static int _vorbis_skip_comment(oggpack_buffer *opb)
{
int i,vendorlen,comments;
vendorlen=oggpack_read32(opb,32);
if(vendorlen<0)
goto err_out;
oggpack_adv(opb,vendorlen*8);
comments=oggpack_read32(opb,32);
if(comments<0)
goto err_out;
for(i=0;i<comments;i++){
int len=oggpack_read32(opb,32);
if(len<0)
goto err_out;
oggpack_adv(opb,len*8);
}
if(oggpack_read1(opb)!=1)
goto err_out; /* EOP check */
oggpack_adv(opb,7); // byte alignment
return(0);
err_out:
return(OV_EBADHEADER);
}
static int _vorbis_unpack_comment(vorbis_comment *vc,oggpack_buffer *opb)
{
int i;
int vendorlen=oggpack_read32(opb,32);
if(vendorlen<0)
goto err_out;
vc->vendor=_ogg_calloc(vendorlen+1,1);
_v_readstring(opb,vc->vendor,vendorlen);
vc->comments=oggpack_read32(opb,32);
if(vc->comments<0)
goto err_out;
vc->user_comments=_ogg_calloc(vc->comments+1,sizeof(*vc->user_comments));
vc->comment_lengths=_ogg_calloc(vc->comments+1, sizeof(*vc->comment_lengths));
for(i=0;i<vc->comments;i++){
int len=oggpack_read32(opb,32);
if(len<0)
goto err_out;
vc->comment_lengths[i]=len;
vc->user_comments[i]=_ogg_calloc(len+1,1);
_v_readstring(opb,vc->user_comments[i],len);
}
if(oggpack_read1(opb)!=1)
goto err_out; /* EOP check */
oggpack_adv(opb,7); // byte alignment
return(0);
err_out:
vorbis_comment_clear(vc);
return(OV_EBADHEADER);
}
static PyObject * py_ogg_oggpack_adv(PyObject *self, PyObject *args) {
oggpack_buffer * b;
int bits;
int size;
PyArg_ParseTuple(args, "s#i", &b, &size, &bits);
oggpack_adv(b, bits);
Py_INCREF(Py_None);
return Py_None;
};
/*
* Class: org_tritonus_lowlevel_ogg_Buffer
* Method: adv
* Signature: (I)V
*/
JNIEXPORT void JNICALL
Java_org_tritonus_lowlevel_ogg_Buffer_adv
(JNIEnv* env, jobject obj, jint nBits)
{
oggpack_buffer* handle;
if (debug_flag) { fprintf(debug_file, "Java_org_tritonus_lowlevel_ogg_Buffer_adv(): begin\n"); }
handle = getHandle(env, obj);
oggpack_adv(handle, nBits);
if (debug_flag) { fprintf(debug_file, "Java_org_tritonus_lowlevel_ogg_Buffer_adv(): end\n"); }
}
static int _vorbis_unpack_info(vorbis_info *vi,oggpack_buffer *opb)
{
codec_setup_info *ci=vi->codec_setup;
if(!ci)
return(OV_EFAULT);
if(oggpack_read32(opb,32)!=0) // version
return(OV_EVERSION);
vi->channels=vi->outchannels=oggpack_read24(opb,8);
vi->rate =oggpack_read32(opb,32);
oggpack_adv(opb,32); // bitrate_upper
vi->bitrate_nominal=oggpack_read32(opb,32);
oggpack_adv(opb,32); // bitrate_lower
ci->blocksizes[0]=1<<oggpack_read24(opb,4);
ci->blocksizes[1]=1<<oggpack_read24(opb,4);
if(vi->rate<1)
goto err_out;
if(vi->channels<1)
goto err_out;
if(ci->blocksizes[0]<8)
goto err_out;
if(ci->blocksizes[1]<ci->blocksizes[0])
goto err_out;
if(oggpack_read1(opb)!=1)
goto err_out; /* EOP check */
oggpack_adv(opb,7); // byte alignment
return(0);
err_out:
vorbis_info_clear(vi);
return(OV_EBADHEADER);
}
static int _vorbis_unpack_books(vorbis_info *vi,oggpack_buffer *opb)
{
codec_setup_info *ci=vi->codec_setup;
int i;
if(!ci)
return(OV_EFAULT);
ci->books=oggpack_read24(opb,8)+1;
for(i=0;i<ci->books;i++){
ci->book_param[i]=_ogg_calloc(1,sizeof(*ci->book_param[i]));
if(vorbis_staticbook_unpack(opb,ci->book_param[i]))
goto err_out;
}
{
int times=oggpack_read24(opb,6)+1;
for(i=0;i<times;i++){
int test=oggpack_read24(opb,16);
if(test<0 || test>=VI_TIMEB)
goto err_out;
}
}
ci->floors=oggpack_read24(opb,6)+1;
for(i=0;i<ci->floors;i++){
ci->floor_type[i]=oggpack_read24(opb,16);
if(ci->floor_type[i]<0 || ci->floor_type[i]>=VI_FLOORB)
goto err_out;
ci->floor_param[i]=_floor_P[ci->floor_type[i]]->unpack(vi,opb);
if(!ci->floor_param[i])
goto err_out;
}
ci->residues=oggpack_read24(opb,6)+1;
for(i=0;i<ci->residues;i++){
ci->residue_type[i]=oggpack_read24(opb,16);
if(ci->residue_type[i]<0 || ci->residue_type[i]>=VI_RESB)
goto err_out;
ci->residue_param[i]=_residue_P[ci->residue_type[i]]->unpack(vi,opb);
if(!ci->residue_param[i])
goto err_out;
}
ci->maps=oggpack_read24(opb,6)+1;
for(i=0;i<ci->maps;i++){
ci->map_type[i]=oggpack_read24(opb,16);
if(ci->map_type[i]<0 || ci->map_type[i]>=VI_MAPB)
goto err_out;
ci->map_param[i]=_mapping_P[ci->map_type[i]]->unpack(vi,opb);
if(!ci->map_param[i])
goto err_out;
}
ci->modes=oggpack_read24(opb,6)+1;
for(i=0;i<ci->modes;i++){
ci->mode_param[i]=_ogg_calloc(1,sizeof(*ci->mode_param[i]));
ci->mode_param[i]->blockflag=oggpack_read1(opb);
ci->mode_param[i]->windowtype=oggpack_read24(opb,16);
ci->mode_param[i]->transformtype=oggpack_read24(opb,16);
ci->mode_param[i]->mapping=oggpack_read24(opb,8);
if(ci->mode_param[i]->windowtype>=VI_WINDOWB)goto err_out;
if(ci->mode_param[i]->transformtype>=VI_WINDOWB)goto err_out;
if(ci->mode_param[i]->mapping>=ci->maps)goto err_out;
}
if(oggpack_read1(opb)!=1)
goto err_out; /* top level EOP check */
oggpack_adv(opb,7); // byte alignment
return(0);
err_out:
vorbis_info_clear(vi);
return(OV_EBADHEADER);
}
static vorbis_info_mapping *mapping0_unpack(vorbis_info *vi,oggpack_buffer *opb)
{
int i;
vorbis_info_mapping0 *info=_ogg_calloc(1,sizeof(*info));
codec_setup_info *ci=vi->codec_setup;
if(!info)
goto err_out;
_ogg_memset(info,0,sizeof(*info));
if(oggpack_read1(opb))
info->submaps=oggpack_read24(opb,4)+1;
else
info->submaps=1;
if(oggpack_read1(opb)){
info->coupling_steps=oggpack_read24(opb,8)+1;
info->coupling_mag=_ogg_malloc(sizeof(*info->coupling_mag)*info->coupling_steps);
info->coupling_ang=_ogg_malloc(sizeof(*info->coupling_ang)*info->coupling_steps);
if(!info->coupling_mag || !info->coupling_ang)
goto err_out;
for(i=0;i<info->coupling_steps;i++){
int testM=info->coupling_mag[i]=oggpack_read24(opb,ilog(vi->channels));
int testA=info->coupling_ang[i]=oggpack_read24(opb,ilog(vi->channels));
if(testM<0 || testA<0 || testM==testA || testM>=vi->channels || testA>=vi->channels)
goto err_out;
}
}
if(oggpack_read24(opb,2)!=0)
goto err_out;
info->chmuxlist=_ogg_calloc(vi->channels,sizeof(*info->chmuxlist));
if(!info->chmuxlist)
goto err_out;
if(info->submaps>1){
for(i=0;i<vi->channels;i++){
info->chmuxlist[i]=oggpack_read24(opb,4);
if(info->chmuxlist[i]>=info->submaps)
goto err_out;
}
}
info->floorsubmap=_ogg_malloc(sizeof(*info->floorsubmap)*info->submaps);
info->residuesubmap=_ogg_malloc(sizeof(*info->residuesubmap)*info->submaps);
if(!info->floorsubmap || !info->residuesubmap)
goto err_out;
for(i=0;i<info->submaps;i++){
oggpack_adv(opb,8);
info->floorsubmap[i]=oggpack_read24(opb,8);
if(info->floorsubmap[i]>=ci->floors)
goto err_out;
info->residuesubmap[i]=oggpack_read24(opb,8);
if(info->residuesubmap[i]>=ci->residues)
goto err_out;
}
info->pcmbundle =_ogg_malloc(sizeof(*info->pcmbundle)*vi->channels);
info->nonzero =_ogg_malloc(sizeof(*info->nonzero)*vi->channels);
info->floormemo =_ogg_malloc(sizeof(*info->floormemo)*vi->channels);
if(!info->pcmbundle || !info->nonzero || !info->floormemo)
goto err_out;
return info;
err_out:
mapping0_free_info(info);
return(NULL);
}
JNIEXPORT void JNICALL Java_org_echocat_jogg_OggPackBufferJNI_adv
(JNIEnv *env, jclass thisClass, jlong handle, jint bits) {
oggpack_adv((oggpack_buffer*) handle, bits);
}
