#include <unistd.h>
#include <string.h>
#include <glib.h>
-#include "libsigrok.h"
+#include <libsigrok/libsigrok.h>
#include "libsigrok-internal.h"
/** @cond PRIVATE */
/**
* Create a new session.
*
+ * @param ctx The context in which to create the new session.
* @param new_session This will contain a pointer to the newly created
* session if the return value is SR_OK, otherwise the value
* is undefined and should not be used. Must not be NULL.
*
* @since 0.4.0
*/
-SR_API int sr_session_new(struct sr_session **new_session)
+SR_API int sr_session_new(struct sr_context *ctx,
+ struct sr_session **new_session)
{
struct sr_session *session;
session = g_malloc0(sizeof(struct sr_session));
+ session->ctx = ctx;
session->source_timeout = -1;
session->running = FALSE;
session->abort_session = FALSE;
return SR_ERR_ARG;
}
- if (!(cb_struct = g_try_malloc0(sizeof(struct datafeed_callback))))
- return SR_ERR_MALLOC;
-
+ cb_struct = g_malloc0(sizeof(struct datafeed_callback));
cb_struct->cb = cb;
cb_struct->cb_data = cb_data;
return SR_OK;
}
+/**
+ * Get the trigger assigned to this session.
+ *
+ * @param session The session to use.
+ *
+ * @retval NULL Invalid (NULL) session was passed to the function.
+ * @retval other The trigger assigned to this session (can be NULL).
+ *
+ * @since 0.4.0
+ */
SR_API struct sr_trigger *sr_session_trigger_get(struct sr_session *session)
{
+ if (!session)
+ return NULL;
+
return session->trigger;
}
+/**
+ * Set the trigger of this session.
+ *
+ * @param session The session to use. Must not be NULL.
+ * @param trig The trigger to assign to this session. Can be NULL.
+ *
+ * @retval SR_OK Success.
+ * @retval SR_ERR_ARG Invalid argument.
+ *
+ * @since 0.4.0
+ */
SR_API int sr_session_trigger_set(struct sr_session *session, struct sr_trigger *trig)
{
+ if (!session)
+ return SR_ERR_ARG;
+
session->trigger = trig;
return SR_OK;
* of file descriptor or timeout status.
*
* @retval SR_OK Success.
- * @retval SR_ERR Error occured.
+ * @retval SR_ERR Error occurred.
*/
static int sr_session_iteration(struct sr_session *session, gboolean block)
{
unsigned int i;
- int ret;
+ int ret, timeout;
+#ifdef HAVE_LIBUSB_1_0
+ int usb_timeout;
+ struct timeval tv;
+#endif
+
+ timeout = block ? session->source_timeout : 0;
+
+#ifdef HAVE_LIBUSB_1_0
+ if (session->ctx->usb_source_present) {
+ timeout = block ? 0 : session->source_timeout;
+ ret = libusb_get_next_timeout(session->ctx->libusb_ctx, &tv);
+ if (ret < 0) {
+ sr_err("Error getting libusb timeout: %s",
+ libusb_error_name(ret));
+ return SR_ERR;
+ } else if (ret == 1) {
+ usb_timeout = tv.tv_sec * 1000 + tv.tv_usec / 1000;
+ timeout = MIN(timeout, usb_timeout);
+ }
+ }
+#endif
- ret = g_poll(session->pollfds, session->num_sources,
- block ? session->source_timeout : 0);
+ ret = g_poll(session->pollfds, session->num_sources, timeout);
for (i = 0; i < session->num_sources; i++) {
if (session->pollfds[i].revents > 0 || (ret == 0
&& session->source_timeout == session->sources[i].timeout)) {
return SR_OK;
}
-
static int verify_trigger(struct sr_trigger *trigger)
{
struct sr_trigger_stage *stage;
return SR_OK;
}
+
/**
* Start a session.
*
const struct sr_datafeed_analog *analog;
const struct sr_datafeed_analog2 *analog2;
+ /* Please use the same order as in libsigrok.h. */
switch (packet->type) {
case SR_DF_HEADER:
sr_dbg("bus: Received SR_DF_HEADER packet.");
break;
- case SR_DF_TRIGGER:
- sr_dbg("bus: Received SR_DF_TRIGGER packet.");
+ case SR_DF_END:
+ sr_dbg("bus: Received SR_DF_END packet.");
break;
case SR_DF_META:
sr_dbg("bus: Received SR_DF_META packet.");
break;
+ case SR_DF_TRIGGER:
+ sr_dbg("bus: Received SR_DF_TRIGGER packet.");
+ break;
case SR_DF_LOGIC:
logic = packet->payload;
sr_dbg("bus: Received SR_DF_LOGIC packet (%" PRIu64 " bytes, "
sr_dbg("bus: Received SR_DF_ANALOG packet (%d samples).",
analog->num_samples);
break;
- case SR_DF_ANALOG2:
- analog2 = packet->payload;
- sr_dbg("bus: Received SR_DF_ANALOG2 packet (%d samples).",
- analog2->num_samples);
- break;
- case SR_DF_END:
- sr_dbg("bus: Received SR_DF_END packet.");
- break;
case SR_DF_FRAME_BEGIN:
sr_dbg("bus: Received SR_DF_FRAME_BEGIN packet.");
break;
case SR_DF_FRAME_END:
sr_dbg("bus: Received SR_DF_FRAME_END packet.");
break;
+ case SR_DF_ANALOG2:
+ analog2 = packet->payload;
+ sr_dbg("bus: Received SR_DF_ANALOG2 packet (%d samples).",
+ analog2->num_samples);
+ break;
default:
sr_dbg("bus: Received unknown packet type: %d.", packet->type);
break;
{
GSList *l;
struct datafeed_callback *cb_struct;
+ struct sr_datafeed_packet *packet_in, *packet_out;
+ struct sr_transform *t;
+ int ret;
if (!sdi) {
sr_err("%s: sdi was NULL", __func__);
return SR_ERR_BUG;
}
+ /*
+ * Pass the packet to the first transform module. If that returns
+ * another packet (instead of NULL), pass that packet to the next
+ * transform module in the list, and so on.
+ */
+ packet_in = (struct sr_datafeed_packet *)packet;
+ for (l = sdi->session->transforms; l; l = l->next) {
+ t = l->data;
+ sr_spew("Running transform module '%s'.", t->module->id);
+ ret = t->module->receive(t, packet_in, &packet_out);
+ if (ret < 0) {
+ sr_err("Error while running transform module: %d.", ret);
+ return SR_ERR;
+ }
+ if (!packet_out) {
+ /*
+ * If any of the transforms don't return an output
+ * packet, abort.
+ */
+ sr_spew("Transform module didn't return a packet, aborting.");
+ return SR_OK;
+ } else {
+ /*
+ * Use this transform module's output packet as input
+ * for the next transform module.
+ */
+ packet_in = packet_out;
+ }
+ }
+
+ /*
+ * If the last transform did output a packet, pass it to all datafeed
+ * callbacks.
+ */
for (l = sdi->session->datafeed_callbacks; l; l = l->next) {
if (sr_log_loglevel_get() >= SR_LOG_DBG)
datafeed_dump(packet);
*
* @retval SR_OK Success.
* @retval SR_ERR_ARG Invalid argument.
- * @retval SR_ERR_MALLOC Memory allocation error.
*/
static int _sr_session_source_add(struct sr_session *session, GPollFD *pollfd,
int timeout, sr_receive_data_callback cb, void *cb_data, gintptr poll_object)
/* Note: cb_data can be NULL, that's not a bug. */
- new_pollfds = g_try_realloc(session->pollfds,
+ new_pollfds = g_realloc(session->pollfds,
sizeof(GPollFD) * (session->num_sources + 1));
- if (!new_pollfds) {
- sr_err("%s: new_pollfds malloc failed", __func__);
- return SR_ERR_MALLOC;
- }
-
- new_sources = g_try_realloc(session->sources, sizeof(struct source) *
+ new_sources = g_realloc(session->sources, sizeof(struct source) *
(session->num_sources + 1));
- if (!new_sources) {
- sr_err("%s: new_sources malloc failed", __func__);
- return SR_ERR_MALLOC;
- }
new_pollfds[session->num_sources] = *pollfd;
s = &new_sources[session->num_sources++];
*
* @retval SR_OK Success.
* @retval SR_ERR_ARG Invalid argument.
- * @retval SR_ERR_MALLOC Memory allocation error.
*
* @since 0.3.0
*/
*
* @retval SR_OK Success.
* @retval SR_ERR_ARG Invalid argument.
- * @retval SR_ERR_MALLOC Memory allocation error.
*
* @since 0.3.0
*/
*
* @retval SR_OK Success.
* @retval SR_ERR_ARG Invalid argument.
- * @retval SR_ERR_MALLOC Memory allocation error.
*
* @since 0.3.0
*/
/**
* Remove the source belonging to the specified channel.
*
- * @todo Add more error checks and logging.
- *
* @param session The session to use. Must not be NULL.
* @param poll_object The channel for which the source should be removed.
*
* @retval SR_OK Success
* @retval SR_ERR_ARG Invalid arguments
- * @retval SR_ERR_MALLOC Memory allocation error
* @retval SR_ERR_BUG Internal error
*/
static int _sr_session_source_remove(struct sr_session *session, gintptr poll_object)
{
- struct source *new_sources;
- GPollFD *new_pollfds;
unsigned int old;
if (!session->sources || !session->num_sources) {
if (old == session->num_sources)
return SR_OK;
- session->num_sources -= 1;
+ session->num_sources--;
if (old != session->num_sources) {
- memmove(&session->pollfds[old], &session->pollfds[old+1],
+ memmove(&session->pollfds[old], &session->pollfds[old + 1],
(session->num_sources - old) * sizeof(GPollFD));
- memmove(&session->sources[old], &session->sources[old+1],
+ memmove(&session->sources[old], &session->sources[old + 1],
(session->num_sources - old) * sizeof(struct source));
}
- new_pollfds = g_try_realloc(session->pollfds, sizeof(GPollFD) * session->num_sources);
- if (!new_pollfds && session->num_sources > 0) {
- sr_err("%s: new_pollfds malloc failed", __func__);
- return SR_ERR_MALLOC;
- }
-
- new_sources = g_try_realloc(session->sources, sizeof(struct source) * session->num_sources);
- if (!new_sources && session->num_sources > 0) {
- sr_err("%s: new_sources malloc failed", __func__);
- return SR_ERR_MALLOC;
- }
-
- session->pollfds = new_pollfds;
- session->sources = new_sources;
+ session->pollfds = g_realloc(session->pollfds, sizeof(GPollFD) * session->num_sources);
+ session->sources = g_realloc(session->sources, sizeof(struct source) * session->num_sources);
return SR_OK;
}
*
* @retval SR_OK Success
* @retval SR_ERR_ARG Invalid argument
- * @retval SR_ERR_MALLOC Memory allocation error.
* @retval SR_ERR_BUG Internal error.
*
* @since 0.3.0
*
* @retval SR_OK Success.
* @retval SR_ERR_ARG Invalid argument.
- * @retval SR_ERR_MALLOC Memory allocation error.
* @return SR_ERR_BUG Internal error.
*
* @since 0.2.0
return _sr_session_source_remove(session, (gintptr)channel);
}
-static void *copy_src(struct sr_config *src)
+static void copy_src(struct sr_config *src, struct sr_datafeed_meta *meta_copy)
{
- struct sr_config *new_src;
-
- new_src = g_malloc(sizeof(struct sr_config));
- memcpy(new_src, src, sizeof(struct sr_config));
g_variant_ref(src->data);
-
- return new_src;
+ meta_copy->config = g_slist_append(meta_copy->config,
+ g_memdup(src, sizeof(struct sr_config)));
}
SR_PRIV int sr_packet_copy(const struct sr_datafeed_packet *packet,
break;
case SR_DF_META:
meta = packet->payload;
- meta_copy = g_malloc(sizeof(struct sr_datafeed_meta));
- meta_copy->config = g_slist_copy_deep(meta->config,
- (GCopyFunc)copy_src, NULL);
+ meta_copy = g_malloc0(sizeof(struct sr_datafeed_meta));
+ g_slist_foreach(meta->config, (GFunc)copy_src, meta_copy->config);
(*copy)->payload = meta_copy;
break;
case SR_DF_LOGIC:
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