1 | /* |
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2 | orxonox - the future of 3D-vertical-scrollers |
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3 | |
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4 | Copyright (C) 2004 orx |
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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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7 | it under the terms of the GNU General Public License as published by |
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8 | the Free Software Foundation; either version 2, or (at your option) |
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9 | any later version. |
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10 | |
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11 | ### File Specific: |
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12 | main-programmer: Benjamin Grauer |
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13 | co-programmer: ... |
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14 | |
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15 | Beware: |
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16 | The Ogg-Player is a __Threaded__ Stream, this means, that invoking play() |
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17 | creates a Thread, that loops through the Music-File. The Thread seems |
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18 | to be safe, but it is not guarantied. |
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19 | |
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20 | ------------------------------------------------------------------- |
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21 | A Simple Version of this can be found at http://www.devmaster.net |
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22 | Thanks a lot for the nice work, and the easy portability to our Project. |
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23 | */ |
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24 | #define DEBUG_SPECIAL_MODULE DEBUG_MODULE_SOUND |
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25 | |
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26 | #include <iostream> |
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27 | |
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28 | #include "ogg_player.h" |
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29 | |
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30 | #include "sound_engine.h" |
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31 | |
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32 | #include "debug.h" |
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33 | |
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34 | namespace OrxSound |
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35 | { |
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36 | /** |
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37 | * initializes an Ogg-player from a file |
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38 | * @param fileName the file to load |
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39 | */ |
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40 | OggPlayer::OggPlayer(const std::string& fileName) |
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41 | { |
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42 | this->setClassID(CL_SOUND_OGG_PLAYER, "OggPlayer"); |
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43 | |
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44 | this->state = OggPlayer::None; |
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45 | |
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46 | this->source = 0; |
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47 | this->buffers[0] = 0; |
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48 | this->buffers[1] = 0; |
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49 | this->musicThreadID = NULL; |
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50 | |
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51 | if (!fileName.empty()) |
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52 | { |
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53 | if (this->open(fileName)) |
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54 | this->setName(fileName); |
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55 | } |
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56 | |
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57 | } |
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58 | |
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59 | /** |
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60 | * @brief deletes the OggPlayer |
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61 | */ |
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62 | OggPlayer::~OggPlayer() |
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63 | { |
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64 | this->release(); |
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65 | } |
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66 | |
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67 | /////////////// |
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68 | // INTERFACE // |
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69 | /////////////// |
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70 | /** |
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71 | * @brief opens a file for playback |
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72 | * @param fileName the file to open |
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73 | */ |
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74 | bool OggPlayer::open(const std::string& fileName) |
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75 | { |
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76 | OrxThread::MutexLock musicLock(&this->musicMutex); |
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77 | // release old Ogg-File (if loaded) |
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78 | if (this->state & OggPlayer::FileOpened) |
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79 | this->release(); |
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80 | |
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81 | // allocating Buffers |
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82 | if (this->buffers[0] == 0) |
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83 | alGenBuffers(2, this->buffers); |
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84 | SoundEngine::checkError("Allocating Buffers", __LINE__); |
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85 | if (this->buffers[0] != 0 && this->buffers[1] != 0) |
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86 | state |= OggPlayer::BuffersAllocated; |
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87 | else |
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88 | { |
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89 | PRINTF(2)("Unable to allocate al-Buffers\n"); |
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90 | this->release(); |
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91 | return false; |
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92 | } |
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93 | // allocating source |
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94 | if (this->source == 0) |
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95 | SoundEngine::getInstance()->popALSource(this->source); |
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96 | if (this->source != 0) |
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97 | state |= OggPlayer::SourceAllocated; |
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98 | else |
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99 | { |
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100 | PRINTF(2)("No more Sources Availiable (maybe you should consider raising the source-count.)\n"); |
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101 | this->release(); |
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102 | return false; |
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103 | } |
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104 | |
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105 | // opening the FILE; |
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106 | int result; |
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107 | if(!(oggFile = fopen(fileName.c_str(), "rb"))) |
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108 | { |
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109 | PRINTF(2)("Could not open Ogg file."); |
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110 | this->release(); |
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111 | return false; |
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112 | } |
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113 | // reading the Stream. |
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114 | if((result = ov_open(oggFile, &oggStream, NULL, 0)) < 0) |
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115 | { |
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116 | PRINTF(2)("Could not open Ogg stream. %s", getVorbisError(result)); |
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117 | fclose(oggFile); |
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118 | this->release(); |
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119 | return false; |
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120 | } |
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121 | this->state |= OggPlayer::FileOpened; |
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122 | |
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123 | // acquiring the vorbis-properties. |
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124 | vorbisInfo = ov_info(&oggStream, -1); |
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125 | vorbisComment = ov_comment(&oggStream, -1); |
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126 | |
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127 | if(vorbisInfo->channels == 1) |
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128 | format = AL_FORMAT_MONO16; |
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129 | else |
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130 | format = AL_FORMAT_STEREO16; |
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131 | |
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132 | // setting the Source Properties. |
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133 | alSource3f(source, AL_POSITION, 0.0, 0.0, 0.0); |
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134 | alSource3f(source, AL_VELOCITY, 0.0, 0.0, 0.0); |
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135 | alSource3f(source, AL_DIRECTION, 0.0, 0.0, 0.0); |
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136 | alSourcef (source, AL_ROLLOFF_FACTOR, 0.0 ); |
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137 | alSourcei (source, AL_SOURCE_RELATIVE, AL_TRUE ); |
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138 | alSourcef (source, AL_GAIN, SoundEngine::getInstance()->getMusicVolume()); |
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139 | SoundEngine::checkError("OggPlayer::open()::SetSourceProperties", __LINE__); |
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140 | |
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141 | // Set to State Stopped |
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142 | this->state |= OggPlayer::Stopped; |
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143 | return true; |
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144 | } |
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145 | |
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146 | |
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147 | /** |
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148 | * @brief start Playing Music. |
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149 | * @returns true on success false otherwise. |
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150 | */ |
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151 | bool OggPlayer::play() |
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152 | { |
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153 | if (!(this->state & OggPlayer::FileOpened)) |
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154 | return false; |
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155 | |
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156 | this->state &= ~(OggPlayer::Stopped | OggPlayer::Paused); |
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157 | |
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158 | if (!this->playback()) |
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159 | return false; |
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160 | |
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161 | if (this->musicThreadID == NULL) |
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162 | return ((this->musicThreadID = SDL_CreateThread(OggPlayer::musicThread, (void*)this)) != NULL); |
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163 | return true; |
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164 | } |
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165 | |
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166 | /** |
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167 | * @brief stop the OggPlayer from Playing. |
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168 | */ |
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169 | void OggPlayer::stop() |
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170 | { |
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171 | this->state &= ~(OggPlayer::Playing | OggPlayer::Paused); |
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172 | this->state |= OggPlayer::Stopped; |
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173 | |
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174 | this->suspend(); |
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175 | this->rewind(); |
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176 | } |
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177 | |
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178 | /** |
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179 | * @brief Pause the Playing. |
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180 | */ |
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181 | void OggPlayer::pause() |
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182 | { |
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183 | this->state &= ~OggPlayer::Playing; |
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184 | |
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185 | if (!(this->state & OggPlayer::Stopped)) |
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186 | this->state |= OggPlayer::Paused; |
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187 | |
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188 | this->suspend(); |
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189 | } |
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190 | |
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191 | /** |
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192 | * @brief rewind to the beginning, and play (if already playing) |
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193 | */ |
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194 | void OggPlayer::rewind() |
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195 | { |
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196 | this->jumpTo(0.0f); |
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197 | } |
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198 | |
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199 | /** |
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200 | * @brief jump to Second timeCode in the MusicFile |
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201 | * @param timeCode where to jump to. |
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202 | */ |
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203 | void OggPlayer::jumpTo(float timeCode) |
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204 | { |
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205 | |
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206 | if (this->state & OggPlayer::FileOpened) |
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207 | { |
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208 | OrxThread::MutexLock musicLock(&this->musicMutex); |
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209 | ov_time_seek(&this->oggStream, timeCode); |
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210 | } |
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211 | } |
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212 | |
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213 | /** |
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214 | * @returns the Length of the Music in Seconds |
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215 | */ |
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216 | float OggPlayer::length() |
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217 | { |
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218 | if (this->state & OggPlayer::FileOpened) |
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219 | return ov_time_total(&this->oggStream, -1); |
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220 | else |
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221 | return 0.0f; |
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222 | } |
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223 | |
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224 | |
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225 | /** |
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226 | * @returns true if the file is playing |
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227 | */ |
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228 | bool OggPlayer::isPlaying() |
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229 | { |
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230 | if (!(this->state & OggPlayer::FileOpened)) |
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231 | return false; |
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232 | ALenum state; |
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233 | |
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234 | alGetSourcei(this->source, AL_SOURCE_STATE, &state); |
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235 | |
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236 | return (state == AL_PLAYING); |
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237 | } |
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238 | |
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239 | |
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240 | |
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241 | //////////////////////// |
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242 | // INTERNAL FUNCTIONS // |
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243 | //////////////////////// |
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244 | /** |
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245 | * @brief creates a Thread for Playing back the music even if the rest of the Engine is slow |
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246 | * @param oggPlayer the OggPlayer to play back |
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247 | * @returns -1 on error. |
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248 | */ |
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249 | int OggPlayer::musicThread(void* oggPlayer) |
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250 | { |
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251 | if (oggPlayer == NULL) |
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252 | return -1; |
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253 | OggPlayer* ogg = (OggPlayer*)oggPlayer; |
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254 | |
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255 | PRINTF(4)("STARTIG AUDIO THREAD\n"); |
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256 | while (ogg->state & OggPlayer::Playing) |
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257 | { |
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258 | { |
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259 | OrxThread::MutexLock musicLock(&ogg->musicMutex); |
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260 | ogg->update(); |
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261 | } |
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262 | SDL_Delay(10); |
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263 | } |
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264 | PRINTF(4)("End the AudioThread\n"); |
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265 | } |
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266 | |
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267 | |
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268 | /** |
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269 | * @brief plays back the sound |
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270 | * @return true if running, false otherwise |
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271 | */ |
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272 | bool OggPlayer::playback() |
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273 | { |
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274 | if (!(this->state & OggPlayer::FileOpened)) |
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275 | return false; |
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276 | |
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277 | if(this->state & OggPlayer::Playing) |
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278 | return true; |
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279 | this->state |= OggPlayer::Playing; |
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280 | |
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281 | OrxThread::MutexLock musicLock(&this->musicMutex); |
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282 | if(!this->stream(this->buffers[0]) || !this->stream(this->buffers[1])) |
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283 | { |
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284 | this->state &= ~OggPlayer::Playing; |
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285 | return false; |
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286 | } |
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287 | |
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288 | alSourceQueueBuffers(this->source, 2, this->buffers); |
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289 | if (DEBUG_LEVEL >= 3) |
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290 | SoundEngine::checkError("OggPlayer::playback()::alSourceQueueBuffers", __LINE__); |
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291 | |
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292 | alSourcePlay(this->source); |
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293 | if (DEBUG_LEVEL >= 3) |
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294 | SoundEngine::checkError("OggPlayer::playback()::alSourcePlay", __LINE__); |
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295 | return true; |
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296 | } |
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297 | |
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298 | |
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299 | /** |
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300 | * @brief waits for the AudioThread to be finished. |
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301 | */ |
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302 | void OggPlayer::suspend() |
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303 | { |
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304 | if (this->musicThreadID != NULL) |
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305 | { |
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306 | assert (!(this->state & Playing)); |
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307 | SDL_WaitThread(this->musicThreadID, NULL); |
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308 | this->musicThreadID = NULL; |
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309 | } |
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310 | if (this->state & OggPlayer::SourceAllocated) |
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311 | { |
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312 | alSourceStop(this->source); |
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313 | alSourcei(this->source, AL_BUFFER, 0); |
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314 | } |
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315 | } |
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316 | |
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317 | /** |
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318 | * @brief updates the stream, this has to be done every few parts of a second, for sound-consistency |
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319 | * @returns true, if the Sound is playing flawlessly |
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320 | */ |
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321 | bool OggPlayer::update() |
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322 | { |
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323 | int processed = 0; |
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324 | bool active = true; |
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325 | |
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326 | alGetSourcei(source, AL_BUFFERS_PROCESSED, &processed); |
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327 | |
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328 | if (DEBUG_LEVEL >= 3) |
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329 | SoundEngine::checkError("OggPlayer::update()::alGetSourceI", __LINE__); |
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330 | |
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331 | while(processed--) |
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332 | { |
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333 | ALuint buffer; |
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334 | |
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335 | alSourceUnqueueBuffers(source, 1, &buffer); |
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336 | if (DEBUG_LEVEL >= 3) |
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337 | SoundEngine::checkError("OggPlayer::update()::unqueue", __LINE__); |
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338 | |
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339 | active = stream(buffer); |
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340 | |
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341 | alSourceQueueBuffers(source, 1, &buffer); |
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342 | if (DEBUG_LEVEL >= 3) |
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343 | SoundEngine::checkError("OggPlayer::update()::queue", __LINE__); |
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344 | } |
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345 | |
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346 | int play; |
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347 | alGetSourcei(source, AL_SOURCE_STATE, &play); |
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348 | |
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349 | if (play != AL_PLAYING) |
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350 | { |
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351 | alSourcePlay(source); |
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352 | PRINTF(2)("Filling Audio Gap\n"); |
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353 | } |
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354 | |
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355 | |
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356 | return active; |
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357 | } |
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358 | |
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359 | /** |
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360 | * @brief gets a new Stream from buffer |
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361 | * @param buffer the buffer to get the stream from |
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362 | * @return true, if everything worked as planed |
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363 | */ |
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364 | bool OggPlayer::stream(ALuint buffer) |
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365 | { |
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366 | if (unlikely(!(this->state & Playing))) |
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367 | return false; |
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368 | char pcm[OGG_PLAYER_BUFFER_SIZE]; |
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369 | int size = 0; |
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370 | int section; |
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371 | int result; |
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372 | |
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373 | while(size < OGG_PLAYER_BUFFER_SIZE) |
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374 | { |
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375 | result = ov_read(&this->oggStream, pcm + size, OGG_PLAYER_BUFFER_SIZE - size, 0, 2, 1, §ion); |
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376 | |
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377 | if(result > 0) |
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378 | size += result; |
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379 | else if(result < 0) |
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380 | throw getVorbisError(result); |
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381 | else /* eof */ |
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382 | ov_time_seek(&this->oggStream, 0.0); |
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383 | } |
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384 | |
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385 | if(size == 0) |
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386 | return false; |
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387 | |
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388 | alBufferData(buffer, format, pcm, size, vorbisInfo->rate); |
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389 | if (DEBUG_LEVEL >= 3) |
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390 | SoundEngine::checkError("OggPlayer::stream()::BUFFER", __LINE__); |
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391 | |
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392 | return true; |
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393 | } |
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394 | |
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395 | |
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396 | /** |
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397 | * @brief releases a stream |
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398 | */ |
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399 | void OggPlayer::release() |
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400 | { |
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401 | if (this->state & OggPlayer::SourceAllocated) |
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402 | { |
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403 | assert(alIsSource(this->source)); |
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404 | if (this->state & OggPlayer::Playing); |
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405 | { |
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406 | // Kill the Music Thread. |
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407 | this->state &= ~OggPlayer::Playing; |
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408 | this->suspend(); |
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409 | |
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410 | SoundEngine::checkError("OggPlayer::release()::alSourceStop", __LINE__); |
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411 | } |
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412 | empty(); |
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413 | alSourcei(this->source, AL_BUFFER, 0); |
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414 | SoundEngine::getInstance()->pushALSource(this->source); |
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415 | this->source = 0; |
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416 | this->state &= ~SourceAllocated; |
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417 | } |
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418 | if (this->state & OggPlayer::BuffersAllocated) |
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419 | { |
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420 | assert (this->buffers[0] != 0 && this->buffers[1] != 0); |
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421 | alDeleteBuffers(2, buffers); |
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422 | SoundEngine::checkError("OggPlayer::release()::alDeleteBuffers", __LINE__); |
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423 | this->buffers[0] = 0; |
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424 | this->buffers[1] = 0; |
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425 | this->state &= ~OggPlayer::BuffersAllocated; |
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426 | } |
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427 | |
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428 | if (this->state & OggPlayer::FileOpened) |
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429 | { |
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430 | ov_clear(&oggStream); |
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431 | this->state &= ~OggPlayer::FileOpened; |
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432 | } |
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433 | |
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434 | } |
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435 | |
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436 | |
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437 | /** |
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438 | * @brief empties the buffers |
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439 | */ |
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440 | void OggPlayer::empty() |
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441 | { |
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442 | int queued; |
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443 | |
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444 | alGetSourcei(source, AL_BUFFERS_QUEUED, &queued); |
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445 | |
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446 | while(queued--) |
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447 | { |
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448 | ALuint buffer; |
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449 | |
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450 | alSourceUnqueueBuffers(source, 1, &buffer); |
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451 | SoundEngine::checkError("OggPlayer::empty()::unqueue Buffers", __LINE__); |
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452 | } |
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453 | } |
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454 | |
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455 | |
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456 | ///////////////////// |
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457 | // DEBUG_LEVEL FUNCTIONS // |
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458 | ///////////////////// |
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459 | /** |
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460 | * displays some info about the ogg-file |
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461 | */ |
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462 | void OggPlayer::debug() const |
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463 | { |
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464 | std::cout |
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465 | << "version " << vorbisInfo->version << "\n" |
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466 | << "channels " << vorbisInfo->channels << "\n" |
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467 | << "rate (hz) " << vorbisInfo->rate << "\n" |
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468 | << "bitrate upper " << vorbisInfo->bitrate_upper << "\n" |
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469 | << "bitrate nominal " << vorbisInfo->bitrate_nominal << "\n" |
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470 | << "bitrate lower " << vorbisInfo->bitrate_lower << "\n" |
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471 | << "bitrate window " << vorbisInfo->bitrate_window << "\n" |
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472 | << "\n" |
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473 | << "vendor " << vorbisComment->vendor << "\n"; |
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474 | |
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475 | for(int i = 0; i < vorbisComment->comments; i++) |
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476 | std::cout << " " << vorbisComment->user_comments[i] << "\n"; |
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477 | |
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478 | std::cout << std::endl; |
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479 | } |
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480 | |
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481 | |
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482 | void OggPlayer::printState() const |
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483 | { |
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484 | PRINTF(0)("OggPlayer is in the following States: "); |
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485 | if (this->state & OggPlayer::FileOpened) |
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486 | PRINT(0)("FileOpened "); |
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487 | if (this->state & OggPlayer::SourceAllocated) |
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488 | PRINT(0)("SourceAllocated "); |
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489 | if (this->state & OggPlayer::BuffersAllocated) |
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490 | PRINT(0)("BuffersAllocated "); |
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491 | if (this->state & OggPlayer::Stopped) |
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492 | PRINT(0)("Stopped "); |
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493 | if (this->state & OggPlayer::Playing) |
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494 | PRINT(0)("Playing "); |
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495 | if (this->state & OggPlayer::Paused) |
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496 | PRINT(0)("Paused "); |
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497 | if (this->state & OggPlayer::Error) |
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498 | PRINT(0)("Error "); |
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499 | PRINT(0)("\n"); |
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500 | } |
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501 | |
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502 | /** |
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503 | * returns errors |
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504 | * @param code the error-code |
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505 | * @return the error as a String |
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506 | */ |
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507 | const char* OggPlayer::getVorbisError(int code) |
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508 | { |
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509 | switch(code) |
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510 | { |
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511 | case OV_EREAD: |
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512 | return ("Read from media."); |
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513 | case OV_ENOTVORBIS: |
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514 | return ("Not Vorbis data."); |
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515 | case OV_EVERSION: |
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516 | return ("Vorbis version mismatch."); |
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517 | case OV_EBADHEADER: |
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518 | return ("Invalid Vorbis header."); |
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519 | case OV_EFAULT: |
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520 | return ("Internal logic fault (bug or heap/stack corruption."); |
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521 | default: |
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522 | return ("Unknown Ogg error."); |
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523 | } |
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524 | } |
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525 | |
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526 | } |
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