Annotation of parser3/src/classes/image.C, revision 1.181
1.1 paf 1: /** @file
2: Parser: @b image parser class.
3:
1.179 moko 4: Copyright (c) 2001-2020 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:
1.181 ! moko 29: volatile const char * IDENT_IMAGE_C="$Id: image.C,v 1.180 2020/12/17 19:51:21 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:
1.170 moko 231:
1.169 moko 232: ///*********************************************** support functions
1.91 paf 233:
1.1 paf 234: class Measure_reader {
235: public:
1.91 paf 236: virtual size_t read(const char* &buf, size_t limit)=0;
1.174 moko 237: virtual void seek(uint64_t value)=0;
238: virtual uint64_t tell()=0;
239: virtual uint64_t length()=0;
1.77 paf 240: };
1.1 paf 241:
1.77 paf 242: class Measure_file_reader: public Measure_reader {
1.152 moko 243: const String& file_name;
1.91 paf 244: int f;
245:
1.77 paf 246: public:
1.152 moko 247: Measure_file_reader(int af, const String& afile_name):
248: file_name(afile_name), f(af) {
1.1 paf 249: }
250:
1.91 paf 251: override size_t read(const char* &abuf, size_t limit) {
1.77 paf 252: if(limit==0)
1.1 paf 253: return 0;
1.77 paf 254:
1.91 paf 255: char* lbuf=new(PointerFreeGC) char[limit];
1.143 moko 256: ssize_t read_size=::read(f, lbuf, limit); abuf=lbuf;
257: if(read_size<0)
258: throw Exception(0, &file_name, "measure read failed: %s (%d)", strerror(errno), errno);
1.1 paf 259: return read_size;
260: }
261:
1.174 moko 262: override void seek(uint64_t value) {
263: if(pa_lseek(f, value, SEEK_SET)<0)
264: throw Exception(IMAGE_FORMAT, &file_name, "seek to %.15g failed: %s (%d)", (double)value, strerror(errno), errno);
1.77 paf 265: }
266:
1.174 moko 267: override uint64_t tell() { return pa_lseek(f, 0, SEEK_CUR); }
268:
269: override uint64_t length() { return pa_lseek(f, 0, SEEK_END); }
1.79 paf 270:
1.77 paf 271: };
272:
273: class Measure_buf_reader: public Measure_reader {
1.91 paf 274:
275: const char* buf; size_t size;
276: const String& file_name;
277:
278: size_t offset;
279:
1.77 paf 280: public:
1.91 paf 281: Measure_buf_reader(const char* abuf, size_t asize, const String& afile_name):
1.77 paf 282: buf(abuf), size(asize), file_name(afile_name), offset(0) {
283: }
284:
1.91 paf 285: override size_t read(const char* &abuf, size_t limit) {
1.77 paf 286: size_t to_read=min(limit, size-offset);
1.91 paf 287: abuf=buf+offset;
1.77 paf 288: offset+=to_read;
289: return to_read;
290: }
291:
1.174 moko 292: override void seek(uint64_t value) {
293: if(value>(uint64_t)size)
294: throw Exception(IMAGE_FORMAT, &file_name, "seek to %.15g failed: out of buffer (%.15g)", value, size);
295: offset=(size_t)value;
1.77 paf 296: }
297:
1.174 moko 298: override uint64_t tell() { return offset; }
299:
300: override uint64_t length() { return size; }
1.79 paf 301:
1.1 paf 302: };
1.77 paf 303:
1.1 paf 304:
1.169 moko 305: struct Measure_info {
306: ushort width;
307: ushort height;
308: Value** exif;
309: Value** xmp;
310: Charset* xmp_charset;
1.181 ! moko 311: bool video;
1.72 paf 312: };
313:
1.164 moko 314:
1.169 moko 315: inline ushort x_endian_to_ushort(uchar b0, uchar b1) {
316: return (ushort)((b1<<8) + b0);
317: }
318:
319: inline uint x_endian_to_uint(uchar b0, uchar b1, uchar b2, uchar b3) {
320: return (uint)(((((b3<<8) + b2)<<8)+b1)<<8)+b0;
321: }
322:
323: inline ushort endian_to_ushort(bool is_big, const uchar *b/* [2] */) {
324: return is_big ? x_endian_to_ushort(b[1], b[0]) : x_endian_to_ushort(b[0], b[1]);
325: }
326:
327: inline uint endian_to_uint(bool is_big, const uchar *b /* [4] */) {
328: 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]);
329: }
1.1 paf 330:
1.170 moko 331:
1.169 moko 332: ///*********************************************** JPEG
1.170 moko 333:
1.31 parser 334: struct JPG_Segment_head {
1.80 paf 335: uchar marker;
336: uchar code;
337: uchar length[2];
1.1 paf 338: };
1.21 paf 339: /// JPEG frame header
1.31 parser 340: struct JPG_Size_segment_body {
1.164 moko 341: char data; //< data precision of bits/sample
342: uchar height[2]; //< image height
343: uchar width[2]; //< image width
344: char numComponents; //< number of color components
1.1 paf 345: };
346:
1.80 paf 347: /// JPEG Exif TIFF Header
348: struct JPG_Exif_TIFF_header {
1.165 moko 349: char byte_align_identifier[2];
350: uchar signature[2]; // always 000A [or 0A00]
1.80 paf 351: uchar first_IFD_offset[4]; // Usually the first IFD starts immediately next to TIFF header, so this offset has value '0x00000008'.
352: };
353:
354: // JPEG Exif IFD start
1.91 paf 355: struct JPG_Exif_IFD_begin {
1.80 paf 356: uchar directory_entry_count[2]; // the number of directory entry contains in this IFD
357: };
358:
359: // TTTT ffff NNNNNNNN DDDDDDDD
360: struct JPG_Exif_IFD_entry {
361: uchar tag[2]; // Tag number, this shows a kind of data
362: uchar format[2]; // data format
363: uchar components_count[4]; // number of components
364: uchar value_or_offset_to_it[4]; // data value or offset to data value
365: };
366:
367: #define JPG_IFD_TAG_EXIF_OFFSET 0x8769
368:
1.118 misha 369: #define JPG_IFD_TAG_EXIF_GPS_OFFSET 0x8825
370:
1.89 paf 371: #define JPEG_EXIF_DATE_CHARS 20
372:
1.155 moko 373: static Value* parse_IFD_entry_formatted_one_value(bool is_big, ushort format, size_t component_size, const uchar *value) {
1.80 paf 374: switch(format) {
375: case 1: // unsigned byte
1.91 paf 376: return new VInt((uchar)value[0]);
1.80 paf 377: case 3: // unsigned short
1.91 paf 378: return new VInt(endian_to_ushort(is_big, value));
1.80 paf 379: case 4: // unsigned long
380: // 'double' because parser's Int is signed
1.91 paf 381: return new VDouble(endian_to_uint(is_big, value));
1.80 paf 382: case 5: // unsigned rational
383: {
384: uint numerator=endian_to_uint(is_big, value); value+=component_size/2;
385: uint denominator=endian_to_uint(is_big, value);
386: if(!denominator)
387: return 0;
1.91 paf 388: return new VDouble(((double)numerator)/denominator);
1.80 paf 389: }
390: case 6: // signed byte
1.91 paf 391: return new VInt((signed char)value[0]);
1.80 paf 392: case 8: // signed short
1.91 paf 393: return new VInt((signed short)endian_to_ushort(is_big, value));
1.80 paf 394: case 9: // signed long
1.91 paf 395: return new VInt((signed int)endian_to_uint(is_big, value));
1.80 paf 396: case 10: // signed rational
397: {
398: signed int numerator=(signed int)endian_to_uint(is_big, value); value+=component_size/2;
399: uint denominator=endian_to_uint(is_big, value);
400: if(!denominator)
401: return 0;
1.91 paf 402: return new VDouble(numerator/denominator);
1.80 paf 403: }
404: /*
405: case 11: // single float
1.120 misha 406: @todo
1.80 paf 407: case 12: // double float
1.120 misha 408: @todo
1.80 paf 409: */
410: };
411:
412: return 0;
413: }
414:
1.89 paf 415: // date.C
1.147 moko 416: tm cstr_to_time_t(char *, const char **);
1.89 paf 417:
1.155 moko 418: 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 419: if(format==2) { // ascii string, exception: the only type with varying size
1.91 paf 420: const char* cstr=(const char* )value;
421: size_t length=components_count;
1.89 paf 422: // Data format is "YYYY:MM:DD HH:MM:SS"+0x00, total 20bytes
1.155 moko 423: if(length==JPEG_EXIF_DATE_CHARS && isdigit((unsigned char)cstr[0]) && cstr[length-1]==0) {
424: char cstr_writable[JPEG_EXIF_DATE_CHARS];
1.89 paf 425: strcpy(cstr_writable, cstr);
426:
1.106 paf 427: try {
1.147 moko 428: tm tmIn=cstr_to_time_t(cstr_writable, 0);
1.146 moko 429: return new VDate(tmIn);
1.106 paf 430: }
431: catch(...) { /*ignore bad date times*/ }
1.89 paf 432: }
433:
1.123 misha 434: return new VString(*new String(cstr, String::L_TAINTED));
1.80 paf 435: }
436:
437: if(components_count==1)
1.91 paf 438: return parse_IFD_entry_formatted_one_value(is_big, format, component_size, value);
1.80 paf 439:
1.91 paf 440: VHash* result=new VHash;
441: HashStringValue& hash=result->hash();
1.80 paf 442: for(uint i=0; i<components_count; i++, value+=component_size) {
1.91 paf 443: hash.put(
1.93 paf 444: String::Body::Format(i),
1.91 paf 445: parse_IFD_entry_formatted_one_value(is_big, format, component_size, value));
1.80 paf 446: }
447:
1.91 paf 448: return result;
1.80 paf 449: }
450:
1.176 moko 451: static Value* parse_IFD_entry_value(bool is_big, Measure_reader& reader, uint64_t tiff_base, JPG_Exif_IFD_entry& entry) {
1.80 paf 452: size_t format2component_size[]={
453: 0, // undefined
454: 1, // unsigned byte
455: 1, // ascii string
456: 2, // unsigned short
457: 4, // unsigned long
458: 8, // unsigned rational
459: 1, // signed byte
460: 0, // undefined
461: 2, // signed short
462: 4, // signed long
463: 8, // signed rational
464: /*
465: 4, // single float
466: 8, // double float
467: */
468: };
469:
470: ushort format=endian_to_ushort(is_big, entry.format);
471: if(format>=sizeof(format2component_size)/sizeof(format2component_size[0]))
472: return 0; // format out of range, ignoring
473:
474: size_t component_size=format2component_size[format];
475: if(component_size==0)
476: return 0; // undefined format
477:
478: // You can get the total data byte length by multiplies
479: // a 'bytes/components' value (see above chart) by number of components stored 'NNNNNNNN' area
480: uint components_count=endian_to_uint(is_big, entry.components_count);
1.121 misha 481: uint value_size=component_size*components_count;
1.80 paf 482: // If its size is over 4bytes, 'DDDDDDDD' contains the offset to data stored address
1.91 paf 483: Value* result;
1.80 paf 484:
485: if(value_size<=4)
1.155 moko 486: result=parse_IFD_entry_formatted_value(is_big, format, component_size, components_count, entry.value_or_offset_to_it);
1.80 paf 487: else {
1.174 moko 488: uint64_t remembered=reader.tell();
1.80 paf 489: {
1.174 moko 490: reader.seek(tiff_base+endian_to_uint(is_big, entry.value_or_offset_to_it));
1.91 paf 491: const char* value;
1.156 moko 492: if(reader.read(value, value_size)<value_size)
1.80 paf 493: return 0;
1.155 moko 494: result=parse_IFD_entry_formatted_value(is_big, format, component_size, components_count, (const uchar*)value);
1.80 paf 495: }
1.174 moko 496: reader.seek(remembered);
1.80 paf 497: }
498:
499: return result;
500: }
501:
1.176 moko 502: static void parse_IFD(HashStringValue& hash, bool is_big, Measure_reader& reader, uint64_t tiff_base, bool gps=false);
1.91 paf 503:
1.176 moko 504: static void parse_IFD_entry(HashStringValue& hash, bool is_big, Measure_reader& reader, uint64_t tiff_base, JPG_Exif_IFD_entry& entry, bool gps=false) {
1.80 paf 505: ushort tag=endian_to_ushort(is_big, entry.tag);
1.118 misha 506:
507: if(tag==JPG_IFD_TAG_EXIF_OFFSET || tag==JPG_IFD_TAG_EXIF_GPS_OFFSET){
1.174 moko 508: uint64_t remembered=reader.tell();
1.80 paf 509: {
1.174 moko 510: reader.seek(tiff_base+endian_to_uint(is_big, entry.value_or_offset_to_it));
1.118 misha 511: parse_IFD(hash, is_big, reader, tiff_base, (tag==JPG_IFD_TAG_EXIF_GPS_OFFSET)?true:gps);
1.80 paf 512: }
1.174 moko 513: reader.seek(remembered);
1.80 paf 514: return;
515: }
1.118 misha 516:
1.91 paf 517: if(Value* value=parse_IFD_entry_value(is_big, reader, tiff_base, entry)) {
1.118 misha 518: if(const char* name=(gps)?exif_gps_tag_value2name.get(tag):exif_tag_value2name.get(tag))
1.148 moko 519: hash.put(name, value);
1.80 paf 520: else
1.93 paf 521: hash.put(String::Body::Format(tag), value);
1.80 paf 522: }
1.1 paf 523: }
524:
1.176 moko 525: static void parse_IFD(HashStringValue& hash, bool is_big, Measure_reader& reader, uint64_t tiff_base, bool gps) {
1.91 paf 526: const char* buf;
527: if(reader.read(buf, sizeof(JPG_Exif_IFD_begin))<sizeof(JPG_Exif_IFD_begin))
1.80 paf 528: return;
1.91 paf 529: JPG_Exif_IFD_begin *start=(JPG_Exif_IFD_begin *)buf;
1.80 paf 530:
531: ushort directory_entry_count=endian_to_ushort(is_big, start->directory_entry_count);
532: for(int i=0; i<directory_entry_count; i++) {
533: if(reader.read(buf, sizeof(JPG_Exif_IFD_entry))<sizeof(JPG_Exif_IFD_entry))
534: return;
535:
1.118 misha 536: parse_IFD_entry(hash, is_big, reader, tiff_base, *(JPG_Exif_IFD_entry *)buf, gps);
1.80 paf 537: }
538: // then goes: LLLLLLLL Offset to next IFD [not going there]
539: }
540:
1.162 moko 541: static Value* parse_exif(Measure_reader& reader) {
1.91 paf 542: const char* buf;
1.80 paf 543:
1.175 moko 544: uint64_t tiff_base=reader.tell();
1.80 paf 545: if(reader.read(buf, sizeof(JPG_Exif_TIFF_header))<sizeof(JPG_Exif_TIFF_header))
546: return 0;
547:
548: JPG_Exif_TIFF_header *head=(JPG_Exif_TIFF_header *)buf;
549: bool is_big=head->byte_align_identifier[0]=='M'; // [M]otorola vs [I]ntel
550:
551: uint first_IFD_offset=endian_to_uint(is_big, head->first_IFD_offset);
1.174 moko 552: reader.seek(tiff_base+first_IFD_offset);
1.80 paf 553:
1.91 paf 554: VHash* vhash=new VHash;
1.80 paf 555:
556: // IFD
1.91 paf 557: parse_IFD(vhash->hash(), is_big, reader, tiff_base);
1.80 paf 558:
1.91 paf 559: return vhash;
1.80 paf 560: }
561:
1.163 moko 562: static Value* parse_xmp(Measure_reader& reader, ushort xmp_length, Measure_info &info) {
1.162 moko 563: const char* buf;
564: if(reader.read(buf, xmp_length)<xmp_length)
565: return 0;
1.163 moko 566:
567: String::C xmp = Charset::transcode(String::C(pa_strdup(buf, xmp_length), xmp_length), *info.xmp_charset, pa_thread_request().charsets.source());
568: return new VString(*new String(xmp, String::L_TAINTED));
1.162 moko 569: }
570:
571: static void measure_jpeg(const String& origin_string, Measure_reader& reader, Measure_info &info) {
1.2 paf 572: // JFIF format markers
1.80 paf 573: const uchar MARKER=0xFF;
574: const uchar CODE_SIZE_A=0xC0;
575: const uchar CODE_SIZE_B=0xC1;
576: const uchar CODE_SIZE_C=0xC2;
577: const uchar CODE_SIZE_D=0xC3;
1.162 moko 578: const uchar CODE_APP1=0xE1;
1.2 paf 579:
1.91 paf 580: const char* buf;
1.18 paf 581: const size_t prefix_size=2;
1.31 parser 582: if(reader.read(buf, prefix_size)<prefix_size)
1.155 moko 583: throw Exception(IMAGE_FORMAT, &origin_string, "not JPEG file - too small");
1.80 paf 584: uchar *signature=(uchar *)buf;
1.1 paf 585:
1.31 parser 586: if(!(signature[0]==0xFF && signature[1]==0xD8))
1.155 moko 587: throw Exception(IMAGE_FORMAT, &origin_string, "not JPEG file - wrong signature");
1.31 parser 588:
589: while(true) {
1.177 moko 590: uint64_t segment_base=reader.tell()+2/*marker,code*/;
1.31 parser 591: if(reader.read(buf, sizeof(JPG_Segment_head))<sizeof(JPG_Segment_head))
1.79 paf 592: break;
1.31 parser 593: JPG_Segment_head *head=(JPG_Segment_head *)buf;
594:
1.162 moko 595: // Verify that it's a valid segment.
1.31 parser 596: if(head->marker!=MARKER)
1.155 moko 597: throw Exception(IMAGE_FORMAT, &origin_string, "not JPEG file - marker not found");
1.79 paf 598:
1.162 moko 599: ushort segment_length=endian_to_ushort(true, head->length);
600:
1.79 paf 601: switch(head->code) {
1.162 moko 602: // http://dev.exiv2.org/projects/exiv2/wiki/The_Metadata_in_JPEG_files
603: case CODE_APP1:
604: {
605: const size_t EXIF_SIG_LEN=6; // Exif\0\0
606: const size_t XMP_SIG_LEN=29; // http://ns.adobe.com/xap/1.0/\0
607:
608: if(segment_length<EXIF_SIG_LEN+2 || reader.read(buf, EXIF_SIG_LEN)<EXIF_SIG_LEN)
609: break;
610: if(memcmp(buf, "Exif\0\0", EXIF_SIG_LEN)==0){
611: if(info.exif && !*info.exif) // backward compatibility: using first segment
612: *info.exif=parse_exif(reader);
613: break;
614: }
615:
616: if(memcmp(buf, "http:/", EXIF_SIG_LEN))
617: break;
618: if(segment_length<XMP_SIG_LEN+2 || reader.read(buf, XMP_SIG_LEN-EXIF_SIG_LEN)<XMP_SIG_LEN-EXIF_SIG_LEN)
619: break;
620: if(memcmp(buf, "/ns.adobe.com/xap/1.0/\0", XMP_SIG_LEN-EXIF_SIG_LEN)==0){
621: if(info.xmp && !*info.xmp) // backward compatibility: using first segment
1.163 moko 622: *info.xmp=parse_xmp(reader, segment_length - XMP_SIG_LEN - 2 /* segment_length */, info);
1.162 moko 623: }
624:
625: }
1.1 paf 626: break;
1.31 parser 627:
1.79 paf 628: case CODE_SIZE_A:
629: case CODE_SIZE_B:
630: case CODE_SIZE_C:
631: case CODE_SIZE_D:
632: {
633: // Segments that contain size info
634: if(reader.read(buf, sizeof(JPG_Size_segment_body))<sizeof(JPG_Size_segment_body))
1.155 moko 635: throw Exception(IMAGE_FORMAT, &origin_string, "not JPEG file - can not fully read Size segment");
1.79 paf 636: JPG_Size_segment_body *body=(JPG_Size_segment_body *)buf;
637:
1.162 moko 638: info.width=endian_to_ushort(true, body->width);
639: info.height=endian_to_ushort(true, body->height);
640: }
1.80 paf 641: return;
1.79 paf 642: };
643:
1.174 moko 644: reader.seek(segment_base + segment_length);
1.31 parser 645: }
646:
1.155 moko 647: throw Exception(IMAGE_FORMAT, &origin_string, "broken JPEG file - size frame not found");
1.1 paf 648: }
649:
1.169 moko 650: ///*********************************************** TIFF
651:
1.165 moko 652: static bool parse_tiff_IFD(bool is_big, Measure_reader& reader, Measure_info &info) {
653: const char* buf;
654: if(reader.read(buf, sizeof(JPG_Exif_IFD_begin))<sizeof(JPG_Exif_IFD_begin))
655: return false;
656: JPG_Exif_IFD_begin *start=(JPG_Exif_IFD_begin *)buf;
657:
658: ushort directory_entry_count=endian_to_ushort(is_big, start->directory_entry_count);
659: for(int i=0; i<directory_entry_count; i++) {
660: if(reader.read(buf, sizeof(JPG_Exif_IFD_entry))<sizeof(JPG_Exif_IFD_entry))
661: return false;
662:
663: JPG_Exif_IFD_entry *entry=(JPG_Exif_IFD_entry *)buf;
664: ushort entry_tag=endian_to_ushort(is_big, entry->tag);
665:
666: if(entry_tag == 256 || entry_tag == 257){
667: ushort entry_format=endian_to_ushort(is_big, entry->format);
668: if(entry_format != 3 && entry_format != 4 || endian_to_uint(is_big, entry->components_count) != 1)
669: return false;
670: 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);
1.178 moko 671: (entry_tag == 256) ? info.width=(short)value : info.height=(short)value;
1.165 moko 672: if(info.width && info.height)
673: return true;
674: }
675: }
676:
677: return false;
678: // then goes: LLLLLLLL Offset to next IFD [not going there]
679: }
680:
681: static void measure_tiff(const String& origin_string, Measure_reader& reader, Measure_info &info) {
682: const char* buf;
683:
684: if(reader.read(buf, sizeof(JPG_Exif_TIFF_header))<sizeof(JPG_Exif_TIFF_header))
685: throw Exception(IMAGE_FORMAT, &origin_string, "not TIFF file - too small");
686:
687: JPG_Exif_TIFF_header *head=(JPG_Exif_TIFF_header *)buf;
688:
689: if(strncmp(head->byte_align_identifier, "II", 2)!=0 && strncmp(head->byte_align_identifier, "MM", 2)!=0)
690: throw Exception(IMAGE_FORMAT, &origin_string, "not TIFF file - wrong signature");
691:
692: bool is_big=head->byte_align_identifier[0]=='M'; // [M]otorola vs [I]ntel
693:
694: if(endian_to_ushort(is_big, head->signature) != 42)
695: throw Exception(IMAGE_FORMAT, &origin_string, "not TIFF file - wrong signature");
696:
1.174 moko 697: reader.seek(endian_to_uint(is_big, head->first_IFD_offset));
1.165 moko 698: if(!parse_tiff_IFD(is_big, reader, info))
699: throw Exception(IMAGE_FORMAT, &origin_string, "broken TIFF file - size field entry not found");
700: }
701:
1.169 moko 702:
703: ///*********************************************** GIF
704:
705: struct GIF_Header {
706: char signature[3]; // 'GIF'
707: char version[3];
708: uchar width[2];
709: uchar height[2];
710: char dif;
711: char fonColor;
712: char nulls;
713: };
714:
1.164 moko 715: static void measure_gif(const String& origin_string, Measure_reader& reader, ushort& width, ushort& height) {
716:
717: const char* buf;
718: const size_t head_size=sizeof(GIF_Header);
719: if(reader.read(buf, head_size)<head_size)
720: throw Exception(IMAGE_FORMAT, &origin_string, "not GIF file - too small");
721: GIF_Header *head=(GIF_Header *)buf;
722:
723: if(strncmp(head->signature, "GIF", 3)!=0)
724: throw Exception(IMAGE_FORMAT, &origin_string, "not GIF file - wrong signature");
725:
726: width=endian_to_ushort(false, head->width);
727: height=endian_to_ushort(false, head->height);
728: }
729:
1.169 moko 730:
731: ///*********************************************** PNG
732:
733: struct PNG_Header {
734: char dummy[12];
735: char signature[4]; //< must be "IHDR"
736: uchar high_width[2]; //< image width high bytes [we ignore for now]
737: uchar width[2]; //< image width low bytes
738: uchar high_height[2]; //< image height high bytes [we ignore for now]
739: uchar height[4]; //< image height
740: };
741:
1.152 moko 742: static void measure_png(const String& origin_string, Measure_reader& reader, ushort& width, ushort& height) {
1.72 paf 743:
1.91 paf 744: const char* buf;
1.102 paf 745: const size_t head_size=sizeof(PNG_Header);
746: if(reader.read(buf, head_size)<head_size)
1.152 moko 747: throw Exception(IMAGE_FORMAT, &origin_string, "not PNG file - too small");
1.72 paf 748: PNG_Header *head=(PNG_Header *)buf;
749:
750: if(strncmp(head->signature, "IHDR", 4)!=0)
1.152 moko 751: throw Exception(IMAGE_FORMAT, &origin_string, "not PNG file - wrong signature");
1.72 paf 752:
1.80 paf 753: width=endian_to_ushort(true, head->width);
754: height=endian_to_ushort(true, head->height);
1.72 paf 755: }
756:
1.169 moko 757:
758: ///*********************************************** BMP
759:
760: struct BMP_Header {
761: char signature[2]; // 'BM'
762: uchar file_size[4];
763: uchar reserved[4];
764: uchar bitmap_offset[4];
765: uchar header_size[4];
766: uchar width[2];
767: uchar high_width[2]; //< image width high bytes [we ignore for now]
768: uchar height[2];
769: uchar high_height[2]; //< image height high bytes [we ignore for now]
770: };
771:
1.164 moko 772: static void measure_bmp(const String& origin_string, Measure_reader& reader, ushort& width, ushort& height) {
773:
774: const char* buf;
775: const size_t head_size=sizeof(BMP_Header);
776: if(reader.read(buf, head_size)<head_size)
777: throw Exception(IMAGE_FORMAT, &origin_string, "not BMP file - too small");
778: BMP_Header *head=(BMP_Header *)buf;
779:
780: if(strncmp(head->signature, "BM", 2)!=0)
781: throw Exception(IMAGE_FORMAT, &origin_string, "not BMP file - wrong signature");
782:
1.174 moko 783: if((uint)reader.length() != endian_to_uint(false, head->file_size))
1.164 moko 784: throw Exception(IMAGE_FORMAT, &origin_string, "not BMP file - length header and file size do not match");
785:
786: width=endian_to_ushort(false, head->width);
787: height=endian_to_ushort(false, head->height);
788: }
789:
1.168 moko 790:
1.169 moko 791: ///*********************************************** WEBP
792:
793: struct WEBP_Header {
794: char signature_riff[4]; // 'RIFF'
795: uchar file_size[4];
796: char signature[4]; // 'WEBP'
797: char format[4]; // 'VP8 ' or 'VP8L' or 'VP8X'
798: };
799:
800: struct WEBP_VP8_Chunk {
801: uchar size[4];
802: char tag[3];
803: uchar signature[3]; // 0x9D 0x01 0x2A
804: uchar width[2]; // 14 bits each
805: uchar height[2]; // 14 bits each
806: };
807:
808: struct WEBP_VP8L_Chunk {
809: uchar size[4];
810: char signature; // 0x2F
811: uchar width_height[4]; // 14 bits each
812: };
813:
814: struct WEBP_X_Chunk {
815: uchar size[4];
816: char reserved[4];
817: uchar width[3];
818: uchar height[3];
819: };
820:
1.168 moko 821: static void measure_webp(const String& origin_string, Measure_reader& reader, ushort& width, ushort& height) {
822: const char* buf;
823:
824: if(reader.read(buf, sizeof(WEBP_Header))<sizeof(WEBP_Header))
825: throw Exception(IMAGE_FORMAT, &origin_string, "not WEBP file - too small");
826:
827: WEBP_Header *head=(WEBP_Header *)buf;
828:
829: if(strncmp(head->signature_riff, "RIFF", 4)!=0 || strncmp(head->signature, "WEBP", 4)!=0)
830: throw Exception(IMAGE_FORMAT, &origin_string, "not WEBP file - wrong signature");
831:
832: if(strncmp(head->format, "VP8 ", 4)==0){
833: if(reader.read(buf, sizeof(WEBP_VP8_Chunk))<sizeof(WEBP_VP8_Chunk))
834: throw Exception(IMAGE_FORMAT, &origin_string, "broken WEBP file - too small VP8 chunk");
835:
836: WEBP_VP8_Chunk *chunk=(WEBP_VP8_Chunk *)buf;
837: if (chunk->signature[0] != 0x9D || chunk->signature[1] != 0x01 || chunk->signature[2] != 0x2A)
838: throw Exception(IMAGE_FORMAT, &origin_string, "broken WEBP file - wrong VP8 chunk signature");
839:
840: width=endian_to_ushort(false, chunk->width) & 0x3FFF;
841: height=endian_to_ushort(false, chunk->height) & 0x3FFF;
842: } else if(strncmp(head->format, "VP8L", 4)==0){
843: if(reader.read(buf, sizeof(WEBP_VP8L_Chunk))<sizeof(WEBP_VP8L_Chunk))
844: throw Exception(IMAGE_FORMAT, &origin_string, "broken WEBP file - too small VP8L chunk");
845:
846: WEBP_VP8L_Chunk *chunk=(WEBP_VP8L_Chunk *)buf;
847: if(chunk->signature != 0x2F)
848: throw Exception(IMAGE_FORMAT, &origin_string, "broken WEBP file - wrong VP8L chunk signature");
849:
850: uint wh=endian_to_uint(false, chunk->width_height);
851: width=(wh & 0x3FFF) + 1;
852: height=((wh >> 14) & 0x3FFF) + 1;
853: } else if (strncmp(head->format, "VP8X", 4)==0){
854: if(reader.read(buf, sizeof(WEBP_X_Chunk))<sizeof(WEBP_X_Chunk))
855: throw Exception(IMAGE_FORMAT, &origin_string, "broken WEBP file - too small VP8X chunk");
856:
857: WEBP_X_Chunk *chunk=(WEBP_X_Chunk *)buf;
858:
859: width=endian_to_ushort(false, chunk->width) + 1; // we ignore third byte to simplify code
860: height=endian_to_ushort(false, chunk->height) + 1; // we ignore third byte to simplify code
861: } else throw Exception(IMAGE_FORMAT, &origin_string, "broken WEBP file - invalid chunk signature");
862: }
863:
1.170 moko 864:
865: ///*********************************************** MP4
866:
867: struct MP4_Header {
868: uchar size[4];
869: char signature[4]; // 'ftyp' in first chunk
870: };
871:
1.173 moko 872: struct MP4_ExtSize {
873: uchar high[4];
874: uchar low[4];
875: };
876:
877: struct MP4_Tkhd {
878: uchar width[4];
879: uchar height[4];
880: };
881:
1.174 moko 882: static bool measure_mp4(const String& origin_string, Measure_reader& reader, ushort& width, ushort& height, uint64_t anext, const char* lastTkhd=NULL) {
1.170 moko 883: for(bool first=anext==0;;){
884: const char* buf;
1.174 moko 885: uint64_t next=reader.tell();
1.173 moko 886:
887: if(reader.read(buf, sizeof(MP4_Header))<sizeof(MP4_Header))
1.172 moko 888: throw Exception(IMAGE_FORMAT, &origin_string, first ? "not MP4 file - too small" : "broken MP4 file - truncated chunk header");
1.170 moko 889:
890: MP4_Header *head=(MP4_Header *)buf;
1.174 moko 891: uint64_t size=endian_to_uint(true, head->size);
1.170 moko 892:
1.173 moko 893: if(size==1){
894: if(reader.read(buf, sizeof(MP4_ExtSize))<sizeof(MP4_ExtSize))
895: throw Exception(IMAGE_FORMAT, &origin_string, "broken MP4 file - truncated chunk extended size header");
896: MP4_ExtSize *ext_size=(MP4_ExtSize *)buf;
1.174 moko 897: size=((uint64_t)endian_to_uint(true, ext_size->high) << 32) + endian_to_uint(true, ext_size->low);
1.173 moko 898: }
899: next+=size;
1.170 moko 900:
901: if(first){
902: if(strncmp(head->signature, "ftyp", 4)!=0)
903: throw Exception(IMAGE_FORMAT, &origin_string, "not MP4 file - wrong signature");
904: first=false;
1.174 moko 905: anext=reader.length(); // to avoid reading beyond EOF
1.170 moko 906: } else if(strncmp(head->signature, "moov", 4)==0 || strncmp(head->signature, "mdia", 4)==0 || strncmp(head->signature, "trak", 4)==0) {
907: if(measure_mp4(origin_string, reader, width, height, next, lastTkhd))
908: return true;
909: } else if(strncmp(head->signature, "tkhd", 4)==0) {
910: if(size>8){
1.174 moko 911: reader.seek(next-8);
1.173 moko 912: if(reader.read(lastTkhd, sizeof(MP4_Tkhd))<sizeof(MP4_Tkhd))
1.170 moko 913: throw Exception(IMAGE_FORMAT, &origin_string, "broken MP4 file - bad tkhd chunk");
914: }
915: } else if (strncmp(head->signature, "hdlr", 4)==0) {
916: if(size>12){
917: const char* hdlr;
918: if(reader.read(hdlr, 12)<12)
919: throw Exception(IMAGE_FORMAT, &origin_string, "broken MP4 file - bad hdlr chunk");
1.173 moko 920: if(lastTkhd && strncmp(hdlr+8, "vide", 4)==0) {
921: MP4_Tkhd *tkhd=(MP4_Tkhd *)lastTkhd;
922: width=endian_to_ushort(true, tkhd->width);
923: height=endian_to_ushort(true, tkhd->height);
1.170 moko 924: return true;
925: }
926: }
927: }
928: if(anext && next>=anext)
929: break;
1.174 moko 930: reader.seek(next);
1.170 moko 931: }
932: return false;
933: }
934:
935: static void measure_mp4(const String& origin_string, Measure_reader& reader, ushort& width, ushort& height) {
936: if(!measure_mp4(origin_string, reader, width, height, 0))
937: throw Exception(IMAGE_FORMAT, &origin_string, "unsupported MP4 file - size not found");
938: }
939:
1.169 moko 940: ///*********************************************** measure center
1.1 paf 941:
1.162 moko 942: static void measure(const String& file_name, Measure_reader& reader, Measure_info &info) {
1.128 misha 943: const char* file_name_cstr=file_name.taint_cstr(String::L_FILE_SPEC);
1.91 paf 944: if(const char* cext=strrchr(file_name_cstr, '.')) {
1.1 paf 945: cext++;
946: if(strcasecmp(cext, "GIF")==0)
1.162 moko 947: measure_gif(file_name, reader, info.width, info.height);
1.165 moko 948: else if(strcasecmp(cext, "JPG")==0 || strcasecmp(cext, "JPEG")==0)
1.162 moko 949: measure_jpeg(file_name, reader, info);
1.72 paf 950: else if(strcasecmp(cext, "PNG")==0)
1.162 moko 951: measure_png(file_name, reader, info.width, info.height);
1.164 moko 952: else if(strcasecmp(cext, "BMP")==0)
953: measure_bmp(file_name, reader, info.width, info.height);
1.168 moko 954: else if(strcasecmp(cext, "WEBP")==0)
955: measure_webp(file_name, reader, info.width, info.height);
1.165 moko 956: else if(strcasecmp(cext, "TIF")==0 || strcasecmp(cext, "TIFF")==0)
957: measure_tiff(file_name, reader, info);
1.171 moko 958: else if(strcasecmp(cext, "MP4")==0 || strcasecmp(cext, "MOV")==0)
1.181 ! moko 959: if(info.video)
! 960: measure_mp4(file_name, reader, info.width, info.height);
! 961: else
! 962: throw Exception(IMAGE_FORMAT, &file_name, "handling disabled for file name extension '%s'", cext);
1.1 paf 963: else
1.181 ! moko 964: throw Exception(IMAGE_FORMAT, &file_name, "unhandled file name extension '%s'", cext);
1.1 paf 965: } else
1.181 ! moko 966: throw Exception(IMAGE_FORMAT, &file_name, "can not determine file type - no file name extension");
1.1 paf 967: }
968:
1.77 paf 969: // methods
1.1 paf 970:
1.152 moko 971: static void file_measure_action(struct stat& /*finfo*/, int f, const String& file_spec, void *context) {
972: Measure_file_reader reader(f, file_spec);
1.162 moko 973: measure(file_spec, reader, *static_cast<Measure_info *>(context));
1.1 paf 974: }
975:
1.91 paf 976: static void _measure(Request& r, MethodParams& params) {
977: Value& data=params.as_no_junction(0, "data must not be code");
1.1 paf 978:
1.91 paf 979: Value* exif=0;
1.162 moko 980: Value* xmp=0;
1.181 ! moko 981: Measure_info info={ 0, 0, 0, 0, &pa_UTF8_charset, false };
1.163 moko 982:
983: if(params.count()>1)
984: if(HashStringValue* options=params.as_hash(1, "methods options")) {
985: int valid_options=0;
986: for(HashStringValue::Iterator i(*options); i; i.next() ){
987: String::Body key=i.key();
988: Value* value=i.value();
989: if(key == "exif") {
990: if(r.process(*value).as_bool())
991: info.exif=&exif;
992: valid_options++;
993: }
994: if(key == "xmp") {
995: if(r.process(*value).as_bool())
996: info.xmp=&xmp;
997: valid_options++;
998: }
999: if(key == "xmp-charset") {
1000: info.xmp_charset=&pa_charsets.get(value->as_string());
1001: valid_options++;
1002: }
1.181 ! moko 1003: if(key == "video") {
! 1004: info.video=r.process(*value).as_bool();
! 1005: valid_options++;
! 1006: }
1.163 moko 1007: }
1008: if(valid_options!=options->count())
1009: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1010: }
1.162 moko 1011:
1.91 paf 1012: const String* file_name;
1.162 moko 1013:
1014: if(file_name=data.get_string()) {
1.167 moko 1015: file_read_action_under_lock(r.full_disk_path(*file_name), "measure", file_measure_action, &info);
1.1 paf 1016: } else {
1.129 misha 1017: VFile* vfile=data.as_vfile(String::L_AS_IS);
1.91 paf 1018: file_name=&vfile->fields().get(name_name)->as_string();
1.162 moko 1019: Measure_buf_reader reader(vfile->value_ptr(), vfile->value_size(), *file_name);
1020: measure(*file_name, reader, info);
1.1 paf 1021: }
1022:
1.162 moko 1023: GET_SELF(r, VImage).set(file_name, info.width, info.height, 0, exif, xmp);
1.1 paf 1024: }
1025:
1.161 moko 1026: static void append_attrib_pair(String &tag, String::Body key, Value* value){
1027: // skip border attribute with empty value
1028: if(key=="border" && !value->is_defined())
1.4 paf 1029: return;
1030:
1.133 misha 1031: // src="a.gif" width="123" ismap[=-1]
1.161 moko 1032: tag << " " << key;
1.91 paf 1033: if(value->is_string() || value->as_int()>=0)
1.161 moko 1034: tag << "=\"" << value->as_string() << "\"";
1.3 paf 1035: }
1.161 moko 1036:
1.91 paf 1037: static void _html(Request& r, MethodParams& params) {
1038: String tag;
1.3 paf 1039: tag << "<img";
1.4 paf 1040:
1.91 paf 1041: const HashStringValue& fields=GET_SELF(r, VImage).fields();
1042: HashStringValue* attribs=0;
1.4 paf 1043:
1.91 paf 1044: if(params.count()) {
1.69 paf 1045: // for backward compatibility: someday was ^html{}
1.154 moko 1046: Value& vattribs=r.process(params[0]);
1.145 moko 1047: if(!vattribs.is_string()) { // allow empty
1.100 paf 1048: if((attribs=vattribs.get_hash())) {
1.161 moko 1049: for(HashStringValue::Iterator i(*attribs); i; i.next() )
1050: append_attrib_pair(tag, i.key(), i.value());
1.39 parser 1051: } else
1.155 moko 1052: throw Exception(PARSER_RUNTIME, 0, "attributes must be hash");
1.145 moko 1053: }
1.39 parser 1054: }
1.4 paf 1055:
1.161 moko 1056: for(HashStringValue::Iterator i(fields); i; i.next() ){
1057: String::Body key=i.key();
1058: // skip user-specified attributes
1059: if(attribs && attribs->get(key))
1060: continue;
1061: // allow only html attributes (to exclude exif, line-*)
1062: if(key=="src" || key=="width" || key=="height" || key=="border")
1063: append_attrib_pair(tag, key, i.value());
1.91 paf 1064: }
1.161 moko 1065:
1.6 paf 1066: tag << " />";
1.157 moko 1067: r.write(tag);
1.3 paf 1068: }
1.8 paf 1069:
1.68 paf 1070: /// @test wrap FILE to auto-object
1.155 moko 1071: static gdImage* load(Request& r, const String& file_name){
1.167 moko 1072: const char* file_name_cstr=r.full_disk_path(file_name).taint_cstr(String::L_FILE_SPEC);
1.159 moko 1073: if(FILE *f=pa_fopen(file_name_cstr, "rb")) {
1.91 paf 1074: gdImage* image=new gdImage;
1075: bool ok=image->CreateFromGif(f);
1.16 paf 1076: fclose(f);
1.23 paf 1077: if(!ok)
1.155 moko 1078: throw Exception(IMAGE_FORMAT, &file_name, "is not in GIF format");
1.91 paf 1079: return image;
1.16 paf 1080: } else {
1.155 moko 1081: throw Exception("file.missing", 0, "can not open '%s'", file_name_cstr);
1.16 paf 1082: }
1083: }
1084:
1085:
1.91 paf 1086: static void _load(Request& r, MethodParams& params) {
1.116 misha 1087: const String& file_name=params.as_string(0, FILE_NAME_MUST_NOT_BE_CODE);
1.6 paf 1088:
1.91 paf 1089: gdImage* image=load(r, file_name);
1090: GET_SELF(r, VImage).set(&file_name, image->SX(), image->SY(), image);
1.6 paf 1091: }
1092:
1.91 paf 1093: static void _create(Request& r, MethodParams& params) {
1094: int width=params.as_int(0, "width must be int", r);
1095: int height=params.as_int(1, "height must be int", r);
1.8 paf 1096: int bgcolor_value=0xffFFff;
1.91 paf 1097: if(params.count()>2)
1098: bgcolor_value=params.as_int(2, "color must be int", r);
1099: gdImage* image=new gdImage;
1100: image->Create(width, height);
1101: image->FilledRectangle(0, 0, width-1, height-1, image->Color(bgcolor_value));
1102: GET_SELF(r, VImage).set(0, width, height, image);
1.6 paf 1103: }
1104:
1.91 paf 1105: static void _gif(Request& r, MethodParams& params) {
1.108 paf 1106: gdImage& image=GET_SELF(r, VImage).image();
1.6 paf 1107:
1.138 misha 1108: const String *file_name=params.count()>0?¶ms.as_string(0, FILE_NAME_MUST_BE_STRING):0;
1.10 paf 1109:
1.108 paf 1110: gdBuf buf=image.Gif();
1.6 paf 1111:
1.91 paf 1112: VFile& vfile=*new VFile;
1.137 misha 1113:
1.142 moko 1114: vfile.set_binary(false/*not tainted*/, (const char *)buf.ptr, buf.size, file_name, new VString(*new String("image/gif")));
1.137 misha 1115:
1.157 moko 1116: r.write(vfile);
1.6 paf 1117: }
1118:
1.91 paf 1119: static void _line(Request& r, MethodParams& params) {
1.108 paf 1120: gdImage& image=GET_SELF(r, VImage).image();
1.12 paf 1121:
1.108 paf 1122: image.Line(
1.91 paf 1123: params.as_int(0, "x0 must be int", r),
1124: params.as_int(1, "y0 must be int", r),
1125: params.as_int(2, "x1 must be int", r),
1126: params.as_int(3, "y1 must be int", r),
1.108 paf 1127: image.Color(params.as_int(4, "color must be int", r)));
1.13 paf 1128: }
1129:
1.91 paf 1130: static void _fill(Request& r, MethodParams& params) {
1.108 paf 1131: gdImage& image=GET_SELF(r, VImage).image();
1.12 paf 1132:
1.108 paf 1133: image.Fill(
1.91 paf 1134: params.as_int(0, "x must be int", r),
1135: params.as_int(1, "y must be int", r),
1.108 paf 1136: image.Color(params.as_int(2, "color must be int", r)));
1.13 paf 1137: }
1138:
1.91 paf 1139: static void _rectangle(Request& r, MethodParams& params) {
1.108 paf 1140: gdImage& image=GET_SELF(r, VImage).image();
1.13 paf 1141:
1.108 paf 1142: image.Rectangle(
1.91 paf 1143: params.as_int(0, "x0 must be int", r),
1144: params.as_int(1, "y0 must be int", r),
1145: params.as_int(2, "x1 must be int", r),
1146: params.as_int(3, "y1 must be int", r),
1.108 paf 1147: image.Color(params.as_int(4, "color must be int", r)));
1.13 paf 1148: }
1149:
1.91 paf 1150: static void _bar(Request& r, MethodParams& params) {
1.108 paf 1151: gdImage& image=GET_SELF(r, VImage).image();
1.13 paf 1152:
1.108 paf 1153: image.FilledRectangle(
1.91 paf 1154: params.as_int(0, "x0 must be int", r),
1155: params.as_int(1, "y0 must be int", r),
1156: params.as_int(2, "x1 must be int", r),
1157: params.as_int(3, "y1 must be int", r),
1.108 paf 1158: image.Color(params.as_int(4, "color must be int", r)));
1.13 paf 1159: }
1160:
1.44 parser 1161: #ifndef DOXYGEN
1.155 moko 1162: static void add_point(Table::element_type row, gdImage::Point **p) {
1.110 paf 1163: if(row->count()!=2)
1.155 moko 1164: throw Exception(0, 0, "coordinates table must contain two columns: x and y values");
1.91 paf 1165: (**p).x=row->get(0)->as_int();
1166: (**p).y=row->get(1)->as_int();
1.44 parser 1167: (*p)++;
1168: }
1169: #endif
1.135 misha 1170: #ifndef DOXYGEN
1.155 moko 1171: static void add_point(int x, int y, gdImage::Point **p) {
1.135 misha 1172: (**p).x=x;
1173: (**p).y=y;
1174: (*p)++;
1175: }
1176: #endif
1.91 paf 1177: static void _replace(Request& r, MethodParams& params) {
1.135 misha 1178: int src_color=params.as_int(0, "src color must be int", r);
1179: int dest_color=params.as_int(1, "dest color must be int", r);
1180:
1.108 paf 1181: gdImage& image=GET_SELF(r, VImage).image();
1.13 paf 1182:
1.135 misha 1183: gdImage::Point* all_p=0;
1184: size_t count=0;
1185: if(params.count() == 3){
1.180 moko 1186: if(Table* table=params.as_table(2, "coordinates")){
1187: count=table->count();
1188: all_p=new(PointerFreeGC) gdImage::Point[count];
1189: gdImage::Point* add_p=all_p;
1190: table->for_each(add_point, &add_p);
1191: }
1.135 misha 1192: } else {
1193: int max_x=image.SX()-1;
1194: int max_y=image.SY()-1;
1195: if(max_x > 0 && max_y > 0){
1196: count=4;
1197: all_p=new(PointerFreeGC) gdImage::Point[count];
1198: gdImage::Point* add_p=all_p;
1199: add_point(0, 0, &add_p);
1200: add_point(max_x, 0, &add_p);
1201: add_point(max_x, max_y, &add_p);
1202: add_point(0, max_y, &add_p);
1203: }
1204: }
1.13 paf 1205:
1.135 misha 1206: if(count)
1207: image.FilledPolygonReplaceColor(all_p, count, image.Color(src_color), image.Color(dest_color));
1.13 paf 1208: }
1209:
1.91 paf 1210: static void _polyline(Request& r, MethodParams& params) {
1.108 paf 1211: gdImage& image=GET_SELF(r, VImage).image();
1.13 paf 1212:
1.180 moko 1213: if(Table* table=params.as_table(1, "coordinates")){
1214: gdImage::Point* all_p=new(PointerFreeGC) gdImage::Point[table->count()];
1215: gdImage::Point *add_p=all_p;
1216: table->for_each(add_point, &add_p);
1217: image.Polygon(all_p, table->count(), image.Color(params.as_int(0, "color must be int", r)), false/*not closed*/);
1218: }
1.44 parser 1219: }
1220:
1.91 paf 1221: static void _polygon(Request& r, MethodParams& params) {
1.108 paf 1222: gdImage& image=GET_SELF(r, VImage).image();
1.13 paf 1223:
1.180 moko 1224: if(Table* table=(Table*)params.as_table(1, "coordinates")){
1225: gdImage::Point* all_p=new(PointerFreeGC) gdImage::Point[table->count()];
1226: gdImage::Point *add_p=all_p;
1227: table->for_each(add_point, &add_p);
1228: image.Polygon(all_p, table->count(), image.Color(params.as_int(0, "color must be int", r)));
1229: }
1.13 paf 1230: }
1231:
1.91 paf 1232: static void _polybar(Request& r, MethodParams& params) {
1.108 paf 1233: gdImage& image=GET_SELF(r, VImage).image();
1.13 paf 1234:
1.180 moko 1235: if(Table* table=(Table*)params.as_table(1, "coordinates")){
1236: gdImage::Point* all_p=new(PointerFreeGC) gdImage::Point[table->count()];
1237: gdImage::Point *add_p=all_p;
1238: table->for_each(add_point, &add_p);
1239: image.FilledPolygon(all_p, table->count(), image.Color(params.as_int(0, "color must be int", r)));
1240: }
1.12 paf 1241: }
1242:
1.16 paf 1243: // font
1244:
1.85 paf 1245: #define Y(y)(y+index*height)
1.21 paf 1246:
1.91 paf 1247: // Font class
1248:
1.155 moko 1249: Font::Font(Charset& asource_charset, const String& aalphabet, gdImage* aifont, int aheight, int amonospace, int aspacebarspace, int aletterspacing):
1.158 moko 1250: letterspacing(aletterspacing),
1.132 misha 1251: height(aheight),
1252: monospace(amonospace),
1253: spacebarspace(aspacebarspace),
1.100 paf 1254: ifont(aifont),
1.158 moko 1255: alphabet(aalphabet),
1256: fsource_charset(asource_charset){
1.132 misha 1257:
1258: if(fsource_charset.isUTF8()){
1259: size_t index=0;
1260: for(UTF8_string_iterator i(alphabet); i.has_next(); )
1261: fletter2index.put_dont_replace(i.next(), index++);
1262: }
1.91 paf 1263: }
1264:
1265: /* ******************************** char ********************************** */
1266:
1267: size_t Font::index_of(char ch) {
1268: if(ch==' ') return STRING_NOT_FOUND;
1269: return alphabet.pos(ch);
1270: }
1271:
1.132 misha 1272: size_t Font::index_of(XMLCh ch) {
1273: if(ch==' ') return STRING_NOT_FOUND;
1274: return fletter2index.get(ch);
1275: }
1276:
1.91 paf 1277: int Font::index_width(size_t index) {
1278: if(index==STRING_NOT_FOUND)
1279: return spacebarspace;
1280: int tr=ifont->GetTransparent();
1281: for(int x=ifont->SX()-1; x>=0; x--) {
1282: for(int y=0; y<height; y++)
1283: if(ifont->GetPixel(x, Y(y))!=tr)
1284: return x+1;
1.16 paf 1285: }
1.91 paf 1286: return 0;
1287: }
1288:
1.108 paf 1289: void Font::index_display(gdImage& image, int x, int y, size_t index){
1.91 paf 1290: if(index!=STRING_NOT_FOUND)
1.108 paf 1291: ifont->Copy(image, x, y, 0, Y(0), index_width(index), height);
1.91 paf 1292: }
1293:
1294: /* ******************************** string ********************************** */
1295:
1296: int Font::step_width(int index) {
1.125 misha 1297: return letterspacing + (monospace ? monospace : index_width(index));
1.91 paf 1298: }
1299:
1300: // counts trailing letter_spacing, consider this OK. useful for contiuations
1301: int Font::string_width(const String& s){
1302: const char* cstr=s.cstr();
1303: int result=0;
1.132 misha 1304:
1305: if(fsource_charset.isUTF8()){
1306: for(UTF8_string_iterator i(s); i.has_next(); )
1307: result+=step_width(index_of(i.next()));
1308: } else {
1309: for(const char* current=cstr; *current; current++)
1310: result+=step_width(index_of(*current));
1311: }
1312:
1.91 paf 1313: return result;
1314: }
1315:
1.108 paf 1316: void Font::string_display(gdImage& image, int x, int y, const String& s){
1.91 paf 1317: const char* cstr=s.cstr();
1.132 misha 1318:
1319: if(fsource_charset.isUTF8()){
1320: for(UTF8_string_iterator i(s); i.has_next(); ){
1321: size_t index=index_of(i.next());
1322: index_display(image, x, y, index);
1323: x+=step_width(index);
1324: }
1325: } else {
1326: for(const char* current=cstr; *current; current++) {
1327: size_t index=index_of(*current);
1328: index_display(image, x, y, index);
1329: x+=step_width(index);
1330: }
1.87 paf 1331: }
1.91 paf 1332: }
1.87 paf 1333:
1.91 paf 1334: //
1.35 parser 1335:
1.16 paf 1336:
1.91 paf 1337: static void _font(Request& r, MethodParams& params) {
1338: const String& alphabet=params.as_string(0, "alphabet must not be code");
1.131 misha 1339: size_t alphabet_length=alphabet.length(r.charsets.source());
1340: if(!alphabet_length)
1.155 moko 1341: throw Exception(PARSER_RUNTIME, 0, "alphabet must not be empty");
1.84 paf 1342:
1.125 misha 1343: gdImage* image=load(r, params.as_string(1, FILE_NAME_MUST_NOT_BE_CODE));
1344:
1.126 misha 1345: int spacebar_width=image->SX();
1.125 misha 1346: int monospace_width=0; // proportional
1347: int letter_spacing=1;
1348: if(params.count()>2){
1.144 moko 1349: if(HashStringValue* options=params[2].get_hash()){
1.125 misha 1350: // third option is hash
1351: if(params.count()>3)
1.144 moko 1352: throw Exception(PARSER_RUNTIME, 0, "too many params were specified");
1.125 misha 1353: int valid_options=0;
1354: if(Value* vspacebar_width=options->get(spacebar_width_name)){
1355: valid_options++;
1.153 moko 1356: spacebar_width=r.process(*vspacebar_width).as_int();
1.125 misha 1357: }
1358: if(Value* vmonospace_width=options->get(monospace_width_name)){
1359: valid_options++;
1.153 moko 1360: monospace_width=r.process(*vmonospace_width).as_int();
1.125 misha 1361: if(!monospace_width)
1362: monospace_width=image->SX();
1363: }
1364: if(Value* vletter_spacing=options->get(letter_spacing_name)){
1365: valid_options++;
1.153 moko 1366: letter_spacing=r.process(*vletter_spacing).as_int();
1.125 misha 1367: }
1368: if(valid_options!=options->count())
1.134 misha 1369: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.125 misha 1370: } else {
1371: // backward
1.144 moko 1372: spacebar_width=params.as_int(2, "param must be int or hash", r);
1.125 misha 1373: if(params.count()>3) {
1374: monospace_width=params.as_int(3, "monospace_width must be int", r);
1375: if(!monospace_width)
1376: monospace_width=image->SX();
1377: }
1378: }
1379: }
1380:
1.131 misha 1381: if(int remainder=image->SY() % alphabet_length)
1.155 moko 1382: 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 1383:
1.155 moko 1384: 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 1385: }
1386:
1.91 paf 1387: static void _text(Request& r, MethodParams& params) {
1388: int x=params.as_int(0, "x must be int", r);
1389: int y=params.as_int(1, "y must be int", r);
1390: const String& s=params.as_string(2, "text must not be code");
1.16 paf 1391:
1.91 paf 1392: VImage& vimage=GET_SELF(r, VImage);
1.108 paf 1393: vimage.font().string_display(vimage.image(), x, y, s);
1.16 paf 1394: }
1395:
1.91 paf 1396: static void _length(Request& r, MethodParams& params) {
1397: const String& s=params.as_string(0, "text must not be code");
1.47 parser 1398:
1.91 paf 1399: VImage& vimage=GET_SELF(r, VImage);
1.157 moko 1400: r.write(*new VInt(vimage.font().string_width(s)));
1.47 parser 1401: }
1402:
1.91 paf 1403: static void _arc(Request& r, MethodParams& params) {
1.108 paf 1404: gdImage& image=GET_SELF(r, VImage).image();
1.48 parser 1405:
1.108 paf 1406: image.Arc(
1.91 paf 1407: params.as_int(0, "center_x must be int", r),
1408: params.as_int(1, "center_y must be int", r),
1409: params.as_int(2, "width must be int", r),
1410: params.as_int(3, "height must be int", r),
1411: params.as_int(4, "start degrees must be int", r),
1412: params.as_int(5, "end degrees must be int", r),
1.108 paf 1413: image.Color(params.as_int(6, "cx must be int", r)));
1.48 parser 1414: }
1415:
1.91 paf 1416: static void _sector(Request& r, MethodParams& params) {
1.108 paf 1417: gdImage& image=GET_SELF(r, VImage).image();
1.49 parser 1418:
1.108 paf 1419: image.Sector(
1.91 paf 1420: params.as_int(0, "center_x must be int", r),
1421: params.as_int(1, "center_y must be int", r),
1422: params.as_int(2, "width must be int", r),
1423: params.as_int(3, "height must be int", r),
1424: params.as_int(4, "start degrees must be int", r),
1425: params.as_int(5, "end degrees must be int", r),
1.108 paf 1426: image.Color(params.as_int(6, "color must be int", r)));
1.49 parser 1427: }
1428:
1.91 paf 1429: static void _circle(Request& r, MethodParams& params) {
1.108 paf 1430: gdImage& image=GET_SELF(r, VImage).image();
1.48 parser 1431:
1.91 paf 1432: int size=params.as_int(2, "radius must be int", r)*2;
1.108 paf 1433: image.Arc(
1.91 paf 1434: params.as_int(0, "center_x must be int", r),
1435: params.as_int(1, "center_y must be int", r),
1.50 parser 1436: size, //w
1437: size, //h
1.48 parser 1438: 0, //s
1439: 360, //e
1.108 paf 1440: image.Color(params.as_int(3, "color must be int", r)));
1.48 parser 1441: }
1442:
1.108 paf 1443: gdImage& as_image(MethodParams& params, int index, const char* msg) {
1.91 paf 1444: Value& value=params.as_no_junction(index, msg);
1.53 parser 1445:
1.130 misha 1446: if(Value* vimage=value.as(VIMAGE_TYPE)) {
1.108 paf 1447: return static_cast<VImage *>(vimage)->image();
1.75 paf 1448: } else
1.155 moko 1449: throw Exception(PARSER_RUNTIME, 0, msg);
1.53 parser 1450: }
1451:
1.91 paf 1452: static void _copy(Request& r, MethodParams& params) {
1.108 paf 1453: gdImage& dest=GET_SELF(r, VImage).image();
1.53 parser 1454:
1.108 paf 1455: gdImage& src=as_image(params, 0, "src must be image");
1.53 parser 1456:
1.91 paf 1457: int sx=params.as_int(1, "src_x must be int", r);
1458: int sy=params.as_int(2, "src_y must be int", r);
1459: int sw=params.as_int(3, "src_w must be int", r);
1460: int sh=params.as_int(4, "src_h must be int", r);
1461: int dx=params.as_int(5, "dest_x must be int", r);
1462: int dy=params.as_int(6, "dest_y must be int", r);
1463: if(params.count()>1+2+2+2) {
1464: int dw=params.as_int(1+2+2+2, "dest_w must be int", r);
1465: int dh=(int)(params.count()>1+2+2+2+1?
1466: params.as_int(1+2+2+2+1, "dest_h must be int", r):sh*(((double)dw)/((double)sw)));
1467: int tolerance=params.count()>1+2+2+2+2?
1468: params.as_int(1+2+2+2+2, "tolerance must be int", r):150;
1.53 parser 1469:
1.108 paf 1470: src.CopyResampled(dest, dx, dy, sx, sy, dw, dh, sw, sh, tolerance);
1.53 parser 1471: } else
1.108 paf 1472: src.Copy(dest, dx, dy, sx, sy, sw, sh);
1473: }
1474:
1475: static void _pixel(Request& r, MethodParams& params) {
1476: gdImage& image=GET_SELF(r, VImage).image();
1477:
1.109 paf 1478: int x=params.as_int(0, "x must be int", r);
1479: int y=params.as_int(1, "y must be int", r);
1480:
1481: if(params.count()>2) {
1482: image.SetPixel(x, y,
1483: image.Color(params.as_int(2, "color must be int", r)));
1484: } else
1.157 moko 1485: r.write(*new VInt(image.DecodeColor(image.GetPixel(x, y))));
1.53 parser 1486: }
1487:
1488:
1.22 paf 1489: // constructor
1490:
1.91 paf 1491: MImage::MImage(): Methoded("image") {
1.1 paf 1492: // ^image:measure[DATA]
1.163 moko 1493: // ^image:measure[DATA; $.exif(false) $.xmp(false) $.xmp-charset[UTF-8] ]
1494: add_native_method("measure", Method::CT_DYNAMIC, _measure, 1, 2);
1.3 paf 1495:
1.25 paf 1496: // ^image.html[]
1497: // ^image.html[hash]
1.22 paf 1498: add_native_method("html", Method::CT_DYNAMIC, _html, 0, 1);
1.6 paf 1499:
1.25 paf 1500: // ^image.load[background.gif]
1.22 paf 1501: add_native_method("load", Method::CT_DYNAMIC, _load, 1, 1);
1.6 paf 1502:
1.25 paf 1503: // ^image.create[width;height] bgcolor=white
1504: // ^image.create[width;height;bgcolor]
1.22 paf 1505: add_native_method("create", Method::CT_DYNAMIC, _create, 2, 3);
1.6 paf 1506:
1.25 paf 1507: // ^image.gif[]
1.95 paf 1508: add_native_method("gif", Method::CT_DYNAMIC, _gif, 0, 1);
1.12 paf 1509:
1.25 paf 1510: // ^image.line(x0;y0;x1;y1;color)
1.22 paf 1511: add_native_method("line", Method::CT_DYNAMIC, _line, 5, 5);
1.13 paf 1512:
1.25 paf 1513: // ^image.fill(x;y;color)
1.22 paf 1514: add_native_method("fill", Method::CT_DYNAMIC, _fill, 3, 3);
1.13 paf 1515:
1.25 paf 1516: // ^image.rectangle(x0;y0;x1;y1;color)
1.22 paf 1517: add_native_method("rectangle", Method::CT_DYNAMIC, _rectangle, 5, 5);
1.13 paf 1518:
1.25 paf 1519: // ^image.bar(x0;y0;x1;y1;color)
1.22 paf 1520: add_native_method("bar", Method::CT_DYNAMIC, _bar, 5, 5);
1.13 paf 1521:
1.44 parser 1522: // ^image.replace(color-source;color-dest)[table x:y]
1.135 misha 1523: // ^image.replace(color-source;color-dest)
1524: add_native_method("replace", Method::CT_DYNAMIC, _replace, 2, 3);
1.44 parser 1525:
1526: // ^image.polyline(color)[table x:y]
1527: add_native_method("polyline", Method::CT_DYNAMIC, _polyline, 2, 2);
1.13 paf 1528:
1.44 parser 1529: // ^image.polygon(color)[table x:y]
1530: add_native_method("polygon", Method::CT_DYNAMIC, _polygon, 2, 2);
1.13 paf 1531:
1.44 parser 1532: // ^image.polybar(color)[table x:y]
1533: add_native_method("polybar", Method::CT_DYNAMIC, _polybar, 2, 2);
1.13 paf 1534:
1.125 misha 1535: // ^image.font[alPHAbet;font-file-name.gif]
1536: // ^image.font[alPHAbet;font-file-name.gif](spacebar_width)
1537: // ^image.font[alPHAbet;font-file-name.gif](spacebar_width;letter_width)
1538: // ^image.font[alPHAbet;font-file-name.gif][$.space-width(.) $.letter-width(.) $.letter-space(.)]
1539: add_native_method("font", Method::CT_DYNAMIC, _font, 2, 4);
1.16 paf 1540:
1.125 misha 1541: // ^image.text(x;y)[text]
1.22 paf 1542: add_native_method("text", Method::CT_DYNAMIC, _text, 3, 3);
1.47 parser 1543:
1.125 misha 1544: // ^image.length[text]
1.47 parser 1545: add_native_method("length", Method::CT_DYNAMIC, _length, 1, 1);
1.16 paf 1546:
1.48 parser 1547: // ^image.arc(center x;center y;width;height;start in degrees;end in degrees;color)
1548: add_native_method("arc", Method::CT_DYNAMIC, _arc, 7, 7);
1.49 parser 1549:
1550: // ^image.sector(center x;center y;width;height;start in degrees;end in degrees;color)
1551: add_native_method("sector", Method::CT_DYNAMIC, _sector, 7, 7);
1.48 parser 1552:
1553: // ^image.circle(center x;center y;r;color)
1554: add_native_method("circle", Method::CT_DYNAMIC, _circle, 4, 4);
1555:
1.56 parser 1556: // ^image.copy[source](src x;src y;src w;src h;dst x;dst y[;dest w[;dest h[;tolerance]]])
1557: add_native_method("copy", Method::CT_DYNAMIC, _copy, 1+2+2+2, (1+2+2+2)+2+1);
1.108 paf 1558:
1559: // ^image.pixel(x;y)[(color)]
1.109 paf 1560: add_native_method("pixel", Method::CT_DYNAMIC, _pixel, 2, 3);
1.1 paf 1561: }
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