vgmstream/src/meta/ao.c
2018-09-22 17:35:48 -07:00

37 lines
915 B
C

#include "meta.h"
#include "../coding/coding.h"
/* .AO - from AlphaOgg lib [Cloudphobia (PC)] */
VGMSTREAM * init_vgmstream_ao(STREAMFILE *streamFile) {
VGMSTREAM * vgmstream = NULL;
off_t start_offset;
/* checks */
if ( !check_extensions(streamFile,"ao") )
goto fail;
if (read_32bitBE(0x00,streamFile) != 0x414C5048) /* "ALPH" */
goto fail;
if (read_32bitBE(0x04,streamFile) != 0x414F4747) /* "AOGG" */
goto fail;
#ifdef VGM_USE_VORBIS
{
ogg_vorbis_meta_info_t ovmi = {0};
ovmi.meta_type = meta_AO;
/* values at 0x08/0x0c/0x10 may be related to looping? */
start_offset = 0xc8;
vgmstream = init_vgmstream_ogg_vorbis_callbacks(streamFile, NULL, start_offset, &ovmi);
}
#else
goto fail;
#endif
return vgmstream;
fail:
close_vgmstream(vgmstream);
return NULL;
}