FWGS/xash3d-fwgs
2
0
Fork 0
mirror of https://github.com/FWGS/xash3d-fwgs synced 2024-11-24 10:50:58 +01:00
Code Issues 2 Projects Releases Wiki Activity

engine: soundlib: snd_wav: take FindNextChunk fixes from FTEQW

Browse Source
This commit is contained in:
Alibek Omarov 2023-08-03 01:05:39 +03:00
parent e23580c1de
commit bf03f739bb
1 changed files with 27 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

43
engine/common/soundlib/snd_wav.c
View File

@ -1,6 +1,7 @@
/*
snd_wav.c - wav format load & save
Copyright (C) 2010 Uncle Mike
Copyright (C) 2023 FTEQW developers
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@ -13,6 +14,7 @@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
*/
#include <stddef.h>
#include "soundlib.h"
static const byte *iff_data;
@ -60,32 +62,41 @@ static int GetLittleLong( void )
FindNextChunk
=================
*/
static void FindNextChunk( const char *name )
static void FindNextChunk( const char *filename, const char *name )
{
while( 1 )
{
iff_dataPtr = iff_lastChunk;
ptrdiff_t remaining = iff_end - iff_lastChunk;
if( iff_dataPtr >= iff_end )
if( remaining < 8 )
{
// didn't find the chunk
iff_dataPtr = NULL;
return;
}
iff_dataPtr += 4;
iff_chunkLen = GetLittleLong();
iff_dataPtr = iff_lastChunk + 4;
remaining -= 8;
iff_chunkLen = GetLittleLong();
if( iff_chunkLen < 0 )
{
iff_dataPtr = NULL;
return;
}
iff_dataPtr -= 8;
iff_lastChunk = iff_dataPtr + 8 + ((iff_chunkLen + 1) & ~1);
if( iff_chunkLen > remaining )
{
Con_DPrintf( "%s: '%s' truncated by %i bytes", __func__, filename, iff_chunkLen - remaining );
iff_chunkLen = remaining;
}
if( !Q_strncmp( (const char *)iff_dataPtr, name, 4 ))
remaining -= iff_chunkLen;
iff_dataPtr -= 8;
iff_lastChunk = iff_dataPtr + 8 + iff_chunkLen;
if ((iff_chunkLen&1) && remaining)
iff_lastChunk++;
if (!Q_strncmp(iff_dataPtr, name, 4))
return;
}
}
@ -95,10 +106,10 @@ static void FindNextChunk( const char *name )
FindChunk
=================
*/
static void FindChunk( const char *name )
static void FindChunk( const char *filename, const char *name )
{
iff_lastChunk = iff_data;
FindNextChunk( name );
FindNextChunk( filename, name );
}
/*
@ -151,7 +162,7 @@ qboolean Sound_LoadWAV( const char *name, const byte *buffer, fs_offset_t filesi
iff_end = buffer + filesize;
// find "RIFF" chunk
FindChunk( "RIFF" );
FindChunk( name, "RIFF" );
if( !( iff_dataPtr && !Q_strncmp( (const char *)iff_dataPtr + 8, "WAVE", 4 )))
{
@ -161,7 +172,7 @@ qboolean Sound_LoadWAV( const char *name, const byte *buffer, fs_offset_t filesi
// get "fmt " chunk
iff_data = iff_dataPtr + 12;
FindChunk( "fmt " );
FindChunk( name, "fmt " );
if( !iff_dataPtr )
{
@ -206,13 +217,13 @@ qboolean Sound_LoadWAV( const char *name, const byte *buffer, fs_offset_t filesi
}
// get cue chunk
FindChunk( "cue " );
FindChunk( name, "cue " );
if( iff_dataPtr )
{
iff_dataPtr += 32;
sound.loopstart = GetLittleLong();
FindNextChunk( "LIST" ); // if the next chunk is a LIST chunk, look for a cue length marker
FindNextChunk( name, "LIST" ); // if the next chunk is a LIST chunk, look for a cue length marker
if( iff_dataPtr )
{
@ -231,7 +242,7 @@ qboolean Sound_LoadWAV( const char *name, const byte *buffer, fs_offset_t filesi
}
// find data chunk
FindChunk( "data" );
FindChunk( name, "data" );
if( !iff_dataPtr )
{