From 1bf1084f2b10c3b47fd1a588d85d21ed0eb41d0c Mon Sep 17 00:00:00 2001
From: Lorry Tar Creator <lorry-tar-importer@lorry>
Date: Tue, 27 Jun 2017 06:07:23 +0000
Subject: webkitgtk-2.16.5

---
 .../Modules/webaudio/AudioBufferSourceNode.h       | 54 +++++++++-------------
 1 file changed, 23 insertions(+), 31 deletions(-)

(limited to 'Source/WebCore/Modules/webaudio/AudioBufferSourceNode.h')

diff --git a/Source/WebCore/Modules/webaudio/AudioBufferSourceNode.h b/Source/WebCore/Modules/webaudio/AudioBufferSourceNode.h
index 15fc56a0b..f4e63a859 100644
--- a/Source/WebCore/Modules/webaudio/AudioBufferSourceNode.h
+++ b/Source/WebCore/Modules/webaudio/AudioBufferSourceNode.h
@@ -22,40 +22,32 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef AudioBufferSourceNode_h
-#define AudioBufferSourceNode_h
+#pragma once
 
-#include "AudioBuffer.h"
-#include "AudioBus.h"
-#include "AudioParam.h"
 #include "AudioScheduledSourceNode.h"
-#include "ExceptionCode.h"
-#include "PannerNode.h"
-#include <memory>
-#include <mutex>
-#include <wtf/PassRefPtr.h>
-#include <wtf/RefPtr.h>
+#include <wtf/Lock.h>
 
 namespace WebCore {
 
-class AudioContext;
+class AudioBuffer;
+class PannerNode;
 
 // AudioBufferSourceNode is an AudioNode representing an audio source from an in-memory audio asset represented by an AudioBuffer.
 // It generally will be used for short sounds which require a high degree of scheduling flexibility (can playback in rhythmically perfect ways).
 
-class AudioBufferSourceNode : public AudioScheduledSourceNode {
+class AudioBufferSourceNode final : public AudioScheduledSourceNode {
 public:
-    static PassRefPtr<AudioBufferSourceNode> create(AudioContext*, float sampleRate);
+    static Ref<AudioBufferSourceNode> create(AudioContext&, float sampleRate);
 
     virtual ~AudioBufferSourceNode();
 
     // AudioNode
-    virtual void process(size_t framesToProcess) override;
-    virtual void reset() override;
+    void process(size_t framesToProcess) final;
+    void reset() final;
 
     // setBuffer() is called on the main thread.  This is the buffer we use for playback.
     // returns true on success.
-    bool setBuffer(AudioBuffer*);
+    void setBuffer(RefPtr<AudioBuffer>&&);
     AudioBuffer* buffer() { return m_buffer.get(); }
 
     // numberOfChannels() returns the number of output channels.  This value equals the number of channels from the buffer.
@@ -63,12 +55,7 @@ public:
     unsigned numberOfChannels();
 
     // Play-state
-    void startGrain(double when, double grainOffset, ExceptionCode&);
-    void startGrain(double when, double grainOffset, double grainDuration, ExceptionCode&);
-
-#if ENABLE(LEGACY_WEB_AUDIO)
-    void noteGrainOn(double when, double grainOffset, double grainDuration, ExceptionCode&);
-#endif
+    ExceptionOr<void> start(double when, double grainOffset, std::optional<double> grainDuration);
 
     // Note: the attribute was originally exposed as .looping, but to be more consistent in naming with <audio>
     // and with how it's described in the specification, the proper attribute name is .loop
@@ -94,16 +81,23 @@ public:
     void clearPannerNode();
 
     // If we are no longer playing, propogate silence ahead to downstream nodes.
-    virtual bool propagatesSilence() const override;
+    bool propagatesSilence() const final;
 
     // AudioScheduledSourceNode
-    virtual void finish() override;
+    void finish() final;
 
 private:
-    AudioBufferSourceNode(AudioContext*, float sampleRate);
+    AudioBufferSourceNode(AudioContext&, float sampleRate);
+
+    double tailTime() const final { return 0; }
+    double latencyTime() const final { return 0; }
 
-    virtual double tailTime() const override { return 0; }
-    virtual double latencyTime() const override { return 0; }
+    enum BufferPlaybackMode {
+        Entire,
+        Partial
+    };
+
+    ExceptionOr<void> startPlaying(BufferPlaybackMode, double when, double grainOffset, double grainDuration);
 
     // Returns true on success.
     bool renderFromBuffer(AudioBus*, unsigned destinationFrameOffset, size_t numberOfFrames);
@@ -150,9 +144,7 @@ private:
     PannerNode* m_pannerNode;
 
     // This synchronizes process() with setBuffer() which can cause dynamic channel count changes.
-    mutable std::mutex m_processMutex;
+    mutable Lock m_processMutex;
 };
 
 } // namespace WebCore
-
-#endif // AudioBufferSourceNode_h
-- 
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