1 files changed, 27 insertions, 0 deletions
diff --git a/media/libmediaplayerservice/MetadataRetrieverClient.cpp b/media/libmediaplayerservice/MetadataRetrieverClient.cpp
index ddd4e24..8eabe5d 100644
--- a/media/libmediaplayerservice/MetadataRetrieverClient.cpp
+++ b/media/libmediaplayerservice/MetadataRetrieverClient.cpp
@@ -21,6 +21,7 @@
 
 #include <sys/types.h>
 #include <sys/stat.h>
+#include <sys/resource.h>
 #include <dirent.h>
 #include <unistd.h>
 
@@ -38,6 +39,18 @@
 #include "MidiMetadataRetriever.h"
 #include "MetadataRetrieverClient.h"
 
+/* desktop Linux needs a little help with gettid() */
+#if defined(HAVE_GETTID) && !defined(HAVE_ANDROID_OS)
+#define __KERNEL__
+# include <linux/unistd.h>
+#ifdef _syscall0
+_syscall0(pid_t,gettid)
+#else
+pid_t gettid() { return syscall(__NR_gettid);}
+#endif
+#undef __KERNEL__
+#endif
+
 namespace android {
 
 extern player_type getPlayerType(const char* url);
@@ -212,6 +225,7 @@ sp<IMemory> MetadataRetrieverClient::captureFrame()
 {
     LOGV("captureFrame");
     Mutex::Autolock lock(mLock);
+    Priority priority(ANDROID_PRIORITY_BACKGROUND);
     mThumbnail.clear();
     mThumbnailDealer.clear();
     if (mRetriever == NULL) {
@@ -253,6 +267,7 @@ sp<IMemory> MetadataRetrieverClient::extractAlbumArt()
 {
     LOGV("extractAlbumArt");
     Mutex::Autolock lock(mLock);
+    Priority priority(ANDROID_PRIORITY_BACKGROUND);
     mAlbumArt.clear();
     mAlbumArtDealer.clear();
     if (mRetriever == NULL) {
@@ -294,7 +309,19 @@ const char* MetadataRetrieverClient::extractMetadata(int keyCode)
         LOGE("retriever is not initialized");
         return NULL;
     }
+    Priority priority(ANDROID_PRIORITY_BACKGROUND);
     return mRetriever->extractMetadata(keyCode);
 }
 
+MetadataRetrieverClient::Priority::Priority(int newPriority)
+{
+    mOldPriority = getpriority(PRIO_PROCESS, 0);
+    setpriority(PRIO_PROCESS, 0, newPriority);
+}
+
+MetadataRetrieverClient::Priority::~Priority()
+{
+    setpriority(PRIO_PROCESS, 0, mOldPriority);
+}
+
 }; // namespace android