/* decides between modes, dispatches to the appropriate mapping. */
int vorbis_analysis(vorbis_block *vb, ogg_packet *op){
int ret;
vb->glue_bits=0;
vb->time_bits=0;
vb->floor_bits=0;
vb->res_bits=0;
/* first things first. Make sure encode is ready */
oggpack_reset(&vb->opb);
/* we only have one mapping type (0), and we let the mapping code
itself figure out what soft mode to use. This allows easier
bitrate management */
if((ret=_mapping_P[0]->forward(vb)))
return(ret);
if(op){
if(vorbis_bitrate_managed(vb))
/* The app is using a bitmanaged mode... but not using the
bitrate management interface. */
return(OV_EINVAL);
op->packet=oggpack_get_buffer(&vb->opb);
op->bytes=oggpack_bytes(&vb->opb);
op->b_o_s=0;
op->e_o_s=vb->eofflag;
op->granulepos=vb->granulepos;
op->packetno=vb->sequence; /* for sake of completeness */
}
return(0);
}
static PyObject * py_ogg_oggpack_get_buffer(PyObject *self, PyObject *args) {
int size;
unsigned char * c_out;
oggpack_buffer * b;
PyArg_ParseTuple(args, "s#", &b, &size);
c_out = oggpack_get_buffer(b);
return Py_BuildValue("s#", c_out);
};
/* build the comment header packet from the passed metadata */
int theora_encode_comment(theora_comment *tc, ogg_packet *op)
{
const char *vendor = theora_version_string();
const int vendor_length = strlen(vendor);
oggpack_buffer *opb;
#ifndef LIBOGG2
opb = _ogg_malloc(sizeof(oggpack_buffer));
oggpackB_writeinit(opb);
#else
opb = _ogg_malloc(oggpack_buffersize());
oggpackB_writeinit(opb, ogg_buffer_create());
#endif
oggpackB_write(opb, 0x81, 8);
_tp_writebuffer(opb, "theora", 6);
_tp_writelsbint(opb, vendor_length);
_tp_writebuffer(opb, vendor, vendor_length);
_tp_writelsbint(opb, tc->comments);
if(tc->comments){
int i;
for(i=0;i<tc->comments;i++){
if(tc->user_comments[i]){
_tp_writelsbint(opb,tc->comment_lengths[i]);
_tp_writebuffer(opb,tc->user_comments[i],tc->comment_lengths[i]);
}else{
oggpackB_write(opb,0,32);
}
}
}
op->bytes=oggpack_bytes(opb);
#ifndef LIBOGG2
/* So we're expecting the application will free this? */
op->packet=_ogg_malloc(oggpack_bytes(opb));
memcpy(op->packet, oggpack_get_buffer(opb), oggpack_bytes(opb));
oggpack_writeclear(opb);
#else
op->packet = oggpack_writebuffer(opb);
/* When the application puts op->packet into a stream_state object,
it becomes the property of libogg2's internal memory management. */
#endif
_ogg_free(opb);
op->b_o_s=0;
op->e_o_s=0;
op->packetno=0;
op->granulepos=0;
return (0);
}
/* decides between modes, dispatches to the appropriate mapping. */
int vorbis_analysis(vorbis_block *vb,ogg_packet *op){
vorbis_dsp_state *vd=vb->vd;
backend_lookup_state *b=vd->backend_state;
vorbis_info *vi=vd->vi;
codec_setup_info *ci=vi->codec_setup;
int type,ret;
int mode=0;
vb->glue_bits=0;
vb->time_bits=0;
vb->floor_bits=0;
vb->res_bits=0;
/* first things first. Make sure encode is ready */
oggpack_reset(&vb->opb);
/* Encode the packet type */
oggpack_write(&vb->opb,0,1);
/* currently lazy. Short block dispatches to 0, long to 1. */
if(vb->W &&ci->modes>1)mode=1;
type=ci->map_type[ci->mode_param[mode]->mapping];
vb->mode=mode;
/* Encode frame mode, pre,post windowsize, then dispatch */
oggpack_write(&vb->opb,mode,b->modebits);
if(vb->W){
oggpack_write(&vb->opb,vb->lW,1);
oggpack_write(&vb->opb,vb->nW,1);
/*fprintf(stderr,"*");
}else{
fprintf(stderr,".");*/
}
if((ret=_mapping_P[type]->forward(vb,b->mode[mode])))
return(ret);
/* set up the packet wrapper */
op->packet=oggpack_get_buffer(&vb->opb);
op->bytes=oggpack_bytes(&vb->opb);
op->b_o_s=0;
op->e_o_s=vb->eofflag;
op->granulepos=vb->granulepos;
op->packetno=vb->sequence; /* for sake of completeness */
return(0);
}
/*
* Class: org_tritonus_lowlevel_ogg_Buffer
* Method: getBuffer
* Signature: ()[B
*/
JNIEXPORT jbyteArray JNICALL
Java_org_tritonus_lowlevel_ogg_Buffer_getBuffer
(JNIEnv* env, jobject obj)
{
oggpack_buffer* handle;
unsigned char* buffer;
jbyteArray abBuffer;
if (debug_flag) { fprintf(debug_file, "Java_org_tritonus_lowlevel_ogg_Buffer_getBuffer(): begin\n"); }
handle = getHandle(env, obj);
buffer = oggpack_get_buffer(handle);
abBuffer = (*env)->NewByteArray(env, handle->storage);
(*env)->SetByteArrayRegion(env, abBuffer, 0, handle->storage,
(jbyte*) buffer);
if (debug_flag) { fprintf(debug_file, "Java_org_tritonus_lowlevel_ogg_Buffer_getBuffer(): end\n"); }
return abBuffer;
}
/* build the comment header packet from the passed metadata */
int theora_encode_comment(theora_comment *tc, ogg_packet *op)
{
const char *vendor = theora_version_string();
const int vendor_length = strlen(vendor);
oggpack_buffer *opb;
opb = _ogg_malloc(sizeof(oggpack_buffer));
oggpackB_writeinit(opb);
oggpackB_write(opb, 0x81, 8);
_tp_writebuffer(opb, "theora", 6);
_tp_writelsbint(opb, vendor_length);
_tp_writebuffer(opb, vendor, vendor_length);
_tp_writelsbint(opb, tc->comments);
if(tc->comments){
int i;
for(i=0;i<tc->comments;i++){
if(tc->user_comments[i]){
_tp_writelsbint(opb,tc->comment_lengths[i]);
_tp_writebuffer(opb,tc->user_comments[i],tc->comment_lengths[i]);
}else{
oggpackB_write(opb,0,32);
}
}
}
op->bytes=oggpack_bytes(opb);
/* So we're expecting the application will free this? */
op->packet=_ogg_malloc(oggpack_bytes(opb));
memcpy(op->packet, oggpack_get_buffer(opb), oggpack_bytes(opb));
oggpack_writeclear(opb);
_ogg_free(opb);
op->b_o_s=0;
op->e_o_s=0;
op->packetno=0;
op->granulepos=0;
return (0);
}
