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Add .adm looping (requires exe in the same dir) [Dragon Quest V (PS2)]

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This commit is contained in:
bnnm 2018-02-25 16:28:15 +01:00
parent 15ca185052
commit 3b59acbf8a
1 changed files with 58 additions and 4 deletions
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62
src/meta/ps2_adm.c
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@ -1,12 +1,15 @@
#include "meta.h"
#include "../layout/layout.h"
#include "../coding/coding.h"
#include <string.h>
static int get_adm_loop_info(STREAMFILE *streamFile, off_t *loop_start_offset);
/* .adm - from Dragon Quest V (PS2) */
VGMSTREAM * init_vgmstream_ps2_adm(STREAMFILE *streamFile) {
VGMSTREAM * vgmstream = NULL;
int channel_count, loop_flag = 0;
off_t start_offset;
off_t start_offset, loop_start_offset = 0;
/* check extension, case insensitive */
if (!check_extensions(streamFile,"adm"))
@ -22,7 +25,7 @@ VGMSTREAM * init_vgmstream_ps2_adm(STREAMFILE *streamFile) {
}
start_offset = 0x00;
loop_flag = 0; /* files loop, but apparently no info in the .adm or in the .dat bigfile containing them */
loop_flag = get_adm_loop_info(streamFile, &loop_start_offset);
channel_count = 2;
/* build the VGMSTREAM */
@ -41,10 +44,19 @@ VGMSTREAM * init_vgmstream_ps2_adm(STREAMFILE *streamFile) {
/* calc num_samples as playable data size varies between files/blocks */
vgmstream->num_samples = 0; //ps_bytes_to_samples(get_streamfile_size(streamFile), channel_count);
ps2_adm_block_update(start_offset,vgmstream);
do {
while (vgmstream->next_block_offset < get_streamfile_size(streamFile)) {
if (loop_flag && vgmstream->current_block_offset == loop_start_offset)
vgmstream->loop_start_sample = vgmstream->num_samples;
vgmstream->num_samples += ps_bytes_to_samples(vgmstream->current_block_size * channel_count, channel_count);
ps2_adm_block_update(vgmstream->next_block_offset,vgmstream);
} while (vgmstream->next_block_offset < get_streamfile_size(streamFile));
}
if (loop_flag)
vgmstream->loop_end_sample = vgmstream->num_samples;
ps2_adm_block_update(start_offset,vgmstream);
return vgmstream;
@ -53,3 +65,45 @@ fail:
close_vgmstream(vgmstream);
return NULL;
}
/* loops are not in the .ADM or .DAT bigfile containing them but in the exe; manually get them (a bit meh but whatevs) */
static int get_adm_loop_info(STREAMFILE *streamFile, off_t *loop_start_offset) {
char file_name[PATH_LIMIT];
char index_name[PATH_LIMIT];
STREAMFILE *streamExe = NULL;
int i, name_index = -1, loop_flag;
off_t offset;
streamExe = open_stream_name(streamFile, "SLPM_655.55");
if (!streamExe) goto fail;
get_streamfile_filename(streamFile, file_name, PATH_LIMIT);
/* get file index from name list (file_name == index_name = index number */
offset = 0x23B3c0;
for (i = 0; i < 51; i++) {
read_string(index_name,0x20+1, offset,streamExe);
if (strcmp(index_name, file_name)==0) {
name_index = i;
break;
}
offset += 0x20;
}
if (name_index < 0)
goto fail;
/* get file info using index */
offset = 0x23BAEC + 0x1c*name_index;
loop_flag = (read_32bitLE(offset + 0x10, streamExe) == 0); /* 1: don't loop, 0: loop */
if (loop_flag) { /* loop flag */
*loop_start_offset = read_32bitLE(offset + 0x04, streamExe);
}
/* 0x08: num_samples/loop_end, 0x0c: sample rate (always 44100), 0x14/18: some size? */
close_streamfile(streamExe);
return loop_flag;
fail:
close_streamfile(streamExe);
return 0;
}