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n64rawgfx.c
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/* This program is free software. It comes without any warranty, to
* the extent permitted by applicable law. You can redistribute it
* and/or modify it under the terms of the Do What The Fuck You Want
* To Public License, Version 2, as published by Sam Hocevar. See
* the COPYING file for more details. */
#include "n64rawgfx.h"
void n64_export( enum E_FORMAT format, enum E_DEPTH depth, size_t count, const uint8_t *in, uint32_t *out, const uint32_t *pal )
{
switch( format )
{
case FORMAT_RGBA:
{
switch( depth )
{
case DEPTH_16BIT:
{
for( size_t i = 0; i < count; i++ )
{
out[i] = ((in[i * 2 + 1] & 0x01)? 0xff000000 : 0x00000000)
| (in[i * 2] & 0xf8) << 16 | (in[i * 2] & 0xe0) << 11
| (in[i * 2] & 0x07) << 13 | (in[i * 2] & 0x07) << 8
| (in[i * 2 + 1] & 0xc0) << 5
| (in[i * 2 + 1] & 0x3e) << 2 | (in[i * 2 + 1] & 0x38) >> 3;
}
break;
}
case DEPTH_32BIT:
{
for( size_t i = 0; i < count; i++ )
{
out[i] = in[i * 4 + 3] << 24 | in[i * 4] << 16 | in[i * 4 + 1] << 8 | in[i * 4 + 2];
}
break;
}
default:
{
break;
}
}
break;
}
case FORMAT_YUV:
{
break;
}
case FORMAT_CI:
{
switch( depth )
{
case DEPTH_4BIT:
{
for( size_t i = 0; i < count; i+=2 )
{
out[i] = pal[in[i / 2] >> 4];
out[i + 1] = pal[in[i / 2] & 0x0f];
}
break;
}
case DEPTH_8BIT:
{
for( size_t i = 0; i < count; i++ )
{
out[i] = pal[in[i]];
}
break;
}
default:
{
break;
}
}
break;
}
case FORMAT_IA:
{
switch( depth )
{
case DEPTH_4BIT:
{
for( size_t i = 0; i < count; i+=2 )
{
out[i] = ((in[i / 2] & 0x10)? 0xff000000 : 0x00000000)
| (in[i / 2] & 0xe0) << 16 | (in[i / 2] & 0xe0) << 13 | (in[i / 2] & 0xc0) << 10
| (in[i / 2] & 0xe0) << 8 | (in[i / 2] & 0xe0) << 5 | (in[i / 2] & 0xc0) << 2
| (in[i / 2] & 0xe0) | (in[i / 2] & 0xe0) >> 3 | in[i / 2] >> 6;
out[i + 1] = ((in[i / 2] & 0x01)? 0xff000000 : 0x00000000)
| (in[i / 2] & 0x0e) << 20 | (in[i / 2] & 0x0e) << 17 | (in[i / 2] & 0x0c) << 14
| (in[i / 2] & 0x0e) << 12 | (in[i / 2] & 0x0e) << 9 | (in[i / 2] & 0x0c) << 6
| (in[i / 2] & 0x0e) << 4 | (in[i / 2] & 0x0e) << 1 | (in[i / 2] & 0x0c) >> 2;
}
break;
}
case DEPTH_8BIT:
{
for( size_t i = 0; i < count; i++ )
{
out[i] = (in[i] & 0x0f) << 28 | (in[i] & 0x0f) << 24
| (in[i] & 0xf0) << 16 | (in[i] & 0xf0) << 12
| (in[i] & 0xf0) << 8 | (in[i] & 0xf0) << 4
| (in[i] & 0xf0) | in[i] >> 4;
}
break;
}
case DEPTH_16BIT:
{
for( size_t i = 0; i < count; i++ )
{
out[i] = in[i * 2 + 1] << 24 | in[i * 2] << 16 | in[i * 2] << 8 | in[i * 2];
}
break;
}
default:
{
break;
}
}
break;
}
case FORMAT_I:
{
switch( depth )
{
case DEPTH_4BIT:
{
for( size_t i = 0; i < count; i+=2 )
{
out[i] = (in[i / 2] & 0xf0) << 16 | (in[i / 2] & 0xf0) << 12
| (in[i / 2] & 0xf0) << 8 | (in[i / 2] & 0xf0) << 4
| (in[i / 2] & 0xf0) | (in[i / 2] & 0xf0) >> 4;
out[i + 1] = (in[i / 2] & 0x0f) << 20 | (in[i / 2] & 0x0f) << 16
| (in[i / 2] & 0x0f) << 12 | (in[i / 2] & 0x0f) << 8
| (in[i / 2] & 0x0f) << 4 | (in[i / 2] & 0x0f);
}
break;
}
case DEPTH_8BIT:
{
for( size_t i = 0; i < count; i++ )
{
out[i] = in[i] << 16 | in[i] << 8 | in[i];
}
break;
}
default:
{
break;
}
}
break;
}
}
return;
}
void n64_import( enum E_FORMAT format, enum E_DEPTH depth, size_t count, const uint32_t *in, uint8_t *out )
{
switch( format )
{
case FORMAT_RGBA:
{
switch( depth )
{
case DEPTH_16BIT:
{
for( size_t i = 0; i < count; i++ )
{
out[i * 2] = (in[i] & 0xf80000) >> 16 | (in[i] & 0xe000) >> 13;
out[i * 2 + 1] = (in[i] & 0x1800) >> 5 | (in[i] & 0xf8) >> 2 | (in[i] & 0x80000000) >> 31;
}
break;
}
case DEPTH_32BIT:
{
for( size_t i = 0; i < count; i++ )
{
out[i * 4] = (in[i] & 0xff0000) >> 16;
out[i * 4 + 1] = (in[i] & 0xff00) >> 8;
out[i * 4 + 2] = in[i] & 0xff;
out[i * 4 + 3] = (in[i] & 0xff000000) >> 24;
}
break;
}
default:
{
break;
}
}
break;
}
case FORMAT_YUV:
{
break;
}
case FORMAT_CI:
{
break;
}
case FORMAT_IA:
{
switch( depth )
{
case DEPTH_4BIT:
{
for( size_t i = 0; i < count; i+=2 )
{
uint32_t temp1 = ((in[i] & 0xff0000) >> 16) + ((in[i] & 0xff00) >> 7) + (in[i] & 0xff);
uint32_t temp2 = ((in[i + 1] & 0xff0000) >> 16) + ((in[i + 1] & 0xff00) >> 7) + (in[i + 1] & 0xff);
out[i / 2] = ((temp1 + (temp1 >> 8)) & 0x380) >> 2 | (in[i] & 0x80000000) >> 27
| ((temp2 + (temp2 >> 8)) & 0x380) >> 6 | (in[i + 1] & 0x80000000) >> 31;
}
break;
}
case DEPTH_8BIT:
{
for( size_t i = 0; i < count; i++ )
{
uint32_t temp = ((in[i] & 0xff0000) >> 16) + ((in[i] & 0xff00) >> 7) + (in[i] & 0xff);
out[i] = ((temp + (temp >> 8)) & 0x3c0) >> 2 | in[i] >> 28;
}
break;
}
case DEPTH_16BIT:
{
for( size_t i = 0; i < count; i++ )
{
uint32_t temp = ((in[i] & 0xff0000) >> 16) + ((in[i] & 0xff00) >> 7) + (in[i] & 0xff);
out[i * 2] = (temp + (temp >> 8)) >> 2;
out[i * 2 + 1] = (in[i] & 0xff000000) >> 24;
}
break;
}
default:
{
break;
}
}
break;
}
case FORMAT_I:
{
switch( depth )
{
case DEPTH_4BIT:
{
for( size_t i = 0; i < count; i+=2 )
{
uint32_t temp1 = ((in[i] & 0xff0000) >> 16) + ((in[i] & 0xff00) >> 7) + (in[i] & 0xff);
uint32_t temp2 = ((in[i + 1] & 0xff0000) >> 16) + ((in[i + 1] & 0xff00) >> 7) + (in[i + 1] & 0xff);
out[i / 2] = ((temp1 + (temp1 >> 8)) & 0x3c0) >> 2 | ((temp2 + (temp2 >> 8)) & 0x3c0) >> 6;
}
break;
}
case DEPTH_8BIT:
{
for( size_t i = 0; i < count; i++ )
{
uint32_t temp = ((in[i] & 0xff0000) >> 16) + ((in[i] & 0xff00) >> 7) + (in[i] & 0xff);
out[i] = (temp + (temp >> 8)) >> 2;
}
break;
}
default:
{
break;
}
}
break;
}
default:
{
break;
}
}
return;
}