X-Git-Url: https://sigrok.org/gitweb/?a=blobdiff_plain;f=src%2Foutput%2Fwav.c;h=f991cbfdc68526d9fea8754ad200565b712076a9;hb=44040ea65e7980765775d76af734c2d5fb0f8822;hp=14ef36df185c3b862529be98767dedb214943cd5;hpb=da3d141f04e9a17bd41c5adfb5c83369fe3759df;p=libsigrok.git

diff --git a/src/output/wav.c b/src/output/wav.c
index 14ef36df..f991cbfd 100644
--- 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;
@@ -312,7 +315,7 @@ static int receive(const struct sr_output *o, const struct sr_datafeed_packet *p
 			for (j = 0; j < num_channels; j++) {
 				idx = chan_idx[j];
 				buf = outc->chanbuf[idx] + outc->chanbuf_used[idx]++ * 4;
-				f = analog_old->data[i * num_channels + j];
+				f = data[i * num_channels + j];
 				if (outc->scale != 0.0)
 					f /= outc->scale;
 				float_to_le(buf, f);
@@ -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;