Index: Source/modules/webaudio/OfflineAudioContext.h |
diff --git a/Source/modules/webaudio/OfflineAudioContext.h b/Source/modules/webaudio/OfflineAudioContext.h |
index 99276e7cbb5e19dc7edf2934b67a726f2eed8d2a..abf9a8d7033956ac4efa98a3e8de05f76e38a7f3 100644 |
--- a/Source/modules/webaudio/OfflineAudioContext.h |
+++ b/Source/modules/webaudio/OfflineAudioContext.h |
@@ -27,10 +27,15 @@ |
#include "modules/ModulesExport.h" |
#include "modules/webaudio/AudioContext.h" |
+#include "wtf/HashMap.h" |
namespace blink { |
class ExceptionState; |
+class ScheduledSuspendContainer; |
+ |
+// The HashMap with 'zero' key is needed because |currentSampleFrame| can be zero. |
+using SuspendContainerMap = HashMap<size_t, RefPtr<ScheduledSuspendContainer>, DefaultHash<size_t>::Hash, WTF::UnsignedWithZeroKeyHashTraits<size_t>>; |
class MODULES_EXPORT OfflineAudioContext final : public AudioContext { |
DEFINE_WRAPPERTYPEINFO(); |
@@ -39,9 +44,81 @@ public: |
virtual ~OfflineAudioContext(); |
+ DECLARE_VIRTUAL_TRACE(); |
+ |
+ // Fire completion event when the rendering is finished. |
+ void fireCompletionEvent() override; |
+ |
+ // Check all the scheduled suspends if the context should suspend at |
+ // currentTime(). Then post tasks to resolve promises on the main thread |
+ // if necessary. |
+ bool shouldSuspendNow() override; |
+ |
+ // Clear suspensions marked as 'resolved' in the list. |
+ void resolvePendingSuspendPromises() override; |
+ |
+ DEFINE_ATTRIBUTE_EVENT_LISTENER(complete); |
+ |
ScriptPromise startOfflineRendering(ScriptState*); |
+ ScriptPromise suspendOfflineRendering(ScriptState*, double); |
+ ScriptPromise resumeOfflineRendering(ScriptState*); |
+ |
private: |
OfflineAudioContext(Document*, unsigned numberOfChannels, size_t numberOfFrames, float sampleRate); |
+ |
+ // Check if there is any duplicate entry in scheduled suspends and reject |
+ // the promise if needed. |
+ void checkDuplicateSuspend(PassRefPtr<ScheduledSuspendContainer>); |
+ |
+ // Reject a suspend promise on the main thread when the validation fails. |
+ void rejectSuspendPromiseOnMainThread(PassRefPtr<ScheduledSuspendContainer>); |
+ |
+ // Resolve a pending suspend promise and removes it from the map. |
+ void resolvePendingSuspendPromisesOnMainThread(PassRefPtr<ScheduledSuspendContainer>); |
+ |
+ SuspendContainerMap m_scheduledSuspends; |
+ RefPtrWillBeMember<ScriptPromiseResolver> m_completeResolver; |
+ |
+ // This flag is necessary to indicate the rendering has actually started. |
+ // Note that initial state of context is 'Suspended', which is the same |
+ // state when the context is suspended. |
+ bool m_isRenderingStarted; |
+ |
+ // Total render sample length. |
+ size_t m_totalRenderFrames; |
+}; |
+ |
+// A container class for a pair of time information and the suspend promise |
+// resolver. |
+// |
+// TODO: This class is |ThreadSafeRefCounted| because it needs to be accessed by |
haraken
2015/06/30 07:41:51
Add your name to TODO.
hongchan
2015/06/30 18:52:10
Done.
|
+// the offline render thread which is not oilpan-enabled. This is a short-term |
+// solution until the offline render thread gets oilpan coverage. |
+class ScheduledSuspendContainer : public ThreadSafeRefCounted<ScheduledSuspendContainer> { |
+public: |
+ static PassRefPtr<ScheduledSuspendContainer> create(double suspendTime, size_t suspendFrame, PassRefPtrWillBeRawPtr<ScriptPromiseResolver>); |
+ ~ScheduledSuspendContainer(); |
+ |
+ PassRefPtrWillBeRawPtr<ScriptPromiseResolver> resolver() { return m_resolver; } |
haraken
2015/06/30 07:41:51
I guess this should be ScriptPromiseResolver*, bec
hongchan
2015/06/30 18:52:10
I made this change from the suggestion from yhiran
|
+ |
+ double suspendTime() const { return m_suspendTime; } |
+ |
+ size_t suspendFrame() const { return m_suspendFrame; } |
+ |
+ // Query if the rendering should be suspended at |whenFrame|. |
+ bool shouldSuspendAtFrame(size_t whenFrame) const; |
+ |
+private: |
+ ScheduledSuspendContainer(double suspendTime, size_t suspendFrame, PassRefPtrWillBeRawPtr<ScriptPromiseResolver>); |
+ |
+ // Actual suspend time before the quantization by render quantum frame. |
+ double m_suspendTime; |
+ |
+ // Suspend sample frame. This is quantized by the render quantum size. |
+ size_t m_suspendFrame; |
+ |
+ // Associated promise resolver. |
+ RefPtrWillBePersistent<ScriptPromiseResolver> m_resolver; |
}; |
} // namespace blink |