blob: 8919280ef123bb263fa60fc3a5426ba407bcb514 [file] [log] [blame]
/* GStreamer
* appsrc_ex.c: example for using appsrc and appsink linked.
* Copyright (C) 2007 David Schleef <>
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* Library General Public License for more details.
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
#include "config.h"
#include <gst/gst.h>
#include <gst/app/gstappsrc.h>
#include <gst/app/gstappsink.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
typedef struct _App App;
struct _App
GstElement *pipe;
GstElement *src;
GstElement *id;
GstElement *sink;
App s_app;
main (int argc, char *argv[])
App *app = &s_app;
int i;
gst_init (&argc, &argv);
app->pipe = gst_pipeline_new (NULL);
g_assert (app->pipe);
app->src = gst_element_factory_make ("appsrc", NULL);
g_assert (app->src);
gst_bin_add (GST_BIN (app->pipe), app->src);
app->id = gst_element_factory_make ("identity", NULL);
g_assert (app->id);
gst_bin_add (GST_BIN (app->pipe), app->id);
app->sink = gst_element_factory_make ("appsink", NULL);
g_assert (app->sink);
gst_bin_add (GST_BIN (app->pipe), app->sink);
gst_element_link (app->src, app->id);
gst_element_link (app->id, app->sink);
gst_element_set_state (app->pipe, GST_STATE_PLAYING);
for (i = 0; i < 10; i++) {
GstBuffer *buf;
GstMapInfo map;
buf = gst_buffer_new_and_alloc (100);
gst_buffer_map (buf, &map, GST_MAP_WRITE);
memset (, i, 100);
gst_buffer_unmap (buf, &map);
printf ("%d: pushing buffer for pointer %p, %p\n", i,, buf);
gst_app_src_push_buffer (GST_APP_SRC (app->src), buf);
/* push EOS */
gst_app_src_end_of_stream (GST_APP_SRC (app->src));
/* _is_eos() does not block and returns TRUE if there is not currently an EOS
* to be retrieved */
while (!gst_app_sink_is_eos (GST_APP_SINK (app->sink))) {
GstSample *sample;
/* pull the next item, this can return NULL when there is no more data and
* EOS has been received */
sample = gst_app_sink_pull_sample (GST_APP_SINK (app->sink));
printf ("retrieved sample %p\n", sample);
if (sample)
gst_sample_unref (sample);
gst_element_set_state (app->pipe, GST_STATE_NULL);
return 0;