#!/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> #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; if (!g_thread_supported ()) g_thread_init(NULL); 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); 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); 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); 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); } break; case GST_MESSAGE_WARNING: { GError *error = NULL; gchar *debug; gst_message_parse_warning (message, &error, &debug); gst_replace_handle_warning (replace, error, debug); } break; case GST_MESSAGE_INFO: { GError *error = NULL; gchar *debug; gst_message_parse_info (message, &error, &debug); gst_replace_handle_info (replace, error, debug); } 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 -Wall $(pkg-config --cflags gstreamer-0.10) -c -o $gstreplace.o $gstreplace.c gcc -o $gstreplace $gstreplace.o $(pkg-config --libs gstreamer-0.10)