camera2: Update CameraService for HAL1 shim.

Updates the camera service to handle shim connections.

Changes include:
- Adds begin/end configure binder calls.
- Adds cache for shim client static camera metadata.
- Implements basic getCameraCharacteristic functionality for shim clients.

Bug: 15116722
Bug: 15117269

Change-Id: I510c5888ca15f8e7d3b8ed1680ff1c7f8f514744

3 files changed, 78 insertions, 2 deletions

diff --git a/camera/Android.mk b/camera/Android.mk
index 5774b6f..c10e38a 100644
--- a/camera/Android.mk
+++ b/camera/Android.mk
@@ -50,7 +50,7 @@ LOCAL_SHARED_LIBRARIES := \
 
 LOCAL_C_INCLUDES += \
 	system/media/camera/include \
-	system/media/private/camera/include
+	system/media/private/camera/include \
 
 LOCAL_MODULE:= libcamera_client
 
diff --git a/camera/CameraParameters.cpp b/camera/CameraParameters.cpp
index af091f4..161f842 100644
--- a/camera/CameraParameters.cpp
+++ b/camera/CameraParameters.cpp
@@ -21,6 +21,7 @@
 #include <string.h>
 #include <stdlib.h>
 #include <camera/CameraParameters.h>
+#include <system/graphics.h>
 
 namespace android {
 // Parameter keys to communicate between camera application and driver.
@@ -483,4 +484,45 @@ status_t CameraParameters::dump(int fd, const Vector<String16>& args) const
     return NO_ERROR;
 }
 
+void CameraParameters::getSupportedPreviewFormats(Vector<int>& formats) const {
+    const char* supportedPreviewFormats =
+          get(CameraParameters::KEY_SUPPORTED_PREVIEW_FORMATS);
+
+    String8 fmtStr(supportedPreviewFormats);
+    char* prevFmts = fmtStr.lockBuffer(fmtStr.size());
+
+    char* savePtr;
+    char* fmt = strtok_r(prevFmts, ",", &savePtr);
+    while (fmt) {
+        int actual = previewFormatToEnum(fmt);
+        if (actual != -1) {
+            formats.add(actual);
+        }
+        fmt = strtok_r(NULL, ",", &savePtr);
+    }
+    fmtStr.unlockBuffer(fmtStr.size());
+}
+
+
+int CameraParameters::previewFormatToEnum(const char* format) {
+    return
+        !format ?
+            HAL_PIXEL_FORMAT_YCrCb_420_SP :
+        !strcmp(format, PIXEL_FORMAT_YUV422SP) ?
+            HAL_PIXEL_FORMAT_YCbCr_422_SP : // NV16
+        !strcmp(format, PIXEL_FORMAT_YUV420SP) ?
+            HAL_PIXEL_FORMAT_YCrCb_420_SP : // NV21
+        !strcmp(format, PIXEL_FORMAT_YUV422I) ?
+            HAL_PIXEL_FORMAT_YCbCr_422_I :  // YUY2
+        !strcmp(format, PIXEL_FORMAT_YUV420P) ?
+            HAL_PIXEL_FORMAT_YV12 :         // YV12
+        !strcmp(format, PIXEL_FORMAT_RGB565) ?
+            HAL_PIXEL_FORMAT_RGB_565 :      // RGB565
+        !strcmp(format, PIXEL_FORMAT_RGBA8888) ?
+            HAL_PIXEL_FORMAT_RGBA_8888 :    // RGB8888
+        !strcmp(format, PIXEL_FORMAT_BAYER_RGGB) ?
+            HAL_PIXEL_FORMAT_RAW_SENSOR :   // Raw sensor data
+        -1;
+}
+
 }; // namespace android
diff --git a/camera/camera2/ICameraDeviceUser.cpp b/camera/camera2/ICameraDeviceUser.cpp
index ad65955..89ea46d 100644
--- a/camera/camera2/ICameraDeviceUser.cpp
+++ b/camera/camera2/ICameraDeviceUser.cpp
@@ -42,7 +42,9 @@ enum {
     CREATE_DEFAULT_REQUEST,
     GET_CAMERA_INFO,
     WAIT_UNTIL_IDLE,
-    FLUSH
+    FLUSH,
+    BEGIN_CONFIGURE,
+    END_CONFIGURE
 };
 
 namespace {
@@ -283,6 +285,26 @@ public:
         return res;
     }
 
+    virtual status_t beginConfigure()
+    {
+        ALOGV("beginConfigure");
+        Parcel data, reply;
+        data.writeInterfaceToken(ICameraDeviceUser::getInterfaceDescriptor());
+        remote()->transact(BEGIN_CONFIGURE, data, &reply);
+        reply.readExceptionCode();
+        return reply.readInt32();
+    }
+
+    virtual status_t endConfigure()
+    {
+        ALOGV("endConfigure");
+        Parcel data, reply;
+        data.writeInterfaceToken(ICameraDeviceUser::getInterfaceDescriptor());
+        remote()->transact(END_CONFIGURE, data, &reply);
+        reply.readExceptionCode();
+        return reply.readInt32();
+    }
+
 private:
 
 
@@ -456,6 +478,18 @@ status_t BnCameraDeviceUser::onTransact(
             reply->writeInt64(lastFrameNumber);
             return NO_ERROR;
         }
+        case BEGIN_CONFIGURE: {
+            CHECK_INTERFACE(ICameraDeviceUser, data, reply);
+            reply->writeNoException();
+            reply->writeInt32(beginConfigure());
+            return NO_ERROR;
+        } break;
+        case END_CONFIGURE: {
+            CHECK_INTERFACE(ICameraDeviceUser, data, reply);
+            reply->writeNoException();
+            reply->writeInt32(endConfigure());
+            return NO_ERROR;
+        } break;
         default:
             return BBinder::onTransact(code, data, reply, flags);
     }