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monoscope: stack needs to be size+1 as we put a end-marker into it

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Valgrind is still complaining about one bad read, but this takes care of the
crash mentioned in the comment and in bug #564122.
This commit is contained in:
Stefan Kost 2011-03-02 10:56:33 +02:00
parent 4e9daf0e49
commit d2ee8b979d
1 changed files with 4 additions and 7 deletions
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11
gst/monoscope/convolve.c
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@ -90,7 +90,7 @@ struct _struct_convolve_state
double left[CONVOLVE_BIG];
double right[CONVOLVE_SMALL * 3];
double scratch[CONVOLVE_SMALL * 3];
stack_entry stack[STACK_SIZE];
stack_entry stack[STACK_SIZE + 1];
};
/*
@ -102,7 +102,7 @@ struct _struct_convolve_state
convolve_state *
convolve_init (void)
{
return (convolve_state *) malloc (sizeof (convolve_state));
return (convolve_state *) calloc (1, sizeof (convolve_state));
}
/*
@ -111,8 +111,7 @@ convolve_init (void)
void
convolve_close (convolve_state * state)
{
if (state)
free (state);
free (state);
}
static void
@ -267,7 +266,7 @@ convolve_match (const int *lastchoice,
double *left = state->left;
double *right = state->right;
double *scratch = state->scratch;
stack_entry *top = state->stack + STACK_SIZE - 1;
stack_entry *top = state->stack + (STACK_SIZE - 1);
#if 1
for (i = 0; i < 512; i++)
@ -288,9 +287,7 @@ convolve_match (const int *lastchoice,
for (i = 0; i < 256; i++)
right[i] -= avg;
/* End-of-stack marker. */
#if 0 /* The following line produces a CRASH, need to figure out why?!! */
top[1].b.null = scratch;
#endif
top[1].b.main = NULL;
/* The low 256x256, of which we want the high 256 outputs. */
top->v.left = left;