mirror of
https://github.com/vgmstream/vgmstream.git
synced 2024-12-22 03:15:54 +01:00
119 lines
3.7 KiB
C
119 lines
3.7 KiB
C
#include "meta.h"
|
|
#include "../layout/layout.h"
|
|
#include "../coding/coding.h"
|
|
|
|
/* Possibly the same as EA_CODEC_x in variable SCHl */
|
|
#define EA_CODEC_PCM 0x00
|
|
#define EA_CODEC_IMA 0x02
|
|
|
|
typedef struct {
|
|
int8_t version;
|
|
int8_t bps;
|
|
int8_t channels;
|
|
int8_t codec;
|
|
int16_t sample_rate;
|
|
int32_t num_samples;
|
|
|
|
int big_endian;
|
|
int loop_flag;
|
|
} ea_fixed_header;
|
|
|
|
static int parse_fixed_header(STREAMFILE* streamFile, ea_fixed_header* ea, off_t begin_offset);
|
|
|
|
|
|
/* EA SCHl with fixed header - from EA games (~1997? ex. NHL 97 PC) */
|
|
VGMSTREAM * init_vgmstream_ea_schl_fixed(STREAMFILE *streamFile) {
|
|
VGMSTREAM * vgmstream = NULL;
|
|
off_t start_offset;
|
|
size_t header_size;
|
|
ea_fixed_header ea = {0};
|
|
|
|
|
|
/* checks */
|
|
/* .asf: original
|
|
* .lasf: fake for plugins */
|
|
if (!check_extensions(streamFile,"asf,lasf"))
|
|
goto fail;
|
|
|
|
/* check header (see ea_schl.c for more info about blocks) */
|
|
if (read_32bitBE(0x00,streamFile) != 0x5343486C) /* "SCHl" */
|
|
goto fail;
|
|
|
|
header_size = read_32bitLE(0x04,streamFile);
|
|
|
|
if (!parse_fixed_header(streamFile,&ea, 0x08))
|
|
goto fail;
|
|
|
|
start_offset = header_size;
|
|
|
|
|
|
/* build the VGMSTREAM */
|
|
vgmstream = allocate_vgmstream(ea.channels, ea.loop_flag);
|
|
if (!vgmstream) goto fail;
|
|
|
|
vgmstream->sample_rate = ea.sample_rate;
|
|
vgmstream->num_samples = ea.num_samples;
|
|
//vgmstream->loop_start_sample = ea.loop_start;
|
|
//vgmstream->loop_end_sample = ea.loop_end;
|
|
|
|
vgmstream->codec_endian = ea.big_endian;
|
|
|
|
vgmstream->meta_type = meta_EA_SCHL_fixed;
|
|
|
|
vgmstream->layout_type = layout_blocked_ea_schl;
|
|
|
|
switch (ea.codec) {
|
|
case EA_CODEC_PCM:
|
|
vgmstream->coding_type = ea.bps==8 ? coding_PCM8 : (ea.big_endian ? coding_PCM16BE : coding_PCM16LE);
|
|
break;
|
|
|
|
case EA_CODEC_IMA:
|
|
vgmstream->coding_type = coding_DVI_IMA; /* stereo/mono, high nibble first */
|
|
break;
|
|
|
|
default:
|
|
VGM_LOG("EA: unknown codec 0x%02x\n", ea.codec);
|
|
goto fail;
|
|
}
|
|
|
|
|
|
if (!vgmstream_open_stream(vgmstream,streamFile,start_offset))
|
|
goto fail;
|
|
return vgmstream;
|
|
|
|
fail:
|
|
close_vgmstream(vgmstream);
|
|
return NULL;
|
|
}
|
|
|
|
|
|
static int parse_fixed_header(STREAMFILE* streamFile, ea_fixed_header* ea, off_t begin_offset) {
|
|
off_t offset = begin_offset;
|
|
|
|
if (read_32bitBE(offset+0x00, streamFile) != 0x5041546C && /* "PATl" */
|
|
read_32bitBE(offset+0x38, streamFile) != 0x544D706C) /* "TMpl" */
|
|
goto fail;
|
|
|
|
offset += 0x3c; /* after TMpl */
|
|
ea->version = read_8bit(offset+0x00, streamFile);
|
|
ea->bps = read_8bit(offset+0x01, streamFile);
|
|
ea->channels = read_8bit(offset+0x02, streamFile);
|
|
ea->codec = read_8bit(offset+0x03, streamFile);
|
|
VGM_ASSERT(read_16bitLE(offset+0x04, streamFile) != 0, "EA SCHl fixed: unknown1 found\n");
|
|
/* 0x04(16): unknown */
|
|
ea->sample_rate = (uint16_t)read_16bitLE(offset+0x06, streamFile);
|
|
ea->num_samples = read_32bitLE(offset+0x08, streamFile);
|
|
VGM_ASSERT(read_32bitLE(offset+0x0c, streamFile) != -1, "EA SCHl fixed: unknown2 found\n"); /* loop start? */
|
|
VGM_ASSERT(read_32bitLE(offset+0x10, streamFile) != -1, "EA SCHl fixed: unknown3 found\n"); /* loop end? */
|
|
VGM_ASSERT(read_32bitLE(offset+0x14, streamFile) != 0, "EA SCHl fixed: unknown4 found\n"); /* data start? */
|
|
VGM_ASSERT(read_32bitLE(offset+0x18, streamFile) != -1, "EA SCHl fixed: unknown5 found\n");
|
|
VGM_ASSERT(read_32bitLE(offset+0x1c, streamFile) != 0x7F, "EA SCHl fixed: unknown6 found\n");
|
|
|
|
//ea->loop_flag = (ea->loop_end_sample);
|
|
|
|
return 1;
|
|
|
|
fail:
|
|
return 0;
|
|
}
|