[libsigrok.git] / src / output / srzip.c

/*
 * This file is part of the libsigrok project.
 *
 * Copyright (C) 2014 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 <stdlib.h>
#include <string.h>
#include <errno.h>
#include <glib.h>
#include <glib/gstdio.h>
#include <zip.h>
#include <libsigrok/libsigrok.h>
#include "libsigrok-internal.h"

#define LOG_PREFIX "output/srzip"

struct out_context {
	gboolean zip_created;
	uint64_t samplerate;
	char *filename;
	gint min_analog_index;
};

static int init(struct sr_output *o, GHashTable *options)
{
	struct out_context *outc;

	(void)options;

	if (!o->filename || o->filename[0] == '\0') {
		sr_info("srzip output module requires a file name, cannot save.");
		return SR_ERR_ARG;
	}

	outc = g_malloc0(sizeof(struct out_context));
	outc->filename = g_strdup(o->filename);
	o->priv = outc;

	return SR_OK;
}

static int zip_create(const struct sr_output *o)
{
	struct out_context *outc;
	struct zip *zipfile;
	struct zip_source *versrc, *metasrc;
	struct sr_channel *ch;
	GVariant *gvar;
	GKeyFile *meta;
	GSList *l;
	const char *devgroup;
	char *s, *metabuf;
	gsize metalen;
	guint logic_channels = 0, analog_channels = 0;

	outc = o->priv;

	if (outc->samplerate == 0 && sr_config_get(o->sdi->driver, o->sdi, NULL,
					SR_CONF_SAMPLERATE, &gvar) == SR_OK) {
		outc->samplerate = g_variant_get_uint64(gvar);
		g_variant_unref(gvar);
	}

	/* Quietly delete it first, libzip wants replace ops otherwise. */
	g_unlink(outc->filename);
	zipfile = zip_open(outc->filename, ZIP_CREATE, NULL);
	if (!zipfile)
		return SR_ERR;

	/* "version" */
	versrc = zip_source_buffer(zipfile, "2", 1, FALSE);
	if (zip_add(zipfile, "version", versrc) < 0) {
		sr_err("Error saving version into zipfile: %s",
			zip_strerror(zipfile));
		zip_source_free(versrc);
		zip_discard(zipfile);
		return SR_ERR;
	}

	/* init "metadata" */
	meta = g_key_file_new();

	g_key_file_set_string(meta, "global", "sigrok version",
			SR_PACKAGE_VERSION_STRING);

	devgroup = "device 1";
	g_key_file_set_string(meta, devgroup, "capturefile", "logic-1");

	s = sr_samplerate_string(outc->samplerate);
	g_key_file_set_string(meta, devgroup, "samplerate", s);
	g_free(s);

	outc->min_analog_index = -1;

	for (l = o->sdi->channels; l; l = l->next) {
		ch = l->data;
		switch (ch->type) {
		case SR_CHANNEL_LOGIC:
			logic_channels++;
			break;
		case SR_CHANNEL_ANALOG:
			if (outc->min_analog_index == -1 ||
					ch->index < outc->min_analog_index)
				outc->min_analog_index = ch->index;
			analog_channels++;
			break;
		}
	}

	g_key_file_set_integer(meta, devgroup, "total probes", logic_channels);
	g_key_file_set_integer(meta, devgroup, "total analog", analog_channels);

	for (l = o->sdi->channels; l; l = l->next) {
		ch = l->data;
		switch (ch->type) {
		case SR_CHANNEL_LOGIC:
			s = g_strdup_printf("probe%d", ch->index + 1);
			break;
		case SR_CHANNEL_ANALOG:
			s = g_strdup_printf("analog%d",
					ch->index - outc->min_analog_index + 1);
			break;
		}
		if (ch->enabled)
			g_key_file_set_string(meta, devgroup, s, ch->name);
		g_free(s);
	}

	metabuf = g_key_file_to_data(meta, &metalen, NULL);
	g_key_file_free(meta);

	metasrc = zip_source_buffer(zipfile, metabuf, metalen, FALSE);
	if (zip_add(zipfile, "metadata", metasrc) < 0) {
		sr_err("Error saving metadata into zipfile: %s",
			zip_strerror(zipfile));
		zip_source_free(metasrc);
		zip_discard(zipfile);
		g_free(metabuf);
		return SR_ERR;
	}

	if (zip_close(zipfile) < 0) {
		sr_err("Error saving zipfile: %s", zip_strerror(zipfile));
		zip_discard(zipfile);
		g_free(metabuf);
		return SR_ERR;
	}
	g_free(metabuf);

	return SR_OK;
}

static int zip_append(const struct sr_output *o, unsigned char *buf,
		int unitsize, int length)
{
	struct out_context *outc;
	struct zip *archive;
	struct zip_source *logicsrc;
	int64_t i, num_files;
	struct zip_stat zs;
	struct zip_source *metasrc;
	GKeyFile *kf;
	GError *error;
	uint64_t chunk_num;
	const char *entry_name;
	char *metabuf;
	gsize metalen;
	char *chunkname;
	unsigned int next_chunk_num;

	outc = o->priv;
	if (!(archive = zip_open(outc->filename, 0, NULL)))
		return SR_ERR;

	if (zip_stat(archive, "metadata", 0, &zs) < 0) {
		sr_err("Failed to open metadata: %s", zip_strerror(archive));
		zip_discard(archive);
		return SR_ERR;
	}
	kf = sr_sessionfile_read_metadata(archive, &zs);
	if (!kf) {
		zip_discard(archive);
		return SR_ERR_DATA;
	}
	/*
	 * If the file was only initialized but doesn't yet have any
	 * data it in, it won't have a unitsize field in metadata yet.
	 */
	error = NULL;
	metabuf = NULL;
	if (!g_key_file_has_key(kf, "device 1", "unitsize", &error)) {
		if (error && error->code != G_KEY_FILE_ERROR_KEY_NOT_FOUND) {
			sr_err("Failed to check unitsize key: %s", error->message);
			g_error_free(error);
			g_key_file_free(kf);
			zip_discard(archive);
			return SR_ERR;
		}
		g_clear_error(&error);

		/* Add unitsize field. */
		g_key_file_set_integer(kf, "device 1", "unitsize", unitsize);
		metabuf = g_key_file_to_data(kf, &metalen, NULL);
		metasrc = zip_source_buffer(archive, metabuf, metalen, FALSE);

		if (zip_replace(archive, zs.index, metasrc) < 0) {
			sr_err("Failed to replace metadata: %s",
				zip_strerror(archive));
			g_key_file_free(kf);
			zip_source_free(metasrc);
			zip_discard(archive);
			g_free(metabuf);
			return SR_ERR;
		}
	}
	g_key_file_free(kf);

	next_chunk_num = 1;
	num_files = zip_get_num_entries(archive, 0);
	for (i = 0; i < num_files; i++) {
		entry_name = zip_get_name(archive, i, 0);
		if (!entry_name || strncmp(entry_name, "logic-1", 7) != 0)
			continue;
		if (entry_name[7] == '\0') {
			/* This file has no extra chunks, just a single "logic-1".
			 * Rename it to "logic-1-1" * and continue with chunk 2. */
			if (zip_rename(archive, i, "logic-1-1") < 0) {
				sr_err("Failed to rename 'logic-1' to 'logic-1-1': %s",
					zip_strerror(archive));
				zip_discard(archive);
				g_free(metabuf);
				return SR_ERR;
			}
			next_chunk_num = 2;
			break;
		} else if (entry_name[7] == '-') {
			chunk_num = g_ascii_strtoull(entry_name + 8, NULL, 10);
			if (chunk_num < G_MAXINT && chunk_num >= next_chunk_num)
				next_chunk_num = chunk_num + 1;
		}
	}

	if (length % unitsize != 0) {
		sr_warn("Chunk size %d not a multiple of the"
			" unit size %d.", length, unitsize);
	}
	logicsrc = zip_source_buffer(archive, buf, length, FALSE);
	chunkname = g_strdup_printf("logic-1-%u", next_chunk_num);
	i = zip_add(archive, chunkname, logicsrc);
	g_free(chunkname);
	if (i < 0) {
		sr_err("Failed to add chunk 'logic-1-%u': %s",
			next_chunk_num, zip_strerror(archive));
		zip_source_free(logicsrc);
		zip_discard(archive);
		g_free(metabuf);
		return SR_ERR;
	}
	if (zip_close(archive) < 0) {
		sr_err("Error saving session file: %s", zip_strerror(archive));
		zip_discard(archive);
		g_free(metabuf);
		return SR_ERR;
	}
	g_free(metabuf);

	return SR_OK;
}

static int zip_append_analog(const struct sr_output *o,
		const struct sr_datafeed_analog *analog)
{
	struct out_context *outc;
	struct zip *archive;
	struct zip_source *analogsrc;
	int64_t i, num_files;
	struct zip_stat zs;
	uint64_t chunk_num;
	const char *entry_name;
	char *basename;
	gsize baselen;
	struct sr_channel *channel;
	float *chunkbuf;
	gsize chunksize;
	char *chunkname;
	unsigned int next_chunk_num;

	outc = o->priv;
	if (!(archive = zip_open(outc->filename, 0, NULL)))
		return SR_ERR;

	if (zip_stat(archive, "metadata", 0, &zs) < 0) {
		sr_err("Failed to open metadata: %s", zip_strerror(archive));
		zip_discard(archive);
		return SR_ERR;
	}

	/* TODO: support packets covering multiple channels */
	if (g_slist_length(analog->meaning->channels) != 1) {
		sr_err("Analog packets covering multiple channels not supported yet");
		return SR_ERR;
	}
	channel = analog->meaning->channels->data;

	basename = g_strdup_printf("analog-1-%u",
			channel->index - outc->min_analog_index + 1);
	baselen = strlen(basename);
	next_chunk_num = 1;
	num_files = zip_get_num_entries(archive, 0);
	for (i = 0; i < num_files; i++) {
		entry_name = zip_get_name(archive, i, 0);
		if (!entry_name || strncmp(entry_name, basename, baselen) != 0) {
			continue;
		} else if (entry_name[baselen] == '-') {
			chunk_num = g_ascii_strtoull(entry_name + baselen + 1, NULL, 10);
			if (chunk_num < G_MAXINT && chunk_num >= next_chunk_num)
				next_chunk_num = chunk_num + 1;
		}
	}

	chunksize = sizeof(float) * analog->num_samples;
	if (!(chunkbuf = g_try_malloc(chunksize)))
		return SR_ERR;
	if (sr_analog_to_float(analog, chunkbuf) != SR_OK)
		return SR_ERR;

	analogsrc = zip_source_buffer(archive, chunkbuf, chunksize, FALSE);
	chunkname = g_strdup_printf("%s-%u", basename, next_chunk_num);
	i = zip_add(archive, chunkname, analogsrc);
	g_free(chunkname);
	if (i < 0) {
		sr_err("Failed to add chunk '%s': %s", chunkname, zip_strerror(archive));
		zip_source_free(analogsrc);
		zip_discard(archive);
		return SR_ERR;
	}
	if (zip_close(archive) < 0) {
		sr_err("Error saving session file: %s", zip_strerror(archive));
		zip_discard(archive);
		return SR_ERR;
	}

	return SR_OK;
}

static int receive(const struct sr_output *o, const struct sr_datafeed_packet *packet,
		GString **out)
{
	struct out_context *outc;
	const struct sr_datafeed_meta *meta;
	const struct sr_datafeed_logic *logic;
	const struct sr_datafeed_analog *analog;
	const struct sr_config *src;
	GSList *l;

	int ret;

	*out = NULL;
	if (!o || !o->sdi || !(outc = o->priv))
		return SR_ERR_ARG;

	switch (packet->type) {
	case SR_DF_META:
		meta = packet->payload;
		for (l = meta->config; l; l = l->next) {
			src = l->data;
			if (src->key != SR_CONF_SAMPLERATE)
				continue;
			outc->samplerate = g_variant_get_uint64(src->data);
		}
		break;
	case SR_DF_LOGIC:
		if (!outc->zip_created) {
			if ((ret = zip_create(o)) != SR_OK)
				return ret;
			outc->zip_created = TRUE;
		}
		logic = packet->payload;
		ret = zip_append(o, logic->data, logic->unitsize, logic->length);
		if (ret != SR_OK)
			return ret;
		break;
	case SR_DF_ANALOG:
		if (!outc->zip_created) {
			if ((ret = zip_create(o)) != SR_OK)
				return ret;
			outc->zip_created = TRUE;
		}
		analog = packet->payload;
		ret = zip_append_analog(o, analog);
		if (ret != SR_OK)
			return ret;
		break;
	}

	return SR_OK;
}

static struct sr_option options[] = {
	ALL_ZERO
};

static const struct sr_option *get_options(void)
{
	if (!options[0].def)
		options[0].def = g_variant_ref_sink(g_variant_new_string(""));

	return options;
}

static int cleanup(struct sr_output *o)
{
	struct out_context *outc;

	outc = o->priv;
	g_variant_unref(options[0].def);
	g_free(outc->filename);
	g_free(outc);
	o->priv = NULL;

	return SR_OK;
}

SR_PRIV struct sr_output_module output_srzip = {
	.id = "srzip",
	.name = "srzip",
	.desc = "srzip session file",
	.exts = (const char*[]){"sr", NULL},
	.flags = SR_OUTPUT_INTERNAL_IO_HANDLING,
	.options = get_options,
	.init = init,
	.receive = receive,
	.cleanup = cleanup,
};
Commit	Line	Data
3250d8c7 BV	1	/*
	2	* This file is part of the libsigrok project.
	3	*
	4	* Copyright (C) 2014 Bert Vermeulen <bert@biot.com>
	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>
3250d8c7	21	#include <stdlib.h>
3250d8c7 BV	22	#include <string.h>
	23	#include <errno.h>
	24	#include <glib.h>
	25	#include <glib/gstdio.h>
	26	#include <zip.h>
c1aae900	27	#include <libsigrok/libsigrok.h>
3250d8c7 BV	28	#include "libsigrok-internal.h"
	29
	30	#define LOG_PREFIX "output/srzip"
	31
	32	struct out_context {
	33	gboolean zip_created;
	34	uint64_t samplerate;
	35	char *filename;
26918dce	36	gint min_analog_index;
3250d8c7 BV	37	};
	38
	39	static int init(struct sr_output o, GHashTable options)
	40	{
	41	struct out_context *outc;
	42
37875f75 SA	43	(void)options;
37875f75 SA	44
98654c99	45	if (!o->filename \|\| o->filename[0] == '\0') {
37875f75	46	sr_info("srzip output module requires a file name, cannot save.");
3250d8c7	47	return SR_ERR_ARG;
37875f75	48	}
7df31ae8 SA	49
7df31ae8 SA	50	outc = g_malloc0(sizeof(struct out_context));
37875f75	51	outc->filename = g_strdup(o->filename);
7df31ae8	52	o->priv = outc;
3250d8c7 BV	53
	54	return SR_OK;
	55	}
	56
	57	static int zip_create(const struct sr_output *o)
	58	{
	59	struct out_context *outc;
3250d8c7 BV	60	struct zip *zipfile;
3250d8c7 BV	61	struct zip_source versrc, metasrc;
98654c99	62	struct sr_channel *ch;
3250d8c7	63	GVariant *gvar;
98654c99	64	GKeyFile *meta;
3250d8c7	65	GSList *l;
98654c99 DE	66	const char *devgroup;
	67	char s, metabuf;
	68	gsize metalen;
eab05299	69	guint logic_channels = 0, analog_channels = 0;
3250d8c7 BV	70
3250d8c7 BV	71	outc = o->priv;
98654c99 DE	72
	73	if (outc->samplerate == 0 && sr_config_get(o->sdi->driver, o->sdi, NULL,
	74	SR_CONF_SAMPLERATE, &gvar) == SR_OK) {
	75	outc->samplerate = g_variant_get_uint64(gvar);
	76	g_variant_unref(gvar);
3250d8c7 BV	77	}
	78
	79	/* Quietly delete it first, libzip wants replace ops otherwise. */
98654c99 DE	80	g_unlink(outc->filename);
	81	zipfile = zip_open(outc->filename, ZIP_CREATE, NULL);
	82	if (!zipfile)
3250d8c7 BV	83	return SR_ERR;
	84
	85	/* "version" */
98654c99	86	versrc = zip_source_buffer(zipfile, "2", 1, FALSE);
eaa6a7a3	87	if (zip_add(zipfile, "version", versrc) < 0) {
98654c99	88	sr_err("Error saving version into zipfile: %s",
3250d8c7	89	zip_strerror(zipfile));
98654c99 DE	90	zip_source_free(versrc);
98654c99 DE	91	zip_discard(zipfile);
3250d8c7 BV	92	return SR_ERR;
	93	}
	94
	95	/* init "metadata" */
98654c99 DE	96	meta = g_key_file_new();
	97
	98	g_key_file_set_string(meta, "global", "sigrok version",
	99	SR_PACKAGE_VERSION_STRING);
	100
	101	devgroup = "device 1";
	102	g_key_file_set_string(meta, devgroup, "capturefile", "logic-1");
	103
3250d8c7	104	s = sr_samplerate_string(outc->samplerate);
98654c99	105	g_key_file_set_string(meta, devgroup, "samplerate", s);
3250d8c7 BV	106	g_free(s);
3250d8c7 BV	107
26918dce ML	108	outc->min_analog_index = -1;
26918dce ML	109
82883219 ML	110	for (l = o->sdi->channels; l; l = l->next) {
82883219 ML	111	ch = l->data;
eab05299	112	switch (ch->type) {
74a9c0ad UH	113	case SR_CHANNEL_LOGIC:
	114	logic_channels++;
	115	break;
	116	case SR_CHANNEL_ANALOG:
	117	if (outc->min_analog_index == -1 \|\|
	118	ch->index < outc->min_analog_index)
	119	outc->min_analog_index = ch->index;
	120	analog_channels++;
	121	break;
eab05299	122	}
82883219 ML	123	}
	124
	125	g_key_file_set_integer(meta, devgroup, "total probes", logic_channels);
eab05299	126	g_key_file_set_integer(meta, devgroup, "total analog", analog_channels);
82883219	127
3250d8c7 BV	128	for (l = o->sdi->channels; l; l = l->next) {
3250d8c7 BV	129	ch = l->data;
eab05299	130	switch (ch->type) {
74a9c0ad UH	131	case SR_CHANNEL_LOGIC:
	132	s = g_strdup_printf("probe%d", ch->index + 1);
	133	break;
	134	case SR_CHANNEL_ANALOG:
	135	s = g_strdup_printf("analog%d",
	136	ch->index - outc->min_analog_index + 1);
	137	break;
98654c99	138	}
eab05299 ML	139	if (ch->enabled)
	140	g_key_file_set_string(meta, devgroup, s, ch->name);
	141	g_free(s);
3250d8c7	142	}
82883219	143
98654c99 DE	144	metabuf = g_key_file_to_data(meta, &metalen, NULL);
98654c99 DE	145	g_key_file_free(meta);
3250d8c7	146
98654c99	147	metasrc = zip_source_buffer(zipfile, metabuf, metalen, FALSE);
eaa6a7a3	148	if (zip_add(zipfile, "metadata", metasrc) < 0) {
98654c99 DE	149	sr_err("Error saving metadata into zipfile: %s",
	150	zip_strerror(zipfile));
	151	zip_source_free(metasrc);
	152	zip_discard(zipfile);
	153	g_free(metabuf);
3250d8c7 BV	154	return SR_ERR;
	155	}
	156
98654c99 DE	157	if (zip_close(zipfile) < 0) {
	158	sr_err("Error saving zipfile: %s", zip_strerror(zipfile));
	159	zip_discard(zipfile);
	160	g_free(metabuf);
3250d8c7 BV	161	return SR_ERR;
3250d8c7 BV	162	}
98654c99	163	g_free(metabuf);
3250d8c7 BV	164
	165	return SR_OK;
	166	}
	167
	168	static int zip_append(const struct sr_output o, unsigned char buf,
	169	int unitsize, int length)
	170	{
	171	struct out_context *outc;
	172	struct zip *archive;
	173	struct zip_source *logicsrc;
98654c99	174	int64_t i, num_files;
3250d8c7 BV	175	struct zip_stat zs;
	176	struct zip_source *metasrc;
	177	GKeyFile *kf;
	178	GError *error;
98654c99	179	uint64_t chunk_num;
3250d8c7	180	const char *entry_name;
98654c99 DE	181	char *metabuf;
	182	gsize metalen;
	183	char *chunkname;
	184	unsigned int next_chunk_num;
3250d8c7 BV	185
3250d8c7 BV	186	outc = o->priv;
98654c99	187	if (!(archive = zip_open(outc->filename, 0, NULL)))
3250d8c7 BV	188	return SR_ERR;
3250d8c7 BV	189
98654c99 DE	190	if (zip_stat(archive, "metadata", 0, &zs) < 0) {
	191	sr_err("Failed to open metadata: %s", zip_strerror(archive));
	192	zip_discard(archive);
3250d8c7	193	return SR_ERR;
98654c99 DE	194	}
	195	kf = sr_sessionfile_read_metadata(archive, &zs);
	196	if (!kf) {
	197	zip_discard(archive);
	198	return SR_ERR_DATA;
	199	}
3250d8c7 BV	200	/*
	201	* If the file was only initialized but doesn't yet have any
	202	* data it in, it won't have a unitsize field in metadata yet.
	203	*/
	204	error = NULL;
98654c99	205	metabuf = NULL;
3250d8c7 BV	206	if (!g_key_file_has_key(kf, "device 1", "unitsize", &error)) {
3250d8c7 BV	207	if (error && error->code != G_KEY_FILE_ERROR_KEY_NOT_FOUND) {
98654c99 DE	208	sr_err("Failed to check unitsize key: %s", error->message);
	209	g_error_free(error);
	210	g_key_file_free(kf);
	211	zip_discard(archive);
3250d8c7 BV	212	return SR_ERR;
3250d8c7 BV	213	}
98654c99 DE	214	g_clear_error(&error);
98654c99 DE	215
3250d8c7 BV	216	/* Add unitsize field. */
3250d8c7 BV	217	g_key_file_set_integer(kf, "device 1", "unitsize", unitsize);
98654c99 DE	218	metabuf = g_key_file_to_data(kf, &metalen, NULL);
	219	metasrc = zip_source_buffer(archive, metabuf, metalen, FALSE);
	220
	221	if (zip_replace(archive, zs.index, metasrc) < 0) {
	222	sr_err("Failed to replace metadata: %s",
	223	zip_strerror(archive));
	224	g_key_file_free(kf);
	225	zip_source_free(metasrc);
	226	zip_discard(archive);
	227	g_free(metabuf);
3250d8c7 BV	228	return SR_ERR;
3250d8c7 BV	229	}
3250d8c7 BV	230	}
	231	g_key_file_free(kf);
	232
	233	next_chunk_num = 1;
	234	num_files = zip_get_num_entries(archive, 0);
	235	for (i = 0; i < num_files; i++) {
	236	entry_name = zip_get_name(archive, i, 0);
98654c99	237	if (!entry_name \|\| strncmp(entry_name, "logic-1", 7) != 0)
3250d8c7	238	continue;
98654c99	239	if (entry_name[7] == '\0') {
3250d8c7 BV	240	/* This file has no extra chunks, just a single "logic-1".
3250d8c7 BV	241	* Rename it to "logic-1-1" * and continue with chunk 2. */
98654c99 DE	242	if (zip_rename(archive, i, "logic-1-1") < 0) {
	243	sr_err("Failed to rename 'logic-1' to 'logic-1-1': %s",
	244	zip_strerror(archive));
	245	zip_discard(archive);
	246	g_free(metabuf);
3250d8c7 BV	247	return SR_ERR;
	248	}
	249	next_chunk_num = 2;
	250	break;
98654c99 DE	251	} else if (entry_name[7] == '-') {
	252	chunk_num = g_ascii_strtoull(entry_name + 8, NULL, 10);
	253	if (chunk_num < G_MAXINT && chunk_num >= next_chunk_num)
3250d8c7 BV	254	next_chunk_num = chunk_num + 1;
	255	}
	256	}
98654c99 DE	257
	258	if (length % unitsize != 0) {
	259	sr_warn("Chunk size %d not a multiple of the"
	260	" unit size %d.", length, unitsize);
3250d8c7	261	}
98654c99 DE	262	logicsrc = zip_source_buffer(archive, buf, length, FALSE);
	263	chunkname = g_strdup_printf("logic-1-%u", next_chunk_num);
	264	i = zip_add(archive, chunkname, logicsrc);
	265	g_free(chunkname);
	266	if (i < 0) {
	267	sr_err("Failed to add chunk 'logic-1-%u': %s",
	268	next_chunk_num, zip_strerror(archive));
	269	zip_source_free(logicsrc);
	270	zip_discard(archive);
	271	g_free(metabuf);
3250d8c7 BV	272	return SR_ERR;
3250d8c7 BV	273	}
98654c99 DE	274	if (zip_close(archive) < 0) {
	275	sr_err("Error saving session file: %s", zip_strerror(archive));
	276	zip_discard(archive);
	277	g_free(metabuf);
3250d8c7 BV	278	return SR_ERR;
3250d8c7 BV	279	}
98654c99	280	g_free(metabuf);
3250d8c7 BV	281
	282	return SR_OK;
	283	}
	284
7163dcbe ML	285	static int zip_append_analog(const struct sr_output *o,
	286	const struct sr_datafeed_analog *analog)
	287	{
	288	struct out_context *outc;
	289	struct zip *archive;
	290	struct zip_source *analogsrc;
	291	int64_t i, num_files;
	292	struct zip_stat zs;
	293	uint64_t chunk_num;
	294	const char *entry_name;
	295	char *basename;
	296	gsize baselen;
	297	struct sr_channel *channel;
	298	float *chunkbuf;
	299	gsize chunksize;
	300	char *chunkname;
	301	unsigned int next_chunk_num;
	302
	303	outc = o->priv;
	304	if (!(archive = zip_open(outc->filename, 0, NULL)))
	305	return SR_ERR;
	306
	307	if (zip_stat(archive, "metadata", 0, &zs) < 0) {
	308	sr_err("Failed to open metadata: %s", zip_strerror(archive));
	309	zip_discard(archive);
	310	return SR_ERR;
	311	}
	312
	313	/* TODO: support packets covering multiple channels */
	314	if (g_slist_length(analog->meaning->channels) != 1) {
	315	sr_err("Analog packets covering multiple channels not supported yet");
	316	return SR_ERR;
	317	}
	318	channel = analog->meaning->channels->data;
	319
26918dce ML	320	basename = g_strdup_printf("analog-1-%u",
26918dce ML	321	channel->index - outc->min_analog_index + 1);
7163dcbe ML	322	baselen = strlen(basename);
	323	next_chunk_num = 1;
	324	num_files = zip_get_num_entries(archive, 0);
	325	for (i = 0; i < num_files; i++) {
	326	entry_name = zip_get_name(archive, i, 0);
	327	if (!entry_name \|\| strncmp(entry_name, basename, baselen) != 0) {
	328	continue;
	329	} else if (entry_name[baselen] == '-') {
	330	chunk_num = g_ascii_strtoull(entry_name + baselen + 1, NULL, 10);
	331	if (chunk_num < G_MAXINT && chunk_num >= next_chunk_num)
	332	next_chunk_num = chunk_num + 1;
	333	}
	334	}
	335
	336	chunksize = sizeof(float) * analog->num_samples;
	337	if (!(chunkbuf = g_try_malloc(chunksize)))
	338	return SR_ERR;
	339	if (sr_analog_to_float(analog, chunkbuf) != SR_OK)
	340	return SR_ERR;
	341
	342	analogsrc = zip_source_buffer(archive, chunkbuf, chunksize, FALSE);
	343	chunkname = g_strdup_printf("%s-%u", basename, next_chunk_num);
	344	i = zip_add(archive, chunkname, analogsrc);
	345	g_free(chunkname);
	346	if (i < 0) {
	347	sr_err("Failed to add chunk '%s': %s", chunkname, zip_strerror(archive));
	348	zip_source_free(analogsrc);
	349	zip_discard(archive);
	350	return SR_ERR;
	351	}
	352	if (zip_close(archive) < 0) {
	353	sr_err("Error saving session file: %s", zip_strerror(archive));
	354	zip_discard(archive);
	355	return SR_ERR;
	356	}
	357
	358	return SR_OK;
	359	}
	360
3250d8c7 BV	361	static int receive(const struct sr_output o, const struct sr_datafeed_packet packet,
	362	GString **out)
	363	{
	364	struct out_context *outc;
	365	const struct sr_datafeed_meta *meta;
	366	const struct sr_datafeed_logic *logic;
7163dcbe	367	const struct sr_datafeed_analog *analog;
3250d8c7 BV	368	const struct sr_config *src;
	369	GSList *l;
	370
	371	int ret;
	372
	373	*out = NULL;
	374	if (!o \|\| !o->sdi \|\| !(outc = o->priv))
	375	return SR_ERR_ARG;
	376
	377	switch (packet->type) {
	378	case SR_DF_META:
	379	meta = packet->payload;
	380	for (l = meta->config; l; l = l->next) {
	381	src = l->data;
	382	if (src->key != SR_CONF_SAMPLERATE)
	383	continue;
	384	outc->samplerate = g_variant_get_uint64(src->data);
	385	}
	386	break;
	387	case SR_DF_LOGIC:
	388	if (!outc->zip_created) {
	389	if ((ret = zip_create(o)) != SR_OK)
	390	return ret;
	391	outc->zip_created = TRUE;
	392	}
	393	logic = packet->payload;
	394	ret = zip_append(o, logic->data, logic->unitsize, logic->length);
e57057ae UH	395	if (ret != SR_OK)
e57057ae UH	396	return ret;
3250d8c7	397	break;
7163dcbe ML	398	case SR_DF_ANALOG:
	399	if (!outc->zip_created) {
	400	if ((ret = zip_create(o)) != SR_OK)
	401	return ret;
	402	outc->zip_created = TRUE;
	403	}
	404	analog = packet->payload;
	405	ret = zip_append_analog(o, analog);
	406	if (ret != SR_OK)
	407	return ret;
	408	break;
3250d8c7 BV	409	}
	410
	411	return SR_OK;
	412	}
	413
3250d8c7	414	static struct sr_option options[] = {
3250d8c7 BV	415	ALL_ZERO
	416	};
	417
	418	static const struct sr_option *get_options(void)
	419	{
	420	if (!options[0].def)
	421	options[0].def = g_variant_ref_sink(g_variant_new_string(""));
	422
	423	return options;
	424	}
	425
da3d141f SB	426	static int cleanup(struct sr_output *o)
	427	{
	428	struct out_context *outc;
	429
	430	outc = o->priv;
	431	g_variant_unref(options[0].def);
	432	g_free(outc->filename);
	433	g_free(outc);
	434	o->priv = NULL;
	435
	436	return SR_OK;
	437	}
	438
3250d8c7 BV	439	SR_PRIV struct sr_output_module output_srzip = {
	440	.id = "srzip",
	441	.name = "srzip",
	442	.desc = "srzip session file",
8a174d23	443	.exts = (const char*[]){"sr", NULL},
3cd4b381	444	.flags = SR_OUTPUT_INTERNAL_IO_HANDLING,
3250d8c7 BV	445	.options = get_options,
	446	.init = init,
	447	.receive = receive,
	448	.cleanup = cleanup,
	449	};