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JpegUtils_GetHuffmanCodes

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This commit is contained in:
alexanderkarlis
2026-02-27 14:48:01 -05:00
parent b8e8c5caba
commit 5e43fa88ff
2 changed files with 24 additions and 35 deletions
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2
linker_scripts/us/symbol_addrs_code.txt
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@@ -307,7 +307,7 @@ __LeoBootGame2 = 0x8000B9EC; // type:func
__LeoBootGame3 = 0x8000BD10; // type:func
JpegUtils_ProcessQuantizationTable = 0x8000BD70; // type:func
JpegUtils_ParseHuffmanCodesLengths = 0x8000BDD8; // type:func
func_8000BE5C = 0x8000BE5C; // type:func
JpegUtils_GetHuffmanCodes = 0x8000BE5C; // type:func
JpegUtils_SetHuffmanTable = 0x8000BEC8; // type:func
func_8000BF70 = 0x8000BF70; // type:func
func_8000C02C = 0x8000C02C; // type:func

57
src/C970.c
View File

@@ -39,44 +39,33 @@ s32 JpegUtils_ParseHuffmanCodesLengths(u8* ptr, u8* codesLengths) {
return count;
}
#ifdef NON_MATCHING
s16 func_8000BE5C(u8* arg0, u16* arg1) {
s16 var_v0;
s16 var_v1;
s32 temp_t6;
u8 temp_t0;
u8 var_a2;
u8 var_a3;
s16 JpegUtils_GetHuffmanCodes(u8* codesLengths, u16* codes) {
s16 idx = 0;
u16 code = 0;
u8 lastLen = codesLengths[0];
var_a2 = *arg0;
var_v1 = 0;
var_v0 = 0;
var_a3 = var_a2;
while (true) {
while (true) {
codes[idx++] = code++;
while(1) {
temp_t6 = var_v1 * 2;
var_v1 += 1;
arg1[temp_t6] = var_v0;
temp_t0 = arg0[var_v1];
var_v0 = (var_v0 + 1) & 0xFFFF;
if (var_a3 == temp_t0) {
continue;
if (codesLengths[idx] != lastLen) {
break;
}
}
if (temp_t0 != 0) {
do {
var_a3 = (var_a2 + 1) & 0xFF;
var_v0 = (var_v0 * 2) & 0xFFFF;
var_a2 = var_a3;
} while (temp_t0 != var_a3);
continue;
if (codesLengths[idx] == 0) {
break;
}
while (true) {
if (code <<= 1, codesLengths[idx] == ++lastLen) {
break;
}
}
break;
}
return var_v1;
return idx;
}
#else
#pragma GLOBAL_ASM("asm/us/nonmatchings/C970/func_8000BE5C.s")
#endif
u16 JpegUtils_SetHuffmanTable(u8* data, JpegHuffmanTable* ht, u16* codes) {
u8 idx;
@@ -105,7 +94,7 @@ s16 func_8000BF70(u8* arg0, JpegHuffmanTable* arg1, u8* arg2, u16* arg3, u8 arg4
if ((temp_v0 == 0) || ((arg4 != 0) && (temp_v0 >= 0x101)) || ((arg4 == 0) && (temp_v0 >= 0x11))) {
return 0;
}
if (func_8000BE5C(arg2, arg3) != temp_v0) {
if (JpegUtils_GetHuffmanCodes(arg2, arg3) != temp_v0) {
return 0;
}
if (temp_v0 != JpegUtils_SetHuffmanTable(arg0, arg1, arg3)) {
@@ -170,7 +159,7 @@ s32 func_8000C1AC(u8* arg0, unk_func_8000C104_arg1* arg1, u8* arg2, u16* arg3) {
return 1;
}
sp2C = temp_v0;
if (func_8000BE5C(arg2, arg3) != temp_v0) {
if (JpegUtils_GetHuffmanCodes(arg2, arg3) != temp_v0) {
return 1;
}
func_8000C104((u8*)temp_s0 + 0x10, arg1, arg2, arg3, temp_v0, sp2F);