int num_channels;
int unitsize;
gboolean found_data;
+ gboolean create_channels;
};
static int parse_wav_header(GString *buf, struct context *inc)
return SR_OK;
}
-static int format_match(GHashTable *metadata)
+static int format_match(GHashTable *metadata, unsigned int *confidence)
{
GString *buf;
int ret;
if ((ret = parse_wav_header(buf, NULL)) != SR_OK)
return ret;
+ *confidence = 1;
+
return SR_OK;
}
static int init(struct sr_input *in, GHashTable *options)
{
+ struct context *inc;
+
(void)options;
in->sdi = g_malloc0(sizeof(struct sr_dev_inst));
in->priv = g_malloc0(sizeof(struct context));
+ inc = in->priv;
+
+ inc->create_channels = TRUE;
return SR_OK;
}
inc = in->priv;
+ total_samples = num_samples * inc->num_channels;
+ fdata = g_malloc0(total_samples * sizeof(float));
s = in->buf->str + offset;
- fdata = g_malloc0(CHUNK_SIZE * sizeof(float));
d = (char *)fdata;
- total_samples = num_samples * inc->num_channels;
+
for (samplenum = 0; samplenum < total_samples; samplenum++) {
if (inc->fmt_code == WAVE_FORMAT_PCM_) {
switch (inc->unitsize) {
static int process_buffer(struct sr_input *in)
{
struct context *inc;
- struct sr_datafeed_packet packet;
- struct sr_datafeed_meta meta;
- struct sr_config *src;
int offset, chunk_samples, total_samples, processed, max_chunk_samples;
int num_samples, i;
inc = in->priv;
if (!inc->started) {
std_session_send_df_header(in->sdi);
-
- packet.type = SR_DF_META;
- packet.payload = &meta;
- src = sr_config_new(SR_CONF_SAMPLERATE, g_variant_new_uint64(inc->samplerate));
- meta.config = g_slist_append(NULL, src);
- sr_session_send(in->sdi, &packet);
- g_slist_free(meta.config);
- sr_config_free(src);
-
+ (void)sr_session_send_meta(in->sdi, SR_CONF_SAMPLERATE,
+ g_variant_new_uint64(inc->samplerate));
inc->started = TRUE;
}
{
struct context *inc;
int ret;
- char channelname[8];
+ char channelname[16];
g_string_append_len(in->buf, buf->str, buf->len);
else if (ret != SR_OK)
return ret;
- for (int i = 0; i < inc->num_channels; i++) {
- snprintf(channelname, sizeof(channelname), "CH%d", i + 1);
- sr_channel_new(in->sdi, i, SR_CHANNEL_ANALOG, TRUE, channelname);
+ if (inc->create_channels) {
+ for (int i = 0; i < inc->num_channels; i++) {
+ snprintf(channelname, sizeof(channelname), "CH%d", i + 1);
+ sr_channel_new(in->sdi, i, SR_CHANNEL_ANALOG, TRUE, channelname);
+ }
}
+ inc->create_channels = FALSE;
+
/* sdi is ready, notify frontend. */
in->sdi_ready = TRUE;
return SR_OK;
static int reset(struct sr_input *in)
{
- struct context *inc = in->priv;
+ memset(in->priv, 0, sizeof(struct context));
+
+ /*
+ * We only want to create the sigrok channels once, so
+ * inc->create_channels won't be set to TRUE this time around.
+ */
- inc->started = FALSE;
g_string_truncate(in->buf, 0);
return SR_OK;
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,