code" href="structjack__driver__param__desc__t.html#a817eb04d0ccf7203345e55e608a7495f">value</a>.i = 0;
<a name="l00786"></a>00786 strcpy (params[i].short_desc, <span class="stringliteral">"Hardware metering, if available"</span>);
<a name="l00787"></a>00787 strcpy (params[i].long_desc, params[i].short_desc);
<a name="l00788"></a>00788
<a name="l00789"></a>00789 i++;
<a name="l00790"></a>00790 strcpy (params[i].name, <span class="stringliteral">"duplex"</span>);
<a name="l00791"></a>00791 params[i].<a class="code" href="structjack__driver__param__desc__t.html#a0d80d0f9092d4fdaba7a3e37f82f3313">character</a> = <span class="charliteral">'D'</span>;
<a name="l00792"></a>00792 params[i].<a class="code" href="structjack__driver__param__desc__t.html#a1f7d08207a0c3285329a0bc7a7e6c59e">type</a> = JackDriverParamBool;
<a name="l00793"></a>00793 params[i].<a class="code" href="structjack__driver__param__desc__t.html#a817eb04d0ccf7203345e55e608a7495f">value</a>.i = 1;
<a name="l00794"></a>00794 strcpy (params[i].short_desc,
<a name="l00795"></a>00795 <span class="stringliteral">"Provide both capture and playback ports"</span>);
<a name="l00796"></a>00796 strcpy (params[i].long_desc, params[i].short_desc);
<a name="l00797"></a>00797
<a name="l00798"></a>00798 i++;
<a name="l00799"></a>00799 strcpy (params[i].name, <span class="stringliteral">"softmode"</span>);
<a name="l00800"></a>00800 params[i].<a class="code" href="structjack__driver__param__desc__t.html#a0d80d0f9092d4fdaba7a3e37f82f3313">character</a> = <span class="charliteral">'s'</span>;
<a name="l00801"></a>00801 params[i].<a class="code" href="structjack__driver__param__desc__t.html#a1f7d08207a0c3285329a0bc7a7e6c59e">type</a> = JackDriverParamBool;
<a name="l00802"></a>00802 params[i].<a class="code" href="structjack__driver__param__desc__t.html#a817eb04d0ccf7203345e55e608a7495f">value</a>.i = 0;
<a name="l00803"></a>00803 strcpy (params[i].short_desc, <span class="stringliteral">"Soft-mode, no xrun handling"</span>);
<a name="l00804"></a>00804 strcpy (params[i].long_desc, params[i].short_desc);
<a name="l00805"></a>00805
<a name="l00806"></a>00806 i++;
<a name="l00807"></a>00807 strcpy (params[i].name, <span class="stringliteral">"monitor"</span>);
<a name="l00808"></a>00808 params[i].<a class="code" href="structjack__driver__param__desc__t.html#a0d80d0f9092d4fdaba7a3e37f82f3313">character</a> = <span class="charliteral">'m'</span>;
<a name="l00809"></a>00809 params[i].<a class="code" href="structjack__driver__param__desc__t.html#a1f7d08207a0c3285329a0bc7a7e6c59e">type</a> = JackDriverParamBool;
<a name="l00810"></a>00810 params[i].<a class="code" href="structjack__driver__param__desc__t.html#a817eb04d0ccf7203345e55e608a7495f">value</a>.i = 0;
<a name="l00811"></a>00811 strcpy (params[i].short_desc, <span class="stringliteral">"Provide monitor ports for the output"</span>);
<a name="l00812"></a>00812 strcpy (params[i].long_desc, params[i].short_desc);
<a name="l00813"></a>00813
<a name="l00814"></a>00814 i++;
<a name="l00815"></a>00815 strcpy (params[i].name, <span class="stringliteral">"dither"</span>);
<a name="l00816"></a>00816 params[i].<a class="code" href="structjack__driver__param__desc__t.html#a0d80d0f9092d4fdaba7a3e37f82f3313">character</a> = <span class="charliteral">'z'</span>;
<a name="l00817"></a>00817 params[i].<a class="code" href="structjack__driver__param__desc__t.html#a1f7d08207a0c3285329a0bc7a7e6c59e">type</a> = JackDriverParamChar;
<a name="l00818"></a>00818 params[i].<a class="code" href="structjack__driver__param__desc__t.html#a817eb04d0ccf7203345e55e608a7495f">value</a>.c = <span class="charliteral">'n'</span>;
<a name="l00819"></a>00819 strcpy (params[i].short_desc, <span class="stringliteral">"Dithering mode"</span>);
<a name="l00820"></a>00820 strcpy (params[i].long_desc,
<a name="l00821"></a>00821 <span class="stringliteral">"Dithering mode:\n"</span>
<a name="l00822"></a>00822 <span class="stringliteral">" n - none\n"</span>
<a name="l00823"></a>00823 <span class="stringliteral">" r - rectangular\n"</span>
<a name="l00824"></a>00824 <span class="stringliteral">" s - shaped\n"</span>
<a name="l00825"></a>00825 <span class="stringliteral">" t - triangular"</span>);
<a name="l00826"></a>00826 params[i].<a class="code" href="structjack__driver__param__desc__t.html#a41d19796d0b7342bd6ab2ecf3251f5d7">constraint</a> = get_dither_constraint();
<a name="l00827"></a>00827
<a name="l00828"></a>00828 i++;
<a name="l00829"></a>00829 strcpy (params[i].name, <span class="stringliteral">"inchannels"</span>);
<a name="l00830"></a>00830 params[i].<a class="code" href="structjack__driver__param__desc__t.html#a0d80d0f9092d4fdaba7a3e37f82f3313">character</a> = <span class="charliteral">'i'</span>;
<a name="l00831"></a>00831 params[i].<a class="code" href="structjack__driver__param__desc__t.html#a1f7d08207a0c3285329a0bc7a7e6c59e">type</a> = JackDriverParamUInt;
<a name="l00832"></a>00832 params[i].<a class="code" href="structjack__driver__param__desc__t.html#a817eb04d0ccf7203345e55e608a7495f">value</a>.i = 0;
<a name="l00833"></a>00833 strcpy (params[i].short_desc,
<a name="l00834"></a>00834 <span class="stringliteral">"Number of capture channels (defaults to hardware max)"</span>);
<a name="l00835"></a>00835 strcpy (params[i].long_desc, params[i].short_desc);
<a name="l00836"></a>00836
<a name="l00837"></a>00837 i++;
<a name="l00838"></a>00838 strcpy (params[i].name, <span class="stringliteral">"outchannels"</span>);
<a name="l00839"></a>00839 params[i].<a class="code" href="structjack__driver__param__desc__t.html#a0d80d0f9092d4fdaba7a3e37f82f3313">character</a> = <span class="charliteral">'o'</span>;
<a name="l00840"></a>00840 params[i].<a class="code" href="structjack__driver__param__desc__t.html#a1f7d08207a0c3285329a0bc7a7e6c59e">type</a> = JackDriverParamUInt;
<a name="l00841"></a>00841 params[i].<a class="code" href="structjack__driver__param__desc__t.html#a817eb04d0ccf7203345e55e608a7495f">value</a>.i = 0;
<a name="l00842"></a>00842 strcpy (params[i].short_desc,
<a name="l00843"></a>00843 <span class="stringliteral">"Number of playback channels (defaults to hardware max)"</span>);
<a name="l00844"></a>00844 strcpy (params[i].long_desc, params[i].short_desc);
<a name="l00845"></a>00845
<a name="l00846"></a>00846 i++;
<a name="l00847"></a>00847 strcpy (params[i].name, <span class="stringliteral">"shorts"</span>);
<a name="l00848"></a>00848 params[i].<a class="code" href="structjack__driver__param__desc__t.html#a0d80d0f9092d4fdaba7a3e37f82f3313">character</a> = <span class="charliteral">'S'</span>;
<a name="l00849"></a>00849 params[i].<a class="code" href="structjack__driver__param__desc__t.html#a1f7d08207a0c3285329a0bc7a7e6c59e">type</a> = JackDriverParamBool;
<a name="l00850"></a>00850 params[i].<a class="code" href="structjack__driver__param__desc__t.html#a817eb04d0ccf7203345e55e608a7495f">value</a>.i = FALSE;
<a name="l00851"></a>00851 strcpy (params[i].short_desc, <span class="stringliteral">"Try 16-bit samples before 32-bit"</span>);
<a name="l00852"></a>00852 strcpy (params[i].long_desc, params[i].short_desc);
<a name="l00853"></a>00853
<a name="l00854"></a>00854 i++;
<a name="l00855"></a>00855 strcpy (params[i].name, <span class="stringliteral">"input-latency"</span>);
<a name="l00856"></a>00856 params[i].<a class="code" href="structjack__driver__param__desc__t.html#a0d80d0f9092d4fdaba7a3e37f82f3313">character</a> = <span class="charliteral">'I'</span>;
<a name="l00857"></a>00857 params[i].<a class="code" href="structjack__driver__param__desc__t.html#a1f7d08207a0c3285329a0bc7a7e6c59e">type</a> = JackDriverParamUInt;
<a name="l00858"></a>00858 params[i].<a class="code" href="structjack__driver__param__desc__t.html#a817eb04d0ccf7203345e55e608a7495f">value</a>.i = 0;
<a name="l00859"></a>00859 strcpy (params[i].short_desc, <span class="stringliteral">"Extra input latency (frames)"</span>);
<a name="l00860"></a>00860 strcpy (params[i].long_desc, params[i].short_desc);
<a name="l00861"></a>00861
<a name="l00862"></a>00862 i++;
<a name="l00863"></a>00863 strcpy (params[i].name, <span class="stringliteral">"output-latency"</span>);
<a name="l00864"></a>00864 params[i].<a class="code" href="structjack__driver__param__desc__t.html#a0d80d0f9092d4fdaba7a3e37f82f3313">character</a> = <span class="charliteral">'O'</span>;
<a name="l00865"></a>00865 params[i].<a class="code" href="structjack__driver__param__desc__t.html#a1f7d08207a0c3285329a0bc7a7e6c59e">type</a> = JackDriverParamUInt;
<a name="l00866"></a>00866 params[i].<a class="code" href="structjack__driver__param__desc__t.html#a817eb04d0ccf7203345e55e608a7495f">value</a>.i = 0;
<a name="l00867"></a>00867 strcpy (params[i].short_desc, <span class="stringliteral">"Extra output latency (frames)"</span>);
<a name="l00868"></a>00868 strcpy (params[i].long_desc, params[i].short_desc);
<a name="l00869"></a>00869
<a name="l00870"></a>00870 i++;
<a name="l00871"></a>00871 strcpy (params[i].name, <span class="stringliteral">"midi-driver"</span>);
<a name="l00872"></a>00872 params[i].<a class="code" href="structjack__driver__param__desc__t.html#a0d80d0f9092d4fdaba7a3e37f82f3313">character</a> = <span class="charliteral">'X'</span>;
<a name="l00873"></a>00873 params[i].<a class="code" href="structjack__driver__param__desc__t.html#a1f7d08207a0c3285329a0bc7a7e6c59e">type</a> = JackDriverParamString;
<a name="l00874"></a>00874 strcpy (params[i].value.str, <span class="stringliteral">"none"</span>);
<a name="l00875"></a>00875 strcpy (params[i].short_desc, <span class="stringliteral">"ALSA MIDI driver name (seq|raw)"</span>);
<a name="l00876"></a>00876 strcpy (params[i].long_desc,
<a name="l00877"></a>00877 <span class="stringliteral">"ALSA MIDI driver:\n"</span>
<a name="l00878"></a>00878 <span class="stringliteral">" none - no MIDI driver\n"</span>
<a name="l00879"></a>00879 <span class="stringliteral">" seq - ALSA Sequencer driver\n"</span>
<a name="l00880"></a>00880 <span class="stringliteral">" raw - ALSA RawMIDI driver\n"</span>);
<a name="l00881"></a>00881 params[i].<a class="code" href="structjack__driver__param__desc__t.html#a41d19796d0b7342bd6ab2ecf3251f5d7">constraint</a> = get_midi_driver_constraint();
<a name="l00882"></a>00882
<a name="l00883"></a>00883 desc-><a class="code" href="structjack__driver__desc__t.html#a4adfdb11fdfa44a5154da9ac971bb44c">params</a> = params;
<a name="l00884"></a>00884 <span class="keywordflow">return</span> desc;
<a name="l00885"></a>00885 }
<a name="l00886"></a>00886
<a name="l00887"></a>00887 <span class="keyword">static</span> <a class="code" href="classJack_1_1JackAlsaDriver.html" title="The ALSA driver.">Jack::JackAlsaDriver</a>* g_alsa_driver;
<a name="l00888"></a>00888
<a name="l00889"></a>00889 SERVER_EXPORT <a class="code" href="classJack_1_1JackDriverClientInterface.html" title="The base interface for drivers clients.">Jack::JackDriverClientInterface</a>* driver_initialize(<a class="code" href="classJack_1_1JackLockedEngine.html" title="Locked Engine, access to methods is serialized using a mutex.">Jack::JackLockedEngine</a>* engine, <a class="code" href="classJack_1_1JackMachSemaphore.html" title="Inter process synchronization using using Mach semaphore.">Jack::JackSynchro</a>* table, <span class="keyword">const</span> <a class="code" href="struct__JSList.html">JSList</a>* params)
<a name="l00890"></a>00890 {
<a name="l00891"></a>00891 jack_nframes_t srate = 48000;
<a name="l00892"></a>00892 jack_nframes_t frames_per_interrupt = 1024;
<a name="l00893"></a>00893 <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> user_nperiods = 2;
<a name="l00894"></a>00894 <span class="keyword">const</span> <span class="keywordtype">char</span> *playback_pcm_name = <span class="stringliteral">"hw:0"</span>;
<a name="l00895"></a>00895 <span class="keyword">const</span> <span class="keywordtype">char</span> *capture_pcm_name = <span class="stringliteral">"hw:0"</span>;
<a name="l00896"></a>00896 <span class="keywordtype">int</span> hw_monitoring = FALSE;
<a name="l00897"></a>00897 <span class="keywordtype">int</span> hw_metering = FALSE;
<a name="l00898"></a>00898 <span class="keywordtype">int</span> capture = FALSE;
<a name="l00899"></a>00899 <span class="keywordtype">int</span> playback = FALSE;
<a name="l00900"></a>00900 <span class="keywordtype">int</span> soft_mode = FALSE;
<a name="l00901"></a>00901 <span class="keywordtype">int</span> monitor = FALSE;
<a name="l00902"></a>00902 DitherAlgorithm dither = None;
<a name="l00903"></a>00903 <span class="keywordtype">int</span> user_capture_nchnls = 0;
<a name="l00904"></a>00904 <span class="keywordtype">int</span> user_playback_nchnls = 0;
<a name="l00905"></a>00905 <span class="keywordtype">int</span> shorts_first = FALSE;
<a name="l00906"></a>00906 jack_nframes_t systemic_input_latency = 0;
<a name="l00907"></a>00907 jack_nframes_t systemic_output_latency = 0;
<a name="l00908"></a>00908 <span class="keyword">const</span> <a class="code" href="struct__JSList.html">JSList</a> * node;
<a name="l00909"></a>00909 <span class="keyword">const</span> <a class="code" href="structjack__driver__param__t.html">jack_driver_param_t</a> * param;
<a name="l00910"></a>00910 <span class="keyword">const</span> <span class="keywordtype">char</span> *midi_driver = <span class="stringliteral">"none"</span>;
<a name="l00911"></a>00911
<a name="l00912"></a>00912 <span class="keywordflow">for</span> (node = params; node; node = jack_slist_next (node)) {
<a name="l00913"></a>00913 param = (<span class="keyword">const</span> <a class="code" href="structjack__driver__param__t.html">jack_driver_param_t</a> *) node->data;
<a name="l00914"></a>00914
<a name="l00915"></a>00915 switch (param->character) {
<a name="l00916"></a>00916
<a name="l00917"></a>00917 <span class="keywordflow">case</span> <span class="charliteral">'C'</span>:
<a name="l00918"></a>00918 capture = TRUE;
<a name="l00919"></a>00919 <span class="keywordflow">if</span> (strcmp (param->value.str, <span class="stringliteral">"none"</span>) != 0) {
<a name="l00920"></a>00920 capture_pcm_name = strdup (param->value.str);
<a name="l00921"></a>00921 <a class="code" href="group__ServerControl.html#ga35f69faaee3bb9b958ed8c9a5f62246c">jack_log</a>(<span class="stringliteral">"capture device %s"</span>, capture_pcm_name);
<a name="l00922"></a>00922 }
<a name="l00923"></a>00923 <span class="keywordflow">break</span>;
<a name="l00924"></a>00924
<a name="l00925"></a>00925 <span class="keywordflow">case</span> <span class="charliteral">'P'</span>:
<a name="l00926"></a>00926 playback = TRUE;
<a name="l00927"></a>00927 <span class="keywordflow">if</span> (strcmp (param->value.str, <span class="stringliteral">"none"</span>) != 0) {
<a name="l00928"></a>00928 playback_pcm_name = strdup (param->value.str);
<a name="l00929"></a>00929 <a class="code" href="group__ServerControl.html#ga35f69faaee3bb9b958ed8c9a5f62246c">jack_log</a>(<span class="stringliteral">"playback device %s"</span>, playback_pcm_name);
<a name="l00930"></a>00930 }
<a name="l00931"></a>00931 <span class="keywordflow">break</span>;
<a name="l00932"></a>00932
<a name="l00933"></a>00933 <span class="keywordflow">case</span> <span class="charliteral">'D'</span>:
<a name="l00934"></a>00934 playback = TRUE;
<a name="l00935"></a>00935 capture = TRUE;
<a name="l00936"></a>00936 <span class="keywordflow">break</span>;
<a name="l00937"></a>00937
<a name="l00938"></a>00938 <span class="keywordflow">case</span> <span class="charliteral">'d'</span>:
<a name="l00939"></a>00939 playback_pcm_name = strdup (param->value.str);
<a name="l00940"></a>00940 capture_pcm_name = strdup (param->value.str);
<a name="l00941"></a>00941 <a class="code" href="group__ServerControl.html#ga35f69faaee3bb9b958ed8c9a5f62246c">jack_log</a>(<span class="stringliteral">"playback device %s"</span>, playback_pcm_name);
<a name="l00942"></a>00942 <a class="code" href="group__ServerControl.html#ga35f69faaee3bb9b958ed8c9a5f62246c">jack_log</a>(<span class="stringliteral">"capture device %s"</span>, capture_pcm_name);
<a name="l00943"></a>00943 <span class="keywordflow">break</span>;
<a name="l00944"></a>00944
<a name="l00945"></a>00945 <span class="keywordflow">case</span> <span class="charliteral">'H'</span>:
<a name="l00946"></a>00946 hw_monitoring = param->value.i;
<a name="l00947"></a>00947 <span class="keywordflow">break</span>;
<a name="l00948"></a>00948
<a name="l00949"></a>00949 <span class="keywordflow">case</span> <span class="charliteral">'m'</span>:
<a name="l00950"></a>00950 monitor = param->value.i;
<a name="l00951"></a>00951 <span class="keywordflow">break</span>;
<a name="l00952"></a>00952
<a name="l00953"></a>00953 <span class="keywordflow">case</span> <span class="charliteral">'M'</span>:
<a name="l00954"></a>00954 hw_metering = param->value.i;
<a name="l00955"></a>00955 <span class="keywordflow">break</span>;
<a name="l00956"></a>00956
<a name="l00957"></a>00957 <span class="keywordflow">case</span> <span class="charliteral">'r'</span>:
<a name="l00958"></a>00958 srate = param->value.ui;
<a name="l00959"></a>00959 <a class="code" href="group__ServerControl.html#ga35f69faaee3bb9b958ed8c9a5f62246c">jack_log</a>(<span class="stringliteral">"apparent rate = %d"</span>, srate);
<a name="l00960"></a>00960 <span class="keywordflow">break</span>;
<a name="l00961"></a>00961
<a name="l00962"></a>00962 <span class="keywordflow">case</span> <span class="charliteral">'p'</span>:
<a name="l00963"></a>00963 frames_per_interrupt = param->value.ui;
<a name="l00964"></a>00964 <a class="code" href="group__ServerControl.html#ga35f69faaee3bb9b958ed8c9a5f62246c">jack_log</a>(<span class="stringliteral">"frames per period = %d"</span>, frames_per_interrupt);
<a name="l00965"></a>00965 <span class="keywordflow">break</span>;
<a name="l00966"></a>00966
<a name="l00967"></a>00967 <span class="keywordflow">case</span> <span class="charliteral">'n'</span>:
<a name="l00968"></a>00968 user_nperiods = param->value.ui;
<a name="l00969"></a>00969 <span class="keywordflow">if</span> (user_nperiods < 2) <span class="comment">/* enforce minimum value */</span>
<a name="l00970"></a>00970 user_nperiods = 2;
<a name="l00971"></a>00971 <span class="keywordflow">break</span>;
<a name="l00972"></a>00972
<a name="l00973"></a>00973 <span class="keywordflow">case</span> <span class="charliteral">'s'</span>:
<a name="l00974"></a>00974 soft_mode = param->value.i;
<a name="l00975"></a>00975 <span class="keywordflow">break</span>;
<a name="l00976"></a>00976
<a name="l00977"></a>00977 <span class="keywordflow">case</span> <span class="charliteral">'z'</span>:
<a name="l00978"></a>00978 <span class="keywordflow">if</span> (dither_opt (param->value.c, &dither)) {
<a name="l00979"></a>00979 <span class="keywordflow">return</span> NULL;
<a name="l00980"></a>00980 }
<a name="l00981"></a>00981 <span class="keywordflow">break</span>;
<a name="l00982"></a>00982
<a name="l00983"></a>00983 <span class="keywordflow">case</span> <span class="charliteral">'i'</span>:
<a name="l00984"></a>00984 user_capture_nchnls = param->value.ui;
<a name="l00985"></a>00985 <span class="keywordflow">break</span>;
<a name="l00986"></a>00986
<a name="l00987"></a>00987 <span class="keywordflow">case</span> <span class="charliteral">'o'</span>:
<a name="l00988"></a>00988 user_playback_nchnls = param->value.ui;
<a name="l00989"></a>00989 <span class="keywordflow">break</span>;
<a name="l00990"></a>00990
<a name="l00991"></a>00991 <span class="keywordflow">case</span> <span class="charliteral">'S'</span>:
<a name="l00992"></a>00992 shorts_first = param->value.i;
<a name="l00993"></a>00993 <span class="keywordflow">break</span>;
<a name="l00994"></a>00994
<a name="l00995"></a>00995 <span class="keywordflow">case</span> <span class="charliteral">'I'</span>:
<a name="l00996"></a>00996 systemic_input_latency = param->value.ui;
<a name="l00997"></a>00997 <span class="keywordflow">break</span>;
<a name="l00998"></a>00998
<a name="l00999"></a>00999 <span class="keywordflow">case</span> <span class="charliteral">'O'</span>:
<a name="l01000"></a>01000 systemic_output_latency = param->value.ui;
<a name="l01001"></a>01001 <span class="keywordflow">break</span>;
<a name="l01002"></a>01002
<a name="l01003"></a>01003 <span class="keywordflow">case</span> <span class="charliteral">'X'</span>:
<a name="l01004"></a>01004 midi_driver = strdup(param->value.str);
<a name="l01005"></a>01005 <span class="keywordflow">break</span>;
<a name="l01006"></a>01006 }
<a name="l01007"></a>01007 }
<a name="l01008"></a>01008
<a name="l01009"></a>01009 <span class="comment">/* duplex is the default */</span>
<a name="l01010"></a>01010 <span class="keywordflow">if</span> (!capture && !playback) {
<a name="l01011"></a>01011 capture = TRUE;
<a name="l01012"></a>01012 playback = TRUE;
<a name="l01013"></a>01013 }
<a name="l01014"></a>01014
<a name="l01015"></a>01015 g_alsa_driver = <span class="keyword">new</span> <a class="code" href="classJack_1_1JackAlsaDriver.html" title="The ALSA driver.">Jack::JackAlsaDriver</a>(<span class="stringliteral">"system"</span>, <span class="stringliteral">"alsa_pcm"</span>, engine, table);
<a name="l01016"></a>01016 <a class="code" href="classJack_1_1JackDriverClientInterface.html" title="The base interface for drivers clients.">Jack::JackDriverClientInterface</a>* threaded_driver = <span class="keyword">new</span> <a class="code" href="classJack_1_1JackThreadedDriver.html" title="The base class for threaded drivers. Threaded drivers are used with blocking devices.">Jack::JackThreadedDriver</a>(g_alsa_driver);
<a name="l01017"></a>01017 <span class="comment">// Special open for ALSA driver...</span>
<a name="l01018"></a>01018 <span class="keywordflow">if</span> (g_alsa_driver->Open(frames_per_interrupt, user_nperiods, srate, hw_monitoring, hw_metering, capture, playback, dither, soft_mode, monitor,
<a name="l01019"></a>01019 user_capture_nchnls, user_playback_nchnls, shorts_first, capture_pcm_name, playback_pcm_name,
<a name="l01020"></a>01020 systemic_input_latency, systemic_output_latency, midi_driver) == 0) {
<a name="l01021"></a>01021 <span class="keywordflow">return</span> threaded_driver;
<a name="l01022"></a>01022 } <span class="keywordflow">else</span> {
<a name="l01023"></a>01023 <span class="keyword">delete</span> threaded_driver; <span class="comment">// Delete the decorated driver</span>
<a name="l01024"></a>01024 <span class="keywordflow">return</span> NULL;
<a name="l01025"></a>01025 }
<a name="l01026"></a>01026 }
<a name="l01027"></a>01027
<a name="l01028"></a>01028 <span class="comment">// Code to be used in alsa_driver.c</span>
<a name="l01029"></a>01029
<a name="l01030"></a>01030 <span class="keywordtype">void</span> ReadInput(jack_nframes_t orig_nframes, snd_pcm_sframes_t contiguous, snd_pcm_sframes_t nread)
<a name="l01031"></a>01031 {
<a name="l01032"></a>01032 g_alsa_driver->ReadInputAux(orig_nframes, contiguous, nread);
<a name="l01033"></a>01033 }
<a name="l01034"></a>01034 <span class="keywordtype">void</span> MonitorInput()
<a name="l01035"></a>01035 {
<a name="l01036"></a>01036 g_alsa_driver->MonitorInputAux();
<a name="l01037"></a>01037 }
<a name="l01038"></a>01038 <span class="keywordtype">void</span> ClearOutput()
<a name="l01039"></a>01039 {
<a name="l01040"></a>01040 g_alsa_driver->ClearOutputAux();
<a name="l01041"></a>01041 }
<a name="l01042"></a>01042 <span class="keywordtype">void</span> WriteOutput(jack_nframes_t orig_nframes, snd_pcm_sframes_t contiguous, snd_pcm_sframes_t nwritten)
<a name="l01043"></a>01043 {
<a name="l01044"></a>01044 g_alsa_driver->WriteOutputAux(orig_nframes, contiguous, nwritten);
<a name="l01045"></a>01045 }
<a name="l01046"></a>01046 <span class="keywordtype">void</span> SetTime(jack_time_t time)
<a name="l01047"></a>01047 {
<a name="l01048"></a>01048 g_alsa_driver->SetTimetAux(time);
<a name="l01049"></a>01049 }
<a name="l01050"></a>01050
<a name="l01051"></a>01051 <span class="keywordtype">int</span> Restart()
<a name="l01052"></a>01052 {
<a name="l01053"></a>01053 <span class="keywordtype">int</span> res;
<a name="l01054"></a>01054 <span class="keywordflow">if</span> ((res = g_alsa_driver->Stop()) == 0)
<a name="l01055"></a>01055 res = g_alsa_driver->Start();
<a name="l01056"></a>01056 <span class="keywordflow">return</span> res;
<a name="l01057"></a>01057 }
<a name="l01058"></a>01058
<a name="l01059"></a>01059 <span class="preprocessor">#ifdef __cplusplus</span>
<a name="l01060"></a>01060 <span class="preprocessor"></span>}
<a name="l01061"></a>01061 <span class="preprocessor">#endif</span>
<a name="l01062"></a>01062 <span class="preprocessor"></span>
<a name="l01063"></a>01063
</pre></div></div>
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