mirror of
https://github.com/KolibriOS/kolibrios.git
synced 2024-12-23 23:26:49 +03:00
537 lines
13 KiB
PHP
537 lines
13 KiB
PHP
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; ;;
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;; Copyright (C) KolibriOS team 2010-2015. All rights reserved. ;;
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;; Distributed under terms of the GNU General Public License ;;
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;; ;;
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;; VNC client for KolibriOS ;;
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;; ;;
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;; Written by hidnplayr@kolibrios.org ;;
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;; ;;
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;; GNU GENERAL PUBLIC LICENSE ;;
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;; Version 2, June 1991 ;;
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;; ;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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deflate_callback:
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mov eax, [deflate_length]
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mov ecx, [esp+8]
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mov [ecx], eax
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mov eax, [deflate_buffer]
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ret 8
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encoding_ZRLE:
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DEBUGF 2, "ZRLE\n"
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@@:
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lea eax, [esi+4]
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cmp [datapointer], eax
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jae @f
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call read_data.more
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jmp @b
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@@:
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lodsd
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bswap eax ; number of packed bytes
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DEBUGF 2, "packed length=%u bytes\n", eax
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@@:
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push eax
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add eax, esi
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cmp [datapointer], eax
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jae @f
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call read_data.more
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pop eax
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jmp @b
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@@:
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pop ecx
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lea eax, [esi+ecx]
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push eax ; end of data ptr
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cmp [deflate_buffer], 0 ; first chunk of the stream?
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jne @f
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lodsw ; load zlib header
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cmp ax, 0x9c78 ; default compression?
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jne .deflate_fail
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sub ecx, 2 ; subtract 2 byte header
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; invoke deflate_init
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; mov [deflate_str], eax
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@@:
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sub ecx, 4 ; subtract 4 byte check value trailer
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mov [deflate_buffer], esi
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mov [deflate_length], ecx
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; mov eax, [deflate_str]
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push eax ; allocate place on stack
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invoke deflate_unpack2, deflate_callback, 0, esp ; unpack the data
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pop ecx ; get size in ecx
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test eax, eax
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jz .deflate_fail
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push eax
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DEBUGF 2, "%u bytes unpacked succesfully\n", ecx
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test ecx, ecx
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jz .fail
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mov esi, eax
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mov [subrectangle.x], 0
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mov [subrectangle.y], 0
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.tile:
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mov eax, [rectangle.width]
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sub eax, [subrectangle.x]
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cmp eax, 64
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jb @f
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mov eax, 64
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@@:
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mov [subrectangle.width], eax
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mov edx, [rectangle.height]
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sub edx, [subrectangle.y]
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cmp edx, 64
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jb @f
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mov edx, 64
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@@:
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mov [subrectangle.height], edx
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DEBUGF 1, "Subrectangle: x=%u y=%u width=%u height=%u ", \
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[subrectangle.x], [subrectangle.y], [subrectangle.width], [subrectangle.height]
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; Calculate first pixel pos
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mov eax, [rectangle.y]
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add eax, [subrectangle.y]
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movzx ebx, [screen.width]
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mul ebx
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add eax, [rectangle.x]
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add eax, [subrectangle.x]
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lea edi, [framebuffer+eax*3]
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; Calculate offset between two rows of pixels
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movzx eax, [screen.width]
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sub eax, [subrectangle.width]
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lea ebp, [eax*3]
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mov edx, [subrectangle.height]
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;;;;
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lodsb ; subencoding type
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DEBUGF 1, "encoding=%u\n", al
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test al, al
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jz .raw
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cmp al, 1
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je .solid
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cmp al, 16
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jbe .palette_packed
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cmp al, 127
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je .reuse_palette
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jb .invalid
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and al, 0x7f
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jz .plain_rle
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cmp al, 1
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je .prle_reuse_palette
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; Palette Run Length Encoded tile
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mov [palettesize], al
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call create_palette
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.prle_reuse_palette:
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DEBUGF 1, "Pallete RLE tile\n"
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mov eax, 1
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.prle_line:
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mov ebx, [subrectangle.width]
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.prle_pixel:
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dec eax
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jz .prle_reload
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mov word[edi], cx
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rol ecx, 16
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add edi, 2
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mov byte[edi], cl
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rol ecx, 16
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inc edi
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dec ebx
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jnz .prle_pixel
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add edi, ebp
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dec edx
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jnz .prle_line
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jmp .next_tile
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.prle_reload:
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;;;
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; load palette index and get color from palette
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xor eax, eax
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lodsb
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push ebx
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mov bl, al
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and al, 0x7f
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mov ecx, [palette+eax*4]
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; run length follows?
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xor eax, eax
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test bl, 0x80
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pop ebx
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jz .plength_ok
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;;;
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; load runlength
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push ebx
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xor eax, eax
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xor ebx, ebx
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@@:
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lodsb
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cmp al, 255
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jne @f
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add ebx, eax
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jmp @b
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@@:
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add eax, ebx
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pop ebx
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.plength_ok:
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add eax, 2
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jmp .prle_pixel
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; Run Length Encoded tile
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.plain_rle:
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DEBUGF 1, "Plain RLE tile\n"
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mov eax, 1
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.rle_line:
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mov ebx, [subrectangle.width]
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.rle_pixel:
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dec eax
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jz .rle_reload
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mov word[edi], cx
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rol ecx, 16
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add edi, 2
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mov byte[edi], cl
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rol ecx, 16
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inc edi
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dec ebx
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jnz .rle_pixel
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add edi, ebp
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dec edx
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jnz .rle_line
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jmp .next_tile
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.rle_reload:
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; TODO: check for buffer underrun
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; load pixel value
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call load_cpixel
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mov ecx, eax
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; load length
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xor eax, eax
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push ebx
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xor ebx, ebx
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@@:
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lodsb
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cmp al, 255
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jne @f
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add ebx, eax
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jmp @b
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@@:
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add eax, ebx
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add eax, 2
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pop ebx
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jmp .rle_pixel
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.reuse_palette:
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cmp [palettesize], 1
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jne .reuse_palette_
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mov ecx, [palette]
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mov eax, ecx
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shr eax, 16
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jmp .solid_line
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; Palette packed tile
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.palette_packed:
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DEBUGF 1, "Palette packed tile\n"
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mov [palettesize], al
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call create_palette
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.reuse_palette_:
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cmp [palettesize], 2
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je .palette_1bit
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cmp [palettesize], 4
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jbe .palette_2bit
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jmp .palette_4bit
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.palette_1bit:
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DEBUGF 1, "1-bit palette\n"
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.palette_1bit_line:
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mov ebx, [subrectangle.width]
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.palette_1bit_byte:
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lodsb
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rol al, 1
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mov ecx, eax
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and eax, 0x1
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mov eax, [palette+4*eax]
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stosw
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shr eax, 16
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stosb
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dec ebx
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jz .palette_1bit_next_line
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rol cl, 1
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mov eax, ecx
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and eax, 0x1
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mov eax, [palette+4*eax]
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stosw
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shr eax, 16
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stosb
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dec ebx
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jz .palette_1bit_next_line
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rol cl, 1
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mov eax, ecx
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and eax, 0x1
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mov eax, [palette+4*eax]
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stosw
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shr eax, 16
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stosb
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dec ebx
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jz .palette_1bit_next_line
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rol cl, 1
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mov eax, ecx
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and eax, 0x1
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mov eax, [palette+4*eax]
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stosw
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shr eax, 16
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stosb
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dec ebx
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jz .palette_1bit_next_line
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rol cl, 1
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mov eax, ecx
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and eax, 0x1
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mov eax, [palette+4*eax]
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stosw
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shr eax, 16
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stosb
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dec ebx
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jz .palette_1bit_next_line
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rol cl, 1
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mov eax, ecx
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and eax, 0x1
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mov eax, [palette+4*eax]
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stosw
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shr eax, 16
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stosb
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dec ebx
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jz .palette_1bit_next_line
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rol cl, 1
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mov eax, ecx
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and eax, 0x1
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mov eax, [palette+4*eax]
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stosw
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shr eax, 16
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stosb
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dec ebx
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jz .palette_1bit_next_line
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rol cl, 1
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and ecx, 0x1
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mov eax, [palette+4*ecx]
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stosw
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shr eax, 16
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stosb
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dec ebx
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jnz .palette_1bit_byte
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.palette_1bit_next_line:
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add edi, ebp
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dec edx
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jnz .palette_1bit_line
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jmp .next_tile
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.palette_2bit:
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DEBUGF 1, "2-bit palette\n"
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.palette_2bit_line:
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mov ebx, [subrectangle.width]
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.palette_2bit_byte:
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lodsb
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mov ecx, eax
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and eax, 0xc0
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shr eax, 4
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mov eax, [palette+eax]
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stosw
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shr eax, 16
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stosb
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dec ebx
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jz .palette_2bit_next_line
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mov eax, ecx
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and eax, 0x30
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shr eax, 2
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mov eax, [palette+eax]
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stosw
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shr eax, 16
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stosb
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dec ebx
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jz .palette_2bit_next_line
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mov eax, ecx
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and eax, 0x0c
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mov eax, [palette+eax]
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stosw
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shr eax, 16
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stosb
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dec ebx
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jz .palette_2bit_next_line
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and ecx, 0x03
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mov eax, [palette+4*ecx]
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stosw
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shr eax, 16
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stosb
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dec ebx
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jnz .palette_2bit_byte
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.palette_2bit_next_line:
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add edi, ebp
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dec edx
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jnz .palette_2bit_line
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jmp .next_tile
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.palette_4bit:
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DEBUGF 1, "4-bit palette\n"
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.palette_4bit_line:
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mov ebx, [subrectangle.width]
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.palette_4bit_byte:
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lodsb
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mov cl, al
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and eax, 0xf0
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shr eax, 2
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mov eax, [palette+eax]
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stosw
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shr eax, 16
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stosb
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dec ebx
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jz .palette_4bit_next_line
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and ecx, 0x0f
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shl ecx, 2
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mov eax, [palette+ecx]
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stosw
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shr eax, 16
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stosb
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dec ebx
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jnz .palette_4bit_byte
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.palette_4bit_next_line:
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add edi, ebp
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dec edx
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jnz .palette_4bit_line
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jmp .next_tile
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; RAW tile
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.raw:
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push edx
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mov eax, [subrectangle.width]
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mul [subrectangle.height]
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lea eax, [eax*3]
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pop edx
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; TODO: check for buffer underrun
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DEBUGF 1, "RAW tile\n"
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.raw_line:
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mov ebx, [subrectangle.width]
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.raw_pixel:
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call load_cpixel
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stosw
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shr eax, 16
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stosb
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dec ebx
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jnz .raw_pixel
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add edi, ebp
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dec edx
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jnz .raw_line
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jmp .next_tile
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; Single color tile
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.solid:
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DEBUGF 1, "Solid tile\n"
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; TODO: check for buffer underrun
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call load_cpixel
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mov ecx, eax
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shr ecx, 16
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mov [palettesize], 1
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mov [palette], eax
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.solid_line:
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mov ebx, [subrectangle.width]
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.solid_pixel:
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stosw
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mov [edi], cl
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inc edi
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dec ebx
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jnz .solid_pixel
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add edi, ebp
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dec edx
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jnz .solid_line
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; jmp .next_tile
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; Go to the next tile
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.next_tile:
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mov eax, [subrectangle.x]
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add eax, 64
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cmp eax, [rectangle.width]
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jae .next_row
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mov [subrectangle.x], eax
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jmp .tile
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.next_row:
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mov [subrectangle.x], 0
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mov eax, [subrectangle.y]
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add eax, 64
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cmp eax, [rectangle.height]
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jae .done
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mov [subrectangle.y], eax
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jmp .tile
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.done:
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DEBUGF 1, "ZRLE complete!\n"
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pop ecx
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mcall 68, 13 ; free the unpacked data
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pop esi
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jmp next_rectangle
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.invalid:
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DEBUGF 2, "Invalid subencoding type!\n"
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.fail:
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DEBUGF 2, "ZRLE failed!\n"
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pop ecx
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mcall 68, 13 ; free unpacked data
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pop esi
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jmp next_rectangle
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.deflate_fail:
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DEBUGF 2,"Unpacking failed!\n"
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pop esi
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jmp next_rectangle |