Camera: QCOM legacy definitions,HTC cam switch,NO_UPDATE_PREVIEW

Updating Camera parameters, and service with several
compatibility patches:

1., QCOM legacy CameraParameters and functions:
Adding these will make ICS qcomm camera blobs work on JB 4.2.
Use BOARD_USES_QCOM_LEGACY_CAM_PARAMS := true in BoardConfig
to use this.

Also fixes the problem of legacy qcom
camera blobs with recent libcameraservice QCOM_HARDWARE changes,
where the orientation is messed up on first
preview: the fix is leaving out setPreviewWindow(window) for
legacy qcomm cam blobs.

2., Also adding NO_UPDATE_PREVIEW flag for legacy purposes.

3., Adding adding the set orientation patch:
Always set buffers orientation when setting the qcom camera preview window
Fixes the rotated preview on TouchPad
https://github.com/CyanogenMod/android_frameworks_base/commit/1a8e41a3c7434737db89b604352575f8b3109e7a

4., camera: Full support for HTC camera switch

5., Adding more parameters for HTC Explorer

Change-Id: I2bfc72b8ef027665356788f1db7f96b31d037dbe

3 files changed, 39 insertions, 0 deletions

diff --git a/services/camera/libcameraservice/Android.mk b/services/camera/libcameraservice/Android.mk
index eff47c8..3e2ac14 100644
--- a/services/camera/libcameraservice/Android.mk
+++ b/services/camera/libcameraservice/Android.mk
@@ -40,6 +40,14 @@ LOCAL_C_INCLUDES += \
     system/media/camera/include \
     external/jpeg
 
+ifeq ($(BOARD_USES_QCOM_LEGACY_CAM_PARAMS),true)
+    LOCAL_CFLAGS += -DQCOM_LEGACY_CAM_PARAMS
+endif
+
+ifeq ($(BOARD_HAVE_HTC_FFC), true)
+LOCAL_CFLAGS += -DBOARD_HAVE_HTC_FFC
+endif
+
 LOCAL_MODULE:= libcameraservice
 
 include $(BUILD_SHARED_LIBRARY)
diff --git a/services/camera/libcameraservice/CameraClient.cpp b/services/camera/libcameraservice/CameraClient.cpp
index 1cdb938..967562d 100644
--- a/services/camera/libcameraservice/CameraClient.cpp
+++ b/services/camera/libcameraservice/CameraClient.cpp
@@ -251,8 +251,10 @@ void CameraClient::disconnect() {
     // Release the held ANativeWindow resources.
     if (mPreviewWindow != 0) {
 #ifdef QCOM_HARDWARE
+#ifndef NO_UPDATE_PREVIEW
         mHardware->setPreviewWindow(0);
 #endif
+#endif
         disconnectWindow(mPreviewWindow);
         mPreviewWindow = 0;
 #ifndef QCOM_HARDWARE
@@ -297,9 +299,14 @@ status_t CameraClient::setPreviewWindow(const sp<IBinder>& binder,
             result = mHardware->setPreviewWindow(window);
         }
 #ifdef QCOM_HARDWARE
+#ifndef NO_UPDATE_PREVIEW
     } else {
+        if (window != 0) {
+            native_window_set_buffers_transform(window.get(), mOrientation);
+        }
         result = mHardware->setPreviewWindow(window);
 #endif
+#endif
     }
 
     if (result == NO_ERROR) {
diff --git a/services/camera/libcameraservice/CameraService.cpp b/services/camera/libcameraservice/CameraService.cpp
index d8365eb..387a784 100644
--- a/services/camera/libcameraservice/CameraService.cpp
+++ b/services/camera/libcameraservice/CameraService.cpp
@@ -21,6 +21,8 @@
 #include <stdio.h>
 #include <sys/types.h>
 #include <pthread.h>
+#include <unistd.h>
+#include <fcntl.h>
 
 #include <binder/IPCThreadState.h>
 #include <binder/IServiceManager.h>
@@ -68,6 +70,24 @@ static int getCallingUid() {
 
 // ----------------------------------------------------------------------------
 
+#if defined(BOARD_HAVE_HTC_FFC)
+#define HTC_SWITCH_CAMERA_FILE_PATH "/sys/android_camera2/htcwc"
+static void htcCameraSwitch(int cameraId)
+{
+    char buffer[16];
+    int fd;
+
+    if (access(HTC_SWITCH_CAMERA_FILE_PATH, W_OK) == 0) {
+        snprintf(buffer, sizeof(buffer), "%d", cameraId);
+
+        fd = open(HTC_SWITCH_CAMERA_FILE_PATH, O_WRONLY);
+        write(fd, buffer, strlen(buffer));
+        close(fd);
+    }
+}
+#endif
+
+
 // This is ugly and only safe if we never re-create the CameraService, but
 // should be ok for now.
 static CameraService *gCameraService;
@@ -158,6 +178,10 @@ sp<ICamera> CameraService::connect(
         return NULL;
     }
 
+#if defined(BOARD_HAVE_HTC_FFC)
+    htcCameraSwitch(cameraId);
+#endif
+
     Mutex::Autolock lock(mServiceLock);
     if (mClient[cameraId] != 0) {
         client = mClient[cameraId].promote();