X-Git-Url: https://sigrok.org/gitweb/?a=blobdiff_plain;f=src%2Finput%2Fwav.c;h=8ec3141ec9cf02ec1547052533238f7155f52386;hb=cdb134eb19e23528ec9c9dd89805087ea3edb9b6;hp=35247112b05de8ac45e665a444f5a29e2155de2a;hpb=1a14a6234910ee388574badc7c6a94fd637b21cd;p=libsigrok.git

diff --git a/src/input/wav.c b/src/input/wav.c
index 35247112..8ec3141e 100644
--- a/src/input/wav.c
+++ b/src/input/wav.c
@@ -31,7 +31,7 @@
 #define LOG_PREFIX "input/wav"
 
 /* How many bytes at a time to process and send to the session bus. */
-#define CHUNK_SIZE               4096
+#define CHUNK_SIZE               (1 * 1024 * 1024 * sizeof(float))
 
 /* Minimum size of header + 1 8-bit mono PCM sample. */
 #define MIN_DATA_CHUNK_OFFSET    45
@@ -189,15 +189,15 @@ static void send_chunk(const struct sr_input *in, int offset, int num_samples)
 	struct sr_analog_meaning meaning;
 	struct sr_analog_spec spec;
 	struct context *inc;
-	float fdata[CHUNK_SIZE];
+	float *fdata;
 	int total_samples, samplenum;
 	char *s, *d;
 
 	inc = in->priv;
 
 	s = in->buf->str + offset;
+	fdata = g_malloc0(CHUNK_SIZE * sizeof(float));
 	d = (char *)fdata;
-	memset(fdata, 0, CHUNK_SIZE * sizeof(float));
 	total_samples = num_samples * inc->num_channels;
 	for (samplenum = 0; samplenum < total_samples; samplenum++) {
 		if (inc->fmt_code == WAVE_FORMAT_PCM_) {
@@ -238,6 +238,7 @@ static void send_chunk(const struct sr_input *in, int offset, int num_samples)
 	analog.meaning->mqflags = 0;
 	analog.meaning->unit = 0;
 	sr_session_send(in->sdi, &packet);
+	g_free(fdata);
 }
 
 static int process_buffer(struct sr_input *in)
@@ -331,7 +332,7 @@ static int receive(struct sr_input *in, GString *buf)
 			return ret;
 
 		for (int i = 0; i < inc->num_channels; i++) {
-			snprintf(channelname, 8, "CH%d", i + 1);
+			snprintf(channelname, sizeof(channelname), "CH%d", i + 1);
 			sr_channel_new(in->sdi, i, SR_CHANNEL_ANALOG, TRUE, channelname);
 		}
 
@@ -375,7 +376,7 @@ static int reset(struct sr_input *in)
 SR_PRIV struct sr_input_module input_wav = {
 	.id = "wav",
 	.name = "WAV",
-	.desc = "WAV file",
+	.desc = "Microsoft WAV file format data",
 	.exts = (const char*[]){"wav", NULL},
 	.metadata = { SR_INPUT_META_HEADER | SR_INPUT_META_REQUIRED },
 	.format_match = format_match,