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1 /*
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2 * Copyright (c) 2004-2006 Kazunori "jagarl" Ueno
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3 * All rights reserved.
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4 *
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5 * Redistribution and use in source and binary forms, with or without
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6 * modification, are permitted provided that the following conditions
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7 * are met:
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8 * 1. Redistributions of source code must retain the above copyright
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9 * notice, this list of conditions and the following disclaimer.
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10 * 2. Redistributions in binary form must reproduce the above copyright
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11 * notice, this list of conditions and the following disclaimer in the
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12 * documentation and/or other materials provided with the distribution.
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13 * 3. The name of the author may not be used to endorse or promote products
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14 * derived from this software without specific prior written permission.
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15 *
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16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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26 */
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27
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28 #include<stdio.h>
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29 #include<string.h>
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30 #include<stdlib.h>
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31 #include"music.h"
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32 #include"wavfile.h"
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33
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34 extern int is_koe_ogg(char* head);
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35 extern char* decode_koe_ogg(AvgKoeInfo info, int* dest_len);
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36
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37 extern int is_koe_ogg(char* head) {
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38 #if HAVE_LIBVORBISFILE || HAVE_LIBVORBISIDEC
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39 if (strncmp(head, "OggS", 4) == 0) return 1;
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40 else
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41 #endif
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42 return 0;
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43 }
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44
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45 #if HAVE_LIBVORBISFILE || HAVE_LIBVORBISIDEC
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46
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47 #if HAVE_LIBVORBISFILE
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48 #include<vorbis/vorbisfile.h>
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49 #else /* HAVE_LIBVORBISIDEC */
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50 #include<tremor/ivorbiscodec.h>
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51 #include<tremor/ivorbisfile.h>
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52 #endif
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53
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54 #define INITSIZE 65536
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55
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56 static int cur_size = 0;
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57 static char* out = 0;
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58 static void Resize(void) {
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59 char* new_out = (char*)realloc(out, cur_size+INITSIZE);
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60 if (new_out == 0) {
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61 new_out = (char*)malloc(cur_size+INITSIZE);
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62 memcpy(new_out, out, cur_size);
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63 free(out);
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64 }
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65 out = new_out;
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66 cur_size += INITSIZE;
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67 }
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68
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69 struct OggInfo {
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70 FILE* stream;
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71 int length;
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72 int offset;
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73 };
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74 /* ogg stream 読み込み用の dummy callback */
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75 static size_t ogg_readfunc(void* ptr, size_t size, size_t nmemb, void* datasource) {
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76 OggInfo* info = (OggInfo*)datasource;
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77 int pt = ftell(info->stream) - info->offset;
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78 if (pt+size*nmemb > info->length) {
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79 nmemb = (info->length-pt) / size;
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80 }
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81 return fread(ptr, size, nmemb, info->stream);
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82 }
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83 static int ogg_seekfunc(void* datasource, ogg_int64_t new_offset, int whence) {
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84 int pt;
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85 OggInfo* info = (OggInfo*)datasource;
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86 if (whence == SEEK_SET) pt = info->offset + new_offset;
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87 else if (whence == SEEK_CUR) pt = ftell(info->stream) + new_offset;
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88 else if (whence == SEEK_END) pt = info->offset + info->length + new_offset;
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89 int r = fseek(info->stream, pt, 0);
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90 return r;
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91 }
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92 static long ogg_tellfunc(void* datasource) {
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93 OggInfo* info = (OggInfo*)datasource;
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94 int pos = ftell(info->stream);
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95 if (pos == -1) return -1;
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96 return pos-info->offset;
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97 }
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98 static int ogg_closefunc(void* datasource) {
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99 return 0;
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100 }
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101
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102 extern char* decode_koe_ogg(AvgKoeInfo info, int* dest_len) {
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103 if (info.stream == 0) return 0;
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104 // Voice ファイルを直接指定すると全ストリームを再生してしまうので
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105 // 必要な部分だけ切り出して callback 経由で帰す
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106 fseek(info.stream, info.offset, 0);
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107
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108 ov_callbacks callback;
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109 callback.read_func = &ogg_readfunc;
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110 callback.seek_func = &ogg_seekfunc;
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111 callback.close_func = &ogg_closefunc;
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112 callback.tell_func = &ogg_tellfunc;
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113
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114 OggInfo oinfo;
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115 oinfo.stream = info.stream;
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116 oinfo.length = info.length;
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117 oinfo.offset = info.offset;
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118
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119 OggVorbis_File vf;
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120 int r = ov_open_callbacks((void*)&oinfo, &vf, 0, 0, callback);
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121 if (r != 0) {
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122 fprintf(stderr,"ogg stream err: %d\n",r);
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123 return 0;
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124 }
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125 vorbis_info* vinfo = ov_info(&vf, 0);
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126 info.rate = vinfo->rate;
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127 int channels = vinfo->channels;
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128
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129 int cur = 0x2c;
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130 cur_size = INITSIZE;
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131 out = (char*)malloc(cur_size);
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132
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133 int current_section;
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134 do {
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135 #if HAVE_LIBVORBISFILE
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136 r = ov_read(&vf, out+cur, cur_size-cur, 0, 2, 1, 0);
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137 #else /* HAVE_LIBVORBISIDEC */
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138 r = ov_read(&vf, out+cur, cur_size-cur, ¤t_section);
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139 #endif
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140 if (r <= 0) break;
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141 cur += r;
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142 if (cur_size-INITSIZE/4 < cur) Resize();
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143 } while(1);
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144 ov_clear(&vf);
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145
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146 *dest_len = cur; // うまくコンバートできてるのかなあ……
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147 const char* header = MakeWavHeader(info.rate, channels, 2, cur);
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148 memcpy(out, header, 0x2c);
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149
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150 char* ret = out;
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151 out = 0;
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152
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153 return ret;
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154 }
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155 struct OggFILE_impl {
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156 OggVorbis_File vf;
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157 ov_callbacks callback;
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158 OggInfo oinfo;
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159 OggFILE_impl(FILE*, int);
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160 };
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161
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162 OggFILE_impl::OggFILE_impl(FILE* stream, int length) {
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163 callback.read_func = &ogg_readfunc;
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164 callback.seek_func = &ogg_seekfunc;
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165 callback.close_func = &ogg_closefunc;
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166 callback.tell_func = &ogg_tellfunc;
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167 oinfo.stream = stream;
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168 oinfo.length = length;
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169 oinfo.offset = ftell(stream);
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170 }
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171
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172 OggFILE::OggFILE(FILE* stream, int len) {
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173 pimpl = new OggFILE_impl(stream, len);
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174 int r = ov_open_callbacks( (void*)&(pimpl->oinfo), &(pimpl->vf), 0, 0, pimpl->callback);
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175 if (r != 0) {
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176 delete pimpl;
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177 pimpl = 0;
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178 return;
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179 }
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180 vorbis_info* vinfo = ov_info(&(pimpl->vf), 0);
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181 wavinfo.SamplingRate = vinfo->rate;
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182 wavinfo.Channels = vinfo->channels;
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183 wavinfo.DataBits = 16;
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184 }
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185 OggFILE::~OggFILE() {
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186 if (pimpl) {
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187 ov_clear(&(pimpl->vf));
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188 fclose(pimpl->oinfo.stream);
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189 delete pimpl;
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190 }
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191 }
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192 int OggFILE::Read(char* buf, int blksize, int blklen) {
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193 if (pimpl == 0) return -1;
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194 int current_section;
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195 #if HAVE_LIBVORBISFILE
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196 int r = ov_read( &(pimpl->vf), buf, blksize*blklen, 0, 2, 1, 0);
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197 #else /* HAVE_LIBVORBISIDEC */
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198 int r = ov_read( &(pimpl->vf), buf, blksize*blklen, ¤t_section);
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199 #endif
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200 if (r <= 0) { // end of file
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201 return -1;
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202 }
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203 while(r < blksize*blklen) {
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204 #if HAVE_LIBVORBISFILE
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205 int dr = ov_read(&(pimpl->vf), buf+r, blksize*blklen-r, 0, 2, 1, 0);
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206 #else /* HAVE_LIBVORBISIDEC */
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207 int dr = ov_read(&(pimpl->vf), buf+r, blksize*blklen-r, ¤t_section);
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208 #endif
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209 if (dr <= 0) break;
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210 r += dr;
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211 }
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212 return r / blksize;
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213 }
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214 void OggFILE::Seek(int count) {
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215 ov_pcm_seek(&(pimpl->vf), count);
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216 return;
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217 }
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218 #else
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219 extern char* decode_koe_ogg(AvgKoeInfo info, int* dest_len) {
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220 return 0;
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221 }
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222 OggFILE::OggFILE(FILE* stream, int a) {pimpl = 0;}
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223 OggFILE::~OggFILE(){}
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224 void OggFILE::Seek(int count){}
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225 int OggFILE::Read(char* buf, int blksize, int blklen){return -1;}
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226 #endif
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