1263 lines
38 KiB
C++
1263 lines
38 KiB
C++
/*
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**
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** Copyright (C) 2008, The Android Open Source Project
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** Copyright (C) 2008 HTC Inc.
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**
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** Licensed under the Apache License, Version 2.0 (the "License");
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** you may not use this file except in compliance with the License.
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** You may obtain a copy of the License at
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**
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** http://www.apache.org/licenses/LICENSE-2.0
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**
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** Unless required by applicable law or agreed to in writing, software
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** distributed under the License is distributed on an "AS IS" BASIS,
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** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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** See the License for the specific language governing permissions and
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** limitations under the License.
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*/
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//#define LOG_NDEBUG 0
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#define LOG_TAG "CameraService"
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#include <utils/Log.h>
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#include <binder/IServiceManager.h>
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#include <binder/IPCThreadState.h>
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#include <utils/String16.h>
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#include <utils/Errors.h>
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#include <binder/MemoryBase.h>
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#include <binder/MemoryHeapBase.h>
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#include <ui/ICameraService.h>
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#include <media/mediaplayer.h>
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#include <media/AudioSystem.h>
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#include "CameraService.h"
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#include <cutils/atomic.h>
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namespace android {
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extern "C" {
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#include <stdio.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <pthread.h>
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#include <signal.h>
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}
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// When you enable this, as well as DEBUG_REFS=1 and
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// DEBUG_REFS_ENABLED_BY_DEFAULT=0 in libutils/RefBase.cpp, this will track all
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// references to the CameraService::Client in order to catch the case where the
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// client is being destroyed while a callback from the CameraHardwareInterface
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// is outstanding. This is a serious bug because if we make another call into
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// CameraHardwreInterface that itself triggers a callback, we will deadlock.
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#define DEBUG_CLIENT_REFERENCES 0
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#define PICTURE_TIMEOUT seconds(5)
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#define DEBUG_DUMP_PREVIEW_FRAME_TO_FILE 0 /* n-th frame to write */
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#define DEBUG_DUMP_JPEG_SNAPSHOT_TO_FILE 0
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#define DEBUG_DUMP_YUV_SNAPSHOT_TO_FILE 0
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#define DEBUG_DUMP_POSTVIEW_SNAPSHOT_TO_FILE 0
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#if DEBUG_DUMP_PREVIEW_FRAME_TO_FILE
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static int debug_frame_cnt;
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#endif
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static int getCallingPid() {
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return IPCThreadState::self()->getCallingPid();
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}
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// ----------------------------------------------------------------------------
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void CameraService::instantiate() {
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defaultServiceManager()->addService(
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String16("media.camera"), new CameraService());
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}
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// ----------------------------------------------------------------------------
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CameraService::CameraService() :
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BnCameraService()
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{
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LOGI("CameraService started: pid=%d", getpid());
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mUsers = 0;
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}
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CameraService::~CameraService()
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{
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if (mClient != 0) {
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LOGE("mClient was still connected in destructor!");
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}
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}
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sp<ICamera> CameraService::connect(const sp<ICameraClient>& cameraClient)
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{
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int callingPid = getCallingPid();
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LOGD("CameraService::connect E (pid %d, client %p)", callingPid,
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cameraClient->asBinder().get());
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Mutex::Autolock lock(mServiceLock);
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sp<Client> client;
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if (mClient != 0) {
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sp<Client> currentClient = mClient.promote();
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if (currentClient != 0) {
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sp<ICameraClient> currentCameraClient(currentClient->getCameraClient());
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if (cameraClient->asBinder() == currentCameraClient->asBinder()) {
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// This is the same client reconnecting...
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LOGD("CameraService::connect X (pid %d, same client %p) is reconnecting...",
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callingPid, cameraClient->asBinder().get());
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return currentClient;
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} else {
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// It's another client... reject it
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LOGD("CameraService::connect X (pid %d, new client %p) rejected. "
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"(old pid %d, old client %p)",
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callingPid, cameraClient->asBinder().get(),
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currentClient->mClientPid, currentCameraClient->asBinder().get());
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if (kill(currentClient->mClientPid, 0) == -1 && errno == ESRCH) {
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LOGD("The old client is dead!");
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}
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return client;
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}
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} else {
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// can't promote, the previous client has died...
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LOGD("New client (pid %d) connecting, old reference was dangling...",
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callingPid);
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mClient.clear();
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}
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}
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if (mUsers > 0) {
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LOGD("Still have client, rejected");
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return client;
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}
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// create a new Client object
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client = new Client(this, cameraClient, callingPid);
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mClient = client;
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#if DEBUG_CLIENT_REFERENCES
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// Enable tracking for this object, and track increments and decrements of
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// the refcount.
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client->trackMe(true, true);
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#endif
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LOGD("CameraService::connect X");
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return client;
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}
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void CameraService::removeClient(const sp<ICameraClient>& cameraClient)
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{
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int callingPid = getCallingPid();
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// Declare this outside the lock to make absolutely sure the
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// destructor won't be called with the lock held.
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sp<Client> client;
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Mutex::Autolock lock(mServiceLock);
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if (mClient == 0) {
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// This happens when we have already disconnected.
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LOGD("removeClient (pid %d): already disconnected", callingPid);
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return;
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}
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// Promote mClient. It can fail if we are called from this path:
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// Client::~Client() -> disconnect() -> removeClient().
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client = mClient.promote();
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if (client == 0) {
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LOGD("removeClient (pid %d): no more strong reference", callingPid);
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mClient.clear();
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return;
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}
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if (cameraClient->asBinder() != client->getCameraClient()->asBinder()) {
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// ugh! that's not our client!!
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LOGW("removeClient (pid %d): mClient doesn't match!", callingPid);
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} else {
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// okay, good, forget about mClient
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mClient.clear();
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}
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LOGD("removeClient (pid %d) done", callingPid);
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}
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// The reason we need this count is a new CameraService::connect() request may
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// come in while the previous Client's destructor has not been run or is still
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// running. If the last strong reference of the previous Client is gone but
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// destructor has not been run, we should not allow the new Client to be created
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// because we need to wait for the previous Client to tear down the hardware
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// first.
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void CameraService::incUsers() {
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android_atomic_inc(&mUsers);
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}
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void CameraService::decUsers() {
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android_atomic_dec(&mUsers);
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}
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static sp<MediaPlayer> newMediaPlayer(const char *file)
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{
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sp<MediaPlayer> mp = new MediaPlayer();
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if (mp->setDataSource(file) == NO_ERROR) {
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mp->setAudioStreamType(AudioSystem::ENFORCED_AUDIBLE);
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mp->prepare();
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} else {
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mp.clear();
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LOGE("Failed to load CameraService sounds.");
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}
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return mp;
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}
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CameraService::Client::Client(const sp<CameraService>& cameraService,
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const sp<ICameraClient>& cameraClient, pid_t clientPid)
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{
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int callingPid = getCallingPid();
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LOGD("Client::Client E (pid %d)", callingPid);
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mCameraService = cameraService;
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mCameraClient = cameraClient;
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mClientPid = clientPid;
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mHardware = openCameraHardware();
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mUseOverlay = mHardware->useOverlay();
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mHardware->setCallbacks(notifyCallback,
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dataCallback,
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dataCallbackTimestamp,
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mCameraService.get());
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// Enable zoom, error, and focus messages by default
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mHardware->enableMsgType(CAMERA_MSG_ERROR |
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CAMERA_MSG_ZOOM |
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CAMERA_MSG_FOCUS);
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mMediaPlayerClick = newMediaPlayer("/system/media/audio/ui/camera_click.ogg");
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mMediaPlayerBeep = newMediaPlayer("/system/media/audio/ui/VideoRecord.ogg");
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mOverlayW = 0;
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mOverlayH = 0;
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// Callback is disabled by default
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mPreviewCallbackFlag = FRAME_CALLBACK_FLAG_NOOP;
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cameraService->incUsers();
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LOGD("Client::Client X (pid %d)", callingPid);
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}
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status_t CameraService::Client::checkPid()
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{
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int callingPid = getCallingPid();
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if (mClientPid == callingPid) return NO_ERROR;
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LOGW("Attempt to use locked camera (client %p) from different process "
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" (old pid %d, new pid %d)",
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getCameraClient()->asBinder().get(), mClientPid, callingPid);
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return -EBUSY;
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}
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status_t CameraService::Client::lock()
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{
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int callingPid = getCallingPid();
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LOGD("lock from pid %d (mClientPid %d)", callingPid, mClientPid);
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Mutex::Autolock _l(mLock);
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// lock camera to this client if the the camera is unlocked
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if (mClientPid == 0) {
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mClientPid = callingPid;
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return NO_ERROR;
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}
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// returns NO_ERROR if the client already owns the camera, -EBUSY otherwise
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return checkPid();
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}
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status_t CameraService::Client::unlock()
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{
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int callingPid = getCallingPid();
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LOGD("unlock from pid %d (mClientPid %d)", callingPid, mClientPid);
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Mutex::Autolock _l(mLock);
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// allow anyone to use camera
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status_t result = checkPid();
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if (result == NO_ERROR) {
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mClientPid = 0;
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LOGD("clear mCameraClient (pid %d)", callingPid);
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// we need to remove the reference so that when app goes
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// away, the reference count goes to 0.
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mCameraClient.clear();
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}
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return result;
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}
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status_t CameraService::Client::connect(const sp<ICameraClient>& client)
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{
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int callingPid = getCallingPid();
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// connect a new process to the camera
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LOGD("Client::connect E (pid %d, client %p)", callingPid, client->asBinder().get());
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// I hate this hack, but things get really ugly when the media recorder
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// service is handing back the camera to the app. The ICameraClient
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// destructor will be called during the same IPC, making it look like
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// the remote client is trying to disconnect. This hack temporarily
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// sets the mClientPid to an invalid pid to prevent the hardware from
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// being torn down.
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{
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// hold a reference to the old client or we will deadlock if the client is
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// in the same process and we hold the lock when we remove the reference
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sp<ICameraClient> oldClient;
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{
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Mutex::Autolock _l(mLock);
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if (mClientPid != 0 && checkPid() != NO_ERROR) {
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LOGW("Tried to connect to locked camera (old pid %d, new pid %d)",
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mClientPid, callingPid);
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return -EBUSY;
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}
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oldClient = mCameraClient;
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// did the client actually change?
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if (client->asBinder() == mCameraClient->asBinder()) {
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LOGD("Connect to the same client");
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return NO_ERROR;
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}
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mCameraClient = client;
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mClientPid = -1;
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mPreviewCallbackFlag = FRAME_CALLBACK_FLAG_NOOP;
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LOGD("Connect to the new client (pid %d, client %p)",
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callingPid, mCameraClient->asBinder().get());
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}
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}
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// the old client destructor is called when oldClient goes out of scope
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// now we set the new PID to lock the interface again
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mClientPid = callingPid;
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return NO_ERROR;
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}
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#if HAVE_ANDROID_OS
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static void *unregister_surface(void *arg)
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{
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ISurface *surface = (ISurface *)arg;
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surface->unregisterBuffers();
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IPCThreadState::self()->flushCommands();
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return NULL;
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}
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#endif
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CameraService::Client::~Client()
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{
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int callingPid = getCallingPid();
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// tear down client
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LOGD("Client::~Client E (pid %d, client %p)",
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callingPid, getCameraClient()->asBinder().get());
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if (mSurface != 0 && !mUseOverlay) {
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#if HAVE_ANDROID_OS
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pthread_t thr;
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// We unregister the buffers in a different thread because binder does
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// not let us make sychronous transactions in a binder destructor (that
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// is, upon our reaching a refcount of zero.)
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pthread_create(&thr, NULL,
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unregister_surface,
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mSurface.get());
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pthread_join(thr, NULL);
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#else
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mSurface->unregisterBuffers();
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#endif
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}
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if (mMediaPlayerBeep.get() != NULL) {
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mMediaPlayerBeep->disconnect();
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mMediaPlayerBeep.clear();
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}
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if (mMediaPlayerClick.get() != NULL) {
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mMediaPlayerClick->disconnect();
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mMediaPlayerClick.clear();
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}
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// make sure we tear down the hardware
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mClientPid = callingPid;
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disconnect();
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LOGD("Client::~Client X (pid %d)", mClientPid);
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}
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void CameraService::Client::disconnect()
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{
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int callingPid = getCallingPid();
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LOGD("Client::disconnect() E (pid %d client %p)",
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callingPid, getCameraClient()->asBinder().get());
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Mutex::Autolock lock(mLock);
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if (mClientPid <= 0) {
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LOGD("camera is unlocked (mClientPid = %d), don't tear down hardware", mClientPid);
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return;
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}
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if (checkPid() != NO_ERROR) {
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LOGD("Different client - don't disconnect");
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return;
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}
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// Make sure disconnect() is done once and once only, whether it is called
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// from the user directly, or called by the destructor.
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if (mHardware == 0) return;
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LOGD("hardware teardown");
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// Before destroying mHardware, we must make sure it's in the
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// idle state.
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mHardware->stopPreview();
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// Cancel all picture callbacks.
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mHardware->disableMsgType(CAMERA_MSG_SHUTTER |
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CAMERA_MSG_POSTVIEW_FRAME |
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CAMERA_MSG_RAW_IMAGE |
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CAMERA_MSG_COMPRESSED_IMAGE);
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mHardware->cancelPicture();
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// Turn off remaining messages.
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mHardware->disableMsgType(CAMERA_MSG_ALL_MSGS);
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// Release the hardware resources.
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mHardware->release();
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// Release the held overlay resources.
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if (mUseOverlay)
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{
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mOverlayRef = 0;
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}
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mHardware.clear();
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mCameraService->removeClient(mCameraClient);
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mCameraService->decUsers();
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LOGD("Client::disconnect() X (pid %d)", callingPid);
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}
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// pass the buffered ISurface to the camera service
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status_t CameraService::Client::setPreviewDisplay(const sp<ISurface>& surface)
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{
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LOGD("setPreviewDisplay(%p) (pid %d)",
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((surface == NULL) ? NULL : surface.get()), getCallingPid());
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Mutex::Autolock lock(mLock);
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status_t result = checkPid();
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if (result != NO_ERROR) return result;
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Mutex::Autolock surfaceLock(mSurfaceLock);
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result = NO_ERROR;
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// asBinder() is safe on NULL (returns NULL)
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if (surface->asBinder() != mSurface->asBinder()) {
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if (mSurface != 0) {
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LOGD("clearing old preview surface %p", mSurface.get());
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if ( !mUseOverlay)
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{
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mSurface->unregisterBuffers();
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}
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else
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{
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// Force the destruction of any previous overlay
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sp<Overlay> dummy;
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mHardware->setOverlay( dummy );
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}
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}
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mSurface = surface;
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mOverlayRef = 0;
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// If preview has been already started, set overlay or register preview
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// buffers now.
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if (mHardware->previewEnabled()) {
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if (mUseOverlay) {
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result = setOverlay();
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} else if (mSurface != 0) {
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result = registerPreviewBuffers();
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}
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}
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}
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return result;
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}
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// set the preview callback flag to affect how the received frames from
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// preview are handled.
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void CameraService::Client::setPreviewCallbackFlag(int callback_flag)
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{
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LOGV("setPreviewCallbackFlag (pid %d)", getCallingPid());
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Mutex::Autolock lock(mLock);
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if (checkPid() != NO_ERROR) return;
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mPreviewCallbackFlag = callback_flag;
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if(mUseOverlay) {
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if(mPreviewCallbackFlag & FRAME_CALLBACK_FLAG_ENABLE_MASK)
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mHardware->enableMsgType(CAMERA_MSG_PREVIEW_FRAME);
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else
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mHardware->disableMsgType(CAMERA_MSG_PREVIEW_FRAME);
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}
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}
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// start preview mode
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status_t CameraService::Client::startCameraMode(camera_mode mode)
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{
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int callingPid = getCallingPid();
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LOGD("startCameraMode(%d) (pid %d)", mode, callingPid);
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/* we cannot call into mHardware with mLock held because
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* mHardware has callbacks onto us which acquire this lock
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*/
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Mutex::Autolock lock(mLock);
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status_t result = checkPid();
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if (result != NO_ERROR) return result;
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if (mHardware == 0) {
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LOGE("mHardware is NULL, returning.");
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return INVALID_OPERATION;
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}
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switch(mode) {
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case CAMERA_RECORDING_MODE:
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if (mSurface == 0) {
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LOGE("setPreviewDisplay must be called before startRecordingMode.");
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return INVALID_OPERATION;
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}
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return startRecordingMode();
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default: // CAMERA_PREVIEW_MODE
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if (mSurface == 0) {
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LOGD("mSurface is not set yet.");
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}
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return startPreviewMode();
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}
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}
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status_t CameraService::Client::startRecordingMode()
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{
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LOGD("startRecordingMode (pid %d)", getCallingPid());
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status_t ret = UNKNOWN_ERROR;
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|
|
// if preview has not been started, start preview first
|
|
if (!mHardware->previewEnabled()) {
|
|
ret = startPreviewMode();
|
|
if (ret != NO_ERROR) {
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
// if recording has been enabled, nothing needs to be done
|
|
if (mHardware->recordingEnabled()) {
|
|
return NO_ERROR;
|
|
}
|
|
|
|
// start recording mode
|
|
ret = mHardware->startRecording();
|
|
if (ret != NO_ERROR) {
|
|
LOGE("mHardware->startRecording() failed with status %d", ret);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
status_t CameraService::Client::setOverlay()
|
|
{
|
|
LOGD("setOverlay");
|
|
int w, h;
|
|
CameraParameters params(mHardware->getParameters());
|
|
params.getPreviewSize(&w, &h);
|
|
|
|
if ( w != mOverlayW || h != mOverlayH )
|
|
{
|
|
// Force the destruction of any previous overlay
|
|
sp<Overlay> dummy;
|
|
mHardware->setOverlay( dummy );
|
|
mOverlayRef = 0;
|
|
}
|
|
|
|
status_t ret = NO_ERROR;
|
|
if (mSurface != 0) {
|
|
if (mOverlayRef.get() == NULL) {
|
|
mOverlayRef = mSurface->createOverlay(w, h, OVERLAY_FORMAT_DEFAULT);
|
|
if ( mOverlayRef.get() == NULL )
|
|
{
|
|
LOGE("Overlay Creation Failed!");
|
|
return -EINVAL;
|
|
}
|
|
ret = mHardware->setOverlay(new Overlay(mOverlayRef));
|
|
}
|
|
} else {
|
|
ret = mHardware->setOverlay(NULL);
|
|
}
|
|
if (ret != NO_ERROR) {
|
|
LOGE("mHardware->setOverlay() failed with status %d\n", ret);
|
|
}
|
|
|
|
mOverlayW = w;
|
|
mOverlayH = h;
|
|
|
|
return ret;
|
|
}
|
|
|
|
status_t CameraService::Client::registerPreviewBuffers()
|
|
{
|
|
int w, h;
|
|
CameraParameters params(mHardware->getParameters());
|
|
params.getPreviewSize(&w, &h);
|
|
|
|
uint32_t transform = 0;
|
|
if (params.getOrientation() ==
|
|
CameraParameters::CAMERA_ORIENTATION_PORTRAIT) {
|
|
LOGV("portrait mode");
|
|
transform = ISurface::BufferHeap::ROT_90;
|
|
}
|
|
ISurface::BufferHeap buffers(w, h, w, h,
|
|
PIXEL_FORMAT_YCbCr_420_SP,
|
|
transform,
|
|
0,
|
|
mHardware->getPreviewHeap());
|
|
|
|
status_t ret = mSurface->registerBuffers(buffers);
|
|
if (ret != NO_ERROR) {
|
|
LOGE("registerBuffers failed with status %d", ret);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
status_t CameraService::Client::startPreviewMode()
|
|
{
|
|
LOGD("startPreviewMode (pid %d)", getCallingPid());
|
|
|
|
// if preview has been enabled, nothing needs to be done
|
|
if (mHardware->previewEnabled()) {
|
|
return NO_ERROR;
|
|
}
|
|
|
|
// start preview mode
|
|
#if DEBUG_DUMP_PREVIEW_FRAME_TO_FILE
|
|
debug_frame_cnt = 0;
|
|
#endif
|
|
status_t ret = NO_ERROR;
|
|
|
|
if (mUseOverlay) {
|
|
// If preview display has been set, set overlay now.
|
|
if (mSurface != 0) {
|
|
ret = setOverlay();
|
|
}
|
|
if (ret != NO_ERROR) return ret;
|
|
ret = mHardware->startPreview();
|
|
} else {
|
|
mHardware->enableMsgType(CAMERA_MSG_PREVIEW_FRAME);
|
|
ret = mHardware->startPreview();
|
|
if (ret != NO_ERROR) return ret;
|
|
// If preview display has been set, register preview buffers now.
|
|
if (mSurface != 0) {
|
|
// Unregister here because the surface registered with raw heap.
|
|
mSurface->unregisterBuffers();
|
|
ret = registerPreviewBuffers();
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
status_t CameraService::Client::startPreview()
|
|
{
|
|
LOGD("startPreview (pid %d)", getCallingPid());
|
|
|
|
return startCameraMode(CAMERA_PREVIEW_MODE);
|
|
}
|
|
|
|
status_t CameraService::Client::startRecording()
|
|
{
|
|
LOGD("startRecording (pid %d)", getCallingPid());
|
|
|
|
if (mMediaPlayerBeep.get() != NULL) {
|
|
mMediaPlayerBeep->seekTo(0);
|
|
mMediaPlayerBeep->start();
|
|
}
|
|
|
|
mHardware->enableMsgType(CAMERA_MSG_VIDEO_FRAME);
|
|
|
|
return startCameraMode(CAMERA_RECORDING_MODE);
|
|
}
|
|
|
|
// stop preview mode
|
|
void CameraService::Client::stopPreview()
|
|
{
|
|
LOGD("stopPreview (pid %d)", getCallingPid());
|
|
|
|
Mutex::Autolock lock(mLock);
|
|
if (checkPid() != NO_ERROR) return;
|
|
|
|
if (mHardware == 0) {
|
|
LOGE("mHardware is NULL, returning.");
|
|
return;
|
|
}
|
|
|
|
mHardware->stopPreview();
|
|
mHardware->disableMsgType(CAMERA_MSG_PREVIEW_FRAME);
|
|
LOGD("stopPreview(), hardware stopped OK");
|
|
|
|
if (mSurface != 0 && !mUseOverlay) {
|
|
mSurface->unregisterBuffers();
|
|
}
|
|
mPreviewBuffer.clear();
|
|
}
|
|
|
|
// stop recording mode
|
|
void CameraService::Client::stopRecording()
|
|
{
|
|
LOGD("stopRecording (pid %d)", getCallingPid());
|
|
|
|
Mutex::Autolock lock(mLock);
|
|
if (checkPid() != NO_ERROR) return;
|
|
|
|
if (mHardware == 0) {
|
|
LOGE("mHardware is NULL, returning.");
|
|
return;
|
|
}
|
|
|
|
if (mMediaPlayerBeep.get() != NULL) {
|
|
mMediaPlayerBeep->seekTo(0);
|
|
mMediaPlayerBeep->start();
|
|
}
|
|
|
|
mHardware->stopRecording();
|
|
mHardware->disableMsgType(CAMERA_MSG_VIDEO_FRAME);
|
|
LOGD("stopRecording(), hardware stopped OK");
|
|
|
|
mPreviewBuffer.clear();
|
|
}
|
|
|
|
// release a recording frame
|
|
void CameraService::Client::releaseRecordingFrame(const sp<IMemory>& mem)
|
|
{
|
|
Mutex::Autolock lock(mLock);
|
|
if (checkPid() != NO_ERROR) return;
|
|
|
|
if (mHardware == 0) {
|
|
LOGE("mHardware is NULL, returning.");
|
|
return;
|
|
}
|
|
|
|
mHardware->releaseRecordingFrame(mem);
|
|
}
|
|
|
|
bool CameraService::Client::previewEnabled()
|
|
{
|
|
Mutex::Autolock lock(mLock);
|
|
if (mHardware == 0) return false;
|
|
return mHardware->previewEnabled();
|
|
}
|
|
|
|
bool CameraService::Client::recordingEnabled()
|
|
{
|
|
Mutex::Autolock lock(mLock);
|
|
if (mHardware == 0) return false;
|
|
return mHardware->recordingEnabled();
|
|
}
|
|
|
|
// Safely retrieves a strong pointer to the client during a hardware callback.
|
|
sp<CameraService::Client> CameraService::Client::getClientFromCookie(void* user)
|
|
{
|
|
sp<Client> client = 0;
|
|
CameraService *service = static_cast<CameraService*>(user);
|
|
if (service != NULL) {
|
|
Mutex::Autolock ourLock(service->mServiceLock);
|
|
if (service->mClient != 0) {
|
|
client = service->mClient.promote();
|
|
if (client == 0) {
|
|
LOGE("getClientFromCookie: client appears to have died");
|
|
service->mClient.clear();
|
|
}
|
|
} else {
|
|
LOGE("getClientFromCookie: got callback but client was NULL");
|
|
}
|
|
}
|
|
return client;
|
|
}
|
|
|
|
|
|
#if DEBUG_DUMP_JPEG_SNAPSHOT_TO_FILE || \
|
|
DEBUG_DUMP_YUV_SNAPSHOT_TO_FILE || \
|
|
DEBUG_DUMP_PREVIEW_FRAME_TO_FILE
|
|
static void dump_to_file(const char *fname,
|
|
uint8_t *buf, uint32_t size)
|
|
{
|
|
int nw, cnt = 0;
|
|
uint32_t written = 0;
|
|
|
|
LOGD("opening file [%s]\n", fname);
|
|
int fd = open(fname, O_RDWR | O_CREAT);
|
|
if (fd < 0) {
|
|
LOGE("failed to create file [%s]: %s", fname, strerror(errno));
|
|
return;
|
|
}
|
|
|
|
LOGD("writing %d bytes to file [%s]\n", size, fname);
|
|
while (written < size) {
|
|
nw = ::write(fd,
|
|
buf + written,
|
|
size - written);
|
|
if (nw < 0) {
|
|
LOGE("failed to write to file [%s]: %s",
|
|
fname, strerror(errno));
|
|
break;
|
|
}
|
|
written += nw;
|
|
cnt++;
|
|
}
|
|
LOGD("done writing %d bytes to file [%s] in %d passes\n",
|
|
size, fname, cnt);
|
|
::close(fd);
|
|
}
|
|
#endif
|
|
|
|
status_t CameraService::Client::autoFocus()
|
|
{
|
|
LOGD("autoFocus (pid %d)", getCallingPid());
|
|
|
|
Mutex::Autolock lock(mLock);
|
|
status_t result = checkPid();
|
|
if (result != NO_ERROR) return result;
|
|
|
|
if (mHardware == 0) {
|
|
LOGE("mHardware is NULL, returning.");
|
|
return INVALID_OPERATION;
|
|
}
|
|
|
|
return mHardware->autoFocus();
|
|
}
|
|
|
|
status_t CameraService::Client::cancelAutoFocus()
|
|
{
|
|
LOGD("cancelAutoFocus (pid %d)", getCallingPid());
|
|
|
|
Mutex::Autolock lock(mLock);
|
|
status_t result = checkPid();
|
|
if (result != NO_ERROR) return result;
|
|
|
|
if (mHardware == 0) {
|
|
LOGE("mHardware is NULL, returning.");
|
|
return INVALID_OPERATION;
|
|
}
|
|
|
|
return mHardware->cancelAutoFocus();
|
|
}
|
|
|
|
// take a picture - image is returned in callback
|
|
status_t CameraService::Client::takePicture()
|
|
{
|
|
LOGD("takePicture (pid %d)", getCallingPid());
|
|
|
|
Mutex::Autolock lock(mLock);
|
|
status_t result = checkPid();
|
|
if (result != NO_ERROR) return result;
|
|
|
|
if (mHardware == 0) {
|
|
LOGE("mHardware is NULL, returning.");
|
|
return INVALID_OPERATION;
|
|
}
|
|
|
|
mHardware->enableMsgType(CAMERA_MSG_SHUTTER |
|
|
CAMERA_MSG_POSTVIEW_FRAME |
|
|
CAMERA_MSG_RAW_IMAGE |
|
|
CAMERA_MSG_COMPRESSED_IMAGE);
|
|
|
|
return mHardware->takePicture();
|
|
}
|
|
|
|
// snapshot taken
|
|
void CameraService::Client::handleShutter()
|
|
{
|
|
// Play shutter sound.
|
|
if (mMediaPlayerClick.get() != NULL) {
|
|
mMediaPlayerClick->seekTo(0);
|
|
mMediaPlayerClick->start();
|
|
}
|
|
|
|
// Screen goes black after the buffer is unregistered.
|
|
if (mSurface != 0 && !mUseOverlay) {
|
|
mSurface->unregisterBuffers();
|
|
}
|
|
|
|
mCameraClient->notifyCallback(CAMERA_MSG_SHUTTER, 0, 0);
|
|
mHardware->disableMsgType(CAMERA_MSG_SHUTTER);
|
|
|
|
// It takes some time before yuvPicture callback to be called.
|
|
// Register the buffer for raw image here to reduce latency.
|
|
if (mSurface != 0 && !mUseOverlay) {
|
|
int w, h;
|
|
CameraParameters params(mHardware->getParameters());
|
|
params.getPictureSize(&w, &h);
|
|
uint32_t transform = 0;
|
|
if (params.getOrientation() == CameraParameters::CAMERA_ORIENTATION_PORTRAIT) {
|
|
LOGV("portrait mode");
|
|
transform = ISurface::BufferHeap::ROT_90;
|
|
}
|
|
ISurface::BufferHeap buffers(w, h, w, h,
|
|
PIXEL_FORMAT_YCbCr_420_SP, transform, 0, mHardware->getRawHeap());
|
|
|
|
mSurface->registerBuffers(buffers);
|
|
}
|
|
}
|
|
|
|
// preview callback - frame buffer update
|
|
void CameraService::Client::handlePreviewData(const sp<IMemory>& mem)
|
|
{
|
|
ssize_t offset;
|
|
size_t size;
|
|
sp<IMemoryHeap> heap = mem->getMemory(&offset, &size);
|
|
|
|
#if DEBUG_HEAP_LEAKS && 0 // debugging
|
|
if (gWeakHeap == NULL) {
|
|
if (gWeakHeap != heap) {
|
|
LOGD("SETTING PREVIEW HEAP");
|
|
heap->trackMe(true, true);
|
|
gWeakHeap = heap;
|
|
}
|
|
}
|
|
#endif
|
|
#if DEBUG_DUMP_PREVIEW_FRAME_TO_FILE
|
|
{
|
|
if (debug_frame_cnt++ == DEBUG_DUMP_PREVIEW_FRAME_TO_FILE) {
|
|
dump_to_file("/data/preview.yuv",
|
|
(uint8_t *)heap->base() + offset, size);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
if (!mUseOverlay)
|
|
{
|
|
Mutex::Autolock surfaceLock(mSurfaceLock);
|
|
if (mSurface != NULL) {
|
|
mSurface->postBuffer(offset);
|
|
}
|
|
}
|
|
|
|
// Is the callback enabled or not?
|
|
if (!(mPreviewCallbackFlag & FRAME_CALLBACK_FLAG_ENABLE_MASK)) {
|
|
// If the enable bit is off, the copy-out and one-shot bits are ignored
|
|
LOGV("frame callback is diabled");
|
|
return;
|
|
}
|
|
|
|
// Is the received frame copied out or not?
|
|
if (mPreviewCallbackFlag & FRAME_CALLBACK_FLAG_COPY_OUT_MASK) {
|
|
LOGV("frame is copied out");
|
|
copyFrameAndPostCopiedFrame(heap, offset, size);
|
|
} else {
|
|
LOGV("frame is directly sent out without copying");
|
|
mCameraClient->dataCallback(CAMERA_MSG_PREVIEW_FRAME, mem);
|
|
}
|
|
|
|
// Is this is one-shot only?
|
|
if (mPreviewCallbackFlag & FRAME_CALLBACK_FLAG_ONE_SHOT_MASK) {
|
|
LOGV("One-shot only, thus clear the bits and disable frame callback");
|
|
mPreviewCallbackFlag &= ~(FRAME_CALLBACK_FLAG_ONE_SHOT_MASK |
|
|
FRAME_CALLBACK_FLAG_COPY_OUT_MASK |
|
|
FRAME_CALLBACK_FLAG_ENABLE_MASK);
|
|
if (mUseOverlay)
|
|
mHardware->disableMsgType(CAMERA_MSG_PREVIEW_FRAME);
|
|
}
|
|
}
|
|
|
|
// picture callback - postview image ready
|
|
void CameraService::Client::handlePostview(const sp<IMemory>& mem)
|
|
{
|
|
#if DEBUG_DUMP_POSTVIEW_SNAPSHOT_TO_FILE // for testing pursposes only
|
|
{
|
|
ssize_t offset;
|
|
size_t size;
|
|
sp<IMemoryHeap> heap = mem->getMemory(&offset, &size);
|
|
dump_to_file("/data/postview.yuv",
|
|
(uint8_t *)heap->base() + offset, size);
|
|
}
|
|
#endif
|
|
|
|
mCameraClient->dataCallback(CAMERA_MSG_POSTVIEW_FRAME, mem);
|
|
mHardware->disableMsgType(CAMERA_MSG_POSTVIEW_FRAME);
|
|
}
|
|
|
|
// picture callback - raw image ready
|
|
void CameraService::Client::handleRawPicture(const sp<IMemory>& mem)
|
|
{
|
|
ssize_t offset;
|
|
size_t size;
|
|
sp<IMemoryHeap> heap = mem->getMemory(&offset, &size);
|
|
#if DEBUG_HEAP_LEAKS && 0 // debugging
|
|
gWeakHeap = heap; // debugging
|
|
#endif
|
|
|
|
//LOGV("handleRawPicture(%d, %d)", offset, size);
|
|
#if DEBUG_DUMP_YUV_SNAPSHOT_TO_FILE // for testing pursposes only
|
|
dump_to_file("/data/photo.yuv",
|
|
(uint8_t *)heap->base() + offset, size);
|
|
#endif
|
|
|
|
// Put the YUV version of the snapshot in the preview display.
|
|
if (mSurface != 0 && !mUseOverlay) {
|
|
mSurface->postBuffer(offset);
|
|
}
|
|
|
|
mCameraClient->dataCallback(CAMERA_MSG_RAW_IMAGE, mem);
|
|
mHardware->disableMsgType(CAMERA_MSG_RAW_IMAGE);
|
|
}
|
|
|
|
// picture callback - compressed picture ready
|
|
void CameraService::Client::handleCompressedPicture(const sp<IMemory>& mem)
|
|
{
|
|
#if DEBUG_DUMP_JPEG_SNAPSHOT_TO_FILE // for testing pursposes only
|
|
{
|
|
ssize_t offset;
|
|
size_t size;
|
|
sp<IMemoryHeap> heap = mem->getMemory(&offset, &size);
|
|
dump_to_file("/data/photo.jpg",
|
|
(uint8_t *)heap->base() + offset, size);
|
|
}
|
|
#endif
|
|
|
|
mCameraClient->dataCallback(CAMERA_MSG_COMPRESSED_IMAGE, mem);
|
|
mHardware->disableMsgType(CAMERA_MSG_COMPRESSED_IMAGE);
|
|
}
|
|
|
|
void CameraService::Client::notifyCallback(int32_t msgType, int32_t ext1, int32_t ext2, void* user)
|
|
{
|
|
LOGV("notifyCallback(%d)", msgType);
|
|
|
|
sp<Client> client = getClientFromCookie(user);
|
|
if (client == 0) {
|
|
return;
|
|
}
|
|
|
|
switch (msgType) {
|
|
case CAMERA_MSG_SHUTTER:
|
|
client->handleShutter();
|
|
break;
|
|
default:
|
|
client->mCameraClient->notifyCallback(msgType, ext1, ext2);
|
|
break;
|
|
}
|
|
|
|
#if DEBUG_CLIENT_REFERENCES
|
|
if (client->getStrongCount() == 1) {
|
|
LOGE("++++++++++++++++ (NOTIFY CALLBACK) THIS WILL CAUSE A LOCKUP!");
|
|
client->printRefs();
|
|
}
|
|
#endif
|
|
}
|
|
|
|
void CameraService::Client::dataCallback(int32_t msgType, const sp<IMemory>& dataPtr, void* user)
|
|
{
|
|
LOGV("dataCallback(%d)", msgType);
|
|
|
|
sp<Client> client = getClientFromCookie(user);
|
|
if (client == 0) {
|
|
return;
|
|
}
|
|
|
|
if (dataPtr == NULL) {
|
|
LOGE("Null data returned in data callback");
|
|
client->mCameraClient->notifyCallback(CAMERA_MSG_ERROR, UNKNOWN_ERROR, 0);
|
|
client->mCameraClient->dataCallback(msgType, NULL);
|
|
return;
|
|
}
|
|
|
|
switch (msgType) {
|
|
case CAMERA_MSG_PREVIEW_FRAME:
|
|
client->handlePreviewData(dataPtr);
|
|
break;
|
|
case CAMERA_MSG_POSTVIEW_FRAME:
|
|
client->handlePostview(dataPtr);
|
|
break;
|
|
case CAMERA_MSG_RAW_IMAGE:
|
|
client->handleRawPicture(dataPtr);
|
|
break;
|
|
case CAMERA_MSG_COMPRESSED_IMAGE:
|
|
client->handleCompressedPicture(dataPtr);
|
|
break;
|
|
default:
|
|
client->mCameraClient->dataCallback(msgType, dataPtr);
|
|
break;
|
|
}
|
|
|
|
#if DEBUG_CLIENT_REFERENCES
|
|
if (client->getStrongCount() == 1) {
|
|
LOGE("++++++++++++++++ (DATA CALLBACK) THIS WILL CAUSE A LOCKUP!");
|
|
client->printRefs();
|
|
}
|
|
#endif
|
|
}
|
|
|
|
void CameraService::Client::dataCallbackTimestamp(nsecs_t timestamp, int32_t msgType,
|
|
const sp<IMemory>& dataPtr, void* user)
|
|
{
|
|
LOGV("dataCallbackTimestamp(%d)", msgType);
|
|
|
|
sp<Client> client = getClientFromCookie(user);
|
|
if (client == 0) {
|
|
return;
|
|
}
|
|
|
|
if (dataPtr == NULL) {
|
|
LOGE("Null data returned in data with timestamp callback");
|
|
client->mCameraClient->notifyCallback(CAMERA_MSG_ERROR, UNKNOWN_ERROR, 0);
|
|
client->mCameraClient->dataCallbackTimestamp(0, msgType, NULL);
|
|
return;
|
|
}
|
|
|
|
client->mCameraClient->dataCallbackTimestamp(timestamp, msgType, dataPtr);
|
|
|
|
#if DEBUG_CLIENT_REFERENCES
|
|
if (client->getStrongCount() == 1) {
|
|
LOGE("++++++++++++++++ (DATA CALLBACK TIMESTAMP) THIS WILL CAUSE A LOCKUP!");
|
|
client->printRefs();
|
|
}
|
|
#endif
|
|
}
|
|
|
|
// set preview/capture parameters - key/value pairs
|
|
status_t CameraService::Client::setParameters(const String8& params)
|
|
{
|
|
LOGD("setParameters(%s)", params.string());
|
|
|
|
Mutex::Autolock lock(mLock);
|
|
status_t result = checkPid();
|
|
if (result != NO_ERROR) return result;
|
|
|
|
if (mHardware == 0) {
|
|
LOGE("mHardware is NULL, returning.");
|
|
return INVALID_OPERATION;
|
|
}
|
|
|
|
CameraParameters p(params);
|
|
return mHardware->setParameters(p);
|
|
}
|
|
|
|
// get preview/capture parameters - key/value pairs
|
|
String8 CameraService::Client::getParameters() const
|
|
{
|
|
Mutex::Autolock lock(mLock);
|
|
|
|
if (mHardware == 0) {
|
|
LOGE("mHardware is NULL, returning.");
|
|
return String8();
|
|
}
|
|
|
|
String8 params(mHardware->getParameters().flatten());
|
|
LOGD("getParameters(%s)", params.string());
|
|
return params;
|
|
}
|
|
|
|
void CameraService::Client::copyFrameAndPostCopiedFrame(sp<IMemoryHeap> heap, size_t offset, size_t size)
|
|
{
|
|
LOGV("copyFrameAndPostCopiedFrame");
|
|
// It is necessary to copy out of pmem before sending this to
|
|
// the callback. For efficiency, reuse the same MemoryHeapBase
|
|
// provided it's big enough. Don't allocate the memory or
|
|
// perform the copy if there's no callback.
|
|
if (mPreviewBuffer == 0) {
|
|
mPreviewBuffer = new MemoryHeapBase(size, 0, NULL);
|
|
} else if (size > mPreviewBuffer->virtualSize()) {
|
|
mPreviewBuffer.clear();
|
|
mPreviewBuffer = new MemoryHeapBase(size, 0, NULL);
|
|
if (mPreviewBuffer == 0) {
|
|
LOGE("failed to allocate space for preview buffer");
|
|
return;
|
|
}
|
|
}
|
|
memcpy(mPreviewBuffer->base(),
|
|
(uint8_t *)heap->base() + offset, size);
|
|
|
|
sp<MemoryBase> frame = new MemoryBase(mPreviewBuffer, 0, size);
|
|
if (frame == 0) {
|
|
LOGE("failed to allocate space for frame callback");
|
|
return;
|
|
}
|
|
mCameraClient->dataCallback(CAMERA_MSG_PREVIEW_FRAME, frame);
|
|
}
|
|
|
|
status_t CameraService::dump(int fd, const Vector<String16>& args)
|
|
{
|
|
const size_t SIZE = 256;
|
|
char buffer[SIZE];
|
|
String8 result;
|
|
if (checkCallingPermission(String16("android.permission.DUMP")) == false) {
|
|
snprintf(buffer, SIZE, "Permission Denial: "
|
|
"can't dump CameraService from pid=%d, uid=%d\n",
|
|
getCallingPid(),
|
|
IPCThreadState::self()->getCallingUid());
|
|
result.append(buffer);
|
|
write(fd, result.string(), result.size());
|
|
} else {
|
|
AutoMutex lock(&mServiceLock);
|
|
if (mClient != 0) {
|
|
sp<Client> currentClient = mClient.promote();
|
|
sprintf(buffer, "Client (%p) PID: %d\n",
|
|
currentClient->getCameraClient()->asBinder().get(),
|
|
currentClient->mClientPid);
|
|
result.append(buffer);
|
|
write(fd, result.string(), result.size());
|
|
currentClient->mHardware->dump(fd, args);
|
|
} else {
|
|
result.append("No camera client yet.\n");
|
|
write(fd, result.string(), result.size());
|
|
}
|
|
}
|
|
return NO_ERROR;
|
|
}
|
|
|
|
|
|
status_t CameraService::onTransact(
|
|
uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
|
|
{
|
|
// permission checks...
|
|
switch (code) {
|
|
case BnCameraService::CONNECT:
|
|
IPCThreadState* ipc = IPCThreadState::self();
|
|
const int pid = ipc->getCallingPid();
|
|
const int self_pid = getpid();
|
|
if (pid != self_pid) {
|
|
// we're called from a different process, do the real check
|
|
if (!checkCallingPermission(
|
|
String16("android.permission.CAMERA")))
|
|
{
|
|
const int uid = ipc->getCallingUid();
|
|
LOGE("Permission Denial: "
|
|
"can't use the camera pid=%d, uid=%d", pid, uid);
|
|
return PERMISSION_DENIED;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
|
|
status_t err = BnCameraService::onTransact(code, data, reply, flags);
|
|
|
|
#if DEBUG_HEAP_LEAKS
|
|
LOGD("+++ onTransact err %d code %d", err, code);
|
|
|
|
if (err == UNKNOWN_TRANSACTION || err == PERMISSION_DENIED) {
|
|
// the 'service' command interrogates this binder for its name, and then supplies it
|
|
// even for the debugging commands. that means we need to check for it here, using
|
|
// ISurfaceComposer (since we delegated the INTERFACE_TRANSACTION handling to
|
|
// BnSurfaceComposer before falling through to this code).
|
|
|
|
LOGD("+++ onTransact code %d", code);
|
|
|
|
CHECK_INTERFACE(ICameraService, data, reply);
|
|
|
|
switch(code) {
|
|
case 1000:
|
|
{
|
|
if (gWeakHeap != 0) {
|
|
sp<IMemoryHeap> h = gWeakHeap.promote();
|
|
IMemoryHeap *p = gWeakHeap.unsafe_get();
|
|
LOGD("CHECKING WEAK REFERENCE %p (%p)", h.get(), p);
|
|
if (h != 0)
|
|
h->printRefs();
|
|
bool attempt_to_delete = data.readInt32() == 1;
|
|
if (attempt_to_delete) {
|
|
// NOT SAFE!
|
|
LOGD("DELETING WEAK REFERENCE %p (%p)", h.get(), p);
|
|
if (p) delete p;
|
|
}
|
|
return NO_ERROR;
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
#endif // DEBUG_HEAP_LEAKS
|
|
|
|
return err;
|
|
}
|
|
|
|
}; // namespace android
|