#define LOG_PREFIX "input/vcd"
-#define DEFAULT_NUM_CHANNELS 8
#define CHUNKSIZE (1024 * 1024)
struct context {
status = FALSE;
pos = 0;
+ /* Skip UTF8 BOM */
+ if (buf->len >= 3 && !strncmp(buf->str, "\xef\xbb\xbf", 3))
+ pos = 3;
+
/* Skip any initial white-space. */
while (pos < buf->len && g_ascii_isspace(buf->str[pos]))
pos++;
sr_info("Unsupported signal type: '%s'", parts[0]);
else if (strtol(parts[1], NULL, 10) != 1)
sr_info("Unsupported signal size: '%s'", parts[1]);
- else if (inc->channelcount >= inc->maxchannels)
+ else if (inc->maxchannels && inc->channelcount >= inc->maxchannels)
sr_warn("Skipping '%s%s' because only %d channels requested.",
parts[3], parts[4] ? : "", inc->maxchannels);
else {
sr_info("Channel %d is '%s' identified by '%s'.",
inc->channelcount, vcd_ch->name, vcd_ch->identifier);
+ sr_channel_new(in->sdi, inc->channelcount++, SR_CHANNEL_LOGIC, TRUE, vcd_ch->name);
inc->channels = g_slist_append(inc->channels, vcd_ch);
- inc->channelcount++;
}
g_strfreev(parts);
}
}
+/* Set the channel level depending on the identifier and parsed value. */
+static void process_bit(struct context *inc, char *identifier, unsigned int bit)
+{
+ GSList *l;
+ struct vcd_channel *vcd_ch;
+ unsigned int j;
+
+ for (j = 0, l = inc->channels; j < inc->channelcount && l; j++, l = l->next) {
+ vcd_ch = l->data;
+ if (g_strcmp0(identifier, vcd_ch->identifier) == 0) {
+ /* Found our channel. */
+ size_t byte_idx = (j / 8);
+ size_t bit_idx = j - 8 * byte_idx;
+ if (bit)
+ inc->current_levels[byte_idx] |= (uint8_t)1 << bit_idx;
+ else
+ inc->current_levels[byte_idx] &= ~((uint8_t)1 << bit_idx);
+ break;
+ }
+ }
+ if (j == inc->channelcount)
+ sr_dbg("Did not find channel for identifier '%s'.", identifier);
+}
+
/* Parse a set of lines from the data section. */
static void parse_contents(const struct sr_input *in, char *data)
{
struct context *inc;
- struct vcd_channel *vcd_ch;
- GSList *l;
uint64_t timestamp, prev_timestamp;
- unsigned int bit, i, j;
+ unsigned int bit, i;
char **tokens;
inc = in->priv;
inc->skip_until_end = TRUE;
break;
}
- } else if (strchr("bBrR", tokens[i][0]) != NULL) {
- /* A vector value, not supported yet. */
- break;
+ } else if (strchr("rR", tokens[i][0]) != NULL) {
+ sr_dbg("Real type vector values not supported yet!");
+ if (!tokens[++i])
+ /* No tokens left, bail out */
+ break;
+ else
+ /* Process next token */
+ continue;
+ } else if (strchr("bB", tokens[i][0]) != NULL) {
+ bit = (tokens[i][1] == '1');
+
+ /*
+ * Bail out if a) char after 'b' is NUL, or b) there is
+ * a second character after 'b', or c) there is no
+ * identifier.
+ */
+ if (!tokens[i][1] || tokens[i][2] || !tokens[++i]) {
+ sr_dbg("Unexpected vector format!");
+ break;
+ }
+
+ process_bit(inc, tokens[i], bit);
} else if (strchr("01xXzZ", tokens[i][0]) != NULL) {
+ char *identifier;
+
/* A new 1-bit sample value */
bit = (tokens[i][0] == '1');
* there was whitespace after the bit, the next token.
*/
if (tokens[i][1] == '\0') {
- if (!tokens[++i])
- /* Missing identifier */
- continue;
- } else {
- for (j = 1; tokens[i][j]; j++)
- tokens[i][j - 1] = tokens[i][j];
- tokens[i][j - 1] = '\0';
- }
-
- for (j = 0, l = inc->channels; j < inc->channelcount && l; j++, l = l->next) {
- vcd_ch = l->data;
- if (g_strcmp0(tokens[i], vcd_ch->identifier) == 0) {
- /* Found our channel */
- size_t byte_idx = (j / 8);
- size_t bit_idx = j - 8 * byte_idx;
- if (bit)
- inc->current_levels[byte_idx] |= (uint8_t)1 << bit_idx;
- else
- inc->current_levels[byte_idx] &= ~((uint8_t)1 << bit_idx);
+ if (!tokens[++i]) {
+ sr_dbg("Identifier missing!");
break;
}
+ identifier = tokens[i];
+ } else {
+ identifier = tokens[i] + 1;
}
- if (j == inc->channelcount)
- sr_dbg("Did not find channel for identifier '%s'.", tokens[i]);
+ process_bit(inc, identifier, bit);
} else {
sr_warn("Skipping unknown token '%s'.", tokens[i]);
}
static int init(struct sr_input *in, GHashTable *options)
{
- int num_channels, i;
- char name[16];
struct context *inc;
- num_channels = g_variant_get_int32(g_hash_table_lookup(options, "numchannels"));
- if (num_channels < 1) {
- sr_err("Invalid value for numchannels: must be at least 1.");
- return SR_ERR_ARG;
- }
inc = in->priv = g_malloc0(sizeof(struct context));
- inc->maxchannels = num_channels;
+ inc->maxchannels = g_variant_get_int32(g_hash_table_lookup(options, "numchannels"));
inc->downsample = g_variant_get_int32(g_hash_table_lookup(options, "downsample"));
if (inc->downsample < 1)
inc->downsample = 1;
inc->buffer = g_malloc(CHUNKSIZE);
- for (i = 0; i < num_channels; i++) {
- snprintf(name, 16, "%d", i);
- sr_channel_new(in->sdi, i, SR_CHANNEL_LOGIC, TRUE, name);
- }
-
return SR_OK;
}
static int end(struct sr_input *in)
{
- struct sr_datafeed_packet packet;
struct context *inc;
int ret;
/* Send any samples that haven't been sent yet. */
send_buffer(in);
- if (inc->started) {
- packet.type = SR_DF_END;
- sr_session_send(in->sdi, &packet);
- }
+ if (inc->started)
+ std_session_send_df_end(in->sdi, LOG_PREFIX);
return ret;
}
static const struct sr_option *get_options(void)
{
if (!options[0].def) {
- options[0].def = g_variant_ref_sink(g_variant_new_int32(DEFAULT_NUM_CHANNELS));
+ options[0].def = g_variant_ref_sink(g_variant_new_int32(0));
options[1].def = g_variant_ref_sink(g_variant_new_int32(-1));
options[2].def = g_variant_ref_sink(g_variant_new_int32(1));
options[3].def = g_variant_ref_sink(g_variant_new_int32(0));
projects / libsigrok.git / blobdiff