#!/bin/sh
prefix=gst
templatedir=element-templates
while [ "$1" ] ; do
case $1 in
--help)
cat <<-EOF
Usage: element-maker [OPTIONS] _NAME BASE_CLASS
Create a GStreamer application from a template.
Options:
--help Print this information
--prefix PREFIX Use PREFIX instead of "gst"
Example: 'gst-app-maker my_app' will create the file gstmyapp.c.
EOF
exit 0
;;
--prefix)
shift
prefix=$1
;;
-*)
echo Unknown option: $1
exit 1
;;
*)
if [ "$name" = "" ]; then
name=$1
else
echo Ignored: $1
fi
esac
shift
done
if [ "$name" = "" ] ; then
echo "Usage: element-maker [OPTIONS] ELEMENT_NAME BASE_CLASS"
exit 1
fi
PREFIX=$(echo $prefix | sed -e 's/\(.*\)/\U\1/')
NAME=$(echo $name | sed -e 's/\(.*\)/\U\1/')
Prefix=$(echo $prefix | sed -e 's/_\(.\)/\U\1/g' -e 's/^\(.\)/\U\1/')
Name=$(echo $name | sed -e 's/_\(.\)/\U\1/g' -e 's/^\(.\)/\U\1/')
GST_IS_REPLACE=${PREFIX}_IS_${NAME}
GST_REPLACE=${PREFIX}_${NAME}
GST_TYPE_REPLACE=${PREFIX}_TYPE_${NAME}
GstReplace=${Prefix}${Name}
gst_replace=${prefix}_${name}
gstreplace=${prefix}$(echo $name | sed -e 's/_//g')
replace=$(echo $name | sed -e 's/_//g')
if [ "$REAL_NAME" = "" ] ; then
REAL_NAME=FIXME
fi
if [ "$EMAIL_ADDRESS" = "" ] ; then
EMAIL_ADDRESS=fixme@example.com
fi
generate ()
{
cat <<-EOF
/* GstReplace
* Copyright (C) $(date +%Y) $REAL_NAME <$EMAIL_ADDRESS>
* Copyright (C) 2010 Entropy Wave Inc
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/gst.h>
#include <stdlib.h>
#define GETTEXT_PACKAGE "replace"
typedef struct _GstReplace GstReplace;
struct _GstReplace {
GstElement *pipeline;
GstBus *bus;
GMainLoop *main_loop;
GstElement *source_element;
GstElement *sink_element;
gboolean paused_for_buffering;
guint timer_id;
};
GstReplace * gst_replace_new (void);
void gst_replace_free (GstReplace *replace);
void gst_replace_create_pipeline (GstReplace *replace);
void gst_replace_create_pipeline_playbin (GstReplace *replace, const char *uri);
void gst_replace_start (GstReplace *replace);
void gst_replace_stop (GstReplace *replace);
static gboolean gst_replace_handle_message (GstBus *bus, GstMessage *message,
gpointer data);
static gboolean onesecond_timer (gpointer priv);
gboolean verbose;
static GOptionEntry entries[] =
{
{ "verbose", 'v', 0, G_OPTION_ARG_NONE, &verbose, "Be verbose", NULL },
{ NULL }
};
int
main (int argc, char *argv[])
{
GError *error = NULL;
GOptionContext *context;
GstReplace *replace;
GMainLoop *main_loop;
context = g_option_context_new ("- FIXME");
g_option_context_add_main_entries (context, entries, GETTEXT_PACKAGE);
g_option_context_add_group (context, gst_init_get_option_group ());
if (!g_option_context_parse (context, &argc, &argv, &error)) {
g_print ("option parsing failed: %s\n", error->message);
g_clear_error (&error);
g_option_context_free (context);
exit (1);
}
g_option_context_free (context);
replace = gst_replace_new ();
if (argc > 1) {
gchar *uri;
if (gst_uri_is_valid (argv[1])) {
uri = g_strdup (argv[1]);
} else {
uri = g_filename_to_uri (argv[1], NULL, NULL);
}
gst_replace_create_pipeline_playbin (replace, uri);
g_free (uri);
} else {
gst_replace_create_pipeline (replace);
}
gst_replace_start (replace);
main_loop = g_main_loop_new (NULL, TRUE);
replace->main_loop = main_loop;
g_main_loop_run (main_loop);
exit (0);
}
GstReplace *
gst_replace_new (void)
{
GstReplace *replace;
replace = g_new0 (GstReplace, 1);
return replace;
}
void
gst_replace_free (GstReplace *replace)
{
if (replace->source_element) {
gst_object_unref (replace->source_element);
replace->source_element = NULL;
}
if (replace->sink_element) {
gst_object_unref (replace->sink_element);
replace->sink_element = NULL;
}
if (replace->pipeline) {
gst_element_set_state (replace->pipeline, GST_STATE_NULL);
gst_object_unref (replace->pipeline);
replace->pipeline = NULL;
}
g_free (replace);
}
void
gst_replace_create_pipeline_playbin (GstReplace *replace, const char *uri)
{
GstElement *pipeline;
GError *error = NULL;
pipeline = gst_pipeline_new (NULL);
gst_bin_add (GST_BIN(pipeline),
gst_element_factory_make ("playbin", "source"));
if (error) {
g_print("pipeline parsing error: %s\n", error->message);
g_clear_error (&error);
gst_object_unref (pipeline);
return;
}
replace->pipeline = pipeline;
gst_pipeline_set_auto_flush_bus (GST_PIPELINE(pipeline), FALSE);
replace->bus = gst_pipeline_get_bus (GST_PIPELINE(pipeline));
gst_bus_add_watch (replace->bus, gst_replace_handle_message, replace);
replace->source_element = gst_bin_get_by_name (GST_BIN(pipeline), "source");
g_print("source_element is %p\n", replace->source_element);
g_print("setting uri to %s\n", uri);
g_object_set (replace->source_element, "uri", uri, NULL);
}
void
gst_replace_create_pipeline (GstReplace *replace)
{
GString *pipe_desc;
GstElement *pipeline;
GError *error = NULL;
pipe_desc = g_string_new ("");
g_string_append (pipe_desc, "videotestsrc name=source num-buffers=100 ! ");
g_string_append (pipe_desc, "timeoverlay ! ");
g_string_append (pipe_desc, "xvimagesink name=sink ");
g_string_append (pipe_desc, "audiotestsrc samplesperbuffer=1600 num-buffers=100 ! ");
g_string_append (pipe_desc, "alsasink ");
if (verbose) g_print ("pipeline: %s\n", pipe_desc->str);
pipeline = (GstElement *) gst_parse_launch (pipe_desc->str, &error);
g_string_free (pipe_desc, FALSE);
if (error) {
g_print("pipeline parsing error: %s\n", error->message);
g_clear_error (&error);
gst_object_unref (pipeline);
return;
}
replace->pipeline = pipeline;
gst_pipeline_set_auto_flush_bus (GST_PIPELINE(pipeline), FALSE);
replace->bus = gst_pipeline_get_bus (GST_PIPELINE(pipeline));
gst_bus_add_watch (replace->bus, gst_replace_handle_message, replace);
replace->source_element = gst_bin_get_by_name (GST_BIN(pipeline), "source");
replace->sink_element = gst_bin_get_by_name (GST_BIN(pipeline), "sink");
}
void
gst_replace_start (GstReplace *replace)
{
gst_element_set_state (replace->pipeline, GST_STATE_READY);
replace->timer_id = g_timeout_add (1000, onesecond_timer, replace);
}
void
gst_replace_stop (GstReplace *replace)
{
gst_element_set_state (replace->pipeline, GST_STATE_NULL);
g_source_remove (replace->timer_id);
}
static void
gst_replace_handle_eos (GstReplace *replace)
{
gst_replace_stop (replace);
}
static void
gst_replace_handle_error (GstReplace *replace, GError *error,
const char *debug)
{
g_print ("error: %s\n", error->message);
gst_replace_stop (replace);
}
static void
gst_replace_handle_warning (GstReplace *replace, GError *error,
const char *debug)
{
g_print ("warning: %s\n", error->message);
}
static void
gst_replace_handle_info (GstReplace *replace, GError *error,
const char *debug)
{
g_print ("info: %s\n", error->message);
}
static void
gst_replace_handle_null_to_ready (GstReplace *replace)
{
gst_element_set_state (replace->pipeline, GST_STATE_PAUSED);
}
static void
gst_replace_handle_ready_to_paused (GstReplace *replace)
{
if (!replace->paused_for_buffering) {
gst_element_set_state (replace->pipeline, GST_STATE_PLAYING);
}
}
static void
gst_replace_handle_paused_to_playing (GstReplace *replace)
{
}
static void
gst_replace_handle_playing_to_paused (GstReplace *replace)
{
}
static void
gst_replace_handle_paused_to_ready (GstReplace *replace)
{
}
static void
gst_replace_handle_ready_to_null (GstReplace *replace)
{
g_main_loop_quit (replace->main_loop);
}
static gboolean
gst_replace_handle_message (GstBus *bus, GstMessage *message,
gpointer data)
{
GstReplace *replace = (GstReplace *) data;
switch (GST_MESSAGE_TYPE(message)) {
case GST_MESSAGE_EOS:
gst_replace_handle_eos (replace);
break;
case GST_MESSAGE_ERROR:
{
GError *error = NULL;
gchar *debug;
gst_message_parse_error (message, &error, &debug);
gst_replace_handle_error (replace, error, debug);
g_clear_error (&error);
}
break;
case GST_MESSAGE_WARNING:
{
GError *error = NULL;
gchar *debug;
gst_message_parse_warning (message, &error, &debug);
gst_replace_handle_warning (replace, error, debug);
g_clear_error (&error);
}
break;
case GST_MESSAGE_INFO:
{
GError *error = NULL;
gchar *debug;
gst_message_parse_info (message, &error, &debug);
gst_replace_handle_info (replace, error, debug);
g_clear_error (&error);
}
break;
case GST_MESSAGE_TAG:
{
GstTagList *tag_list;
gst_message_parse_tag (message, &tag_list);
if (verbose) g_print("tag\n");
}
break;
case GST_MESSAGE_STATE_CHANGED:
{
GstState oldstate, newstate, pending;
gst_message_parse_state_changed (message, &oldstate, &newstate,
&pending);
if (GST_ELEMENT(message->src) == replace->pipeline) {
if (verbose) g_print("state change from %s to %s\n",
gst_element_state_get_name (oldstate),
gst_element_state_get_name (newstate));
switch (GST_STATE_TRANSITION(oldstate, newstate)) {
case GST_STATE_CHANGE_NULL_TO_READY:
gst_replace_handle_null_to_ready (replace);
break;
case GST_STATE_CHANGE_READY_TO_PAUSED:
gst_replace_handle_ready_to_paused (replace);
break;
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
gst_replace_handle_paused_to_playing (replace);
break;
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
gst_replace_handle_playing_to_paused (replace);
break;
case GST_STATE_CHANGE_PAUSED_TO_READY:
gst_replace_handle_paused_to_ready (replace);
break;
case GST_STATE_CHANGE_READY_TO_NULL:
gst_replace_handle_ready_to_null (replace);
break;
default:
if (verbose) g_print("unknown state change from %s to %s\n",
gst_element_state_get_name (oldstate),
gst_element_state_get_name (newstate));
}
}
}
break;
case GST_MESSAGE_BUFFERING:
{
int percent;
gst_message_parse_buffering (message, &percent);
//g_print("buffering %d\n", percent);
if (!replace->paused_for_buffering && percent < 100) {
g_print ("pausing for buffing\n");
replace->paused_for_buffering = TRUE;
gst_element_set_state (replace->pipeline, GST_STATE_PAUSED);
} else if (replace->paused_for_buffering && percent == 100) {
g_print ("unpausing for buffing\n");
replace->paused_for_buffering = FALSE;
gst_element_set_state (replace->pipeline, GST_STATE_PLAYING);
}
}
break;
case GST_MESSAGE_STATE_DIRTY:
case GST_MESSAGE_CLOCK_PROVIDE:
case GST_MESSAGE_CLOCK_LOST:
case GST_MESSAGE_NEW_CLOCK:
case GST_MESSAGE_STRUCTURE_CHANGE:
case GST_MESSAGE_STREAM_STATUS:
break;
case GST_MESSAGE_STEP_DONE:
case GST_MESSAGE_APPLICATION:
case GST_MESSAGE_ELEMENT:
case GST_MESSAGE_SEGMENT_START:
case GST_MESSAGE_SEGMENT_DONE:
case GST_MESSAGE_DURATION:
case GST_MESSAGE_LATENCY:
case GST_MESSAGE_ASYNC_START:
case GST_MESSAGE_ASYNC_DONE:
case GST_MESSAGE_REQUEST_STATE:
case GST_MESSAGE_STEP_START:
case GST_MESSAGE_QOS:
default:
if (verbose) {
g_print ("message: %s\n", GST_MESSAGE_TYPE_NAME (message));
}
break;
}
return TRUE;
}
static gboolean
onesecond_timer (gpointer priv)
{
//GstReplace *replace = (GstReplace *)priv;
g_print(".\n");
return TRUE;
}
/* helper functions */
#if 0
gboolean
have_element (const gchar *element_name)
{
GstPluginFeature *feature;
feature = gst_default_registry_find_feature (element_name,
GST_TYPE_ELEMENT_FACTORY);
if (feature) {
g_object_unref (feature);
return TRUE;
}
return FALSE;
}
#endif
EOF
}
generate | sed \
-e "s/GST_BASE_REPLACE/$GST_BASE_REPLACE/g" \
-e "s/GST_TYPE_BASE_REPLACE/$GST_TYPE_BASE_REPLACE/g" \
-e "s/GstBaseReplace/$GstBaseReplace/g" \
-e "s/GST_IS_REPLACE/$GST_IS_REPLACE/g" \
-e "s/GST_REPLACE/$GST_REPLACE/g" \
-e "s/GST_TYPE_REPLACE/$GST_TYPE_REPLACE/g" \
-e "s/GstReplace/$GstReplace/g" \
-e "s/gst_replace/$gst_replace/g" \
-e "s/gstreplace/$gstreplace/g" \
-e "s/replace/$replace/g" >$gstreplace.c
gst-indent $gstreplace.c
gcc -O2 -Wall $(pkg-config --cflags gstreamer-1.0) -c -o $gstreplace.o $gstreplace.c
gcc -o $gstreplace $gstreplace.o $(pkg-config --libs gstreamer-1.0)