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Attempt to decompile pakConvertFromGbcImage

This commit is contained in:
Ryan Dwyer 2022-07-03 13:28:19 +10:00
parent b4dab9844a
commit db3d959ae8
2 changed files with 53 additions and 5 deletions
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57
src/game/pak.c
View File

@ -7097,7 +7097,7 @@ bool pak0f11d7c4(s8 device)
}
GLOBAL_ASM(
glabel pak0f11d8b4
glabel pakConvertFromGbcImage
/* f11d8b4: 27bdffe0 */ addiu $sp,$sp,-32
/* f11d8b8: afb6001c */ sw $s6,0x1c($sp)
/* f11d8bc: afb50018 */ sw $s5,0x18($sp)
@ -7174,6 +7174,55 @@ glabel pak0f11d8b4
/* f11d9c0: 27bd0020 */ addiu $sp,$sp,0x20
);
/**
* Convert camera pixel data from the Game Boy Camera's format and write it to
* a 128x128 byte array.
*
* The GBC's format is 128x112 pixels at 2 bits per pixel. The bits are not
* linear; the two bits for each pixel are in neighbouring bytes using the same
* bit index. It also appears that the the GBC format is column major.
*/
//void pakConvertFromGbcImage(u8 *src, u8 *dst)
//{
// s32 i;
// s32 j;
// s32 byte;
// s32 bit;
// s32 a0;
// s32 a3;
// s32 t2;
// u8 *s2;
//
// for (i = 0; i < 16; i++) {
// a0 = (i * 16) << 4;
//
// for (j = 0; j < 16; j++) {
// s2 = &src[a0];
//
// for (byte = 0; byte < 8; byte++) {
// t2 = (i * 8 + byte) << 7;
// a3 = j * 8;
//
// for (bit = 0; bit < 8; bit++) {
// dst[t2 + a3] = 0;
//
// if ((s2[byte * 2 + 0] & (0x80 >> bit)) == 0) {
// dst[t2 + a3] += 0x40;
// }
//
// if ((s2[byte * 2 + 1] & (0x80 >> bit)) == 0) {
// dst[t2 + a3] += 0x80;
// }
//
// a3++;
// }
// }
//
// a0 += 16;
// }
// }
//}
/**
* Perform operations on a 128 x 128 image.
*/
@ -7196,7 +7245,7 @@ void pak0f11d9c4(s8 device, u8 *arg1, u8 *arg2, u32 arg3)
break;
case 1:
if (arg1 != NULL) {
pak0f11d8b4(g_Paks[device].unk2c4, sp60);
pakConvertFromGbcImage(g_Paks[device].unk2c4, sp60);
for (i = 0; i < 128; i++) {
for (j = 0; j < 128; j++) {
@ -7207,7 +7256,7 @@ void pak0f11d9c4(s8 device, u8 *arg1, u8 *arg2, u32 arg3)
break;
case 2:
if (arg1 != NULL) {
pak0f11d8b4(g_Paks[device].unk2c4, sp60);
pakConvertFromGbcImage(g_Paks[device].unk2c4, sp60);
for (i = 0; i < 128; i++) {
for (j = 0; j < 128; j++) {
@ -7218,7 +7267,7 @@ void pak0f11d9c4(s8 device, u8 *arg1, u8 *arg2, u32 arg3)
break;
case 3:
if (arg1 != NULL) {
pak0f11d8b4(g_Paks[device].unk2c4, arg1);
pakConvertFromGbcImage(g_Paks[device].unk2c4, arg1);
}
break;
}

1
src/include/game/pak.h
View File

@ -119,7 +119,6 @@ bool pak0f11d4dc(s8 device);
s32 pak0f11d540(s8 device, s32 arg1);
s32 pak0f11d5b0(s8 device);
void pak0f11d620(s8 device);
void pak0f11d8b4(u8 *arg0, u8 *arg1);
void pak0f11d9c4(s8 device, u8 *arg1, u8 *arg2, u32 arg3);
#if VERSION >= VERSION_NTSC_1_0