Mercurial > fife-parpg

annotate engine/core/audio/soundemitter.h @ 487:7f1c42b66aa4

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Moved the shooter demo Timer() class to helpers.py. Changed the formula that calculates the length of the audio clip to be correct. The shooter demo now demonstrates the use of the audio clip callbacks correctly. Fixed the fife_timer extension to actually work.
author prock@33b003aa-7bff-0310-803a-e67f0ece8222
date Mon, 03 May 2010 19:58:16 +0000
parents e584b0b8b4a2
children 58c0bbeeeb35
rev   line source
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1 /***************************************************************************
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2 * Copyright (C) 2005-2008 by the FIFE team *
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3 * http://www.fifengine.de *
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4 * This file is part of FIFE. *
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5 * *
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6 * FIFE is free software; you can redistribute it and/or *
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7 * modify it under the terms of the GNU Lesser General Public *
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8 * License as published by the Free Software Foundation; either *
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9 * version 2.1 of the License, or (at your option) any later version. *
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10 * *
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11 * This library 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 GNU *
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14 * Lesser 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 Lesser General Public *
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17 * License along with this library; if not, write to the *
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18 * Free Software Foundation, Inc., *
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19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *
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20 ***************************************************************************/
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22 #ifndef FIFE_SOUNDEMITTER_H_
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23 #define FIFE_SOUNDEMITTER_H_
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25 // Standard C++ library includes
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27 // Platform specific includes
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29 // 3rd party library includes
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30 #include <boost/function.hpp>
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31
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32 // FIFE includes
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33 // These includes are split up in two parts, separated by one empty line
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34 // First block: files included from the FIFE root src directory
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35 // Second block: files included from the same folder
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36 #include "vfs/raw/rawdata.h"
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37 #include "util/time/timeevent.h"
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38
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39 #include "soundclip.h"
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41 namespace FIFE {
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42
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43 class SoundManager;
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44 class SoundClipPool;
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45
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46 /** The class for playing audio files
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47 */
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48 class SoundEmitter : private TimeEvent {
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49 public:
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50 typedef boost::function0<void> type_callback;
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52 SoundEmitter(SoundManager* manager, SoundClipPool* pool, unsigned int uid);
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53 ~SoundEmitter();
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55 /** Returns the emitter-id
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56 */
378
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
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57 unsigned int getID() const{
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58 return m_emitterid;
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59 }
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61 /** Sets Positioning-Type
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62 * Default is false
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63 *
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64 * @param relative If set to true, the emitters position will be interpreted relative to the listener object
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65 *
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66 */
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67 void setPositioning(bool relative) {
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68 alSourcei(m_source, AL_SOURCE_RELATIVE, relative ? AL_TRUE : AL_FALSE);
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69 }
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70
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71 /** Sets the AL_ROLEOFF_FACTOR. Rolloff factor judges the strength of attenuation over distance.
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72 *
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73 * @param rolloff Rolloff factor. You'll need to do a lot of testing to find a value which suits your needs.
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74 */
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75 void setRolloff(float rolloff) {
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76 alSourcef (m_source, AL_ROLLOFF_FACTOR, rolloff);
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77 }
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78
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79 /** Sets the sound clip to be used by this emitter.
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80 * @param sound_id SoundClipPool id of the sound to be used.
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81 */
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82 void setSoundClip(unsigned int sound_id);
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83
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84 /** Sets the callback to use when the STREAM has finished being played.
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85 * NOTE: This only works with streaming audio.
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86 *
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87 * @param cb function callback
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88 */
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89 void setCallback(const type_callback& cb);
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90
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91 /** Reset the emitter, free all internal buffers
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92 *
0
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93 * @param defaultall If set to true, emitter position, velocity, gain and type will be set to the default values
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94 */
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95 void reset(bool defaultall = false);
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96
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97 /** Releases the emitter
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98 */
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99 void release();
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100
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101 /** Sets the playing mode
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102 */
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103 void setLooping(bool loop);
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104
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105 /** Plays the associated audio file.
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106 */
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107 void play();
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108
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109 /** Stops playing the audio file and rewinds to the beginning
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110 */
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111 void stop();
173
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112
0
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113 /** Pauses playing the audio file
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114 */
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115 void pause() {
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116 if (m_soundclip) {
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117 alSourcePause(m_source);
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118 }
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119 }
173
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120
0
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121 /** Sets the gain of the emitter
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122 *
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123 * @param gain The gain value. 0=silence ... 1.0=normal loudness.
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124 */
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125 void setGain(float gain) {
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126 alSourcef(m_source, AL_GAIN, gain);
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127 }
173
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128
0
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129 /** Returns the gain of the emitter
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130 *
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131 * @return The gain value. 0=silence ... 1.0=normal loudness.
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132 */
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133 float getGain() {
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134 float tmp;
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135 alGetSourcef(m_source, AL_GAIN, &tmp);
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136 return tmp;
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137 }
173
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138
0
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139 /** Tests if the audio data is stereo data or mono.
173
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140 *
0
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141 * @return Returns true if the audio data is stereo, false if mono.
173
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142 */
378
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
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143 bool isStereo() const{
0
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144 if (m_soundclip) {
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145 return m_soundclip->getDecoder()->isStereo();
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146 }
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147 return false;
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148 }
173
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149
0
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150 /** Returns the bit resolution
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151 */
378
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
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152 short getBitResolution() const {
0
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153 if (m_soundclip) {
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154 return m_soundclip->getDecoder()->getBitResolution();
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155 }
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156 return 0;
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157 }
173
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158
0
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159 /** Returns the sample rate
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160 */
378
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
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161 unsigned long getSampleRate() const{
0
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162 if (m_soundclip) {
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163 return m_soundclip->getDecoder()->getSampleRate();
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164 }
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165 return 0;
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166 }
173
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167
484
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168 /** Returns the length of the decoded length in bytes
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169 */
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170 unsigned long getDecodedLength() const{
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171 if (m_soundclip) {
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172 return m_soundclip->getDecoder()->getDecodedLength();
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173
e584b0b8b4a2 Added SoundEmitter::getDecodedLength and SoundEmitter::getDuration. The getDuration function will allow a timer to be registered to fire after the sound has been played. This is not a callback as requested but it does provide the functionality if required. I will be committing an example of it in the shooter demo shortly. [t:346]
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174 }
e584b0b8b4a2 Added SoundEmitter::getDecodedLength and SoundEmitter::getDuration. The getDuration function will allow a timer to be registered to fire after the sound has been played. This is not a callback as requested but it does provide the functionality if required. I will be committing an example of it in the shooter demo shortly. [t:346]
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175 return 0;
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176 }
e584b0b8b4a2 Added SoundEmitter::getDecodedLength and SoundEmitter::getDuration. The getDuration function will allow a timer to be registered to fire after the sound has been played. This is not a callback as requested but it does provide the functionality if required. I will be committing an example of it in the shooter demo shortly. [t:346]
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177
e584b0b8b4a2 Added SoundEmitter::getDecodedLength and SoundEmitter::getDuration. The getDuration function will allow a timer to be registered to fire after the sound has been played. This is not a callback as requested but it does provide the functionality if required. I will be committing an example of it in the shooter demo shortly. [t:346]
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178 /** Returns the duration of the sound clip in milliseconds
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179 */
e584b0b8b4a2 Added SoundEmitter::getDecodedLength and SoundEmitter::getDuration. The getDuration function will allow a timer to be registered to fire after the sound has been played. This is not a callback as requested but it does provide the functionality if required. I will be committing an example of it in the shooter demo shortly. [t:346]
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180 unsigned long getDuration() const{
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181 if (m_soundclip) {
487
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182 double samplerate = static_cast<double>(getSampleRate()) / 1000.0; //convert to milliseconds
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183 double bitres = static_cast<double>(getBitResolution());
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184 double size = static_cast<double>(getDecodedLength()) * 8.0; //convert to bits
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185 double stereo = (isStereo() ? 2.0 : 1.0);
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186 double time = ( size / (samplerate * bitres) ) / stereo;
484
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187
e584b0b8b4a2 Added SoundEmitter::getDecodedLength and SoundEmitter::getDuration. The getDuration function will allow a timer to be registered to fire after the sound has been played. This is not a callback as requested but it does provide the functionality if required. I will be committing an example of it in the shooter demo shortly. [t:346]
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188 return static_cast<unsigned long>(time);
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189 }
e584b0b8b4a2 Added SoundEmitter::getDecodedLength and SoundEmitter::getDuration. The getDuration function will allow a timer to be registered to fire after the sound has been played. This is not a callback as requested but it does provide the functionality if required. I will be committing an example of it in the shooter demo shortly. [t:346]
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190 return 0;
e584b0b8b4a2 Added SoundEmitter::getDecodedLength and SoundEmitter::getDuration. The getDuration function will allow a timer to be registered to fire after the sound has been played. This is not a callback as requested but it does provide the functionality if required. I will be committing an example of it in the shooter demo shortly. [t:346]
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191 }
e584b0b8b4a2 Added SoundEmitter::getDecodedLength and SoundEmitter::getDuration. The getDuration function will allow a timer to be registered to fire after the sound has been played. This is not a callback as requested but it does provide the functionality if required. I will be committing an example of it in the shooter demo shortly. [t:346]
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192
0
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193 /** Sets the cursor position in the audio file
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194 */
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195 void setCursor(SoundPositionType type, float value);
173
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196
0
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197 /** Returns the cursor position in the audio file
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198 */
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199 float getCursor(SoundPositionType type);
173
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200
0
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201 /** Sets the position of the SoundEmitter in the virtual audio space.
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202 */
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203 void setPosition(float x, float y, float z) {
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204 alSource3f(m_source, AL_POSITION, x, y, z);
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205 }
173
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206
0
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207 /** Sets the velocity of the SoundEmitter in the virtual audio space.
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208 */
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209 void setVelocity(float x, float y, float z) {
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210 alSource3f(m_source, AL_VELOCITY, x, y, z);
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211 }
173
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212
0
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213 private:
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214 /** Implementation of the pure virtual function from TimeEvent to update streaming
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215 */
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216 virtual void updateEvent(unsigned long time);
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217
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218 /** Internal function to attach a soundclip to the source
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219 */
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220 void attachSoundClip();
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221
360
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222 SoundManager* m_manager;
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223 SoundClipPool* m_pool;
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224 ALuint m_source; // The openAL-source
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225 SoundClip* m_soundclip; // the attached soundclip
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226 unsigned int m_soundclipid;// id of the attached soundclip
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227 unsigned int m_streamid; // the id of the stream
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228 unsigned int m_emitterid; // the emitter-id
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229 bool m_loop; // loop?
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230 type_callback m_callback;
0
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231 };
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232 }
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233
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234 #endif