--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/gst_plugins_symbian/gst/amrmux/gstamrmux.c Mon May 03 12:47:24 2010 +0300
@@ -0,0 +1,321 @@
+/*
+ * Copyright © 2010 Nokia Corporation.
+ * This material, including documentation and any related
+ * computer progrs, is protected by copyright controlled by
+ * Nokia Corporation. All rights are reserved. Copying,
+ * including reproducing, storing, adapting or translating, any
+ * or all of this material requires the prior written consent of
+ * Nokia Corporation. This material also contains confidential
+ * information which may not be disclosed to others without the
+ * prior written consent of Nokia Corporation.
+ * ============================================================================
+ */
+
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+
+#include "gstamrmux.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+
+#ifdef __SYMBIAN32__
+#include <gst/gstinfo.h>
+#endif
+
+/* AMR nb header value */
+const char* amrnbmagicnumber = "#!AMR\n";
+
+static void gst_amrmux_base_init (gpointer g_class);
+static void gst_amrmux_class_init (GstAmrMuxClass * klass);
+static void gst_amrmux_init ( GstAmrMux * filter, GstAmrMuxClass *filter_klass);
+
+static GstFlowReturn gst_amrmux_chain (GstPad * pad, GstBuffer * buf);
+
+static void gst_amrmux_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec);
+
+static void gst_amrmux_set_property (GObject *object, guint prop_id,
+ const GValue *value, GParamSpec *pspec);
+
+static GstStateChangeReturn gst_amrmux_change_state (GstElement * element,
+ GstStateChange transition);
+
+static void gst_amrmux_dispose(GObject * object);
+
+static GstElementClass *parent_class= NULL;
+
+static const GstElementDetails gst_amrmux_details =
+GST_ELEMENT_DETAILS ("AMR MUX Details",
+ "Codec/Muxer/Audio",
+ "Adaptive Multi-Rate Narrow-Band Muxer",
+ "");
+
+static GstStaticPadTemplate sink_factory =
+GST_STATIC_PAD_TEMPLATE (
+ "sink",
+ GST_PAD_SINK,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS ("audio/amr")
+);
+
+static GstStaticPadTemplate source_factory =
+GST_STATIC_PAD_TEMPLATE (
+ "src",
+ GST_PAD_SRC,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS ("audio/amr")
+);
+
+enum {
+ ARG_0,
+ ARG_HEADER
+};
+
+
+GType
+gst_amrmux_get_type (void)
+{
+ static GType gst_amrmux_type = 0;
+
+ if (!gst_amrmux_type) {
+ static const GTypeInfo amrmux_info = {
+ sizeof (GstAmrMuxClass),
+ gst_amrmux_base_init,
+ NULL,
+ (GClassInitFunc) gst_amrmux_class_init,
+ NULL,
+ NULL,
+ sizeof (GstAmrMux),
+ 0,
+ (GInstanceInitFunc) gst_amrmux_init,
+ };
+
+ gst_amrmux_type =
+ g_type_register_static (GST_TYPE_ELEMENT, "GstAmrMux",
+ &amrmux_info, 0);
+ }
+ return gst_amrmux_type;
+}
+
+
+static void
+gst_amrmux_base_init (gpointer g_class)
+{
+ GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
+
+ gst_element_class_add_pad_template(element_class,
+ gst_static_pad_template_get(&sink_factory));
+
+ gst_element_class_add_pad_template(element_class,
+ gst_static_pad_template_get(&source_factory));
+
+ gst_element_class_set_details (element_class, &gst_amrmux_details);
+}
+
+static void
+gst_amrmux_class_init ( GstAmrMuxClass * klass )
+{
+ GObjectClass *object_class;
+ GstElementClass *gstelement_class;
+
+ gstelement_class = (GstElementClass *) klass;
+ object_class = (GObjectClass *) klass;
+
+
+ object_class->set_property = gst_amrmux_set_property;
+ object_class->get_property = gst_amrmux_get_property;
+
+ gstelement_class->change_state = gst_amrmux_change_state;
+
+ object_class->dispose = gst_amrmux_dispose;
+
+ parent_class = g_type_class_peek_parent(klass);
+
+ g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_HEADER,
+ g_param_spec_boolean ("header", "header",
+ "For writing AMR header", TRUE, G_PARAM_READWRITE));
+
+
+ }
+
+static void gst_amrmux_dispose(GObject * object)
+{
+ G_OBJECT_CLASS (parent_class)->dispose (object);
+}
+
+static void
+gst_amrmux_init( GstAmrMux * amrmux, GstAmrMuxClass *amrmux_klass)
+{
+ GstElementClass *klass = GST_ELEMENT_CLASS (amrmux_klass);
+
+ //By default we have to write header
+ amrmux->writeheader= TRUE;
+
+ //Add Sink pad to this element
+
+ amrmux->sinkpad = gst_pad_new_from_template (
+ gst_element_class_get_pad_template (klass, "sink"), "sink");
+
+ gst_element_add_pad (GST_ELEMENT (amrmux), amrmux->sinkpad);
+
+
+ //Add Src pad to this element
+ amrmux->srcpad = gst_pad_new_from_template (
+ gst_element_class_get_pad_template (klass, "src"), "src");
+
+ gst_element_add_pad (GST_ELEMENT (amrmux), amrmux->srcpad);
+
+ gst_pad_set_chain_function (amrmux->sinkpad, gst_amrmux_chain);
+
+}
+
+
+static void
+gst_amrmux_get_property (GObject * object,
+ guint prop_id, GValue * value, GParamSpec * pspec)
+{
+
+ GstAmrMux *amrmux = GST_AMRMUX( object );
+
+ switch (prop_id) {
+ case ARG_HEADER:
+ g_value_set_boolean (value, amrmux->writeheader);
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+
+static void
+gst_amrmux_set_property (GObject * object,
+ guint prop_id, const GValue * value, GParamSpec * pspec)
+{
+GstAmrMux *amrmux = GST_AMRMUX( object );
+
+ switch (prop_id) {
+ case ARG_HEADER:
+ amrmux->writeheader = g_value_get_boolean (value);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+
+
+static GstFlowReturn
+gst_amrmux_chain (GstPad * pad, GstBuffer * buf)
+{
+
+ gint8 *codecdata;
+ guint8* amrdata;
+ guint8* amrheaderstart;
+
+ int codecdatasize = GST_BUFFER_SIZE(buf);
+
+ int magicnumberlength = strlen( amrnbmagicnumber );
+
+ GstAmrMux *amrmux = GST_AMRMUX (GST_PAD_PARENT (pad));
+
+ if ( amrmux->writeheader )
+ {
+
+ buf = gst_buffer_make_writable( buf );
+
+ //Allocate a buffer which will hold codec data + magic number
+
+ amrdata = ( guint8* )g_malloc( GST_BUFFER_SIZE(buf) + magicnumberlength );
+
+ //To save the starting address of amr data
+
+ amrheaderstart = amrdata;
+
+ //Copy magic number to newly allocated buffer
+
+ memcpy( amrdata, amrnbmagicnumber, magicnumberlength);
+
+ codecdata = (gint8*)GST_BUFFER_DATA (buf);
+
+ //Move the pointer to the end of magic number
+
+ amrdata += magicnumberlength;
+
+ //Copy codec data to newly allocated buffer
+
+ memcpy( amrdata , codecdata, codecdatasize );
+
+ // free codec data from GstBuffer
+
+ g_free( buf->malloc_data );
+
+ //Copying the newly allocated buffer and size in GstBuffer
+
+ buf->data = amrheaderstart;
+
+ buf->malloc_data = amrheaderstart;
+
+ buf->size+= magicnumberlength;
+
+ //Do it only first time
+
+ amrmux->writeheader = FALSE;
+ }
+
+ return gst_pad_push( amrmux->srcpad , buf );
+
+}
+
+static GstStateChangeReturn
+gst_amrmux_change_state (GstElement * element, GstStateChange transition)
+{
+ GstStateChangeReturn ret;
+ GstAmrMux *amrmux = GST_AMRMUX (element);
+
+ ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
+
+ if (G_UNLIKELY (ret == GST_STATE_CHANGE_FAILURE))
+ return ret;
+
+ switch (transition) {
+ case GST_STATE_CHANGE_READY_TO_NULL:
+ {
+ amrmux->writeheader = TRUE;
+ break;
+ }
+
+ default:
+ break;
+ }
+
+ return ret;
+}
+
+static gboolean
+plugin_init (GstPlugin * plugin)
+{
+
+ return gst_element_register (plugin, "amrmux", GST_RANK_PRIMARY,
+ GST_TYPE_AMRMUX);
+}
+
+GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
+ GST_VERSION_MINOR,
+ "amrmux",
+ "Add header to amr-nb encoded stream",
+ plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)
+
+
+EXPORT_C GstPluginDesc* _GST_PLUGIN_DESC()
+{
+ return &gst_plugin_desc;
+}
+