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fully implement input_binary module

This commit is contained in:
Bert Vermeulen 2011-01-11 23:58:41 +01:00
parent 78ed642035
commit 13a1291350
2 changed files with 41 additions and 15 deletions
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49
input/input_binary.c
View File

@ -17,6 +17,7 @@
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
@ -24,52 +25,75 @@
#include <sys/time.h>
#include <sigrok.h>
#define CHUNKSIZE 4096
#define CHUNKSIZE 4096
#define DEFAULT_NUM_PROBES 8
static int format_match(const char *filename)
{
/* suppress compiler warning */
filename = NULL;
/* this module will handle anything you throw at it */
return TRUE;
}
static int in_loadfile(const char *filename)
static int init(struct input *in)
{
int num_probes;
if (in->param && in->param[0]) {
num_probes = strtoul(in->param, NULL, 10);
if (num_probes < 1)
return SIGROK_ERR;
} else
num_probes = DEFAULT_NUM_PROBES;
/* create a virtual device */
in->vdevice = device_new(NULL, 0, num_probes);
return SIGROK_OK;
}
static int loadfile(struct input *in, const char *filename)
{
struct datafeed_header header;
struct datafeed_packet packet;
struct device *device;
char buffer[CHUNKSIZE];
int fd, size, num_probes;
if ((fd = open(filename, O_RDONLY)) == -1)
return SIGROK_ERR;
/* TODO: Number of probes is hardcoded to 8. */
num_probes = 8;
device = device_new(NULL, 0, num_probes);
num_probes = g_slist_length(in->vdevice->probes);
/* send header */
header.feed_version = 1;
header.num_logic_probes = num_probes;
header.num_analog_probes = 0; /* FIXME */
header.num_analog_probes = 0;
header.protocol_id = PROTO_RAW;
header.samplerate = 0;
gettimeofday(&header.starttime, NULL);
packet.type = DF_HEADER;
packet.length = sizeof(struct datafeed_header);
packet.payload = &header;
session_bus(device, &packet);
session_bus(in->vdevice, &packet);
/* chop up the input file into chunks and feed it into the session bus */
packet.type = DF_LOGIC;
packet.unitsize = 1;
packet.unitsize = (num_probes + 7) / 8;
packet.payload = buffer;
while ((size = read(fd, buffer, CHUNKSIZE)) > 0) {
packet.length = size;
session_bus(device, &packet);
session_bus(in->vdevice, &packet);
}
close(fd);
/* end of stream */
packet.type = DF_END;
packet.length = 0;
session_bus(device, &packet);
session_bus(in->vdevice, &packet);
return SIGROK_OK;
}
@ -78,5 +102,6 @@ struct input_format input_binary = {
"binary",
"Raw binary",
format_match,
in_loadfile,
init,
loadfile,
};

7
sigrok.h
View File

@ -123,15 +123,16 @@ struct datafeed_header {
struct input {
struct input_format *format;
void *param;
void *internal;
char *param;
struct device *vdevice;
};
struct input_format {
char *extension;
char *description;
int (*format_match) (const char *filename);
int (*in_loadfile) (const char *filename);
int (*init) (struct input *in);
int (*loadfile) (struct input *in, const char *filename);
};