crash fix

tmm1 · tmm1 · commit d01e4dc6c5fc · 2025-03-22T09:50:10.000-07:00
diff --git a/mpeg2dec.c b/mpeg2dec.c
@@ -569,6 +569,11 @@ void sound_to_frames(VideoState *is, short **b, int s, int c, int format)
             for (l=0;l < c;l++ )
             {
                 fb[l] = (float*)b[l];
+                // handle tracks where more channels advertised than data available
+                if (fb[l] == NULL) {
+                    c = l-1;
+                    break;
+                }
             }
             for (i = 0; i < s; i++)
             {

Original file line number	Diff line number	Diff line change
`@@ -569,6 +569,11 @@ void sound_to_frames(VideoState is, short *b, int s, int c, int format)`
`569`	`569`	`for (l=0;l < c;l++ )`
`570`	`570`	`{`
`571`	`571`	`fb[l] = (float*)b[l];`
	`572`	`+ // handle tracks where more channels advertised than data available`
	`573`	`+ if (fb[l] == NULL) {`
	`574`	`+ c = l-1;`
	`575`	`+ break;`
	`576`	`+ }`
`572`	`577`	`}`
`573`	`578`	`for (i = 0; i < s; i++)`
`574`	`579`	`{`