2  * Copyright (C) 2002-2009, Xiph.org Foundation
34  function: maintain the info structure, info <-> header packets
53   while(bytes--){  in _v_readstring()
58 void vorbis_comment_init(vorbis_comment *vc){  in vorbis_comment_init()  argument
59   memset(vc,0,sizeof(*vc));  in vorbis_comment_init()
62 /* This is more or less the same as strncasecmp - but that doesn't exist
74 char *vorbis_comment_query(vorbis_comment *vc, char *tag, int count){  in vorbis_comment_query()  argument
83   for(i=0;i<vc->comments;i++){  in vorbis_comment_query()
84     if(!tagcompare(vc->user_comments[i], fulltag, taglen)){  in vorbis_comment_query()
87       	return vc->user_comments[i] + taglen;  in vorbis_comment_query()
95 int vorbis_comment_query_count(vorbis_comment *vc, char *tag){  in vorbis_comment_query_count()  argument
102   for(i=0;i<vc->comments;i++){  in vorbis_comment_query_count()
103     if(!tagcompare(vc->user_comments[i], fulltag, taglen))  in vorbis_comment_query_count()
110 void vorbis_comment_clear(vorbis_comment *vc){  in vorbis_comment_clear()  argument
111   if(vc){  in vorbis_comment_clear()
113     for(i=0;i<vc->comments;i++)  in vorbis_comment_clear()
114       if(vc->user_comments[i])_ogg_free(vc->user_comments[i]);  in vorbis_comment_clear()
115     if(vc->user_comments)_ogg_free(vc->user_comments);  in vorbis_comment_clear()
116 	if(vc->comment_lengths)_ogg_free(vc->comment_lengths);  in vorbis_comment_clear()
117     if(vc->vendor)_ogg_free(vc->vendor);  in vorbis_comment_clear()
119   memset(vc,0,sizeof(*vc));  in vorbis_comment_clear()
125   codec_setup_info *ci = (codec_setup_info *)vi->codec_setup;  in vorbis_info_blocksize()
126   return ci ? ci->blocksizes[zo] : -1;  in vorbis_info_blocksize()
132   vi->codec_setup=(codec_setup_info *)_ogg_calloc(1,sizeof(codec_setup_info));  in vorbis_info_init()
136   codec_setup_info     *ci=(codec_setup_info *)vi->codec_setup;  in vorbis_info_clear()
141     if(ci->mode_param)_ogg_free(ci->mode_param);  in vorbis_info_clear()
143     if(ci->map_param){  in vorbis_info_clear()
144       for(i=0;i<ci->maps;i++) /* unpack does the range checking */  in vorbis_info_clear()
145 	mapping_clear_info(ci->map_param+i);  in vorbis_info_clear()
146       _ogg_free(ci->map_param);  in vorbis_info_clear()
149     if(ci->floor_param){  in vorbis_info_clear()
150       for(i=0;i<ci->floors;i++) /* unpack does the range checking */  in vorbis_info_clear()
151 	if(ci->floor_type[i])  in vorbis_info_clear()
152 	  floor1_free_info(ci->floor_param[i]);  in vorbis_info_clear()
154 	  floor0_free_info(ci->floor_param[i]);  in vorbis_info_clear()
155       _ogg_free(ci->floor_param);  in vorbis_info_clear()
156       _ogg_free(ci->floor_type);  in vorbis_info_clear()
159     if(ci->residue_param){  in vorbis_info_clear()
160       for(i=0;i<ci->residues;i++) /* unpack does the range checking */  in vorbis_info_clear()
161 	res_clear_info(ci->residue_param+i);  in vorbis_info_clear()
162       _ogg_free(ci->residue_param);  in vorbis_info_clear()
165     if(ci->book_param){  in vorbis_info_clear()
166       for(i=0;i<ci->books;i++)  in vorbis_info_clear()
167 	vorbis_book_clear(ci->book_param+i);  in vorbis_info_clear()
168       _ogg_free(ci->book_param);  in vorbis_info_clear()
180   codec_setup_info     *ci=(codec_setup_info *)vi->codec_setup;  in _vorbis_unpack_info()
183   vi->version=oggpack_read(opb,32);  in _vorbis_unpack_info()
184   if(vi->version!=0)return(OV_EVERSION);  in _vorbis_unpack_info()
186   vi->channels=oggpack_read(opb,8);  in _vorbis_unpack_info()
187   vi->rate=oggpack_read(opb,32);  in _vorbis_unpack_info()
189   vi->bitrate_upper=oggpack_read(opb,32);  in _vorbis_unpack_info()
190   vi->bitrate_nominal=oggpack_read(opb,32);  in _vorbis_unpack_info()
191   vi->bitrate_lower=oggpack_read(opb,32);  in _vorbis_unpack_info()
193   ci->blocksizes[0]=1<<oggpack_read(opb,4);  in _vorbis_unpack_info()
194   ci->blocksizes[1]=1<<oggpack_read(opb,4);  in _vorbis_unpack_info()
197   if(vi->rate>=64000 || ci->blocksizes[1]>4096)goto err_out;  in _vorbis_unpack_info()
199   if(vi->rate<64000 && ci->blocksizes[1]>4096)goto err_out;  in _vorbis_unpack_info()
202   if(vi->rate<1)goto err_out;  in _vorbis_unpack_info()
203   if(vi->channels<1)goto err_out;  in _vorbis_unpack_info()
204   if(ci->blocksizes[0]<64)goto err_out;  in _vorbis_unpack_info()
205   if(ci->blocksizes[1]<ci->blocksizes[0])goto err_out;  in _vorbis_unpack_info()
206   if(ci->blocksizes[1]>8192)goto err_out;  in _vorbis_unpack_info()
216 int _vorbis_unpack_comment(vorbis_comment *vc,oggpack_buffer *opb){  in _vorbis_unpack_comment()  argument
220   vc->vendor=(char *)_ogg_calloc(vendorlen+1,1);  in _vorbis_unpack_comment()
221   if(!vc->vendor)goto err_out;  in _vorbis_unpack_comment()
222   _v_readstring(opb,vc->vendor,vendorlen);  in _vorbis_unpack_comment()
223   vc->comments=oggpack_read(opb,32);  in _vorbis_unpack_comment()
224   if(vc->comments<0)goto err_out;  in _vorbis_unpack_comment()
225   vc->user_comments=(char **)_ogg_calloc(vc->comments+1,sizeof(*vc->user_comments));  in _vorbis_unpack_comment()
226   if (!vc->user_comments){  in _vorbis_unpack_comment()
227       vc->comments=0;  in _vorbis_unpack_comment()
230   vc->comment_lengths=(int *)_ogg_calloc(vc->comments+1, sizeof(*vc->comment_lengths));  in _vorbis_unpack_comment()
231   if (!vc->comment_lengths)goto err_out;  in _vorbis_unpack_comment()
233   for(i=0;i<vc->comments;i++){  in _vorbis_unpack_comment()
236 	vc->comment_lengths[i]=len;  in _vorbis_unpack_comment()
237     vc->user_comments[i]=(char *)_ogg_calloc(len+1,1);  in _vorbis_unpack_comment()
238     if(!vc->user_comments[i])goto err_out;  in _vorbis_unpack_comment()
239     _v_readstring(opb,vc->user_comments[i],len);  in _vorbis_unpack_comment()
245   vorbis_comment_clear(vc);  in _vorbis_unpack_comment()
252   codec_setup_info     *ci=(codec_setup_info *)vi->codec_setup;  in _vorbis_unpack_books()
257   ci->books=oggpack_read(opb,8)+1;  in _vorbis_unpack_books()
258   ci->book_param=(codebook *)_ogg_calloc(ci->books,sizeof(*ci->book_param));  in _vorbis_unpack_books()
259   if(!ci->book_param){  in _vorbis_unpack_books()
260     ci->books=0;  in _vorbis_unpack_books()
263   for(i=0;i<ci->books;i++)  in _vorbis_unpack_books()
264     if(vorbis_book_unpack(opb,ci->book_param+i))goto err_out;  in _vorbis_unpack_books()
268   for(;i>=0;i--)  in _vorbis_unpack_books()
272   ci->floors=oggpack_read(opb,6)+1;  in _vorbis_unpack_books()
273   ci->floor_param=_ogg_calloc(ci->floors, sizeof(*ci->floor_param));  in _vorbis_unpack_books()
274   ci->floor_type=_ogg_calloc(ci->floors, sizeof(*ci->floor_type));  in _vorbis_unpack_books()
275   if(!ci->floor_param || !ci->floor_type){  in _vorbis_unpack_books()
276     ci->floors=0;  in _vorbis_unpack_books()
279   for(i=0;i<ci->floors;i++){  in _vorbis_unpack_books()
280     ci->floor_type[i]=(char)oggpack_read(opb,16);  in _vorbis_unpack_books()
281     if(ci->floor_type[i]<0 || ci->floor_type[i]>=VI_FLOORB)goto err_out;  in _vorbis_unpack_books()
282     if(ci->floor_type[i])  in _vorbis_unpack_books()
283       ci->floor_param[i]=floor1_info_unpack(vi,opb);  in _vorbis_unpack_books()
285       ci->floor_param[i]=floor0_info_unpack(vi,opb);  in _vorbis_unpack_books()
286     if(!ci->floor_param[i])goto err_out;  in _vorbis_unpack_books()
290   ci->residues=oggpack_read(opb,6)+1;  in _vorbis_unpack_books()
291   ci->residue_param=_ogg_calloc(ci->residues, sizeof(*ci->residue_param));  in _vorbis_unpack_books()
292   if (!ci->residue_param){  in _vorbis_unpack_books()
293     ci->residues=0;  in _vorbis_unpack_books()
296   for(i=0;i<ci->residues;i++)  in _vorbis_unpack_books()
297     if(res_unpack(ci->residue_param+i,vi,opb))goto err_out;  in _vorbis_unpack_books()
300   ci->maps=oggpack_read(opb,6)+1;  in _vorbis_unpack_books()
301   ci->map_param=_ogg_calloc(ci->maps, sizeof(*ci->map_param));  in _vorbis_unpack_books()
302   if (!ci->map_param){  in _vorbis_unpack_books()
303     ci->maps=0;  in _vorbis_unpack_books()
306   for(i=0;i<ci->maps;i++){  in _vorbis_unpack_books()
308     if(mapping_info_unpack(ci->map_param+i,vi,opb))goto err_out;  in _vorbis_unpack_books()
312   ci->modes=oggpack_read(opb,6)+1;  in _vorbis_unpack_books()
313   ci->mode_param=  in _vorbis_unpack_books()
314     (vorbis_info_mode *)_ogg_calloc(ci->modes, sizeof(*ci->mode_param));  in _vorbis_unpack_books()
315   if (!ci->mode_param){  in _vorbis_unpack_books()
316     ci->modes=0;  in _vorbis_unpack_books()
319   for(i=0;i<ci->modes;i++){  in _vorbis_unpack_books()
320     ci->mode_param[i].blockflag=(unsigned char)oggpack_read(opb,1);  in _vorbis_unpack_books()
323     ci->mode_param[i].mapping=(unsigned char)oggpack_read(opb,8);  in _vorbis_unpack_books()
324     if(ci->mode_param[i].mapping>=ci->maps)goto err_out;  in _vorbis_unpack_books()
340 int vorbis_dsp_headerin(vorbis_info *vi,vorbis_comment *vc,ogg_packet *op){  in vorbis_dsp_headerin()  argument
344     oggpack_readinit(&opb,op->packet);  in vorbis_dsp_headerin()
347     /* Also verify header-ness, vorbis */  in vorbis_dsp_headerin()
359 	if(!op->b_o_s){  in vorbis_dsp_headerin()
363 	if(vi->rate!=0){  in vorbis_dsp_headerin()
371 	if(vi->rate==0){  in vorbis_dsp_headerin()
376 	return(_vorbis_unpack_comment(vc,&opb));  in vorbis_dsp_headerin()
379 	if(vi->rate==0 || vc->vendor==NULL){  in vorbis_dsp_headerin()