Satoshi Togawa / Mbed 2 deprecated mpod_picasa_photoframe

Download picasa web albums photos automatically. This application requires mpod mother board. See also http://mbed.org/users/geodenx/notebook/mpod/

Dependencies:   BlinkLed HTTPClient EthernetInterface FatFileSystemCpp MSCFileSystem mbed-rtos mbed

Download picasa web albums photos automatically.
This application requires mpod mother board.

Picasaウェブアルバムから、自動的に写真をダウンロードして、ディジタルフォトフレームに表示します。
動作させるには mpod マザーボード が必要です。
プログラムの中で、ご自分のアルバムのRSSファイルへのURLを指定してからご利用下さい。

album description edit information description

HTTPFile.cpp@6:83383116c88a, 2012-09-01 (annotated)

Committer:
togayan
Date:
Sat Sep 01 04:28:20 2012 +0000
Revision:
6:83383116c88a
Parent:
0:dfd5cfea7112 
HTTPFile was changed to follow the latest HTTPClient library.; BlinkLed was isolated as a library.; Change LED port from LED1,2 to LED3,4 for the specification of pwmout.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
togayan 0:dfd5cfea7112 1 /* HTTPFile.cpp */
togayan 0:dfd5cfea7112 2 #include "HTTPFile.h"
togayan 0:dfd5cfea7112 3
togayan 0:dfd5cfea7112 4 #include <cstring>
togayan 0:dfd5cfea7112 5
togayan 0:dfd5cfea7112 6 #define OK 0
togayan 0:dfd5cfea7112 7 #define NG -1
togayan 0:dfd5cfea7112 8
togayan 0:dfd5cfea7112 9 using std::memcpy;
togayan 0:dfd5cfea7112 10 using std::strncpy;
togayan 0:dfd5cfea7112 11 using std::strlen;
togayan 0:dfd5cfea7112 12
togayan 0:dfd5cfea7112 13 HTTPFile::HTTPFile(const char* path) :
togayan 0:dfd5cfea7112 14 m_fp(NULL),
togayan 0:dfd5cfea7112 15 m_path(path),
togayan 0:dfd5cfea7112 16 m_len(0),
togayan 0:dfd5cfea7112 17 m_chunked(false)
togayan 0:dfd5cfea7112 18 {
togayan 0:dfd5cfea7112 19 }
togayan 0:dfd5cfea7112 20
togayan 0:dfd5cfea7112 21 HTTPFile::~HTTPFile()
togayan 0:dfd5cfea7112 22 {
togayan 0:dfd5cfea7112 23 closeFile();
togayan 0:dfd5cfea7112 24 }
togayan 0:dfd5cfea7112 25
togayan 0:dfd5cfea7112 26 void HTTPFile::clear()
togayan 0:dfd5cfea7112 27 {
togayan 0:dfd5cfea7112 28 closeFile();
togayan 0:dfd5cfea7112 29 //Force reopening
togayan 0:dfd5cfea7112 30 }
togayan 0:dfd5cfea7112 31
togayan 6:83383116c88a 32 /*virtual*/ void HTTPFile::readReset()
togayan 6:83383116c88a 33 {
togayan 6:83383116c88a 34 if(m_fp)
togayan 6:83383116c88a 35 fseek(m_fp, 0, SEEK_SET);
togayan 6:83383116c88a 36 }
togayan 6:83383116c88a 37
togayan 0:dfd5cfea7112 38 /*virtual*/ int HTTPFile::read(char* buf, size_t len, size_t* pReadLen)
togayan 0:dfd5cfea7112 39 {
togayan 0:dfd5cfea7112 40 if(!openFile("r")) //File does not exist, or I/O error...
togayan 0:dfd5cfea7112 41 return NG;
togayan 0:dfd5cfea7112 42
togayan 0:dfd5cfea7112 43 *pReadLen = fread(buf, 1, len, m_fp);
togayan 0:dfd5cfea7112 44 if( feof(m_fp) )
togayan 0:dfd5cfea7112 45 {
togayan 0:dfd5cfea7112 46 //File read completely, we can close it
togayan 0:dfd5cfea7112 47 closeFile();
togayan 0:dfd5cfea7112 48 }
togayan 0:dfd5cfea7112 49 return OK;
togayan 0:dfd5cfea7112 50 }
togayan 0:dfd5cfea7112 51
togayan 6:83383116c88a 52 /*virtual*/ void HTTPFile::writeReset()
togayan 6:83383116c88a 53 {
togayan 6:83383116c88a 54 if(m_fp)
togayan 6:83383116c88a 55 fseek(m_fp, 0, SEEK_SET);
togayan 6:83383116c88a 56 }
togayan 6:83383116c88a 57
togayan 0:dfd5cfea7112 58 /*virtual*/ int HTTPFile::write(const char* buf, size_t len)
togayan 0:dfd5cfea7112 59 {
togayan 0:dfd5cfea7112 60 if(!openFile("w")) //File does not exist, or I/O error...
togayan 0:dfd5cfea7112 61 return NG;
togayan 0:dfd5cfea7112 62
togayan 0:dfd5cfea7112 63 len = fwrite(buf, 1, len, m_fp);
togayan 0:dfd5cfea7112 64 //DBG("Written %d bytes in %d\n", len, m_fp);
togayan 0:dfd5cfea7112 65 if( (!m_chunked && (ftell(m_fp) >= m_len)) || (m_chunked && !len) )
togayan 0:dfd5cfea7112 66 {
togayan 0:dfd5cfea7112 67 //File received completely, we can close it
togayan 0:dfd5cfea7112 68 closeFile();
togayan 0:dfd5cfea7112 69 }
togayan 0:dfd5cfea7112 70 return len;
togayan 0:dfd5cfea7112 71 }
togayan 0:dfd5cfea7112 72
togayan 0:dfd5cfea7112 73 /*virtual*/ int HTTPFile::getDataType(char* type, size_t maxTypeLen) //Internet media type for Content-Type header
togayan 0:dfd5cfea7112 74 {
togayan 0:dfd5cfea7112 75 strncpy(type, "text/plain", maxTypeLen-1);
togayan 0:dfd5cfea7112 76 type[maxTypeLen-1] = '\0';
togayan 0:dfd5cfea7112 77 return OK;
togayan 0:dfd5cfea7112 78 }
togayan 0:dfd5cfea7112 79
togayan 0:dfd5cfea7112 80 /*virtual*/ void HTTPFile::setDataType(const char* type) //Internet media type from Content-Type header
togayan 0:dfd5cfea7112 81 {
togayan 0:dfd5cfea7112 82 //Do not really care here
togayan 0:dfd5cfea7112 83 }
togayan 0:dfd5cfea7112 84
togayan 0:dfd5cfea7112 85 /*virtual*/ bool HTTPFile::getIsChunked() //For Transfer-Encoding header
togayan 0:dfd5cfea7112 86 {
togayan 0:dfd5cfea7112 87 return false;
togayan 0:dfd5cfea7112 88 }
togayan 0:dfd5cfea7112 89
togayan 0:dfd5cfea7112 90 /*virtual*/ void HTTPFile::setIsChunked(bool chunked) //For Transfer-Encoding header
togayan 0:dfd5cfea7112 91 {
togayan 0:dfd5cfea7112 92 m_chunked = chunked;
togayan 0:dfd5cfea7112 93 }
togayan 0:dfd5cfea7112 94
togayan 0:dfd5cfea7112 95 /*virtual*/ size_t HTTPFile::getDataLen() //For Content-Length header
togayan 0:dfd5cfea7112 96 {
togayan 0:dfd5cfea7112 97 return m_len;
togayan 0:dfd5cfea7112 98 }
togayan 0:dfd5cfea7112 99
togayan 0:dfd5cfea7112 100 /*virtual*/ void HTTPFile::setDataLen(size_t len) //For Content-Length header, or if the transfer is chunked, next chunk length
togayan 0:dfd5cfea7112 101 {
togayan 0:dfd5cfea7112 102 if(!m_chunked)
togayan 0:dfd5cfea7112 103 m_len = len; //Useful so that we can close file when last byte is written
togayan 0:dfd5cfea7112 104 }
togayan 0:dfd5cfea7112 105
togayan 0:dfd5cfea7112 106 bool HTTPFile::openFile(const char* mode) //true on success, false otherwise
togayan 0:dfd5cfea7112 107 {
togayan 0:dfd5cfea7112 108 if(m_fp)
togayan 0:dfd5cfea7112 109 return true;
togayan 0:dfd5cfea7112 110
togayan 0:dfd5cfea7112 111 m_fp = fopen(m_path.c_str(), mode);
togayan 0:dfd5cfea7112 112 if(m_fp && mode[0]=='r')
togayan 0:dfd5cfea7112 113 {
togayan 0:dfd5cfea7112 114 //Seek EOF to get length
togayan 0:dfd5cfea7112 115 fseek(m_fp, 0, SEEK_END);
togayan 0:dfd5cfea7112 116 m_len = ftell(m_fp);
togayan 0:dfd5cfea7112 117 fseek(m_fp, 0, SEEK_SET); //Goto SOF
togayan 0:dfd5cfea7112 118 }
togayan 0:dfd5cfea7112 119
togayan 0:dfd5cfea7112 120 //DBG("fd = %d\n", m_fp);
togayan 0:dfd5cfea7112 121
togayan 0:dfd5cfea7112 122 if(!m_fp)
togayan 0:dfd5cfea7112 123 return false;
togayan 0:dfd5cfea7112 124
togayan 0:dfd5cfea7112 125 return true;
togayan 0:dfd5cfea7112 126 }
togayan 0:dfd5cfea7112 127
togayan 0:dfd5cfea7112 128 void HTTPFile::closeFile()
togayan 0:dfd5cfea7112 129 {
togayan 0:dfd5cfea7112 130 if(m_fp)
togayan 0:dfd5cfea7112 131 fclose(m_fp);
togayan 0:dfd5cfea7112 132 }