annotate decoders/timidity/instrum.c @ 576:8d62447b75f2

Added new Core Audio backend.
author Eric Wing <ewing . public |-at-| gmail . com>
date Sun, 10 Oct 2010 21:30:17 -0700
parents cbc2a4ffeeec
children
rev   line source
199
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Ryan C. Gordon <icculus@icculus.org>
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1 /*
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2
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3 TiMidity -- Experimental MIDI to WAVE converter
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4 Copyright (C) 1995 Tuukka Toivonen <toivonen@clinet.fi>
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5
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6 This program is free software; you can redistribute it and/or modify
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Ryan C. Gordon <icculus@icculus.org>
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7 it under the terms of the GNU General Public License as published by
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Ryan C. Gordon <icculus@icculus.org>
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8 the Free Software Foundation; either version 2 of the License, or
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Ryan C. Gordon <icculus@icculus.org>
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9 (at your option) any later version.
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10
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11 This program is distributed in the hope that it will be useful,
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12 but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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Ryan C. Gordon <icculus@icculus.org>
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14 GNU General Public License for more details.
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15
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16 You should have received a copy of the GNU General Public License
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Ryan C. Gordon <icculus@icculus.org>
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17 along with this program; if not, write to the Free Software
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Ryan C. Gordon <icculus@icculus.org>
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18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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19
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20 instrum.c
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21
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22 Code to load and unload GUS-compatible instrument patches.
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23
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24 */
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25
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26 #if HAVE_CONFIG_H
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27 # include <config.h>
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28 #endif
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29
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30 #include <stdio.h>
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31 #include <string.h>
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32 #include <stdlib.h>
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33
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34 #include "SDL_sound.h"
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35
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36 #define __SDL_SOUND_INTERNAL__
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37 #include "SDL_sound_internal.h"
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38
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39 #include "timidity.h"
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40 #include "options.h"
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41 #include "common.h"
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42 #include "instrum.h"
455
cbc2a4ffeeec * Added support for loading DLS format instruments:
hercules
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43 #include "instrum_dls.h"
199
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44 #include "resample.h"
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45 #include "tables.h"
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46
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47 static void free_instrument(Instrument *ip)
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48 {
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49 Sample *sp;
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50 int i;
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51 if (!ip) return;
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52 for (i=0; i<ip->samples; i++)
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53 {
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54 sp=&(ip->sample[i]);
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55 free(sp->data);
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56 }
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57 free(ip->sample);
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58 free(ip);
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59 }
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60
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61 static void free_bank(MidiSong *song, int dr, int b)
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62 {
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63 int i;
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64 ToneBank *bank=((dr) ? song->drumset[b] : song->tonebank[b]);
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65 for (i=0; i<128; i++)
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66 if (bank->instrument[i])
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67 {
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68 /* Not that this could ever happen, of course */
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69 if (bank->instrument[i] != MAGIC_LOAD_INSTRUMENT)
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70 free_instrument(bank->instrument[i]);
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71 bank->instrument[i]=0;
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72 }
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73 }
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74
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75 static Sint32 convert_envelope_rate(MidiSong *song, Uint8 rate)
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76 {
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77 Sint32 r;
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78
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79 r = 3 - ((rate >> 6) & 0x3);
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80 r *= 3;
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81 r = (Sint32) (rate & 0x3f) << r; /* 6.9 fixed point */
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82
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83 /* 15.15 fixed point. */
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84 r = ((r * 44100) / song->rate) * song->control_ratio;
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85
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86 #ifdef FAST_DECAY
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87 return r << 10;
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88 #else
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89 return r << 9;
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90 #endif
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91 }
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92
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93 static Sint32 convert_envelope_offset(Uint8 offset)
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94 {
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Ryan C. Gordon <icculus@icculus.org>
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95 /* This is not too good... Can anyone tell me what these values mean?
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96 Are they GUS-style "exponential" volumes? And what does that mean? */
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97
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98 /* 15.15 fixed point */
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99 return offset << (7+15);
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100 }
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101
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102 static Sint32 convert_tremolo_sweep(MidiSong *song, Uint8 sweep)
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103 {
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104 if (!sweep)
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105 return 0;
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106
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107 return
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108 ((song->control_ratio * SWEEP_TUNING) << SWEEP_SHIFT) /
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109 (song->rate * sweep);
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110 }
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111
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112 static Sint32 convert_vibrato_sweep(MidiSong *song, Uint8 sweep,
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113 Sint32 vib_control_ratio)
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114 {
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115 if (!sweep)
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116 return 0;
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117
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118 return
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119 (Sint32) (FSCALE((double) (vib_control_ratio) * SWEEP_TUNING, SWEEP_SHIFT)
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120 / (double)(song->rate * sweep));
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121
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122 /* this was overflowing with seashore.pat
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123
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124 ((vib_control_ratio * SWEEP_TUNING) << SWEEP_SHIFT) /
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125 (song->rate * sweep); */
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126 }
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127
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128 static Sint32 convert_tremolo_rate(MidiSong *song, Uint8 rate)
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129 {
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130 return
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131 ((SINE_CYCLE_LENGTH * song->control_ratio * rate) << RATE_SHIFT) /
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132 (TREMOLO_RATE_TUNING * song->rate);
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133 }
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134
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135 static Sint32 convert_vibrato_rate(MidiSong *song, Uint8 rate)
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136 {
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137 /* Return a suitable vibrato_control_ratio value */
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138 return
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139 (VIBRATO_RATE_TUNING * song->rate) /
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140 (rate * 2 * VIBRATO_SAMPLE_INCREMENTS);
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141 }
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142
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143 static void reverse_data(Sint16 *sp, Sint32 ls, Sint32 le)
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144 {
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145 Sint16 s, *ep=sp+le;
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146 sp+=ls;
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147 le-=ls;
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148 le/=2;
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149 while (le--)
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150 {
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151 s=*sp;
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152 *sp++=*ep;
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153 *ep--=s;
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154 }
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155 }
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156
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157 /*
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158 If panning or note_to_use != -1, it will be used for all samples,
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159 instead of the sample-specific values in the instrument file.
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160
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161 For note_to_use, any value <0 or >127 will be forced to 0.
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162
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163 For other parameters, 1 means yes, 0 means no, other values are
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164 undefined.
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165
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166 TODO: do reverse loops right */
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167 static Instrument *load_instrument(MidiSong *song, char *name, int percussion,
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168 int panning, int amp, int note_to_use,
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169 int strip_loop, int strip_envelope,
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170 int strip_tail)
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171 {
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172 Instrument *ip;
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173 Sample *sp;
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174 SDL_RWops *rw;
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175 char tmp[1024];
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
176 int i,j,noluck=0;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
177 static char *patch_ext[] = PATCH_EXT_LIST;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
178
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
179 if (!name) return 0;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
180
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
181 /* Open patch file */
455
cbc2a4ffeeec * Added support for loading DLS format instruments:
hercules
parents: 447
diff changeset
182 if ((rw=open_file(name)) == NULL)
199
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
183 {
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
184 noluck=1;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
185 /* Try with various extensions */
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
186 for (i=0; patch_ext[i]; i++)
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
187 {
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
188 if (strlen(name)+strlen(patch_ext[i])<1024)
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
189 {
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
190 strcpy(tmp, name);
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
191 strcat(tmp, patch_ext[i]);
455
cbc2a4ffeeec * Added support for loading DLS format instruments:
hercules
parents: 447
diff changeset
192 if ((rw=open_file(tmp)) != NULL)
199
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
193 {
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
194 noluck=0;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
195 break;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
196 }
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
197 }
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
198 }
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
199 }
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
200
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
201 if (noluck)
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
202 {
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
203 SNDDBG(("Instrument `%s' can't be found.\n", name));
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
204 return 0;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
205 }
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
206
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
207 SNDDBG(("Loading instrument %s\n", tmp));
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
208
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
209 /* Read some headers and do cursory sanity checks. There are loads
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
210 of magic offsets. This could be rewritten... */
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
211
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
212 if ((239 != SDL_RWread(rw, tmp, 1, 239)) ||
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
213 (memcmp(tmp, "GF1PATCH110\0ID#000002", 22) &&
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
214 memcmp(tmp, "GF1PATCH100\0ID#000002", 22))) /* don't know what the
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
215 differences are */
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
216 {
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
217 SNDDBG(("%s: not an instrument\n", name));
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
218 return 0;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
219 }
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
220
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
221 if (tmp[82] != 1 && tmp[82] != 0) /* instruments. To some patch makers,
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
222 0 means 1 */
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
223 {
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
224 SNDDBG(("Can't handle patches with %d instruments\n", tmp[82]));
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
225 return 0;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
226 }
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
227
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
228 if (tmp[151] != 1 && tmp[151] != 0) /* layers. What's a layer? */
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
229 {
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
230 SNDDBG(("Can't handle instruments with %d layers\n", tmp[151]));
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
231 return 0;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
232 }
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
233
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
234 ip=safe_malloc(sizeof(Instrument));
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
235 ip->samples = tmp[198];
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
236 ip->sample = safe_malloc(sizeof(Sample) * ip->samples);
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
237 for (i=0; i<ip->samples; i++)
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
238 {
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
239
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
240 Uint8 fractions;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
241 Sint32 tmplong;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
242 Uint16 tmpshort;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
243 Uint8 tmpchar;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
244
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
245 #define READ_CHAR(thing) \
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
246 if (1 != SDL_RWread(rw, &tmpchar, 1, 1)) goto fail; \
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
247 thing = tmpchar;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
248 #define READ_SHORT(thing) \
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
249 if (1 != SDL_RWread(rw, &tmpshort, 2, 1)) goto fail; \
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
250 thing = SDL_SwapLE16(tmpshort);
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
251 #define READ_LONG(thing) \
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
252 if (1 != SDL_RWread(rw, &tmplong, 4, 1)) goto fail; \
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
253 thing = SDL_SwapLE32(tmplong);
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
254
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
255 SDL_RWseek(rw, 7, SEEK_CUR); /* Skip the wave name */
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
256
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
257 if (1 != SDL_RWread(rw, &fractions, 1, 1))
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
258 {
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
259 fail:
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
260 SNDDBG(("Error reading sample %d\n", i));
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
261 for (j=0; j<i; j++)
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
262 free(ip->sample[j].data);
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
263 free(ip->sample);
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
264 free(ip);
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
265 return 0;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
266 }
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
267
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
268 sp=&(ip->sample[i]);
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
269
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
270 READ_LONG(sp->data_length);
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
271 READ_LONG(sp->loop_start);
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
272 READ_LONG(sp->loop_end);
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
273 READ_SHORT(sp->sample_rate);
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
274 READ_LONG(sp->low_freq);
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
275 READ_LONG(sp->high_freq);
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
276 READ_LONG(sp->root_freq);
455
cbc2a4ffeeec * Added support for loading DLS format instruments:
hercules
parents: 447
diff changeset
277 sp->low_vel = 0;
cbc2a4ffeeec * Added support for loading DLS format instruments:
hercules
parents: 447
diff changeset
278 sp->high_vel = 127;
199
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
279 SDL_RWseek(rw, 2, SEEK_CUR); /* Why have a "root frequency" and then
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
280 * "tuning"?? */
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
281
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
282 READ_CHAR(tmp[0]);
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
283
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
284 if (panning==-1)
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
285 sp->panning = (tmp[0] * 8 + 4) & 0x7f;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
286 else
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
287 sp->panning=(Uint8)(panning & 0x7F);
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
288
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
289 /* envelope, tremolo, and vibrato */
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
290 if (18 != SDL_RWread(rw, tmp, 1, 18)) goto fail;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
291
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
292 if (!tmp[13] || !tmp[14])
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
293 {
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
294 sp->tremolo_sweep_increment=
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
295 sp->tremolo_phase_increment=sp->tremolo_depth=0;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
296 SNDDBG((" * no tremolo\n"));
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
297 }
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
298 else
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
299 {
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
300 sp->tremolo_sweep_increment=convert_tremolo_sweep(song, tmp[12]);
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
301 sp->tremolo_phase_increment=convert_tremolo_rate(song, tmp[13]);
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
302 sp->tremolo_depth=tmp[14];
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
303 SNDDBG((" * tremolo: sweep %d, phase %d, depth %d\n",
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
304 sp->tremolo_sweep_increment, sp->tremolo_phase_increment,
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
305 sp->tremolo_depth));
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
306 }
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
307
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
308 if (!tmp[16] || !tmp[17])
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
309 {
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
310 sp->vibrato_sweep_increment=
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
311 sp->vibrato_control_ratio=sp->vibrato_depth=0;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
312 SNDDBG((" * no vibrato\n"));
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
313 }
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
314 else
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
315 {
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
316 sp->vibrato_control_ratio=convert_vibrato_rate(song, tmp[16]);
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
317 sp->vibrato_sweep_increment=
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
318 convert_vibrato_sweep(song, tmp[15], sp->vibrato_control_ratio);
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
319 sp->vibrato_depth=tmp[17];
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
320 SNDDBG((" * vibrato: sweep %d, ctl %d, depth %d\n",
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
321 sp->vibrato_sweep_increment, sp->vibrato_control_ratio,
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
322 sp->vibrato_depth));
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
323
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
324 }
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
325
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
326 READ_CHAR(sp->modes);
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
327
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
328 SDL_RWseek(rw, 40, SEEK_CUR); /* skip the useless scale frequency, scale
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
329 factor (what's it mean?), and reserved
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
330 space */
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
331
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
332 /* Mark this as a fixed-pitch instrument if such a deed is desired. */
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
333 if (note_to_use!=-1)
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
334 sp->note_to_use=(Uint8)(note_to_use);
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
335 else
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
336 sp->note_to_use=0;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
337
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
338 /* seashore.pat in the Midia patch set has no Sustain. I don't
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
339 understand why, and fixing it by adding the Sustain flag to
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
340 all looped patches probably breaks something else. We do it
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
341 anyway. */
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
342
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
343 if (sp->modes & MODES_LOOPING)
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
344 sp->modes |= MODES_SUSTAIN;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
345
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
346 /* Strip any loops and envelopes we're permitted to */
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
347 if ((strip_loop==1) &&
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
348 (sp->modes & (MODES_SUSTAIN | MODES_LOOPING |
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
349 MODES_PINGPONG | MODES_REVERSE)))
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
350 {
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
351 SNDDBG((" - Removing loop and/or sustain\n"));
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
352 sp->modes &=~(MODES_SUSTAIN | MODES_LOOPING |
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
353 MODES_PINGPONG | MODES_REVERSE);
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
354 }
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
355
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
356 if (strip_envelope==1)
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
357 {
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
358 if (sp->modes & MODES_ENVELOPE)
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
359 SNDDBG((" - Removing envelope\n"));
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
360 sp->modes &= ~MODES_ENVELOPE;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
361 }
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
362 else if (strip_envelope != 0)
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
363 {
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
364 /* Have to make a guess. */
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
365 if (!(sp->modes & (MODES_LOOPING | MODES_PINGPONG | MODES_REVERSE)))
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
366 {
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
367 /* No loop? Then what's there to sustain? No envelope needed
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
368 either... */
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
369 sp->modes &= ~(MODES_SUSTAIN|MODES_ENVELOPE);
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
370 SNDDBG((" - No loop, removing sustain and envelope\n"));
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
371 }
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
372 else if (!memcmp(tmp, "??????", 6) || tmp[11] >= 100)
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
373 {
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
374 /* Envelope rates all maxed out? Envelope end at a high "offset"?
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
375 That's a weird envelope. Take it out. */
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
376 sp->modes &= ~MODES_ENVELOPE;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
377 SNDDBG((" - Weirdness, removing envelope\n"));
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
378 }
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
379 else if (!(sp->modes & MODES_SUSTAIN))
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
380 {
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
381 /* No sustain? Then no envelope. I don't know if this is
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
382 justified, but patches without sustain usually don't need the
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
383 envelope either... at least the Gravis ones. They're mostly
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
384 drums. I think. */
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
385 sp->modes &= ~MODES_ENVELOPE;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
386 SNDDBG((" - No sustain, removing envelope\n"));
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
387 }
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
388 }
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
389
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
390 for (j=0; j<6; j++)
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
391 {
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
392 sp->envelope_rate[j]=
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
393 convert_envelope_rate(song, tmp[j]);
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
394 sp->envelope_offset[j]=
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
395 convert_envelope_offset(tmp[6+j]);
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
396 }
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
397
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
398 /* Then read the sample data */
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
399 sp->data = safe_malloc(sp->data_length);
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
400 if (1 != SDL_RWread(rw, sp->data, sp->data_length, 1))
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
401 goto fail;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
402
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
403 if (!(sp->modes & MODES_16BIT)) /* convert to 16-bit data */
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
404 {
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
405 Sint32 i=sp->data_length;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
406 Uint8 *cp=(Uint8 *)(sp->data);
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
407 Uint16 *tmp,*new;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
408 tmp=new=safe_malloc(sp->data_length*2);
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
409 while (i--)
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
410 *tmp++ = (Uint16)(*cp++) << 8;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
411 cp=(Uint8 *)(sp->data);
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
412 sp->data = (sample_t *)new;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
413 free(cp);
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
414 sp->data_length *= 2;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
415 sp->loop_start *= 2;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
416 sp->loop_end *= 2;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
417 }
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
418 #if SDL_BYTEORDER == SDL_BIG_ENDIAN
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
419 else
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
420 /* convert to machine byte order */
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
421 {
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
422 Sint32 i=sp->data_length/2;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
423 Sint16 *tmp=(Sint16 *)sp->data,s;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
424 while (i--)
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
425 {
447
c98a34c00069 Fixed MIDI decoding on bigendian systems.
Ryan C. Gordon <icculus@icculus.org>
parents: 199
diff changeset
426 s=SDL_SwapLE16(*tmp);
199
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
427 *tmp++=s;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
428 }
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
429 }
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
430 #endif
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
431
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
432 if (sp->modes & MODES_UNSIGNED) /* convert to signed data */
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
433 {
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
434 Sint32 i=sp->data_length/2;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
435 Sint16 *tmp=(Sint16 *)sp->data;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
436 while (i--)
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
437 *tmp++ ^= 0x8000;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
438 }
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
439
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
440 /* Reverse reverse loops and pass them off as normal loops */
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
441 if (sp->modes & MODES_REVERSE)
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
442 {
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
443 Sint32 t;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
444 /* The GUS apparently plays reverse loops by reversing the
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
445 whole sample. We do the same because the GUS does not SUCK. */
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
446
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
447 SNDDBG(("Reverse loop in %s\n", name));
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
448 reverse_data((Sint16 *)sp->data, 0, sp->data_length/2);
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
449
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
450 t=sp->loop_start;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
451 sp->loop_start=sp->data_length - sp->loop_end;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
452 sp->loop_end=sp->data_length - t;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
453
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
454 sp->modes &= ~MODES_REVERSE;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
455 sp->modes |= MODES_LOOPING; /* just in case */
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
456 }
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
457
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
458 #ifdef ADJUST_SAMPLE_VOLUMES
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
459 if (amp!=-1)
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
460 sp->volume=(float)((amp) / 100.0);
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
461 else
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
462 {
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
463 /* Try to determine a volume scaling factor for the sample.
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
464 This is a very crude adjustment, but things sound more
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
465 balanced with it. Still, this should be a runtime option. */
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
466 Sint32 i=sp->data_length/2;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
467 Sint16 maxamp=0,a;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
468 Sint16 *tmp=(Sint16 *)sp->data;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
469 while (i--)
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
470 {
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
471 a=*tmp++;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
472 if (a<0) a=-a;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
473 if (a>maxamp)
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
474 maxamp=a;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
475 }
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
476 sp->volume=(float)(32768.0 / maxamp);
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
477 SNDDBG((" * volume comp: %f\n", sp->volume));
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
478 }
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
479 #else
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
480 if (amp!=-1)
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
481 sp->volume=(double)(amp) / 100.0;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
482 else
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
483 sp->volume=1.0;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
484 #endif
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
485
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
486 sp->data_length /= 2; /* These are in bytes. Convert into samples. */
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
487 sp->loop_start /= 2;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
488 sp->loop_end /= 2;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
489
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
490 /* Then fractional samples */
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
491 sp->data_length <<= FRACTION_BITS;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
492 sp->loop_start <<= FRACTION_BITS;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
493 sp->loop_end <<= FRACTION_BITS;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
494
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
495 /* Adjust for fractional loop points. This is a guess. Does anyone
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
496 know what "fractions" really stands for? */
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
497 sp->loop_start |=
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
498 (fractions & 0x0F) << (FRACTION_BITS-4);
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
499 sp->loop_end |=
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
500 ((fractions>>4) & 0x0F) << (FRACTION_BITS-4);
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
501
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
502 /* If this instrument will always be played on the same note,
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
503 and it's not looped, we can resample it now. */
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
504 if (sp->note_to_use && !(sp->modes & MODES_LOOPING))
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
505 pre_resample(song, sp);
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
506
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
507 if (strip_tail==1)
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
508 {
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
509 /* Let's not really, just say we did. */
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
510 SNDDBG((" - Stripping tail\n"));
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
511 sp->data_length = sp->loop_end;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
512 }
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
513 }
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
514
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
515 SDL_RWclose(rw);
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
516 return ip;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
517 }
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
518
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
519 static int fill_bank(MidiSong *song, int dr, int b)
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
520 {
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
521 int i, errors=0;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
522 ToneBank *bank=((dr) ? song->drumset[b] : song->tonebank[b]);
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
523 if (!bank)
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
524 {
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
525 SNDDBG(("Huh. Tried to load instruments in non-existent %s %d\n",
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
526 (dr) ? "drumset" : "tone bank", b));
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
527 return 0;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
528 }
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
529 for (i=0; i<128; i++)
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
530 {
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
531 if (bank->instrument[i]==MAGIC_LOAD_INSTRUMENT)
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
532 {
455
cbc2a4ffeeec * Added support for loading DLS format instruments:
hercules
parents: 447
diff changeset
533 bank->instrument[i]=load_instrument_dls(song, dr, b, i);
cbc2a4ffeeec * Added support for loading DLS format instruments:
hercules
parents: 447
diff changeset
534 if (bank->instrument[i])
cbc2a4ffeeec * Added support for loading DLS format instruments:
hercules
parents: 447
diff changeset
535 {
cbc2a4ffeeec * Added support for loading DLS format instruments:
hercules
parents: 447
diff changeset
536 continue;
cbc2a4ffeeec * Added support for loading DLS format instruments:
hercules
parents: 447
diff changeset
537 }
199
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
538 if (!(bank->tone[i].name))
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
539 {
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
540 SNDDBG(("No instrument mapped to %s %d, program %d%s\n",
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
541 (dr)? "drum set" : "tone bank", b, i,
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
542 (b!=0) ? "" : " - this instrument will not be heard"));
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
543 if (b!=0)
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
544 {
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
545 /* Mark the corresponding instrument in the default
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
546 bank / drumset for loading (if it isn't already) */
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
547 if (!dr)
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
548 {
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
549 if (!(song->tonebank[0]->instrument[i]))
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
550 song->tonebank[0]->instrument[i] =
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
551 MAGIC_LOAD_INSTRUMENT;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
552 }
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
553 else
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
554 {
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
555 if (!(song->drumset[0]->instrument[i]))
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
556 song->drumset[0]->instrument[i] =
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
557 MAGIC_LOAD_INSTRUMENT;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
558 }
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
559 }
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
560 bank->instrument[i] = 0;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
561 errors++;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
562 }
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
563 else if (!(bank->instrument[i] =
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
564 load_instrument(song,
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
565 bank->tone[i].name,
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
566 (dr) ? 1 : 0,
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
567 bank->tone[i].pan,
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
568 bank->tone[i].amp,
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
569 (bank->tone[i].note!=-1) ?
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
570 bank->tone[i].note :
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
571 ((dr) ? i : -1),
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
572 (bank->tone[i].strip_loop!=-1) ?
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
573 bank->tone[i].strip_loop :
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
574 ((dr) ? 1 : -1),
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
575 (bank->tone[i].strip_envelope != -1) ?
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
576 bank->tone[i].strip_envelope :
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
577 ((dr) ? 1 : -1),
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
578 bank->tone[i].strip_tail )))
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
579 {
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
580 SNDDBG(("Couldn't load instrument %s (%s %d, program %d)\n",
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
581 bank->tone[i].name,
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
582 (dr)? "drum set" : "tone bank", b, i));
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
583 errors++;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
584 }
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
585 }
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
586 }
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
587 return errors;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
588 }
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
589
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
590 int load_missing_instruments(MidiSong *song)
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
591 {
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
592 int i=128,errors=0;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
593 while (i--)
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
594 {
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
595 if (song->tonebank[i])
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
596 errors+=fill_bank(song,0,i);
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
597 if (song->drumset[i])
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
598 errors+=fill_bank(song,1,i);
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
599 }
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
600 return errors;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
601 }
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
602
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
603 void free_instruments(MidiSong *song)
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
604 {
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
605 int i=128;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
606 while(i--)
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
607 {
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
608 if (song->tonebank[i])
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
609 free_bank(song, 0, i);
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
610 if (song->drumset[i])
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
611 free_bank(song, 1, i);
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
612 }
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
613 }
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
614
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
615 int set_default_instrument(MidiSong *song, char *name)
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
616 {
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
617 Instrument *ip;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
618 if (!(ip=load_instrument(song, name, 0, -1, -1, -1, 0, 0, 0)))
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
619 return -1;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
620 song->default_instrument = ip;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
621 song->default_program = SPECIAL_PROGRAM;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
622 return 0;
2d887640d300 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
623 }