Merge "Fix for b/4165024: Serious Memory leak when playing a WV protected streaming video." (306bafcd) · Commits · e / os / android_frameworks_av

media/libstagefright/WVMExtractor.cpp

+23 −13

Original line number	Diff line number	Diff line
		@@ -33,26 +33,25 @@

		#include <utils/Errors.h>

		/* The extractor lifetime is short - just long enough to get
		* the media sources constructed - so the shared lib needs to remain open
		* beyond the lifetime of the extractor. So keep the handle as a global
		* rather than a member of the extractor
		*/
		void *gVendorLibHandle = NULL;

		namespace android {

		static Mutex gWVMutex;
		Mutex WVMExtractor::sMutex;
		uint32_t WVMExtractor::sActiveExtractors = 0;
		void *WVMExtractor::sVendorLibHandle = NULL;

		WVMExtractor::WVMExtractor(const sp<DataSource> &source)
		: mDataSource(source) {
		{
		Mutex::Autolock autoLock(gWVMutex);
		if (gVendorLibHandle == NULL) {
		gVendorLibHandle = dlopen("libwvm.so", RTLD_NOW);
		Mutex::Autolock autoLock(sMutex);

		if (sVendorLibHandle == NULL) {
		CHECK(sActiveExtractors == 0);
		sVendorLibHandle = dlopen("libwvm.so", RTLD_NOW);
		}

		if (gVendorLibHandle == NULL) {
		sActiveExtractors++;

		if (sVendorLibHandle == NULL) {
		LOGE("Failed to open libwvm.so");
		return;
		}
		@@ -60,7 +59,7 @@ WVMExtractor::WVMExtractor(const sp<DataSource> &source)

		typedef WVMLoadableExtractor (GetInstanceFunc)(sp<DataSource>);
		GetInstanceFunc getInstanceFunc =
		(GetInstanceFunc) dlsym(gVendorLibHandle,
		(GetInstanceFunc) dlsym(sVendorLibHandle,
		"_ZN7android11GetInstanceENS_2spINS_10DataSourceEEE");

		if (getInstanceFunc) {
		@@ -72,6 +71,17 @@ WVMExtractor::WVMExtractor(const sp<DataSource> &source)
		}

		WVMExtractor::~WVMExtractor() {
		Mutex::Autolock autoLock(sMutex);

		CHECK(sActiveExtractors > 0);
		sActiveExtractors--;

		// Close lib after last use
		if (sActiveExtractors == 0) {
		if (sVendorLibHandle != NULL)
		dlclose(sVendorLibHandle);
		sVendorLibHandle = NULL;
		}
		}

		size_t WVMExtractor::countTracks() {

media/libstagefright/include/WVMExtractor.h

+5 −0

Original line number	Diff line number	Diff line
		@@ -18,6 +18,7 @@

		#define WVM_EXTRACTOR_H_

		#include <media/stagefright/DataSource.h>
		#include <media/stagefright/MediaExtractor.h>
		#include <utils/Errors.h>

		@@ -67,6 +68,10 @@ private:

		WVMExtractor(const WVMExtractor &);
		WVMExtractor &operator=(const WVMExtractor &);

		static Mutex sMutex;
		static uint32_t sActiveExtractors;
		static void *sVendorLibHandle;
		};

		} // namespace android