--- /dev/null
+/*
+ * This file is part of the sigrok project.
+ *
+ * Copyright (C) 2011 Bert Vermeulen <bert@biot.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sigrok.h>
+#include <config.h>
+
+
+/* -10.25 */
+#define VALUE_LEN 6
+
+struct context {
+ char *header;
+ unsigned int num_enabled_probes;
+ char *probelist[MAX_NUM_PROBES];
+ int samples_per_line;
+ unsigned int unitsize;
+ int line_offset;
+ int linebuf_len;
+ char *linebuf;
+ int spl_cnt;
+ int mark_trigger;
+};
+
+
+static void flush_linebufs(struct context *ctx, char *outbuf)
+{
+ static int max_probename_len = 0;
+ int len, i;
+
+ if (ctx->linebuf[0] == 0)
+ return;
+
+ if (max_probename_len == 0) {
+ /* First time through... */
+ for (i = 0; ctx->probelist[i]; i++) {
+ len = strlen(ctx->probelist[i]);
+ if (len > max_probename_len)
+ max_probename_len = len;
+ }
+ }
+
+ for (i = 0; ctx->probelist[i]; i++) {
+ sprintf(outbuf + strlen(outbuf), "%*s:%s\n", max_probename_len,
+ ctx->probelist[i], ctx->linebuf + i * ctx->linebuf_len);
+ }
+
+ /* Mark trigger with a ^ character. */
+ if (ctx->mark_trigger != -1)
+ sprintf(outbuf + strlen(outbuf), "T:%*s^\n",
+ ctx->mark_trigger * (VALUE_LEN+1), "");
+
+ memset(ctx->linebuf, 0, i * ctx->linebuf_len);
+}
+
+static int init(struct output *o)
+{
+ struct context *ctx;
+ struct probe *probe;
+ GSList *l;
+ uint64_t samplerate;
+ int num_probes;
+ char *samplerate_s;
+
+ if (!(ctx = calloc(1, sizeof(struct context))))
+ return SIGROK_ERR_MALLOC;
+
+ if (!(ctx->header = malloc(512))) {
+ free(ctx);
+ return SIGROK_ERR_MALLOC;
+ }
+
+ o->internal = ctx;
+ ctx->samples_per_line = 5;
+ ctx->num_enabled_probes = 0;
+ ctx->mark_trigger = -1;
+ for (l = o->device->probes; l; l = l->next) {
+ probe = l->data;
+ if (!probe->enabled)
+ continue;
+ ctx->probelist[ctx->num_enabled_probes++] = probe->name;
+ }
+ ctx->unitsize = sizeof(double) * ctx->num_enabled_probes;
+
+ snprintf(ctx->header, 511, "%s\n", PACKAGE_STRING);
+ if (o->device->plugin) {
+ num_probes = g_slist_length(o->device->probes);
+ samplerate = *((uint64_t *) o->device->plugin->get_device_info(
+ o->device->plugin_index, DI_CUR_SAMPLERATE));
+ if (!(samplerate_s = sigrok_samplerate_string(samplerate))) {
+ free(ctx->header);
+ free(ctx);
+ return SIGROK_ERR;
+ }
+ snprintf(ctx->header + strlen(ctx->header),
+ 511 - strlen(ctx->header),
+ "Acquisition with %d/%d probes at %s\n",
+ ctx->num_enabled_probes, num_probes, samplerate_s);
+ free(samplerate_s);
+ }
+
+ ctx->linebuf_len = MAX_PROBENAME_LEN + ctx->samples_per_line * VALUE_LEN
+ + ctx->samples_per_line + 4;
+ if (!(ctx->linebuf = calloc(1, ctx->num_enabled_probes * ctx->linebuf_len))) {
+ free(ctx->header);
+ free(ctx);
+ return SIGROK_ERR_MALLOC;
+ }
+
+ return 0;
+}
+
+static int data(struct output *o, char *data_in, uint64_t length_in,
+ char **data_out, uint64_t *length_out)
+{
+ struct context *ctx;
+ double probe_sample;
+ unsigned int max_linelen, outsize, offset, p;
+ char *outbuf, s[VALUE_LEN+2];
+
+ ctx = o->internal;
+ max_linelen = MAX_PROBENAME_LEN + 3 + ctx->samples_per_line * VALUE_LEN
+ + ctx->samples_per_line / 8;
+ outsize = length_in / ctx->unitsize * ctx->num_enabled_probes
+ / ctx->samples_per_line * max_linelen + 512;
+ if (!(outbuf = calloc(1, outsize + 1)))
+ return SIGROK_ERR_MALLOC;
+
+ outbuf[0] = '\0';
+ if (ctx->header) {
+ /* The header is still here, this must be the first packet. */
+ strncpy(outbuf, ctx->header, outsize);
+ free(ctx->header);
+ ctx->header = NULL;
+ }
+
+ if (length_in >= ctx->unitsize) {
+ for (offset = 0; offset <= length_in - ctx->unitsize;
+ offset += ctx->unitsize) {
+ for (p = 0; p < ctx->num_enabled_probes; p++) {
+ memcpy(&probe_sample, data_in + offset * p, sizeof(double));
+ snprintf(s, VALUE_LEN+2, "% 6.2f ", probe_sample);
+ strcat(ctx->linebuf + p * ctx->linebuf_len + ctx->line_offset, s);
+ ctx->line_offset += strlen(s);
+ ctx->spl_cnt++;
+ }
+
+ /* End of line. */
+ if (ctx->spl_cnt >= ctx->samples_per_line) {
+ flush_linebufs(ctx, outbuf);
+ ctx->line_offset = ctx->spl_cnt = 0;
+ ctx->mark_trigger = -1;
+ }
+
+
+ }
+ } else {
+ g_message("short buffer (length_in=%" PRIu64 ")", length_in);
+ }
+
+ *data_out = outbuf;
+ *length_out = strlen(outbuf);
+
+ return SIGROK_OK;
+}
+
+static int event(struct output *o, int event_type, char **data_out,
+ uint64_t *length_out)
+{
+ struct context *ctx;
+
+ ctx = o->internal;
+ switch (event_type) {
+ case DF_TRIGGER:
+ ctx->mark_trigger = ctx->spl_cnt;
+ break;
+ case DF_END:
+ if (ctx->header)
+ free(ctx->header);
+ free(ctx->linebuf);
+ free(o->internal);
+ o->internal = NULL;
+ break;
+ }
+
+ *data_out = NULL;
+ *length_out = 0;
+
+ return SIGROK_OK;
+}
+
+struct output_format output_analog = {
+ "analog",
+ "Analog data",
+ DF_ANALOG,
+ init,
+ data,
+ event,
+};
+
projects / libsigrok.git / commitdiff