Refactored emulated camera HAL to comply with code style
Change-Id: If57b536ae6b1f9bad4213630488591a3b3cc9fdd
This commit is contained in:
Vladimir Chtchetkine
246
tools/emulator/system/camera/CallbackNotifier.cpp
Executable file
246
tools/emulator/system/camera/CallbackNotifier.cpp
Executable file
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/*
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* Copyright (C) 2011 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/*
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* Contains implementation of a class CallbackNotifier that manages callbacks set
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* via set_callbacks, enable_msg_type, and disable_msg_type camera HAL API.
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*/
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#define LOG_NDEBUG 0
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#define LOG_TAG "EmulatedCamera_CallbackNotifier"
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#include <cutils/log.h>
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#include <media/stagefright/MetadataBufferType.h>
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#include "EmulatedCameraDevice.h"
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#include "CallbackNotifier.h"
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namespace android {
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/* String representation of camera messages. */
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static const char* lCameraMessages[] =
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{
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"CAMERA_MSG_ERROR",
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"CAMERA_MSG_SHUTTER",
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"CAMERA_MSG_FOCUS",
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"CAMERA_MSG_ZOOM",
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"CAMERA_MSG_PREVIEW_FRAME",
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"CAMERA_MSG_VIDEO_FRAME",
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"CAMERA_MSG_POSTVIEW_FRAME",
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"CAMERA_MSG_RAW_IMAGE",
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"CAMERA_MSG_COMPRESSED_IMAGE",
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"CAMERA_MSG_RAW_IMAGE_NOTIFY",
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"CAMERA_MSG_PREVIEW_METADATA"
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};
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static const int lCameraMessagesNum = sizeof(lCameraMessages) / sizeof(char*);
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/* Builds an array of strings for the given set of messages.
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* Param:
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* msg - Messages to get strings for,
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* strings - Array where to save strings
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* max - Maximum number of entries in the array.
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* Return:
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* Number of strings saved into the 'strings' array.
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*/
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static int GetMessageStrings(uint32_t msg, const char** strings, int max)
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{
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int index = 0;
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int out = 0;
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while (msg != 0 && out < max && index < lCameraMessagesNum) {
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while ((msg & 0x1) == 0 && index < lCameraMessagesNum) {
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msg >>= 1;
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index++;
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}
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if ((msg & 0x1) != 0 && index < lCameraMessagesNum) {
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strings[out] = lCameraMessages[index];
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out++;
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msg >>= 1;
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index++;
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}
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}
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return out;
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}
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/* Logs messages, enabled by the mask. */
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static void PrintMessages(uint32_t msg)
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{
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const char* strs[lCameraMessagesNum];
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const int translated = GetMessageStrings(msg, strs, lCameraMessagesNum);
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for (int n = 0; n < translated; n++) {
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LOGV(" %s", strs[n]);
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}
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}
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CallbackNotifier::CallbackNotifier()
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: mNotifyCB(NULL),
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mDataCB(NULL),
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mDdataCBTimestamp(NULL),
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mGetMemoryCB(NULL),
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mCBOpaque(NULL),
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mLastFrameTimestamp(0),
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mFrameRefreshFreq(0),
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mMessageEnabler(0),
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mVideoRecEnabled(false)
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{
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}
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CallbackNotifier::~CallbackNotifier()
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{
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}
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/****************************************************************************
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* Camera API
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***************************************************************************/
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void CallbackNotifier::setCallbacks(camera_notify_callback notify_cb,
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camera_data_callback data_cb,
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camera_data_timestamp_callback data_cb_timestamp,
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camera_request_memory get_memory,
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void* user)
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{
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LOGV("%s: %p, %p, %p, %p (%p)",
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__FUNCTION__, notify_cb, data_cb, data_cb_timestamp, get_memory, user);
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Mutex::Autolock locker(&mObjectLock);
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mNotifyCB = notify_cb;
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mDataCB = data_cb;
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mDdataCBTimestamp = data_cb_timestamp;
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mGetMemoryCB = get_memory;
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mCBOpaque = user;
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}
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void CallbackNotifier::enableMessage(uint msg_type)
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{
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LOGV("%s: msg_type = 0x%x", __FUNCTION__, msg_type);
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PrintMessages(msg_type);
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Mutex::Autolock locker(&mObjectLock);
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mMessageEnabler |= msg_type;
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LOGV("**** Currently enabled messages:");
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PrintMessages(mMessageEnabler);
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}
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void CallbackNotifier::disableMessage(uint msg_type)
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{
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LOGV("%s: msg_type = 0x%x", __FUNCTION__, msg_type);
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PrintMessages(msg_type);
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Mutex::Autolock locker(&mObjectLock);
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mMessageEnabler &= ~msg_type;
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LOGV("**** Currently enabled messages:");
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PrintMessages(mMessageEnabler);
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}
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int CallbackNotifier::isMessageEnabled(uint msg_type)
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{
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Mutex::Autolock locker(&mObjectLock);
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return mMessageEnabler & ~msg_type;
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}
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status_t CallbackNotifier::enableVideoRecording(int fps)
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{
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LOGV("%s: FPS = %d", __FUNCTION__, fps);
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Mutex::Autolock locker(&mObjectLock);
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mVideoRecEnabled = true;
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mLastFrameTimestamp = 0;
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mFrameRefreshFreq = 1000000000LL / fps;
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return NO_ERROR;
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}
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void CallbackNotifier::disableVideoRecording()
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{
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LOGV("%s:", __FUNCTION__);
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Mutex::Autolock locker(&mObjectLock);
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mVideoRecEnabled = false;
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mLastFrameTimestamp = 0;
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mFrameRefreshFreq = 0;
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}
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bool CallbackNotifier::isVideoRecordingEnabled()
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{
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Mutex::Autolock locker(&mObjectLock);
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return mVideoRecEnabled;
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}
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void CallbackNotifier::releaseRecordingFrame(const void* opaque)
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{
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/* We don't really have anything to release here, since we report video
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* frames by copying them directly to the camera memory. */
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}
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status_t CallbackNotifier::storeMetaDataInBuffers(bool enable)
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{
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/* Return INVALID_OPERATION means HAL does not support metadata. So HAL will
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* return actual frame data with CAMERA_MSG_VIDEO_FRRAME. Return
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* INVALID_OPERATION to mean metadata is not supported. */
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return INVALID_OPERATION;
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}
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/****************************************************************************
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* Public API
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***************************************************************************/
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void CallbackNotifier::cleanupCBNotifier()
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{
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Mutex::Autolock locker(&mObjectLock);
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mMessageEnabler = 0;
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mNotifyCB = NULL;
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mDataCB = NULL;
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mDdataCBTimestamp = NULL;
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mGetMemoryCB = NULL;
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mCBOpaque = NULL;
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mLastFrameTimestamp = 0;
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mFrameRefreshFreq = 0;
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mVideoRecEnabled = false;
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}
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void CallbackNotifier::onNextFrameAvailable(const void* frame,
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nsecs_t timestamp,
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EmulatedCameraDevice* camera_dev)
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{
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Mutex::Autolock locker(&mObjectLock);
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if ((mMessageEnabler & CAMERA_MSG_VIDEO_FRAME) != 0 &&
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mDdataCBTimestamp != NULL && mVideoRecEnabled &&
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isNewVideoFrameTime(timestamp)) {
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camera_memory_t* cam_buff =
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mGetMemoryCB(-1, camera_dev->getFrameBufferSize(), 1, NULL);
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if (NULL != cam_buff && NULL != cam_buff->data) {
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memcpy(cam_buff->data, frame, camera_dev->getFrameBufferSize());
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mDdataCBTimestamp(timestamp, CAMERA_MSG_VIDEO_FRAME,
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cam_buff, 0, mCBOpaque);
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} else {
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LOGE("%s: Memory failure in CAMERA_MSG_VIDEO_FRAME", __FUNCTION__);
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}
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}
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}
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/****************************************************************************
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* Private API
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***************************************************************************/
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bool CallbackNotifier::isNewVideoFrameTime(nsecs_t timestamp)
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{
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if ((timestamp - mLastFrameTimestamp) >= mFrameRefreshFreq) {
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mLastFrameTimestamp = timestamp;
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return true;
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}
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return false;
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}
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}; /* namespace android */
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