* - analog, integer and real number variables
* - $dumpvars initial value declaration
* - $scope namespaces
+ * - more than 64 probes
*/
-/* */
-
#include <stdlib.h>
#include <glib.h>
#include <stdio.h>
#define sr_err(s, args...) sr_err(LOG_PREFIX s, ## args)
#define DEFAULT_NUM_PROBES 8
+#define CHUNKSIZE 1024
+
+struct context {
+ uint64_t samplerate;
+ int maxprobes;
+ int probecount;
+ int downsample;
+ unsigned compress;
+ int64_t skip;
+ GSList *probes;
+};
+
+struct probe {
+ gchar *name;
+ gchar *identifier;
+};
+
/* Read until specific type of character occurs in file.
* Skip input if dest is NULL.
{
char prev[4] = "";
long startpos = ftell(file);
- for(;;)
- {
+ for(;;) {
int c = fgetc(file);
- if (c == EOF)
- {
+ if (c == EOF) {
if (mode == '$')
sr_err("Unexpected EOF, read started at %ld.", startpos);
return FALSE;
if (mode == 'W' && g_ascii_isspace(c))
return TRUE;
- if (mode == 'N' && !g_ascii_isspace(c))
- {
+ if (mode == 'N' && !g_ascii_isspace(c)) {
ungetc(c, file);
return TRUE;
}
- if (mode == '$')
- {
+ if (mode == '$') {
prev[0] = prev[1]; prev[1] = prev[2]; prev[2] = prev[3]; prev[3] = c;
- if (prev[0] == '$' && prev[1] == 'e' && prev[2] == 'n' && prev[3] == 'd')
- {
+ if (prev[0] == '$' && prev[1] == 'e' && prev[2] == 'n' && prev[3] == 'd') {
if (dest != NULL)
g_string_truncate(dest, dest->len - 3);
}
}
-/* Reads a single VCD section from input file and parses it to structure.
+/*
+ * Reads a single VCD section from input file and parses it to structure.
* e.g. $timescale 1ps $end => "timescale" "1ps"
*/
static gboolean parse_section(FILE *file, gchar **name, gchar **contents)
if (!read_until(file, NULL, 'N')) return FALSE;
/* Section tag should start with $. */
- if (fgetc(file) != '$')
- {
+ if (fgetc(file) != '$') {
sr_err("Expected $ at beginning of section.");
return FALSE;
}
return status;
}
-struct probe
-{
- gchar *name;
- gchar *identifier;
-};
-
-struct context
-{
- uint64_t samplerate;
- int maxprobes;
- int probecount;
- int downsample;
- unsigned compress;
- int64_t skip;
- GSList *probes;
-};
-
static void free_probe(void *data)
{
struct probe *probe = data;
{
gchar **src = parts;
gchar **dest = parts;
- while (*src != NULL)
- {
+ while (*src != NULL) {
if (**src != '\0')
- {
*dest++ = *src;
- }
-
src++;
}
*dest = NULL;
}
-/* Parse VCD header to get values for context structure.
+/*
+ * Parse VCD header to get values for context structure.
* The context structure should be zeroed before calling this.
*/
static gboolean parse_header(FILE *file, struct context *ctx)
gboolean status = FALSE;
struct probe *probe;
- while (parse_section(file, &name, &contents))
- {
+ while (parse_section(file, &name, &contents)) {
sr_dbg("Section '%s', contents '%s'.", name, contents);
- if (g_strcmp0(name, "enddefinitions") == 0)
- {
+ if (g_strcmp0(name, "enddefinitions") == 0) {
status = TRUE;
break;
- }
- else if (g_strcmp0(name, "timescale") == 0)
- {
- /* The standard allows for values 1, 10 or 100
- * and units s, ms, us, ns, ps and fs. */
- if (sr_parse_period(contents, &p, &q) == SR_OK)
- {
+ } else if (g_strcmp0(name, "timescale") == 0) {
+ /*
+ * The standard allows for values 1, 10 or 100
+ * and units s, ms, us, ns, ps and fs.
+ * */
+ if (sr_parse_period(contents, &p, &q) == SR_OK) {
ctx->samplerate = q / p;
- if (q % p != 0)
- {
+ if (q % p != 0) {
/* Does not happen unless time value is non-standard */
sr_warn("Inexact rounding of samplerate, %" PRIu64 " / %" PRIu64 " to %" PRIu64 " Hz.",
q, p, ctx->samplerate);
}
sr_dbg("Samplerate: %" PRIu64, ctx->samplerate);
- }
- else
- {
+ } else {
sr_err("Parsing timescale failed.");
}
- }
- else if (g_strcmp0(name, "var") == 0)
- {
+ } else if (g_strcmp0(name, "var") == 0) {
/* Format: $var type size identifier reference $end */
gchar **parts = g_strsplit_set(contents, " \r\n\t", 0);
remove_empty_parts(parts);
if (g_strv_length(parts) != 4)
- {
sr_warn("$var section should have 4 items");
- }
else if (g_strcmp0(parts[0], "reg") != 0 && g_strcmp0(parts[0], "wire") != 0)
- {
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 (ctx->probecount >= ctx->maxprobes)
- {
sr_warn("Skipping '%s' because only %d probes requested.", parts[3], ctx->maxprobes);
- }
- else
- {
+ else {
sr_info("Probe %d is '%s' identified by '%s'.", ctx->probecount, parts[3], parts[2]);
probe = g_malloc(sizeof(struct probe));
probe->identifier = g_strdup(parts[2]);
if (file == NULL)
return FALSE;
- /* If we can parse the first section correctly,
+ /*
+ * If we can parse the first section correctly,
* then it is assumed to be a VCD file.
*/
status = parse_section(file, &name, &contents);
param = g_hash_table_lookup(in->param, "numprobes");
if (param) {
num_probes = strtoul(param, NULL, 10);
- if (num_probes < 1)
- {
+ if (num_probes < 1) {
release_context(ctx);
return SR_ERR;
}
if (param) {
ctx->downsample = strtoul(param, NULL, 10);
if (ctx->downsample < 1)
- {
ctx->downsample = 1;
- }
}
param = g_hash_table_lookup(in->param, "compress");
- if (param) {
+ if (param)
ctx->compress = strtoul(param, NULL, 10);
- }
param = g_hash_table_lookup(in->param, "skip");
- if (param) {
+ if (param)
ctx->skip = strtoul(param, NULL, 10) / ctx->downsample;
- }
}
/* Maximum number of probes to parse from the VCD */
for (i = 0; i < num_probes; i++) {
snprintf(name, SR_MAX_PROBENAME_LEN, "%d", i);
- if (!(probe = sr_probe_new(i, SR_PROBE_LOGIC, TRUE, name)))
- {
+ if (!(probe = sr_probe_new(i, SR_PROBE_LOGIC, TRUE, name))) {
release_context(ctx);
return SR_ERR;
}
return SR_OK;
}
-#define CHUNKSIZE 1024
-
/* Send N samples of the given value. */
static void send_samples(const struct sr_dev_inst *sdi, uint64_t sample, uint64_t count)
{
chunksize = count;
for (i = 0; i < chunksize; i++)
- {
buffer[i] = sample;
- }
packet.type = SR_DF_LOGIC;
packet.payload = &logic;
logic.unitsize = sizeof(uint64_t);
logic.data = buffer;
- while (count)
- {
+ while (count) {
if (count < chunksize)
chunksize = count;
uint64_t prev_values = 0;
/* Read one space-delimited token at a time. */
- while (read_until(file, NULL, 'N') && read_until(file, token, 'W'))
- {
- if (token->str[0] == '#' && g_ascii_isdigit(token->str[1]))
- {
+ while (read_until(file, NULL, 'N') && read_until(file, token, 'W')) {
+ if (token->str[0] == '#' && g_ascii_isdigit(token->str[1])) {
/* Numeric value beginning with # is a new timestamp value */
uint64_t timestamp;
timestamp = strtoull(token->str + 1, NULL, 10);
if (ctx->downsample > 1)
timestamp /= ctx->downsample;
- /* Skip < 0 => skip until first timestamp.
+ /*
+ * Skip < 0 => skip until first timestamp.
* Skip = 0 => don't skip
* Skip > 0 => skip until timestamp >= skip.
*/
- if (ctx->skip < 0)
- {
+ if (ctx->skip < 0) {
ctx->skip = timestamp;
prev_timestamp = timestamp;
- }
- else if (ctx->skip > 0 && timestamp < (uint64_t)ctx->skip)
- {
+ } else if (ctx->skip > 0 && timestamp < (uint64_t)ctx->skip) {
prev_timestamp = ctx->skip;
}
- else if (timestamp == prev_timestamp)
- {
+ else if (timestamp == prev_timestamp) {
/* Ignore repeated timestamps (e.g. sigrok outputs these) */
}
- else
- {
+ else {
if (ctx->compress != 0 && timestamp - prev_timestamp > ctx->compress)
{
/* Compress long idle periods */
send_samples(sdi, prev_values, timestamp - prev_timestamp);
prev_timestamp = timestamp;
}
- }
- else if (token->str[0] == '$' && token->len > 1)
- {
+ } else if (token->str[0] == '$' && token->len > 1) {
/* This is probably a $dumpvars, $comment or similar.
* $dump* contain useful data, but other tags will be skipped until $end. */
- if (g_strcmp0(token->str, "$dumpvars") == 0 ||
- g_strcmp0(token->str, "$dumpon") == 0 ||
- g_strcmp0(token->str, "$dumpoff") == 0 ||
- g_strcmp0(token->str, "$end") == 0)
- {
+ if (g_strcmp0(token->str, "$dumpvars") == 0
+ || g_strcmp0(token->str, "$dumpon") == 0
+ || g_strcmp0(token->str, "$dumpoff") == 0
+ || g_strcmp0(token->str, "$end") == 0) {
/* Ignore, parse contents as normally. */
- }
- else
- {
+ } else {
/* Skip until $end */
read_until(file, NULL, '$');
}
}
- else if (strchr("bBrR", token->str[0]) != NULL)
- {
+ else if (strchr("bBrR", token->str[0]) != NULL) {
/* A vector value. Skip it and also the following identifier. */
read_until(file, NULL, 'N');
read_until(file, NULL, 'W');
- }
- else if (strchr("01xXzZ", token->str[0]) != NULL)
- {
+ } else if (strchr("01xXzZ", token->str[0]) != NULL) {
/* A new 1-bit sample value */
int i, bit;
GSList *l;
bit = (token->str[0] == '1');
g_string_erase(token, 0, 1);
- if (token->len == 0)
- {
+ if (token->len == 0) {
/* There was a space between value and identifier.
* Read in the rest.
*/
read_until(file, token, 'W');
}
- for (i = 0, l = ctx->probes; i < ctx->probecount && l; i++, l = l->next)
- {
+ for (i = 0, l = ctx->probes; i < ctx->probecount && l; i++, l = l->next) {
probe = l->data;
- if (g_strcmp0(token->str, probe->identifier) == 0)
- {
+ if (g_strcmp0(token->str, probe->identifier) == 0) {
sr_dbg("Probe %d new value %d.", i, bit);
/* Found our probe */
}
if (i == ctx->probecount)
- {
sr_dbg("Did not find probe for identifier '%s'.", token->str);
- }
- }
- else
- {
+ } else {
sr_warn("Skipping unknown token '%s'.", token->str);
}
if ((file = fopen(filename, "r")) == NULL)
return SR_ERR;
- if (!parse_header(file, ctx))
- {
+ if (!parse_header(file, ctx)) {
sr_err("VCD parsing failed");
fclose(file);
return SR_ERR;
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