Misaki/Misaki.HighPerformance
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Misaki.HighPerformance/Misaki.HighPerformance.Image/StbImage.Generated.Bmp.cs
Misaki eeff3313b5 Add image processing and memory management features 
Added new namespace `Misaki.HighPerformance.Image` for image processing, including classes for animated GIF handling and memory management.
Added `AnimatedFrameResult` class for individual frames in animated images.
Added `AnimatedGifEnumerator` class for enumerating frames in animated GIFs.
Added `ColorComponents` enum for different color formats.
Added `ImageInfo` struct for image dimensions and color components.
Added `CRuntime` class for low-level memory management functions.
Added `MemoryStats` class to track memory allocation statistics.
Added utility functions for creating multi-dimensional arrays.
Added new structures for fixed-size UTF-8 encoded strings.
Added benchmarking classes to test new memory management features.

Changed `StbImage.cs` to include new namespaces and functionality for image data manipulation.
Changed project files to target .NET 9.0 and enable new features.
Changed `Arena.cs` and `DynamicArena.cs` to use `nuint` for size parameters.
Changed `BitSet.cs` to enhance bit manipulation methods.
Changed `Program.cs` to run `FunctionPtrBenchmark` for performance testing.

Removed memory tracking code from `AllocationManager.cs`, including the `_allocated` dictionary and related logic.
Removed `Free` method from `IAllocator.cs` interface.
Removed `UNSAFE_COLLECTION_CHECK` preprocessor directive from the codebase.

Refactored various files to improve organization, moving from `Unsafe` to `LowLevel` namespace.
Refactored `MemoryUtilities` class to include new memory operation methods.
Refactored `UnsafeUtilities.cs` to support new collection structures.
2025-07-12 19:48:42 +09:00

495 lines
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// Generated by Sichem at 9/16/2024 9:09:30 AM
using System.Runtime.InteropServices;
using Misaki.HighPerformance.Image.Runtime;
using Misaki.HighPerformance.Image;
namespace Misaki.HighPerformance.Image
{
unsafe partial class StbImage
{
public static int stbi__bmp_test(stbi__context s)
{
var r = stbi__bmp_test_raw(s);
stbi__rewind(s);
return r;
}
public static void* stbi__bmp_load(stbi__context s, int* x, int* y, int* comp, int req_comp,
stbi__result_info* ri)
{
byte* _out_;
uint mr = 0;
uint mg = 0;
uint mb = 0;
uint ma = 0;
uint all_a = 0;
var pal = Utility.CreateArray<byte>(256, 4);
var psize = 0;
var i = 0;
var j = 0;
var width = 0;
var flip_vertically = 0;
var pad = 0;
var target = 0;
var info = new stbi__bmp_data();
info.all_a = 255;
if (stbi__bmp_parse_header(s, &info) == null)
return null;
flip_vertically = (int)s.img_y > 0 ? 1 : 0;
s.img_y = (uint)CRuntime.abs((int)s.img_y);
if (s.img_y > 1 << 24)
return (byte*)(ulong)(stbi__err("too large") != 0 ? 0 : 0);
if (s.img_x > 1 << 24)
return (byte*)(ulong)(stbi__err("too large") != 0 ? 0 : 0);
mr = info.mr;
mg = info.mg;
mb = info.mb;
ma = info.ma;
all_a = info.all_a;
if (info.hsz == 12)
{
if (info.bpp < 24)
psize = (info.offset - info.extra_read - 24) / 3;
}
else
{
if (info.bpp < 16)
psize = (info.offset - info.extra_read - info.hsz) >> 2;
}
if (psize == 0)
{
var bytes_read_so_far = (int)s.Stream.Position;
var header_limit = 1024;
var extra_data_limit = 256 * 4;
if (bytes_read_so_far <= 0 || bytes_read_so_far > header_limit)
return (byte*)(ulong)(stbi__err("bad header") != 0 ? 0 : 0);
if (info.offset < bytes_read_so_far || info.offset - bytes_read_so_far > extra_data_limit)
return (byte*)(ulong)(stbi__err("bad offset") != 0 ? 0 : 0);
stbi__skip(s, info.offset - bytes_read_so_far);
}
if (info.bpp == 24 && ma == 0xff000000)
s.img_n = 3;
else
s.img_n = ma != 0 ? 4 : 3;
if (req_comp != 0 && req_comp >= 3)
target = req_comp;
else
target = s.img_n;
if (stbi__mad3sizes_valid(target, (int)s.img_x, (int)s.img_y, 0) == 0)
return (byte*)(ulong)(stbi__err("too large") != 0 ? 0 : 0);
_out_ = (byte*)stbi__malloc_mad3(target, (int)s.img_x, (int)s.img_y, 0);
if (_out_ == null)
return (byte*)(ulong)(stbi__err("outofmem") != 0 ? 0 : 0);
if (info.bpp < 16)
{
var z = 0;
if (psize == 0 || psize > 256)
{
CRuntime.free(_out_);
return (byte*)(ulong)(stbi__err("invalid") != 0 ? 0 : 0);
}
for (i = 0; i < psize; ++i)
{
pal[i][2] = stbi__get8(s);
pal[i][1] = stbi__get8(s);
pal[i][0] = stbi__get8(s);
if (info.hsz != 12)
stbi__get8(s);
pal[i][3] = 255;
}
stbi__skip(s, info.offset - info.extra_read - info.hsz - psize * (info.hsz == 12 ? 3 : 4));
if (info.bpp == 1)
{
width = (int)((s.img_x + 7) >> 3);
}
else if (info.bpp == 4)
{
width = (int)((s.img_x + 1) >> 1);
}
else if (info.bpp == 8)
{
width = (int)s.img_x;
}
else
{
CRuntime.free(_out_);
return (byte*)(ulong)(stbi__err("bad bpp") != 0 ? 0 : 0);
}
pad = -width & 3;
if (info.bpp == 1)
for (j = 0; j < (int)s.img_y; ++j)
{
var bit_offset = 7;
int v = stbi__get8(s);
for (i = 0; i < (int)s.img_x; ++i)
{
var color = (v >> bit_offset) & 0x1;
_out_[z++] = pal[color][0];
_out_[z++] = pal[color][1];
_out_[z++] = pal[color][2];
if (target == 4)
_out_[z++] = 255;
if (i + 1 == (int)s.img_x)
break;
if (--bit_offset < 0)
{
bit_offset = 7;
v = stbi__get8(s);
}
}
stbi__skip(s, pad);
}
else
for (j = 0; j < (int)s.img_y; ++j)
{
for (i = 0; i < (int)s.img_x; i += 2)
{
int v = stbi__get8(s);
var v2 = 0;
if (info.bpp == 4)
{
v2 = v & 15;
v >>= 4;
}
_out_[z++] = pal[v][0];
_out_[z++] = pal[v][1];
_out_[z++] = pal[v][2];
if (target == 4)
_out_[z++] = 255;
if (i + 1 == (int)s.img_x)
break;
v = info.bpp == 8 ? stbi__get8(s) : v2;
_out_[z++] = pal[v][0];
_out_[z++] = pal[v][1];
_out_[z++] = pal[v][2];
if (target == 4)
_out_[z++] = 255;
}
stbi__skip(s, pad);
}
}
else
{
var rshift = 0;
var gshift = 0;
var bshift = 0;
var ashift = 0;
var rcount = 0;
var gcount = 0;
var bcount = 0;
var acount = 0;
var z = 0;
var easy = 0;
stbi__skip(s, info.offset - info.extra_read - info.hsz);
if (info.bpp == 24)
width = (int)(3 * s.img_x);
else if (info.bpp == 16)
width = (int)(2 * s.img_x);
else
width = 0;
pad = -width & 3;
if (info.bpp == 24)
easy = 1;
else if (info.bpp == 32)
if (mb == 0xff && mg == 0xff00 && mr == 0x00ff0000 && ma == 0xff000000)
easy = 2;
if (easy == 0)
{
if (mr == 0 || mg == 0 || mb == 0)
{
CRuntime.free(_out_);
return (byte*)(ulong)(stbi__err("bad masks") != 0 ? 0 : 0);
}
rshift = stbi__high_bit(mr) - 7;
rcount = stbi__bitcount(mr);
gshift = stbi__high_bit(mg) - 7;
gcount = stbi__bitcount(mg);
bshift = stbi__high_bit(mb) - 7;
bcount = stbi__bitcount(mb);
ashift = stbi__high_bit(ma) - 7;
acount = stbi__bitcount(ma);
if (rcount > 8 || gcount > 8 || bcount > 8 || acount > 8)
{
CRuntime.free(_out_);
return (byte*)(ulong)(stbi__err("bad masks") != 0 ? 0 : 0);
}
}
for (j = 0; j < (int)s.img_y; ++j)
{
if (easy != 0)
{
for (i = 0; i < (int)s.img_x; ++i)
{
byte a = 0;
_out_[z + 2] = stbi__get8(s);
_out_[z + 1] = stbi__get8(s);
_out_[z + 0] = stbi__get8(s);
z += 3;
a = (byte)(easy == 2 ? stbi__get8(s) : 255);
all_a |= a;
if (target == 4)
_out_[z++] = a;
}
}
else
{
var bpp = info.bpp;
for (i = 0; i < (int)s.img_x; ++i)
{
var v = bpp == 16 ? (uint)stbi__get16le(s) : stbi__get32le(s);
uint a = 0;
_out_[z++] = (byte)(stbi__shiftsigned(v & mr, rshift, rcount) & 255);
_out_[z++] = (byte)(stbi__shiftsigned(v & mg, gshift, gcount) & 255);
_out_[z++] = (byte)(stbi__shiftsigned(v & mb, bshift, bcount) & 255);
a = (uint)(ma != 0 ? stbi__shiftsigned(v & ma, ashift, acount) : 255);
all_a |= a;
if (target == 4)
_out_[z++] = (byte)(a & 255);
}
}
stbi__skip(s, pad);
}
}
if (target == 4 && all_a == 0)
for (i = (int)(4 * s.img_x * s.img_y - 1); i >= 0; i -= 4)
_out_[i] = 255;
if (flip_vertically != 0)
{
byte t = 0;
for (j = 0; j < (int)s.img_y >> 1; ++j)
{
var p1 = _out_ + j * s.img_x * target;
var p2 = _out_ + (s.img_y - 1 - j) * s.img_x * target;
for (i = 0; i < (int)s.img_x * target; ++i)
{
t = p1[i];
p1[i] = p2[i];
p2[i] = t;
}
}
}
if (req_comp != 0 && req_comp != target)
{
_out_ = stbi__convert_format(_out_, target, req_comp, s.img_x, s.img_y);
if (_out_ == null)
return _out_;
}
*x = (int)s.img_x;
*y = (int)s.img_y;
if (comp != null)
*comp = s.img_n;
return _out_;
}
public static int stbi__bmp_info(stbi__context s, int* x, int* y, int* comp)
{
void* p;
var info = new stbi__bmp_data();
info.all_a = 255;
p = stbi__bmp_parse_header(s, &info);
if (p == null)
{
stbi__rewind(s);
return 0;
}
if (x != null)
*x = (int)s.img_x;
if (y != null)
*y = (int)s.img_y;
if (comp != null)
{
if (info.bpp == 24 && info.ma == 0xff000000)
*comp = 3;
else
*comp = info.ma != 0 ? 4 : 3;
}
return 1;
}
public static int stbi__bmp_test_raw(stbi__context s)
{
var r = 0;
var sz = 0;
if (stbi__get8(s) != 66)
return 0;
if (stbi__get8(s) != 77)
return 0;
stbi__get32le(s);
stbi__get16le(s);
stbi__get16le(s);
stbi__get32le(s);
sz = (int)stbi__get32le(s);
r = sz == 12 || sz == 40 || sz == 56 || sz == 108 || sz == 124 ? 1 : 0;
return r;
}
public static int stbi__bmp_set_mask_defaults(stbi__bmp_data* info, int compress)
{
if (compress == 3)
return 1;
if (compress == 0)
{
if (info->bpp == 16)
{
info->mr = 31u << 10;
info->mg = 31u << 5;
info->mb = 31u << 0;
}
else if (info->bpp == 32)
{
info->mr = 0xffu << 16;
info->mg = 0xffu << 8;
info->mb = 0xffu << 0;
info->ma = 0xffu << 24;
info->all_a = 0;
}
else
{
info->mr = info->mg = info->mb = info->ma = 0;
}
return 1;
}
return 0;
}
public static void* stbi__bmp_parse_header(stbi__context s, stbi__bmp_data* info)
{
var hsz = 0;
if (stbi__get8(s) != 66 || stbi__get8(s) != 77)
return (byte*)(ulong)(stbi__err("not BMP") != 0 ? 0 : 0);
stbi__get32le(s);
stbi__get16le(s);
stbi__get16le(s);
info->offset = (int)stbi__get32le(s);
info->hsz = hsz = (int)stbi__get32le(s);
info->mr = info->mg = info->mb = info->ma = 0;
info->extra_read = 14;
if (info->offset < 0)
return (byte*)(ulong)(stbi__err("bad BMP") != 0 ? 0 : 0);
if (hsz != 12 && hsz != 40 && hsz != 56 && hsz != 108 && hsz != 124)
return (byte*)(ulong)(stbi__err("unknown BMP") != 0 ? 0 : 0);
if (hsz == 12)
{
s.img_x = (uint)stbi__get16le(s);
s.img_y = (uint)stbi__get16le(s);
}
else
{
s.img_x = stbi__get32le(s);
s.img_y = stbi__get32le(s);
}
if (stbi__get16le(s) != 1)
return (byte*)(ulong)(stbi__err("bad BMP") != 0 ? 0 : 0);
info->bpp = stbi__get16le(s);
if (hsz != 12)
{
var compress = (int)stbi__get32le(s);
if (compress == 1 || compress == 2)
return (byte*)(ulong)(stbi__err("BMP RLE") != 0 ? 0 : 0);
if (compress >= 4)
return (byte*)(ulong)(stbi__err("BMP JPEG/PNG") != 0 ? 0 : 0);
if (compress == 3 && info->bpp != 16 && info->bpp != 32)
return (byte*)(ulong)(stbi__err("bad BMP") != 0 ? 0 : 0);
stbi__get32le(s);
stbi__get32le(s);
stbi__get32le(s);
stbi__get32le(s);
stbi__get32le(s);
if (hsz == 40 || hsz == 56)
{
if (hsz == 56)
{
stbi__get32le(s);
stbi__get32le(s);
stbi__get32le(s);
stbi__get32le(s);
}
if (info->bpp == 16 || info->bpp == 32)
{
if (compress == 0)
{
stbi__bmp_set_mask_defaults(info, compress);
}
else if (compress == 3)
{
info->mr = stbi__get32le(s);
info->mg = stbi__get32le(s);
info->mb = stbi__get32le(s);
info->extra_read += 12;
if (info->mr == info->mg && info->mg == info->mb)
return (byte*)(ulong)(stbi__err("bad BMP") != 0 ? 0 : 0);
}
else
{
return (byte*)(ulong)(stbi__err("bad BMP") != 0 ? 0 : 0);
}
}
}
else
{
var i = 0;
if (hsz != 108 && hsz != 124)
return (byte*)(ulong)(stbi__err("bad BMP") != 0 ? 0 : 0);
info->mr = stbi__get32le(s);
info->mg = stbi__get32le(s);
info->mb = stbi__get32le(s);
info->ma = stbi__get32le(s);
if (compress != 3)
stbi__bmp_set_mask_defaults(info, compress);
stbi__get32le(s);
for (i = 0; i < 12; ++i)
stbi__get32le(s);
if (hsz == 124)
{
stbi__get32le(s);
stbi__get32le(s);
stbi__get32le(s);
stbi__get32le(s);
}
}
}
return (void*)1;
}
[StructLayout(LayoutKind.Sequential)]
public struct stbi__bmp_data
{
public int bpp;
public int offset;
public int hsz;
public uint mr;
public uint mg;
public uint mb;
public uint ma;
public uint all_a;
public int extra_read;
}
}
}
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