#define LOG_PREFIX "input/trace32_ad"
-#define MAX_CHUNK_SIZE 4096
-#define OUTBUF_FLUSH_SIZE 10240
+#define CHUNK_SIZE (4 * 1024 * 1024)
#define MAX_POD_COUNT 12
#define HEADER_SIZE 80
-#define TIMESTAMP_RESOLUTION ((double)0.000000000078125) /* 0.078125 ns */
+#define TIMESTAMP_RESOLUTION ((double)0.000000000078125) /* 0.078125 ns */
/*
* The resolution equals a sampling freq of 12.8 GHz. That's a bit high
* for inter-record sample generation, so we scale it down to 200 MHz
* for now. That way, the scaling factor becomes 32.
*/
-#define SAMPLING_FREQ 200000000
-#define TIMESTAMP_SCALE ((1 / TIMESTAMP_RESOLUTION) / SAMPLING_FREQ)
+#define DEFAULT_SAMPLERATE 200
enum {
AD_FORMAT_BINHDR = 1, /* Binary header, binary data, textual setup info */
enum {
AD_COMPR_NONE = 0, /* File created with /NOCOMPRESS */
- AD_COMPR_QCOMP = 6 /* File created with /COMPRESS or /QUICKCOMPRESS */
+ AD_COMPR_QCOMP = 6, /* File created with /COMPRESS or /QUICKCOMPRESS */
};
struct context {
uint64_t trigger_timestamp;
uint32_t record_size, record_count, cur_record;
int32_t last_record;
+ uint64_t samplerate;
+ double timestamp_scale;
GString *out_buf;
};
static int process_header(GString *buf, struct context *inc);
static void create_channels(struct sr_input *in);
+/* Transform non-printable chars to '\xNN' presentation. */
+static char *printable_name(const char *name)
+{
+ size_t l, i;
+ char *s, *p;
+
+ if (!name)
+ return NULL;
+ l = strlen(name);
+ s = g_malloc0(l * strlen("\\x00") + 1);
+ for (p = s, i = 0; i < l; i++) {
+ if (g_ascii_isprint(name[i])) {
+ *p++ = name[i];
+ } else {
+ snprintf(p, 5, "\\x%05x", name[i]);
+ p += strlen("\\x00");
+ }
+ }
+ *p = '\0';
+
+ return s;
+}
+
static char get_pod_name_from_id(int id)
{
switch (id) {
inc = in->priv;
+ /* Calculate the desired timestamp scaling factor. */
+ inc->samplerate = 1000000 *
+ g_variant_get_uint32(g_hash_table_lookup(options, "samplerate"));
+
+ inc->timestamp_scale = ((1 / TIMESTAMP_RESOLUTION) / (double)inc->samplerate);
+
/* Enable the pods the user chose to see. */
for (pod = 0; pod < MAX_POD_COUNT; pod++) {
g_snprintf(id, sizeof(id), "pod%c", get_pod_name_from_id(pod));
return SR_ERR;
}
- inc->out_buf = g_string_sized_new(OUTBUF_FLUSH_SIZE);
+ inc->out_buf = g_string_sized_new(CHUNK_SIZE);
return SR_OK;
}
-static int format_match(GHashTable *metadata)
+static int format_match(GHashTable *metadata, unsigned int *confidence)
{
GString *buf;
+ int rc;
buf = g_hash_table_lookup(metadata, GINT_TO_POINTER(SR_INPUT_META_HEADER));
+ rc = process_header(buf, NULL);
- return process_header(buf, NULL);
+ if (rc != SR_OK)
+ return rc;
+ *confidence = 10;
+
+ return SR_OK;
}
static int process_header(GString *buf, struct context *inc)
{
char *format_name, *format_name_sig;
+ char *p;
int i, record_size, device_id;
/*
* 78-79 (0x4E-4F) ??
*/
- /* Note: inc is off-limits until we check whether it's a valid pointer. */
+ /*
+ * Note: The routine is called from different contexts. Either
+ * to auto-detect the file format (format_match(), 'inc' is NULL),
+ * or to process the data during acquisition (receive(), 'inc'
+ * is a valid pointer). This header parse routine shall gracefully
+ * deal with unexpected or incorrect input data.
+ */
format_name = g_strndup(buf->str, 32);
inc->format = AD_FORMAT_TXTHDR;
g_free(format_name_sig);
g_free(format_name);
- sr_err("This format isn't implemented yet, aborting.");
+ if (inc)
+ sr_err("This format isn't implemented yet, aborting.");
return SR_ERR;
} else {
g_free(format_name_sig);
g_free(format_name);
- sr_err("Don't know this file format, aborting.");
+ if (inc)
+ sr_err("Don't know this file format, aborting.");
return SR_ERR;
}
- sr_dbg("File says it's \"%s\"", format_name);
+ p = printable_name(format_name);
+ sr_dbg("File says it's \"%s\"", p);
+ g_free(p);
record_size = R8(buf->str + 56);
device_id = 0;
inc->device = device_id;
inc->trigger_timestamp = RL64(buf->str + 32);
- inc->compression = R8(buf->str + 48); /* Maps to the enum. */
- inc->record_mode = R8(buf->str + 55); /* Maps to the enum. */
+ inc->compression = R8(buf->str + 48); /* Maps to the enum. */
+ inc->record_mode = R8(buf->str + 55); /* Maps to the enum. */
inc->record_size = record_size;
inc->record_count = RL32(buf->str + 60);
inc->last_record = RL32S(buf->str + 64);
continue;
for (channel = 0; channel < 16; channel++) {
- snprintf(name, 8, "%c%d", get_pod_name_from_id(pod), channel);
+ snprintf(name, sizeof(name), "%c%d", get_pod_name_from_id(pod), channel);
inc->channels[pod][channel] =
sr_channel_new(in->sdi, chan_id, SR_CHANNEL_LOGIC, TRUE, name);
chan_id++;
}
- snprintf(name, 8, "CLK%c", get_pod_name_from_id(pod));
+ snprintf(name, sizeof(name), "CLK%c", get_pod_name_from_id(pod));
inc->channels[pod][16] =
sr_channel_new(in->sdi, chan_id, SR_CHANNEL_LOGIC, TRUE, name);
chan_id++;
struct sr_config *src;
struct context *inc;
+ inc = in->priv;
+
packet.type = SR_DF_META;
packet.payload = &meta;
- src = sr_config_new(SR_CONF_SAMPLERATE, g_variant_new_uint64(SAMPLING_FREQ));
+ 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);
- inc = in->priv;
inc->meta_sent = TRUE;
}
} else {
/* It's not, so fill the time gap by sending lots of data. */
next_timestamp = RL64(buf->str + start + inc->record_size);
- packet_count = (int)(next_timestamp - timestamp) / TIMESTAMP_SCALE;
+ packet_count = (int)(next_timestamp - timestamp) / inc->timestamp_scale;
/* Make sure we send at least one data set. */
if (packet_count == 0)
g_string_append_len(inc->out_buf, single_payload, payload_len);
}
- if (inc->out_buf->len >= OUTBUF_FLUSH_SIZE)
+ if (inc->out_buf->len >= CHUNK_SIZE)
flush_output_buffer(in);
}
} else {
/* It's not, so fill the time gap by sending lots of data. */
next_timestamp = RL64(in->buf->str + start + inc->record_size);
- packet_count = (int)(next_timestamp - timestamp) / TIMESTAMP_SCALE;
+ packet_count = (int)(next_timestamp - timestamp) / inc->timestamp_scale;
/* Make sure we send at least one data set. */
if (packet_count == 0)
g_string_append_len(inc->out_buf, single_payload, payload_len);
}
- if (inc->out_buf->len >= OUTBUF_FLUSH_SIZE)
+ if (inc->out_buf->len >= CHUNK_SIZE)
flush_output_buffer(in);
}
}
if (!inc->meta_sent) {
- std_session_send_df_header(in->sdi, LOG_PREFIX);
+ std_session_send_df_header(in->sdi);
send_metadata(in);
}
flush_output_buffer(in);
if (inc->meta_sent)
- std_session_send_df_end(in->sdi, LOG_PREFIX);
+ std_session_send_df_end(in->sdi);
return ret;
}
+static int reset(struct sr_input *in)
+{
+ struct context *inc = in->priv;
+
+ inc->meta_sent = FALSE;
+ inc->header_read = FALSE;
+ inc->records_read = FALSE;
+ inc->trigger_sent = FALSE;
+ inc->cur_record = 0;
+
+ g_string_truncate(in->buf, 0);
+
+ return SR_OK;
+}
+
static struct sr_option options[] = {
{ "podA", "Import pod A / iprobe",
"Create channels and data for pod A / iprobe", NULL, NULL },
{ "podM", "Import pod M", "Create channels and data for pod M", NULL, NULL },
{ "podN", "Import pod N", "Create channels and data for pod N", NULL, NULL },
{ "podO", "Import pod O", "Create channels and data for pod O", NULL, NULL },
+
+ { "samplerate", "Reduced sample rate (MHz)", "Reduce the original sample rate of 12.8 GHz to the specified sample rate in MHz", NULL, NULL },
+
ALL_ZERO
};
options[9].def = g_variant_ref_sink(g_variant_new_boolean(FALSE));
options[10].def = g_variant_ref_sink(g_variant_new_boolean(FALSE));
options[11].def = g_variant_ref_sink(g_variant_new_boolean(FALSE));
+ options[12].def = g_variant_ref_sink(g_variant_new_uint32(DEFAULT_SAMPLERATE));
}
return options;
.init = init,
.receive = receive,
.end = end,
+ .reset = reset,
};
projects / libsigrok.git / blobdiff