Annotation of parser3/src/classes/image.C, revision 1.191
1.1 paf 1: /** @file
2: Parser: @b image parser class.
3:
1.189 moko 4: Copyright (c) 2001-2024 Art. Lebedev Studio (http://www.artlebedev.com)
1.184 moko 5: Authors: Konstantin Morshnev <moko@design.ru>, Alexandr Petrosian <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:
1.191 ! moko 29: volatile const char * IDENT_IMAGE_C="$Id: image.C,v 1.190 2024/11/10 20:28:15 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: }
1.190 moko 192:
193: static EXIF_tag_value2name &instance(){
194: static EXIF_tag_value2name *singleton=NULL;
1.191 ! moko 195: if(singleton==NULL)
1.190 moko 196: singleton=new EXIF_tag_value2name;
197: return *singleton;
198: }
199: };
1.91 paf 200:
1.118 misha 201: class EXIF_gps_tag_value2name: public Hash<int, const char*> {
202: public:
203: EXIF_gps_tag_value2name() {
204: EXIF_TAG(0x0, GPSVersionID);
205: EXIF_TAG(0x1, GPSLatitudeRef);
206: EXIF_TAG(0x2, GPSLatitude);
207: EXIF_TAG(0x3, GPSLongitudeRef);
208: EXIF_TAG(0x4, GPSLongitude);
209: EXIF_TAG(0x5, GPSAltitudeRef);
210: EXIF_TAG(0x6, GPSAltitude);
211: EXIF_TAG(0x7, GPSTimeStamp);
212: EXIF_TAG(0x8, GPSSatellites);
213: EXIF_TAG(0x9, GPSStatus);
214: EXIF_TAG(0xA, GPSMeasureMode);
215: EXIF_TAG(0xB, GPSDOP);
216: EXIF_TAG(0xC, GPSSpeedRef);
217: EXIF_TAG(0xD, GPSSpeed);
218: EXIF_TAG(0xE, GPSTrackRef);
219: EXIF_TAG(0xF, GPSTrack);
220: EXIF_TAG(0x10, GPSImgDirectionRef);
221: EXIF_TAG(0x11, GPSImgDirection);
222: EXIF_TAG(0x12, GPSMapDatum);
223: EXIF_TAG(0x13, GPSDestLatitudeRef);
224: EXIF_TAG(0x14, GPSDestLatitude);
225: EXIF_TAG(0x15, GPSDestLongitudeRef);
226: EXIF_TAG(0x16, GPSDestLongitude);
227: EXIF_TAG(0x17, GPSDestBearingRef);
228: EXIF_TAG(0x18, GPSDestBearing);
229: EXIF_TAG(0x19, GPSDestDistanceRef);
230: EXIF_TAG(0x1A, GPSDestDistance);
231: EXIF_TAG(0x1B, GPSProcessingMethod);
232: EXIF_TAG(0x1C, GPSAreaInformation);
233: EXIF_TAG(0x1D, GPSDateStamp);
234: EXIF_TAG(0x1E, GPSDifferential);
235: }
1.190 moko 236:
237: static EXIF_gps_tag_value2name &instance(){
238: static EXIF_gps_tag_value2name *singleton=NULL;
1.191 ! moko 239: if(singleton==NULL)
1.190 moko 240: singleton=new EXIF_gps_tag_value2name;
241: return *singleton;
242: }
243:
244: };
1.118 misha 245:
1.170 moko 246:
1.169 moko 247: ///*********************************************** support functions
1.91 paf 248:
1.1 paf 249: class Measure_reader {
250: public:
1.91 paf 251: virtual size_t read(const char* &buf, size_t limit)=0;
1.174 moko 252: virtual void seek(uint64_t value)=0;
253: virtual uint64_t tell()=0;
254: virtual uint64_t length()=0;
1.77 paf 255: };
1.1 paf 256:
1.77 paf 257: class Measure_file_reader: public Measure_reader {
1.152 moko 258: const String& file_name;
1.91 paf 259: int f;
260:
1.77 paf 261: public:
1.152 moko 262: Measure_file_reader(int af, const String& afile_name):
263: file_name(afile_name), f(af) {
1.1 paf 264: }
265:
1.91 paf 266: override size_t read(const char* &abuf, size_t limit) {
1.77 paf 267: if(limit==0)
1.1 paf 268: return 0;
1.77 paf 269:
1.91 paf 270: char* lbuf=new(PointerFreeGC) char[limit];
1.143 moko 271: ssize_t read_size=::read(f, lbuf, limit); abuf=lbuf;
272: if(read_size<0)
273: throw Exception(0, &file_name, "measure read failed: %s (%d)", strerror(errno), errno);
1.1 paf 274: return read_size;
275: }
276:
1.174 moko 277: override void seek(uint64_t value) {
278: if(pa_lseek(f, value, SEEK_SET)<0)
279: throw Exception(IMAGE_FORMAT, &file_name, "seek to %.15g failed: %s (%d)", (double)value, strerror(errno), errno);
1.77 paf 280: }
281:
1.174 moko 282: override uint64_t tell() { return pa_lseek(f, 0, SEEK_CUR); }
283:
284: override uint64_t length() { return pa_lseek(f, 0, SEEK_END); }
1.79 paf 285:
1.77 paf 286: };
287:
288: class Measure_buf_reader: public Measure_reader {
1.91 paf 289:
290: const char* buf; size_t size;
291: const String& file_name;
292:
293: size_t offset;
294:
1.77 paf 295: public:
1.91 paf 296: Measure_buf_reader(const char* abuf, size_t asize, const String& afile_name):
1.77 paf 297: buf(abuf), size(asize), file_name(afile_name), offset(0) {
298: }
299:
1.91 paf 300: override size_t read(const char* &abuf, size_t limit) {
1.77 paf 301: size_t to_read=min(limit, size-offset);
1.91 paf 302: abuf=buf+offset;
1.77 paf 303: offset+=to_read;
304: return to_read;
305: }
306:
1.174 moko 307: override void seek(uint64_t value) {
308: if(value>(uint64_t)size)
309: throw Exception(IMAGE_FORMAT, &file_name, "seek to %.15g failed: out of buffer (%.15g)", value, size);
310: offset=(size_t)value;
1.77 paf 311: }
312:
1.174 moko 313: override uint64_t tell() { return offset; }
314:
315: override uint64_t length() { return size; }
1.79 paf 316:
1.1 paf 317: };
1.77 paf 318:
1.1 paf 319:
1.169 moko 320: struct Measure_info {
321: ushort width;
322: ushort height;
323: Value** exif;
324: Value** xmp;
325: Charset* xmp_charset;
1.181 moko 326: bool video;
1.72 paf 327: };
328:
1.164 moko 329:
1.169 moko 330: inline ushort x_endian_to_ushort(uchar b0, uchar b1) {
331: return (ushort)((b1<<8) + b0);
332: }
333:
334: inline uint x_endian_to_uint(uchar b0, uchar b1, uchar b2, uchar b3) {
335: return (uint)(((((b3<<8) + b2)<<8)+b1)<<8)+b0;
336: }
337:
338: inline ushort endian_to_ushort(bool is_big, const uchar *b/* [2] */) {
339: return is_big ? x_endian_to_ushort(b[1], b[0]) : x_endian_to_ushort(b[0], b[1]);
340: }
341:
342: inline uint endian_to_uint(bool is_big, const uchar *b /* [4] */) {
343: 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]);
344: }
1.1 paf 345:
1.170 moko 346:
1.169 moko 347: ///*********************************************** JPEG
1.170 moko 348:
1.31 parser 349: struct JPG_Segment_head {
1.80 paf 350: uchar marker;
351: uchar code;
352: uchar length[2];
1.1 paf 353: };
1.21 paf 354: /// JPEG frame header
1.31 parser 355: struct JPG_Size_segment_body {
1.164 moko 356: char data; //< data precision of bits/sample
357: uchar height[2]; //< image height
358: uchar width[2]; //< image width
359: char numComponents; //< number of color components
1.1 paf 360: };
361:
1.80 paf 362: /// JPEG Exif TIFF Header
363: struct JPG_Exif_TIFF_header {
1.165 moko 364: char byte_align_identifier[2];
365: uchar signature[2]; // always 000A [or 0A00]
1.80 paf 366: uchar first_IFD_offset[4]; // Usually the first IFD starts immediately next to TIFF header, so this offset has value '0x00000008'.
367: };
368:
369: // JPEG Exif IFD start
1.91 paf 370: struct JPG_Exif_IFD_begin {
1.80 paf 371: uchar directory_entry_count[2]; // the number of directory entry contains in this IFD
372: };
373:
374: // TTTT ffff NNNNNNNN DDDDDDDD
375: struct JPG_Exif_IFD_entry {
376: uchar tag[2]; // Tag number, this shows a kind of data
377: uchar format[2]; // data format
378: uchar components_count[4]; // number of components
379: uchar value_or_offset_to_it[4]; // data value or offset to data value
380: };
381:
382: #define JPG_IFD_TAG_EXIF_OFFSET 0x8769
383:
1.118 misha 384: #define JPG_IFD_TAG_EXIF_GPS_OFFSET 0x8825
385:
1.89 paf 386: #define JPEG_EXIF_DATE_CHARS 20
387:
1.155 moko 388: static Value* parse_IFD_entry_formatted_one_value(bool is_big, ushort format, size_t component_size, const uchar *value) {
1.80 paf 389: switch(format) {
390: case 1: // unsigned byte
1.91 paf 391: return new VInt((uchar)value[0]);
1.80 paf 392: case 3: // unsigned short
1.91 paf 393: return new VInt(endian_to_ushort(is_big, value));
1.80 paf 394: case 4: // unsigned long
395: // 'double' because parser's Int is signed
1.91 paf 396: return new VDouble(endian_to_uint(is_big, value));
1.80 paf 397: case 5: // unsigned rational
398: {
399: uint numerator=endian_to_uint(is_big, value); value+=component_size/2;
400: uint denominator=endian_to_uint(is_big, value);
401: if(!denominator)
402: return 0;
1.91 paf 403: return new VDouble(((double)numerator)/denominator);
1.80 paf 404: }
405: case 6: // signed byte
1.91 paf 406: return new VInt((signed char)value[0]);
1.80 paf 407: case 8: // signed short
1.91 paf 408: return new VInt((signed short)endian_to_ushort(is_big, value));
1.80 paf 409: case 9: // signed long
1.91 paf 410: return new VInt((signed int)endian_to_uint(is_big, value));
1.80 paf 411: case 10: // signed rational
412: {
413: signed int numerator=(signed int)endian_to_uint(is_big, value); value+=component_size/2;
414: uint denominator=endian_to_uint(is_big, value);
415: if(!denominator)
416: return 0;
1.91 paf 417: return new VDouble(numerator/denominator);
1.80 paf 418: }
419: /*
420: case 11: // single float
1.120 misha 421: @todo
1.80 paf 422: case 12: // double float
1.120 misha 423: @todo
1.80 paf 424: */
425: };
426:
427: return 0;
428: }
429:
1.89 paf 430: // date.C
1.147 moko 431: tm cstr_to_time_t(char *, const char **);
1.89 paf 432:
1.155 moko 433: 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 434: if(format==2) { // ascii string, exception: the only type with varying size
1.91 paf 435: const char* cstr=(const char* )value;
436: size_t length=components_count;
1.89 paf 437: // Data format is "YYYY:MM:DD HH:MM:SS"+0x00, total 20bytes
1.155 moko 438: if(length==JPEG_EXIF_DATE_CHARS && isdigit((unsigned char)cstr[0]) && cstr[length-1]==0) {
1.106 paf 439: try {
1.183 moko 440: tm tmIn=cstr_to_time_t(pa_strdup(cstr), 0);
1.146 moko 441: return new VDate(tmIn);
1.106 paf 442: }
443: catch(...) { /*ignore bad date times*/ }
1.89 paf 444: }
445:
1.123 misha 446: return new VString(*new String(cstr, String::L_TAINTED));
1.80 paf 447: }
448:
449: if(components_count==1)
1.91 paf 450: return parse_IFD_entry_formatted_one_value(is_big, format, component_size, value);
1.80 paf 451:
1.91 paf 452: VHash* result=new VHash;
453: HashStringValue& hash=result->hash();
1.80 paf 454: for(uint i=0; i<components_count; i++, value+=component_size) {
1.91 paf 455: hash.put(
1.185 moko 456: pa_uitoa(i),
1.91 paf 457: parse_IFD_entry_formatted_one_value(is_big, format, component_size, value));
1.80 paf 458: }
459:
1.91 paf 460: return result;
1.80 paf 461: }
462:
1.176 moko 463: static Value* parse_IFD_entry_value(bool is_big, Measure_reader& reader, uint64_t tiff_base, JPG_Exif_IFD_entry& entry) {
1.80 paf 464: size_t format2component_size[]={
465: 0, // undefined
466: 1, // unsigned byte
467: 1, // ascii string
468: 2, // unsigned short
469: 4, // unsigned long
470: 8, // unsigned rational
471: 1, // signed byte
472: 0, // undefined
473: 2, // signed short
474: 4, // signed long
475: 8, // signed rational
476: /*
477: 4, // single float
478: 8, // double float
479: */
480: };
481:
482: ushort format=endian_to_ushort(is_big, entry.format);
483: if(format>=sizeof(format2component_size)/sizeof(format2component_size[0]))
484: return 0; // format out of range, ignoring
485:
486: size_t component_size=format2component_size[format];
487: if(component_size==0)
488: return 0; // undefined format
489:
490: // You can get the total data byte length by multiplies
491: // a 'bytes/components' value (see above chart) by number of components stored 'NNNNNNNN' area
492: uint components_count=endian_to_uint(is_big, entry.components_count);
1.121 misha 493: uint value_size=component_size*components_count;
1.80 paf 494: // If its size is over 4bytes, 'DDDDDDDD' contains the offset to data stored address
1.91 paf 495: Value* result;
1.80 paf 496:
497: if(value_size<=4)
1.155 moko 498: result=parse_IFD_entry_formatted_value(is_big, format, component_size, components_count, entry.value_or_offset_to_it);
1.80 paf 499: else {
1.174 moko 500: uint64_t remembered=reader.tell();
1.80 paf 501: {
1.174 moko 502: reader.seek(tiff_base+endian_to_uint(is_big, entry.value_or_offset_to_it));
1.91 paf 503: const char* value;
1.156 moko 504: if(reader.read(value, value_size)<value_size)
1.80 paf 505: return 0;
1.155 moko 506: result=parse_IFD_entry_formatted_value(is_big, format, component_size, components_count, (const uchar*)value);
1.80 paf 507: }
1.174 moko 508: reader.seek(remembered);
1.80 paf 509: }
510:
511: return result;
512: }
513:
1.176 moko 514: static void parse_IFD(HashStringValue& hash, bool is_big, Measure_reader& reader, uint64_t tiff_base, bool gps=false);
1.91 paf 515:
1.176 moko 516: 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 517: ushort tag=endian_to_ushort(is_big, entry.tag);
1.118 misha 518:
519: if(tag==JPG_IFD_TAG_EXIF_OFFSET || tag==JPG_IFD_TAG_EXIF_GPS_OFFSET){
1.174 moko 520: uint64_t remembered=reader.tell();
1.80 paf 521: {
1.174 moko 522: reader.seek(tiff_base+endian_to_uint(is_big, entry.value_or_offset_to_it));
1.118 misha 523: parse_IFD(hash, is_big, reader, tiff_base, (tag==JPG_IFD_TAG_EXIF_GPS_OFFSET)?true:gps);
1.80 paf 524: }
1.174 moko 525: reader.seek(remembered);
1.80 paf 526: return;
527: }
1.118 misha 528:
1.91 paf 529: if(Value* value=parse_IFD_entry_value(is_big, reader, tiff_base, entry)) {
1.190 moko 530: if(const char* name=(gps ? EXIF_gps_tag_value2name::instance().get(tag) : EXIF_tag_value2name::instance().get(tag)))
1.148 moko 531: hash.put(name, value);
1.80 paf 532: else
1.188 moko 533: hash.put(pa_uitoa((int)tag), value);
1.80 paf 534: }
1.1 paf 535: }
536:
1.176 moko 537: static void parse_IFD(HashStringValue& hash, bool is_big, Measure_reader& reader, uint64_t tiff_base, bool gps) {
1.91 paf 538: const char* buf;
539: if(reader.read(buf, sizeof(JPG_Exif_IFD_begin))<sizeof(JPG_Exif_IFD_begin))
1.80 paf 540: return;
1.91 paf 541: JPG_Exif_IFD_begin *start=(JPG_Exif_IFD_begin *)buf;
1.80 paf 542:
543: ushort directory_entry_count=endian_to_ushort(is_big, start->directory_entry_count);
544: for(int i=0; i<directory_entry_count; i++) {
545: if(reader.read(buf, sizeof(JPG_Exif_IFD_entry))<sizeof(JPG_Exif_IFD_entry))
546: return;
547:
1.118 misha 548: parse_IFD_entry(hash, is_big, reader, tiff_base, *(JPG_Exif_IFD_entry *)buf, gps);
1.80 paf 549: }
550: // then goes: LLLLLLLL Offset to next IFD [not going there]
551: }
552:
1.162 moko 553: static Value* parse_exif(Measure_reader& reader) {
1.91 paf 554: const char* buf;
1.80 paf 555:
1.175 moko 556: uint64_t tiff_base=reader.tell();
1.80 paf 557: if(reader.read(buf, sizeof(JPG_Exif_TIFF_header))<sizeof(JPG_Exif_TIFF_header))
558: return 0;
559:
560: JPG_Exif_TIFF_header *head=(JPG_Exif_TIFF_header *)buf;
561: bool is_big=head->byte_align_identifier[0]=='M'; // [M]otorola vs [I]ntel
562:
563: uint first_IFD_offset=endian_to_uint(is_big, head->first_IFD_offset);
1.174 moko 564: reader.seek(tiff_base+first_IFD_offset);
1.80 paf 565:
1.91 paf 566: VHash* vhash=new VHash;
1.80 paf 567:
568: // IFD
1.91 paf 569: parse_IFD(vhash->hash(), is_big, reader, tiff_base);
1.80 paf 570:
1.91 paf 571: return vhash;
1.80 paf 572: }
573:
1.163 moko 574: static Value* parse_xmp(Measure_reader& reader, ushort xmp_length, Measure_info &info) {
1.162 moko 575: const char* buf;
576: if(reader.read(buf, xmp_length)<xmp_length)
577: return 0;
1.163 moko 578:
579: String::C xmp = Charset::transcode(String::C(pa_strdup(buf, xmp_length), xmp_length), *info.xmp_charset, pa_thread_request().charsets.source());
580: return new VString(*new String(xmp, String::L_TAINTED));
1.162 moko 581: }
582:
583: static void measure_jpeg(const String& origin_string, Measure_reader& reader, Measure_info &info) {
1.2 paf 584: // JFIF format markers
1.80 paf 585: const uchar MARKER=0xFF;
586: const uchar CODE_SIZE_A=0xC0;
587: const uchar CODE_SIZE_B=0xC1;
588: const uchar CODE_SIZE_C=0xC2;
589: const uchar CODE_SIZE_D=0xC3;
1.162 moko 590: const uchar CODE_APP1=0xE1;
1.2 paf 591:
1.91 paf 592: const char* buf;
1.18 paf 593: const size_t prefix_size=2;
1.31 parser 594: if(reader.read(buf, prefix_size)<prefix_size)
1.155 moko 595: throw Exception(IMAGE_FORMAT, &origin_string, "not JPEG file - too small");
1.80 paf 596: uchar *signature=(uchar *)buf;
1.1 paf 597:
1.31 parser 598: if(!(signature[0]==0xFF && signature[1]==0xD8))
1.155 moko 599: throw Exception(IMAGE_FORMAT, &origin_string, "not JPEG file - wrong signature");
1.31 parser 600:
601: while(true) {
1.177 moko 602: uint64_t segment_base=reader.tell()+2/*marker,code*/;
1.31 parser 603: if(reader.read(buf, sizeof(JPG_Segment_head))<sizeof(JPG_Segment_head))
1.79 paf 604: break;
1.31 parser 605: JPG_Segment_head *head=(JPG_Segment_head *)buf;
606:
1.162 moko 607: // Verify that it's a valid segment.
1.31 parser 608: if(head->marker!=MARKER)
1.155 moko 609: throw Exception(IMAGE_FORMAT, &origin_string, "not JPEG file - marker not found");
1.79 paf 610:
1.162 moko 611: ushort segment_length=endian_to_ushort(true, head->length);
612:
1.79 paf 613: switch(head->code) {
1.162 moko 614: // http://dev.exiv2.org/projects/exiv2/wiki/The_Metadata_in_JPEG_files
615: case CODE_APP1:
616: {
617: const size_t EXIF_SIG_LEN=6; // Exif\0\0
618: const size_t XMP_SIG_LEN=29; // http://ns.adobe.com/xap/1.0/\0
619:
620: if(segment_length<EXIF_SIG_LEN+2 || reader.read(buf, EXIF_SIG_LEN)<EXIF_SIG_LEN)
621: break;
622: if(memcmp(buf, "Exif\0\0", EXIF_SIG_LEN)==0){
623: if(info.exif && !*info.exif) // backward compatibility: using first segment
624: *info.exif=parse_exif(reader);
625: break;
626: }
627:
628: if(memcmp(buf, "http:/", EXIF_SIG_LEN))
629: break;
630: if(segment_length<XMP_SIG_LEN+2 || reader.read(buf, XMP_SIG_LEN-EXIF_SIG_LEN)<XMP_SIG_LEN-EXIF_SIG_LEN)
631: break;
632: if(memcmp(buf, "/ns.adobe.com/xap/1.0/\0", XMP_SIG_LEN-EXIF_SIG_LEN)==0){
633: if(info.xmp && !*info.xmp) // backward compatibility: using first segment
1.163 moko 634: *info.xmp=parse_xmp(reader, segment_length - XMP_SIG_LEN - 2 /* segment_length */, info);
1.162 moko 635: }
636:
637: }
1.1 paf 638: break;
1.31 parser 639:
1.79 paf 640: case CODE_SIZE_A:
641: case CODE_SIZE_B:
642: case CODE_SIZE_C:
643: case CODE_SIZE_D:
644: {
645: // Segments that contain size info
646: if(reader.read(buf, sizeof(JPG_Size_segment_body))<sizeof(JPG_Size_segment_body))
1.187 moko 647: throw Exception(IMAGE_FORMAT, &origin_string, "not JPEG file - cannot fully read Size segment");
1.79 paf 648: JPG_Size_segment_body *body=(JPG_Size_segment_body *)buf;
649:
1.162 moko 650: info.width=endian_to_ushort(true, body->width);
651: info.height=endian_to_ushort(true, body->height);
652: }
1.80 paf 653: return;
1.79 paf 654: };
655:
1.174 moko 656: reader.seek(segment_base + segment_length);
1.31 parser 657: }
658:
1.155 moko 659: throw Exception(IMAGE_FORMAT, &origin_string, "broken JPEG file - size frame not found");
1.1 paf 660: }
661:
1.169 moko 662: ///*********************************************** TIFF
663:
1.165 moko 664: static bool parse_tiff_IFD(bool is_big, Measure_reader& reader, Measure_info &info) {
665: const char* buf;
666: if(reader.read(buf, sizeof(JPG_Exif_IFD_begin))<sizeof(JPG_Exif_IFD_begin))
667: return false;
668: JPG_Exif_IFD_begin *start=(JPG_Exif_IFD_begin *)buf;
669:
670: ushort directory_entry_count=endian_to_ushort(is_big, start->directory_entry_count);
671: for(int i=0; i<directory_entry_count; i++) {
672: if(reader.read(buf, sizeof(JPG_Exif_IFD_entry))<sizeof(JPG_Exif_IFD_entry))
673: return false;
674:
675: JPG_Exif_IFD_entry *entry=(JPG_Exif_IFD_entry *)buf;
676: ushort entry_tag=endian_to_ushort(is_big, entry->tag);
677:
678: if(entry_tag == 256 || entry_tag == 257){
679: ushort entry_format=endian_to_ushort(is_big, entry->format);
680: if(entry_format != 3 && entry_format != 4 || endian_to_uint(is_big, entry->components_count) != 1)
681: return false;
682: 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 683: (entry_tag == 256) ? info.width=(short)value : info.height=(short)value;
1.165 moko 684: if(info.width && info.height)
685: return true;
686: }
687: }
688:
689: return false;
690: // then goes: LLLLLLLL Offset to next IFD [not going there]
691: }
692:
693: static void measure_tiff(const String& origin_string, Measure_reader& reader, Measure_info &info) {
694: const char* buf;
695:
696: if(reader.read(buf, sizeof(JPG_Exif_TIFF_header))<sizeof(JPG_Exif_TIFF_header))
697: throw Exception(IMAGE_FORMAT, &origin_string, "not TIFF file - too small");
698:
699: JPG_Exif_TIFF_header *head=(JPG_Exif_TIFF_header *)buf;
700:
701: if(strncmp(head->byte_align_identifier, "II", 2)!=0 && strncmp(head->byte_align_identifier, "MM", 2)!=0)
702: throw Exception(IMAGE_FORMAT, &origin_string, "not TIFF file - wrong signature");
703:
704: bool is_big=head->byte_align_identifier[0]=='M'; // [M]otorola vs [I]ntel
705:
706: if(endian_to_ushort(is_big, head->signature) != 42)
707: throw Exception(IMAGE_FORMAT, &origin_string, "not TIFF file - wrong signature");
708:
1.174 moko 709: reader.seek(endian_to_uint(is_big, head->first_IFD_offset));
1.165 moko 710: if(!parse_tiff_IFD(is_big, reader, info))
711: throw Exception(IMAGE_FORMAT, &origin_string, "broken TIFF file - size field entry not found");
712: }
713:
1.169 moko 714:
715: ///*********************************************** GIF
716:
717: struct GIF_Header {
718: char signature[3]; // 'GIF'
719: char version[3];
720: uchar width[2];
721: uchar height[2];
722: char dif;
723: char fonColor;
724: char nulls;
725: };
726:
1.164 moko 727: static void measure_gif(const String& origin_string, Measure_reader& reader, ushort& width, ushort& height) {
728:
729: const char* buf;
730: const size_t head_size=sizeof(GIF_Header);
731: if(reader.read(buf, head_size)<head_size)
732: throw Exception(IMAGE_FORMAT, &origin_string, "not GIF file - too small");
733: GIF_Header *head=(GIF_Header *)buf;
734:
735: if(strncmp(head->signature, "GIF", 3)!=0)
736: throw Exception(IMAGE_FORMAT, &origin_string, "not GIF file - wrong signature");
737:
738: width=endian_to_ushort(false, head->width);
739: height=endian_to_ushort(false, head->height);
740: }
741:
1.169 moko 742:
743: ///*********************************************** PNG
744:
745: struct PNG_Header {
746: char dummy[12];
747: char signature[4]; //< must be "IHDR"
748: uchar high_width[2]; //< image width high bytes [we ignore for now]
749: uchar width[2]; //< image width low bytes
750: uchar high_height[2]; //< image height high bytes [we ignore for now]
751: uchar height[4]; //< image height
752: };
753:
1.152 moko 754: static void measure_png(const String& origin_string, Measure_reader& reader, ushort& width, ushort& height) {
1.72 paf 755:
1.91 paf 756: const char* buf;
1.102 paf 757: const size_t head_size=sizeof(PNG_Header);
758: if(reader.read(buf, head_size)<head_size)
1.152 moko 759: throw Exception(IMAGE_FORMAT, &origin_string, "not PNG file - too small");
1.72 paf 760: PNG_Header *head=(PNG_Header *)buf;
761:
762: if(strncmp(head->signature, "IHDR", 4)!=0)
1.152 moko 763: throw Exception(IMAGE_FORMAT, &origin_string, "not PNG file - wrong signature");
1.72 paf 764:
1.80 paf 765: width=endian_to_ushort(true, head->width);
766: height=endian_to_ushort(true, head->height);
1.72 paf 767: }
768:
1.169 moko 769:
770: ///*********************************************** BMP
771:
772: struct BMP_Header {
773: char signature[2]; // 'BM'
774: uchar file_size[4];
775: uchar reserved[4];
776: uchar bitmap_offset[4];
777: uchar header_size[4];
778: uchar width[2];
779: uchar high_width[2]; //< image width high bytes [we ignore for now]
780: uchar height[2];
781: uchar high_height[2]; //< image height high bytes [we ignore for now]
782: };
783:
1.164 moko 784: static void measure_bmp(const String& origin_string, Measure_reader& reader, ushort& width, ushort& height) {
785:
786: const char* buf;
787: const size_t head_size=sizeof(BMP_Header);
788: if(reader.read(buf, head_size)<head_size)
789: throw Exception(IMAGE_FORMAT, &origin_string, "not BMP file - too small");
790: BMP_Header *head=(BMP_Header *)buf;
791:
792: if(strncmp(head->signature, "BM", 2)!=0)
793: throw Exception(IMAGE_FORMAT, &origin_string, "not BMP file - wrong signature");
794:
1.174 moko 795: if((uint)reader.length() != endian_to_uint(false, head->file_size))
1.164 moko 796: throw Exception(IMAGE_FORMAT, &origin_string, "not BMP file - length header and file size do not match");
797:
798: width=endian_to_ushort(false, head->width);
799: height=endian_to_ushort(false, head->height);
800: }
801:
1.168 moko 802:
1.169 moko 803: ///*********************************************** WEBP
804:
805: struct WEBP_Header {
806: char signature_riff[4]; // 'RIFF'
807: uchar file_size[4];
808: char signature[4]; // 'WEBP'
809: char format[4]; // 'VP8 ' or 'VP8L' or 'VP8X'
810: };
811:
812: struct WEBP_VP8_Chunk {
813: uchar size[4];
814: char tag[3];
815: uchar signature[3]; // 0x9D 0x01 0x2A
816: uchar width[2]; // 14 bits each
817: uchar height[2]; // 14 bits each
818: };
819:
820: struct WEBP_VP8L_Chunk {
821: uchar size[4];
822: char signature; // 0x2F
823: uchar width_height[4]; // 14 bits each
824: };
825:
826: struct WEBP_X_Chunk {
827: uchar size[4];
828: char reserved[4];
829: uchar width[3];
830: uchar height[3];
831: };
832:
1.168 moko 833: static void measure_webp(const String& origin_string, Measure_reader& reader, ushort& width, ushort& height) {
834: const char* buf;
835:
836: if(reader.read(buf, sizeof(WEBP_Header))<sizeof(WEBP_Header))
837: throw Exception(IMAGE_FORMAT, &origin_string, "not WEBP file - too small");
838:
839: WEBP_Header *head=(WEBP_Header *)buf;
840:
841: if(strncmp(head->signature_riff, "RIFF", 4)!=0 || strncmp(head->signature, "WEBP", 4)!=0)
842: throw Exception(IMAGE_FORMAT, &origin_string, "not WEBP file - wrong signature");
843:
844: if(strncmp(head->format, "VP8 ", 4)==0){
845: if(reader.read(buf, sizeof(WEBP_VP8_Chunk))<sizeof(WEBP_VP8_Chunk))
846: throw Exception(IMAGE_FORMAT, &origin_string, "broken WEBP file - too small VP8 chunk");
847:
848: WEBP_VP8_Chunk *chunk=(WEBP_VP8_Chunk *)buf;
849: if (chunk->signature[0] != 0x9D || chunk->signature[1] != 0x01 || chunk->signature[2] != 0x2A)
850: throw Exception(IMAGE_FORMAT, &origin_string, "broken WEBP file - wrong VP8 chunk signature");
851:
852: width=endian_to_ushort(false, chunk->width) & 0x3FFF;
853: height=endian_to_ushort(false, chunk->height) & 0x3FFF;
854: } else if(strncmp(head->format, "VP8L", 4)==0){
855: if(reader.read(buf, sizeof(WEBP_VP8L_Chunk))<sizeof(WEBP_VP8L_Chunk))
856: throw Exception(IMAGE_FORMAT, &origin_string, "broken WEBP file - too small VP8L chunk");
857:
858: WEBP_VP8L_Chunk *chunk=(WEBP_VP8L_Chunk *)buf;
859: if(chunk->signature != 0x2F)
860: throw Exception(IMAGE_FORMAT, &origin_string, "broken WEBP file - wrong VP8L chunk signature");
861:
862: uint wh=endian_to_uint(false, chunk->width_height);
863: width=(wh & 0x3FFF) + 1;
864: height=((wh >> 14) & 0x3FFF) + 1;
865: } else if (strncmp(head->format, "VP8X", 4)==0){
866: if(reader.read(buf, sizeof(WEBP_X_Chunk))<sizeof(WEBP_X_Chunk))
867: throw Exception(IMAGE_FORMAT, &origin_string, "broken WEBP file - too small VP8X chunk");
868:
869: WEBP_X_Chunk *chunk=(WEBP_X_Chunk *)buf;
870:
871: width=endian_to_ushort(false, chunk->width) + 1; // we ignore third byte to simplify code
872: height=endian_to_ushort(false, chunk->height) + 1; // we ignore third byte to simplify code
873: } else throw Exception(IMAGE_FORMAT, &origin_string, "broken WEBP file - invalid chunk signature");
874: }
875:
1.170 moko 876:
877: ///*********************************************** MP4
878:
879: struct MP4_Header {
880: uchar size[4];
881: char signature[4]; // 'ftyp' in first chunk
882: };
883:
1.173 moko 884: struct MP4_ExtSize {
885: uchar high[4];
886: uchar low[4];
887: };
888:
889: struct MP4_Tkhd {
890: uchar width[4];
891: uchar height[4];
892: };
893:
1.174 moko 894: 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 895: for(bool first=anext==0;;){
896: const char* buf;
1.174 moko 897: uint64_t next=reader.tell();
1.173 moko 898:
899: if(reader.read(buf, sizeof(MP4_Header))<sizeof(MP4_Header))
1.172 moko 900: throw Exception(IMAGE_FORMAT, &origin_string, first ? "not MP4 file - too small" : "broken MP4 file - truncated chunk header");
1.170 moko 901:
902: MP4_Header *head=(MP4_Header *)buf;
1.174 moko 903: uint64_t size=endian_to_uint(true, head->size);
1.170 moko 904:
1.173 moko 905: if(size==1){
906: if(reader.read(buf, sizeof(MP4_ExtSize))<sizeof(MP4_ExtSize))
907: throw Exception(IMAGE_FORMAT, &origin_string, "broken MP4 file - truncated chunk extended size header");
908: MP4_ExtSize *ext_size=(MP4_ExtSize *)buf;
1.174 moko 909: size=((uint64_t)endian_to_uint(true, ext_size->high) << 32) + endian_to_uint(true, ext_size->low);
1.173 moko 910: }
911: next+=size;
1.170 moko 912:
913: if(first){
914: if(strncmp(head->signature, "ftyp", 4)!=0)
915: throw Exception(IMAGE_FORMAT, &origin_string, "not MP4 file - wrong signature");
916: first=false;
1.174 moko 917: anext=reader.length(); // to avoid reading beyond EOF
1.170 moko 918: } else if(strncmp(head->signature, "moov", 4)==0 || strncmp(head->signature, "mdia", 4)==0 || strncmp(head->signature, "trak", 4)==0) {
919: if(measure_mp4(origin_string, reader, width, height, next, lastTkhd))
920: return true;
921: } else if(strncmp(head->signature, "tkhd", 4)==0) {
922: if(size>8){
1.174 moko 923: reader.seek(next-8);
1.173 moko 924: if(reader.read(lastTkhd, sizeof(MP4_Tkhd))<sizeof(MP4_Tkhd))
1.170 moko 925: throw Exception(IMAGE_FORMAT, &origin_string, "broken MP4 file - bad tkhd chunk");
926: }
927: } else if (strncmp(head->signature, "hdlr", 4)==0) {
928: if(size>12){
929: const char* hdlr;
930: if(reader.read(hdlr, 12)<12)
931: throw Exception(IMAGE_FORMAT, &origin_string, "broken MP4 file - bad hdlr chunk");
1.173 moko 932: if(lastTkhd && strncmp(hdlr+8, "vide", 4)==0) {
933: MP4_Tkhd *tkhd=(MP4_Tkhd *)lastTkhd;
934: width=endian_to_ushort(true, tkhd->width);
935: height=endian_to_ushort(true, tkhd->height);
1.170 moko 936: return true;
937: }
938: }
939: }
940: if(anext && next>=anext)
941: break;
1.174 moko 942: reader.seek(next);
1.170 moko 943: }
944: return false;
945: }
946:
947: static void measure_mp4(const String& origin_string, Measure_reader& reader, ushort& width, ushort& height) {
948: if(!measure_mp4(origin_string, reader, width, height, 0))
949: throw Exception(IMAGE_FORMAT, &origin_string, "unsupported MP4 file - size not found");
950: }
951:
1.169 moko 952: ///*********************************************** measure center
1.1 paf 953:
1.162 moko 954: static void measure(const String& file_name, Measure_reader& reader, Measure_info &info) {
1.128 misha 955: const char* file_name_cstr=file_name.taint_cstr(String::L_FILE_SPEC);
1.91 paf 956: if(const char* cext=strrchr(file_name_cstr, '.')) {
1.1 paf 957: cext++;
958: if(strcasecmp(cext, "GIF")==0)
1.162 moko 959: measure_gif(file_name, reader, info.width, info.height);
1.165 moko 960: else if(strcasecmp(cext, "JPG")==0 || strcasecmp(cext, "JPEG")==0)
1.162 moko 961: measure_jpeg(file_name, reader, info);
1.72 paf 962: else if(strcasecmp(cext, "PNG")==0)
1.162 moko 963: measure_png(file_name, reader, info.width, info.height);
1.164 moko 964: else if(strcasecmp(cext, "BMP")==0)
965: measure_bmp(file_name, reader, info.width, info.height);
1.168 moko 966: else if(strcasecmp(cext, "WEBP")==0)
967: measure_webp(file_name, reader, info.width, info.height);
1.165 moko 968: else if(strcasecmp(cext, "TIF")==0 || strcasecmp(cext, "TIFF")==0)
969: measure_tiff(file_name, reader, info);
1.171 moko 970: else if(strcasecmp(cext, "MP4")==0 || strcasecmp(cext, "MOV")==0)
1.181 moko 971: if(info.video)
972: measure_mp4(file_name, reader, info.width, info.height);
973: else
974: throw Exception(IMAGE_FORMAT, &file_name, "handling disabled for file name extension '%s'", cext);
1.1 paf 975: else
1.181 moko 976: throw Exception(IMAGE_FORMAT, &file_name, "unhandled file name extension '%s'", cext);
1.1 paf 977: } else
1.187 moko 978: throw Exception(IMAGE_FORMAT, &file_name, "cannot determine file type - no file name extension");
1.1 paf 979: }
980:
1.77 paf 981: // methods
1.1 paf 982:
1.152 moko 983: static void file_measure_action(struct stat& /*finfo*/, int f, const String& file_spec, void *context) {
984: Measure_file_reader reader(f, file_spec);
1.162 moko 985: measure(file_spec, reader, *static_cast<Measure_info *>(context));
1.1 paf 986: }
987:
1.91 paf 988: static void _measure(Request& r, MethodParams& params) {
989: Value& data=params.as_no_junction(0, "data must not be code");
1.1 paf 990:
1.91 paf 991: Value* exif=0;
1.162 moko 992: Value* xmp=0;
1.181 moko 993: Measure_info info={ 0, 0, 0, 0, &pa_UTF8_charset, false };
1.163 moko 994:
995: if(params.count()>1)
996: if(HashStringValue* options=params.as_hash(1, "methods options")) {
997: int valid_options=0;
998: for(HashStringValue::Iterator i(*options); i; i.next() ){
999: String::Body key=i.key();
1000: Value* value=i.value();
1001: if(key == "exif") {
1002: if(r.process(*value).as_bool())
1003: info.exif=&exif;
1004: valid_options++;
1005: }
1006: if(key == "xmp") {
1007: if(r.process(*value).as_bool())
1008: info.xmp=&xmp;
1009: valid_options++;
1010: }
1011: if(key == "xmp-charset") {
1012: info.xmp_charset=&pa_charsets.get(value->as_string());
1013: valid_options++;
1014: }
1.181 moko 1015: if(key == "video") {
1016: info.video=r.process(*value).as_bool();
1017: valid_options++;
1018: }
1.163 moko 1019: }
1020: if(valid_options!=options->count())
1021: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1022: }
1.162 moko 1023:
1.91 paf 1024: const String* file_name;
1.162 moko 1025:
1026: if(file_name=data.get_string()) {
1.167 moko 1027: file_read_action_under_lock(r.full_disk_path(*file_name), "measure", file_measure_action, &info);
1.1 paf 1028: } else {
1.182 moko 1029: VFile* vfile=data.as_vfile();
1.91 paf 1030: file_name=&vfile->fields().get(name_name)->as_string();
1.162 moko 1031: Measure_buf_reader reader(vfile->value_ptr(), vfile->value_size(), *file_name);
1032: measure(*file_name, reader, info);
1.1 paf 1033: }
1034:
1.162 moko 1035: GET_SELF(r, VImage).set(file_name, info.width, info.height, 0, exif, xmp);
1.1 paf 1036: }
1037:
1.161 moko 1038: static void append_attrib_pair(String &tag, String::Body key, Value* value){
1039: // skip border attribute with empty value
1040: if(key=="border" && !value->is_defined())
1.4 paf 1041: return;
1042:
1.133 misha 1043: // src="a.gif" width="123" ismap[=-1]
1.161 moko 1044: tag << " " << key;
1.91 paf 1045: if(value->is_string() || value->as_int()>=0)
1.161 moko 1046: tag << "=\"" << value->as_string() << "\"";
1.3 paf 1047: }
1.161 moko 1048:
1.91 paf 1049: static void _html(Request& r, MethodParams& params) {
1050: String tag;
1.3 paf 1051: tag << "<img";
1.4 paf 1052:
1.91 paf 1053: const HashStringValue& fields=GET_SELF(r, VImage).fields();
1054: HashStringValue* attribs=0;
1.4 paf 1055:
1.91 paf 1056: if(params.count()) {
1.69 paf 1057: // for backward compatibility: someday was ^html{}
1.154 moko 1058: Value& vattribs=r.process(params[0]);
1.145 moko 1059: if(!vattribs.is_string()) { // allow empty
1.100 paf 1060: if((attribs=vattribs.get_hash())) {
1.161 moko 1061: for(HashStringValue::Iterator i(*attribs); i; i.next() )
1062: append_attrib_pair(tag, i.key(), i.value());
1.39 parser 1063: } else
1.155 moko 1064: throw Exception(PARSER_RUNTIME, 0, "attributes must be hash");
1.145 moko 1065: }
1.39 parser 1066: }
1.4 paf 1067:
1.161 moko 1068: for(HashStringValue::Iterator i(fields); i; i.next() ){
1069: String::Body key=i.key();
1070: // skip user-specified attributes
1071: if(attribs && attribs->get(key))
1072: continue;
1073: // allow only html attributes (to exclude exif, line-*)
1074: if(key=="src" || key=="width" || key=="height" || key=="border")
1075: append_attrib_pair(tag, key, i.value());
1.91 paf 1076: }
1.161 moko 1077:
1.6 paf 1078: tag << " />";
1.157 moko 1079: r.write(tag);
1.3 paf 1080: }
1.8 paf 1081:
1.68 paf 1082: /// @test wrap FILE to auto-object
1.155 moko 1083: static gdImage* load(Request& r, const String& file_name){
1.167 moko 1084: const char* file_name_cstr=r.full_disk_path(file_name).taint_cstr(String::L_FILE_SPEC);
1.159 moko 1085: if(FILE *f=pa_fopen(file_name_cstr, "rb")) {
1.91 paf 1086: gdImage* image=new gdImage;
1087: bool ok=image->CreateFromGif(f);
1.16 paf 1088: fclose(f);
1.23 paf 1089: if(!ok)
1.155 moko 1090: throw Exception(IMAGE_FORMAT, &file_name, "is not in GIF format");
1.91 paf 1091: return image;
1.16 paf 1092: } else {
1.187 moko 1093: throw Exception("file.missing", 0, "cannot open '%s'", file_name_cstr);
1.16 paf 1094: }
1095: }
1096:
1097:
1.91 paf 1098: static void _load(Request& r, MethodParams& params) {
1.116 misha 1099: const String& file_name=params.as_string(0, FILE_NAME_MUST_NOT_BE_CODE);
1.6 paf 1100:
1.91 paf 1101: gdImage* image=load(r, file_name);
1102: GET_SELF(r, VImage).set(&file_name, image->SX(), image->SY(), image);
1.6 paf 1103: }
1104:
1.91 paf 1105: static void _create(Request& r, MethodParams& params) {
1106: int width=params.as_int(0, "width must be int", r);
1107: int height=params.as_int(1, "height must be int", r);
1.8 paf 1108: int bgcolor_value=0xffFFff;
1.91 paf 1109: if(params.count()>2)
1110: bgcolor_value=params.as_int(2, "color must be int", r);
1111: gdImage* image=new gdImage;
1112: image->Create(width, height);
1113: image->FilledRectangle(0, 0, width-1, height-1, image->Color(bgcolor_value));
1114: GET_SELF(r, VImage).set(0, width, height, image);
1.6 paf 1115: }
1116:
1.91 paf 1117: static void _gif(Request& r, MethodParams& params) {
1.108 paf 1118: gdImage& image=GET_SELF(r, VImage).image();
1.6 paf 1119:
1.138 misha 1120: const String *file_name=params.count()>0?¶ms.as_string(0, FILE_NAME_MUST_BE_STRING):0;
1.10 paf 1121:
1.108 paf 1122: gdBuf buf=image.Gif();
1.6 paf 1123:
1.91 paf 1124: VFile& vfile=*new VFile;
1.137 misha 1125:
1.142 moko 1126: vfile.set_binary(false/*not tainted*/, (const char *)buf.ptr, buf.size, file_name, new VString(*new String("image/gif")));
1.137 misha 1127:
1.157 moko 1128: r.write(vfile);
1.6 paf 1129: }
1130:
1.91 paf 1131: static void _line(Request& r, MethodParams& params) {
1.108 paf 1132: gdImage& image=GET_SELF(r, VImage).image();
1.12 paf 1133:
1.108 paf 1134: image.Line(
1.91 paf 1135: params.as_int(0, "x0 must be int", r),
1136: params.as_int(1, "y0 must be int", r),
1137: params.as_int(2, "x1 must be int", r),
1138: params.as_int(3, "y1 must be int", r),
1.108 paf 1139: image.Color(params.as_int(4, "color must be int", r)));
1.13 paf 1140: }
1141:
1.91 paf 1142: static void _fill(Request& r, MethodParams& params) {
1.108 paf 1143: gdImage& image=GET_SELF(r, VImage).image();
1.12 paf 1144:
1.108 paf 1145: image.Fill(
1.91 paf 1146: params.as_int(0, "x must be int", r),
1147: params.as_int(1, "y must be int", r),
1.108 paf 1148: image.Color(params.as_int(2, "color must be int", r)));
1.13 paf 1149: }
1150:
1.91 paf 1151: static void _rectangle(Request& r, MethodParams& params) {
1.108 paf 1152: gdImage& image=GET_SELF(r, VImage).image();
1.13 paf 1153:
1.108 paf 1154: image.Rectangle(
1.91 paf 1155: params.as_int(0, "x0 must be int", r),
1156: params.as_int(1, "y0 must be int", r),
1157: params.as_int(2, "x1 must be int", r),
1158: params.as_int(3, "y1 must be int", r),
1.108 paf 1159: image.Color(params.as_int(4, "color must be int", r)));
1.13 paf 1160: }
1161:
1.91 paf 1162: static void _bar(Request& r, MethodParams& params) {
1.108 paf 1163: gdImage& image=GET_SELF(r, VImage).image();
1.13 paf 1164:
1.108 paf 1165: image.FilledRectangle(
1.91 paf 1166: params.as_int(0, "x0 must be int", r),
1167: params.as_int(1, "y0 must be int", r),
1168: params.as_int(2, "x1 must be int", r),
1169: params.as_int(3, "y1 must be int", r),
1.108 paf 1170: image.Color(params.as_int(4, "color must be int", r)));
1.13 paf 1171: }
1172:
1.44 parser 1173: #ifndef DOXYGEN
1.155 moko 1174: static void add_point(Table::element_type row, gdImage::Point **p) {
1.110 paf 1175: if(row->count()!=2)
1.155 moko 1176: throw Exception(0, 0, "coordinates table must contain two columns: x and y values");
1.91 paf 1177: (**p).x=row->get(0)->as_int();
1178: (**p).y=row->get(1)->as_int();
1.44 parser 1179: (*p)++;
1180: }
1181: #endif
1.135 misha 1182: #ifndef DOXYGEN
1.155 moko 1183: static void add_point(int x, int y, gdImage::Point **p) {
1.135 misha 1184: (**p).x=x;
1185: (**p).y=y;
1186: (*p)++;
1187: }
1188: #endif
1.91 paf 1189: static void _replace(Request& r, MethodParams& params) {
1.135 misha 1190: int src_color=params.as_int(0, "src color must be int", r);
1191: int dest_color=params.as_int(1, "dest color must be int", r);
1192:
1.108 paf 1193: gdImage& image=GET_SELF(r, VImage).image();
1.13 paf 1194:
1.135 misha 1195: gdImage::Point* all_p=0;
1196: size_t count=0;
1197: if(params.count() == 3){
1.180 moko 1198: if(Table* table=params.as_table(2, "coordinates")){
1199: count=table->count();
1200: all_p=new(PointerFreeGC) gdImage::Point[count];
1201: gdImage::Point* add_p=all_p;
1202: table->for_each(add_point, &add_p);
1203: }
1.135 misha 1204: } else {
1205: int max_x=image.SX()-1;
1206: int max_y=image.SY()-1;
1207: if(max_x > 0 && max_y > 0){
1208: count=4;
1209: all_p=new(PointerFreeGC) gdImage::Point[count];
1210: gdImage::Point* add_p=all_p;
1211: add_point(0, 0, &add_p);
1212: add_point(max_x, 0, &add_p);
1213: add_point(max_x, max_y, &add_p);
1214: add_point(0, max_y, &add_p);
1215: }
1216: }
1.13 paf 1217:
1.135 misha 1218: if(count)
1219: image.FilledPolygonReplaceColor(all_p, count, image.Color(src_color), image.Color(dest_color));
1.13 paf 1220: }
1221:
1.91 paf 1222: static void _polyline(Request& r, MethodParams& params) {
1.108 paf 1223: gdImage& image=GET_SELF(r, VImage).image();
1.13 paf 1224:
1.180 moko 1225: if(Table* table=params.as_table(1, "coordinates")){
1226: gdImage::Point* all_p=new(PointerFreeGC) gdImage::Point[table->count()];
1227: gdImage::Point *add_p=all_p;
1228: table->for_each(add_point, &add_p);
1229: image.Polygon(all_p, table->count(), image.Color(params.as_int(0, "color must be int", r)), false/*not closed*/);
1230: }
1.44 parser 1231: }
1232:
1.91 paf 1233: static void _polygon(Request& r, MethodParams& params) {
1.108 paf 1234: gdImage& image=GET_SELF(r, VImage).image();
1.13 paf 1235:
1.180 moko 1236: if(Table* table=(Table*)params.as_table(1, "coordinates")){
1237: gdImage::Point* all_p=new(PointerFreeGC) gdImage::Point[table->count()];
1238: gdImage::Point *add_p=all_p;
1239: table->for_each(add_point, &add_p);
1240: image.Polygon(all_p, table->count(), image.Color(params.as_int(0, "color must be int", r)));
1241: }
1.13 paf 1242: }
1243:
1.91 paf 1244: static void _polybar(Request& r, MethodParams& params) {
1.108 paf 1245: gdImage& image=GET_SELF(r, VImage).image();
1.13 paf 1246:
1.180 moko 1247: if(Table* table=(Table*)params.as_table(1, "coordinates")){
1248: gdImage::Point* all_p=new(PointerFreeGC) gdImage::Point[table->count()];
1249: gdImage::Point *add_p=all_p;
1250: table->for_each(add_point, &add_p);
1251: image.FilledPolygon(all_p, table->count(), image.Color(params.as_int(0, "color must be int", r)));
1252: }
1.12 paf 1253: }
1254:
1.16 paf 1255: // font
1256:
1.85 paf 1257: #define Y(y)(y+index*height)
1.21 paf 1258:
1.91 paf 1259: // Font class
1260:
1.155 moko 1261: Font::Font(Charset& asource_charset, const String& aalphabet, gdImage* aifont, int aheight, int amonospace, int aspacebarspace, int aletterspacing):
1.158 moko 1262: letterspacing(aletterspacing),
1.132 misha 1263: height(aheight),
1264: monospace(amonospace),
1265: spacebarspace(aspacebarspace),
1.100 paf 1266: ifont(aifont),
1.158 moko 1267: alphabet(aalphabet),
1268: fsource_charset(asource_charset){
1.132 misha 1269:
1270: if(fsource_charset.isUTF8()){
1271: size_t index=0;
1272: for(UTF8_string_iterator i(alphabet); i.has_next(); )
1273: fletter2index.put_dont_replace(i.next(), index++);
1274: }
1.91 paf 1275: }
1276:
1277: /* ******************************** char ********************************** */
1278:
1279: size_t Font::index_of(char ch) {
1280: if(ch==' ') return STRING_NOT_FOUND;
1281: return alphabet.pos(ch);
1282: }
1283:
1.132 misha 1284: size_t Font::index_of(XMLCh ch) {
1285: if(ch==' ') return STRING_NOT_FOUND;
1286: return fletter2index.get(ch);
1287: }
1288:
1.91 paf 1289: int Font::index_width(size_t index) {
1290: if(index==STRING_NOT_FOUND)
1291: return spacebarspace;
1292: int tr=ifont->GetTransparent();
1293: for(int x=ifont->SX()-1; x>=0; x--) {
1294: for(int y=0; y<height; y++)
1295: if(ifont->GetPixel(x, Y(y))!=tr)
1296: return x+1;
1.16 paf 1297: }
1.91 paf 1298: return 0;
1299: }
1300:
1.108 paf 1301: void Font::index_display(gdImage& image, int x, int y, size_t index){
1.91 paf 1302: if(index!=STRING_NOT_FOUND)
1.108 paf 1303: ifont->Copy(image, x, y, 0, Y(0), index_width(index), height);
1.91 paf 1304: }
1305:
1306: /* ******************************** string ********************************** */
1307:
1308: int Font::step_width(int index) {
1.125 misha 1309: return letterspacing + (monospace ? monospace : index_width(index));
1.91 paf 1310: }
1311:
1312: // counts trailing letter_spacing, consider this OK. useful for contiuations
1313: int Font::string_width(const String& s){
1314: const char* cstr=s.cstr();
1315: int result=0;
1.132 misha 1316:
1317: if(fsource_charset.isUTF8()){
1318: for(UTF8_string_iterator i(s); i.has_next(); )
1319: result+=step_width(index_of(i.next()));
1320: } else {
1321: for(const char* current=cstr; *current; current++)
1322: result+=step_width(index_of(*current));
1323: }
1324:
1.91 paf 1325: return result;
1326: }
1327:
1.108 paf 1328: void Font::string_display(gdImage& image, int x, int y, const String& s){
1.91 paf 1329: const char* cstr=s.cstr();
1.132 misha 1330:
1331: if(fsource_charset.isUTF8()){
1332: for(UTF8_string_iterator i(s); i.has_next(); ){
1333: size_t index=index_of(i.next());
1334: index_display(image, x, y, index);
1335: x+=step_width(index);
1336: }
1337: } else {
1338: for(const char* current=cstr; *current; current++) {
1339: size_t index=index_of(*current);
1340: index_display(image, x, y, index);
1341: x+=step_width(index);
1342: }
1.87 paf 1343: }
1.91 paf 1344: }
1.87 paf 1345:
1.91 paf 1346: //
1.35 parser 1347:
1.16 paf 1348:
1.91 paf 1349: static void _font(Request& r, MethodParams& params) {
1350: const String& alphabet=params.as_string(0, "alphabet must not be code");
1.131 misha 1351: size_t alphabet_length=alphabet.length(r.charsets.source());
1352: if(!alphabet_length)
1.155 moko 1353: throw Exception(PARSER_RUNTIME, 0, "alphabet must not be empty");
1.84 paf 1354:
1.125 misha 1355: gdImage* image=load(r, params.as_string(1, FILE_NAME_MUST_NOT_BE_CODE));
1356:
1.126 misha 1357: int spacebar_width=image->SX();
1.125 misha 1358: int monospace_width=0; // proportional
1359: int letter_spacing=1;
1360: if(params.count()>2){
1.144 moko 1361: if(HashStringValue* options=params[2].get_hash()){
1.125 misha 1362: // third option is hash
1363: if(params.count()>3)
1.144 moko 1364: throw Exception(PARSER_RUNTIME, 0, "too many params were specified");
1.125 misha 1365: int valid_options=0;
1366: if(Value* vspacebar_width=options->get(spacebar_width_name)){
1367: valid_options++;
1.153 moko 1368: spacebar_width=r.process(*vspacebar_width).as_int();
1.125 misha 1369: }
1370: if(Value* vmonospace_width=options->get(monospace_width_name)){
1371: valid_options++;
1.153 moko 1372: monospace_width=r.process(*vmonospace_width).as_int();
1.125 misha 1373: if(!monospace_width)
1374: monospace_width=image->SX();
1375: }
1376: if(Value* vletter_spacing=options->get(letter_spacing_name)){
1377: valid_options++;
1.153 moko 1378: letter_spacing=r.process(*vletter_spacing).as_int();
1.125 misha 1379: }
1380: if(valid_options!=options->count())
1.134 misha 1381: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.125 misha 1382: } else {
1383: // backward
1.144 moko 1384: spacebar_width=params.as_int(2, "param must be int or hash", r);
1.125 misha 1385: if(params.count()>3) {
1386: monospace_width=params.as_int(3, "monospace_width must be int", r);
1387: if(!monospace_width)
1388: monospace_width=image->SX();
1389: }
1390: }
1391: }
1392:
1.131 misha 1393: if(int remainder=image->SY() % alphabet_length)
1.155 moko 1394: 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 1395:
1.155 moko 1396: 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 1397: }
1398:
1.91 paf 1399: static void _text(Request& r, MethodParams& params) {
1400: int x=params.as_int(0, "x must be int", r);
1401: int y=params.as_int(1, "y must be int", r);
1402: const String& s=params.as_string(2, "text must not be code");
1.16 paf 1403:
1.91 paf 1404: VImage& vimage=GET_SELF(r, VImage);
1.108 paf 1405: vimage.font().string_display(vimage.image(), x, y, s);
1.16 paf 1406: }
1407:
1.91 paf 1408: static void _length(Request& r, MethodParams& params) {
1409: const String& s=params.as_string(0, "text must not be code");
1.47 parser 1410:
1.91 paf 1411: VImage& vimage=GET_SELF(r, VImage);
1.157 moko 1412: r.write(*new VInt(vimage.font().string_width(s)));
1.47 parser 1413: }
1414:
1.91 paf 1415: static void _arc(Request& r, MethodParams& params) {
1.108 paf 1416: gdImage& image=GET_SELF(r, VImage).image();
1.48 parser 1417:
1.108 paf 1418: image.Arc(
1.91 paf 1419: params.as_int(0, "center_x must be int", r),
1420: params.as_int(1, "center_y must be int", r),
1421: params.as_int(2, "width must be int", r),
1422: params.as_int(3, "height must be int", r),
1423: params.as_int(4, "start degrees must be int", r),
1424: params.as_int(5, "end degrees must be int", r),
1.108 paf 1425: image.Color(params.as_int(6, "cx must be int", r)));
1.48 parser 1426: }
1427:
1.91 paf 1428: static void _sector(Request& r, MethodParams& params) {
1.108 paf 1429: gdImage& image=GET_SELF(r, VImage).image();
1.49 parser 1430:
1.108 paf 1431: image.Sector(
1.91 paf 1432: params.as_int(0, "center_x must be int", r),
1433: params.as_int(1, "center_y must be int", r),
1434: params.as_int(2, "width must be int", r),
1435: params.as_int(3, "height must be int", r),
1436: params.as_int(4, "start degrees must be int", r),
1437: params.as_int(5, "end degrees must be int", r),
1.108 paf 1438: image.Color(params.as_int(6, "color must be int", r)));
1.49 parser 1439: }
1440:
1.91 paf 1441: static void _circle(Request& r, MethodParams& params) {
1.108 paf 1442: gdImage& image=GET_SELF(r, VImage).image();
1.48 parser 1443:
1.91 paf 1444: int size=params.as_int(2, "radius must be int", r)*2;
1.108 paf 1445: image.Arc(
1.91 paf 1446: params.as_int(0, "center_x must be int", r),
1447: params.as_int(1, "center_y must be int", r),
1.50 parser 1448: size, //w
1449: size, //h
1.48 parser 1450: 0, //s
1451: 360, //e
1.108 paf 1452: image.Color(params.as_int(3, "color must be int", r)));
1.48 parser 1453: }
1454:
1.108 paf 1455: gdImage& as_image(MethodParams& params, int index, const char* msg) {
1.91 paf 1456: Value& value=params.as_no_junction(index, msg);
1.53 parser 1457:
1.186 moko 1458: if(VImage* vimage=dynamic_cast<VImage *>(&value)) {
1459: return vimage->image();
1.75 paf 1460: } else
1.155 moko 1461: throw Exception(PARSER_RUNTIME, 0, msg);
1.53 parser 1462: }
1463:
1.91 paf 1464: static void _copy(Request& r, MethodParams& params) {
1.108 paf 1465: gdImage& dest=GET_SELF(r, VImage).image();
1.53 parser 1466:
1.108 paf 1467: gdImage& src=as_image(params, 0, "src must be image");
1.53 parser 1468:
1.91 paf 1469: int sx=params.as_int(1, "src_x must be int", r);
1470: int sy=params.as_int(2, "src_y must be int", r);
1471: int sw=params.as_int(3, "src_w must be int", r);
1472: int sh=params.as_int(4, "src_h must be int", r);
1473: int dx=params.as_int(5, "dest_x must be int", r);
1474: int dy=params.as_int(6, "dest_y must be int", r);
1475: if(params.count()>1+2+2+2) {
1476: int dw=params.as_int(1+2+2+2, "dest_w must be int", r);
1477: int dh=(int)(params.count()>1+2+2+2+1?
1478: params.as_int(1+2+2+2+1, "dest_h must be int", r):sh*(((double)dw)/((double)sw)));
1479: int tolerance=params.count()>1+2+2+2+2?
1480: params.as_int(1+2+2+2+2, "tolerance must be int", r):150;
1.53 parser 1481:
1.108 paf 1482: src.CopyResampled(dest, dx, dy, sx, sy, dw, dh, sw, sh, tolerance);
1.53 parser 1483: } else
1.108 paf 1484: src.Copy(dest, dx, dy, sx, sy, sw, sh);
1485: }
1486:
1487: static void _pixel(Request& r, MethodParams& params) {
1488: gdImage& image=GET_SELF(r, VImage).image();
1489:
1.109 paf 1490: int x=params.as_int(0, "x must be int", r);
1491: int y=params.as_int(1, "y must be int", r);
1492:
1493: if(params.count()>2) {
1494: image.SetPixel(x, y,
1495: image.Color(params.as_int(2, "color must be int", r)));
1496: } else
1.157 moko 1497: r.write(*new VInt(image.DecodeColor(image.GetPixel(x, y))));
1.53 parser 1498: }
1499:
1500:
1.22 paf 1501: // constructor
1502:
1.91 paf 1503: MImage::MImage(): Methoded("image") {
1.1 paf 1504: // ^image:measure[DATA]
1.163 moko 1505: // ^image:measure[DATA; $.exif(false) $.xmp(false) $.xmp-charset[UTF-8] ]
1506: add_native_method("measure", Method::CT_DYNAMIC, _measure, 1, 2);
1.3 paf 1507:
1.25 paf 1508: // ^image.html[]
1509: // ^image.html[hash]
1.22 paf 1510: add_native_method("html", Method::CT_DYNAMIC, _html, 0, 1);
1.6 paf 1511:
1.25 paf 1512: // ^image.load[background.gif]
1.22 paf 1513: add_native_method("load", Method::CT_DYNAMIC, _load, 1, 1);
1.6 paf 1514:
1.25 paf 1515: // ^image.create[width;height] bgcolor=white
1516: // ^image.create[width;height;bgcolor]
1.22 paf 1517: add_native_method("create", Method::CT_DYNAMIC, _create, 2, 3);
1.6 paf 1518:
1.25 paf 1519: // ^image.gif[]
1.95 paf 1520: add_native_method("gif", Method::CT_DYNAMIC, _gif, 0, 1);
1.12 paf 1521:
1.25 paf 1522: // ^image.line(x0;y0;x1;y1;color)
1.22 paf 1523: add_native_method("line", Method::CT_DYNAMIC, _line, 5, 5);
1.13 paf 1524:
1.25 paf 1525: // ^image.fill(x;y;color)
1.22 paf 1526: add_native_method("fill", Method::CT_DYNAMIC, _fill, 3, 3);
1.13 paf 1527:
1.25 paf 1528: // ^image.rectangle(x0;y0;x1;y1;color)
1.22 paf 1529: add_native_method("rectangle", Method::CT_DYNAMIC, _rectangle, 5, 5);
1.13 paf 1530:
1.25 paf 1531: // ^image.bar(x0;y0;x1;y1;color)
1.22 paf 1532: add_native_method("bar", Method::CT_DYNAMIC, _bar, 5, 5);
1.13 paf 1533:
1.44 parser 1534: // ^image.replace(color-source;color-dest)[table x:y]
1.135 misha 1535: // ^image.replace(color-source;color-dest)
1536: add_native_method("replace", Method::CT_DYNAMIC, _replace, 2, 3);
1.44 parser 1537:
1538: // ^image.polyline(color)[table x:y]
1539: add_native_method("polyline", Method::CT_DYNAMIC, _polyline, 2, 2);
1.13 paf 1540:
1.44 parser 1541: // ^image.polygon(color)[table x:y]
1542: add_native_method("polygon", Method::CT_DYNAMIC, _polygon, 2, 2);
1.13 paf 1543:
1.44 parser 1544: // ^image.polybar(color)[table x:y]
1545: add_native_method("polybar", Method::CT_DYNAMIC, _polybar, 2, 2);
1.13 paf 1546:
1.125 misha 1547: // ^image.font[alPHAbet;font-file-name.gif]
1548: // ^image.font[alPHAbet;font-file-name.gif](spacebar_width)
1549: // ^image.font[alPHAbet;font-file-name.gif](spacebar_width;letter_width)
1550: // ^image.font[alPHAbet;font-file-name.gif][$.space-width(.) $.letter-width(.) $.letter-space(.)]
1551: add_native_method("font", Method::CT_DYNAMIC, _font, 2, 4);
1.16 paf 1552:
1.125 misha 1553: // ^image.text(x;y)[text]
1.22 paf 1554: add_native_method("text", Method::CT_DYNAMIC, _text, 3, 3);
1.47 parser 1555:
1.125 misha 1556: // ^image.length[text]
1.47 parser 1557: add_native_method("length", Method::CT_DYNAMIC, _length, 1, 1);
1.16 paf 1558:
1.48 parser 1559: // ^image.arc(center x;center y;width;height;start in degrees;end in degrees;color)
1560: add_native_method("arc", Method::CT_DYNAMIC, _arc, 7, 7);
1.49 parser 1561:
1562: // ^image.sector(center x;center y;width;height;start in degrees;end in degrees;color)
1563: add_native_method("sector", Method::CT_DYNAMIC, _sector, 7, 7);
1.48 parser 1564:
1565: // ^image.circle(center x;center y;r;color)
1566: add_native_method("circle", Method::CT_DYNAMIC, _circle, 4, 4);
1567:
1.56 parser 1568: // ^image.copy[source](src x;src y;src w;src h;dst x;dst y[;dest w[;dest h[;tolerance]]])
1569: add_native_method("copy", Method::CT_DYNAMIC, _copy, 1+2+2+2, (1+2+2+2)+2+1);
1.108 paf 1570:
1571: // ^image.pixel(x;y)[(color)]
1.109 paf 1572: add_native_method("pixel", Method::CT_DYNAMIC, _pixel, 2, 3);
1.1 paf 1573: }
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