* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
+#include <config.h>
#include <stdlib.h>
-#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <glib.h>
#include <glib/gstdio.h>
#include <zip.h>
-#include "libsigrok.h"
+#include <libsigrok/libsigrok.h>
#include "libsigrok-internal.h"
#define LOG_PREFIX "output/srzip"
+#define CHUNK_SIZE (4 * 1024 * 1024)
struct out_context {
gboolean zip_created;
uint64_t samplerate;
char *filename;
+ size_t first_analog_index;
+ size_t analog_ch_count;
+ gint *analog_index_map;
+ struct logic_buff {
+ size_t zip_unit_size;
+ size_t alloc_size;
+ uint8_t *samples;
+ size_t fill_size;
+ } logic_buff;
+ struct analog_buff {
+ size_t alloc_size;
+ float *samples;
+ size_t fill_size;
+ } *analog_buff;
};
static int init(struct sr_output *o, GHashTable *options)
{
struct out_context *outc;
- outc = g_malloc0(sizeof(struct out_context));
- o->priv = outc;
- outc->filename = g_strdup(g_variant_get_string(g_hash_table_lookup(options, "filename"), NULL));
- if (strlen(outc->filename) == 0)
+ (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(*outc));
+ 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 sr_channel *ch;
- FILE *meta;
struct zip *zipfile;
struct zip_source *versrc, *metasrc;
+ struct sr_channel *ch;
+ size_t ch_nr;
+ size_t alloc_size;
GVariant *gvar;
+ GKeyFile *meta;
GSList *l;
- int tmpfile, ret;
- char version[1], metafile[32], *s;
+ const char *devgroup;
+ char *s, *metabuf;
+ gsize metalen;
+ guint logic_channels, enabled_logic_channels;
+ guint enabled_analog_channels;
+ guint index;
outc = o->priv;
- if (outc->samplerate == 0) {
- if (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);
- }
+
+ 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. */
- unlink(outc->filename);
- if (!(zipfile = zip_open(outc->filename, ZIP_CREATE, &ret)))
+ g_unlink(outc->filename);
+ zipfile = zip_open(outc->filename, ZIP_CREATE, NULL);
+ if (!zipfile)
return SR_ERR;
/* "version" */
- version[0] = '2';
- if (!(versrc = zip_source_buffer(zipfile, version, 1, 0)))
- return SR_ERR;
- if (zip_add(zipfile, "version", versrc) == -1) {
- sr_info("Error saving version into zipfile: %s.",
+ 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" */
- strcpy(metafile, "sigrok-meta-XXXXXX");
- if ((tmpfile = g_mkstemp(metafile)) == -1)
- return SR_ERR;
- close(tmpfile);
- meta = g_fopen(metafile, "wb");
- fprintf(meta, "[global]\n");
- fprintf(meta, "sigrok version = %s\n", PACKAGE_VERSION);
- fprintf(meta, "[device 1]\ncapturefile = logic-1\n");
- fprintf(meta, "total probes = %d\n", g_slist_length(o->sdi->channels));
+ meta = g_key_file_new();
+
+ g_key_file_set_string(meta, "global", "sigrok version",
+ sr_package_version_string_get());
+
+ devgroup = "device 1";
+
+ logic_channels = 0;
+ enabled_logic_channels = 0;
+ enabled_analog_channels = 0;
+ for (l = o->sdi->channels; l; l = l->next) {
+ ch = l->data;
+
+ switch (ch->type) {
+ case SR_CHANNEL_LOGIC:
+ if (ch->enabled)
+ enabled_logic_channels++;
+ logic_channels++;
+ break;
+ case SR_CHANNEL_ANALOG:
+ if (ch->enabled)
+ enabled_analog_channels++;
+ break;
+ }
+ }
+
+ /* When reading the file, the first index of the analog channels
+ * can only be deduced through the "total probes" count, so the
+ * first analog index must follow the last logic one, enabled or not. */
+ if (enabled_logic_channels > 0)
+ outc->first_analog_index = logic_channels + 1;
+ else
+ outc->first_analog_index = 1;
+
+ /* Only set capturefile and probes if we will actually save logic data. */
+ if (enabled_logic_channels > 0) {
+ g_key_file_set_string(meta, devgroup, "capturefile", "logic-1");
+ g_key_file_set_integer(meta, devgroup, "total probes", logic_channels);
+ }
+
s = sr_samplerate_string(outc->samplerate);
- fprintf(meta, "samplerate = %s\n", s);
+ g_key_file_set_string(meta, devgroup, "samplerate", s);
g_free(s);
+ g_key_file_set_integer(meta, devgroup, "total analog", enabled_analog_channels);
+
+ outc->analog_ch_count = enabled_analog_channels;
+ alloc_size = sizeof(gint) * outc->analog_ch_count + 1;
+ outc->analog_index_map = g_malloc0(alloc_size);
+
+ index = 0;
for (l = o->sdi->channels; l; l = l->next) {
ch = l->data;
- if (ch->type != SR_CHANNEL_LOGIC)
- continue;
if (!ch->enabled)
continue;
- fprintf(meta, "probe%d = %s\n", ch->index + 1, ch->name);
+
+ s = NULL;
+ switch (ch->type) {
+ case SR_CHANNEL_LOGIC:
+ ch_nr = ch->index + 1;
+ s = g_strdup_printf("probe%zu", ch_nr);
+ break;
+ case SR_CHANNEL_ANALOG:
+ ch_nr = outc->first_analog_index + index;
+ outc->analog_index_map[index] = ch->index;
+ s = g_strdup_printf("analog%zu", ch_nr);
+ index++;
+ break;
+ }
+ if (s) {
+ g_key_file_set_string(meta, devgroup, s, ch->name);
+ g_free(s);
+ }
}
- fclose(meta);
- if (!(metasrc = zip_source_file(zipfile, metafile, 0, -1))) {
- unlink(metafile);
- return SR_ERR;
+ /*
+ * Allocate one samples buffer for all logic channels, and
+ * several samples buffers for the analog channels. Allocate
+ * buffers of CHUNK_SIZE size (in bytes), and determine the
+ * sample counts from the respective channel counts and data
+ * type widths.
+ *
+ * These buffers are intended to reduce the number of ZIP
+ * archive update calls, and decouple the srzip output module
+ * from implementation details in other acquisition device
+ * drivers and input modules.
+ *
+ * Avoid allocating zero bytes, to not depend on platform
+ * specific malloc(0) return behaviour. Avoid division by zero,
+ * holding a local buffer won't harm when no data is seen later
+ * during execution. This simplifies other locations.
+ */
+ alloc_size = CHUNK_SIZE;
+ outc->logic_buff.zip_unit_size = logic_channels;
+ outc->logic_buff.zip_unit_size += 8 - 1;
+ outc->logic_buff.zip_unit_size /= 8;
+ outc->logic_buff.samples = g_try_malloc0(alloc_size);
+ if (!outc->logic_buff.samples)
+ return SR_ERR_MALLOC;
+ if (outc->logic_buff.zip_unit_size)
+ alloc_size /= outc->logic_buff.zip_unit_size;
+ outc->logic_buff.alloc_size = alloc_size;
+ outc->logic_buff.fill_size = 0;
+
+ alloc_size = sizeof(outc->analog_buff[0]) * outc->analog_ch_count + 1;
+ outc->analog_buff = g_malloc0(alloc_size);
+ for (index = 0; index < outc->analog_ch_count; index++) {
+ alloc_size = CHUNK_SIZE;
+ outc->analog_buff[index].samples = g_try_malloc0(alloc_size);
+ if (!outc->analog_buff[index].samples)
+ return SR_ERR_MALLOC;
+ alloc_size /= sizeof(outc->analog_buff[0].samples[0]);
+ outc->analog_buff[index].alloc_size = alloc_size;
+ outc->analog_buff[index].fill_size = 0;
}
- if (zip_add(zipfile, "metadata", metasrc) == -1) {
- unlink(metafile);
+
+ 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 ((ret = zip_close(zipfile)) == -1) {
- sr_info("Error saving zipfile: %s.", zip_strerror(zipfile));
- unlink(metafile);
+ if (zip_close(zipfile) < 0) {
+ sr_err("Error saving zipfile: %s", zip_strerror(zipfile));
+ zip_discard(zipfile);
+ g_free(metabuf);
return SR_ERR;
}
-
- unlink(metafile);
+ g_free(metabuf);
return SR_OK;
}
-static int zip_append(const struct sr_output *o, unsigned char *buf,
- int unitsize, int length)
+/**
+ * Append a block of logic data to an srzip archive.
+ *
+ * @param[in] o Output module instance.
+ * @param[in] buf Logic data samples as byte sequence.
+ * @param[in] unitsize Logic data unit size (bytes per sample).
+ * @param[in] length Byte sequence length (in bytes, not samples).
+ *
+ * @returns SR_OK et al error codes.
+ */
+static int zip_append(const struct sr_output *o,
+ uint8_t *buf, size_t unitsize, size_t length)
{
struct out_context *outc;
struct zip *archive;
struct zip_source *logicsrc;
- zip_int64_t num_files;
- struct zip_file *zf;
+ int64_t i, num_files;
struct zip_stat zs;
struct zip_source *metasrc;
GKeyFile *kf;
GError *error;
- gsize len;
- int chunk_num, next_chunk_num, tmpfile, ret, i;
+ uint64_t chunk_num;
const char *entry_name;
- char *metafile, tmpname[32], chunkname[16];
+ char *metabuf;
+ gsize metalen;
+ char *chunkname;
+ unsigned int next_chunk_num;
+
+ if (!length)
+ return SR_OK;
outc = o->priv;
- if (!(archive = zip_open(outc->filename, 0, &ret)))
+ if (!(archive = zip_open(outc->filename, 0, NULL)))
return SR_ERR;
- if (zip_stat(archive, "metadata", 0, &zs) == -1)
+ if (zip_stat(archive, "metadata", 0, &zs) < 0) {
+ sr_err("Failed to open metadata: %s", zip_strerror(archive));
+ zip_discard(archive);
return SR_ERR;
-
- metafile = g_malloc(zs.size);
- zf = zip_fopen_index(archive, zs.index, 0);
- zip_fread(zf, metafile, zs.size);
- zip_fclose(zf);
-
+ }
+ 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;
- kf = g_key_file_new();
- if (!g_key_file_load_from_data(kf, metafile, zs.size, 0, &error)) {
- sr_err("Failed to parse metadata: %s.", error->message);
- return SR_ERR;
- }
- g_free(metafile);
- tmpname[0] = '\0';
+ 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 ? error->message : "?");
+ 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);
- metafile = g_key_file_to_data(kf, &len, &error);
- strcpy(tmpname, "sigrok-meta-XXXXXX");
- if ((tmpfile = g_mkstemp(tmpname)) == -1)
- return SR_ERR;
- if (write(tmpfile, metafile, len) < 0) {
- sr_dbg("Failed to create new metadata: %s", strerror(errno));
- g_free(metafile);
- unlink(tmpname);
- return SR_ERR;
- }
- close(tmpfile);
- if (!(metasrc = zip_source_file(archive, tmpname, 0, -1))) {
- sr_err("Failed to create zip source for metadata.");
- g_free(metafile);
- unlink(tmpname);
+ 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;
}
- if (zip_replace(archive, zs.index, metasrc) == -1) {
- sr_err("Failed to replace metadata file.");
- g_free(metafile);
- unlink(tmpname);
- return SR_ERR;
- }
- g_free(metafile);
}
g_key_file_free(kf);
num_files = zip_get_num_entries(archive, 0);
for (i = 0; i < num_files; i++) {
entry_name = zip_get_name(archive, i, 0);
- if (strncmp(entry_name, "logic-1", 7))
+ if (!entry_name || strncmp(entry_name, "logic-1", 7) != 0)
continue;
- if (strlen(entry_name) == 7) {
- /* 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") == -1) {
- sr_err("Failed to rename 'logic-1' to 'logic-1-1'.");
- unlink(tmpname);
+ 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 (strlen(entry_name) > 8 && entry_name[7] == '-') {
- chunk_num = strtoull(entry_name + 8, NULL, 10);
- if (chunk_num >= next_chunk_num)
+ } 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;
}
}
- snprintf(chunkname, 15, "logic-1-%d", next_chunk_num);
- if (!(logicsrc = zip_source_buffer(archive, buf, length, FALSE))) {
- unlink(tmpname);
+
+ if (length % unitsize != 0) {
+ sr_warn("Chunk size %zu not a multiple of the"
+ " unit size %zu.", 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_add(archive, chunkname, logicsrc) == -1) {
- unlink(tmpname);
+ if (zip_close(archive) < 0) {
+ sr_err("Error saving session file: %s", zip_strerror(archive));
+ zip_discard(archive);
+ g_free(metabuf);
return SR_ERR;
}
- if ((ret = zip_close(archive)) == -1) {
- sr_info("error saving session file: %s", zip_strerror(archive));
- unlink(tmpname);
+ g_free(metabuf);
+
+ return SR_OK;
+}
+
+/**
+ * Queue a block of logic data for srzip archive writes.
+ *
+ * @param[in] o Output module instance.
+ * @param[in] buf Logic data samples as byte sequence.
+ * @param[in] unitsize Logic data unit size (bytes per sample).
+ * @param[in] length Number of bytes of sample data.
+ * @param[in] flush Force ZIP archive update (queue by default).
+ *
+ * @returns SR_OK et al error codes.
+ */
+static int zip_append_queue(const struct sr_output *o,
+ const uint8_t *buf, size_t feed_unitsize, size_t length,
+ gboolean flush)
+{
+ static gboolean sizes_seen;
+
+ struct out_context *outc;
+ struct logic_buff *buff;
+ size_t sample_copy_size, sample_skip_size, sample_pad_size;
+ size_t send_count, remain, copy_count;
+ const uint8_t *rdptr;
+ uint8_t *wrptr;
+ int ret;
+
+ /*
+ * Check input parameters. Prepare to either grab data as is,
+ * or to adjust between differing input and output unit sizes.
+ * Diagnostics is rate limited for improved usability, assumes
+ * that session feeds are consistent across calls. Processing
+ * would cope with inconsistent calls though when required.
+ */
+ outc = o->priv;
+ buff = &outc->logic_buff;
+ if (length) {
+ if (!sizes_seen) {
+ sr_info("output unit size %zu, feed unit size %zu.",
+ buff->zip_unit_size, feed_unitsize);
+ }
+ if (feed_unitsize > buff->zip_unit_size) {
+ if (!sizes_seen)
+ sr_info("Large unit size, discarding excess logic data.");
+ sample_copy_size = buff->zip_unit_size;
+ sample_skip_size = feed_unitsize - buff->zip_unit_size;
+ sample_pad_size = 0;
+ } else if (feed_unitsize < buff->zip_unit_size) {
+ if (!sizes_seen)
+ sr_info("Small unit size, padding logic data.");
+ sample_copy_size = feed_unitsize;
+ sample_skip_size = 0;
+ sample_pad_size = buff->zip_unit_size - feed_unitsize;
+ } else {
+ if (!sizes_seen)
+ sr_dbg("Matching unit size, passing logic data as is.");
+ sample_copy_size = buff->zip_unit_size;
+ sample_skip_size = 0;
+ sample_pad_size = 0;
+ }
+ if (sample_copy_size + sample_skip_size != feed_unitsize) {
+ sr_err("Inconsistent input unit size. Implementation flaw?");
+ return SR_ERR_BUG;
+ }
+ if (sample_copy_size + sample_pad_size != buff->zip_unit_size) {
+ sr_err("Inconsistent output unit size. Implementation flaw?");
+ return SR_ERR_BUG;
+ }
+ sizes_seen = TRUE;
+ }
+
+ /*
+ * Queue most recently received samples to the local buffer.
+ * Flush to the ZIP archive when the buffer space is exhausted.
+ */
+ rdptr = buf;
+ send_count = feed_unitsize ? length / feed_unitsize : 0;
+ while (send_count) {
+ remain = buff->alloc_size - buff->fill_size;
+ wrptr = &buff->samples[buff->fill_size * buff->zip_unit_size];
+ if (remain) {
+ copy_count = MIN(send_count, remain);
+ if (sample_skip_size || sample_pad_size)
+ copy_count = 1;
+ send_count -= copy_count;
+ buff->fill_size += copy_count;
+ memcpy(wrptr, rdptr, copy_count * sample_copy_size);
+ if (sample_pad_size) {
+ wrptr += sample_copy_size;
+ memset(wrptr, 0, sample_pad_size);
+ }
+ rdptr += copy_count * sample_copy_size;
+ if (sample_skip_size)
+ rdptr += sample_skip_size;
+ remain -= copy_count;
+ }
+ if (send_count && !remain) {
+ ret = zip_append(o, buff->samples, buff->zip_unit_size,
+ buff->fill_size * buff->zip_unit_size);
+ if (ret != SR_OK)
+ return ret;
+ buff->fill_size = 0;
+ }
+ }
+
+ /* Flush to the ZIP archive if the caller wants us to. */
+ if (flush && buff->fill_size) {
+ ret = zip_append(o, buff->samples, buff->zip_unit_size,
+ buff->fill_size * buff->zip_unit_size);
+ if (ret != SR_OK)
+ return ret;
+ buff->fill_size = 0;
+ }
+
+ return SR_OK;
+}
+
+/**
+ * Append analog data of a channel to an srzip archive.
+ *
+ * @param[in] o Output module instance.
+ * @param[in] values Sample data as array of floating point values.
+ * @param[in] count Number of samples (float items, not bytes).
+ * @param[in] ch_nr 1-based channel number.
+ *
+ * @returns SR_OK et al error codes.
+ */
+static int zip_append_analog(const struct sr_output *o,
+ const float *values, size_t count, size_t ch_nr)
+{
+ struct out_context *outc;
+ struct zip *archive;
+ struct zip_source *analogsrc;
+ int64_t i, num_files;
+ size_t size;
+ struct zip_stat zs;
+ uint64_t chunk_num;
+ const char *entry_name;
+ char *basename;
+ gsize baselen;
+ 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;
+ }
+
+ basename = g_strdup_printf("analog-1-%zu", ch_nr);
+ 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;
+ }
+ }
+
+ size = sizeof(values[0]) * count;
+ analogsrc = zip_source_buffer(archive, values, size, FALSE);
+ chunkname = g_strdup_printf("%s-%u", basename, next_chunk_num);
+ i = zip_add(archive, chunkname, analogsrc);
+ if (i < 0) {
+ sr_err("Failed to add chunk '%s': %s", chunkname, zip_strerror(archive));
+ g_free(chunkname);
+ g_free(basename);
+ zip_source_free(analogsrc);
+ zip_discard(archive);
+ return SR_ERR;
+ }
+ g_free(chunkname);
+ if (zip_close(archive) < 0) {
+ sr_err("Error saving session file: %s", zip_strerror(archive));
+ g_free(basename);
+ zip_discard(archive);
+ return SR_ERR;
+ }
+
+ g_free(basename);
+
+ return SR_OK;
+}
+
+/**
+ * Queue analog data of a channel for srzip archive writes.
+ *
+ * @param[in] o Output module instance.
+ * @param[in] analog Sample data (session feed packet format).
+ * @param[in] flush Force ZIP archive update (queue by default).
+ *
+ * @returns SR_OK et al error codes.
+ */
+static int zip_append_analog_queue(const struct sr_output *o,
+ const struct sr_datafeed_analog *analog, gboolean flush)
+{
+ struct out_context *outc;
+ const struct sr_channel *ch;
+ size_t idx, nr;
+ struct analog_buff *buff;
+ float *values, *wrptr, *rdptr;
+ size_t send_size, remain, copy_size;
+ int ret;
+
+ outc = o->priv;
+
+ /* Is this the DF_END flush call without samples submission? */
+ if (!analog && flush) {
+ for (idx = 0; idx < outc->analog_ch_count; idx++) {
+ nr = outc->first_analog_index + idx;
+ buff = &outc->analog_buff[idx];
+ if (!buff->fill_size)
+ continue;
+ ret = zip_append_analog(o,
+ buff->samples, buff->fill_size, nr);
+ if (ret != SR_OK)
+ return ret;
+ buff->fill_size = 0;
+ }
+ return SR_OK;
+ }
+
+ /* Lookup index and number of the analog channel. */
+ /* 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;
}
- unlink(tmpname);
+ ch = g_slist_nth_data(analog->meaning->channels, 0);
+ for (idx = 0; idx < outc->analog_ch_count; idx++) {
+ if (outc->analog_index_map[idx] == ch->index)
+ break;
+ }
+ if (idx == outc->analog_ch_count)
+ return SR_ERR_ARG;
+ nr = outc->first_analog_index + idx;
+ buff = &outc->analog_buff[idx];
+
+ /* Convert the analog data to an array of float values. */
+ values = g_try_malloc0(analog->num_samples * sizeof(values[0]));
+ if (!values)
+ return SR_ERR_MALLOC;
+ ret = sr_analog_to_float(analog, values);
+ if (ret != SR_OK) {
+ g_free(values);
+ return ret;
+ }
+
+ /*
+ * Queue most recently received samples to the local buffer.
+ * Flush to the ZIP archive when the buffer space is exhausted.
+ */
+ rdptr = values;
+ send_size = analog->num_samples;
+ while (send_size) {
+ remain = buff->alloc_size - buff->fill_size;
+ if (remain) {
+ wrptr = &buff->samples[buff->fill_size];
+ copy_size = MIN(send_size, remain);
+ send_size -= copy_size;
+ buff->fill_size += copy_size;
+ memcpy(wrptr, rdptr, copy_size * sizeof(values[0]));
+ rdptr += copy_size;
+ remain -= copy_size;
+ }
+ if (send_size && !remain) {
+ ret = zip_append_analog(o,
+ buff->samples, buff->fill_size, nr);
+ if (ret != SR_OK) {
+ g_free(values);
+ return ret;
+ }
+ buff->fill_size = 0;
+ remain = buff->alloc_size - buff->fill_size;
+ }
+ }
+ g_free(values);
+
+ /* Flush to the ZIP archive if the caller wants us to. */
+ if (flush && buff->fill_size) {
+ ret = zip_append_analog(o, buff->samples, buff->fill_size, nr);
+ if (ret != SR_OK)
+ return ret;
+ buff->fill_size = 0;
+ }
return SR_OK;
}
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;
outc->zip_created = TRUE;
}
logic = packet->payload;
- ret = zip_append(o, logic->data, logic->unitsize, logic->length);
+ ret = zip_append_queue(o,
+ logic->data, logic->unitsize, logic->length,
+ FALSE);
+ 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_queue(o, analog, FALSE);
+ if (ret != SR_OK)
+ return ret;
+ break;
+ case SR_DF_END:
+ if (outc->zip_created) {
+ ret = zip_append_queue(o, NULL, 0, 0, TRUE);
+ if (ret != SR_OK)
+ return ret;
+ ret = zip_append_analog_queue(o, NULL, TRUE);
+ 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)
+{
+ return options;
+}
+
static int cleanup(struct sr_output *o)
{
struct out_context *outc;
+ size_t idx;
outc = o->priv;
+
+ g_free(outc->analog_index_map);
g_free(outc->filename);
+ g_free(outc->logic_buff.samples);
+ for (idx = 0; idx < outc->analog_ch_count; idx++)
+ g_free(outc->analog_buff[idx].samples);
+ g_free(outc->analog_buff);
+
g_free(outc);
o->priv = NULL;
return SR_OK;
}
-static struct sr_option options[] = {
- { "filename", "Filename", "File to write", NULL, NULL },
- 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;
-}
-
SR_PRIV struct sr_output_module output_srzip = {
.id = "srzip",
.name = "srzip",
- .desc = "srzip session file",
+ .desc = "srzip session file format data",
.exts = (const char*[]){"sr", NULL},
+ .flags = SR_OUTPUT_INTERNAL_IO_HANDLING,
.options = get_options,
.init = init,
.receive = receive,
.cleanup = cleanup,
};
-
projects / libsigrok.git / blobdiff