Annotation of parser3/src/classes/image.C, revision 1.169
1.1 paf 1: /** @file
2: Parser: @b image parser class.
3:
1.160 moko 4: Copyright (c) 2001-2017 Art. Lebedev Studio (http://www.artlebedev.com)
1.66 paf 5: Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
1.73 paf 6: */
1.1 paf 7:
1.31 parser 8: /*
9: jpegsize: gets the width and height (in pixels) of a jpeg file
10: Andrew Tong, werdna@ugcs.caltech.edu February 14, 1995
11: modified slightly by alex@ed.ac.uk
12: and further still by rjray@uswest.com
13: optimization and general re-write from tmetro@vl.com
14: from perl by paf@design.ru
1.1 paf 15: */
16:
17: #include "pa_config_includes.h"
1.139 moko 18: #include "gif.h"
1.1 paf 19:
1.91 paf 20: #include "pa_vmethod_frame.h"
1.1 paf 21: #include "pa_common.h"
22: #include "pa_request.h"
23: #include "pa_vfile.h"
24: #include "pa_vimage.h"
1.89 paf 25: #include "pa_vdate.h"
1.91 paf 26: #include "pa_table.h"
1.163 moko 27: #include "pa_charsets.h"
1.1 paf 28:
1.169 ! moko 29: volatile const char * IDENT_IMAGE_C="$Id: image.C,v 1.168 2020/11/30 16:44:24 moko Exp $";
1.139 moko 30:
1.125 misha 31: // defines
32:
1.126 misha 33: static const String spacebar_width_name("space");
34: static const String monospace_width_name("width");
35: static const String letter_spacing_name("spacing");
1.125 misha 36:
1.22 paf 37: // class
38:
1.91 paf 39: class MImage: public Methoded {
1.22 paf 40: public: // VStateless_class
1.130 misha 41: Value* create_new_value(Pool&) { return new VImage(); }
1.22 paf 42:
43: public:
1.91 paf 44: MImage();
1.22 paf 45: };
1.1 paf 46:
1.91 paf 47: // globals
48:
1.151 moko 49: DECLARE_CLASS_VAR(image, new MImage);
1.91 paf 50:
1.1 paf 51: // helpers
52:
1.118 misha 53: #define EXIF_TAG(tag, name) put(tag, #name);
54:
1.91 paf 55: /// value of exif tag -> it's value
56: class EXIF_tag_value2name: public Hash<int, const char*> {
57: public:
58: EXIF_tag_value2name() {
59: // image JPEG Exif
60: // Tags used by IFD0 (main image)
61: EXIF_TAG(0x010e, ImageDescription);
62: EXIF_TAG(0x010f, Make);
63: EXIF_TAG(0x0110, Model);
64: EXIF_TAG(0x0112, Orientation);
65: EXIF_TAG(0x011a, XResolution);
66: EXIF_TAG(0x011b, YResolution);
67: EXIF_TAG(0x0128, ResolutionUnit);
68: EXIF_TAG(0x0131, Software);
69: EXIF_TAG(0x0132, DateTime);
70: EXIF_TAG(0x013e, WhitePoint);
71: EXIF_TAG(0x013f, PrimaryChromaticities);
72: EXIF_TAG(0x0211, YCbCrCoefficients);
73: EXIF_TAG(0x0213, YCbCrPositioning);
74: EXIF_TAG(0x0214, ReferenceBlackWhite);
75: EXIF_TAG(0x8298, Copyright);
76: EXIF_TAG(0x8769, ExifOffset);
77: // Tags used by Exif SubIFD
78: EXIF_TAG(0x829a, ExposureTime);
79: EXIF_TAG(0x829d, FNumber);
80: EXIF_TAG(0x8822, ExposureProgram);
81: EXIF_TAG(0x8827, ISOSpeedRatings);
82: EXIF_TAG(0x9000, ExifVersion);
83: EXIF_TAG(0x9003, DateTimeOriginal);
84: EXIF_TAG(0x9004, DateTimeDigitized);
85: EXIF_TAG(0x9101, ComponentsConfiguration);
86: EXIF_TAG(0x9102, CompressedBitsPerPixel);
87: EXIF_TAG(0x9201, ShutterSpeedValue);
88: EXIF_TAG(0x9202, ApertureValue);
89: EXIF_TAG(0x9203, BrightnessValue);
90: EXIF_TAG(0x9204, ExposureBiasValue);
91: EXIF_TAG(0x9205, MaxApertureValue);
92: EXIF_TAG(0x9206, SubjectDistance);
93: EXIF_TAG(0x9207, MeteringMode);
94: EXIF_TAG(0x9208, LightSource);
95: EXIF_TAG(0x9209, Flash);
96: EXIF_TAG(0x920a, FocalLength);
97: EXIF_TAG(0x927c, MakerNote);
98: EXIF_TAG(0x9286, UserComment);
99: EXIF_TAG(0x9290, SubsecTime);
100: EXIF_TAG(0x9291, SubsecTimeOriginal);
101: EXIF_TAG(0x9292, SubsecTimeDigitized);
102: EXIF_TAG(0xa000, FlashPixVersion);
103: EXIF_TAG(0xa001, ColorSpace);
104: EXIF_TAG(0xa002, ExifImageWidth);
105: EXIF_TAG(0xa003, ExifImageHeight);
106: EXIF_TAG(0xa004, RelatedSoundFile);
107: EXIF_TAG(0xa005, ExifInteroperabilityOffset);
108: EXIF_TAG(0xa20e, FocalPlaneXResolution);
109: EXIF_TAG(0xa20f, FocalPlaneYResolution);
110: EXIF_TAG(0xa210, FocalPlaneResolutionUnit);
111: EXIF_TAG(0xa215, ExposureIndex);
112: EXIF_TAG(0xa217, SensingMethod);
113: EXIF_TAG(0xa300, FileSource);
114: EXIF_TAG(0xa301, SceneType);
115: EXIF_TAG(0xa302, CFAPattern);
116: // Misc Tags
117: EXIF_TAG(0x00fe, NewSubfileType);
118: EXIF_TAG(0x00ff, SubfileType);
119: EXIF_TAG(0x012d, TransferFunction);
120: EXIF_TAG(0x013b, Artist);
121: EXIF_TAG(0x013d, Predictor);
122: EXIF_TAG(0x0142, TileWidth);
123: EXIF_TAG(0x0143, TileLength);
124: EXIF_TAG(0x0144, TileOffsets);
125: EXIF_TAG(0x0145, TileByteCounts);
126: EXIF_TAG(0x014a, SubIFDs);
127: EXIF_TAG(0x015b, JPEGTables);
128: EXIF_TAG(0x828d, CFARepeatPatternDim);
129: EXIF_TAG(0x828e, CFAPattern);
130: EXIF_TAG(0x828f, BatteryLevel);
131: EXIF_TAG(0x83bb, IPTC/NAA);
132: EXIF_TAG(0x8773, InterColorProfile);
133: EXIF_TAG(0x8824, SpectralSensitivity);
1.118 misha 134: //EXIF_TAG(0x8825, GPSInfo);
1.91 paf 135: EXIF_TAG(0x8828, OECF);
136: EXIF_TAG(0x8829, Interlace);
137: EXIF_TAG(0x882a, TimeZoneOffset);
138: EXIF_TAG(0x882b, SelfTimerMode);
139: EXIF_TAG(0x920b, FlashEnergy);
140: EXIF_TAG(0x920c, SpatialFrequencyResponse);
141: EXIF_TAG(0x920d, Noise);
142: EXIF_TAG(0x9211, ImageNumber);
143: EXIF_TAG(0x9212, SecurityClassification);
144: EXIF_TAG(0x9213, ImageHistory);
145: EXIF_TAG(0x9214, SubjectLocation);
146: EXIF_TAG(0x9215, ExposureIndex);
147: EXIF_TAG(0x9216, TIFF/EPStandardID);
148: EXIF_TAG(0xa20b, FlashEnergy);
149: EXIF_TAG(0xa20c, SpatialFrequencyResponse);
150: EXIF_TAG(0xa214, SubjectLocation);
1.118 misha 151:
152: // additional things added by misha@
153: EXIF_TAG(0x0100, ImageWidth);
154: EXIF_TAG(0x0101, ImageLength);
155: EXIF_TAG(0x0102, BitsPerSample);
156: EXIF_TAG(0x0103, Compression);
157: EXIF_TAG(0x0106, PhotometricInterpretation);
158: EXIF_TAG(0x010a, FillOrder);
159: EXIF_TAG(0x010d, DocumentName);
160: EXIF_TAG(0x0111, StripOffsets);
161: EXIF_TAG(0x0115, SamplesPerPixel);
162: EXIF_TAG(0x0116, RowsPerStrip);
163: EXIF_TAG(0x0117, StripByteCounts);
164: EXIF_TAG(0x011c, PlanarConfiguration);
165: EXIF_TAG(0x0156, TransferRange);
166: EXIF_TAG(0x0200, JPEGProc);
167: EXIF_TAG(0x0201, JPEGInterchangeFormat);
168: EXIF_TAG(0x0202, JPEGInterchangeFormatLength);
169: EXIF_TAG(0x0212, YCbCrSubSampling);
170: EXIF_TAG(0xa401, CustomRendered);
171: EXIF_TAG(0xa402, ExposureMode);
172: EXIF_TAG(0xa403, WhiteBalance);
173: EXIF_TAG(0xa404, DigitalZoomRatio);
174: EXIF_TAG(0xa405, FocalLengthIn35mmFilm);
175: EXIF_TAG(0xa406, SceneCaptureType);
176: EXIF_TAG(0xa407, GainControl);
177: EXIF_TAG(0xa408, Contrast);
178: EXIF_TAG(0xa409, Saturation);
179: EXIF_TAG(0xa40a, Sharpness);
180: EXIF_TAG(0xa40b, DeviceSettingDescription);
181: EXIF_TAG(0xa40c, SubjectDistanceRange);
182: EXIF_TAG(0xa420, ImageUniqueID);
1.149 moko 183:
184: // other tags
185: EXIF_TAG(0xa430, CameraOwnerName);
186: EXIF_TAG(0xa431, BodySerialNumber);
187: EXIF_TAG(0xa432, LensSpecification);
188: EXIF_TAG(0xa433, LensManufactor);
189: EXIF_TAG(0xa434, LensModel);
190: EXIF_TAG(0xa435, LensSerialNumber);
1.91 paf 191: }
192: } exif_tag_value2name;
193:
1.118 misha 194: class EXIF_gps_tag_value2name: public Hash<int, const char*> {
195: public:
196: EXIF_gps_tag_value2name() {
197: EXIF_TAG(0x0, GPSVersionID);
198: EXIF_TAG(0x1, GPSLatitudeRef);
199: EXIF_TAG(0x2, GPSLatitude);
200: EXIF_TAG(0x3, GPSLongitudeRef);
201: EXIF_TAG(0x4, GPSLongitude);
202: EXIF_TAG(0x5, GPSAltitudeRef);
203: EXIF_TAG(0x6, GPSAltitude);
204: EXIF_TAG(0x7, GPSTimeStamp);
205: EXIF_TAG(0x8, GPSSatellites);
206: EXIF_TAG(0x9, GPSStatus);
207: EXIF_TAG(0xA, GPSMeasureMode);
208: EXIF_TAG(0xB, GPSDOP);
209: EXIF_TAG(0xC, GPSSpeedRef);
210: EXIF_TAG(0xD, GPSSpeed);
211: EXIF_TAG(0xE, GPSTrackRef);
212: EXIF_TAG(0xF, GPSTrack);
213: EXIF_TAG(0x10, GPSImgDirectionRef);
214: EXIF_TAG(0x11, GPSImgDirection);
215: EXIF_TAG(0x12, GPSMapDatum);
216: EXIF_TAG(0x13, GPSDestLatitudeRef);
217: EXIF_TAG(0x14, GPSDestLatitude);
218: EXIF_TAG(0x15, GPSDestLongitudeRef);
219: EXIF_TAG(0x16, GPSDestLongitude);
220: EXIF_TAG(0x17, GPSDestBearingRef);
221: EXIF_TAG(0x18, GPSDestBearing);
222: EXIF_TAG(0x19, GPSDestDistanceRef);
223: EXIF_TAG(0x1A, GPSDestDistance);
224: EXIF_TAG(0x1B, GPSProcessingMethod);
225: EXIF_TAG(0x1C, GPSAreaInformation);
226: EXIF_TAG(0x1D, GPSDateStamp);
227: EXIF_TAG(0x1E, GPSDifferential);
228: }
229: } exif_gps_tag_value2name;
230:
1.169 ! moko 231: ///*********************************************** support functions
1.91 paf 232:
1.1 paf 233: class Measure_reader {
234: public:
1.91 paf 235: virtual size_t read(const char* &buf, size_t limit)=0;
1.79 paf 236: virtual void seek(long value, int whence)=0;
237: virtual long tell()=0;
1.77 paf 238: };
1.1 paf 239:
1.77 paf 240: class Measure_file_reader: public Measure_reader {
1.152 moko 241: const String& file_name;
1.91 paf 242: int f;
243:
1.77 paf 244: public:
1.152 moko 245: Measure_file_reader(int af, const String& afile_name):
246: file_name(afile_name), f(af) {
1.1 paf 247: }
248:
1.91 paf 249: override size_t read(const char* &abuf, size_t limit) {
1.77 paf 250: if(limit==0)
1.1 paf 251: return 0;
1.77 paf 252:
1.91 paf 253: char* lbuf=new(PointerFreeGC) char[limit];
1.143 moko 254: ssize_t read_size=::read(f, lbuf, limit); abuf=lbuf;
255: if(read_size<0)
256: throw Exception(0, &file_name, "measure read failed: %s (%d)", strerror(errno), errno);
1.1 paf 257: return read_size;
258: }
259:
1.91 paf 260: override void seek(long value, int whence) {
1.79 paf 261: if(lseek(f, value, whence)<0)
1.152 moko 262: throw Exception(IMAGE_FORMAT, &file_name, "seek(value=%ld, whence=%d) failed: %s (%d)", value, whence, strerror(errno), errno);
1.77 paf 263: }
264:
1.91 paf 265: override long tell() { return lseek(f, 0, SEEK_CUR); }
1.79 paf 266:
1.77 paf 267: };
268:
269: class Measure_buf_reader: public Measure_reader {
1.91 paf 270:
271: const char* buf; size_t size;
272: const String& file_name;
273:
274: size_t offset;
275:
1.77 paf 276: public:
1.91 paf 277: Measure_buf_reader(const char* abuf, size_t asize, const String& afile_name):
1.77 paf 278: buf(abuf), size(asize), file_name(afile_name), offset(0) {
279: }
280:
1.91 paf 281: override size_t read(const char* &abuf, size_t limit) {
1.77 paf 282: size_t to_read=min(limit, size-offset);
1.91 paf 283: abuf=buf+offset;
1.77 paf 284: offset+=to_read;
285: return to_read;
286: }
287:
1.91 paf 288: override void seek(long value, int whence) {
1.79 paf 289: size_t new_offset;
290: switch(whence) {
291: case SEEK_CUR: new_offset=offset+value; break;
292: case SEEK_SET: new_offset=(size_t)value; break;
1.164 moko 293: case SEEK_END: new_offset=size; break;
1.91 paf 294: default:
1.155 moko 295: throw Exception(0, 0, "whence #%d not supported", 0, whence);
1.91 paf 296: break; // never
1.79 paf 297: }
298:
1.77 paf 299: if((ssize_t)new_offset<0 || new_offset>size)
1.155 moko 300: throw Exception(IMAGE_FORMAT, &file_name, "seek(value=%l, whence=%d) failed: out of buffer, new_offset>size (%l>%l) or new_offset<0",
1.79 paf 301: value, whence, new_offset, size);
1.77 paf 302: offset=new_offset;
303: }
304:
1.91 paf 305: override long tell() { return offset; }
1.79 paf 306:
1.1 paf 307: };
1.77 paf 308:
1.1 paf 309:
1.169 ! moko 310: struct Measure_info {
! 311: ushort width;
! 312: ushort height;
! 313: Value** exif;
! 314: Value** xmp;
! 315: Charset* xmp_charset;
1.72 paf 316: };
317:
1.164 moko 318:
1.169 ! moko 319: inline ushort x_endian_to_ushort(uchar b0, uchar b1) {
! 320: return (ushort)((b1<<8) + b0);
! 321: }
! 322:
! 323: inline uint x_endian_to_uint(uchar b0, uchar b1, uchar b2, uchar b3) {
! 324: return (uint)(((((b3<<8) + b2)<<8)+b1)<<8)+b0;
! 325: }
! 326:
! 327: inline ushort endian_to_ushort(bool is_big, const uchar *b/* [2] */) {
! 328: return is_big ? x_endian_to_ushort(b[1], b[0]) : x_endian_to_ushort(b[0], b[1]);
! 329: }
! 330:
! 331: inline uint endian_to_uint(bool is_big, const uchar *b /* [4] */) {
! 332: return is_big ? x_endian_to_uint(b[3], b[2], b[1], b[0]) : x_endian_to_uint(b[0], b[1], b[2], b[3]);
! 333: }
1.1 paf 334:
1.169 ! moko 335: ///*********************************************** JPEG
1.31 parser 336: struct JPG_Segment_head {
1.80 paf 337: uchar marker;
338: uchar code;
339: uchar length[2];
1.1 paf 340: };
1.21 paf 341: /// JPEG frame header
1.31 parser 342: struct JPG_Size_segment_body {
1.164 moko 343: char data; //< data precision of bits/sample
344: uchar height[2]; //< image height
345: uchar width[2]; //< image width
346: char numComponents; //< number of color components
1.1 paf 347: };
348:
1.80 paf 349: /// JPEG Exif TIFF Header
350: struct JPG_Exif_TIFF_header {
1.165 moko 351: char byte_align_identifier[2];
352: uchar signature[2]; // always 000A [or 0A00]
1.80 paf 353: uchar first_IFD_offset[4]; // Usually the first IFD starts immediately next to TIFF header, so this offset has value '0x00000008'.
354: };
355:
356: // JPEG Exif IFD start
1.91 paf 357: struct JPG_Exif_IFD_begin {
1.80 paf 358: uchar directory_entry_count[2]; // the number of directory entry contains in this IFD
359: };
360:
361: // TTTT ffff NNNNNNNN DDDDDDDD
362: struct JPG_Exif_IFD_entry {
363: uchar tag[2]; // Tag number, this shows a kind of data
364: uchar format[2]; // data format
365: uchar components_count[4]; // number of components
366: uchar value_or_offset_to_it[4]; // data value or offset to data value
367: };
368:
369: #define JPG_IFD_TAG_EXIF_OFFSET 0x8769
370:
1.118 misha 371: #define JPG_IFD_TAG_EXIF_GPS_OFFSET 0x8825
372:
1.89 paf 373: #define JPEG_EXIF_DATE_CHARS 20
374:
1.155 moko 375: static Value* parse_IFD_entry_formatted_one_value(bool is_big, ushort format, size_t component_size, const uchar *value) {
1.80 paf 376: switch(format) {
377: case 1: // unsigned byte
1.91 paf 378: return new VInt((uchar)value[0]);
1.80 paf 379: case 3: // unsigned short
1.91 paf 380: return new VInt(endian_to_ushort(is_big, value));
1.80 paf 381: case 4: // unsigned long
382: // 'double' because parser's Int is signed
1.91 paf 383: return new VDouble(endian_to_uint(is_big, value));
1.80 paf 384: case 5: // unsigned rational
385: {
386: uint numerator=endian_to_uint(is_big, value); value+=component_size/2;
387: uint denominator=endian_to_uint(is_big, value);
388: if(!denominator)
389: return 0;
1.91 paf 390: return new VDouble(((double)numerator)/denominator);
1.80 paf 391: }
392: case 6: // signed byte
1.91 paf 393: return new VInt((signed char)value[0]);
1.80 paf 394: case 8: // signed short
1.91 paf 395: return new VInt((signed short)endian_to_ushort(is_big, value));
1.80 paf 396: case 9: // signed long
1.91 paf 397: return new VInt((signed int)endian_to_uint(is_big, value));
1.80 paf 398: case 10: // signed rational
399: {
400: signed int numerator=(signed int)endian_to_uint(is_big, value); value+=component_size/2;
401: uint denominator=endian_to_uint(is_big, value);
402: if(!denominator)
403: return 0;
1.91 paf 404: return new VDouble(numerator/denominator);
1.80 paf 405: }
406: /*
407: case 11: // single float
1.120 misha 408: @todo
1.80 paf 409: case 12: // double float
1.120 misha 410: @todo
1.80 paf 411: */
412: };
413:
414: return 0;
415: }
416:
1.89 paf 417: // date.C
1.147 moko 418: tm cstr_to_time_t(char *, const char **);
1.89 paf 419:
1.155 moko 420: static Value* parse_IFD_entry_formatted_value(bool is_big, ushort format, size_t component_size, uint components_count, const uchar *value) {
1.80 paf 421: if(format==2) { // ascii string, exception: the only type with varying size
1.91 paf 422: const char* cstr=(const char* )value;
423: size_t length=components_count;
1.89 paf 424: // Data format is "YYYY:MM:DD HH:MM:SS"+0x00, total 20bytes
1.155 moko 425: if(length==JPEG_EXIF_DATE_CHARS && isdigit((unsigned char)cstr[0]) && cstr[length-1]==0) {
426: char cstr_writable[JPEG_EXIF_DATE_CHARS];
1.89 paf 427: strcpy(cstr_writable, cstr);
428:
1.106 paf 429: try {
1.147 moko 430: tm tmIn=cstr_to_time_t(cstr_writable, 0);
1.146 moko 431: return new VDate(tmIn);
1.106 paf 432: }
433: catch(...) { /*ignore bad date times*/ }
1.89 paf 434: }
435:
1.123 misha 436: return new VString(*new String(cstr, String::L_TAINTED));
1.80 paf 437: }
438:
439: if(components_count==1)
1.91 paf 440: return parse_IFD_entry_formatted_one_value(is_big, format, component_size, value);
1.80 paf 441:
1.91 paf 442: VHash* result=new VHash;
443: HashStringValue& hash=result->hash();
1.80 paf 444: for(uint i=0; i<components_count; i++, value+=component_size) {
1.91 paf 445: hash.put(
1.93 paf 446: String::Body::Format(i),
1.91 paf 447: parse_IFD_entry_formatted_one_value(is_big, format, component_size, value));
1.80 paf 448: }
449:
1.91 paf 450: return result;
1.80 paf 451: }
452:
1.155 moko 453: static Value* parse_IFD_entry_value(bool is_big, Measure_reader& reader, long tiff_base, JPG_Exif_IFD_entry& entry) {
1.80 paf 454: size_t format2component_size[]={
455: 0, // undefined
456: 1, // unsigned byte
457: 1, // ascii string
458: 2, // unsigned short
459: 4, // unsigned long
460: 8, // unsigned rational
461: 1, // signed byte
462: 0, // undefined
463: 2, // signed short
464: 4, // signed long
465: 8, // signed rational
466: /*
467: 4, // single float
468: 8, // double float
469: */
470: };
471:
472: ushort format=endian_to_ushort(is_big, entry.format);
473: if(format>=sizeof(format2component_size)/sizeof(format2component_size[0]))
474: return 0; // format out of range, ignoring
475:
476: size_t component_size=format2component_size[format];
477: if(component_size==0)
478: return 0; // undefined format
479:
480: // You can get the total data byte length by multiplies
481: // a 'bytes/components' value (see above chart) by number of components stored 'NNNNNNNN' area
482: uint components_count=endian_to_uint(is_big, entry.components_count);
1.121 misha 483: uint value_size=component_size*components_count;
1.80 paf 484: // If its size is over 4bytes, 'DDDDDDDD' contains the offset to data stored address
1.91 paf 485: Value* result;
1.80 paf 486:
487: if(value_size<=4)
1.155 moko 488: result=parse_IFD_entry_formatted_value(is_big, format, component_size, components_count, entry.value_or_offset_to_it);
1.80 paf 489: else {
490: long remembered=reader.tell();
491: {
492: reader.seek(tiff_base+endian_to_uint(is_big, entry.value_or_offset_to_it), SEEK_SET);
1.91 paf 493: const char* value;
1.156 moko 494: if(reader.read(value, value_size)<value_size)
1.80 paf 495: return 0;
1.155 moko 496: result=parse_IFD_entry_formatted_value(is_big, format, component_size, components_count, (const uchar*)value);
1.80 paf 497: }
498: reader.seek(remembered, SEEK_SET);
499: }
500:
501: return result;
502: }
503:
1.155 moko 504: static void parse_IFD(HashStringValue& hash, bool is_big, Measure_reader& reader, long tiff_base, bool gps=false);
1.91 paf 505:
1.155 moko 506: static void parse_IFD_entry(HashStringValue& hash, bool is_big, Measure_reader& reader, long tiff_base, JPG_Exif_IFD_entry& entry, bool gps=false) {
1.80 paf 507: ushort tag=endian_to_ushort(is_big, entry.tag);
1.118 misha 508:
509: if(tag==JPG_IFD_TAG_EXIF_OFFSET || tag==JPG_IFD_TAG_EXIF_GPS_OFFSET){
1.80 paf 510: long remembered=reader.tell();
511: {
512: reader.seek(tiff_base+endian_to_uint(is_big, entry.value_or_offset_to_it), SEEK_SET);
1.118 misha 513: parse_IFD(hash, is_big, reader, tiff_base, (tag==JPG_IFD_TAG_EXIF_GPS_OFFSET)?true:gps);
1.80 paf 514: }
515: reader.seek(remembered, SEEK_SET);
516: return;
517: }
1.118 misha 518:
1.91 paf 519: if(Value* value=parse_IFD_entry_value(is_big, reader, tiff_base, entry)) {
1.118 misha 520: if(const char* name=(gps)?exif_gps_tag_value2name.get(tag):exif_tag_value2name.get(tag))
1.148 moko 521: hash.put(name, value);
1.80 paf 522: else
1.93 paf 523: hash.put(String::Body::Format(tag), value);
1.80 paf 524: }
1.1 paf 525: }
526:
1.155 moko 527: static void parse_IFD(HashStringValue& hash, bool is_big, Measure_reader& reader, long tiff_base, bool gps) {
1.91 paf 528: const char* buf;
529: if(reader.read(buf, sizeof(JPG_Exif_IFD_begin))<sizeof(JPG_Exif_IFD_begin))
1.80 paf 530: return;
1.91 paf 531: JPG_Exif_IFD_begin *start=(JPG_Exif_IFD_begin *)buf;
1.80 paf 532:
533: ushort directory_entry_count=endian_to_ushort(is_big, start->directory_entry_count);
534: for(int i=0; i<directory_entry_count; i++) {
535: if(reader.read(buf, sizeof(JPG_Exif_IFD_entry))<sizeof(JPG_Exif_IFD_entry))
536: return;
537:
1.118 misha 538: parse_IFD_entry(hash, is_big, reader, tiff_base, *(JPG_Exif_IFD_entry *)buf, gps);
1.80 paf 539: }
540: // then goes: LLLLLLLL Offset to next IFD [not going there]
541: }
542:
1.162 moko 543: static Value* parse_exif(Measure_reader& reader) {
1.91 paf 544: const char* buf;
1.80 paf 545:
546: uint tiff_base=reader.tell();
547: if(reader.read(buf, sizeof(JPG_Exif_TIFF_header))<sizeof(JPG_Exif_TIFF_header))
548: return 0;
549:
550: JPG_Exif_TIFF_header *head=(JPG_Exif_TIFF_header *)buf;
551: bool is_big=head->byte_align_identifier[0]=='M'; // [M]otorola vs [I]ntel
552:
553: uint first_IFD_offset=endian_to_uint(is_big, head->first_IFD_offset);
554: reader.seek(tiff_base+first_IFD_offset, SEEK_SET);
555:
1.91 paf 556: VHash* vhash=new VHash;
1.80 paf 557:
558: // IFD
1.91 paf 559: parse_IFD(vhash->hash(), is_big, reader, tiff_base);
1.80 paf 560:
1.91 paf 561: return vhash;
1.80 paf 562: }
563:
1.163 moko 564: static Value* parse_xmp(Measure_reader& reader, ushort xmp_length, Measure_info &info) {
1.162 moko 565: const char* buf;
566: if(reader.read(buf, xmp_length)<xmp_length)
567: return 0;
1.163 moko 568:
569: String::C xmp = Charset::transcode(String::C(pa_strdup(buf, xmp_length), xmp_length), *info.xmp_charset, pa_thread_request().charsets.source());
570: return new VString(*new String(xmp, String::L_TAINTED));
1.162 moko 571: }
572:
573: static void measure_jpeg(const String& origin_string, Measure_reader& reader, Measure_info &info) {
1.2 paf 574: // JFIF format markers
1.80 paf 575: const uchar MARKER=0xFF;
576: const uchar CODE_SIZE_A=0xC0;
577: const uchar CODE_SIZE_B=0xC1;
578: const uchar CODE_SIZE_C=0xC2;
579: const uchar CODE_SIZE_D=0xC3;
1.162 moko 580: const uchar CODE_APP1=0xE1;
1.2 paf 581:
1.91 paf 582: const char* buf;
1.18 paf 583: const size_t prefix_size=2;
1.31 parser 584: if(reader.read(buf, prefix_size)<prefix_size)
1.155 moko 585: throw Exception(IMAGE_FORMAT, &origin_string, "not JPEG file - too small");
1.80 paf 586: uchar *signature=(uchar *)buf;
1.1 paf 587:
1.31 parser 588: if(!(signature[0]==0xFF && signature[1]==0xD8))
1.155 moko 589: throw Exception(IMAGE_FORMAT, &origin_string, "not JPEG file - wrong signature");
1.31 parser 590:
591: while(true) {
1.80 paf 592: uint segment_base=reader.tell()+2/*marker,code*/;
1.31 parser 593: if(reader.read(buf, sizeof(JPG_Segment_head))<sizeof(JPG_Segment_head))
1.79 paf 594: break;
1.31 parser 595: JPG_Segment_head *head=(JPG_Segment_head *)buf;
596:
1.162 moko 597: // Verify that it's a valid segment.
1.31 parser 598: if(head->marker!=MARKER)
1.155 moko 599: throw Exception(IMAGE_FORMAT, &origin_string, "not JPEG file - marker not found");
1.79 paf 600:
1.162 moko 601: ushort segment_length=endian_to_ushort(true, head->length);
602:
1.79 paf 603: switch(head->code) {
1.162 moko 604: // http://dev.exiv2.org/projects/exiv2/wiki/The_Metadata_in_JPEG_files
605: case CODE_APP1:
606: {
607: const size_t EXIF_SIG_LEN=6; // Exif\0\0
608: const size_t XMP_SIG_LEN=29; // http://ns.adobe.com/xap/1.0/\0
609:
610: if(segment_length<EXIF_SIG_LEN+2 || reader.read(buf, EXIF_SIG_LEN)<EXIF_SIG_LEN)
611: break;
612: if(memcmp(buf, "Exif\0\0", EXIF_SIG_LEN)==0){
613: if(info.exif && !*info.exif) // backward compatibility: using first segment
614: *info.exif=parse_exif(reader);
615: break;
616: }
617:
618: if(memcmp(buf, "http:/", EXIF_SIG_LEN))
619: break;
620: if(segment_length<XMP_SIG_LEN+2 || reader.read(buf, XMP_SIG_LEN-EXIF_SIG_LEN)<XMP_SIG_LEN-EXIF_SIG_LEN)
621: break;
622: if(memcmp(buf, "/ns.adobe.com/xap/1.0/\0", XMP_SIG_LEN-EXIF_SIG_LEN)==0){
623: if(info.xmp && !*info.xmp) // backward compatibility: using first segment
1.163 moko 624: *info.xmp=parse_xmp(reader, segment_length - XMP_SIG_LEN - 2 /* segment_length */, info);
1.162 moko 625: }
626:
627: }
1.1 paf 628: break;
1.31 parser 629:
1.79 paf 630: case CODE_SIZE_A:
631: case CODE_SIZE_B:
632: case CODE_SIZE_C:
633: case CODE_SIZE_D:
634: {
635: // Segments that contain size info
636: if(reader.read(buf, sizeof(JPG_Size_segment_body))<sizeof(JPG_Size_segment_body))
1.155 moko 637: throw Exception(IMAGE_FORMAT, &origin_string, "not JPEG file - can not fully read Size segment");
1.79 paf 638: JPG_Size_segment_body *body=(JPG_Size_segment_body *)buf;
639:
1.162 moko 640: info.width=endian_to_ushort(true, body->width);
641: info.height=endian_to_ushort(true, body->height);
642: }
1.80 paf 643: return;
1.79 paf 644: };
645:
1.162 moko 646: reader.seek(segment_base + segment_length, SEEK_SET);
1.31 parser 647: }
648:
1.155 moko 649: throw Exception(IMAGE_FORMAT, &origin_string, "broken JPEG file - size frame not found");
1.1 paf 650: }
651:
1.169 ! moko 652: ///*********************************************** TIFF
! 653:
1.165 moko 654: static bool parse_tiff_IFD(bool is_big, Measure_reader& reader, Measure_info &info) {
655: const char* buf;
656: if(reader.read(buf, sizeof(JPG_Exif_IFD_begin))<sizeof(JPG_Exif_IFD_begin))
657: return false;
658: JPG_Exif_IFD_begin *start=(JPG_Exif_IFD_begin *)buf;
659:
660: ushort directory_entry_count=endian_to_ushort(is_big, start->directory_entry_count);
661: for(int i=0; i<directory_entry_count; i++) {
662: if(reader.read(buf, sizeof(JPG_Exif_IFD_entry))<sizeof(JPG_Exif_IFD_entry))
663: return false;
664:
665: JPG_Exif_IFD_entry *entry=(JPG_Exif_IFD_entry *)buf;
666: ushort entry_tag=endian_to_ushort(is_big, entry->tag);
667:
668: if(entry_tag == 256 || entry_tag == 257){
669: ushort entry_format=endian_to_ushort(is_big, entry->format);
670: if(entry_format != 3 && entry_format != 4 || endian_to_uint(is_big, entry->components_count) != 1)
671: return false;
672: uint value = (entry_format == 3) ? endian_to_ushort(is_big, entry->value_or_offset_to_it) : endian_to_uint(is_big, entry->value_or_offset_to_it);
673: (entry_tag == 256) ? info.width=value : info.height=value;
674: if(info.width && info.height)
675: return true;
676: }
677: }
678:
679: return false;
680: // then goes: LLLLLLLL Offset to next IFD [not going there]
681: }
682:
683: static void measure_tiff(const String& origin_string, Measure_reader& reader, Measure_info &info) {
684: const char* buf;
685:
686: if(reader.read(buf, sizeof(JPG_Exif_TIFF_header))<sizeof(JPG_Exif_TIFF_header))
687: throw Exception(IMAGE_FORMAT, &origin_string, "not TIFF file - too small");
688:
689: JPG_Exif_TIFF_header *head=(JPG_Exif_TIFF_header *)buf;
690:
691: if(strncmp(head->byte_align_identifier, "II", 2)!=0 && strncmp(head->byte_align_identifier, "MM", 2)!=0)
692: throw Exception(IMAGE_FORMAT, &origin_string, "not TIFF file - wrong signature");
693:
694: bool is_big=head->byte_align_identifier[0]=='M'; // [M]otorola vs [I]ntel
695:
696: if(endian_to_ushort(is_big, head->signature) != 42)
697: throw Exception(IMAGE_FORMAT, &origin_string, "not TIFF file - wrong signature");
698:
699: reader.seek(endian_to_uint(is_big, head->first_IFD_offset), SEEK_SET);
700: if(!parse_tiff_IFD(is_big, reader, info))
701: throw Exception(IMAGE_FORMAT, &origin_string, "broken TIFF file - size field entry not found");
702: }
703:
1.169 ! moko 704:
! 705: ///*********************************************** GIF
! 706:
! 707: struct GIF_Header {
! 708: char signature[3]; // 'GIF'
! 709: char version[3];
! 710: uchar width[2];
! 711: uchar height[2];
! 712: char dif;
! 713: char fonColor;
! 714: char nulls;
! 715: };
! 716:
1.164 moko 717: static void measure_gif(const String& origin_string, Measure_reader& reader, ushort& width, ushort& height) {
718:
719: const char* buf;
720: const size_t head_size=sizeof(GIF_Header);
721: if(reader.read(buf, head_size)<head_size)
722: throw Exception(IMAGE_FORMAT, &origin_string, "not GIF file - too small");
723: GIF_Header *head=(GIF_Header *)buf;
724:
725: if(strncmp(head->signature, "GIF", 3)!=0)
726: throw Exception(IMAGE_FORMAT, &origin_string, "not GIF file - wrong signature");
727:
728: width=endian_to_ushort(false, head->width);
729: height=endian_to_ushort(false, head->height);
730: }
731:
1.169 ! moko 732:
! 733: ///*********************************************** PNG
! 734:
! 735: struct PNG_Header {
! 736: char dummy[12];
! 737: char signature[4]; //< must be "IHDR"
! 738: uchar high_width[2]; //< image width high bytes [we ignore for now]
! 739: uchar width[2]; //< image width low bytes
! 740: uchar high_height[2]; //< image height high bytes [we ignore for now]
! 741: uchar height[4]; //< image height
! 742: };
! 743:
1.152 moko 744: static void measure_png(const String& origin_string, Measure_reader& reader, ushort& width, ushort& height) {
1.72 paf 745:
1.91 paf 746: const char* buf;
1.102 paf 747: const size_t head_size=sizeof(PNG_Header);
748: if(reader.read(buf, head_size)<head_size)
1.152 moko 749: throw Exception(IMAGE_FORMAT, &origin_string, "not PNG file - too small");
1.72 paf 750: PNG_Header *head=(PNG_Header *)buf;
751:
752: if(strncmp(head->signature, "IHDR", 4)!=0)
1.152 moko 753: throw Exception(IMAGE_FORMAT, &origin_string, "not PNG file - wrong signature");
1.72 paf 754:
1.80 paf 755: width=endian_to_ushort(true, head->width);
756: height=endian_to_ushort(true, head->height);
1.72 paf 757: }
758:
1.169 ! moko 759:
! 760: ///*********************************************** BMP
! 761:
! 762: struct BMP_Header {
! 763: char signature[2]; // 'BM'
! 764: uchar file_size[4];
! 765: uchar reserved[4];
! 766: uchar bitmap_offset[4];
! 767: uchar header_size[4];
! 768: uchar width[2];
! 769: uchar high_width[2]; //< image width high bytes [we ignore for now]
! 770: uchar height[2];
! 771: uchar high_height[2]; //< image height high bytes [we ignore for now]
! 772: };
! 773:
1.164 moko 774: static void measure_bmp(const String& origin_string, Measure_reader& reader, ushort& width, ushort& height) {
775:
776: const char* buf;
777: const size_t head_size=sizeof(BMP_Header);
778: if(reader.read(buf, head_size)<head_size)
779: throw Exception(IMAGE_FORMAT, &origin_string, "not BMP file - too small");
780: BMP_Header *head=(BMP_Header *)buf;
781:
782: if(strncmp(head->signature, "BM", 2)!=0)
783: throw Exception(IMAGE_FORMAT, &origin_string, "not BMP file - wrong signature");
784:
785: reader.seek(0, SEEK_END);
1.166 moko 786: if((uint)reader.tell() != endian_to_uint(false, head->file_size))
1.164 moko 787: throw Exception(IMAGE_FORMAT, &origin_string, "not BMP file - length header and file size do not match");
788:
789: width=endian_to_ushort(false, head->width);
790: height=endian_to_ushort(false, head->height);
791: }
792:
1.168 moko 793:
1.169 ! moko 794: ///*********************************************** WEBP
! 795:
! 796: struct WEBP_Header {
! 797: char signature_riff[4]; // 'RIFF'
! 798: uchar file_size[4];
! 799: char signature[4]; // 'WEBP'
! 800: char format[4]; // 'VP8 ' or 'VP8L' or 'VP8X'
! 801: };
! 802:
! 803: struct WEBP_VP8_Chunk {
! 804: uchar size[4];
! 805: char tag[3];
! 806: uchar signature[3]; // 0x9D 0x01 0x2A
! 807: uchar width[2]; // 14 bits each
! 808: uchar height[2]; // 14 bits each
! 809: };
! 810:
! 811: struct WEBP_VP8L_Chunk {
! 812: uchar size[4];
! 813: char signature; // 0x2F
! 814: uchar width_height[4]; // 14 bits each
! 815: };
! 816:
! 817: struct WEBP_X_Chunk {
! 818: uchar size[4];
! 819: char reserved[4];
! 820: uchar width[3];
! 821: uchar height[3];
! 822: };
! 823:
1.168 moko 824: static void measure_webp(const String& origin_string, Measure_reader& reader, ushort& width, ushort& height) {
825: const char* buf;
826:
827: if(reader.read(buf, sizeof(WEBP_Header))<sizeof(WEBP_Header))
828: throw Exception(IMAGE_FORMAT, &origin_string, "not WEBP file - too small");
829:
830: WEBP_Header *head=(WEBP_Header *)buf;
831:
832: if(strncmp(head->signature_riff, "RIFF", 4)!=0 || strncmp(head->signature, "WEBP", 4)!=0)
833: throw Exception(IMAGE_FORMAT, &origin_string, "not WEBP file - wrong signature");
834:
835: if(strncmp(head->format, "VP8 ", 4)==0){
836: if(reader.read(buf, sizeof(WEBP_VP8_Chunk))<sizeof(WEBP_VP8_Chunk))
837: throw Exception(IMAGE_FORMAT, &origin_string, "broken WEBP file - too small VP8 chunk");
838:
839: WEBP_VP8_Chunk *chunk=(WEBP_VP8_Chunk *)buf;
840: if (chunk->signature[0] != 0x9D || chunk->signature[1] != 0x01 || chunk->signature[2] != 0x2A)
841: throw Exception(IMAGE_FORMAT, &origin_string, "broken WEBP file - wrong VP8 chunk signature");
842:
843: width=endian_to_ushort(false, chunk->width) & 0x3FFF;
844: height=endian_to_ushort(false, chunk->height) & 0x3FFF;
845: } else if(strncmp(head->format, "VP8L", 4)==0){
846: if(reader.read(buf, sizeof(WEBP_VP8L_Chunk))<sizeof(WEBP_VP8L_Chunk))
847: throw Exception(IMAGE_FORMAT, &origin_string, "broken WEBP file - too small VP8L chunk");
848:
849: WEBP_VP8L_Chunk *chunk=(WEBP_VP8L_Chunk *)buf;
850: if(chunk->signature != 0x2F)
851: throw Exception(IMAGE_FORMAT, &origin_string, "broken WEBP file - wrong VP8L chunk signature");
852:
853: uint wh=endian_to_uint(false, chunk->width_height);
854: width=(wh & 0x3FFF) + 1;
855: height=((wh >> 14) & 0x3FFF) + 1;
856: } else if (strncmp(head->format, "VP8X", 4)==0){
857: if(reader.read(buf, sizeof(WEBP_X_Chunk))<sizeof(WEBP_X_Chunk))
858: throw Exception(IMAGE_FORMAT, &origin_string, "broken WEBP file - too small VP8X chunk");
859:
860: WEBP_X_Chunk *chunk=(WEBP_X_Chunk *)buf;
861:
862: width=endian_to_ushort(false, chunk->width) + 1; // we ignore third byte to simplify code
863: height=endian_to_ushort(false, chunk->height) + 1; // we ignore third byte to simplify code
864: } else throw Exception(IMAGE_FORMAT, &origin_string, "broken WEBP file - invalid chunk signature");
865: }
866:
1.169 ! moko 867: ///*********************************************** measure center
1.1 paf 868:
1.162 moko 869: static void measure(const String& file_name, Measure_reader& reader, Measure_info &info) {
1.128 misha 870: const char* file_name_cstr=file_name.taint_cstr(String::L_FILE_SPEC);
1.91 paf 871: if(const char* cext=strrchr(file_name_cstr, '.')) {
1.1 paf 872: cext++;
873: if(strcasecmp(cext, "GIF")==0)
1.162 moko 874: measure_gif(file_name, reader, info.width, info.height);
1.165 moko 875: else if(strcasecmp(cext, "JPG")==0 || strcasecmp(cext, "JPEG")==0)
1.162 moko 876: measure_jpeg(file_name, reader, info);
1.72 paf 877: else if(strcasecmp(cext, "PNG")==0)
1.162 moko 878: measure_png(file_name, reader, info.width, info.height);
1.164 moko 879: else if(strcasecmp(cext, "BMP")==0)
880: measure_bmp(file_name, reader, info.width, info.height);
1.168 moko 881: else if(strcasecmp(cext, "WEBP")==0)
882: measure_webp(file_name, reader, info.width, info.height);
1.165 moko 883: else if(strcasecmp(cext, "TIF")==0 || strcasecmp(cext, "TIFF")==0)
884: measure_tiff(file_name, reader, info);
1.1 paf 885: else
1.152 moko 886: throw Exception(IMAGE_FORMAT, &file_name, "unhandled image file name extension '%s'", cext);
1.1 paf 887: } else
1.152 moko 888: throw Exception(IMAGE_FORMAT, &file_name, "can not determine image type - no file name extension");
1.1 paf 889: }
890:
1.77 paf 891: // methods
1.1 paf 892:
1.152 moko 893: static void file_measure_action(struct stat& /*finfo*/, int f, const String& file_spec, void *context) {
894: Measure_file_reader reader(f, file_spec);
1.162 moko 895: measure(file_spec, reader, *static_cast<Measure_info *>(context));
1.1 paf 896: }
897:
1.91 paf 898: static void _measure(Request& r, MethodParams& params) {
899: Value& data=params.as_no_junction(0, "data must not be code");
1.1 paf 900:
1.91 paf 901: Value* exif=0;
1.162 moko 902: Value* xmp=0;
1.163 moko 903: Measure_info info={ 0, 0, 0, 0, &pa_UTF8_charset };
904:
905: if(params.count()>1)
906: if(HashStringValue* options=params.as_hash(1, "methods options")) {
907: int valid_options=0;
908: for(HashStringValue::Iterator i(*options); i; i.next() ){
909: String::Body key=i.key();
910: Value* value=i.value();
911: if(key == "exif") {
912: if(r.process(*value).as_bool())
913: info.exif=&exif;
914: valid_options++;
915: }
916: if(key == "xmp") {
917: if(r.process(*value).as_bool())
918: info.xmp=&xmp;
919: valid_options++;
920: }
921: if(key == "xmp-charset") {
922: info.xmp_charset=&pa_charsets.get(value->as_string());
923: valid_options++;
924: }
925: }
926: if(valid_options!=options->count())
927: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
928: }
1.162 moko 929:
1.91 paf 930: const String* file_name;
1.162 moko 931:
932: if(file_name=data.get_string()) {
1.167 moko 933: file_read_action_under_lock(r.full_disk_path(*file_name), "measure", file_measure_action, &info);
1.1 paf 934: } else {
1.129 misha 935: VFile* vfile=data.as_vfile(String::L_AS_IS);
1.91 paf 936: file_name=&vfile->fields().get(name_name)->as_string();
1.162 moko 937: Measure_buf_reader reader(vfile->value_ptr(), vfile->value_size(), *file_name);
938: measure(*file_name, reader, info);
1.1 paf 939: }
940:
1.162 moko 941: GET_SELF(r, VImage).set(file_name, info.width, info.height, 0, exif, xmp);
1.1 paf 942: }
943:
1.161 moko 944: static void append_attrib_pair(String &tag, String::Body key, Value* value){
945: // skip border attribute with empty value
946: if(key=="border" && !value->is_defined())
1.4 paf 947: return;
948:
1.133 misha 949: // src="a.gif" width="123" ismap[=-1]
1.161 moko 950: tag << " " << key;
1.91 paf 951: if(value->is_string() || value->as_int()>=0)
1.161 moko 952: tag << "=\"" << value->as_string() << "\"";
1.3 paf 953: }
1.161 moko 954:
1.91 paf 955: static void _html(Request& r, MethodParams& params) {
956: String tag;
1.3 paf 957: tag << "<img";
1.4 paf 958:
1.91 paf 959: const HashStringValue& fields=GET_SELF(r, VImage).fields();
960: HashStringValue* attribs=0;
1.4 paf 961:
1.91 paf 962: if(params.count()) {
1.69 paf 963: // for backward compatibility: someday was ^html{}
1.154 moko 964: Value& vattribs=r.process(params[0]);
1.145 moko 965: if(!vattribs.is_string()) { // allow empty
1.100 paf 966: if((attribs=vattribs.get_hash())) {
1.161 moko 967: for(HashStringValue::Iterator i(*attribs); i; i.next() )
968: append_attrib_pair(tag, i.key(), i.value());
1.39 parser 969: } else
1.155 moko 970: throw Exception(PARSER_RUNTIME, 0, "attributes must be hash");
1.145 moko 971: }
1.39 parser 972: }
1.4 paf 973:
1.161 moko 974: for(HashStringValue::Iterator i(fields); i; i.next() ){
975: String::Body key=i.key();
976: // skip user-specified attributes
977: if(attribs && attribs->get(key))
978: continue;
979: // allow only html attributes (to exclude exif, line-*)
980: if(key=="src" || key=="width" || key=="height" || key=="border")
981: append_attrib_pair(tag, key, i.value());
1.91 paf 982: }
1.161 moko 983:
1.6 paf 984: tag << " />";
1.157 moko 985: r.write(tag);
1.3 paf 986: }
1.8 paf 987:
1.68 paf 988: /// @test wrap FILE to auto-object
1.155 moko 989: static gdImage* load(Request& r, const String& file_name){
1.167 moko 990: const char* file_name_cstr=r.full_disk_path(file_name).taint_cstr(String::L_FILE_SPEC);
1.159 moko 991: if(FILE *f=pa_fopen(file_name_cstr, "rb")) {
1.91 paf 992: gdImage* image=new gdImage;
993: bool ok=image->CreateFromGif(f);
1.16 paf 994: fclose(f);
1.23 paf 995: if(!ok)
1.155 moko 996: throw Exception(IMAGE_FORMAT, &file_name, "is not in GIF format");
1.91 paf 997: return image;
1.16 paf 998: } else {
1.155 moko 999: throw Exception("file.missing", 0, "can not open '%s'", file_name_cstr);
1.16 paf 1000: }
1001: }
1002:
1003:
1.91 paf 1004: static void _load(Request& r, MethodParams& params) {
1.116 misha 1005: const String& file_name=params.as_string(0, FILE_NAME_MUST_NOT_BE_CODE);
1.6 paf 1006:
1.91 paf 1007: gdImage* image=load(r, file_name);
1008: GET_SELF(r, VImage).set(&file_name, image->SX(), image->SY(), image);
1.6 paf 1009: }
1010:
1.91 paf 1011: static void _create(Request& r, MethodParams& params) {
1012: int width=params.as_int(0, "width must be int", r);
1013: int height=params.as_int(1, "height must be int", r);
1.8 paf 1014: int bgcolor_value=0xffFFff;
1.91 paf 1015: if(params.count()>2)
1016: bgcolor_value=params.as_int(2, "color must be int", r);
1017: gdImage* image=new gdImage;
1018: image->Create(width, height);
1019: image->FilledRectangle(0, 0, width-1, height-1, image->Color(bgcolor_value));
1020: GET_SELF(r, VImage).set(0, width, height, image);
1.6 paf 1021: }
1022:
1.91 paf 1023: static void _gif(Request& r, MethodParams& params) {
1.108 paf 1024: gdImage& image=GET_SELF(r, VImage).image();
1.6 paf 1025:
1.138 misha 1026: const String *file_name=params.count()>0?¶ms.as_string(0, FILE_NAME_MUST_BE_STRING):0;
1.10 paf 1027:
1.108 paf 1028: gdBuf buf=image.Gif();
1.6 paf 1029:
1.91 paf 1030: VFile& vfile=*new VFile;
1.137 misha 1031:
1.142 moko 1032: vfile.set_binary(false/*not tainted*/, (const char *)buf.ptr, buf.size, file_name, new VString(*new String("image/gif")));
1.137 misha 1033:
1.157 moko 1034: r.write(vfile);
1.6 paf 1035: }
1036:
1.91 paf 1037: static void _line(Request& r, MethodParams& params) {
1.108 paf 1038: gdImage& image=GET_SELF(r, VImage).image();
1.12 paf 1039:
1.108 paf 1040: image.Line(
1.91 paf 1041: params.as_int(0, "x0 must be int", r),
1042: params.as_int(1, "y0 must be int", r),
1043: params.as_int(2, "x1 must be int", r),
1044: params.as_int(3, "y1 must be int", r),
1.108 paf 1045: image.Color(params.as_int(4, "color must be int", r)));
1.13 paf 1046: }
1047:
1.91 paf 1048: static void _fill(Request& r, MethodParams& params) {
1.108 paf 1049: gdImage& image=GET_SELF(r, VImage).image();
1.12 paf 1050:
1.108 paf 1051: image.Fill(
1.91 paf 1052: params.as_int(0, "x must be int", r),
1053: params.as_int(1, "y must be int", r),
1.108 paf 1054: image.Color(params.as_int(2, "color must be int", r)));
1.13 paf 1055: }
1056:
1.91 paf 1057: static void _rectangle(Request& r, MethodParams& params) {
1.108 paf 1058: gdImage& image=GET_SELF(r, VImage).image();
1.13 paf 1059:
1.108 paf 1060: image.Rectangle(
1.91 paf 1061: params.as_int(0, "x0 must be int", r),
1062: params.as_int(1, "y0 must be int", r),
1063: params.as_int(2, "x1 must be int", r),
1064: params.as_int(3, "y1 must be int", r),
1.108 paf 1065: image.Color(params.as_int(4, "color must be int", r)));
1.13 paf 1066: }
1067:
1.91 paf 1068: static void _bar(Request& r, MethodParams& params) {
1.108 paf 1069: gdImage& image=GET_SELF(r, VImage).image();
1.13 paf 1070:
1.108 paf 1071: image.FilledRectangle(
1.91 paf 1072: params.as_int(0, "x0 must be int", r),
1073: params.as_int(1, "y0 must be int", r),
1074: params.as_int(2, "x1 must be int", r),
1075: params.as_int(3, "y1 must be int", r),
1.108 paf 1076: image.Color(params.as_int(4, "color must be int", r)));
1.13 paf 1077: }
1078:
1.44 parser 1079: #ifndef DOXYGEN
1.155 moko 1080: static void add_point(Table::element_type row, gdImage::Point **p) {
1.110 paf 1081: if(row->count()!=2)
1.155 moko 1082: throw Exception(0, 0, "coordinates table must contain two columns: x and y values");
1.91 paf 1083: (**p).x=row->get(0)->as_int();
1084: (**p).y=row->get(1)->as_int();
1.44 parser 1085: (*p)++;
1086: }
1087: #endif
1.135 misha 1088: #ifndef DOXYGEN
1.155 moko 1089: static void add_point(int x, int y, gdImage::Point **p) {
1.135 misha 1090: (**p).x=x;
1091: (**p).y=y;
1092: (*p)++;
1093: }
1094: #endif
1.91 paf 1095: static void _replace(Request& r, MethodParams& params) {
1.135 misha 1096: int src_color=params.as_int(0, "src color must be int", r);
1097: int dest_color=params.as_int(1, "dest color must be int", r);
1098:
1.108 paf 1099: gdImage& image=GET_SELF(r, VImage).image();
1.13 paf 1100:
1.135 misha 1101: gdImage::Point* all_p=0;
1102: size_t count=0;
1103: if(params.count() == 3){
1.140 misha 1104: Table* table=params.as_table(2, "coordinates");
1.135 misha 1105: count=table->count();
1106: all_p=new(PointerFreeGC) gdImage::Point[count];
1107: gdImage::Point* add_p=all_p;
1108: table->for_each(add_point, &add_p);
1109: } else {
1110: int max_x=image.SX()-1;
1111: int max_y=image.SY()-1;
1112: if(max_x > 0 && max_y > 0){
1113: count=4;
1114: all_p=new(PointerFreeGC) gdImage::Point[count];
1115: gdImage::Point* add_p=all_p;
1116: add_point(0, 0, &add_p);
1117: add_point(max_x, 0, &add_p);
1118: add_point(max_x, max_y, &add_p);
1119: add_point(0, max_y, &add_p);
1120: }
1121: }
1.13 paf 1122:
1.135 misha 1123: if(count)
1124: image.FilledPolygonReplaceColor(all_p, count, image.Color(src_color), image.Color(dest_color));
1.13 paf 1125: }
1126:
1.91 paf 1127: static void _polyline(Request& r, MethodParams& params) {
1.108 paf 1128: gdImage& image=GET_SELF(r, VImage).image();
1.13 paf 1129:
1.140 misha 1130: Table* table=params.as_table(1, "coordinates");
1.44 parser 1131:
1.92 paf 1132: gdImage::Point* all_p=new(PointerFreeGC) gdImage::Point[table->count()];
1.44 parser 1133: gdImage::Point *add_p=all_p;
1134: table->for_each(add_point, &add_p);
1.108 paf 1135: image.Polygon(all_p, table->count(),
1136: image.Color(params.as_int(0, "color must be int", r)),
1.44 parser 1137: false/*not closed*/);
1138: }
1139:
1.91 paf 1140: static void _polygon(Request& r, MethodParams& params) {
1.108 paf 1141: gdImage& image=GET_SELF(r, VImage).image();
1.13 paf 1142:
1.140 misha 1143: Table* table=(Table*)params.as_table(1, "coordinates");
1.44 parser 1144:
1.92 paf 1145: gdImage::Point* all_p=new(PointerFreeGC) gdImage::Point[table->count()];
1.44 parser 1146: gdImage::Point *add_p=all_p;
1147: table->for_each(add_point, &add_p);
1.108 paf 1148: image.Polygon(all_p, table->count(),
1149: image.Color(params.as_int(0, "color must be int", r)));
1.13 paf 1150: }
1151:
1.91 paf 1152: static void _polybar(Request& r, MethodParams& params) {
1.108 paf 1153: gdImage& image=GET_SELF(r, VImage).image();
1.13 paf 1154:
1.140 misha 1155: Table* table=(Table*)params.as_table(1, "coordinates");
1.13 paf 1156:
1.92 paf 1157: gdImage::Point* all_p=new(PointerFreeGC) gdImage::Point[table->count()];
1.44 parser 1158: gdImage::Point *add_p=all_p;
1159: table->for_each(add_point, &add_p);
1.108 paf 1160: image.FilledPolygon(all_p, table->count(),
1161: image.Color(params.as_int(0, "color must be int", r)));
1.12 paf 1162: }
1163:
1.16 paf 1164: // font
1165:
1.85 paf 1166: #define Y(y)(y+index*height)
1.21 paf 1167:
1.91 paf 1168: // Font class
1169:
1.155 moko 1170: Font::Font(Charset& asource_charset, const String& aalphabet, gdImage* aifont, int aheight, int amonospace, int aspacebarspace, int aletterspacing):
1.158 moko 1171: letterspacing(aletterspacing),
1.132 misha 1172: height(aheight),
1173: monospace(amonospace),
1174: spacebarspace(aspacebarspace),
1.100 paf 1175: ifont(aifont),
1.158 moko 1176: alphabet(aalphabet),
1177: fsource_charset(asource_charset){
1.132 misha 1178:
1179: if(fsource_charset.isUTF8()){
1180: size_t index=0;
1181: for(UTF8_string_iterator i(alphabet); i.has_next(); )
1182: fletter2index.put_dont_replace(i.next(), index++);
1183: }
1.91 paf 1184: }
1185:
1186: /* ******************************** char ********************************** */
1187:
1188: size_t Font::index_of(char ch) {
1189: if(ch==' ') return STRING_NOT_FOUND;
1190: return alphabet.pos(ch);
1191: }
1192:
1.132 misha 1193: size_t Font::index_of(XMLCh ch) {
1194: if(ch==' ') return STRING_NOT_FOUND;
1195: return fletter2index.get(ch);
1196: }
1197:
1.91 paf 1198: int Font::index_width(size_t index) {
1199: if(index==STRING_NOT_FOUND)
1200: return spacebarspace;
1201: int tr=ifont->GetTransparent();
1202: for(int x=ifont->SX()-1; x>=0; x--) {
1203: for(int y=0; y<height; y++)
1204: if(ifont->GetPixel(x, Y(y))!=tr)
1205: return x+1;
1.16 paf 1206: }
1.91 paf 1207: return 0;
1208: }
1209:
1.108 paf 1210: void Font::index_display(gdImage& image, int x, int y, size_t index){
1.91 paf 1211: if(index!=STRING_NOT_FOUND)
1.108 paf 1212: ifont->Copy(image, x, y, 0, Y(0), index_width(index), height);
1.91 paf 1213: }
1214:
1215: /* ******************************** string ********************************** */
1216:
1217: int Font::step_width(int index) {
1.125 misha 1218: return letterspacing + (monospace ? monospace : index_width(index));
1.91 paf 1219: }
1220:
1221: // counts trailing letter_spacing, consider this OK. useful for contiuations
1222: int Font::string_width(const String& s){
1223: const char* cstr=s.cstr();
1224: int result=0;
1.132 misha 1225:
1226: if(fsource_charset.isUTF8()){
1227: for(UTF8_string_iterator i(s); i.has_next(); )
1228: result+=step_width(index_of(i.next()));
1229: } else {
1230: for(const char* current=cstr; *current; current++)
1231: result+=step_width(index_of(*current));
1232: }
1233:
1.91 paf 1234: return result;
1235: }
1236:
1.108 paf 1237: void Font::string_display(gdImage& image, int x, int y, const String& s){
1.91 paf 1238: const char* cstr=s.cstr();
1.132 misha 1239:
1240: if(fsource_charset.isUTF8()){
1241: for(UTF8_string_iterator i(s); i.has_next(); ){
1242: size_t index=index_of(i.next());
1243: index_display(image, x, y, index);
1244: x+=step_width(index);
1245: }
1246: } else {
1247: for(const char* current=cstr; *current; current++) {
1248: size_t index=index_of(*current);
1249: index_display(image, x, y, index);
1250: x+=step_width(index);
1251: }
1.87 paf 1252: }
1.91 paf 1253: }
1.87 paf 1254:
1.91 paf 1255: //
1.35 parser 1256:
1.16 paf 1257:
1.91 paf 1258: static void _font(Request& r, MethodParams& params) {
1259: const String& alphabet=params.as_string(0, "alphabet must not be code");
1.131 misha 1260: size_t alphabet_length=alphabet.length(r.charsets.source());
1261: if(!alphabet_length)
1.155 moko 1262: throw Exception(PARSER_RUNTIME, 0, "alphabet must not be empty");
1.84 paf 1263:
1.125 misha 1264: gdImage* image=load(r, params.as_string(1, FILE_NAME_MUST_NOT_BE_CODE));
1265:
1.126 misha 1266: int spacebar_width=image->SX();
1.125 misha 1267: int monospace_width=0; // proportional
1268: int letter_spacing=1;
1269: if(params.count()>2){
1.144 moko 1270: if(HashStringValue* options=params[2].get_hash()){
1.125 misha 1271: // third option is hash
1272: if(params.count()>3)
1.144 moko 1273: throw Exception(PARSER_RUNTIME, 0, "too many params were specified");
1.125 misha 1274: int valid_options=0;
1275: if(Value* vspacebar_width=options->get(spacebar_width_name)){
1276: valid_options++;
1.153 moko 1277: spacebar_width=r.process(*vspacebar_width).as_int();
1.125 misha 1278: }
1279: if(Value* vmonospace_width=options->get(monospace_width_name)){
1280: valid_options++;
1.153 moko 1281: monospace_width=r.process(*vmonospace_width).as_int();
1.125 misha 1282: if(!monospace_width)
1283: monospace_width=image->SX();
1284: }
1285: if(Value* vletter_spacing=options->get(letter_spacing_name)){
1286: valid_options++;
1.153 moko 1287: letter_spacing=r.process(*vletter_spacing).as_int();
1.125 misha 1288: }
1289: if(valid_options!=options->count())
1.134 misha 1290: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.125 misha 1291: } else {
1292: // backward
1.144 moko 1293: spacebar_width=params.as_int(2, "param must be int or hash", r);
1.125 misha 1294: if(params.count()>3) {
1295: monospace_width=params.as_int(3, "monospace_width must be int", r);
1296: if(!monospace_width)
1297: monospace_width=image->SX();
1298: }
1299: }
1300: }
1301:
1.131 misha 1302: if(int remainder=image->SY() % alphabet_length)
1.155 moko 1303: throw Exception(PARSER_RUNTIME, 0, "font-file height(%d) not divisable by alphabet size(%d), remainder=%d", image->SY(), alphabet_length, remainder);
1.37 parser 1304:
1.155 moko 1305: GET_SELF(r, VImage).set_font(new Font(r.charsets.source(), alphabet, image, image->SY() / alphabet_length, monospace_width, spacebar_width, letter_spacing));
1.16 paf 1306: }
1307:
1.91 paf 1308: static void _text(Request& r, MethodParams& params) {
1309: int x=params.as_int(0, "x must be int", r);
1310: int y=params.as_int(1, "y must be int", r);
1311: const String& s=params.as_string(2, "text must not be code");
1.16 paf 1312:
1.91 paf 1313: VImage& vimage=GET_SELF(r, VImage);
1.108 paf 1314: vimage.font().string_display(vimage.image(), x, y, s);
1.16 paf 1315: }
1316:
1.91 paf 1317: static void _length(Request& r, MethodParams& params) {
1318: const String& s=params.as_string(0, "text must not be code");
1.47 parser 1319:
1.91 paf 1320: VImage& vimage=GET_SELF(r, VImage);
1.157 moko 1321: r.write(*new VInt(vimage.font().string_width(s)));
1.47 parser 1322: }
1323:
1.91 paf 1324: static void _arc(Request& r, MethodParams& params) {
1.108 paf 1325: gdImage& image=GET_SELF(r, VImage).image();
1.48 parser 1326:
1.108 paf 1327: image.Arc(
1.91 paf 1328: params.as_int(0, "center_x must be int", r),
1329: params.as_int(1, "center_y must be int", r),
1330: params.as_int(2, "width must be int", r),
1331: params.as_int(3, "height must be int", r),
1332: params.as_int(4, "start degrees must be int", r),
1333: params.as_int(5, "end degrees must be int", r),
1.108 paf 1334: image.Color(params.as_int(6, "cx must be int", r)));
1.48 parser 1335: }
1336:
1.91 paf 1337: static void _sector(Request& r, MethodParams& params) {
1.108 paf 1338: gdImage& image=GET_SELF(r, VImage).image();
1.49 parser 1339:
1.108 paf 1340: image.Sector(
1.91 paf 1341: params.as_int(0, "center_x must be int", r),
1342: params.as_int(1, "center_y must be int", r),
1343: params.as_int(2, "width must be int", r),
1344: params.as_int(3, "height must be int", r),
1345: params.as_int(4, "start degrees must be int", r),
1346: params.as_int(5, "end degrees must be int", r),
1.108 paf 1347: image.Color(params.as_int(6, "color must be int", r)));
1.49 parser 1348: }
1349:
1.91 paf 1350: static void _circle(Request& r, MethodParams& params) {
1.108 paf 1351: gdImage& image=GET_SELF(r, VImage).image();
1.48 parser 1352:
1.91 paf 1353: int size=params.as_int(2, "radius must be int", r)*2;
1.108 paf 1354: image.Arc(
1.91 paf 1355: params.as_int(0, "center_x must be int", r),
1356: params.as_int(1, "center_y must be int", r),
1.50 parser 1357: size, //w
1358: size, //h
1.48 parser 1359: 0, //s
1360: 360, //e
1.108 paf 1361: image.Color(params.as_int(3, "color must be int", r)));
1.48 parser 1362: }
1363:
1.108 paf 1364: gdImage& as_image(MethodParams& params, int index, const char* msg) {
1.91 paf 1365: Value& value=params.as_no_junction(index, msg);
1.53 parser 1366:
1.130 misha 1367: if(Value* vimage=value.as(VIMAGE_TYPE)) {
1.108 paf 1368: return static_cast<VImage *>(vimage)->image();
1.75 paf 1369: } else
1.155 moko 1370: throw Exception(PARSER_RUNTIME, 0, msg);
1.53 parser 1371: }
1372:
1.91 paf 1373: static void _copy(Request& r, MethodParams& params) {
1.108 paf 1374: gdImage& dest=GET_SELF(r, VImage).image();
1.53 parser 1375:
1.108 paf 1376: gdImage& src=as_image(params, 0, "src must be image");
1.53 parser 1377:
1.91 paf 1378: int sx=params.as_int(1, "src_x must be int", r);
1379: int sy=params.as_int(2, "src_y must be int", r);
1380: int sw=params.as_int(3, "src_w must be int", r);
1381: int sh=params.as_int(4, "src_h must be int", r);
1382: int dx=params.as_int(5, "dest_x must be int", r);
1383: int dy=params.as_int(6, "dest_y must be int", r);
1384: if(params.count()>1+2+2+2) {
1385: int dw=params.as_int(1+2+2+2, "dest_w must be int", r);
1386: int dh=(int)(params.count()>1+2+2+2+1?
1387: params.as_int(1+2+2+2+1, "dest_h must be int", r):sh*(((double)dw)/((double)sw)));
1388: int tolerance=params.count()>1+2+2+2+2?
1389: params.as_int(1+2+2+2+2, "tolerance must be int", r):150;
1.53 parser 1390:
1.108 paf 1391: src.CopyResampled(dest, dx, dy, sx, sy, dw, dh, sw, sh, tolerance);
1.53 parser 1392: } else
1.108 paf 1393: src.Copy(dest, dx, dy, sx, sy, sw, sh);
1394: }
1395:
1396: static void _pixel(Request& r, MethodParams& params) {
1397: gdImage& image=GET_SELF(r, VImage).image();
1398:
1.109 paf 1399: int x=params.as_int(0, "x must be int", r);
1400: int y=params.as_int(1, "y must be int", r);
1401:
1402: if(params.count()>2) {
1403: image.SetPixel(x, y,
1404: image.Color(params.as_int(2, "color must be int", r)));
1405: } else
1.157 moko 1406: r.write(*new VInt(image.DecodeColor(image.GetPixel(x, y))));
1.53 parser 1407: }
1408:
1409:
1.22 paf 1410: // constructor
1411:
1.91 paf 1412: MImage::MImage(): Methoded("image") {
1.1 paf 1413: // ^image:measure[DATA]
1.163 moko 1414: // ^image:measure[DATA; $.exif(false) $.xmp(false) $.xmp-charset[UTF-8] ]
1415: add_native_method("measure", Method::CT_DYNAMIC, _measure, 1, 2);
1.3 paf 1416:
1.25 paf 1417: // ^image.html[]
1418: // ^image.html[hash]
1.22 paf 1419: add_native_method("html", Method::CT_DYNAMIC, _html, 0, 1);
1.6 paf 1420:
1.25 paf 1421: // ^image.load[background.gif]
1.22 paf 1422: add_native_method("load", Method::CT_DYNAMIC, _load, 1, 1);
1.6 paf 1423:
1.25 paf 1424: // ^image.create[width;height] bgcolor=white
1425: // ^image.create[width;height;bgcolor]
1.22 paf 1426: add_native_method("create", Method::CT_DYNAMIC, _create, 2, 3);
1.6 paf 1427:
1.25 paf 1428: // ^image.gif[]
1.95 paf 1429: add_native_method("gif", Method::CT_DYNAMIC, _gif, 0, 1);
1.12 paf 1430:
1.25 paf 1431: // ^image.line(x0;y0;x1;y1;color)
1.22 paf 1432: add_native_method("line", Method::CT_DYNAMIC, _line, 5, 5);
1.13 paf 1433:
1.25 paf 1434: // ^image.fill(x;y;color)
1.22 paf 1435: add_native_method("fill", Method::CT_DYNAMIC, _fill, 3, 3);
1.13 paf 1436:
1.25 paf 1437: // ^image.rectangle(x0;y0;x1;y1;color)
1.22 paf 1438: add_native_method("rectangle", Method::CT_DYNAMIC, _rectangle, 5, 5);
1.13 paf 1439:
1.25 paf 1440: // ^image.bar(x0;y0;x1;y1;color)
1.22 paf 1441: add_native_method("bar", Method::CT_DYNAMIC, _bar, 5, 5);
1.13 paf 1442:
1.44 parser 1443: // ^image.replace(color-source;color-dest)[table x:y]
1.135 misha 1444: // ^image.replace(color-source;color-dest)
1445: add_native_method("replace", Method::CT_DYNAMIC, _replace, 2, 3);
1.44 parser 1446:
1447: // ^image.polyline(color)[table x:y]
1448: add_native_method("polyline", Method::CT_DYNAMIC, _polyline, 2, 2);
1.13 paf 1449:
1.44 parser 1450: // ^image.polygon(color)[table x:y]
1451: add_native_method("polygon", Method::CT_DYNAMIC, _polygon, 2, 2);
1.13 paf 1452:
1.44 parser 1453: // ^image.polybar(color)[table x:y]
1454: add_native_method("polybar", Method::CT_DYNAMIC, _polybar, 2, 2);
1.13 paf 1455:
1.125 misha 1456: // ^image.font[alPHAbet;font-file-name.gif]
1457: // ^image.font[alPHAbet;font-file-name.gif](spacebar_width)
1458: // ^image.font[alPHAbet;font-file-name.gif](spacebar_width;letter_width)
1459: // ^image.font[alPHAbet;font-file-name.gif][$.space-width(.) $.letter-width(.) $.letter-space(.)]
1460: add_native_method("font", Method::CT_DYNAMIC, _font, 2, 4);
1.16 paf 1461:
1.125 misha 1462: // ^image.text(x;y)[text]
1.22 paf 1463: add_native_method("text", Method::CT_DYNAMIC, _text, 3, 3);
1.47 parser 1464:
1.125 misha 1465: // ^image.length[text]
1.47 parser 1466: add_native_method("length", Method::CT_DYNAMIC, _length, 1, 1);
1.16 paf 1467:
1.48 parser 1468: // ^image.arc(center x;center y;width;height;start in degrees;end in degrees;color)
1469: add_native_method("arc", Method::CT_DYNAMIC, _arc, 7, 7);
1.49 parser 1470:
1471: // ^image.sector(center x;center y;width;height;start in degrees;end in degrees;color)
1472: add_native_method("sector", Method::CT_DYNAMIC, _sector, 7, 7);
1.48 parser 1473:
1474: // ^image.circle(center x;center y;r;color)
1475: add_native_method("circle", Method::CT_DYNAMIC, _circle, 4, 4);
1476:
1.56 parser 1477: // ^image.copy[source](src x;src y;src w;src h;dst x;dst y[;dest w[;dest h[;tolerance]]])
1478: add_native_method("copy", Method::CT_DYNAMIC, _copy, 1+2+2+2, (1+2+2+2)+2+1);
1.108 paf 1479:
1480: // ^image.pixel(x;y)[(color)]
1.109 paf 1481: add_native_method("pixel", Method::CT_DYNAMIC, _pixel, 2, 3);
1.1 paf 1482: }
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