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1 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
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2
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3 /*
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4 Sonic Visualiser
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5 An audio file viewer and annotation editor.
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6 Centre for Digital Music, Queen Mary, University of London.
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7 This file copyright 2006 Chris Cannam.
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8
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9 This program is free software; you can redistribute it and/or
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10 modify it under the terms of the GNU General Public License as
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11 published by the Free Software Foundation; either version 2 of the
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12 License, or (at your option) any later version. See the file
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13 COPYING included with this distribution for more information.
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14 */
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15
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16 #ifdef HAVE_OGGZ
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17 #ifdef HAVE_FISHSOUND
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18
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19 #include "OggVorbisFileReader.h"
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20
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21 #include "base/ProgressReporter.h"
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22 #include "base/Profiler.h"
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23 #include "system/System.h"
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24
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25 #include <sys/types.h>
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26 #include <sys/stat.h>
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27 #include <fcntl.h>
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28 #include <cmath>
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29
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30 #include <QFileInfo>
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31
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32 //static int instances = 0;
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33
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34 OggVorbisFileReader::OggVorbisFileReader(FileSource source,
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35 DecodeMode decodeMode,
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36 CacheMode mode,
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37 sv_samplerate_t targetRate,
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38 bool normalised,
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39 ProgressReporter *reporter) :
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40 CodedAudioFileReader(mode, targetRate, normalised),
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41 m_source(source),
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42 m_path(source.getLocalFilename()),
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43 m_reporter(reporter),
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44 m_fileSize(0),
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45 m_bytesRead(0),
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46 m_commentsRead(false),
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47 m_cancelled(false),
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48 m_completion(0),
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49 m_decodeThread(0)
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50 {
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51 SVDEBUG << "OggVorbisFileReader: local path: \"" << m_path
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52 << "\", decode mode: " << decodeMode << " ("
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53 << (decodeMode == DecodeAtOnce ? "DecodeAtOnce" : "DecodeThreaded")
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54 << ")" << endl;
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55
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56 m_channelCount = 0;
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57 m_fileRate = 0;
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58
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59 // SVDEBUG << "OggVorbisFileReader::OggVorbisFileReader(" << m_path << "): now have " << (++instances) << " instances" << endl;
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60
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61 Profiler profiler("OggVorbisFileReader::OggVorbisFileReader");
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62
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63 QFileInfo info(m_path);
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64 m_fileSize = info.size();
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65
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66 if (!(m_oggz = oggz_open(m_path.toLocal8Bit().data(), OGGZ_READ))) {
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67 m_error = QString("File %1 is not an OGG file.").arg(m_path);
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68 return;
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69 }
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70
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71 FishSoundInfo fsinfo;
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72 m_fishSound = fish_sound_new(FISH_SOUND_DECODE, &fsinfo);
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73
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74 fish_sound_set_decoded_callback(m_fishSound, acceptFrames, this);
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75 oggz_set_read_callback(m_oggz, -1, (OggzReadPacket)readPacket, this);
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76
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77 if (decodeMode == DecodeAtOnce) {
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78
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79 if (m_reporter) {
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80 connect(m_reporter, SIGNAL(cancelled()), this, SLOT(cancelled()));
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81 m_reporter->setMessage
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82 (tr("Decoding %1...").arg(QFileInfo(m_path).fileName()));
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83 }
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84
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85 while (oggz_read(m_oggz, 1024) > 0);
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86
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87 fish_sound_delete(m_fishSound);
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88 m_fishSound = 0;
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89 oggz_close(m_oggz);
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90 m_oggz = 0;
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91
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92 if (isDecodeCacheInitialised()) finishDecodeCache();
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93 endSerialised();
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94
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95 } else {
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96
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97 if (m_reporter) m_reporter->setProgress(100);
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98
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99 while (oggz_read(m_oggz, 1024) > 0 &&
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100 (m_channelCount == 0 || m_fileRate == 0 || m_sampleRate == 0));
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101
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102 if (m_channelCount > 0) {
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103 m_decodeThread = new DecodeThread(this);
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104 m_decodeThread->start();
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105 }
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106 }
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107 }
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108
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109 OggVorbisFileReader::~OggVorbisFileReader()
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110 {
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111 // SVDEBUG << "OggVorbisFileReader::~OggVorbisFileReader(" << m_path << "): now have " << (--instances) << " instances" << endl;
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112 if (m_decodeThread) {
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113 m_cancelled = true;
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114 m_decodeThread->wait();
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115 delete m_decodeThread;
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116 }
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117 }
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118
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119 void
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120 OggVorbisFileReader::cancelled()
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121 {
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122 m_cancelled = true;
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123 }
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124
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125 void
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126 OggVorbisFileReader::DecodeThread::run()
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127 {
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128 if (m_reader->m_cacheMode == CacheInTemporaryFile) {
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129 m_reader->m_completion = 1;
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130 m_reader->startSerialised("OggVorbisFileReader::Decode");
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131 }
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132
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133 while (oggz_read(m_reader->m_oggz, 1024) > 0);
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134
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135 fish_sound_delete(m_reader->m_fishSound);
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136 m_reader->m_fishSound = 0;
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137 oggz_close(m_reader->m_oggz);
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138 m_reader->m_oggz = 0;
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139
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140 if (m_reader->isDecodeCacheInitialised()) m_reader->finishDecodeCache();
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141 m_reader->m_completion = 100;
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142
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143 m_reader->endSerialised();
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144 }
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145
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146 int
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147 OggVorbisFileReader::readPacket(OGGZ *, ogg_packet *packet, long, void *data)
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148 {
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149 OggVorbisFileReader *reader = (OggVorbisFileReader *)data;
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150 FishSound *fs = reader->m_fishSound;
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151
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152 fish_sound_prepare_truncation(fs, packet->granulepos, int(packet->e_o_s));
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153 fish_sound_decode(fs, packet->packet, packet->bytes);
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154
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155 reader->m_bytesRead += packet->bytes;
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156
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157 // The number of bytes read by this function is smaller than
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158 // the file size because of the packet headers
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159 int p = int(lrint(double(reader->m_bytesRead) * 114 /
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160 double(reader->m_fileSize)));
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161 if (p > 99) p = 99;
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162 reader->m_completion = p;
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163 reader->progress(p);
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164
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165 if (reader->m_fileSize > 0 && reader->m_reporter) {
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166 reader->m_reporter->setProgress(p);
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167 }
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168
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169 if (reader->m_cancelled) return 1;
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170 return 0;
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171 }
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172
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173 int
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174 OggVorbisFileReader::acceptFrames(FishSound *fs, float **frames, long nframes,
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175 void *data)
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176 {
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177 OggVorbisFileReader *reader = (OggVorbisFileReader *)data;
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178
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179 if (!reader->m_commentsRead) {
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180 const FishSoundComment *comment;
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181 comment = fish_sound_comment_first_byname(fs, (char *)"TITLE");
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182 if (comment && comment->value) {
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183 reader->m_title = QString::fromUtf8(comment->value);
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184 }
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185 comment = fish_sound_comment_first_byname(fs, (char *)"ARTIST");
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186 if (comment && comment->value) {
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187 reader->m_maker = QString::fromUtf8(comment->value);
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188 }
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189 comment = fish_sound_comment_first(fs);
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190 while (comment) {
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191 reader->m_tags[QString::fromUtf8(comment->name).toUpper()] =
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192 QString::fromUtf8(comment->value);
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193 comment = fish_sound_comment_next(fs, comment);
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194 }
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195 reader->m_commentsRead = true;
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196 }
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197
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198 if (reader->m_channelCount == 0) {
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199 FishSoundInfo fsinfo;
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200 fish_sound_command(fs, FISH_SOUND_GET_INFO,
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201 &fsinfo, sizeof(FishSoundInfo));
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202 reader->m_fileRate = fsinfo.samplerate;
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203 reader->m_channelCount = fsinfo.channels;
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204 reader->initialiseDecodeCache();
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205 }
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206
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207 if (nframes > 0) {
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208 reader->addSamplesToDecodeCache(frames, nframes);
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209 }
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210
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211 if (reader->m_cancelled) return 1;
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212 return 0;
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213 }
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214
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215 void
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216 OggVorbisFileReader::getSupportedExtensions(std::set<QString> &extensions)
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217 {
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218 extensions.insert("ogg");
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219 extensions.insert("oga");
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220 }
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221
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222 bool
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223 OggVorbisFileReader::supportsExtension(QString extension)
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224 {
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225 std::set<QString> extensions;
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226 getSupportedExtensions(extensions);
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227 return (extensions.find(extension.toLower()) != extensions.end());
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228 }
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229
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230 bool
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231 OggVorbisFileReader::supportsContentType(QString type)
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232 {
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233 return (type == "application/ogg");
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234 }
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235
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236 bool
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237 OggVorbisFileReader::supports(FileSource &source)
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238 {
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239 return (supportsExtension(source.getExtension()) ||
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240 supportsContentType(source.getContentType()));
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241 }
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242
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243 #endif
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244 #endif
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