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Save_PRG() supports C64 hires bitmap mode

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Thomas Bernard 2020-01-02 01:55:50 +01:00
parent c820ba61ac
commit 19dec01d4f
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GPG Key ID: 0FF11B67A5C0863C
2 changed files with 121 additions and 64 deletions
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44
src/c64formats.c
View File

@ -1161,15 +1161,17 @@ static int Save_C64_window(enum c64_format *saveFormat, byte *saveWhat, word *lo
return button==1;
}
/// Save a C64 hires picture
///
/// c64 hires is 320x200 with only 2 colors per 8x8 block.
static int Save_C64_hires(T_IO_Context *context, byte saveWhat, word loadAddr)
/**
* Encode a C64 HiRes Bitmap picture.
* 320x200 pixels, with only 2 different colors per 8x8 block.
*
* 8000 bytes bitmap, 1000 bytes screen RAM
*/
static int Encode_C64_hires(T_IO_Context * context, byte * bitmap, byte * screen_ram)
{
int i, pos = 0;
word cx, cy, x, y;
byte screen_ram[1000],bitmap[8000];
FILE *file;
for(cy=0; cy<25; cy++) // Character line, 25 lines
{
@ -1246,7 +1248,21 @@ static int Save_C64_hires(T_IO_Context *context, byte saveWhat, word loadAddr)
}
}
}
return 0;
}
/// Save a C64 hires picture
///
/// c64 hires is 320x200 with only 2 colors per 8x8 block.
static int Save_C64_hires(T_IO_Context *context, byte saveWhat, word loadAddr)
{
byte screen_ram[1000],bitmap[8000];
FILE *file;
int ret;
ret = Encode_C64_hires(context, bitmap, screen_ram);
if (ret != 0)
return ret;
file = Open_file_write(context);
if(!file)
@ -1722,7 +1738,17 @@ void Save_PRG(T_IO_Context * context)
saveFormat = (context->Width == 320) ? F_hires : F_multi;
File_error = 1;
Set_saving_layer(context, 0);
switch (saveFormat)
{
case F_hires:
File_error = Encode_C64_hires(context, bitmap, screen_ram);
break;
case F_multi:
File_error = Encode_C64_multicolor(context, bitmap, screen_ram, color_ram, &background);
break;
default:
GFX2_Log(GFX2_ERROR, "Save_PRG(): format %d not handled (yet?)\n", saveFormat);
}
if (File_error == 0)
{
FILE *file;
@ -1736,7 +1762,7 @@ void Save_PRG(T_IO_Context * context)
}
if (!Write_bytes(file, picview_prg, sizeof(picview_prg)))
File_error = 2;
Write_byte(file, 0x30); // Mode : Bitmap + Multicolor
Write_byte(file, saveFormat == F_multi ? 0x30 : 0x20); // Mode : 0x40 Extended bg, 0x20 Bitmap, 0x10 Multicolor
n = PackBits_pack_buffer(NULL, bitmap, 8000);
GFX2_Log(GFX2_DEBUG, "PackBits of bitmap : 8000 => %d bytes\n", n + 1);
if (n >= 0 && n < 7999)
@ -1764,6 +1790,8 @@ void Save_PRG(T_IO_Context * context)
Write_byte(file, 0x20); // screen RAM / no packing
Write_bytes(file, screen_ram, 1000);
}
if (saveFormat == F_multi)
{
//Write_byte(file, 0x30); // color RAM / no packing
//Write_bytes(file, color_ram, 1000);
Write_byte(file, 0x32); // color RAM / special color RAM packing
@ -1771,8 +1799,10 @@ void Save_PRG(T_IO_Context * context)
if (n < 0)
File_error = 1;
GFX2_Log(GFX2_DEBUG, "custom packing of color RAM : 1000 => %d bytes\n", n);
Write_byte(file, 0x42); // border/background/etc. / color ram RLE packing
Write_byte(file, background | 0x10);
}
Write_byte(file, 0); // end of file
fclose(file);
}

37
src/tests/testformats.c
View File

@ -404,11 +404,12 @@ ret:
int Test_C64_Formats(void)
{
int i;
int i, j;
int ok = 0;
T_IO_Context context;
char path[256];
T_GFX2_Surface * testpicmulti = NULL;
T_GFX2_Surface * testpichires = NULL;
memset(&context, 0, sizeof(context));
context.Type = CONTEXT_SURFACE;
@ -424,6 +425,16 @@ int Test_C64_Formats(void)
}
testpicmulti = context.Surface;
context.Surface = NULL;
// Load a hires picture
context_set_file_path(&context, "../tests/pic-samples/c64/hires/midear.dd");
Load_C64(&context);
if (File_error != 0)
{
fprintf(stderr, "Failed to load reference hires picture\n");
goto ret;
}
testpichires = context.Surface;
context.Surface = NULL;
ok = 1;
for (i = 0; ok && formats[i].name != NULL; i++)
@ -433,16 +444,29 @@ int Test_C64_Formats(void)
if (!(formats[i].flags & FLAG_C64))
continue;
GFX2_Log(GFX2_DEBUG, "Testing format %s (Save)\n", formats[i].name);
snprintf(path, sizeof(path), "/tmp/%s.%s", "test", formats[i].name);
for (j = 0; j < 2; j++)
{
T_GFX2_Surface * ref;
if (j == 0)
{
ref = testpicmulti;
context.Ratio = PIXEL_WIDE;
}
else
{
ref = testpichires;
context.Ratio = PIXEL_SIMPLE;
}
snprintf(path, sizeof(path), "/tmp/%s-%d.%s", "test", j, formats[i].name);
context_set_file_path(&context, path);
// save the reference picture
context.Surface = testpicmulti;
context.Surface = ref;
context.Target_address = context.Surface->pixels;
context.Pitch = context.Surface->w;
context.Width = context.Surface->w;
context.Height = context.Surface->h;
context.Ratio = PIXEL_WIDE;
memcpy(context.Palette, context.Surface->palette, sizeof(T_Palette));
context.Format = formats[i].format;
File_error = 0;
@ -484,7 +508,7 @@ int Test_C64_Formats(void)
}
else
{
if (memcmp(testpicmulti->pixels, context.Surface->pixels, 160*200) != 0)
if (memcmp(ref->pixels, context.Surface->pixels, ref->w * ref->h) != 0)
{
GFX2_Log(GFX2_ERROR, "Save_%s/Load_%s: Pixels mismatch\n", formats[i].name, formats[i].name);
ok = 0;
@ -494,9 +518,12 @@ int Test_C64_Formats(void)
}
}
}
}
ret:
if (testpicmulti)
Free_GFX2_Surface(testpicmulti);
if (testpichires)
Free_GFX2_Surface(testpichires);
free(context.File_name);
free(context.File_directory);
return ok;