mirror of
https://github.com/vgmstream/vgmstream.git
synced 2024-12-22 03:15:54 +01:00
51 lines
1.5 KiB
C
51 lines
1.5 KiB
C
#include "meta.h"
|
|
|
|
|
|
/* IVAG - Namco header (from NUS3) [THE iDOLM@STER 2 (PS3), THE iDOLM@STER: Gravure For You! (PS3)] */
|
|
VGMSTREAM * init_vgmstream_ivag(STREAMFILE *streamFile) {
|
|
VGMSTREAM * vgmstream = NULL;
|
|
off_t start_offset;
|
|
|
|
int loop_flag = 0;
|
|
int channel_count;
|
|
|
|
/* checks */
|
|
/* .ivag: header id (since format can't be found outside NUS3) */
|
|
if (!check_extensions(streamFile, "ivag"))
|
|
goto fail;
|
|
|
|
if (read_32bitBE(0x00,streamFile) != 0x49564147) /* "IVAG" */
|
|
goto fail;
|
|
|
|
/* 0x04: null */
|
|
channel_count = read_32bitBE(0x08, streamFile);
|
|
loop_flag = (read_32bitBE(0x18, streamFile) != 0);
|
|
|
|
/* skip VAGp headers per channel (size 0x40) */
|
|
start_offset = 0x40 + (0x40 * channel_count);
|
|
|
|
|
|
/* build the VGMSTREAM */
|
|
vgmstream = allocate_vgmstream(channel_count,loop_flag);
|
|
if (!vgmstream) goto fail;
|
|
|
|
vgmstream->meta_type = meta_IVAG;
|
|
|
|
vgmstream->sample_rate = read_32bitBE(0x0C,streamFile);
|
|
vgmstream->num_samples = read_32bitBE(0x10,streamFile);
|
|
vgmstream->loop_start_sample = read_32bitBE(0x14,streamFile);
|
|
vgmstream->loop_end_sample = read_32bitBE(0x18,streamFile);
|
|
|
|
vgmstream->coding_type = coding_PSX;
|
|
vgmstream->layout_type = layout_interleave;
|
|
vgmstream->interleave_block_size = read_32bitBE(0x1C,streamFile);
|
|
|
|
if (!vgmstream_open_stream(vgmstream,streamFile,start_offset))
|
|
goto fail;
|
|
return vgmstream;
|
|
|
|
fail:
|
|
close_vgmstream(vgmstream);
|
|
return NULL;
|
|
}
|