Camera: clear buffer cache when stream is reconfigured

Also fix a issue for finishConfiguration is unintentionally
delayed till first capture request.

Test: Camera CTS + partner device testing
Bug: 126390310
Change-Id: Ibca740a7160cbf41e01884dbcef8ba51eb4c75f7

services/camera/libcameraservice/device3/Camera3Device.cpp

@@ -2522,6 +2522,9 @@ status_t Camera3Device::setConsumerSurfaces(int streamId,
         CLOGE("Stream %d is unknown", streamId);
         return BAD_VALUE;
     }
+
+    // isConsumerConfigurationDeferred will be off after setConsumers
+    bool isDeferred = stream->isConsumerConfigurationDeferred();
     status_t res = stream->setConsumers(consumers);
     if (res != OK) {
         CLOGE("Stream %d set consumer failed (error %d %s) ", streamId, res, strerror(-res));
@@ -2537,7 +2540,7 @@ status_t Camera3Device::setConsumerSurfaces(int streamId,
         surfaceIds->push_back(id);
     }
 
-    if (stream->isConsumerConfigurationDeferred()) {
+    if (isDeferred) {
         if (!stream->isConfiguring()) {
             CLOGE("Stream %d was already fully configured.", streamId);
             return INVALID_OPERATION;
@@ -2612,7 +2615,6 @@ status_t Camera3Device::dropStreamBuffers(bool dropping, int streamId) {
 sp<Camera3Device::CaptureRequest> Camera3Device::createCaptureRequest(
         const PhysicalCameraSettingsList &request, const SurfaceMap &surfaceMap) {
     ATRACE_CALL();
-    status_t res;
 
     sp<CaptureRequest> newRequest = new CaptureRequest;
     newRequest->mSettingsList = request;
@@ -2626,16 +2628,11 @@ sp<Camera3Device::CaptureRequest> Camera3Device::createCaptureRequest(
                     inputStreams.data.u8[0]);
             return NULL;
         }
-        // Lazy completion of stream configuration (allocation/registration)
-        // on first use
+
         if (mInputStream->isConfiguring()) {
-            res = mInputStream->finishConfiguration();
-            if (res != OK) {
-                SET_ERR_L("Unable to finish configuring input stream %d:"
-                        " %s (%d)",
-                        mInputStream->getId(), strerror(-res), res);
-                return NULL;
-            }
+            SET_ERR_L("%s: input stream %d is not configured!",
+                    __FUNCTION__, mInputStream->getId());
+            return NULL;
         }
         // Check if stream prepare is blocking requests.
         if (mInputStream->isBlockedByPrepare()) {
@@ -2675,15 +2672,9 @@ sp<Camera3Device::CaptureRequest> Camera3Device::createCaptureRequest(
             newRequest->mOutputSurfaces[streams.data.i32[i]] = surfaces;
         }
 
-        // Lazy completion of stream configuration (allocation/registration)
-        // on first use
         if (stream->isConfiguring()) {
-            res = stream->finishConfiguration();
-            if (res != OK) {
-                SET_ERR_L("Unable to finish configuring stream %d: %s (%d)",
-                        stream->getId(), strerror(-res), res);
-                return NULL;
-            }
+            SET_ERR_L("%s: stream %d is not configured!", __FUNCTION__, stream->getId());
+            return NULL;
         }
         // Check if stream prepare is blocking requests.
         if (stream->isBlockedByPrepare()) {
@@ -2908,7 +2899,8 @@ status_t Camera3Device::configureStreamsLocked(int operatingMode,
     // faster
 
     if (mInputStream != NULL && mInputStream->isConfiguring()) {
-        res = mInputStream->finishConfiguration();
+        bool streamReConfigured = false;
+        res = mInputStream->finishConfiguration(&streamReConfigured);
         if (res != OK) {
             CLOGE("Can't finish configuring input stream %d: %s (%d)",
                     mInputStream->getId(), strerror(-res), res);
@@ -2918,12 +2910,16 @@ status_t Camera3Device::configureStreamsLocked(int operatingMode,
             }
             return BAD_VALUE;
         }
+        if (streamReConfigured) {
+            mInterface->onStreamReConfigured(mInputStream->getId());
+        }
     }
 
     for (size_t i = 0; i < mOutputStreams.size(); i++) {
         sp<Camera3OutputStreamInterface> outputStream = mOutputStreams[i];
         if (outputStream->isConfiguring() && !outputStream->isConsumerConfigurationDeferred()) {
-            res = outputStream->finishConfiguration();
+            bool streamReConfigured = false;
+            res = outputStream->finishConfiguration(&streamReConfigured);
             if (res != OK) {
                 CLOGE("Can't finish configuring output stream %d: %s (%d)",
                         outputStream->getId(), strerror(-res), res);
@@ -2933,6 +2929,9 @@ status_t Camera3Device::configureStreamsLocked(int operatingMode,
                 }
                 return BAD_VALUE;
             }
+            if (streamReConfigured) {
+                mInterface->onStreamReConfigured(outputStream->getId());
+            }
         }
     }
 
@@ -4780,7 +4779,7 @@ void Camera3Device::HalInterface::onBufferFreed(
                 __FUNCTION__, handle, streamId);
         return;
     } else {
-        bufferId =  it->second;
+        bufferId = it->second;
         bIdMap.erase(it);
         ALOGV("%s: stream %d now have %zu buffer caches after removing buf %p",
                 __FUNCTION__, streamId, bIdMap.size(), handle);
@@ -4788,6 +4787,22 @@ void Camera3Device::HalInterface::onBufferFreed(
     mFreedBuffers.push_back(std::make_pair(streamId, bufferId));
 }
 
+void Camera3Device::HalInterface::onStreamReConfigured(int streamId) {
+    std::lock_guard<std::mutex> lock(mBufferIdMapLock);
+    auto mapIt = mBufferIdMaps.find(streamId);
+    if (mapIt == mBufferIdMaps.end()) {
+        ALOGE("%s: streamId %d not found!", __FUNCTION__, streamId);
+        return;
+    }
+
+    BufferIdMap& bIdMap = mapIt->second;
+    for (const auto& it : bIdMap) {
+        uint64_t bufferId = it.second;
+        mFreedBuffers.push_back(std::make_pair(streamId, bufferId));
+    }
+    bIdMap.clear();
+}
+
 /**
  * RequestThread inner class methods
  */

services/camera/libcameraservice/device3/Camera3Device.h

@@ -336,6 +336,8 @@ class Camera3Device :
         // Get a vector of bufferId of currently inflight buffers
         void getInflightRequestBufferKeys(std::vector<uint64_t>* out);
 
+        void onStreamReConfigured(int streamId);
+
         static const uint64_t BUFFER_ID_NO_BUFFER = 0;
       private:
         // Always valid

services/camera/libcameraservice/device3/Camera3Stream.cpp

@@ -287,8 +287,11 @@ bool Camera3Stream::isConfiguring() const {
     return (mState == STATE_IN_CONFIG) || (mState == STATE_IN_RECONFIG);
 }
 
-status_t Camera3Stream::finishConfiguration() {
+status_t Camera3Stream::finishConfiguration(/*out*/bool* streamReconfigured) {
     ATRACE_CALL();
+    if (streamReconfigured != nullptr) {
+        *streamReconfigured = false;
+    }
     Mutex::Autolock l(mLock);
     switch (mState) {
         case STATE_ERROR:
@@ -313,7 +316,7 @@ status_t Camera3Stream::finishConfiguration() {
 
     // Register for idle tracking
     sp<StatusTracker> statusTracker = mStatusTracker.promote();
-    if (statusTracker != 0) {
+    if (statusTracker != 0 && mStatusId == StatusTracker::NO_STATUS_ID) {
         mStatusId = statusTracker->addComponent();
     }
 
@@ -332,6 +335,7 @@ status_t Camera3Stream::finishConfiguration() {
     mPrepareBlockRequest = true;
     mStreamUnpreparable = false;
 
+    bool reconfiguring = (mState == STATE_IN_RECONFIG);
     status_t res;
     res = configureQueueLocked();
     // configureQueueLocked could return error in case of abandoned surface.
@@ -348,6 +352,9 @@ status_t Camera3Stream::finishConfiguration() {
         return res;
     }
 
+    if (reconfiguring && streamReconfigured != nullptr) {
+        *streamReconfigured = true;
+    }
     mState = STATE_CONFIGURED;
 
     return res;

services/camera/libcameraservice/device3/Camera3Stream.h

@@ -197,6 +197,8 @@ class Camera3Stream :
      * after this call, but can still be read until the destruction of the
      * stream.
      *
+     * streamReconfigured: set to true when a stream is being reconfigured.
+     *
      * Returns:
      *   OK on a successful configuration
      *   NO_INIT in case of a serious error from the HAL device
@@ -204,7 +206,7 @@ class Camera3Stream :
      *   INVALID_OPERATION in case connecting to the consumer failed or consumer
      *       doesn't exist yet.
      */
-    status_t         finishConfiguration();
+    status_t         finishConfiguration(/*out*/bool* streamReconfigured = nullptr);
 
     /**
      * Cancels the stream configuration process. This returns the stream to the

services/camera/libcameraservice/device3/Camera3StreamInterface.h

@@ -130,13 +130,15 @@ class Camera3StreamInterface : public virtual RefBase {
      * modified after this call, but can still be read until the destruction of
      * the stream.
      *
+     * streamReconfigured: set to true when a stream is being reconfigured.
+     *
      * Returns:
      *   OK on a successful configuration
      *   NO_INIT in case of a serious error from the HAL device
      *   NO_MEMORY in case of an error registering buffers
      *   INVALID_OPERATION in case connecting to the consumer failed
      */
-    virtual status_t finishConfiguration() = 0;
+    virtual status_t finishConfiguration(/*out*/bool* streamReconfigured = nullptr) = 0;
 
     /**
      * Cancels the stream configuration process. This returns the stream to the