Doxyfile: Set version to 0.4.0.

[libsigrok.git] / src / input / vcd.c

diff --git a/src/input/vcd.c b/src/input/vcd.c
index 88e17f8b8ba4fb23c622edd81574d18fea64d8d5..66f126b422ed8c0f1521b14d0dcf324813b34459 100644 (file)
--- a/src/input/vcd.c
+++ b/src/input/vcd.c
@@ -67,7 +67,6 @@
 
 #define LOG_PREFIX "input/vcd"
 
-#define DEFAULT_NUM_CHANNELS 8
 #define CHUNKSIZE (1024 * 1024)
 
 struct context {
@@ -219,7 +218,7 @@ static gboolean parse_header(const struct sr_input *in, GString *buf)
                                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 {
@@ -233,8 +232,8 @@ static gboolean parse_header(const struct sr_input *in, GString *buf)
                                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);
@@ -336,14 +335,36 @@ static void add_samples(const struct sr_input *in, size_t count)
        }
 }
 
+/* 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;
@@ -406,14 +427,28 @@ static void parse_contents(const struct sr_input *in, char *data)
                                inc->skip_until_end = TRUE;
                                break;
                        }
-               } else if (strchr("bBrR", tokens[i][0]) != NULL) {
-                       sr_dbg("Vector values not supported yet");
+               } 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;
 
@@ -433,22 +468,7 @@ static void parse_contents(const struct sr_input *in, char *data)
                        } else {
                                identifier = tokens[i] + 1;
                        }
-
-                       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);
+                       process_bit(inc, identifier, bit);
                } else {
                        sr_warn("Skipping unknown token '%s'.", tokens[i]);
                }
@@ -458,18 +478,11 @@ static void parse_contents(const struct sr_input *in, char *data)
 
 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;
@@ -483,11 +496,6 @@ static int init(struct sr_input *in, GHashTable *options)
 
        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;
 }
 
@@ -615,7 +623,7 @@ static struct sr_option options[] = {
 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));