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Load_IFF() : support 24bits files

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This commit is contained in:
Thomas Bernard 2018-02-02 13:24:05 +01:00
parent 38c9e3e2cf
commit 7a9a862e26
1 changed files with 17 additions and 6 deletions
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23
src/fileformats.c
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@ -484,11 +484,11 @@ byte IFF_Wait_for(FILE * file, const char * expected_section)
/// @param x_pos Position of the pixel in graphic line
/// @param real_line_size Width of one bitplane in memory, in bytes
/// @param bitplanes Number of bitplanes
byte Get_IFF_color(const byte * buffer, word x_pos, word real_line_size, byte bitplanes)
dword Get_IFF_color(const byte * buffer, word x_pos, word real_line_size, byte bitplanes)
{
byte shift = 7 - (x_pos & 7);
int address,masked_bit,plane;
byte color=0;
dword color=0;
for(plane=bitplanes-1;plane>=0;plane--)
{
@ -524,7 +524,15 @@ void Set_IFF_color(byte * buffer, word x_pos, byte color, word real_line_size, b
if (Image_HAM<=1) // ILBM
{
for (x_pos=0; x_pos<context->Width; x_pos++)
if (bitplanes > 8)
{
for (x_pos=0; x_pos<context->Width; x_pos++)
{
dword rgb = Get_IFF_color(buffer, x_pos,real_line_size, bitplanes);
Set_pixel_24b(context, x_pos,y_pos, rgb >> 16, rgb >> 8, rgb);
}
}
else for (x_pos=0; x_pos<context->Width; x_pos++)
{
Set_pixel(context, x_pos,y_pos,Get_IFF_color(buffer, x_pos,real_line_size, bitplanes));
}
@ -680,6 +688,7 @@ void Load_IFF(T_IO_Context * context)
byte * buffer;
T_Components * SHAM_palettes = NULL;
unsigned SHAM_palette_count = 0;
byte truecolor = 0;
Get_full_filename(filename, context->File_name, context->File_directory);
@ -758,6 +767,8 @@ void Load_IFF(T_IO_Context * context)
else
ratio = PIXEL_WIDE; // 1.5 <= ratio
}
if (header.BitPlanes > 8)
truecolor = 1;
while (File_error == 0
&& Read_bytes(IFF_file,section,4)
@ -886,7 +897,7 @@ printf("%d x %d = %d %d\n", tiny_width, tiny_height, tiny_width*tiny_height, s
// Load thumbnail if in preview mode
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);
Pre_load(context, tiny_width, tiny_height,file_size,iff_format,ratio,truecolor);
PBM_Decode(context, IFF_file, header.Compression, tiny_width, tiny_height);
fclose(IFF_file);
IFF_file = NULL;
@ -900,7 +911,7 @@ printf("%d x %d = %d %d\n", tiny_width, tiny_height, tiny_width*tiny_height, s
Original_screen_X = header.X_screen;
Original_screen_Y = header.Y_screen;
Pre_load(context, header.Width, header.Height, file_size, iff_format, ratio, 0);
Pre_load(context, header.Width, header.Height, file_size, iff_format, ratio, truecolor);
context->Background_transparent = header.Mask == 2;
context->Transparent_color = context->Background_transparent ? header.Transp_col : 0;
@ -1068,7 +1079,7 @@ printf("%d x %d = %d %d\n", tiny_width, tiny_height, tiny_width*tiny_height, s
File_error = 32;
}
}
else // "PBM ": Planar(?) BitMap
else // "PBM ": Packed BitMap
{
PBM_Decode(context, IFF_file, header.Compression, context->Width, context->Height);
}