Annotation of parser3/src/classes/image.C, revision 1.173
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:
1.173 ! moko 29: volatile const char * IDENT_IMAGE_C="$Id: image.C,v 1.172 2020/12/01 18:53:01 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;
1.171 moko 237: virtual void seek(off_t value, int whence)=0;
238: virtual off_t 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:
1.171 moko 261: override void seek(off_t 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:
1.171 moko 266: override off_t 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:
1.171 moko 289: override void seek(off_t 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:
1.171 moko 306: override off_t tell() { return offset; }
1.79 paf 307:
1.1 paf 308: };
1.77 paf 309:
1.1 paf 310:
1.169 moko 311: struct Measure_info {
312: ushort width;
313: ushort height;
314: Value** exif;
315: Value** xmp;
316: Charset* xmp_charset;
1.72 paf 317: };
318:
1.164 moko 319:
1.169 moko 320: inline ushort x_endian_to_ushort(uchar b0, uchar b1) {
321: return (ushort)((b1<<8) + b0);
322: }
323:
324: inline uint x_endian_to_uint(uchar b0, uchar b1, uchar b2, uchar b3) {
325: return (uint)(((((b3<<8) + b2)<<8)+b1)<<8)+b0;
326: }
327:
328: inline ushort endian_to_ushort(bool is_big, const uchar *b/* [2] */) {
329: return is_big ? x_endian_to_ushort(b[1], b[0]) : x_endian_to_ushort(b[0], b[1]);
330: }
331:
332: inline uint endian_to_uint(bool is_big, const uchar *b /* [4] */) {
333: 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]);
334: }
1.1 paf 335:
1.170 moko 336:
1.169 moko 337: ///*********************************************** JPEG
1.170 moko 338:
1.31 parser 339: struct JPG_Segment_head {
1.80 paf 340: uchar marker;
341: uchar code;
342: uchar length[2];
1.1 paf 343: };
1.21 paf 344: /// JPEG frame header
1.31 parser 345: struct JPG_Size_segment_body {
1.164 moko 346: char data; //< data precision of bits/sample
347: uchar height[2]; //< image height
348: uchar width[2]; //< image width
349: char numComponents; //< number of color components
1.1 paf 350: };
351:
1.80 paf 352: /// JPEG Exif TIFF Header
353: struct JPG_Exif_TIFF_header {
1.165 moko 354: char byte_align_identifier[2];
355: uchar signature[2]; // always 000A [or 0A00]
1.80 paf 356: uchar first_IFD_offset[4]; // Usually the first IFD starts immediately next to TIFF header, so this offset has value '0x00000008'.
357: };
358:
359: // JPEG Exif IFD start
1.91 paf 360: struct JPG_Exif_IFD_begin {
1.80 paf 361: uchar directory_entry_count[2]; // the number of directory entry contains in this IFD
362: };
363:
364: // TTTT ffff NNNNNNNN DDDDDDDD
365: struct JPG_Exif_IFD_entry {
366: uchar tag[2]; // Tag number, this shows a kind of data
367: uchar format[2]; // data format
368: uchar components_count[4]; // number of components
369: uchar value_or_offset_to_it[4]; // data value or offset to data value
370: };
371:
372: #define JPG_IFD_TAG_EXIF_OFFSET 0x8769
373:
1.118 misha 374: #define JPG_IFD_TAG_EXIF_GPS_OFFSET 0x8825
375:
1.89 paf 376: #define JPEG_EXIF_DATE_CHARS 20
377:
1.155 moko 378: static Value* parse_IFD_entry_formatted_one_value(bool is_big, ushort format, size_t component_size, const uchar *value) {
1.80 paf 379: switch(format) {
380: case 1: // unsigned byte
1.91 paf 381: return new VInt((uchar)value[0]);
1.80 paf 382: case 3: // unsigned short
1.91 paf 383: return new VInt(endian_to_ushort(is_big, value));
1.80 paf 384: case 4: // unsigned long
385: // 'double' because parser's Int is signed
1.91 paf 386: return new VDouble(endian_to_uint(is_big, value));
1.80 paf 387: case 5: // unsigned rational
388: {
389: uint numerator=endian_to_uint(is_big, value); value+=component_size/2;
390: uint denominator=endian_to_uint(is_big, value);
391: if(!denominator)
392: return 0;
1.91 paf 393: return new VDouble(((double)numerator)/denominator);
1.80 paf 394: }
395: case 6: // signed byte
1.91 paf 396: return new VInt((signed char)value[0]);
1.80 paf 397: case 8: // signed short
1.91 paf 398: return new VInt((signed short)endian_to_ushort(is_big, value));
1.80 paf 399: case 9: // signed long
1.91 paf 400: return new VInt((signed int)endian_to_uint(is_big, value));
1.80 paf 401: case 10: // signed rational
402: {
403: signed int numerator=(signed int)endian_to_uint(is_big, value); value+=component_size/2;
404: uint denominator=endian_to_uint(is_big, value);
405: if(!denominator)
406: return 0;
1.91 paf 407: return new VDouble(numerator/denominator);
1.80 paf 408: }
409: /*
410: case 11: // single float
1.120 misha 411: @todo
1.80 paf 412: case 12: // double float
1.120 misha 413: @todo
1.80 paf 414: */
415: };
416:
417: return 0;
418: }
419:
1.89 paf 420: // date.C
1.147 moko 421: tm cstr_to_time_t(char *, const char **);
1.89 paf 422:
1.155 moko 423: 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 424: if(format==2) { // ascii string, exception: the only type with varying size
1.91 paf 425: const char* cstr=(const char* )value;
426: size_t length=components_count;
1.89 paf 427: // Data format is "YYYY:MM:DD HH:MM:SS"+0x00, total 20bytes
1.155 moko 428: if(length==JPEG_EXIF_DATE_CHARS && isdigit((unsigned char)cstr[0]) && cstr[length-1]==0) {
429: char cstr_writable[JPEG_EXIF_DATE_CHARS];
1.89 paf 430: strcpy(cstr_writable, cstr);
431:
1.106 paf 432: try {
1.147 moko 433: tm tmIn=cstr_to_time_t(cstr_writable, 0);
1.146 moko 434: return new VDate(tmIn);
1.106 paf 435: }
436: catch(...) { /*ignore bad date times*/ }
1.89 paf 437: }
438:
1.123 misha 439: return new VString(*new String(cstr, String::L_TAINTED));
1.80 paf 440: }
441:
442: if(components_count==1)
1.91 paf 443: return parse_IFD_entry_formatted_one_value(is_big, format, component_size, value);
1.80 paf 444:
1.91 paf 445: VHash* result=new VHash;
446: HashStringValue& hash=result->hash();
1.80 paf 447: for(uint i=0; i<components_count; i++, value+=component_size) {
1.91 paf 448: hash.put(
1.93 paf 449: String::Body::Format(i),
1.91 paf 450: parse_IFD_entry_formatted_one_value(is_big, format, component_size, value));
1.80 paf 451: }
452:
1.91 paf 453: return result;
1.80 paf 454: }
455:
1.155 moko 456: static Value* parse_IFD_entry_value(bool is_big, Measure_reader& reader, long tiff_base, JPG_Exif_IFD_entry& entry) {
1.80 paf 457: size_t format2component_size[]={
458: 0, // undefined
459: 1, // unsigned byte
460: 1, // ascii string
461: 2, // unsigned short
462: 4, // unsigned long
463: 8, // unsigned rational
464: 1, // signed byte
465: 0, // undefined
466: 2, // signed short
467: 4, // signed long
468: 8, // signed rational
469: /*
470: 4, // single float
471: 8, // double float
472: */
473: };
474:
475: ushort format=endian_to_ushort(is_big, entry.format);
476: if(format>=sizeof(format2component_size)/sizeof(format2component_size[0]))
477: return 0; // format out of range, ignoring
478:
479: size_t component_size=format2component_size[format];
480: if(component_size==0)
481: return 0; // undefined format
482:
483: // You can get the total data byte length by multiplies
484: // a 'bytes/components' value (see above chart) by number of components stored 'NNNNNNNN' area
485: uint components_count=endian_to_uint(is_big, entry.components_count);
1.121 misha 486: uint value_size=component_size*components_count;
1.80 paf 487: // If its size is over 4bytes, 'DDDDDDDD' contains the offset to data stored address
1.91 paf 488: Value* result;
1.80 paf 489:
490: if(value_size<=4)
1.155 moko 491: result=parse_IFD_entry_formatted_value(is_big, format, component_size, components_count, entry.value_or_offset_to_it);
1.80 paf 492: else {
1.171 moko 493: off_t remembered=reader.tell();
1.80 paf 494: {
495: reader.seek(tiff_base+endian_to_uint(is_big, entry.value_or_offset_to_it), SEEK_SET);
1.91 paf 496: const char* value;
1.156 moko 497: if(reader.read(value, value_size)<value_size)
1.80 paf 498: return 0;
1.155 moko 499: result=parse_IFD_entry_formatted_value(is_big, format, component_size, components_count, (const uchar*)value);
1.80 paf 500: }
501: reader.seek(remembered, SEEK_SET);
502: }
503:
504: return result;
505: }
506:
1.155 moko 507: static void parse_IFD(HashStringValue& hash, bool is_big, Measure_reader& reader, long tiff_base, bool gps=false);
1.91 paf 508:
1.155 moko 509: 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 510: ushort tag=endian_to_ushort(is_big, entry.tag);
1.118 misha 511:
512: if(tag==JPG_IFD_TAG_EXIF_OFFSET || tag==JPG_IFD_TAG_EXIF_GPS_OFFSET){
1.171 moko 513: off_t remembered=reader.tell();
1.80 paf 514: {
515: reader.seek(tiff_base+endian_to_uint(is_big, entry.value_or_offset_to_it), SEEK_SET);
1.118 misha 516: parse_IFD(hash, is_big, reader, tiff_base, (tag==JPG_IFD_TAG_EXIF_GPS_OFFSET)?true:gps);
1.80 paf 517: }
518: reader.seek(remembered, SEEK_SET);
519: return;
520: }
1.118 misha 521:
1.91 paf 522: if(Value* value=parse_IFD_entry_value(is_big, reader, tiff_base, entry)) {
1.118 misha 523: if(const char* name=(gps)?exif_gps_tag_value2name.get(tag):exif_tag_value2name.get(tag))
1.148 moko 524: hash.put(name, value);
1.80 paf 525: else
1.93 paf 526: hash.put(String::Body::Format(tag), value);
1.80 paf 527: }
1.1 paf 528: }
529:
1.155 moko 530: static void parse_IFD(HashStringValue& hash, bool is_big, Measure_reader& reader, long tiff_base, bool gps) {
1.91 paf 531: const char* buf;
532: if(reader.read(buf, sizeof(JPG_Exif_IFD_begin))<sizeof(JPG_Exif_IFD_begin))
1.80 paf 533: return;
1.91 paf 534: JPG_Exif_IFD_begin *start=(JPG_Exif_IFD_begin *)buf;
1.80 paf 535:
536: ushort directory_entry_count=endian_to_ushort(is_big, start->directory_entry_count);
537: for(int i=0; i<directory_entry_count; i++) {
538: if(reader.read(buf, sizeof(JPG_Exif_IFD_entry))<sizeof(JPG_Exif_IFD_entry))
539: return;
540:
1.118 misha 541: parse_IFD_entry(hash, is_big, reader, tiff_base, *(JPG_Exif_IFD_entry *)buf, gps);
1.80 paf 542: }
543: // then goes: LLLLLLLL Offset to next IFD [not going there]
544: }
545:
1.162 moko 546: static Value* parse_exif(Measure_reader& reader) {
1.91 paf 547: const char* buf;
1.80 paf 548:
549: uint tiff_base=reader.tell();
550: if(reader.read(buf, sizeof(JPG_Exif_TIFF_header))<sizeof(JPG_Exif_TIFF_header))
551: return 0;
552:
553: JPG_Exif_TIFF_header *head=(JPG_Exif_TIFF_header *)buf;
554: bool is_big=head->byte_align_identifier[0]=='M'; // [M]otorola vs [I]ntel
555:
556: uint first_IFD_offset=endian_to_uint(is_big, head->first_IFD_offset);
557: reader.seek(tiff_base+first_IFD_offset, SEEK_SET);
558:
1.91 paf 559: VHash* vhash=new VHash;
1.80 paf 560:
561: // IFD
1.91 paf 562: parse_IFD(vhash->hash(), is_big, reader, tiff_base);
1.80 paf 563:
1.91 paf 564: return vhash;
1.80 paf 565: }
566:
1.163 moko 567: static Value* parse_xmp(Measure_reader& reader, ushort xmp_length, Measure_info &info) {
1.162 moko 568: const char* buf;
569: if(reader.read(buf, xmp_length)<xmp_length)
570: return 0;
1.163 moko 571:
572: String::C xmp = Charset::transcode(String::C(pa_strdup(buf, xmp_length), xmp_length), *info.xmp_charset, pa_thread_request().charsets.source());
573: return new VString(*new String(xmp, String::L_TAINTED));
1.162 moko 574: }
575:
576: static void measure_jpeg(const String& origin_string, Measure_reader& reader, Measure_info &info) {
1.2 paf 577: // JFIF format markers
1.80 paf 578: const uchar MARKER=0xFF;
579: const uchar CODE_SIZE_A=0xC0;
580: const uchar CODE_SIZE_B=0xC1;
581: const uchar CODE_SIZE_C=0xC2;
582: const uchar CODE_SIZE_D=0xC3;
1.162 moko 583: const uchar CODE_APP1=0xE1;
1.2 paf 584:
1.91 paf 585: const char* buf;
1.18 paf 586: const size_t prefix_size=2;
1.31 parser 587: if(reader.read(buf, prefix_size)<prefix_size)
1.155 moko 588: throw Exception(IMAGE_FORMAT, &origin_string, "not JPEG file - too small");
1.80 paf 589: uchar *signature=(uchar *)buf;
1.1 paf 590:
1.31 parser 591: if(!(signature[0]==0xFF && signature[1]==0xD8))
1.155 moko 592: throw Exception(IMAGE_FORMAT, &origin_string, "not JPEG file - wrong signature");
1.31 parser 593:
594: while(true) {
1.80 paf 595: uint segment_base=reader.tell()+2/*marker,code*/;
1.31 parser 596: if(reader.read(buf, sizeof(JPG_Segment_head))<sizeof(JPG_Segment_head))
1.79 paf 597: break;
1.31 parser 598: JPG_Segment_head *head=(JPG_Segment_head *)buf;
599:
1.162 moko 600: // Verify that it's a valid segment.
1.31 parser 601: if(head->marker!=MARKER)
1.155 moko 602: throw Exception(IMAGE_FORMAT, &origin_string, "not JPEG file - marker not found");
1.79 paf 603:
1.162 moko 604: ushort segment_length=endian_to_ushort(true, head->length);
605:
1.79 paf 606: switch(head->code) {
1.162 moko 607: // http://dev.exiv2.org/projects/exiv2/wiki/The_Metadata_in_JPEG_files
608: case CODE_APP1:
609: {
610: const size_t EXIF_SIG_LEN=6; // Exif\0\0
611: const size_t XMP_SIG_LEN=29; // http://ns.adobe.com/xap/1.0/\0
612:
613: if(segment_length<EXIF_SIG_LEN+2 || reader.read(buf, EXIF_SIG_LEN)<EXIF_SIG_LEN)
614: break;
615: if(memcmp(buf, "Exif\0\0", EXIF_SIG_LEN)==0){
616: if(info.exif && !*info.exif) // backward compatibility: using first segment
617: *info.exif=parse_exif(reader);
618: break;
619: }
620:
621: if(memcmp(buf, "http:/", EXIF_SIG_LEN))
622: break;
623: if(segment_length<XMP_SIG_LEN+2 || reader.read(buf, XMP_SIG_LEN-EXIF_SIG_LEN)<XMP_SIG_LEN-EXIF_SIG_LEN)
624: break;
625: if(memcmp(buf, "/ns.adobe.com/xap/1.0/\0", XMP_SIG_LEN-EXIF_SIG_LEN)==0){
626: if(info.xmp && !*info.xmp) // backward compatibility: using first segment
1.163 moko 627: *info.xmp=parse_xmp(reader, segment_length - XMP_SIG_LEN - 2 /* segment_length */, info);
1.162 moko 628: }
629:
630: }
1.1 paf 631: break;
1.31 parser 632:
1.79 paf 633: case CODE_SIZE_A:
634: case CODE_SIZE_B:
635: case CODE_SIZE_C:
636: case CODE_SIZE_D:
637: {
638: // Segments that contain size info
639: if(reader.read(buf, sizeof(JPG_Size_segment_body))<sizeof(JPG_Size_segment_body))
1.155 moko 640: throw Exception(IMAGE_FORMAT, &origin_string, "not JPEG file - can not fully read Size segment");
1.79 paf 641: JPG_Size_segment_body *body=(JPG_Size_segment_body *)buf;
642:
1.162 moko 643: info.width=endian_to_ushort(true, body->width);
644: info.height=endian_to_ushort(true, body->height);
645: }
1.80 paf 646: return;
1.79 paf 647: };
648:
1.162 moko 649: reader.seek(segment_base + segment_length, SEEK_SET);
1.31 parser 650: }
651:
1.155 moko 652: throw Exception(IMAGE_FORMAT, &origin_string, "broken JPEG file - size frame not found");
1.1 paf 653: }
654:
1.169 moko 655: ///*********************************************** TIFF
656:
1.165 moko 657: static bool parse_tiff_IFD(bool is_big, Measure_reader& reader, Measure_info &info) {
658: const char* buf;
659: if(reader.read(buf, sizeof(JPG_Exif_IFD_begin))<sizeof(JPG_Exif_IFD_begin))
660: return false;
661: JPG_Exif_IFD_begin *start=(JPG_Exif_IFD_begin *)buf;
662:
663: ushort directory_entry_count=endian_to_ushort(is_big, start->directory_entry_count);
664: for(int i=0; i<directory_entry_count; i++) {
665: if(reader.read(buf, sizeof(JPG_Exif_IFD_entry))<sizeof(JPG_Exif_IFD_entry))
666: return false;
667:
668: JPG_Exif_IFD_entry *entry=(JPG_Exif_IFD_entry *)buf;
669: ushort entry_tag=endian_to_ushort(is_big, entry->tag);
670:
671: if(entry_tag == 256 || entry_tag == 257){
672: ushort entry_format=endian_to_ushort(is_big, entry->format);
673: if(entry_format != 3 && entry_format != 4 || endian_to_uint(is_big, entry->components_count) != 1)
674: return false;
675: 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);
676: (entry_tag == 256) ? info.width=value : info.height=value;
677: if(info.width && info.height)
678: return true;
679: }
680: }
681:
682: return false;
683: // then goes: LLLLLLLL Offset to next IFD [not going there]
684: }
685:
686: static void measure_tiff(const String& origin_string, Measure_reader& reader, Measure_info &info) {
687: const char* buf;
688:
689: if(reader.read(buf, sizeof(JPG_Exif_TIFF_header))<sizeof(JPG_Exif_TIFF_header))
690: throw Exception(IMAGE_FORMAT, &origin_string, "not TIFF file - too small");
691:
692: JPG_Exif_TIFF_header *head=(JPG_Exif_TIFF_header *)buf;
693:
694: if(strncmp(head->byte_align_identifier, "II", 2)!=0 && strncmp(head->byte_align_identifier, "MM", 2)!=0)
695: throw Exception(IMAGE_FORMAT, &origin_string, "not TIFF file - wrong signature");
696:
697: bool is_big=head->byte_align_identifier[0]=='M'; // [M]otorola vs [I]ntel
698:
699: if(endian_to_ushort(is_big, head->signature) != 42)
700: throw Exception(IMAGE_FORMAT, &origin_string, "not TIFF file - wrong signature");
701:
702: reader.seek(endian_to_uint(is_big, head->first_IFD_offset), SEEK_SET);
703: if(!parse_tiff_IFD(is_big, reader, info))
704: throw Exception(IMAGE_FORMAT, &origin_string, "broken TIFF file - size field entry not found");
705: }
706:
1.169 moko 707:
708: ///*********************************************** GIF
709:
710: struct GIF_Header {
711: char signature[3]; // 'GIF'
712: char version[3];
713: uchar width[2];
714: uchar height[2];
715: char dif;
716: char fonColor;
717: char nulls;
718: };
719:
1.164 moko 720: static void measure_gif(const String& origin_string, Measure_reader& reader, ushort& width, ushort& height) {
721:
722: const char* buf;
723: const size_t head_size=sizeof(GIF_Header);
724: if(reader.read(buf, head_size)<head_size)
725: throw Exception(IMAGE_FORMAT, &origin_string, "not GIF file - too small");
726: GIF_Header *head=(GIF_Header *)buf;
727:
728: if(strncmp(head->signature, "GIF", 3)!=0)
729: throw Exception(IMAGE_FORMAT, &origin_string, "not GIF file - wrong signature");
730:
731: width=endian_to_ushort(false, head->width);
732: height=endian_to_ushort(false, head->height);
733: }
734:
1.169 moko 735:
736: ///*********************************************** PNG
737:
738: struct PNG_Header {
739: char dummy[12];
740: char signature[4]; //< must be "IHDR"
741: uchar high_width[2]; //< image width high bytes [we ignore for now]
742: uchar width[2]; //< image width low bytes
743: uchar high_height[2]; //< image height high bytes [we ignore for now]
744: uchar height[4]; //< image height
745: };
746:
1.152 moko 747: static void measure_png(const String& origin_string, Measure_reader& reader, ushort& width, ushort& height) {
1.72 paf 748:
1.91 paf 749: const char* buf;
1.102 paf 750: const size_t head_size=sizeof(PNG_Header);
751: if(reader.read(buf, head_size)<head_size)
1.152 moko 752: throw Exception(IMAGE_FORMAT, &origin_string, "not PNG file - too small");
1.72 paf 753: PNG_Header *head=(PNG_Header *)buf;
754:
755: if(strncmp(head->signature, "IHDR", 4)!=0)
1.152 moko 756: throw Exception(IMAGE_FORMAT, &origin_string, "not PNG file - wrong signature");
1.72 paf 757:
1.80 paf 758: width=endian_to_ushort(true, head->width);
759: height=endian_to_ushort(true, head->height);
1.72 paf 760: }
761:
1.169 moko 762:
763: ///*********************************************** BMP
764:
765: struct BMP_Header {
766: char signature[2]; // 'BM'
767: uchar file_size[4];
768: uchar reserved[4];
769: uchar bitmap_offset[4];
770: uchar header_size[4];
771: uchar width[2];
772: uchar high_width[2]; //< image width high bytes [we ignore for now]
773: uchar height[2];
774: uchar high_height[2]; //< image height high bytes [we ignore for now]
775: };
776:
1.164 moko 777: static void measure_bmp(const String& origin_string, Measure_reader& reader, ushort& width, ushort& height) {
778:
779: const char* buf;
780: const size_t head_size=sizeof(BMP_Header);
781: if(reader.read(buf, head_size)<head_size)
782: throw Exception(IMAGE_FORMAT, &origin_string, "not BMP file - too small");
783: BMP_Header *head=(BMP_Header *)buf;
784:
785: if(strncmp(head->signature, "BM", 2)!=0)
786: throw Exception(IMAGE_FORMAT, &origin_string, "not BMP file - wrong signature");
787:
788: reader.seek(0, SEEK_END);
1.166 moko 789: if((uint)reader.tell() != endian_to_uint(false, head->file_size))
1.164 moko 790: throw Exception(IMAGE_FORMAT, &origin_string, "not BMP file - length header and file size do not match");
791:
792: width=endian_to_ushort(false, head->width);
793: height=endian_to_ushort(false, head->height);
794: }
795:
1.168 moko 796:
1.169 moko 797: ///*********************************************** WEBP
798:
799: struct WEBP_Header {
800: char signature_riff[4]; // 'RIFF'
801: uchar file_size[4];
802: char signature[4]; // 'WEBP'
803: char format[4]; // 'VP8 ' or 'VP8L' or 'VP8X'
804: };
805:
806: struct WEBP_VP8_Chunk {
807: uchar size[4];
808: char tag[3];
809: uchar signature[3]; // 0x9D 0x01 0x2A
810: uchar width[2]; // 14 bits each
811: uchar height[2]; // 14 bits each
812: };
813:
814: struct WEBP_VP8L_Chunk {
815: uchar size[4];
816: char signature; // 0x2F
817: uchar width_height[4]; // 14 bits each
818: };
819:
820: struct WEBP_X_Chunk {
821: uchar size[4];
822: char reserved[4];
823: uchar width[3];
824: uchar height[3];
825: };
826:
1.168 moko 827: static void measure_webp(const String& origin_string, Measure_reader& reader, ushort& width, ushort& height) {
828: const char* buf;
829:
830: if(reader.read(buf, sizeof(WEBP_Header))<sizeof(WEBP_Header))
831: throw Exception(IMAGE_FORMAT, &origin_string, "not WEBP file - too small");
832:
833: WEBP_Header *head=(WEBP_Header *)buf;
834:
835: if(strncmp(head->signature_riff, "RIFF", 4)!=0 || strncmp(head->signature, "WEBP", 4)!=0)
836: throw Exception(IMAGE_FORMAT, &origin_string, "not WEBP file - wrong signature");
837:
838: if(strncmp(head->format, "VP8 ", 4)==0){
839: if(reader.read(buf, sizeof(WEBP_VP8_Chunk))<sizeof(WEBP_VP8_Chunk))
840: throw Exception(IMAGE_FORMAT, &origin_string, "broken WEBP file - too small VP8 chunk");
841:
842: WEBP_VP8_Chunk *chunk=(WEBP_VP8_Chunk *)buf;
843: if (chunk->signature[0] != 0x9D || chunk->signature[1] != 0x01 || chunk->signature[2] != 0x2A)
844: throw Exception(IMAGE_FORMAT, &origin_string, "broken WEBP file - wrong VP8 chunk signature");
845:
846: width=endian_to_ushort(false, chunk->width) & 0x3FFF;
847: height=endian_to_ushort(false, chunk->height) & 0x3FFF;
848: } else if(strncmp(head->format, "VP8L", 4)==0){
849: if(reader.read(buf, sizeof(WEBP_VP8L_Chunk))<sizeof(WEBP_VP8L_Chunk))
850: throw Exception(IMAGE_FORMAT, &origin_string, "broken WEBP file - too small VP8L chunk");
851:
852: WEBP_VP8L_Chunk *chunk=(WEBP_VP8L_Chunk *)buf;
853: if(chunk->signature != 0x2F)
854: throw Exception(IMAGE_FORMAT, &origin_string, "broken WEBP file - wrong VP8L chunk signature");
855:
856: uint wh=endian_to_uint(false, chunk->width_height);
857: width=(wh & 0x3FFF) + 1;
858: height=((wh >> 14) & 0x3FFF) + 1;
859: } else if (strncmp(head->format, "VP8X", 4)==0){
860: if(reader.read(buf, sizeof(WEBP_X_Chunk))<sizeof(WEBP_X_Chunk))
861: throw Exception(IMAGE_FORMAT, &origin_string, "broken WEBP file - too small VP8X chunk");
862:
863: WEBP_X_Chunk *chunk=(WEBP_X_Chunk *)buf;
864:
865: width=endian_to_ushort(false, chunk->width) + 1; // we ignore third byte to simplify code
866: height=endian_to_ushort(false, chunk->height) + 1; // we ignore third byte to simplify code
867: } else throw Exception(IMAGE_FORMAT, &origin_string, "broken WEBP file - invalid chunk signature");
868: }
869:
1.170 moko 870:
871: ///*********************************************** MP4
872:
873: struct MP4_Header {
874: uchar size[4];
875: char signature[4]; // 'ftyp' in first chunk
876: };
877:
1.173 ! moko 878: struct MP4_ExtSize {
! 879: uchar high[4];
! 880: uchar low[4];
! 881: };
! 882:
! 883: struct MP4_Tkhd {
! 884: uchar width[4];
! 885: uchar height[4];
! 886: };
! 887:
1.171 moko 888: static bool measure_mp4(const String& origin_string, Measure_reader& reader, ushort& width, ushort& height, off_t anext, const char* lastTkhd=NULL) {
1.170 moko 889: for(bool first=anext==0;;){
890: const char* buf;
1.173 ! moko 891: off_t next=reader.tell();
! 892:
! 893: if(reader.read(buf, sizeof(MP4_Header))<sizeof(MP4_Header))
1.172 moko 894: throw Exception(IMAGE_FORMAT, &origin_string, first ? "not MP4 file - too small" : "broken MP4 file - truncated chunk header");
1.170 moko 895:
896: MP4_Header *head=(MP4_Header *)buf;
1.173 ! moko 897: off_t size=endian_to_uint(true, head->size);
1.170 moko 898:
1.173 ! moko 899: if(size==1){
! 900: if(reader.read(buf, sizeof(MP4_ExtSize))<sizeof(MP4_ExtSize))
! 901: throw Exception(IMAGE_FORMAT, &origin_string, "broken MP4 file - truncated chunk extended size header");
! 902: MP4_ExtSize *ext_size=(MP4_ExtSize *)buf;
! 903: size=((off_t)endian_to_uint(true, ext_size->high) << 32) + endian_to_uint(true, ext_size->low);
! 904: }
! 905: next+=size;
1.170 moko 906:
907: if(first){
908: if(strncmp(head->signature, "ftyp", 4)!=0)
909: throw Exception(IMAGE_FORMAT, &origin_string, "not MP4 file - wrong signature");
910: first=false;
1.172 moko 911: reader.seek(0, SEEK_END);
912: anext=reader.tell(); // to avoid reading beyond EOF
1.170 moko 913: } else if(strncmp(head->signature, "moov", 4)==0 || strncmp(head->signature, "mdia", 4)==0 || strncmp(head->signature, "trak", 4)==0) {
914: if(measure_mp4(origin_string, reader, width, height, next, lastTkhd))
915: return true;
916: } else if(strncmp(head->signature, "tkhd", 4)==0) {
917: if(size>8){
918: reader.seek(next-8, SEEK_SET);
1.173 ! moko 919: if(reader.read(lastTkhd, sizeof(MP4_Tkhd))<sizeof(MP4_Tkhd))
1.170 moko 920: throw Exception(IMAGE_FORMAT, &origin_string, "broken MP4 file - bad tkhd chunk");
921: }
922: } else if (strncmp(head->signature, "hdlr", 4)==0) {
923: if(size>12){
924: const char* hdlr;
925: if(reader.read(hdlr, 12)<12)
926: throw Exception(IMAGE_FORMAT, &origin_string, "broken MP4 file - bad hdlr chunk");
1.173 ! moko 927: if(lastTkhd && strncmp(hdlr+8, "vide", 4)==0) {
! 928: MP4_Tkhd *tkhd=(MP4_Tkhd *)lastTkhd;
! 929: width=endian_to_ushort(true, tkhd->width);
! 930: height=endian_to_ushort(true, tkhd->height);
1.170 moko 931: return true;
932: }
933: }
934: }
935: if(anext && next>=anext)
936: break;
937: reader.seek(next, SEEK_SET);
938: }
939: return false;
940: }
941:
942: static void measure_mp4(const String& origin_string, Measure_reader& reader, ushort& width, ushort& height) {
943: if(!measure_mp4(origin_string, reader, width, height, 0))
944: throw Exception(IMAGE_FORMAT, &origin_string, "unsupported MP4 file - size not found");
945: }
946:
1.169 moko 947: ///*********************************************** measure center
1.1 paf 948:
1.162 moko 949: static void measure(const String& file_name, Measure_reader& reader, Measure_info &info) {
1.128 misha 950: const char* file_name_cstr=file_name.taint_cstr(String::L_FILE_SPEC);
1.91 paf 951: if(const char* cext=strrchr(file_name_cstr, '.')) {
1.1 paf 952: cext++;
953: if(strcasecmp(cext, "GIF")==0)
1.162 moko 954: measure_gif(file_name, reader, info.width, info.height);
1.165 moko 955: else if(strcasecmp(cext, "JPG")==0 || strcasecmp(cext, "JPEG")==0)
1.162 moko 956: measure_jpeg(file_name, reader, info);
1.72 paf 957: else if(strcasecmp(cext, "PNG")==0)
1.162 moko 958: measure_png(file_name, reader, info.width, info.height);
1.164 moko 959: else if(strcasecmp(cext, "BMP")==0)
960: measure_bmp(file_name, reader, info.width, info.height);
1.168 moko 961: else if(strcasecmp(cext, "WEBP")==0)
962: measure_webp(file_name, reader, info.width, info.height);
1.165 moko 963: else if(strcasecmp(cext, "TIF")==0 || strcasecmp(cext, "TIFF")==0)
964: measure_tiff(file_name, reader, info);
1.171 moko 965: else if(strcasecmp(cext, "MP4")==0 || strcasecmp(cext, "MOV")==0)
1.170 moko 966: measure_mp4(file_name, reader, info.width, info.height);
1.1 paf 967: else
1.152 moko 968: throw Exception(IMAGE_FORMAT, &file_name, "unhandled image file name extension '%s'", cext);
1.1 paf 969: } else
1.152 moko 970: throw Exception(IMAGE_FORMAT, &file_name, "can not determine image type - no file name extension");
1.1 paf 971: }
972:
1.77 paf 973: // methods
1.1 paf 974:
1.152 moko 975: static void file_measure_action(struct stat& /*finfo*/, int f, const String& file_spec, void *context) {
976: Measure_file_reader reader(f, file_spec);
1.162 moko 977: measure(file_spec, reader, *static_cast<Measure_info *>(context));
1.1 paf 978: }
979:
1.91 paf 980: static void _measure(Request& r, MethodParams& params) {
981: Value& data=params.as_no_junction(0, "data must not be code");
1.1 paf 982:
1.91 paf 983: Value* exif=0;
1.162 moko 984: Value* xmp=0;
1.163 moko 985: Measure_info info={ 0, 0, 0, 0, &pa_UTF8_charset };
986:
987: if(params.count()>1)
988: if(HashStringValue* options=params.as_hash(1, "methods options")) {
989: int valid_options=0;
990: for(HashStringValue::Iterator i(*options); i; i.next() ){
991: String::Body key=i.key();
992: Value* value=i.value();
993: if(key == "exif") {
994: if(r.process(*value).as_bool())
995: info.exif=&exif;
996: valid_options++;
997: }
998: if(key == "xmp") {
999: if(r.process(*value).as_bool())
1000: info.xmp=&xmp;
1001: valid_options++;
1002: }
1003: if(key == "xmp-charset") {
1004: info.xmp_charset=&pa_charsets.get(value->as_string());
1005: valid_options++;
1006: }
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){
1.140 misha 1186: Table* table=params.as_table(2, "coordinates");
1.135 misha 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: } else {
1192: int max_x=image.SX()-1;
1193: int max_y=image.SY()-1;
1194: if(max_x > 0 && max_y > 0){
1195: count=4;
1196: all_p=new(PointerFreeGC) gdImage::Point[count];
1197: gdImage::Point* add_p=all_p;
1198: add_point(0, 0, &add_p);
1199: add_point(max_x, 0, &add_p);
1200: add_point(max_x, max_y, &add_p);
1201: add_point(0, max_y, &add_p);
1202: }
1203: }
1.13 paf 1204:
1.135 misha 1205: if(count)
1206: image.FilledPolygonReplaceColor(all_p, count, image.Color(src_color), image.Color(dest_color));
1.13 paf 1207: }
1208:
1.91 paf 1209: static void _polyline(Request& r, MethodParams& params) {
1.108 paf 1210: gdImage& image=GET_SELF(r, VImage).image();
1.13 paf 1211:
1.140 misha 1212: Table* table=params.as_table(1, "coordinates");
1.44 parser 1213:
1.92 paf 1214: gdImage::Point* all_p=new(PointerFreeGC) gdImage::Point[table->count()];
1.44 parser 1215: gdImage::Point *add_p=all_p;
1216: table->for_each(add_point, &add_p);
1.108 paf 1217: image.Polygon(all_p, table->count(),
1218: image.Color(params.as_int(0, "color must be int", r)),
1.44 parser 1219: false/*not closed*/);
1220: }
1221:
1.91 paf 1222: static void _polygon(Request& r, MethodParams& params) {
1.108 paf 1223: gdImage& image=GET_SELF(r, VImage).image();
1.13 paf 1224:
1.140 misha 1225: Table* table=(Table*)params.as_table(1, "coordinates");
1.44 parser 1226:
1.92 paf 1227: gdImage::Point* all_p=new(PointerFreeGC) gdImage::Point[table->count()];
1.44 parser 1228: gdImage::Point *add_p=all_p;
1229: table->for_each(add_point, &add_p);
1.108 paf 1230: image.Polygon(all_p, table->count(),
1231: image.Color(params.as_int(0, "color must be int", r)));
1.13 paf 1232: }
1233:
1.91 paf 1234: static void _polybar(Request& r, MethodParams& params) {
1.108 paf 1235: gdImage& image=GET_SELF(r, VImage).image();
1.13 paf 1236:
1.140 misha 1237: Table* table=(Table*)params.as_table(1, "coordinates");
1.13 paf 1238:
1.92 paf 1239: gdImage::Point* all_p=new(PointerFreeGC) gdImage::Point[table->count()];
1.44 parser 1240: gdImage::Point *add_p=all_p;
1241: table->for_each(add_point, &add_p);
1.108 paf 1242: image.FilledPolygon(all_p, table->count(),
1243: image.Color(params.as_int(0, "color must be int", r)));
1.12 paf 1244: }
1245:
1.16 paf 1246: // font
1247:
1.85 paf 1248: #define Y(y)(y+index*height)
1.21 paf 1249:
1.91 paf 1250: // Font class
1251:
1.155 moko 1252: Font::Font(Charset& asource_charset, const String& aalphabet, gdImage* aifont, int aheight, int amonospace, int aspacebarspace, int aletterspacing):
1.158 moko 1253: letterspacing(aletterspacing),
1.132 misha 1254: height(aheight),
1255: monospace(amonospace),
1256: spacebarspace(aspacebarspace),
1.100 paf 1257: ifont(aifont),
1.158 moko 1258: alphabet(aalphabet),
1259: fsource_charset(asource_charset){
1.132 misha 1260:
1261: if(fsource_charset.isUTF8()){
1262: size_t index=0;
1263: for(UTF8_string_iterator i(alphabet); i.has_next(); )
1264: fletter2index.put_dont_replace(i.next(), index++);
1265: }
1.91 paf 1266: }
1267:
1268: /* ******************************** char ********************************** */
1269:
1270: size_t Font::index_of(char ch) {
1271: if(ch==' ') return STRING_NOT_FOUND;
1272: return alphabet.pos(ch);
1273: }
1274:
1.132 misha 1275: size_t Font::index_of(XMLCh ch) {
1276: if(ch==' ') return STRING_NOT_FOUND;
1277: return fletter2index.get(ch);
1278: }
1279:
1.91 paf 1280: int Font::index_width(size_t index) {
1281: if(index==STRING_NOT_FOUND)
1282: return spacebarspace;
1283: int tr=ifont->GetTransparent();
1284: for(int x=ifont->SX()-1; x>=0; x--) {
1285: for(int y=0; y<height; y++)
1286: if(ifont->GetPixel(x, Y(y))!=tr)
1287: return x+1;
1.16 paf 1288: }
1.91 paf 1289: return 0;
1290: }
1291:
1.108 paf 1292: void Font::index_display(gdImage& image, int x, int y, size_t index){
1.91 paf 1293: if(index!=STRING_NOT_FOUND)
1.108 paf 1294: ifont->Copy(image, x, y, 0, Y(0), index_width(index), height);
1.91 paf 1295: }
1296:
1297: /* ******************************** string ********************************** */
1298:
1299: int Font::step_width(int index) {
1.125 misha 1300: return letterspacing + (monospace ? monospace : index_width(index));
1.91 paf 1301: }
1302:
1303: // counts trailing letter_spacing, consider this OK. useful for contiuations
1304: int Font::string_width(const String& s){
1305: const char* cstr=s.cstr();
1306: int result=0;
1.132 misha 1307:
1308: if(fsource_charset.isUTF8()){
1309: for(UTF8_string_iterator i(s); i.has_next(); )
1310: result+=step_width(index_of(i.next()));
1311: } else {
1312: for(const char* current=cstr; *current; current++)
1313: result+=step_width(index_of(*current));
1314: }
1315:
1.91 paf 1316: return result;
1317: }
1318:
1.108 paf 1319: void Font::string_display(gdImage& image, int x, int y, const String& s){
1.91 paf 1320: const char* cstr=s.cstr();
1.132 misha 1321:
1322: if(fsource_charset.isUTF8()){
1323: for(UTF8_string_iterator i(s); i.has_next(); ){
1324: size_t index=index_of(i.next());
1325: index_display(image, x, y, index);
1326: x+=step_width(index);
1327: }
1328: } else {
1329: for(const char* current=cstr; *current; current++) {
1330: size_t index=index_of(*current);
1331: index_display(image, x, y, index);
1332: x+=step_width(index);
1333: }
1.87 paf 1334: }
1.91 paf 1335: }
1.87 paf 1336:
1.91 paf 1337: //
1.35 parser 1338:
1.16 paf 1339:
1.91 paf 1340: static void _font(Request& r, MethodParams& params) {
1341: const String& alphabet=params.as_string(0, "alphabet must not be code");
1.131 misha 1342: size_t alphabet_length=alphabet.length(r.charsets.source());
1343: if(!alphabet_length)
1.155 moko 1344: throw Exception(PARSER_RUNTIME, 0, "alphabet must not be empty");
1.84 paf 1345:
1.125 misha 1346: gdImage* image=load(r, params.as_string(1, FILE_NAME_MUST_NOT_BE_CODE));
1347:
1.126 misha 1348: int spacebar_width=image->SX();
1.125 misha 1349: int monospace_width=0; // proportional
1350: int letter_spacing=1;
1351: if(params.count()>2){
1.144 moko 1352: if(HashStringValue* options=params[2].get_hash()){
1.125 misha 1353: // third option is hash
1354: if(params.count()>3)
1.144 moko 1355: throw Exception(PARSER_RUNTIME, 0, "too many params were specified");
1.125 misha 1356: int valid_options=0;
1357: if(Value* vspacebar_width=options->get(spacebar_width_name)){
1358: valid_options++;
1.153 moko 1359: spacebar_width=r.process(*vspacebar_width).as_int();
1.125 misha 1360: }
1361: if(Value* vmonospace_width=options->get(monospace_width_name)){
1362: valid_options++;
1.153 moko 1363: monospace_width=r.process(*vmonospace_width).as_int();
1.125 misha 1364: if(!monospace_width)
1365: monospace_width=image->SX();
1366: }
1367: if(Value* vletter_spacing=options->get(letter_spacing_name)){
1368: valid_options++;
1.153 moko 1369: letter_spacing=r.process(*vletter_spacing).as_int();
1.125 misha 1370: }
1371: if(valid_options!=options->count())
1.134 misha 1372: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.125 misha 1373: } else {
1374: // backward
1.144 moko 1375: spacebar_width=params.as_int(2, "param must be int or hash", r);
1.125 misha 1376: if(params.count()>3) {
1377: monospace_width=params.as_int(3, "monospace_width must be int", r);
1378: if(!monospace_width)
1379: monospace_width=image->SX();
1380: }
1381: }
1382: }
1383:
1.131 misha 1384: if(int remainder=image->SY() % alphabet_length)
1.155 moko 1385: 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 1386:
1.155 moko 1387: 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 1388: }
1389:
1.91 paf 1390: static void _text(Request& r, MethodParams& params) {
1391: int x=params.as_int(0, "x must be int", r);
1392: int y=params.as_int(1, "y must be int", r);
1393: const String& s=params.as_string(2, "text must not be code");
1.16 paf 1394:
1.91 paf 1395: VImage& vimage=GET_SELF(r, VImage);
1.108 paf 1396: vimage.font().string_display(vimage.image(), x, y, s);
1.16 paf 1397: }
1398:
1.91 paf 1399: static void _length(Request& r, MethodParams& params) {
1400: const String& s=params.as_string(0, "text must not be code");
1.47 parser 1401:
1.91 paf 1402: VImage& vimage=GET_SELF(r, VImage);
1.157 moko 1403: r.write(*new VInt(vimage.font().string_width(s)));
1.47 parser 1404: }
1405:
1.91 paf 1406: static void _arc(Request& r, MethodParams& params) {
1.108 paf 1407: gdImage& image=GET_SELF(r, VImage).image();
1.48 parser 1408:
1.108 paf 1409: image.Arc(
1.91 paf 1410: params.as_int(0, "center_x must be int", r),
1411: params.as_int(1, "center_y must be int", r),
1412: params.as_int(2, "width must be int", r),
1413: params.as_int(3, "height must be int", r),
1414: params.as_int(4, "start degrees must be int", r),
1415: params.as_int(5, "end degrees must be int", r),
1.108 paf 1416: image.Color(params.as_int(6, "cx must be int", r)));
1.48 parser 1417: }
1418:
1.91 paf 1419: static void _sector(Request& r, MethodParams& params) {
1.108 paf 1420: gdImage& image=GET_SELF(r, VImage).image();
1.49 parser 1421:
1.108 paf 1422: image.Sector(
1.91 paf 1423: params.as_int(0, "center_x must be int", r),
1424: params.as_int(1, "center_y must be int", r),
1425: params.as_int(2, "width must be int", r),
1426: params.as_int(3, "height must be int", r),
1427: params.as_int(4, "start degrees must be int", r),
1428: params.as_int(5, "end degrees must be int", r),
1.108 paf 1429: image.Color(params.as_int(6, "color must be int", r)));
1.49 parser 1430: }
1431:
1.91 paf 1432: static void _circle(Request& r, MethodParams& params) {
1.108 paf 1433: gdImage& image=GET_SELF(r, VImage).image();
1.48 parser 1434:
1.91 paf 1435: int size=params.as_int(2, "radius must be int", r)*2;
1.108 paf 1436: image.Arc(
1.91 paf 1437: params.as_int(0, "center_x must be int", r),
1438: params.as_int(1, "center_y must be int", r),
1.50 parser 1439: size, //w
1440: size, //h
1.48 parser 1441: 0, //s
1442: 360, //e
1.108 paf 1443: image.Color(params.as_int(3, "color must be int", r)));
1.48 parser 1444: }
1445:
1.108 paf 1446: gdImage& as_image(MethodParams& params, int index, const char* msg) {
1.91 paf 1447: Value& value=params.as_no_junction(index, msg);
1.53 parser 1448:
1.130 misha 1449: if(Value* vimage=value.as(VIMAGE_TYPE)) {
1.108 paf 1450: return static_cast<VImage *>(vimage)->image();
1.75 paf 1451: } else
1.155 moko 1452: throw Exception(PARSER_RUNTIME, 0, msg);
1.53 parser 1453: }
1454:
1.91 paf 1455: static void _copy(Request& r, MethodParams& params) {
1.108 paf 1456: gdImage& dest=GET_SELF(r, VImage).image();
1.53 parser 1457:
1.108 paf 1458: gdImage& src=as_image(params, 0, "src must be image");
1.53 parser 1459:
1.91 paf 1460: int sx=params.as_int(1, "src_x must be int", r);
1461: int sy=params.as_int(2, "src_y must be int", r);
1462: int sw=params.as_int(3, "src_w must be int", r);
1463: int sh=params.as_int(4, "src_h must be int", r);
1464: int dx=params.as_int(5, "dest_x must be int", r);
1465: int dy=params.as_int(6, "dest_y must be int", r);
1466: if(params.count()>1+2+2+2) {
1467: int dw=params.as_int(1+2+2+2, "dest_w must be int", r);
1468: int dh=(int)(params.count()>1+2+2+2+1?
1469: params.as_int(1+2+2+2+1, "dest_h must be int", r):sh*(((double)dw)/((double)sw)));
1470: int tolerance=params.count()>1+2+2+2+2?
1471: params.as_int(1+2+2+2+2, "tolerance must be int", r):150;
1.53 parser 1472:
1.108 paf 1473: src.CopyResampled(dest, dx, dy, sx, sy, dw, dh, sw, sh, tolerance);
1.53 parser 1474: } else
1.108 paf 1475: src.Copy(dest, dx, dy, sx, sy, sw, sh);
1476: }
1477:
1478: static void _pixel(Request& r, MethodParams& params) {
1479: gdImage& image=GET_SELF(r, VImage).image();
1480:
1.109 paf 1481: int x=params.as_int(0, "x must be int", r);
1482: int y=params.as_int(1, "y must be int", r);
1483:
1484: if(params.count()>2) {
1485: image.SetPixel(x, y,
1486: image.Color(params.as_int(2, "color must be int", r)));
1487: } else
1.157 moko 1488: r.write(*new VInt(image.DecodeColor(image.GetPixel(x, y))));
1.53 parser 1489: }
1490:
1491:
1.22 paf 1492: // constructor
1493:
1.91 paf 1494: MImage::MImage(): Methoded("image") {
1.1 paf 1495: // ^image:measure[DATA]
1.163 moko 1496: // ^image:measure[DATA; $.exif(false) $.xmp(false) $.xmp-charset[UTF-8] ]
1497: add_native_method("measure", Method::CT_DYNAMIC, _measure, 1, 2);
1.3 paf 1498:
1.25 paf 1499: // ^image.html[]
1500: // ^image.html[hash]
1.22 paf 1501: add_native_method("html", Method::CT_DYNAMIC, _html, 0, 1);
1.6 paf 1502:
1.25 paf 1503: // ^image.load[background.gif]
1.22 paf 1504: add_native_method("load", Method::CT_DYNAMIC, _load, 1, 1);
1.6 paf 1505:
1.25 paf 1506: // ^image.create[width;height] bgcolor=white
1507: // ^image.create[width;height;bgcolor]
1.22 paf 1508: add_native_method("create", Method::CT_DYNAMIC, _create, 2, 3);
1.6 paf 1509:
1.25 paf 1510: // ^image.gif[]
1.95 paf 1511: add_native_method("gif", Method::CT_DYNAMIC, _gif, 0, 1);
1.12 paf 1512:
1.25 paf 1513: // ^image.line(x0;y0;x1;y1;color)
1.22 paf 1514: add_native_method("line", Method::CT_DYNAMIC, _line, 5, 5);
1.13 paf 1515:
1.25 paf 1516: // ^image.fill(x;y;color)
1.22 paf 1517: add_native_method("fill", Method::CT_DYNAMIC, _fill, 3, 3);
1.13 paf 1518:
1.25 paf 1519: // ^image.rectangle(x0;y0;x1;y1;color)
1.22 paf 1520: add_native_method("rectangle", Method::CT_DYNAMIC, _rectangle, 5, 5);
1.13 paf 1521:
1.25 paf 1522: // ^image.bar(x0;y0;x1;y1;color)
1.22 paf 1523: add_native_method("bar", Method::CT_DYNAMIC, _bar, 5, 5);
1.13 paf 1524:
1.44 parser 1525: // ^image.replace(color-source;color-dest)[table x:y]
1.135 misha 1526: // ^image.replace(color-source;color-dest)
1527: add_native_method("replace", Method::CT_DYNAMIC, _replace, 2, 3);
1.44 parser 1528:
1529: // ^image.polyline(color)[table x:y]
1530: add_native_method("polyline", Method::CT_DYNAMIC, _polyline, 2, 2);
1.13 paf 1531:
1.44 parser 1532: // ^image.polygon(color)[table x:y]
1533: add_native_method("polygon", Method::CT_DYNAMIC, _polygon, 2, 2);
1.13 paf 1534:
1.44 parser 1535: // ^image.polybar(color)[table x:y]
1536: add_native_method("polybar", Method::CT_DYNAMIC, _polybar, 2, 2);
1.13 paf 1537:
1.125 misha 1538: // ^image.font[alPHAbet;font-file-name.gif]
1539: // ^image.font[alPHAbet;font-file-name.gif](spacebar_width)
1540: // ^image.font[alPHAbet;font-file-name.gif](spacebar_width;letter_width)
1541: // ^image.font[alPHAbet;font-file-name.gif][$.space-width(.) $.letter-width(.) $.letter-space(.)]
1542: add_native_method("font", Method::CT_DYNAMIC, _font, 2, 4);
1.16 paf 1543:
1.125 misha 1544: // ^image.text(x;y)[text]
1.22 paf 1545: add_native_method("text", Method::CT_DYNAMIC, _text, 3, 3);
1.47 parser 1546:
1.125 misha 1547: // ^image.length[text]
1.47 parser 1548: add_native_method("length", Method::CT_DYNAMIC, _length, 1, 1);
1.16 paf 1549:
1.48 parser 1550: // ^image.arc(center x;center y;width;height;start in degrees;end in degrees;color)
1551: add_native_method("arc", Method::CT_DYNAMIC, _arc, 7, 7);
1.49 parser 1552:
1553: // ^image.sector(center x;center y;width;height;start in degrees;end in degrees;color)
1554: add_native_method("sector", Method::CT_DYNAMIC, _sector, 7, 7);
1.48 parser 1555:
1556: // ^image.circle(center x;center y;r;color)
1557: add_native_method("circle", Method::CT_DYNAMIC, _circle, 4, 4);
1558:
1.56 parser 1559: // ^image.copy[source](src x;src y;src w;src h;dst x;dst y[;dest w[;dest h[;tolerance]]])
1560: add_native_method("copy", Method::CT_DYNAMIC, _copy, 1+2+2+2, (1+2+2+2)+2+1);
1.108 paf 1561:
1562: // ^image.pixel(x;y)[(color)]
1.109 paf 1563: add_native_method("pixel", Method::CT_DYNAMIC, _pixel, 2, 3);
1.1 paf 1564: }
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