[libsigrok.git] / src / session_driver.c

/*
 * This file is part of the libsigrok 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 <config.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/time.h>
#include <zip.h>
#include <libsigrok/libsigrok.h>
#include "libsigrok-internal.h"

#define LOG_PREFIX "virtual-session"

/* size of payloads sent across the session bus */
/** @cond PRIVATE */
#define CHUNKSIZE (512 * 1024)
/** @endcond */

SR_PRIV struct sr_dev_driver session_driver_info;

struct session_vdev {
	char *sessionfile;
	char *capturefile;
	struct zip *archive;
	struct zip_file *capfile;
	int bytes_read;
	uint64_t samplerate;
	int unitsize;
	int num_channels;
	int num_analog_channels;
	int cur_analog_channel;
	GArray *analog_channels;
	int cur_chunk;
	gboolean finished;
};

static const uint32_t devopts[] = {
	SR_CONF_CAPTUREFILE | SR_CONF_SET,
	SR_CONF_CAPTURE_UNITSIZE | SR_CONF_GET | SR_CONF_SET,
	SR_CONF_NUM_LOGIC_CHANNELS | SR_CONF_SET,
	SR_CONF_NUM_ANALOG_CHANNELS | SR_CONF_SET,
	SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET,
	SR_CONF_SESSIONFILE | SR_CONF_SET,
};

static gboolean stream_session_data(struct sr_dev_inst *sdi)
{
	struct session_vdev *vdev;
	struct sr_datafeed_packet packet;
	struct sr_datafeed_logic logic;
	struct sr_datafeed_analog_old analog;
	struct zip_stat zs;
	int ret, got_data;
	char capturefile[16];
	void *buf;

	got_data = FALSE;
	vdev = sdi->priv;

	if (!vdev->capfile) {
		/* No capture file opened yet, or finished with the last
		 * chunked one. */
		if (vdev->capturefile && (vdev->cur_chunk == 0)) {
			/* capturefile is always the unchunked base name. */
			if (zip_stat(vdev->archive, vdev->capturefile, 0, &zs) != -1) {
				/* No chunks, just a single capture file. */
				vdev->cur_chunk = 0;
				if (!(vdev->capfile = zip_fopen(vdev->archive,
						vdev->capturefile, 0)))
					return FALSE;
				sr_dbg("Opened %s.", vdev->capturefile);
			} else {
				/* Try as first chunk filename. */
				snprintf(capturefile, 15, "%s-1", vdev->capturefile);
				if (zip_stat(vdev->archive, capturefile, 0, &zs) != -1) {
					vdev->cur_chunk = 1;
					if (!(vdev->capfile = zip_fopen(vdev->archive,
							capturefile, 0)))
						return FALSE;
					sr_dbg("Opened %s.", capturefile);
				} else {
					sr_err("No capture file '%s' in " "session file '%s'.",
							vdev->capturefile, vdev->sessionfile);
					return FALSE;
				}
			}
		} else {
			/* Capture data is chunked, advance to the next chunk. */
			vdev->cur_chunk++;
			snprintf(capturefile, 15, "%s-%d", vdev->capturefile,
					vdev->cur_chunk);
			if (zip_stat(vdev->archive, capturefile, 0, &zs) != -1) {
				if (!(vdev->capfile = zip_fopen(vdev->archive,
						capturefile, 0)))
					return FALSE;
				sr_dbg("Opened %s.", capturefile);
			} else if (vdev->cur_analog_channel < vdev->num_analog_channels) {
				vdev->capturefile = g_strdup_printf("analog-1-%d",
						vdev->num_channels + vdev->cur_analog_channel + 1);
				vdev->cur_analog_channel++;
				vdev->cur_chunk = 0;
				return TRUE;
			} else {
				/* We got all the chunks, finish up. */
				return FALSE;
			}
		}
	}

	buf = g_malloc(CHUNKSIZE);

	/* unitsize is not defined for purely analog session files. */
	if (vdev->unitsize)
		ret = zip_fread(vdev->capfile, buf,
				CHUNKSIZE / vdev->unitsize * vdev->unitsize);
	else
		ret = zip_fread(vdev->capfile, buf, CHUNKSIZE);

	if (ret > 0) {
		got_data = TRUE;
		if (vdev->cur_analog_channel != 0) {
			packet.type = SR_DF_ANALOG_OLD;
			packet.payload = &analog;
			analog.channels = g_slist_prepend(NULL,
					g_array_index(vdev->analog_channels,
						struct sr_channel *, vdev->cur_analog_channel - 1));
			analog.num_samples = ret / sizeof(float);
			analog.mq = SR_MQ_VOLTAGE;
			analog.unit = SR_UNIT_VOLT;
			analog.mqflags = SR_MQFLAG_DC;
			analog.data = (float *) buf;
		} else {
			if (ret % vdev->unitsize != 0)
				sr_warn("Read size %d not a multiple of the"
					" unit size %d.", ret, vdev->unitsize);
			packet.type = SR_DF_LOGIC;
			packet.payload = &logic;
			logic.length = ret;
			logic.unitsize = vdev->unitsize;
			logic.data = buf;
		}
		vdev->bytes_read += ret;
		sr_session_send(sdi, &packet);
	} else {
		/* done with this capture file */
		zip_fclose(vdev->capfile);
		vdev->capfile = NULL;
		if (vdev->cur_chunk != 0) {
			/* There might be more chunks, so don't fall through
			 * to the SR_DF_END here. */
			got_data = TRUE;
		}
	}
	g_free(buf);

	return got_data;
}

static int receive_data(int fd, int revents, void *cb_data)
{
	struct sr_dev_inst *sdi;
	struct session_vdev *vdev;

	(void)fd;
	(void)revents;

	sdi = cb_data;
	vdev = sdi->priv;

	if (!vdev->finished && !stream_session_data(sdi))
		vdev->finished = TRUE;
	if (!vdev->finished)
		return G_SOURCE_CONTINUE;

	if (vdev->capfile) {
		zip_fclose(vdev->capfile);
		vdev->capfile = NULL;
	}
	if (vdev->archive) {
		zip_discard(vdev->archive);
		vdev->archive = NULL;
	}

	std_session_send_df_end(sdi, LOG_PREFIX);

	return G_SOURCE_REMOVE;
}

/* driver callbacks */

static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
{
	return std_init(sr_ctx, di, LOG_PREFIX);
}

static int dev_clear(const struct sr_dev_driver *di)
{
	struct drv_context *drvc;
	GSList *l;

	drvc = di->context;
	for (l = drvc->instances; l; l = l->next)
		sr_dev_inst_free(l->data);
	g_slist_free(drvc->instances);
	drvc->instances = NULL;

	return SR_OK;
}

static int dev_open(struct sr_dev_inst *sdi)
{
	struct sr_dev_driver *di;
	struct drv_context *drvc;
	struct session_vdev *vdev;

	di = sdi->driver;
	drvc = di->context;
	vdev = g_malloc0(sizeof(struct session_vdev));
	sdi->priv = vdev;
	drvc->instances = g_slist_append(drvc->instances, sdi);

	return SR_OK;
}

static int dev_close(struct sr_dev_inst *sdi)
{
	const struct session_vdev *const vdev = sdi->priv;
	g_free(vdev->sessionfile);
	g_free(vdev->capturefile);

	g_free(sdi->priv);
	sdi->priv = NULL;

	return SR_OK;
}

static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
		const struct sr_channel_group *cg)
{
	struct session_vdev *vdev;

	(void)cg;

	if (!sdi)
		return SR_ERR;

	vdev = sdi->priv;

	switch (key) {
	case SR_CONF_SAMPLERATE:
		*data = g_variant_new_uint64(vdev->samplerate);
		break;
	case SR_CONF_CAPTURE_UNITSIZE:
		*data = g_variant_new_uint64(vdev->unitsize);
		break;
	default:
		return SR_ERR_NA;
	}

	return SR_OK;
}

static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
		const struct sr_channel_group *cg)
{
	struct session_vdev *vdev;

	(void)cg;

	vdev = sdi->priv;

	switch (key) {
	case SR_CONF_SAMPLERATE:
		vdev->samplerate = g_variant_get_uint64(data);
		sr_info("Setting samplerate to %" PRIu64 ".", vdev->samplerate);
		break;
	case SR_CONF_SESSIONFILE:
		g_free(vdev->sessionfile);
		vdev->sessionfile = g_strdup(g_variant_get_string(data, NULL));
		sr_info("Setting sessionfile to '%s'.", vdev->sessionfile);
		break;
	case SR_CONF_CAPTUREFILE:
		g_free(vdev->capturefile);
		vdev->capturefile = g_strdup(g_variant_get_string(data, NULL));
		sr_info("Setting capturefile to '%s'.", vdev->capturefile);
		break;
	case SR_CONF_CAPTURE_UNITSIZE:
		vdev->unitsize = g_variant_get_uint64(data);
		break;
	case SR_CONF_NUM_LOGIC_CHANNELS:
		vdev->num_channels = g_variant_get_int32(data);
		break;
	case SR_CONF_NUM_ANALOG_CHANNELS:
		vdev->num_analog_channels = g_variant_get_int32(data);
		break;
	default:
		return SR_ERR_NA;
	}

	return SR_OK;
}

static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
		const struct sr_channel_group *cg)
{
	(void)sdi;
	(void)cg;

	switch (key) {
	case SR_CONF_DEVICE_OPTIONS:
		*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
				devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
		break;
	default:
		return SR_ERR_NA;
	}

	return SR_OK;
}

static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
{
	struct session_vdev *vdev;
	int ret;
	GSList *l;
	struct sr_channel *ch;

	(void)cb_data;

	vdev = sdi->priv;
	vdev->bytes_read = 0;
	vdev->cur_analog_channel = 0;
	vdev->analog_channels = g_array_sized_new(FALSE, FALSE,
			sizeof(struct sr_channel *), vdev->num_analog_channels);
	for (l = sdi->channels; l; l = l->next) {
		ch = l->data;
		if (ch->type == SR_CHANNEL_ANALOG)
			g_array_append_val(vdev->analog_channels, ch);
	}
	vdev->cur_chunk = 0;
	vdev->finished = FALSE;

	sr_info("Opening archive %s file %s", vdev->sessionfile,
		vdev->capturefile);

	if (!(vdev->archive = zip_open(vdev->sessionfile, 0, &ret))) {
		sr_err("Failed to open session file '%s': "
		       "zip error %d.", vdev->sessionfile, ret);
		return SR_ERR;
	}

	std_session_send_df_header(sdi, LOG_PREFIX);

	/* freewheeling source */
	sr_session_source_add(sdi->session, -1, 0, 0, receive_data, (void *)sdi);

	return SR_OK;
}

static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
{
	struct session_vdev *vdev;

	(void)cb_data;
	vdev = sdi->priv;

	vdev->finished = TRUE;

	return SR_OK;
}

/** @private */
SR_PRIV struct sr_dev_driver session_driver = {
	.name = "virtual-session",
	.longname = "Session-emulating driver",
	.api_version = 1,
	.init = init,
	.cleanup = dev_clear,
	.scan = NULL,
	.dev_list = NULL,
	.dev_clear = dev_clear,
	.config_get = config_get,
	.config_set = config_set,
	.config_list = config_list,
	.dev_open = dev_open,
	.dev_close = dev_close,
	.dev_acquisition_start = dev_acquisition_start,
	.dev_acquisition_stop = dev_acquisition_stop,
	.context = NULL,
};
Commit	Line	Data
7d658874	1	/*
50985c20	2	* This file is part of the libsigrok project.
7d658874	3	*
13d8e03c	4	* Copyright (C) 2013 Bert Vermeulen <bert@biot.com>
7d658874 BV	5	*
	6	* This program is free software: you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License as published by
	8	* the Free Software Foundation, either version 3 of the License, or
	9	* (at your option) any later version.
	10	*
	11	* This program is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	* GNU General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU General Public License
	17	* along with this program. If not, see <http://www.gnu.org/licenses/>.
	18	*/
	19
6ec6c43b	20	#include <config.h>
7d658874 BV	21	#include <sys/types.h>
	22	#include <sys/stat.h>
	23	#include <fcntl.h>
	24	#include <unistd.h>
	25	#include <sys/time.h>
	26	#include <zip.h>
c1aae900	27	#include <libsigrok/libsigrok.h>
45c59c8b	28	#include "libsigrok-internal.h"
7d658874	29
3544f848	30	#define LOG_PREFIX "virtual-session"
a885ce3e	31
7d658874	32	/* size of payloads sent across the session bus */
b4bd7088	33	/** @cond PRIVATE */
8ff6afc9	34	#define CHUNKSIZE (512 * 1024)
b4bd7088	35	/** @endcond */
7d658874	36
102f1239	37	SR_PRIV struct sr_dev_driver session_driver_info;
102f1239	38
bb7ef793	39	struct session_vdev {
40dda2c3	40	char *sessionfile;
7d658874 BV	41	char *capturefile;
	42	struct zip *archive;
	43	struct zip_file *capfile;
cb1e389c	44	int bytes_read;
7d658874 BV	45	uint64_t samplerate;
7d658874 BV	46	int unitsize;
fca75cbb	47	int num_channels;
b317d1bb	48	int num_analog_channels;
906921ba	49	int cur_analog_channel;
2dc40815	50	GArray *analog_channels;
f438e0c9	51	int cur_chunk;
aa48adf9	52	gboolean finished;
7d658874 BV	53	};
7d658874 BV	54
f254bc4b	55	static const uint32_t devopts[] = {
68ac991d BV	56	SR_CONF_CAPTUREFILE \| SR_CONF_SET,
68ac991d BV	57	SR_CONF_CAPTURE_UNITSIZE \| SR_CONF_GET \| SR_CONF_SET,
02e49ae5	58	SR_CONF_NUM_LOGIC_CHANNELS \| SR_CONF_SET,
b317d1bb	59	SR_CONF_NUM_ANALOG_CHANNELS \| SR_CONF_SET,
68ac991d	60	SR_CONF_SAMPLERATE \| SR_CONF_GET \| SR_CONF_SET,
02e49ae5	61	SR_CONF_SESSIONFILE \| SR_CONF_SET,
7d658874 BV	62	};
7d658874 BV	63
8d4097ff	64	static gboolean stream_session_data(struct sr_dev_inst *sdi)
7d658874	65	{
bb7ef793	66	struct session_vdev *vdev;
7d658874	67	struct sr_datafeed_packet packet;
9c939c51	68	struct sr_datafeed_logic logic;
2dc40815	69	struct sr_datafeed_analog_old analog;
f438e0c9	70	struct zip_stat zs;
7d658874	71	int ret, got_data;
f438e0c9 BV	72	char capturefile[16];
f438e0c9 BV	73	void *buf;
7d658874	74
7d658874	75	got_data = FALSE;
102f1239	76	vdev = sdi->priv;
7c69b528	77
8d4097ff DE	78	if (!vdev->capfile) {
	79	/* No capture file opened yet, or finished with the last
	80	* chunked one. */
7c69b528	81	if (vdev->capturefile && (vdev->cur_chunk == 0)) {
8d4097ff DE	82	/* capturefile is always the unchunked base name. */
	83	if (zip_stat(vdev->archive, vdev->capturefile, 0, &zs) != -1) {
	84	/* No chunks, just a single capture file. */
	85	vdev->cur_chunk = 0;
	86	if (!(vdev->capfile = zip_fopen(vdev->archive,
	87	vdev->capturefile, 0)))
	88	return FALSE;
	89	sr_dbg("Opened %s.", vdev->capturefile);
f438e0c9	90	} else {
8d4097ff DE	91	/* Try as first chunk filename. */
8d4097ff DE	92	snprintf(capturefile, 15, "%s-1", vdev->capturefile);
f438e0c9	93	if (zip_stat(vdev->archive, capturefile, 0, &zs) != -1) {
8d4097ff	94	vdev->cur_chunk = 1;
f438e0c9 BV	95	if (!(vdev->capfile = zip_fopen(vdev->archive,
	96	capturefile, 0)))
	97	return FALSE;
	98	sr_dbg("Opened %s.", capturefile);
	99	} else {
8d4097ff DE	100	sr_err("No capture file '%s' in " "session file '%s'.",
	101	vdev->capturefile, vdev->sessionfile);
	102	return FALSE;
f438e0c9 BV	103	}
f438e0c9 BV	104	}
7d658874	105	} else {
8d4097ff DE	106	/* Capture data is chunked, advance to the next chunk. */
	107	vdev->cur_chunk++;
	108	snprintf(capturefile, 15, "%s-%d", vdev->capturefile,
	109	vdev->cur_chunk);
	110	if (zip_stat(vdev->archive, capturefile, 0, &zs) != -1) {
	111	if (!(vdev->capfile = zip_fopen(vdev->archive,
	112	capturefile, 0)))
	113	return FALSE;
	114	sr_dbg("Opened %s.", capturefile);
906921ba ML	115	} else if (vdev->cur_analog_channel < vdev->num_analog_channels) {
906921ba ML	116	vdev->capturefile = g_strdup_printf("analog-1-%d",
e5b280e4	117	vdev->num_channels + vdev->cur_analog_channel + 1);
906921ba ML	118	vdev->cur_analog_channel++;
	119	vdev->cur_chunk = 0;
	120	return TRUE;
f438e0c9	121	} else {
8d4097ff DE	122	/* We got all the chunks, finish up. */
8d4097ff DE	123	return FALSE;
f438e0c9	124	}
7d658874 BV	125	}
	126	}
	127
8d4097ff DE	128	buf = g_malloc(CHUNKSIZE);
8d4097ff DE	129
9cfc695f SA	130	/* unitsize is not defined for purely analog session files. */
	131	if (vdev->unitsize)
	132	ret = zip_fread(vdev->capfile, buf,
	133	CHUNKSIZE / vdev->unitsize * vdev->unitsize);
	134	else
	135	ret = zip_fread(vdev->capfile, buf, CHUNKSIZE);
	136
8d4097ff	137	if (ret > 0) {
8d4097ff	138	got_data = TRUE;
2dc40815 ML	139	if (vdev->cur_analog_channel != 0) {
	140	packet.type = SR_DF_ANALOG_OLD;
	141	packet.payload = &analog;
	142	analog.channels = g_slist_prepend(NULL,
	143	g_array_index(vdev->analog_channels,
	144	struct sr_channel *, vdev->cur_analog_channel - 1));
	145	analog.num_samples = ret / sizeof(float);
	146	analog.mq = SR_MQ_VOLTAGE;
	147	analog.unit = SR_UNIT_VOLT;
	148	analog.mqflags = SR_MQFLAG_DC;
	149	analog.data = (float *) buf;
	150	} else {
	151	if (ret % vdev->unitsize != 0)
	152	sr_warn("Read size %d not a multiple of the"
	153	" unit size %d.", ret, vdev->unitsize);
	154	packet.type = SR_DF_LOGIC;
	155	packet.payload = &logic;
	156	logic.length = ret;
	157	logic.unitsize = vdev->unitsize;
	158	logic.data = buf;
	159	}
8d4097ff	160	vdev->bytes_read += ret;
102f1239	161	sr_session_send(sdi, &packet);
8d4097ff DE	162	} else {
	163	/* done with this capture file */
	164	zip_fclose(vdev->capfile);
	165	vdev->capfile = NULL;
	166	if (vdev->cur_chunk != 0) {
	167	/* There might be more chunks, so don't fall through
	168	* to the SR_DF_END here. */
	169	got_data = TRUE;
	170	}
7d658874	171	}
8d4097ff	172	g_free(buf);
7d658874	173
8d4097ff DE	174	return got_data;
	175	}
	176
	177	static int receive_data(int fd, int revents, void *cb_data)
	178	{
	179	struct sr_dev_inst *sdi;
	180	struct session_vdev *vdev;
8d4097ff DE	181
	182	(void)fd;
	183	(void)revents;
	184
	185	sdi = cb_data;
	186	vdev = sdi->priv;
	187
	188	if (!vdev->finished && !stream_session_data(sdi))
	189	vdev->finished = TRUE;
	190	if (!vdev->finished)
	191	return G_SOURCE_CONTINUE;
	192
	193	if (vdev->capfile) {
	194	zip_fclose(vdev->capfile);
	195	vdev->capfile = NULL;
	196	}
	197	if (vdev->archive) {
	198	zip_discard(vdev->archive);
	199	vdev->archive = NULL;
	200	}
3be42bc2 UH	201
3be42bc2 UH	202	std_session_send_df_end(sdi, LOG_PREFIX);
8d4097ff DE	203
8d4097ff DE	204	return G_SOURCE_REMOVE;
7d658874 BV	205	}
	206
	207	/* driver callbacks */
	208
4f840ce9	209	static int init(struct sr_dev_driver di, struct sr_context sr_ctx)
7d658874	210	{
102f1239	211	return std_init(sr_ctx, di, LOG_PREFIX);
7d658874 BV	212	}
7d658874 BV	213
4f840ce9	214	static int dev_clear(const struct sr_dev_driver *di)
7d658874	215	{
102f1239	216	struct drv_context *drvc;
7d658874 BV	217	GSList *l;
7d658874 BV	218
41812aca	219	drvc = di->context;
102f1239	220	for (l = drvc->instances; l; l = l->next)
d3683c42	221	sr_dev_inst_free(l->data);
102f1239 BV	222	g_slist_free(drvc->instances);
102f1239 BV	223	drvc->instances = NULL;
805e9640	224
57ab7d9f	225	return SR_OK;
7d658874 BV	226	}
7d658874 BV	227
6078d2c9	228	static int dev_open(struct sr_dev_inst *sdi)
7d658874	229	{
4f840ce9	230	struct sr_dev_driver *di;
102f1239	231	struct drv_context *drvc;
aa48adf9	232	struct session_vdev *vdev;
b53738ba	233
4f840ce9	234	di = sdi->driver;
41812aca	235	drvc = di->context;
102f1239	236	vdev = g_malloc0(sizeof(struct session_vdev));
aa48adf9	237	sdi->priv = vdev;
102f1239	238	drvc->instances = g_slist_append(drvc->instances, sdi);
7d658874 BV	239
	240	return SR_OK;
	241	}
	242
aa48adf9 BV	243	static int dev_close(struct sr_dev_inst *sdi)
aa48adf9 BV	244	{
8c9d4d67 JH	245	const struct session_vdev *const vdev = sdi->priv;
	246	g_free(vdev->sessionfile);
	247	g_free(vdev->capturefile);
	248
aa48adf9 BV	249	g_free(sdi->priv);
	250	sdi->priv = NULL;
	251
	252	return SR_OK;
	253	}
	254
584560f1	255	static int config_get(uint32_t key, GVariant *data, const struct sr_dev_inst sdi,
53b4680f	256	const struct sr_channel_group *cg)
7d658874	257	{
bb7ef793	258	struct session_vdev *vdev;
7d658874	259
53b4680f	260	(void)cg;
8f996b89	261
3f2cd87f UH	262	if (!sdi)
	263	return SR_ERR;
	264
	265	vdev = sdi->priv;
	266
584560f1	267	switch (key) {
123e1313	268	case SR_CONF_SAMPLERATE:
3f2cd87f UH	269	*data = g_variant_new_uint64(vdev->samplerate);
	270	break;
	271	case SR_CONF_CAPTURE_UNITSIZE:
	272	*data = g_variant_new_uint64(vdev->unitsize);
387014de BV	273	break;
387014de BV	274	default:
96ea73db	275	return SR_ERR_NA;
387014de	276	}
7d658874	277
387014de	278	return SR_OK;
7d658874 BV	279	}
7d658874 BV	280
584560f1	281	static int config_set(uint32_t key, GVariant data, const struct sr_dev_inst sdi,
53b4680f	282	const struct sr_channel_group *cg)
7d658874	283	{
bb7ef793	284	struct session_vdev *vdev;
7d658874	285
53b4680f	286	(void)cg;
8f996b89	287
6f4b1868	288	vdev = sdi->priv;
7d658874	289
584560f1	290	switch (key) {
1953564a	291	case SR_CONF_SAMPLERATE:
003595ac	292	vdev->samplerate = g_variant_get_uint64(data);
a885ce3e	293	sr_info("Setting samplerate to %" PRIu64 ".", vdev->samplerate);
7d658874	294	break;
1953564a	295	case SR_CONF_SESSIONFILE:
8c9d4d67	296	g_free(vdev->sessionfile);
003595ac	297	vdev->sessionfile = g_strdup(g_variant_get_string(data, NULL));
a885ce3e	298	sr_info("Setting sessionfile to '%s'.", vdev->sessionfile);
40dda2c3	299	break;
1953564a	300	case SR_CONF_CAPTUREFILE:
8c9d4d67	301	g_free(vdev->capturefile);
003595ac	302	vdev->capturefile = g_strdup(g_variant_get_string(data, NULL));
a885ce3e	303	sr_info("Setting capturefile to '%s'.", vdev->capturefile);
7d658874	304	break;
1953564a	305	case SR_CONF_CAPTURE_UNITSIZE:
003595ac	306	vdev->unitsize = g_variant_get_uint64(data);
7d658874	307	break;
3f239f08	308	case SR_CONF_NUM_LOGIC_CHANNELS:
2c38a41a	309	vdev->num_channels = g_variant_get_int32(data);
7d658874	310	break;
b317d1bb ML	311	case SR_CONF_NUM_ANALOG_CHANNELS:
	312	vdev->num_analog_channels = g_variant_get_int32(data);
	313	break;
7d658874	314	default:
96ea73db	315	return SR_ERR_NA;
7d658874 BV	316	}
	317
	318	return SR_OK;
	319	}
	320
584560f1	321	static int config_list(uint32_t key, GVariant *data, const struct sr_dev_inst sdi,
53b4680f	322	const struct sr_channel_group *cg)
9a6517d1	323	{
9a6517d1	324	(void)sdi;
53b4680f	325	(void)cg;
9a6517d1 BV	326
	327	switch (key) {
	328	case SR_CONF_DEVICE_OPTIONS:
584560f1	329	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
f254bc4b	330	devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
9a6517d1 BV	331	break;
9a6517d1 BV	332	default:
96ea73db	333	return SR_ERR_NA;
9a6517d1 BV	334	}
	335
	336	return SR_OK;
	337	}
	338
6078d2c9	339	static int dev_acquisition_start(const struct sr_dev_inst sdi, void cb_data)
7d658874	340	{
bb7ef793	341	struct session_vdev *vdev;
ebc34738	342	int ret;
2dc40815 ML	343	GSList *l;
2dc40815 ML	344	struct sr_channel *ch;
7d658874	345
102f1239	346	(void)cb_data;
7d658874	347
102f1239	348	vdev = sdi->priv;
8c9d4d67	349	vdev->bytes_read = 0;
906921ba	350	vdev->cur_analog_channel = 0;
2dc40815 ML	351	vdev->analog_channels = g_array_sized_new(FALSE, FALSE,
	352	sizeof(struct sr_channel *), vdev->num_analog_channels);
	353	for (l = sdi->channels; l; l = l->next) {
	354	ch = l->data;
	355	if (ch->type == SR_CHANNEL_ANALOG)
	356	g_array_append_val(vdev->analog_channels, ch);
	357	}
8c9d4d67 JH	358	vdev->cur_chunk = 0;
	359	vdev->finished = FALSE;
	360
a885ce3e	361	sr_info("Opening archive %s file %s", vdev->sessionfile,
bb7ef793	362	vdev->capturefile);
7d658874	363
40dda2c3	364	if (!(vdev->archive = zip_open(vdev->sessionfile, 0, &ret))) {
a885ce3e	365	sr_err("Failed to open session file '%s': "
9d122af8	366	"zip error %d.", vdev->sessionfile, ret);
7d658874 BV	367	return SR_ERR;
	368	}
	369
102f1239	370	std_session_send_df_header(sdi, LOG_PREFIX);
4afdfd46	371
7d658874	372	/* freewheeling source */
102f1239	373	sr_session_source_add(sdi->session, -1, 0, 0, receive_data, (void *)sdi);
7d658874	374
7d658874 BV	375	return SR_OK;
	376	}
	377
8d4097ff DE	378	static int dev_acquisition_stop(struct sr_dev_inst sdi, void cb_data)
	379	{
	380	struct session_vdev *vdev;
	381
	382	(void)cb_data;
	383	vdev = sdi->priv;
	384
	385	vdev->finished = TRUE;
	386
	387	return SR_OK;
	388	}
	389
b4bd7088	390	/** @private */
c09f0b57	391	SR_PRIV struct sr_dev_driver session_driver = {
a885ce3e	392	.name = "virtual-session",
5097b0d0 UH	393	.longname = "Session-emulating driver",
5097b0d0 UH	394	.api_version = 1,
6078d2c9	395	.init = init,
824fba03	396	.cleanup = dev_clear,
96ea73db UH	397	.scan = NULL,
96ea73db UH	398	.dev_list = NULL,
824fba03	399	.dev_clear = dev_clear,
035a1078 BV	400	.config_get = config_get,
035a1078 BV	401	.config_set = config_set,
9a6517d1	402	.config_list = config_list,
6078d2c9	403	.dev_open = dev_open,
aa48adf9	404	.dev_close = dev_close,
6078d2c9	405	.dev_acquisition_start = dev_acquisition_start,
8d4097ff	406	.dev_acquisition_stop = dev_acquisition_stop,
41812aca	407	.context = NULL,
7d658874	408	};