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<title>[211437] trunk/Source/WebCore</title>
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<dl class="meta">
<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/211437">211437</a></dd>
<dt>Author</dt> <dd>eric.carlson@apple.com</dd>
<dt>Date</dt> <dd>2017-01-31 10:18:44 -0800 (Tue, 31 Jan 2017)</dd>
</dl>
<h3>Log Message</h3>
<pre>[Mac] Add an audio stream description class
https://bugs.webkit.org/show_bug.cgi?id=167639
Reviewed by Youenn Fablet.
No new tests, the new class is not used yet.
* WebCore.xcodeproj/project.pbxproj:
* platform/audio/AudioStreamDescription.h: Added.
(WebCore::AudioStreamDescription::isPCM):
* platform/audio/mac/CAAudioStreamDescription.cpp: Added.
(WebCore::CAAudioStreamDescription::CAAudioStreamDescription):
(WebCore::CAAudioStreamDescription::platformDescription):
(WebCore::CAAudioStreamDescription::format):
(WebCore::toCAAudioStreamDescription):
(WebCore::CAAudioStreamDescription::operator==):
(WebCore::operator==):
* platform/audio/mac/CAAudioStreamDescription.h: Added.
(WebCore::operator!=):
(WebCore::CAAudioStreamDescription::bytesPerFrame):
(WebCore::CAAudioStreamDescription::bytesPerPacket):
(WebCore::CAAudioStreamDescription::formatFlags):
(WebCore::CAAudioStreamDescription::operator==):
(WebCore::CAAudioStreamDescription::operator!=):
(WebCore::CAAudioStreamDescription::streamDescription):</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkSourceWebCoreChangeLog">trunk/Source/WebCore/ChangeLog</a></li>
<li><a href="#trunkSourceWebCoreWebCorexcodeprojprojectpbxproj">trunk/Source/WebCore/WebCore.xcodeproj/project.pbxproj</a></li>
</ul>
<h3>Added Paths</h3>
<ul>
<li><a href="#trunkSourceWebCoreplatformaudioAudioStreamDescriptionh">trunk/Source/WebCore/platform/audio/AudioStreamDescription.h</a></li>
<li><a href="#trunkSourceWebCoreplatformaudiomacCAAudioStreamDescriptioncpp">trunk/Source/WebCore/platform/audio/mac/CAAudioStreamDescription.cpp</a></li>
<li><a href="#trunkSourceWebCoreplatformaudiomacCAAudioStreamDescriptionh">trunk/Source/WebCore/platform/audio/mac/CAAudioStreamDescription.h</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkSourceWebCoreChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/ChangeLog (211436 => 211437)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/ChangeLog 2017-01-31 17:52:33 UTC (rev 211436)
+++ trunk/Source/WebCore/ChangeLog 2017-01-31 18:18:44 UTC (rev 211437)
</span><span class="lines">@@ -1,3 +1,31 @@
</span><ins>+2017-01-31 Eric Carlson <eric.carlson@apple.com>
+
+ [Mac] Add an audio stream description class
+ https://bugs.webkit.org/show_bug.cgi?id=167639
+
+ Reviewed by Youenn Fablet.
+
+ No new tests, the new class is not used yet.
+
+ * WebCore.xcodeproj/project.pbxproj:
+ * platform/audio/AudioStreamDescription.h: Added.
+ (WebCore::AudioStreamDescription::isPCM):
+ * platform/audio/mac/CAAudioStreamDescription.cpp: Added.
+ (WebCore::CAAudioStreamDescription::CAAudioStreamDescription):
+ (WebCore::CAAudioStreamDescription::platformDescription):
+ (WebCore::CAAudioStreamDescription::format):
+ (WebCore::toCAAudioStreamDescription):
+ (WebCore::CAAudioStreamDescription::operator==):
+ (WebCore::operator==):
+ * platform/audio/mac/CAAudioStreamDescription.h: Added.
+ (WebCore::operator!=):
+ (WebCore::CAAudioStreamDescription::bytesPerFrame):
+ (WebCore::CAAudioStreamDescription::bytesPerPacket):
+ (WebCore::CAAudioStreamDescription::formatFlags):
+ (WebCore::CAAudioStreamDescription::operator==):
+ (WebCore::CAAudioStreamDescription::operator!=):
+ (WebCore::CAAudioStreamDescription::streamDescription):
+
</ins><span class="cx"> 2017-01-31 Youenn Fablet <youenn@apple.com>
</span><span class="cx">
</span><span class="cx"> RTCPeerConnection methods can take dictionaries as input
</span></span></pre></div>
<a id="trunkSourceWebCoreWebCorexcodeprojprojectpbxproj"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/WebCore.xcodeproj/project.pbxproj (211436 => 211437)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/WebCore.xcodeproj/project.pbxproj 2017-01-31 17:52:33 UTC (rev 211436)
+++ trunk/Source/WebCore/WebCore.xcodeproj/project.pbxproj 2017-01-31 18:18:44 UTC (rev 211437)
</span><span class="lines">@@ -7218,6 +7218,9 @@
</span><span class="cx"> 073794F819F5864E00E5A045 /* RTCNotifiersMock.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = RTCNotifiersMock.h; sourceTree = "<group>"; };
</span><span class="cx"> 07394EC71BAB2CCD00BE99CD /* MediaDevicesRequest.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = MediaDevicesRequest.cpp; sourceTree = "<group>"; };
</span><span class="cx"> 07394EC91BAB2CD700BE99CD /* MediaDevicesRequest.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = MediaDevicesRequest.h; sourceTree = "<group>"; };
</span><ins>+ 073B87561E40DCE50071C0EC /* AudioStreamDescription.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = AudioStreamDescription.h; sourceTree = "<group>"; };
+ 073B87571E40DCFD0071C0EC /* CAAudioStreamDescription.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = CAAudioStreamDescription.cpp; sourceTree = "<group>"; };
+ 073B87581E40DCFD0071C0EC /* CAAudioStreamDescription.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = CAAudioStreamDescription.h; sourceTree = "<group>"; };
</ins><span class="cx"> 073BE33E17D17E01002BD431 /* JSNavigatorUserMedia.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = JSNavigatorUserMedia.cpp; sourceTree = "<group>"; };
</span><span class="cx"> 073BE33F17D17E01002BD431 /* JSNavigatorUserMedia.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = JSNavigatorUserMedia.h; sourceTree = "<group>"; };
</span><span class="cx"> 0744ECEB1E0C4AE5000D0944 /* MockRealtimeAudioSourceMac.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = MockRealtimeAudioSourceMac.h; sourceTree = "<group>"; };
</span><span class="lines">@@ -24784,6 +24787,7 @@
</span><span class="cx"> FD31604012B026A300C1A359 /* audio */ = {
</span><span class="cx"> isa = PBXGroup;
</span><span class="cx"> children = (
</span><ins>+ 073B87561E40DCE50071C0EC /* AudioStreamDescription.h */,
</ins><span class="cx"> CD669D651D232DF4004D1866 /* cocoa */,
</span><span class="cx"> CD0EEE0D14743E48003EAFA2 /* ios */,
</span><span class="cx"> FD3160B012B0270700C1A359 /* mac */,
</span><span class="lines">@@ -24876,6 +24880,8 @@
</span><span class="cx"> FD3160B012B0270700C1A359 /* mac */ = {
</span><span class="cx"> isa = PBXGroup;
</span><span class="cx"> children = (
</span><ins>+ 073B87571E40DCFD0071C0EC /* CAAudioStreamDescription.cpp */,
+ 073B87581E40DCFD0071C0EC /* CAAudioStreamDescription.h */,
</ins><span class="cx"> FD3160B512B0272A00C1A359 /* AudioBusMac.mm */,
</span><span class="cx"> FD3160B612B0272A00C1A359 /* AudioDestinationMac.cpp */,
</span><span class="cx"> FD3160B712B0272A00C1A359 /* AudioDestinationMac.h */,
</span></span></pre></div>
<a id="trunkSourceWebCoreplatformaudioAudioStreamDescriptionh"></a>
<div class="addfile"><h4>Added: trunk/Source/WebCore/platform/audio/AudioStreamDescription.h (0 => 211437)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/platform/audio/AudioStreamDescription.h (rev 0)
+++ trunk/Source/WebCore/platform/audio/AudioStreamDescription.h 2017-01-31 18:18:44 UTC (rev 211437)
</span><span class="lines">@@ -0,0 +1,70 @@
</span><ins>+/*
+ * Copyright (C) 2017 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#pragma once
+
+#include <wtf/Variant.h>
+
+typedef struct AudioStreamBasicDescription AudioStreamBasicDescription;
+
+namespace WebCore {
+
+struct PlatformDescription {
+ enum {
+ None,
+ CAAudioStreamBasicType,
+ } type;
+ Variant<std::nullptr_t, const AudioStreamBasicDescription*> description;
+};
+
+class AudioStreamDescription {
+public:
+ virtual ~AudioStreamDescription() = default;
+
+ virtual const PlatformDescription& platformDescription() const = 0;
+
+ enum PCMFormat {
+ None,
+ Int16,
+ Float32,
+ Float64
+ };
+ virtual PCMFormat format() const = 0;
+
+ virtual double sampleRate() const = 0;
+
+ virtual bool isPCM() const { return format() != None; }
+ virtual bool isInterleaved() const = 0;
+ virtual bool isSignedInteger() const = 0;
+ virtual bool isFloat() const = 0;
+ virtual bool isNativeEndian() const = 0;
+
+ virtual uint32_t numberOfInterleavedChannels() const = 0;
+ virtual uint32_t numberOfChannelStreams() const = 0;
+ virtual uint32_t numberOfChannels() const = 0;
+ virtual uint32_t sampleWordSize() const = 0;
+};
+
+}
</ins></span></pre></div>
<a id="trunkSourceWebCoreplatformaudiomacCAAudioStreamDescriptioncpp"></a>
<div class="addfile"><h4>Added: trunk/Source/WebCore/platform/audio/mac/CAAudioStreamDescription.cpp (0 => 211437)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/platform/audio/mac/CAAudioStreamDescription.cpp (rev 0)
+++ trunk/Source/WebCore/platform/audio/mac/CAAudioStreamDescription.cpp 2017-01-31 18:18:44 UTC (rev 211437)
</span><span class="lines">@@ -0,0 +1,148 @@
</span><ins>+/*
+ * Copyright (C) 2017 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+#include "CAAudioStreamDescription.h"
+
+namespace WebCore {
+
+CAAudioStreamDescription::CAAudioStreamDescription(const AudioStreamBasicDescription &desc)
+ : m_streamDescription(desc)
+{
+}
+
+CAAudioStreamDescription::CAAudioStreamDescription(double sampleRate, UInt32 numChannels, PCMFormat format, bool isInterleaved)
+{
+ m_streamDescription.mFormatID = kAudioFormatLinearPCM;
+ m_streamDescription.mSampleRate = sampleRate;
+ m_streamDescription.mFramesPerPacket = 1;
+ m_streamDescription.mChannelsPerFrame = numChannels;
+ m_streamDescription.mBytesPerFrame = 0;
+ m_streamDescription.mBytesPerPacket = 0;
+ m_streamDescription.mFormatFlags = kAudioFormatFlagsNativeEndian | kAudioFormatFlagIsPacked;
+ m_streamDescription.mReserved = 0;
+
+ int wordsize;
+ switch (format) {
+ case Float32:
+ wordsize = 4;
+ m_streamDescription.mFormatFlags |= kAudioFormatFlagIsFloat;
+ break;
+ case Float64:
+ wordsize = 8;
+ m_streamDescription.mFormatFlags |= kAudioFormatFlagIsFloat;
+ break;
+ case Int16:
+ wordsize = 2;
+ m_streamDescription.mFormatFlags |= kAudioFormatFlagIsSignedInteger;
+ break;
+ case None:
+ ASSERT_NOT_REACHED();
+ }
+
+ m_streamDescription.mBitsPerChannel = wordsize * 8;
+ if (isInterleaved)
+ m_streamDescription.mBytesPerFrame = m_streamDescription.mBytesPerPacket = wordsize * numChannels;
+ else {
+ m_streamDescription.mFormatFlags |= kAudioFormatFlagIsNonInterleaved;
+ m_streamDescription.mBytesPerFrame = m_streamDescription.mBytesPerPacket = wordsize;
+ }
+}
+
+const PlatformDescription& CAAudioStreamDescription::platformDescription() const
+{
+ m_platformDescription = { PlatformDescription::CAAudioStreamBasicType, &m_streamDescription };
+ return m_platformDescription;
+}
+
+AudioStreamDescription::PCMFormat CAAudioStreamDescription::format() const
+{
+ if (m_format != None)
+ return m_format;
+
+ if (m_streamDescription.mFormatID != kAudioFormatLinearPCM)
+ return None;
+ if (m_streamDescription.mFramesPerPacket != 1)
+ return None;
+ if (m_streamDescription.mBytesPerFrame != m_streamDescription.mBytesPerPacket)
+ return None;
+ if (m_streamDescription.mBitsPerChannel / sizeof(double) > m_streamDescription.mBytesPerFrame)
+ return None;
+ if (!m_streamDescription.mChannelsPerFrame)
+ return None;
+
+ unsigned wordsize = m_streamDescription.mBytesPerFrame;
+ if (isInterleaved()) {
+ if (wordsize % m_streamDescription.mChannelsPerFrame)
+ return None;
+
+ wordsize /= m_streamDescription.mChannelsPerFrame;
+ }
+
+ if (isNativeEndian() && wordsize * sizeof(double) == m_streamDescription.mBitsPerChannel) {
+ // Packed and native endian, good
+ if (m_streamDescription.mFormatFlags & kLinearPCMFormatFlagIsFloat) {
+ if (m_streamDescription.mFormatFlags & (kLinearPCMFormatFlagIsSignedInteger | kLinearPCMFormatFlagsSampleFractionMask))
+ return None;
+
+ if (wordsize == sizeof(float))
+ return m_format = Float32;
+ else if (wordsize == sizeof(double))
+ return m_format = Float64;
+
+ return None;
+ }
+
+ if (m_streamDescription.mFormatFlags & kLinearPCMFormatFlagIsSignedInteger) {
+ unsigned fractionBits = (m_streamDescription.mFormatFlags & kLinearPCMFormatFlagsSampleFractionMask) >> kLinearPCMFormatFlagsSampleFractionShift;
+ if (wordsize == 2 && !fractionBits)
+ return m_format = Int16;
+ }
+ }
+
+ return None;
+}
+
+bool CAAudioStreamDescription::operator==(const AudioStreamDescription& other)
+{
+ if (other.platformDescription().type != PlatformDescription::CAAudioStreamBasicType)
+ return false;
+
+ return operator==(*WTF::get<const AudioStreamBasicDescription*>(other.platformDescription().description));
+}
+
+bool operator==(const AudioStreamBasicDescription& a, const AudioStreamBasicDescription& b)
+{
+ return a.mSampleRate == b.mSampleRate
+ && a.mFormatID == b.mFormatID
+ && a.mFormatFlags == b.mFormatFlags
+ && a.mBytesPerPacket == b.mBytesPerPacket
+ && a.mFramesPerPacket == b.mFramesPerPacket
+ && a.mBytesPerFrame == b.mBytesPerFrame
+ && a.mChannelsPerFrame == b.mChannelsPerFrame
+ && a.mBitsPerChannel == b.mBitsPerChannel;
+}
+
+}
</ins></span></pre></div>
<a id="trunkSourceWebCoreplatformaudiomacCAAudioStreamDescriptionh"></a>
<div class="addfile"><h4>Added: trunk/Source/WebCore/platform/audio/mac/CAAudioStreamDescription.h (0 => 211437)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/platform/audio/mac/CAAudioStreamDescription.h (rev 0)
+++ trunk/Source/WebCore/platform/audio/mac/CAAudioStreamDescription.h 2017-01-31 18:18:44 UTC (rev 211437)
</span><span class="lines">@@ -0,0 +1,83 @@
</span><ins>+/*
+ * Copyright (C) 2017 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#pragma once
+
+#include "AudioStreamDescription.h"
+#include <CoreAudio/CoreAudioTypes.h>
+
+namespace WebCore {
+
+bool operator==(const AudioStreamBasicDescription&, const AudioStreamBasicDescription&);
+inline bool operator!=(const AudioStreamBasicDescription& a, const AudioStreamBasicDescription& b) { return !(a == b); }
+
+class CAAudioStreamDescription final : public AudioStreamDescription {
+public:
+ CAAudioStreamDescription(const AudioStreamBasicDescription&);
+ CAAudioStreamDescription(double, uint32_t, PCMFormat, bool);
+
+ const PlatformDescription& platformDescription() const final;
+
+ PCMFormat format() const final;
+
+ double sampleRate() const final { return m_streamDescription.mSampleRate; }
+
+ bool isInterleaved() const final { return !(m_streamDescription.mFormatFlags & kAudioFormatFlagIsNonInterleaved); }
+ bool isSignedInteger() const final { return isPCM() && (m_streamDescription.mFormatFlags & kAudioFormatFlagIsSignedInteger); }
+ bool isFloat() const final { return isPCM() && (m_streamDescription.mFormatFlags & kAudioFormatFlagIsFloat); }
+ bool isNativeEndian() const final { return isPCM() && (m_streamDescription.mFormatFlags & kAudioFormatFlagIsBigEndian) == kAudioFormatFlagsNativeEndian; }
+
+ uint32_t numberOfInterleavedChannels() const final { return isInterleaved() ? m_streamDescription.mChannelsPerFrame : 1; }
+ uint32_t numberOfChannelStreams() const final { return isInterleaved() ? 1 : m_streamDescription.mChannelsPerFrame; }
+ uint32_t numberOfChannels() const final { return m_streamDescription.mChannelsPerFrame; }
+ uint32_t sampleWordSize() const final {
+ return (m_streamDescription.mBytesPerFrame > 0 && numberOfInterleavedChannels()) ? m_streamDescription.mBytesPerFrame / numberOfInterleavedChannels() : 0;
+ }
+ uint32_t bytesPerFrame() const { return m_streamDescription.mBytesPerFrame; }
+ uint32_t bytesPerPacket() const { return m_streamDescription.mBytesPerPacket; }
+ uint32_t formatFlags() const { return m_streamDescription.mFormatFlags; }
+
+ bool operator==(const AudioStreamBasicDescription& other) { return m_streamDescription == other; }
+ bool operator!=(const AudioStreamBasicDescription& other) { return !operator == (other); }
+ bool operator==(const AudioStreamDescription&);
+ bool operator!=(const AudioStreamDescription& other) { return !operator == (other); }
+
+ const AudioStreamBasicDescription& streamDescription() { return m_streamDescription; }
+
+private:
+ void calculateFormat();
+
+ AudioStreamBasicDescription m_streamDescription;
+ mutable PlatformDescription m_platformDescription;
+ mutable PCMFormat m_format { None };
+};
+
+inline CAAudioStreamDescription toCAAudioStreamDescription(const AudioStreamDescription& description)
+{
+ ASSERT(description.platformDescription().type == PlatformDescription::CAAudioStreamBasicType);
+ return CAAudioStreamDescription(*WTF::get<const AudioStreamBasicDescription*>(description.platformDescription().description));
+}
+
+}
</ins></span></pre>
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