/* static */ bool
AppleVTLinker::Link()
{
// Bump our reference count every time we're called.
// Add a lock or change the thread assertion if
// you need to call this off the main thread.
MOZ_ASSERT(NS_IsMainThread());
++sRefCount;
if (sLinkStatus) {
return sLinkStatus == LinkStatus_SUCCEEDED;
}
const char* dlnames[] =
{ "/System/Library/Frameworks/VideoToolbox.framework/VideoToolbox",
"/System/Library/PrivateFrameworks/VideoToolbox.framework/VideoToolbox" };
bool dlfound = false;
for (size_t i = 0; i < ArrayLength(dlnames); i++) {
if ((sLink = dlopen(dlnames[i], RTLD_NOW | RTLD_LOCAL))) {
dlfound = true;
break;
}
}
if (!dlfound) {
NS_WARNING("Couldn't load VideoToolbox framework");
goto fail;
}
#define LINK_FUNC(func) \
func = (typeof(func))dlsym(sLink, #func); \
if (!func) { \
NS_WARNING("Couldn't load VideoToolbox function " #func ); \
goto fail; \
}
#include "AppleVTFunctions.h"
#undef LINK_FUNC
// Will only resolve in 10.9 and later.
skPropEnableHWAccel =
GetIOConst("kVTVideoDecoderSpecification_EnableHardwareAcceleratedVideoDecoder");
skPropUsingHWAccel =
GetIOConst("kVTDecompressionPropertyKey_UsingHardwareAcceleratedVideoDecoder");
LOG("Loaded VideoToolbox framework.");
sLinkStatus = LinkStatus_SUCCEEDED;
return true;
fail:
Unlink();
sLinkStatus = LinkStatus_FAILED;
return false;
}
/* static */ bool
AppleCMLinker::Link()
{
// Bump our reference count every time we're called.
// Add a lock or change the thread assertion if
// you need to call this off the main thread.
MOZ_ASSERT(NS_IsMainThread());
++sRefCount;
if (sLinkStatus) {
return sLinkStatus == LinkStatus_SUCCEEDED;
}
const char* dlnames[] =
{ "/System/Library/Frameworks/CoreMedia.framework/CoreMedia",
"/System/Library/PrivateFrameworks/CoreMedia.framework/CoreMedia" };
bool dlfound = false;
for (size_t i = 0; i < ArrayLength(dlnames); i++) {
if ((sLink = dlopen(dlnames[i], RTLD_NOW | RTLD_LOCAL))) {
dlfound = true;
break;
}
}
if (!dlfound) {
NS_WARNING("Couldn't load CoreMedia framework");
goto fail;
}
if (nsCocoaFeatures::OnLionOrLater()) {
#define LINK_FUNC2(func) \
func = (typeof(func))dlsym(sLink, #func); \
if (!func) { \
NS_WARNING("Couldn't load CoreMedia function " #func ); \
goto fail; \
}
#define LINK_FUNC(func) LINK_FUNC2(CM ## func)
#include "AppleCMFunctions.h"
#undef LINK_FUNC
#undef LINK_FUNC2
skPropExtensionAtoms =
GetIOConst("kCMFormatDescriptionExtension_SampleDescriptionExtensionAtoms");
skPropFullRangeVideo =
GetIOConst("kCMFormatDescriptionExtension_FullRangeVideo");
} else {
#define LINK_FUNC2(cm, fig) \
cm = (typeof(cm))dlsym(sLink, #fig); \
if (!cm) { \
NS_WARNING("Couldn't load CoreMedia function " #fig ); \
goto fail; \
}
#define LINK_FUNC(func) LINK_FUNC2(CM ## func, Fig ## func)
#include "AppleCMFunctions.h"
#undef LINK_FUNC
#undef LINK_FUNC2
skPropExtensionAtoms =
GetIOConst("kFigFormatDescriptionExtension_SampleDescriptionExtensionAtoms");
}
if (!skPropExtensionAtoms) {
goto fail;
}
LOG("Loaded CoreMedia framework.");
sLinkStatus = LinkStatus_SUCCEEDED;
return true;
fail:
Unlink();
sLinkStatus = LinkStatus_FAILED;
return false;
}
