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audiofxbasefirfilter: do not try to alloc really large buffers

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When nsamples_out is larger than nsamples_in, using unsigned
ints lead to a overflow and the resulting value is wrong and
way too large for allocating a buffer. Use signed integers
and returning immediatelly when that happens.
This commit is contained in:
Thiago Santos 2009-12-26 16:59:14 -03:00
parent 362785df88
commit 173be1422c
1 changed files with 2 additions and 2 deletions
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4
gst/audiofx/audiofxbasefirfilter.c
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@ -603,7 +603,7 @@ gst_audio_fx_base_fir_filter_push_residue (GstAudioFXBaseFIRFilter * self)
gint rate = GST_AUDIO_FILTER_CAST (self)->format.rate; gint rate = GST_AUDIO_FILTER_CAST (self)->format.rate;
gint channels = GST_AUDIO_FILTER_CAST (self)->format.channels; gint channels = GST_AUDIO_FILTER_CAST (self)->format.channels;
gint width = GST_AUDIO_FILTER_CAST (self)->format.width / 8; gint width = GST_AUDIO_FILTER_CAST (self)->format.width / 8;
guint outsize, outsamples; gint outsize, outsamples;
guint8 *in, *out; guint8 *in, *out;
if (channels == 0 || rate == 0 || self->nsamples_in == 0) { if (channels == 0 || rate == 0 || self->nsamples_in == 0) {
@ -616,7 +616,7 @@ gst_audio_fx_base_fir_filter_push_residue (GstAudioFXBaseFIRFilter * self)
/* Calculate the number of samples and their memory size that /* Calculate the number of samples and their memory size that
* should be pushed from the residue */ * should be pushed from the residue */
outsamples = self->nsamples_in - (self->nsamples_out - self->latency); outsamples = self->nsamples_in - (self->nsamples_out - self->latency);
if (outsamples == 0) { if (outsamples <= 0) {
self->buffer_fill = 0; self->buffer_fill = 0;
g_free (self->buffer); g_free (self->buffer);
self->buffer = NULL; self->buffer = NULL;