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    15. 

  15. <h1>src/fluid_synth.c</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* FluidSynth - A Software Synthesizer</span>
    16. 

  16. <a name="l00002"></a>00002 <span class="comment"> *</span>
    17. 

  17. <a name="l00003"></a>00003 <span class="comment"> * Copyright (C) 2003  Peter Hanappe and others.</span>
    18. 

  18. <a name="l00004"></a>00004 <span class="comment"> *</span>
    19. 

  19. <a name="l00005"></a>00005 <span class="comment"> * This library is free software; you can redistribute it and/or</span>
    20. 

  20. <a name="l00006"></a>00006 <span class="comment"> * modify it under the terms of the GNU Library General Public License</span>
    21. 

  21. <a name="l00007"></a>00007 <span class="comment"> * as published by the Free Software Foundation; either version 2 of</span>
    22. 

  22. <a name="l00008"></a>00008 <span class="comment"> * the License, or (at your option) any later version.</span>
    23. 

  23. <a name="l00009"></a>00009 <span class="comment"> *</span>
    24. 

  24. <a name="l00010"></a>00010 <span class="comment"> * This library is distributed in the hope that it will be useful, but</span>
    25. 

  25. <a name="l00011"></a>00011 <span class="comment"> * WITHOUT ANY WARRANTY; without even the implied warranty of</span>
    26. 

  26. <a name="l00012"></a>00012 <span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU</span>
    27. 

  27. <a name="l00013"></a>00013 <span class="comment"> * Library General Public License for more details.</span>
    28. 

  28. <a name="l00014"></a>00014 <span class="comment"> *</span>
    29. 

  29. <a name="l00015"></a>00015 <span class="comment"> * You should have received a copy of the GNU Library General Public</span>
    30. 

  30. <a name="l00016"></a>00016 <span class="comment"> * License along with this library; if not, write to the Free</span>
    31. 

  31. <a name="l00017"></a>00017 <span class="comment"> * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA</span>
    32. 

  32. <a name="l00018"></a>00018 <span class="comment"> * 02111-1307, USA</span>
    33. 

  33. <a name="l00019"></a>00019 <span class="comment"> */</span>
    34. 

  34. <a name="l00020"></a>00020 
    35. 

  35. <a name="l00021"></a>00021 <span class="preprocessor">#include &lt;math.h&gt;</span>
    36. 

  36. <a name="l00022"></a>00022 
    37. 

  37. <a name="l00023"></a>00023 <span class="preprocessor">#include "fluid_synth.h"</span>
    38. 

  38. <a name="l00024"></a>00024 <span class="preprocessor">#include "fluid_sys.h"</span>
    39. 

  39. <a name="l00025"></a>00025 <span class="preprocessor">#include "fluid_chan.h"</span>
    40. 

  40. <a name="l00026"></a>00026 <span class="preprocessor">#include "fluid_tuning.h"</span>
    41. 

  41. <a name="l00027"></a>00027 <span class="preprocessor">#include "fluid_settings.h"</span>
    42. 

  42. <a name="l00028"></a>00028 <span class="preprocessor">#include "fluid_sfont.h"</span>
    43. 

  43. <a name="l00029"></a>00029 
    44. 

  44. <a name="l00030"></a>00030 <span class="preprocessor">#ifdef TRAP_ON_FPE</span>
    45. 

  45. <a name="l00031"></a>00031 <span class="preprocessor"></span><span class="preprocessor">#define _GNU_SOURCE</span>
    46. 

  46. <a name="l00032"></a>00032 <span class="preprocessor"></span><span class="preprocessor">#include &lt;fenv.h&gt;</span>
    47. 

  47. <a name="l00033"></a>00033 
    48. 

  48. <a name="l00034"></a>00034 <span class="comment">/* seems to not be declared in fenv.h */</span>
    49. 

  49. <a name="l00035"></a>00035 <span class="keyword">extern</span> <span class="keywordtype">int</span> feenableexcept (<span class="keywordtype">int</span> excepts);
    50. 

  50. <a name="l00036"></a>00036 <span class="preprocessor">#endif</span>
    51. 

  51. <a name="l00037"></a>00037 <span class="preprocessor"></span>
    52. 

  52. <a name="l00038"></a>00038 
    53. 

  53. <a name="l00039"></a>00039 <a class="code" href="struct__fluid__sfloader__t.html">fluid_sfloader_t</a>* new_fluid_defsfloader(<span class="keywordtype">void</span>);
    54. 

  54. <a name="l00040"></a>00040 
    55. 

  55. <a name="l00041"></a>00041 <span class="comment">/************************************************************************</span>
    56. 

  56. <a name="l00042"></a>00042 <span class="comment"> *</span>
    57. 

  57. <a name="l00043"></a>00043 <span class="comment"> * These functions were added after the v1.0 API freeze. They are not</span>
    58. 

  58. <a name="l00044"></a>00044 <span class="comment"> * in synth.h. They should be added as soon as a new development</span>
    59. 

  59. <a name="l00045"></a>00045 <span class="comment"> * version is started.</span>
    60. 

  60. <a name="l00046"></a>00046 <span class="comment"> *</span>
    61. 

  61. <a name="l00047"></a>00047 <span class="comment"> ************************************************************************/</span>
    62. 

  62. <a name="l00048"></a>00048 
    63. 

  63. <a name="l00049"></a>00049 <span class="keywordtype">int</span> fluid_synth_program_select2(fluid_synth_t* synth,
    64. 

  64. <a name="l00050"></a>00050                                 <span class="keywordtype">int</span> chan,
    65. 

  65. <a name="l00051"></a>00051                                 <span class="keywordtype">char</span>* sfont_name,
    66. 

  66. <a name="l00052"></a>00052                                 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> bank_num,
    67. 

  67. <a name="l00053"></a>00053                                 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> preset_num);
    68. 

  68. <a name="l00054"></a>00054 
    69. 

  69. <a name="l00055"></a>00055 <a class="code" href="struct__fluid__sfont__t.html">fluid_sfont_t</a>* fluid_synth_get_sfont_by_name(fluid_synth_t* synth, <span class="keywordtype">char</span> *name);
    70. 

  70. <a name="l00056"></a>00056 
    71. 

  71. <a name="l00057"></a>00057 <span class="keywordtype">int</span> fluid_synth_set_gen2(fluid_synth_t* synth, <span class="keywordtype">int</span> chan,
    72. 

  72. <a name="l00058"></a>00058                          <span class="keywordtype">int</span> param, <span class="keywordtype">float</span> value,
    73. 

  73. <a name="l00059"></a>00059                          <span class="keywordtype">int</span> absolute, <span class="keywordtype">int</span> normalized);
    74. 

  74. <a name="l00060"></a>00060 
    75. 

  75. <a name="l00061"></a>00061 
    76. 

  76. <a name="l00062"></a>00062 <span class="comment">/***************************************************************</span>
    77. 

  77. <a name="l00063"></a>00063 <span class="comment"> *</span>
    78. 

  78. <a name="l00064"></a>00064 <span class="comment"> *                         GLOBAL</span>
    79. 

  79. <a name="l00065"></a>00065 <span class="comment"> */</span>
    80. 

  80. <a name="l00066"></a>00066 
    81. 

  81. <a name="l00067"></a>00067 <span class="comment">/* has the synth module been initialized? */</span>
    82. 

  82. <a name="l00068"></a>00068 <span class="keyword">static</span> <span class="keywordtype">int</span> fluid_synth_initialized = 0;
    83. 

  83. <a name="l00069"></a>00069 <span class="keyword">static</span> <span class="keywordtype">void</span> fluid_synth_init(<span class="keywordtype">void</span>);
    84. 

  84. <a name="l00070"></a>00070 <span class="keyword">static</span> <span class="keywordtype">void</span> init_dither(<span class="keywordtype">void</span>);
    85. 

  85. <a name="l00071"></a>00071 
    86. 

  86. <a name="l00072"></a>00072 <span class="comment">/* default modulators</span>
    87. 

  87. <a name="l00073"></a>00073 <span class="comment"> * SF2.01 page 52 ff:</span>
    88. 

  88. <a name="l00074"></a>00074 <span class="comment"> *</span>
    89. 

  89. <a name="l00075"></a>00075 <span class="comment"> * There is a set of predefined default modulators. They have to be</span>
    90. 

  90. <a name="l00076"></a>00076 <span class="comment"> * explicitly overridden by the sound font in order to turn them off.</span>
    91. 

  91. <a name="l00077"></a>00077 <span class="comment"> */</span>
    92. 

  92. <a name="l00078"></a>00078 
    93. 

  93. <a name="l00079"></a>00079 <a class="code" href="struct__fluid__mod__t.html">fluid_mod_t</a> default_vel2att_mod;        <span class="comment">/* SF2.01 section 8.4.1  */</span>
    94. 

  94. <a name="l00080"></a>00080 <a class="code" href="struct__fluid__mod__t.html">fluid_mod_t</a> default_vel2filter_mod;     <span class="comment">/* SF2.01 section 8.4.2  */</span>
    95. 

  95. <a name="l00081"></a>00081 <a class="code" href="struct__fluid__mod__t.html">fluid_mod_t</a> default_at2viblfo_mod;      <span class="comment">/* SF2.01 section 8.4.3  */</span>
    96. 

  96. <a name="l00082"></a>00082 <a class="code" href="struct__fluid__mod__t.html">fluid_mod_t</a> default_mod2viblfo_mod;     <span class="comment">/* SF2.01 section 8.4.4  */</span>
    97. 

  97. <a name="l00083"></a>00083 <a class="code" href="struct__fluid__mod__t.html">fluid_mod_t</a> default_att_mod;            <span class="comment">/* SF2.01 section 8.4.5  */</span>
    98. 

  98. <a name="l00084"></a>00084 <a class="code" href="struct__fluid__mod__t.html">fluid_mod_t</a> default_pan_mod;            <span class="comment">/* SF2.01 section 8.4.6  */</span>
    99. 

  99. <a name="l00085"></a>00085 <a class="code" href="struct__fluid__mod__t.html">fluid_mod_t</a> default_expr_mod;           <span class="comment">/* SF2.01 section 8.4.7  */</span>
    100. 

  100. <a name="l00086"></a>00086 <a class="code" href="struct__fluid__mod__t.html">fluid_mod_t</a> default_reverb_mod;         <span class="comment">/* SF2.01 section 8.4.8  */</span>
    101. 

  101. <a name="l00087"></a>00087 <a class="code" href="struct__fluid__mod__t.html">fluid_mod_t</a> default_chorus_mod;         <span class="comment">/* SF2.01 section 8.4.9  */</span>
    102. 

  102. <a name="l00088"></a>00088 <a class="code" href="struct__fluid__mod__t.html">fluid_mod_t</a> default_pitch_bend_mod;     <span class="comment">/* SF2.01 section 8.4.10 */</span>
    103. 

  103. <a name="l00089"></a>00089 
    104. 

  104. <a name="l00090"></a>00090 <span class="comment">/* reverb presets */</span>
    105. 

  105. <a name="l00091"></a>00091 <span class="keyword">static</span> fluid_revmodel_presets_t revmodel_preset[] = {
    106. 

  106. <a name="l00092"></a>00092   <span class="comment">/* name */</span>    <span class="comment">/* roomsize */</span> <span class="comment">/* damp */</span> <span class="comment">/* width */</span> <span class="comment">/* level */</span>
    107. 

  107. <a name="l00093"></a>00093   { <span class="stringliteral">"Test 1"</span>,          0.2f,      0.0f,       0.5f,       0.9f },
    108. 

  108. <a name="l00094"></a>00094   { <span class="stringliteral">"Test 2"</span>,          0.4f,      0.2f,       0.5f,       0.8f },
    109. 

  109. <a name="l00095"></a>00095   { <span class="stringliteral">"Test 3"</span>,          0.6f,      0.4f,       0.5f,       0.7f },
    110. 

  110. <a name="l00096"></a>00096   { <span class="stringliteral">"Test 4"</span>,          0.8f,      0.7f,       0.5f,       0.6f },
    111. 

  111. <a name="l00097"></a>00097   { <span class="stringliteral">"Test 5"</span>,          0.8f,      1.0f,       0.5f,       0.5f },
    112. 

  112. <a name="l00098"></a>00098   { NULL, 0.0f, 0.0f, 0.0f, 0.0f }
    113. 

  113. <a name="l00099"></a>00099 };
    114. 

  114. <a name="l00100"></a>00100 
    115. 

  115. <a name="l00101"></a>00101 
    116. 

  116. <a name="l00102"></a>00102 <span class="comment">/***************************************************************</span>
    117. 

  117. <a name="l00103"></a>00103 <span class="comment"> *</span>
    118. 

  118. <a name="l00104"></a>00104 <span class="comment"> *               INITIALIZATION &amp; UTILITIES</span>
    119. 

  119. <a name="l00105"></a>00105 <span class="comment"> */</span>
    120. 

  120. <a name="l00106"></a>00106 
    121. 

  121. <a name="l00107"></a>00107 
    122. 

  122. <a name="l00108"></a>00108 <span class="keywordtype">void</span> fluid_synth_settings(fluid_settings_t* settings)
    123. 

  123. <a name="l00109"></a>00109 {
    124. 

  124. <a name="l00110"></a>00110   fluid_settings_register_str(settings, <span class="stringliteral">"synth.verbose"</span>, <span class="stringliteral">"no"</span>, 0, NULL, NULL);
    125. 

  125. <a name="l00111"></a>00111   fluid_settings_register_str(settings, <span class="stringliteral">"synth.dump"</span>, <span class="stringliteral">"no"</span>, 0, NULL, NULL);
    126. 

  126. <a name="l00112"></a>00112   fluid_settings_register_str(settings, <span class="stringliteral">"synth.reverb.active"</span>, <span class="stringliteral">"yes"</span>, 0, NULL, NULL);
    127. 

  127. <a name="l00113"></a>00113   fluid_settings_register_str(settings, <span class="stringliteral">"synth.chorus.active"</span>, <span class="stringliteral">"yes"</span>, 0, NULL, NULL);
    128. 

  128. <a name="l00114"></a>00114   fluid_settings_register_str(settings, <span class="stringliteral">"synth.ladspa.active"</span>, <span class="stringliteral">"no"</span>, 0, NULL, NULL);
    129. 

  129. <a name="l00115"></a>00115 
    130. 

  130. <a name="l00116"></a>00116   fluid_settings_register_int(settings, <span class="stringliteral">"synth.polyphony"</span>,
    131. 

  131. <a name="l00117"></a>00117                              256, 16, 4096, 0, NULL, NULL);
    132. 

  132. <a name="l00118"></a>00118   fluid_settings_register_int(settings, <span class="stringliteral">"synth.midi-channels"</span>,
    133. 

  133. <a name="l00119"></a>00119                              16, 16, 256, 0, NULL, NULL);
    134. 

  134. <a name="l00120"></a>00120   fluid_settings_register_num(settings, <span class="stringliteral">"synth.gain"</span>,
    135. 

  135. <a name="l00121"></a>00121                              0.2f, 0.0f, 10.0f,
    136. 

  136. <a name="l00122"></a>00122                              0, NULL, NULL);
    137. 

  137. <a name="l00123"></a>00123   fluid_settings_register_int(settings, <span class="stringliteral">"synth.audio-channels"</span>,
    138. 

  138. <a name="l00124"></a>00124                              1, 1, 256, 0, NULL, NULL);
    139. 

  139. <a name="l00125"></a>00125   fluid_settings_register_int(settings, <span class="stringliteral">"synth.audio-groups"</span>,
    140. 

  140. <a name="l00126"></a>00126                              1, 1, 256, 0, NULL, NULL);
    141. 

  141. <a name="l00127"></a>00127   fluid_settings_register_int(settings, <span class="stringliteral">"synth.effects-channels"</span>,
    142. 

  142. <a name="l00128"></a>00128                              2, 2, 2, 0, NULL, NULL);
    143. 

  143. <a name="l00129"></a>00129   fluid_settings_register_num(settings, <span class="stringliteral">"synth.sample-rate"</span>,
    144. 

  144. <a name="l00130"></a>00130                              44100.0f, 22050.0f, 96000.0f,
    145. 

  145. <a name="l00131"></a>00131                              0, NULL, NULL);
    146. 

  146. <a name="l00132"></a>00132 }
    147. 

  147. <a name="l00133"></a>00133 
    148. 

  148. <a name="l00134"></a>00134 <span class="comment">/*</span>
    149. 

  149. <a name="l00135"></a>00135 <span class="comment"> * fluid_version</span>
    150. 

  150. <a name="l00136"></a>00136 <span class="comment"> */</span>
    151. 

  151. <a name="l00137"></a>00137 <span class="keywordtype">void</span> fluid_version(<span class="keywordtype">int</span> *major, <span class="keywordtype">int</span> *minor, <span class="keywordtype">int</span> *micro)
    152. 

  152. <a name="l00138"></a>00138 {
    153. 

  153. <a name="l00139"></a>00139   *major = FLUIDSYNTH_VERSION_MAJOR;
    154. 

  154. <a name="l00140"></a>00140   *minor = FLUIDSYNTH_VERSION_MINOR;
    155. 

  155. <a name="l00141"></a>00141   *micro = FLUIDSYNTH_VERSION_MICRO;
    156. 

  156. <a name="l00142"></a>00142 }
    157. 

  157. <a name="l00143"></a>00143 
    158. 

  158. <a name="l00144"></a>00144 <span class="comment">/*</span>
    159. 

  159. <a name="l00145"></a>00145 <span class="comment"> * fluid_version_str</span>
    160. 

  160. <a name="l00146"></a>00146 <span class="comment"> */</span>
    161. 

  161. <a name="l00147"></a>00147 <span class="keywordtype">char</span>* fluid_version_str(<span class="keywordtype">void</span>)
    162. 

  162. <a name="l00148"></a>00148 {
    163. 

  163. <a name="l00149"></a>00149   <span class="keywordflow">return</span> FLUIDSYNTH_VERSION;
    164. 

  164. <a name="l00150"></a>00150 }
    165. 

  165. <a name="l00151"></a>00151 
    166. 

  166. <a name="l00152"></a>00152 
    167. 

  167. <a name="l00153"></a>00153 <span class="comment">/*</span>
    168. 

  168. <a name="l00154"></a>00154 <span class="comment"> * void fluid_synth_init</span>
    169. 

  169. <a name="l00155"></a>00155 <span class="comment"> *</span>
    170. 

  170. <a name="l00156"></a>00156 <span class="comment"> * Does all the initialization for this module.</span>
    171. 

  171. <a name="l00157"></a>00157 <span class="comment"> */</span>
    172. 

  172. <a name="l00158"></a>00158 <span class="keyword">static</span> <span class="keywordtype">void</span>
    173. 

  173. <a name="l00159"></a>00159 fluid_synth_init()
    174. 

  174. <a name="l00160"></a>00160 {
    175. 

  175. <a name="l00161"></a>00161   fluid_synth_initialized++;
    176. 

  176. <a name="l00162"></a>00162 
    177. 

  177. <a name="l00163"></a>00163 <span class="preprocessor">#ifdef TRAP_ON_FPE</span>
    178. 

  178. <a name="l00164"></a>00164 <span class="preprocessor"></span>  <span class="comment">/* Turn on floating point exception traps */</span>
    179. 

  179. <a name="l00165"></a>00165   feenableexcept (FE_DIVBYZERO | FE_UNDERFLOW | FE_OVERFLOW | FE_INVALID);
    180. 

  180. <a name="l00166"></a>00166 <span class="preprocessor">#endif</span>
    181. 

  181. <a name="l00167"></a>00167 <span class="preprocessor"></span>
    182. 

  182. <a name="l00168"></a>00168   fluid_conversion_config();
    183. 

  183. <a name="l00169"></a>00169 
    184. 

  184. <a name="l00170"></a>00170   fluid_dsp_float_config();
    185. 

  185. <a name="l00171"></a>00171 
    186. 

  186. <a name="l00172"></a>00172   fluid_sys_config();
    187. 

  187. <a name="l00173"></a>00173 
    188. 

  188. <a name="l00174"></a>00174   init_dither();
    189. 

  189. <a name="l00175"></a>00175 
    190. 

  190. <a name="l00176"></a>00176 
    191. 

  191. <a name="l00177"></a>00177   <span class="comment">/* SF2.01 page 53 section 8.4.1: MIDI Note-On Velocity to Initial Attenuation */</span>
    192. 

  192. <a name="l00178"></a>00178   fluid_mod_set_source1(&amp;default_vel2att_mod, <span class="comment">/* The modulator we are programming here */</span>
    193. 

  193. <a name="l00179"></a>00179                        FLUID_MOD_VELOCITY,    <span class="comment">/* Source. VELOCITY corresponds to 'index=2'. */</span>
    194. 

  194. <a name="l00180"></a>00180                        FLUID_MOD_GC           <span class="comment">/* Not a MIDI continuous controller */</span>
    195. 

  195. <a name="l00181"></a>00181                        | FLUID_MOD_CONCAVE    <span class="comment">/* Curve shape. Corresponds to 'type=1' */</span>
    196. 

  196. <a name="l00182"></a>00182                        | FLUID_MOD_UNIPOLAR   <span class="comment">/* Polarity. Corresponds to 'P=0' */</span>
    197. 

  197. <a name="l00183"></a>00183                        | FLUID_MOD_NEGATIVE   <span class="comment">/* Direction. Corresponds to 'D=1' */</span>
    198. 

  198. <a name="l00184"></a>00184                        );
    199. 

  199. <a name="l00185"></a>00185   fluid_mod_set_source2(&amp;default_vel2att_mod, 0, 0); <span class="comment">/* No 2nd source */</span>
    200. 

  200. <a name="l00186"></a>00186   fluid_mod_set_dest(&amp;default_vel2att_mod, <a class="code" href="gen_8h.html#d17a24ae3b25f3b8cc5762f818eef9b42db65ad593aeff4e814f9a7b7324c0df" title="Initial volume attenuation.">GEN_ATTENUATION</a>);  <span class="comment">/* Target: Initial attenuation */</span>
    201. 

  201. <a name="l00187"></a>00187   fluid_mod_set_amount(&amp;default_vel2att_mod, 960.0);          <span class="comment">/* Modulation amount: 960 */</span>
    202. 

  202. <a name="l00188"></a>00188 
    203. 

  203. <a name="l00189"></a>00189 
    204. 

  204. <a name="l00190"></a>00190 
    205. 

  205. <a name="l00191"></a>00191   <span class="comment">/* SF2.01 page 53 section 8.4.2: MIDI Note-On Velocity to Filter Cutoff</span>
    206. 

  206. <a name="l00192"></a>00192 <span class="comment">   * Have to make a design decision here. The specs don't make any sense this way or another.</span>
    207. 

  207. <a name="l00193"></a>00193 <span class="comment">   * One sound font, 'Kingston Piano', which has been praised for its quality, tries to</span>
    208. 

  208. <a name="l00194"></a>00194 <span class="comment">   * override this modulator with an amount of 0 and positive polarity (instead of what</span>
    209. 

  209. <a name="l00195"></a>00195 <span class="comment">   * the specs say, D=1) for the secondary source.</span>
    210. 

  210. <a name="l00196"></a>00196 <span class="comment">   * So if we change the polarity to 'positive', one of the best free sound fonts works...</span>
    211. 

  211. <a name="l00197"></a>00197 <span class="comment">   */</span>
    212. 

  212. <a name="l00198"></a>00198   fluid_mod_set_source1(&amp;default_vel2filter_mod, FLUID_MOD_VELOCITY, <span class="comment">/* Index=2 */</span>
    213. 

  213. <a name="l00199"></a>00199                        FLUID_MOD_GC                        <span class="comment">/* CC=0 */</span>
    214. 

  214. <a name="l00200"></a>00200                        | FLUID_MOD_LINEAR                  <span class="comment">/* type=0 */</span>
    215. 

  215. <a name="l00201"></a>00201                        | FLUID_MOD_UNIPOLAR                <span class="comment">/* P=0 */</span>
    216. 

  216. <a name="l00202"></a>00202                        | FLUID_MOD_NEGATIVE                <span class="comment">/* D=1 */</span>
    217. 

  217. <a name="l00203"></a>00203                        );
    218. 

  218. <a name="l00204"></a>00204   fluid_mod_set_source2(&amp;default_vel2filter_mod, FLUID_MOD_VELOCITY, <span class="comment">/* Index=2 */</span>
    219. 

  219. <a name="l00205"></a>00205                        FLUID_MOD_GC                                 <span class="comment">/* CC=0 */</span>
    220. 

  220. <a name="l00206"></a>00206                        | FLUID_MOD_SWITCH                           <span class="comment">/* type=3 */</span>
    221. 

  221. <a name="l00207"></a>00207                        | FLUID_MOD_UNIPOLAR                         <span class="comment">/* P=0 */</span>
    222. 

  222. <a name="l00208"></a>00208                        <span class="comment">// do not remove       | FLUID_MOD_NEGATIVE                         /* D=1 */</span>
    223. 

  223. <a name="l00209"></a>00209                        | FLUID_MOD_POSITIVE                         <span class="comment">/* D=0 */</span>
    224. 

  224. <a name="l00210"></a>00210                        );
    225. 

  225. <a name="l00211"></a>00211   fluid_mod_set_dest(&amp;default_vel2filter_mod, <a class="code" href="gen_8h.html#d17a24ae3b25f3b8cc5762f818eef9b4e43e689b0b6349a676d26ea3096ed8d2" title="Filter cutoff.">GEN_FILTERFC</a>);        <span class="comment">/* Target: Initial filter cutoff */</span>
    226. 

  226. <a name="l00212"></a>00212   fluid_mod_set_amount(&amp;default_vel2filter_mod, -2400);
    227. 

  227. <a name="l00213"></a>00213 
    228. 

  228. <a name="l00214"></a>00214 
    229. 

  229. <a name="l00215"></a>00215 
    230. 

  230. <a name="l00216"></a>00216   <span class="comment">/* SF2.01 page 53 section 8.4.3: MIDI Channel pressure to Vibrato LFO pitch depth */</span>
    231. 

  231. <a name="l00217"></a>00217   fluid_mod_set_source1(&amp;default_at2viblfo_mod, FLUID_MOD_CHANNELPRESSURE, <span class="comment">/* Index=13 */</span>
    232. 

  232. <a name="l00218"></a>00218                        FLUID_MOD_GC                        <span class="comment">/* CC=0 */</span>
    233. 

  233. <a name="l00219"></a>00219                        | FLUID_MOD_LINEAR                  <span class="comment">/* type=0 */</span>
    234. 

  234. <a name="l00220"></a>00220                        | FLUID_MOD_UNIPOLAR                <span class="comment">/* P=0 */</span>
    235. 

  235. <a name="l00221"></a>00221                        | FLUID_MOD_POSITIVE                <span class="comment">/* D=0 */</span>
    236. 

  236. <a name="l00222"></a>00222                        );
    237. 

  237. <a name="l00223"></a>00223   fluid_mod_set_source2(&amp;default_at2viblfo_mod, 0,0); <span class="comment">/* no second source */</span>
    238. 

  238. <a name="l00224"></a>00224   fluid_mod_set_dest(&amp;default_at2viblfo_mod, <a class="code" href="gen_8h.html#d17a24ae3b25f3b8cc5762f818eef9b499387606556a9024de640b4519f7e559" title="Vibrato LFO to pitch.">GEN_VIBLFOTOPITCH</a>);        <span class="comment">/* Target: Vib. LFO =&gt; pitch */</span>
    239. 

  239. <a name="l00225"></a>00225   fluid_mod_set_amount(&amp;default_at2viblfo_mod, 50);
    240. 

  240. <a name="l00226"></a>00226 
    241. 

  241. <a name="l00227"></a>00227 
    242. 

  242. <a name="l00228"></a>00228 
    243. 

  243. <a name="l00229"></a>00229   <span class="comment">/* SF2.01 page 53 section 8.4.4: Mod wheel (Controller 1) to Vibrato LFO pitch depth */</span>
    244. 

  244. <a name="l00230"></a>00230   fluid_mod_set_source1(&amp;default_mod2viblfo_mod, 1, <span class="comment">/* Index=1 */</span>
    245. 

  245. <a name="l00231"></a>00231                        FLUID_MOD_CC                        <span class="comment">/* CC=1 */</span>
    246. 

  246. <a name="l00232"></a>00232                        | FLUID_MOD_LINEAR                  <span class="comment">/* type=0 */</span>
    247. 

  247. <a name="l00233"></a>00233                        | FLUID_MOD_UNIPOLAR                <span class="comment">/* P=0 */</span>
    248. 

  248. <a name="l00234"></a>00234                        | FLUID_MOD_POSITIVE                <span class="comment">/* D=0 */</span>
    249. 

  249. <a name="l00235"></a>00235                        );
    250. 

  250. <a name="l00236"></a>00236   fluid_mod_set_source2(&amp;default_mod2viblfo_mod, 0,0); <span class="comment">/* no second source */</span>
    251. 

  251. <a name="l00237"></a>00237   fluid_mod_set_dest(&amp;default_mod2viblfo_mod, <a class="code" href="gen_8h.html#d17a24ae3b25f3b8cc5762f818eef9b499387606556a9024de640b4519f7e559" title="Vibrato LFO to pitch.">GEN_VIBLFOTOPITCH</a>);        <span class="comment">/* Target: Vib. LFO =&gt; pitch */</span>
    252. 

  252. <a name="l00238"></a>00238   fluid_mod_set_amount(&amp;default_mod2viblfo_mod, 50);
    253. 

  253. <a name="l00239"></a>00239 
    254. 

  254. <a name="l00240"></a>00240 
    255. 

  255. <a name="l00241"></a>00241 
    256. 

  256. <a name="l00242"></a>00242   <span class="comment">/* SF2.01 page 55 section 8.4.5: MIDI continuous controller 7 to initial attenuation*/</span>
    257. 

  257. <a name="l00243"></a>00243   fluid_mod_set_source1(&amp;default_att_mod, 7,                     <span class="comment">/* index=7 */</span>
    258. 

  258. <a name="l00244"></a>00244                        FLUID_MOD_CC                              <span class="comment">/* CC=1 */</span>
    259. 

  259. <a name="l00245"></a>00245                        | FLUID_MOD_CONCAVE                       <span class="comment">/* type=1 */</span>
    260. 

  260. <a name="l00246"></a>00246                        | FLUID_MOD_UNIPOLAR                      <span class="comment">/* P=0 */</span>
    261. 

  261. <a name="l00247"></a>00247                        | FLUID_MOD_NEGATIVE                      <span class="comment">/* D=1 */</span>
    262. 

  262. <a name="l00248"></a>00248                        );
    263. 

  263. <a name="l00249"></a>00249   fluid_mod_set_source2(&amp;default_att_mod, 0, 0);                 <span class="comment">/* No second source */</span>
    264. 

  264. <a name="l00250"></a>00250   fluid_mod_set_dest(&amp;default_att_mod, <a class="code" href="gen_8h.html#d17a24ae3b25f3b8cc5762f818eef9b42db65ad593aeff4e814f9a7b7324c0df" title="Initial volume attenuation.">GEN_ATTENUATION</a>);         <span class="comment">/* Target: Initial attenuation */</span>
    265. 

  265. <a name="l00251"></a>00251   fluid_mod_set_amount(&amp;default_att_mod, 960.0);                 <span class="comment">/* Amount: 960 */</span>
    266. 

  266. <a name="l00252"></a>00252 
    267. 

  267. <a name="l00253"></a>00253 
    268. 

  268. <a name="l00254"></a>00254 
    269. 

  269. <a name="l00255"></a>00255   <span class="comment">/* SF2.01 page 55 section 8.4.6 MIDI continuous controller 10 to Pan Position */</span>
    270. 

  270. <a name="l00256"></a>00256   fluid_mod_set_source1(&amp;default_pan_mod, 10,                    <span class="comment">/* index=10 */</span>
    271. 

  271. <a name="l00257"></a>00257                        FLUID_MOD_CC                              <span class="comment">/* CC=1 */</span>
    272. 

  272. <a name="l00258"></a>00258                        | FLUID_MOD_LINEAR                        <span class="comment">/* type=0 */</span>
    273. 

  273. <a name="l00259"></a>00259                        | FLUID_MOD_BIPOLAR                       <span class="comment">/* P=1 */</span>
    274. 

  274. <a name="l00260"></a>00260                        | FLUID_MOD_POSITIVE                      <span class="comment">/* D=0 */</span>
    275. 

  275. <a name="l00261"></a>00261                        );
    276. 

  276. <a name="l00262"></a>00262   fluid_mod_set_source2(&amp;default_pan_mod, 0, 0);                 <span class="comment">/* No second source */</span>
    277. 

  277. <a name="l00263"></a>00263   fluid_mod_set_dest(&amp;default_pan_mod, <a class="code" href="gen_8h.html#d17a24ae3b25f3b8cc5762f818eef9b45b713ab8c931017d98f11b5ed5a81fb1" title="Stereo panning.">GEN_PAN</a>);                 <span class="comment">/* Target: pan */</span>
    278. 

  278. <a name="l00264"></a>00264   <span class="comment">/* Amount: 500. The SF specs $8.4.6, p. 55 syas: "Amount = 1000</span>
    279. 

  279. <a name="l00265"></a>00265 <span class="comment">     tenths of a percent". The center value (64) corresponds to 50%,</span>
    280. 

  280. <a name="l00266"></a>00266 <span class="comment">     so it follows that amount = 50% x 1000/% = 500. */</span>
    281. 

  281. <a name="l00267"></a>00267   fluid_mod_set_amount(&amp;default_pan_mod, 500.0);
    282. 

  282. <a name="l00268"></a>00268 
    283. 

  283. <a name="l00269"></a>00269 
    284. 

  284. <a name="l00270"></a>00270   <span class="comment">/* SF2.01 page 55 section 8.4.7: MIDI continuous controller 11 to initial attenuation*/</span>
    285. 

  285. <a name="l00271"></a>00271   fluid_mod_set_source1(&amp;default_expr_mod, 11,                     <span class="comment">/* index=11 */</span>
    286. 

  286. <a name="l00272"></a>00272                        FLUID_MOD_CC                              <span class="comment">/* CC=1 */</span>
    287. 

  287. <a name="l00273"></a>00273                        | FLUID_MOD_CONCAVE                       <span class="comment">/* type=1 */</span>
    288. 

  288. <a name="l00274"></a>00274                        | FLUID_MOD_UNIPOLAR                      <span class="comment">/* P=0 */</span>
    289. 

  289. <a name="l00275"></a>00275                        | FLUID_MOD_NEGATIVE                      <span class="comment">/* D=1 */</span>
    290. 

  290. <a name="l00276"></a>00276                        );
    291. 

  291. <a name="l00277"></a>00277   fluid_mod_set_source2(&amp;default_expr_mod, 0, 0);                 <span class="comment">/* No second source */</span>
    292. 

  292. <a name="l00278"></a>00278   fluid_mod_set_dest(&amp;default_expr_mod, <a class="code" href="gen_8h.html#d17a24ae3b25f3b8cc5762f818eef9b42db65ad593aeff4e814f9a7b7324c0df" title="Initial volume attenuation.">GEN_ATTENUATION</a>);         <span class="comment">/* Target: Initial attenuation */</span>
    293. 

  293. <a name="l00279"></a>00279   fluid_mod_set_amount(&amp;default_expr_mod, 960.0);                 <span class="comment">/* Amount: 960 */</span>
    294. 

  294. <a name="l00280"></a>00280 
    295. 

  295. <a name="l00281"></a>00281 
    296. 

  296. <a name="l00282"></a>00282 
    297. 

  297. <a name="l00283"></a>00283   <span class="comment">/* SF2.01 page 55 section 8.4.8: MIDI continuous controller 91 to Reverb send */</span>
    298. 

  298. <a name="l00284"></a>00284   fluid_mod_set_source1(&amp;default_reverb_mod, 91,                 <span class="comment">/* index=91 */</span>
    299. 

  299. <a name="l00285"></a>00285                        FLUID_MOD_CC                              <span class="comment">/* CC=1 */</span>
    300. 

  300. <a name="l00286"></a>00286                        | FLUID_MOD_LINEAR                        <span class="comment">/* type=0 */</span>
    301. 

  301. <a name="l00287"></a>00287                        | FLUID_MOD_UNIPOLAR                      <span class="comment">/* P=0 */</span>
    302. 

  302. <a name="l00288"></a>00288                        | FLUID_MOD_POSITIVE                      <span class="comment">/* D=0 */</span>
    303. 

  303. <a name="l00289"></a>00289                        );
    304. 

  304. <a name="l00290"></a>00290   fluid_mod_set_source2(&amp;default_reverb_mod, 0, 0);              <span class="comment">/* No second source */</span>
    305. 

  305. <a name="l00291"></a>00291   fluid_mod_set_dest(&amp;default_reverb_mod, <a class="code" href="gen_8h.html#d17a24ae3b25f3b8cc5762f818eef9b48de830acd064933f55e0c1615d1e7f78" title="Reverb send amount.">GEN_REVERBSEND</a>);       <span class="comment">/* Target: Reverb send */</span>
    306. 

  306. <a name="l00292"></a>00292   fluid_mod_set_amount(&amp;default_reverb_mod, 200);                <span class="comment">/* Amount: 200 ('tenths of a percent') */</span>
    307. 

  307. <a name="l00293"></a>00293 
    308. 

  308. <a name="l00294"></a>00294 
    309. 

  309. <a name="l00295"></a>00295 
    310. 

  310. <a name="l00296"></a>00296   <span class="comment">/* SF2.01 page 55 section 8.4.9: MIDI continuous controller 93 to Reverb send */</span>
    311. 

  311. <a name="l00297"></a>00297   fluid_mod_set_source1(&amp;default_chorus_mod, 93,                 <span class="comment">/* index=93 */</span>
    312. 

  312. <a name="l00298"></a>00298                        FLUID_MOD_CC                              <span class="comment">/* CC=1 */</span>
    313. 

  313. <a name="l00299"></a>00299                        | FLUID_MOD_LINEAR                        <span class="comment">/* type=0 */</span>
    314. 

  314. <a name="l00300"></a>00300                        | FLUID_MOD_UNIPOLAR                      <span class="comment">/* P=0 */</span>
    315. 

  315. <a name="l00301"></a>00301                        | FLUID_MOD_POSITIVE                      <span class="comment">/* D=0 */</span>
    316. 

  316. <a name="l00302"></a>00302                        );
    317. 

  317. <a name="l00303"></a>00303   fluid_mod_set_source2(&amp;default_chorus_mod, 0, 0);              <span class="comment">/* No second source */</span>
    318. 

  318. <a name="l00304"></a>00304   fluid_mod_set_dest(&amp;default_chorus_mod, <a class="code" href="gen_8h.html#d17a24ae3b25f3b8cc5762f818eef9b420dc580d6c53d30eb97efe3e910793b6" title="Chorus send amount.">GEN_CHORUSSEND</a>);       <span class="comment">/* Target: Chorus */</span>
    319. 

  319. <a name="l00305"></a>00305   fluid_mod_set_amount(&amp;default_chorus_mod, 200);                <span class="comment">/* Amount: 200 ('tenths of a percent') */</span>
    320. 

  320. <a name="l00306"></a>00306 
    321. 

  321. <a name="l00307"></a>00307 
    322. 

  322. <a name="l00308"></a>00308 
    323. 

  323. <a name="l00309"></a>00309   <span class="comment">/* SF2.01 page 57 section 8.4.10 MIDI Pitch Wheel to Initial Pitch ... */</span>
    324. 

  324. <a name="l00310"></a>00310   fluid_mod_set_source1(&amp;default_pitch_bend_mod, FLUID_MOD_PITCHWHEEL, <span class="comment">/* Index=14 */</span>
    325. 

  325. <a name="l00311"></a>00311                        FLUID_MOD_GC                              <span class="comment">/* CC =0 */</span>
    326. 

  326. <a name="l00312"></a>00312                        | FLUID_MOD_LINEAR                        <span class="comment">/* type=0 */</span>
    327. 

  327. <a name="l00313"></a>00313                        | FLUID_MOD_BIPOLAR                       <span class="comment">/* P=1 */</span>
    328. 

  328. <a name="l00314"></a>00314                        | FLUID_MOD_POSITIVE                      <span class="comment">/* D=0 */</span>
    329. 

  329. <a name="l00315"></a>00315                        );
    330. 

  330. <a name="l00316"></a>00316   fluid_mod_set_source2(&amp;default_pitch_bend_mod, FLUID_MOD_PITCHWHEELSENS,  <span class="comment">/* Index = 16 */</span>
    331. 

  331. <a name="l00317"></a>00317                        FLUID_MOD_GC                                        <span class="comment">/* CC=0 */</span>
    332. 

  332. <a name="l00318"></a>00318                        | FLUID_MOD_LINEAR                                  <span class="comment">/* type=0 */</span>
    333. 

  333. <a name="l00319"></a>00319                        | FLUID_MOD_UNIPOLAR                                <span class="comment">/* P=0 */</span>
    334. 

  334. <a name="l00320"></a>00320                        | FLUID_MOD_POSITIVE                                <span class="comment">/* D=0 */</span>
    335. 

  335. <a name="l00321"></a>00321                        );
    336. 

  336. <a name="l00322"></a>00322   fluid_mod_set_dest(&amp;default_pitch_bend_mod, <a class="code" href="gen_8h.html#d17a24ae3b25f3b8cc5762f818eef9b4b9a5716b5af1baf131a6225da6687ff0" title="Pitch (NOTE: Not a real SoundFont generator).">GEN_PITCH</a>);                 <span class="comment">/* Destination: Initial pitch */</span>
    337. 

  337. <a name="l00323"></a>00323   fluid_mod_set_amount(&amp;default_pitch_bend_mod, 12700.0);                 <span class="comment">/* Amount: 12700 cents */</span>
    338. 

  338. <a name="l00324"></a>00324 }
    339. 

  339. <a name="l00325"></a>00325 
    340. 

  340. <a name="l00326"></a>00326 
    341. 

  341. <a name="l00327"></a>00327 <span class="keywordtype">int</span> fluid_synth_verify_settings(fluid_settings_t *settings)
    342. 

  342. <a name="l00328"></a>00328 {
    343. 

  343. <a name="l00329"></a>00329   <span class="keywordflow">return</span> 0;
    344. 

  344. <a name="l00330"></a>00330 }
    345. 

  345. <a name="l00331"></a>00331 
    346. 

  346. <a name="l00332"></a>00332 <span class="comment">/***************************************************************</span>
    347. 

  347. <a name="l00333"></a>00333 <span class="comment"> *</span>
    348. 

  348. <a name="l00334"></a>00334 <span class="comment"> *                      FLUID SYNTH</span>
    349. 

  349. <a name="l00335"></a>00335 <span class="comment"> */</span>
    350. 

  350. <a name="l00336"></a>00336 
    351. 

  351. <a name="l00337"></a>00337 <span class="comment">/*</span>
    352. 

  352. <a name="l00338"></a>00338 <span class="comment"> * new_fluid_synth</span>
    353. 

  353. <a name="l00339"></a>00339 <span class="comment"> */</span>
    354. 

  354. <a name="l00340"></a>00340 fluid_synth_t*
    355. 

  355. <a name="l00341"></a>00341 new_fluid_synth(fluid_settings_t *settings)
    356. 

  356. <a name="l00342"></a>00342 {
    357. 

  357. <a name="l00343"></a>00343   <span class="keywordtype">int</span> i;
    358. 

  358. <a name="l00344"></a>00344   fluid_synth_t* synth;
    359. 

  359. <a name="l00345"></a>00345   <a class="code" href="struct__fluid__sfloader__t.html">fluid_sfloader_t</a>* loader;
    360. 

  360. <a name="l00346"></a>00346 
    361. 

  361. <a name="l00347"></a>00347   <span class="comment">/* initialize all the conversion tables and other stuff */</span>
    362. 

  362. <a name="l00348"></a>00348   <span class="keywordflow">if</span> (fluid_synth_initialized == 0) {
    363. 

  363. <a name="l00349"></a>00349     fluid_synth_init();
    364. 

  364. <a name="l00350"></a>00350   }
    365. 

  365. <a name="l00351"></a>00351 
    366. 

  366. <a name="l00352"></a>00352   fluid_synth_verify_settings(settings);
    367. 

  367. <a name="l00353"></a>00353 
    368. 

  368. <a name="l00354"></a>00354   <span class="comment">/* allocate a new synthesizer object */</span>
    369. 

  369. <a name="l00355"></a>00355   synth = FLUID_NEW(fluid_synth_t);
    370. 

  370. <a name="l00356"></a>00356   <span class="keywordflow">if</span> (synth == NULL) {
    371. 

  371. <a name="l00357"></a>00357     FLUID_LOG(<a class="code" href="log_8h.html#a341232c15addd9c336131984840ed9ebc0ff48d192b3b0fc721946ccf095d25" title="Serious error occurred.">FLUID_ERR</a>, <span class="stringliteral">"Out of memory"</span>);
    372. 

  372. <a name="l00358"></a>00358     <span class="keywordflow">return</span> NULL;
    373. 

  373. <a name="l00359"></a>00359   }
    374. 

  374. <a name="l00360"></a>00360   FLUID_MEMSET(synth, 0, <span class="keyword">sizeof</span>(fluid_synth_t));
    375. 

  375. <a name="l00361"></a>00361 
    376. 

  376. <a name="l00362"></a>00362   fluid_mutex_init(synth-&gt;busy);
    377. 

  377. <a name="l00363"></a>00363 
    378. 

  378. <a name="l00364"></a>00364   synth-&gt;settings = settings;
    379. 

  379. <a name="l00365"></a>00365 
    380. 

  380. <a name="l00366"></a>00366   synth-&gt;with_reverb = fluid_settings_str_equal(settings, <span class="stringliteral">"synth.reverb.active"</span>, <span class="stringliteral">"yes"</span>);
    381. 

  381. <a name="l00367"></a>00367   synth-&gt;with_chorus = fluid_settings_str_equal(settings, <span class="stringliteral">"synth.chorus.active"</span>, <span class="stringliteral">"yes"</span>);
    382. 

  382. <a name="l00368"></a>00368   synth-&gt;verbose = fluid_settings_str_equal(settings, <span class="stringliteral">"synth.verbose"</span>, <span class="stringliteral">"yes"</span>);
    383. 

  383. <a name="l00369"></a>00369   synth-&gt;dump = fluid_settings_str_equal(settings, <span class="stringliteral">"synth.dump"</span>, <span class="stringliteral">"yes"</span>);
    384. 

  384. <a name="l00370"></a>00370 
    385. 

  385. <a name="l00371"></a>00371   fluid_settings_getint(settings, <span class="stringliteral">"synth.polyphony"</span>, &amp;synth-&gt;polyphony);
    386. 

  386. <a name="l00372"></a>00372   fluid_settings_getnum(settings, <span class="stringliteral">"synth.sample-rate"</span>, &amp;synth-&gt;sample_rate);
    387. 

  387. <a name="l00373"></a>00373   fluid_settings_getint(settings, <span class="stringliteral">"synth.midi-channels"</span>, &amp;synth-&gt;midi_channels);
    388. 

  388. <a name="l00374"></a>00374   fluid_settings_getint(settings, <span class="stringliteral">"synth.audio-channels"</span>, &amp;synth-&gt;audio_channels);
    389. 

  389. <a name="l00375"></a>00375   fluid_settings_getint(settings, <span class="stringliteral">"synth.audio-groups"</span>, &amp;synth-&gt;audio_groups);
    390. 

  390. <a name="l00376"></a>00376   fluid_settings_getint(settings, <span class="stringliteral">"synth.effects-channels"</span>, &amp;synth-&gt;effects_channels);
    391. 

  391. <a name="l00377"></a>00377   fluid_settings_getnum(settings, <span class="stringliteral">"synth.gain"</span>, &amp;synth-&gt;gain);
    392. 

  392. <a name="l00378"></a>00378 
    393. 

  393. <a name="l00379"></a>00379   <span class="comment">/* register the callbacks */</span>
    394. 

  394. <a name="l00380"></a>00380   fluid_settings_register_num(settings, <span class="stringliteral">"synth.gain"</span>,
    395. 

  395. <a name="l00381"></a>00381                               0.2f, 0.0f, 10.0f, 0,
    396. 

  396. <a name="l00382"></a>00382                               (fluid_num_update_t) fluid_synth_update_gain, synth);
    397. 

  397. <a name="l00383"></a>00383   fluid_settings_register_int(settings, <span class="stringliteral">"synth.polyphony"</span>,
    398. 

  398. <a name="l00384"></a>00384                               synth-&gt;polyphony, 16, 4096, 0,
    399. 

  399. <a name="l00385"></a>00385                               (fluid_int_update_t) fluid_synth_update_polyphony,
    400. 

  400. <a name="l00386"></a>00386                               synth);
    401. 

  401. <a name="l00387"></a>00387 
    402. 

  402. <a name="l00388"></a>00388   <span class="comment">/* do some basic sanity checking on the settings */</span>
    403. 

  403. <a name="l00389"></a>00389 
    404. 

  404. <a name="l00390"></a>00390   <span class="keywordflow">if</span> (synth-&gt;midi_channels % 16 != 0) {
    405. 

  405. <a name="l00391"></a>00391     <span class="keywordtype">int</span> n = synth-&gt;midi_channels / 16;
    406. 

  406. <a name="l00392"></a>00392     synth-&gt;midi_channels = (n + 1) * 16;
    407. 

  407. <a name="l00393"></a>00393     fluid_settings_setint(settings, <span class="stringliteral">"synth.midi-channels"</span>, synth-&gt;midi_channels);
    408. 

  408. <a name="l00394"></a>00394     FLUID_LOG(<a class="code" href="log_8h.html#a341232c15addd9c336131984840ed9e394460be1ec74fce15e1ff683606df0f" title="Warning.">FLUID_WARN</a>, <span class="stringliteral">"Requested number of MIDI channels is not a multiple of 16. "</span>
    409. 

  409. <a name="l00395"></a>00395              <span class="stringliteral">"I'll increase the number of channels to the next multiple."</span>);
    410. 

  410. <a name="l00396"></a>00396   }
    411. 

  411. <a name="l00397"></a>00397 
    412. 

  412. <a name="l00398"></a>00398   <span class="keywordflow">if</span> (synth-&gt;audio_channels &lt; 1) {
    413. 

  413. <a name="l00399"></a>00399     FLUID_LOG(<a class="code" href="log_8h.html#a341232c15addd9c336131984840ed9e394460be1ec74fce15e1ff683606df0f" title="Warning.">FLUID_WARN</a>, <span class="stringliteral">"Requested number of audio channels is smaller than 1. "</span>
    414. 

  414. <a name="l00400"></a>00400              <span class="stringliteral">"Changing this setting to 1."</span>);
    415. 

  415. <a name="l00401"></a>00401     synth-&gt;audio_channels = 1;
    416. 

  416. <a name="l00402"></a>00402   } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (synth-&gt;audio_channels &gt; 128) {
    417. 

  417. <a name="l00403"></a>00403     FLUID_LOG(<a class="code" href="log_8h.html#a341232c15addd9c336131984840ed9e394460be1ec74fce15e1ff683606df0f" title="Warning.">FLUID_WARN</a>, <span class="stringliteral">"Requested number of audio channels is too big (%d). "</span>
    418. 

  418. <a name="l00404"></a>00404              <span class="stringliteral">"Limiting this setting to 128."</span>, synth-&gt;audio_channels);
    419. 

  419. <a name="l00405"></a>00405     synth-&gt;audio_channels = 128;
    420. 

  420. <a name="l00406"></a>00406   }
    421. 

  421. <a name="l00407"></a>00407 
    422. 

  422. <a name="l00408"></a>00408   <span class="keywordflow">if</span> (synth-&gt;audio_groups &lt; 1) {
    423. 

  423. <a name="l00409"></a>00409     FLUID_LOG(<a class="code" href="log_8h.html#a341232c15addd9c336131984840ed9e394460be1ec74fce15e1ff683606df0f" title="Warning.">FLUID_WARN</a>, <span class="stringliteral">"Requested number of audio groups is smaller than 1. "</span>
    424. 

  424. <a name="l00410"></a>00410              <span class="stringliteral">"Changing this setting to 1."</span>);
    425. 

  425. <a name="l00411"></a>00411     synth-&gt;audio_groups = 1;
    426. 

  426. <a name="l00412"></a>00412   } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (synth-&gt;audio_groups &gt; 128) {
    427. 

  427. <a name="l00413"></a>00413     FLUID_LOG(<a class="code" href="log_8h.html#a341232c15addd9c336131984840ed9e394460be1ec74fce15e1ff683606df0f" title="Warning.">FLUID_WARN</a>, <span class="stringliteral">"Requested number of audio groups is too big (%d). "</span>
    428. 

  428. <a name="l00414"></a>00414              <span class="stringliteral">"Limiting this setting to 128."</span>, synth-&gt;audio_groups);
    429. 

  429. <a name="l00415"></a>00415     synth-&gt;audio_groups = 128;
    430. 

  430. <a name="l00416"></a>00416   }
    431. 

  431. <a name="l00417"></a>00417 
    432. 

  432. <a name="l00418"></a>00418   <span class="keywordflow">if</span> (synth-&gt;effects_channels != 2) {
    433. 

  433. <a name="l00419"></a>00419     FLUID_LOG(<a class="code" href="log_8h.html#a341232c15addd9c336131984840ed9e394460be1ec74fce15e1ff683606df0f" title="Warning.">FLUID_WARN</a>, <span class="stringliteral">"Invalid number of effects channels (%d)."</span>
    434. 

  434. <a name="l00420"></a>00420              <span class="stringliteral">"Setting effects channels to 2."</span>, synth-&gt;effects_channels);
    435. 

  435. <a name="l00421"></a>00421     synth-&gt;effects_channels = 2;
    436. 

  436. <a name="l00422"></a>00422   }
    437. 

  437. <a name="l00423"></a>00423 
    438. 

  438. <a name="l00424"></a>00424 
    439. 

  439. <a name="l00425"></a>00425   <span class="comment">/* The number of buffers is determined by the higher number of nr</span>
    440. 

  440. <a name="l00426"></a>00426 <span class="comment">   * groups / nr audio channels.  If LADSPA is unused, they should be</span>
    441. 

  441. <a name="l00427"></a>00427 <span class="comment">   * the same. */</span>
    442. 

  442. <a name="l00428"></a>00428   synth-&gt;nbuf = synth-&gt;audio_channels;
    443. 

  443. <a name="l00429"></a>00429   <span class="keywordflow">if</span> (synth-&gt;audio_groups &gt; synth-&gt;nbuf) {
    444. 

  444. <a name="l00430"></a>00430     synth-&gt;nbuf = synth-&gt;audio_groups;
    445. 

  445. <a name="l00431"></a>00431   }
    446. 

  446. <a name="l00432"></a>00432 
    447. 

  447. <a name="l00433"></a>00433 <span class="preprocessor">#ifdef LADSPA</span>
    448. 

  448. <a name="l00434"></a>00434 <span class="preprocessor"></span>  <span class="comment">/* Create and initialize the Fx unit.*/</span>
    449. 

  449. <a name="l00435"></a>00435   synth-&gt;LADSPA_FxUnit = new_fluid_LADSPA_FxUnit(synth);
    450. 

  450. <a name="l00436"></a>00436 <span class="preprocessor">#endif</span>
    451. 

  451. <a name="l00437"></a>00437 <span class="preprocessor"></span>
    452. 

  452. <a name="l00438"></a>00438   <span class="comment">/* as soon as the synth is created it starts playing. */</span>
    453. 

  453. <a name="l00439"></a>00439   synth-&gt;state = FLUID_SYNTH_PLAYING;
    454. 

  454. <a name="l00440"></a>00440   synth-&gt;sfont = NULL;
    455. 

  455. <a name="l00441"></a>00441   synth-&gt;noteid = 0;
    456. 

  456. <a name="l00442"></a>00442   synth-&gt;ticks = 0;
    457. 

  457. <a name="l00443"></a>00443   synth-&gt;tuning = NULL;
    458. 

  458. <a name="l00444"></a>00444 
    459. 

  459. <a name="l00445"></a>00445   <span class="comment">/* allocate and add the default sfont loader */</span>
    460. 

  460. <a name="l00446"></a>00446   loader = new_fluid_defsfloader();
    461. 

  461. <a name="l00447"></a>00447 
    462. 

  462. <a name="l00448"></a>00448   <span class="keywordflow">if</span> (loader == NULL) {
    463. 

  463. <a name="l00449"></a>00449     FLUID_LOG(<a class="code" href="log_8h.html#a341232c15addd9c336131984840ed9e394460be1ec74fce15e1ff683606df0f" title="Warning.">FLUID_WARN</a>, <span class="stringliteral">"Failed to create the default SoundFont loader"</span>);
    464. 

  464. <a name="l00450"></a>00450   } <span class="keywordflow">else</span> {
    465. 

  465. <a name="l00451"></a>00451     fluid_synth_add_sfloader(synth, loader);
    466. 

  466. <a name="l00452"></a>00452   }
    467. 

  467. <a name="l00453"></a>00453 
    468. 

  468. <a name="l00454"></a>00454   <span class="comment">/* allocate all channel objects */</span>
    469. 

  469. <a name="l00455"></a>00455   synth-&gt;channel = FLUID_ARRAY(fluid_channel_t*, synth-&gt;midi_channels);
    470. 

  470. <a name="l00456"></a>00456   <span class="keywordflow">if</span> (synth-&gt;channel == NULL) {
    471. 

  471. <a name="l00457"></a>00457     FLUID_LOG(<a class="code" href="log_8h.html#a341232c15addd9c336131984840ed9ebc0ff48d192b3b0fc721946ccf095d25" title="Serious error occurred.">FLUID_ERR</a>, <span class="stringliteral">"Out of memory"</span>);
    472. 

  472. <a name="l00458"></a>00458     <span class="keywordflow">goto</span> error_recovery;
    473. 

  473. <a name="l00459"></a>00459   }
    474. 

  474. <a name="l00460"></a>00460   <span class="keywordflow">for</span> (i = 0; i &lt; synth-&gt;midi_channels; i++) {
    475. 

  475. <a name="l00461"></a>00461     synth-&gt;channel[i] = new_fluid_channel(synth, i);
    476. 

  476. <a name="l00462"></a>00462     <span class="keywordflow">if</span> (synth-&gt;channel[i] == NULL) {
    477. 

  477. <a name="l00463"></a>00463       <span class="keywordflow">goto</span> error_recovery;
    478. 

  478. <a name="l00464"></a>00464     }
    479. 

  479. <a name="l00465"></a>00465   }
    480. 

  480. <a name="l00466"></a>00466 
    481. 

  481. <a name="l00467"></a>00467   <span class="comment">/* allocate all synthesis processes */</span>
    482. 

  482. <a name="l00468"></a>00468   synth-&gt;nvoice = synth-&gt;polyphony;
    483. 

  483. <a name="l00469"></a>00469   synth-&gt;voice = FLUID_ARRAY(fluid_voice_t*, synth-&gt;nvoice);
    484. 

  484. <a name="l00470"></a>00470   <span class="keywordflow">if</span> (synth-&gt;voice == NULL) {
    485. 

  485. <a name="l00471"></a>00471     <span class="keywordflow">goto</span> error_recovery;
    486. 

  486. <a name="l00472"></a>00472   }
    487. 

  487. <a name="l00473"></a>00473   <span class="keywordflow">for</span> (i = 0; i &lt; synth-&gt;nvoice; i++) {
    488. 

  488. <a name="l00474"></a>00474     synth-&gt;voice[i] = new_fluid_voice(synth-&gt;sample_rate);
    489. 

  489. <a name="l00475"></a>00475     <span class="keywordflow">if</span> (synth-&gt;voice[i] == NULL) {
    490. 

  490. <a name="l00476"></a>00476       <span class="keywordflow">goto</span> error_recovery;
    491. 

  491. <a name="l00477"></a>00477     }
    492. 

  492. <a name="l00478"></a>00478   }
    493. 

  493. <a name="l00479"></a>00479 
    494. 

  494. <a name="l00480"></a>00480   <span class="comment">/* Allocate the sample buffers */</span>
    495. 

  495. <a name="l00481"></a>00481   synth-&gt;left_buf = NULL;
    496. 

  496. <a name="l00482"></a>00482   synth-&gt;right_buf = NULL;
    497. 

  497. <a name="l00483"></a>00483   synth-&gt;fx_left_buf = NULL;
    498. 

  498. <a name="l00484"></a>00484   synth-&gt;fx_right_buf = NULL;
    499. 

  499. <a name="l00485"></a>00485 
    500. 

  500. <a name="l00486"></a>00486   <span class="comment">/* Left and right audio buffers */</span>
    501. 

  501. <a name="l00487"></a>00487 
    502. 

  502. <a name="l00488"></a>00488   synth-&gt;left_buf = FLUID_ARRAY(fluid_real_t*, synth-&gt;nbuf);
    503. 

  503. <a name="l00489"></a>00489   synth-&gt;right_buf = FLUID_ARRAY(fluid_real_t*, synth-&gt;nbuf);
    504. 

  504. <a name="l00490"></a>00490 
    505. 

  505. <a name="l00491"></a>00491   <span class="keywordflow">if</span> ((synth-&gt;left_buf == NULL) || (synth-&gt;right_buf == NULL)) {
    506. 

  506. <a name="l00492"></a>00492     FLUID_LOG(<a class="code" href="log_8h.html#a341232c15addd9c336131984840ed9ebc0ff48d192b3b0fc721946ccf095d25" title="Serious error occurred.">FLUID_ERR</a>, <span class="stringliteral">"Out of memory"</span>);
    507. 

  507. <a name="l00493"></a>00493     <span class="keywordflow">goto</span> error_recovery;
    508. 

  508. <a name="l00494"></a>00494   }
    509. 

  509. <a name="l00495"></a>00495 
    510. 

  510. <a name="l00496"></a>00496   FLUID_MEMSET(synth-&gt;left_buf, 0, synth-&gt;nbuf * <span class="keyword">sizeof</span>(fluid_real_t*));
    511. 

  511. <a name="l00497"></a>00497   FLUID_MEMSET(synth-&gt;right_buf, 0, synth-&gt;nbuf * <span class="keyword">sizeof</span>(fluid_real_t*));
    512. 

  512. <a name="l00498"></a>00498 
    513. 

  513. <a name="l00499"></a>00499   <span class="keywordflow">for</span> (i = 0; i &lt; synth-&gt;nbuf; i++) {
    514. 

  514. <a name="l00500"></a>00500 
    515. 

  515. <a name="l00501"></a>00501     synth-&gt;left_buf[i] = FLUID_ARRAY(fluid_real_t, FLUID_BUFSIZE);
    516. 

  516. <a name="l00502"></a>00502     synth-&gt;right_buf[i] = FLUID_ARRAY(fluid_real_t, FLUID_BUFSIZE);
    517. 

  517. <a name="l00503"></a>00503 
    518. 

  518. <a name="l00504"></a>00504     <span class="keywordflow">if</span> ((synth-&gt;left_buf[i] == NULL) || (synth-&gt;right_buf[i] == NULL)) {
    519. 

  519. <a name="l00505"></a>00505       FLUID_LOG(<a class="code" href="log_8h.html#a341232c15addd9c336131984840ed9ebc0ff48d192b3b0fc721946ccf095d25" title="Serious error occurred.">FLUID_ERR</a>, <span class="stringli…
    520.

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