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session.c
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session.c
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/*
* This file is part of the sigrok-cli project.
*
* Copyright (C) 2013 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 "sigrok-cli.h"
#include <glib.h>
#include <glib/gstdio.h>
#include <string.h>
#include <stdlib.h>
static struct sr_output_format *output_format = NULL;
static int default_output_format = FALSE;
static uint64_t limit_samples = 0;
static uint64_t limit_frames = 0;
extern gchar *opt_output_file;
extern gchar *opt_output_format;
extern gchar *opt_pds;
extern gboolean opt_wait_trigger;
extern gchar *opt_time;
extern gchar *opt_samples;
extern gchar *opt_frames;
extern gchar *opt_continuous;
extern gchar *opt_config;
extern gchar *opt_triggers;
#ifdef HAVE_SRD
extern struct srd_session *srd_sess;
#endif
static int set_limit_time(const struct sr_dev_inst *sdi)
{
GVariant *gvar;
uint64_t time_msec;
uint64_t samplerate;
if (!(time_msec = sr_parse_timestring(opt_time))) {
g_critical("Invalid time '%s'", opt_time);
return SR_ERR;
}
if (sr_dev_has_option(sdi, SR_CONF_LIMIT_MSEC)) {
gvar = g_variant_new_uint64(time_msec);
if (sr_config_set(sdi, NULL, SR_CONF_LIMIT_MSEC, gvar) != SR_OK) {
g_critical("Failed to configure time limit.");
return SR_ERR;
}
} else if (sr_dev_has_option(sdi, SR_CONF_SAMPLERATE)) {
/* Convert to samples based on the samplerate. */
sr_config_get(sdi->driver, sdi, NULL, SR_CONF_SAMPLERATE, &gvar);
samplerate = g_variant_get_uint64(gvar);
g_variant_unref(gvar);
limit_samples = (samplerate) * time_msec / (uint64_t)1000;
if (limit_samples == 0) {
g_critical("Not enough time at this samplerate.");
return SR_ERR;
}
gvar = g_variant_new_uint64(limit_samples);
if (sr_config_set(sdi, NULL, SR_CONF_LIMIT_SAMPLES, gvar) != SR_OK) {
g_critical("Failed to configure time-based sample limit.");
return SR_ERR;
}
} else {
g_critical("This device does not support time limits.");
return SR_ERR;
}
return SR_OK;
}
struct sr_output *setup_output_format(const struct sr_dev_inst *sdi)
{
GHashTable *fmtargs;
struct sr_output *o;
struct sr_output_format **outputs;
int i;
char *fmtspec;
if (opt_output_format && !strcmp(opt_output_format, "sigrok")) {
/* Doesn't really exist as an output module - this is
* the session save mode. */
g_free(opt_output_format);
opt_output_format = NULL;
}
if (!opt_output_format) {
opt_output_format = DEFAULT_OUTPUT_FORMAT;
/* we'll need to remember this so when saving to a file
* later, sigrok session format will be used.
*/
default_output_format = TRUE;
}
fmtargs = parse_generic_arg(opt_output_format, TRUE);
fmtspec = g_hash_table_lookup(fmtargs, "sigrok_key");
if (!fmtspec)
g_critical("Invalid output format.");
outputs = sr_output_list();
for (i = 0; outputs[i]; i++) {
if (strcmp(outputs[i]->id, fmtspec))
continue;
g_hash_table_remove(fmtargs, "sigrok_key");
output_format = outputs[i];
break;
}
if (!output_format)
g_critical("Invalid output format '%s'.", opt_output_format);
o = sr_output_new(output_format, fmtargs, sdi);
g_hash_table_destroy(fmtargs);
return o;
}
void datafeed_in(const struct sr_dev_inst *sdi,
const struct sr_datafeed_packet *packet, void *cb_data)
{
const struct sr_datafeed_meta *meta;
const struct sr_datafeed_logic *logic;
const struct sr_datafeed_analog *analog;
struct sr_config *src;
struct sr_channel *ch;
static struct sr_output *o = NULL;
static uint64_t rcvd_samples_logic = 0;
static uint64_t rcvd_samples_analog = 0;
static uint64_t samplerate = 0;
static int triggered = 0;
static FILE *outfile = NULL;
GSList *l;
GString *out;
GVariant *gvar;
uint64_t end_sample;
uint64_t input_len;
int i;
char **channels;
(void) cb_data;
/* If the first packet to come in isn't a header, don't even try. */
if (packet->type != SR_DF_HEADER && o == NULL)
return;
switch (packet->type) {
case SR_DF_HEADER:
g_debug("cli: Received SR_DF_HEADER.");
o = setup_output_format(sdi);
/* Prepare non-stdout output. */
outfile = stdout;
if (opt_output_file) {
if (default_output_format) {
outfile = NULL;
} else {
/* saving to a file in whatever format was set
* with --format, so all we need is a filehandle */
outfile = g_fopen(opt_output_file, "wb");
}
}
rcvd_samples_logic = rcvd_samples_analog = 0;
if (sr_config_get(sdi->driver, sdi, NULL, SR_CONF_SAMPLERATE,
&gvar) == SR_OK) {
samplerate = g_variant_get_uint64(gvar);
g_variant_unref(gvar);
}
#ifdef HAVE_SRD
if (opt_pds) {
if (samplerate) {
if (srd_session_metadata_set(srd_sess, SRD_CONF_SAMPLERATE,
g_variant_new_uint64(samplerate)) != SRD_OK) {
g_critical("Failed to configure decode session.");
break;
}
}
if (srd_session_start(srd_sess) != SRD_OK) {
g_critical("Failed to start decode session.");
break;
}
}
#endif
break;
case SR_DF_META:
g_debug("cli: Received SR_DF_META.");
meta = packet->payload;
for (l = meta->config; l; l = l->next) {
src = l->data;
switch (src->key) {
case SR_CONF_SAMPLERATE:
samplerate = g_variant_get_uint64(src->data);
g_debug("cli: Got samplerate %"PRIu64" Hz.", samplerate);
#ifdef HAVE_SRD
if (opt_pds) {
if (srd_session_metadata_set(srd_sess, SRD_CONF_SAMPLERATE,
g_variant_new_uint64(samplerate)) != SRD_OK) {
g_critical("Failed to pass samplerate to decoder.");
}
}
#endif
break;
case SR_CONF_SAMPLE_INTERVAL:
samplerate = g_variant_get_uint64(src->data);
g_debug("cli: Got sample interval %"PRIu64" ms.", samplerate);
break;
default:
/* Unknown metadata is not an error. */
break;
}
}
break;
case SR_DF_TRIGGER:
g_debug("cli: Received SR_DF_TRIGGER.");
triggered = 1;
break;
case SR_DF_LOGIC:
logic = packet->payload;
g_message("cli: Received SR_DF_LOGIC (%"PRIu64" bytes, unitsize = %d).",
logic->length, logic->unitsize);
if (logic->length == 0)
break;
/* Don't store any samples until triggered. */
if (opt_wait_trigger && !triggered)
break;
if (limit_samples && rcvd_samples_logic >= limit_samples)
break;
end_sample = rcvd_samples_logic + logic->length / logic->unitsize;
/* Cut off last packet according to the sample limit. */
if (limit_samples && end_sample > limit_samples)
end_sample = limit_samples;
input_len = (end_sample - rcvd_samples_logic) * logic->unitsize;
if (opt_output_file && default_output_format) {
/* Saving to a session file. */
if (rcvd_samples_logic == 0) {
/* First packet with logic data, init session file. */
channels = g_malloc(sizeof(char *) * g_slist_length(sdi->channels));
for (i = 0, l = sdi->channels; l; l = l->next) {
ch = l->data;
if (ch->enabled && ch->type == SR_CHANNEL_LOGIC)
channels[i++] = ch->name;
}
channels[i] = NULL;
sr_session_save_init(opt_output_file, samplerate,
channels);
g_free(channels);
}
save_chunk_logic(logic->data, input_len, logic->unitsize);
} else {
if (opt_pds) {
#ifdef HAVE_SRD
if (srd_session_send(srd_sess, rcvd_samples_logic, end_sample,
logic->data, input_len) != SRD_OK)
sr_session_stop();
#endif
}
}
rcvd_samples_logic = end_sample;
break;
case SR_DF_ANALOG:
analog = packet->payload;
g_message("cli: Received SR_DF_ANALOG (%d samples).", analog->num_samples);
if (analog->num_samples == 0)
break;
if (limit_samples && rcvd_samples_analog >= limit_samples)
break;
rcvd_samples_analog += analog->num_samples;
break;
case SR_DF_FRAME_BEGIN:
g_debug("cli: Received SR_DF_FRAME_BEGIN.");
break;
case SR_DF_FRAME_END:
g_debug("cli: Received SR_DF_FRAME_END.");
break;
default:
break;
}
if (o && outfile && !opt_pds) {
if (sr_output_send(o, packet, &out) == SR_OK && out) {
fwrite(out->str, 1, out->len, outfile);
fflush(outfile);
g_string_free(out, TRUE);
}
}
/* SR_DF_END needs to be handled after the output module's receive()
* is called, so it can properly clean up that module. */
if (packet->type == SR_DF_END) {
g_debug("cli: Received SR_DF_END.");
if (o)
sr_output_free(o);
o = NULL;
if (outfile && outfile != stdout)
fclose(outfile);
if (opt_output_file && default_output_format)
/* Flush whatever is left out to the session file. */
save_chunk_logic(NULL, 0, 0);
if (limit_samples) {
if (rcvd_samples_logic > 0 && rcvd_samples_logic < limit_samples)
g_warning("Device only sent %" PRIu64 " samples.",
rcvd_samples_logic);
else if (rcvd_samples_analog > 0 && rcvd_samples_analog < limit_samples)
g_warning("Device only sent %" PRIu64 " samples.",
rcvd_samples_analog);
}
}
}
int opt_to_gvar(char *key, char *value, struct sr_config *src)
{
const struct sr_config_info *srci;
double tmp_double, dlow, dhigh;
uint64_t tmp_u64, p, q, low, high;
GVariant *rational[2], *range[2];
gboolean tmp_bool;
int ret;
if (!(srci = sr_config_info_name_get(key))) {
g_critical("Unknown device option '%s'.", (char *) key);
return -1;
}
src->key = srci->key;
if ((value == NULL) &&
(srci->datatype != SR_T_BOOL)) {
g_critical("Option '%s' needs a value.", (char *)key);
return -1;
}
ret = 0;
switch (srci->datatype) {
case SR_T_UINT64:
ret = sr_parse_sizestring(value, &tmp_u64);
if (ret != 0)
break;
src->data = g_variant_new_uint64(tmp_u64);
break;
case SR_T_INT32:
ret = sr_parse_sizestring(value, &tmp_u64);
if (ret != 0)
break;
src->data = g_variant_new_int32(tmp_u64);
break;
case SR_T_STRING:
src->data = g_variant_new_string(value);
break;
case SR_T_BOOL:
if (!value)
tmp_bool = TRUE;
else
tmp_bool = sr_parse_boolstring(value);
src->data = g_variant_new_boolean(tmp_bool);
break;
case SR_T_FLOAT:
tmp_double = strtof(value, NULL);
src->data = g_variant_new_double(tmp_double);
break;
case SR_T_RATIONAL_PERIOD:
if ((ret = sr_parse_period(value, &p, &q)) != SR_OK)
break;
rational[0] = g_variant_new_uint64(p);
rational[1] = g_variant_new_uint64(q);
src->data = g_variant_new_tuple(rational, 2);
break;
case SR_T_RATIONAL_VOLT:
if ((ret = sr_parse_voltage(value, &p, &q)) != SR_OK)
break;
rational[0] = g_variant_new_uint64(p);
rational[1] = g_variant_new_uint64(q);
src->data = g_variant_new_tuple(rational, 2);
break;
case SR_T_UINT64_RANGE:
if (sscanf(value, "%"PRIu64"-%"PRIu64, &low, &high) != 2) {
ret = -1;
break;
} else {
range[0] = g_variant_new_uint64(low);
range[1] = g_variant_new_uint64(high);
src->data = g_variant_new_tuple(range, 2);
}
break;
case SR_T_DOUBLE_RANGE:
if (sscanf(value, "%lf-%lf", &dlow, &dhigh) != 2) {
ret = -1;
break;
} else {
range[0] = g_variant_new_double(dlow);
range[1] = g_variant_new_double(dhigh);
src->data = g_variant_new_tuple(range, 2);
}
break;
default:
ret = -1;
}
return ret;
}
int set_dev_options(struct sr_dev_inst *sdi, GHashTable *args)
{
struct sr_config src;
struct sr_channel_group *cg;
GHashTableIter iter;
gpointer key, value;
int ret;
g_hash_table_iter_init(&iter, args);
while (g_hash_table_iter_next(&iter, &key, &value)) {
if ((ret = opt_to_gvar(key, value, &src)) != 0)
return ret;
cg = select_channel_group(sdi);
ret = sr_config_set(sdi, cg, src.key, src.data);
if (ret != SR_OK) {
g_critical("Failed to set device option '%s'.", (char *)key);
return ret;
}
}
return SR_OK;
}
void run_session(void)
{
GSList *devices;
GHashTable *devargs;
GVariant *gvar;
struct sr_dev_inst *sdi;
uint64_t min_samples, max_samples;
devices = device_scan();
if (!devices) {
g_critical("No devices found.");
return;
}
if (g_slist_length(devices) > 1) {
g_critical("sigrok-cli only supports one device for capturing.");
return;
}
sdi = devices->data;
sr_session_new();
sr_session_datafeed_callback_add(datafeed_in, NULL);
if (sr_dev_open(sdi) != SR_OK) {
g_critical("Failed to open device.");
return;
}
if (sr_session_dev_add(sdi) != SR_OK) {
g_critical("Failed to add device to session.");
sr_session_destroy();
return;
}
if (opt_config) {
if ((devargs = parse_generic_arg(opt_config, FALSE))) {
if (set_dev_options(sdi, devargs) != SR_OK)
return;
g_hash_table_destroy(devargs);
}
}
if (select_channels(sdi) != SR_OK) {
g_critical("Failed to set channels.");
sr_session_destroy();
return;
}
if (opt_triggers) {
if (!parse_triggerstring(sdi, opt_triggers)) {
sr_session_destroy();
return;
}
}
if (opt_continuous) {
if (!sr_dev_has_option(sdi, SR_CONF_CONTINUOUS)) {
g_critical("This device does not support continuous sampling.");
sr_session_destroy();
return;
}
}
if (opt_time) {
if (set_limit_time(sdi) != SR_OK) {
sr_session_destroy();
return;
}
}
if (opt_samples) {
if ((sr_parse_sizestring(opt_samples, &limit_samples) != SR_OK)) {
g_critical("Invalid sample limit '%s'.", opt_samples);
sr_session_destroy();
return;
}
if (sr_config_list(sdi->driver, sdi, NULL,
SR_CONF_LIMIT_SAMPLES, &gvar) == SR_OK) {
/* The device has no compression, or compression is turned
* off, and publishes its sample memory size. */
g_variant_get(gvar, "(tt)", &min_samples, &max_samples);
g_variant_unref(gvar);
if (limit_samples < min_samples) {
g_critical("The device stores at least %"PRIu64
" samples with the current settings.", min_samples);
}
if (limit_samples > max_samples) {
g_critical("The device can store only %"PRIu64
" samples with the current settings.", max_samples);
}
}
gvar = g_variant_new_uint64(limit_samples);
if (sr_config_set(sdi, NULL, SR_CONF_LIMIT_SAMPLES, gvar) != SR_OK) {
g_critical("Failed to configure sample limit.");
sr_session_destroy();
return;
}
}
if (opt_frames) {
if ((sr_parse_sizestring(opt_frames, &limit_frames) != SR_OK)) {
g_critical("Invalid sample limit '%s'.", opt_samples);
sr_session_destroy();
return;
}
gvar = g_variant_new_uint64(limit_frames);
if (sr_config_set(sdi, NULL, SR_CONF_LIMIT_FRAMES, gvar) != SR_OK) {
g_critical("Failed to configure frame limit.");
sr_session_destroy();
return;
}
}
if (sr_session_start() != SR_OK) {
g_critical("Failed to start session.");
sr_session_destroy();
return;
}
if (opt_continuous)
add_anykey();
sr_session_run();
if (opt_continuous)
clear_anykey();
sr_session_datafeed_callback_remove_all();
sr_session_destroy();
g_slist_free(devices);
}
void save_chunk_logic(uint8_t *data, uint64_t data_len, int unitsize)
{
static uint8_t *buf = NULL;
static int buf_len = 0;
static int last_unitsize = 0;
int max;
if (!buf)
buf = g_malloc(SAVE_CHUNK_SIZE);
if (buf_len + data_len > SAVE_CHUNK_SIZE) {
max = (SAVE_CHUNK_SIZE - buf_len) / unitsize * unitsize;
memcpy(buf + buf_len, data, max);
sr_session_append(opt_output_file, buf, unitsize,
(buf_len + max) / unitsize);
memcpy(buf, data + max, data_len - max);
buf_len = data_len - max;
} else if (data_len == 0 && last_unitsize != 0) {
/* End of data, flush the buffer out. */
sr_session_append(opt_output_file, buf, last_unitsize,
buf_len / last_unitsize);
} else {
/* Buffer chunk. */
memcpy(buf + buf_len, data, data_len);
buf_len += data_len;
}
last_unitsize = unitsize;
}