diff options
Diffstat (limited to 'libcamera/CameraHal_Module.cpp')
| -rw-r--r-- | libcamera/CameraHal_Module.cpp | 429 |
1 files changed, 429 insertions, 0 deletions
diff --git a/libcamera/CameraHal_Module.cpp b/libcamera/CameraHal_Module.cpp new file mode 100644 index 0000000..d322673 --- /dev/null +++ b/libcamera/CameraHal_Module.cpp @@ -0,0 +1,429 @@ +/* + * Copyright (C) Texas Instruments - http://www.ti.com/ + * + * 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 CameraHal.cpp +* +* This file maps the Camera Hardware Interface to V4L2. +* +*/ + +#define LOG_TAG "****CameraHAL" + +#include <utils/threads.h> +#include <stdio.h> +#include <stdarg.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <time.h> +#include <fcntl.h> +#include <sys/ioctl.h> +#include <sys/mman.h> +#include <sys/stat.h> +#include <utils/Log.h> +#include <utils/threads.h> +#include <linux/videodev2.h> +#include "binder/MemoryBase.h" +#include "binder/MemoryHeapBase.h" +#include <utils/threads.h> +#include <camera/CameraParameters.h> +#include <hardware/camera.h> +#include <sys/ioctl.h> +#include <utils/threads.h> +#include "CameraHardware.h" +#include <binder/MemoryBase.h> +#include <binder/MemoryHeapBase.h> +#include <utils/threads.h> +#include "V4L2Camera.h" +#define LOG_FUNCTION_NAME LOGD("%d: %s() ENTER", __LINE__, __FUNCTION__); + +using namespace android; +static CameraHardware *V4L2CameraHardware; +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: "V4L2 CameraHal Module", + author: "Linaro", + 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, +}; + +typedef struct V4L2_camera_device { + camera_device_t base; + /* TI specific "private" data can go here (base.priv) */ + int cameraid; +} V4l2_camera_device_t; + + +/******************************************************************* + * implementation of camera_device_ops functions + *******************************************************************/ + +int camera_set_preview_window(struct camera_device * device, + struct preview_stream_ops *window) +{ + int rv = -EINVAL; + LOG_FUNCTION_NAME + if(!device) + return rv; + + if(window==NULL) + { + LOGW("window is NULL"); + V4L2CameraHardware->setPreviewWindow(window); + return -1; + } + + V4L2CameraHardware->setPreviewWindow(window); + LOGD("Exiting the function"); + return 0; +} + +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) +{ + V4l2_camera_device_t* V4l2_dev = NULL; + LOG_FUNCTION_NAME + V4L2CameraHardware->setCallbacks(notify_cb,data_cb,data_cb_timestamp,get_memory,user); +} + +void camera_enable_msg_type(struct camera_device * device, int32_t msg_type) +{ + V4l2_camera_device_t* V4l2_dev = NULL; + + LOG_FUNCTION_NAME + V4L2CameraHardware->enableMsgType(msg_type); +} + +void camera_disable_msg_type(struct camera_device * device, int32_t msg_type) +{ + V4l2_camera_device_t* V4l2_dev = NULL; + LOG_FUNCTION_NAME + V4L2CameraHardware->disableMsgType(msg_type); +} + +int camera_msg_type_enabled(struct camera_device * device, int32_t msg_type) +{ + V4l2_camera_device_t* V4l2_dev = NULL; + LOG_FUNCTION_NAME + return V4L2CameraHardware->msgTypeEnabled(msg_type); +} + +int camera_start_preview(struct camera_device * device) +{ + LOG_FUNCTION_NAME + return V4L2CameraHardware->startPreview(); +} + +void camera_stop_preview(struct camera_device * device) +{ +LOG_FUNCTION_NAME +V4L2CameraHardware->stopPreview(); +} + +int camera_preview_enabled(struct camera_device * device) +{ + LOG_FUNCTION_NAME + if(V4L2CameraHardware->previewEnabled()) + { + LOGW("----Preview Enabled----"); + return 1; + } + else + { + LOGW("----Preview not Enabled----"); + return 0; + } +} + +int camera_store_meta_data_in_buffers(struct camera_device * device, int enable) +{ + int rv = -EINVAL; + LOG_FUNCTION_NAME + return rv; +} + +int camera_start_recording(struct camera_device * device) +{ +LOG_FUNCTION_NAME + return V4L2CameraHardware->startRecording(); +} + +void camera_stop_recording(struct camera_device * device) +{ +LOG_FUNCTION_NAME + V4L2CameraHardware->stopRecording(); +} + +int camera_recording_enabled(struct camera_device * device) +{ + LOG_FUNCTION_NAME + return V4L2CameraHardware->recordingEnabled(); +} + +void camera_release_recording_frame(struct camera_device * device, + const void *opaque) +{ + LOG_FUNCTION_NAME + return V4L2CameraHardware->releaseRecordingFrame(opaque); +} + +int camera_auto_focus(struct camera_device * device) +{ + LOG_FUNCTION_NAME + return V4L2CameraHardware->autoFocus(); +} + +int camera_cancel_auto_focus(struct camera_device * device) +{ +LOG_FUNCTION_NAME + return V4L2CameraHardware->cancelAutoFocus(); +} + +int camera_take_picture(struct camera_device * device) +{ +LOG_FUNCTION_NAME + return V4L2CameraHardware->takePicture(); +} + +int camera_cancel_picture(struct camera_device * device) +{ + int rv = 0;// -EINVAL; + LOG_FUNCTION_NAME + return V4L2CameraHardware->cancelPicture(); +} + +int camera_set_parameters(struct camera_device * device, const char *params) +{ + LOG_FUNCTION_NAME + CameraParameters *camParams = new CameraParameters(); + String8 *params_str8 = new String8(params); + camParams->unflatten(*params_str8); + return V4L2CameraHardware->setParameters(*camParams); +} + +char* camera_get_parameters(struct camera_device * device) +{ + char* param = NULL ; +#if 1 + String8 params_str8 = V4L2CameraHardware->getParameters().flatten(); + // camera service frees this string... + param = (char*) malloc(sizeof(char) * (params_str8.length()+1)); + strcpy(param, params_str8.string()); + LOGD("%s",param); +#endif + LOG_FUNCTION_NAME + return param; +} + +static void camera_put_parameters(struct camera_device *device, char *params) +{ + LOG_FUNCTION_NAME + CameraParameters *camParams = new CameraParameters(); + String8 *params_str8 = new String8(params); + camParams->unflatten(*params_str8); + V4L2CameraHardware->setParameters(*camParams); +} + +int camera_send_command(struct camera_device * device, + int32_t cmd, int32_t arg1, int32_t arg2) +{ + int rv =0;// -EINVAL; + LOG_FUNCTION_NAME + return rv; +} + +void camera_release(struct camera_device * device) +{ +LOG_FUNCTION_NAME + V4L2CameraHardware->release(); +} + + +int camera_dump(struct camera_device * device, int fd) +{ + int rv = 0;//-EINVAL; + LOG_FUNCTION_NAME + return rv; +} + +extern "C" void heaptracker_free_leaked_memory(void); + +int camera_device_close(hw_device_t* device) +{ + int ret = 0; + LOG_FUNCTION_NAME + delete V4L2CameraHardware; + V4L2CameraHardware=NULL; + 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 = 1; + int cameraid; + V4l2_camera_device_t* camera_device = NULL; + camera_device_ops_t* camera_ops = NULL; + + LOG_FUNCTION_NAME + + + LOGI("camera_device open"); + + if (name != NULL) { + cameraid = atoi(name); + + if(cameraid > num_cameras) + { + LOGE("camera service provided cameraid out of bounds, " + "cameraid = %d, num supported = %d", + cameraid, num_cameras); + rv = -EINVAL; + goto fail; + } + + + camera_device = (V4l2_camera_device_t*)malloc(sizeof(*camera_device)); + if(!camera_device) + { + LOGE("camera_device allocation fail"); + rv = -ENOMEM; + goto fail; + } + + camera_ops = (camera_device_ops_t*)malloc(sizeof(*camera_ops)); + if(!camera_ops) + { + LOGE("camera_ops allocation fail"); + rv = -ENOMEM; + goto fail; + } + + memset(camera_device, 0, sizeof(*camera_device)); + 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; + + // -------- TI specific stuff -------- + + camera_device->cameraid = cameraid; + V4L2CameraHardware = new CameraHardware(0); + } + + 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) +{ +LOG_FUNCTION_NAME + int num_cameras =2;// MAX_CAMERAS_SUPPORTED; + return num_cameras; +} + +int camera_get_camera_info(int camera_id, struct camera_info *info) +{ + LOG_FUNCTION_NAME + int rv = 0; + int face_value = CAMERA_FACING_FRONT; + int orientation = 0; + const char *valstr = NULL; + if(camera_id == 0) { + info->facing = CAMERA_FACING_BACK; + LOGD("cameraHal BACK %d",camera_id); + } + else { + LOGD("cameraHal Front %d",camera_id); + info->facing = face_value; + } + info->orientation = orientation; + LOGD("cameraHal %d",camera_id); + return rv; +} |