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