/* * This file is part of the libsigrok project. * * Copyright (C) 2011 Håvard Espeland * Copyright (C) 2014 Bert Vermeulen * * 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 . */ #include #include #include #include "libsigrok.h" #include "libsigrok-internal.h" #define LOG_PREFIX "output/hex" #define DEFAULT_SAMPLES_PER_LINE 74 struct context { unsigned int num_enabled_channels; int samples_per_line; int bit_cnt; int spl_cnt; int trigger; uint64_t samplerate; int *channel_index; char **channel_names; char **line_values; uint8_t *prev_sample; gboolean header_done; GString **lines; GString *header; }; static int init(struct sr_output *o) { struct context *ctx; struct sr_channel *ch; GSList *l; GHashTableIter iter; gpointer key, value; unsigned int i, j; int spl; if (!o || !o->sdi) return SR_ERR_ARG; spl = DEFAULT_SAMPLES_PER_LINE; g_hash_table_iter_init(&iter, o->params); while (g_hash_table_iter_next(&iter, &key, &value)) { if (!strcmp(key, "width")) { if ((spl = strtoul(value, NULL, 10)) < 1) { sr_err("Invalid width."); return SR_ERR_ARG; } } else { sr_err("Unknown parameter '%s'.", key); return SR_ERR_ARG; } } ctx = g_malloc0(sizeof(struct context)); o->internal = ctx; ctx->trigger = -1; 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->prev_sample = g_malloc(g_slist_length(o->sdi->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); g_string_printf(ctx->lines[j], "%s:", ch->name); j++; } return SR_OK; } static GString *gen_header(struct sr_output *o) { struct context *ctx; GVariant *gvar; GString *header; int num_channels; char *samplerate_s; 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); } } header = g_string_sized_new(512); g_string_printf(header, "%s\n", PACKAGE_STRING); 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"); return header; } 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; int idx, offset, curbit, prevbit; uint64_t i, j; gchar *p, c; *out = NULL; if (!o || !o->sdi) return SR_ERR_ARG; if (!(ctx = o->internal)) return SR_ERR_ARG; switch (packet->type) { case 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); } break; case SR_DF_TRIGGER: ctx->trigger = ctx->spl_cnt; break; case SR_DF_LOGIC: if (!ctx->header_done) { *out = gen_header(o); ctx->header_done = TRUE; } else *out = g_string_sized_new(512); logic = packet->payload; for (i = 0; i <= logic->length - logic->unitsize; i += logic->unitsize) { ctx->spl_cnt++; for (j = 0; j < ctx->num_enabled_channels; j++) { idx = ctx->channel_index[j]; p = logic->data + i + idx / 8; curbit = *p & (1 << (idx % 8)); prevbit = (ctx->prev_sample[idx / 8] & ((uint8_t) 1 << (idx % 8))); c = curbit ? '"' : '.'; if (ctx->spl_cnt > 1) { if (curbit < prevbit) c = '\\'; else if (curbit > prevbit) c = '/'; } g_string_append_c(ctx->lines[j], c); 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; memcpy(ctx->prev_sample, logic->data + i, logic->unitsize); } 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++) { 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->channel_index); g_free(ctx->prev_sample); 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); g_free(ctx); o->internal = NULL; return SR_OK; } SR_PRIV struct sr_output_format output_ascii = { .id = "ascii", .description = "ASCII", .init = init, .receive = receive, .cleanup = cleanup, };