|
|
| version 1.147, 2015/09/18 00:08:12 | 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) 2001-2012 Art. Lebedev Studio (http://www.artlebedev.com) | Copyright (c) 2001-2024 Art. Lebedev Studio (http://www.artlebedev.com) |
| Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru) | Authors: Konstantin Morshnev <moko@design.ru>, Alexandr Petrosian <paf@design.ru> |
| */ | */ |
| /* | /* |
| Line 24 | Line 24 |
| #include "pa_vimage.h" | #include "pa_vimage.h" |
| #include "pa_vdate.h" | #include "pa_vdate.h" |
| #include "pa_table.h" | #include "pa_table.h" |
| #include "pa_charsets.h" | |
| volatile const char * IDENT_IMAGE_C="$Id$"; | volatile const char * IDENT_IMAGE_C="$Id$"; |
| Line 45 public: | Line 46 public: |
| // globals | // globals |
| DECLARE_CLASS_VAR(image, new MImage, 0); | DECLARE_CLASS_VAR(image, new MImage); |
| // helpers | // helpers |
| Line 179 public: | Line 180 public: |
| EXIF_TAG(0xa40b, DeviceSettingDescription); | EXIF_TAG(0xa40b, DeviceSettingDescription); |
| EXIF_TAG(0xa40c, SubjectDistanceRange); | EXIF_TAG(0xa40c, SubjectDistanceRange); |
| EXIF_TAG(0xa420, ImageUniqueID); | 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; | |
| } | } |
| } exif_tag_value2name; | }; |
| class EXIF_gps_tag_value2name: public Hash<int, const char*> { | class EXIF_gps_tag_value2name: public Hash<int, const char*> { |
| public: | public: |
| Line 217 public: | Line 233 public: |
| EXIF_TAG(0x1D, GPSDateStamp); | EXIF_TAG(0x1D, GPSDateStamp); |
| EXIF_TAG(0x1E, GPSDifferential); | EXIF_TAG(0x1E, GPSDifferential); |
| } | } |
| } exif_gps_tag_value2name; | |
| #undef EXIF_TAG | 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 | |
| #ifndef DOXYGEN | |
| class Measure_reader { | class Measure_reader { |
| public: | public: |
| virtual size_t read(const char* &buf, size_t limit)=0; | virtual size_t read(const char* &buf, size_t limit)=0; |
| virtual void seek(long value, int whence)=0; | virtual void seek(uint64_t value)=0; |
| virtual long tell()=0; | virtual uint64_t tell()=0; |
| virtual uint64_t length()=0; | |
| }; | }; |
| class Measure_file_reader: public Measure_reader { | class Measure_file_reader: public Measure_reader { |
| const String& file_name; const char* fname; | const String& file_name; |
| int f; | int f; |
| public: | public: |
| Measure_file_reader(int af, const String& afile_name, const char* afname): | Measure_file_reader(int af, const String& afile_name): |
| file_name(afile_name), fname(afname), f(af) { | file_name(afile_name), f(af) { |
| } | } |
| override size_t read(const char* &abuf, size_t limit) { | override size_t read(const char* &abuf, size_t limit) { |
| Line 249 public: | Line 274 public: |
| return read_size; | return read_size; |
| } | } |
| override void seek(long value, int whence) { | override void seek(uint64_t value) { |
| if(lseek(f, value, whence)<0) | if(pa_lseek(f, value, SEEK_SET)<0) |
| throw Exception(IMAGE_FORMAT, | throw Exception(IMAGE_FORMAT, &file_name, "seek to %.15g failed: %s (%d)", (double)value, strerror(errno), errno); |
| &file_name, | |
| "seek(value=%ld, whence=%d) failed: %s (%d), actual filename '%s'", | |
| value, whence, strerror(errno), errno, fname); | |
| } | } |
| override long tell() { return lseek(f, 0, SEEK_CUR); } | override uint64_t tell() { return pa_lseek(f, 0, SEEK_CUR); } |
| override uint64_t length() { return pa_lseek(f, 0, SEEK_END); } | |
| }; | }; |
| Line 280 public: | Line 304 public: |
| return to_read; | return to_read; |
| } | } |
| override void seek(long value, int whence) { | override void seek(uint64_t value) { |
| size_t new_offset; | if(value>(uint64_t)size) |
| switch(whence) { | throw Exception(IMAGE_FORMAT, &file_name, "seek to %.15g failed: out of buffer (%.15g)", value, size); |
| case SEEK_CUR: new_offset=offset+value; break; | offset=(size_t)value; |
| case SEEK_SET: new_offset=(size_t)value; break; | |
| default: | |
| throw Exception(0, | |
| 0, | |
| "whence #%d not supported", 0, whence); | |
| break; // never | |
| } | |
| if((ssize_t)new_offset<0 || new_offset>size) | |
| throw Exception(IMAGE_FORMAT, | |
| &file_name, | |
| "seek(value=%l, whence=%d) failed: out of buffer, new_offset>size (%l>%l) or new_offset<0", | |
| value, whence, new_offset, size); | |
| offset=new_offset; | |
| } | } |
| override long tell() { return offset; } | override uint64_t tell() { return offset; } |
| override uint64_t length() { return size; } | |
| }; | }; |
| #endif | |
| /// PNG file header | struct Measure_info { |
| struct PNG_Header { | ushort width; |
| char dummy[12]; | ushort height; |
| char signature[4]; //< must be "IHDR" | Value** exif; |
| uchar high_width[2]; //< image width high bytes [we ignore for now] | Value** xmp; |
| uchar width[2]; //< image width low bytes | Charset* xmp_charset; |
| uchar high_height[2]; //< image height high bytes [we ignore for now] | bool video; |
| uchar height[4]; //< image height | |
| }; | }; |
| /// GIF file header | |
| struct GIF_Header { | |
| char signature[3]; // 'GIF' | |
| char version[3]; | |
| uchar width[2]; | |
| uchar height[2]; | |
| char dif; | |
| char fonColor; | |
| char nulls; | |
| }; | |
| /// JPEG record head | inline ushort x_endian_to_ushort(uchar b0, uchar b1) { |
| return (ushort)((b1<<8) + b0); | |
| } | |
| inline uint x_endian_to_uint(uchar b0, uchar b1, uchar b2, uchar b3) { | |
| return (uint)(((((b3<<8) + b2)<<8)+b1)<<8)+b0; | |
| } | |
| inline ushort endian_to_ushort(bool is_big, const uchar *b/* [2] */) { | |
| return is_big ? x_endian_to_ushort(b[1], b[0]) : x_endian_to_ushort(b[0], b[1]); | |
| } | |
| 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 { | struct JPG_Segment_head { |
| uchar marker; | uchar marker; |
| uchar code; | uchar code; |
| Line 335 struct JPG_Segment_head { | Line 353 struct JPG_Segment_head { |
| }; | }; |
| /// JPEG frame header | /// JPEG frame header |
| struct JPG_Size_segment_body { | struct JPG_Size_segment_body { |
| char data; //< data precision of bits/sample | char data; //< data precision of bits/sample |
| uchar height[2]; //< image height | uchar height[2]; //< image height |
| uchar width[2]; //< image width | uchar width[2]; //< image width |
| char numComponents; //< number of color components | char numComponents; //< number of color components |
| }; | |
| /// JPEG frame header | |
| struct JPG_Exif_segment_begin { | |
| char signature[6]; // Exif\0\0 | |
| }; | }; |
| /// JPEG Exif TIFF Header | /// JPEG Exif TIFF Header |
| struct JPG_Exif_TIFF_header { | struct JPG_Exif_TIFF_header { |
| uchar byte_align_identifier[2]; | char byte_align_identifier[2]; |
| char dummy[2]; // always 000A [or 0A00] | 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'. | uchar first_IFD_offset[4]; // Usually the first IFD starts immediately next to TIFF header, so this offset has value '0x00000008'. |
| }; | }; |
| Line 372 struct JPG_Exif_IFD_entry { | Line 385 struct JPG_Exif_IFD_entry { |
| #define JPEG_EXIF_DATE_CHARS 20 | #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) { |
| inline ushort x_endian_to_ushort(uchar b0, uchar b1) { | |
| return (ushort)((b1<<8) + b0); | |
| } | |
| inline uint x_endian_to_uint(uchar b0, uchar b1, uchar b2, uchar b3) { | |
| return (uint)(((((b3<<8) + b2)<<8)+b1)<<8)+b0; | |
| } | |
| inline ushort endian_to_ushort(bool is_big, const uchar *b/* [2] */) { | |
| return is_big?x_endian_to_ushort(b[1], b[0]): | |
| x_endian_to_ushort(b[0], b[1]); | |
| } | |
| 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]); | |
| } | |
| 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); | |
| } | |
| static Value* parse_IFD_entry_formatted_one_value( | |
| bool is_big, | |
| ushort format, | |
| size_t component_size, | |
| const uchar *value) { | |
| switch(format) { | switch(format) { |
| case 1: // unsigned byte | case 1: // unsigned byte |
| return new VInt((uchar)value[0]); | return new VInt((uchar)value[0]); |
| Line 461 static Value* parse_IFD_entry_formatted_ | Line 430 static Value* parse_IFD_entry_formatted_ |
| // date.C | // date.C |
| tm cstr_to_time_t(char *, const char **); | tm cstr_to_time_t(char *, const char **); |
| static Value* parse_IFD_entry_formatted_value(bool is_big, ushort format, | static Value* parse_IFD_entry_formatted_value(bool is_big, ushort format, size_t component_size, uint components_count, const uchar *value) { |
| size_t component_size, uint components_count, | |
| const uchar *value) { | |
| if(format==2) { // ascii string, exception: the only type with varying size | if(format==2) { // ascii string, exception: the only type with varying size |
| const char* cstr=(const char* )value; | const char* cstr=(const char* )value; |
| size_t length=components_count; | size_t length=components_count; |
| // Data format is "YYYY:MM:DD HH:MM:SS"+0x00, total 20bytes | // Data format is "YYYY:MM:DD HH:MM:SS"+0x00, total 20bytes |
| if(length==JPEG_EXIF_DATE_CHARS | if(length==JPEG_EXIF_DATE_CHARS && isdigit((unsigned char)cstr[0]) && cstr[length-1]==0) { |
| && isdigit((unsigned char)cstr[0]) | |
| && cstr[length-1]==0) { | |
| char cstr_writable[JPEG_EXIF_DATE_CHARS]; | |
| strcpy(cstr_writable, cstr); | |
| try { | try { |
| tm tmIn=cstr_to_time_t(cstr_writable, 0); | tm tmIn=cstr_to_time_t(pa_strdup(cstr), 0); |
| return new VDate(tmIn); | return new VDate(tmIn); |
| } | } |
| catch(...) { /*ignore bad date times*/ } | catch(...) { /*ignore bad date times*/ } |
| Line 491 static Value* parse_IFD_entry_formatted_ | Line 453 static Value* parse_IFD_entry_formatted_ |
| HashStringValue& hash=result->hash(); | HashStringValue& hash=result->hash(); |
| for(uint i=0; i<components_count; i++, value+=component_size) { | for(uint i=0; i<components_count; i++, value+=component_size) { |
| hash.put( | hash.put( |
| String::Body::Format(i), | pa_uitoa(i), |
| parse_IFD_entry_formatted_one_value(is_big, format, component_size, value)); | parse_IFD_entry_formatted_one_value(is_big, format, component_size, value)); |
| } | } |
| return result; | return result; |
| } | } |
| static Value* parse_IFD_entry_value( | static Value* parse_IFD_entry_value(bool is_big, Measure_reader& reader, uint64_t tiff_base, JPG_Exif_IFD_entry& entry) { |
| bool is_big, Measure_reader& reader, long tiff_base, | |
| JPG_Exif_IFD_entry& entry) { | |
| size_t format2component_size[]={ | size_t format2component_size[]={ |
| 0, // undefined | 0, // undefined |
| 1, // unsigned byte | 1, // unsigned byte |
| Line 535 static Value* parse_IFD_entry_value( | Line 495 static Value* parse_IFD_entry_value( |
| Value* result; | Value* result; |
| if(value_size<=4) | if(value_size<=4) |
| result=parse_IFD_entry_formatted_value( | result=parse_IFD_entry_formatted_value(is_big, format, component_size, components_count, entry.value_or_offset_to_it); |
| is_big, format, | |
| component_size, components_count, | |
| entry.value_or_offset_to_it); | |
| else { | else { |
| long remembered=reader.tell(); | uint64_t remembered=reader.tell(); |
| { | { |
| reader.seek(tiff_base+endian_to_uint(is_big, entry.value_or_offset_to_it), SEEK_SET); | reader.seek(tiff_base+endian_to_uint(is_big, entry.value_or_offset_to_it)); |
| const char* value; | const char* value; |
| if(reader.read(value, value_size)<sizeof(value_size)) | if(reader.read(value, value_size)<value_size) |
| return 0; | return 0; |
| result=parse_IFD_entry_formatted_value( | result=parse_IFD_entry_formatted_value(is_big, format, component_size, components_count, (const uchar*)value); |
| is_big, format, | |
| component_size, components_count, | |
| (const uchar*)value); | |
| } | } |
| reader.seek(remembered, SEEK_SET); | reader.seek(remembered); |
| } | } |
| return result; | return result; |
| } | } |
| static void parse_IFD(HashStringValue& hash, | static void parse_IFD(HashStringValue& hash, bool is_big, Measure_reader& reader, uint64_t tiff_base, bool gps=false); |
| bool is_big, Measure_reader& reader, long tiff_base, bool gps=false); | |
| static void parse_IFD_entry(HashStringValue& hash, | 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) { |
| bool is_big, Measure_reader& reader, long tiff_base, | |
| JPG_Exif_IFD_entry& entry, bool gps=false) { | |
| ushort tag=endian_to_ushort(is_big, entry.tag); | ushort tag=endian_to_ushort(is_big, entry.tag); |
| if(tag==JPG_IFD_TAG_EXIF_OFFSET || tag==JPG_IFD_TAG_EXIF_GPS_OFFSET){ | if(tag==JPG_IFD_TAG_EXIF_OFFSET || tag==JPG_IFD_TAG_EXIF_GPS_OFFSET){ |
| long remembered=reader.tell(); | uint64_t remembered=reader.tell(); |
| { | { |
| reader.seek(tiff_base+endian_to_uint(is_big, entry.value_or_offset_to_it), SEEK_SET); | 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); | parse_IFD(hash, is_big, reader, tiff_base, (tag==JPG_IFD_TAG_EXIF_GPS_OFFSET)?true:gps); |
| } | } |
| reader.seek(remembered, SEEK_SET); | reader.seek(remembered); |
| return; | return; |
| } | } |
| if(Value* value=parse_IFD_entry_value(is_big, reader, tiff_base, entry)) { | if(Value* value=parse_IFD_entry_value(is_big, reader, tiff_base, entry)) { |
| if(const char* name=(gps)?exif_gps_tag_value2name.get(tag):exif_tag_value2name.get(tag)) | if(const char* name=(gps ? EXIF_gps_tag_value2name::instance().get(tag) : EXIF_tag_value2name::instance().get(tag))) |
| hash.put(String::Body(name), value); | hash.put(name, value); |
| else | else |
| hash.put(String::Body::Format(tag), value); | hash.put(pa_uitoa((int)tag), value); |
| } | } |
| } | } |
| static void parse_IFD( | static void parse_IFD(HashStringValue& hash, bool is_big, Measure_reader& reader, uint64_t tiff_base, bool gps) { |
| HashStringValue& hash, | |
| bool is_big, Measure_reader& reader, long tiff_base, bool gps) { | |
| const char* buf; | const char* buf; |
| if(reader.read(buf, sizeof(JPG_Exif_IFD_begin))<sizeof(JPG_Exif_IFD_begin)) | if(reader.read(buf, sizeof(JPG_Exif_IFD_begin))<sizeof(JPG_Exif_IFD_begin)) |
| return; | return; |
| Line 601 static void parse_IFD( | Line 550 static void parse_IFD( |
| // then goes: LLLLLLLL Offset to next IFD [not going there] | // then goes: LLLLLLLL Offset to next IFD [not going there] |
| } | } |
| static Value* parse_exif(Measure_reader& reader, const String& origin_string) { | static Value* parse_exif(Measure_reader& reader) { |
| const char* buf; | const char* buf; |
| if(reader.read(buf, sizeof(JPG_Exif_segment_begin))<sizeof(JPG_Exif_segment_begin)) | |
| throw Exception(IMAGE_FORMAT, | |
| &origin_string, | |
| "not JPEG file - can not fully read Exif segment start"); | |
| JPG_Exif_segment_begin *start=(JPG_Exif_segment_begin *)buf; | |
| if(memcmp(start->signature, "Exif\0\0", 4+2)!=0) //signature invalid? | |
| return 0; // ignore invalid block | |
| uint tiff_base=reader.tell(); | uint64_t tiff_base=reader.tell(); |
| if(reader.read(buf, sizeof(JPG_Exif_TIFF_header))<sizeof(JPG_Exif_TIFF_header)) | if(reader.read(buf, sizeof(JPG_Exif_TIFF_header))<sizeof(JPG_Exif_TIFF_header)) |
| return 0; | return 0; |
| Line 620 static Value* parse_exif(Measure_reader& | Line 561 static Value* parse_exif(Measure_reader& |
| bool is_big=head->byte_align_identifier[0]=='M'; // [M]otorola vs [I]ntel | 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); | uint first_IFD_offset=endian_to_uint(is_big, head->first_IFD_offset); |
| reader.seek(tiff_base+first_IFD_offset, SEEK_SET); | reader.seek(tiff_base+first_IFD_offset); |
| VHash* vhash=new VHash; | VHash* vhash=new VHash; |
| Line 630 static Value* parse_exif(Measure_reader& | Line 571 static Value* parse_exif(Measure_reader& |
| return vhash; | return vhash; |
| } | } |
| static void measure_jpeg(const String& origin_string, | static Value* parse_xmp(Measure_reader& reader, ushort xmp_length, Measure_info &info) { |
| Measure_reader& reader, ushort& width, ushort& height, Value** exif) { | 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 uchar MARKER=0xFF; | const uchar MARKER=0xFF; |
| const uchar CODE_SIZE_A=0xC0; | const uchar CODE_SIZE_A=0xC0; |
| const uchar CODE_SIZE_B=0xC1; | const uchar CODE_SIZE_B=0xC1; |
| const uchar CODE_SIZE_C=0xC2; | const uchar CODE_SIZE_C=0xC2; |
| const uchar CODE_SIZE_D=0xC3; | const uchar CODE_SIZE_D=0xC3; |
| const uchar CODE_EXIF=0xE1; | const uchar CODE_APP1=0xE1; |
| const char* buf; | const char* buf; |
| const size_t prefix_size=2; | const size_t prefix_size=2; |
| if(reader.read(buf, prefix_size)<prefix_size) | if(reader.read(buf, prefix_size)<prefix_size) |
| throw Exception(IMAGE_FORMAT, | throw Exception(IMAGE_FORMAT, &origin_string, "not JPEG file - too small"); |
| &origin_string, | |
| "not JPEG file - too small"); | |
| uchar *signature=(uchar *)buf; | uchar *signature=(uchar *)buf; |
| if(!(signature[0]==0xFF && signature[1]==0xD8)) | if(!(signature[0]==0xFF && signature[1]==0xD8)) |
| throw Exception(IMAGE_FORMAT, | throw Exception(IMAGE_FORMAT, &origin_string, "not JPEG file - wrong signature"); |
| &origin_string, | |
| "not JPEG file - wrong signature"); | |
| while(true) { | while(true) { |
| uint segment_base=reader.tell()+2/*marker,code*/; | uint64_t segment_base=reader.tell()+2/*marker,code*/; |
| if(reader.read(buf, sizeof(JPG_Segment_head))<sizeof(JPG_Segment_head)) | if(reader.read(buf, sizeof(JPG_Segment_head))<sizeof(JPG_Segment_head)) |
| break; | break; |
| JPG_Segment_head *head=(JPG_Segment_head *)buf; | JPG_Segment_head *head=(JPG_Segment_head *)buf; |
| // Verify that it's a valid segment. | // Verify that it's a valid segment. |
| if(head->marker!=MARKER) | if(head->marker!=MARKER) |
| throw Exception(IMAGE_FORMAT, | throw Exception(IMAGE_FORMAT, &origin_string, "not JPEG file - marker not found"); |
| &origin_string, | |
| "not JPEG file - marker not found"); | ushort segment_length=endian_to_ushort(true, head->length); |
| switch(head->code) { | switch(head->code) { |
| // http://park2.wakwak.com/~tsuruzoh/Computer/Digicams/exif-e.html | // http://dev.exiv2.org/projects/exiv2/wiki/The_Metadata_in_JPEG_files |
| case CODE_EXIF: | case CODE_APP1: |
| if(exif && !*exif) // seen .jpg with some xml under EXIF tag, after real exif block :) | { |
| *exif=parse_exif(reader, origin_string); | 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; | |
| if(memcmp(buf, "Exif\0\0", EXIF_SIG_LEN)==0){ | |
| if(info.exif && !*info.exif) // backward compatibility: using first segment | |
| *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 CODE_SIZE_A: | case CODE_SIZE_A: |
| Line 679 static void measure_jpeg(const String& o | Line 644 static void measure_jpeg(const String& o |
| { | { |
| // Segments that contain size info | // Segments that contain size info |
| if(reader.read(buf, sizeof(JPG_Size_segment_body))<sizeof(JPG_Size_segment_body)) | if(reader.read(buf, sizeof(JPG_Size_segment_body))<sizeof(JPG_Size_segment_body)) |
| throw Exception(IMAGE_FORMAT, | throw Exception(IMAGE_FORMAT, &origin_string, "not JPEG file - cannot fully read Size segment"); |
| &origin_string, | |
| "not JPEG file - can not fully read Size segment"); | |
| JPG_Size_segment_body *body=(JPG_Size_segment_body *)buf; | JPG_Size_segment_body *body=(JPG_Size_segment_body *)buf; |
| width=endian_to_ushort(true, body->width); | info.width=endian_to_ushort(true, body->width); |
| height=endian_to_ushort(true, body->height); | info.height=endian_to_ushort(true, body->height); |
| } | } |
| return; | return; |
| }; | }; |
| reader.seek(segment_base+endian_to_ushort(true, head->length), SEEK_SET); | reader.seek(segment_base + segment_length); |
| } | } |
| throw Exception(IMAGE_FORMAT, | throw Exception(IMAGE_FORMAT, &origin_string, "broken JPEG file - size frame not found"); |
| &origin_string, | |
| "broken JPEG file - size frame not found"); | |
| } | } |
| static void measure_png(const String& origin_string, | ///*********************************************** TIFF |
| Measure_reader& reader, ushort& width, ushort& height) { | |
| 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; | |
| } | |
| } | |
| return false; | |
| // then goes: LLLLLLLL Offset to next IFD [not going there] | |
| } | |
| static void measure_tiff(const String& origin_string, Measure_reader& reader, Measure_info &info) { | |
| const char* buf; | |
| 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 char* buf; |
| const size_t head_size=sizeof(PNG_Header); | const size_t head_size=sizeof(PNG_Header); |
| if(reader.read(buf, head_size)<head_size) | if(reader.read(buf, head_size)<head_size) |
| throw Exception(IMAGE_FORMAT, | throw Exception(IMAGE_FORMAT, &origin_string, "not PNG file - too small"); |
| &origin_string, | |
| "not PNG file - too small"); | |
| PNG_Header *head=(PNG_Header *)buf; | PNG_Header *head=(PNG_Header *)buf; |
| if(strncmp(head->signature, "IHDR", 4)!=0) | if(strncmp(head->signature, "IHDR", 4)!=0) |
| throw Exception(IMAGE_FORMAT, | throw Exception(IMAGE_FORMAT, &origin_string, "not PNG file - wrong signature"); |
| &origin_string, | |
| "not PNG file - wrong signature"); | |
| width=endian_to_ushort(true, head->width); | width=endian_to_ushort(true, head->width); |
| height=endian_to_ushort(true, head->height); | height=endian_to_ushort(true, head->height); |
| } | } |
| // measure center | |
| static void measure(const String& file_name, | ///*********************************************** BMP |
| Measure_reader& reader, ushort& width, ushort& height, Value** exif) { | |
| 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 | |
| static void measure(const String& file_name, Measure_reader& reader, Measure_info &info) { | |
| const char* file_name_cstr=file_name.taint_cstr(String::L_FILE_SPEC); | 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(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(file_name, reader, width, height, exif); | measure_jpeg(file_name, reader, info); |
| else if(strcasecmp(cext, "PNG")==0) | else if(strcasecmp(cext, "PNG")==0) |
| measure_png(file_name, reader, width, height); | 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 |
| throw Exception(IMAGE_FORMAT, | throw Exception(IMAGE_FORMAT, &file_name, "unhandled file name extension '%s'", cext); |
| &file_name, | |
| "unhandled image file name extension '%s'", cext); | |
| } else | } else |
| throw Exception(IMAGE_FORMAT, | 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"); | |
| } | } |
| // methods | // methods |
| #ifndef DOXYGEN | static void file_measure_action(struct stat& /*finfo*/, int f, const String& file_spec, void *context) { |
| struct File_measure_action_info { | Measure_file_reader reader(f, file_spec); |
| ushort* width; | measure(file_spec, reader, *static_cast<Measure_info *>(context)); |
| ushort* height; | |
| Value** exif; | |
| const String* file_name; | |
| }; | |
| #endif | |
| static void file_measure_action( | |
| struct stat& /*finfo*/, int f, | |
| const String& /*file_spec*/, const char* fname, bool /*as_text*/, | |
| void *context) { | |
| File_measure_action_info& info=*static_cast<File_measure_action_info *>(context); | |
| Measure_file_reader reader(f, *info.file_name, fname); | |
| measure(*info.file_name, reader, *info.width, *info.height, info.exif); | |
| } | } |
| static void _measure(Request& r, MethodParams& params) { | static void _measure(Request& r, MethodParams& params) { |
| Value& data=params.as_no_junction(0, "data must not be code"); | Value& data=params.as_no_junction(0, "data must not be code"); |
| ushort width=0; | |
| ushort height=0; | |
| Value* exif=0; | 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); | |
| } | |
| const String* file_name; | const String* file_name; |
| if((file_name=data.get_string())) { | |
| File_measure_action_info info={ | if(file_name=data.get_string()) { |
| &width, &height, | file_read_action_under_lock(r.full_disk_path(*file_name), "measure", file_measure_action, &info); |
| &exif, | |
| file_name | |
| }; | |
| file_read_action_under_lock(r.absolute(*file_name), | |
| "measure", file_measure_action, &info); | |
| } else { | } else { |
| VFile* vfile=data.as_vfile(String::L_AS_IS); | VFile* vfile=data.as_vfile(); |
| file_name=&vfile->fields().get(name_name)->as_string(); | file_name=&vfile->fields().get(name_name)->as_string(); |
| Measure_buf_reader reader( | Measure_buf_reader reader(vfile->value_ptr(), vfile->value_size(), *file_name); |
| vfile->value_ptr(), | measure(*file_name, reader, info); |
| vfile->value_size(), | |
| *file_name | |
| ); | |
| measure(*file_name, reader, width, height, &exif); | |
| } | } |
| GET_SELF(r, VImage).set(file_name, width, height, 0, exif); | GET_SELF(r, VImage).set(file_name, info.width, info.height, 0, exif, xmp); |
| } | } |
| #ifndef DOXYGEN | 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()) |
| HashStringValue* skip; ///< tag attributes not to append to tag string [to skip] | |
| }; | |
| #endif | |
| static void append_attrib_pair( | |
| HashStringValue::key_type key, | |
| HashStringValue::value_type value, | |
| Attrib_info* info) { | |
| // skip user-specified, internal(starting with "line-") attributes and border attribute with empty value | |
| if( | |
| (info->skip && info->skip->get(key)) | |
| || key.pos("line-")==0 | |
| || (key=="border" && !value->is_defined()) | |
| ) | |
| return; | return; |
| // src="a.gif" width="123" ismap[=-1] | // src="a.gif" width="123" ismap[=-1] |
| *info->tag << " " << key; | tag << " " << key; |
| if(value->is_string() || value->as_int()>=0) | if(value->is_string() || value->as_int()>=0) |
| *info->tag << "=\"" << value->as_string() << "\""; | tag << "=\"" << value->as_string() << "\""; |
| } | } |
| static void _html(Request& r, MethodParams& params) { | |
| static void _html(Request& r, MethodParams& params) { | |
| String tag; | String tag; |
| tag << "<img"; | tag << "<img"; |
| Line 823 static void _html(Request& r, MethodPara | Line 1055 static void _html(Request& r, MethodPara |
| if(params.count()) { | if(params.count()) { |
| // for backward compatibility: someday was ^html{} | // for backward compatibility: someday was ^html{} |
| Value& vattribs=r.process_to_value(params[0], false/*don't intercept string*/); | Value& vattribs=r.process(params[0]); |
| if(!vattribs.is_string()) { // allow empty | if(!vattribs.is_string()) { // allow empty |
| if((attribs=vattribs.get_hash())) { | if((attribs=vattribs.get_hash())) { |
| Attrib_info info={&tag, 0}; | for(HashStringValue::Iterator i(*attribs); i; i.next() ) |
| attribs->for_each<Attrib_info*>(append_attrib_pair, &info); | append_attrib_pair(tag, i.key(), i.value()); |
| } else | } else |
| throw Exception(PARSER_RUNTIME, | throw Exception(PARSER_RUNTIME, 0, "attributes must be hash"); |
| 0, | |
| "attributes must be hash"); | |
| } | } |
| } | } |
| { | for(HashStringValue::Iterator i(fields); i; i.next() ){ |
| Attrib_info info={&tag, attribs}; | String::Body key=i.key(); |
| fields.for_each<Attrib_info*>(append_attrib_pair, &info); | // skip user-specified attributes |
| if(attribs && attribs->get(key)) | |
| continue; | |
| // allow only html attributes (to exclude exif, line-*) | |
| if(key=="src" || key=="width" || key=="height" || key=="border") | |
| append_attrib_pair(tag, key, i.value()); | |
| } | } |
| tag << " />"; | tag << " />"; |
| r.write_pass_lang(tag); | r.write(tag); |
| } | } |
| /// @test wrap FILE to auto-object | /// @test wrap FILE to auto-object |
| static gdImage* load(Request& r, | static gdImage* load(Request& r, const String& file_name){ |
| const String& file_name){ | const char* file_name_cstr=r.full_disk_path(file_name).taint_cstr(String::L_FILE_SPEC); |
| const char* file_name_cstr=r.absolute(file_name).taint_cstr(String::L_FILE_SPEC); | if(FILE *f=pa_fopen(file_name_cstr, "rb")) { |
| if(FILE *f=fopen(file_name_cstr, "rb")) { | |
| gdImage* image=new gdImage; | gdImage* image=new gdImage; |
| bool ok=image->CreateFromGif(f); | bool ok=image->CreateFromGif(f); |
| fclose(f); | fclose(f); |
| if(!ok) | if(!ok) |
| throw Exception(IMAGE_FORMAT, | throw Exception(IMAGE_FORMAT, &file_name, "is not in GIF format"); |
| &file_name, | |
| "is not in GIF format"); | |
| return image; | return image; |
| } else { | } else { |
| throw Exception("file.missing", | throw Exception("file.missing", 0, "cannot open '%s'", file_name_cstr); |
| 0, | |
| "can not open '%s'", file_name_cstr); | |
| } | } |
| } | } |
| Line 894 static void _gif(Request& r, MethodParam | Line 1125 static void _gif(Request& r, MethodParam |
| vfile.set_binary(false/*not tainted*/, (const char *)buf.ptr, buf.size, file_name, new VString(*new String("image/gif"))); | vfile.set_binary(false/*not tainted*/, (const char *)buf.ptr, buf.size, file_name, new VString(*new String("image/gif"))); |
| r.write_no_lang(vfile); | r.write(vfile); |
| } | } |
| static void _line(Request& r, MethodParams& params) { | static void _line(Request& r, MethodParams& params) { |
| Line 940 static void _bar(Request& r, MethodParam | Line 1171 static void _bar(Request& r, MethodParam |
| } | } |
| #ifndef DOXYGEN | #ifndef DOXYGEN |
| static void add_point(Table::element_type row, | static void add_point(Table::element_type row, gdImage::Point **p) { |
| gdImage::Point **p) { | |
| if(row->count()!=2) | if(row->count()!=2) |
| throw Exception(0, | throw Exception(0, 0, "coordinates table must contain two columns: x and y values"); |
| 0, | |
| "coordinates table must contain two columns: x and y values"); | |
| (**p).x=row->get(0)->as_int(); | (**p).x=row->get(0)->as_int(); |
| (**p).y=row->get(1)->as_int(); | (**p).y=row->get(1)->as_int(); |
| (*p)++; | (*p)++; |
| } | } |
| #endif | #endif |
| #ifndef DOXYGEN | #ifndef DOXYGEN |
| static void add_point(int x, int y, | static void add_point(int x, int y, gdImage::Point **p) { |
| gdImage::Point **p) { | |
| (**p).x=x; | (**p).x=x; |
| (**p).y=y; | (**p).y=y; |
| (*p)++; | (*p)++; |
| Line 968 static void _replace(Request& r, MethodP | Line 1195 static void _replace(Request& r, MethodP |
| gdImage::Point* all_p=0; | gdImage::Point* all_p=0; |
| size_t count=0; | size_t count=0; |
| if(params.count() == 3){ | if(params.count() == 3){ |
| Table* table=params.as_table(2, "coordinates"); | if(Table* table=params.as_table(2, "coordinates")){ |
| count=table->count(); | count=table->count(); |
| all_p=new(PointerFreeGC) gdImage::Point[count]; | all_p=new(PointerFreeGC) gdImage::Point[count]; |
| gdImage::Point* add_p=all_p; | gdImage::Point* add_p=all_p; |
| table->for_each(add_point, &add_p); | table->for_each(add_point, &add_p); |
| } | |
| } else { | } else { |
| int max_x=image.SX()-1; | int max_x=image.SX()-1; |
| int max_y=image.SY()-1; | int max_y=image.SY()-1; |
| Line 994 static void _replace(Request& r, MethodP | Line 1222 static void _replace(Request& r, MethodP |
| static void _polyline(Request& r, MethodParams& params) { | static void _polyline(Request& r, MethodParams& params) { |
| gdImage& image=GET_SELF(r, VImage).image(); | gdImage& image=GET_SELF(r, VImage).image(); |
| Table* table=params.as_table(1, "coordinates"); | if(Table* table=params.as_table(1, "coordinates")){ |
| gdImage::Point* all_p=new(PointerFreeGC) gdImage::Point[table->count()]; | |
| gdImage::Point* all_p=new(PointerFreeGC) gdImage::Point[table->count()]; | gdImage::Point *add_p=all_p; |
| gdImage::Point *add_p=all_p; | table->for_each(add_point, &add_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*/); |
| image.Polygon(all_p, table->count(), | } |
| image.Color(params.as_int(0, "color must be int", r)), | |
| false/*not closed*/); | |
| } | } |
| static void _polygon(Request& r, MethodParams& params) { | static void _polygon(Request& r, MethodParams& params) { |
| gdImage& image=GET_SELF(r, VImage).image(); | gdImage& image=GET_SELF(r, VImage).image(); |
| Table* table=(Table*)params.as_table(1, "coordinates"); | if(Table* table=(Table*)params.as_table(1, "coordinates")){ |
| gdImage::Point* all_p=new(PointerFreeGC) gdImage::Point[table->count()]; | |
| gdImage::Point* all_p=new(PointerFreeGC) gdImage::Point[table->count()]; | gdImage::Point *add_p=all_p; |
| gdImage::Point *add_p=all_p; | table->for_each(add_point, &add_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))); |
| image.Polygon(all_p, table->count(), | } |
| image.Color(params.as_int(0, "color must be int", r))); | |
| } | } |
| static void _polybar(Request& r, MethodParams& params) { | static void _polybar(Request& r, MethodParams& params) { |
| gdImage& image=GET_SELF(r, VImage).image(); | gdImage& image=GET_SELF(r, VImage).image(); |
| Table* table=(Table*)params.as_table(1, "coordinates"); | if(Table* table=(Table*)params.as_table(1, "coordinates")){ |
| gdImage::Point* all_p=new(PointerFreeGC) gdImage::Point[table->count()]; | |
| gdImage::Point* all_p=new(PointerFreeGC) gdImage::Point[table->count()]; | gdImage::Point *add_p=all_p; |
| gdImage::Point *add_p=all_p; | table->for_each(add_point, &add_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))); |
| image.FilledPolygon(all_p, table->count(), | } |
| image.Color(params.as_int(0, "color must be int", r))); | |
| } | } |
| // font | // font |
| Line 1034 static void _polybar(Request& r, MethodP | Line 1258 static void _polybar(Request& r, MethodP |
| // Font class | // Font class |
| Font::Font( | Font::Font(Charset& asource_charset, const String& aalphabet, gdImage* aifont, int aheight, int amonospace, int aspacebarspace, int aletterspacing): |
| Charset& asource_charset, | letterspacing(aletterspacing), |
| const String& aalphabet, | |
| gdImage* aifont, int aheight, int amonospace, int aspacebarspace, int aletterspacing): | |
| fsource_charset(asource_charset), | |
| height(aheight), | height(aheight), |
| monospace(amonospace), | monospace(amonospace), |
| spacebarspace(aspacebarspace), | spacebarspace(aspacebarspace), |
| letterspacing(aletterspacing), | |
| ifont(aifont), | ifont(aifont), |
| alphabet(aalphabet) { | alphabet(aalphabet), |
| fsource_charset(asource_charset){ | |
| if(fsource_charset.isUTF8()){ | if(fsource_charset.isUTF8()){ |
| size_t index=0; | size_t index=0; |
| Line 1129 static void _font(Request& r, MethodPara | Line 1350 static void _font(Request& r, MethodPara |
| const String& alphabet=params.as_string(0, "alphabet must not be code"); | const String& alphabet=params.as_string(0, "alphabet must not be code"); |
| size_t alphabet_length=alphabet.length(r.charsets.source()); | size_t alphabet_length=alphabet.length(r.charsets.source()); |
| if(!alphabet_length) | if(!alphabet_length) |
| throw Exception(PARSER_RUNTIME, | throw Exception(PARSER_RUNTIME, 0, "alphabet must not be empty"); |
| 0, | |
| "alphabet must not be empty"); | |
| gdImage* image=load(r, params.as_string(1, FILE_NAME_MUST_NOT_BE_CODE)); | gdImage* image=load(r, params.as_string(1, FILE_NAME_MUST_NOT_BE_CODE)); |
| Line 1146 static void _font(Request& r, MethodPara | Line 1365 static void _font(Request& r, MethodPara |
| int valid_options=0; | int valid_options=0; |
| if(Value* vspacebar_width=options->get(spacebar_width_name)){ | if(Value* vspacebar_width=options->get(spacebar_width_name)){ |
| valid_options++; | valid_options++; |
| spacebar_width=r.process_to_value(*vspacebar_width).as_int(); | spacebar_width=r.process(*vspacebar_width).as_int(); |
| } | } |
| if(Value* vmonospace_width=options->get(monospace_width_name)){ | if(Value* vmonospace_width=options->get(monospace_width_name)){ |
| valid_options++; | valid_options++; |
| monospace_width=r.process_to_value(*vmonospace_width).as_int(); | monospace_width=r.process(*vmonospace_width).as_int(); |
| if(!monospace_width) | if(!monospace_width) |
| monospace_width=image->SX(); | monospace_width=image->SX(); |
| } | } |
| if(Value* vletter_spacing=options->get(letter_spacing_name)){ | if(Value* vletter_spacing=options->get(letter_spacing_name)){ |
| valid_options++; | valid_options++; |
| letter_spacing=r.process_to_value(*vletter_spacing).as_int(); | letter_spacing=r.process(*vletter_spacing).as_int(); |
| } | } |
| if(valid_options!=options->count()) | if(valid_options!=options->count()) |
| throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION); | throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION); |
| Line 1172 static void _font(Request& r, MethodPara | Line 1391 static void _font(Request& r, MethodPara |
| } | } |
| if(int remainder=image->SY() % alphabet_length) | if(int remainder=image->SY() % alphabet_length) |
| throw Exception(PARSER_RUNTIME, | throw Exception(PARSER_RUNTIME, 0, "font-file height(%d) not divisable by alphabet size(%d), remainder=%d", image->SY(), alphabet_length, remainder); |
| 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( | GET_SELF(r, VImage).set_font(new Font(r.charsets.source(), alphabet, image, image->SY() / alphabet_length, monospace_width, spacebar_width, letter_spacing)); |
| r.charsets.source(), | |
| alphabet, | |
| image, | |
| image->SY() / alphabet_length, monospace_width, spacebar_width, letter_spacing)); | |
| } | } |
| static void _text(Request& r, MethodParams& params) { | static void _text(Request& r, MethodParams& params) { |
| Line 1197 static void _length(Request& r, MethodPa | Line 1409 static void _length(Request& r, MethodPa |
| const String& s=params.as_string(0, "text must not be code"); | const String& s=params.as_string(0, "text must not be code"); |
| VImage& vimage=GET_SELF(r, VImage); | VImage& vimage=GET_SELF(r, VImage); |
| r.write_no_lang(*new VInt(vimage.font().string_width(s))); | r.write(*new VInt(vimage.font().string_width(s))); |
| } | } |
| static void _arc(Request& r, MethodParams& params) { | static void _arc(Request& r, MethodParams& params) { |
| Line 1243 static void _circle(Request& r, MethodPa | Line 1455 static void _circle(Request& r, MethodPa |
| gdImage& as_image(MethodParams& params, int index, const char* msg) { | gdImage& as_image(MethodParams& params, int index, const char* msg) { |
| Value& value=params.as_no_junction(index, msg); | Value& value=params.as_no_junction(index, msg); |
| if(Value* vimage=value.as(VIMAGE_TYPE)) { | if(VImage* vimage=dynamic_cast<VImage *>(&value)) { |
| return static_cast<VImage *>(vimage)->image(); | return vimage->image(); |
| } else | } else |
| throw Exception(PARSER_RUNTIME, | throw Exception(PARSER_RUNTIME, 0, msg); |
| 0, | |
| msg); | |
| } | } |
| static void _copy(Request& r, MethodParams& params) { | static void _copy(Request& r, MethodParams& params) { |
| Line 1284 static void _pixel(Request& r, MethodPar | Line 1494 static void _pixel(Request& r, MethodPar |
| image.SetPixel(x, y, | image.SetPixel(x, y, |
| image.Color(params.as_int(2, "color must be int", r))); | image.Color(params.as_int(2, "color must be int", r))); |
| } else | } else |
| r.write_no_lang(*new VInt(image.DecodeColor(image.GetPixel(x, y)))); | r.write(*new VInt(image.DecodeColor(image.GetPixel(x, y)))); |
| } | } |
| Line 1292 static void _pixel(Request& r, MethodPar | Line 1502 static void _pixel(Request& r, MethodPar |
| MImage::MImage(): Methoded("image") { | 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] |