|
|
| version 1.27, 2001/05/17 10:12:28 | version 1.192, 2024/11/10 20:46:08 |
|---|---|
| Line 1 | Line 1 |
| /** @file | /** @file |
| Parser: @b image parser class. | Parser: @b image parser class. |
| Copyright(c) 2001 ArtLebedev Group(http://www.artlebedev.com) | Copyright (c) 2001-2024 Art. Lebedev Studio (http://www.artlebedev.com) |
| Authors: Konstantin Morshnev <moko@design.ru>, Alexandr Petrosian <paf@design.ru> | |
| Author: Alexander Petrosyan <paf@design.ru>(http://design.ru/paf) | */ |
| $Id$ | /* |
| jpegsize: gets the width and height (in pixels) of a jpeg file | |
| Andrew Tong, werdna@ugcs.caltech.edu February 14, 1995 | |
| modified slightly by alex@ed.ac.uk | |
| and further still by rjray@uswest.com | |
| optimization and general re-write from tmetro@vl.com | |
| from perl by paf@design.ru | |
| */ | */ |
| #include "pa_config_includes.h" | #include "pa_config_includes.h" |
| #include "gif.h" | #include "gif.h" |
| #include "pa_vmethod_frame.h" | |
| #include "pa_common.h" | #include "pa_common.h" |
| #include "pa_request.h" | #include "pa_request.h" |
| #include "pa_vfile.h" | #include "pa_vfile.h" |
| #include "pa_vimage.h" | #include "pa_vimage.h" |
| #include "pa_vdate.h" | |
| #include "pa_table.h" | |
| #include "pa_charsets.h" | |
| volatile const char * IDENT_IMAGE_C="$Id$"; | |
| // defines | // defines |
| #define IMAGE_CLASS_NAME "image" | static const String spacebar_width_name("space"); |
| static const String monospace_width_name("width"); | |
| static const String letter_spacing_name("spacing"); | |
| // class | // class |
| class MImage : public Methoded { | class MImage: public Methoded { |
| public: // VStateless_class | public: // VStateless_class |
| Value *create_new_value(Pool& pool) { return new(pool) VImage(pool); } | Value* create_new_value(Pool&) { return new VImage(); } |
| public: | public: |
| MImage(Pool& pool); | MImage(); |
| }; | |
| public: // Methoded | // globals |
| bool used_directly() { return true; } | |
| }; | DECLARE_CLASS_VAR(image, new MImage); |
| // helpers | // helpers |
| /// simple buffered reader[from memory/file], used in _measure | #define EXIF_TAG(tag, name) put(tag, #name); |
| /// value of exif tag -> it's value | |
| class EXIF_tag_value2name: public Hash<int, const char*> { | |
| public: | |
| EXIF_tag_value2name() { | |
| // image JPEG Exif | |
| // Tags used by IFD0 (main image) | |
| EXIF_TAG(0x010e, ImageDescription); | |
| EXIF_TAG(0x010f, Make); | |
| EXIF_TAG(0x0110, Model); | |
| EXIF_TAG(0x0112, Orientation); | |
| EXIF_TAG(0x011a, XResolution); | |
| EXIF_TAG(0x011b, YResolution); | |
| EXIF_TAG(0x0128, ResolutionUnit); | |
| EXIF_TAG(0x0131, Software); | |
| EXIF_TAG(0x0132, DateTime); | |
| EXIF_TAG(0x013e, WhitePoint); | |
| EXIF_TAG(0x013f, PrimaryChromaticities); | |
| EXIF_TAG(0x0211, YCbCrCoefficients); | |
| EXIF_TAG(0x0213, YCbCrPositioning); | |
| EXIF_TAG(0x0214, ReferenceBlackWhite); | |
| EXIF_TAG(0x8298, Copyright); | |
| EXIF_TAG(0x8769, ExifOffset); | |
| // Tags used by Exif SubIFD | |
| EXIF_TAG(0x829a, ExposureTime); | |
| EXIF_TAG(0x829d, FNumber); | |
| EXIF_TAG(0x8822, ExposureProgram); | |
| EXIF_TAG(0x8827, ISOSpeedRatings); | |
| EXIF_TAG(0x9000, ExifVersion); | |
| EXIF_TAG(0x9003, DateTimeOriginal); | |
| EXIF_TAG(0x9004, DateTimeDigitized); | |
| EXIF_TAG(0x9101, ComponentsConfiguration); | |
| EXIF_TAG(0x9102, CompressedBitsPerPixel); | |
| EXIF_TAG(0x9201, ShutterSpeedValue); | |
| EXIF_TAG(0x9202, ApertureValue); | |
| EXIF_TAG(0x9203, BrightnessValue); | |
| EXIF_TAG(0x9204, ExposureBiasValue); | |
| EXIF_TAG(0x9205, MaxApertureValue); | |
| EXIF_TAG(0x9206, SubjectDistance); | |
| EXIF_TAG(0x9207, MeteringMode); | |
| EXIF_TAG(0x9208, LightSource); | |
| EXIF_TAG(0x9209, Flash); | |
| EXIF_TAG(0x920a, FocalLength); | |
| EXIF_TAG(0x927c, MakerNote); | |
| EXIF_TAG(0x9286, UserComment); | |
| EXIF_TAG(0x9290, SubsecTime); | |
| EXIF_TAG(0x9291, SubsecTimeOriginal); | |
| EXIF_TAG(0x9292, SubsecTimeDigitized); | |
| EXIF_TAG(0xa000, FlashPixVersion); | |
| EXIF_TAG(0xa001, ColorSpace); | |
| EXIF_TAG(0xa002, ExifImageWidth); | |
| EXIF_TAG(0xa003, ExifImageHeight); | |
| EXIF_TAG(0xa004, RelatedSoundFile); | |
| EXIF_TAG(0xa005, ExifInteroperabilityOffset); | |
| EXIF_TAG(0xa20e, FocalPlaneXResolution); | |
| EXIF_TAG(0xa20f, FocalPlaneYResolution); | |
| EXIF_TAG(0xa210, FocalPlaneResolutionUnit); | |
| EXIF_TAG(0xa215, ExposureIndex); | |
| EXIF_TAG(0xa217, SensingMethod); | |
| EXIF_TAG(0xa300, FileSource); | |
| EXIF_TAG(0xa301, SceneType); | |
| EXIF_TAG(0xa302, CFAPattern); | |
| // Misc Tags | |
| EXIF_TAG(0x00fe, NewSubfileType); | |
| EXIF_TAG(0x00ff, SubfileType); | |
| EXIF_TAG(0x012d, TransferFunction); | |
| EXIF_TAG(0x013b, Artist); | |
| EXIF_TAG(0x013d, Predictor); | |
| EXIF_TAG(0x0142, TileWidth); | |
| EXIF_TAG(0x0143, TileLength); | |
| EXIF_TAG(0x0144, TileOffsets); | |
| EXIF_TAG(0x0145, TileByteCounts); | |
| EXIF_TAG(0x014a, SubIFDs); | |
| EXIF_TAG(0x015b, JPEGTables); | |
| EXIF_TAG(0x828d, CFARepeatPatternDim); | |
| EXIF_TAG(0x828e, CFAPattern); | |
| EXIF_TAG(0x828f, BatteryLevel); | |
| EXIF_TAG(0x83bb, IPTC/NAA); | |
| EXIF_TAG(0x8773, InterColorProfile); | |
| EXIF_TAG(0x8824, SpectralSensitivity); | |
| //EXIF_TAG(0x8825, GPSInfo); | |
| EXIF_TAG(0x8828, OECF); | |
| EXIF_TAG(0x8829, Interlace); | |
| EXIF_TAG(0x882a, TimeZoneOffset); | |
| EXIF_TAG(0x882b, SelfTimerMode); | |
| EXIF_TAG(0x920b, FlashEnergy); | |
| EXIF_TAG(0x920c, SpatialFrequencyResponse); | |
| EXIF_TAG(0x920d, Noise); | |
| EXIF_TAG(0x9211, ImageNumber); | |
| EXIF_TAG(0x9212, SecurityClassification); | |
| EXIF_TAG(0x9213, ImageHistory); | |
| EXIF_TAG(0x9214, SubjectLocation); | |
| EXIF_TAG(0x9215, ExposureIndex); | |
| EXIF_TAG(0x9216, TIFF/EPStandardID); | |
| EXIF_TAG(0xa20b, FlashEnergy); | |
| EXIF_TAG(0xa20c, SpatialFrequencyResponse); | |
| EXIF_TAG(0xa214, SubjectLocation); | |
| // additional things added by misha@ | |
| EXIF_TAG(0x0100, ImageWidth); | |
| EXIF_TAG(0x0101, ImageLength); | |
| EXIF_TAG(0x0102, BitsPerSample); | |
| EXIF_TAG(0x0103, Compression); | |
| EXIF_TAG(0x0106, PhotometricInterpretation); | |
| EXIF_TAG(0x010a, FillOrder); | |
| EXIF_TAG(0x010d, DocumentName); | |
| EXIF_TAG(0x0111, StripOffsets); | |
| EXIF_TAG(0x0115, SamplesPerPixel); | |
| EXIF_TAG(0x0116, RowsPerStrip); | |
| EXIF_TAG(0x0117, StripByteCounts); | |
| EXIF_TAG(0x011c, PlanarConfiguration); | |
| EXIF_TAG(0x0156, TransferRange); | |
| EXIF_TAG(0x0200, JPEGProc); | |
| EXIF_TAG(0x0201, JPEGInterchangeFormat); | |
| EXIF_TAG(0x0202, JPEGInterchangeFormatLength); | |
| EXIF_TAG(0x0212, YCbCrSubSampling); | |
| EXIF_TAG(0xa401, CustomRendered); | |
| EXIF_TAG(0xa402, ExposureMode); | |
| EXIF_TAG(0xa403, WhiteBalance); | |
| EXIF_TAG(0xa404, DigitalZoomRatio); | |
| EXIF_TAG(0xa405, FocalLengthIn35mmFilm); | |
| EXIF_TAG(0xa406, SceneCaptureType); | |
| EXIF_TAG(0xa407, GainControl); | |
| EXIF_TAG(0xa408, Contrast); | |
| EXIF_TAG(0xa409, Saturation); | |
| EXIF_TAG(0xa40a, Sharpness); | |
| EXIF_TAG(0xa40b, DeviceSettingDescription); | |
| EXIF_TAG(0xa40c, SubjectDistanceRange); | |
| EXIF_TAG(0xa420, ImageUniqueID); | |
| // other tags | |
| EXIF_TAG(0xa430, CameraOwnerName); | |
| EXIF_TAG(0xa431, BodySerialNumber); | |
| EXIF_TAG(0xa432, LensSpecification); | |
| EXIF_TAG(0xa433, LensManufactor); | |
| EXIF_TAG(0xa434, LensModel); | |
| EXIF_TAG(0xa435, LensSerialNumber); | |
| } | |
| static EXIF_tag_value2name &instance(){ | |
| static EXIF_tag_value2name *singleton=NULL; | |
| if(!singleton) | |
| singleton=new EXIF_tag_value2name; | |
| return *singleton; | |
| } | |
| }; | |
| class EXIF_gps_tag_value2name: public Hash<int, const char*> { | |
| public: | |
| EXIF_gps_tag_value2name() { | |
| EXIF_TAG(0x0, GPSVersionID); | |
| EXIF_TAG(0x1, GPSLatitudeRef); | |
| EXIF_TAG(0x2, GPSLatitude); | |
| EXIF_TAG(0x3, GPSLongitudeRef); | |
| EXIF_TAG(0x4, GPSLongitude); | |
| EXIF_TAG(0x5, GPSAltitudeRef); | |
| EXIF_TAG(0x6, GPSAltitude); | |
| EXIF_TAG(0x7, GPSTimeStamp); | |
| EXIF_TAG(0x8, GPSSatellites); | |
| EXIF_TAG(0x9, GPSStatus); | |
| EXIF_TAG(0xA, GPSMeasureMode); | |
| EXIF_TAG(0xB, GPSDOP); | |
| EXIF_TAG(0xC, GPSSpeedRef); | |
| EXIF_TAG(0xD, GPSSpeed); | |
| EXIF_TAG(0xE, GPSTrackRef); | |
| EXIF_TAG(0xF, GPSTrack); | |
| EXIF_TAG(0x10, GPSImgDirectionRef); | |
| EXIF_TAG(0x11, GPSImgDirection); | |
| EXIF_TAG(0x12, GPSMapDatum); | |
| EXIF_TAG(0x13, GPSDestLatitudeRef); | |
| EXIF_TAG(0x14, GPSDestLatitude); | |
| EXIF_TAG(0x15, GPSDestLongitudeRef); | |
| EXIF_TAG(0x16, GPSDestLongitude); | |
| EXIF_TAG(0x17, GPSDestBearingRef); | |
| EXIF_TAG(0x18, GPSDestBearing); | |
| EXIF_TAG(0x19, GPSDestDistanceRef); | |
| EXIF_TAG(0x1A, GPSDestDistance); | |
| EXIF_TAG(0x1B, GPSProcessingMethod); | |
| EXIF_TAG(0x1C, GPSAreaInformation); | |
| EXIF_TAG(0x1D, GPSDateStamp); | |
| EXIF_TAG(0x1E, GPSDifferential); | |
| } | |
| static EXIF_gps_tag_value2name &instance(){ | |
| static EXIF_gps_tag_value2name *singleton=NULL; | |
| if(!singleton) | |
| singleton=new EXIF_gps_tag_value2name; | |
| return *singleton; | |
| } | |
| }; | |
| ///*********************************************** support functions | |
| class Measure_reader { | class Measure_reader { |
| public: | public: |
| enum { READ_CHUNK_SIZE=0x400 };// 1K | virtual size_t read(const char* &buf, size_t limit)=0; |
| typedef size_t(*Func)(void *& buf, size_t limit, void *info); | virtual void seek(uint64_t value)=0; |
| virtual uint64_t tell()=0; | |
| virtual uint64_t length()=0; | |
| }; | |
| class Measure_file_reader: public Measure_reader { | |
| const String& file_name; | |
| int f; | |
| Measure_reader(Func afunc, void *ainfo) : | public: |
| func(afunc), info(ainfo), | Measure_file_reader(int af, const String& afile_name): |
| chunk(0), offset(0), size(0) { | file_name(afile_name), f(af) { |
| } | } |
| size_t read(unsigned char *& buf, size_t limit) { | override size_t read(const char* &abuf, size_t limit) { |
| if(offset+limit>size) // nothing left | if(limit==0) |
| if(offset==0 || limit==1) { // only one-byte continuations allowed | |
| size=(*func)(chunk, READ_CHUNK_SIZE, info); | |
| offset=0; | |
| } else | |
| return 0;// as if EOF | |
| if(!size) // EOF | |
| return 0; | return 0; |
| // something left | char* lbuf=new(PointerFreeGC) char[limit]; |
| size_t read_size=min(offset+limit, size)-offset; | ssize_t read_size=::read(f, lbuf, limit); abuf=lbuf; |
| buf=((unsigned char *)chunk)+offset; | if(read_size<0) |
| offset+=read_size; | throw Exception(0, &file_name, "measure read failed: %s (%d)", strerror(errno), errno); |
| return read_size; | return read_size; |
| } | } |
| private: | override void seek(uint64_t value) { |
| Func func; | if(pa_lseek(f, value, SEEK_SET)<0) |
| void *info; | throw Exception(IMAGE_FORMAT, &file_name, "seek to %.15g failed: %s (%d)", (double)value, strerror(errno), errno); |
| } | |
| override uint64_t tell() { return pa_lseek(f, 0, SEEK_CUR); } | |
| override uint64_t length() { return pa_lseek(f, 0, SEEK_END); } | |
| }; | |
| class Measure_buf_reader: public Measure_reader { | |
| const char* buf; size_t size; | |
| const String& file_name; | |
| void *chunk; | |
| size_t offset; | size_t offset; |
| size_t size; | |
| public: | |
| Measure_buf_reader(const char* abuf, size_t asize, const String& afile_name): | |
| buf(abuf), size(asize), file_name(afile_name), offset(0) { | |
| } | |
| override size_t read(const char* &abuf, size_t limit) { | |
| size_t to_read=min(limit, size-offset); | |
| abuf=buf+offset; | |
| offset+=to_read; | |
| return to_read; | |
| } | |
| override void seek(uint64_t value) { | |
| if(value>(uint64_t)size) | |
| throw Exception(IMAGE_FORMAT, &file_name, "seek to %.15g failed: out of buffer (%.15g)", value, size); | |
| offset=(size_t)value; | |
| } | |
| override uint64_t tell() { return offset; } | |
| override uint64_t length() { return size; } | |
| }; | }; |
| /// GIF file header | |
| struct GIF_Header { | struct Measure_info { |
| char type[3]; // 'GIF' | ushort width; |
| char version[3]; | ushort height; |
| unsigned char width[2]; | Value** exif; |
| unsigned char height[2]; | Value** xmp; |
| char dif; | Charset* xmp_charset; |
| char fonColor; | bool video; |
| char nulls; | }; |
| }; | |
| /// JPEG file header | inline ushort x_endian_to_ushort(uchar b0, uchar b1) { |
| struct JFIF_Header { | return (ushort)((b1<<8) + b0); |
| char length[2]; //< length of JFIF segment marker | } |
| char identifier[5]; //< JFIF identifier | |
| char version[2]; //< version | inline uint x_endian_to_uint(uchar b0, uchar b1, uchar b2, uchar b3) { |
| char units; //< units X of Y pixel density | return (uint)(((((b3<<8) + b2)<<8)+b1)<<8)+b0; |
| char xdensity[2]; //< X pixel density | } |
| char ydensity[2]; //< X pixel density | |
| char xthumbnails; //< width of thumbnails | inline ushort endian_to_ushort(bool is_big, const uchar *b/* [2] */) { |
| char ythumbnails; //< height of thumbnails | return is_big ? x_endian_to_ushort(b[1], b[0]) : x_endian_to_ushort(b[0], b[1]); |
| char reserved; //< reserved | } |
| inline uint endian_to_uint(bool is_big, const uchar *b /* [4] */) { | |
| 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]); | |
| } | |
| ///*********************************************** JPEG | |
| struct JPG_Segment_head { | |
| uchar marker; | |
| uchar code; | |
| uchar length[2]; | |
| }; | }; |
| /// JPEG frame header | /// JPEG frame header |
| struct JPG_Frame { | struct JPG_Size_segment_body { |
| char length[2]; //< length of image marker | char data; //< data precision of bits/sample |
| char data; //< data precision of bits/sample | uchar height[2]; //< image height |
| char height[2]; //< image height | uchar width[2]; //< image width |
| char width[2]; //< image width | char numComponents; //< number of color components |
| char numComponents; //< number of color components | |
| }; | }; |
| // | /// JPEG Exif TIFF Header |
| struct JPG_Exif_TIFF_header { | |
| char byte_align_identifier[2]; | |
| uchar signature[2]; // always 000A [or 0A00] | |
| uchar first_IFD_offset[4]; // Usually the first IFD starts immediately next to TIFF header, so this offset has value '0x00000008'. | |
| }; | |
| // JPEG Exif IFD start | |
| struct JPG_Exif_IFD_begin { | |
| uchar directory_entry_count[2]; // the number of directory entry contains in this IFD | |
| }; | |
| // TTTT ffff NNNNNNNN DDDDDDDD | |
| struct JPG_Exif_IFD_entry { | |
| uchar tag[2]; // Tag number, this shows a kind of data | |
| uchar format[2]; // data format | |
| uchar components_count[4]; // number of components | |
| uchar value_or_offset_to_it[4]; // data value or offset to data value | |
| }; | |
| #define JPG_IFD_TAG_EXIF_OFFSET 0x8769 | |
| inline short bytes_to_int(unsigned char HI, unsigned char LO) { | #define JPG_IFD_TAG_EXIF_GPS_OFFSET 0x8825 |
| return(short)((HI<<8) + LO); | |
| #define JPEG_EXIF_DATE_CHARS 20 | |
| static Value* parse_IFD_entry_formatted_one_value(bool is_big, ushort format, size_t component_size, const uchar *value) { | |
| switch(format) { | |
| case 1: // unsigned byte | |
| return new VInt((uchar)value[0]); | |
| case 3: // unsigned short | |
| return new VInt(endian_to_ushort(is_big, value)); | |
| case 4: // unsigned long | |
| // 'double' because parser's Int is signed | |
| return new VDouble(endian_to_uint(is_big, value)); | |
| case 5: // unsigned rational | |
| { | |
| uint numerator=endian_to_uint(is_big, value); value+=component_size/2; | |
| uint denominator=endian_to_uint(is_big, value); | |
| if(!denominator) | |
| return 0; | |
| return new VDouble(((double)numerator)/denominator); | |
| } | |
| case 6: // signed byte | |
| return new VInt((signed char)value[0]); | |
| case 8: // signed short | |
| return new VInt((signed short)endian_to_ushort(is_big, value)); | |
| case 9: // signed long | |
| return new VInt((signed int)endian_to_uint(is_big, value)); | |
| case 10: // signed rational | |
| { | |
| signed int numerator=(signed int)endian_to_uint(is_big, value); value+=component_size/2; | |
| uint denominator=endian_to_uint(is_big, value); | |
| if(!denominator) | |
| return 0; | |
| return new VDouble(numerator/denominator); | |
| } | |
| /* | |
| case 11: // single float | |
| @todo | |
| case 12: // double float | |
| @todo | |
| */ | |
| }; | |
| return 0; | |
| } | } |
| void measure_gif(Pool& pool, const String *origin_string, | // date.C |
| Measure_reader& reader, int& width, int& height) { | tm cstr_to_time_t(char *, const char **); |
| unsigned char *buf; | static Value* parse_IFD_entry_formatted_value(bool is_big, ushort format, size_t component_size, uint components_count, const uchar *value) { |
| const int head_size=sizeof(GIF_Header); | if(format==2) { // ascii string, exception: the only type with varying size |
| if(reader.read(buf, head_size)<head_size) | const char* cstr=(const char* )value; |
| PTHROW(0, 0, | size_t length=components_count; |
| origin_string, | // Data format is "YYYY:MM:DD HH:MM:SS"+0x00, total 20bytes |
| "broken GIF header - file size is less then %d bytes", head_size); | if(length==JPEG_EXIF_DATE_CHARS && isdigit((unsigned char)cstr[0]) && cstr[length-1]==0) { |
| try { | |
| GIF_Header& screenD=*reinterpret_cast<GIF_Header *>(buf); | tm tmIn=cstr_to_time_t(pa_strdup(cstr), 0); |
| if(strncmp(screenD.type, "GIF", 3)!=0) | return new VDate(tmIn); |
| PTHROW(0, 0, | } |
| origin_string, | catch(...) { /*ignore bad date times*/ } |
| "bad image file - GIF signature not found"); | } |
| return new VString(*new String(cstr, String::L_TAINTED)); | |
| } | |
| if(components_count==1) | |
| return parse_IFD_entry_formatted_one_value(is_big, format, component_size, value); | |
| width=bytes_to_int(screenD.width[1], screenD.width[0]); | VHash* result=new VHash; |
| height=bytes_to_int(screenD.height[1], screenD.height[0]); | HashStringValue& hash=result->hash(); |
| for(uint i=0; i<components_count; i++, value+=component_size) { | |
| hash.put( | |
| pa_uitoa(i), | |
| parse_IFD_entry_formatted_one_value(is_big, format, component_size, value)); | |
| } | |
| return result; | |
| } | |
| static Value* parse_IFD_entry_value(bool is_big, Measure_reader& reader, uint64_t tiff_base, JPG_Exif_IFD_entry& entry) { | |
| size_t format2component_size[]={ | |
| 0, // undefined | |
| 1, // unsigned byte | |
| 1, // ascii string | |
| 2, // unsigned short | |
| 4, // unsigned long | |
| 8, // unsigned rational | |
| 1, // signed byte | |
| 0, // undefined | |
| 2, // signed short | |
| 4, // signed long | |
| 8, // signed rational | |
| /* | |
| 4, // single float | |
| 8, // double float | |
| */ | |
| }; | |
| ushort format=endian_to_ushort(is_big, entry.format); | |
| if(format>=sizeof(format2component_size)/sizeof(format2component_size[0])) | |
| return 0; // format out of range, ignoring | |
| size_t component_size=format2component_size[format]; | |
| if(component_size==0) | |
| return 0; // undefined format | |
| // You can get the total data byte length by multiplies | |
| // a 'bytes/components' value (see above chart) by number of components stored 'NNNNNNNN' area | |
| uint components_count=endian_to_uint(is_big, entry.components_count); | |
| uint value_size=component_size*components_count; | |
| // If its size is over 4bytes, 'DDDDDDDD' contains the offset to data stored address | |
| Value* result; | |
| if(value_size<=4) | |
| result=parse_IFD_entry_formatted_value(is_big, format, component_size, components_count, entry.value_or_offset_to_it); | |
| else { | |
| uint64_t remembered=reader.tell(); | |
| { | |
| reader.seek(tiff_base+endian_to_uint(is_big, entry.value_or_offset_to_it)); | |
| const char* value; | |
| if(reader.read(value, value_size)<value_size) | |
| return 0; | |
| result=parse_IFD_entry_formatted_value(is_big, format, component_size, components_count, (const uchar*)value); | |
| } | |
| reader.seek(remembered); | |
| } | |
| return result; | |
| } | } |
| void measure_jpeg(Pool& pool, const String *origin_string, | static void parse_IFD(HashStringValue& hash, bool is_big, Measure_reader& reader, uint64_t tiff_base, bool gps=false); |
| Measure_reader& reader, int& width, int& height) { | |
| 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) { | |
| ushort tag=endian_to_ushort(is_big, entry.tag); | |
| if(tag==JPG_IFD_TAG_EXIF_OFFSET || tag==JPG_IFD_TAG_EXIF_GPS_OFFSET){ | |
| uint64_t remembered=reader.tell(); | |
| { | |
| reader.seek(tiff_base+endian_to_uint(is_big, entry.value_or_offset_to_it)); | |
| parse_IFD(hash, is_big, reader, tiff_base, (tag==JPG_IFD_TAG_EXIF_GPS_OFFSET)?true:gps); | |
| } | |
| reader.seek(remembered); | |
| return; | |
| } | |
| if(Value* value=parse_IFD_entry_value(is_big, reader, tiff_base, entry)) { | |
| if(const char* name=(gps ? EXIF_gps_tag_value2name::instance().get(tag) : EXIF_tag_value2name::instance().get(tag))) | |
| hash.put(name, value); | |
| else | |
| hash.put(pa_uitoa((int)tag), value); | |
| } | |
| } | |
| static void parse_IFD(HashStringValue& hash, bool is_big, Measure_reader& reader, uint64_t tiff_base, bool gps) { | |
| const char* buf; | |
| if(reader.read(buf, sizeof(JPG_Exif_IFD_begin))<sizeof(JPG_Exif_IFD_begin)) | |
| return; | |
| JPG_Exif_IFD_begin *start=(JPG_Exif_IFD_begin *)buf; | |
| ushort directory_entry_count=endian_to_ushort(is_big, start->directory_entry_count); | |
| for(int i=0; i<directory_entry_count; i++) { | |
| if(reader.read(buf, sizeof(JPG_Exif_IFD_entry))<sizeof(JPG_Exif_IFD_entry)) | |
| return; | |
| parse_IFD_entry(hash, is_big, reader, tiff_base, *(JPG_Exif_IFD_entry *)buf, gps); | |
| } | |
| // then goes: LLLLLLLL Offset to next IFD [not going there] | |
| } | |
| static Value* parse_exif(Measure_reader& reader) { | |
| const char* buf; | |
| uint64_t tiff_base=reader.tell(); | |
| if(reader.read(buf, sizeof(JPG_Exif_TIFF_header))<sizeof(JPG_Exif_TIFF_header)) | |
| return 0; | |
| JPG_Exif_TIFF_header *head=(JPG_Exif_TIFF_header *)buf; | |
| bool is_big=head->byte_align_identifier[0]=='M'; // [M]otorola vs [I]ntel | |
| uint first_IFD_offset=endian_to_uint(is_big, head->first_IFD_offset); | |
| reader.seek(tiff_base+first_IFD_offset); | |
| VHash* vhash=new VHash; | |
| // IFD | |
| parse_IFD(vhash->hash(), is_big, reader, tiff_base); | |
| return vhash; | |
| } | |
| static Value* parse_xmp(Measure_reader& reader, ushort xmp_length, Measure_info &info) { | |
| const char* buf; | |
| if(reader.read(buf, xmp_length)<xmp_length) | |
| return 0; | |
| String::C xmp = Charset::transcode(String::C(pa_strdup(buf, xmp_length), xmp_length), *info.xmp_charset, pa_thread_request().charsets.source()); | |
| return new VString(*new String(xmp, String::L_TAINTED)); | |
| } | |
| static void measure_jpeg(const String& origin_string, Measure_reader& reader, Measure_info &info) { | |
| // JFIF format markers | // JFIF format markers |
| const unsigned char SOI=0xD8; | const uchar MARKER=0xFF; |
| const unsigned char EOI=0xD9; | const uchar CODE_SIZE_A=0xC0; |
| const unsigned char APP0=0xE0; | const uchar CODE_SIZE_B=0xC1; |
| const unsigned char SOF0=0xC0; | const uchar CODE_SIZE_C=0xC2; |
| const unsigned char SOF2=0xC2; | const uchar CODE_SIZE_D=0xC3; |
| const unsigned char COM=0xFE; | const uchar CODE_APP1=0xE1; |
| unsigned char *screenD_buf; | const char* buf; |
| unsigned char *h_buf=0; | |
| bool flag=false; | |
| unsigned char *prefix; | |
| const size_t prefix_size=2; | const size_t prefix_size=2; |
| if(reader.read(prefix, prefix_size)<prefix_size) | if(reader.read(buf, prefix_size)<prefix_size) |
| PTHROW(0, 0, | throw Exception(IMAGE_FORMAT, &origin_string, "not JPEG file - too small"); |
| origin_string, | uchar *signature=(uchar *)buf; |
| "broken JPEG file - size is less then %d bytes", prefix_size); | |
| if(((unsigned char *)prefix)[1]!=SOI) | if(!(signature[0]==0xFF && signature[1]==0xD8)) |
| PTHROW(0, 0, | throw Exception(IMAGE_FORMAT, &origin_string, "not JPEG file - wrong signature"); |
| origin_string, | |
| "broken JPEG file - second byte of header is not 0x%02X", SOI); | while(true) { |
| uint64_t segment_base=reader.tell()+2/*marker,code*/; | |
| unsigned char zero=0; | if(reader.read(buf, sizeof(JPG_Segment_head))<sizeof(JPG_Segment_head)) |
| unsigned char *marker=&zero; | |
| do { | |
| while((*marker)!=0xFF) | |
| if(reader.read(marker, sizeof(char))<=0) break; | |
| if(reader.read(marker, sizeof(char))<=0) break; | |
| switch(*marker) { | |
| case EOI: | |
| marker=&zero; | |
| break; | break; |
| case APP0: | JPG_Segment_head *head=(JPG_Segment_head *)buf; |
| if(!flag) { | |
| flag=true; | // Verify that it's a valid segment. |
| if(reader.read(screenD_buf, sizeof(JFIF_Header)) < sizeof(JFIF_Header)) | if(head->marker!=MARKER) |
| throw Exception(IMAGE_FORMAT, &origin_string, "not JPEG file - marker not found"); | |
| ushort segment_length=endian_to_ushort(true, head->length); | |
| switch(head->code) { | |
| // http://dev.exiv2.org/projects/exiv2/wiki/The_Metadata_in_JPEG_files | |
| case CODE_APP1: | |
| { | |
| const size_t EXIF_SIG_LEN=6; // Exif\0\0 | |
| const size_t XMP_SIG_LEN=29; // http://ns.adobe.com/xap/1.0/\0 | |
| if(segment_length<EXIF_SIG_LEN+2 || reader.read(buf, EXIF_SIG_LEN)<EXIF_SIG_LEN) | |
| break; | break; |
| JFIF_Header& screenD=*reinterpret_cast<JFIF_Header *>(screenD_buf); | if(memcmp(buf, "Exif\0\0", EXIF_SIG_LEN)==0){ |
| if((bytes_to_int(screenD.length[0], screenD.length[1]) < 16) || | if(info.exif && !*info.exif) // backward compatibility: using first segment |
| strcasecmp(screenD.identifier, "JFIF")) flag=false; | *info.exif=parse_exif(reader); |
| break; | |
| } | |
| if(memcmp(buf, "http:/", EXIF_SIG_LEN)) | |
| break; | |
| if(segment_length<XMP_SIG_LEN+2 || reader.read(buf, XMP_SIG_LEN-EXIF_SIG_LEN)<XMP_SIG_LEN-EXIF_SIG_LEN) | |
| break; | |
| if(memcmp(buf, "/ns.adobe.com/xap/1.0/\0", XMP_SIG_LEN-EXIF_SIG_LEN)==0){ | |
| if(info.xmp && !*info.xmp) // backward compatibility: using first segment | |
| *info.xmp=parse_xmp(reader, segment_length - XMP_SIG_LEN - 2 /* segment_length */, info); | |
| } | |
| } | } |
| break; | break; |
| case SOF0: | |
| case SOF2: | case CODE_SIZE_A: |
| if(reader.read(h_buf, sizeof(JPG_Frame))<sizeof(JPG_Frame)) | case CODE_SIZE_B: |
| flag=false; | case CODE_SIZE_C: |
| break; | case CODE_SIZE_D: |
| default: break; | { |
| // Segments that contain size info | |
| if(reader.read(buf, sizeof(JPG_Size_segment_body))<sizeof(JPG_Size_segment_body)) | |
| throw Exception(IMAGE_FORMAT, &origin_string, "not JPEG file - cannot fully read Size segment"); | |
| JPG_Size_segment_body *body=(JPG_Size_segment_body *)buf; | |
| info.width=endian_to_ushort(true, body->width); | |
| info.height=endian_to_ushort(true, body->height); | |
| } | |
| return; | |
| }; | |
| reader.seek(segment_base + segment_length); | |
| } | |
| throw Exception(IMAGE_FORMAT, &origin_string, "broken JPEG file - size frame not found"); | |
| } | |
| ///*********************************************** TIFF | |
| static bool parse_tiff_IFD(bool is_big, Measure_reader& reader, Measure_info &info) { | |
| const char* buf; | |
| if(reader.read(buf, sizeof(JPG_Exif_IFD_begin))<sizeof(JPG_Exif_IFD_begin)) | |
| return false; | |
| JPG_Exif_IFD_begin *start=(JPG_Exif_IFD_begin *)buf; | |
| ushort directory_entry_count=endian_to_ushort(is_big, start->directory_entry_count); | |
| for(int i=0; i<directory_entry_count; i++) { | |
| if(reader.read(buf, sizeof(JPG_Exif_IFD_entry))<sizeof(JPG_Exif_IFD_entry)) | |
| return false; | |
| JPG_Exif_IFD_entry *entry=(JPG_Exif_IFD_entry *)buf; | |
| ushort entry_tag=endian_to_ushort(is_big, entry->tag); | |
| if(entry_tag == 256 || entry_tag == 257){ | |
| ushort entry_format=endian_to_ushort(is_big, entry->format); | |
| if(entry_format != 3 && entry_format != 4 || endian_to_uint(is_big, entry->components_count) != 1) | |
| return false; | |
| 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); | |
| (entry_tag == 256) ? info.width=(short)value : info.height=(short)value; | |
| if(info.width && info.height) | |
| return true; | |
| } | } |
| } while(*marker!=EOI); | } |
| if(flag && h_buf) { | return false; |
| JPG_Frame& h=*reinterpret_cast<JPG_Frame *>(h_buf); | // then goes: LLLLLLLL Offset to next IFD [not going there] |
| width=bytes_to_int(h.width[0], h.width[1]); | } |
| height=bytes_to_int(h.height[0], h.height[1]); | |
| } else | static void measure_tiff(const String& origin_string, Measure_reader& reader, Measure_info &info) { |
| PTHROW(0, 0, | const char* buf; |
| origin_string, | |
| "broken JPEG file - APP0 frame not found"); | if(reader.read(buf, sizeof(JPG_Exif_TIFF_header))<sizeof(JPG_Exif_TIFF_header)) |
| throw Exception(IMAGE_FORMAT, &origin_string, "not TIFF file - too small"); | |
| JPG_Exif_TIFF_header *head=(JPG_Exif_TIFF_header *)buf; | |
| if(strncmp(head->byte_align_identifier, "II", 2)!=0 && strncmp(head->byte_align_identifier, "MM", 2)!=0) | |
| throw Exception(IMAGE_FORMAT, &origin_string, "not TIFF file - wrong signature"); | |
| bool is_big=head->byte_align_identifier[0]=='M'; // [M]otorola vs [I]ntel | |
| if(endian_to_ushort(is_big, head->signature) != 42) | |
| throw Exception(IMAGE_FORMAT, &origin_string, "not TIFF file - wrong signature"); | |
| reader.seek(endian_to_uint(is_big, head->first_IFD_offset)); | |
| if(!parse_tiff_IFD(is_big, reader, info)) | |
| throw Exception(IMAGE_FORMAT, &origin_string, "broken TIFF file - size field entry not found"); | |
| } | |
| ///*********************************************** GIF | |
| struct GIF_Header { | |
| char signature[3]; // 'GIF' | |
| char version[3]; | |
| uchar width[2]; | |
| uchar height[2]; | |
| char dif; | |
| char fonColor; | |
| char nulls; | |
| }; | |
| static void measure_gif(const String& origin_string, Measure_reader& reader, ushort& width, ushort& height) { | |
| const char* buf; | |
| const size_t head_size=sizeof(GIF_Header); | |
| if(reader.read(buf, head_size)<head_size) | |
| throw Exception(IMAGE_FORMAT, &origin_string, "not GIF file - too small"); | |
| GIF_Header *head=(GIF_Header *)buf; | |
| if(strncmp(head->signature, "GIF", 3)!=0) | |
| throw Exception(IMAGE_FORMAT, &origin_string, "not GIF file - wrong signature"); | |
| width=endian_to_ushort(false, head->width); | |
| height=endian_to_ushort(false, head->height); | |
| } | |
| ///*********************************************** PNG | |
| struct PNG_Header { | |
| char dummy[12]; | |
| char signature[4]; //< must be "IHDR" | |
| uchar high_width[2]; //< image width high bytes [we ignore for now] | |
| uchar width[2]; //< image width low bytes | |
| uchar high_height[2]; //< image height high bytes [we ignore for now] | |
| uchar height[4]; //< image height | |
| }; | |
| static void measure_png(const String& origin_string, Measure_reader& reader, ushort& width, ushort& height) { | |
| const char* buf; | |
| const size_t head_size=sizeof(PNG_Header); | |
| if(reader.read(buf, head_size)<head_size) | |
| throw Exception(IMAGE_FORMAT, &origin_string, "not PNG file - too small"); | |
| PNG_Header *head=(PNG_Header *)buf; | |
| if(strncmp(head->signature, "IHDR", 4)!=0) | |
| throw Exception(IMAGE_FORMAT, &origin_string, "not PNG file - wrong signature"); | |
| width=endian_to_ushort(true, head->width); | |
| height=endian_to_ushort(true, head->height); | |
| } | |
| ///*********************************************** BMP | |
| struct BMP_Header { | |
| char signature[2]; // 'BM' | |
| uchar file_size[4]; | |
| uchar reserved[4]; | |
| uchar bitmap_offset[4]; | |
| uchar header_size[4]; | |
| uchar width[2]; | |
| uchar high_width[2]; //< image width high bytes [we ignore for now] | |
| uchar height[2]; | |
| uchar high_height[2]; //< image height high bytes [we ignore for now] | |
| }; | |
| static void measure_bmp(const String& origin_string, Measure_reader& reader, ushort& width, ushort& height) { | |
| const char* buf; | |
| const size_t head_size=sizeof(BMP_Header); | |
| if(reader.read(buf, head_size)<head_size) | |
| throw Exception(IMAGE_FORMAT, &origin_string, "not BMP file - too small"); | |
| BMP_Header *head=(BMP_Header *)buf; | |
| if(strncmp(head->signature, "BM", 2)!=0) | |
| throw Exception(IMAGE_FORMAT, &origin_string, "not BMP file - wrong signature"); | |
| if((uint)reader.length() != endian_to_uint(false, head->file_size)) | |
| throw Exception(IMAGE_FORMAT, &origin_string, "not BMP file - length header and file size do not match"); | |
| width=endian_to_ushort(false, head->width); | |
| height=endian_to_ushort(false, head->height); | |
| } | |
| ///*********************************************** WEBP | |
| struct WEBP_Header { | |
| char signature_riff[4]; // 'RIFF' | |
| uchar file_size[4]; | |
| char signature[4]; // 'WEBP' | |
| char format[4]; // 'VP8 ' or 'VP8L' or 'VP8X' | |
| }; | |
| struct WEBP_VP8_Chunk { | |
| uchar size[4]; | |
| char tag[3]; | |
| uchar signature[3]; // 0x9D 0x01 0x2A | |
| uchar width[2]; // 14 bits each | |
| uchar height[2]; // 14 bits each | |
| }; | |
| struct WEBP_VP8L_Chunk { | |
| uchar size[4]; | |
| char signature; // 0x2F | |
| uchar width_height[4]; // 14 bits each | |
| }; | |
| struct WEBP_X_Chunk { | |
| uchar size[4]; | |
| char reserved[4]; | |
| uchar width[3]; | |
| uchar height[3]; | |
| }; | |
| static void measure_webp(const String& origin_string, Measure_reader& reader, ushort& width, ushort& height) { | |
| const char* buf; | |
| if(reader.read(buf, sizeof(WEBP_Header))<sizeof(WEBP_Header)) | |
| throw Exception(IMAGE_FORMAT, &origin_string, "not WEBP file - too small"); | |
| WEBP_Header *head=(WEBP_Header *)buf; | |
| if(strncmp(head->signature_riff, "RIFF", 4)!=0 || strncmp(head->signature, "WEBP", 4)!=0) | |
| throw Exception(IMAGE_FORMAT, &origin_string, "not WEBP file - wrong signature"); | |
| if(strncmp(head->format, "VP8 ", 4)==0){ | |
| if(reader.read(buf, sizeof(WEBP_VP8_Chunk))<sizeof(WEBP_VP8_Chunk)) | |
| throw Exception(IMAGE_FORMAT, &origin_string, "broken WEBP file - too small VP8 chunk"); | |
| WEBP_VP8_Chunk *chunk=(WEBP_VP8_Chunk *)buf; | |
| if (chunk->signature[0] != 0x9D || chunk->signature[1] != 0x01 || chunk->signature[2] != 0x2A) | |
| throw Exception(IMAGE_FORMAT, &origin_string, "broken WEBP file - wrong VP8 chunk signature"); | |
| width=endian_to_ushort(false, chunk->width) & 0x3FFF; | |
| height=endian_to_ushort(false, chunk->height) & 0x3FFF; | |
| } else if(strncmp(head->format, "VP8L", 4)==0){ | |
| if(reader.read(buf, sizeof(WEBP_VP8L_Chunk))<sizeof(WEBP_VP8L_Chunk)) | |
| throw Exception(IMAGE_FORMAT, &origin_string, "broken WEBP file - too small VP8L chunk"); | |
| WEBP_VP8L_Chunk *chunk=(WEBP_VP8L_Chunk *)buf; | |
| if(chunk->signature != 0x2F) | |
| throw Exception(IMAGE_FORMAT, &origin_string, "broken WEBP file - wrong VP8L chunk signature"); | |
| uint wh=endian_to_uint(false, chunk->width_height); | |
| width=(wh & 0x3FFF) + 1; | |
| height=((wh >> 14) & 0x3FFF) + 1; | |
| } else if (strncmp(head->format, "VP8X", 4)==0){ | |
| if(reader.read(buf, sizeof(WEBP_X_Chunk))<sizeof(WEBP_X_Chunk)) | |
| throw Exception(IMAGE_FORMAT, &origin_string, "broken WEBP file - too small VP8X chunk"); | |
| WEBP_X_Chunk *chunk=(WEBP_X_Chunk *)buf; | |
| width=endian_to_ushort(false, chunk->width) + 1; // we ignore third byte to simplify code | |
| height=endian_to_ushort(false, chunk->height) + 1; // we ignore third byte to simplify code | |
| } else throw Exception(IMAGE_FORMAT, &origin_string, "broken WEBP file - invalid chunk signature"); | |
| } | |
| ///*********************************************** MP4 | |
| struct MP4_Header { | |
| uchar size[4]; | |
| char signature[4]; // 'ftyp' in first chunk | |
| }; | |
| struct MP4_ExtSize { | |
| uchar high[4]; | |
| uchar low[4]; | |
| }; | |
| struct MP4_Tkhd { | |
| uchar width[4]; | |
| uchar height[4]; | |
| }; | |
| static bool measure_mp4(const String& origin_string, Measure_reader& reader, ushort& width, ushort& height, uint64_t anext, const char* lastTkhd=NULL) { | |
| for(bool first=anext==0;;){ | |
| const char* buf; | |
| uint64_t next=reader.tell(); | |
| if(reader.read(buf, sizeof(MP4_Header))<sizeof(MP4_Header)) | |
| throw Exception(IMAGE_FORMAT, &origin_string, first ? "not MP4 file - too small" : "broken MP4 file - truncated chunk header"); | |
| MP4_Header *head=(MP4_Header *)buf; | |
| uint64_t size=endian_to_uint(true, head->size); | |
| if(size==1){ | |
| if(reader.read(buf, sizeof(MP4_ExtSize))<sizeof(MP4_ExtSize)) | |
| throw Exception(IMAGE_FORMAT, &origin_string, "broken MP4 file - truncated chunk extended size header"); | |
| MP4_ExtSize *ext_size=(MP4_ExtSize *)buf; | |
| size=((uint64_t)endian_to_uint(true, ext_size->high) << 32) + endian_to_uint(true, ext_size->low); | |
| } | |
| next+=size; | |
| if(first){ | |
| if(strncmp(head->signature, "ftyp", 4)!=0) | |
| throw Exception(IMAGE_FORMAT, &origin_string, "not MP4 file - wrong signature"); | |
| first=false; | |
| anext=reader.length(); // to avoid reading beyond EOF | |
| } else if(strncmp(head->signature, "moov", 4)==0 || strncmp(head->signature, "mdia", 4)==0 || strncmp(head->signature, "trak", 4)==0) { | |
| if(measure_mp4(origin_string, reader, width, height, next, lastTkhd)) | |
| return true; | |
| } else if(strncmp(head->signature, "tkhd", 4)==0) { | |
| if(size>8){ | |
| reader.seek(next-8); | |
| if(reader.read(lastTkhd, sizeof(MP4_Tkhd))<sizeof(MP4_Tkhd)) | |
| throw Exception(IMAGE_FORMAT, &origin_string, "broken MP4 file - bad tkhd chunk"); | |
| } | |
| } else if (strncmp(head->signature, "hdlr", 4)==0) { | |
| if(size>12){ | |
| const char* hdlr; | |
| if(reader.read(hdlr, 12)<12) | |
| throw Exception(IMAGE_FORMAT, &origin_string, "broken MP4 file - bad hdlr chunk"); | |
| if(lastTkhd && strncmp(hdlr+8, "vide", 4)==0) { | |
| MP4_Tkhd *tkhd=(MP4_Tkhd *)lastTkhd; | |
| width=endian_to_ushort(true, tkhd->width); | |
| height=endian_to_ushort(true, tkhd->height); | |
| return true; | |
| } | |
| } | |
| } | |
| if(anext && next>=anext) | |
| break; | |
| reader.seek(next); | |
| } | |
| return false; | |
| } | |
| static void measure_mp4(const String& origin_string, Measure_reader& reader, ushort& width, ushort& height) { | |
| if(!measure_mp4(origin_string, reader, width, height, 0)) | |
| throw Exception(IMAGE_FORMAT, &origin_string, "unsupported MP4 file - size not found"); | |
| } | } |
| // measure center | ///*********************************************** measure center |
| void measure(Pool& pool, const String& file_name, | static void measure(const String& file_name, Measure_reader& reader, Measure_info &info) { |
| Measure_reader& reader, int& width, int& height) { | const char* file_name_cstr=file_name.taint_cstr(String::L_FILE_SPEC); |
| if(const char *cext=strrchr(file_name.cstr(), '.')) { | if(const char* cext=strrchr(file_name_cstr, '.')) { |
| cext++; | cext++; |
| if(strcasecmp(cext, "GIF")==0) | if(strcasecmp(cext, "GIF")==0) |
| measure_gif(pool, &file_name, reader, width, height); | measure_gif(file_name, reader, info.width, info.height); |
| else if(strcasecmp(cext, "JPG")==0 || strcasecmp(cext, "JPEG")==0) | else if(strcasecmp(cext, "JPG")==0 || strcasecmp(cext, "JPEG")==0) |
| measure_jpeg(pool, &file_name, reader, width, height); | measure_jpeg(file_name, reader, info); |
| else if(strcasecmp(cext, "PNG")==0) | |
| measure_png(file_name, reader, info.width, info.height); | |
| else if(strcasecmp(cext, "BMP")==0) | |
| measure_bmp(file_name, reader, info.width, info.height); | |
| else if(strcasecmp(cext, "WEBP")==0) | |
| measure_webp(file_name, reader, info.width, info.height); | |
| else if(strcasecmp(cext, "TIF")==0 || strcasecmp(cext, "TIFF")==0) | |
| measure_tiff(file_name, reader, info); | |
| else if(strcasecmp(cext, "MP4")==0 || strcasecmp(cext, "MOV")==0) | |
| if(info.video) | |
| measure_mp4(file_name, reader, info.width, info.height); | |
| else | |
| throw Exception(IMAGE_FORMAT, &file_name, "handling disabled for file name extension '%s'", cext); | |
| else | else |
| PTHROW(0, 0, | throw Exception(IMAGE_FORMAT, &file_name, "unhandled file name extension '%s'", cext); |
| &file_name, | |
| "unhandled image file name extension '%s'", cext); | |
| } else | } else |
| PTHROW(0, 0, | throw Exception(IMAGE_FORMAT, &file_name, "cannot determine file type - no file name extension"); |
| &file_name, | |
| "can not determine image type - no file name extension"); | |
| } | |
| /// used by image: _measure / read_mem | |
| struct Read_mem_info { | |
| unsigned char *ptr; | |
| unsigned char *eof; | |
| }; | |
| static size_t read_mem(void*& buf, size_t limit, void *info) { | |
| Read_mem_info& rmi=*static_cast<Read_mem_info *>(info); | |
| buf=rmi.ptr; | |
| size_t read_size=min(limit, (size_t)(rmi.eof-rmi.ptr)); | |
| rmi.ptr+=read_size; | |
| return read_size; | |
| } | |
| /// used by image: _measure / read_disk | |
| struct Read_disk_info { | |
| const String *file_spec; | |
| size_t offset; | |
| }; | |
| static size_t read_disk(void*& buf, size_t limit, void *info) { | |
| Read_disk_info& rdi=*static_cast<Read_disk_info *>(info); | |
| Pool& pool=rdi.file_spec->pool(); | |
| size_t read_size; | |
| file_read(pool, *rdi.file_spec, | |
| buf, read_size, | |
| false/*as_text*/, | |
| true/*fail_on_read_problem*/, | |
| rdi.offset, limit); | |
| rdi.offset+=read_size; | |
| return read_size; | |
| } | } |
| // methods | // methods |
| static void _measure(Request& r, const String& method_name, MethodParams *params) { | static void file_measure_action(struct stat& /*finfo*/, int f, const String& file_spec, void *context) { |
| Pool& pool=r.pool(); | Measure_file_reader reader(f, file_spec); |
| measure(file_spec, reader, *static_cast<Measure_info *>(context)); | |
| } | |
| static void _measure(Request& r, MethodParams& params) { | |
| Value& data=params.as_no_junction(0, "data must not be code"); | |
| Value* exif=0; | |
| Value* xmp=0; | |
| Measure_info info={ 0, 0, 0, 0, &pa_UTF8_charset, false }; | |
| if(params.count()>1) | |
| if(HashStringValue* options=params.as_hash(1, "methods options")) { | |
| int valid_options=0; | |
| for(HashStringValue::Iterator i(*options); i; i.next() ){ | |
| String::Body key=i.key(); | |
| Value* value=i.value(); | |
| if(key == "exif") { | |
| if(r.process(*value).as_bool()) | |
| info.exif=&exif; | |
| valid_options++; | |
| } | |
| if(key == "xmp") { | |
| if(r.process(*value).as_bool()) | |
| info.xmp=&xmp; | |
| valid_options++; | |
| } | |
| if(key == "xmp-charset") { | |
| info.xmp_charset=&pa_charsets.get(value->as_string()); | |
| valid_options++; | |
| } | |
| if(key == "video") { | |
| info.video=r.process(*value).as_bool(); | |
| valid_options++; | |
| } | |
| } | |
| if(valid_options!=options->count()) | |
| throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION); | |
| } | |
| Value& data=params->get_no_junction(0, "data must not be code"); | const String* file_name; |
| void *info;Measure_reader::Func read_func; | if(file_name=data.get_string()) { |
| Read_mem_info read_mem_info; | file_read_action_under_lock(r.full_disk_path(*file_name), "measure", file_measure_action, &info); |
| Read_disk_info read_disk_info; | |
| const String *file_name; | |
| if(data.is_string()) { | |
| file_name=data.get_string(); | |
| read_disk_info.file_spec=&r.absolute(*file_name); | |
| read_disk_info.offset=0; | |
| info=&read_disk_info;read_func=read_disk; | |
| } else { | } else { |
| const VFile& vfile=*data.as_vfile(); | VFile* vfile=data.as_vfile(); |
| file_name=&static_cast<Value *>(vfile.fields().get(*name_name))->as_string(); | file_name=&vfile->fields().get(name_name)->as_string(); |
| read_mem_info.ptr=(unsigned char *)vfile.value_ptr(); | Measure_buf_reader reader(vfile->value_ptr(), vfile->value_size(), *file_name); |
| read_mem_info.eof=read_mem_info.ptr+vfile.value_size(); | measure(*file_name, reader, info); |
| info=&read_mem_info;read_func=read_mem; | |
| } | } |
| Measure_reader reader(read_func, info); | GET_SELF(r, VImage).set(file_name, info.width, info.height, 0, exif, xmp); |
| int width, height; | |
| measure(pool, *file_name, reader, width, height); | |
| static_cast<VImage *>(r.self)->set(file_name, width, height); | |
| } | } |
| /// used by image: _html / append_attrib_pair | static void append_attrib_pair(String &tag, String::Body key, Value* value){ |
| struct Attrib_info { | // skip border attribute with empty value |
| String *tag; ///< html tag being constructed | if(key=="border" && !value->is_defined()) |
| Hash *skip; ///< tag attributes not to append to tag string [to skip] | |
| }; | |
| static void append_attrib_pair(const Hash::Key& key, Hash::Val *val, void *info) { | |
| Attrib_info& ai=*static_cast<Attrib_info *>(info); | |
| if(ai.skip && ai.skip->get(key)) | |
| return; | return; |
| Value& value=*static_cast<Value *>(val); | // src="a.gif" width="123" ismap[=-1] |
| // src="a.gif" width=123 ismap[=-1] | tag << " " << key; |
| *ai.tag << " " << key; | if(value->is_string() || value->as_int()>=0) |
| if(value.is_string() || value.as_int()>=0) | tag << "=\"" << value->as_string() << "\""; |
| *ai.tag << "=\"" << value.as_string() << "\""; | |
| } | } |
| static void _html(Request& r, const String& method_name, MethodParams *params) { | |
| Pool& pool=r.pool(); | |
| String tag(pool); | static void _html(Request& r, MethodParams& params) { |
| String tag; | |
| tag << "<img"; | tag << "<img"; |
| const Hash& fields=static_cast<VImage *>(r.self)->fields(); | const HashStringValue& fields=GET_SELF(r, VImage).fields(); |
| Hash *attribs=0; | HashStringValue* attribs=0; |
| if(params.count()) { | |
| // for backward compatibility: someday was ^html{} | |
| Value& vattribs=r.process(params[0]); | |
| if(!vattribs.is_string()) { // allow empty | |
| if((attribs=vattribs.get_hash())) { | |
| for(HashStringValue::Iterator i(*attribs); i; i.next() ) | |
| append_attrib_pair(tag, i.key(), i.value()); | |
| } else | |
| throw Exception(PARSER_RUNTIME, 0, "attributes must be hash"); | |
| } | |
| } | |
| if(params->size()) | for(HashStringValue::Iterator i(fields); i; i.next() ){ |
| if(attribs=params->get(0).get_hash()) { | String::Body key=i.key(); |
| Attrib_info attrib_info={&tag, 0}; | // skip user-specified attributes |
| attribs->for_each(append_attrib_pair, &attrib_info); | if(attribs && attribs->get(key)) |
| } else | continue; |
| PTHROW(0, 0, | // allow only html attributes (to exclude exif, line-*) |
| &method_name, | if(key=="src" || key=="width" || key=="height" || key=="border") |
| "attributes must be must be hash"); | append_attrib_pair(tag, key, i.value()); |
| } | |
| Attrib_info attrib_info={&tag, attribs}; | |
| fields.for_each(append_attrib_pair, &attrib_info); | |
| tag << " />"; | tag << " />"; |
| r.write_pass_lang(tag); | r.write(tag); |
| } | } |
| static gdImage *load(Request& r, const String& method_name, | /// @test wrap FILE to auto-object |
| const String& file_name){ | static gdImage* load(Request& r, const String& file_name){ |
| Pool& pool=r.pool(); | const char* file_name_cstr=r.full_disk_path(file_name).taint_cstr(String::L_FILE_SPEC); |
| if(FILE *f=pa_fopen(file_name_cstr, "rb")) { | |
| const char *file_name_cstr=r.absolute(file_name).cstr(String::UL_FILE_NAME); | gdImage* image=new gdImage; |
| if(FILE *f=fopen(file_name_cstr, "rb")) { | bool ok=image->CreateFromGif(f); |
| gdImage& image=*new(pool) gdImage(pool); | |
| bool ok=image.CreateFromGif(f); | |
| fclose(f); | fclose(f); |
| if(!ok) | if(!ok) |
| PTHROW(0, 0, | throw Exception(IMAGE_FORMAT, &file_name, "is not in GIF format"); |
| &file_name, | return image; |
| "is not in GIF format"); | |
| return ℑ | |
| } else { | } else { |
| PTHROW(0, 0, | throw Exception("file.missing", 0, "cannot open '%s'", file_name_cstr); |
| &method_name, | |
| "can not open '%s'", file_name_cstr); | |
| return 0; | |
| } | } |
| } | } |
| static void _load(Request& r, const String& method_name, MethodParams *params) { | static void _load(Request& r, MethodParams& params) { |
| Pool& pool=r.pool(); | const String& file_name=params.as_string(0, FILE_NAME_MUST_NOT_BE_CODE); |
| Value& vfile_name=params->get_no_junction(0, "file name must not be code"); | |
| const String& file_name=vfile_name.as_string(); | |
| gdImage& image=*load(r, method_name, file_name); | gdImage* image=load(r, file_name); |
| int width=image.SX(); | GET_SELF(r, VImage).set(&file_name, image->SX(), image->SY(), image); |
| int height=image.SY(); | |
| static_cast<VImage *>(r.self)->set(&file_name, width, height, &image); | |
| } | } |
| static void _create(Request& r, const String& method_name, MethodParams *params) { | static void _create(Request& r, MethodParams& params) { |
| Pool& pool=r.pool(); | int width=params.as_int(0, "width must be int", r); |
| int height=params.as_int(1, "height must be int", r); | |
| int width=r.process(params->get(0)).as_int(); | |
| int height=r.process(params->get(1)).as_int(); | |
| int bgcolor_value=0xffFFff; | int bgcolor_value=0xffFFff; |
| if(params->size()>2) | if(params.count()>2) |
| bgcolor_value=r.process(params->get(2)).as_int(); | bgcolor_value=params.as_int(2, "color must be int", r); |
| gdImage& image=*new(pool) gdImage(pool); | gdImage* image=new gdImage; |
| image.Create(width, height); | image->Create(width, height); |
| image.FilledRectangle(0, 0, width-1, height-1, image.Color(bgcolor_value)); | image->FilledRectangle(0, 0, width-1, height-1, image->Color(bgcolor_value)); |
| static_cast<VImage *>(r.self)->set(0, width, height, &image); | GET_SELF(r, VImage).set(0, width, height, image); |
| } | } |
| static void _gif(Request& r, const String& method_name, MethodParams *params) { | |
| Pool& pool=r.pool(); | |
| gdImage *image=static_cast<VImage *>(r.self)->image; | |
| if(!image) | |
| PTHROW(0, 0, | |
| &method_name, | |
| "does not contain an image"); | |
| // could _ but don't thing it's wise to use $image.src for vfile.name | static void _gif(Request& r, MethodParams& params) { |
| gdImage& image=GET_SELF(r, VImage).image(); | |
| String out(pool); image->Gif(out); | const String *file_name=params.count()>0?¶ms.as_string(0, FILE_NAME_MUST_BE_STRING):0; |
| VFile& vfile=*new(pool) VFile(pool); | |
| String& image_gif=*new(pool) String(pool, "image/gif"); | |
| vfile.set(false/*not tainted*/, | |
| out.cstr(String::UL_AS_IS), out.size(), 0, &image_gif); | |
| r.write_no_lang(vfile); | |
| } | |
| static void _line(Request& r, const String& method_name, MethodParams *params) { | |
| Pool& pool=r.pool(); | |
| gdImage *image=static_cast<VImage *>(r.self)->image; | |
| if(!image) | |
| PTHROW(0, 0, | |
| &method_name, | |
| "does not contain an image"); | |
| image->Line( | |
| r.process(params->get(0)).as_int(), | |
| r.process(params->get(1)).as_int(), | |
| r.process(params->get(2)).as_int(), | |
| r.process(params->get(3)).as_int(), | |
| image->Color(r.process(params->get(4)).as_int())); | |
| } | |
| static void _fill(Request& r, const String& method_name, MethodParams *params) { | |
| Pool& pool=r.pool(); | |
| gdImage *image=static_cast<VImage *>(r.self)->image; | |
| if(!image) | |
| PTHROW(0, 0, | |
| &method_name, | |
| "does not contain an image"); | |
| image->Fill( | |
| r.process(params->get(0)).as_int(), | |
| r.process(params->get(1)).as_int(), | |
| image->Color(r.process(params->get(2)).as_int())); | |
| } | |
| static void _rectangle(Request& r, const String& method_name, MethodParams *params) { | |
| Pool& pool=r.pool(); | |
| gdImage *image=static_cast<VImage *>(r.self)->image; | |
| if(!image) | |
| PTHROW(0, 0, | |
| &method_name, | |
| "does not contain an image"); | |
| image->Rectangle( | |
| r.process(params->get(0)).as_int(), | |
| r.process(params->get(1)).as_int(), | |
| r.process(params->get(2)).as_int(), | |
| r.process(params->get(3)).as_int(), | |
| image->Color(r.process(params->get(4)).as_int())); | |
| } | |
| static void _bar(Request& r, const String& method_name, MethodParams *params) { | |
| Pool& pool=r.pool(); | |
| gdImage *image=static_cast<VImage *>(r.self)->image; | |
| if(!image) | |
| PTHROW(0, 0, | |
| &method_name, | |
| "does not contain an image"); | |
| image->FilledRectangle( | |
| r.process(params->get(0)).as_int(), | |
| r.process(params->get(1)).as_int(), | |
| r.process(params->get(2)).as_int(), | |
| r.process(params->get(3)).as_int(), | |
| image->Color(r.process(params->get(4)).as_int())); | |
| } | |
| static void _replace(Request& r, const String& method_name, MethodParams *params) { | |
| Pool& pool=r.pool(); | |
| gdImage *image=static_cast<VImage *>(r.self)->image; | |
| if(!image) | |
| PTHROW(0, 0, | |
| &method_name, | |
| "does not contain an image"); | |
| if((params->size()-2)%2) // I see your thoughts, but that's more readable | |
| PTHROW(0, 0, | |
| &method_name, | |
| "y coordinate missing"); | |
| int n=(params->size()-2)/2; | gdBuf buf=image.Gif(); |
| gdImage::Point *p=(gdImage::Point *)pool.malloc(sizeof(gdImage::Point)*n); | VFile& vfile=*new VFile; |
| for(int i=0; i<n; i++) { | |
| p[i].x=r.process(params->get(2+i*2+0)).as_int(); | |
| p[i].y=r.process(params->get(2+i*2+1)).as_int(); | |
| } | |
| image->FilledPolygonReplaceColor(p, n, | |
| image->Color(r.process(params->get(0)).as_int()), // src color | |
| image->Color(r.process(params->get(1)).as_int()));// dest color | |
| } | |
| static void _polygon(Request& r, const String& method_name, MethodParams *params) { | |
| Pool& pool=r.pool(); | |
| gdImage *image=static_cast<VImage *>(r.self)->image; | |
| if(!image) | |
| PTHROW(0, 0, | |
| &method_name, | |
| "does not contain an image"); | |
| if((params->size()-1)%2) // [I see..] see now? | |
| PTHROW(0, 0, | |
| &method_name, | |
| "y coordinate missing"); | |
| int n=(params->size()-1)/2; | vfile.set_binary(false/*not tainted*/, (const char *)buf.ptr, buf.size, file_name, new VString(*new String("image/gif"))); |
| gdImage::Point *p=(gdImage::Point *)pool.malloc(sizeof(gdImage::Point)*n); | |
| for(int i=0; i<n; i++) { | |
| p[i].x=r.process(params->get(1+i*2+0)).as_int(); | |
| p[i].y=r.process(params->get(1+i*2+1)).as_int(); | |
| } | |
| image->Polygon(p, n, | |
| image->Color(r.process(params->get(0)).as_int())); | |
| } | |
| static void _polybar(Request& r, const String& method_name, MethodParams *params) { | |
| Pool& pool=r.pool(); | |
| gdImage *image=static_cast<VImage *>(r.self)->image; | |
| if(!image) | |
| PTHROW(0, 0, | |
| &method_name, | |
| "does not contain an image"); | |
| if((params->size()-1)%2) // [I see..] see now? | |
| PTHROW(0, 0, | |
| &method_name, | |
| "y coordinate missing"); | |
| int n=(params->size()-1)/2; | r.write(vfile); |
| } | |
| gdImage::Point *p=(gdImage::Point *)pool.malloc(sizeof(gdImage::Point)*n); | |
| for(int i=0; i<n; i++) { | static void _line(Request& r, MethodParams& params) { |
| p[i].x=r.process(params->get(1+i*2+0)).as_int(); | gdImage& image=GET_SELF(r, VImage).image(); |
| p[i].y=r.process(params->get(1+i*2+1)).as_int(); | |
| image.Line( | |
| params.as_int(0, "x0 must be int", r), | |
| params.as_int(1, "y0 must be int", r), | |
| params.as_int(2, "x1 must be int", r), | |
| params.as_int(3, "y1 must be int", r), | |
| image.Color(params.as_int(4, "color must be int", r))); | |
| } | |
| static void _fill(Request& r, MethodParams& params) { | |
| gdImage& image=GET_SELF(r, VImage).image(); | |
| image.Fill( | |
| params.as_int(0, "x must be int", r), | |
| params.as_int(1, "y must be int", r), | |
| image.Color(params.as_int(2, "color must be int", r))); | |
| } | |
| static void _rectangle(Request& r, MethodParams& params) { | |
| gdImage& image=GET_SELF(r, VImage).image(); | |
| image.Rectangle( | |
| params.as_int(0, "x0 must be int", r), | |
| params.as_int(1, "y0 must be int", r), | |
| params.as_int(2, "x1 must be int", r), | |
| params.as_int(3, "y1 must be int", r), | |
| image.Color(params.as_int(4, "color must be int", r))); | |
| } | |
| static void _bar(Request& r, MethodParams& params) { | |
| gdImage& image=GET_SELF(r, VImage).image(); | |
| image.FilledRectangle( | |
| params.as_int(0, "x0 must be int", r), | |
| params.as_int(1, "y0 must be int", r), | |
| params.as_int(2, "x1 must be int", r), | |
| params.as_int(3, "y1 must be int", r), | |
| image.Color(params.as_int(4, "color must be int", r))); | |
| } | |
| #ifndef DOXYGEN | |
| static void add_point(Table::element_type row, gdImage::Point **p) { | |
| if(row->count()!=2) | |
| throw Exception(0, 0, "coordinates table must contain two columns: x and y values"); | |
| (**p).x=row->get(0)->as_int(); | |
| (**p).y=row->get(1)->as_int(); | |
| (*p)++; | |
| } | |
| #endif | |
| #ifndef DOXYGEN | |
| static void add_point(int x, int y, gdImage::Point **p) { | |
| (**p).x=x; | |
| (**p).y=y; | |
| (*p)++; | |
| } | |
| #endif | |
| static void _replace(Request& r, MethodParams& params) { | |
| int src_color=params.as_int(0, "src color must be int", r); | |
| int dest_color=params.as_int(1, "dest color must be int", r); | |
| gdImage& image=GET_SELF(r, VImage).image(); | |
| gdImage::Point* all_p=0; | |
| size_t count=0; | |
| if(params.count() == 3){ | |
| if(Table* table=params.as_table(2, "coordinates")){ | |
| count=table->count(); | |
| all_p=new(PointerFreeGC) gdImage::Point[count]; | |
| gdImage::Point* add_p=all_p; | |
| table->for_each(add_point, &add_p); | |
| } | |
| } else { | |
| int max_x=image.SX()-1; | |
| int max_y=image.SY()-1; | |
| if(max_x > 0 && max_y > 0){ | |
| count=4; | |
| all_p=new(PointerFreeGC) gdImage::Point[count]; | |
| gdImage::Point* add_p=all_p; | |
| add_point(0, 0, &add_p); | |
| add_point(max_x, 0, &add_p); | |
| add_point(max_x, max_y, &add_p); | |
| add_point(0, max_y, &add_p); | |
| } | |
| } | } |
| image->FilledPolygon(p, n, | |
| image->Color(r.process(params->get(0)).as_int())); | if(count) |
| image.FilledPolygonReplaceColor(all_p, count, image.Color(src_color), image.Color(dest_color)); | |
| } | } |
| // font | static void _polyline(Request& r, MethodParams& params) { |
| gdImage& image=GET_SELF(r, VImage).image(); | |
| #define Y(y)(y+index*height+1) | if(Table* table=params.as_table(1, "coordinates")){ |
| gdImage::Point* all_p=new(PointerFreeGC) gdImage::Point[table->count()]; | |
| gdImage::Point *add_p=all_p; | |
| table->for_each(add_point, &add_p); | |
| image.Polygon(all_p, table->count(), image.Color(params.as_int(0, "color must be int", r)), false/*not closed*/); | |
| } | |
| } | |
| /// simple gdImage-based font storage & text output | static void _polygon(Request& r, MethodParams& params) { |
| class Font : public Pooled { | gdImage& image=GET_SELF(r, VImage).image(); |
| public: | |
| if(Table* table=(Table*)params.as_table(1, "coordinates")){ | |
| int height; //< Font heigth | gdImage::Point* all_p=new(PointerFreeGC) gdImage::Point[table->count()]; |
| int space; //< Default char width | gdImage::Point *add_p=all_p; |
| gdImage& ifont; | table->for_each(add_point, &add_p); |
| const String& alphabet; | image.Polygon(all_p, table->count(), image.Color(params.as_int(0, "color must be int", r))); |
| Font(Pool& pool, | |
| const String& aalphabet, | |
| gdImage& aifont, int aheight, int aspace) : Pooled(pool), | |
| alphabet(aalphabet), | |
| height(aheight), space(aspace), | |
| ifont(aifont) { | |
| } | } |
| } | |
| /* ******************************** char ********************************** */ | |
| static void _polybar(Request& r, MethodParams& params) { | |
| int index_of(char ch) { | gdImage& image=GET_SELF(r, VImage).image(); |
| if(ch==' ') return -1; | |
| return alphabet.pos(&ch, 1); | if(Table* table=(Table*)params.as_table(1, "coordinates")){ |
| gdImage::Point* all_p=new(PointerFreeGC) gdImage::Point[table->count()]; | |
| gdImage::Point *add_p=all_p; | |
| table->for_each(add_point, &add_p); | |
| image.FilledPolygon(all_p, table->count(), image.Color(params.as_int(0, "color must be int", r))); | |
| } | } |
| } | |
| int index_width(int index) { | |
| if(index<0) | // font |
| index=index_of('.'); | |
| if(index<0) | #define Y(y)(y+index*height) |
| return 0; | |
| int tr=ifont.GetTransparent(); | // Font class |
| for(int x=ifont.SX()-1; x>0; x--) { | |
| for(int y=0; y<height-1; y++) | Font::Font(Charset& asource_charset, const String& aalphabet, gdImage* aifont, int aheight, int amonospace, int aspacebarspace, int aletterspacing): |
| if(ifont.GetPixel(x, Y(y))!=tr) | letterspacing(aletterspacing), |
| return x+2; | height(aheight), |
| } | monospace(amonospace), |
| return 0; | spacebarspace(aspacebarspace), |
| ifont(aifont), | |
| alphabet(aalphabet), | |
| fsource_charset(asource_charset){ | |
| if(fsource_charset.isUTF8()){ | |
| size_t index=0; | |
| for(UTF8_string_iterator i(alphabet); i.has_next(); ) | |
| fletter2index.put_dont_replace(i.next(), index++); | |
| } | } |
| } | |
| void index_display(gdImage& image, int x, int y, int index){ | |
| if(index>=0) | /* ******************************** char ********************************** */ |
| ifont.Copy(image, x, y, 0, Y(0), index_width(index), height-1); | |
| size_t Font::index_of(char ch) { | |
| if(ch==' ') return STRING_NOT_FOUND; | |
| return alphabet.pos(ch); | |
| } | |
| size_t Font::index_of(XMLCh ch) { | |
| if(ch==' ') return STRING_NOT_FOUND; | |
| return fletter2index.get(ch); | |
| } | |
| int Font::index_width(size_t index) { | |
| if(index==STRING_NOT_FOUND) | |
| return spacebarspace; | |
| int tr=ifont->GetTransparent(); | |
| for(int x=ifont->SX()-1; x>=0; x--) { | |
| for(int y=0; y<height; y++) | |
| if(ifont->GetPixel(x, Y(y))!=tr) | |
| return x+1; | |
| } | } |
| return 0; | |
| /* ******************************** string ********************************** */ | } |
| /* | |
| int string_width(const char *cstr){ | void Font::index_display(gdImage& image, int x, int y, size_t index){ |
| int result=0; | if(index!=STRING_NOT_FOUND) |
| for(; *cstr; cstr++) | ifont->Copy(image, x, y, 0, Y(0), index_width(index), height); |
| result+=index_width(index_of(*cstr)); | } |
| return result; | |
| /* ******************************** string ********************************** */ | |
| int Font::step_width(int index) { | |
| return letterspacing + (monospace ? monospace : index_width(index)); | |
| } | |
| // counts trailing letter_spacing, consider this OK. useful for contiuations | |
| int Font::string_width(const String& s){ | |
| const char* cstr=s.cstr(); | |
| int result=0; | |
| if(fsource_charset.isUTF8()){ | |
| for(UTF8_string_iterator i(s); i.has_next(); ) | |
| result+=step_width(index_of(i.next())); | |
| } else { | |
| for(const char* current=cstr; *current; current++) | |
| result+=step_width(index_of(*current)); | |
| } | } |
| */ | |
| return result; | |
| void string_display(gdImage& image, int x, int y, const String& s){ | } |
| const char *cstr=s.cstr(String::UL_AS_IS); | |
| if(cstr) for(; *cstr; cstr++) { | void Font::string_display(gdImage& image, int x, int y, const String& s){ |
| int index=index_of(*cstr); | const char* cstr=s.cstr(); |
| if(fsource_charset.isUTF8()){ | |
| for(UTF8_string_iterator i(s); i.has_next(); ){ | |
| size_t index=index_of(i.next()); | |
| index_display(image, x, y, index); | |
| x+=step_width(index); | |
| } | |
| } else { | |
| for(const char* current=cstr; *current; current++) { | |
| size_t index=index_of(*current); | |
| index_display(image, x, y, index); | index_display(image, x, y, index); |
| x+=space ? space : index_width(index); | x+=step_width(index); |
| } | |
| } | |
| } | |
| // | |
| static void _font(Request& r, MethodParams& params) { | |
| const String& alphabet=params.as_string(0, "alphabet must not be code"); | |
| size_t alphabet_length=alphabet.length(r.charsets.source()); | |
| if(!alphabet_length) | |
| throw Exception(PARSER_RUNTIME, 0, "alphabet must not be empty"); | |
| gdImage* image=load(r, params.as_string(1, FILE_NAME_MUST_NOT_BE_CODE)); | |
| int spacebar_width=image->SX(); | |
| int monospace_width=0; // proportional | |
| int letter_spacing=1; | |
| if(params.count()>2){ | |
| if(HashStringValue* options=params[2].get_hash()){ | |
| // third option is hash | |
| if(params.count()>3) | |
| throw Exception(PARSER_RUNTIME, 0, "too many params were specified"); | |
| int valid_options=0; | |
| if(Value* vspacebar_width=options->get(spacebar_width_name)){ | |
| valid_options++; | |
| spacebar_width=r.process(*vspacebar_width).as_int(); | |
| } | |
| if(Value* vmonospace_width=options->get(monospace_width_name)){ | |
| valid_options++; | |
| monospace_width=r.process(*vmonospace_width).as_int(); | |
| if(!monospace_width) | |
| monospace_width=image->SX(); | |
| } | |
| if(Value* vletter_spacing=options->get(letter_spacing_name)){ | |
| valid_options++; | |
| letter_spacing=r.process(*vletter_spacing).as_int(); | |
| } | |
| if(valid_options!=options->count()) | |
| throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION); | |
| } else { | |
| // backward | |
| spacebar_width=params.as_int(2, "param must be int or hash", r); | |
| if(params.count()>3) { | |
| monospace_width=params.as_int(3, "monospace_width must be int", r); | |
| if(!monospace_width) | |
| monospace_width=image->SX(); | |
| } | |
| } | } |
| } | } |
| if(int remainder=image->SY() % alphabet_length) | |
| throw Exception(PARSER_RUNTIME, 0, "font-file height(%d) not divisable by alphabet size(%d), remainder=%d", image->SY(), alphabet_length, remainder); | |
| }; | GET_SELF(r, VImage).set_font(new Font(r.charsets.source(), alphabet, image, image->SY() / alphabet_length, monospace_width, spacebar_width, letter_spacing)); |
| static void _font(Request& r, const String& method_name, MethodParams *params) { | } |
| Pool& pool=r.pool(); | |
| static void _text(Request& r, MethodParams& params) { | |
| int x=params.as_int(0, "x must be int", r); | |
| int y=params.as_int(1, "y must be int", r); | |
| const String& s=params.as_string(2, "text must not be code"); | |
| Value& valphabet=params->get_no_junction(0, "alphabet must not be code"); | VImage& vimage=GET_SELF(r, VImage); |
| Value& file_name=params->get_no_junction(1, "file_name must not be code"); | vimage.font().string_display(vimage.image(), x, y, s); |
| int height=r.process(params->get(2)).as_int(); | } |
| int width=params->size()>3?r.process(params->get(3)).as_int():0; | static void _length(Request& r, MethodParams& params) { |
| const String& s=params.as_string(0, "text must not be code"); | |
| static_cast<VImage *>(r.self)->font=new(pool) Font(pool, | VImage& vimage=GET_SELF(r, VImage); |
| valphabet.as_string(), | r.write(*new VInt(vimage.font().string_width(s))); |
| *load(r, method_name, file_name.as_string()), | |
| height, width); | |
| } | } |
| static void _text(Request& r, const String& method_name, MethodParams *params) { | static void _arc(Request& r, MethodParams& params) { |
| Pool& pool=r.pool(); | gdImage& image=GET_SELF(r, VImage).image(); |
| int x=r.process(params->get(0)).as_int(); | image.Arc( |
| int y=r.process(params->get(1)).as_int(); | params.as_int(0, "center_x must be int", r), |
| const String& s=r.process(params->get(2)).as_string(); | params.as_int(1, "center_y must be int", r), |
| params.as_int(2, "width must be int", r), | |
| params.as_int(3, "height must be int", r), | |
| params.as_int(4, "start degrees must be int", r), | |
| params.as_int(5, "end degrees must be int", r), | |
| image.Color(params.as_int(6, "cx must be int", r))); | |
| } | |
| VImage& vimage=*static_cast<VImage *>(r.self); | static void _sector(Request& r, MethodParams& params) { |
| if(vimage.image) | gdImage& image=GET_SELF(r, VImage).image(); |
| if(vimage.font) | |
| vimage.font->string_display(*vimage.image, x, y, s); | image.Sector( |
| else | params.as_int(0, "center_x must be int", r), |
| PTHROW(0, 0, | params.as_int(1, "center_y must be int", r), |
| &method_name, | params.as_int(2, "width must be int", r), |
| "set the font first"); | params.as_int(3, "height must be int", r), |
| else | params.as_int(4, "start degrees must be int", r), |
| PTHROW(0, 0, | params.as_int(5, "end degrees must be int", r), |
| &method_name, | image.Color(params.as_int(6, "color must be int", r))); |
| "does not contain an image"); | |
| } | } |
| // constructor | static void _circle(Request& r, MethodParams& params) { |
| gdImage& image=GET_SELF(r, VImage).image(); | |
| MImage::MImage(Pool& apool) : Methoded(apool) { | int size=params.as_int(2, "radius must be int", r)*2; |
| set_name(*NEW String(pool(), IMAGE_CLASS_NAME)); | image.Arc( |
| params.as_int(0, "center_x must be int", r), | |
| params.as_int(1, "center_y must be int", r), | |
| size, //w | |
| size, //h | |
| 0, //s | |
| 360, //e | |
| image.Color(params.as_int(3, "color must be int", r))); | |
| } | |
| gdImage& as_image(MethodParams& params, int index, const char* msg) { | |
| Value& value=params.as_no_junction(index, msg); | |
| if(VImage* vimage=dynamic_cast<VImage *>(&value)) { | |
| return vimage->image(); | |
| } else | |
| throw Exception(PARSER_RUNTIME, 0, msg); | |
| } | |
| static void _copy(Request& r, MethodParams& params) { | |
| gdImage& dest=GET_SELF(r, VImage).image(); | |
| gdImage& src=as_image(params, 0, "src must be image"); | |
| int sx=params.as_int(1, "src_x must be int", r); | |
| int sy=params.as_int(2, "src_y must be int", r); | |
| int sw=params.as_int(3, "src_w must be int", r); | |
| int sh=params.as_int(4, "src_h must be int", r); | |
| int dx=params.as_int(5, "dest_x must be int", r); | |
| int dy=params.as_int(6, "dest_y must be int", r); | |
| if(params.count()>1+2+2+2) { | |
| int dw=params.as_int(1+2+2+2, "dest_w must be int", r); | |
| int dh=(int)(params.count()>1+2+2+2+1? | |
| params.as_int(1+2+2+2+1, "dest_h must be int", r):sh*(((double)dw)/((double)sw))); | |
| int tolerance=params.count()>1+2+2+2+2? | |
| params.as_int(1+2+2+2+2, "tolerance must be int", r):150; | |
| src.CopyResampled(dest, dx, dy, sx, sy, dw, dh, sw, sh, tolerance); | |
| } else | |
| src.Copy(dest, dx, dy, sx, sy, sw, sh); | |
| } | |
| static void _pixel(Request& r, MethodParams& params) { | |
| gdImage& image=GET_SELF(r, VImage).image(); | |
| int x=params.as_int(0, "x must be int", r); | |
| int y=params.as_int(1, "y must be int", r); | |
| if(params.count()>2) { | |
| image.SetPixel(x, y, | |
| image.Color(params.as_int(2, "color must be int", r))); | |
| } else | |
| r.write(*new VInt(image.DecodeColor(image.GetPixel(x, y)))); | |
| } | |
| // constructor | |
| MImage::MImage(): Methoded("image") { | |
| // ^image:measure[DATA] | // ^image:measure[DATA] |
| add_native_method("measure", Method::CT_DYNAMIC, _measure, 1, 1); | // ^image:measure[DATA; $.exif(false) $.xmp(false) $.xmp-charset[UTF-8] ] |
| add_native_method("measure", Method::CT_DYNAMIC, _measure, 1, 2); | |
| // ^image.html[] | // ^image.html[] |
| // ^image.html[hash] | // ^image.html[hash] |
| Line 660 MImage::MImage(Pool& apool) : Methoded(a | Line 1517 MImage::MImage(Pool& apool) : Methoded(a |
| add_native_method("create", Method::CT_DYNAMIC, _create, 2, 3); | add_native_method("create", Method::CT_DYNAMIC, _create, 2, 3); |
| // ^image.gif[] | // ^image.gif[] |
| add_native_method("gif", Method::CT_DYNAMIC, _gif, 0, 0); | add_native_method("gif", Method::CT_DYNAMIC, _gif, 0, 1); |
| // ^image.line(x0;y0;x1;y1;color) | // ^image.line(x0;y0;x1;y1;color) |
| add_native_method("line", Method::CT_DYNAMIC, _line, 5, 5); | add_native_method("line", Method::CT_DYNAMIC, _line, 5, 5); |
| Line 674 MImage::MImage(Pool& apool) : Methoded(a | Line 1531 MImage::MImage(Pool& apool) : Methoded(a |
| // ^image.bar(x0;y0;x1;y1;color) | // ^image.bar(x0;y0;x1;y1;color) |
| add_native_method("bar", Method::CT_DYNAMIC, _bar, 5, 5); | add_native_method("bar", Method::CT_DYNAMIC, _bar, 5, 5); |
| // ^image.replace(color-source;color-dest)(x;y)... point coord pairs | // ^image.replace(color-source;color-dest)[table x:y] |
| add_native_method("replace", Method::CT_DYNAMIC, _replace, 2+3*2, 2+100*2); | // ^image.replace(color-source;color-dest) |
| add_native_method("replace", Method::CT_DYNAMIC, _replace, 2, 3); | |
| // ^image.polyline(color)[table x:y] | |
| add_native_method("polyline", Method::CT_DYNAMIC, _polyline, 2, 2); | |
| // ^image.polygon(color)[table x:y] | |
| add_native_method("polygon", Method::CT_DYNAMIC, _polygon, 2, 2); | |
| // ^image.polybar(color)[table x:y] | |
| add_native_method("polybar", Method::CT_DYNAMIC, _polybar, 2, 2); | |
| // ^image.font[alPHAbet;font-file-name.gif] | |
| // ^image.font[alPHAbet;font-file-name.gif](spacebar_width) | |
| // ^image.font[alPHAbet;font-file-name.gif](spacebar_width;letter_width) | |
| // ^image.font[alPHAbet;font-file-name.gif][$.space-width(.) $.letter-width(.) $.letter-space(.)] | |
| add_native_method("font", Method::CT_DYNAMIC, _font, 2, 4); | |
| // ^image.polygon(color)(x;y)... point coord pairs | // ^image.text(x;y)[text] |
| add_native_method("polygon", Method::CT_DYNAMIC, _polygon, 1+3*2, 1+100*2); | |
| // ^image.polybar(color)(x;y)... point coord pairs | |
| add_native_method("polybar", Method::CT_DYNAMIC, _polybar, 1+3*2, 1+100*2); | |
| // ^image.font[alPHAbet;font-file-name.gif](height) | |
| // ^image.font[alPHAbet;font-file-name.gif](height;width) | |
| add_native_method("font", Method::CT_DYNAMIC, _font, 3, 4); | |
| // ^image.text(x;y)[text] | |
| add_native_method("text", Method::CT_DYNAMIC, _text, 3, 3); | add_native_method("text", Method::CT_DYNAMIC, _text, 3, 3); |
| } | // ^image.length[text] |
| add_native_method("length", Method::CT_DYNAMIC, _length, 1, 1); | |
| // ^image.arc(center x;center y;width;height;start in degrees;end in degrees;color) | |
| add_native_method("arc", Method::CT_DYNAMIC, _arc, 7, 7); | |
| // global variable | // ^image.sector(center x;center y;width;height;start in degrees;end in degrees;color) |
| add_native_method("sector", Method::CT_DYNAMIC, _sector, 7, 7); | |
| Methoded *image_class; | // ^image.circle(center x;center y;r;color) |
| add_native_method("circle", Method::CT_DYNAMIC, _circle, 4, 4); | |
| // creator | // ^image.copy[source](src x;src y;src w;src h;dst x;dst y[;dest w[;dest h[;tolerance]]]) |
| add_native_method("copy", Method::CT_DYNAMIC, _copy, 1+2+2+2, (1+2+2+2)+2+1); | |
| Methoded *MImage_create(Pool& pool) { | // ^image.pixel(x;y)[(color)] |
| return image_class=new(pool) MImage(pool); | add_native_method("pixel", Method::CT_DYNAMIC, _pixel, 2, 3); |
| } | } |