1 /* 2 * Copyright (C) 2010, Google Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND 14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16 * ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE 17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 19 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 20 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH 23 * DAMAGE. 24 */ 25 26 #ifndef THIRD_PARTY_BLINK_RENDERER_MODULES_WEBAUDIO_CHANNEL_SPLITTER_NODE_H_ 27 #define THIRD_PARTY_BLINK_RENDERER_MODULES_WEBAUDIO_CHANNEL_SPLITTER_NODE_H_ 28 29 #include "base/memory/scoped_refptr.h" 30 #include "third_party/blink/renderer/modules/webaudio/audio_node.h" 31 32 namespace blink { 33 34 class BaseAudioContext; 35 class ChannelSplitterOptions; 36 37 class ChannelSplitterHandler final : public AudioHandler { 38 public: 39 static scoped_refptr<ChannelSplitterHandler> 40 Create(AudioNode&, float sample_rate, unsigned number_of_outputs); 41 42 // AudioHandler 43 void Process(uint32_t frames_to_process) override; 44 void SetChannelCount(unsigned, ExceptionState&) final; 45 void SetChannelCountMode(const String&, ExceptionState&) final; 46 void SetChannelInterpretation(const String&, ExceptionState&) final; 47 TailTime()48 double TailTime() const override { return 0; } LatencyTime()49 double LatencyTime() const override { return 0; } RequiresTailProcessing()50 bool RequiresTailProcessing() const final { return false; } 51 52 private: 53 ChannelSplitterHandler(AudioNode&, 54 float sample_rate, 55 unsigned number_of_outputs); 56 }; 57 58 class ChannelSplitterNode final : public AudioNode { 59 DEFINE_WRAPPERTYPEINFO(); 60 61 public: 62 static ChannelSplitterNode* Create(BaseAudioContext&, ExceptionState&); 63 static ChannelSplitterNode* Create(BaseAudioContext&, 64 unsigned number_of_outputs, 65 ExceptionState&); 66 static ChannelSplitterNode* Create(BaseAudioContext*, 67 const ChannelSplitterOptions*, 68 ExceptionState&); 69 70 ChannelSplitterNode(BaseAudioContext&, unsigned number_of_outputs); 71 72 // InspectorHelperMixin 73 void ReportDidCreate() final; 74 void ReportWillBeDestroyed() final; 75 }; 76 77 } // namespace blink 78 79 #endif // THIRD_PARTY_BLINK_RENDERER_MODULES_WEBAUDIO_CHANNEL_SPLITTER_NODE_H_ 80