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-rw-r--r--media/libmedia/IMediaMetadataRetriever.cpp78
-rw-r--r--media/libmediaplayerservice/MetadataRetrieverClient.cpp14
-rw-r--r--media/libmediaplayerservice/MetadataRetrieverClient.h10
3 files changed, 75 insertions, 27 deletions
diff --git a/media/libmedia/IMediaMetadataRetriever.cpp b/media/libmedia/IMediaMetadataRetriever.cpp
index 397a55b..68dd880 100644
--- a/media/libmedia/IMediaMetadataRetriever.cpp
+++ b/media/libmedia/IMediaMetadataRetriever.cpp
@@ -21,6 +21,51 @@
#include <SkBitmap.h>
#include <media/IMediaMetadataRetriever.h>
+// The binder is supposed to propagate the scheduler group across
+// the binder interface so that remote calls are executed with
+// the same priority as local calls. This is currently not working
+// so this change puts in a temporary hack to fix the issue with
+// metadata retrieval which can be a huge CPU hit if done on a
+// foreground thread.
+#ifndef DISABLE_GROUP_SCHEDULE_HACK
+
+/* 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
+
+#define LOG_TAG "IMediaMetadataRetriever"
+#include <utils/Log.h>
+#include <cutils/sched_policy.h>
+
+namespace android {
+
+static void sendSchedPolicy(Parcel& data)
+{
+ SchedPolicy policy;
+ get_sched_policy(gettid(), &policy);
+ data.writeInt32(policy);
+}
+
+static void setSchedPolicy(const Parcel& data)
+{
+ SchedPolicy policy = (SchedPolicy) data.readInt32();
+ set_sched_policy(gettid(), policy);
+}
+static void restoreSchedPolicy()
+{
+ set_sched_policy(gettid(), SP_FOREGROUND);
+}
+}; // end namespace android
+#endif
+
namespace android {
enum {
@@ -30,7 +75,7 @@ enum {
SET_MODE,
GET_MODE,
CAPTURE_FRAME,
- EXTARCT_ALBUM_ART,
+ EXTRACT_ALBUM_ART,
EXTRACT_METADATA,
};
@@ -92,6 +137,9 @@ public:
{
Parcel data, reply;
data.writeInterfaceToken(IMediaMetadataRetriever::getInterfaceDescriptor());
+#ifndef DISABLE_GROUP_SCHEDULE_HACK
+ sendSchedPolicy(data);
+#endif
remote()->transact(CAPTURE_FRAME, data, &reply);
status_t ret = reply.readInt32();
if (ret != NO_ERROR) {
@@ -104,7 +152,10 @@ public:
{
Parcel data, reply;
data.writeInterfaceToken(IMediaMetadataRetriever::getInterfaceDescriptor());
- remote()->transact(EXTARCT_ALBUM_ART, data, &reply);
+#ifndef DISABLE_GROUP_SCHEDULE_HACK
+ sendSchedPolicy(data);
+#endif
+ remote()->transact(EXTRACT_ALBUM_ART, data, &reply);
status_t ret = reply.readInt32();
if (ret != NO_ERROR) {
return NULL;
@@ -116,6 +167,9 @@ public:
{
Parcel data, reply;
data.writeInterfaceToken(IMediaMetadataRetriever::getInterfaceDescriptor());
+#ifndef DISABLE_GROUP_SCHEDULE_HACK
+ sendSchedPolicy(data);
+#endif
data.writeInt32(keyCode);
remote()->transact(EXTRACT_METADATA, data, &reply);
status_t ret = reply.readInt32();
@@ -169,6 +223,9 @@ status_t BnMediaMetadataRetriever::onTransact(
} break;
case CAPTURE_FRAME: {
CHECK_INTERFACE(IMediaMetadataRetriever, data, reply);
+#ifndef DISABLE_GROUP_SCHEDULE_HACK
+ setSchedPolicy(data);
+#endif
sp<IMemory> bitmap = captureFrame();
if (bitmap != 0) { // Don't send NULL across the binder interface
reply->writeInt32(NO_ERROR);
@@ -176,10 +233,16 @@ status_t BnMediaMetadataRetriever::onTransact(
} else {
reply->writeInt32(UNKNOWN_ERROR);
}
+#ifndef DISABLE_GROUP_SCHEDULE_HACK
+ restoreSchedPolicy();
+#endif
return NO_ERROR;
} break;
- case EXTARCT_ALBUM_ART: {
+ case EXTRACT_ALBUM_ART: {
CHECK_INTERFACE(IMediaMetadataRetriever, data, reply);
+#ifndef DISABLE_GROUP_SCHEDULE_HACK
+ setSchedPolicy(data);
+#endif
sp<IMemory> albumArt = extractAlbumArt();
if (albumArt != 0) { // Don't send NULL across the binder interface
reply->writeInt32(NO_ERROR);
@@ -187,10 +250,16 @@ status_t BnMediaMetadataRetriever::onTransact(
} else {
reply->writeInt32(UNKNOWN_ERROR);
}
+#ifndef DISABLE_GROUP_SCHEDULE_HACK
+ restoreSchedPolicy();
+#endif
return NO_ERROR;
} break;
case EXTRACT_METADATA: {
CHECK_INTERFACE(IMediaMetadataRetriever, data, reply);
+#ifndef DISABLE_GROUP_SCHEDULE_HACK
+ setSchedPolicy(data);
+#endif
int keyCode = data.readInt32();
const char* value = extractMetadata(keyCode);
if (value != NULL) { // Don't send NULL across the binder interface
@@ -199,6 +268,9 @@ status_t BnMediaMetadataRetriever::onTransact(
} else {
reply->writeInt32(UNKNOWN_ERROR);
}
+#ifndef DISABLE_GROUP_SCHEDULE_HACK
+ restoreSchedPolicy();
+#endif
return NO_ERROR;
} break;
default:
diff --git a/media/libmediaplayerservice/MetadataRetrieverClient.cpp b/media/libmediaplayerservice/MetadataRetrieverClient.cpp
index 2cdc351..d51ce66 100644
--- a/media/libmediaplayerservice/MetadataRetrieverClient.cpp
+++ b/media/libmediaplayerservice/MetadataRetrieverClient.cpp
@@ -237,7 +237,6 @@ sp<IMemory> MetadataRetrieverClient::captureFrame()
{
LOGV("captureFrame");
Mutex::Autolock lock(mLock);
- Priority priority(ANDROID_PRIORITY_BACKGROUND);
mThumbnail.clear();
mThumbnailDealer.clear();
if (mRetriever == NULL) {
@@ -279,7 +278,6 @@ sp<IMemory> MetadataRetrieverClient::extractAlbumArt()
{
LOGV("extractAlbumArt");
Mutex::Autolock lock(mLock);
- Priority priority(ANDROID_PRIORITY_BACKGROUND);
mAlbumArt.clear();
mAlbumArtDealer.clear();
if (mRetriever == NULL) {
@@ -321,19 +319,7 @@ 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
diff --git a/media/libmediaplayerservice/MetadataRetrieverClient.h b/media/libmediaplayerservice/MetadataRetrieverClient.h
index 852d734..8cb8ad1 100644
--- a/media/libmediaplayerservice/MetadataRetrieverClient.h
+++ b/media/libmediaplayerservice/MetadataRetrieverClient.h
@@ -54,16 +54,6 @@ public:
private:
friend class MediaPlayerService;
- class Priority
- {
- public:
- Priority(int newPriority);
- ~Priority();
- private:
- Priority();
- int mOldPriority;
- };
-
explicit MetadataRetrieverClient(pid_t pid);
virtual ~MetadataRetrieverClient();
generated by cgit v1.1 at 2025-01-16 17:41:00 +0000