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