Mercurial > otakunoraifu
annotate music2/koedec_ogg.cc @ 43:01aa5ddf7dc8
A lot of very minor improvements (deleted some unused variables, and other things like that...)
| author | thib |
|---|---|
| date | Tue, 24 Mar 2009 19:45:48 +0000 |
| parents | 4d7486cb20a9 |
| children | a85cdca1980a |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 * Copyright (c) 2004-2006 Kazunori "jagarl" Ueno | |
| 3 * All rights reserved. | |
| 4 * | |
| 5 * Redistribution and use in source and binary forms, with or without | |
| 6 * modification, are permitted provided that the following conditions | |
| 7 * are met: | |
| 8 * 1. Redistributions of source code must retain the above copyright | |
| 9 * notice, this list of conditions and the following disclaimer. | |
| 10 * 2. Redistributions in binary form must reproduce the above copyright | |
| 11 * notice, this list of conditions and the following disclaimer in the | |
| 12 * documentation and/or other materials provided with the distribution. | |
| 13 * 3. The name of the author may not be used to endorse or promote products | |
| 14 * derived from this software without specific prior written permission. | |
| 15 * | |
| 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR | |
| 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES | |
| 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. | |
| 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | |
| 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
| 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
| 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
| 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |
| 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 26 */ | |
| 27 | |
| 28 #include<stdio.h> | |
| 29 #include<string.h> | |
| 30 #include<stdlib.h> | |
| 31 #include"music.h" | |
| 32 #include"wavfile.h" | |
| 33 | |
| 34 extern int is_koe_ogg(char* head); | |
| 35 extern char* decode_koe_ogg(AvgKoeInfo info, int* dest_len); | |
| 36 | |
| 37 extern int is_koe_ogg(char* head) { | |
| 38 #if HAVE_LIBVORBISFILE || HAVE_LIBVORBISIDEC | |
| 39 if (strncmp(head, "OggS", 4) == 0) return 1; | |
| 40 else | |
| 41 #endif | |
| 42 return 0; | |
| 43 } | |
| 44 | |
| 45 #if HAVE_LIBVORBISFILE || HAVE_LIBVORBISIDEC | |
| 46 | |
| 47 #if HAVE_LIBVORBISFILE | |
| 48 #include<vorbis/vorbisfile.h> | |
| 49 #else /* HAVE_LIBVORBISIDEC */ | |
| 50 #include<tremor/ivorbiscodec.h> | |
| 51 #include<tremor/ivorbisfile.h> | |
| 52 #endif | |
| 53 | |
| 54 #define INITSIZE 65536 | |
| 55 | |
| 56 static int cur_size = 0; | |
| 57 static char* out = 0; | |
| 58 static void Resize(void) { | |
| 59 char* new_out = (char*)realloc(out, cur_size+INITSIZE); | |
| 60 if (new_out == 0) { | |
| 61 new_out = (char*)malloc(cur_size+INITSIZE); | |
| 62 memcpy(new_out, out, cur_size); | |
| 63 free(out); | |
| 64 } | |
| 65 out = new_out; | |
| 66 cur_size += INITSIZE; | |
| 67 } | |
| 68 | |
| 69 struct OggInfo { | |
| 70 FILE* stream; | |
| 71 int length; | |
| 72 int offset; | |
| 73 }; | |
| 74 /* ogg stream 読み込み用の dummy callback */ | |
| 75 static size_t ogg_readfunc(void* ptr, size_t size, size_t nmemb, void* datasource) { | |
| 76 OggInfo* info = (OggInfo*)datasource; | |
| 77 int pt = ftell(info->stream) - info->offset; | |
| 78 if (pt+size*nmemb > info->length) { | |
| 79 nmemb = (info->length-pt) / size; | |
| 80 } | |
| 81 return fread(ptr, size, nmemb, info->stream); | |
| 82 } | |
| 83 static int ogg_seekfunc(void* datasource, ogg_int64_t new_offset, int whence) { | |
| 84 int pt; | |
| 85 OggInfo* info = (OggInfo*)datasource; | |
| 86 if (whence == SEEK_SET) pt = info->offset + new_offset; | |
| 87 else if (whence == SEEK_CUR) pt = ftell(info->stream) + new_offset; | |
| 88 else if (whence == SEEK_END) pt = info->offset + info->length + new_offset; | |
| 89 int r = fseek(info->stream, pt, 0); | |
| 90 return r; | |
| 91 } | |
| 92 static long ogg_tellfunc(void* datasource) { | |
| 93 OggInfo* info = (OggInfo*)datasource; | |
| 94 int pos = ftell(info->stream); | |
| 95 if (pos == -1) return -1; | |
| 96 return pos-info->offset; | |
| 97 } | |
| 98 static int ogg_closefunc(void* datasource) { | |
| 99 return 0; | |
| 100 } | |
| 18 | 101 |
| 102 static int fseek_wrap(FILE *f,ogg_int64_t off,int whence){ | |
| 103 if(f==NULL)return(-1); | |
| 104 return fseek(f,off,whence); | |
| 105 } | |
| 106 | |
| 107 | |
|
2
422f3cb3614b
Enabled voice playing with "%04d/%04d%05d.ogg" format. Don't use a cache for this
thib
parents:
0
diff
changeset
|
108 int ogg_get_rate(FILE *stream) |
|
422f3cb3614b
Enabled voice playing with "%04d/%04d%05d.ogg" format. Don't use a cache for this
thib
parents:
0
diff
changeset
|
109 { |
|
422f3cb3614b
Enabled voice playing with "%04d/%04d%05d.ogg" format. Don't use a cache for this
thib
parents:
0
diff
changeset
|
110 OggVorbis_File vf; |
| 18 | 111 ov_callbacks callback; |
| 112 callback.read_func = (size_t (*)(void*, size_t, size_t, void*))fread; | |
| 113 callback.seek_func = (int (*)(void*, ogg_int64_t, int))fseek_wrap; | |
| 114 callback.tell_func = (long int (*)(void*))ftell; | |
| 7 | 115 callback.close_func = NULL; |
| 116 ov_test_callbacks(stream, &vf, NULL, 0, callback); | |
| 117 int rate = vf.vi->rate; | |
| 118 ov_clear(&vf); | |
| 119 return rate; | |
|
2
422f3cb3614b
Enabled voice playing with "%04d/%04d%05d.ogg" format. Don't use a cache for this
thib
parents:
0
diff
changeset
|
120 } |
| 0 | 121 |
| 122 extern char* decode_koe_ogg(AvgKoeInfo info, int* dest_len) { | |
| 123 if (info.stream == 0) return 0; | |
| 124 // 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 | |
| 125 // 必要な部分だけ切り出して callback 経由で帰す | |
| 126 fseek(info.stream, info.offset, 0); | |
| 127 | |
| 128 ov_callbacks callback; | |
| 129 callback.read_func = &ogg_readfunc; | |
| 130 callback.seek_func = &ogg_seekfunc; | |
| 131 callback.close_func = &ogg_closefunc; | |
| 132 callback.tell_func = &ogg_tellfunc; | |
| 133 | |
| 134 OggInfo oinfo; | |
| 135 oinfo.stream = info.stream; | |
| 136 oinfo.length = info.length; | |
| 137 oinfo.offset = info.offset; | |
| 138 | |
| 139 OggVorbis_File vf; | |
| 140 int r = ov_open_callbacks((void*)&oinfo, &vf, 0, 0, callback); | |
| 141 if (r != 0) { | |
| 142 fprintf(stderr,"ogg stream err: %d\n",r); | |
| 143 return 0; | |
| 144 } | |
| 145 vorbis_info* vinfo = ov_info(&vf, 0); | |
| 146 info.rate = vinfo->rate; | |
| 147 int channels = vinfo->channels; | |
| 148 | |
| 149 int cur = 0x2c; | |
| 150 cur_size = INITSIZE; | |
| 151 out = (char*)malloc(cur_size); | |
| 152 | |
| 153 int current_section; | |
| 154 do { | |
| 155 #if HAVE_LIBVORBISFILE | |
| 156 r = ov_read(&vf, out+cur, cur_size-cur, 0, 2, 1, 0); | |
| 157 #else /* HAVE_LIBVORBISIDEC */ | |
| 158 r = ov_read(&vf, out+cur, cur_size-cur, ¤t_section); | |
| 159 #endif | |
| 160 if (r <= 0) break; | |
| 161 cur += r; | |
| 162 if (cur_size-INITSIZE/4 < cur) Resize(); | |
| 163 } while(1); | |
| 164 ov_clear(&vf); | |
| 165 | |
| 166 *dest_len = cur; // うまくコンバートできてるのかなあ…… | |
| 167 const char* header = MakeWavHeader(info.rate, channels, 2, cur); | |
| 168 memcpy(out, header, 0x2c); | |
| 169 | |
| 170 char* ret = out; | |
| 171 out = 0; | |
| 172 | |
| 173 return ret; | |
| 174 } | |
| 175 struct OggFILE_impl { | |
| 176 OggVorbis_File vf; | |
| 177 ov_callbacks callback; | |
| 178 OggInfo oinfo; | |
| 179 OggFILE_impl(FILE*, int); | |
| 180 }; | |
| 181 | |
| 182 OggFILE_impl::OggFILE_impl(FILE* stream, int length) { | |
| 183 callback.read_func = &ogg_readfunc; | |
| 184 callback.seek_func = &ogg_seekfunc; | |
| 185 callback.close_func = &ogg_closefunc; | |
| 186 callback.tell_func = &ogg_tellfunc; | |
| 187 oinfo.stream = stream; | |
| 188 oinfo.length = length; | |
| 189 oinfo.offset = ftell(stream); | |
| 190 } | |
| 191 | |
| 192 OggFILE::OggFILE(FILE* stream, int len) { | |
| 193 pimpl = new OggFILE_impl(stream, len); | |
| 194 int r = ov_open_callbacks( (void*)&(pimpl->oinfo), &(pimpl->vf), 0, 0, pimpl->callback); | |
| 195 if (r != 0) { | |
| 196 delete pimpl; | |
| 197 pimpl = 0; | |
| 198 return; | |
| 199 } | |
| 200 vorbis_info* vinfo = ov_info(&(pimpl->vf), 0); | |
| 201 wavinfo.SamplingRate = vinfo->rate; | |
| 202 wavinfo.Channels = vinfo->channels; | |
| 203 wavinfo.DataBits = 16; | |
| 204 } | |
| 205 OggFILE::~OggFILE() { | |
| 206 if (pimpl) { | |
| 207 ov_clear(&(pimpl->vf)); | |
| 208 fclose(pimpl->oinfo.stream); | |
| 209 delete pimpl; | |
| 210 } | |
| 211 } | |
| 212 int OggFILE::Read(char* buf, int blksize, int blklen) { | |
| 213 if (pimpl == 0) return -1; | |
| 214 int current_section; | |
| 215 #if HAVE_LIBVORBISFILE | |
| 216 int r = ov_read( &(pimpl->vf), buf, blksize*blklen, 0, 2, 1, 0); | |
| 217 #else /* HAVE_LIBVORBISIDEC */ | |
| 218 int r = ov_read( &(pimpl->vf), buf, blksize*blklen, ¤t_section); | |
| 219 #endif | |
| 220 if (r <= 0) { // end of file | |
| 221 return -1; | |
| 222 } | |
| 223 while(r < blksize*blklen) { | |
| 224 #if HAVE_LIBVORBISFILE | |
| 225 int dr = ov_read(&(pimpl->vf), buf+r, blksize*blklen-r, 0, 2, 1, 0); | |
| 226 #else /* HAVE_LIBVORBISIDEC */ | |
| 227 int dr = ov_read(&(pimpl->vf), buf+r, blksize*blklen-r, ¤t_section); | |
| 228 #endif | |
| 229 if (dr <= 0) break; | |
| 230 r += dr; | |
| 231 } | |
| 232 return r / blksize; | |
| 233 } | |
| 234 void OggFILE::Seek(int count) { | |
| 235 ov_pcm_seek(&(pimpl->vf), count); | |
| 236 return; | |
| 237 } | |
| 238 #else | |
| 239 extern char* decode_koe_ogg(AvgKoeInfo info, int* dest_len) { | |
| 240 return 0; | |
| 241 } | |
| 242 OggFILE::OggFILE(FILE* stream, int a) {pimpl = 0;} | |
| 243 OggFILE::~OggFILE(){} | |
| 244 void OggFILE::Seek(int count){} | |
| 245 int OggFILE::Read(char* buf, int blksize, int blklen){return -1;} | |
| 246 #endif |