output/wav: track and free memory for float conversion buffer

diff --git a/src/output/wav.c b/src/output/wav.c
index 14ef36df185c3b862529be98767dedb214943cd5..87ac44ac463d840726d2ea12a193927f89ee8175 100644 (file)
--- a/src/output/wav.c
+++ b/src/output/wav.c
@@ -36,6 +36,7 @@ struct out_context {
        int chanbuf_size;
        int *chanbuf_used;
        uint8_t **chanbuf;
+       float *fdata;
 };
 
 static int realloc_chanbufs(const struct sr_output *o, int size)
@@ -281,7 +282,9 @@ static int receive(const struct sr_output *o, const struct sr_datafeed_packet *p
                        num_samples = analog->num_samples;
                        channels = analog->meaning->channels;
                        num_channels = g_slist_length(analog->meaning->channels);
-                       data = g_malloc(sizeof(float) * num_samples * num_channels);
+                       if (!(data = g_try_realloc(outc->fdata, sizeof(float) * num_samples * num_channels)))
+                               return SR_ERR_MALLOC;
+                       outc->fdata = data;
                        ret = sr_analog_to_float(analog, data);
                        if (ret != SR_OK)
                                return ret;
@@ -363,6 +366,7 @@ static int cleanup(struct sr_output *o)
                g_free(outc->chanbuf[i]);
        g_free(outc->chanbuf_used);
        g_free(outc->chanbuf);
+       g_free(outc->fdata);
        g_free(outc);
        o->priv = NULL;