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Do CFRelease only inside destructors, in AudioUnitEffects.cpp ...

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... may fix a memory leak in AudioUnitEffect::SupportsAutomation
This commit is contained in:
Paul Licameli 2016-08-07 12:04:49 -04:00
parent eb6ba1ed7a
commit 0bb17c174e
1 changed files with 51 additions and 43 deletions
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78
src/effects/audiounits/AudioUnitEffect.cpp
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@ -42,6 +42,22 @@
#include "AudioUnitEffect.h"
struct CFReleaser
{ void operator () (const void *p) const { if (p) CFRelease(p); } };
template <typename T>
using CFunique_ptr = std::unique_ptr<T, CFReleaser>;
struct AudioUnitParameterInfoEx : AudioUnitParameterInfo
{
~AudioUnitParameterInfoEx ()
{
if ((flags & kAudioUnitParameterFlag_HasCFNameString)
&&
(flags & kAudioUnitParameterFlag_CFNameRelease))
CFRelease( cfNameString );
}
};
// ============================================================================
// Module registration entry point
//
@ -228,6 +244,8 @@ void AudioUnitEffectsModule::LoadAudioUnitsOfType(OSType inAUType,
{
CFStringRef cfName;
result = AudioComponentCopyName(component, &cfName);
CFunique_ptr<const __CFString> uName{ cfName };
if (result == noErr)
{
wxString name = wxCFStringRef::AsString(cfName);
@ -237,8 +255,6 @@ void AudioUnitEffectsModule::LoadAudioUnitsOfType(OSType inAUType,
FromOSType(found.componentType).c_str(),
FromOSType(found.componentSubType).c_str(),
name.c_str()));
CFRelease(cfName);
}
}
@ -566,27 +582,26 @@ void AudioUnitEffectExportDialog::OnOk(wxCommandEvent & WXUNUSED(evt))
&size);
// And convert it to XML
CFDataRef xml = CFPropertyListCreateXMLData(kCFAllocatorDefault,
content);
CFunique_ptr<const __CFData> xml {
CFPropertyListCreateXMLData(kCFAllocatorDefault, content)
};
if (xml)
{
// Create the CFURL for the path
CFURLRef url = CFURLCreateWithFileSystemPath(kCFAllocatorDefault,
CFunique_ptr<const __CFURL> url {
CFURLCreateWithFileSystemPath(kCFAllocatorDefault,
wxCFStringRef(path),
kCFURLPOSIXPathStyle,
false);
false)
};
if (url)
{
SInt32 error;
Boolean res = CFURLWriteDataAndPropertiesToResource(url,
xml,
Boolean res = CFURLWriteDataAndPropertiesToResource(url.get(),
xml.get(),
NULL,
&error);
CFRelease(url);
}
// Get rid of the XML data
CFRelease(xml);
}
// And continue to the next selected preset
@ -730,10 +745,13 @@ void AudioUnitEffectImportDialog::OnOk(wxCommandEvent & WXUNUSED(evt))
mList->GetItemText(sel).c_str());
// Create the CFURL for the path
CFURLRef url = CFURLCreateWithFileSystemPath(kCFAllocatorDefault,
CFunique_ptr<const __CFURL> url {
CFURLCreateWithFileSystemPath(kCFAllocatorDefault,
wxCFStringRef(path),
kCFURLPOSIXPathStyle,
false);
false)
};
if (!url)
{
continue;
@ -742,24 +760,24 @@ void AudioUnitEffectImportDialog::OnOk(wxCommandEvent & WXUNUSED(evt))
CFDataRef xml;
SInt32 error;
Boolean res = CFURLCreateDataAndPropertiesFromResource(kCFAllocatorDefault,
url,
url.get(),
&xml,
NULL,
NULL,
&error);
CFRelease(url);
CFunique_ptr<const __CFData> uxml { xml };
if (!res)
{
continue;
}
CFPropertyListRef content;
content = CFPropertyListCreateFromXMLData(kCFAllocatorDefault,
CFunique_ptr<char> content {
(char*)CFPropertyListCreateFromXMLData(kCFAllocatorDefault,
xml,
kCFPropertyListImmutable,
NULL);
CFRelease(xml);
NULL)
};
if (!content)
{
@ -772,7 +790,6 @@ void AudioUnitEffectImportDialog::OnOk(wxCommandEvent & WXUNUSED(evt))
0,
&content,
sizeof(content));
CFRelease(content);
mEffect->SaveUserPreset(mEffect->mHost->GetUserPresetsGroup(mList->GetItemText(sel)));
}
@ -961,7 +978,7 @@ bool AudioUnitEffect::SupportsAutomation()
for (int i = 0; i < cnt; i++)
{
AudioUnitParameterInfo info;
AudioUnitParameterInfoEx info;
dataSize = sizeof(info);
result = AudioUnitGetProperty(mUnit,
kAudioUnitProperty_ParameterInfo,
@ -1501,7 +1518,7 @@ bool AudioUnitEffect::GetAutomationParameters(EffectAutomationParameters & parms
for (int i = 0; i < cnt; i++)
{
AudioUnitParameterInfo info;
AudioUnitParameterInfoEx info;
dataSize = sizeof(info);
result = AudioUnitGetProperty(mUnit,
kAudioUnitProperty_ParameterInfo,
@ -1519,10 +1536,6 @@ bool AudioUnitEffect::GetAutomationParameters(EffectAutomationParameters & parms
if (info.flags & kAudioUnitParameterFlag_HasCFNameString)
{
name = wxCFStringRef::AsString(info.cfNameString);
if (info.flags & kAudioUnitParameterFlag_CFNameRelease)
{
CFRelease(info.cfNameString);
}
}
if (name.IsEmpty())
@ -1583,7 +1596,7 @@ bool AudioUnitEffect::SetAutomationParameters(EffectAutomationParameters & parms
for (int i = 0; i < cnt; i++)
{
AudioUnitParameterInfo info;
AudioUnitParameterInfoEx info;
dataSize = sizeof(info);
result = AudioUnitGetProperty(mUnit,
kAudioUnitProperty_ParameterInfo,
@ -1601,10 +1614,6 @@ bool AudioUnitEffect::SetAutomationParameters(EffectAutomationParameters & parms
if (info.flags & kAudioUnitParameterFlag_HasCFNameString)
{
name = wxCFStringRef::AsString(info.cfNameString);
if (info.flags & kAudioUnitParameterFlag_CFNameRelease)
{
CFRelease(info.cfNameString);
}
}
if (name.IsEmpty())
@ -1669,6 +1678,7 @@ bool AudioUnitEffect::LoadFactoryPreset(int id)
0,
&array,
&dataSize);
CFunique_ptr < const __CFArray > uarray { array };
if (result != noErr)
{
return false;
@ -1697,8 +1707,6 @@ bool AudioUnitEffect::LoadFactoryPreset(int id)
AUParameterListenerNotify(NULL, NULL, &aup);
}
CFRelease(array);
return result == noErr;
}
@ -1721,6 +1729,7 @@ wxArrayString AudioUnitEffect::GetFactoryPresets()
0,
&array,
&dataSize);
CFunique_ptr< const __CFArray > uarray { array };
if (result == noErr)
{
for (CFIndex i = 0, cnt = CFArrayGetCount(array); i < cnt; i++)
@ -1728,7 +1737,6 @@ wxArrayString AudioUnitEffect::GetFactoryPresets()
AUPreset *preset = (AUPreset *) CFArrayGetValueAtIndex(array, i);
presets.Add(wxCFStringRef::AsString(preset->presetName));
}
CFRelease(array);
}
return presets;