📄 camera.html
字号:
<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"/><title>Android - Porting Guide</title><script src="http://www.google.com/uds/api?file=uds.js&v=1.0&key=internal-codesite" type="text/javascript"></script><script src="http://code.google.com/js/jquery.js" type="text/javascript"></script><script type="text/javascript">var _tocPath_ = 'http://code.google.com/android/_toc.ezt';</script><script src="http://code.google.com/js/codesite.pack.01312008.js" type="text/javascript"></script><script language="JavaScript">function resizeHeight() { if(document.getElementById && !(document.all)) { height= document.getElementById('doxygen').contentDocument.body.scrollHeight + 20; document.getElementById('doxygen').style.height = height; } else if(document.all) { height= document.frames('doxygen').document.body.scrollHeight + 20; document.all.doxygen.style.height = height; }}</script><link href="http://code.google.com/css/codesite.pack.01312008.css" type="text/css" rel="stylesheet"></link><!--[if IE]><link rel="stylesheet" type="text/css" href="/css/iehacks.css" /><![endif]--><script src="http://code.google.com/android/assets/search_autocomplete.js"></script><link rel="stylesheet" type="text/css" href="http://code.google.com/css/semantic_headers.css" /><link rel="stylesheet" type="text/css" href="http://code.google.com/android/assets/style.css" /><script> jQuery(document).ready(function() { jQuery("pre").addClass("prettyprint"); }); </script><style type="text/css"><!--h1,h2,h3 { color: #000000;}--></style></head><body class="gc-documentation"><div id="gc-container"><a name="top"></a><div id="skipto"> </div><div id="langpref"> <!--<a class="dropdown" href="/">English</a> <span>|</span> <a href="/more/">Site Directory</a> --></div><div id="gc-header"> <div id="logo"><a href="http://code.google.com/android/index.html"><img src="http://code.google.com/android/images/logo_android.gif" alt="Android"/></a></div> <div id="search" style="inline"> <div id="searchForm" class="searchForm" style="height: 44px;"> <!--previously form was here--> </div> <!-- end searchForm --> <noscript> <style type="text/css"> .searchForm { display : none !important; } .searchForm2 { display : inline !important; } </style> </noscript> <div id="searchForm2" class="searchForm2" style="display:none"> <form id="searchbox_001456098540849067467:6whlsytkdqg" action="http://www.google.com/cse"> <input type="hidden" name="cx" value="001456098540849067467:6whlsytkdqg" /> <input type="hidden" name="cof" value="FORID:0" /> <input type="text" name="q" maxlength="2048" size="41" autocomplete="off" title="Google Code Search"/> <input type="submit" name="sa" value="Search" title="Search"/> <br/> <div class="greytext">e.g. "ajax apis" or "open source"</div> </form> </div> <!-- end searchForm2 --> </div> <!-- end search --></div><!-- end gc-header --><div id="searchControl" class="search-control"></div><!--[if IE]><iframe id="backiFrame" name="backiFrame" src='/dummy.html' style="display:none"></iframe><![endif]--><div id="codesiteContent"><a name="gc-topnav-anchor"></a><div id="gc-topnav"> <h1>Android Platform Development Kit</h1> <ul class="gc-topnav-tabs"> <li id="sdk_link"> <a href="http://code.google.com/android/index.html" title="Android Software Development Kit">SDK</a> </li> <li id="docs_link"> <a href="index.html" title="Official Android documentation">Docs</a> </li> <li id="faq_link"> <a href="http://code.google.com/android/kb/index.html" title="Answers to frequently asked questions about Android">FAQ</a> </li> <li> <a href="http://android-developers.blogspot.com/" title="Official Android blog">Blog</a> </li> <li> <a href="http://code.google.com/android/groups.html" title="Android developer forum">Group</a> </li> <li> <a href="http://code.google.com/android/terms.html" title="Android terms of service">Terms</a> </li> <li> <a href="mailto:android-pdk-feedback@google.com?subject=PDK%20Feedback&body=(filed%20from:%20camera.html%20v0.6%20-%2025%20November%202008)%0D%0A%0D%0ASUMMARY:%0D%0A%0D%0A%0D%0A%0D%0ASTEPS%20TO%20REPRODUCE:%0D%0A%0D%0A%0D%0A%0D%0AADDITIONAL%20NOTES:">Report a Problem</a> </li> </ul></div><!-- end gc-topnav --><div class="g-section g-tpl-180"><a name="gc-toc"></a><div class="g-unit g-first" id="gc-toc"> <ul> <li> <h1><a href="index.html">Documentation</a></h1> <ul> <li> <strong>Introduction</strong> <ul> <li><a href="system_requirements.html">Device Requirements</a></li> </ul> </li> <li> <strong>Dev Environment Setup</strong> <ul> <li><a href="build_system.html">Build System</a></li> </ul> </li> <li> <strong>Basic Bring up</strong> <ul> <li><a href="build_new_device.html">Building New Device</a></li> <li><a href="bring_up.html">Bring up</a></li> <li><a href="keymaps_keyboard_input.html">Keymaps and Keyboard</a></li> <li><a href="display_drivers.html">Display Drivers</a></li> </ul> </li> <li> <strong>Multimedia</strong> <ul> <li><a href="audio_sub_system.html">Audio</a></li> <li><a href="camera.html">Camera</a></li> </ul> </li> <li> <strong>Power Management</strong> <ul> <li><a href="power_management.html">Power Management</a></li> </ul> </li> <li> <strong>Networking</strong> <ul> <li><a href="wifi.html">Wi-Fi</a></li> <li><a href="gps.html">GPS</a></li> <li><a href="bluetooth.html">Bluetooth</a></li> </ul> </li> <li> <strong>Telephony</strong> <ul> <li><a href="telephony.html">Radio Interface Layer</a></li> </ul> </li> <li> <strong>Testing</strong> <ul> <li><a href="instrumentation_testing.html">Instrumentation Testing</a></li> </ul> </li> </ul> </li> </ul></div><a name="gc-pagecontent"></a><div class="g-unit" id="gc-pagecontent"><div id="jd-content"><div class="jd-descr"><a name="androidCameraTitle"></a><h1>Camera Subsystem</h1><a name="toc"/><div style="padding:10px"><a href="#androidCameraIntroduction">Introduction</a><br/><a href="#androidCameraBuildingDriver">Building a Camera Library</a><br/><a href="#androidCameraSequenceDiagrams">Sequence Diagrams</a><br/><div style="padding-left:40px"><a href="#androidCameraSequenceDiagramsPreview">Preview</a><br/><a href="#androidCameraSequenceDiagramsTakePic">Taking a Picture</a><br/></div><a href="#androidCameraInterfaceIntro">Interface</a><br/></div></font></div><a name="androidCameraIntroduction"></a><h2>Introduction</h2><p>Android's camera subsystem connects the camera application to the application framework and user space libraries, which in turn communicate with the camera hardware layer that operates the physical camera.</p><p>The diagram below illustrates the structure of the camera subsystem.</p><p><img src="androidCameraArchitecture.gif"></p><a name="androidCameraBuildingDriver"></a><h2>Building a Camera Library</h2><p>To implement a camera driver, create a shared library that implements the interface defined in <code>CameraHardwareInterface.h</code>. You must name your shared library <code>libcamera.so</code> so that it will get loaded from <code>/system/lib</code> at runtime. Place libcamera sources and <code>Android.mk</code> in <code>partner/acme/chipset_or_board/libcamera/</code>.</p><p>The following stub <code>Android.mk</code> file ensures that <code>libcamera</code> compiles and links to the appropriate libraries:</p><pre class="prettify">LOCAL_PATH := $(call my-dir)include $(CLEAR_VARS)LOCAL_MODULE := libcameraLOCAL_SHARED_LIBRARIES := \ libutils \ librpc \ liblogLOCAL_SRC_FILES += MyCameraHardware.cppLOCAL_CFLAGS +=LOCAL_C_INCLUDES +=LOCAL_STATIC_LIBRARIES += \ libcamera-common \ libclock-rpc \ libcommondefs-rpcinclude $(BUILD_SHARED_LIBRARY)</pre><a name="androidCameraSequenceDiagrams"></a><h2>Sequence Diagrams</h2><a name="androidCameraSequenceDiagramsPreview"></a><h3>Preview</h3><p>The following diagram illustrates the sequence of function calls and actions necessary for your camera to preview.</p><img src="cameraPreview.jpg"><a name="androidCameraSequenceDiagramsTakePic"></a><h3>Taking a Picture</h3><p>The following diagram illustrates the sequence of function calls and actions necessary for your camera to take a picture.</p><img src="cameraTakePicture.jpg"><a name="androidCameraInterfaceIntro"></a><h2>Interface</h2><p class="note"><strong>Note</strong>: This document relies on some Doxygen-generated content that appears in an iFrame below. To return to the Doxygen default content for this page, <a href="camera.html">click here</a>.</p><iframe onLoad="resizeHeight();" src="CameraHardwareInterface_8h.html " scrolling="no" scroll="no" id="doxygen" marginwidth="0" marginheight="0" frameborder="0" style="width:100%;"></iframe><p><span class="lh2"><a name="androidFooter"></a></span> </div> </div> <!-- end gc-pagecontent --> </div> <!-- end gooey wrapper --> </div> <!-- end codesearchresults --> <div id="gc-footer" dir="ltr"> <div class="text"> ©2008 Google<!-- - <a href="/">Code Home</a> - <a href="http://www.google.com/accounts/TOS">Site Terms of Service</a> - <a href="http://www.google.com/privacy.html">Privacy Policy</a> - <a href="/more">Site Directory</a> --></div> </div> <!-- end gc-footer --></div><!-- end gc-containter --><script src="http://www.google-analytics.com/ga.js" type="text/javascript"></script><script type="text/javascript"> try { var pageTracker = _gat._getTracker("UA-18071-1"); pageTracker._setAllowAnchor(true); pageTracker._initData(); pageTracker._trackPageview(); } catch(e) {}</script><div id="jd-build-id"> v0.6 - 25 November 2008</div></div></div></div></body></html>⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -