From 735d94c63058423a2d7c7d626f3c2b14ec7445c0 Mon Sep 17 00:00:00 2001 From: Ivan Baravy Date: Sun, 27 May 2012 00:00:29 +0000 Subject: [PATCH] libimg: bmp 24/32bpp encoding git-svn-id: svn://kolibrios.org@2692 a494cfbc-eb01-0410-851d-a64ba20cac60 --- .../libraries/libs-dev/libimg/bmp/bmp.asm | 230 +++++++++++++++++- .../libraries/libs-dev/libimg/libimg.asm | 2 +- 2 files changed, 226 insertions(+), 6 deletions(-) diff --git a/programs/develop/libraries/libs-dev/libimg/bmp/bmp.asm b/programs/develop/libraries/libs-dev/libimg/bmp/bmp.asm index 09a896f39d..2fb71f30f8 100644 --- a/programs/develop/libraries/libs-dev/libimg/bmp/bmp.asm +++ b/programs/develop/libraries/libs-dev/libimg/bmp/bmp.asm @@ -98,7 +98,9 @@ img.decode.bmp.length_rest equ length_rest jz .normal cmp eax, 56 ; 0x38 je .normal - cmp eax, 108 ; 0x6C + cmp eax, 0x6C + je .normal + cmp eax, 0x7C jnz .error ; convert images with <= 8 bpp to 8bpp, other - to 32 bpp .normal: @@ -259,16 +261,234 @@ img.decode.bmp.length_rest equ length_rest endp ;;================================================================================================;; -proc img.encode.bmp _img, _p_length, _options ;///////////////////////////////////////////////////;; +proc img.encode.bmp _img, _common, _specific ;////////////////////////////////////////////////////;; ;;------------------------------------------------------------------------------------------------;; ;? Encode image into raw data in BMP format ;; ;;------------------------------------------------------------------------------------------------;; -;> _img = pointer to image ;; +;> [_img] = pointer to image ;; +;> [_common] = format independent options ;; +;> [_specific] = 0 / pointer to the structure of format specific options ;; ;;------------------------------------------------------------------------------------------------;; -;< eax = 0 (error) or pointer to encoded data ;; -;< _p_length = encoded data length ;; +;< eax = 0 / pointer to encoded data ;; +;< ecx = error code / the size of encoded data ;; ;;================================================================================================;; +locals + bytes_per_scanline rd 1 + encoded_file rd 1 + encoded_file_size rd 1 + encoded_data_size rd 1 +endl + mov ebx, [_img] + mov eax, [ebx + Image.Type] + cmp eax, Image.bpp24 + je .bpp24 + cmp eax, Image.bpp32 + je .bpp32 + mov ecx, LIBIMG_ERROR_BIT_DEPTH + jmp .error + + .bpp24: + mov eax, [ebx + Image.Width] + call img._.get_scanline_len + test eax, 0x03 + jz @f + and al, 0xfc + add eax, 4 + @@: + mov [bytes_per_scanline], eax + imul eax, [ebx + Image.Height] + mov [encoded_data_size], eax + add eax, 108 + 14 + mov [encoded_file_size], eax + stdcall [mem.alloc], eax + test eax, eax + jz .error + mov [encoded_file], eax + mov edi, eax + + mov word[edi], 'BM' + add edi, 2 + mov eax, [encoded_file_size] + stosd xor eax, eax + stosd + mov eax, 108 + 14 + stosd + mov eax, 108 + stosd + mov eax, [ebx + Image.Width] + stosd + mov eax, [ebx + Image.Height] + stosd + mov ax, 1 ; Planes + stosw + mov ax, 24 ; BitCount + stosw + mov eax, bmp.BI_RGB + stosd + mov eax, [encoded_data_size] + stosd + mov eax, 0x00000B13 + stosd + stosd + xor eax, eax + stosd + stosd + mov eax, 'BGRs' + stosd + xor eax, eax + stosd + stosd + stosd + stosd + stosd + stosd + stosd + stosd + stosd + stosd + stosd + stosd + mov eax, 2 + stosd + xor eax, eax + stosd + stosd + stosd + + mov esi, [ebx + Image.Data] + mov ecx, [ebx + Image.Width] + lea ecx, [ecx*3] + mov eax, [ebx + Image.Height] + mov edx, [bytes_per_scanline] + sub edx, ecx + mov dh, cl + and dh, 3 + shr ecx, 2 + push ecx + add edi, [encoded_data_size] + sub edi, [bytes_per_scanline] + @@: + pop ecx + push ecx + rep movsd + mov cl, dh + rep movsb + mov cl, dl + add edi, ecx + sub edi, [bytes_per_scanline] + sub edi, [bytes_per_scanline] + dec eax + jnz @b + pop ecx + mov eax, [encoded_file] + mov ecx, [encoded_file_size] + jmp .quit + + .bpp32: + mov eax, [ebx + Image.Width] + call img._.get_scanline_len + mov [bytes_per_scanline], eax + imul eax, [ebx + Image.Height] + mov [encoded_data_size], eax + add eax, 0x7C + 14 + mov [encoded_file_size], eax + stdcall [mem.alloc], eax + test eax, eax + jz .error + mov [encoded_file], eax + mov edi, eax + + mov word[edi], 'BM' + add edi, 2 + mov eax, [encoded_file_size] + stosd + xor eax, eax + stosd + mov eax, 0x7C + 14 + stosd + mov eax, 0x7C + stosd + mov eax, [ebx + Image.Width] + stosd + mov eax, [ebx + Image.Height] + stosd + mov ax, 1 ; Planes + stosw + mov ax, 32 ; BitCount + stosw + mov eax, 3 ; WTF? bmp.BI_RGB + stosd + mov eax, [encoded_data_size] + stosd + mov eax, 0x00000B13 + stosd + stosd + xor eax, eax + stosd + stosd + mov eax, 0xFF000000 + stosd + shr eax, 8 + stosd + shr eax, 8 + stosd +; shr eax, 8 + xor eax, eax + stosd + mov eax, 'BGRs' + stosd + xor eax, eax + stosd + stosd + stosd + stosd + stosd + stosd + stosd + stosd + stosd + stosd + stosd + stosd + mov eax, 2 + stosd + xor eax, eax + stosd + stosd + stosd + + mov esi, [ebx + Image.Data] + mov ecx, [ebx + Image.Width] + mov eax, [ebx + Image.Height] + add edi, [encoded_data_size] + sub edi, [bytes_per_scanline] + push ecx + .next_line: + pop ecx + push ecx + push eax + @@: + dec ecx + js @f + lodsd + rol eax, 8 + stosd + jmp @b + @@: + sub edi, [bytes_per_scanline] + sub edi, [bytes_per_scanline] + pop eax + dec eax + jnz .next_line + pop ecx + mov eax, [encoded_file] + mov ecx, [encoded_file_size] + jmp .quit + + .error: + xor eax, eax + .quit: ret endp diff --git a/programs/develop/libraries/libs-dev/libimg/libimg.asm b/programs/develop/libraries/libs-dev/libimg/libimg.asm index 6cb699f94c..3700659796 100644 --- a/programs/develop/libraries/libs-dev/libimg/libimg.asm +++ b/programs/develop/libraries/libs-dev/libimg/libimg.asm @@ -1879,7 +1879,7 @@ endp align 4 img.formats_table: - .bmp dd LIBIMG_FORMAT_ID_BMP, img.is.bmp, img.decode.bmp, img.encode.bmp, 0 + .bmp dd LIBIMG_FORMAT_ID_BMP, img.is.bmp, img.decode.bmp, img.encode.bmp, 1 + (1 SHL Image.bpp24) + (1 SHL Image.bpp32) .ico dd LIBIMG_FORMAT_ID_ICO, img.is.ico, img.decode.ico_cur, img.encode.ico, 0 .cur dd LIBIMG_FORMAT_ID_CUR, img.is.cur, img.decode.ico_cur, img.encode.cur, 0 .gif dd LIBIMG_FORMAT_ID_GIF, img.is.gif, img.decode.gif, img.encode.gif, 0