opensles: Add initial draft implementation of OpenSL ES plugin.

Initial draft implementation for a OpenSL ES based plugin for Android
that provides audio src and sink.

1 files changed, 176 insertions, 0 deletions

diff --git a/sys/opensles/openslessink.c b/sys/opensles/openslessink.c
new file mode 100644
index 000000000..e63007748
--- /dev/null
+++ b/sys/opensles/openslessink.c
@@ -0,0 +1,176 @@
+/*
+ * GStreamer
+ * Copyright (C) 2012 Fluendo S.A. <support@fluendo.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Alternatively, the contents of this file may be used under the
+ * GNU Lesser General Public License Version 2.1 (the "LGPL"), in
+ * which case the following provisions apply instead of the ones
+ * mentioned above:
+ *
+ * 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.
+ *
+ * The development of this code was made possible due to the involvement of
+ * Pioneers of the Inevitable, the creators of the Songbird Music player
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include <config.h>
+#endif
+
+#include "openslessink.h"
+
+GST_DEBUG_CATEGORY_STATIC (opensles_sink_debug);
+#define GST_CAT_DEFAULT opensles_sink_debug
+
+enum
+{
+  PROP_0,
+  PROP_VOLUME,
+  PROP_LAST
+};
+
+#define DEFAULT_VOLUME 1.0
+
+#define RATES "8000, 11025, 12000, 16000, 22050, 24000, 32000, 44100, 48000, 64000, 88200, 96000, 192000"
+
+static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
+    GST_PAD_SINK,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS ("audio/x-raw-int, "
+        "endianness = (int) {" G_STRINGIFY (G_BYTE_ORDER) " }, "
+        "signed = (boolean) { TRUE }, "
+        "width = (int) 16, "
+        "depth = (int) 16, "
+        "rate = (int) { " RATES "}, "
+        "channels = (int) [1, 2];"
+        "audio/x-raw-int, "
+        "endianness = (int) {" G_STRINGIFY (G_BYTE_ORDER) " }, "
+        "signed = (boolean) { TRUE }, "
+        "width = (int) 8, "
+        "depth = (int) 8, "
+        "rate = (int) { " RATES "}, " "channels = (int) [1, 2]")
+    );
+
+static void
+_do_init (GType type)
+{
+  GST_DEBUG_CATEGORY_INIT (opensles_sink_debug, "opensles_sink", 0,
+      "OpenSL ES Sink");
+}
+
+GST_BOILERPLATE_FULL (GstOpenSLESSink, gst_opensles_sink, GstBaseAudioSink,
+    GST_TYPE_BASE_AUDIO_SINK, _do_init);
+
+static void
+gst_opensles_sink_base_init (gpointer g_class)
+{
+  GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
+
+  gst_element_class_add_static_pad_template (element_class, &sink_factory);
+
+  gst_element_class_set_details_simple (element_class, "OpenSL ES Sink",
+      "Sink/Audio",
+      "Output sound using the OpenSL ES APIs",
+      "Josep Torra <support@fluendo.com>");
+}
+
+static GstRingBuffer *
+gst_opensles_sink_create_ringbuffer (GstBaseAudioSink * base)
+{
+  GstRingBuffer *rb;
+
+  rb = gst_opensles_ringbuffer_new (RB_MODE_SINK_PCM);
+
+  return rb;
+}
+
+static void
+gst_opensles_sink_set_property (GObject * object, guint prop_id,
+    const GValue * value, GParamSpec * pspec)
+{
+  GstOpenSLESSink *sink = GST_OPENSLES_SINK (object);
+
+  switch (prop_id) {
+    case PROP_VOLUME:
+      sink->volume = g_value_get_double (value);
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
+
+static void
+gst_opensles_sink_get_property (GObject * object, guint prop_id,
+    GValue * value, GParamSpec * pspec)
+{
+  GstOpenSLESSink *sink = GST_OPENSLES_SINK (object);
+  switch (prop_id) {
+    case PROP_VOLUME:
+      g_value_set_double (value, sink->volume);
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
+
+static void
+gst_opensles_sink_class_init (GstOpenSLESSinkClass * klass)
+{
+  GObjectClass *gobject_class;
+  GstBaseAudioSinkClass *gstbaseaudiosink_class;
+
+  gobject_class = (GObjectClass *) klass;
+  gstbaseaudiosink_class = (GstBaseAudioSinkClass *) klass;
+
+  parent_class = g_type_class_peek_parent (klass);
+
+  gobject_class->set_property = gst_opensles_sink_set_property;
+  gobject_class->get_property = gst_opensles_sink_get_property;
+
+  g_object_class_install_property (gobject_class, PROP_VOLUME,
+      g_param_spec_double ("volume", "Volume", "Volume of this stream",
+          0, 1.0, 1.0, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+  gstbaseaudiosink_class->create_ringbuffer =
+      GST_DEBUG_FUNCPTR (gst_opensles_sink_create_ringbuffer);
+}
+
+static void
+gst_opensles_sink_init (GstOpenSLESSink * sink, GstOpenSLESSinkClass * gclass)
+{
+  sink->volume = DEFAULT_VOLUME;
+}