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allow a possibly malformed AIX with missing samplerate for 2nd segment

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git-svn-id: https://vgmstream.svn.sourceforge.net/svnroot/vgmstream@908 51a99a44-fe44-0410-b1ba-c3e57ba2b86b
This commit is contained in:
halleyscometsw 2011-01-17 18:29:29 +00:00
parent c14e50f478
commit a563156be4
1 changed files with 13 additions and 6 deletions
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15
src/meta/aix.c
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@ -34,6 +34,8 @@ VGMSTREAM * init_vgmstream_aix(STREAMFILE *streamFile) {
off_t first_AIXP;
off_t stream_list_offset;
off_t stream_list_end;
const int segment_list_entry_size = 0x10;
const off_t segment_list_offset = 0x20;
int stream_count,channel_count,segment_count;
int sample_rate;
@ -51,7 +53,7 @@ VGMSTREAM * init_vgmstream_aix(STREAMFILE *streamFile) {
first_AIXP = read_32bitBE(0x4,streamFile)+8;
segment_count = (uint16_t)read_16bitBE(0x18,streamFile);
stream_list_offset = 0x20+0x10*segment_count+0x10;
stream_list_offset = segment_list_offset+segment_list_entry_size*segment_count+0x10;
if (stream_list_offset >= first_AIXP)
goto fail;
@ -71,13 +73,18 @@ VGMSTREAM * init_vgmstream_aix(STREAMFILE *streamFile) {
for (i = 0; i < segment_count; i++)
{
segment_offset[i] = read_32bitBE(0x20+0x10*i+0,streamFile);
samples_in_segment[i] = read_32bitBE(0x20+0x10*i+0x08,streamFile);
segment_offset[i] = read_32bitBE(segment_list_offset+segment_list_entry_size*i+0,streamFile);
samples_in_segment[i] = read_32bitBE(segment_list_offset+segment_list_entry_size*i+0x08,streamFile);
/*printf("samples_in_segment[%d]=%d\n",i,samples_in_segment[i]);*/
/* all segments must have equal sample rate */
if (read_32bitBE(0x20+0x10*i+0x0c,streamFile) != sample_rate)
if (read_32bitBE(segment_list_offset+segment_list_entry_size*i+0x0c,streamFile) != sample_rate)
{
/* segments > 0 can have 0 sample rate (Ryu ga gotoku: Kenzan! tenkei_sng1.aix),
seems to indicate same sample rate as first */
if (!(i > 0 && read_32bitBE(segment_list_offset+segment_list_entry_size*i+0x0c,streamFile) == 0))
goto fail;
}
}
if (segment_offset[0] != first_AIXP)
goto fail;