Annotation of parser3/src/classes/image.C, revision 1.168
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:
1.168 ! moko 29: volatile const char * IDENT_IMAGE_C="$Id: image.C,v 1.167 2020/11/10 22:42:24 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:
231: #undef EXIF_TAG
1.91 paf 232:
1.43 parser 233: #ifndef DOXYGEN
1.1 paf 234: class Measure_reader {
235: public:
1.91 paf 236: virtual size_t read(const char* &buf, size_t limit)=0;
1.79 paf 237: virtual void seek(long value, int whence)=0;
238: virtual long tell()=0;
1.77 paf 239: };
1.1 paf 240:
1.77 paf 241: class Measure_file_reader: public Measure_reader {
1.152 moko 242: const String& file_name;
1.91 paf 243: int f;
244:
1.77 paf 245: public:
1.152 moko 246: Measure_file_reader(int af, const String& afile_name):
247: file_name(afile_name), f(af) {
1.1 paf 248: }
249:
1.91 paf 250: override size_t read(const char* &abuf, size_t limit) {
1.77 paf 251: if(limit==0)
1.1 paf 252: return 0;
1.77 paf 253:
1.91 paf 254: char* lbuf=new(PointerFreeGC) char[limit];
1.143 moko 255: ssize_t read_size=::read(f, lbuf, limit); abuf=lbuf;
256: if(read_size<0)
257: throw Exception(0, &file_name, "measure read failed: %s (%d)", strerror(errno), errno);
1.1 paf 258: return read_size;
259: }
260:
1.91 paf 261: override void seek(long value, int whence) {
1.79 paf 262: if(lseek(f, value, whence)<0)
1.152 moko 263: throw Exception(IMAGE_FORMAT, &file_name, "seek(value=%ld, whence=%d) failed: %s (%d)", value, whence, strerror(errno), errno);
1.77 paf 264: }
265:
1.91 paf 266: override long tell() { return lseek(f, 0, SEEK_CUR); }
1.79 paf 267:
1.77 paf 268: };
269:
270: class Measure_buf_reader: public Measure_reader {
1.91 paf 271:
272: const char* buf; size_t size;
273: const String& file_name;
274:
275: size_t offset;
276:
1.77 paf 277: public:
1.91 paf 278: Measure_buf_reader(const char* abuf, size_t asize, const String& afile_name):
1.77 paf 279: buf(abuf), size(asize), file_name(afile_name), offset(0) {
280: }
281:
1.91 paf 282: override size_t read(const char* &abuf, size_t limit) {
1.77 paf 283: size_t to_read=min(limit, size-offset);
1.91 paf 284: abuf=buf+offset;
1.77 paf 285: offset+=to_read;
286: return to_read;
287: }
288:
1.91 paf 289: override void seek(long value, int whence) {
1.79 paf 290: size_t new_offset;
291: switch(whence) {
292: case SEEK_CUR: new_offset=offset+value; break;
293: case SEEK_SET: new_offset=(size_t)value; break;
1.164 moko 294: case SEEK_END: new_offset=size; break;
1.91 paf 295: default:
1.155 moko 296: throw Exception(0, 0, "whence #%d not supported", 0, whence);
1.91 paf 297: break; // never
1.79 paf 298: }
299:
1.77 paf 300: if((ssize_t)new_offset<0 || new_offset>size)
1.155 moko 301: 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 302: value, whence, new_offset, size);
1.77 paf 303: offset=new_offset;
304: }
305:
1.91 paf 306: override long tell() { return offset; }
1.79 paf 307:
1.1 paf 308: };
1.77 paf 309:
1.43 parser 310: #endif
1.1 paf 311:
1.72 paf 312: /// PNG file header
313: struct PNG_Header {
1.164 moko 314: char dummy[12];
315: char signature[4]; //< must be "IHDR"
316: uchar high_width[2]; //< image width high bytes [we ignore for now]
317: uchar width[2]; //< image width low bytes
318: uchar high_height[2]; //< image height high bytes [we ignore for now]
319: uchar height[4]; //< image height
1.72 paf 320: };
321:
1.21 paf 322: /// GIF file header
1.1 paf 323: struct GIF_Header {
1.164 moko 324: char signature[3]; // 'GIF'
325: char version[3];
326: uchar width[2];
327: uchar height[2];
328: char dif;
329: char fonColor;
330: char nulls;
331: };
332:
333: /// BMP file header + DIB header part
334: struct BMP_Header {
335: char signature[2]; // 'BM'
336: uchar file_size[4];
337: uchar reserved[4];
338: uchar bitmap_offset[4];
339: uchar header_size[4];
340: uchar width[2];
341: uchar high_width[2]; //< image width high bytes [we ignore for now]
342: uchar height[2];
343: uchar high_height[2]; //< image height high bytes [we ignore for now]
1.1 paf 344: };
345:
1.31 parser 346: /// JPEG record head
347: struct JPG_Segment_head {
1.80 paf 348: uchar marker;
349: uchar code;
350: uchar length[2];
1.1 paf 351: };
1.21 paf 352: /// JPEG frame header
1.31 parser 353: struct JPG_Size_segment_body {
1.164 moko 354: char data; //< data precision of bits/sample
355: uchar height[2]; //< image height
356: uchar width[2]; //< image width
357: char numComponents; //< number of color components
1.1 paf 358: };
359:
1.80 paf 360: /// JPEG Exif TIFF Header
361: struct JPG_Exif_TIFF_header {
1.165 moko 362: char byte_align_identifier[2];
363: uchar signature[2]; // always 000A [or 0A00]
1.80 paf 364: uchar first_IFD_offset[4]; // Usually the first IFD starts immediately next to TIFF header, so this offset has value '0x00000008'.
365: };
366:
367: // JPEG Exif IFD start
1.91 paf 368: struct JPG_Exif_IFD_begin {
1.80 paf 369: uchar directory_entry_count[2]; // the number of directory entry contains in this IFD
370: };
371:
372: // TTTT ffff NNNNNNNN DDDDDDDD
373: struct JPG_Exif_IFD_entry {
374: uchar tag[2]; // Tag number, this shows a kind of data
375: uchar format[2]; // data format
376: uchar components_count[4]; // number of components
377: uchar value_or_offset_to_it[4]; // data value or offset to data value
378: };
379:
380: #define JPG_IFD_TAG_EXIF_OFFSET 0x8769
381:
1.118 misha 382: #define JPG_IFD_TAG_EXIF_GPS_OFFSET 0x8825
383:
1.89 paf 384: #define JPEG_EXIF_DATE_CHARS 20
385:
1.168 ! moko 386: /// WEBP file header
! 387: struct WEBP_Header {
! 388: char signature_riff[4]; // 'RIFF'
! 389: uchar file_size[4];
! 390: char signature[4]; // 'WEBP'
! 391: char format[4]; // 'VP8 ' or 'VP8L' or 'VP8X'
! 392: };
! 393:
! 394: struct WEBP_VP8_Chunk {
! 395: uchar size[4];
! 396: char tag[3];
! 397: uchar signature[3]; // 0x9D 0x01 0x2A
! 398: uchar width[2]; // 14 bits each
! 399: uchar height[2]; // 14 bits each
! 400: };
! 401:
! 402: struct WEBP_VP8L_Chunk {
! 403: uchar size[4];
! 404: char signature; // 0x2F
! 405: uchar width_height[4]; // 14 bits each
! 406: };
! 407:
! 408: struct WEBP_X_Chunk {
! 409: uchar size[4];
! 410: char reserved[4];
! 411: uchar width[3];
! 412: uchar height[3];
! 413: };
1.162 moko 414:
415: #ifndef DOXYGEN
416: struct Measure_info {
417: ushort width;
418: ushort height;
419: Value** exif;
420: Value** xmp;
1.163 moko 421: Charset* xmp_charset;
1.162 moko 422: };
423: #endif
424:
1.1 paf 425: //
426:
1.80 paf 427: inline ushort x_endian_to_ushort(uchar b0, uchar b1) {
428: return (ushort)((b1<<8) + b0);
1.33 parser 429: }
430:
1.80 paf 431: inline uint x_endian_to_uint(uchar b0, uchar b1, uchar b2, uchar b3) {
432: return (uint)(((((b3<<8) + b2)<<8)+b1)<<8)+b0;
1.33 parser 433: }
434:
1.80 paf 435: inline ushort endian_to_ushort(bool is_big, const uchar *b/* [2] */) {
1.168 ! moko 436: return is_big ? x_endian_to_ushort(b[1], b[0]) : x_endian_to_ushort(b[0], b[1]);
1.1 paf 437: }
438:
1.80 paf 439: inline uint endian_to_uint(bool is_big, const uchar *b /* [4] */) {
1.168 ! moko 440: 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]);
1.80 paf 441: }
442:
1.155 moko 443: static Value* parse_IFD_entry_formatted_one_value(bool is_big, ushort format, size_t component_size, const uchar *value) {
1.80 paf 444: switch(format) {
445: case 1: // unsigned byte
1.91 paf 446: return new VInt((uchar)value[0]);
1.80 paf 447: case 3: // unsigned short
1.91 paf 448: return new VInt(endian_to_ushort(is_big, value));
1.80 paf 449: case 4: // unsigned long
450: // 'double' because parser's Int is signed
1.91 paf 451: return new VDouble(endian_to_uint(is_big, value));
1.80 paf 452: case 5: // unsigned rational
453: {
454: uint numerator=endian_to_uint(is_big, value); value+=component_size/2;
455: uint denominator=endian_to_uint(is_big, value);
456: if(!denominator)
457: return 0;
1.91 paf 458: return new VDouble(((double)numerator)/denominator);
1.80 paf 459: }
460: case 6: // signed byte
1.91 paf 461: return new VInt((signed char)value[0]);
1.80 paf 462: case 8: // signed short
1.91 paf 463: return new VInt((signed short)endian_to_ushort(is_big, value));
1.80 paf 464: case 9: // signed long
1.91 paf 465: return new VInt((signed int)endian_to_uint(is_big, value));
1.80 paf 466: case 10: // signed rational
467: {
468: signed int numerator=(signed int)endian_to_uint(is_big, value); value+=component_size/2;
469: uint denominator=endian_to_uint(is_big, value);
470: if(!denominator)
471: return 0;
1.91 paf 472: return new VDouble(numerator/denominator);
1.80 paf 473: }
474: /*
475: case 11: // single float
1.120 misha 476: @todo
1.80 paf 477: case 12: // double float
1.120 misha 478: @todo
1.80 paf 479: */
480: };
481:
482: return 0;
483: }
484:
1.89 paf 485: // date.C
1.147 moko 486: tm cstr_to_time_t(char *, const char **);
1.89 paf 487:
1.155 moko 488: 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 489: if(format==2) { // ascii string, exception: the only type with varying size
1.91 paf 490: const char* cstr=(const char* )value;
491: size_t length=components_count;
1.89 paf 492: // Data format is "YYYY:MM:DD HH:MM:SS"+0x00, total 20bytes
1.155 moko 493: if(length==JPEG_EXIF_DATE_CHARS && isdigit((unsigned char)cstr[0]) && cstr[length-1]==0) {
494: char cstr_writable[JPEG_EXIF_DATE_CHARS];
1.89 paf 495: strcpy(cstr_writable, cstr);
496:
1.106 paf 497: try {
1.147 moko 498: tm tmIn=cstr_to_time_t(cstr_writable, 0);
1.146 moko 499: return new VDate(tmIn);
1.106 paf 500: }
501: catch(...) { /*ignore bad date times*/ }
1.89 paf 502: }
503:
1.123 misha 504: return new VString(*new String(cstr, String::L_TAINTED));
1.80 paf 505: }
506:
507: if(components_count==1)
1.91 paf 508: return parse_IFD_entry_formatted_one_value(is_big, format, component_size, value);
1.80 paf 509:
1.91 paf 510: VHash* result=new VHash;
511: HashStringValue& hash=result->hash();
1.80 paf 512: for(uint i=0; i<components_count; i++, value+=component_size) {
1.91 paf 513: hash.put(
1.93 paf 514: String::Body::Format(i),
1.91 paf 515: parse_IFD_entry_formatted_one_value(is_big, format, component_size, value));
1.80 paf 516: }
517:
1.91 paf 518: return result;
1.80 paf 519: }
520:
1.155 moko 521: static Value* parse_IFD_entry_value(bool is_big, Measure_reader& reader, long tiff_base, JPG_Exif_IFD_entry& entry) {
1.80 paf 522: size_t format2component_size[]={
523: 0, // undefined
524: 1, // unsigned byte
525: 1, // ascii string
526: 2, // unsigned short
527: 4, // unsigned long
528: 8, // unsigned rational
529: 1, // signed byte
530: 0, // undefined
531: 2, // signed short
532: 4, // signed long
533: 8, // signed rational
534: /*
535: 4, // single float
536: 8, // double float
537: */
538: };
539:
540: ushort format=endian_to_ushort(is_big, entry.format);
541: if(format>=sizeof(format2component_size)/sizeof(format2component_size[0]))
542: return 0; // format out of range, ignoring
543:
544: size_t component_size=format2component_size[format];
545: if(component_size==0)
546: return 0; // undefined format
547:
548: // You can get the total data byte length by multiplies
549: // a 'bytes/components' value (see above chart) by number of components stored 'NNNNNNNN' area
550: uint components_count=endian_to_uint(is_big, entry.components_count);
1.121 misha 551: uint value_size=component_size*components_count;
1.80 paf 552: // If its size is over 4bytes, 'DDDDDDDD' contains the offset to data stored address
1.91 paf 553: Value* result;
1.80 paf 554:
555: if(value_size<=4)
1.155 moko 556: result=parse_IFD_entry_formatted_value(is_big, format, component_size, components_count, entry.value_or_offset_to_it);
1.80 paf 557: else {
558: long remembered=reader.tell();
559: {
560: reader.seek(tiff_base+endian_to_uint(is_big, entry.value_or_offset_to_it), SEEK_SET);
1.91 paf 561: const char* value;
1.156 moko 562: if(reader.read(value, value_size)<value_size)
1.80 paf 563: return 0;
1.155 moko 564: result=parse_IFD_entry_formatted_value(is_big, format, component_size, components_count, (const uchar*)value);
1.80 paf 565: }
566: reader.seek(remembered, SEEK_SET);
567: }
568:
569: return result;
570: }
571:
1.155 moko 572: static void parse_IFD(HashStringValue& hash, bool is_big, Measure_reader& reader, long tiff_base, bool gps=false);
1.91 paf 573:
1.155 moko 574: 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 575: ushort tag=endian_to_ushort(is_big, entry.tag);
1.118 misha 576:
577: if(tag==JPG_IFD_TAG_EXIF_OFFSET || tag==JPG_IFD_TAG_EXIF_GPS_OFFSET){
1.80 paf 578: long remembered=reader.tell();
579: {
580: reader.seek(tiff_base+endian_to_uint(is_big, entry.value_or_offset_to_it), SEEK_SET);
1.118 misha 581: parse_IFD(hash, is_big, reader, tiff_base, (tag==JPG_IFD_TAG_EXIF_GPS_OFFSET)?true:gps);
1.80 paf 582: }
583: reader.seek(remembered, SEEK_SET);
584: return;
585: }
1.118 misha 586:
1.91 paf 587: if(Value* value=parse_IFD_entry_value(is_big, reader, tiff_base, entry)) {
1.118 misha 588: if(const char* name=(gps)?exif_gps_tag_value2name.get(tag):exif_tag_value2name.get(tag))
1.148 moko 589: hash.put(name, value);
1.80 paf 590: else
1.93 paf 591: hash.put(String::Body::Format(tag), value);
1.80 paf 592: }
1.1 paf 593: }
594:
1.155 moko 595: static void parse_IFD(HashStringValue& hash, bool is_big, Measure_reader& reader, long tiff_base, bool gps) {
1.91 paf 596: const char* buf;
597: if(reader.read(buf, sizeof(JPG_Exif_IFD_begin))<sizeof(JPG_Exif_IFD_begin))
1.80 paf 598: return;
1.91 paf 599: JPG_Exif_IFD_begin *start=(JPG_Exif_IFD_begin *)buf;
1.80 paf 600:
601: ushort directory_entry_count=endian_to_ushort(is_big, start->directory_entry_count);
602: for(int i=0; i<directory_entry_count; i++) {
603: if(reader.read(buf, sizeof(JPG_Exif_IFD_entry))<sizeof(JPG_Exif_IFD_entry))
604: return;
605:
1.118 misha 606: parse_IFD_entry(hash, is_big, reader, tiff_base, *(JPG_Exif_IFD_entry *)buf, gps);
1.80 paf 607: }
608: // then goes: LLLLLLLL Offset to next IFD [not going there]
609: }
610:
1.162 moko 611: static Value* parse_exif(Measure_reader& reader) {
1.91 paf 612: const char* buf;
1.80 paf 613:
614: uint tiff_base=reader.tell();
615: if(reader.read(buf, sizeof(JPG_Exif_TIFF_header))<sizeof(JPG_Exif_TIFF_header))
616: return 0;
617:
618: JPG_Exif_TIFF_header *head=(JPG_Exif_TIFF_header *)buf;
619: bool is_big=head->byte_align_identifier[0]=='M'; // [M]otorola vs [I]ntel
620:
621: uint first_IFD_offset=endian_to_uint(is_big, head->first_IFD_offset);
622: reader.seek(tiff_base+first_IFD_offset, SEEK_SET);
623:
1.91 paf 624: VHash* vhash=new VHash;
1.80 paf 625:
626: // IFD
1.91 paf 627: parse_IFD(vhash->hash(), is_big, reader, tiff_base);
1.80 paf 628:
1.91 paf 629: return vhash;
1.80 paf 630: }
631:
1.163 moko 632: static Value* parse_xmp(Measure_reader& reader, ushort xmp_length, Measure_info &info) {
1.162 moko 633: const char* buf;
634: if(reader.read(buf, xmp_length)<xmp_length)
635: return 0;
1.163 moko 636:
637: String::C xmp = Charset::transcode(String::C(pa_strdup(buf, xmp_length), xmp_length), *info.xmp_charset, pa_thread_request().charsets.source());
638: return new VString(*new String(xmp, String::L_TAINTED));
1.162 moko 639: }
640:
641: static void measure_jpeg(const String& origin_string, Measure_reader& reader, Measure_info &info) {
1.2 paf 642: // JFIF format markers
1.80 paf 643: const uchar MARKER=0xFF;
644: const uchar CODE_SIZE_A=0xC0;
645: const uchar CODE_SIZE_B=0xC1;
646: const uchar CODE_SIZE_C=0xC2;
647: const uchar CODE_SIZE_D=0xC3;
1.162 moko 648: const uchar CODE_APP1=0xE1;
1.2 paf 649:
1.91 paf 650: const char* buf;
1.18 paf 651: const size_t prefix_size=2;
1.31 parser 652: if(reader.read(buf, prefix_size)<prefix_size)
1.155 moko 653: throw Exception(IMAGE_FORMAT, &origin_string, "not JPEG file - too small");
1.80 paf 654: uchar *signature=(uchar *)buf;
1.1 paf 655:
1.31 parser 656: if(!(signature[0]==0xFF && signature[1]==0xD8))
1.155 moko 657: throw Exception(IMAGE_FORMAT, &origin_string, "not JPEG file - wrong signature");
1.31 parser 658:
659: while(true) {
1.80 paf 660: uint segment_base=reader.tell()+2/*marker,code*/;
1.31 parser 661: if(reader.read(buf, sizeof(JPG_Segment_head))<sizeof(JPG_Segment_head))
1.79 paf 662: break;
1.31 parser 663: JPG_Segment_head *head=(JPG_Segment_head *)buf;
664:
1.162 moko 665: // Verify that it's a valid segment.
1.31 parser 666: if(head->marker!=MARKER)
1.155 moko 667: throw Exception(IMAGE_FORMAT, &origin_string, "not JPEG file - marker not found");
1.79 paf 668:
1.162 moko 669: ushort segment_length=endian_to_ushort(true, head->length);
670:
1.79 paf 671: switch(head->code) {
1.162 moko 672: // http://dev.exiv2.org/projects/exiv2/wiki/The_Metadata_in_JPEG_files
673: case CODE_APP1:
674: {
675: const size_t EXIF_SIG_LEN=6; // Exif\0\0
676: const size_t XMP_SIG_LEN=29; // http://ns.adobe.com/xap/1.0/\0
677:
678: if(segment_length<EXIF_SIG_LEN+2 || reader.read(buf, EXIF_SIG_LEN)<EXIF_SIG_LEN)
679: break;
680: if(memcmp(buf, "Exif\0\0", EXIF_SIG_LEN)==0){
681: if(info.exif && !*info.exif) // backward compatibility: using first segment
682: *info.exif=parse_exif(reader);
683: break;
684: }
685:
686: if(memcmp(buf, "http:/", EXIF_SIG_LEN))
687: break;
688: if(segment_length<XMP_SIG_LEN+2 || reader.read(buf, XMP_SIG_LEN-EXIF_SIG_LEN)<XMP_SIG_LEN-EXIF_SIG_LEN)
689: break;
690: if(memcmp(buf, "/ns.adobe.com/xap/1.0/\0", XMP_SIG_LEN-EXIF_SIG_LEN)==0){
691: if(info.xmp && !*info.xmp) // backward compatibility: using first segment
1.163 moko 692: *info.xmp=parse_xmp(reader, segment_length - XMP_SIG_LEN - 2 /* segment_length */, info);
1.162 moko 693: }
694:
695: }
1.1 paf 696: break;
1.31 parser 697:
1.79 paf 698: case CODE_SIZE_A:
699: case CODE_SIZE_B:
700: case CODE_SIZE_C:
701: case CODE_SIZE_D:
702: {
703: // Segments that contain size info
704: if(reader.read(buf, sizeof(JPG_Size_segment_body))<sizeof(JPG_Size_segment_body))
1.155 moko 705: throw Exception(IMAGE_FORMAT, &origin_string, "not JPEG file - can not fully read Size segment");
1.79 paf 706: JPG_Size_segment_body *body=(JPG_Size_segment_body *)buf;
707:
1.162 moko 708: info.width=endian_to_ushort(true, body->width);
709: info.height=endian_to_ushort(true, body->height);
710: }
1.80 paf 711: return;
1.79 paf 712: };
713:
1.162 moko 714: reader.seek(segment_base + segment_length, SEEK_SET);
1.31 parser 715: }
716:
1.155 moko 717: throw Exception(IMAGE_FORMAT, &origin_string, "broken JPEG file - size frame not found");
1.1 paf 718: }
719:
1.165 moko 720: static bool parse_tiff_IFD(bool is_big, Measure_reader& reader, Measure_info &info) {
721: const char* buf;
722: if(reader.read(buf, sizeof(JPG_Exif_IFD_begin))<sizeof(JPG_Exif_IFD_begin))
723: return false;
724: JPG_Exif_IFD_begin *start=(JPG_Exif_IFD_begin *)buf;
725:
726: ushort directory_entry_count=endian_to_ushort(is_big, start->directory_entry_count);
727: for(int i=0; i<directory_entry_count; i++) {
728: if(reader.read(buf, sizeof(JPG_Exif_IFD_entry))<sizeof(JPG_Exif_IFD_entry))
729: return false;
730:
731: JPG_Exif_IFD_entry *entry=(JPG_Exif_IFD_entry *)buf;
732: ushort entry_tag=endian_to_ushort(is_big, entry->tag);
733:
734: if(entry_tag == 256 || entry_tag == 257){
735: ushort entry_format=endian_to_ushort(is_big, entry->format);
736: if(entry_format != 3 && entry_format != 4 || endian_to_uint(is_big, entry->components_count) != 1)
737: return false;
738: 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);
739: (entry_tag == 256) ? info.width=value : info.height=value;
740: if(info.width && info.height)
741: return true;
742: }
743: }
744:
745: return false;
746: // then goes: LLLLLLLL Offset to next IFD [not going there]
747: }
748:
749: static void measure_tiff(const String& origin_string, Measure_reader& reader, Measure_info &info) {
750: const char* buf;
751:
752: if(reader.read(buf, sizeof(JPG_Exif_TIFF_header))<sizeof(JPG_Exif_TIFF_header))
753: throw Exception(IMAGE_FORMAT, &origin_string, "not TIFF file - too small");
754:
755: JPG_Exif_TIFF_header *head=(JPG_Exif_TIFF_header *)buf;
756:
757: if(strncmp(head->byte_align_identifier, "II", 2)!=0 && strncmp(head->byte_align_identifier, "MM", 2)!=0)
758: throw Exception(IMAGE_FORMAT, &origin_string, "not TIFF file - wrong signature");
759:
760: bool is_big=head->byte_align_identifier[0]=='M'; // [M]otorola vs [I]ntel
761:
762: if(endian_to_ushort(is_big, head->signature) != 42)
763: throw Exception(IMAGE_FORMAT, &origin_string, "not TIFF file - wrong signature");
764:
765: reader.seek(endian_to_uint(is_big, head->first_IFD_offset), SEEK_SET);
766: if(!parse_tiff_IFD(is_big, reader, info))
767: throw Exception(IMAGE_FORMAT, &origin_string, "broken TIFF file - size field entry not found");
768: }
769:
1.164 moko 770: static void measure_gif(const String& origin_string, Measure_reader& reader, ushort& width, ushort& height) {
771:
772: const char* buf;
773: const size_t head_size=sizeof(GIF_Header);
774: if(reader.read(buf, head_size)<head_size)
775: throw Exception(IMAGE_FORMAT, &origin_string, "not GIF file - too small");
776: GIF_Header *head=(GIF_Header *)buf;
777:
778: if(strncmp(head->signature, "GIF", 3)!=0)
779: throw Exception(IMAGE_FORMAT, &origin_string, "not GIF file - wrong signature");
780:
781: width=endian_to_ushort(false, head->width);
782: height=endian_to_ushort(false, head->height);
783: }
784:
1.152 moko 785: static void measure_png(const String& origin_string, Measure_reader& reader, ushort& width, ushort& height) {
1.72 paf 786:
1.91 paf 787: const char* buf;
1.102 paf 788: const size_t head_size=sizeof(PNG_Header);
789: if(reader.read(buf, head_size)<head_size)
1.152 moko 790: throw Exception(IMAGE_FORMAT, &origin_string, "not PNG file - too small");
1.72 paf 791: PNG_Header *head=(PNG_Header *)buf;
792:
793: if(strncmp(head->signature, "IHDR", 4)!=0)
1.152 moko 794: throw Exception(IMAGE_FORMAT, &origin_string, "not PNG file - wrong signature");
1.72 paf 795:
1.80 paf 796: width=endian_to_ushort(true, head->width);
797: height=endian_to_ushort(true, head->height);
1.72 paf 798: }
799:
1.164 moko 800: static void measure_bmp(const String& origin_string, Measure_reader& reader, ushort& width, ushort& height) {
801:
802: const char* buf;
803: const size_t head_size=sizeof(BMP_Header);
804: if(reader.read(buf, head_size)<head_size)
805: throw Exception(IMAGE_FORMAT, &origin_string, "not BMP file - too small");
806: BMP_Header *head=(BMP_Header *)buf;
807:
808: if(strncmp(head->signature, "BM", 2)!=0)
809: throw Exception(IMAGE_FORMAT, &origin_string, "not BMP file - wrong signature");
810:
811: reader.seek(0, SEEK_END);
1.166 moko 812: if((uint)reader.tell() != endian_to_uint(false, head->file_size))
1.164 moko 813: throw Exception(IMAGE_FORMAT, &origin_string, "not BMP file - length header and file size do not match");
814:
815: width=endian_to_ushort(false, head->width);
816: height=endian_to_ushort(false, head->height);
817: }
818:
1.168 ! moko 819:
! 820: static void measure_webp(const String& origin_string, Measure_reader& reader, ushort& width, ushort& height) {
! 821: const char* buf;
! 822:
! 823: if(reader.read(buf, sizeof(WEBP_Header))<sizeof(WEBP_Header))
! 824: throw Exception(IMAGE_FORMAT, &origin_string, "not WEBP file - too small");
! 825:
! 826: WEBP_Header *head=(WEBP_Header *)buf;
! 827:
! 828: if(strncmp(head->signature_riff, "RIFF", 4)!=0 || strncmp(head->signature, "WEBP", 4)!=0)
! 829: throw Exception(IMAGE_FORMAT, &origin_string, "not WEBP file - wrong signature");
! 830:
! 831: if(strncmp(head->format, "VP8 ", 4)==0){
! 832: if(reader.read(buf, sizeof(WEBP_VP8_Chunk))<sizeof(WEBP_VP8_Chunk))
! 833: throw Exception(IMAGE_FORMAT, &origin_string, "broken WEBP file - too small VP8 chunk");
! 834:
! 835: WEBP_VP8_Chunk *chunk=(WEBP_VP8_Chunk *)buf;
! 836: if (chunk->signature[0] != 0x9D || chunk->signature[1] != 0x01 || chunk->signature[2] != 0x2A)
! 837: throw Exception(IMAGE_FORMAT, &origin_string, "broken WEBP file - wrong VP8 chunk signature");
! 838:
! 839: width=endian_to_ushort(false, chunk->width) & 0x3FFF;
! 840: height=endian_to_ushort(false, chunk->height) & 0x3FFF;
! 841: } else if(strncmp(head->format, "VP8L", 4)==0){
! 842: if(reader.read(buf, sizeof(WEBP_VP8L_Chunk))<sizeof(WEBP_VP8L_Chunk))
! 843: throw Exception(IMAGE_FORMAT, &origin_string, "broken WEBP file - too small VP8L chunk");
! 844:
! 845: WEBP_VP8L_Chunk *chunk=(WEBP_VP8L_Chunk *)buf;
! 846: if(chunk->signature != 0x2F)
! 847: throw Exception(IMAGE_FORMAT, &origin_string, "broken WEBP file - wrong VP8L chunk signature");
! 848:
! 849: uint wh=endian_to_uint(false, chunk->width_height);
! 850: width=(wh & 0x3FFF) + 1;
! 851: height=((wh >> 14) & 0x3FFF) + 1;
! 852: } else if (strncmp(head->format, "VP8X", 4)==0){
! 853: if(reader.read(buf, sizeof(WEBP_X_Chunk))<sizeof(WEBP_X_Chunk))
! 854: throw Exception(IMAGE_FORMAT, &origin_string, "broken WEBP file - too small VP8X chunk");
! 855:
! 856: WEBP_X_Chunk *chunk=(WEBP_X_Chunk *)buf;
! 857:
! 858: width=endian_to_ushort(false, chunk->width) + 1; // we ignore third byte to simplify code
! 859: height=endian_to_ushort(false, chunk->height) + 1; // we ignore third byte to simplify code
! 860: } else throw Exception(IMAGE_FORMAT, &origin_string, "broken WEBP file - invalid chunk signature");
! 861: }
! 862:
1.1 paf 863: // measure center
864:
1.162 moko 865: static void measure(const String& file_name, Measure_reader& reader, Measure_info &info) {
1.128 misha 866: const char* file_name_cstr=file_name.taint_cstr(String::L_FILE_SPEC);
1.91 paf 867: if(const char* cext=strrchr(file_name_cstr, '.')) {
1.1 paf 868: cext++;
869: if(strcasecmp(cext, "GIF")==0)
1.162 moko 870: measure_gif(file_name, reader, info.width, info.height);
1.165 moko 871: else if(strcasecmp(cext, "JPG")==0 || strcasecmp(cext, "JPEG")==0)
1.162 moko 872: measure_jpeg(file_name, reader, info);
1.72 paf 873: else if(strcasecmp(cext, "PNG")==0)
1.162 moko 874: measure_png(file_name, reader, info.width, info.height);
1.164 moko 875: else if(strcasecmp(cext, "BMP")==0)
876: measure_bmp(file_name, reader, info.width, info.height);
1.168 ! moko 877: else if(strcasecmp(cext, "WEBP")==0)
! 878: measure_webp(file_name, reader, info.width, info.height);
1.165 moko 879: else if(strcasecmp(cext, "TIF")==0 || strcasecmp(cext, "TIFF")==0)
880: measure_tiff(file_name, reader, info);
1.1 paf 881: else
1.152 moko 882: throw Exception(IMAGE_FORMAT, &file_name, "unhandled image file name extension '%s'", cext);
1.1 paf 883: } else
1.152 moko 884: throw Exception(IMAGE_FORMAT, &file_name, "can not determine image type - no file name extension");
1.1 paf 885: }
886:
1.77 paf 887: // methods
1.1 paf 888:
1.152 moko 889: static void file_measure_action(struct stat& /*finfo*/, int f, const String& file_spec, void *context) {
890: Measure_file_reader reader(f, file_spec);
1.162 moko 891: measure(file_spec, reader, *static_cast<Measure_info *>(context));
1.1 paf 892: }
893:
1.91 paf 894: static void _measure(Request& r, MethodParams& params) {
895: Value& data=params.as_no_junction(0, "data must not be code");
1.1 paf 896:
1.91 paf 897: Value* exif=0;
1.162 moko 898: Value* xmp=0;
1.163 moko 899: Measure_info info={ 0, 0, 0, 0, &pa_UTF8_charset };
900:
901: if(params.count()>1)
902: if(HashStringValue* options=params.as_hash(1, "methods options")) {
903: int valid_options=0;
904: for(HashStringValue::Iterator i(*options); i; i.next() ){
905: String::Body key=i.key();
906: Value* value=i.value();
907: if(key == "exif") {
908: if(r.process(*value).as_bool())
909: info.exif=&exif;
910: valid_options++;
911: }
912: if(key == "xmp") {
913: if(r.process(*value).as_bool())
914: info.xmp=&xmp;
915: valid_options++;
916: }
917: if(key == "xmp-charset") {
918: info.xmp_charset=&pa_charsets.get(value->as_string());
919: valid_options++;
920: }
921: }
922: if(valid_options!=options->count())
923: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
924: }
1.162 moko 925:
1.91 paf 926: const String* file_name;
1.162 moko 927:
928: if(file_name=data.get_string()) {
1.167 moko 929: file_read_action_under_lock(r.full_disk_path(*file_name), "measure", file_measure_action, &info);
1.1 paf 930: } else {
1.129 misha 931: VFile* vfile=data.as_vfile(String::L_AS_IS);
1.91 paf 932: file_name=&vfile->fields().get(name_name)->as_string();
1.162 moko 933: Measure_buf_reader reader(vfile->value_ptr(), vfile->value_size(), *file_name);
934: measure(*file_name, reader, info);
1.1 paf 935: }
936:
1.162 moko 937: GET_SELF(r, VImage).set(file_name, info.width, info.height, 0, exif, xmp);
1.1 paf 938: }
939:
1.161 moko 940: static void append_attrib_pair(String &tag, String::Body key, Value* value){
941: // skip border attribute with empty value
942: if(key=="border" && !value->is_defined())
1.4 paf 943: return;
944:
1.133 misha 945: // src="a.gif" width="123" ismap[=-1]
1.161 moko 946: tag << " " << key;
1.91 paf 947: if(value->is_string() || value->as_int()>=0)
1.161 moko 948: tag << "=\"" << value->as_string() << "\"";
1.3 paf 949: }
1.161 moko 950:
1.91 paf 951: static void _html(Request& r, MethodParams& params) {
952: String tag;
1.3 paf 953: tag << "<img";
1.4 paf 954:
1.91 paf 955: const HashStringValue& fields=GET_SELF(r, VImage).fields();
956: HashStringValue* attribs=0;
1.4 paf 957:
1.91 paf 958: if(params.count()) {
1.69 paf 959: // for backward compatibility: someday was ^html{}
1.154 moko 960: Value& vattribs=r.process(params[0]);
1.145 moko 961: if(!vattribs.is_string()) { // allow empty
1.100 paf 962: if((attribs=vattribs.get_hash())) {
1.161 moko 963: for(HashStringValue::Iterator i(*attribs); i; i.next() )
964: append_attrib_pair(tag, i.key(), i.value());
1.39 parser 965: } else
1.155 moko 966: throw Exception(PARSER_RUNTIME, 0, "attributes must be hash");
1.145 moko 967: }
1.39 parser 968: }
1.4 paf 969:
1.161 moko 970: for(HashStringValue::Iterator i(fields); i; i.next() ){
971: String::Body key=i.key();
972: // skip user-specified attributes
973: if(attribs && attribs->get(key))
974: continue;
975: // allow only html attributes (to exclude exif, line-*)
976: if(key=="src" || key=="width" || key=="height" || key=="border")
977: append_attrib_pair(tag, key, i.value());
1.91 paf 978: }
1.161 moko 979:
1.6 paf 980: tag << " />";
1.157 moko 981: r.write(tag);
1.3 paf 982: }
1.8 paf 983:
1.68 paf 984: /// @test wrap FILE to auto-object
1.155 moko 985: static gdImage* load(Request& r, const String& file_name){
1.167 moko 986: const char* file_name_cstr=r.full_disk_path(file_name).taint_cstr(String::L_FILE_SPEC);
1.159 moko 987: if(FILE *f=pa_fopen(file_name_cstr, "rb")) {
1.91 paf 988: gdImage* image=new gdImage;
989: bool ok=image->CreateFromGif(f);
1.16 paf 990: fclose(f);
1.23 paf 991: if(!ok)
1.155 moko 992: throw Exception(IMAGE_FORMAT, &file_name, "is not in GIF format");
1.91 paf 993: return image;
1.16 paf 994: } else {
1.155 moko 995: throw Exception("file.missing", 0, "can not open '%s'", file_name_cstr);
1.16 paf 996: }
997: }
998:
999:
1.91 paf 1000: static void _load(Request& r, MethodParams& params) {
1.116 misha 1001: const String& file_name=params.as_string(0, FILE_NAME_MUST_NOT_BE_CODE);
1.6 paf 1002:
1.91 paf 1003: gdImage* image=load(r, file_name);
1004: GET_SELF(r, VImage).set(&file_name, image->SX(), image->SY(), image);
1.6 paf 1005: }
1006:
1.91 paf 1007: static void _create(Request& r, MethodParams& params) {
1008: int width=params.as_int(0, "width must be int", r);
1009: int height=params.as_int(1, "height must be int", r);
1.8 paf 1010: int bgcolor_value=0xffFFff;
1.91 paf 1011: if(params.count()>2)
1012: bgcolor_value=params.as_int(2, "color must be int", r);
1013: gdImage* image=new gdImage;
1014: image->Create(width, height);
1015: image->FilledRectangle(0, 0, width-1, height-1, image->Color(bgcolor_value));
1016: GET_SELF(r, VImage).set(0, width, height, image);
1.6 paf 1017: }
1018:
1.91 paf 1019: static void _gif(Request& r, MethodParams& params) {
1.108 paf 1020: gdImage& image=GET_SELF(r, VImage).image();
1.6 paf 1021:
1.138 misha 1022: const String *file_name=params.count()>0?¶ms.as_string(0, FILE_NAME_MUST_BE_STRING):0;
1.10 paf 1023:
1.108 paf 1024: gdBuf buf=image.Gif();
1.6 paf 1025:
1.91 paf 1026: VFile& vfile=*new VFile;
1.137 misha 1027:
1.142 moko 1028: vfile.set_binary(false/*not tainted*/, (const char *)buf.ptr, buf.size, file_name, new VString(*new String("image/gif")));
1.137 misha 1029:
1.157 moko 1030: r.write(vfile);
1.6 paf 1031: }
1032:
1.91 paf 1033: static void _line(Request& r, MethodParams& params) {
1.108 paf 1034: gdImage& image=GET_SELF(r, VImage).image();
1.12 paf 1035:
1.108 paf 1036: image.Line(
1.91 paf 1037: params.as_int(0, "x0 must be int", r),
1038: params.as_int(1, "y0 must be int", r),
1039: params.as_int(2, "x1 must be int", r),
1040: params.as_int(3, "y1 must be int", r),
1.108 paf 1041: image.Color(params.as_int(4, "color must be int", r)));
1.13 paf 1042: }
1043:
1.91 paf 1044: static void _fill(Request& r, MethodParams& params) {
1.108 paf 1045: gdImage& image=GET_SELF(r, VImage).image();
1.12 paf 1046:
1.108 paf 1047: image.Fill(
1.91 paf 1048: params.as_int(0, "x must be int", r),
1049: params.as_int(1, "y must be int", r),
1.108 paf 1050: image.Color(params.as_int(2, "color must be int", r)));
1.13 paf 1051: }
1052:
1.91 paf 1053: static void _rectangle(Request& r, MethodParams& params) {
1.108 paf 1054: gdImage& image=GET_SELF(r, VImage).image();
1.13 paf 1055:
1.108 paf 1056: image.Rectangle(
1.91 paf 1057: params.as_int(0, "x0 must be int", r),
1058: params.as_int(1, "y0 must be int", r),
1059: params.as_int(2, "x1 must be int", r),
1060: params.as_int(3, "y1 must be int", r),
1.108 paf 1061: image.Color(params.as_int(4, "color must be int", r)));
1.13 paf 1062: }
1063:
1.91 paf 1064: static void _bar(Request& r, MethodParams& params) {
1.108 paf 1065: gdImage& image=GET_SELF(r, VImage).image();
1.13 paf 1066:
1.108 paf 1067: image.FilledRectangle(
1.91 paf 1068: params.as_int(0, "x0 must be int", r),
1069: params.as_int(1, "y0 must be int", r),
1070: params.as_int(2, "x1 must be int", r),
1071: params.as_int(3, "y1 must be int", r),
1.108 paf 1072: image.Color(params.as_int(4, "color must be int", r)));
1.13 paf 1073: }
1074:
1.44 parser 1075: #ifndef DOXYGEN
1.155 moko 1076: static void add_point(Table::element_type row, gdImage::Point **p) {
1.110 paf 1077: if(row->count()!=2)
1.155 moko 1078: throw Exception(0, 0, "coordinates table must contain two columns: x and y values");
1.91 paf 1079: (**p).x=row->get(0)->as_int();
1080: (**p).y=row->get(1)->as_int();
1.44 parser 1081: (*p)++;
1082: }
1083: #endif
1.135 misha 1084: #ifndef DOXYGEN
1.155 moko 1085: static void add_point(int x, int y, gdImage::Point **p) {
1.135 misha 1086: (**p).x=x;
1087: (**p).y=y;
1088: (*p)++;
1089: }
1090: #endif
1.91 paf 1091: static void _replace(Request& r, MethodParams& params) {
1.135 misha 1092: int src_color=params.as_int(0, "src color must be int", r);
1093: int dest_color=params.as_int(1, "dest color must be int", r);
1094:
1.108 paf 1095: gdImage& image=GET_SELF(r, VImage).image();
1.13 paf 1096:
1.135 misha 1097: gdImage::Point* all_p=0;
1098: size_t count=0;
1099: if(params.count() == 3){
1.140 misha 1100: Table* table=params.as_table(2, "coordinates");
1.135 misha 1101: count=table->count();
1102: all_p=new(PointerFreeGC) gdImage::Point[count];
1103: gdImage::Point* add_p=all_p;
1104: table->for_each(add_point, &add_p);
1105: } else {
1106: int max_x=image.SX()-1;
1107: int max_y=image.SY()-1;
1108: if(max_x > 0 && max_y > 0){
1109: count=4;
1110: all_p=new(PointerFreeGC) gdImage::Point[count];
1111: gdImage::Point* add_p=all_p;
1112: add_point(0, 0, &add_p);
1113: add_point(max_x, 0, &add_p);
1114: add_point(max_x, max_y, &add_p);
1115: add_point(0, max_y, &add_p);
1116: }
1117: }
1.13 paf 1118:
1.135 misha 1119: if(count)
1120: image.FilledPolygonReplaceColor(all_p, count, image.Color(src_color), image.Color(dest_color));
1.13 paf 1121: }
1122:
1.91 paf 1123: static void _polyline(Request& r, MethodParams& params) {
1.108 paf 1124: gdImage& image=GET_SELF(r, VImage).image();
1.13 paf 1125:
1.140 misha 1126: Table* table=params.as_table(1, "coordinates");
1.44 parser 1127:
1.92 paf 1128: gdImage::Point* all_p=new(PointerFreeGC) gdImage::Point[table->count()];
1.44 parser 1129: gdImage::Point *add_p=all_p;
1130: table->for_each(add_point, &add_p);
1.108 paf 1131: image.Polygon(all_p, table->count(),
1132: image.Color(params.as_int(0, "color must be int", r)),
1.44 parser 1133: false/*not closed*/);
1134: }
1135:
1.91 paf 1136: static void _polygon(Request& r, MethodParams& params) {
1.108 paf 1137: gdImage& image=GET_SELF(r, VImage).image();
1.13 paf 1138:
1.140 misha 1139: Table* table=(Table*)params.as_table(1, "coordinates");
1.44 parser 1140:
1.92 paf 1141: gdImage::Point* all_p=new(PointerFreeGC) gdImage::Point[table->count()];
1.44 parser 1142: gdImage::Point *add_p=all_p;
1143: table->for_each(add_point, &add_p);
1.108 paf 1144: image.Polygon(all_p, table->count(),
1145: image.Color(params.as_int(0, "color must be int", r)));
1.13 paf 1146: }
1147:
1.91 paf 1148: static void _polybar(Request& r, MethodParams& params) {
1.108 paf 1149: gdImage& image=GET_SELF(r, VImage).image();
1.13 paf 1150:
1.140 misha 1151: Table* table=(Table*)params.as_table(1, "coordinates");
1.13 paf 1152:
1.92 paf 1153: gdImage::Point* all_p=new(PointerFreeGC) gdImage::Point[table->count()];
1.44 parser 1154: gdImage::Point *add_p=all_p;
1155: table->for_each(add_point, &add_p);
1.108 paf 1156: image.FilledPolygon(all_p, table->count(),
1157: image.Color(params.as_int(0, "color must be int", r)));
1.12 paf 1158: }
1159:
1.16 paf 1160: // font
1161:
1.85 paf 1162: #define Y(y)(y+index*height)
1.21 paf 1163:
1.91 paf 1164: // Font class
1165:
1.155 moko 1166: Font::Font(Charset& asource_charset, const String& aalphabet, gdImage* aifont, int aheight, int amonospace, int aspacebarspace, int aletterspacing):
1.158 moko 1167: letterspacing(aletterspacing),
1.132 misha 1168: height(aheight),
1169: monospace(amonospace),
1170: spacebarspace(aspacebarspace),
1.100 paf 1171: ifont(aifont),
1.158 moko 1172: alphabet(aalphabet),
1173: fsource_charset(asource_charset){
1.132 misha 1174:
1175: if(fsource_charset.isUTF8()){
1176: size_t index=0;
1177: for(UTF8_string_iterator i(alphabet); i.has_next(); )
1178: fletter2index.put_dont_replace(i.next(), index++);
1179: }
1.91 paf 1180: }
1181:
1182: /* ******************************** char ********************************** */
1183:
1184: size_t Font::index_of(char ch) {
1185: if(ch==' ') return STRING_NOT_FOUND;
1186: return alphabet.pos(ch);
1187: }
1188:
1.132 misha 1189: size_t Font::index_of(XMLCh ch) {
1190: if(ch==' ') return STRING_NOT_FOUND;
1191: return fletter2index.get(ch);
1192: }
1193:
1.91 paf 1194: int Font::index_width(size_t index) {
1195: if(index==STRING_NOT_FOUND)
1196: return spacebarspace;
1197: int tr=ifont->GetTransparent();
1198: for(int x=ifont->SX()-1; x>=0; x--) {
1199: for(int y=0; y<height; y++)
1200: if(ifont->GetPixel(x, Y(y))!=tr)
1201: return x+1;
1.16 paf 1202: }
1.91 paf 1203: return 0;
1204: }
1205:
1.108 paf 1206: void Font::index_display(gdImage& image, int x, int y, size_t index){
1.91 paf 1207: if(index!=STRING_NOT_FOUND)
1.108 paf 1208: ifont->Copy(image, x, y, 0, Y(0), index_width(index), height);
1.91 paf 1209: }
1210:
1211: /* ******************************** string ********************************** */
1212:
1213: int Font::step_width(int index) {
1.125 misha 1214: return letterspacing + (monospace ? monospace : index_width(index));
1.91 paf 1215: }
1216:
1217: // counts trailing letter_spacing, consider this OK. useful for contiuations
1218: int Font::string_width(const String& s){
1219: const char* cstr=s.cstr();
1220: int result=0;
1.132 misha 1221:
1222: if(fsource_charset.isUTF8()){
1223: for(UTF8_string_iterator i(s); i.has_next(); )
1224: result+=step_width(index_of(i.next()));
1225: } else {
1226: for(const char* current=cstr; *current; current++)
1227: result+=step_width(index_of(*current));
1228: }
1229:
1.91 paf 1230: return result;
1231: }
1232:
1.108 paf 1233: void Font::string_display(gdImage& image, int x, int y, const String& s){
1.91 paf 1234: const char* cstr=s.cstr();
1.132 misha 1235:
1236: if(fsource_charset.isUTF8()){
1237: for(UTF8_string_iterator i(s); i.has_next(); ){
1238: size_t index=index_of(i.next());
1239: index_display(image, x, y, index);
1240: x+=step_width(index);
1241: }
1242: } else {
1243: for(const char* current=cstr; *current; current++) {
1244: size_t index=index_of(*current);
1245: index_display(image, x, y, index);
1246: x+=step_width(index);
1247: }
1.87 paf 1248: }
1.91 paf 1249: }
1.87 paf 1250:
1.91 paf 1251: //
1.35 parser 1252:
1.16 paf 1253:
1.91 paf 1254: static void _font(Request& r, MethodParams& params) {
1255: const String& alphabet=params.as_string(0, "alphabet must not be code");
1.131 misha 1256: size_t alphabet_length=alphabet.length(r.charsets.source());
1257: if(!alphabet_length)
1.155 moko 1258: throw Exception(PARSER_RUNTIME, 0, "alphabet must not be empty");
1.84 paf 1259:
1.125 misha 1260: gdImage* image=load(r, params.as_string(1, FILE_NAME_MUST_NOT_BE_CODE));
1261:
1.126 misha 1262: int spacebar_width=image->SX();
1.125 misha 1263: int monospace_width=0; // proportional
1264: int letter_spacing=1;
1265: if(params.count()>2){
1.144 moko 1266: if(HashStringValue* options=params[2].get_hash()){
1.125 misha 1267: // third option is hash
1268: if(params.count()>3)
1.144 moko 1269: throw Exception(PARSER_RUNTIME, 0, "too many params were specified");
1.125 misha 1270: int valid_options=0;
1271: if(Value* vspacebar_width=options->get(spacebar_width_name)){
1272: valid_options++;
1.153 moko 1273: spacebar_width=r.process(*vspacebar_width).as_int();
1.125 misha 1274: }
1275: if(Value* vmonospace_width=options->get(monospace_width_name)){
1276: valid_options++;
1.153 moko 1277: monospace_width=r.process(*vmonospace_width).as_int();
1.125 misha 1278: if(!monospace_width)
1279: monospace_width=image->SX();
1280: }
1281: if(Value* vletter_spacing=options->get(letter_spacing_name)){
1282: valid_options++;
1.153 moko 1283: letter_spacing=r.process(*vletter_spacing).as_int();
1.125 misha 1284: }
1285: if(valid_options!=options->count())
1.134 misha 1286: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.125 misha 1287: } else {
1288: // backward
1.144 moko 1289: spacebar_width=params.as_int(2, "param must be int or hash", r);
1.125 misha 1290: if(params.count()>3) {
1291: monospace_width=params.as_int(3, "monospace_width must be int", r);
1292: if(!monospace_width)
1293: monospace_width=image->SX();
1294: }
1295: }
1296: }
1297:
1.131 misha 1298: if(int remainder=image->SY() % alphabet_length)
1.155 moko 1299: 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 1300:
1.155 moko 1301: 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 1302: }
1303:
1.91 paf 1304: static void _text(Request& r, MethodParams& params) {
1305: int x=params.as_int(0, "x must be int", r);
1306: int y=params.as_int(1, "y must be int", r);
1307: const String& s=params.as_string(2, "text must not be code");
1.16 paf 1308:
1.91 paf 1309: VImage& vimage=GET_SELF(r, VImage);
1.108 paf 1310: vimage.font().string_display(vimage.image(), x, y, s);
1.16 paf 1311: }
1312:
1.91 paf 1313: static void _length(Request& r, MethodParams& params) {
1314: const String& s=params.as_string(0, "text must not be code");
1.47 parser 1315:
1.91 paf 1316: VImage& vimage=GET_SELF(r, VImage);
1.157 moko 1317: r.write(*new VInt(vimage.font().string_width(s)));
1.47 parser 1318: }
1319:
1.91 paf 1320: static void _arc(Request& r, MethodParams& params) {
1.108 paf 1321: gdImage& image=GET_SELF(r, VImage).image();
1.48 parser 1322:
1.108 paf 1323: image.Arc(
1.91 paf 1324: params.as_int(0, "center_x must be int", r),
1325: params.as_int(1, "center_y must be int", r),
1326: params.as_int(2, "width must be int", r),
1327: params.as_int(3, "height must be int", r),
1328: params.as_int(4, "start degrees must be int", r),
1329: params.as_int(5, "end degrees must be int", r),
1.108 paf 1330: image.Color(params.as_int(6, "cx must be int", r)));
1.48 parser 1331: }
1332:
1.91 paf 1333: static void _sector(Request& r, MethodParams& params) {
1.108 paf 1334: gdImage& image=GET_SELF(r, VImage).image();
1.49 parser 1335:
1.108 paf 1336: image.Sector(
1.91 paf 1337: params.as_int(0, "center_x must be int", r),
1338: params.as_int(1, "center_y must be int", r),
1339: params.as_int(2, "width must be int", r),
1340: params.as_int(3, "height must be int", r),
1341: params.as_int(4, "start degrees must be int", r),
1342: params.as_int(5, "end degrees must be int", r),
1.108 paf 1343: image.Color(params.as_int(6, "color must be int", r)));
1.49 parser 1344: }
1345:
1.91 paf 1346: static void _circle(Request& r, MethodParams& params) {
1.108 paf 1347: gdImage& image=GET_SELF(r, VImage).image();
1.48 parser 1348:
1.91 paf 1349: int size=params.as_int(2, "radius must be int", r)*2;
1.108 paf 1350: image.Arc(
1.91 paf 1351: params.as_int(0, "center_x must be int", r),
1352: params.as_int(1, "center_y must be int", r),
1.50 parser 1353: size, //w
1354: size, //h
1.48 parser 1355: 0, //s
1356: 360, //e
1.108 paf 1357: image.Color(params.as_int(3, "color must be int", r)));
1.48 parser 1358: }
1359:
1.108 paf 1360: gdImage& as_image(MethodParams& params, int index, const char* msg) {
1.91 paf 1361: Value& value=params.as_no_junction(index, msg);
1.53 parser 1362:
1.130 misha 1363: if(Value* vimage=value.as(VIMAGE_TYPE)) {
1.108 paf 1364: return static_cast<VImage *>(vimage)->image();
1.75 paf 1365: } else
1.155 moko 1366: throw Exception(PARSER_RUNTIME, 0, msg);
1.53 parser 1367: }
1368:
1.91 paf 1369: static void _copy(Request& r, MethodParams& params) {
1.108 paf 1370: gdImage& dest=GET_SELF(r, VImage).image();
1.53 parser 1371:
1.108 paf 1372: gdImage& src=as_image(params, 0, "src must be image");
1.53 parser 1373:
1.91 paf 1374: int sx=params.as_int(1, "src_x must be int", r);
1375: int sy=params.as_int(2, "src_y must be int", r);
1376: int sw=params.as_int(3, "src_w must be int", r);
1377: int sh=params.as_int(4, "src_h must be int", r);
1378: int dx=params.as_int(5, "dest_x must be int", r);
1379: int dy=params.as_int(6, "dest_y must be int", r);
1380: if(params.count()>1+2+2+2) {
1381: int dw=params.as_int(1+2+2+2, "dest_w must be int", r);
1382: int dh=(int)(params.count()>1+2+2+2+1?
1383: params.as_int(1+2+2+2+1, "dest_h must be int", r):sh*(((double)dw)/((double)sw)));
1384: int tolerance=params.count()>1+2+2+2+2?
1385: params.as_int(1+2+2+2+2, "tolerance must be int", r):150;
1.53 parser 1386:
1.108 paf 1387: src.CopyResampled(dest, dx, dy, sx, sy, dw, dh, sw, sh, tolerance);
1.53 parser 1388: } else
1.108 paf 1389: src.Copy(dest, dx, dy, sx, sy, sw, sh);
1390: }
1391:
1392: static void _pixel(Request& r, MethodParams& params) {
1393: gdImage& image=GET_SELF(r, VImage).image();
1394:
1.109 paf 1395: int x=params.as_int(0, "x must be int", r);
1396: int y=params.as_int(1, "y must be int", r);
1397:
1398: if(params.count()>2) {
1399: image.SetPixel(x, y,
1400: image.Color(params.as_int(2, "color must be int", r)));
1401: } else
1.157 moko 1402: r.write(*new VInt(image.DecodeColor(image.GetPixel(x, y))));
1.53 parser 1403: }
1404:
1405:
1.22 paf 1406: // constructor
1407:
1.91 paf 1408: MImage::MImage(): Methoded("image") {
1.1 paf 1409: // ^image:measure[DATA]
1.163 moko 1410: // ^image:measure[DATA; $.exif(false) $.xmp(false) $.xmp-charset[UTF-8] ]
1411: add_native_method("measure", Method::CT_DYNAMIC, _measure, 1, 2);
1.3 paf 1412:
1.25 paf 1413: // ^image.html[]
1414: // ^image.html[hash]
1.22 paf 1415: add_native_method("html", Method::CT_DYNAMIC, _html, 0, 1);
1.6 paf 1416:
1.25 paf 1417: // ^image.load[background.gif]
1.22 paf 1418: add_native_method("load", Method::CT_DYNAMIC, _load, 1, 1);
1.6 paf 1419:
1.25 paf 1420: // ^image.create[width;height] bgcolor=white
1421: // ^image.create[width;height;bgcolor]
1.22 paf 1422: add_native_method("create", Method::CT_DYNAMIC, _create, 2, 3);
1.6 paf 1423:
1.25 paf 1424: // ^image.gif[]
1.95 paf 1425: add_native_method("gif", Method::CT_DYNAMIC, _gif, 0, 1);
1.12 paf 1426:
1.25 paf 1427: // ^image.line(x0;y0;x1;y1;color)
1.22 paf 1428: add_native_method("line", Method::CT_DYNAMIC, _line, 5, 5);
1.13 paf 1429:
1.25 paf 1430: // ^image.fill(x;y;color)
1.22 paf 1431: add_native_method("fill", Method::CT_DYNAMIC, _fill, 3, 3);
1.13 paf 1432:
1.25 paf 1433: // ^image.rectangle(x0;y0;x1;y1;color)
1.22 paf 1434: add_native_method("rectangle", Method::CT_DYNAMIC, _rectangle, 5, 5);
1.13 paf 1435:
1.25 paf 1436: // ^image.bar(x0;y0;x1;y1;color)
1.22 paf 1437: add_native_method("bar", Method::CT_DYNAMIC, _bar, 5, 5);
1.13 paf 1438:
1.44 parser 1439: // ^image.replace(color-source;color-dest)[table x:y]
1.135 misha 1440: // ^image.replace(color-source;color-dest)
1441: add_native_method("replace", Method::CT_DYNAMIC, _replace, 2, 3);
1.44 parser 1442:
1443: // ^image.polyline(color)[table x:y]
1444: add_native_method("polyline", Method::CT_DYNAMIC, _polyline, 2, 2);
1.13 paf 1445:
1.44 parser 1446: // ^image.polygon(color)[table x:y]
1447: add_native_method("polygon", Method::CT_DYNAMIC, _polygon, 2, 2);
1.13 paf 1448:
1.44 parser 1449: // ^image.polybar(color)[table x:y]
1450: add_native_method("polybar", Method::CT_DYNAMIC, _polybar, 2, 2);
1.13 paf 1451:
1.125 misha 1452: // ^image.font[alPHAbet;font-file-name.gif]
1453: // ^image.font[alPHAbet;font-file-name.gif](spacebar_width)
1454: // ^image.font[alPHAbet;font-file-name.gif](spacebar_width;letter_width)
1455: // ^image.font[alPHAbet;font-file-name.gif][$.space-width(.) $.letter-width(.) $.letter-space(.)]
1456: add_native_method("font", Method::CT_DYNAMIC, _font, 2, 4);
1.16 paf 1457:
1.125 misha 1458: // ^image.text(x;y)[text]
1.22 paf 1459: add_native_method("text", Method::CT_DYNAMIC, _text, 3, 3);
1.47 parser 1460:
1.125 misha 1461: // ^image.length[text]
1.47 parser 1462: add_native_method("length", Method::CT_DYNAMIC, _length, 1, 1);
1.16 paf 1463:
1.48 parser 1464: // ^image.arc(center x;center y;width;height;start in degrees;end in degrees;color)
1465: add_native_method("arc", Method::CT_DYNAMIC, _arc, 7, 7);
1.49 parser 1466:
1467: // ^image.sector(center x;center y;width;height;start in degrees;end in degrees;color)
1468: add_native_method("sector", Method::CT_DYNAMIC, _sector, 7, 7);
1.48 parser 1469:
1470: // ^image.circle(center x;center y;r;color)
1471: add_native_method("circle", Method::CT_DYNAMIC, _circle, 4, 4);
1472:
1.56 parser 1473: // ^image.copy[source](src x;src y;src w;src h;dst x;dst y[;dest w[;dest h[;tolerance]]])
1474: add_native_method("copy", Method::CT_DYNAMIC, _copy, 1+2+2+2, (1+2+2+2)+2+1);
1.108 paf 1475:
1476: // ^image.pixel(x;y)[(color)]
1.109 paf 1477: add_native_method("pixel", Method::CT_DYNAMIC, _pixel, 2, 3);
1.1 paf 1478: }
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