[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;
};

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);

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