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Example of how an app could read data from a pipeline, this one wont run before queue is changed.

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Original commit message from CVS:
Example of how an app could read data from a pipeline, this one wont run
before queue is changed.
This commit is contained in:
Wim Taymans 2003-02-12 23:18:54 +00:00
parent a3abc06133
commit c17b392f20
6 changed files with 164 additions and 0 deletions
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1
examples/appreader/.gitignore vendored Normal file
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appreader

5
examples/appreader/Makefile.am Normal file
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noinst_PROGRAMS = appreader
appreader_LDADD = $(GST_LIBS)
appreader_CFLAGS = $(GST_CFLAGS)

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examples/appreader/appreader.c Normal file
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/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* 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
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include <gst/gst.h>
static void
fill_queue (GstElement *queue, gint level, GstBin *pipeline)
{
/* this needs to iterate till something is pushed
* in the queue */
gst_bin_iterate (pipeline);
}
gint
main (gint argc, gchar *argv[])
{
GstElement *queue, *src, *pipeline;
GstBuffer *buffer;
gboolean done = FALSE;
GstPad *pad;
gst_init (&argc, &argv);
queue = gst_element_factory_make ("queue", "queue");
g_object_set (G_OBJECT (queue), "signal_marks", TRUE, NULL);
src = gst_element_factory_make ("filesrc", "src");
g_object_set (G_OBJECT (src), "location", "appreader.c", NULL);
pipeline = gst_pipeline_new ("pipeline");
gst_bin_add_many (GST_BIN (pipeline), src, queue, NULL);
gst_element_link_many (src, queue, NULL);
pad = gst_element_get_pad (queue, "src");
g_signal_connect (G_OBJECT (queue), "low_watermark", G_CALLBACK (fill_queue), pipeline);
gst_element_set_state (pipeline, GST_STATE_PLAYING);
do {
/* get buffer into the app */
buffer = GST_RPAD_GETFUNC (pad) (pad);
/* just exit on any event */
if (GST_IS_EVENT (buffer)) {
done = TRUE;
}
else {
gst_util_dump_mem (GST_BUFFER_DATA (buffer), GST_BUFFER_SIZE (buffer));
}
gst_data_unref (GST_DATA (buffer));
} while (!done);
gst_element_set_state (pipeline, GST_STATE_NULL);
gst_object_unref (GST_OBJECT (pipeline));
return 0;
}

1
tests/old/examples/appreader/.gitignore vendored Normal file
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appreader

5
tests/old/examples/appreader/Makefile.am Normal file
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noinst_PROGRAMS = appreader
appreader_LDADD = $(GST_LIBS)
appreader_CFLAGS = $(GST_CFLAGS)

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tests/old/examples/appreader/appreader.c Normal file
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/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* 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
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include <gst/gst.h>
static void
fill_queue (GstElement *queue, gint level, GstBin *pipeline)
{
/* this needs to iterate till something is pushed
* in the queue */
gst_bin_iterate (pipeline);
}
gint
main (gint argc, gchar *argv[])
{
GstElement *queue, *src, *pipeline;
GstBuffer *buffer;
gboolean done = FALSE;
GstPad *pad;
gst_init (&argc, &argv);
queue = gst_element_factory_make ("queue", "queue");
g_object_set (G_OBJECT (queue), "signal_marks", TRUE, NULL);
src = gst_element_factory_make ("filesrc", "src");
g_object_set (G_OBJECT (src), "location", "appreader.c", NULL);
pipeline = gst_pipeline_new ("pipeline");
gst_bin_add_many (GST_BIN (pipeline), src, queue, NULL);
gst_element_link_many (src, queue, NULL);
pad = gst_element_get_pad (queue, "src");
g_signal_connect (G_OBJECT (queue), "low_watermark", G_CALLBACK (fill_queue), pipeline);
gst_element_set_state (pipeline, GST_STATE_PLAYING);
do {
/* get buffer into the app */
buffer = GST_RPAD_GETFUNC (pad) (pad);
/* just exit on any event */
if (GST_IS_EVENT (buffer)) {
done = TRUE;
}
else {
gst_util_dump_mem (GST_BUFFER_DATA (buffer), GST_BUFFER_SIZE (buffer));
}
gst_data_unref (GST_DATA (buffer));
} while (!done);
gst_element_set_state (pipeline, GST_STATE_NULL);
gst_object_unref (GST_OBJECT (pipeline));
return 0;
}