camera: Add wrapper

Change-Id: Ia6a0a358ec5152742ab5b65236cc527ec70b8688

2 files changed, 627 insertions, 0 deletions

diff --git a/camera/Android.mk b/camera/Android.mk
new file mode 100644
index 0000000..a0652a6
--- /dev/null
+++ b/camera/Android.mk
@@ -0,0 +1,15 @@
+LOCAL_PATH := $(call my-dir)
+include $(CLEAR_VARS)
+
+LOCAL_SRC_FILES := \
+    CameraWrapper.cpp
+
+LOCAL_SHARED_LIBRARIES := \
+    libhardware liblog libcamera_client libutils
+
+LOCAL_MODULE_PATH := $(TARGET_OUT_SHARED_LIBRARIES)/hw
+LOCAL_MODULE := camera.exynos4
+LOCAL_MODULE_TAGS := optional
+
+include $(BUILD_SHARED_LIBRARY)
+#include $(BUILD_HEAPTRACKED_SHARED_LIBRARY)
diff --git a/camera/CameraWrapper.cpp b/camera/CameraWrapper.cpp
new file mode 100644
index 0000000..2c1b49c
--- /dev/null
+++ b/camera/CameraWrapper.cpp
@@ -0,0 +1,612 @@
+/*
+ * Copyright (C) 2012-2013, The CyanogenMod 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.
+ */
+
+/**
+* @file CameraWrapper.cpp
+*
+* This file wraps a vendor camera module.
+*
+*/
+
+//#define LOG_NDEBUG 0
+//#define LOG_PARAMETERS
+
+#define LOG_TAG "CameraWrapper"
+#include <cutils/log.h>
+
+#include <utils/threads.h>
+#include <utils/String8.h>
+#include <hardware/hardware.h>
+#include <hardware/camera.h>
+#include <camera/Camera.h>
+#include <camera/CameraParameters.h>
+
+static android::Mutex gCameraWrapperLock;
+static camera_module_t *gVendorModule = 0;
+
+static int camera_device_open(const hw_module_t* module, const char *name,
+                hw_device_t **device);
+static int camera_device_close(hw_device_t* device);
+static int camera_get_number_of_cameras(void);
+static int camera_get_camera_info(int camera_id, struct camera_info *info);
+
+static struct hw_module_methods_t camera_module_methods = {
+        open: camera_device_open
+};
+
+camera_module_t HAL_MODULE_INFO_SYM = {
+    common: {
+         tag: HARDWARE_MODULE_TAG,
+         version_major: 1,
+         version_minor: 0,
+         id: CAMERA_HARDWARE_MODULE_ID,
+         name: "m0xx Camera Wrapper",
+         author: "The CyanogenMod Project",
+         methods: &camera_module_methods,
+         dso: NULL, /* remove compilation warnings */
+         reserved: {0}, /* remove compilation warnings */
+    },
+    get_number_of_cameras: camera_get_number_of_cameras,
+    get_camera_info: camera_get_camera_info,
+    set_callbacks: NULL,
+};
+
+typedef struct wrapper_camera_device {
+    camera_device_t base;
+    int id;
+    camera_device_t *vendor;
+} wrapper_camera_device_t;
+
+#define VENDOR_CALL(device, func, ...) ({ \
+    wrapper_camera_device_t *__wrapper_dev = (wrapper_camera_device_t*) device; \
+    __wrapper_dev->vendor->ops->func(__wrapper_dev->vendor, ##__VA_ARGS__); \
+})
+
+#define CAMERA_ID(device) (((wrapper_camera_device_t *)(device))->id)
+
+static int check_vendor_module()
+{
+    int rv = 0;
+    ALOGV("%s", __FUNCTION__);
+
+    if (gVendorModule)
+        return 0;
+
+    rv = hw_get_module_by_class("camera", "vendor", (const hw_module_t **)&gVendorModule);
+    if (rv)
+        ALOGE("failed to open vendor camera module");
+    return rv;
+}
+
+static char * camera_fixup_getparams(int id, const char * settings)
+{
+    bool videoMode = false;
+    char *manipBuf;
+
+    android::CameraParameters params;
+    params.unflatten(android::String8(settings));
+
+    ALOGV("%s: original parameters:", __func__);
+    //params.dump();
+
+    if (params.get(android::CameraParameters::KEY_RECORDING_HINT)) {
+        videoMode = (!strcmp(params.get(android::CameraParameters::KEY_RECORDING_HINT), "true"));
+    }
+
+#if 0 // this is busted atm
+    /* Set supported scene modes */
+    if (!videoMode) {
+        manipBuf = strdup(params.get(android::CameraParameters::KEY_SUPPORTED_SCENE_MODES));
+        if (manipBuf != NULL && strstr(manipBuf,"hdr") == NULL) {
+            strncat(manipBuf,",hdr",4);
+            params.set(android::CameraParameters::KEY_SUPPORTED_SCENE_MODES,
+                manipBuf);
+        }
+        free(manipBuf);
+    }
+
+    if (params.get("hdr-mode") && !strncmp(params.get("hdr-mode"),"1",1)) {
+        params.set(android::CameraParameters::KEY_SCENE_MODE, "hdr");
+    }
+#endif
+
+    /* We do support it, so announce it */
+    params.set(android::CameraParameters::KEY_VIDEO_SNAPSHOT_SUPPORTED, "true");
+
+    ALOGV("%s: fixed parameters:", __func__);
+    //params.dump();
+
+    android::String8 strParams = params.flatten();
+    char *ret = strdup(strParams.string());
+
+    return ret;
+}
+
+char * camera_fixup_setparams(int id, const char * settings)
+{
+    int previewW, previewH;
+    bool videoMode = false;
+    const char *sceneMode = "auto";
+
+    android::CameraParameters params;
+    params.unflatten(android::String8(settings));
+
+    ALOGV("%s: original parameters:", __func__);
+    //params.dump();
+
+    if (params.get(android::CameraParameters::KEY_RECORDING_HINT)) {
+        videoMode = (!strcmp(params.get(android::CameraParameters::KEY_RECORDING_HINT), "true"));
+    }
+
+#if 0 // this is busted atm
+    if (!videoMode && !strncmp(params.get(android::CameraParameters::KEY_SCENE_MODE),"hdr",3)) {
+        params.set("hdr-mode", "1");
+        params.set(android::CameraParameters::KEY_SCENE_MODE, "auto");
+    } else {
+        params.set("hdr-mode", "0");
+    }
+#endif
+
+    params.dump();
+
+    android::String8 strParams = params.flatten();
+    char *ret = strdup(strParams.string());
+
+    ALOGD("%s: fixed parameters:", __func__);
+    return ret;
+}
+
+/*******************************************************************
+ * implementation of camera_device_ops functions
+ *******************************************************************/
+
+int camera_set_preview_window(struct camera_device * device,
+        struct preview_stream_ops *window)
+{
+    ALOGV("%s->%08X->%08X", __FUNCTION__, (uintptr_t)device, (uintptr_t)(((wrapper_camera_device_t*)device)->vendor));
+
+    if (!device)
+        return -EINVAL;
+
+    return VENDOR_CALL(device, set_preview_window, window);
+}
+
+void camera_set_callbacks(struct camera_device * device,
+        camera_notify_callback notify_cb,
+        camera_data_callback data_cb,
+        camera_data_timestamp_callback data_cb_timestamp,
+        camera_request_memory get_memory,
+        void *user)
+{
+    ALOGV("%s->%08X->%08X", __FUNCTION__, (uintptr_t)device, (uintptr_t)(((wrapper_camera_device_t*)device)->vendor));
+    ALOGV("%s", __FUNCTION__);
+
+    if (!device)
+        return;
+
+    VENDOR_CALL(device, set_callbacks, notify_cb, data_cb, data_cb_timestamp, get_memory, user);
+}
+
+void camera_enable_msg_type(struct camera_device * device, int32_t msg_type)
+{
+    ALOGV("%s->%08X->%08X", __FUNCTION__, (uintptr_t)device, (uintptr_t)(((wrapper_camera_device_t*)device)->vendor));
+    ALOGV("%s", __FUNCTION__);
+
+    if (!device)
+        return;
+
+    VENDOR_CALL(device, enable_msg_type, msg_type);
+}
+
+void camera_disable_msg_type(struct camera_device * device, int32_t msg_type)
+{
+    ALOGV("%s->%08X->%08X", __FUNCTION__, (uintptr_t)device, (uintptr_t)(((wrapper_camera_device_t*)device)->vendor));
+    ALOGV("%s", __FUNCTION__);
+
+    if (!device)
+        return;
+
+    VENDOR_CALL(device, disable_msg_type, msg_type);
+}
+
+int camera_msg_type_enabled(struct camera_device * device, int32_t msg_type)
+{
+    ALOGV("%s", __FUNCTION__);
+    ALOGV("%s->%08X->%08X", __FUNCTION__, (uintptr_t)device, (uintptr_t)(((wrapper_camera_device_t*)device)->vendor));
+
+    if (!device)
+        return 0;
+
+    return VENDOR_CALL(device, msg_type_enabled, msg_type);
+}
+
+int camera_start_preview(struct camera_device * device)
+{
+    ALOGV("%s", __FUNCTION__);
+    ALOGV("%s->%08X->%08X", __FUNCTION__, (uintptr_t)device, (uintptr_t)(((wrapper_camera_device_t*)device)->vendor));
+
+    if (!device)
+        return -EINVAL;
+
+    return VENDOR_CALL(device, start_preview);
+}
+
+void camera_stop_preview(struct camera_device * device)
+{
+    ALOGV("%s", __FUNCTION__);
+    ALOGV("%s->%08X->%08X", __FUNCTION__, (uintptr_t)device, (uintptr_t)(((wrapper_camera_device_t*)device)->vendor));
+
+    if (!device)
+        return;
+
+    VENDOR_CALL(device, stop_preview);
+}
+
+int camera_preview_enabled(struct camera_device * device)
+{
+    ALOGV("%s", __FUNCTION__);
+    ALOGV("%s->%08X->%08X", __FUNCTION__, (uintptr_t)device, (uintptr_t)(((wrapper_camera_device_t*)device)->vendor));
+
+    if (!device)
+        return -EINVAL;
+
+    return VENDOR_CALL(device, preview_enabled);
+}
+
+int camera_store_meta_data_in_buffers(struct camera_device * device, int enable)
+{
+    ALOGV("%s", __FUNCTION__);
+    ALOGV("%s->%08X->%08X", __FUNCTION__, (uintptr_t)device, (uintptr_t)(((wrapper_camera_device_t*)device)->vendor));
+
+    if (!device)
+        return -EINVAL;
+
+    return VENDOR_CALL(device, store_meta_data_in_buffers, enable);
+}
+
+int camera_start_recording(struct camera_device * device)
+{
+    ALOGV("%s", __FUNCTION__);
+    ALOGV("%s->%08X->%08X", __FUNCTION__, (uintptr_t)device, (uintptr_t)(((wrapper_camera_device_t*)device)->vendor));
+
+    if (!device)
+        return EINVAL;
+
+    return VENDOR_CALL(device, start_recording);
+}
+
+void camera_stop_recording(struct camera_device * device)
+{
+    ALOGV("%s", __FUNCTION__);
+    ALOGV("%s->%08X->%08X", __FUNCTION__, (uintptr_t)device, (uintptr_t)(((wrapper_camera_device_t*)device)->vendor));
+
+    if (!device)
+        return;
+
+
+    VENDOR_CALL(device, stop_recording);
+
+    /* Restart preview after stop recording to flush buffers and not crash */
+    VENDOR_CALL(device, stop_preview);
+    VENDOR_CALL(device, start_preview);
+}
+
+int camera_recording_enabled(struct camera_device * device)
+{
+    ALOGV("%s", __FUNCTION__);
+    ALOGV("%s->%08X->%08X", __FUNCTION__, (uintptr_t)device, (uintptr_t)(((wrapper_camera_device_t*)device)->vendor));
+
+    if (!device)
+        return -EINVAL;
+
+    return VENDOR_CALL(device, recording_enabled);
+}
+
+void camera_release_recording_frame(struct camera_device * device,
+                const void *opaque)
+{
+    ALOGV("%s", __FUNCTION__);
+    ALOGV("%s->%08X->%08X", __FUNCTION__, (uintptr_t)device, (uintptr_t)(((wrapper_camera_device_t*)device)->vendor));
+
+    if (!device)
+        return;
+
+    VENDOR_CALL(device, release_recording_frame, opaque);
+}
+
+int camera_auto_focus(struct camera_device * device)
+{
+    ALOGV("%s", __FUNCTION__);
+    ALOGV("%s->%08X->%08X", __FUNCTION__, (uintptr_t)device, (uintptr_t)(((wrapper_camera_device_t*)device)->vendor));
+
+    if (!device)
+        return -EINVAL;
+
+
+    return VENDOR_CALL(device, auto_focus);
+}
+
+int camera_cancel_auto_focus(struct camera_device * device)
+{
+    ALOGV("%s", __FUNCTION__);
+    ALOGV("%s->%08X->%08X", __FUNCTION__, (uintptr_t)device, (uintptr_t)(((wrapper_camera_device_t*)device)->vendor));
+
+    if (!device)
+        return -EINVAL;
+
+    return VENDOR_CALL(device, cancel_auto_focus);
+}
+
+int camera_take_picture(struct camera_device * device)
+{
+    ALOGV("%s", __FUNCTION__);
+    ALOGV("%s->%08X->%08X", __FUNCTION__, (uintptr_t)device, (uintptr_t)(((wrapper_camera_device_t*)device)->vendor));
+
+    if (!device)
+        return -EINVAL;
+
+    return VENDOR_CALL(device, take_picture);
+}
+
+int camera_cancel_picture(struct camera_device * device)
+{
+    ALOGV("%s", __FUNCTION__);
+    ALOGV("%s->%08X->%08X", __FUNCTION__, (uintptr_t)device, (uintptr_t)(((wrapper_camera_device_t*)device)->vendor));
+
+    if (!device)
+        return -EINVAL;
+
+    return VENDOR_CALL(device, cancel_picture);
+}
+
+int camera_set_parameters(struct camera_device * device, const char *params)
+{
+    ALOGV("%s", __FUNCTION__);
+    ALOGV("%s->%08X->%08X", __FUNCTION__, (uintptr_t)device, (uintptr_t)(((wrapper_camera_device_t*)device)->vendor));
+
+    if (!device)
+        return -EINVAL;
+
+    char *tmp = NULL;
+    tmp = camera_fixup_setparams(CAMERA_ID(device), params);
+
+#ifdef LOG_PARAMETERS
+    __android_log_write(ANDROID_LOG_VERBOSE, LOG_TAG, tmp);
+#endif
+
+    int ret = VENDOR_CALL(device, set_parameters, tmp);
+    return ret;
+}
+
+char* camera_get_parameters(struct camera_device * device)
+{
+    ALOGV("%s", __FUNCTION__);
+    ALOGV("%s->%08X->%08X", __FUNCTION__, (uintptr_t)device, (uintptr_t)(((wrapper_camera_device_t*)device)->vendor));
+
+    if (!device)
+        return NULL;
+
+    char *params = VENDOR_CALL(device, get_parameters);
+
+#ifdef LOG_PARAMETERS
+    __android_log_write(ANDROID_LOG_VERBOSE, LOG_TAG, params);
+#endif
+
+    char *tmp = camera_fixup_getparams(CAMERA_ID(device), params);
+    VENDOR_CALL(device, put_parameters, params);
+    params = tmp;
+
+#ifdef LOG_PARAMETERS
+    __android_log_write(ANDROID_LOG_VERBOSE, LOG_TAG, params);
+#endif
+
+    return params;
+}
+
+static void camera_put_parameters(struct camera_device *device, char *params)
+{
+    ALOGV("%s", __FUNCTION__);
+    ALOGV("%s->%08X->%08X", __FUNCTION__, (uintptr_t)device, (uintptr_t)(((wrapper_camera_device_t*)device)->vendor));
+
+    if (params)
+        free(params);
+}
+
+int camera_send_command(struct camera_device * device,
+            int32_t cmd, int32_t arg1, int32_t arg2)
+{
+    ALOGV("%s", __FUNCTION__);
+    ALOGV("%s->%08X->%08X", __FUNCTION__, (uintptr_t)device, (uintptr_t)(((wrapper_camera_device_t*)device)->vendor));
+
+    if (!device)
+        return -EINVAL;
+
+    return VENDOR_CALL(device, send_command, cmd, arg1, arg2);
+}
+
+void camera_release(struct camera_device * device)
+{
+    ALOGV("%s", __FUNCTION__);
+    ALOGV("%s->%08X->%08X", __FUNCTION__, (uintptr_t)device, (uintptr_t)(((wrapper_camera_device_t*)device)->vendor));
+
+    if (!device)
+        return;
+
+    VENDOR_CALL(device, release);
+}
+
+int camera_dump(struct camera_device * device, int fd)
+{
+    if (!device)
+        return -EINVAL;
+
+    return VENDOR_CALL(device, dump, fd);
+}
+
+extern "C" void heaptracker_free_leaked_memory(void);
+
+int camera_device_close(hw_device_t* device)
+{
+    int ret = 0;
+    wrapper_camera_device_t *wrapper_dev = NULL;
+
+    ALOGV("%s", __FUNCTION__);
+
+    android::Mutex::Autolock lock(gCameraWrapperLock);
+
+    if (!device) {
+        ret = -EINVAL;
+        goto done;
+    }
+
+    wrapper_dev = (wrapper_camera_device_t*) device;
+
+    wrapper_dev->vendor->common.close((hw_device_t*)wrapper_dev->vendor);
+    if (wrapper_dev->base.ops)
+        free(wrapper_dev->base.ops);
+    free(wrapper_dev);
+done:
+#ifdef HEAPTRACKER
+    heaptracker_free_leaked_memory();
+#endif
+    return ret;
+}
+
+/*******************************************************************
+ * implementation of camera_module functions
+ *******************************************************************/
+
+/* open device handle to one of the cameras
+ *
+ * assume camera service will keep singleton of each camera
+ * so this function will always only be called once per camera instance
+ */
+
+int camera_device_open(const hw_module_t* module, const char* name,
+                hw_device_t** device)
+{
+    int rv = 0;
+    int num_cameras = 0;
+    int cameraid;
+    wrapper_camera_device_t* camera_device = NULL;
+    camera_device_ops_t* camera_ops = NULL;
+
+    android::Mutex::Autolock lock(gCameraWrapperLock);
+
+    ALOGV("camera_device open");
+
+    if (name != NULL) {
+        if (check_vendor_module())
+            return -EINVAL;
+
+        cameraid = atoi(name);
+        num_cameras = gVendorModule->get_number_of_cameras();
+
+        if (cameraid > num_cameras) {
+            ALOGE("camera service provided cameraid out of bounds, "
+                    "cameraid = %d, num supported = %d",
+                    cameraid, num_cameras);
+            rv = -EINVAL;
+            goto fail;
+        }
+
+        camera_device = (wrapper_camera_device_t*)malloc(sizeof(*camera_device));
+        if (!camera_device) {
+            ALOGE("camera_device allocation fail");
+            rv = -ENOMEM;
+            goto fail;
+        }
+        memset(camera_device, 0, sizeof(*camera_device));
+        camera_device->id = cameraid;
+
+        if ((rv = gVendorModule->common.methods->open((const hw_module_t*)gVendorModule, name, (hw_device_t**)&(camera_device->vendor)))) {
+            ALOGE("vendor camera open fail");
+            goto fail;
+        }
+        ALOGV("%s: got vendor camera device 0x%08X", __FUNCTION__, (uintptr_t)(camera_device->vendor));
+
+        camera_ops = (camera_device_ops_t*)malloc(sizeof(*camera_ops));
+        if (!camera_ops) {
+            ALOGE("camera_ops allocation fail");
+            rv = -ENOMEM;
+            goto fail;
+        }
+
+        memset(camera_ops, 0, sizeof(*camera_ops));
+
+        camera_device->base.common.tag = HARDWARE_DEVICE_TAG;
+        camera_device->base.common.version = 0;
+        camera_device->base.common.module = (hw_module_t *)(module);
+        camera_device->base.common.close = camera_device_close;
+        camera_device->base.ops = camera_ops;
+
+        camera_ops->set_preview_window = camera_set_preview_window;
+        camera_ops->set_callbacks = camera_set_callbacks;
+        camera_ops->enable_msg_type = camera_enable_msg_type;
+        camera_ops->disable_msg_type = camera_disable_msg_type;
+        camera_ops->msg_type_enabled = camera_msg_type_enabled;
+        camera_ops->start_preview = camera_start_preview;
+        camera_ops->stop_preview = camera_stop_preview;
+        camera_ops->preview_enabled = camera_preview_enabled;
+        camera_ops->store_meta_data_in_buffers = camera_store_meta_data_in_buffers;
+        camera_ops->start_recording = camera_start_recording;
+        camera_ops->stop_recording = camera_stop_recording;
+        camera_ops->recording_enabled = camera_recording_enabled;
+        camera_ops->release_recording_frame = camera_release_recording_frame;
+        camera_ops->auto_focus = camera_auto_focus;
+        camera_ops->cancel_auto_focus = camera_cancel_auto_focus;
+        camera_ops->take_picture = camera_take_picture;
+        camera_ops->cancel_picture = camera_cancel_picture;
+        camera_ops->set_parameters = camera_set_parameters;
+        camera_ops->get_parameters = camera_get_parameters;
+        camera_ops->put_parameters = camera_put_parameters;
+        camera_ops->send_command = camera_send_command;
+        camera_ops->release = camera_release;
+        camera_ops->dump = camera_dump;
+
+        *device = &camera_device->base.common;
+    }
+
+    return rv;
+
+fail:
+    if(camera_device) {
+        free(camera_device);
+        camera_device = NULL;
+    }
+    if(camera_ops) {
+        free(camera_ops);
+        camera_ops = NULL;
+    }
+    *device = NULL;
+    return rv;
+}
+
+int camera_get_number_of_cameras(void)
+{
+    ALOGV("%s", __FUNCTION__);
+    if (check_vendor_module())
+        return 0;
+    return gVendorModule->get_number_of_cameras();
+}
+
+int camera_get_camera_info(int camera_id, struct camera_info *info)
+{
+    ALOGV("%s", __FUNCTION__);
+    if (check_vendor_module())
+        return 0;
+    return gVendorModule->get_camera_info(camera_id, info);
+}