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Partially handle the irom sub-chunk

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Reject soundfonts that have ROM sample types without a valid irom sub-chunk.
This commit is contained in:
Chris Robinson 2014-01-17 06:03:53 -08:00
parent 05e9c824d5
commit 7206f5873c
1 changed files with 30 additions and 3 deletions
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33
Alc/midi/sf2load.c
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@ -556,7 +556,7 @@ static void GenModList_accumMod(GenModList *self, const Modulator *mod)
goto lbl_; \
} while(0)
static ALboolean ensureFontSanity(const Soundfont *sfont)
static ALboolean ensureFontSanity(const Soundfont *sfont, ALboolean has_irom)
{
ALsizei i;
@ -685,6 +685,17 @@ static ALboolean ensureFontSanity(const Soundfont *sfont)
return AL_FALSE;
}
for(i = 0;i < sfont->shdr_size-1;i++)
{
if((sfont->shdr[i].mSampleType&0x8000) && !has_irom)
{
WARN("Sample header %d has ROM sample type without an irom sub-chunk\n", i);
return AL_FALSE;
}
}
return AL_TRUE;
}
@ -1072,6 +1083,7 @@ ALboolean loadSf2(Reader *stream, ALsoundfont *soundfont, ALCcontext *context)
{
ALsfpreset **presets = NULL;
ALsizei presets_size = 0;
ALchar *irom = NULL;
ALuint version = 0;
ALuint ltype;
Soundfont sfont;
@ -1111,12 +1123,25 @@ ALboolean loadSf2(Reader *stream, ALsoundfont *soundfont, ALCcontext *context)
ALushort major = read_le16(stream);
ALushort minor = read_le16(stream);
info.mSize -= 4;
list.mSize -= 4;
info.mSize -= 4;
version = (major<<16) | minor;
}
}
else if(info.mCode == FOURCC('i','r','o','m'))
{
if(info.mSize == 0 || (info.mSize&1))
ERR("Invalid irom size: %d\n", info.mSize);
else
{
irom = calloc(1, info.mSize+1);
READ(stream, irom, info.mSize);
list.mSize -= info.mSize;
info.mSize -= info.mSize;
}
}
list.mSize -= info.mSize;
skip(stream, info.mSize);
}
@ -1275,7 +1300,7 @@ ALboolean loadSf2(Reader *stream, ALsoundfont *soundfont, ALCcontext *context)
if(READERR(stream) != 0)
ERROR_GOTO(error, "Error reading pdta chunk\n");
if(!ensureFontSanity(&sfont))
if(!ensureFontSanity(&sfont, irom!=NULL))
goto error;
presets = calloc(1, (sfont.phdr_size-1)*sizeof(presets[0]));
@ -1378,6 +1403,7 @@ ALboolean loadSf2(Reader *stream, ALsoundfont *soundfont, ALCcontext *context)
ExchangeInt(&soundfont->NumPresets, presets_size);
free(presets);
free(irom);
Soundfont_Destruct(&sfont);
@ -1391,6 +1417,7 @@ error:
DeletePreset(presets[i], device);
free(presets);
}
free(irom);
Soundfont_Destruct(&sfont);