The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 1 | //-------------------------------------------------------------------------- |
Chih-Chung Chang | d6a02c3 | 2009-03-24 20:34:28 -0700 | [diff] [blame] | 2 | // Process IPTC data and XMP data. |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 3 | //-------------------------------------------------------------------------- |
| 4 | #include "jhead.h" |
| 5 | |
Chih-Chung Chang | d6a02c3 | 2009-03-24 20:34:28 -0700 | [diff] [blame] | 6 | // IPTC entry types known to Jhead (there's many more defined) |
| 7 | #define IPTC_RECORD_VERSION 0x00 |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 8 | #define IPTC_SUPLEMENTAL_CATEGORIES 0x14 |
| 9 | #define IPTC_KEYWORDS 0x19 |
| 10 | #define IPTC_CAPTION 0x78 |
| 11 | #define IPTC_AUTHOR 0x7A |
| 12 | #define IPTC_HEADLINE 0x69 |
| 13 | #define IPTC_SPECIAL_INSTRUCTIONS 0x28 |
| 14 | #define IPTC_CATEGORY 0x0F |
| 15 | #define IPTC_BYLINE 0x50 |
| 16 | #define IPTC_BYLINE_TITLE 0x55 |
| 17 | #define IPTC_CREDIT 0x6E |
| 18 | #define IPTC_SOURCE 0x73 |
| 19 | #define IPTC_COPYRIGHT_NOTICE 0x74 |
| 20 | #define IPTC_OBJECT_NAME 0x05 |
| 21 | #define IPTC_CITY 0x5A |
| 22 | #define IPTC_STATE 0x5F |
| 23 | #define IPTC_COUNTRY 0x65 |
| 24 | #define IPTC_TRANSMISSION_REFERENCE 0x67 |
| 25 | #define IPTC_DATE 0x37 |
| 26 | #define IPTC_COPYRIGHT 0x0A |
| 27 | #define IPTC_COUNTRY_CODE 0x64 |
| 28 | #define IPTC_REFERENCE_SERVICE 0x2D |
Chih-Chung Chang | d6a02c3 | 2009-03-24 20:34:28 -0700 | [diff] [blame] | 29 | #define IPTC_TIME_CREATED 0x3C |
| 30 | #define IPTC_SUB_LOCATION 0x5C |
| 31 | #define IPTC_IMAGE_TYPE 0x82 |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 32 | |
| 33 | //-------------------------------------------------------------------------- |
| 34 | // Process and display IPTC marker. |
| 35 | // |
| 36 | // IPTC block consists of: |
| 37 | // - Marker: 1 byte (0xED) |
| 38 | // - Block length: 2 bytes |
| 39 | // - IPTC Signature: 14 bytes ("Photoshop 3.0\0") |
| 40 | // - 8BIM Signature 4 bytes ("8BIM") |
| 41 | // - IPTC Block start 2 bytes (0x04, 0x04) |
| 42 | // - IPTC Header length 1 byte |
| 43 | // - IPTC header Header is padded to even length, counting the length byte |
| 44 | // - Length 4 bytes |
| 45 | // - IPTC Data which consists of a number of entries, each of which has the following format: |
| 46 | // - Signature 2 bytes (0x1C02) |
| 47 | // - Entry type 1 byte (for defined entry types, see #defines above) |
| 48 | // - entry length 2 bytes |
| 49 | // - entry data 'entry length' bytes |
| 50 | // |
| 51 | //-------------------------------------------------------------------------- |
| 52 | void show_IPTC (unsigned char* Data, unsigned int itemlen) |
| 53 | { |
| 54 | const char IptcSig1[] = "Photoshop 3.0"; |
| 55 | const char IptcSig2[] = "8BIM"; |
| 56 | const char IptcSig3[] = {0x04, 0x04}; |
| 57 | |
| 58 | unsigned char * pos = Data + sizeof(short); // position data pointer after length field |
| 59 | unsigned char * maxpos = Data+itemlen; |
| 60 | char headerLen = 0; |
| 61 | |
| 62 | if (itemlen < 25) goto corrupt; |
| 63 | |
| 64 | // Check IPTC signatures |
| 65 | if (memcmp(pos, IptcSig1, sizeof(IptcSig1)-1) != 0) goto badsig; |
| 66 | pos += sizeof(IptcSig1); // move data pointer to the next field |
| 67 | |
| 68 | if (memcmp(pos, IptcSig2, sizeof(IptcSig2)-1) != 0) goto badsig; |
| 69 | pos += sizeof(IptcSig2)-1; // move data pointer to the next field |
| 70 | |
| 71 | if (memcmp(pos, IptcSig3, sizeof(IptcSig3)) != 0){ |
| 72 | badsig: |
| 73 | if (ShowTags){ |
| 74 | ErrNonfatal("IPTC type signature mismatch\n",0,0); |
| 75 | } |
| 76 | return; |
| 77 | } |
| 78 | pos += sizeof(IptcSig3); // move data pointer to the next field |
| 79 | |
| 80 | if (pos >= maxpos) goto corrupt; |
| 81 | |
| 82 | // IPTC section found |
| 83 | |
| 84 | // Skip header |
| 85 | headerLen = *pos++; // get header length and move data pointer to the next field |
| 86 | pos += headerLen + 1 - (headerLen % 2); // move data pointer to the next field (Header is padded to even length, counting the length byte) |
| 87 | |
| 88 | if (pos+4 >= maxpos) goto corrupt; |
| 89 | |
| 90 | // Get length (from motorola format) |
| 91 | //length = (*pos << 24) | (*(pos+1) << 16) | (*(pos+2) << 8) | *(pos+3); |
| 92 | |
Chih-Chung Chang | d6a02c3 | 2009-03-24 20:34:28 -0700 | [diff] [blame] | 93 | pos += 4; // move data pointer to the next field |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 94 | |
| 95 | printf("======= IPTC data: =======\n"); |
| 96 | |
| 97 | // Now read IPTC data |
| 98 | while (pos < (Data + itemlen-5)) { |
| 99 | short signature; |
Chih-Chung Chang | d6a02c3 | 2009-03-24 20:34:28 -0700 | [diff] [blame] | 100 | unsigned char type = 0; |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 101 | short length = 0; |
| 102 | char * description = NULL; |
| 103 | |
| 104 | if (pos+5 > maxpos) goto corrupt; |
| 105 | |
| 106 | signature = (*pos << 8) + (*(pos+1)); |
Chih-Chung Chang | d6a02c3 | 2009-03-24 20:34:28 -0700 | [diff] [blame] | 107 | pos += 2; |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 108 | |
| 109 | if (signature != 0x1C02){ |
| 110 | break; |
| 111 | } |
| 112 | |
| 113 | type = *pos++; |
| 114 | length = (*pos << 8) + (*(pos+1)); |
Chih-Chung Chang | d6a02c3 | 2009-03-24 20:34:28 -0700 | [diff] [blame] | 115 | pos += 2; // Skip tag length |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 116 | |
| 117 | if (pos+length > maxpos) goto corrupt; |
| 118 | // Process tag here |
| 119 | switch (type) { |
Chih-Chung Chang | d6a02c3 | 2009-03-24 20:34:28 -0700 | [diff] [blame] | 120 | case IPTC_RECORD_VERSION: |
| 121 | printf("Record vers. : %d\n", (*pos << 8) + (*(pos+1))); |
| 122 | break; |
| 123 | |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 124 | case IPTC_SUPLEMENTAL_CATEGORIES: description = "SuplementalCategories"; break; |
| 125 | case IPTC_KEYWORDS: description = "Keywords"; break; |
| 126 | case IPTC_CAPTION: description = "Caption"; break; |
| 127 | case IPTC_AUTHOR: description = "Author"; break; |
| 128 | case IPTC_HEADLINE: description = "Headline"; break; |
Chih-Chung Chang | d6a02c3 | 2009-03-24 20:34:28 -0700 | [diff] [blame] | 129 | case IPTC_SPECIAL_INSTRUCTIONS: description = "Spec. Instr."; break; |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 130 | case IPTC_CATEGORY: description = "Category"; break; |
| 131 | case IPTC_BYLINE: description = "Byline"; break; |
Chih-Chung Chang | d6a02c3 | 2009-03-24 20:34:28 -0700 | [diff] [blame] | 132 | case IPTC_BYLINE_TITLE: description = "Byline Title"; break; |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 133 | case IPTC_CREDIT: description = "Credit"; break; |
| 134 | case IPTC_SOURCE: description = "Source"; break; |
| 135 | case IPTC_COPYRIGHT_NOTICE: description = "(C)Notice"; break; |
Chih-Chung Chang | d6a02c3 | 2009-03-24 20:34:28 -0700 | [diff] [blame] | 136 | case IPTC_OBJECT_NAME: description = "Object Name"; break; |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 137 | case IPTC_CITY: description = "City"; break; |
| 138 | case IPTC_STATE: description = "State"; break; |
| 139 | case IPTC_COUNTRY: description = "Country"; break; |
| 140 | case IPTC_TRANSMISSION_REFERENCE: description = "OriginalTransmissionReference"; break; |
| 141 | case IPTC_DATE: description = "DateCreated"; break; |
| 142 | case IPTC_COPYRIGHT: description = "(C)Flag"; break; |
Chih-Chung Chang | d6a02c3 | 2009-03-24 20:34:28 -0700 | [diff] [blame] | 143 | case IPTC_REFERENCE_SERVICE: description = "Country Code"; break; |
| 144 | case IPTC_COUNTRY_CODE: description = "Ref. Service"; break; |
| 145 | case IPTC_TIME_CREATED: description = "Time Created"; break; |
| 146 | case IPTC_SUB_LOCATION: description = "Sub Location"; break; |
| 147 | case IPTC_IMAGE_TYPE: description = "Image type"; break; |
| 148 | |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 149 | default: |
| 150 | if (ShowTags){ |
Chih-Chung Chang | d6a02c3 | 2009-03-24 20:34:28 -0700 | [diff] [blame] | 151 | printf("Unrecognised IPTC tag: %d\n", type ); |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 152 | } |
| 153 | break; |
| 154 | } |
| 155 | if (description != NULL) { |
| 156 | char TempBuf[32]; |
| 157 | memset(TempBuf, 0, sizeof(TempBuf)); |
Chih-Chung Chang | d6a02c3 | 2009-03-24 20:34:28 -0700 | [diff] [blame] | 158 | memset(TempBuf, ' ', 14); |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 159 | memcpy(TempBuf, description, strlen(description)); |
| 160 | strcat(TempBuf, ":"); |
| 161 | printf("%s %*.*s\n", TempBuf, length, length, pos); |
| 162 | } |
| 163 | pos += length; |
| 164 | } |
| 165 | return; |
| 166 | corrupt: |
| 167 | ErrNonfatal("Pointer corruption in IPTC\n",0,0); |
| 168 | } |
Chih-Chung Chang | d6a02c3 | 2009-03-24 20:34:28 -0700 | [diff] [blame] | 169 | |
| 170 | |
| 171 | |
| 172 | //-------------------------------------------------------------------------- |
| 173 | // Dump contents of XMP section |
| 174 | //-------------------------------------------------------------------------- |
| 175 | void ShowXmp(Section_t XmpSection) |
| 176 | { |
| 177 | unsigned char * Data; |
| 178 | char OutLine[101]; |
| 179 | int OutLineChars; |
| 180 | int NonBlank; |
| 181 | unsigned a; |
| 182 | NonBlank = 0; |
| 183 | Data = XmpSection.Data; |
| 184 | OutLineChars = 0; |
| 185 | |
| 186 | |
| 187 | for (a=0;a<XmpSection.Size;a++){ |
| 188 | if (Data[a] >= 32 && Data[a] < 128){ |
| 189 | OutLine[OutLineChars++] = Data[a]; |
| 190 | if (Data[a] != ' ') NonBlank |= 1; |
| 191 | }else{ |
| 192 | if (Data[a] != '\n'){ |
| 193 | OutLine[OutLineChars++] = '?'; |
| 194 | } |
| 195 | } |
| 196 | if (Data[a] == '\n' || OutLineChars >= 100){ |
| 197 | OutLine[OutLineChars] = 0; |
| 198 | if (NonBlank){ |
| 199 | puts(OutLine); |
| 200 | } |
| 201 | NonBlank = (NonBlank & 1) << 1; |
| 202 | OutLineChars = 0; |
| 203 | } |
| 204 | } |
| 205 | } |