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output/null: Add a null module that discards all data. 

This is useful for testing purposes.
This commit is contained in:
Uwe Hermann 2018-04-19 20:10:50 +02:00
parent b20eb52055
commit 1af7497d67
3 changed files with 50 additions and 1 deletions
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3
Makefile.am
View File

@ -92,7 +92,8 @@ libsigrok_la_SOURCES += \
src/output/hex.c \
src/output/ols.c \
src/output/srzip.c \
src/output/vcd.c
src/output/vcd.c \
src/output/null.c
# Transform modules
libsigrok_la_SOURCES += \

46
src/output/null.c Normal file
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@ -0,0 +1,46 @@
/*
* This file is part of the libsigrok project.
*
* Copyright (C) 2018 Uwe Hermann <uwe@hermann-uwe.de>
*
* 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 2 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 <glib.h>
#include <libsigrok/libsigrok.h>
#include "libsigrok-internal.h"
#define LOG_PREFIX "output/null"
static int receive(const struct sr_output *o, const struct sr_datafeed_packet *packet,
GString **out)
{
(void)o;
(void)packet;
*out = NULL;
return SR_OK;
}
SR_PRIV struct sr_output_module output_null = {
.id = "null",
.name = "Null output",
.desc = "Null output (discards all data)",
.exts = NULL,
.flags = 0,
.options = NULL,
.receive = receive,
};

2
src/output/output.c
View File

@ -64,6 +64,7 @@ extern SR_PRIV struct sr_output_module output_csv;
extern SR_PRIV struct sr_output_module output_analog;
extern SR_PRIV struct sr_output_module output_srzip;
extern SR_PRIV struct sr_output_module output_wav;
extern SR_PRIV struct sr_output_module output_null;
/* @endcond */
static const struct sr_output_module *output_module_list[] = {
@ -78,6 +79,7 @@ static const struct sr_output_module *output_module_list[] = {
&output_analog,
&output_srzip,
&output_wav,
&output_null,
NULL,
};