/*
* This file is part of the sigrok project.
*
- * Copyright (C) 2011 Bert Vermeulen <bert@biot.com>
+ * Copyright (C) 2012 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
#include <unistd.h>
#include <sys/time.h>
#include <zip.h>
-#include <sigrok.h>
-#include <sigrok-internal.h>
+#include "sigrok.h"
+#include "sigrok-internal.h"
/* size of payloads sent across the session bus */
-#define CHUNKSIZE 4096
+#define CHUNKSIZE (512 * 1024)
struct session_vdevice {
char *capturefile;
struct zip *archive;
struct zip_file *capfile;
+ int bytes_read;
uint64_t samplerate;
int unitsize;
int num_probes;
0,
};
-
+/**
+ * TODO.
+ *
+ * @param device_index TODO.
+ */
static struct session_vdevice *get_vdevice_by_index(int device_index)
{
struct sr_device_instance *sdi;
struct session_vdevice *vdevice;
- if (!(sdi = sr_get_device_instance(device_instances, device_index)))
+ /* TODO: Sanity checks on device_index. */
+
+ if (!(sdi = sr_get_device_instance(device_instances, device_index))) {
+ sr_err("session driver: %s: device instance with device "
+ "index %d was not found", __func__, device_index);
return NULL;
+ }
+
+ /* TODO: Is sdi->priv == NULL valid? */
vdevice = sdi->priv;
return vdevice;
}
+/**
+ * TODO.
+ *
+ * @param fd TODO.
+ * @param revents TODO.
+ * @param session_data TODO.
+ *
+ * @return TODO.
+ */
static int feed_chunk(int fd, int revents, void *session_data)
{
struct sr_device_instance *sdi;
if (ret > 0) {
got_data = TRUE;
packet.type = SR_DF_LOGIC;
- packet.timeoffset = 0;
- packet.duration = 0;
packet.payload = &logic;
logic.length = ret;
logic.unitsize = vdevice->unitsize;
logic.data = buf;
+ vdevice->bytes_read += ret;
sr_session_bus(session_data, &packet);
} else {
/* done with this capture file */
/* driver callbacks */
static void hw_cleanup(void);
+/**
+ * TODO.
+ *
+ * @param deviceinfo TODO.
+ *
+ * @return TODO.
+ */
static int hw_init(const char *deviceinfo)
{
- hw_cleanup();
sessionfile = g_strdup(deviceinfo);
return 0;
}
+/**
+ * TODO.
+ *
+ */
static void hw_cleanup(void)
{
GSList *l;
sr_session_source_remove(-1);
g_free(sessionfile);
-
}
static int hw_opendev(int device_index)
/* Avoid compiler warnings. */
(void)device_index;
- if (devices)
+ if (sr_device_list() != NULL)
return SR_OK;
else
return SR_ERR;
}
+/**
+ * Get the list of hardware capabilities.
+ *
+ * @return A pointer to the (hardware) capabilities of this virtual session
+ * driver. This could be NULL, if no such capabilities exist.
+ */
static int *hw_get_capabilities(void)
{
-
return capabilities;
}
case SR_HWCAP_SAMPLERATE:
tmp_u64 = value;
vdevice->samplerate = *tmp_u64;
+ sr_info("session driver: setting samplerate to %" PRIu64,
+ vdevice->samplerate);
break;
case SR_HWCAP_CAPTUREFILE:
vdevice->capturefile = g_strdup(value);
+ sr_info("session driver: setting capturefile to %s",
+ vdevice->capturefile);
break;
case SR_HWCAP_CAPTURE_UNITSIZE:
tmp_u64 = value;
vdevice->num_probes = *tmp_u64;
break;
default:
+ sr_err("session driver: %s: unknown capability %d requested",
+ __func__, capability);
return SR_ERR;
}
packet->payload = (unsigned char *)header;
header->feed_version = 1;
gettimeofday(&header->starttime, NULL);
- header->samplerate = 0;
+ header->samplerate = vdevice->samplerate;
header->num_logic_probes = vdevice->num_probes;
header->num_analog_probes = 0;
sr_session_bus(session_device_id, packet);
return SR_OK;
}
+/* Not static, it's used elsewhere (via 'extern'). */
struct sr_device_plugin session_driver = {
"session",
"Session-emulating driver",