device3/Camera3InputStream.cpp \
device3/Camera3OutputStream.cpp \
device3/Camera3ZslStream.cpp \
+ device3/Camera3DummyStream.cpp \
device3/StatusTracker.cpp \
gui/RingBufferConsumer.cpp \
utils/CameraTraces.cpp \
#include "device3/Camera3OutputStream.h"
#include "device3/Camera3InputStream.h"
#include "device3/Camera3ZslStream.h"
+#include "device3/Camera3DummyStream.h"
#include "CameraService.h"
using namespace android::camera3;
mHal3Device = device;
mStatus = STATUS_UNCONFIGURED;
mNextStreamId = 0;
+ mDummyStreamId = NO_STREAM;
mNeedConfig = true;
mPauseStateNotify = false;
return OK;
}
+ // Workaround for device HALv3.2 or older spec bug - zero streams requires
+ // adding a dummy stream instead.
+ // TODO: Bug: 17321404 for fixing the HAL spec and removing this workaround.
+ if (mOutputStreams.size() == 0) {
+ addDummyStreamLocked();
+ } else {
+ tryRemoveDummyStreamLocked();
+ }
+
// Start configuring the streams
ALOGV("%s: Camera %d: Starting stream configuration", __FUNCTION__, mId);
mNeedConfig = false;
- if (config.num_streams > 0) {
+ if (mDummyStreamId == NO_STREAM) {
mStatus = STATUS_CONFIGURED;
} else {
mStatus = STATUS_UNCONFIGURED;
return OK;
}
+status_t Camera3Device::addDummyStreamLocked() {
+ ATRACE_CALL();
+ status_t res;
+
+ if (mDummyStreamId != NO_STREAM) {
+ // Should never be adding a second dummy stream when one is already
+ // active
+ SET_ERR_L("%s: Camera %d: A dummy stream already exists!",
+ __FUNCTION__, mId);
+ return INVALID_OPERATION;
+ }
+
+ ALOGV("%s: Camera %d: Adding a dummy stream", __FUNCTION__, mId);
+
+ sp<Camera3OutputStreamInterface> dummyStream =
+ new Camera3DummyStream(mNextStreamId);
+
+ res = mOutputStreams.add(mNextStreamId, dummyStream);
+ if (res < 0) {
+ SET_ERR_L("Can't add dummy stream to set: %s (%d)", strerror(-res), res);
+ return res;
+ }
+
+ mDummyStreamId = mNextStreamId;
+ mNextStreamId++;
+
+ return OK;
+}
+
+status_t Camera3Device::tryRemoveDummyStreamLocked() {
+ ATRACE_CALL();
+ status_t res;
+
+ if (mDummyStreamId == NO_STREAM) return OK;
+ if (mOutputStreams.size() == 1) return OK;
+
+ ALOGV("%s: Camera %d: Removing the dummy stream", __FUNCTION__, mId);
+
+ // Ok, have a dummy stream and there's at least one other output stream,
+ // so remove the dummy
+
+ sp<Camera3StreamInterface> deletedStream;
+ ssize_t outputStreamIdx = mOutputStreams.indexOfKey(mDummyStreamId);
+ if (outputStreamIdx == NAME_NOT_FOUND) {
+ SET_ERR_L("Dummy stream %d does not appear to exist", mDummyStreamId);
+ return INVALID_OPERATION;
+ }
+
+ deletedStream = mOutputStreams.editValueAt(outputStreamIdx);
+ mOutputStreams.removeItemsAt(outputStreamIdx);
+
+ // Free up the stream endpoint so that it can be used by some other stream
+ res = deletedStream->disconnect();
+ if (res != OK) {
+ SET_ERR_L("Can't disconnect deleted dummy stream %d", mDummyStreamId);
+ // fall through since we want to still list the stream as deleted.
+ }
+ mDeletedStreams.add(deletedStream);
+ mDummyStreamId = NO_STREAM;
+
+ return res;
+}
+
void Camera3Device::setErrorState(const char *fmt, ...) {
Mutex::Autolock l(mLock);
va_list args;
struct RequestTrigger;
// minimal jpeg buffer size: 256KB + blob header
static const ssize_t kMinJpegBufferSize = 256 * 1024 + sizeof(camera3_jpeg_blob);
+ // Constant to use for stream ID when one doesn't exist
+ static const int NO_STREAM = -1;
// A lock to enforce serialization on the input/configure side
// of the public interface.
int mNextStreamId;
bool mNeedConfig;
+ int mDummyStreamId;
+
// Whether to send state updates upstream
// Pause when doing transparent reconfiguration
bool mPauseStateNotify;
status_t configureStreamsLocked();
/**
+ * Add a dummy stream to the current stream set as a workaround for
+ * not allowing 0 streams in the camera HAL spec.
+ */
+ status_t addDummyStreamLocked();
+
+ /**
+ * Remove a dummy stream if the current config includes real streams.
+ */
+ status_t tryRemoveDummyStreamLocked();
+
+ /**
* Set device into an error state due to some fatal failure, and set an
* error message to indicate why. Only the first call's message will be
* used. The message is also sent to the log.
--- /dev/null
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "Camera3-DummyStream"
+#define ATRACE_TAG ATRACE_TAG_CAMERA
+//#define LOG_NDEBUG 0
+
+#include <utils/Log.h>
+#include <utils/Trace.h>
+#include "Camera3DummyStream.h"
+
+namespace android {
+
+namespace camera3 {
+
+Camera3DummyStream::Camera3DummyStream(int id) :
+ Camera3IOStreamBase(id, CAMERA3_STREAM_OUTPUT, DUMMY_WIDTH, DUMMY_HEIGHT,
+ /*maxSize*/0, DUMMY_FORMAT) {
+
+}
+
+Camera3DummyStream::~Camera3DummyStream() {
+
+}
+
+status_t Camera3DummyStream::getBufferLocked(camera3_stream_buffer *buffer) {
+ ATRACE_CALL();
+ ALOGE("%s: Stream %d: Dummy stream cannot produce buffers!", mId);
+ return INVALID_OPERATION;
+}
+
+status_t Camera3DummyStream::returnBufferLocked(
+ const camera3_stream_buffer &buffer,
+ nsecs_t timestamp) {
+ ATRACE_CALL();
+ ALOGE("%s: Stream %d: Dummy stream cannot return buffers!", mId);
+ return INVALID_OPERATION;
+}
+
+status_t Camera3DummyStream::returnBufferCheckedLocked(
+ const camera3_stream_buffer &buffer,
+ nsecs_t timestamp,
+ bool output,
+ /*out*/
+ sp<Fence> *releaseFenceOut) {
+ ATRACE_CALL();
+ ALOGE("%s: Stream %d: Dummy stream cannot return buffers!", mId);
+ return INVALID_OPERATION;
+}
+
+void Camera3DummyStream::dump(int fd, const Vector<String16> &args) const {
+ (void) args;
+ String8 lines;
+ lines.appendFormat(" Stream[%d]: Dummy\n", mId);
+ write(fd, lines.string(), lines.size());
+
+ Camera3IOStreamBase::dump(fd, args);
+}
+
+status_t Camera3DummyStream::setTransform(int transform) {
+ ATRACE_CALL();
+ // Do nothing
+ return OK;
+}
+
+status_t Camera3DummyStream::configureQueueLocked() {
+ // Do nothing
+ return OK;
+}
+
+status_t Camera3DummyStream::disconnectLocked() {
+ mState = (mState == STATE_IN_RECONFIG) ? STATE_IN_CONFIG
+ : STATE_CONSTRUCTED;
+ return OK;
+}
+
+status_t Camera3DummyStream::getEndpointUsage(uint32_t *usage) {
+ *usage = DUMMY_USAGE;
+ return OK;
+}
+
+}; // namespace camera3
+
+}; // namespace android
--- /dev/null
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_SERVERS_CAMERA3_DUMMY_STREAM_H
+#define ANDROID_SERVERS_CAMERA3_DUMMY_STREAM_H
+
+#include <utils/RefBase.h>
+#include <gui/Surface.h>
+
+#include "Camera3Stream.h"
+#include "Camera3IOStreamBase.h"
+#include "Camera3OutputStreamInterface.h"
+
+namespace android {
+namespace camera3 {
+
+/**
+ * A dummy output stream class, to be used as a placeholder when no valid
+ * streams are configured by the client.
+ * This is necessary because camera HAL v3.2 or older disallow configuring
+ * 0 output streams, while the public camera2 API allows for it.
+ */
+class Camera3DummyStream :
+ public Camera3IOStreamBase,
+ public Camera3OutputStreamInterface {
+
+ public:
+ /**
+ * Set up a dummy stream; doesn't actually connect to anything, and uses
+ * a default dummy format and size.
+ */
+ Camera3DummyStream(int id);
+
+ virtual ~Camera3DummyStream();
+
+ /**
+ * Camera3Stream interface
+ */
+
+ virtual void dump(int fd, const Vector<String16> &args) const;
+
+ status_t setTransform(int transform);
+
+ protected:
+
+ /**
+ * Note that we release the lock briefly in this function
+ */
+ virtual status_t returnBufferCheckedLocked(
+ const camera3_stream_buffer &buffer,
+ nsecs_t timestamp,
+ bool output,
+ /*out*/
+ sp<Fence> *releaseFenceOut);
+
+ virtual status_t disconnectLocked();
+
+ private:
+
+ // Default dummy parameters; 320x240 is a required size for all devices,
+ // otherwise act like a SurfaceView would.
+ static const int DUMMY_WIDTH = 320;
+ static const int DUMMY_HEIGHT = 240;
+ static const int DUMMY_FORMAT = HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED;
+ static const uint32_t DUMMY_USAGE = GRALLOC_USAGE_HW_COMPOSER;
+
+ /**
+ * Internal Camera3Stream interface
+ */
+ virtual status_t getBufferLocked(camera3_stream_buffer *buffer);
+ virtual status_t returnBufferLocked(
+ const camera3_stream_buffer &buffer,
+ nsecs_t timestamp);
+
+ virtual status_t configureQueueLocked();
+
+ virtual status_t getEndpointUsage(uint32_t *usage);
+
+}; // class Camera3DummyStream
+
+} // namespace camera3
+
+} // namespace android
+
+#endif
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