gecko/media/libvorbis/bug498855.patch
2009-06-19 15:33:29 +12:00

37 lines
1.2 KiB
Diff

diff --git a/media/libvorbis/lib/vorbis_synthesis.c b/media/libvorbis/lib/vorbis_synthesis.c
index b7b2399..05774fd 100644
--- a/media/libvorbis/lib/vorbis_synthesis.c
+++ b/media/libvorbis/lib/vorbis_synthesis.c
@@ -19,22 +19,26 @@
#include <ogg/ogg.h>
#include "vorbis/codec.h"
#include "codec_internal.h"
#include "registry.h"
#include "misc.h"
#include "os.h"
int vorbis_synthesis(vorbis_block *vb,ogg_packet *op){
- vorbis_dsp_state *vd=vb->vd;
- private_state *b=vd->backend_state;
- vorbis_info *vi=vd->vi;
- codec_setup_info *ci=vi->codec_setup;
- oggpack_buffer *opb=&vb->opb;
+ vorbis_dsp_state *vd= vb ? vb->vd : 0;
+ private_state *b= vd ? vd->backend_state : 0;
+ vorbis_info *vi= vd ? vd->vi : 0;
+ codec_setup_info *ci= vi ? vi->codec_setup : 0;
+ oggpack_buffer *opb=vb ? &vb->opb : 0;
int type,mode,i;
+
+ if (!vd || !b || !vi || !ci || !opb) {
+ return OV_EBADPACKET;
+ }
/* first things first. Make sure decode is ready */
_vorbis_block_ripcord(vb);
oggpack_readinit(opb,op->packet,op->bytes);
/* Check the packet type */
if(oggpack_read(opb,1)!=0){
/* Oops. This is not an audio data packet */