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16-bit support for .his

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git-svn-id: https://vgmstream.svn.sourceforge.net/svnroot/vgmstream@753 51a99a44-fe44-0410-b1ba-c3e57ba2b86b
This commit is contained in:
halleyscometsw 2010-03-03 05:14:33 +00:00
parent 788e397b4e
commit 9e8a7e89a1
1 changed files with 37 additions and 13 deletions
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50
src/meta/his.c
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@ -2,12 +2,14 @@
#include "../util.h"
/* Her Interactive Sound .his (Nancy Drew) */
/* A somewhat transformed RIFF WAVE */
VGMSTREAM * init_vgmstream_his(STREAMFILE *streamFile) {
VGMSTREAM * vgmstream = NULL;
char filename[260];
int channel_count;
int loop_flag = 0;
int bps = 0;
off_t start_offset;
const uint8_t header_magic_expected[0x16] = "Her Interactive Sound\x1a";
uint8_t header_magic[0x16];
@ -18,7 +20,6 @@ VGMSTREAM * init_vgmstream_his(STREAMFILE *streamFile) {
/* check header magic */
if (0x16 != streamFile->read(streamFile, header_magic, 0, 0x16)) goto fail;
if (memcmp(header_magic_expected, header_magic, 0x16)) goto fail;
/* data chunk label */
@ -26,36 +27,59 @@ VGMSTREAM * init_vgmstream_his(STREAMFILE *streamFile) {
start_offset = 0x2c;
/* channel count is there twice, or one is bytes per frame */
channel_count = read_16bitLE(0x16,streamFile);
if (read_16bitLE(0x20,streamFile) != channel_count) goto fail;
/* 8-bit expected */
if (read_16bitLE(0x22,streamFile) != 8) goto fail;
/* 8-bit or 16-bit expected */
switch (read_16bitLE(0x22,streamFile))
{
case 8:
bps = 1;
break;
case 16:
bps = 2;
break;
default:
goto fail;
}
/* check bytes per frame */
if (read_16bitLE(0x20,streamFile) != channel_count*bps) goto fail;
/* check size */
/* file size -8, I assume taken from RIFF, though it doesn't describe this format well */
/* file size -8 */
if ((read_32bitLE(0x1c,streamFile)+8) != get_streamfile_size(streamFile))
goto fail;
/* data chunk size, assume it occupies the rest of the file */
if ((read_32bitLE(0x28,streamFile)+start_offset) != get_streamfile_size(streamFile))
goto fail;
//if ((read_32bitLE(0x28,streamFile)+start_offset) != get_streamfile_size(streamFile))
// goto fail;
/* build the VGMSTREAM */
vgmstream = allocate_vgmstream(channel_count,loop_flag);
if (!vgmstream) goto fail;
/* fill in the vital statistics */
vgmstream->num_samples = read_32bitLE(0x28,streamFile) / channel_count;
vgmstream->num_samples = read_32bitLE(0x28,streamFile) / channel_count / bps;
vgmstream->sample_rate = read_32bitLE(0x18,streamFile);
vgmstream->coding_type = coding_PCM8_U;
vgmstream->meta_type = meta_HIS;
vgmstream->layout_type = layout_none;
if (channel_count == 2)
if (bps == 2)
{
vgmstream->coding_type = coding_PCM8_U_int;
vgmstream->interleave_block_size = 1;
vgmstream->coding_type = coding_PCM16LE;
if (channel_count == 2)
{
vgmstream->coding_type = coding_PCM16LE_int;
vgmstream->interleave_block_size = 2;
}
}
else // bps == 1
{
vgmstream->coding_type = coding_PCM8_U;
if (channel_count == 2)
{
vgmstream->coding_type = coding_PCM8_U_int;
vgmstream->interleave_block_size = 1;
}
}
/* open the file for reading */