mirror of
https://github.com/vgmstream/vgmstream.git
synced 2024-12-23 20:04:50 +01:00
1c042b7784
Both IMA and IMA_int work the same then channels = 1, so this is just to signal when IMA stereo (nibble interleave) is actually used (ie. rarely)
50 lines
1.5 KiB
C
50 lines
1.5 KiB
C
#include "meta.h"
|
|
|
|
/* ADP - from Balls of Steel */
|
|
VGMSTREAM * init_vgmstream_pc_adp_bos(STREAMFILE *streamFile) {
|
|
VGMSTREAM * vgmstream = NULL;
|
|
off_t start_offset;
|
|
int loop_flag = 0;
|
|
int channel_count;
|
|
|
|
if (!check_extensions(streamFile,"adp")) goto fail;
|
|
|
|
/* check header */
|
|
if (read_32bitBE(0x00,streamFile) != 0x41445021) /* "ADP!" */
|
|
goto fail;
|
|
|
|
loop_flag = (-1 != read_32bitLE(0x08,streamFile));
|
|
channel_count = 1;
|
|
|
|
/* build the VGMSTREAM */
|
|
vgmstream = allocate_vgmstream(channel_count,loop_flag);
|
|
if (!vgmstream) goto fail;
|
|
|
|
/* fill in the vital statistics */
|
|
start_offset = 0x18;
|
|
vgmstream->channels = channel_count;
|
|
vgmstream->sample_rate = read_32bitLE(0x0C,streamFile);
|
|
vgmstream->num_samples = read_32bitLE(0x04,streamFile);
|
|
if (loop_flag) {
|
|
vgmstream->loop_start_sample = read_32bitLE(0x08,streamFile);
|
|
vgmstream->loop_end_sample = vgmstream->num_samples;
|
|
}
|
|
|
|
vgmstream->coding_type = coding_DVI_IMA_int;
|
|
vgmstream->layout_type = layout_none;
|
|
vgmstream->meta_type = meta_BOS_ADP;
|
|
|
|
// 0x10, 0x12 - both initial history?
|
|
//vgmstream->ch[0].adpcm_history1_32 = read_16bitLE(0x10,streamFile);
|
|
// 0x14 - initial step index?
|
|
//vgmstream->ch[0].adpcm_step_index = read_32bitLE(0x14,streamFile);
|
|
|
|
if (!vgmstream_open_stream(vgmstream, streamFile, start_offset))
|
|
goto fail;
|
|
return vgmstream;
|
|
|
|
fail:
|
|
close_vgmstream(vgmstream);
|
|
return NULL;
|
|
}
|