--- /dev/null
+/*
+ * This file is part of the libsigrok project.
+ *
+ * Copyright (C) 2014 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 <stdlib.h>
+#include <string.h>
+#include <glib.h>
+#include "libsigrok.h"
+#include "libsigrok-internal.h"
+
+#define LOG_PREFIX "output/hex"
+
+#define DEFAULT_SAMPLES_PER_LINE 192
+
+struct context {
+ unsigned int num_enabled_channels;
+ int samples_per_line;
+ int bit_cnt;
+ int spl_cnt;
+ int trigger;
+ int *channel_index;
+ char **channel_names;
+ char **line_values;
+ uint8_t *sample_buf;
+ GString **lines;
+ GString *header;
+};
+
+static int init(struct sr_output *o)
+{
+ struct context *ctx;
+ struct sr_channel *ch;
+ GSList *l;
+ GVariant *gvar;
+ uint64_t samplerate;
+ unsigned int i, j;
+ int spl, num_channels;
+ char *samplerate_s;
+
+ if (!o || !o->sdi)
+ return SR_ERR_ARG;
+ ctx = g_malloc0(sizeof(struct context));
+ o->internal = ctx;
+ ctx->trigger = -1;
+
+ if (o->param && o->param[0]) {
+ if ((spl = strtoul(o->param, NULL, 10)) < 1)
+ return SR_ERR_ARG;
+ } else
+ spl = DEFAULT_SAMPLES_PER_LINE;
+ ctx->samples_per_line = spl;
+
+ for (l = o->sdi->channels; l; l = l->next) {
+ ch = l->data;
+ if (ch->type != SR_CHANNEL_LOGIC)
+ continue;
+ if (!ch->enabled)
+ continue;
+ ctx->num_enabled_channels++;
+ }
+ ctx->channel_index = g_malloc(sizeof(int) * ctx->num_enabled_channels);
+ ctx->channel_names = g_malloc(sizeof(char *) * ctx->num_enabled_channels);
+ ctx->lines = g_malloc(sizeof(GString *) * ctx->num_enabled_channels);
+ ctx->sample_buf = g_malloc(ctx->num_enabled_channels);
+
+ j = 0;
+ for (i = 0, l = o->sdi->channels; l; l = l->next, i++) {
+ ch = l->data;
+ if (ch->type != SR_CHANNEL_LOGIC)
+ continue;
+ if (!ch->enabled)
+ continue;
+ ctx->channel_index[j] = ch->index;
+ ctx->channel_names[j] = ch->name;
+ ctx->lines[j] = g_string_sized_new(80);
+ ctx->sample_buf[j] = 0;
+ g_string_printf(ctx->lines[j], "%s:", ch->name);
+ j++;
+ }
+
+ ctx->header = g_string_sized_new(512);
+ g_string_printf(ctx->header, "%s\n", PACKAGE_STRING);
+ num_channels = g_slist_length(o->sdi->channels);
+ if (sr_config_get(o->sdi->driver, o->sdi, NULL, SR_CONF_SAMPLERATE,
+ &gvar) == SR_OK) {
+ samplerate = g_variant_get_uint64(gvar);
+ samplerate_s = sr_samplerate_string(samplerate);
+ g_string_append_printf(ctx->header, "Acquisition with %d/%d channels at %s\n",
+ ctx->num_enabled_channels, num_channels, samplerate_s);
+ g_free(samplerate_s);
+ g_variant_unref(gvar);
+ }
+
+ return SR_OK;
+}
+
+static int receive(struct sr_output *o, const struct sr_dev_inst *sdi,
+ const struct sr_datafeed_packet *packet, GString **out)
+{
+ const struct sr_datafeed_logic *logic;
+ struct context *ctx;
+ int idx, pos, offset;
+ uint64_t i, j;
+ gchar *p;
+
+ (void)sdi;
+
+ *out = NULL;
+ if (!o || !o->sdi)
+ return SR_ERR_ARG;
+ if (!(ctx = o->internal))
+ return SR_ERR_ARG;
+
+ switch (packet->type) {
+ case SR_DF_TRIGGER:
+ ctx->trigger = ctx->spl_cnt;
+ break;
+ case SR_DF_LOGIC:
+ if (ctx->header) {
+ /* The header is still here, this must be the first packet. */
+ *out = ctx->header;
+ ctx->header = NULL;
+ } else
+ *out = g_string_sized_new(512);
+
+ logic = packet->payload;
+ for (i = 0; i <= logic->length - logic->unitsize; i += logic->unitsize) {
+ ctx->spl_cnt++;
+ pos = ctx->spl_cnt & 7;
+ for (j = 0; j < ctx->num_enabled_channels; j++) {
+ idx = ctx->channel_index[j];
+ p = logic->data + i + idx / 8;
+ ctx->sample_buf[j] <<= 1;
+ if (*p & (1 << (idx % 8)))
+ ctx->sample_buf[j] |= 1;
+ if (ctx->spl_cnt && pos == 0) {
+ /* Buffered a byte's worth, output hex. */
+ g_string_append_printf(ctx->lines[j], "%.2x ",
+ ctx->sample_buf[j]);
+ ctx->sample_buf[j] = 0;
+ }
+
+ if (ctx->spl_cnt == ctx->samples_per_line) {
+ /* Flush line buffers. */
+ g_string_append_len(*out, ctx->lines[j]->str, ctx->lines[j]->len);
+ g_string_append_c(*out, '\n');
+ if (j == ctx->num_enabled_channels - 1 && ctx->trigger > -1) {
+ offset = ctx->trigger + ctx->trigger / 8;
+ g_string_append_printf(*out, "T:%*s^ %d\n", offset, "", ctx->trigger);
+ ctx->trigger = -1;
+ }
+ g_string_printf(ctx->lines[j], "%s:", ctx->channel_names[j]);
+ }
+ }
+ if (ctx->spl_cnt == ctx->samples_per_line)
+ /* Line buffers were already flushed. */
+ ctx->spl_cnt = 0;
+ }
+ break;
+ case SR_DF_END:
+ if (ctx->spl_cnt) {
+ /* Line buffers need flushing. */
+ *out = g_string_sized_new(512);
+ for (i = 0; i < ctx->num_enabled_channels; i++) {
+ if (ctx->spl_cnt & 7)
+ g_string_append_printf(ctx->lines[i], "%.2x ",
+ ctx->sample_buf[i] << (8 - (ctx->spl_cnt & 7)));
+ g_string_append_len(*out, ctx->lines[i]->str, ctx->lines[i]->len);
+ g_string_append_c(*out, '\n');
+ }
+ }
+ break;
+ }
+
+ return SR_OK;
+}
+
+static int cleanup(struct sr_output *o)
+{
+ struct context *ctx;
+ unsigned int i;
+
+ if (!o)
+ return SR_ERR_ARG;
+
+ if (!(ctx = o->internal))
+ return SR_OK;
+
+ g_free(ctx->header);
+ g_free(ctx->channel_index);
+ g_free(ctx->sample_buf);
+ g_free(ctx->channel_names);
+ for (i = 0; i < ctx->num_enabled_channels; i++)
+ g_string_free(ctx->lines[i], TRUE);
+ g_free(ctx->lines);
+ if (ctx->header)
+ g_string_free(ctx->header, TRUE);
+ g_free(ctx);
+ o->internal = NULL;
+
+ return SR_OK;
+}
+
+SR_PRIV struct sr_output_format output_hex = {
+ .id = "hex",
+ .description = "Hexadecimal",
+ .init = init,
+ .receive = receive,
+ .cleanup = cleanup,
+};
+
projects / libsigrok.git / blobdiff