opusenc: avoid potential overflow expression

The result of the two expressions will be promoted to guint64 anyway,
perform all the arithmetic in 64 bits to avoid potential overflows.

CID 1338690, CID 1338691

1 files changed, 3 insertions, 2 deletions

diff --git a/ext/opus/gstopusenc.c b/ext/opus/gstopusenc.c
index 729b2150c..d4a685adc 100644
--- a/ext/opus/gstopusenc.c
+++ b/ext/opus/gstopusenc.c
@@ -1007,7 +1007,7 @@ gst_opus_enc_encode (GstOpusEnc * enc, GstBuffer * buf)
           trim_start = enc->pending_lookahead;
           enc->pending_lookahead = 0;
         } else {
-          trim_start = input_samples * 48000 / enc->sample_rate;
+          trim_start = ((guint64) input_samples) * 48000 / enc->sample_rate;
           enc->pending_lookahead -= trim_start;
           output_samples = 0;
         }
@@ -1026,7 +1026,8 @@ gst_opus_enc_encode (GstOpusEnc * enc, GstBuffer * buf)
       output_samples = enc->consumed_samples - enc->encoded_samples;
       input_samples = 0;
       GST_DEBUG_OBJECT (enc, "draining %d samples", output_samples);
-      trim_end = (frame_samples - output_samples) * 48000 / enc->sample_rate;
+      trim_end =
+          ((guint64) frame_samples - output_samples) * 48000 / enc->sample_rate;
     } else if (enc->encoded_samples == enc->consumed_samples) {
       GST_DEBUG_OBJECT (enc, "nothing to drain");
       goto done;