/*
* Copyright (C) 2011 The Android Open Source 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.
*/
/*
* Contains implementation of a class EmulatedCamera that encapsulates
* functionality common to all emulated cameras ("fake", "webcam", "video file",
* etc.). Instances of this class (for each emulated camera) are created during
* the construction of the EmulatedCameraFactory instance. This class serves as
* an entry point for all camera API calls that defined by camera_device_ops_t
* API.
*/
#include "guest/libs/platform_support/api_level_fixes.h"
#define LOG_NDEBUG 0
#define LOG_TAG "EmulatedCamera_Camera"
#include <cutils/log.h>
#include "EmulatedCamera.h"
//#include "EmulatedFakeCameraDevice.h"
#include "Converters.h"
/* Defines whether we should trace parameter changes. */
#define DEBUG_PARAM 1
namespace android {
namespace {
const char* kSupportedFlashModes[] = {
CameraParameters::FLASH_MODE_OFF, CameraParameters::FLASH_MODE_AUTO,
CameraParameters::FLASH_MODE_ON, CameraParameters::FLASH_MODE_RED_EYE,
CameraParameters::FLASH_MODE_TORCH, NULL};
std::string BuildParameterValue(const char** value_array) {
std::string result;
for (int index = 0; value_array[index] != NULL; ++index) {
if (index) result.append(",");
result.append(value_array[index]);
}
return result;
}
bool CheckParameterValue(const char* value, const char** supported_values) {
for (int index = 0; supported_values[index] != NULL; ++index) {
if (!strcmp(value, supported_values[index])) return true;
}
return false;
}
} // namespace
#if DEBUG_PARAM
/* Calculates and logs parameter changes.
* Param:
* current - Current set of camera parameters.
* new_par - String representation of new parameters.
*/
static void PrintParamDiff(const CameraParameters& current,
const char* new_par);
#else
#define PrintParamDiff(current, new_par) (void(0))
#endif /* DEBUG_PARAM */
EmulatedCamera::EmulatedCamera(int cameraId, struct hw_module_t* module)
: EmulatedBaseCamera(cameraId, HARDWARE_DEVICE_API_VERSION(1, 0), &common,
module),
mPreviewWindow(),
mCallbackNotifier() {
/* camera_device v1 fields. */
common.close = EmulatedCamera::close;
ops = &mDeviceOps;
priv = this;
}
EmulatedCamera::~EmulatedCamera() {}
/****************************************************************************
* Public API
***************************************************************************/
status_t EmulatedCamera::Initialize(const cvd::CameraDefinition&) {
/* Preview formats supported by this HAL. */
char preview_formats[1024];
snprintf(preview_formats, sizeof(preview_formats), "%s,%s,%s",
CameraParameters::PIXEL_FORMAT_YUV420SP,
CameraParameters::PIXEL_FORMAT_YUV420P,
CameraParameters::PIXEL_FORMAT_RGBA8888);
/*
* Fake required parameters.
*/
mParameters.set(CameraParameters::KEY_SUPPORTED_JPEG_THUMBNAIL_SIZES,
"320x240,0x0");
mParameters.set(CameraParameters::KEY_JPEG_THUMBNAIL_WIDTH, "512");
mParameters.set(CameraParameters::KEY_JPEG_THUMBNAIL_HEIGHT, "384");
mParameters.set(CameraParameters::KEY_JPEG_QUALITY, "90");
mParameters.set(CameraParameters::KEY_FOCAL_LENGTH, "4.31");
mParameters.set(CameraParameters::KEY_HORIZONTAL_VIEW_ANGLE, "54.8");
mParameters.set(CameraParameters::KEY_VERTICAL_VIEW_ANGLE, "42.5");
mParameters.set(CameraParameters::KEY_JPEG_THUMBNAIL_QUALITY, "90");
/* Preview format settings used here are related to panoramic view only. It's
* not related to the preview window that works only with RGB frames, which
* is explicitly stated when set_buffers_geometry is called on the preview
* window object. */
mParameters.set(CameraParameters::KEY_SUPPORTED_PREVIEW_FORMATS,
preview_formats);
mParameters.setPreviewFormat(CameraParameters::PIXEL_FORMAT_YUV420SP);
/* We don't relay on the actual frame rates supported by the camera device,
* since we will emulate them through timeouts in the emulated camera device
* worker thread. */
mParameters.set(CameraParameters::KEY_SUPPORTED_PREVIEW_FRAME_RATES,
"30,24,20,15,10,5");
mParameters.set(CameraParameters::KEY_SUPPORTED_PREVIEW_FPS_RANGE,
"(5000,30000),(15000,15000),(30000,30000)");
mParameters.set(CameraParameters::KEY_PREVIEW_FPS_RANGE, "5000,30000");
mParameters.setPreviewFrameRate(30000);
/* Only PIXEL_FORMAT_YUV420P is accepted by video framework in emulator! */
mParameters.set(CameraParameters::KEY_VIDEO_FRAME_FORMAT,
CameraParameters::PIXEL_FORMAT_YUV420P);
mParameters.set(CameraParameters::KEY_SUPPORTED_PICTURE_FORMATS,
CameraParameters::PIXEL_FORMAT_JPEG);
mParameters.setPictureFormat(CameraParameters::PIXEL_FORMAT_JPEG);
/* Set exposure compensation. */
mParameters.set(CameraParameters::KEY_MAX_EXPOSURE_COMPENSATION, "6");
mParameters.set(CameraParameters::KEY_MIN_EXPOSURE_COMPENSATION, "-6");
mParameters.set(CameraParameters::KEY_EXPOSURE_COMPENSATION_STEP, "0.5");
mParameters.set(CameraParameters::KEY_EXPOSURE_COMPENSATION, "0");
/* Sets the white balance modes and the device-dependent scale factors. */
char supported_white_balance[1024];
snprintf(supported_white_balance, sizeof(supported_white_balance),
"%s,%s,%s,%s", CameraParameters::WHITE_BALANCE_AUTO,
CameraParameters::WHITE_BALANCE_INCANDESCENT,
CameraParameters::WHITE_BALANCE_DAYLIGHT,
CameraParameters::WHITE_BALANCE_TWILIGHT);
mParameters.set(CameraParameters::KEY_SUPPORTED_WHITE_BALANCE,
supported_white_balance);
mParameters.set(CameraParameters::KEY_WHITE_BALANCE,
CameraParameters::WHITE_BALANCE_AUTO);
getCameraDevice()->initializeWhiteBalanceModes(
CameraParameters::WHITE_BALANCE_AUTO, 1.0f, 1.0f);
getCameraDevice()->initializeWhiteBalanceModes(
CameraParameters::WHITE_BALANCE_INCANDESCENT, 1.38f, 0.60f);
getCameraDevice()->initializeWhiteBalanceModes(
CameraParameters::WHITE_BALANCE_DAYLIGHT, 1.09f, 0.92f);
getCameraDevice()->initializeWhiteBalanceModes(
CameraParameters::WHITE_BALANCE_TWILIGHT, 0.92f, 1.22f);
getCameraDevice()->setWhiteBalanceMode(CameraParameters::WHITE_BALANCE_AUTO);
/*
* Not supported features
*/
mParameters.set(CameraParameters::KEY_SUPPORTED_FOCUS_MODES,
CameraParameters::FOCUS_MODE_FIXED);
mParameters.set(CameraParameters::KEY_FOCUS_MODE,
CameraParameters::FOCUS_MODE_FIXED);
mParameters.set(CameraParameters::KEY_SUPPORTED_FLASH_MODES,
BuildParameterValue(kSupportedFlashModes).c_str());
mParameters.set(CameraParameters::KEY_FLASH_MODE,
CameraParameters::FLASH_MODE_OFF);
mParameters.set(CameraParameters::KEY_FOCUS_DISTANCES, "0.1,0.1,0.1");
mParameters.set(CameraParameters::KEY_MAX_NUM_DETECTED_FACES_HW, "0");
mParameters.set(CameraParameters::KEY_MAX_NUM_DETECTED_FACES_SW, "0");
mParameters.set(CameraParameters::KEY_ZOOM_RATIOS, "100");
mParameters.set(CameraParameters::KEY_ZOOM_SUPPORTED,
CameraParameters::FALSE);
mParameters.set(CameraParameters::KEY_SMOOTH_ZOOM_SUPPORTED,
CameraParameters::FALSE);
mParameters.set(CameraParameters::KEY_ZOOM, "0");
mParameters.set(CameraParameters::KEY_MAX_ZOOM, "0");
return NO_ERROR;
}
void EmulatedCamera::onNextFrameAvailable(const void* frame, nsecs_t timestamp,
EmulatedCameraDevice* camera_dev) {
/* Notify the preview window first. */
mPreviewWindow.onNextFrameAvailable(frame, timestamp, camera_dev);
/* Notify callback notifier next. */
mCallbackNotifier.onNextFrameAvailable(frame, timestamp, camera_dev);
}
void EmulatedCamera::onCameraDeviceError(int err) {
/* Errors are reported through the callback notifier */
mCallbackNotifier.onCameraDeviceError(err);
}
void EmulatedCamera::onCameraFocusAcquired() {
mCallbackNotifier.onCameraFocusAcquired();
}
/****************************************************************************
* Camera API implementation.
***************************************************************************/
status_t EmulatedCamera::connectCamera(hw_device_t** device) {
ALOGV("%s", __FUNCTION__);
status_t res = EINVAL;
EmulatedCameraDevice* const camera_dev = getCameraDevice();
ALOGE_IF(camera_dev == NULL, "%s: No camera device instance.", __FUNCTION__);
if (camera_dev != NULL) {
/* Connect to the camera device. */
res = getCameraDevice()->connectDevice();
if (res == NO_ERROR) {
*device = &common;
}
}
return -res;
}
status_t EmulatedCamera::closeCamera() {
ALOGV("%s", __FUNCTION__);
return cleanupCamera();
}
status_t EmulatedCamera::getCameraInfo(struct camera_info* info) {
ALOGV("%s", __FUNCTION__);
const char* valstr = NULL;
valstr = mParameters.get(EmulatedCamera::FACING_KEY);
if (valstr != NULL) {
if (strcmp(valstr, EmulatedCamera::FACING_FRONT) == 0) {
info->facing = CAMERA_FACING_FRONT;
} else if (strcmp(valstr, EmulatedCamera::FACING_BACK) == 0) {
info->facing = CAMERA_FACING_BACK;
}
} else {
info->facing = CAMERA_FACING_BACK;
}
valstr = mParameters.get(EmulatedCamera::ORIENTATION_KEY);
if (valstr != NULL) {
info->orientation = atoi(valstr);
} else {
info->orientation = 0;
}
#if VSOC_PLATFORM_SDK_AFTER(L_MR1)
info->resource_cost = 100;
info->conflicting_devices = NULL;
info->conflicting_devices_length = 0;
#endif
return EmulatedBaseCamera::getCameraInfo(info);
}
const CameraParameters* EmulatedCamera::getCameraParameters() {
return &mParameters;
}
status_t EmulatedCamera::setPreviewWindow(struct preview_stream_ops* window) {
/* Callback should return a negative errno. */
return -mPreviewWindow.setPreviewWindow(window,
mParameters.getPreviewFrameRate());
}
void EmulatedCamera::setCallbacks(
camera_notify_callback notify_cb, camera_data_callback data_cb,
camera_data_timestamp_callback data_cb_timestamp,
camera_request_memory get_memory, void* user) {
mCallbackNotifier.setCallbacks(notify_cb, data_cb, data_cb_timestamp,
get_memory, user);
}
void EmulatedCamera::enableMsgType(int32_t msg_type) {
mCallbackNotifier.enableMessage(msg_type);
}
void EmulatedCamera::disableMsgType(int32_t msg_type) {
mCallbackNotifier.disableMessage(msg_type);
}
int EmulatedCamera::isMsgTypeEnabled(int32_t msg_type) {
return mCallbackNotifier.isMessageEnabled(msg_type);
}
status_t EmulatedCamera::startPreview() {
/* Callback should return a negative errno. */
return -doStartPreview();
}
void EmulatedCamera::stopPreview() { doStopPreview(); }
int EmulatedCamera::isPreviewEnabled() {
return mPreviewWindow.isPreviewEnabled();
}
status_t EmulatedCamera::storeMetaDataInBuffers(int enable) {
/* Callback should return a negative errno. */
return -mCallbackNotifier.storeMetaDataInBuffers(enable);
}
status_t EmulatedCamera::startRecording() {
/* Callback should return a negative errno. */
return -mCallbackNotifier.enableVideoRecording(
mParameters.getPreviewFrameRate());
}
void EmulatedCamera::stopRecording() {
mCallbackNotifier.disableVideoRecording();
}
int EmulatedCamera::isRecordingEnabled() {
return mCallbackNotifier.isVideoRecordingEnabled();
}
void EmulatedCamera::releaseRecordingFrame(const void* opaque) {
mCallbackNotifier.releaseRecordingFrame(opaque);
}
status_t EmulatedCamera::setAutoFocus() {
ALOGV("%s", __FUNCTION__);
/* Trigger auto-focus. Focus response cannot be sent directly from here. */
getCameraDevice()->startAutoFocus();
/* TODO: Future enhancements. */
return NO_ERROR;
}
status_t EmulatedCamera::cancelAutoFocus() {
ALOGV("%s", __FUNCTION__);
/* TODO: Future enhancements. */
return NO_ERROR;
}
status_t EmulatedCamera::takePicture() {
ALOGV("%s", __FUNCTION__);
status_t res;
int width, height;
uint32_t org_fmt;
/* Collect frame info for the picture. */
mParameters.getPictureSize(&width, &height);
const char* pix_fmt = mParameters.getPictureFormat();
if (strcmp(pix_fmt, CameraParameters::PIXEL_FORMAT_YUV420P) == 0) {
org_fmt = V4L2_PIX_FMT_YUV420;
} else if (strcmp(pix_fmt, CameraParameters::PIXEL_FORMAT_RGBA8888) == 0) {
org_fmt = V4L2_PIX_FMT_RGB32;
} else if (strcmp(pix_fmt, CameraParameters::PIXEL_FORMAT_YUV420SP) == 0) {
org_fmt = V4L2_PIX_FMT_NV21;
} else if (strcmp(pix_fmt, CameraParameters::PIXEL_FORMAT_JPEG) == 0) {
/* We only have JPEG converted for NV21 format. */
org_fmt = V4L2_PIX_FMT_NV21;
} else {
ALOGE("%s: Unsupported pixel format %s", __FUNCTION__, pix_fmt);
return EINVAL;
}
/* Get JPEG quality. */
int jpeg_quality = mParameters.getInt(CameraParameters::KEY_JPEG_QUALITY);
if (jpeg_quality <= 0) {
jpeg_quality = 90; /* Fall back to default. */
}
/*
* Make sure preview is not running, and device is stopped before taking
* picture.
*/
const bool preview_on = mPreviewWindow.isPreviewEnabled();
if (preview_on) {
doStopPreview();
}
/* Camera device should have been stopped when the shutter message has been
* enabled. */
EmulatedCameraDevice* const camera_dev = getCameraDevice();
if (camera_dev->isStarted()) {
ALOGW("%s: Camera device is started", __FUNCTION__);
camera_dev->stopDeliveringFrames();
camera_dev->stopDevice();
}
/* Compute target FPS rate.
* Pretend to simulate generation of (max_fps_rate) */
int min_fps_rate, max_fps_rate;
mParameters.getPreviewFpsRange(&min_fps_rate, &max_fps_rate);
/*
* Take the picture now.
*/
/* Start camera device for the picture frame. */
ALOGD("Starting camera for picture: %.4s(%s)[%dx%d]",
reinterpret_cast<const char*>(&org_fmt), pix_fmt, width, height);
res = camera_dev->startDevice(width, height, org_fmt, max_fps_rate);
if (res != NO_ERROR) {
if (preview_on) {
doStartPreview();
}
return res;
}
/* Deliver one frame only. */
mCallbackNotifier.setJpegQuality(jpeg_quality);
mCallbackNotifier.setTakingPicture(true);
res = camera_dev->startDeliveringFrames(true);
if (res != NO_ERROR) {
mCallbackNotifier.setTakingPicture(false);
if (preview_on) {
doStartPreview();
}
}
return res;
}
status_t EmulatedCamera::cancelPicture() {
ALOGV("%s", __FUNCTION__);
return NO_ERROR;
}
status_t EmulatedCamera::setParameters(const char* parms) {
ALOGV("%s", __FUNCTION__);
PrintParamDiff(mParameters, parms);
CameraParameters new_param;
String8 str8_param(parms);
new_param.unflatten(str8_param);
/*
* Check if requested dimensions are valid.
*/
if (!CheckParameterValue(new_param.get(CameraParameters::KEY_FLASH_MODE),
kSupportedFlashModes)) {
ALOGE("%s: Unsupported flash mode: %s", __FUNCTION__,
new_param.get(CameraParameters::KEY_FLASH_MODE));
return -EINVAL;
}
if (strcmp(new_param.get(CameraParameters::KEY_FOCUS_MODE),
CameraParameters::FOCUS_MODE_FIXED)) {
ALOGE("%s: Unsupported flash mode: %s", __FUNCTION__,
new_param.get(CameraParameters::KEY_FOCUS_MODE));
return -EINVAL;
}
int preview_width, preview_height;
new_param.getPreviewSize(&preview_width, &preview_height);
if (preview_width <= 0 || preview_height <= 0) return -EINVAL;
/*
* Check for new exposure compensation parameter.
*/
int new_exposure_compensation =
new_param.getInt(CameraParameters::KEY_EXPOSURE_COMPENSATION);
const int min_exposure_compensation =
new_param.getInt(CameraParameters::KEY_MIN_EXPOSURE_COMPENSATION);
const int max_exposure_compensation =
new_param.getInt(CameraParameters::KEY_MAX_EXPOSURE_COMPENSATION);
// Checks if the exposure compensation change is supported.
if ((min_exposure_compensation != 0) || (max_exposure_compensation != 0)) {
if (new_exposure_compensation > max_exposure_compensation) {
new_exposure_compensation = max_exposure_compensation;
}
if (new_exposure_compensation < min_exposure_compensation) {
new_exposure_compensation = min_exposure_compensation;
}
const int current_exposure_compensation =
mParameters.getInt(CameraParameters::KEY_EXPOSURE_COMPENSATION);
if (current_exposure_compensation != new_exposure_compensation) {
const float exposure_value =
new_exposure_compensation *
new_param.getFloat(CameraParameters::KEY_EXPOSURE_COMPENSATION_STEP);
getCameraDevice()->setExposureCompensation(exposure_value);
}
}
const char* new_white_balance =
new_param.get(CameraParameters::KEY_WHITE_BALANCE);
const char* supported_white_balance =
new_param.get(CameraParameters::KEY_SUPPORTED_WHITE_BALANCE);
if ((supported_white_balance != NULL) && (new_white_balance != NULL) &&
(strstr(supported_white_balance, new_white_balance) != NULL)) {
const char* current_white_balance =
mParameters.get(CameraParameters::KEY_WHITE_BALANCE);
if ((current_white_balance == NULL) ||
(strcmp(current_white_balance, new_white_balance) != 0)) {
ALOGV("Setting white balance to %s", new_white_balance);
getCameraDevice()->setWhiteBalanceMode(new_white_balance);
}
}
mParameters = new_param;
return NO_ERROR;
}
/* A dumb variable indicating "no params" / error on the exit from
* EmulatedCamera::getParameters(). */
static char lNoParam = '\0';
char* EmulatedCamera::getParameters() {
String8 params(mParameters.flatten());
char* ret_str =
reinterpret_cast<char*>(malloc(sizeof(char) * (params.length() + 1)));
memset(ret_str, 0, params.length() + 1);
if (ret_str != NULL) {
strncpy(ret_str, params.string(), params.length() + 1);
return ret_str;
} else {
ALOGE("%s: Unable to allocate string for %s", __FUNCTION__,
params.string());
/* Apparently, we can't return NULL fron this routine. */
return &lNoParam;
}
}
void EmulatedCamera::putParameters(char* params) {
/* This method simply frees parameters allocated in getParameters(). */
if (params != NULL && params != &lNoParam) {
free(params);
}
}
status_t EmulatedCamera::sendCommand(int32_t cmd, int32_t arg1, int32_t arg2) {
ALOGV("%s: cmd = %d, arg1 = %d, arg2 = %d", __FUNCTION__, cmd, arg1, arg2);
switch (cmd) {
case CAMERA_CMD_START_FACE_DETECTION:
case CAMERA_CMD_STOP_FACE_DETECTION:
return -EINVAL;
}
/* TODO: Future enhancements. */
return 0;
}
void EmulatedCamera::releaseCamera() {
ALOGV("%s", __FUNCTION__);
cleanupCamera();
}
status_t EmulatedCamera::dumpCamera(int /*fd*/) {
ALOGV("%s", __FUNCTION__);
/* TODO: Future enhancements. */
return -EINVAL;
}
/****************************************************************************
* Preview management.
***************************************************************************/
status_t EmulatedCamera::doStartPreview() {
ALOGV("%s", __FUNCTION__);
EmulatedCameraDevice* camera_dev = getCameraDevice();
if (camera_dev->isStarted()) {
camera_dev->stopDeliveringFrames();
camera_dev->stopDevice();
}
status_t res = mPreviewWindow.startPreview();
if (res != NO_ERROR) {
return res;
}
/* Make sure camera device is connected. */
if (!camera_dev->isConnected()) {
res = camera_dev->connectDevice();
if (res != NO_ERROR) {
mPreviewWindow.stopPreview();
return res;
}
}
int width, height;
/* Lets see what should we use for frame width, and height. */
if (mParameters.get(CameraParameters::KEY_VIDEO_SIZE) != NULL) {
mParameters.getVideoSize(&width, &height);
} else {
mParameters.getPreviewSize(&width, &height);
}
/* Lets see what should we use for the frame pixel format. Note that there
* are two parameters that define pixel formats for frames sent to the
* application via notification callbacks:
* - KEY_VIDEO_FRAME_FORMAT, that is used when recording video, and
* - KEY_PREVIEW_FORMAT, that is used for preview frame notification.
* We choose one or the other, depending on "recording-hint" property set by
* the framework that indicating intention: video, or preview. */
const char* pix_fmt = NULL;
const char* is_video = mParameters.get(EmulatedCamera::RECORDING_HINT_KEY);
if (is_video == NULL) {
is_video = CameraParameters::FALSE;
}
if (strcmp(is_video, CameraParameters::TRUE) == 0) {
/* Video recording is requested. Lets see if video frame format is set. */
pix_fmt = mParameters.get(CameraParameters::KEY_VIDEO_FRAME_FORMAT);
}
/* If this was not video recording, or video frame format is not set, lets
* use preview pixel format for the main framebuffer. */
if (pix_fmt == NULL) {
pix_fmt = mParameters.getPreviewFormat();
}
if (pix_fmt == NULL) {
ALOGE("%s: Unable to obtain video format", __FUNCTION__);
mPreviewWindow.stopPreview();
return EINVAL;
}
/* Convert framework's pixel format to the FOURCC one. */
uint32_t org_fmt;
if (strcmp(pix_fmt, CameraParameters::PIXEL_FORMAT_YUV420P) == 0) {
org_fmt = V4L2_PIX_FMT_YUV420;
} else if (strcmp(pix_fmt, CameraParameters::PIXEL_FORMAT_RGBA8888) == 0) {
org_fmt = V4L2_PIX_FMT_RGB32;
} else if (strcmp(pix_fmt, CameraParameters::PIXEL_FORMAT_YUV420SP) == 0) {
org_fmt = V4L2_PIX_FMT_NV21;
} else {
ALOGE("%s: Unsupported pixel format %s", __FUNCTION__, pix_fmt);
mPreviewWindow.stopPreview();
return EINVAL;
}
/* Fetch the desired frame rate. */
int min_fps_rate, max_fps_rate;
mParameters.getPreviewFpsRange(&min_fps_rate, &max_fps_rate);
ALOGD("Starting camera: %dx%d -> %.4s(%s)", width, height,
reinterpret_cast<const char*>(&org_fmt), pix_fmt);
res = camera_dev->startDevice(width, height, org_fmt, max_fps_rate);
if (res != NO_ERROR) {
mPreviewWindow.stopPreview();
return res;
}
res = camera_dev->startDeliveringFrames(false);
if (res != NO_ERROR) {
camera_dev->stopDevice();
mPreviewWindow.stopPreview();
}
return res;
}
status_t EmulatedCamera::doStopPreview() {
ALOGV("%s", __FUNCTION__);
status_t res = NO_ERROR;
if (mPreviewWindow.isPreviewEnabled()) {
/* Stop the camera. */
if (getCameraDevice()->isStarted()) {
getCameraDevice()->stopDeliveringFrames();
res = getCameraDevice()->stopDevice();
}
if (res == NO_ERROR) {
/* Disable preview as well. */
mPreviewWindow.stopPreview();
}
}
return NO_ERROR;
}
/****************************************************************************
* Private API.
***************************************************************************/
status_t EmulatedCamera::cleanupCamera() {
status_t res = NO_ERROR;
/* If preview is running - stop it. */
res = doStopPreview();
if (res != NO_ERROR) {
return -res;
}
/* Stop and disconnect the camera device. */
EmulatedCameraDevice* const camera_dev = getCameraDevice();
if (camera_dev != NULL) {
if (camera_dev->isStarted()) {
camera_dev->stopDeliveringFrames();
res = camera_dev->stopDevice();
if (res != NO_ERROR) {
return -res;
}
}
if (camera_dev->isConnected()) {
res = camera_dev->disconnectDevice();
if (res != NO_ERROR) {
return -res;
}
}
}
mCallbackNotifier.cleanupCBNotifier();
return NO_ERROR;
}
/****************************************************************************
* Camera API callbacks as defined by camera_device_ops structure.
*
* Callbacks here simply dispatch the calls to an appropriate method inside
* EmulatedCamera instance, defined by the 'dev' parameter.
***************************************************************************/
int EmulatedCamera::set_preview_window(struct camera_device* dev,
struct preview_stream_ops* window) {
EmulatedCamera* ec = reinterpret_cast<EmulatedCamera*>(dev->priv);
if (ec == NULL) {
ALOGE("%s: Unexpected NULL camera device", __FUNCTION__);
return -EINVAL;
}
return ec->setPreviewWindow(window);
}
void EmulatedCamera::set_callbacks(
struct camera_device* dev, camera_notify_callback notify_cb,
camera_data_callback data_cb,
camera_data_timestamp_callback data_cb_timestamp,
camera_request_memory get_memory, void* user) {
EmulatedCamera* ec = reinterpret_cast<EmulatedCamera*>(dev->priv);
if (ec == NULL) {
ALOGE("%s: Unexpected NULL camera device", __FUNCTION__);
return;
}
ec->setCallbacks(notify_cb, data_cb, data_cb_timestamp, get_memory, user);
}
void EmulatedCamera::enable_msg_type(struct camera_device* dev,
int32_t msg_type) {
EmulatedCamera* ec = reinterpret_cast<EmulatedCamera*>(dev->priv);
if (ec == NULL) {
ALOGE("%s: Unexpected NULL camera device", __FUNCTION__);
return;
}
ec->enableMsgType(msg_type);
}
void EmulatedCamera::disable_msg_type(struct camera_device* dev,
int32_t msg_type) {
EmulatedCamera* ec = reinterpret_cast<EmulatedCamera*>(dev->priv);
if (ec == NULL) {
ALOGE("%s: Unexpected NULL camera device", __FUNCTION__);
return;
}
ec->disableMsgType(msg_type);
}
int EmulatedCamera::msg_type_enabled(struct camera_device* dev,
int32_t msg_type) {
EmulatedCamera* ec = reinterpret_cast<EmulatedCamera*>(dev->priv);
if (ec == NULL) {
ALOGE("%s: Unexpected NULL camera device", __FUNCTION__);
return -EINVAL;
}
return ec->isMsgTypeEnabled(msg_type);
}
int EmulatedCamera::start_preview(struct camera_device* dev) {
EmulatedCamera* ec = reinterpret_cast<EmulatedCamera*>(dev->priv);
if (ec == NULL) {
ALOGE("%s: Unexpected NULL camera device", __FUNCTION__);
return -EINVAL;
}
return ec->startPreview();
}
void EmulatedCamera::stop_preview(struct camera_device* dev) {
EmulatedCamera* ec = reinterpret_cast<EmulatedCamera*>(dev->priv);
if (ec == NULL) {
ALOGE("%s: Unexpected NULL camera device", __FUNCTION__);
return;
}
ec->stopPreview();
}
int EmulatedCamera::preview_enabled(struct camera_device* dev) {
EmulatedCamera* ec = reinterpret_cast<EmulatedCamera*>(dev->priv);
if (ec == NULL) {
ALOGE("%s: Unexpected NULL camera device", __FUNCTION__);
return -EINVAL;
}
return ec->isPreviewEnabled();
}
int EmulatedCamera::store_meta_data_in_buffers(struct camera_device* dev,
int enable) {
EmulatedCamera* ec = reinterpret_cast<EmulatedCamera*>(dev->priv);
if (ec == NULL) {
ALOGE("%s: Unexpected NULL camera device", __FUNCTION__);
return -EINVAL;
}
return ec->storeMetaDataInBuffers(enable);
}
int EmulatedCamera::start_recording(struct camera_device* dev) {
EmulatedCamera* ec = reinterpret_cast<EmulatedCamera*>(dev->priv);
if (ec == NULL) {
ALOGE("%s: Unexpected NULL camera device", __FUNCTION__);
return -EINVAL;
}
return ec->startRecording();
}
void EmulatedCamera::stop_recording(struct camera_device* dev) {
EmulatedCamera* ec = reinterpret_cast<EmulatedCamera*>(dev->priv);
if (ec == NULL) {
ALOGE("%s: Unexpected NULL camera device", __FUNCTION__);
return;
}
ec->stopRecording();
}
int EmulatedCamera::recording_enabled(struct camera_device* dev) {
EmulatedCamera* ec = reinterpret_cast<EmulatedCamera*>(dev->priv);
if (ec == NULL) {
ALOGE("%s: Unexpected NULL camera device", __FUNCTION__);
return -EINVAL;
}
return ec->isRecordingEnabled();
}
void EmulatedCamera::release_recording_frame(struct camera_device* dev,
const void* opaque) {
EmulatedCamera* ec = reinterpret_cast<EmulatedCamera*>(dev->priv);
if (ec == NULL) {
ALOGE("%s: Unexpected NULL camera device", __FUNCTION__);
return;
}
ec->releaseRecordingFrame(opaque);
}
int EmulatedCamera::auto_focus(struct camera_device* dev) {
EmulatedCamera* ec = reinterpret_cast<EmulatedCamera*>(dev->priv);
if (ec == NULL) {
ALOGE("%s: Unexpected NULL camera device", __FUNCTION__);
return -EINVAL;
}
return ec->setAutoFocus();
}
int EmulatedCamera::cancel_auto_focus(struct camera_device* dev) {
EmulatedCamera* ec = reinterpret_cast<EmulatedCamera*>(dev->priv);
if (ec == NULL) {
ALOGE("%s: Unexpected NULL camera device", __FUNCTION__);
return -EINVAL;
}
return ec->cancelAutoFocus();
}
int EmulatedCamera::take_picture(struct camera_device* dev) {
EmulatedCamera* ec = reinterpret_cast<EmulatedCamera*>(dev->priv);
if (ec == NULL) {
ALOGE("%s: Unexpected NULL camera device", __FUNCTION__);
return -EINVAL;
}
return ec->takePicture();
}
int EmulatedCamera::cancel_picture(struct camera_device* dev) {
EmulatedCamera* ec = reinterpret_cast<EmulatedCamera*>(dev->priv);
if (ec == NULL) {
ALOGE("%s: Unexpected NULL camera device", __FUNCTION__);
return -EINVAL;
}
return ec->cancelPicture();
}
int EmulatedCamera::set_parameters(struct camera_device* dev,
const char* parms) {
EmulatedCamera* ec = reinterpret_cast<EmulatedCamera*>(dev->priv);
if (ec == NULL) {
ALOGE("%s: Unexpected NULL camera device", __FUNCTION__);
return -EINVAL;
}
return ec->setParameters(parms);
}
char* EmulatedCamera::get_parameters(struct camera_device* dev) {
EmulatedCamera* ec = reinterpret_cast<EmulatedCamera*>(dev->priv);
if (ec == NULL) {
ALOGE("%s: Unexpected NULL camera device", __FUNCTION__);
return NULL;
}
return ec->getParameters();
}
void EmulatedCamera::put_parameters(struct camera_device* dev, char* params) {
EmulatedCamera* ec = reinterpret_cast<EmulatedCamera*>(dev->priv);
if (ec == NULL) {
ALOGE("%s: Unexpected NULL camera device", __FUNCTION__);
return;
}
ec->putParameters(params);
}
int EmulatedCamera::send_command(struct camera_device* dev, int32_t cmd,
int32_t arg1, int32_t arg2) {
EmulatedCamera* ec = reinterpret_cast<EmulatedCamera*>(dev->priv);
if (ec == NULL) {
ALOGE("%s: Unexpected NULL camera device", __FUNCTION__);
return -EINVAL;
}
return ec->sendCommand(cmd, arg1, arg2);
}
void EmulatedCamera::release(struct camera_device* dev) {
EmulatedCamera* ec = reinterpret_cast<EmulatedCamera*>(dev->priv);
if (ec == NULL) {
ALOGE("%s: Unexpected NULL camera device", __FUNCTION__);
return;
}
ec->releaseCamera();
}
int EmulatedCamera::dump(struct camera_device* dev, int fd) {
EmulatedCamera* ec = reinterpret_cast<EmulatedCamera*>(dev->priv);
if (ec == NULL) {
ALOGE("%s: Unexpected NULL camera device", __FUNCTION__);
return -EINVAL;
}
return ec->dumpCamera(fd);
}
int EmulatedCamera::close(struct hw_device_t* device) {
EmulatedCamera* ec = reinterpret_cast<EmulatedCamera*>(
reinterpret_cast<struct camera_device*>(device)->priv);
if (ec == NULL) {
ALOGE("%s: Unexpected NULL camera device", __FUNCTION__);
return -EINVAL;
}
return ec->closeCamera();
}
/****************************************************************************
* Static initializer for the camera callback API
****************************************************************************/
camera_device_ops_t EmulatedCamera::mDeviceOps = {
EmulatedCamera::set_preview_window,
EmulatedCamera::set_callbacks,
EmulatedCamera::enable_msg_type,
EmulatedCamera::disable_msg_type,
EmulatedCamera::msg_type_enabled,
EmulatedCamera::start_preview,
EmulatedCamera::stop_preview,
EmulatedCamera::preview_enabled,
EmulatedCamera::store_meta_data_in_buffers,
EmulatedCamera::start_recording,
EmulatedCamera::stop_recording,
EmulatedCamera::recording_enabled,
EmulatedCamera::release_recording_frame,
EmulatedCamera::auto_focus,
EmulatedCamera::cancel_auto_focus,
EmulatedCamera::take_picture,
EmulatedCamera::cancel_picture,
EmulatedCamera::set_parameters,
EmulatedCamera::get_parameters,
EmulatedCamera::put_parameters,
EmulatedCamera::send_command,
EmulatedCamera::release,
EmulatedCamera::dump};
/****************************************************************************
* Common keys
***************************************************************************/
const char EmulatedCamera::FACING_KEY[] = "prop-facing";
const char EmulatedCamera::ORIENTATION_KEY[] = "prop-orientation";
const char EmulatedCamera::RECORDING_HINT_KEY[] = "recording-hint";
/****************************************************************************
* Common string values
***************************************************************************/
const char EmulatedCamera::FACING_BACK[] = "back";
const char EmulatedCamera::FACING_FRONT[] = "front";
/****************************************************************************
* Parameter debugging helpers
***************************************************************************/
#if DEBUG_PARAM
static void PrintParamDiff(const CameraParameters& current,
const char* new_par) {
char tmp[2048];
const char* wrk = new_par;
/* Divided with ';' */
const char* next = strchr(wrk, ';');
while (next != NULL) {
snprintf(tmp, sizeof(tmp), "%.*s", (int)(intptr_t)(next - wrk), wrk);
/* in the form key=value */
char* val = strchr(tmp, '=');
if (val != NULL) {
*val = '\0';
val++;
const char* in_current = current.get(tmp);
if (in_current != NULL) {
if (strcmp(in_current, val)) {
ALOGD("=== Value changed: %s: %s -> %s", tmp, in_current, val);
}
} else {
ALOGD("+++ New parameter: %s=%s", tmp, val);
}
} else {
ALOGW("No value separator in %s", tmp);
}
wrk = next + 1;
next = strchr(wrk, ';');
}
}
#endif /* DEBUG_PARAM */
}; /* namespace android */