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<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/198957">198957</a></dd>
<dt>Author</dt> <dd>matthew_hanson@apple.com</dd>
<dt>Date</dt> <dd>2016-04-01 14:44:30 -0700 (Fri, 01 Apr 2016)</dd>
</dl>
<h3>Log Message</h3>
<pre>Roll out <a href="http://trac.webkit.org/projects/webkit/changeset/198035">r198035</a> via <a href="http://trac.webkit.org/projects/webkit/changeset/198903">r198903</a>. rdar://problem/25467558</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#branchessafari601146branchSourceWebCoreChangeLog">branches/safari-601.1.46-branch/Source/WebCore/ChangeLog</a></li>
<li><a href="#branchessafari601146branchSourceWebCoreplatformaudioAudioBuscpp">branches/safari-601.1.46-branch/Source/WebCore/platform/audio/AudioBus.cpp</a></li>
<li><a href="#branchessafari601146branchSourceWebCoreplatformaudioAudioBush">branches/safari-601.1.46-branch/Source/WebCore/platform/audio/AudioBus.h</a></li>
<li><a href="#branchessafari601146branchSourceWebCoreplatformaudioiosAudioDestinationIOScpp">branches/safari-601.1.46-branch/Source/WebCore/platform/audio/ios/AudioDestinationIOS.cpp</a></li>
<li><a href="#branchessafari601146branchSourceWebCoreplatformaudioiosAudioDestinationIOSh">branches/safari-601.1.46-branch/Source/WebCore/platform/audio/ios/AudioDestinationIOS.h</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="branchessafari601146branchSourceWebCoreChangeLog"></a>
<div class="modfile"><h4>Modified: branches/safari-601.1.46-branch/Source/WebCore/ChangeLog (198956 => 198957)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-601.1.46-branch/Source/WebCore/ChangeLog 2016-04-01 21:40:20 UTC (rev 198956)
+++ branches/safari-601.1.46-branch/Source/WebCore/ChangeLog 2016-04-01 21:44:30 UTC (rev 198957)
</span><span class="lines">@@ -1,3 +1,7 @@
</span><ins>+2016-04-01 Matthew Hanson <matthew_hanson@apple.com>
+
+ Rollout r198903. rdar://problem/25467558
+
</ins><span class="cx"> 2016-03-31 Matthew Hanson <matthew_hanson@apple.com>
</span><span class="cx">
</span><span class="cx"> Roll out r191180. rdar://problem/25449273
</span></span></pre></div>
<a id="branchessafari601146branchSourceWebCoreplatformaudioAudioBuscpp"></a>
<div class="modfile"><h4>Modified: branches/safari-601.1.46-branch/Source/WebCore/platform/audio/AudioBus.cpp (198956 => 198957)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-601.1.46-branch/Source/WebCore/platform/audio/AudioBus.cpp 2016-04-01 21:40:20 UTC (rev 198956)
+++ branches/safari-601.1.46-branch/Source/WebCore/platform/audio/AudioBus.cpp 2016-04-01 21:44:30 UTC (rev 198957)
</span><span class="lines">@@ -213,33 +213,6 @@
</span><span class="cx"> channel(i)->scale(scale);
</span><span class="cx"> }
</span><span class="cx">
</span><del>-void AudioBus::copyFromRange(const AudioBus& sourceBus, unsigned startFrame, unsigned endFrame)
-{
- if (!topologyMatches(sourceBus)) {
- ASSERT_NOT_REACHED();
- zero();
- return;
- }
-
- size_t numberOfSourceFrames = sourceBus.length();
- bool isRangeSafe = startFrame < endFrame && endFrame <= numberOfSourceFrames;
- ASSERT(isRangeSafe);
- if (!isRangeSafe) {
- zero();
- return;
- }
-
- unsigned numberOfChannels = this->numberOfChannels();
- ASSERT(numberOfChannels <= MaxBusChannels);
- if (numberOfChannels > MaxBusChannels) {
- zero();
- return;
- }
-
- for (unsigned i = 0; i < numberOfChannels; ++i)
- channel(i)->copyFromRange(sourceBus.channel(i), startFrame, endFrame);
-}
-
</del><span class="cx"> void AudioBus::copyFrom(const AudioBus& sourceBus, ChannelInterpretation channelInterpretation)
</span><span class="cx"> {
</span><span class="cx"> if (&sourceBus == this)
</span></span></pre></div>
<a id="branchessafari601146branchSourceWebCoreplatformaudioAudioBush"></a>
<div class="modfile"><h4>Modified: branches/safari-601.1.46-branch/Source/WebCore/platform/audio/AudioBus.h (198956 => 198957)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-601.1.46-branch/Source/WebCore/platform/audio/AudioBus.h 2016-04-01 21:40:20 UTC (rev 198956)
+++ branches/safari-601.1.46-branch/Source/WebCore/platform/audio/AudioBus.h 2016-04-01 21:44:30 UTC (rev 198957)
</span><span class="lines">@@ -122,9 +122,6 @@
</span><span class="cx"> void reset() { m_isFirstTime = true; } // for de-zippering
</span><span class="cx">
</span><span class="cx"> // Copies the samples from the source bus to this one.
</span><del>- void copyFromRange(const AudioBus& sourceBus, unsigned startFrame, unsigned endFrame);
-
- // Copies the samples from the source bus to this one.
</del><span class="cx"> // This is just a simple per-channel copy if the number of channels match, otherwise an up-mix or down-mix is done.
</span><span class="cx"> void copyFrom(const AudioBus& sourceBus, ChannelInterpretation = Speakers);
</span><span class="cx">
</span></span></pre></div>
<a id="branchessafari601146branchSourceWebCoreplatformaudioiosAudioDestinationIOScpp"></a>
<div class="modfile"><h4>Modified: branches/safari-601.1.46-branch/Source/WebCore/platform/audio/ios/AudioDestinationIOS.cpp (198956 => 198957)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-601.1.46-branch/Source/WebCore/platform/audio/ios/AudioDestinationIOS.cpp 2016-04-01 21:40:20 UTC (rev 198956)
+++ branches/safari-601.1.46-branch/Source/WebCore/platform/audio/ios/AudioDestinationIOS.cpp 2016-04-01 21:44:30 UTC (rev 198957)
</span><span class="lines">@@ -100,7 +100,6 @@
</span><span class="cx"> : m_outputUnit(0)
</span><span class="cx"> , m_callback(callback)
</span><span class="cx"> , m_renderBus(AudioBus::create(2, kRenderBufferSize, false))
</span><del>- , m_spareBus(AudioBus::create(2, kRenderBufferSize, true))
</del><span class="cx"> , m_sampleRate(sampleRate)
</span><span class="cx"> , m_isPlaying(false)
</span><span class="cx"> {
</span><span class="lines">@@ -199,47 +198,19 @@
</span><span class="cx"> setIsPlaying(false);
</span><span class="cx"> }
</span><span class="cx">
</span><del>-static void assignAudioBuffersToBus(AudioBuffer* buffers, AudioBus& bus, UInt32 numberOfBuffers, UInt32 numberOfFrames, UInt32 frameOffset, UInt32 framesThisTime)
-{
- for (UInt32 i = 0; i < numberOfBuffers; ++i) {
- UInt32 bytesPerFrame = buffers[i].mDataByteSize / numberOfFrames;
- UInt32 byteOffset = frameOffset * bytesPerFrame;
- float* memory = reinterpret_cast<float*>(reinterpret_cast<char*>(buffers[i].mData) + byteOffset);
- bus.setChannelMemory(i, memory, framesThisTime);
- }
-}
-
</del><span class="cx"> // Pulls on our provider to get rendered audio stream.
</span><span class="cx"> OSStatus AudioDestinationIOS::render(UInt32 numberOfFrames, AudioBufferList* ioData)
</span><span class="cx"> {
</span><span class="cx"> AudioBuffer* buffers = ioData->mBuffers;
</span><del>- UInt32 numberOfBuffers = ioData->mNumberBuffers;
- UInt32 framesRemaining = numberOfFrames;
- UInt32 frameOffset = 0;
- while (framesRemaining > 0) {
- if (m_firstSpareFrame && m_lastSpareFrame) {
- ASSERT(m_firstSpareFrame < m_lastSpareFrame);
- UInt32 framesThisTime = m_lastSpareFrame - m_firstSpareFrame;
- assignAudioBuffersToBus(buffers, *m_renderBus, numberOfBuffers, numberOfFrames, frameOffset, framesThisTime);
- m_renderBus->copyFromRange(*m_spareBus, m_firstSpareFrame, m_lastSpareFrame);
- frameOffset += framesThisTime;
- framesRemaining -= framesThisTime;
- m_firstSpareFrame = 0;
- m_lastSpareFrame = 0;
</del><ins>+ for (UInt32 frameOffset = 0; frameOffset + kRenderBufferSize <= numberOfFrames; frameOffset += kRenderBufferSize) {
+ UInt32 remainingFrames = std::min<UInt32>(kRenderBufferSize, numberOfFrames - frameOffset);
+ for (UInt32 i = 0; i < ioData->mNumberBuffers; ++i) {
+ UInt32 bytesPerFrame = buffers[i].mDataByteSize / numberOfFrames;
+ UInt32 byteOffset = frameOffset * bytesPerFrame;
+ float* memory = (float*)((char*)buffers[i].mData + byteOffset);
+ m_renderBus->setChannelMemory(i, memory, remainingFrames);
</ins><span class="cx"> }
</span><del>-
- UInt32 framesThisTime = std::min<UInt32>(kRenderBufferSize, framesRemaining);
- assignAudioBuffersToBus(buffers, *m_renderBus, numberOfBuffers, numberOfFrames, frameOffset, framesThisTime);
-
- if (framesThisTime < kRenderBufferSize) {
- m_callback.render(0, m_spareBus.get(), kRenderBufferSize);
- m_renderBus->copyFromRange(*m_spareBus, 0, framesThisTime);
- m_firstSpareFrame = framesThisTime;
- m_lastSpareFrame = kRenderBufferSize - 1;
- } else
- m_callback.render(0, m_renderBus.get(), framesThisTime);
- frameOffset += framesThisTime;
- framesRemaining -= framesThisTime;
</del><ins>+ m_callback.render(0, m_renderBus.get(), remainingFrames);
</ins><span class="cx"> }
</span><span class="cx">
</span><span class="cx"> return noErr;
</span></span></pre></div>
<a id="branchessafari601146branchSourceWebCoreplatformaudioiosAudioDestinationIOSh"></a>
<div class="modfile"><h4>Modified: branches/safari-601.1.46-branch/Source/WebCore/platform/audio/ios/AudioDestinationIOS.h (198956 => 198957)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-601.1.46-branch/Source/WebCore/platform/audio/ios/AudioDestinationIOS.h 2016-04-01 21:40:20 UTC (rev 198956)
+++ branches/safari-601.1.46-branch/Source/WebCore/platform/audio/ios/AudioDestinationIOS.h 2016-04-01 21:44:30 UTC (rev 198957)
</span><span class="lines">@@ -65,9 +65,6 @@
</span><span class="cx"> AudioUnit m_outputUnit;
</span><span class="cx"> AudioIOCallback& m_callback;
</span><span class="cx"> RefPtr<AudioBus> m_renderBus;
</span><del>- RefPtr<AudioBus> m_spareBus;
- unsigned m_firstSpareFrame { 0 };
- unsigned m_lastSpareFrame { 0 };
</del><span class="cx">
</span><span class="cx"> double m_sampleRate;
</span><span class="cx"> bool m_isPlaying;
</span></span></pre>
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