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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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18
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101
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102 static int fseek_wrap(FILE *f,ogg_int64_t off,int whence){
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103 if(f==NULL)return(-1);
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104 return fseek(f,off,whence);
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105 }
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106
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0
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107 extern char* decode_koe_ogg(AvgKoeInfo info, int* dest_len) {
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108 if (info.stream == 0) return 0;
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109 // 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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110 // 必要な部分だけ切り出して callback 経由で帰す
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111 fseek(info.stream, info.offset, 0);
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112
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113 ov_callbacks callback;
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114 callback.read_func = &ogg_readfunc;
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115 callback.seek_func = &ogg_seekfunc;
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116 callback.close_func = &ogg_closefunc;
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117 callback.tell_func = &ogg_tellfunc;
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118
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119 OggInfo oinfo;
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120 oinfo.stream = info.stream;
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121 oinfo.length = info.length;
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122 oinfo.offset = info.offset;
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123
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124 OggVorbis_File vf;
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125 int r = ov_open_callbacks((void*)&oinfo, &vf, 0, 0, callback);
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126 if (r != 0) {
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127 fprintf(stderr,"ogg stream err: %d\n",r);
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128 return 0;
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129 }
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130 vorbis_info* vinfo = ov_info(&vf, 0);
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131 info.rate = vinfo->rate;
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132 int channels = vinfo->channels;
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133
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134 int cur = 0x2c;
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135 cur_size = INITSIZE;
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136 out = (char*)malloc(cur_size);
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137
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138 do {
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139 #if HAVE_LIBVORBISFILE
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44
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140 r = ov_read(&vf, out+cur, cur_size-cur, 0, 2, 1, NULL);
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0
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141 #else /* HAVE_LIBVORBISIDEC */
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44
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142 r = ov_read(&vf, out+cur, cur_size-cur, NULL);
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0
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143 #endif
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144 if (r <= 0) break;
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145 cur += r;
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146 if (cur_size-INITSIZE/4 < cur) Resize();
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147 } while(1);
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148 ov_clear(&vf);
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149
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150 *dest_len = cur; // うまくコンバートできてるのかなあ……
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151 const char* header = MakeWavHeader(info.rate, channels, 2, cur);
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152 memcpy(out, header, 0x2c);
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153
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154 char* ret = out;
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155 out = 0;
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156
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157 return ret;
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158 }
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159 struct OggFILE_impl {
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160 OggVorbis_File vf;
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161 ov_callbacks callback;
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162 OggInfo oinfo;
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163 OggFILE_impl(FILE*, int);
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164 };
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165
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166 OggFILE_impl::OggFILE_impl(FILE* stream, int length) {
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167 callback.read_func = &ogg_readfunc;
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168 callback.seek_func = &ogg_seekfunc;
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169 callback.close_func = &ogg_closefunc;
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170 callback.tell_func = &ogg_tellfunc;
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171 oinfo.stream = stream;
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172 oinfo.length = length;
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173 oinfo.offset = ftell(stream);
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174 }
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175
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176 OggFILE::OggFILE(FILE* stream, int len) {
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177 pimpl = new OggFILE_impl(stream, len);
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178 int r = ov_open_callbacks( (void*)&(pimpl->oinfo), &(pimpl->vf), 0, 0, pimpl->callback);
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179 if (r != 0) {
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180 delete pimpl;
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181 pimpl = 0;
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182 return;
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183 }
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184 vorbis_info* vinfo = ov_info(&(pimpl->vf), 0);
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185 wavinfo.SamplingRate = vinfo->rate;
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186 wavinfo.Channels = vinfo->channels;
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187 wavinfo.DataBits = 16;
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188 }
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189 OggFILE::~OggFILE() {
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190 if (pimpl) {
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191 ov_clear(&(pimpl->vf));
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192 fclose(pimpl->oinfo.stream);
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193 delete pimpl;
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194 }
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195 }
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196 int OggFILE::Read(char* buf, int blksize, int blklen) {
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197 if (pimpl == 0) return -1;
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198 #if HAVE_LIBVORBISFILE
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44
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199 int r = ov_read( &(pimpl->vf), buf, blksize*blklen, 0, 2, 1, NULL);
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0
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200 #else /* HAVE_LIBVORBISIDEC */
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44
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201 int r = ov_read( &(pimpl->vf), buf, blksize*blklen, NULL);
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0
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202 #endif
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203 if (r <= 0) { // end of file
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204 return -1;
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205 }
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206 while(r < blksize*blklen) {
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207 #if HAVE_LIBVORBISFILE
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44
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208 int dr = ov_read(&(pimpl->vf), buf+r, blksize*blklen-r, 0, 2, 1, NULL);
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0
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209 #else /* HAVE_LIBVORBISIDEC */
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44
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210 int dr = ov_read(&(pimpl->vf), buf+r, blksize*blklen-r, NULL);
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0
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211 #endif
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212 if (dr <= 0) break;
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213 r += dr;
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214 }
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215 return r / blksize;
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216 }
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217 void OggFILE::Seek(int count) {
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218 ov_pcm_seek(&(pimpl->vf), count);
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219 return;
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220 }
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221 #else
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222 extern char* decode_koe_ogg(AvgKoeInfo info, int* dest_len) {
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223 return 0;
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224 }
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225 OggFILE::OggFILE(FILE* stream, int a) {pimpl = 0;}
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226 OggFILE::~OggFILE(){}
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227 void OggFILE::Seek(int count){}
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228 int OggFILE::Read(char* buf, int blksize, int blklen){return -1;}
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229 #endif
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