/* all of the real encoding details are here. The modes, books,
* everything */
public static int _vorbis_unpack_books(vorbis_info vi, oggpack_buffer opb)
{
codec_setup_info ci = vi.codec_setup;
int i;
/* codebooks */
ci.books = (int)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] == null)
{
goto err_out;
}
}
/* time backend settings; hooks are unused */
{
int times = (int)oggpack_read(opb, 6) + 1;
if (times <= 0)
{
goto err_out;
}
for (i = 0; i < times; i++)
{
int test = (int)oggpack_read(opb, 16);
if (test < 0 || test >= VI_TIMEB)
{
goto err_out;
}
}
}
/* floor backend settings */
ci.floors = (int)oggpack_read(opb, 6) + 1;
if (ci.floors <= 0)
{
goto err_out;
}
for (i = 0; i < ci.floors; i++)
{
ci.floor_type[i] = (int)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] == null)
{
goto err_out;
}
}
/* residue backend settings */
ci.residues = (int)oggpack_read(opb, 6) + 1;
if (ci.residues <= 0)
{
goto err_out;
}
for (i = 0; i < ci.residues; i++)
{
ci.residue_type[i] = (int)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] == null)
{
goto err_out;
}
}
/* map backend settings */
ci.maps = (int)oggpack_read(opb, 6) + 1;
if (ci.maps <= 0)
{
goto err_out;
}
for (i = 0; i < ci.maps; i++)
{
ci.map_type[i] = (int)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] == null)
{
goto err_out;
}
}
/* mode settings */
ci.modes = (int)oggpack_read(opb, 6) + 1;
if (ci.modes <= 0)
{
goto err_out;
}
for (i = 0; i < ci.modes; i++)
{
ci.mode_param[i] = new vorbis_info_mode(); //_ogg_calloc(1, sizeof(*ci.mode_param[i]));
ci.mode_param[i].blockflag = (int)oggpack_read(opb, 1);
ci.mode_param[i].windowtype = (int)oggpack_read(opb, 16);
ci.mode_param[i].transformtype = (int)oggpack_read(opb, 16);
ci.mode_param[i].mapping = (int)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);
}
public static void vorbis_info_clear(vorbis_info vi)
{
codec_setup_info ci = vi.codec_setup;
int i;
if (ci != null)
{
for (i = 0; i < ci.modes; i++)
{
if (ci.mode_param[i] != null) //_ogg_free(ci.mode_param[i]);
{
ci.mode_param[i] = null;
}
}
for (i = 0; i < ci.maps; i++) /* unpack does the range checking */
{
if (ci.map_param[i] != null) /* this may be cleaning up an aborted
* unpack, in which case the below type
* cannot be trusted */
//_mapping_P[ci.map_type[i]].free_info(ci.map_param[i]);
{
ci.map_param[i] = null;
}
}
for (i = 0; i < ci.floors; i++) /* unpack does the range checking */
{
if (ci.floor_param[i] != null) /* this may be cleaning up an aborted
* unpack, in which case the below type
* cannot be trusted */
//_floor_P[ci.floor_type[i]].free_info(ci.floor_param[i]);
{
ci.floor_param[i] = null;
}
}
for (i = 0; i < ci.residues; i++) /* unpack does the range checking */
{
if (ci.residue_param[i] != null) /* this may be cleaning up an aborted
* unpack, in which case the below type
* cannot be trusted */
//_residue_P[ci.residue_type[i]].free_info(ci.residue_param[i]);
{
ci.residue_param[i] = null;
}
}
for (i = 0; i < ci.books; i++)
{
if (ci.book_param[i] != null)
{
/* knows if the book was not alloced */
vorbis_staticbook_destroy(ci.book_param[i]);
}
//if (ci.fullbooks != null)
// vorbis_book_clear(ci.fullbooks + i);
}
if (ci.fullbooks != null)
{
//_ogg_free(ci.fullbooks);
ci.fullbooks = null;
}
for (i = 0; i < ci.psys; i++)
{
//_vi_psy_free(ci.psy_param[i]);
ci.psy_param[i] = null;
}
//_ogg_free(ci);
vi.codec_setup = null;
}
//memset(vi, 0, sizeof(*vi));
}
/* Header packing/unpacking ********************************************/
public static int _vorbis_unpack_info(vorbis_info vi, oggpack_buffer opb)
{
codec_setup_info ci = vi.codec_setup;
int bs;
if (ci == null)
{
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 = (int)oggpack_read(opb, 32);
vi.bitrate_nominal = (int)oggpack_read(opb, 32);
vi.bitrate_lower = (int)oggpack_read(opb, 32);
bs = (int)oggpack_read(opb, 4);
if (bs < 0)
{
goto err_out;
}
ci.blocksizes[0] = 1 << bs;
bs = (int)oggpack_read(opb, 4);
if (bs < 0)
{
goto err_out;
}
ci.blocksizes[1] = 1 << bs;
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);
}
