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Implement async event callout from drm plugin to Java app

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Change-Id: I83a7757a7b83676ce1a9ffa6ff0a8e495e31b859
This commit is contained in:
Jeff Tinker 2013-04-02 13:16:21 -07:00
parent bcbd78bd24
commit 7eafcae5ff
1 changed files with 39 additions and 3 deletions
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42
include/media/drm/DrmAPI.h
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@ -22,6 +22,7 @@
#include <utils/Vector.h>
#include <utils/KeyedVector.h>
#include <utils/RefBase.h>
#include <utils/Mutex.h>
#include <media/stagefright/foundation/ABase.h>
// Loadable DrmEngine shared libraries should define the entry points
@ -34,7 +35,8 @@
namespace android {
struct DrmPlugin;
class DrmPlugin;
class DrmPluginListener;
// DRMs are implemented in DrmEngine plugins, which are dynamically
// loadable shared libraries that implement the entry points
@ -70,7 +72,7 @@ namespace android {
class DrmPlugin {
public:
enum EventType {
kDrmPluginEventProvisionRequired,
kDrmPluginEventProvisionRequired = 1,
kDrmPluginEventKeyNeeded,
kDrmPluginEventKeyExpired,
kDrmPluginEventVendorDefined
@ -261,12 +263,46 @@ namespace android {
bool &match) = 0;
status_t setListener(const sp<DrmPluginListener>& listener) {
Mutex::Autolock lock(mEventLock);
mListener = listener;
return OK;
}
protected:
// Plugins call sendEvent to deliver events to the java app
void sendEvent(EventType eventType, int extra,
Vector<uint8_t> const *sessionId,
Vector<uint8_t> const *data);
// TODO: provide way to send an event
private:
Mutex mEventLock;
sp<DrmPluginListener> mListener;
DISALLOW_EVIL_CONSTRUCTORS(DrmPlugin);
};
class DrmPluginListener: virtual public RefBase
{
public:
virtual void sendEvent(DrmPlugin::EventType eventType, int extra,
Vector<uint8_t> const *sesionId,
Vector<uint8_t> const *data) = 0;
};
inline void DrmPlugin::sendEvent(EventType eventType, int extra,
Vector<uint8_t> const *sessionId,
Vector<uint8_t> const *data) {
mEventLock.lock();
sp<DrmPluginListener> listener = mListener;
mEventLock.unlock();
if (listener != NULL) {
listener->sendEvent(eventType, extra, sessionId, data);
}
}
} // namespace android
#endif // DRM_API_H_