[4750] | 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 | |
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| 16 | ------------------------------------------------------------------- |
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| 17 | The source of this file comes stright from http://www.devmaster.net |
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| 18 | Thanks a lot for the nice work, and the easy portability to our Project. |
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| 19 | */ |
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| 20 | |
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| 21 | #include "ogg_player.h" |
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| 22 | |
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[4985] | 23 | #include "sound_engine.h" |
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| 24 | |
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[4750] | 25 | #include "debug.h" |
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| 26 | |
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[4961] | 27 | |
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| 28 | /** |
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| 29 | * initializes an Ogg-player from a file |
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| 30 | * @param fileName the file to load |
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| 31 | */ |
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| 32 | OggPlayer::OggPlayer(const char* fileName) |
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[4750] | 33 | { |
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[4961] | 34 | this->setClassID(CL_SOUND_OGG_PLAYER, "OggPlayer"); |
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| 35 | if (fileName != NULL) |
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| 36 | { |
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| 37 | this->open(fileName); |
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| 38 | this->setName(fileName); |
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| 39 | } |
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| 40 | } |
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| 41 | |
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| 42 | /** |
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| 43 | * opens a file for playback |
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| 44 | * @param fileName the file to open |
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| 45 | */ |
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| 46 | void OggPlayer::open(const char* fileName) |
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| 47 | { |
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[4750] | 48 | int result; |
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| 49 | |
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[4961] | 50 | if(!(oggFile = fopen(fileName, "rb"))) |
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[4750] | 51 | PRINTF(2)("Could not open Ogg file."); |
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| 52 | |
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| 53 | if((result = ov_open(oggFile, &oggStream, NULL, 0)) < 0) |
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| 54 | { |
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| 55 | fclose(oggFile); |
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| 56 | |
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| 57 | PRINTF(2)("Could not open Ogg stream. %s", errorString(result)); |
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| 58 | } |
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| 59 | |
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| 60 | vorbisInfo = ov_info(&oggStream, -1); |
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| 61 | vorbisComment = ov_comment(&oggStream, -1); |
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| 62 | |
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| 63 | if(vorbisInfo->channels == 1) |
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| 64 | format = AL_FORMAT_MONO16; |
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| 65 | else |
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| 66 | format = AL_FORMAT_STEREO16; |
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| 67 | |
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| 68 | |
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| 69 | alGenBuffers(2, buffers); |
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| 70 | check(); |
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| 71 | alGenSources(1, &source); |
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| 72 | check(); |
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| 73 | |
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| 74 | alSource3f(source, AL_POSITION, 0.0, 0.0, 0.0); |
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| 75 | alSource3f(source, AL_VELOCITY, 0.0, 0.0, 0.0); |
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| 76 | alSource3f(source, AL_DIRECTION, 0.0, 0.0, 0.0); |
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| 77 | alSourcef (source, AL_ROLLOFF_FACTOR, 0.0 ); |
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| 78 | alSourcei (source, AL_SOURCE_RELATIVE, AL_TRUE ); |
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[4985] | 79 | alSourcef (source, AL_GAIN, SoundEngine::getInstance()->getMusicVolume()); |
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[4750] | 80 | } |
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| 81 | |
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[4961] | 82 | /** |
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| 83 | * releases a stream |
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| 84 | */ |
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| 85 | void OggPlayer::release() |
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[4750] | 86 | { |
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| 87 | alSourceStop(source); |
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| 88 | empty(); |
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| 89 | alDeleteSources(1, &source); |
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| 90 | check(); |
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| 91 | alDeleteBuffers(1, buffers); |
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| 92 | check(); |
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| 93 | |
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| 94 | ov_clear(&oggStream); |
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| 95 | } |
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| 96 | |
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[4961] | 97 | /** |
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| 98 | * displays some info about the ogg-file |
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| 99 | */ |
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| 100 | void OggPlayer::display() |
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[4750] | 101 | { |
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| 102 | cout |
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| 103 | << "version " << vorbisInfo->version << "\n" |
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| 104 | << "channels " << vorbisInfo->channels << "\n" |
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| 105 | << "rate (hz) " << vorbisInfo->rate << "\n" |
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| 106 | << "bitrate upper " << vorbisInfo->bitrate_upper << "\n" |
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| 107 | << "bitrate nominal " << vorbisInfo->bitrate_nominal << "\n" |
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| 108 | << "bitrate lower " << vorbisInfo->bitrate_lower << "\n" |
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| 109 | << "bitrate window " << vorbisInfo->bitrate_window << "\n" |
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| 110 | << "\n" |
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| 111 | << "vendor " << vorbisComment->vendor << "\n"; |
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| 112 | |
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| 113 | for(int i = 0; i < vorbisComment->comments; i++) |
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| 114 | cout << " " << vorbisComment->user_comments[i] << "\n"; |
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| 115 | |
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| 116 | cout << endl; |
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| 117 | } |
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| 118 | |
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| 119 | |
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[4961] | 120 | /** |
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| 121 | * plays back the sound |
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| 122 | * @return true if running, false otherwise |
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| 123 | */ |
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| 124 | bool OggPlayer::playback() |
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[4750] | 125 | { |
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| 126 | if(playing()) |
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| 127 | return true; |
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| 128 | |
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| 129 | if(!stream(buffers[0])) |
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| 130 | return false; |
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| 131 | |
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| 132 | if(!stream(buffers[1])) |
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| 133 | return false; |
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| 134 | |
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| 135 | alSourceQueueBuffers(source, 2, buffers); |
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| 136 | alSourcePlay(source); |
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| 137 | |
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| 138 | return true; |
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| 139 | } |
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| 140 | |
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[4961] | 141 | /** |
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| 142 | * |
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| 143 | * @returns true if the file is playing |
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| 144 | */ |
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| 145 | bool OggPlayer::playing() |
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[4750] | 146 | { |
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| 147 | ALenum state; |
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| 148 | |
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| 149 | alGetSourcei(source, AL_SOURCE_STATE, &state); |
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| 150 | |
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| 151 | return (state == AL_PLAYING); |
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| 152 | } |
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| 153 | |
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[4961] | 154 | /** |
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| 155 | * updates the stream, this has to be done every few parts of a second, for sound-consistency |
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| 156 | * @returns true, if the Sound is playing flawlessly |
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| 157 | */ |
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| 158 | bool OggPlayer::update() |
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[4750] | 159 | { |
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| 160 | int processed; |
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| 161 | bool active = true; |
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| 162 | |
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| 163 | alGetSourcei(source, AL_BUFFERS_PROCESSED, &processed); |
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| 164 | |
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| 165 | while(processed--) |
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| 166 | { |
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| 167 | ALuint buffer; |
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| 168 | |
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| 169 | alSourceUnqueueBuffers(source, 1, &buffer); |
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| 170 | check(); |
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| 171 | |
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| 172 | active = stream(buffer); |
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| 173 | |
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| 174 | alSourceQueueBuffers(source, 1, &buffer); |
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| 175 | check(); |
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| 176 | } |
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| 177 | |
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| 178 | return active; |
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| 179 | } |
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| 180 | |
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[4961] | 181 | /** |
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| 182 | * gets a new Stream from buffer |
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| 183 | * @param buffer the buffer to get the stream from |
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| 184 | * @return true, if everything worked as planed |
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| 185 | */ |
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| 186 | bool OggPlayer::stream(ALuint buffer) |
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[4750] | 187 | { |
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| 188 | char pcm[BUFFER_SIZE]; |
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| 189 | int size = 0; |
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| 190 | int section; |
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| 191 | int result; |
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| 192 | |
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| 193 | while(size < BUFFER_SIZE) |
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| 194 | { |
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| 195 | result = ov_read(&oggStream, pcm + size, BUFFER_SIZE - size, 0, 2, 1, §ion); |
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| 196 | |
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| 197 | if(result > 0) |
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| 198 | size += result; |
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| 199 | else |
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| 200 | if(result < 0) |
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| 201 | throw errorString(result); |
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| 202 | else |
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| 203 | break; |
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| 204 | } |
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| 205 | |
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| 206 | if(size == 0) |
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| 207 | return false; |
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| 208 | |
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| 209 | alBufferData(buffer, format, pcm, size, vorbisInfo->rate); |
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| 210 | check(); |
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| 211 | |
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| 212 | return true; |
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| 213 | } |
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| 214 | |
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| 215 | |
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[4961] | 216 | /** |
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| 217 | * empties the buffers |
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| 218 | */ |
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| 219 | void OggPlayer::empty() |
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[4750] | 220 | { |
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| 221 | int queued; |
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| 222 | |
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| 223 | alGetSourcei(source, AL_BUFFERS_QUEUED, &queued); |
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| 224 | |
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| 225 | while(queued--) |
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| 226 | { |
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| 227 | ALuint buffer; |
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| 228 | |
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| 229 | alSourceUnqueueBuffers(source, 1, &buffer); |
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| 230 | check(); |
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| 231 | } |
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| 232 | } |
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| 233 | |
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[4961] | 234 | /** |
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| 235 | * checks for errors |
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| 236 | */ |
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| 237 | void OggPlayer::check() |
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[4750] | 238 | { |
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| 239 | int error = alGetError(); |
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| 240 | |
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| 241 | if(error != AL_NO_ERROR) |
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| 242 | PRINTF(2)("OpenAL error was raised."); |
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| 243 | } |
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| 244 | |
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[4961] | 245 | /** |
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| 246 | * returns errors |
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| 247 | * @param code the error-code |
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| 248 | * @return the error as a String |
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| 249 | */ |
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| 250 | const char* OggPlayer::errorString(int code) |
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[4750] | 251 | { |
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| 252 | switch(code) |
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| 253 | { |
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| 254 | case OV_EREAD: |
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| 255 | return ("Read from media."); |
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| 256 | case OV_ENOTVORBIS: |
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| 257 | return ("Not Vorbis data."); |
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| 258 | case OV_EVERSION: |
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| 259 | return ("Vorbis version mismatch."); |
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| 260 | case OV_EBADHEADER: |
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| 261 | return ("Invalid Vorbis header."); |
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| 262 | case OV_EFAULT: |
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| 263 | return ("Internal logic fault (bug or heap/stack corruption."); |
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| 264 | default: |
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| 265 | return ("Unknown Ogg error."); |
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| 266 | } |
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| 267 | } |
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