webkitgtk-2.16.5HEADwebkitgtk-2.16.5master

1 files changed, 70 insertions, 0 deletions

diff --git a/Source/WebCore/platform/audio/gstreamer/AudioSourceProviderGStreamer.h b/Source/WebCore/platform/audio/gstreamer/AudioSourceProviderGStreamer.h
new file mode 100644
index 000000000..5b6480f3a
--- /dev/null
+++ b/Source/WebCore/platform/audio/gstreamer/AudioSourceProviderGStreamer.h
@@ -0,0 +1,70 @@
+/*
+ *  Copyright (C) 2014 Igalia S.L
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Lesser 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
+ *  Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public
+ *  License along with this library; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#ifndef AudioSourceProviderGStreamer_h
+#define AudioSourceProviderGStreamer_h
+
+#if ENABLE(WEB_AUDIO) && ENABLE(VIDEO) && USE(GSTREAMER)
+
+#include "AudioSourceProvider.h"
+#include "GRefPtrGStreamer.h"
+#include <gst/gst.h>
+#include <wtf/Forward.h>
+#include <wtf/Noncopyable.h>
+
+typedef struct _GstAdapter GstAdapter;
+typedef struct _GstAppSink GstAppSink;
+
+namespace WebCore {
+
+class AudioSourceProviderGStreamer : public AudioSourceProvider {
+    WTF_MAKE_NONCOPYABLE(AudioSourceProviderGStreamer);
+public:
+    AudioSourceProviderGStreamer();
+    ~AudioSourceProviderGStreamer();
+
+    void configureAudioBin(GstElement* audioBin, GstElement* teePredecessor);
+
+    void provideInput(AudioBus*, size_t framesToProcess) override;
+    void setClient(AudioSourceProviderClient*) override;
+    const AudioSourceProviderClient* client() const { return m_client; }
+
+    void handleNewDeinterleavePad(GstPad*);
+    void deinterleavePadsConfigured();
+    void handleRemovedDeinterleavePad(GstPad*);
+
+    GstFlowReturn handleAudioBuffer(GstAppSink*);
+    GstElement* getAudioBin() const { return m_audioSinkBin.get(); }
+    void clearAdapters();
+
+private:
+    GRefPtr<GstElement> m_audioSinkBin;
+    AudioSourceProviderClient* m_client;
+    int m_deinterleaveSourcePads;
+    GstAdapter* m_frontLeftAdapter;
+    GstAdapter* m_frontRightAdapter;
+    unsigned long m_deinterleavePadAddedHandlerId;
+    unsigned long m_deinterleaveNoMorePadsHandlerId;
+    unsigned long m_deinterleavePadRemovedHandlerId;
+    GMutex m_adapterMutex;
+};
+
+}
+#endif // ENABLE(WEB_AUDIO) && ENABLE(VIDEO) && USE(GSTREAMER)
+
+#endif // AudioSourceProviderGStreamer_h