gstreamer/tests/examples/app/appsrc_ex.c
2011-03-28 14:12:24 +02:00

86 lines
1.9 KiB
C

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#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;
int
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;
void *data;
buf = gst_buffer_new_and_alloc (100);
data = gst_buffer_map (buf, NULL, NULL, GST_MAP_WRITE);
memset (data, i, 100);
gst_buffer_unmap (buf, data, 100);
printf ("%d: pushing buffer for pointer %p, %p\n", i, data, 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))) {
GstBuffer *buf;
/* pull the next item, this can return NULL when there is no more data and
* EOS has been received */
buf = gst_app_sink_pull_buffer (GST_APP_SINK (app->sink));
printf ("retrieved buffer %p\n", buf);
if (buf)
gst_buffer_unref (buf);
}
gst_element_set_state (app->pipe, GST_STATE_NULL);
return 0;
}