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Some endianness fixes in load/save of formats KCF, IMG, CEL, IMG, BMP. Now all file operations are done directly with the right endianness.

Browse Source 
git-svn-id: svn://pulkomandy.tk/GrafX2/trunk@1226 416bcca6-2ee7-4201-b75f-2eb2f807beb1
This commit is contained in:
Yves Rizoud
2009-11-26 23:34:51 +00:00
parent 3538abadb9
commit 224902e18e
2 changed files with 119 additions and 59 deletions
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109
fileformats.c
View File

@@ -57,7 +57,12 @@ void Test_IMG(void)
if ((file=fopen(filename, "rb")))
{
// Lecture et vérification de la signature
if (Read_bytes(file,&IMG_header,sizeof(T_IMG_Header)))
if (Read_bytes(file,IMG_header.Filler1,sizeof(IMG_header.Filler1))
&& Read_word_le(file,&(IMG_header.Width))
&& Read_word_le(file,&(IMG_header.Height))
&& Read_bytes(file,IMG_header.Filler2,sizeof(IMG_header.Filler2))
&& Read_bytes(file,IMG_header.Palette,sizeof(IMG_header.Palette))
)
{
if ( (!memcmp(IMG_header.Filler1,signature,6))
&& IMG_header.Width && IMG_header.Height)
@@ -87,14 +92,14 @@ void Load_IMG(void)
{
file_size=File_length_file(file);
if (Read_bytes(file,&IMG_header,sizeof(T_IMG_Header)))
if (Read_bytes(file,IMG_header.Filler1,sizeof(IMG_header.Filler1))
&& Read_word_le(file,&(IMG_header.Width))
&& Read_word_le(file,&(IMG_header.Height))
&& Read_bytes(file,IMG_header.Filler2,sizeof(IMG_header.Filler2))
&& Read_bytes(file,IMG_header.Palette,sizeof(IMG_header.Palette))
)
{
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
IMG_header.Width = SDL_Swap16(IMG_header.Width);
IMG_header.Height = SDL_Swap16(IMG_header.Height);
#endif
buffer=(byte *)malloc(IMG_header.Width);
Init_preview(IMG_header.Width,IMG_header.Height,file_size,FORMAT_IMG,PIXEL_SIMPLE);
@@ -160,12 +165,13 @@ void Save_IMG(void)
memcpy(IMG_header.Palette,Main_palette,sizeof(T_Palette));
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
IMG_header.Width = SDL_Swap16(IMG_header.Width);
IMG_header.Height = SDL_Swap16(IMG_header.Height);
#endif
if (Write_bytes(file,IMG_header.Filler1,sizeof(IMG_header.Filler1))
&& Write_word_le(file,IMG_header.Width)
&& Write_word_le(file,IMG_header.Height)
&& Write_bytes(file,IMG_header.Filler2,sizeof(IMG_header.Filler2))
&& Write_bytes(file,IMG_header.Palette,sizeof(IMG_header.Palette))
)
if (Write_bytes(file,&IMG_header,sizeof(T_IMG_Header)))
{
Init_write_buffer();
@@ -980,10 +986,9 @@ void Save_LBM(void)
//////////////////////////////////// BMP ////////////////////////////////////
#pragma pack(1)
typedef struct
{
word Signature; // ='BM' = 0x4D42
byte Signature[2]; // ='BM' = 0x4D42
dword Size_1; // file size
word Reserved_1; // 0
word Reserved_2; // 0
@@ -1001,7 +1006,6 @@ typedef struct
dword Nb_Clr;
dword Clr_Imprt;
} T_BMP_Header;
#pragma pack()
// -- Tester si un fichier est au format BMP --------------------------------
void Test_BMP(void)
@@ -1034,11 +1038,8 @@ void Test_BMP(void)
)
{
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
header.Signature = SDL_Swap16(header.Signature);
#endif
if ( (header.Signature==0x4D42) && (header.Size_2==40)
if ( header.Signature[0]=='B' && header.Signature[1]=='M'
&& header.Size_2==40
&& header.Width && header.Height )
File_error=0;
}
@@ -1111,7 +1112,7 @@ void Load_BMP(void)
{
file_size=File_length_file(file);
if (Read_word_le(file,&(header.Signature))
if (Read_bytes(file,header.Signature,2)
&& Read_dword_le(file,&(header.Size_1))
&& Read_word_le(file,&(header.Reserved_1))
&& Read_word_le(file,&(header.Reserved_2))
@@ -1461,11 +1462,8 @@ void Save_BMP(void)
else
line_size=Main_image_width;
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
header.Signature = 0x424D;
#else
header.Signature = 0x4D42;
#endif
header.Signature[0] = 'B';
header.Signature[1] = 'M';
header.Size_1 =(line_size*Main_image_height)+1078;
header.Reserved_1 =0;
header.Reserved_2 =0;
@@ -1482,18 +1480,22 @@ void Save_BMP(void)
header.Nb_Clr =0;
header.Clr_Imprt =0;
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
header.Size_1 = SDL_Swap32( header.Size_1 );
header.Offset = SDL_Swap32( header.Offset );
header.Size_2 = SDL_Swap32( header.Size_2 );
header.Width = SDL_Swap32( header.Width );
header.Height = SDL_Swap32( header.Height );
header.Planes = SDL_Swap16( header.Planes );
header.Nb_bits = SDL_Swap16( header.Nb_bits );
// If you ever set any more fields to non-zero, please swap here!
#endif
if (Write_bytes(file,&header,sizeof(T_BMP_Header)))
if (Write_bytes(file,header.Signature,2)
&& Write_dword_le(file,header.Size_1)
&& Write_word_le(file,header.Reserved_1)
&& Write_word_le(file,header.Reserved_2)
&& Write_dword_le(file,header.Offset)
&& Write_dword_le(file,header.Size_2)
&& Write_dword_le(file,header.Width)
&& Write_dword_le(file,header.Height)
&& Write_word_le(file,header.Planes)
&& Write_word_le(file,header.Nb_bits)
&& Write_dword_le(file,header.Compression)
&& Write_dword_le(file,header.Size_3)
&& Write_dword_le(file,header.XPM)
&& Write_dword_le(file,header.YPM)
&& Write_dword_le(file,header.Nb_Clr)
&& Write_dword_le(file,header.Clr_Imprt))
{
// Chez Bill, ils ont dit: "On va mettre les couleur dans l'ordre
// inverse, et pour faire chier, on va les mettre sur une échelle de
@@ -2562,11 +2564,7 @@ void Load_PCX(void)
if ((file=fopen(filename, "rb")))
{
file_size=File_length_file(file);
/*
if (Read_bytes(file,&PCX_header,sizeof(T_PCX_Header)))
{*/
file_size=File_length_file(file);
if (Read_byte(file,&(PCX_header.Manufacturer)) &&
Read_byte(file,&(PCX_header.Version)) &&
Read_byte(file,&(PCX_header.Compression)) &&
@@ -2976,7 +2974,6 @@ void Save_PCX(void)
//////////////////////////////////// SCx ////////////////////////////////////
#pragma pack(1)
typedef struct
{
byte Filler1[4];
@@ -2985,7 +2982,6 @@ typedef struct
byte Filler2;
byte Planes;
} T_SCx_Header;
#pragma pack()
// -- Tester si un fichier est au format SCx --------------------------------
void Test_SCx(void)
@@ -3004,7 +3000,12 @@ void Test_SCx(void)
if ((file=fopen(filename, "rb")))
{
// Lecture et vérification de la signature
if ((Read_bytes(file,&SCx_header,sizeof(T_SCx_Header))))
if (Read_bytes(file,SCx_header.Filler1,sizeof(SCx_header.Filler1))
&& Read_word_le(file, &(SCx_header.Width))
&& Read_word_le(file, &(SCx_header.Height))
&& Read_byte(file, &(SCx_header.Filler2))
&& Read_byte(file, &(SCx_header.Planes))
)
{
if ( (!memcmp(SCx_header.Filler1,"RIX",3))
&& SCx_header.Width && SCx_header.Height)
@@ -3035,7 +3036,12 @@ void Load_SCx(void)
{
file_size=File_length_file(file);
if ((Read_bytes(file,&SCx_header,sizeof(T_SCx_Header))))
if (Read_bytes(file,SCx_header.Filler1,sizeof(SCx_header.Filler1))
&& Read_word_le(file, &(SCx_header.Width))
&& Read_word_le(file, &(SCx_header.Height))
&& Read_byte(file, &(SCx_header.Filler2))
&& Read_byte(file, &(SCx_header.Planes))
)
{
Init_preview(SCx_header.Width,SCx_header.Height,file_size,FORMAT_SCx,PIXEL_SIMPLE);
if (File_error==0)
@@ -3127,8 +3133,13 @@ void Save_SCx(void)
SCx_header.Filler2=0xAF;
SCx_header.Planes=0x00;
if (Write_bytes(file,&SCx_header,sizeof(T_SCx_Header)) &&
Write_bytes(file,&palette_64,sizeof(T_Palette)))
if (Write_bytes(file,SCx_header.Filler1,sizeof(SCx_header.Filler1))
&& Write_word_le(file, SCx_header.Width)
&& Write_word_le(file, SCx_header.Height)
&& Write_byte(file, SCx_header.Filler2)
&& Write_byte(file, SCx_header.Planes)
&& Write_bytes(file,&palette_64,sizeof(T_Palette))
)
{
Init_write_buffer();