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remove IFF_file global variable

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This commit is contained in:
Thomas Bernard 2018-02-02 11:38:22 +01:00
parent 5934e0d7fd
commit c5ea5d3a46
1 changed files with 36 additions and 36 deletions
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72
src/fileformats.c
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@ -244,12 +244,11 @@ typedef struct
word Y_screen;
} T_IFF_Header;
FILE *IFF_file;
// -- Tester si un fichier est au format IFF --------------------------------
void Test_IFF(T_IO_Context * context, const char *sub_type)
{
FILE * IFF_file;
char filename[MAX_PATH_CHARACTERS];
char format[4];
char section[4];
@ -317,7 +316,6 @@ void Test_IFF(T_IO_Context * context, const char *sub_type)
} while (0);
fclose(IFF_file);
IFF_file = NULL;
}
}
@ -445,32 +443,32 @@ void Test_LBM(T_IO_Context * context)
/// Skips the current section in an IFF file.
/// This function should be called while the file pointer is right
/// after the 4-character code that identifies the section.
int IFF_Skip_section(void)
int IFF_Skip_section(FILE * file)
{
dword size;
if (!Read_dword_be(IFF_file,&size))
if (!Read_dword_be(file,&size))
return 0;
if (size&1)
size++;
if (fseek(IFF_file,size,SEEK_CUR))
if (fseek(file,size,SEEK_CUR))
return 0;
return 1;
}
// ------------------------- Attendre une section -------------------------
byte IFF_Wait_for(const char * expected_section)
byte IFF_Wait_for(FILE * file, const char * expected_section)
{
// Valeur retournée: 1=Section trouvée, 0=Section non trouvée (erreur)
byte section_read[4];
if (! Read_bytes(IFF_file,section_read,4))
if (! Read_bytes(file,section_read,4))
return 0;
while (memcmp(section_read,expected_section,4)) // Sect. pas encore trouvée
{
if (!IFF_Skip_section())
if (!IFF_Skip_section(file))
return 0;
if (! Read_bytes(IFF_file,section_read,4))
if (! Read_bytes(file,section_read,4))
return 0;
}
return 1;
@ -592,7 +590,7 @@ void Set_IFF_color(byte * buffer, word x_pos, byte color, word real_line_size, b
}
}
static void PBM_Decode(T_IO_Context * context, byte compression, word width, word height)
static void PBM_Decode(T_IO_Context * context, FILE * file, byte compression, word width, word height)
{
byte * line_buffer;
word x_pos, y_pos;
@ -604,7 +602,7 @@ static void PBM_Decode(T_IO_Context * context, byte compression, word width, wor
line_buffer=(byte *)malloc(real_line_size);
for (y_pos=0; ((y_pos<height) && (!File_error)); y_pos++)
{
if (Read_bytes(IFF_file,line_buffer,real_line_size))
if (Read_bytes(file,line_buffer,real_line_size))
for (x_pos=0; x_pos<width; x_pos++)
Set_pixel(context, x_pos,y_pos,line_buffer[x_pos]);
else
@ -618,14 +616,14 @@ static void PBM_Decode(T_IO_Context * context, byte compression, word width, wor
for (x_pos=0; ((x_pos<real_line_size) && (!File_error)); )
{
byte temp_byte, color;
if(Read_byte(IFF_file, &temp_byte)!=1)
if(Read_byte(file, &temp_byte)!=1)
{
File_error=27;
break;
}
if (temp_byte>127)
{
if(Read_byte(IFF_file, &color)!=1)
if(Read_byte(file, &color)!=1)
{
File_error=28;
break;
@ -638,7 +636,7 @@ static void PBM_Decode(T_IO_Context * context, byte compression, word width, wor
else
do
{
if(Read_byte(IFF_file, &color)!=1)
if(Read_byte(file, &color)!=1)
{
File_error=29;
break;
@ -657,6 +655,7 @@ static void PBM_Decode(T_IO_Context * context, byte compression, word width, wor
void Load_IFF(T_IO_Context * context)
{
FILE * IFF_file;
char filename[MAX_PATH_CHARACTERS];
T_IFF_Header header;
char format[4];
@ -703,7 +702,7 @@ void Load_IFF(T_IO_Context * context)
else if(memcmp(format,"DPST",4)==0)
{
// TODO : read DPAH
if (!IFF_Wait_for("FORM"))
if (!IFF_Wait_for(IFF_file, "FORM"))
File_error=1;
Read_dword_be(IFF_file,&dummy);
Read_bytes(IFF_file,format,4);
@ -720,7 +719,7 @@ void Load_IFF(T_IO_Context * context)
File_error=1;
}
if (!IFF_Wait_for("BMHD"))
if (!IFF_Wait_for(IFF_file, "BMHD"))
File_error=1;
Read_dword_be(IFF_file,&dummy); // SIZE
@ -856,7 +855,7 @@ printf("%d x %d = %d %d\n", tiny_width, tiny_height, tiny_width*tiny_height, s
if ((context->Type == CONTEXT_PREVIEW || context->Type == CONTEXT_PREVIEW_PALETTE) && iff_format == FORMAT_PBM)
{
Pre_load(context, tiny_width, tiny_height,file_size,iff_format,ratio,0);
PBM_Decode(context, header.Compression, tiny_width, tiny_height);
PBM_Decode(context, IFF_file, header.Compression, tiny_width, tiny_height);
fclose(IFF_file);
IFF_file = NULL;
return;
@ -952,7 +951,7 @@ printf("%d x %d = %d %d\n", tiny_width, tiny_height, tiny_width*tiny_height, s
word count;
y_pos = 0; x_pos = 0;
if (!IFF_Wait_for("VDAT"))
if (!IFF_Wait_for(IFF_file, "VDAT"))
{
if (plane == 0) // don't cancel loading if at least 1 bitplane has been loaded
File_error = 30;
@ -1039,7 +1038,7 @@ printf("%d x %d = %d %d\n", tiny_width, tiny_height, tiny_width*tiny_height, s
}
else // "PBM ": Planar(?) BitMap
{
PBM_Decode(context, header.Compression, context->Width, context->Height);
PBM_Decode(context, IFF_file, header.Compression, context->Width, context->Height);
}
}
else
@ -1066,7 +1065,7 @@ printf("%d x %d = %d %d\n", tiny_width, tiny_height, tiny_width*tiny_height, s
// ILBM, hopefully
Read_bytes(IFF_file,format,4);
if (!IFF_Wait_for("DLTA"))
if (!IFF_Wait_for(IFF_file, "DLTA"))
{
File_error=1;
break;
@ -1096,7 +1095,7 @@ printf("%d x %d = %d %d\n", tiny_width, tiny_height, tiny_width*tiny_height, s
byte IFF_repetition_mode;
// ------------- Ecrire les couleurs que l'on vient de traiter ------------
void Transfer_colors(void)
void Transfer_colors(FILE * file)
{
byte index;
@ -1104,14 +1103,14 @@ printf("%d x %d = %d %d\n", tiny_width, tiny_height, tiny_width*tiny_height, s
{
if (IFF_repetition_mode)
{
Write_one_byte(IFF_file,257-IFF_list_size);
Write_one_byte(IFF_file,IFF_color_list[0]);
Write_one_byte(file,257-IFF_list_size);
Write_one_byte(file,IFF_color_list[0]);
}
else
{
Write_one_byte(IFF_file,IFF_list_size-1);
Write_one_byte(file,IFF_list_size-1);
for (index=0; index<IFF_list_size; index++)
Write_one_byte(IFF_file,IFF_color_list[index]);
Write_one_byte(file,IFF_color_list[index]);
}
}
IFF_list_size=0;
@ -1119,7 +1118,7 @@ printf("%d x %d = %d %d\n", tiny_width, tiny_height, tiny_width*tiny_height, s
}
// - Compresion des couleurs encore plus performante que DP2e et que VPIC -
void New_color(byte color)
void New_color(FILE * file, byte color)
{
byte last_color;
byte second_last_color;
@ -1147,12 +1146,12 @@ printf("%d x %d = %d %d\n", tiny_width, tiny_height, tiny_width*tiny_height, s
IFF_color_list[IFF_list_size]=color;
IFF_list_size++;
if (IFF_list_size==128)
Transfer_colors();
Transfer_colors(file);
}
else // On est en mode <> et on a 3 couleurs qui se suivent
{
IFF_list_size-=2;
Transfer_colors();
Transfer_colors(file);
IFF_color_list[0]=color;
IFF_color_list[1]=color;
IFF_color_list[2]=color;
@ -1166,11 +1165,11 @@ printf("%d x %d = %d %d\n", tiny_width, tiny_height, tiny_width*tiny_height, s
{
IFF_color_list[IFF_list_size++]=color;
if (IFF_list_size==128)
Transfer_colors();
Transfer_colors(file);
}
else // On change de mode...
{
Transfer_colors();
Transfer_colors(file);
IFF_color_list[IFF_list_size]=color;
IFF_list_size++;
}
@ -1181,6 +1180,7 @@ printf("%d x %d = %d %d\n", tiny_width, tiny_height, tiny_width*tiny_height, s
void Save_IFF(T_IO_Context * context)
{
FILE * IFF_file;
char filename[MAX_PATH_CHARACTERS];
T_IFF_Header header;
word x_pos;
@ -1316,10 +1316,10 @@ void Save_IFF(T_IO_Context * context)
for (plane=0; plane<header.BitPlanes; plane++)
{
for (x_pos=0; x_pos<plane_width && !File_error; x_pos++)
New_color(buffer[x_pos+plane*plane_width]);
New_color(IFF_file, buffer[x_pos+plane*plane_width]);
if (!File_error)
Transfer_colors();
Transfer_colors(IFF_file);
}
}
else
@ -1336,13 +1336,13 @@ void Save_IFF(T_IO_Context * context)
for (y_pos=0; ((y_pos<context->Height) && (!File_error)); y_pos++)
{
for (x_pos=0; ((x_pos<context->Width) && (!File_error)); x_pos++)
New_color(Get_pixel(context, x_pos,y_pos));
New_color(IFF_file, Get_pixel(context, x_pos,y_pos));
if (context->Width&1) // odd width fix
New_color(0);
New_color(IFF_file, 0);
if (!File_error)
Transfer_colors();
Transfer_colors(IFF_file);
}
}
fclose(IFF_file);