[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_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 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->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 {
				/* We got all the chunks, finish up. */
				return FALSE;
			}
		}
	}

	buf = g_malloc(CHUNKSIZE);

	ret = zip_fread(vdev->capfile, buf,
			CHUNKSIZE / vdev->unitsize * vdev->unitsize);
	if (ret > 0) {
		if (ret % vdev->unitsize != 0)
			sr_warn("Read size %d not a multiple of the"
				" unit size %d.", ret, vdev->unitsize);
		got_data = TRUE;
		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;
	struct sr_datafeed_packet packet;

	(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;
	}
	packet.type = SR_DF_END;
	packet.payload = NULL;
	sr_session_send(sdi, &packet);

	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;

	(void)cb_data;

	vdev = sdi->priv;
	vdev->bytes_read = 0;
	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;
	}

	/* Send header packet to the session bus. */
	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;
f438e0c9	49	int cur_chunk;
aa48adf9	50	gboolean finished;
7d658874 BV	51	};
7d658874 BV	52
f254bc4b	53	static const uint32_t devopts[] = {
68ac991d BV	54	SR_CONF_CAPTUREFILE \| SR_CONF_SET,
68ac991d BV	55	SR_CONF_CAPTURE_UNITSIZE \| SR_CONF_GET \| SR_CONF_SET,
02e49ae5	56	SR_CONF_NUM_LOGIC_CHANNELS \| SR_CONF_SET,
b317d1bb	57	SR_CONF_NUM_ANALOG_CHANNELS \| SR_CONF_SET,
68ac991d	58	SR_CONF_SAMPLERATE \| SR_CONF_GET \| SR_CONF_SET,
02e49ae5	59	SR_CONF_SESSIONFILE \| SR_CONF_SET,
7d658874 BV	60	};
7d658874 BV	61
8d4097ff	62	static gboolean stream_session_data(struct sr_dev_inst *sdi)
7d658874	63	{
bb7ef793	64	struct session_vdev *vdev;
7d658874	65	struct sr_datafeed_packet packet;
9c939c51	66	struct sr_datafeed_logic logic;
f438e0c9	67	struct zip_stat zs;
7d658874	68	int ret, got_data;
f438e0c9 BV	69	char capturefile[16];
f438e0c9 BV	70	void *buf;
7d658874	71
7d658874	72	got_data = FALSE;
102f1239	73	vdev = sdi->priv;
8d4097ff DE	74	if (!vdev->capfile) {
	75	/* No capture file opened yet, or finished with the last
	76	* chunked one. */
	77	if (vdev->cur_chunk == 0) {
	78	/* capturefile is always the unchunked base name. */
	79	if (zip_stat(vdev->archive, vdev->capturefile, 0, &zs) != -1) {
	80	/* No chunks, just a single capture file. */
	81	vdev->cur_chunk = 0;
	82	if (!(vdev->capfile = zip_fopen(vdev->archive,
	83	vdev->capturefile, 0)))
	84	return FALSE;
	85	sr_dbg("Opened %s.", vdev->capturefile);
f438e0c9	86	} else {
8d4097ff DE	87	/* Try as first chunk filename. */
8d4097ff DE	88	snprintf(capturefile, 15, "%s-1", vdev->capturefile);
f438e0c9	89	if (zip_stat(vdev->archive, capturefile, 0, &zs) != -1) {
8d4097ff	90	vdev->cur_chunk = 1;
f438e0c9 BV	91	if (!(vdev->capfile = zip_fopen(vdev->archive,
	92	capturefile, 0)))
	93	return FALSE;
	94	sr_dbg("Opened %s.", capturefile);
	95	} else {
8d4097ff DE	96	sr_err("No capture file '%s' in " "session file '%s'.",
	97	vdev->capturefile, vdev->sessionfile);
	98	return FALSE;
f438e0c9 BV	99	}
f438e0c9 BV	100	}
7d658874	101	} else {
8d4097ff DE	102	/* Capture data is chunked, advance to the next chunk. */
	103	vdev->cur_chunk++;
	104	snprintf(capturefile, 15, "%s-%d", vdev->capturefile,
	105	vdev->cur_chunk);
	106	if (zip_stat(vdev->archive, capturefile, 0, &zs) != -1) {
	107	if (!(vdev->capfile = zip_fopen(vdev->archive,
	108	capturefile, 0)))
	109	return FALSE;
	110	sr_dbg("Opened %s.", capturefile);
f438e0c9	111	} else {
8d4097ff DE	112	/* We got all the chunks, finish up. */
8d4097ff DE	113	return FALSE;
f438e0c9	114	}
7d658874 BV	115	}
	116	}
	117
8d4097ff DE	118	buf = g_malloc(CHUNKSIZE);
	119
	120	ret = zip_fread(vdev->capfile, buf,
	121	CHUNKSIZE / vdev->unitsize * vdev->unitsize);
	122	if (ret > 0) {
	123	if (ret % vdev->unitsize != 0)
	124	sr_warn("Read size %d not a multiple of the"
	125	" unit size %d.", ret, vdev->unitsize);
	126	got_data = TRUE;
	127	packet.type = SR_DF_LOGIC;
	128	packet.payload = &logic;
	129	logic.length = ret;
	130	logic.unitsize = vdev->unitsize;
	131	logic.data = buf;
	132	vdev->bytes_read += ret;
102f1239	133	sr_session_send(sdi, &packet);
8d4097ff DE	134	} else {
	135	/* done with this capture file */
	136	zip_fclose(vdev->capfile);
	137	vdev->capfile = NULL;
	138	if (vdev->cur_chunk != 0) {
	139	/* There might be more chunks, so don't fall through
	140	* to the SR_DF_END here. */
	141	got_data = TRUE;
	142	}
7d658874	143	}
8d4097ff	144	g_free(buf);
7d658874	145
8d4097ff DE	146	return got_data;
	147	}
	148
	149	static int receive_data(int fd, int revents, void *cb_data)
	150	{
	151	struct sr_dev_inst *sdi;
	152	struct session_vdev *vdev;
	153	struct sr_datafeed_packet packet;
	154
	155	(void)fd;
	156	(void)revents;
	157
	158	sdi = cb_data;
	159	vdev = sdi->priv;
	160
	161	if (!vdev->finished && !stream_session_data(sdi))
	162	vdev->finished = TRUE;
	163	if (!vdev->finished)
	164	return G_SOURCE_CONTINUE;
	165
	166	if (vdev->capfile) {
	167	zip_fclose(vdev->capfile);
	168	vdev->capfile = NULL;
	169	}
	170	if (vdev->archive) {
	171	zip_discard(vdev->archive);
	172	vdev->archive = NULL;
	173	}
	174	packet.type = SR_DF_END;
	175	packet.payload = NULL;
	176	sr_session_send(sdi, &packet);
	177
	178	return G_SOURCE_REMOVE;
7d658874 BV	179	}
	180
	181	/* driver callbacks */
	182
4f840ce9	183	static int init(struct sr_dev_driver di, struct sr_context sr_ctx)
7d658874	184	{
102f1239	185	return std_init(sr_ctx, di, LOG_PREFIX);
7d658874 BV	186	}
7d658874 BV	187
4f840ce9	188	static int dev_clear(const struct sr_dev_driver *di)
7d658874	189	{
102f1239	190	struct drv_context *drvc;
7d658874 BV	191	GSList *l;
7d658874 BV	192
41812aca	193	drvc = di->context;
102f1239	194	for (l = drvc->instances; l; l = l->next)
d3683c42	195	sr_dev_inst_free(l->data);
102f1239 BV	196	g_slist_free(drvc->instances);
102f1239 BV	197	drvc->instances = NULL;
805e9640	198
57ab7d9f	199	return SR_OK;
7d658874 BV	200	}
7d658874 BV	201
6078d2c9	202	static int dev_open(struct sr_dev_inst *sdi)
7d658874	203	{
4f840ce9	204	struct sr_dev_driver *di;
102f1239	205	struct drv_context *drvc;
aa48adf9	206	struct session_vdev *vdev;
b53738ba	207
4f840ce9	208	di = sdi->driver;
41812aca	209	drvc = di->context;
102f1239	210	vdev = g_malloc0(sizeof(struct session_vdev));
aa48adf9	211	sdi->priv = vdev;
102f1239	212	drvc->instances = g_slist_append(drvc->instances, sdi);
7d658874 BV	213
	214	return SR_OK;
	215	}
	216
aa48adf9 BV	217	static int dev_close(struct sr_dev_inst *sdi)
aa48adf9 BV	218	{
8c9d4d67 JH	219	const struct session_vdev *const vdev = sdi->priv;
	220	g_free(vdev->sessionfile);
	221	g_free(vdev->capturefile);
	222
aa48adf9 BV	223	g_free(sdi->priv);
	224	sdi->priv = NULL;
	225
	226	return SR_OK;
	227	}
	228
584560f1	229	static int config_get(uint32_t key, GVariant *data, const struct sr_dev_inst sdi,
53b4680f	230	const struct sr_channel_group *cg)
7d658874	231	{
bb7ef793	232	struct session_vdev *vdev;
7d658874	233
53b4680f	234	(void)cg;
8f996b89	235
3f2cd87f UH	236	if (!sdi)
	237	return SR_ERR;
	238
	239	vdev = sdi->priv;
	240
584560f1	241	switch (key) {
123e1313	242	case SR_CONF_SAMPLERATE:
3f2cd87f UH	243	*data = g_variant_new_uint64(vdev->samplerate);
	244	break;
	245	case SR_CONF_CAPTURE_UNITSIZE:
	246	*data = g_variant_new_uint64(vdev->unitsize);
387014de BV	247	break;
387014de BV	248	default:
96ea73db	249	return SR_ERR_NA;
387014de	250	}
7d658874	251
387014de	252	return SR_OK;
7d658874 BV	253	}
7d658874 BV	254
584560f1	255	static int config_set(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
6f4b1868	262	vdev = sdi->priv;
7d658874	263
584560f1	264	switch (key) {
1953564a	265	case SR_CONF_SAMPLERATE:
003595ac	266	vdev->samplerate = g_variant_get_uint64(data);
a885ce3e	267	sr_info("Setting samplerate to %" PRIu64 ".", vdev->samplerate);
7d658874	268	break;
1953564a	269	case SR_CONF_SESSIONFILE:
8c9d4d67	270	g_free(vdev->sessionfile);
003595ac	271	vdev->sessionfile = g_strdup(g_variant_get_string(data, NULL));
a885ce3e	272	sr_info("Setting sessionfile to '%s'.", vdev->sessionfile);
40dda2c3	273	break;
1953564a	274	case SR_CONF_CAPTUREFILE:
8c9d4d67	275	g_free(vdev->capturefile);
003595ac	276	vdev->capturefile = g_strdup(g_variant_get_string(data, NULL));
a885ce3e	277	sr_info("Setting capturefile to '%s'.", vdev->capturefile);
7d658874	278	break;
1953564a	279	case SR_CONF_CAPTURE_UNITSIZE:
003595ac	280	vdev->unitsize = g_variant_get_uint64(data);
7d658874	281	break;
3f239f08	282	case SR_CONF_NUM_LOGIC_CHANNELS:
2c38a41a	283	vdev->num_channels = g_variant_get_int32(data);
7d658874	284	break;
b317d1bb ML	285	case SR_CONF_NUM_ANALOG_CHANNELS:
	286	vdev->num_analog_channels = g_variant_get_int32(data);
	287	break;
7d658874	288	default:
96ea73db	289	return SR_ERR_NA;
7d658874 BV	290	}
	291
	292	return SR_OK;
	293	}
	294
584560f1	295	static int config_list(uint32_t key, GVariant *data, const struct sr_dev_inst sdi,
53b4680f	296	const struct sr_channel_group *cg)
9a6517d1	297	{
9a6517d1	298	(void)sdi;
53b4680f	299	(void)cg;
9a6517d1 BV	300
	301	switch (key) {
	302	case SR_CONF_DEVICE_OPTIONS:
584560f1	303	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
f254bc4b	304	devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
9a6517d1 BV	305	break;
9a6517d1 BV	306	default:
96ea73db	307	return SR_ERR_NA;
9a6517d1 BV	308	}
	309
	310	return SR_OK;
	311	}
	312
6078d2c9	313	static int dev_acquisition_start(const struct sr_dev_inst sdi, void cb_data)
7d658874	314	{
bb7ef793	315	struct session_vdev *vdev;
ebc34738	316	int ret;
7d658874	317
102f1239	318	(void)cb_data;
7d658874	319
102f1239	320	vdev = sdi->priv;
8c9d4d67 JH	321	vdev->bytes_read = 0;
	322	vdev->cur_chunk = 0;
	323	vdev->finished = FALSE;
	324
a885ce3e	325	sr_info("Opening archive %s file %s", vdev->sessionfile,
bb7ef793	326	vdev->capturefile);
7d658874	327
40dda2c3	328	if (!(vdev->archive = zip_open(vdev->sessionfile, 0, &ret))) {
a885ce3e	329	sr_err("Failed to open session file '%s': "
9d122af8	330	"zip error %d.", vdev->sessionfile, ret);
7d658874 BV	331	return SR_ERR;
	332	}
	333
4afdfd46	334	/* Send header packet to the session bus. */
102f1239	335	std_session_send_df_header(sdi, LOG_PREFIX);
4afdfd46	336
7d658874	337	/* freewheeling source */
102f1239	338	sr_session_source_add(sdi->session, -1, 0, 0, receive_data, (void *)sdi);
7d658874	339
7d658874 BV	340	return SR_OK;
	341	}
	342
8d4097ff DE	343	static int dev_acquisition_stop(struct sr_dev_inst sdi, void cb_data)
	344	{
	345	struct session_vdev *vdev;
	346
	347	(void)cb_data;
	348	vdev = sdi->priv;
	349
	350	vdev->finished = TRUE;
	351
	352	return SR_OK;
	353	}
	354
b4bd7088	355	/** @private */
c09f0b57	356	SR_PRIV struct sr_dev_driver session_driver = {
a885ce3e	357	.name = "virtual-session",
5097b0d0 UH	358	.longname = "Session-emulating driver",
5097b0d0 UH	359	.api_version = 1,
6078d2c9	360	.init = init,
824fba03	361	.cleanup = dev_clear,
96ea73db UH	362	.scan = NULL,
96ea73db UH	363	.dev_list = NULL,
824fba03	364	.dev_clear = dev_clear,
035a1078 BV	365	.config_get = config_get,
035a1078 BV	366	.config_set = config_set,
9a6517d1	367	.config_list = config_list,
6078d2c9	368	.dev_open = dev_open,
aa48adf9	369	.dev_close = dev_close,
6078d2c9	370	.dev_acquisition_start = dev_acquisition_start,
8d4097ff	371	.dev_acquisition_stop = dev_acquisition_stop,
41812aca	372	.context = NULL,
7d658874	373	};