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/*
* 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;
}