forked from minhngoc25a/freetype2
[gf] FT stream support for gf driver.
* src/gf/gflib.c : Convert all the file functions to FT stream functions.
This commit is contained in:
Parth Wazurkar
parent
c80039d715
commit
f7f6a981c4
275
src/gf/gflib.c
275
src/gf/gflib.c
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@ -21,6 +21,10 @@
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#include FT_INTERNAL_DEBUG_H
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#include FT_INTERNAL_STREAM_H
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#include FT_INTERNAL_OBJECTS_H
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#include FT_SYSTEM_H
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#include FT_CONFIG_CONFIG_H
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#include FT_ERRORS_H
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#include FT_TYPES_H
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#include "gf.h"
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#include "gfdrivr.h"
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@ -36,6 +40,8 @@
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#undef FT_COMPONENT
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#define FT_COMPONENT trace_gflib
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unsigned char bit_table[] = {
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0x80, 0x40, 0x20, 0x10, 0x08, 0x04, 0x02, 0x01 };
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/**************************************************************************
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*
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@ -43,105 +49,57 @@
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*
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*/
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long gf_read_intn(FILE*,int);
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unsigned long gf_read_uintn(FILE*,int);
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void gf_skip_n(FILE*,int);
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#define READ_INT1(fp) (INT1)gf_read_intn((fp), 1)
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#define READ_UINT1(fp) (UINT1)gf_read_uintn((fp), 1)
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#define READ_INT2(fp) (INT2)gf_read_intn((fp), 2)
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#define READ_UINT2(fp) (UINT2)gf_read_uintn((fp), 2)
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#define READ_INT3(fp) (INT3)gf_read_intn((fp), 3)
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#define READ_UINT3(fp) (UINT3)gf_read_uintn((fp), 3)
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#define READ_INT4(fp) (INT4)gf_read_intn((fp), 4)
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#define READ_UINT4(fp) (UINT4)gf_read_uintn((fp), 4)
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#define READ_INTN(fp,n) (INT4)gf_read_intn((fp), (n))
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#define READ_UINTN(fp,n) (UINT4)gf_read_uintn((fp), (n))
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#define SKIP_N(fp,k) gf_skip_n((fp), (k))
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long gf_read_intn(FT_Stream,int);
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unsigned long gf_read_uintn(FT_Stream,int);
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#define READ_UINT1( stream ) (UINT1)gf_read_uintn( stream, 1)
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#define READ_UINTN( stream,n) (UINT4)gf_read_uintn( stream, n)
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#define READ_INT1( stream ) (INT1)gf_read_intn( stream, 1)
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#define READ_INT4( stream ) (INT4)gf_read_intn( stream, 4)
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/*
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* Reading a Number from file
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*/
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unsigned long
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gf_read_uintn(FILE* fp, int size)
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gf_read_uintn(FT_Stream stream, int size)
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{
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unsigned long v;
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unsigned long v,k;
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FT_Error error = FT_Err_Ok;
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FT_Byte tp;
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v = 0L;
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while (size >= 1)
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{
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v = v*256L + (unsigned long)getc(fp);
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FT_READ_BYTE(tp);
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k =(unsigned long)tp;
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v = v*256L + k;
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--size;
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}
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return v;
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}
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long
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gf_read_intn(FILE* fp, int size)
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gf_read_intn(FT_Stream stream, int size)
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{
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long v;
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v = (long)getc(fp) & 0xffL;
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FT_Byte tp;
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FT_Error error= FT_Err_Ok;
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unsigned long z ;
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FT_READ_BYTE(tp);
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z= (unsigned long)tp;
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v = (long)z & 0xffL;
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if (v & 0x80L)
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v = v - 256L;
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--size;
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while (size >= 1)
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{
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v = v*256L + (unsigned long)getc(fp);
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FT_READ_BYTE(tp);
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z= (unsigned long)tp;
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v = v*256L + z;
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--size;
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}
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return v;
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}
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void
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gf_skip_n(FILE* fp, int size)
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{
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while (size > 0)
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{
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(void)getc(fp);
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--size;
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}
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}
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unsigned long
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gf_get_uintn(unsigned char *p, int size)
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{
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unsigned long v;
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v = 0L;
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while (size >= 1)
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{
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v = v*256L + (unsigned long) *(p++);
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--size;
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}
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return v;
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}
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long
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gf_get_intn(unsigned char *p, int size)
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{
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long v;
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v = (long)*(p++) & 0xffL;
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if (v & 0x80L)
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v = v - 256L;
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--size;
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while (size >= 1)
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{
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v = v*256L + (unsigned long) *(p++);
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--size;
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}
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return v;
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}
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/**************************************************************************
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*
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* API.
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@ -149,7 +107,7 @@
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*/
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FT_LOCAL_DEF( FT_Error )
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gf_read_glyph(FT_FILE* fp, GF_BITMAP bm)
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gf_read_glyph(FT_Stream stream, GF_Bitmap bm)
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{
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long m, n;
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int paint_sw;
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@ -158,30 +116,33 @@
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long w, h, d;
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int m_b, k;
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unsigned char *ptr;
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FT_Error error = FT_Err_Ok;
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FT_Face face = FT_FACE_STREAM( stream );
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FT_Memory memory = FT_FACE_MEMORY( face );
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switch (READ_UINT1(fp))
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switch (READ_UINT1( stream ))
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{
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case GF_BOC:
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SKIP_N(fp, 4);
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SKIP_N(fp, 4);
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min_m = READ_INT4(fp);
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max_m = READ_INT4(fp);
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min_n = READ_INT4(fp);
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max_n = READ_INT4(fp);
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FT_STREAM_SKIP( 4 );
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FT_STREAM_SKIP( 4 );
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min_m = READ_INT4( stream );
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max_m = READ_INT4( stream );
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min_n = READ_INT4( stream );
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max_n = READ_INT4( stream );
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break;
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case GF_BOC1:
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SKIP_N(fp, 1);
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del_m = (INT4)READ_UINT1(fp);
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max_m = (INT4)READ_UINT1(fp);
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del_n = (INT4)READ_UINT1(fp);
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max_n = (INT4)READ_UINT1(fp);
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FT_STREAM_SKIP( 1 );
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del_m = (INT4)READ_UINT1( stream );
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max_m = (INT4)READ_UINT1( stream );
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del_n = (INT4)READ_UINT1( stream );
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max_n = (INT4)READ_UINT1( stream );
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min_m = max_m - del_m;
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min_n = max_n - del_n;
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break;
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default:
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goto Exit;
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goto Fail;
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}
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w = max_m - min_m + 1;
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@ -189,16 +150,16 @@
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if ((w < 0) || (h < 0))
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{
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error = FT_THROW( Invalid_File_Format );
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goto Exit;
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goto Fail;
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}
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if ((bm->bitmap = (unsigned char*)malloc(h*((w+7)/8))) == NULL)
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{
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error = FT_THROW( Invalid_File_Format );
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goto Exit;
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goto Fail;
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}
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memclr(bm->bitmap, h*((w+7)/8));
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memset(bm->bitmap, 0, h*((w+7)/8));
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bm->raster = (w+7)/8;
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bm->bbx_width = w;
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bm->bbx_height = h;
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@ -212,7 +173,7 @@
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m = min_m;
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n = max_n;
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paint_sw = 0;
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while ((instr = (int)READ_UINT1(fp)) != GF_EOC)
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while ((instr = (int)READ_UINT1( stream )) != GF_EOC)
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{
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if (instr == GF_PAINT_0)
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{
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@ -236,7 +197,7 @@
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case GF_PAINT1:
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case GF_PAINT2:
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case GF_PAINT3:
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d = (UINT4)READ_UINTN(fp, (instr - GF_PAINT1 + 1));
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d = (UINT4)READ_UINTN( stream, (instr - GF_PAINT1 + 1));
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Paint:
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if (paint_sw == 0)
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@ -272,7 +233,7 @@
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case GF_SKIP2:
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case GF_SKIP3:
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m = min_m;
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n = n - (UINT4)READ_UINTN(fp, (instr - GF_SKIP1 + 1)) - 1;
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n = n - (UINT4)READ_UINTN( stream, (instr - GF_SKIP1 + 1)) - 1;
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paint_sw = 0;
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break;
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@ -280,12 +241,12 @@
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case GF_XXX2:
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case GF_XXX3:
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case GF_XXX4:
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k = READ_UINTN(fp, instr - GF_XXX1 + 1);
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SKIP_N(fp, k);
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k = READ_UINTN( stream, instr - GF_XXX1 + 1);
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FT_STREAM_SKIP( k );
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break;
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case GF_YYY:
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SKIP_N(fp, 4);
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FT_STREAM_SKIP( 4 );
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break;
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case GF_NO_OP:
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@ -300,6 +261,9 @@
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}
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}
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Fail:
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return -1;
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Exit:
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return error;
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}
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@ -307,10 +271,11 @@
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FT_LOCAL_DEF( FT_Error )
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gf_load_font( FT_Stream stream,
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GF_Face face )
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FT_Memory extmemory,
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GF_Glyph *goptr )
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{
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GF_GLYPH go;
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GF_BITMAP bm;
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GF_Glyph go;
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GF_Bitmap bm;
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UINT1 instr, d;
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UINT4 ds, check_sum, hppp, vppp;
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INT4 min_m, max_m, min_n, max_n;
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@ -319,18 +284,24 @@
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double dx, dy;
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long ptr_post, ptr_p, ptr, optr, gptr;
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int bc, ec, nchars, i;
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FT_Error error = FT_Err_Ok;
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FT_FILE *fp = stream->descriptor.pointer
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FT_Error error = FT_Err_Ok, error1;
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FT_Memory memory = extmemory; /* needed for FT_NEW */
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FT_ULong offset;
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FT_Byte tp;
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go = NULL;
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nchars = -1;
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/* seek to post_post instr. */
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ft_fseek(fp, -1, SEEK_END);
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/* fseek(fp, -1, SEEK_END); */
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FT_STREAM_SEEK( stream->size - 1 );
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while ((d = READ_UINT1(fp)) == 223)
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fseek(fp, -2, SEEK_CUR);
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while ( d= READ_UINT1( stream ) == 223)
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FT_STREAM_SEEK( stream->pos -2 );
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/* fseek(fp, -2, SEEK_CUR); */
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FT_STREAM_SEEK( stream->pos -1 );
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d= READ_UINT1( stream );
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if (d != GF_ID)
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{
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@ -338,42 +309,46 @@
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goto ErrExit;
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}
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fseek(fp, -6, SEEK_CUR);
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/* fseek(fp, -6, SEEK_CUR); */
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FT_STREAM_SEEK( stream->pos -6 );
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/* check if the code is post_post */
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if (READ_UINT1(fp) != GF_POST_POST)
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if (READ_UINT1( stream ) != GF_POST_POST)
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{
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error = FT_THROW( Invalid_File_Format );
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goto ErrExit;
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}
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/* read pointer to post instr. */
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if ((ptr_post = READ_UINT4(fp)) == -1)
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FT_READ_ULONG( ptr_post );
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if (ptr_post == -1)
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{
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error = FT_THROW( Invalid_File_Format );
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goto ErrExit;
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}
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/* goto post instr. and read it */
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fseek(fp, ptr_post, SEEK_SET);
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if (READ_UINT1(fp) != GF_POST)
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/* fseek(fp, ptr_post, SEEK_SET); */
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FT_STREAM_SEEK( ptr_post );
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if (READ_UINT1( stream ) != GF_POST)
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{
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error = FT_THROW( Invalid_File_Format );
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goto ErrExit;
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}
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ptr_p = READ_UINT4(fp);
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ds = READ_UINT4(fp);
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check_sum = READ_UINT4(fp);
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hppp = READ_UINT4(fp);
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vppp = READ_UINT4(fp);
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min_m = READ_INT4(fp);
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max_m = READ_INT4(fp);
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min_n = READ_INT4(fp);
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max_n = READ_INT4(fp);
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FT_READ_ULONG( ptr_p ) ;
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FT_READ_ULONG( ds ) ;
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FT_READ_ULONG( check_sum );
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FT_READ_ULONG( hppp ) ;
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FT_READ_ULONG( vppp ) ;
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min_m = READ_INT4( stream );
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max_m = READ_INT4( stream );
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min_n = READ_INT4( stream );
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max_n = READ_INT4( stream );
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#if 0
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gptr = ftell(fp);
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#endif
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#if 0
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/* read min & max char code */
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@ -412,10 +387,12 @@
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#endif
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nchars = ec - bc + 1;
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FT_ALLOC(go, GF_GlyphRec)
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/*go= malloc(sizeof(GF_GlyphRec));*/
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if( FT_ALLOC(go, sizeof(GF_GlyphRec)) )
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goto ErrExit;
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FT_ALLOC_MULT(go->bm_table, GF_BitmapRec, nchars)
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/*go->bm_table = (GF_Bitmap)malloc(nchars* sizeof(GF_BitmapRec));*/
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if( FT_ALLOC_MULT(go->bm_table, sizeof(GF_BitmapRec), nchars) )
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goto ErrExit;
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for (i = 0; i < nchars; i++)
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@ -438,45 +415,46 @@
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for ( ; ; )
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{
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if ((instr = READ_UINT1(fp)) == GF_POST_POST)
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if ((instr = READ_UINT1( stream )) == GF_POST_POST)
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break;
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switch ((int)instr)
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{
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case GF_CHAR_LOC:
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code = READ_UINT1(fp);
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dx = (double)READ_INT4(fp)/(double)(1<<16);
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dy = (double)READ_INT4(fp)/(double)(1<<16);
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w = READ_INT4(fp);
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ptr = READ_INT4(fp);
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break;
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case GF_CHAR_LOC0:
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code = READ_UINT1(fp);
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dx = (double)READ_INT1(fp);
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dy = (double)0;
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w = READ_INT4(fp);
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ptr = READ_INT4(fp);
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break;
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default:
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error = FT_THROW( Invalid_File_Format );
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goto ErrExit;
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case GF_CHAR_LOC:
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code = READ_UINT1( stream );
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dx = (double)READ_INT4( stream )/(double)(1<<16);
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dy = (double)READ_INT4( stream )/(double)(1<<16);
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w = READ_INT4( stream );
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ptr = READ_INT4( stream );
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break;
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case GF_CHAR_LOC0:
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code = READ_UINT1( stream );
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dx = (double)READ_INT1( stream );
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dy = (double)0;
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w = READ_INT4( stream );
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ptr = READ_INT4( stream );
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break;
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default:
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error = FT_THROW( Invalid_File_Format );
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goto ErrExit;
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}
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optr = ft_ftell(fp);
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ft_fseek(fp, ptr, SEEK_SET);
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/* optr = ft_ftell(fp); */
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optr = stream->pos;
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/* ft_fseek(fp, ptr, SEEK_SET); */
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FT_STREAM_SEEK( ptr );
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bm = &go->bm_table[code - bc];
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if (gf_read_glyph(fp, bm) < 0)
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if (gf_read_glyph( stream, bm ) < 0)
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goto ErrExit;
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bm->mv_x = dx;
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bm->mv_y = dy;
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ft_fseek(fp, optr, SEEK_SET);
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/* ft_fseek(fp, optr, SEEK_SET); */
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FT_STREAM_SEEK( optr );
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}
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return go;
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*goptr = go;
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return error;
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ErrExit:
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printf("*ERROR\n");
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@ -495,8 +473,9 @@
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FT_LOCAL_DEF( void )
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gf_free_font( GF_Glyph gf_glyph )
|
||||
gf_free_font( GF_Glyph go, FT_Memory memory )
|
||||
{
|
||||
int i=0, nchars =sizeof(go->bm_table);
|
||||
if (go != NULL)
|
||||
{
|
||||
if (go->bm_table != NULL)
|
||||
|
|
|
|||
Loading…
Reference in New Issue