/* * 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 "CameraHal.h" #include "CameraProperties.h" #include "TICameraParameters.h" static android::CameraProperties gCameraProperties; static android::CameraHal* gCameraHals[MAX_CAMERAS_SUPPORTED]; static unsigned int gCamerasOpen = 0; static android::Mutex gCameraHalDeviceLock; 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 = "TI OMAP CameraHal Module", .author = "TI", .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 ti_camera_device { camera_device_t base; /* TI specific "private" data can go here (base.priv) */ int cameraid; } ti_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; ti_camera_device_t* ti_dev = NULL; ALOGV("%s", __FUNCTION__); if(!device) return rv; ti_dev = (ti_camera_device_t*) device; rv = gCameraHals[ti_dev->cameraid]->setPreviewWindow(window); return rv; } 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) { ti_camera_device_t* ti_dev = NULL; ALOGV("%s", __FUNCTION__); if(!device) return; ti_dev = (ti_camera_device_t*) device; gCameraHals[ti_dev->cameraid]->setCallbacks(notify_cb, data_cb, data_cb_timestamp, get_memory, user); } void camera_enable_msg_type(struct camera_device * device, int32_t msg_type) { ti_camera_device_t* ti_dev = NULL; ALOGV("%s", __FUNCTION__); if(!device) return; ti_dev = (ti_camera_device_t*) device; gCameraHals[ti_dev->cameraid]->enableMsgType(msg_type); } void camera_disable_msg_type(struct camera_device * device, int32_t msg_type) { ti_camera_device_t* ti_dev = NULL; ALOGV("%s", __FUNCTION__); if(!device) return; ti_dev = (ti_camera_device_t*) device; gCameraHals[ti_dev->cameraid]->disableMsgType(msg_type); } int camera_msg_type_enabled(struct camera_device * device, int32_t msg_type) { ti_camera_device_t* ti_dev = NULL; ALOGV("%s", __FUNCTION__); if(!device) return 0; ti_dev = (ti_camera_device_t*) device; return gCameraHals[ti_dev->cameraid]->msgTypeEnabled(msg_type); } int camera_start_preview(struct camera_device * device) { int rv = -EINVAL; ti_camera_device_t* ti_dev = NULL; ALOGV("%s", __FUNCTION__); if(!device) return rv; ti_dev = (ti_camera_device_t*) device; rv = gCameraHals[ti_dev->cameraid]->startPreview(); return rv; } void camera_stop_preview(struct camera_device * device) { ti_camera_device_t* ti_dev = NULL; ALOGV("%s", __FUNCTION__); if(!device) return; ti_dev = (ti_camera_device_t*) device; gCameraHals[ti_dev->cameraid]->stopPreview(); } int camera_preview_enabled(struct camera_device * device) { int rv = -EINVAL; ti_camera_device_t* ti_dev = NULL; ALOGV("%s", __FUNCTION__); if(!device) return rv; ti_dev = (ti_camera_device_t*) device; rv = gCameraHals[ti_dev->cameraid]->previewEnabled(); return rv; } int camera_store_meta_data_in_buffers(struct camera_device * device, int enable) { int rv = -EINVAL; ti_camera_device_t* ti_dev = NULL; ALOGV("%s", __FUNCTION__); if(!device) return rv; ti_dev = (ti_camera_device_t*) device; // TODO: meta data buffer not current supported rv = gCameraHals[ti_dev->cameraid]->storeMetaDataInBuffers(enable); return rv; //return enable ? android::INVALID_OPERATION: android::OK; } int camera_start_recording(struct camera_device * device) { int rv = -EINVAL; ti_camera_device_t* ti_dev = NULL; ALOGV("%s", __FUNCTION__); if(!device) return rv; ti_dev = (ti_camera_device_t*) device; rv = gCameraHals[ti_dev->cameraid]->startRecording(); return rv; } void camera_stop_recording(struct camera_device * device) { ti_camera_device_t* ti_dev = NULL; ALOGV("%s", __FUNCTION__); if(!device) return; ti_dev = (ti_camera_device_t*) device; gCameraHals[ti_dev->cameraid]->stopRecording(); } int camera_recording_enabled(struct camera_device * device) { int rv = -EINVAL; ti_camera_device_t* ti_dev = NULL; ALOGV("%s", __FUNCTION__); if(!device) return rv; ti_dev = (ti_camera_device_t*) device; rv = gCameraHals[ti_dev->cameraid]->recordingEnabled(); return rv; } void camera_release_recording_frame(struct camera_device * device, const void *opaque) { ti_camera_device_t* ti_dev = NULL; ALOGV("%s", __FUNCTION__); if(!device) return; ti_dev = (ti_camera_device_t*) device; gCameraHals[ti_dev->cameraid]->releaseRecordingFrame(opaque); } int camera_auto_focus(struct camera_device * device) { int rv = -EINVAL; ti_camera_device_t* ti_dev = NULL; ALOGV("%s", __FUNCTION__); if(!device) return rv; ti_dev = (ti_camera_device_t*) device; rv = gCameraHals[ti_dev->cameraid]->autoFocus(); return rv; } int camera_cancel_auto_focus(struct camera_device * device) { int rv = -EINVAL; ti_camera_device_t* ti_dev = NULL; ALOGV("%s", __FUNCTION__); if(!device) return rv; ti_dev = (ti_camera_device_t*) device; rv = gCameraHals[ti_dev->cameraid]->cancelAutoFocus(); return rv; } int camera_take_picture(struct camera_device * device) { int rv = -EINVAL; ti_camera_device_t* ti_dev = NULL; ALOGV("%s", __FUNCTION__); if(!device) return rv; ti_dev = (ti_camera_device_t*) device; rv = gCameraHals[ti_dev->cameraid]->takePicture(); return rv; } int camera_cancel_picture(struct camera_device * device) { int rv = -EINVAL; ti_camera_device_t* ti_dev = NULL; ALOGV("%s", __FUNCTION__); if(!device) return rv; ti_dev = (ti_camera_device_t*) device; rv = gCameraHals[ti_dev->cameraid]->cancelPicture(); return rv; } int camera_set_parameters(struct camera_device * device, const char *params) { int rv = -EINVAL; ti_camera_device_t* ti_dev = NULL; ALOGV("%s", __FUNCTION__); if(!device) return rv; ti_dev = (ti_camera_device_t*) device; rv = gCameraHals[ti_dev->cameraid]->setParameters(params); return rv; } char* camera_get_parameters(struct camera_device * device) { char* param = NULL; ti_camera_device_t* ti_dev = NULL; ALOGV("%s", __FUNCTION__); if(!device) return NULL; ti_dev = (ti_camera_device_t*) device; param = gCameraHals[ti_dev->cameraid]->getParameters(); return param; } static void camera_put_parameters(struct camera_device *device, char *parms) { ti_camera_device_t* ti_dev = NULL; ALOGV("%s", __FUNCTION__); if(!device) return; ti_dev = (ti_camera_device_t*) device; gCameraHals[ti_dev->cameraid]->putParameters(parms); } int camera_send_command(struct camera_device * device, int32_t cmd, int32_t arg1, int32_t arg2) { int rv = -EINVAL; ti_camera_device_t* ti_dev = NULL; ALOGV("%s", __FUNCTION__); if(!device) return rv; ti_dev = (ti_camera_device_t*) device; rv = gCameraHals[ti_dev->cameraid]->sendCommand(cmd, arg1, arg2); return rv; } void camera_release(struct camera_device * device) { ti_camera_device_t* ti_dev = NULL; ALOGV("%s", __FUNCTION__); if(!device) return; ti_dev = (ti_camera_device_t*) device; gCameraHals[ti_dev->cameraid]->release(); } int camera_dump(struct camera_device * device, int fd) { int rv = -EINVAL; ti_camera_device_t* ti_dev = NULL; if(!device) return rv; ti_dev = (ti_camera_device_t*) device; rv = gCameraHals[ti_dev->cameraid]->dump(fd); return rv; } extern "C" void heaptracker_free_leaked_memory(void); int camera_device_close(hw_device_t* device) { int ret = 0; ti_camera_device_t* ti_dev = NULL; ALOGV("%s", __FUNCTION__); android::Mutex::Autolock lock(gCameraHalDeviceLock); if (!device) { ret = -EINVAL; goto done; } ti_dev = (ti_camera_device_t*) device; if (ti_dev) { if (gCameraHals[ti_dev->cameraid]) { delete gCameraHals[ti_dev->cameraid]; gCameraHals[ti_dev->cameraid] = NULL; gCamerasOpen--; } if (ti_dev->base.ops) { free(ti_dev->base.ops); } free(ti_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; ti_camera_device_t* camera_device = NULL; camera_device_ops_t* camera_ops = NULL; android::CameraHal* camera = NULL; android::CameraProperties::Properties* properties = NULL; android::Mutex::Autolock lock(gCameraHalDeviceLock); CAMHAL_LOGI("camera_device open"); if (name != NULL) { cameraid = atoi(name); num_cameras = gCameraProperties.camerasSupported(); if(cameraid > num_cameras) { ALOGE("camera service provided cameraid out of bounds, " "cameraid = %d, num supported = %d", cameraid, num_cameras); rv = -EINVAL; goto fail; } if(gCamerasOpen >= MAX_SIMUL_CAMERAS_SUPPORTED) { ALOGE("maximum number of cameras already open"); rv = -ENOMEM; goto fail; } camera_device = (ti_camera_device_t*)malloc(sizeof(*camera_device)); if(!camera_device) { ALOGE("camera_device allocation fail"); rv = -ENOMEM; goto fail; } camera_ops = (camera_device_ops_t*)malloc(sizeof(*camera_ops)); if(!camera_ops) { ALOGE("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; if(gCameraProperties.getProperties(cameraid, &properties) < 0) { ALOGE("Couldn't get camera properties"); rv = -ENOMEM; goto fail; } camera = new android::CameraHal(cameraid); if(!camera) { ALOGE("Couldn't create instance of CameraHal class"); rv = -ENOMEM; goto fail; } if(properties && (camera->initialize(properties) != android::NO_ERROR)) { ALOGE("Couldn't initialize camera instance"); rv = -ENODEV; goto fail; } gCameraHals[cameraid] = camera; gCamerasOpen++; } return rv; fail: if(camera_device) { free(camera_device); camera_device = NULL; } if(camera_ops) { free(camera_ops); camera_ops = NULL; } if(camera) { delete camera; camera = NULL; } *device = NULL; return rv; } int camera_get_number_of_cameras(void) { int num_cameras = MAX_CAMERAS_SUPPORTED; // TODO(XXX): Ducati is not loaded yet when camera service gets here // Lets revisit this later to see if we can somehow get this working #if 0 // this going to be the first call from camera service // initialize camera properties here... if(gCameraProperties.initialize() != android::NO_ERROR) { CAMHAL_LOGEA("Unable to create or initialize CameraProperties"); return NULL; } num_cameras = gCameraProperties.camerasSupported(); #endif return num_cameras; } int camera_get_camera_info(int camera_id, struct camera_info *info) { int rv = 0; int face_value = CAMERA_FACING_BACK; int orientation = 0; const char *valstr = NULL; android::CameraProperties::Properties* properties = NULL; // this going to be the first call from camera service // initialize camera properties here... if(gCameraProperties.initialize() != android::NO_ERROR) { CAMHAL_LOGEA("Unable to create or initialize CameraProperties"); return NULL; } //Get camera properties for camera index if(gCameraProperties.getProperties(camera_id, &properties) < 0) { ALOGE("Couldn't get camera properties"); rv = -EINVAL; goto end; } if(properties) { valstr = properties->get(android::CameraProperties::FACING_INDEX); if(valstr != NULL) { if (strcmp(valstr, (const char *) android::TICameraParameters::FACING_FRONT) == 0) { face_value = CAMERA_FACING_FRONT; } else if (strcmp(valstr, (const char *) android::TICameraParameters::FACING_BACK) == 0) { face_value = CAMERA_FACING_BACK; } } valstr = properties->get(android::CameraProperties::ORIENTATION_INDEX); if(valstr != NULL) { orientation = atoi(valstr); } } else { CAMHAL_LOGEB("getProperties() returned a NULL property set for Camera id %d", camera_id); } info->facing = face_value; info->orientation = orientation; end: return rv; }