1 files changed, 101 insertions, 0 deletions
diff --git a/servers/audio/audio_stream.h b/servers/audio/audio_stream.h
new file mode 100644
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+++ b/servers/audio/audio_stream.h
@@ -0,0 +1,101 @@
+/*************************************************************************/
+/*  audio_stream.h                                                       */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                    http://www.godotengine.org                         */
+/*************************************************************************/
+/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur.                 */
+/*                                                                       */
+/* 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.                */
+/*************************************************************************/
+#ifndef AUDIO_STREAM_H
+#define AUDIO_STREAM_H
+
+#include "resource.h"
+#include "servers/audio_server.h"
+
+class AudioStreamPlayback : public Reference {
+
+	GDCLASS( AudioStreamPlayback, Reference )
+
+public:
+
+	virtual void start(float p_from_pos=0.0)=0;
+	virtual void stop()=0;
+	virtual bool is_playing() const=0;
+
+	virtual int get_loop_count() const=0; //times it looped
+
+	virtual float get_pos() const=0;
+	virtual void seek_pos(float p_time)=0;
+
+	virtual void mix(AudioFrame* p_bufer,float p_rate_scale,int p_frames)=0;
+
+	virtual float get_length() const=0; //if supported, otherwise return 0
+
+
+};
+
+class AudioStreamPlaybackResampled : public AudioStreamPlayback {
+
+	GDCLASS( AudioStreamPlaybackResampled, AudioStreamPlayback )
+
+
+
+	enum {
+		FP_BITS=16, //fixed point used for resampling
+		FP_LEN=(1<<FP_BITS),
+		FP_MASK=FP_LEN-1,
+		INTERNAL_BUFFER_LEN=256,
+		CUBIC_INTERP_HISTORY=4
+	};
+
+	AudioFrame internal_buffer[INTERNAL_BUFFER_LEN+CUBIC_INTERP_HISTORY];
+	uint64_t mix_offset;
+
+protected:
+	void _begin_resample();
+	virtual void _mix_internal(AudioFrame* p_bufer,int p_frames)=0;
+	virtual float get_stream_sampling_rate()=0;
+
+public:
+
+	virtual void mix(AudioFrame* p_bufer,float p_rate_scale,int p_frames);
+
+	AudioStreamPlaybackResampled() { mix_offset=0;  }
+};
+
+class AudioStream : public Resource {
+
+	GDCLASS( AudioStream, Resource )
+	OBJ_SAVE_TYPE( AudioStream ) //children are all saved as AudioStream, so they can be exchanged
+
+
+public:
+
+	virtual Ref<AudioStreamPlayback> instance_playback()=0;
+	virtual String get_stream_name() const=0;
+
+
+};
+
+
+#endif // AUDIO_STREAM_H