* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
+#include <config.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/time.h>
-#include "libsigrok.h"
+#include <libsigrok/libsigrok.h>
#include "libsigrok-internal.h"
#define LOG_PREFIX "input/binary"
-#define MAX_CHUNK_SIZE 4096
-#define DEFAULT_NUM_CHANNELS 8
-#define DEFAULT_SAMPLERATE "0"
+#define CHUNK_SIZE (4 * 1024 * 1024)
+#define DEFAULT_NUM_CHANNELS 8
+#define DEFAULT_SAMPLERATE 0
struct context {
gboolean started;
uint64_t samplerate;
+ uint16_t unitsize;
};
static int init(struct sr_input *in, GHashTable *options)
{
- struct sr_channel *ch;
struct context *inc;
- uint64_t samplerate;
int num_channels, i;
- const char *s;
char name[16];
num_channels = g_variant_get_int32(g_hash_table_lookup(options, "numchannels"));
return SR_ERR_ARG;
}
- s = g_variant_get_string(g_hash_table_lookup(options, "samplerate"), NULL);
- if (sr_parse_sizestring(s, &samplerate) != SR_OK) {
- sr_err("Invalid samplerate '%s'.", s);
- return SR_ERR_ARG;
- }
-
- in->sdi = sr_dev_inst_new(0, SR_ST_ACTIVE, NULL, NULL, NULL);
+ in->sdi = g_malloc0(sizeof(struct sr_dev_inst));
in->priv = inc = g_malloc0(sizeof(struct context));
- inc->samplerate = samplerate;
+
+ inc->samplerate = g_variant_get_uint64(g_hash_table_lookup(options, "samplerate"));
for (i = 0; i < num_channels; i++) {
- snprintf(name, 16, "%d", i);
- ch = sr_channel_new(i, SR_CHANNEL_LOGIC, TRUE, name);
- in->sdi->channels = g_slist_append(in->sdi->channels, ch);
+ snprintf(name, sizeof(name), "%d", i);
+ sr_channel_new(in->sdi, i, SR_CHANNEL_LOGIC, TRUE, name);
}
+ inc->unitsize = (g_slist_length(in->sdi->channels) + 7) / 8;
+
return SR_OK;
}
-static int receive(const struct sr_input *in, GString *buf)
+static int process_buffer(struct sr_input *in)
{
struct sr_datafeed_packet packet;
- struct sr_datafeed_meta meta;
struct sr_datafeed_logic logic;
- struct sr_config *src;
struct context *inc;
gsize chunk_size, i;
- int chunk, num_channels;
+ int chunk;
inc = in->priv;
+ if (!inc->started) {
+ std_session_send_df_header(in->sdi);
- g_string_append_len(in->buf, buf->str, buf->len);
-
- num_channels = g_slist_length(in->sdi->channels);
-
- std_session_send_df_header(in->sdi, LOG_PREFIX);
- inc->started = TRUE;
+ if (inc->samplerate) {
+ (void)sr_session_send_meta(in->sdi, SR_CONF_SAMPLERATE,
+ g_variant_new_uint64(inc->samplerate));
+ }
- packet.type = SR_DF_META;
- packet.payload = &meta;
- src = sr_config_new(SR_CONF_SAMPLERATE, g_variant_new_uint64(inc->samplerate));
- meta.config = g_slist_append(NULL, src);
- sr_session_send(in->sdi, &packet);
- sr_config_free(src);
+ inc->started = TRUE;
+ }
packet.type = SR_DF_LOGIC;
packet.payload = &logic;
- logic.unitsize = (num_channels + 7) / 8;
- logic.data = in->buf->str;
+ logic.unitsize = inc->unitsize;
/* Cut off at multiple of unitsize. */
chunk_size = in->buf->len / logic.unitsize * logic.unitsize;
- chunk = 0;
for (i = 0; i < chunk_size; i += chunk) {
- chunk = MAX(MAX_CHUNK_SIZE, chunk_size - i);
+ logic.data = in->buf->str + i;
+ chunk = MIN(CHUNK_SIZE, chunk_size - i);
+ chunk /= logic.unitsize;
+ chunk *= logic.unitsize;
logic.length = chunk;
sr_session_send(in->sdi, &packet);
}
-
- if (in->buf->len > chunk_size)
- g_string_erase(in->buf, 0, in->buf->len - chunk_size);
+ g_string_erase(in->buf, 0, chunk_size);
return SR_OK;
}
-static int cleanup(struct sr_input *in)
+static int receive(struct sr_input *in, GString *buf)
+{
+ int ret;
+
+ g_string_append_len(in->buf, buf->str, buf->len);
+
+ if (!in->sdi_ready) {
+ /* sdi is ready, notify frontend. */
+ in->sdi_ready = TRUE;
+ return SR_OK;
+ }
+
+ ret = process_buffer(in);
+
+ return ret;
+}
+
+static int end(struct sr_input *in)
{
- struct sr_datafeed_packet packet;
struct context *inc;
+ int ret;
+
+ if (in->sdi_ready)
+ ret = process_buffer(in);
+ else
+ ret = SR_OK;
inc = in->priv;
+ if (inc->started)
+ std_session_send_df_end(in->sdi);
- if (inc->started) {
- packet.type = SR_DF_END;
- sr_session_send(in->sdi, &packet);
- }
- g_free(in->priv);
- in->priv = NULL;
+ return ret;
+}
+
+static int reset(struct sr_input *in)
+{
+ struct context *inc = in->priv;
+
+ inc->started = FALSE;
+ g_string_truncate(in->buf, 0);
return SR_OK;
}
static struct sr_option options[] = {
- { "numchannels", "Number of channels", "Number of channels", NULL, NULL },
- { "samplerate", "Sample rate", "Sample rate", NULL, NULL },
+ { "numchannels", "Number of logic channels", "The number of (logic) channels in the data", NULL, NULL },
+ { "samplerate", "Sample rate (Hz)", "The sample rate of the (logic) data in Hz", NULL, NULL },
ALL_ZERO
};
-static struct sr_option *get_options(void)
+static const struct sr_option *get_options(void)
{
if (!options[0].def) {
options[0].def = g_variant_ref_sink(g_variant_new_int32(DEFAULT_NUM_CHANNELS));
- options[1].def = g_variant_ref_sink(g_variant_new_string(DEFAULT_SAMPLERATE));
+ options[1].def = g_variant_ref_sink(g_variant_new_uint64(DEFAULT_SAMPLERATE));
}
return options;
SR_PRIV struct sr_input_module input_binary = {
.id = "binary",
.name = "Binary",
- .desc = "Raw binary",
+ .desc = "Raw binary logic data",
+ .exts = NULL,
.options = get_options,
.init = init,
.receive = receive,
- .cleanup = cleanup,
+ .end = end,
+ .reset = reset,
};
projects / libsigrok.git / blobdiff