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Merge pull request #350 from bxaimc/master

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SD9 meta cleanup and modify loop flag for newer BMIIDX games
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Christopher Snowhill 2019-01-10 00:18:13 -08:00 committed by GitHub
commit ffcb7da387
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1 changed files with 39 additions and 59 deletions
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98
src/meta/sd9.c
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@ -1,81 +1,61 @@
#include "meta.h"
#include "../util.h"
/* SD9 (found in beatmaniaIIDX16 - EMPRESS (Arcade) */
/* SD9 (found in beatmania IIDX Arcade games) */
VGMSTREAM * init_vgmstream_sd9(STREAMFILE *streamFile) {
VGMSTREAM * vgmstream = NULL;
char filename[PATH_LIMIT];
off_t start_offset;
int loop_flag, channel_count;
int loop_flag;
int channel_count;
/* check extension, case insensitive */
streamFile->get_name(streamFile,filename,sizeof(filename));
if (strcasecmp("sd9",filename_extension(filename))) goto fail;
/* check extension */
if (!check_extensions(streamFile, "sd9"))
goto fail;
/* check header */
if (read_32bitBE(0x0,streamFile) != 0x53443900) /* SD9 */
goto fail;
if (read_32bitBE(0x20,streamFile) != 0x52494646) /* RIFF */
goto fail;
if (read_32bitBE(0x28,streamFile) != 0x57415645) /* WAVE */
goto fail;
if (read_32bitBE(0x2c,streamFile) != 0x666D7420) /* fmt */
goto fail;
if (read_32bitBE(0x72,streamFile) != 0x64617461) /* data */
goto fail;
if (read_32bitBE(0x0, streamFile) != 0x53443900) /* SD9 */
goto fail;
if (read_32bitBE(0x20, streamFile) != 0x52494646) /* RIFF */
goto fail;
if (read_32bitBE(0x28, streamFile) != 0x57415645) /* WAVE */
goto fail;
if (read_32bitBE(0x2c, streamFile) != 0x666D7420) /* fmt */
goto fail;
if (read_32bitBE(0x72, streamFile) != 0x64617461) /* data */
goto fail;
loop_flag = (read_16bitLE(0x0e,streamFile)==0x1);
channel_count = read_16bitLE(0x36,streamFile);
/* build the VGMSTREAM */
vgmstream = allocate_vgmstream(channel_count,loop_flag);
/* Probably better to check if loop end exists and use as loop flag.
Blame SD9s from beatmania IIDX 21: Spada that have a flase flag
but still "loop" */
//loop_flag = (read_16bitLE(0x0e,streamFile)==0x1);
loop_flag = read_32bitLE(0x18, streamFile); // use loop end
channel_count = read_16bitLE(0x36, streamFile);
/* build the VGMSTREAM */
vgmstream = allocate_vgmstream(channel_count, loop_flag);
if (!vgmstream) goto fail;
/* fill in the vital statistics */
/* fill in the vital statistics */
start_offset = 0x7a;
vgmstream->channels = channel_count;
vgmstream->sample_rate = read_32bitLE(0x38,streamFile);
vgmstream->channels = channel_count;
vgmstream->sample_rate = read_32bitLE(0x38, streamFile);
vgmstream->coding_type = coding_MSADPCM;
vgmstream->num_samples = read_32bitLE(0x6e,streamFile);
if (loop_flag) {
if (read_16bitLE(0x1C,streamFile)==1)
{
vgmstream->loop_start_sample = read_32bitLE(0x14,streamFile)/2/channel_count;
vgmstream->loop_end_sample = read_32bitLE(0x18,streamFile)/2/channel_count;
}
else
{
vgmstream->loop_start_sample = 0;
vgmstream->loop_end_sample = vgmstream->num_samples;
}
vgmstream->num_samples = read_32bitLE(0x6e, streamFile);
if (loop_flag) {
vgmstream->loop_start_sample = read_32bitLE(0x14, streamFile) / 2 / channel_count;
vgmstream->loop_end_sample = read_32bitLE(0x18, streamFile) / 2 / channel_count;
}
vgmstream->layout_type = layout_none;
vgmstream->interleave_block_size = read_16bitLE(0x40,streamFile);
vgmstream->interleave_block_size = read_16bitLE(0x40, streamFile);
vgmstream->meta_type = meta_SD9;
/* open the file for reading */
{
int i;
STREAMFILE * file;
file = streamFile->open(streamFile,filename,STREAMFILE_DEFAULT_BUFFER_SIZE);
if (!file) goto fail;
for (i=0;i<channel_count;i++) {
vgmstream->ch[i].streamfile = file;
vgmstream->ch[i].channel_start_offset=
vgmstream->ch[i].offset=start_offset+
vgmstream->interleave_block_size*i;
}
}
return vgmstream;
if (!vgmstream_open_stream(vgmstream, streamFile, start_offset))
goto fail;
return vgmstream;
fail:
/* clean up anything we may have opened */
if (vgmstream) close_vgmstream(vgmstream);
close_vgmstream(vgmstream);
return NULL;
}
}