static vorbis_info_floor *floor0_unpack (vorbis_info *vi,oggpack_buffer *opb){
codec_setup_info *ci=vi->codec_setup;
int j;
vorbis_info_floor0 *info=_ogg_malloc(sizeof(*info));
info->order=oggpack_read(opb,8);
info->rate=oggpack_read(opb,16);
info->barkmap=oggpack_read(opb,16);
info->ampbits=oggpack_read(opb,6);
info->ampdB=oggpack_read(opb,8);
info->numbooks=oggpack_read(opb,4)+1;
if(info->order<1)goto err_out;
if(info->rate<1)goto err_out;
if(info->barkmap<1)goto err_out;
if(info->numbooks<1)goto err_out;
for(j=0;j<info->numbooks;j++){
info->books[j]=oggpack_read(opb,8);
if(info->books[j]<0 || info->books[j]>=ci->books)goto err_out;
if(ci->book_param[info->books[j]]->maptype==0)goto err_out;
if(ci->book_param[info->books[j]]->dim<1)goto err_out;
}
return(info);
err_out:
floor0_free_info(info);
return(NULL);
}
static PyObject * py_ogg_oggpack_read(PyObject *self, PyObject *args) {
int size;
long c_out;
oggpack_buffer * b;
int bits;
PyArg_ParseTuple(args, "s#i", &b, &size, &bits);
c_out = oggpack_read(b, bits);
return Py_BuildValue("l", c_out);
};
/* used to track pcm position without actually performing decode.
Useful for sequential 'fast forward' */
int vorbis_synthesis_trackonly(vorbis_block *vb,ogg_packet *op){
vorbis_dsp_state *vd=vb->vd;
private_state *b=vd->backend_state;
vorbis_info *vi=vd->vi;
codec_setup_info *ci=vi->codec_setup;
oggpack_buffer *opb=&vb->opb;
int mode;
/* first things first. Make sure decode is ready */
_vorbis_block_ripcord(vb);
oggpack_readinit(opb,op->packet,op->bytes);
/* Check the packet type */
if(oggpack_read(opb,1)!=0){
/* Oops. This is not an audio data packet */
return(OV_ENOTAUDIO);
}
/* read our mode and pre/post windowsize */
mode=oggpack_read(opb,b->modebits);
if(mode==-1)return(OV_EBADPACKET);
vb->mode=mode;
vb->W=ci->mode_param[mode]->blockflag;
if(vb->W){
vb->lW=oggpack_read(opb,1);
vb->nW=oggpack_read(opb,1);
if(vb->nW==-1) return(OV_EBADPACKET);
}else{
vb->lW=0;
vb->nW=0;
}
/* more setup */
vb->granulepos=op->granulepos;
vb->sequence=op->packetno;
vb->eofflag=op->e_o_s;
/* no pcm */
vb->pcmend=0;
vb->pcm=NULL;
return(0);
}
static vorbis_info_floor *floor1_unpack (vorbis_info *vi,oggpack_buffer *opb){
codec_setup_info *ci=vi->codec_setup;
int j,k,count=0,maxclass=-1,rangebits;
vorbis_info_floor1 *info=_ogg_calloc(1,sizeof(*info));
/* read partitions */
info->partitions=oggpack_read(opb,5); /* only 0 to 31 legal */
for(j=0;j<info->partitions;j++){
info->partitionclass[j]=oggpack_read(opb,4); /* only 0 to 15 legal */
if(maxclass<info->partitionclass[j])maxclass=info->partitionclass[j];
}
/* read partition classes */
for(j=0;j<maxclass+1;j++){
info->class_dim[j]=oggpack_read(opb,3)+1; /* 1 to 8 */
info->class_subs[j]=oggpack_read(opb,2); /* 0,1,2,3 bits */
if(info->class_subs[j]<0)
goto err_out;
if(info->class_subs[j])info->class_book[j]=oggpack_read(opb,8);
if(info->class_book[j]<0 || info->class_book[j]>=ci->books)
goto err_out;
for(k=0;k<(1<<info->class_subs[j]);k++){
info->class_subbook[j][k]=oggpack_read(opb,8)-1;
if(info->class_subbook[j][k]<-1 || info->class_subbook[j][k]>=ci->books)
goto err_out;
}
}
/* read the post list */
info->mult=oggpack_read(opb,2)+1; /* only 1,2,3,4 legal now */
rangebits=oggpack_read(opb,4);
for(j=0,k=0;j<info->partitions;j++){
count+=info->class_dim[info->partitionclass[j]];
for(;k<count;k++){
int t=info->postlist[k+2]=oggpack_read(opb,rangebits);
if(t<0 || t>=(1<<rangebits))
goto err_out;
}
}
info->postlist[0]=0;
info->postlist[1]=1<<rangebits;
return(info);
err_out:
floor1_free_info(info);
return(NULL);
}
static int
_tarkin_unpack_comment (TarkinComment * vc, oggpack_buffer * opb)
{
int i;
int vendorlen = oggpack_read (opb, 32);
#ifdef DBG_OGG
printf ("dbg_ogg: Decoding comment: ");
#endif
if (vendorlen < 0)
goto err_out;
vc->vendor = _ogg_calloc (vendorlen + 1, 1);
_v_readstring (opb, vc->vendor, vendorlen);
vc->comments = oggpack_read (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_read (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_read (opb, 1) != 1)
goto err_out; /* EOP check */
#ifdef DBG_OGG
printf ("Success, read %d comments\n", vc->comments);
#endif
return (0);
err_out:
#ifdef DBG_OGG
printf ("Failed\n");
#endif
tarkin_comment_clear (vc);
return (-TARKIN_BAD_HEADER);
}
int vorbis_synthesis_headerin(vorbis_info *vi,vorbis_comment *vc,ogg_packet *op){
oggpack_buffer opb;
if(op){
oggpack_readinit(&opb,op->packet);
/* Which of the three types of header is this? */
/* Also verify header-ness, vorbis */
{
char buffer[6];
int packtype=oggpack_read(&opb,8);
memset(buffer,0,6);
_v_readstring(&opb,buffer,6);
if(memcmp(buffer,"vorbis",6)){
/* not a vorbis header */
return(OV_ENOTVORBIS);
}
switch(packtype){
case 0x01: /* least significant *bit* is read first */
if(!op->b_o_s){
/* Not the initial packet */
return(OV_EBADHEADER);
}
if(vi->rate!=0){
/* previously initialized info header */
return(OV_EBADHEADER);
}
return(_vorbis_unpack_info(vi,&opb));
case 0x03: /* least significant *bit* is read first */
if(vi->rate==0){
/* um... we didn't get the initial header */
return(OV_EBADHEADER);
}
return(_vorbis_unpack_comment(vc,&opb));
case 0x05: /* least significant *bit* is read first */
if(vi->rate==0 || vc->vendor==NULL){
/* um... we didn;t get the initial header or comments yet */
return(OV_EBADHEADER);
}
return(_vorbis_unpack_books(vi,&opb));
default:
/* Not a valid vorbis header type */
return(OV_EBADHEADER);
break;
}
}
}
return(OV_EBADHEADER);
}
TarkinError tarkin_synthesis_headerin(TarkinInfo *vi,TarkinComment *vc,ogg_packet *op){
oggpack_buffer opb;
if(op){
oggpack_readinit(&opb,op->packet,op->bytes);
/* Which of the three types of header is this? */
/* Also verify header-ness, tarkin */
{
char buffer[6];
int packtype=oggpack_read(&opb,8);
memset(buffer,0,6);
_v_readstring(&opb,buffer,6);
if(memcmp(buffer,"tarkin",6)){
/* not a tarkin header */
return(-TARKIN_NOT_TARKIN);
}
switch(packtype){
case 0x01: /* least significant *bit* is read first */
if(!op->b_o_s){
/* Not the initial packet */
return(-TARKIN_BAD_HEADER);
}
if(vi->inter.numerator!=0){
/* previously initialized info header */
return(-TARKIN_BAD_HEADER);
}
return(_tarkin_unpack_info(vi,&opb));
case 0x03: /* least significant *bit* is read first */
if(vi->inter.denominator==0){
/* um... we didn't get the initial header */
return(-TARKIN_BAD_HEADER);
}
return(_tarkin_unpack_comment(vc,&opb));
case 0x05: /* least significant *bit* is read first */
if(vi->inter.numerator == 0 || vc->vendor==NULL){
/* um... we didn;t get the initial header or comments yet */
return(-TARKIN_BAD_HEADER);
}
return(_tarkin_unpack_layer_desc(vi,&opb));
default:
/* Not a valid tarkin header type */
return(-TARKIN_BAD_HEADER);
break;
}
}
}
return(-TARKIN_BAD_HEADER);
}
/*
* Class: org_tritonus_lowlevel_ogg_Buffer
* Method: read
* Signature: (I)I
*/
JNIEXPORT jint JNICALL
Java_org_tritonus_lowlevel_ogg_Buffer_read
(JNIEnv* env, jobject obj, jint nBits)
{
oggpack_buffer* handle;
int nReturn;
if (debug_flag) { fprintf(debug_file, "Java_org_tritonus_lowlevel_ogg_Buffer_read(): begin\n"); }
handle = getHandle(env, obj);
nReturn = oggpack_read(handle, nBits);
if (debug_flag) { fprintf(debug_file, "Java_org_tritonus_lowlevel_ogg_Buffer_read(): end\n"); }
return nReturn;
}
static void *floor0_inverse1(vorbis_block *vb,vorbis_look_floor *i)
{
vorbis_look_floor0 *look=(vorbis_look_floor0 *)i;
vorbis_info_floor0 *info=look->vi;
int j,k;
int ampraw=oggpack_read(&vb->opb,info->ampbits);
if(ampraw>0) /* also handles the -1 out of data case */
{
long maxval=(1<<info->ampbits)-1;
float amp=(float)ampraw/maxval*info->ampdB;
int booknum=oggpack_read(&vb->opb,_ilog(info->numbooks));
if(booknum!=-1 && booknum<info->numbooks) /* be paranoid */
{
codec_setup_info *ci=vb->vd->vi->codec_setup;
codebook *b=ci->fullbooks+info->books[booknum];
float last=0.f;
/* the additional b->dim is a guard against any possible stack
smash; b->dim is provably more than we can overflow the
vector */
float *lsp=_vorbis_block_alloc(vb,sizeof(*lsp)*(look->m+b->dim+1));
for(j=0; j<look->m; j+=b->dim)
if(vorbis_book_decodev_set(b,lsp+j,&vb->opb,b->dim)==-1)goto eop;
for(j=0; j<look->m;)
{
for(k=0; k<b->dim; k++,j++)lsp[j]+=last;
last=lsp[j-1];
}
lsp[look->m]=amp;
return(lsp);
}
}
eop:
return(NULL);
}
long vorbis_packet_blocksize(vorbis_info *vi,ogg_packet *op){
codec_setup_info *ci=vi->codec_setup;
oggpack_buffer opb;
int mode;
if(ci==NULL || ci->modes<=0){
/* codec setup not properly intialized */
return(OV_EFAULT);
}
oggpack_readinit(&opb,op->packet,op->bytes);
/* Check the packet type */
if(oggpack_read(&opb,1)!=0){
/* Oops. This is not an audio data packet */
return(OV_ENOTAUDIO);
}
/* read our mode and pre/post windowsize */
mode=oggpack_read(&opb,ov_ilog(ci->modes-1));
if(mode==-1 || !ci->mode_param[mode])return(OV_EBADPACKET);
return(ci->blocksizes[ci->mode_param[mode]->blockflag]);
}
/* vorbis_info is for range checking */
int res_unpack(vorbis_info_residue *info,
vorbis_info *vi,oggpack_buffer *opb){
int j,k;
codec_setup_info *ci=(codec_setup_info *)vi->codec_setup;
memset(info,0,sizeof(*info));
info->type=oggpack_read(opb,16);
if(info->type>2 || info->type<0)goto errout;
info->begin=oggpack_read(opb,24);
info->end=oggpack_read(opb,24);
info->grouping=oggpack_read(opb,24)+1;
info->partitions=oggpack_read(opb,6)+1;
info->groupbook=oggpack_read(opb,8);
if(info->groupbook>=ci->books)goto errout;
info->stagemasks=_ogg_malloc(info->partitions*sizeof(*info->stagemasks));
info->stagebooks=_ogg_malloc(info->partitions*8*sizeof(*info->stagebooks));
for(j=0;j<info->partitions;j++){
int cascade=oggpack_read(opb,3);
if(oggpack_read(opb,1))
cascade|=(oggpack_read(opb,5)<<3);
info->stagemasks[j]=cascade;
}
for(j=0;j<info->partitions;j++){
for(k=0;k<8;k++){
if((info->stagemasks[j]>>k)&1){
unsigned char book=oggpack_read(opb,8);
if(book>=ci->books)goto errout;
info->stagebooks[j*8+k]=book;
if(k+1>info->stages)info->stages=k+1;
}else
info->stagebooks[j*8+k]=0xff;
}
}
static int _vorbis_unpack_comment(vorbis_comment *vc,oggpack_buffer *opb){
int vendorlen;
vendorlen=oggpack_read(opb,32);
if(vendorlen<0)goto err_out;
if(vendorlen>opb->storage-oggpack_bytes(opb))goto err_out;
vc->vendor=(char *)_ogg_calloc(vendorlen+1,1);
if(vc->vendor==NULL)goto err_out;
_v_readstring(opb,vc->vendor,vendorlen);
vc->comments=0;
/* ROCKBOX: the meat of this function was deleted as we don't need it */
return(0);
err_out:
vorbis_comment_clear(vc);
return(OV_EBADHEADER);
}
static int
_tarkin_unpack_info (TarkinInfo * vi, oggpack_buffer * opb)
{
#ifdef DBG_OGG
printf ("dbg_ogg: Decoding Info: ");
#endif
vi->version = oggpack_read (opb, 32);
if (vi->version != 0)
return (-TARKIN_VERSION);
vi->n_layers = oggpack_read (opb, 8);
vi->inter.numerator = oggpack_read (opb, 32);
vi->inter.denominator = oggpack_read (opb, 32);
vi->bitrate_upper = oggpack_read (opb, 32);
vi->bitrate_nominal = oggpack_read (opb, 32);
vi->bitrate_lower = oggpack_read (opb, 32);
#ifdef DBG_OGG
printf (" n_layers %d, interleave: %d/%d, ",
vi->n_layers, vi->inter.numerator, vi->inter.denominator);
#endif
if (vi->inter.numerator < 1)
goto err_out;
if (vi->inter.denominator < 1)
goto err_out;
if (vi->n_layers < 1)
goto err_out;
if (oggpack_read (opb, 1) != 1)
goto err_out; /* EOP check */
#ifdef DBG_OGG
printf ("Success\n");
#endif
return (0);
err_out:
#ifdef DBG_OGG
printf ("Failed\n");
#endif
tarkin_info_clear (vi);
return (-TARKIN_BAD_HEADER);
}
static int _vorbis_unpack_info(vorbis_info *vi,oggpack_buffer *opb){
codec_setup_info *ci=(codec_setup_info *)vi->codec_setup;
if(!ci)return(OV_EFAULT);
vi->version=oggpack_read(opb,32);
if(vi->version!=0)return(OV_EVERSION);
vi->channels=oggpack_read(opb,8);
vi->rate=oggpack_read(opb,32);
vi->bitrate_upper=oggpack_read(opb,32);
vi->bitrate_nominal=oggpack_read(opb,32);
vi->bitrate_lower=oggpack_read(opb,32);
ci->blocksizes[0]=1<<oggpack_read(opb,4);
ci->blocksizes[1]=1<<oggpack_read(opb,4);
#ifdef LIMIT_TO_64kHz
if(vi->rate>=64000 || ci->blocksizes[1]>4096)goto err_out;
#else
if(vi->rate<64000 && ci->blocksizes[1]>4096)goto err_out;
#endif
if(vi->rate<1)goto err_out;
if(vi->channels<1)goto err_out;
if(ci->blocksizes[0]<64)goto err_out;
if(ci->blocksizes[1]<ci->blocksizes[0])goto err_out;
if(ci->blocksizes[1]>8192)goto err_out;
if(oggpack_read(opb,1)!=1)goto err_out; /* EOP check */
return(0);
err_out:
vorbis_info_clear(vi);
return(OV_EBADHEADER);
}
static ogg_uint32_t decpack(long entry,long used_entry,long quantvals,
codebook *b,oggpack_buffer *opb,int maptype){
ogg_uint32_t ret=0;
int j;
switch(b->dec_type){
case 0:
return (ogg_uint32_t)entry;
case 1:
if(maptype==1){
/* vals are already read into temporary column vector here */
for(j=0;j<b->dim;j++){
ogg_uint32_t off=entry%quantvals;
entry/=quantvals;
ret|=((ogg_uint16_t *)(b->q_val))[off]<<(b->q_bits*j);
}
}else{
for(j=0;j<b->dim;j++)
ret|=oggpack_read(opb,b->q_bits)<<(b->q_bits*j);
}
return ret;
case 2:
for(j=0;j<b->dim;j++){
ogg_uint32_t off=entry%quantvals;
entry/=quantvals;
ret|=off<<(b->q_pack*j);
}
return ret;
case 3:
return (ogg_uint32_t)used_entry;
}
return 0; /* silence compiler */
}
/* Is this packet a vorbis ID header? */
int vorbis_synthesis_idheader(ogg_packet *op){
oggpack_buffer opb;
char buffer[6];
if(op){
oggpack_readinit(&opb,op->packet,op->bytes);
if(!op->b_o_s)
return(0); /* Not the initial packet */
if(oggpack_read(&opb,8) != 1)
return 0; /* not an ID header */
memset(buffer,0,6);
_v_readstring(&opb,buffer,6);
if(memcmp(buffer,"vorbis",6))
return 0; /* not vorbis */
return 1;
}
return 0;
}
/* all of the real encoding details are here. The modes, books,
everything */
static int _vorbis_unpack_books(vorbis_info *vi,oggpack_buffer *opb){
codec_setup_info *ci=(codec_setup_info *)vi->codec_setup;
int i;
if(!ci)return(OV_EFAULT);
/* codebooks */
ci->books=oggpack_read(opb,8)+1;
/*ci->book_param=_ogg_calloc(ci->books,sizeof(*ci->book_param));*/
for(i=0;i<ci->books;i++){
ci->book_param[i]=(static_codebook *)_ogg_calloc(1,sizeof(*ci->book_param[i]));
if(vorbis_staticbook_unpack(opb,ci->book_param[i]))goto err_out;
}
/* time backend settings */
ci->times=oggpack_read(opb,6)+1;
/*ci->time_type=_ogg_malloc(ci->times*sizeof(*ci->time_type));*/
/*ci->time_param=_ogg_calloc(ci->times,sizeof(void *));*/
for(i=0;i<ci->times;i++){
ci->time_type[i]=oggpack_read(opb,16);
if(ci->time_type[i]<0 || ci->time_type[i]>=VI_TIMEB)goto err_out;
/* ci->time_param[i]=_time_P[ci->time_type[i]]->unpack(vi,opb);
Vorbis I has no time backend */
/*if(!ci->time_param[i])goto err_out;*/
}
/* floor backend settings */
ci->floors=oggpack_read(opb,6)+1;
/*ci->floor_type=_ogg_malloc(ci->floors*sizeof(*ci->floor_type));*/
/*ci->floor_param=_ogg_calloc(ci->floors,sizeof(void *));*/
for(i=0;i<ci->floors;i++){
ci->floor_type[i]=oggpack_read(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;
}
/* residue backend settings */
ci->residues=oggpack_read(opb,6)+1;
/*ci->residue_type=_ogg_malloc(ci->residues*sizeof(*ci->residue_type));*/
/*ci->residue_param=_ogg_calloc(ci->residues,sizeof(void *));*/
for(i=0;i<ci->residues;i++){
ci->residue_type[i]=oggpack_read(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;
}
/* map backend settings */
ci->maps=oggpack_read(opb,6)+1;
/*ci->map_type=_ogg_malloc(ci->maps*sizeof(*ci->map_type));*/
/*ci->map_param=_ogg_calloc(ci->maps,sizeof(void *));*/
for(i=0;i<ci->maps;i++){
ci->map_type[i]=oggpack_read(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;
}
/* mode settings */
ci->modes=oggpack_read(opb,6)+1;
/*vi->mode_param=_ogg_calloc(vi->modes,sizeof(void *));*/
for(i=0;i<ci->modes;i++){
ci->mode_param[i]=(vorbis_info_mode *)_ogg_calloc(1,sizeof(*ci->mode_param[i]));
ci->mode_param[i]->blockflag=oggpack_read(opb,1);
ci->mode_param[i]->windowtype=oggpack_read(opb,16);
ci->mode_param[i]->transformtype=oggpack_read(opb,16);
ci->mode_param[i]->mapping=oggpack_read(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_read(opb,1)!=1)goto err_out; /* top level EOP check */
return(0);
err_out:
vorbis_info_clear(vi);
return(OV_EBADHEADER);
}
static void BURGERCALL _v_readstring(oggpack_buffer *o,char *buf,int bytes)
{
while(bytes--){
*buf++=(char)oggpack_read(o,8);
}
}
status_t
OggVorbisSeekable::GetStreamInfo(int64 *frameCount, bigtime_t *duration,
media_format *format)
{
TRACE("OggVorbisSeekable::GetStreamInfo\n");
status_t result = B_OK;
ogg_packet packet;
// get header packet
if (GetHeaderPackets().size() < 1) {
result = GetPacket(&packet);
if (result != B_OK) {
return result;
}
SaveHeaderPacket(packet);
}
packet = GetHeaderPackets()[0];
if (!packet.b_o_s) {
return B_ERROR; // first packet was not beginning of stream
}
// parse header packet
// based on libvorbis/info.c vorbis_synthesis_headerin(...)
oggpack_buffer opb;
oggpack_readinit(&opb, packet.packet, packet.bytes);
int packtype = oggpack_read(&opb, 8);
if (packtype != 0x01) {
return B_ERROR; // first packet was not an info packet
}
// discard vorbis string
for (uint i = 0 ; i < sizeof("vorbis") - 1 ; i++) {
oggpack_read(&opb, 8);
}
vorbis_info info;
if (_vorbis_unpack_info(&info, &opb) != 0) {
return B_ERROR; // couldn't unpack info
}
// get the format for the description
media_format_description description = vorbis_description();
BMediaFormats formats;
result = formats.InitCheck();
if (result == B_OK) {
result = formats.GetFormatFor(description, format);
}
if (result != B_OK) {
*format = vorbis_encoded_media_format();
// ignore error, allow user to use ReadChunk interface
}
// fill out format from header packet
if (info.bitrate_nominal > 0) {
format->u.encoded_audio.bit_rate = info.bitrate_nominal;
} else if (info.bitrate_upper > 0) {
format->u.encoded_audio.bit_rate = info.bitrate_upper;
} else if (info.bitrate_lower > 0) {
format->u.encoded_audio.bit_rate = info.bitrate_lower;
}
if (info.channels == 1) {
format->u.encoded_audio.multi_info.channel_mask = B_CHANNEL_LEFT;
} else {
format->u.encoded_audio.multi_info.channel_mask = B_CHANNEL_LEFT | B_CHANNEL_RIGHT;
}
fFrameRate = format->u.encoded_audio.output.frame_rate = (float)info.rate;
format->u.encoded_audio.output.channel_count = info.channels;
format->u.encoded_audio.output.buffer_size
= AudioBufferSize(&format->u.encoded_audio.output);
// get comment packet
if (GetHeaderPackets().size() < 2) {
result = GetPacket(&packet);
if (result != B_OK) {
return result;
}
SaveHeaderPacket(packet);
}
// get codebook packet
if (GetHeaderPackets().size() < 3) {
result = GetPacket(&packet);
if (result != B_OK) {
return result;
}
SaveHeaderPacket(packet);
}
format->SetMetaData((void*)&GetHeaderPackets(),sizeof(GetHeaderPackets()));
// TODO: count the frames in the first page.. somehow.. :-/
int64 frames = 0;
ogg_page page;
// read the first page
result = ReadPage(&page);
if (result != B_OK) {
return result;
}
int64 fFirstGranulepos = ogg_page_granulepos(&page);
TRACE("OggVorbisSeekable::GetStreamInfo: first granulepos: %lld\n", fFirstGranulepos);
// read our last page
off_t last = inherited::Seek(GetLastPagePosition(), SEEK_SET);
if (last < 0) {
return last;
}
result = ReadPage(&page);
if (result != B_OK) {
return result;
}
int64 last_granulepos = ogg_page_granulepos(&page);
// seek back to the start
int64 frame = 0;
bigtime_t time = 0;
result = Seek(B_MEDIA_SEEK_TO_TIME, &frame, &time);
if (result != B_OK) {
return result;
}
// compute frame count and duration from sample count
frames = last_granulepos - fFirstGranulepos;
*frameCount = frames;
*duration = (1000000LL * frames) / (long long)fFrameRate;
return B_OK;
}
status_t MyVorbisExtractor::verifyHeader(
MediaBuffer *buffer, uint8_t type) {
const uint8_t *data =
(const uint8_t *)buffer->data() + buffer->range_offset();
size_t size = buffer->range_length();
if (size < 7 || data[0] != type || memcmp(&data[1], "vorbis", 6)) {
return ERROR_MALFORMED;
}
ogg_buffer buf;
buf.data = (uint8_t *)data;
buf.size = size;
buf.refcount = 1;
buf.ptr.owner = NULL;
ogg_reference ref;
ref.buffer = &buf;
ref.begin = 0;
ref.length = size;
ref.next = NULL;
oggpack_buffer bits;
oggpack_readinit(&bits, &ref);
CHECK_EQ(oggpack_read(&bits, 8), type);
for (size_t i = 0; i < 6; ++i) {
oggpack_read(&bits, 8); // skip 'vorbis'
}
switch (type) {
case 1:
{
CHECK_EQ(0, _vorbis_unpack_info(&mVi, &bits));
mMeta->setData(kKeyVorbisInfo, 0, data, size);
mMeta->setInt32(kKeySampleRate, mVi.rate);
mMeta->setInt32(kKeyChannelCount, mVi.channels);
LOGV("lower-bitrate = %ld", mVi.bitrate_lower);
LOGV("upper-bitrate = %ld", mVi.bitrate_upper);
LOGV("nominal-bitrate = %ld", mVi.bitrate_nominal);
LOGV("window-bitrate = %ld", mVi.bitrate_window);
off64_t size;
if (mSource->getSize(&size) == OK) {
uint64_t bps = approxBitrate();
if(0 != bps && bps < 10000000)
{
mMeta->setInt64(kKeyDuration, size * 8000000ll / bps);
} else
{
uint64_t lastGranule, tDuration;
lastGranule= findLastGranule();
tDuration = lastGranule*1000000/mVi.rate;
mMeta->setInt64(kKeyDuration, tDuration);
bps = size * 8000000ll / tDuration;
mMeta->setInt64(kKeyBitRate, size * 8000000ll / tDuration);
mVi.bitrate_nominal = bps;
}
}
break;
}
case 3:
{
if (0 != _vorbis_unpack_comment(&mVc, &bits)) {
return ERROR_MALFORMED;
}
parseFileMetaData();
break;
}
case 5:
{
if (0 != _vorbis_unpack_books(&mVi, &bits)) {
return ERROR_MALFORMED;
}
mMeta->setData(kKeyVorbisBooks, 0, data, size);
break;
}
}
return OK;
}
static inline int _vorbis_synthesis1(vorbis_block *vb,ogg_packet *op,int decodep){
vorbis_dsp_state *vd= vb ? vb->vd : 0;
private_state *b= vd ? (private_state *)vd->backend_state: 0;
vorbis_info *vi= vd ? vd->vi : 0;
codec_setup_info *ci= vi ? (codec_setup_info *)vi->codec_setup : 0;
oggpack_buffer *opb=vb ? &vb->opb : 0;
int type,mode,i;
if (!vd || !b || !vi || !ci || !opb) {
return OV_EBADPACKET;
}
/* first things first. Make sure decode is ready */
_vorbis_block_ripcord(vb);
oggpack_readinit(opb,op->packet,op->bytes);
/* Check the packet type */
if(oggpack_read(opb,1)!=0){
/* Oops. This is not an audio data packet */
return(OV_ENOTAUDIO);
}
/* read our mode and pre/post windowsize */
mode=oggpack_read(opb,b->modebits);
if(mode==-1)return(OV_EBADPACKET);
vb->mode=mode;
if(!ci->mode_param[mode]){
return(OV_EBADPACKET);
}
vb->W=ci->mode_param[mode]->blockflag;
if(vb->W){
vb->lW=oggpack_read(opb,1);
vb->nW=oggpack_read(opb,1);
if(vb->nW==-1) return(OV_EBADPACKET);
}else{
vb->lW=0;
vb->nW=0;
}
/* more setup */
vb->granulepos=op->granulepos;
vb->sequence=op->packetno-3; /* first block is third packet */
vb->eofflag=op->e_o_s;
if(decodep && vi->channels<=CHANNELS)
{
vb->pcm = ipcm_vect;
/* set pcm end point */
vb->pcmend=ci->blocksizes[vb->W];
/* use statically allocated buffer */
if(vd->reset_pcmb || vb->pcm[0]==NULL)
{
/* one-time initialisation at codec start
NOT for every block synthesis start
allows us to flip between buffers once initialised
by simply flipping pointers */
for(i=0; i<vi->channels; i++)
vb->pcm[i] = &vd->first_pcm[i*ci->blocksizes[1]];
}
vd->reset_pcmb = false;
/* unpack_header enforces range checking */
type=ci->map_type[ci->mode_param[mode]->mapping];
return(_mapping_P[type]->inverse(vb,b->mode[mode]));
}else{
/* no pcm */
vb->pcmend=0;
vb->pcm=NULL;
return(0);
}
}
/* all of the real encoding details are here. The modes, books,
everything */
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);
/* codebooks */
ci->books=oggpack_read(opb,8)+1;
if(ci->books<=0)goto err_out;
for(i=0;i<ci->books;i++){
ci->book_param[i]=vorbis_staticbook_unpack(opb);
if(!ci->book_param[i])goto err_out;
}
/* time backend settings; hooks are unused */
{
int times=oggpack_read(opb,6)+1;
if(times<=0)goto err_out;
for(i=0;i<times;i++){
int test=oggpack_read(opb,16);
if(test<0 || test>=VI_TIMEB)goto err_out;
}
}
/* floor backend settings */
ci->floors=oggpack_read(opb,6)+1;
if(ci->floors<=0)goto err_out;
for(i=0;i<ci->floors;i++){
ci->floor_type[i]=oggpack_read(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;
}
/* residue backend settings */
ci->residues=oggpack_read(opb,6)+1;
if(ci->residues<=0)goto err_out;
for(i=0;i<ci->residues;i++){
ci->residue_type[i]=oggpack_read(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;
}
/* map backend settings */
ci->maps=oggpack_read(opb,6)+1;
if(ci->maps<=0)goto err_out;
for(i=0;i<ci->maps;i++){
ci->map_type[i]=oggpack_read(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;
}
/* mode settings */
ci->modes=oggpack_read(opb,6)+1;
if(ci->modes<=0)goto err_out;
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_read(opb,1);
ci->mode_param[i]->windowtype=oggpack_read(opb,16);
ci->mode_param[i]->transformtype=oggpack_read(opb,16);
ci->mode_param[i]->mapping=oggpack_read(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(ci->mode_param[i]->mapping<0)goto err_out;
}
if(oggpack_read(opb,1)!=1)goto err_out; /* top level EOP check */
return(0);
err_out:
vorbis_info_clear(vi);
return(OV_EBADHEADER);
}
/* also responsible for range checking */
int mapping_info_unpack(vorbis_info_mapping *info,vorbis_info *vi,
oggpack_buffer *opb){
int i;
codec_setup_info *ci=(codec_setup_info *)vi->codec_setup;
memset(info,0,sizeof(*info));
if(oggpack_read(opb,1))
info->submaps=oggpack_read(opb,4)+1;
else
info->submaps=1;
if(oggpack_read(opb,1)){
info->coupling_steps=oggpack_read(opb,8)+1;
info->coupling=
_ogg_malloc(info->coupling_steps*sizeof(*info->coupling));
for(i=0;i<info->coupling_steps;i++){
int testM=info->coupling[i].mag=oggpack_read(opb,ilog(vi->channels));
int testA=info->coupling[i].ang=oggpack_read(opb,ilog(vi->channels));
if(testM<0 ||
testA<0 ||
testM==testA ||
testM>=vi->channels ||
testA>=vi->channels) goto err_out;
}
}
if(oggpack_read(opb,2)>0)goto err_out; /* 2,3:reserved */
if(info->submaps>1){
info->chmuxlist=_ogg_malloc(sizeof(*info->chmuxlist)*vi->channels);
for(i=0;i<vi->channels;i++){
info->chmuxlist[i]=oggpack_read(opb,4);
if(info->chmuxlist[i]>=info->submaps)goto err_out;
}
}
info->submaplist=_ogg_malloc(sizeof(*info->submaplist)*info->submaps);
for(i=0;i<info->submaps;i++){
int temp=oggpack_read(opb,8);
info->submaplist[i].floor=oggpack_read(opb,8);
if(info->submaplist[i].floor>=ci->floors)goto err_out;
info->submaplist[i].residue=oggpack_read(opb,8);
if(info->submaplist[i].residue>=ci->residues)goto err_out;
}
return 0;
err_out:
mapping_clear_info(info);
return -1;
}
/* unpacks a codebook from the packet buffer into the codebook struct,
readies the codebook auxiliary structures for decode *************/
int vorbis_staticbook_unpack(oggpack_buffer *opb,static_codebook *s){
long i,j;
memset(s,0,sizeof(*s));
/* make sure alignment is correct */
if(oggpack_read(opb,24)!=0x564342)goto _eofout;
/* first the basic parameters */
s->dim=oggpack_read(opb,16);
s->entries=oggpack_read(opb,24);
if(s->entries==-1)goto _eofout;
/* codeword ordering.... length ordered or unordered? */
switch((int)oggpack_read(opb,1)){
case 0:
/* unordered */
s->lengthlist=(long *)_ogg_malloc(sizeof(*s->lengthlist)*s->entries);
/* allocated but unused entries? */
if(oggpack_read(opb,1)){
/* yes, unused entries */
for(i=0;i<s->entries;i++){
if(oggpack_read(opb,1)){
long num=oggpack_read(opb,5);
if(num==-1)goto _eofout;
s->lengthlist[i]=num+1;
}else
s->lengthlist[i]=0;
}
}else{
/* all entries used; no tagging */
for(i=0;i<s->entries;i++){
long num=oggpack_read(opb,5);
if(num==-1)goto _eofout;
s->lengthlist[i]=num+1;
}
}
break;
case 1:
/* ordered */
{
long length=oggpack_read(opb,5)+1;
s->lengthlist=(long *)_ogg_malloc(sizeof(*s->lengthlist)*s->entries);
for(i=0;i<s->entries;){
long num=oggpack_read(opb,_ilog(s->entries-i));
if(num==-1)goto _eofout;
for(j=0;j<num && i<s->entries;j++,i++)
s->lengthlist[i]=length;
length++;
}
}
break;
default:
/* EOF */
return(-1);
}
/* Do we have a mapping to unpack? */
switch((s->maptype=oggpack_read(opb,4))){
case 0:
/* no mapping */
break;
case 1: case 2:
/* implicitly populated value mapping */
/* explicitly populated value mapping */
s->q_min=oggpack_read(opb,32);
s->q_delta=oggpack_read(opb,32);
s->q_quant=oggpack_read(opb,4)+1;
s->q_sequencep=oggpack_read(opb,1);
{
int quantvals=0;
switch(s->maptype){
case 1:
quantvals=_book_maptype1_quantvals(s);
break;
case 2:
quantvals=s->entries*s->dim;
break;
}
/* quantized values */
s->quantlist=(long *)_ogg_malloc(sizeof(*s->quantlist)*quantvals);
for(i=0;i<quantvals;i++)
s->quantlist[i]=oggpack_read(opb,s->q_quant);
if(quantvals&&s->quantlist[quantvals-1]==-1)goto _eofout;
}
break;
default:
goto _errout;
}
/* all set */
return(0);
_errout:
_eofout:
vorbis_staticbook_clear(s);
return(-1);
}
/* also responsible for range checking */
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;
memset(info,0,sizeof(*info));
if(oggpack_read(opb,1))
info->submaps=oggpack_read(opb,4)+1;
else
info->submaps=1;
if(oggpack_read(opb,1)){
info->coupling_steps=oggpack_read(opb,8)+1;
for(i=0;i<info->coupling_steps;i++){
int testM=info->coupling_mag[i]=oggpack_read(opb,ilog(vi->channels));
int testA=info->coupling_ang[i]=oggpack_read(opb,ilog(vi->channels));
if(testM<0 ||
testA<0 ||
testM==testA ||
testM>=vi->channels ||
testA>=vi->channels) goto err_out;
}
}
if(oggpack_read(opb,2)>0)goto err_out; /* 2,3:reserved */
if(info->submaps>1){
for(i=0;i<vi->channels;i++){
info->chmuxlist[i]=oggpack_read(opb,4);
if(info->chmuxlist[i]>=info->submaps)goto err_out;
}
}
for(i=0;i<info->submaps;i++){
oggpack_read(opb,8); /* time submap unused */
info->floorsubmap[i]=oggpack_read(opb,8);
if(info->floorsubmap[i]>=ci->floors)goto err_out;
info->residuesubmap[i]=oggpack_read(opb,8);
if(info->residuesubmap[i]>=ci->residues)goto err_out;
}
return info;
err_out:
mapping0_free_info(info);
return(NULL);
}
static void *floor1_inverse1(vorbis_block *vb,vorbis_look_floor *in){
vorbis_look_floor1 *look=(vorbis_look_floor1 *)in;
vorbis_info_floor1 *info=look->vi;
codec_setup_info *ci=(codec_setup_info *)vb->vd->vi->codec_setup;
int i,j,k;
codebook *books=ci->fullbooks;
/* unpack wrapped/predicted values from stream */
if(oggpack_read(&vb->opb,1)==1){
int *fit_value=(int *)_vorbis_block_alloc(vb,(look->posts)*sizeof(*fit_value));
fit_value[0]=oggpack_read(&vb->opb,ilog(look->quant_q-1));
fit_value[1]=oggpack_read(&vb->opb,ilog(look->quant_q-1));
/* partition by partition */
/* partition by partition */
for(i=0,j=2;i<info->partitions;i++){
int classv=info->partitionclass[i];
int cdim=info->class_dim[classv];
int csubbits=info->class_subs[classv];
int csub=1<<csubbits;
int cval=0;
/* decode the partition's first stage cascade value */
if(csubbits){
cval=vorbis_book_decode(books+info->class_book[classv],&vb->opb);
if(cval==-1)goto eop;
}
for(k=0;k<cdim;k++){
int book=info->class_subbook[classv][cval&(csub-1)];
cval>>=csubbits;
if(book>=0){
if((fit_value[j+k]=vorbis_book_decode(books+book,&vb->opb))==-1)
goto eop;
}else{
fit_value[j+k]=0;
}
}
j+=cdim;
}
/* unwrap positive values and reconsitute via linear interpolation */
for(i=2;i<look->posts;i++){
int predicted=render_point(info->postlist[look->loneighbor[i-2]],
info->postlist[look->hineighbor[i-2]],
fit_value[look->loneighbor[i-2]],
fit_value[look->hineighbor[i-2]],
info->postlist[i]);
int hiroom=look->quant_q-predicted;
int loroom=predicted;
int room=(hiroom<loroom?hiroom:loroom)<<1;
int val=fit_value[i];
if(val){
if(val>=room){
if(hiroom>loroom){
val = val-loroom;
}else{
val = -1-(val-hiroom);
}
}else{
if(val&1){
val= -((val+1)>>1);
}else{
val>>=1;
}
}
fit_value[i]=val+predicted;
fit_value[look->loneighbor[i-2]]&=0x7fff;
fit_value[look->hineighbor[i-2]]&=0x7fff;
}else{
int vorbis_synthesis(vorbis_block *vb,ogg_packet *op){
vorbis_dsp_state *vd= vb ? vb->vd : 0;
private_state *b= vd ? vd->backend_state : 0;
vorbis_info *vi= vd ? vd->vi : 0;
codec_setup_info *ci= vi ? vi->codec_setup : 0;
oggpack_buffer *opb=vb ? &vb->opb : 0;
int type,mode,i;
if (!vd || !b || !vi || !ci || !opb) {
return OV_EBADPACKET;
}
/* first things first. Make sure decode is ready */
_vorbis_block_ripcord(vb);
oggpack_readinit(opb,op->packet,op->bytes);
/* Check the packet type */
if(oggpack_read(opb,1)!=0){
/* Oops. This is not an audio data packet */
return(OV_ENOTAUDIO);
}
/* read our mode and pre/post windowsize */
mode=oggpack_read(opb,b->modebits);
if(mode==-1){
return(OV_EBADPACKET);
}
vb->mode=mode;
if(!ci->mode_param[mode]){
return(OV_EBADPACKET);
}
vb->W=ci->mode_param[mode]->blockflag;
if(vb->W){
/* this doesn;t get mapped through mode selection as it's used
only for window selection */
vb->lW=oggpack_read(opb,1);
vb->nW=oggpack_read(opb,1);
if(vb->nW==-1){
return(OV_EBADPACKET);
}
}else{
vb->lW=0;
vb->nW=0;
}
/* more setup */
vb->granulepos=op->granulepos;
vb->sequence=op->packetno;
vb->eofflag=op->e_o_s;
/* alloc pcm passback storage */
vb->pcmend=ci->blocksizes[vb->W];
vb->pcm=_vorbis_block_alloc(vb,sizeof(*vb->pcm)*vi->channels);
for(i=0;i<vi->channels;i++)
vb->pcm[i]=_vorbis_block_alloc(vb,vb->pcmend*sizeof(*vb->pcm[i]));
/* unpack_header enforces range checking */
type=ci->map_type[ci->mode_param[mode]->mapping];
return(_mapping_P[type]->inverse(vb,ci->map_param[ci->mode_param[mode]->
mapping]));
}
static vorbis_info_floor *floor1_unpack (vorbis_info *vi,oggpack_buffer *opb) {
codec_setup_info *ci=(codec_setup_info*)vi->codec_setup;
int j,k,count=0,maxclass=-1,rangebits;
vorbis_info_floor1 *info=(vorbis_info_floor1*)_ogg_calloc(1,sizeof(*info));
/* read partitions */
info->partitions=oggpack_read(opb,5); /* only 0 to 31 legal */
for(j=0; j<info->partitions; j++) {
info->partitionclass[j]=oggpack_read(opb,4); /* only 0 to 15 legal */
if(info->partitionclass[j]<0)goto err_out;
if(maxclass<info->partitionclass[j])maxclass=info->partitionclass[j];
}
/* read partition classes */
for(j=0; j<maxclass+1; j++) {
info->class_dim[j]=oggpack_read(opb,3)+1; /* 1 to 8 */
info->class_subs[j]=oggpack_read(opb,2); /* 0,1,2,3 bits */
if(info->class_subs[j]<0)
goto err_out;
if(info->class_subs[j])info->class_book[j]=oggpack_read(opb,8);
if(info->class_book[j]<0 || info->class_book[j]>=ci->books)
goto err_out;
for(k=0; k<(1<<info->class_subs[j]); k++) {
info->class_subbook[j][k]=oggpack_read(opb,8)-1;
if(info->class_subbook[j][k]<-1 || info->class_subbook[j][k]>=ci->books)
goto err_out;
}
}
/* read the post list */
info->mult=oggpack_read(opb,2)+1; /* only 1,2,3,4 legal now */
rangebits=oggpack_read(opb,4);
if(rangebits<0)goto err_out;
for(j=0,k=0; j<info->partitions; j++) {
count+=info->class_dim[info->partitionclass[j]];
for(; k<count; k++) {
int t=info->postlist[k+2]=oggpack_read(opb,rangebits);
if(t<0 || t>=(1<<rangebits))
goto err_out;
}
}
info->postlist[0]=0;
info->postlist[1]=1<<rangebits;
/* don't allow repeated values in post list as they'd result in
zero-length segments */
{
int *sortpointer[VIF_POSIT+2];
for(j=0; j<count+2; j++)sortpointer[j]=info->postlist+j;
qsort(sortpointer,count+2,sizeof(*sortpointer),icomp);
for(j=1; j<count+2; j++)
if(*sortpointer[j-1]==*sortpointer[j])goto err_out;
}
return(info);
err_out:
floor1_free_info(info);
return(NULL);
}
/* helpers */
static void _v_readstring(oggpack_buffer *o,char *buf,int bytes){
while(bytes--){
*buf++=oggpack_read(o,8);
}
}
/* the real encoding details are here, currently TarkinVideoLayerDesc. */
static int
_tarkin_unpack_layer_desc (TarkinInfo * vi, oggpack_buffer * opb)
{
int i, j;
vi->layer = CALLOC (vi->n_layers, (sizeof (*vi->layer)));
memset (vi->layer, 0, vi->n_layers * sizeof (*vi->layer));
#ifdef DBG_OGG
printf ("ogg: Decoding layers description: ");
#endif
for (i = 0; i < vi->n_layers; i++) {
TarkinVideoLayer *layer = vi->layer + i;
layer->desc.width = oggpack_read (opb, 32);
layer->desc.height = oggpack_read (opb, 32);
layer->desc.a_moments = oggpack_read (opb, 32);
layer->desc.s_moments = oggpack_read (opb, 32);
layer->desc.frames_per_buf = oggpack_read (opb, 32);
layer->desc.bitstream_len = oggpack_read (opb, 32);
layer->desc.format = oggpack_read (opb, 32);
switch (layer->desc.format) {
case TARKIN_GRAYSCALE:
layer->n_comp = 1;
layer->color_fwd_xform = grayscale_to_y;
layer->color_inv_xform = y_to_grayscale;
break;
case TARKIN_RGB24:
layer->n_comp = 3;
layer->color_fwd_xform = rgb24_to_yuv;
layer->color_inv_xform = yuv_to_rgb24;
break;
case TARKIN_RGB32:
layer->n_comp = 3;
layer->color_fwd_xform = rgb32_to_yuv;
layer->color_inv_xform = yuv_to_rgb32;
break;
case TARKIN_RGBA:
layer->n_comp = 4;
layer->color_fwd_xform = rgba_to_yuv;
layer->color_inv_xform = yuv_to_rgba;
break;
default:
return -TARKIN_INVALID_COLOR_FORMAT;
};
layer->waveletbuf = (Wavelet3DBuf **) CALLOC (layer->n_comp,
sizeof (Wavelet3DBuf *));
layer->packet = MALLOC (layer->n_comp * sizeof (*layer->packet));
memset (layer->packet, 0, layer->n_comp * sizeof (*layer->packet));
for (j = 0; j < layer->n_comp; j++) {
layer->waveletbuf[j] = wavelet_3d_buf_new (layer->desc.width,
layer->desc.height, layer->desc.frames_per_buf);
layer->packet[j].data = MALLOC (layer->desc.bitstream_len);
layer->packet[j].storage = layer->desc.bitstream_len;
}
vi->max_bitstream_len += layer->desc.bitstream_len + 2 * 10 * sizeof (uint32_t) * layer->n_comp; /* truncation tables */
#ifdef DBG_OGG
printf
("\n layer%d: size %dx%dx%d, format %d, a_m %d, s_m %d, %d fpb\n",
i, layer->desc.width, layer->desc.height, layer->n_comp,
layer->desc.format, layer->desc.a_moments, layer->desc.s_moments,
layer->desc.frames_per_buf);
#endif
} /* for each layer */
if (oggpack_read (opb, 1) != 1)
goto err_out; /* EOP check */
#ifdef DBG_OGG
printf ("Success\n");
#endif
return (0);
err_out:
#ifdef DBG_OGG
printf ("Failed\n");
#endif
tarkin_info_clear (vi);
return (-TARKIN_BAD_HEADER);
}
