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-rw-r--r--camera/camera2/ICameraDeviceCallbacks.cpp22
-rw-r--r--camera/camera2/ICameraDeviceUser.cpp25
-rw-r--r--include/camera/camera2/ICameraDeviceCallbacks.h3
-rw-r--r--include/camera/camera2/ICameraDeviceUser.h5
-rw-r--r--include/media/AudioPolicy.h11
-rw-r--r--include/media/AudioSystem.h1
-rw-r--r--include/media/IAudioPolicyServiceClient.h2
-rw-r--r--include/media/stagefright/MediaCodec.h8
-rw-r--r--media/libmedia/AudioPolicy.cpp2
-rw-r--r--media/libmedia/AudioSystem.cpp6
-rw-r--r--media/libmedia/IAudioPolicyServiceClient.cpp19
-rw-r--r--media/libstagefright/MPEG4Extractor.cpp7
-rw-r--r--services/audiopolicy/AudioPolicyInterface.h2
-rw-r--r--services/audiopolicy/common/managerdefinitions/include/AudioOutputDescriptor.h1
-rw-r--r--services/audiopolicy/common/managerdefinitions/src/AudioOutputDescriptor.cpp23
-rw-r--r--services/audiopolicy/service/AudioPolicyClientImpl.cpp6
-rw-r--r--services/audiopolicy/service/AudioPolicyService.cpp55
-rw-r--r--services/audiopolicy/service/AudioPolicyService.h17
-rw-r--r--services/camera/libcameraservice/api1/Camera2Client.cpp34
-rw-r--r--services/camera/libcameraservice/api1/Camera2Client.h2
-rw-r--r--services/camera/libcameraservice/api2/CameraDeviceClient.cpp44
-rw-r--r--services/camera/libcameraservice/api2/CameraDeviceClient.h4
-rw-r--r--services/camera/libcameraservice/common/Camera2ClientBase.cpp8
-rw-r--r--services/camera/libcameraservice/common/Camera2ClientBase.h2
-rw-r--r--services/camera/libcameraservice/common/CameraDeviceBase.h7
-rw-r--r--services/camera/libcameraservice/common/CameraModule.cpp6
-rw-r--r--services/camera/libcameraservice/device2/Camera2Device.cpp6
-rw-r--r--services/camera/libcameraservice/device2/Camera2Device.h3
-rw-r--r--services/camera/libcameraservice/device3/Camera3Device.cpp206
-rw-r--r--services/camera/libcameraservice/device3/Camera3Device.h53
-rw-r--r--services/camera/libcameraservice/device3/Camera3DummyStream.cpp2
-rw-r--r--services/camera/libcameraservice/device3/Camera3DummyStream.h2
-rw-r--r--services/camera/libcameraservice/device3/Camera3IOStreamBase.cpp31
-rw-r--r--services/camera/libcameraservice/device3/Camera3IOStreamBase.h2
-rw-r--r--services/camera/libcameraservice/device3/Camera3InputStream.cpp2
-rw-r--r--services/camera/libcameraservice/device3/Camera3InputStream.h2
-rw-r--r--services/camera/libcameraservice/device3/Camera3OutputStream.cpp9
-rw-r--r--services/camera/libcameraservice/device3/Camera3OutputStream.h2
-rw-r--r--services/camera/libcameraservice/device3/Camera3Stream.cpp132
-rw-r--r--services/camera/libcameraservice/device3/Camera3Stream.h105
-rw-r--r--services/camera/libcameraservice/device3/Camera3StreamInterface.h62
41 files changed, 885 insertions, 56 deletions
diff --git a/camera/camera2/ICameraDeviceCallbacks.cpp b/camera/camera2/ICameraDeviceCallbacks.cpp
index 4cc7b5d..f599879 100644
--- a/camera/camera2/ICameraDeviceCallbacks.cpp
+++ b/camera/camera2/ICameraDeviceCallbacks.cpp
@@ -37,6 +37,7 @@ enum {
CAMERA_IDLE,
CAPTURE_STARTED,
RESULT_RECEIVED,
+ PREPARED
};
class BpCameraDeviceCallbacks: public BpInterface<ICameraDeviceCallbacks>
@@ -80,7 +81,6 @@ public:
data.writeNoException();
}
-
void onResultReceived(const CameraMetadata& metadata,
const CaptureResultExtras& resultExtras) {
ALOGV("onResultReceived");
@@ -93,6 +93,17 @@ public:
remote()->transact(RESULT_RECEIVED, data, &reply, IBinder::FLAG_ONEWAY);
data.writeNoException();
}
+
+ void onPrepared(int streamId)
+ {
+ ALOGV("onPrepared");
+ Parcel data, reply;
+ data.writeInterfaceToken(ICameraDeviceCallbacks::getInterfaceDescriptor());
+ data.writeInt32(streamId);
+ remote()->transact(PREPARED, data, &reply, IBinder::FLAG_ONEWAY);
+ data.writeNoException();
+ }
+
};
IMPLEMENT_META_INTERFACE(CameraDeviceCallbacks,
@@ -160,6 +171,15 @@ status_t BnCameraDeviceCallbacks::onTransact(
data.readExceptionCode();
return NO_ERROR;
} break;
+ case PREPARED: {
+ ALOGV("onPrepared");
+ CHECK_INTERFACE(ICameraDeviceCallbacks, data, reply);
+ CaptureResultExtras result;
+ int streamId = data.readInt32();
+ onPrepared(streamId);
+ data.readExceptionCode();
+ return NO_ERROR;
+ } break;
default:
return BBinder::onTransact(code, data, reply, flags);
}
diff --git a/camera/camera2/ICameraDeviceUser.cpp b/camera/camera2/ICameraDeviceUser.cpp
index 2ec08a9..9700258 100644
--- a/camera/camera2/ICameraDeviceUser.cpp
+++ b/camera/camera2/ICameraDeviceUser.cpp
@@ -47,7 +47,8 @@ enum {
CREATE_DEFAULT_REQUEST,
GET_CAMERA_INFO,
WAIT_UNTIL_IDLE,
- FLUSH
+ FLUSH,
+ PREPARE
};
namespace {
@@ -348,6 +349,20 @@ public:
return res;
}
+ virtual status_t prepare(int streamId)
+ {
+ ALOGV("prepare");
+ Parcel data, reply;
+
+ data.writeInterfaceToken(ICameraDeviceUser::getInterfaceDescriptor());
+ data.writeInt32(streamId);
+
+ remote()->transact(PREPARE, data, &reply);
+
+ reply.readExceptionCode();
+ return reply.readInt32();
+ }
+
private:
@@ -545,6 +560,14 @@ status_t BnCameraDeviceUser::onTransact(
reply->writeInt32(endConfigure());
return NO_ERROR;
} break;
+ case PREPARE: {
+ CHECK_INTERFACE(ICameraDeviceUser, data, reply);
+ int streamId = data.readInt32();
+ reply->writeNoException();
+ reply->writeInt32(prepare(streamId));
+ return NO_ERROR;
+ } break;
+
default:
return BBinder::onTransact(code, data, reply, flags);
}
diff --git a/include/camera/camera2/ICameraDeviceCallbacks.h b/include/camera/camera2/ICameraDeviceCallbacks.h
index 670480b..c57b39f 100644
--- a/include/camera/camera2/ICameraDeviceCallbacks.h
+++ b/include/camera/camera2/ICameraDeviceCallbacks.h
@@ -65,6 +65,9 @@ public:
// One way
virtual void onResultReceived(const CameraMetadata& metadata,
const CaptureResultExtras& resultExtras) = 0;
+
+ // One way
+ virtual void onPrepared(int streamId) = 0;
};
// ----------------------------------------------------------------------------
diff --git a/include/camera/camera2/ICameraDeviceUser.h b/include/camera/camera2/ICameraDeviceUser.h
index c850924..619b161 100644
--- a/include/camera/camera2/ICameraDeviceUser.h
+++ b/include/camera/camera2/ICameraDeviceUser.h
@@ -133,6 +133,11 @@ public:
*/
virtual status_t flush(/*out*/
int64_t* lastFrameNumber = NULL) = 0;
+
+ /**
+ * Preallocate buffers for a given output stream asynchronously.
+ */
+ virtual status_t prepare(int streamId) = 0;
};
// ----------------------------------------------------------------------------
diff --git a/include/media/AudioPolicy.h b/include/media/AudioPolicy.h
index a755e1e..800b27b 100644
--- a/include/media/AudioPolicy.h
+++ b/include/media/AudioPolicy.h
@@ -38,9 +38,15 @@ namespace android {
#define MIX_TYPE_PLAYERS 0
#define MIX_TYPE_RECORDERS 1
+#define MIX_STATE_DISABLED -1
+#define MIX_STATE_IDLE 0
+#define MIX_STATE_MIXING 1
+
#define ROUTE_FLAG_RENDER 0x1
#define ROUTE_FLAG_LOOP_BACK (0x1 << 1)
+#define MIX_FLAG_NOTIFY_ACTIVITY 0x1
+
#define MAX_MIXES_PER_POLICY 10
#define MAX_CRITERIA_PER_MIX 20
@@ -63,9 +69,9 @@ class AudioMix {
public:
AudioMix() {}
AudioMix(Vector<AttributeMatchCriterion> criteria, uint32_t mixType, audio_config_t format,
- uint32_t routeFlags, String8 registrationId) :
+ uint32_t routeFlags, String8 registrationId, uint32_t flags) :
mCriteria(criteria), mMixType(mixType), mFormat(format),
- mRouteFlags(routeFlags), mRegistrationId(registrationId) {}
+ mRouteFlags(routeFlags), mRegistrationId(registrationId), mFlags(flags){}
status_t readFromParcel(Parcel *parcel);
status_t writeToParcel(Parcel *parcel) const;
@@ -75,6 +81,7 @@ public:
audio_config_t mFormat;
uint32_t mRouteFlags;
String8 mRegistrationId;
+ uint32_t mFlags;
};
}; // namespace android
diff --git a/include/media/AudioSystem.h b/include/media/AudioSystem.h
index 3b6db8c..927283c 100644
--- a/include/media/AudioSystem.h
+++ b/include/media/AudioSystem.h
@@ -384,6 +384,7 @@ private:
// IAudioPolicyServiceClient
virtual void onAudioPortListUpdate();
virtual void onAudioPatchListUpdate();
+ virtual void onDynamicPolicyMixStateUpdate(String8 regId, int32_t state);
private:
Mutex mLock;
diff --git a/include/media/IAudioPolicyServiceClient.h b/include/media/IAudioPolicyServiceClient.h
index 59df046..a7f2cc3 100644
--- a/include/media/IAudioPolicyServiceClient.h
+++ b/include/media/IAudioPolicyServiceClient.h
@@ -35,6 +35,8 @@ public:
virtual void onAudioPortListUpdate() = 0;
// Notifies a change of audio patch configuration.
virtual void onAudioPatchListUpdate() = 0;
+ // Notifies a change in the mixing state of a specific mix in a dynamic audio policy
+ virtual void onDynamicPolicyMixStateUpdate(String8 regId, int32_t state) = 0;
};
diff --git a/include/media/stagefright/MediaCodec.h b/include/media/stagefright/MediaCodec.h
index 012a8f4..d98fa1a 100644
--- a/include/media/stagefright/MediaCodec.h
+++ b/include/media/stagefright/MediaCodec.h
@@ -56,13 +56,7 @@ struct MediaCodec : public AHandler {
CB_OUTPUT_AVAILABLE = 2,
CB_ERROR = 3,
CB_OUTPUT_FORMAT_CHANGED = 4,
- CB_CODEC_RELEASED = 5,
- };
-
- // used by CB_CODEC_RELEASED to tell the upper layer the cause of the release.
- enum ReleaseReason {
- REASON_UNKNOWN = 0,
- REASON_RECLAIMED, // resources reclaimed by resource manager
+ CB_RESOURCE_RECLAIMED = 5,
};
struct BatteryNotifier;
diff --git a/media/libmedia/AudioPolicy.cpp b/media/libmedia/AudioPolicy.cpp
index c7dafcb..786eb63 100644
--- a/media/libmedia/AudioPolicy.cpp
+++ b/media/libmedia/AudioPolicy.cpp
@@ -68,6 +68,7 @@ status_t AudioMix::readFromParcel(Parcel *parcel)
mFormat.format = (audio_format_t)parcel->readInt32();
mRouteFlags = parcel->readInt32();
mRegistrationId = parcel->readString8();
+ mFlags = (uint32_t)parcel->readInt32();
size_t size = (size_t)parcel->readInt32();
if (size > MAX_CRITERIA_PER_MIX) {
size = MAX_CRITERIA_PER_MIX;
@@ -89,6 +90,7 @@ status_t AudioMix::writeToParcel(Parcel *parcel) const
parcel->writeInt32(mFormat.format);
parcel->writeInt32(mRouteFlags);
parcel->writeString8(mRegistrationId);
+ parcel->writeInt32(mFlags);
size_t size = mCriteria.size();
if (size > MAX_CRITERIA_PER_MIX) {
size = MAX_CRITERIA_PER_MIX;
diff --git a/media/libmedia/AudioSystem.cpp b/media/libmedia/AudioSystem.cpp
index 8db72ee..d1aeba1 100644
--- a/media/libmedia/AudioSystem.cpp
+++ b/media/libmedia/AudioSystem.cpp
@@ -1033,6 +1033,12 @@ void AudioSystem::AudioPolicyServiceClient::onAudioPatchListUpdate()
}
}
+void AudioSystem::AudioPolicyServiceClient::onDynamicPolicyMixStateUpdate(
+ String8 regId, int32_t state)
+{
+ ALOGV("TODO propagate onDynamicPolicyMixStateUpdate(%s, %d)", regId.string(), state);
+}
+
void AudioSystem::AudioPolicyServiceClient::binderDied(const wp<IBinder>& who __unused)
{
{
diff --git a/media/libmedia/IAudioPolicyServiceClient.cpp b/media/libmedia/IAudioPolicyServiceClient.cpp
index 7c65878..65cc7d6 100644
--- a/media/libmedia/IAudioPolicyServiceClient.cpp
+++ b/media/libmedia/IAudioPolicyServiceClient.cpp
@@ -29,7 +29,8 @@ namespace android {
enum {
PORT_LIST_UPDATE = IBinder::FIRST_CALL_TRANSACTION,
- PATCH_LIST_UPDATE
+ PATCH_LIST_UPDATE,
+ MIX_STATE_UPDATE
};
class BpAudioPolicyServiceClient : public BpInterface<IAudioPolicyServiceClient>
@@ -53,6 +54,15 @@ public:
data.writeInterfaceToken(IAudioPolicyServiceClient::getInterfaceDescriptor());
remote()->transact(PATCH_LIST_UPDATE, data, &reply, IBinder::FLAG_ONEWAY);
}
+
+ void onDynamicPolicyMixStateUpdate(String8 regId, int32_t state)
+ {
+ Parcel data, reply;
+ data.writeInterfaceToken(IAudioPolicyServiceClient::getInterfaceDescriptor());
+ data.writeString8(regId);
+ data.writeInt32(state);
+ remote()->transact(MIX_STATE_UPDATE, data, &reply, IBinder::FLAG_ONEWAY);
+ }
};
IMPLEMENT_META_INTERFACE(AudioPolicyServiceClient, "android.media.IAudioPolicyServiceClient");
@@ -73,6 +83,13 @@ status_t BnAudioPolicyServiceClient::onTransact(
onAudioPatchListUpdate();
return NO_ERROR;
} break;
+ case MIX_STATE_UPDATE: {
+ CHECK_INTERFACE(IAudioPolicyServiceClient, data, reply);
+ String8 regId = data.readString8();
+ int32_t state = data.readInt32();
+ onDynamicPolicyMixStateUpdate(regId, state);
+ return NO_ERROR;
+ }
default:
return BBinder::onTransact(code, data, reply, flags);
}
diff --git a/media/libstagefright/MPEG4Extractor.cpp b/media/libstagefright/MPEG4Extractor.cpp
index 297a186..28a9ed9 100644
--- a/media/libstagefright/MPEG4Extractor.cpp
+++ b/media/libstagefright/MPEG4Extractor.cpp
@@ -745,7 +745,8 @@ static bool underQTMetaPath(const Vector<uint32_t> &path, int32_t depth) {
&& path[1] == FOURCC('m', 'e', 't', 'a')
&& (depth == 2
|| (depth == 3
- && (path[2] == FOURCC('i', 'l', 's', 't')
+ && (path[2] == FOURCC('h', 'd', 'l', 'r')
+ || path[2] == FOURCC('i', 'l', 's', 't')
|| path[2] == FOURCC('k', 'e', 'y', 's'))));
}
@@ -1914,6 +1915,10 @@ status_t MPEG4Extractor::parseChunk(off64_t *offset, int depth) {
{
*offset += chunk_size;
+ if (underQTMetaPath(mPath, 3)) {
+ break;
+ }
+
uint32_t buffer;
if (mDataSource->readAt(
data_offset + 8, &buffer, 4) < 4) {
diff --git a/services/audiopolicy/AudioPolicyInterface.h b/services/audiopolicy/AudioPolicyInterface.h
index 48d0e29..4fa472e 100644
--- a/services/audiopolicy/AudioPolicyInterface.h
+++ b/services/audiopolicy/AudioPolicyInterface.h
@@ -320,6 +320,8 @@ public:
virtual void onAudioPatchListUpdate() = 0;
virtual audio_unique_id_t newAudioUniqueId() = 0;
+
+ virtual void onDynamicPolicyMixStateUpdate(String8 regId, int32_t state) = 0;
};
extern "C" AudioPolicyInterface* createAudioPolicyManager(AudioPolicyClientInterface *clientInterface);
diff --git a/services/audiopolicy/common/managerdefinitions/include/AudioOutputDescriptor.h b/services/audiopolicy/common/managerdefinitions/include/AudioOutputDescriptor.h
index f1aee46..50f622d 100644
--- a/services/audiopolicy/common/managerdefinitions/include/AudioOutputDescriptor.h
+++ b/services/audiopolicy/common/managerdefinitions/include/AudioOutputDescriptor.h
@@ -123,6 +123,7 @@ public:
sp<SwAudioOutputDescriptor> mOutput1; // used by duplicated outputs: first output
sp<SwAudioOutputDescriptor> mOutput2; // used by duplicated outputs: second output
uint32_t mDirectOpenCount; // number of clients using this output (direct outputs only)
+ uint32_t mGlobalRefCount; // non-stream-specific ref count
};
class SwAudioOutputCollection :
diff --git a/services/audiopolicy/common/managerdefinitions/src/AudioOutputDescriptor.cpp b/services/audiopolicy/common/managerdefinitions/src/AudioOutputDescriptor.cpp
index 596aa1d..144d8ad 100644
--- a/services/audiopolicy/common/managerdefinitions/src/AudioOutputDescriptor.cpp
+++ b/services/audiopolicy/common/managerdefinitions/src/AudioOutputDescriptor.cpp
@@ -225,7 +225,7 @@ SwAudioOutputDescriptor::SwAudioOutputDescriptor(
: AudioOutputDescriptor(profile, clientInterface),
mProfile(profile), mIoHandle(0), mLatency(0),
mFlags((audio_output_flags_t)0), mPolicyMix(NULL),
- mOutput1(0), mOutput2(0), mDirectOpenCount(0)
+ mOutput1(0), mOutput2(0), mDirectOpenCount(0), mGlobalRefCount(0)
{
if (profile != NULL) {
mFlags = (audio_output_flags_t)profile->mFlags;
@@ -305,6 +305,27 @@ void SwAudioOutputDescriptor::changeRefCount(audio_stream_type_t stream,
mOutput2->changeRefCount(stream, delta);
}
AudioOutputDescriptor::changeRefCount(stream, delta);
+
+ // handle stream-independent ref count
+ uint32_t oldGlobalRefCount = mGlobalRefCount;
+ if ((delta + (int)mGlobalRefCount) < 0) {
+ ALOGW("changeRefCount() invalid delta %d globalRefCount %d", delta, mGlobalRefCount);
+ mGlobalRefCount = 0;
+ } else {
+ mGlobalRefCount += delta;
+ }
+ if ((oldGlobalRefCount == 0) && (mGlobalRefCount > 0)) {
+ if ((mPolicyMix != NULL) && ((mPolicyMix->mFlags & MIX_FLAG_NOTIFY_ACTIVITY) != 0)) {
+ mClientInterface->onDynamicPolicyMixStateUpdate(mPolicyMix->mRegistrationId,
+ MIX_STATE_MIXING);
+ }
+
+ } else if ((oldGlobalRefCount > 0) && (mGlobalRefCount == 0)) {
+ if ((mPolicyMix != NULL) && ((mPolicyMix->mFlags & MIX_FLAG_NOTIFY_ACTIVITY) != 0)) {
+ mClientInterface->onDynamicPolicyMixStateUpdate(mPolicyMix->mRegistrationId,
+ MIX_STATE_IDLE);
+ }
+ }
}
diff --git a/services/audiopolicy/service/AudioPolicyClientImpl.cpp b/services/audiopolicy/service/AudioPolicyClientImpl.cpp
index 3e090e9..489a9be 100644
--- a/services/audiopolicy/service/AudioPolicyClientImpl.cpp
+++ b/services/audiopolicy/service/AudioPolicyClientImpl.cpp
@@ -213,6 +213,12 @@ void AudioPolicyService::AudioPolicyClient::onAudioPatchListUpdate()
mAudioPolicyService->onAudioPatchListUpdate();
}
+void AudioPolicyService::AudioPolicyClient::onDynamicPolicyMixStateUpdate(
+ String8 regId, int32_t state)
+{
+ mAudioPolicyService->onDynamicPolicyMixStateUpdate(regId, state);
+}
+
audio_unique_id_t AudioPolicyService::AudioPolicyClient::newAudioUniqueId()
{
return AudioSystem::newAudioUniqueId();
diff --git a/services/audiopolicy/service/AudioPolicyService.cpp b/services/audiopolicy/service/AudioPolicyService.cpp
index 00f188f..ccf9f9b 100644
--- a/services/audiopolicy/service/AudioPolicyService.cpp
+++ b/services/audiopolicy/service/AudioPolicyService.cpp
@@ -222,6 +222,21 @@ void AudioPolicyService::doOnAudioPatchListUpdate()
}
}
+void AudioPolicyService::onDynamicPolicyMixStateUpdate(String8 regId, int32_t state)
+{
+ ALOGV("AudioPolicyService::onDynamicPolicyMixStateUpdate(%s, %d)",
+ regId.string(), state);
+ mOutputCommandThread->dynamicPolicyMixStateUpdateCommand(regId, state);
+}
+
+void AudioPolicyService::doOnDynamicPolicyMixStateUpdate(String8 regId, int32_t state)
+{
+ Mutex::Autolock _l(mNotificationClientsLock);
+ for (size_t i = 0; i < mNotificationClients.size(); i++) {
+ mNotificationClients.valueAt(i)->onDynamicPolicyMixStateUpdate(regId, state);
+ }
+}
+
status_t AudioPolicyService::clientSetAudioPortConfig(const struct audio_port_config *config,
int delayMs)
{
@@ -262,6 +277,14 @@ void AudioPolicyService::NotificationClient::onAudioPatchListUpdate()
}
}
+void AudioPolicyService::NotificationClient::onDynamicPolicyMixStateUpdate(
+ String8 regId, int32_t state)
+{
+ if (mAudioPolicyServiceClient != 0) {
+ mAudioPolicyServiceClient->onDynamicPolicyMixStateUpdate(regId, state);
+ }
+}
+
void AudioPolicyService::binderDied(const wp<IBinder>& who) {
ALOGW("binderDied() %p, calling pid %d", who.unsafe_get(),
IPCThreadState::self()->getCallingPid());
@@ -511,6 +534,20 @@ bool AudioPolicyService::AudioCommandThread::threadLoop()
command->mStatus = af->setAudioPortConfig(&data->mConfig);
}
} break;
+ case DYN_POLICY_MIX_STATE_UPDATE: {
+ DynPolicyMixStateUpdateData *data =
+ (DynPolicyMixStateUpdateData *)command->mParam.get();
+ //###ALOGV("AudioCommandThread() processing dyn policy mix state update");
+ ALOGV("AudioCommandThread() processing dyn policy mix state update %s %d",
+ data->mRegId.string(), data->mState);
+ svc = mService.promote();
+ if (svc == 0) {
+ break;
+ }
+ mLock.unlock();
+ svc->doOnDynamicPolicyMixStateUpdate(data->mRegId, data->mState);
+ mLock.lock();
+ } break;
default:
ALOGW("AudioCommandThread() unknown command %d", command->mCommand);
}
@@ -747,6 +784,20 @@ status_t AudioPolicyService::AudioCommandThread::setAudioPortConfigCommand(
return sendCommand(command, delayMs);
}
+void AudioPolicyService::AudioCommandThread::dynamicPolicyMixStateUpdateCommand(
+ String8 regId, int32_t state)
+{
+ sp<AudioCommand> command = new AudioCommand();
+ command->mCommand = DYN_POLICY_MIX_STATE_UPDATE;
+ DynPolicyMixStateUpdateData *data = new DynPolicyMixStateUpdateData();
+ data->mRegId = regId;
+ data->mState = state;
+ command->mParam = data;
+ ALOGV("AudioCommandThread() sending dynamic policy mix (id=%s) state update to %d",
+ regId.string(), state);
+ sendCommand(command);
+}
+
status_t AudioPolicyService::AudioCommandThread::sendCommand(sp<AudioCommand>& command, int delayMs)
{
{
@@ -888,6 +939,10 @@ void AudioPolicyService::AudioCommandThread::insertCommand_l(sp<AudioCommand>& c
delayMs = 1;
} break;
+ case DYN_POLICY_MIX_STATE_UPDATE: {
+
+ } break;
+
case START_TONE:
case STOP_TONE:
default:
diff --git a/services/audiopolicy/service/AudioPolicyService.h b/services/audiopolicy/service/AudioPolicyService.h
index f8dabd3..fbd8f0e 100644
--- a/services/audiopolicy/service/AudioPolicyService.h
+++ b/services/audiopolicy/service/AudioPolicyService.h
@@ -213,6 +213,9 @@ public:
void onAudioPatchListUpdate();
void doOnAudioPatchListUpdate();
+ void onDynamicPolicyMixStateUpdate(String8 regId, int32_t state);
+ void doOnDynamicPolicyMixStateUpdate(String8 regId, int32_t state);
+
private:
AudioPolicyService() ANDROID_API;
virtual ~AudioPolicyService();
@@ -243,6 +246,7 @@ private:
UPDATE_AUDIOPORT_LIST,
UPDATE_AUDIOPATCH_LIST,
SET_AUDIOPORT_CONFIG,
+ DYN_POLICY_MIX_STATE_UPDATE
};
AudioCommandThread (String8 name, const wp<AudioPolicyService>& service);
@@ -280,6 +284,7 @@ private:
void updateAudioPatchListCommand();
status_t setAudioPortConfigCommand(const struct audio_port_config *config,
int delayMs);
+ void dynamicPolicyMixStateUpdateCommand(String8 regId, int32_t state);
void insertCommand_l(AudioCommand *command, int delayMs = 0);
private:
@@ -364,6 +369,12 @@ private:
struct audio_port_config mConfig;
};
+ class DynPolicyMixStateUpdateData : public AudioCommandData {
+ public:
+ String8 mRegId;
+ int32_t mState;
+ };
+
Mutex mLock;
Condition mWaitWorkCV;
Vector < sp<AudioCommand> > mAudioCommands; // list of pending commands
@@ -469,6 +480,7 @@ private:
virtual void onAudioPortListUpdate();
virtual void onAudioPatchListUpdate();
+ virtual void onDynamicPolicyMixStateUpdate(String8 regId, int32_t state);
virtual audio_unique_id_t newAudioUniqueId();
@@ -484,8 +496,9 @@ private:
uid_t uid);
virtual ~NotificationClient();
- void onAudioPortListUpdate();
- void onAudioPatchListUpdate();
+ void onAudioPortListUpdate();
+ void onAudioPatchListUpdate();
+ void onDynamicPolicyMixStateUpdate(String8 regId, int32_t state);
// IBinder::DeathRecipient
virtual void binderDied(const wp<IBinder>& who);
diff --git a/services/camera/libcameraservice/api1/Camera2Client.cpp b/services/camera/libcameraservice/api1/Camera2Client.cpp
index f53f425..05ede92 100644
--- a/services/camera/libcameraservice/api1/Camera2Client.cpp
+++ b/services/camera/libcameraservice/api1/Camera2Client.cpp
@@ -1710,6 +1710,40 @@ status_t Camera2Client::commandSetVideoBufferCountL(size_t count) {
return mStreamingProcessor->setRecordingBufferCount(count);
}
+void Camera2Client::notifyError(ICameraDeviceCallbacks::CameraErrorCode errorCode,
+ const CaptureResultExtras& resultExtras) {
+ int32_t err = CAMERA_ERROR_UNKNOWN;
+ switch(errorCode) {
+ case ICameraDeviceCallbacks::ERROR_CAMERA_DISCONNECTED:
+ err = CAMERA_ERROR_RELEASED;
+ break;
+ case ICameraDeviceCallbacks::ERROR_CAMERA_DEVICE:
+ err = CAMERA_ERROR_UNKNOWN;
+ break;
+ case ICameraDeviceCallbacks::ERROR_CAMERA_SERVICE:
+ err = CAMERA_ERROR_SERVER_DIED;
+ break;
+ case ICameraDeviceCallbacks::ERROR_CAMERA_REQUEST:
+ case ICameraDeviceCallbacks::ERROR_CAMERA_RESULT:
+ case ICameraDeviceCallbacks::ERROR_CAMERA_BUFFER:
+ ALOGW("%s: Received recoverable error %d from HAL - ignoring, requestId %" PRId32,
+ __FUNCTION__, errorCode, resultExtras.requestId);
+ return;
+ default:
+ err = CAMERA_ERROR_UNKNOWN;
+ break;
+ }
+
+ ALOGE("%s: Error condition %d reported by HAL, requestId %" PRId32, __FUNCTION__, errorCode,
+ resultExtras.requestId);
+
+ SharedCameraCallbacks::Lock l(mSharedCameraCallbacks);
+ if (l.mRemoteCallback != nullptr) {
+ l.mRemoteCallback->notifyCallback(CAMERA_MSG_ERROR, err, 0);
+ }
+}
+
+
/** Device-related methods */
void Camera2Client::notifyAutoFocus(uint8_t newState, int triggerId) {
ALOGV("%s: Autofocus state now %d, last trigger %d",
diff --git a/services/camera/libcameraservice/api1/Camera2Client.h b/services/camera/libcameraservice/api1/Camera2Client.h
index 5a8241f..a988037 100644
--- a/services/camera/libcameraservice/api1/Camera2Client.h
+++ b/services/camera/libcameraservice/api1/Camera2Client.h
@@ -77,6 +77,8 @@ public:
virtual status_t setParameters(const String8& params);
virtual String8 getParameters() const;
virtual status_t sendCommand(int32_t cmd, int32_t arg1, int32_t arg2);
+ virtual void notifyError(ICameraDeviceCallbacks::CameraErrorCode errorCode,
+ const CaptureResultExtras& resultExtras);
/**
* Interface used by CameraService
diff --git a/services/camera/libcameraservice/api2/CameraDeviceClient.cpp b/services/camera/libcameraservice/api2/CameraDeviceClient.cpp
index 0016174..bf1692d 100644
--- a/services/camera/libcameraservice/api2/CameraDeviceClient.cpp
+++ b/services/camera/libcameraservice/api2/CameraDeviceClient.cpp
@@ -671,6 +671,42 @@ status_t CameraDeviceClient::flush(int64_t* lastFrameNumber) {
return mDevice->flush(lastFrameNumber);
}
+status_t CameraDeviceClient::prepare(int streamId) {
+ ATRACE_CALL();
+ ALOGV("%s", __FUNCTION__);
+
+ status_t res = OK;
+ if ( (res = checkPid(__FUNCTION__) ) != OK) return res;
+
+ Mutex::Autolock icl(mBinderSerializationLock);
+
+ // Guard against trying to prepare non-created streams
+ ssize_t index = NAME_NOT_FOUND;
+ for (size_t i = 0; i < mStreamMap.size(); ++i) {
+ if (streamId == mStreamMap.valueAt(i)) {
+ index = i;
+ break;
+ }
+ }
+
+ if (index == NAME_NOT_FOUND) {
+ ALOGW("%s: Camera %d: Invalid stream ID (%d) specified, no stream "
+ "created yet", __FUNCTION__, mCameraId, streamId);
+ return BAD_VALUE;
+ }
+
+ // Also returns BAD_VALUE if stream ID was not valid
+ res = mDevice->prepare(streamId);
+
+ if (res == BAD_VALUE) {
+ ALOGE("%s: Camera %d: Unexpected BAD_VALUE when preparing stream, but we"
+ " already checked and the stream ID (%d) should be valid.",
+ __FUNCTION__, mCameraId, streamId);
+ }
+
+ return res;
+}
+
status_t CameraDeviceClient::dump(int fd, const Vector<String16>& args) {
String8 result;
result.appendFormat("CameraDeviceClient[%d] (%p) dump:\n",
@@ -730,6 +766,14 @@ void CameraDeviceClient::notifyShutter(const CaptureResultExtras& resultExtras,
}
}
+void CameraDeviceClient::notifyPrepared(int streamId) {
+ // Thread safe. Don't bother locking.
+ sp<ICameraDeviceCallbacks> remoteCb = getRemoteCallback();
+ if (remoteCb != 0) {
+ remoteCb->onPrepared(streamId);
+ }
+}
+
void CameraDeviceClient::detachDevice() {
if (mDevice == 0) return;
diff --git a/services/camera/libcameraservice/api2/CameraDeviceClient.h b/services/camera/libcameraservice/api2/CameraDeviceClient.h
index f2d8899..b8d8bea 100644
--- a/services/camera/libcameraservice/api2/CameraDeviceClient.h
+++ b/services/camera/libcameraservice/api2/CameraDeviceClient.h
@@ -109,6 +109,9 @@ public:
virtual status_t flush(/*out*/
int64_t* lastFrameNumber = NULL);
+ // Prepare stream by preallocating its buffers
+ virtual status_t prepare(int streamId);
+
/**
* Interface used by CameraService
*/
@@ -135,6 +138,7 @@ public:
virtual void notifyError(ICameraDeviceCallbacks::CameraErrorCode errorCode,
const CaptureResultExtras& resultExtras);
virtual void notifyShutter(const CaptureResultExtras& resultExtras, nsecs_t timestamp);
+ virtual void notifyPrepared(int streamId);
/**
* Interface used by independent components of CameraDeviceClient.
diff --git a/services/camera/libcameraservice/common/Camera2ClientBase.cpp b/services/camera/libcameraservice/common/Camera2ClientBase.cpp
index c0c2314..ba0b264 100644
--- a/services/camera/libcameraservice/common/Camera2ClientBase.cpp
+++ b/services/camera/libcameraservice/common/Camera2ClientBase.cpp
@@ -280,6 +280,14 @@ void Camera2ClientBase<TClientBase>::notifyAutoWhitebalance(uint8_t newState,
}
template <typename TClientBase>
+void Camera2ClientBase<TClientBase>::notifyPrepared(int streamId) {
+ (void)streamId;
+
+ ALOGV("%s: Stream %d now prepared",
+ __FUNCTION__, streamId);
+}
+
+template <typename TClientBase>
int Camera2ClientBase<TClientBase>::getCameraId() const {
return TClientBase::mCameraId;
}
diff --git a/services/camera/libcameraservice/common/Camera2ClientBase.h b/services/camera/libcameraservice/common/Camera2ClientBase.h
index 168ea0a..f1cacdf 100644
--- a/services/camera/libcameraservice/common/Camera2ClientBase.h
+++ b/services/camera/libcameraservice/common/Camera2ClientBase.h
@@ -72,7 +72,7 @@ public:
virtual void notifyAutoExposure(uint8_t newState, int triggerId);
virtual void notifyAutoWhitebalance(uint8_t newState,
int triggerId);
-
+ virtual void notifyPrepared(int streamId);
int getCameraId() const;
const sp<CameraDeviceBase>&
diff --git a/services/camera/libcameraservice/common/CameraDeviceBase.h b/services/camera/libcameraservice/common/CameraDeviceBase.h
index 6ece359..f02fc32 100644
--- a/services/camera/libcameraservice/common/CameraDeviceBase.h
+++ b/services/camera/libcameraservice/common/CameraDeviceBase.h
@@ -199,6 +199,7 @@ class CameraDeviceBase : public virtual RefBase {
virtual void notifyIdle() = 0;
virtual void notifyShutter(const CaptureResultExtras &resultExtras,
nsecs_t timestamp) = 0;
+ virtual void notifyPrepared(int streamId) = 0;
// Required only for API1
virtual void notifyAutoFocus(uint8_t newState, int triggerId) = 0;
@@ -281,6 +282,12 @@ class CameraDeviceBase : public virtual RefBase {
virtual status_t flush(int64_t *lastFrameNumber = NULL) = 0;
/**
+ * Prepare stream by preallocating buffers for it asynchronously.
+ * Calls notifyPrepared() once allocation is complete.
+ */
+ virtual status_t prepare(int streamId) = 0;
+
+ /**
* Get the HAL device version.
*/
virtual uint32_t getDeviceVersion() = 0;
diff --git a/services/camera/libcameraservice/common/CameraModule.cpp b/services/camera/libcameraservice/common/CameraModule.cpp
index e5b12ae..b861d71 100644
--- a/services/camera/libcameraservice/common/CameraModule.cpp
+++ b/services/camera/libcameraservice/common/CameraModule.cpp
@@ -78,6 +78,12 @@ int CameraModule::getCameraInfo(int cameraId, struct camera_info *info) {
if (ret != 0) {
return ret;
}
+ int deviceVersion = cameraInfo.device_version;
+ if (deviceVersion < CAMERA_DEVICE_API_VERSION_2_0) {
+ // static_camera_characteristics is invalid
+ *info = rawInfo;
+ return ret;
+ }
CameraMetadata m;
m = rawInfo.static_camera_characteristics;
deriveCameraCharacteristicsKeys(rawInfo.device_version, m);
diff --git a/services/camera/libcameraservice/device2/Camera2Device.cpp b/services/camera/libcameraservice/device2/Camera2Device.cpp
index 3c5ea9d..f6645f3 100644
--- a/services/camera/libcameraservice/device2/Camera2Device.cpp
+++ b/services/camera/libcameraservice/device2/Camera2Device.cpp
@@ -618,6 +618,12 @@ status_t Camera2Device::flush(int64_t* /*lastFrameNumber*/) {
return waitUntilDrained();
}
+status_t Camera2Device::prepare(int streamId) {
+ ATRACE_CALL();
+ ALOGE("%s: Camera %d: unimplemented", __FUNCTION__, mId);
+ return NO_INIT;
+}
+
uint32_t Camera2Device::getDeviceVersion() {
ATRACE_CALL();
return mDeviceVersion;
diff --git a/services/camera/libcameraservice/device2/Camera2Device.h b/services/camera/libcameraservice/device2/Camera2Device.h
index 9972606..fd1240a 100644
--- a/services/camera/libcameraservice/device2/Camera2Device.h
+++ b/services/camera/libcameraservice/device2/Camera2Device.h
@@ -84,6 +84,9 @@ class Camera2Device: public CameraDeviceBase {
buffer_handle_t *buffer, wp<BufferReleasedListener> listener);
// Flush implemented as just a wait
virtual status_t flush(int64_t *lastFrameNumber = NULL);
+ // Prepare is a no-op
+ virtual status_t prepare(int streamId);
+
virtual uint32_t getDeviceVersion();
virtual ssize_t getJpegBufferSize(uint32_t width, uint32_t height) const;
diff --git a/services/camera/libcameraservice/device3/Camera3Device.cpp b/services/camera/libcameraservice/device3/Camera3Device.cpp
index dc752a6..d2c2482 100644
--- a/services/camera/libcameraservice/device3/Camera3Device.cpp
+++ b/services/camera/libcameraservice/device3/Camera3Device.cpp
@@ -175,6 +175,8 @@ status_t Camera3Device::initialize(CameraModule *module)
return res;
}
+ mPreparerThread = new PreparerThread();
+
/** Everything is good to go */
mDeviceVersion = device->common.version;
@@ -1080,9 +1082,9 @@ status_t Camera3Device::createDefaultRequest(int templateId,
mHal3Device, templateId);
ATRACE_END();
if (rawRequest == NULL) {
- SET_ERR_L("HAL is unable to construct default settings for template %d",
- templateId);
- return DEAD_OBJECT;
+ ALOGI("%s: template %d is not supported on this camera device",
+ __FUNCTION__, templateId);
+ return BAD_VALUE;
}
*request = rawRequest;
mRequestTemplateCache[templateId] = rawRequest;
@@ -1190,7 +1192,8 @@ status_t Camera3Device::setNotifyCallback(NotificationListener *listener) {
ALOGW("%s: Replacing old callback listener", __FUNCTION__);
}
mListener = listener;
- mRequestThread->setNotifyCallback(listener);
+ mRequestThread->setNotificationListener(listener);
+ mPreparerThread->setNotificationListener(listener);
return OK;
}
@@ -1336,6 +1339,34 @@ status_t Camera3Device::flush(int64_t *frameNumber) {
return res;
}
+status_t Camera3Device::prepare(int streamId) {
+ ATRACE_CALL();
+ ALOGV("%s: Camera %d: Preparing stream %d", __FUNCTION__, mId, streamId);
+
+ sp<Camera3StreamInterface> stream;
+ ssize_t outputStreamIdx = mOutputStreams.indexOfKey(streamId);
+ if (outputStreamIdx == NAME_NOT_FOUND) {
+ CLOGE("Stream %d does not exist", streamId);
+ return BAD_VALUE;
+ }
+
+ stream = mOutputStreams.editValueAt(outputStreamIdx);
+
+ if (stream->isUnpreparable() || stream->hasOutstandingBuffers() ) {
+ ALOGE("%s: Camera %d: Stream %d has already been a request target",
+ __FUNCTION__, mId, streamId);
+ return BAD_VALUE;
+ }
+
+ if (mRequestThread->isStreamPending(stream)) {
+ ALOGE("%s: Camera %d: Stream %d is already a target in a pending request",
+ __FUNCTION__, mId, streamId);
+ return BAD_VALUE;
+ }
+
+ return mPreparerThread->prepare(stream);
+}
+
uint32_t Camera3Device::getDeviceVersion() {
ATRACE_CALL();
Mutex::Autolock il(mInterfaceLock);
@@ -1409,6 +1440,11 @@ sp<Camera3Device::CaptureRequest> Camera3Device::createCaptureRequest(
return NULL;
}
}
+ // Check if stream is being prepared
+ if (mInputStream->isPreparing()) {
+ CLOGE("Request references an input stream that's being prepared!");
+ return NULL;
+ }
newRequest->mInputStream = mInputStream;
newRequest->mSettings.erase(ANDROID_REQUEST_INPUT_STREAMS);
@@ -1441,6 +1477,11 @@ sp<Camera3Device::CaptureRequest> Camera3Device::createCaptureRequest(
return NULL;
}
}
+ // Check if stream is being prepared
+ if (stream->isPreparing()) {
+ CLOGE("Request references an output stream that's being prepared!");
+ return NULL;
+ }
newRequest->mOutputStreams.push(stream);
}
@@ -1916,7 +1957,6 @@ bool Camera3Device::insert3AResult(CameraMetadata& result, int32_t tag,
return true;
}
-
void Camera3Device::returnOutputBuffers(
const camera3_stream_buffer_t *outputBuffers, size_t numBuffers,
nsecs_t timestamp) {
@@ -2416,7 +2456,7 @@ CameraMetadata Camera3Device::getLatestRequestLocked() {
Camera3Device::RequestThread::RequestThread(wp<Camera3Device> parent,
sp<StatusTracker> statusTracker,
camera3_device_t *hal3Device) :
- Thread(false),
+ Thread(/*canCallJava*/false),
mParent(parent),
mStatusTracker(statusTracker),
mHal3Device(hal3Device),
@@ -2432,7 +2472,7 @@ Camera3Device::RequestThread::RequestThread(wp<Camera3Device> parent,
mStatusId = statusTracker->addComponent();
}
-void Camera3Device::RequestThread::setNotifyCallback(
+void Camera3Device::RequestThread::setNotificationListener(
NotificationListener *listener) {
Mutex::Autolock l(mRequestLock);
mListener = listener;
@@ -2846,6 +2886,26 @@ CameraMetadata Camera3Device::RequestThread::getLatestRequest() const {
return mLatestRequest;
}
+bool Camera3Device::RequestThread::isStreamPending(
+ sp<Camera3StreamInterface>& stream) {
+ Mutex::Autolock l(mRequestLock);
+
+ for (const auto& request : mRequestQueue) {
+ for (const auto& s : request->mOutputStreams) {
+ if (stream == s) return true;
+ }
+ if (stream == request->mInputStream) return true;
+ }
+
+ for (const auto& request : mRepeatingRequests) {
+ for (const auto& s : request->mOutputStreams) {
+ if (stream == s) return true;
+ }
+ if (stream == request->mInputStream) return true;
+ }
+
+ return false;
+}
void Camera3Device::RequestThread::cleanUpFailedRequest(
camera3_capture_request_t &request,
@@ -3193,6 +3253,138 @@ status_t Camera3Device::RequestThread::addDummyTriggerIds(
return OK;
}
+/**
+ * PreparerThread inner class methods
+ */
+
+Camera3Device::PreparerThread::PreparerThread() :
+ Thread(/*canCallJava*/false), mActive(false), mCancelNow(false) {
+}
+
+Camera3Device::PreparerThread::~PreparerThread() {
+ Thread::requestExitAndWait();
+ if (mCurrentStream != nullptr) {
+ mCurrentStream->cancelPrepare();
+ ATRACE_ASYNC_END("stream prepare", mCurrentStream->getId());
+ mCurrentStream.clear();
+ }
+ clear();
+}
+
+status_t Camera3Device::PreparerThread::prepare(sp<Camera3StreamInterface>& stream) {
+ status_t res;
+
+ Mutex::Autolock l(mLock);
+
+ res = stream->startPrepare();
+ if (res == OK) {
+ // No preparation needed, fire listener right off
+ ALOGV("%s: Stream %d already prepared", __FUNCTION__, stream->getId());
+ if (mListener) {
+ mListener->notifyPrepared(stream->getId());
+ }
+ return OK;
+ } else if (res != NOT_ENOUGH_DATA) {
+ return res;
+ }
+
+ // Need to prepare, start up thread if necessary
+ if (!mActive) {
+ // mRunning will change to false before the thread fully shuts down, so wait to be sure it
+ // isn't running
+ Thread::requestExitAndWait();
+ res = Thread::run("C3PrepThread", PRIORITY_BACKGROUND);
+ if (res != OK) {
+ ALOGE("%s: Unable to start preparer stream: %d (%s)", __FUNCTION__, res, strerror(-res));
+ if (mListener) {
+ mListener->notifyPrepared(stream->getId());
+ }
+ return res;
+ }
+ mCancelNow = false;
+ mActive = true;
+ ALOGV("%s: Preparer stream started", __FUNCTION__);
+ }
+
+ // queue up the work
+ mPendingStreams.push_back(stream);
+ ALOGV("%s: Stream %d queued for preparing", __FUNCTION__, stream->getId());
+
+ return OK;
+}
+
+status_t Camera3Device::PreparerThread::clear() {
+ status_t res;
+
+ Mutex::Autolock l(mLock);
+
+ for (const auto& stream : mPendingStreams) {
+ stream->cancelPrepare();
+ }
+ mPendingStreams.clear();
+ mCancelNow = true;
+
+ return OK;
+}
+
+void Camera3Device::PreparerThread::setNotificationListener(NotificationListener *listener) {
+ Mutex::Autolock l(mLock);
+ mListener = listener;
+}
+
+bool Camera3Device::PreparerThread::threadLoop() {
+ status_t res;
+ {
+ Mutex::Autolock l(mLock);
+ if (mCurrentStream == nullptr) {
+ // End thread if done with work
+ if (mPendingStreams.empty()) {
+ ALOGV("%s: Preparer stream out of work", __FUNCTION__);
+ // threadLoop _must not_ re-acquire mLock after it sets mActive to false; would
+ // cause deadlock with prepare()'s requestExitAndWait triggered by !mActive.
+ mActive = false;
+ return false;
+ }
+
+ // Get next stream to prepare
+ auto it = mPendingStreams.begin();
+ mCurrentStream = *it;
+ mPendingStreams.erase(it);
+ ATRACE_ASYNC_BEGIN("stream prepare", mCurrentStream->getId());
+ ALOGV("%s: Preparing stream %d", __FUNCTION__, mCurrentStream->getId());
+ } else if (mCancelNow) {
+ mCurrentStream->cancelPrepare();
+ ATRACE_ASYNC_END("stream prepare", mCurrentStream->getId());
+ ALOGV("%s: Cancelling stream %d prepare", __FUNCTION__, mCurrentStream->getId());
+ mCurrentStream.clear();
+ mCancelNow = false;
+ return true;
+ }
+ }
+
+ res = mCurrentStream->prepareNextBuffer();
+ if (res == NOT_ENOUGH_DATA) return true;
+ if (res != OK) {
+ // Something bad happened; try to recover by cancelling prepare and
+ // signalling listener anyway
+ ALOGE("%s: Stream %d returned error %d (%s) during prepare", __FUNCTION__,
+ mCurrentStream->getId(), res, strerror(-res));
+ mCurrentStream->cancelPrepare();
+ }
+
+ // This stream has finished, notify listener
+ Mutex::Autolock l(mLock);
+ if (mListener) {
+ ALOGV("%s: Stream %d prepare done, signaling listener", __FUNCTION__,
+ mCurrentStream->getId());
+ mListener->notifyPrepared(mCurrentStream->getId());
+ }
+
+ ATRACE_ASYNC_END("stream prepare", mCurrentStream->getId());
+ mCurrentStream.clear();
+
+ return true;
+}
/**
* Static callback forwarding methods from HAL to instance
diff --git a/services/camera/libcameraservice/device3/Camera3Device.h b/services/camera/libcameraservice/device3/Camera3Device.h
index b08ba81..4fbcb2e 100644
--- a/services/camera/libcameraservice/device3/Camera3Device.h
+++ b/services/camera/libcameraservice/device3/Camera3Device.h
@@ -138,6 +138,8 @@ class Camera3Device :
virtual status_t flush(int64_t *lastFrameNumber = NULL);
+ virtual status_t prepare(int streamId);
+
virtual uint32_t getDeviceVersion();
virtual ssize_t getJpegBufferSize(uint32_t width, uint32_t height) const;
@@ -374,7 +376,7 @@ class Camera3Device :
sp<camera3::StatusTracker> statusTracker,
camera3_device_t *hal3Device);
- void setNotifyCallback(NotificationListener *listener);
+ void setNotificationListener(NotificationListener *listener);
/**
* Call after stream (re)-configuration is completed.
@@ -438,6 +440,12 @@ class Camera3Device :
*/
CameraMetadata getLatestRequest() const;
+ /**
+ * Returns true if the stream is a target of any queued or repeating
+ * capture request
+ */
+ bool isStreamPending(sp<camera3::Camera3StreamInterface>& stream);
+
protected:
virtual bool threadLoop();
@@ -559,7 +567,6 @@ class Camera3Device :
Vector<camera3_stream_buffer_t> pendingOutputBuffers;
-
// Fields used by the partial result only
struct PartialResultInFlight {
// Set by process_capture_result once 3A has been sent to clients
@@ -610,7 +617,8 @@ class Camera3Device :
resultExtras(extras),
hasInputBuffer(hasInput){
}
-};
+ };
+
// Map from frame number to the in-flight request state
typedef KeyedVector<uint32_t, InFlightRequest> InFlightMap;
@@ -642,6 +650,45 @@ class Camera3Device :
sp<camera3::StatusTracker> mStatusTracker;
/**
+ * Thread for preparing streams
+ */
+ class PreparerThread : private Thread, public virtual RefBase {
+ public:
+ PreparerThread();
+ ~PreparerThread();
+
+ void setNotificationListener(NotificationListener *listener);
+
+ /**
+ * Queue up a stream to be prepared. Streams are processed by
+ * a background thread in FIFO order
+ */
+ status_t prepare(sp<camera3::Camera3StreamInterface>& stream);
+
+ /**
+ * Cancel all current and pending stream preparation
+ */
+ status_t clear();
+
+ private:
+ Mutex mLock;
+
+ virtual bool threadLoop();
+
+ // Guarded by mLock
+
+ NotificationListener *mListener;
+ List<sp<camera3::Camera3StreamInterface> > mPendingStreams;
+ bool mActive;
+ bool mCancelNow;
+
+ // Only accessed by threadLoop and the destructor
+
+ sp<camera3::Camera3StreamInterface> mCurrentStream;
+ };
+ sp<PreparerThread> mPreparerThread;
+
+ /**
* Output result queue and current HAL device 3A state
*/
diff --git a/services/camera/libcameraservice/device3/Camera3DummyStream.cpp b/services/camera/libcameraservice/device3/Camera3DummyStream.cpp
index 01edfff..ecb8ac8 100644
--- a/services/camera/libcameraservice/device3/Camera3DummyStream.cpp
+++ b/services/camera/libcameraservice/device3/Camera3DummyStream.cpp
@@ -87,7 +87,7 @@ status_t Camera3DummyStream::disconnectLocked() {
return OK;
}
-status_t Camera3DummyStream::getEndpointUsage(uint32_t *usage) {
+status_t Camera3DummyStream::getEndpointUsage(uint32_t *usage) const {
*usage = DUMMY_USAGE;
return OK;
}
diff --git a/services/camera/libcameraservice/device3/Camera3DummyStream.h b/services/camera/libcameraservice/device3/Camera3DummyStream.h
index d023c57..3a3dbf4 100644
--- a/services/camera/libcameraservice/device3/Camera3DummyStream.h
+++ b/services/camera/libcameraservice/device3/Camera3DummyStream.h
@@ -89,7 +89,7 @@ class Camera3DummyStream :
virtual status_t configureQueueLocked();
- virtual status_t getEndpointUsage(uint32_t *usage);
+ virtual status_t getEndpointUsage(uint32_t *usage) const;
}; // class Camera3DummyStream
diff --git a/services/camera/libcameraservice/device3/Camera3IOStreamBase.cpp b/services/camera/libcameraservice/device3/Camera3IOStreamBase.cpp
index 8696413..23b1c45 100644
--- a/services/camera/libcameraservice/device3/Camera3IOStreamBase.cpp
+++ b/services/camera/libcameraservice/device3/Camera3IOStreamBase.cpp
@@ -67,13 +67,18 @@ bool Camera3IOStreamBase::hasOutstandingBuffersLocked() const {
void Camera3IOStreamBase::dump(int fd, const Vector<String16> &args) const {
(void) args;
String8 lines;
+
+ uint32_t consumerUsage = 0;
+ status_t res = getEndpointUsage(&consumerUsage);
+ if (res != OK) consumerUsage = 0;
+
lines.appendFormat(" State: %d\n", mState);
- lines.appendFormat(" Dims: %d x %d, format 0x%x\n",
+ lines.appendFormat(" Dims: %d x %d, format 0x%x, dataspace 0x%x\n",
camera3_stream::width, camera3_stream::height,
- camera3_stream::format);
+ camera3_stream::format, camera3_stream::data_space);
lines.appendFormat(" Max size: %zu\n", mMaxSize);
- lines.appendFormat(" Usage: %d, max HAL buffers: %d\n",
- camera3_stream::usage, camera3_stream::max_buffers);
+ lines.appendFormat(" Combined usage: %d, max HAL buffers: %d\n",
+ camera3_stream::usage | consumerUsage, camera3_stream::max_buffers);
lines.appendFormat(" Frames produced: %d, last timestamp: %" PRId64 " ns\n",
mFrameCount, mLastTimestamp);
lines.appendFormat(" Total buffers: %zu, currently dequeued: %zu\n",
@@ -156,13 +161,11 @@ void Camera3IOStreamBase::handoutBufferLocked(camera3_stream_buffer &buffer,
// Inform tracker about becoming busy
if (mHandoutTotalBufferCount == 0 && mState != STATE_IN_CONFIG &&
- mState != STATE_IN_RECONFIG) {
+ mState != STATE_IN_RECONFIG && mState != STATE_PREPARING) {
/**
* Avoid a spurious IDLE->ACTIVE->IDLE transition when using buffers
* before/after register_stream_buffers during initial configuration
- * or re-configuration.
- *
- * TODO: IN_CONFIG and IN_RECONFIG checks only make sense for <HAL3.2
+ * or re-configuration, or during prepare pre-allocation
*/
sp<StatusTracker> statusTracker = mStatusTracker.promote();
if (statusTracker != 0) {
@@ -177,9 +180,11 @@ void Camera3IOStreamBase::handoutBufferLocked(camera3_stream_buffer &buffer,
}
status_t Camera3IOStreamBase::getBufferPreconditionCheckLocked() const {
- // Allow dequeue during IN_[RE]CONFIG for registration
+ // Allow dequeue during IN_[RE]CONFIG for registration, in
+ // PREPARING for pre-allocation
if (mState != STATE_CONFIGURED &&
- mState != STATE_IN_CONFIG && mState != STATE_IN_RECONFIG) {
+ mState != STATE_IN_CONFIG && mState != STATE_IN_RECONFIG &&
+ mState != STATE_PREPARING) {
ALOGE("%s: Stream %d: Can't get buffers in unconfigured state %d",
__FUNCTION__, mId, mState);
return INVALID_OPERATION;
@@ -240,13 +245,11 @@ status_t Camera3IOStreamBase::returnAnyBufferLocked(
mHandoutTotalBufferCount--;
if (mHandoutTotalBufferCount == 0 && mState != STATE_IN_CONFIG &&
- mState != STATE_IN_RECONFIG) {
+ mState != STATE_IN_RECONFIG && mState != STATE_PREPARING) {
/**
* Avoid a spurious IDLE->ACTIVE->IDLE transition when using buffers
* before/after register_stream_buffers during initial configuration
- * or re-configuration.
- *
- * TODO: IN_CONFIG and IN_RECONFIG checks only make sense for <HAL3.2
+ * or re-configuration, or during prepare pre-allocation
*/
ALOGV("%s: Stream %d: All buffers returned; now idle", __FUNCTION__,
mId);
diff --git a/services/camera/libcameraservice/device3/Camera3IOStreamBase.h b/services/camera/libcameraservice/device3/Camera3IOStreamBase.h
index abcf2b1..f5727e8 100644
--- a/services/camera/libcameraservice/device3/Camera3IOStreamBase.h
+++ b/services/camera/libcameraservice/device3/Camera3IOStreamBase.h
@@ -84,7 +84,7 @@ class Camera3IOStreamBase :
virtual size_t getHandoutInputBufferCountLocked();
- virtual status_t getEndpointUsage(uint32_t *usage) = 0;
+ virtual status_t getEndpointUsage(uint32_t *usage) const = 0;
status_t getBufferPreconditionCheckLocked() const;
status_t returnBufferPreconditionCheckLocked() const;
diff --git a/services/camera/libcameraservice/device3/Camera3InputStream.cpp b/services/camera/libcameraservice/device3/Camera3InputStream.cpp
index fa97e57..84c5754 100644
--- a/services/camera/libcameraservice/device3/Camera3InputStream.cpp
+++ b/services/camera/libcameraservice/device3/Camera3InputStream.cpp
@@ -275,7 +275,7 @@ status_t Camera3InputStream::configureQueueLocked() {
return OK;
}
-status_t Camera3InputStream::getEndpointUsage(uint32_t *usage) {
+status_t Camera3InputStream::getEndpointUsage(uint32_t *usage) const {
// Per HAL3 spec, input streams have 0 for their initial usage field.
*usage = 0;
return OK;
diff --git a/services/camera/libcameraservice/device3/Camera3InputStream.h b/services/camera/libcameraservice/device3/Camera3InputStream.h
index 7ba36c9..9f3de10 100644
--- a/services/camera/libcameraservice/device3/Camera3InputStream.h
+++ b/services/camera/libcameraservice/device3/Camera3InputStream.h
@@ -75,7 +75,7 @@ class Camera3InputStream : public Camera3IOStreamBase {
virtual status_t configureQueueLocked();
- virtual status_t getEndpointUsage(uint32_t *usage);
+ virtual status_t getEndpointUsage(uint32_t *usage) const;
}; // class Camera3InputStream
diff --git a/services/camera/libcameraservice/device3/Camera3OutputStream.cpp b/services/camera/libcameraservice/device3/Camera3OutputStream.cpp
index 8d9b360..7a0331b 100644
--- a/services/camera/libcameraservice/device3/Camera3OutputStream.cpp
+++ b/services/camera/libcameraservice/device3/Camera3OutputStream.cpp
@@ -209,6 +209,13 @@ status_t Camera3OutputStream::returnBufferCheckedLocked(
}
}
mLock.lock();
+
+ // Once a valid buffer has been returned to the queue, can no longer
+ // dequeue all buffers for preallocation.
+ if (buffer.status != CAMERA3_BUFFER_STATUS_ERROR) {
+ mStreamUnpreparable = true;
+ }
+
if (res != OK) {
close(anwReleaseFence);
}
@@ -390,7 +397,7 @@ status_t Camera3OutputStream::disconnectLocked() {
return OK;
}
-status_t Camera3OutputStream::getEndpointUsage(uint32_t *usage) {
+status_t Camera3OutputStream::getEndpointUsage(uint32_t *usage) const {
status_t res;
int32_t u = 0;
diff --git a/services/camera/libcameraservice/device3/Camera3OutputStream.h b/services/camera/libcameraservice/device3/Camera3OutputStream.h
index 12b2ebb..513b695 100644
--- a/services/camera/libcameraservice/device3/Camera3OutputStream.h
+++ b/services/camera/libcameraservice/device3/Camera3OutputStream.h
@@ -99,7 +99,7 @@ class Camera3OutputStream :
virtual status_t configureQueueLocked();
- virtual status_t getEndpointUsage(uint32_t *usage);
+ virtual status_t getEndpointUsage(uint32_t *usage) const;
}; // class Camera3OutputStream
diff --git a/services/camera/libcameraservice/device3/Camera3Stream.cpp b/services/camera/libcameraservice/device3/Camera3Stream.cpp
index d3c5cc3..3821da1 100644
--- a/services/camera/libcameraservice/device3/Camera3Stream.cpp
+++ b/services/camera/libcameraservice/device3/Camera3Stream.cpp
@@ -194,6 +194,11 @@ status_t Camera3Stream::finishConfiguration(camera3_device *hal3Device) {
return OK;
}
+ // Reset prepared state, since buffer config has changed, and existing
+ // allocations are no longer valid
+ mPrepared = false;
+ mStreamUnpreparable = false;
+
status_t res;
res = configureQueueLocked();
if (res != OK) {
@@ -244,6 +249,125 @@ status_t Camera3Stream::cancelConfiguration() {
return OK;
}
+bool Camera3Stream::isUnpreparable() {
+ ATRACE_CALL();
+
+ Mutex::Autolock l(mLock);
+ return mStreamUnpreparable;
+}
+
+status_t Camera3Stream::startPrepare() {
+ ATRACE_CALL();
+
+ Mutex::Autolock l(mLock);
+ status_t res = OK;
+
+ // This function should be only called when the stream is configured already.
+ if (mState != STATE_CONFIGURED) {
+ ALOGE("%s: Stream %d: Can't prepare stream if stream is not in CONFIGURED "
+ "state %d", __FUNCTION__, mId, mState);
+ return INVALID_OPERATION;
+ }
+
+ // This function can't be called if the stream has already received filled
+ // buffers
+ if (mStreamUnpreparable) {
+ ALOGE("%s: Stream %d: Can't prepare stream that's already in use",
+ __FUNCTION__, mId);
+ return INVALID_OPERATION;
+ }
+
+ if (getHandoutOutputBufferCountLocked() > 0) {
+ ALOGE("%s: Stream %d: Can't prepare stream that has outstanding buffers",
+ __FUNCTION__, mId);
+ return INVALID_OPERATION;
+ }
+
+ if (mPrepared) return OK;
+
+ size_t bufferCount = getBufferCountLocked();
+
+ mPreparedBuffers.insertAt(camera3_stream_buffer_t(), /*index*/0, bufferCount);
+ mPreparedBufferIdx = 0;
+
+ mState = STATE_PREPARING;
+
+ return NOT_ENOUGH_DATA;
+}
+
+bool Camera3Stream::isPreparing() const {
+ Mutex::Autolock l(mLock);
+ return mState == STATE_PREPARING;
+}
+
+status_t Camera3Stream::prepareNextBuffer() {
+ ATRACE_CALL();
+
+ Mutex::Autolock l(mLock);
+ status_t res = OK;
+
+ // This function should be only called when the stream is preparing
+ if (mState != STATE_PREPARING) {
+ ALOGE("%s: Stream %d: Can't prepare buffer if stream is not in PREPARING "
+ "state %d", __FUNCTION__, mId, mState);
+ return INVALID_OPERATION;
+ }
+
+ // Get next buffer - this may allocate, and take a while for large buffers
+ res = getBufferLocked( &mPreparedBuffers.editItemAt(mPreparedBufferIdx) );
+ if (res != OK) {
+ ALOGE("%s: Stream %d: Unable to allocate buffer %d during preparation",
+ __FUNCTION__, mId, mPreparedBufferIdx);
+ return NO_INIT;
+ }
+
+ mPreparedBufferIdx++;
+
+ // Check if we still have buffers left to allocate
+ if (mPreparedBufferIdx < mPreparedBuffers.size()) {
+ return NOT_ENOUGH_DATA;
+ }
+
+ // Done with prepare - mark stream as such, and return all buffers
+ // via cancelPrepare
+ mPrepared = true;
+
+ return cancelPrepareLocked();
+}
+
+status_t Camera3Stream::cancelPrepare() {
+ ATRACE_CALL();
+
+ Mutex::Autolock l(mLock);
+
+ return cancelPrepareLocked();
+}
+
+status_t Camera3Stream::cancelPrepareLocked() {
+ status_t res = OK;
+
+ // This function should be only called when the stream is mid-preparing.
+ if (mState != STATE_PREPARING) {
+ ALOGE("%s: Stream %d: Can't cancel prepare stream if stream is not in "
+ "PREPARING state %d", __FUNCTION__, mId, mState);
+ return INVALID_OPERATION;
+ }
+
+ // Return all valid buffers to stream, in ERROR state to indicate
+ // they weren't filled.
+ for (size_t i = 0; i < mPreparedBufferIdx; i++) {
+ mPreparedBuffers.editItemAt(i).release_fence = -1;
+ mPreparedBuffers.editItemAt(i).status = CAMERA3_BUFFER_STATUS_ERROR;
+ returnBufferLocked(mPreparedBuffers[i], 0);
+ }
+ mPreparedBuffers.clear();
+ mPreparedBufferIdx = 0;
+
+ mState = STATE_CONFIGURED;
+
+ return res;
+}
+
status_t Camera3Stream::getBuffer(camera3_stream_buffer *buffer) {
ATRACE_CALL();
Mutex::Autolock l(mLock);
@@ -427,15 +551,13 @@ status_t Camera3Stream::registerBuffersLocked(camera3_device *hal3Device) {
ALOGE("%s: register_stream_buffers is deprecated in HAL3.2; "
"must be set to NULL in camera3_device::ops", __FUNCTION__);
return INVALID_OPERATION;
- } else {
- ALOGD("%s: Skipping NULL check for deprecated register_stream_buffers", __FUNCTION__);
}
return OK;
- } else {
- ALOGV("%s: register_stream_buffers using deprecated code path", __FUNCTION__);
}
+ ALOGV("%s: register_stream_buffers using deprecated code path", __FUNCTION__);
+
status_t res;
size_t bufferCount = getBufferCountLocked();
@@ -491,6 +613,8 @@ status_t Camera3Stream::registerBuffersLocked(camera3_device *hal3Device) {
returnBufferLocked(streamBuffers[i], 0);
}
+ mPrepared = true;
+
return res;
}
diff --git a/services/camera/libcameraservice/device3/Camera3Stream.h b/services/camera/libcameraservice/device3/Camera3Stream.h
index e89361e..0543c66 100644
--- a/services/camera/libcameraservice/device3/Camera3Stream.h
+++ b/services/camera/libcameraservice/device3/Camera3Stream.h
@@ -57,8 +57,15 @@ namespace camera3 {
* re-registering buffers with HAL.
*
* STATE_CONFIGURED: Stream is configured, and has registered buffers with the
- * HAL. The stream's getBuffer/returnBuffer work. The priv pointer may still be
- * modified.
+ * HAL (if necessary). The stream's getBuffer/returnBuffer work. The priv
+ * pointer may still be modified.
+ *
+ * STATE_PREPARING: The stream's buffers are being pre-allocated for use. On
+ * older HALs, this is done as part of configuration, but in newer HALs
+ * buffers may be allocated at time of first use. But some use cases require
+ * buffer allocation upfront, to minmize disruption due to lengthy allocation
+ * duration. In this state, only prepareNextBuffer() and cancelPrepare()
+ * may be called.
*
* Transition table:
*
@@ -82,6 +89,12 @@ namespace camera3 {
* STATE_CONFIGURED => STATE_CONSTRUCTED:
* When disconnect() is called after making sure stream is idle with
* waitUntilIdle().
+ * STATE_CONFIGURED => STATE_PREPARING:
+ * When startPrepare is called before the stream has a buffer
+ * queued back into it for the first time.
+ * STATE_PREPARING => STATE_CONFIGURED:
+ * When sufficient prepareNextBuffer calls have been made to allocate
+ * all stream buffers, or cancelPrepare is called.
*
* Status Tracking:
* Each stream is tracked by StatusTracker as a separate component,
@@ -167,6 +180,73 @@ class Camera3Stream :
status_t cancelConfiguration();
/**
+ * Determine whether the stream has already become in-use (has received
+ * a valid filled buffer), which determines if a stream can still have
+ * prepareNextBuffer called on it.
+ */
+ bool isUnpreparable();
+
+ /**
+ * Start stream preparation. May only be called in the CONFIGURED state,
+ * when no valid buffers have yet been returned to this stream.
+ *
+ * If no prepartion is necessary, returns OK and does not transition to
+ * PREPARING state. Otherwise, returns NOT_ENOUGH_DATA and transitions
+ * to PREPARING.
+ *
+ * This call performs no allocation, so is quick to call.
+ *
+ * Returns:
+ * OK if no more buffers need to be preallocated
+ * NOT_ENOUGH_DATA if calls to prepareNextBuffer are needed to finish
+ * buffer pre-allocation, and transitions to the PREPARING state.
+ * NO_INIT in case of a serious error from the HAL device
+ * INVALID_OPERATION if called when not in CONFIGURED state, or a
+ * valid buffer has already been returned to this stream.
+ */
+ status_t startPrepare();
+
+ /**
+ * Check if the stream is mid-preparing.
+ */
+ bool isPreparing() const;
+
+ /**
+ * Continue stream buffer preparation by allocating the next
+ * buffer for this stream. May only be called in the PREPARED state.
+ *
+ * Returns OK and transitions to the CONFIGURED state if all buffers
+ * are allocated after the call concludes. Otherwise returns NOT_ENOUGH_DATA.
+ *
+ * This call allocates one buffer, which may take several milliseconds for
+ * large buffers.
+ *
+ * Returns:
+ * OK if no more buffers need to be preallocated, and transitions
+ * to the CONFIGURED state.
+ * NOT_ENOUGH_DATA if more calls to prepareNextBuffer are needed to finish
+ * buffer pre-allocation.
+ * NO_INIT in case of a serious error from the HAL device
+ * INVALID_OPERATION if called when not in CONFIGURED state, or a
+ * valid buffer has already been returned to this stream.
+ */
+ status_t prepareNextBuffer();
+
+ /**
+ * Cancel stream preparation early. In case allocation needs to be
+ * stopped, this method transitions the stream back to the CONFIGURED state.
+ * Buffers that have been allocated with prepareNextBuffer remain that way,
+ * but a later use of prepareNextBuffer will require just as many
+ * calls as if the earlier prepare attempt had not existed.
+ *
+ * Returns:
+ * OK if cancellation succeeded, and transitions to the CONFIGURED state
+ * INVALID_OPERATION if not in the PREPARING state
+ * NO_INIT in case of a serious error from the HAL device
+ */
+ status_t cancelPrepare();
+
+ /**
* Fill in the camera3_stream_buffer with the next valid buffer for this
* stream, to hand over to the HAL.
*
@@ -263,7 +343,8 @@ class Camera3Stream :
STATE_CONSTRUCTED,
STATE_IN_CONFIG,
STATE_IN_RECONFIG,
- STATE_CONFIGURED
+ STATE_CONFIGURED,
+ STATE_PREPARING
} mState;
mutable Mutex mLock;
@@ -312,13 +393,17 @@ class Camera3Stream :
// Get the usage flags for the other endpoint, or return
// INVALID_OPERATION if they cannot be obtained.
- virtual status_t getEndpointUsage(uint32_t *usage) = 0;
+ virtual status_t getEndpointUsage(uint32_t *usage) const = 0;
// Tracking for idle state
wp<StatusTracker> mStatusTracker;
// Status tracker component ID
int mStatusId;
+ // Tracking for stream prepare - whether this stream can still have
+ // prepareNextBuffer called on it.
+ bool mStreamUnpreparable;
+
private:
uint32_t oldUsage;
uint32_t oldMaxBuffers;
@@ -333,6 +418,18 @@ class Camera3Stream :
bool acquired, bool output);
List<wp<Camera3StreamBufferListener> > mBufferListenerList;
+ status_t cancelPrepareLocked();
+
+ // Tracking for PREPARING state
+
+ // State of buffer preallocation. Only true if either prepareNextBuffer
+ // has been called sufficient number of times, or stream configuration
+ // had to register buffers with the HAL
+ bool mPrepared;
+
+ Vector<camera3_stream_buffer_t> mPreparedBuffers;
+ size_t mPreparedBufferIdx;
+
}; // class Camera3Stream
}; // namespace camera3
diff --git a/services/camera/libcameraservice/device3/Camera3StreamInterface.h b/services/camera/libcameraservice/device3/Camera3StreamInterface.h
index ea90dd9..d177b57 100644
--- a/services/camera/libcameraservice/device3/Camera3StreamInterface.h
+++ b/services/camera/libcameraservice/device3/Camera3StreamInterface.h
@@ -89,6 +89,68 @@ class Camera3StreamInterface : public virtual RefBase {
virtual status_t cancelConfiguration() = 0;
/**
+ * Determine whether the stream has already become in-use (has received
+ * a valid filled buffer), which determines if a stream can still have
+ * prepareNextBuffer called on it.
+ */
+ virtual bool isUnpreparable() = 0;
+
+ /**
+ * Start stream preparation. May only be called in the CONFIGURED state,
+ * when no valid buffers have yet been returned to this stream.
+ *
+ * If no prepartion is necessary, returns OK and does not transition to
+ * PREPARING state. Otherwise, returns NOT_ENOUGH_DATA and transitions
+ * to PREPARING.
+ *
+ * Returns:
+ * OK if no more buffers need to be preallocated
+ * NOT_ENOUGH_DATA if calls to prepareNextBuffer are needed to finish
+ * buffer pre-allocation, and transitions to the PREPARING state.
+ * NO_INIT in case of a serious error from the HAL device
+ * INVALID_OPERATION if called when not in CONFIGURED state, or a
+ * valid buffer has already been returned to this stream.
+ */
+ virtual status_t startPrepare() = 0;
+
+ /**
+ * Check if the stream is mid-preparing.
+ */
+ virtual bool isPreparing() const = 0;
+
+ /**
+ * Continue stream buffer preparation by allocating the next
+ * buffer for this stream. May only be called in the PREPARED state.
+ *
+ * Returns OK and transitions to the CONFIGURED state if all buffers
+ * are allocated after the call concludes. Otherwise returns NOT_ENOUGH_DATA.
+ *
+ * Returns:
+ * OK if no more buffers need to be preallocated, and transitions
+ * to the CONFIGURED state.
+ * NOT_ENOUGH_DATA if more calls to prepareNextBuffer are needed to finish
+ * buffer pre-allocation.
+ * NO_INIT in case of a serious error from the HAL device
+ * INVALID_OPERATION if called when not in CONFIGURED state, or a
+ * valid buffer has already been returned to this stream.
+ */
+ virtual status_t prepareNextBuffer() = 0;
+
+ /**
+ * Cancel stream preparation early. In case allocation needs to be
+ * stopped, this method transitions the stream back to the CONFIGURED state.
+ * Buffers that have been allocated with prepareNextBuffer remain that way,
+ * but a later use of prepareNextBuffer will require just as many
+ * calls as if the earlier prepare attempt had not existed.
+ *
+ * Returns:
+ * OK if cancellation succeeded, and transitions to the CONFIGURED state
+ * INVALID_OPERATION if not in the PREPARING state
+ * NO_INIT in case of a serious error from the HAL device
+ */
+ virtual status_t cancelPrepare() = 0;
+
+ /**
* Fill in the camera3_stream_buffer with the next valid buffer for this
* stream, to hand over to the HAL.
*