/*
- * This file is part of the sigrok project.
+ * This file is part of the libsigrok project.
*
* Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de>
*
#include <stdlib.h>
#include <string.h>
#include <glib.h>
-#include "config.h"
+#include "config.h" /* Needed for PACKAGE_STRING and others. */
#include "libsigrok.h"
#include "libsigrok-internal.h"
+#define LOG_PREFIX "output/gnuplot"
+
struct context {
- unsigned int num_enabled_probes;
- unsigned int unitsize;
- char *probelist[SR_MAX_NUM_PROBES + 1];
- char *header;
+ unsigned int num_enabled_channels;
+ uint64_t samplerate;
+ uint64_t samplecount;
+ gboolean header_done;
+ uint8_t *prevsample;
+ int *channel_index;
};
-#define MAX_HEADER_LEN \
- (1024 + (SR_MAX_NUM_PROBES * (SR_MAX_PROBENAME_LEN + 10)))
-
static const char *gnuplot_header = "\
-# Sample data in space-separated columns format usable by gnuplot\n\
-#\n\
-# Generated by: %s on %s%s\
-# Period: %s\n\
-#\n\
-# Column\tProbe\n\
-# -------------------------------------\
-----------------------------------------\n\
-# 0\t\tSample counter (for internal gnuplot purposes)\n%s\n";
-
-static const char *gnuplot_header_comment = "\
-# Comment: Acquisition with %d/%d probes at %s\n";
+# Sample data in space-separated columns format usable by gnuplot.\n";
+static const char *gnuplot_header2 = "\
+#\n# Column\tChannel\n\
+# -----------------------------------------------------------------------------\n\
+# 0\t\tSample counter (for internal gnuplot purposes)\n";
+
static int init(struct sr_output *o)
{
struct context *ctx;
- struct sr_probe *probe;
+ struct sr_channel *ch;
GSList *l;
- uint64_t *samplerate;
unsigned int i;
- int b, num_probes;
- char *c, *frequency_s;
- char wbuf[1000], comment[128];
- time_t t;
-
- if (!o) {
- sr_err("gnuplot out: %s: o was NULL", __func__);
- return SR_ERR_ARG;
- }
-
- if (!o->sdi) {
- sr_err("gnuplot out: %s: o->sdi was NULL", __func__);
- return SR_ERR_ARG;
- }
- if (!o->sdi->driver) {
- sr_err("gnuplot out: %s: o->sdi->driver was NULL", __func__);
+ if (!o || !o->sdi)
return SR_ERR_ARG;
- }
-
- if (!(ctx = g_try_malloc0(sizeof(struct context)))) {
- sr_err("gnuplot out: %s: ctx malloc failed", __func__);
- return SR_ERR_MALLOC;
- }
-
- if (!(ctx->header = g_try_malloc0(MAX_HEADER_LEN + 1))) {
- sr_err("gnuplot out: %s: ctx->header malloc failed", __func__);
- g_free(ctx);
- return SR_ERR_MALLOC;
- }
+ ctx = g_malloc0(sizeof(struct context));
o->internal = ctx;
- ctx->num_enabled_probes = 0;
- for (l = o->sdi->probes; l; l = l->next) {
- probe = l->data; /* TODO: Error checks. */
- if (!probe->enabled)
+ ctx->num_enabled_channels = 0;
+ for (l = o->sdi->channels; l; l = l->next) {
+ ch = l->data;
+ if (ch->type != SR_CHANNEL_LOGIC)
continue;
- ctx->probelist[ctx->num_enabled_probes++] = probe->name;
- }
- ctx->probelist[ctx->num_enabled_probes] = 0;
- ctx->unitsize = (ctx->num_enabled_probes + 7) / 8;
-
- num_probes = g_slist_length(o->sdi->probes);
- comment[0] = '\0';
- if (sr_dev_has_hwcap(o->sdi, SR_HWCAP_SAMPLERATE)) {
- o->sdi->driver->info_get(SR_DI_CUR_SAMPLERATE,
- (const void **)&samplerate, o->sdi);
- if (!(frequency_s = sr_samplerate_string(*samplerate))) {
- sr_err("gnuplot out: %s: sr_samplerate_string failed",
- __func__);
- g_free(ctx->header);
- g_free(ctx);
- return SR_ERR;
- }
- snprintf(comment, 127, gnuplot_header_comment,
- ctx->num_enabled_probes, num_probes, frequency_s);
- g_free(frequency_s);
- }
-
- /* Columns / channels */
- wbuf[0] = '\0';
- for (i = 0; i < ctx->num_enabled_probes; i++) {
- c = (char *)&wbuf + strlen((const char *)&wbuf);
- sprintf(c, "# %d\t\t%s\n", i + 1, ctx->probelist[i]);
+ if (!ch->enabled)
+ continue;
+ ctx->num_enabled_channels++;
}
-
- if (!(frequency_s = sr_period_string(*samplerate))) {
- sr_err("gnuplot out: %s: sr_period_string failed", __func__);
- g_free(ctx->header);
- g_free(ctx);
+ if (ctx->num_enabled_channels <= 0) {
+ sr_err("No logic channel enabled.");
return SR_ERR;
}
+ ctx->channel_index = g_malloc(sizeof(int) * ctx->num_enabled_channels);
- t = time(NULL);
- b = snprintf(ctx->header, MAX_HEADER_LEN, gnuplot_header,
- PACKAGE_STRING, ctime(&t), comment, frequency_s,
- (char *)&wbuf);
- g_free(frequency_s);
-
- if (b < 0) {
- sr_err("gnuplot out: %s: sprintf failed", __func__);
- g_free(ctx->header);
- g_free(ctx);
- return SR_ERR;
+ /* Once more to map the enabled channels. */
+ for (i = 0, l = o->sdi->channels; l; l = l->next) {
+ ch = l->data;
+ if (ch->type != SR_CHANNEL_LOGIC)
+ continue;
+ if (!ch->enabled)
+ continue;
+ ctx->channel_index[i++] = ch->index;
}
- return 0;
+ return SR_OK;
}
-static int event(struct sr_output *o, int event_type, uint8_t **data_out,
- uint64_t *length_out)
+static GString *gen_header(struct sr_output *o)
{
- if (!o) {
- sr_err("gnuplot out: %s: o was NULL", __func__);
- return SR_ERR_ARG;
- }
+ struct context *ctx;
+ struct sr_channel *ch;
+ GVariant *gvar;
+ GString *header;
+ time_t t;
+ unsigned int num_channels, i;
+ char *samplerate_s;
- if (!data_out) {
- sr_err("gnuplot out: %s: data_out was NULL", __func__);
- return SR_ERR_ARG;
+ ctx = o->internal;
+ if (ctx->samplerate == 0) {
+ if (sr_config_get(o->sdi->driver, o->sdi, NULL, SR_CONF_SAMPLERATE,
+ &gvar) == SR_OK) {
+ ctx->samplerate = g_variant_get_uint64(gvar);
+ g_variant_unref(gvar);
+ }
}
- if (!length_out) {
- sr_err("gnuplot out: %s: length_out was NULL", __func__);
- return SR_ERR_ARG;
- }
+ t = time(NULL);
+ header = g_string_sized_new(512);
+ g_string_printf(header, "%s", gnuplot_header);
+ g_string_append_printf(header, "# Generated by %s on %s",
+ PACKAGE_STRING, ctime(&t));
- switch (event_type) {
- case SR_DF_TRIGGER:
- /* TODO: Can a trigger mark be in a gnuplot data file? */
- break;
- case SR_DF_END:
- g_free(o->internal);
- o->internal = NULL;
- break;
- default:
- sr_err("gnuplot out: %s: unsupported event type: %d",
- __func__, event_type);
- break;
+ num_channels = g_slist_length(o->sdi->channels);
+ g_string_append_printf(header, "# Acquisition with %d/%d channels",
+ ctx->num_enabled_channels, num_channels);
+ if (ctx->samplerate != 0) {
+ samplerate_s = sr_samplerate_string(ctx->samplerate);
+ g_string_append_printf(header, " at %s", samplerate_s);
+ g_free(samplerate_s);
}
+ g_string_append_printf(header, "\n");
- *data_out = NULL;
- *length_out = 0;
+ g_string_append_printf(header, "%s", gnuplot_header2);
- return SR_OK;
+ /* Columns / channels */
+ for (i = 0; i < ctx->num_enabled_channels; i++) {
+ ch = g_slist_nth_data(o->sdi->channels, ctx->channel_index[i]);
+ g_string_append_printf(header, "# %d\t\t%s\n", i + 1, ch->name);
+ }
+
+ return header;
}
-static int data(struct sr_output *o, const uint8_t *data_in,
- uint64_t length_in, uint8_t **data_out, uint64_t *length_out)
+static int receive(struct sr_output *o, const struct sr_datafeed_packet *packet,
+ GString **out)
{
+ const struct sr_datafeed_meta *meta;
+ const struct sr_datafeed_logic *logic;
+ const struct sr_config *src;
+ GSList *l;
struct context *ctx;
- unsigned int max_linelen, outsize, p, curbit, i;
- uint64_t sample;
- static uint64_t samplecount = 0, old_sample = 0;
- uint8_t *outbuf, *c;
+ const uint8_t *sample;
+ unsigned int curbit, p, idx, i;
- if (!o) {
- sr_err("gnuplot out: %s: o was NULL", __func__);
- return SR_ERR_ARG;
- }
+ *out = NULL;
+ if (!o || !o->internal)
+ return SR_ERR_BUG;
+ ctx = o->internal;
- if (!o->internal) {
- sr_err("gnuplot out: %s: o->internal was NULL", __func__);
- return SR_ERR_ARG;
+ if (packet->type == SR_DF_META) {
+ meta = packet->payload;
+ for (l = meta->config; l; l = l->next) {
+ src = l->data;
+ if (src->key != SR_CONF_SAMPLERATE)
+ continue;
+ ctx->samplerate = g_variant_get_uint64(src->data);
+ }
}
- if (!data_in) {
- sr_err("gnuplot out: %s: data_in was NULL", __func__);
- return SR_ERR_ARG;
- }
+ if (packet->type != SR_DF_LOGIC)
+ return SR_OK;
+ logic = packet->payload;
- if (!data_out) {
- sr_err("gnuplot out: %s: data_out was NULL", __func__);
- return SR_ERR_ARG;
+ if (!ctx->prevsample) {
+ /* Can't allocate this until we know the stream's unitsize. */
+ ctx->prevsample = g_malloc0(logic->unitsize);
}
- if (!length_out) {
- sr_err("gnuplot out: %s: length_out was NULL", __func__);
- return SR_ERR_ARG;
+ if (!ctx->header_done) {
+ *out = gen_header(o);
+ ctx->header_done = TRUE;
+ } else {
+ *out = g_string_sized_new(512);
}
- ctx = o->internal;
- max_linelen = 16 + ctx->num_enabled_probes * 2;
- outsize = length_in / ctx->unitsize * max_linelen;
- if (ctx->header)
- outsize += strlen(ctx->header);
-
- if (!(outbuf = g_try_malloc0(outsize))) {
- sr_err("gnuplot out: %s: outbuf malloc failed", __func__);
- return SR_ERR_MALLOC;
- }
-
- outbuf[0] = '\0';
- if (ctx->header) {
- /* The header is still here, this must be the first packet. */
- strncpy((char *)outbuf, ctx->header, outsize);
- g_free(ctx->header);
- ctx->header = NULL;
- }
-
- for (i = 0; i <= length_in - ctx->unitsize; i += ctx->unitsize) {
-
- memcpy(&sample, data_in + i, ctx->unitsize);
+ for (i = 0; i <= logic->length - logic->unitsize; i += logic->unitsize) {
+ sample = logic->data + i;
+ ctx->samplecount++;
/*
- * Don't output the same samples multiple times. However, make
+ * Don't output the same sample multiple times, but make
* sure to output at least the first and last sample.
*/
- if (samplecount++ != 0 && sample == old_sample) {
- if (i != (length_in - ctx->unitsize))
+ if (i > 0 && i < logic->length - logic->unitsize) {
+ if (!memcmp(sample, ctx->prevsample, logic->unitsize))
continue;
}
- old_sample = sample;
+ memcpy(ctx->prevsample, sample, logic->unitsize);
/* The first column is a counter (needed for gnuplot). */
- c = outbuf + strlen((const char *)outbuf);
- sprintf((char *)c, "%" PRIu64 "\t", samplecount++);
+ g_string_append_printf(*out, "%" PRIu64 "\t", ctx->samplecount);
/* The next columns are the values of all channels. */
- for (p = 0; p < ctx->num_enabled_probes; p++) {
- curbit = (sample & ((uint64_t) (1 << p))) >> p;
- c = outbuf + strlen((const char *)outbuf);
- sprintf((char *)c, "%d ", curbit);
+ for (p = 0; p < ctx->num_enabled_channels; p++) {
+ idx = ctx->channel_index[p];
+ curbit = (sample[idx / 8] & ((uint8_t) (1 << (idx % 8)))) >> (idx % 8);
+ g_string_append_printf(*out, "%d ", curbit);
}
-
- c = outbuf + strlen((const char *)outbuf);
- sprintf((char *)c, "\n");
+ g_string_append_printf(*out, "\n");
}
- *data_out = outbuf;
- *length_out = strlen((const char *)outbuf);
-
return SR_OK;
}
-SR_PRIV struct sr_output_format output_gnuplot = {
- .id = "gnuplot",
- .description = "Gnuplot",
- .df_type = SR_DF_LOGIC,
- .init = init,
- .data = data,
- .event = event,
-};
-
-/* Temporarily disabled. */
-#if 0
-static int analog_init(struct sr_output *o)
+static int cleanup(struct sr_output *o)
{
struct context *ctx;
- struct sr_probe *probe;
- GSList *l;
- uint64_t samplerate;
- unsigned int i;
- int b, num_probes;
- char *c, *frequency_s;
- char wbuf[1000], comment[128];
- time_t t;
-
- if (!(ctx = g_try_malloc0(sizeof(struct context)))) {
- sr_err("gnuplot out: %s: ctx malloc failed", __func__);
- return SR_ERR_MALLOC;
- }
-
- if (!(ctx->header = g_try_malloc0(MAX_HEADER_LEN + 1))) {
- g_free(ctx);
- sr_err("gnuplot out: %s: ctx->header malloc failed", __func__);
- return SR_ERR_MALLOC;
- }
-
- o->internal = ctx;
- ctx->num_enabled_probes = 0;
- for (l = o->dev->probes; l; l = l->next) {
- probe = l->data;
- if (!probe->enabled)
- continue;
- ctx->probelist[ctx->num_enabled_probes++] = probe->name;
- }
- ctx->probelist[ctx->num_enabled_probes] = 0;
-// ctx->unitsize = (ctx->num_enabled_probes + 7) / 8;
- ctx->unitsize = sizeof(struct sr_analog_sample) +
- (ctx->num_enabled_probes * sizeof(struct sr_analog_probe));
-
- num_probes = g_slist_length(o->dev->probes);
- comment[0] = '\0';
- if (o->dev->driver && sr_dev_has_hwcap(o->dev, SR_HWCAP_SAMPLERATE)) {
- samplerate = *((uint64_t *) o->dev->driver->dev_info_get(
- o->dev->driver_index, SR_DI_CUR_SAMPLERATE));
- if (!(frequency_s = sr_samplerate_string(samplerate))) {
- g_free(ctx->header);
- g_free(ctx);
- return SR_ERR;
- }
- snprintf(comment, 127, gnuplot_header_comment,
- ctx->num_enabled_probes, num_probes, frequency_s);
- g_free(frequency_s);
- }
-
- /* Columns / channels */
- wbuf[0] = '\0';
- for (i = 0; i < ctx->num_enabled_probes; i++) {
- c = (char *)&wbuf + strlen((char *)&wbuf);
- sprintf(c, "# %d\t\t%s\n", i + 1, ctx->probelist[i]);
- }
-
- if (!(frequency_s = sr_period_string(samplerate))) {
- g_free(ctx->header);
- g_free(ctx);
- return SR_ERR;
- }
- t = time(NULL);
- b = snprintf(ctx->header, MAX_HEADER_LEN, gnuplot_header,
- PACKAGE_STRING, ctime(&t), comment, frequency_s,
- (char *)&wbuf);
- g_free(frequency_s);
-
- if (b < 0) {
- g_free(ctx->header);
- g_free(ctx);
- return SR_ERR;
- }
-
- return 0;
-}
-
-static int analog_data(struct sr_output *o, uint8_t *data_in,
- uint64_t length_in, uint8_t **data_out,
- uint64_t *length_out)
-{
- struct context *ctx;
- unsigned int max_linelen, outsize, p, /* curbit, */ i;
-// uint64_t sample;
- static uint64_t samplecount = 0;
- uint8_t *outbuf, *c;
- struct sr_analog_sample *sample;
+ if (!o || !o->internal)
+ return SR_ERR_BUG;
ctx = o->internal;
-// max_linelen = 16 + ctx->num_enabled_probes * 2;
- max_linelen = 16 + ctx->num_enabled_probes * 30;
- outsize = length_in / ctx->unitsize * max_linelen;
- if (ctx->header)
- outsize += strlen(ctx->header);
-
- if (!(outbuf = g_try_malloc0(outsize))) {
- sr_err("gnuplot out: %s: outbuf malloc failed", __func__);
- return SR_ERR_MALLOC;
- }
-
- outbuf[0] = '\0';
- if (ctx->header) {
- /* The header is still here, this must be the first packet. */
- strncpy(outbuf, ctx->header, outsize);
- g_free(ctx->header);
- ctx->header = NULL;
- }
-
- for (i = 0; i <= length_in - ctx->unitsize; i += ctx->unitsize) {
-// memcpy(&sample, data_in + i, ctx->unitsize);
- sample = (struct sr_analog_sample *) (data_in + i);
-
- /* The first column is a counter (needed for gnuplot). */
- c = outbuf + strlen(outbuf);
- sprintf(c, "%" PRIu64 "\t", samplecount++);
-
- /* The next columns are the values of all channels. */
- for (p = 0; p < ctx->num_enabled_probes; p++) {
-// curbit = (sample & ((uint64_t) (1 << p))) >> p;
- c = outbuf + strlen(outbuf);
-// sprintf(c, "%d ", curbit);
- /*
- * FIXME: Should be doing proper raw->voltage conversion
- * here, casting to int16_t isn't it. Remember that if
- * res = 1 conversion isn't necessary.
- */
- sprintf(c, "%f ", (double) ((int16_t) (sample->probes[p].val &
- ((1 << sample->probes[p].res) - 1))));
- }
-
- c = outbuf + strlen(outbuf);
- sprintf(c, "\n");
- }
-
- *data_out = outbuf;
- *length_out = strlen(outbuf);
+ g_free(ctx->channel_index);
+ g_free(ctx->prevsample);
+ g_free(ctx);
return SR_OK;
}
-struct sr_output_format output_analog_gnuplot = {
- .id = "analog_gnuplot",
- .description = "Gnuplot analog",
- .df_type = SR_DF_ANALOG,
- .init = analog_init,
- .data = analog_data,
- .event = event,
+SR_PRIV struct sr_output_format output_gnuplot = {
+ .id = "gnuplot",
+ .description = "Gnuplot",
+ .init = init,
+ .receive = receive,
+ .cleanup = cleanup,
};
-#endif
projects / libsigrok.git / blobdiff