445 lines
12 KiB
C
445 lines
12 KiB
C
/**
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* FreeRDP: A Remote Desktop Protocol Implementation
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* Interleaved RLE Bitmap Codec
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*
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* Copyright 2014 Marc-Andre Moreau <marcandre.moreau@gmail.com>
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <freerdp/codec/interleaved.h>
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#include <freerdp/log.h>
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#define TAG FREERDP_TAG("codec")
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/*
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RLE Compressed Bitmap Stream (RLE_BITMAP_STREAM)
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http://msdn.microsoft.com/en-us/library/cc240895%28v=prot.10%29.aspx
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pseudo-code
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http://msdn.microsoft.com/en-us/library/dd240593%28v=prot.10%29.aspx
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*/
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#define REGULAR_BG_RUN 0x00
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#define MEGA_MEGA_BG_RUN 0xF0
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#define REGULAR_FG_RUN 0x01
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#define MEGA_MEGA_FG_RUN 0xF1
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#define LITE_SET_FG_FG_RUN 0x0C
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#define MEGA_MEGA_SET_FG_RUN 0xF6
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#define LITE_DITHERED_RUN 0x0E
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#define MEGA_MEGA_DITHERED_RUN 0xF8
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#define REGULAR_COLOR_RUN 0x03
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#define MEGA_MEGA_COLOR_RUN 0xF3
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#define REGULAR_FGBG_IMAGE 0x02
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#define MEGA_MEGA_FGBG_IMAGE 0xF2
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#define LITE_SET_FG_FGBG_IMAGE 0x0D
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#define MEGA_MEGA_SET_FGBG_IMAGE 0xF7
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#define REGULAR_COLOR_IMAGE 0x04
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#define MEGA_MEGA_COLOR_IMAGE 0xF4
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#define SPECIAL_FGBG_1 0xF9
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#define SPECIAL_FGBG_2 0xFA
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#define SPECIAL_WHITE 0xFD
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#define SPECIAL_BLACK 0xFE
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#define BLACK_PIXEL 0x000000
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#define WHITE_PIXEL 0xFFFFFF
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typedef UINT32 PIXEL;
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static const BYTE g_MaskBit0 = 0x01; /* Least significant bit */
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static const BYTE g_MaskBit1 = 0x02;
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static const BYTE g_MaskBit2 = 0x04;
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static const BYTE g_MaskBit3 = 0x08;
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static const BYTE g_MaskBit4 = 0x10;
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static const BYTE g_MaskBit5 = 0x20;
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static const BYTE g_MaskBit6 = 0x40;
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static const BYTE g_MaskBit7 = 0x80; /* Most significant bit */
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static const BYTE g_MaskSpecialFgBg1 = 0x03;
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static const BYTE g_MaskSpecialFgBg2 = 0x05;
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static const BYTE g_MaskRegularRunLength = 0x1F;
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static const BYTE g_MaskLiteRunLength = 0x0F;
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/**
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* Reads the supplied order header and extracts the compression
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* order code ID.
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*/
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static INLINE UINT32 ExtractCodeId(BYTE bOrderHdr)
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{
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if ((bOrderHdr & 0xC0U) != 0xC0U) {
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/* REGULAR orders
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* (000x xxxx, 001x xxxx, 010x xxxx, 011x xxxx, 100x xxxx)
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*/
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return bOrderHdr >> 5;
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}
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else if ((bOrderHdr & 0xF0U) == 0xF0U) {
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/* MEGA and SPECIAL orders (0xF*) */
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return bOrderHdr;
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}
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else {
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/* LITE orders
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* 1100 xxxx, 1101 xxxx, 1110 xxxx)
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*/
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return bOrderHdr >> 4;
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}
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}
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/**
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* Extract the run length of a compression order.
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*/
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static INLINE UINT32 ExtractRunLength(UINT32 code, BYTE* pbOrderHdr, UINT32* advance)
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{
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UINT32 runLength;
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UINT32 ladvance;
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ladvance = 1;
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runLength = 0;
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switch (code)
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{
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case REGULAR_FGBG_IMAGE:
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runLength = (*pbOrderHdr) & g_MaskRegularRunLength;
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if (runLength == 0)
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{
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runLength = (*(pbOrderHdr + 1)) + 1;
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ladvance += 1;
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}
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else
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{
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runLength = runLength * 8;
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}
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break;
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case LITE_SET_FG_FGBG_IMAGE:
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runLength = (*pbOrderHdr) & g_MaskLiteRunLength;
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if (runLength == 0)
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{
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runLength = (*(pbOrderHdr + 1)) + 1;
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ladvance += 1;
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}
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else
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{
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runLength = runLength * 8;
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}
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break;
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case REGULAR_BG_RUN:
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case REGULAR_FG_RUN:
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case REGULAR_COLOR_RUN:
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case REGULAR_COLOR_IMAGE:
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runLength = (*pbOrderHdr) & g_MaskRegularRunLength;
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if (runLength == 0)
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{
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/* An extended (MEGA) run. */
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runLength = (*(pbOrderHdr + 1)) + 32;
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ladvance += 1;
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}
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break;
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case LITE_SET_FG_FG_RUN:
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case LITE_DITHERED_RUN:
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runLength = (*pbOrderHdr) & g_MaskLiteRunLength;
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if (runLength == 0)
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{
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/* An extended (MEGA) run. */
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runLength = (*(pbOrderHdr + 1)) + 16;
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ladvance += 1;
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}
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break;
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case MEGA_MEGA_BG_RUN:
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case MEGA_MEGA_FG_RUN:
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case MEGA_MEGA_SET_FG_RUN:
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case MEGA_MEGA_DITHERED_RUN:
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case MEGA_MEGA_COLOR_RUN:
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case MEGA_MEGA_FGBG_IMAGE:
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case MEGA_MEGA_SET_FGBG_IMAGE:
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case MEGA_MEGA_COLOR_IMAGE:
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runLength = ((UINT16) pbOrderHdr[1]) | ((UINT16) (pbOrderHdr[2] << 8));
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ladvance += 2;
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break;
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}
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*advance = ladvance;
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return runLength;
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}
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#define UNROLL_COUNT 4
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#define UNROLL(_exp) do { _exp _exp _exp _exp } while (0)
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#undef DESTWRITEPIXEL
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#undef DESTREADPIXEL
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#undef SRCREADPIXEL
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#undef DESTNEXTPIXEL
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#undef SRCNEXTPIXEL
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#undef WRITEFGBGIMAGE
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#undef WRITEFIRSTLINEFGBGIMAGE
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#undef RLEDECOMPRESS
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#undef RLEEXTRA
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#define DESTWRITEPIXEL(_buf, _pix) (_buf)[0] = (BYTE)(_pix)
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#define DESTREADPIXEL(_pix, _buf) _pix = (_buf)[0]
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#define SRCREADPIXEL(_pix, _buf) _pix = (_buf)[0]
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#define DESTNEXTPIXEL(_buf) _buf += 1
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#define SRCNEXTPIXEL(_buf) _buf += 1
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#define WRITEFGBGIMAGE WriteFgBgImage8to8
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#define WRITEFIRSTLINEFGBGIMAGE WriteFirstLineFgBgImage8to8
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#define RLEDECOMPRESS RleDecompress8to8
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#define RLEEXTRA
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#include "include/bitmap.c"
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#undef DESTWRITEPIXEL
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#undef DESTREADPIXEL
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#undef SRCREADPIXEL
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#undef DESTNEXTPIXEL
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#undef SRCNEXTPIXEL
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#undef WRITEFGBGIMAGE
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#undef WRITEFIRSTLINEFGBGIMAGE
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#undef RLEDECOMPRESS
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#undef RLEEXTRA
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#define DESTWRITEPIXEL(_buf, _pix) ((UINT16*)(_buf))[0] = (UINT16)(_pix)
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#define DESTREADPIXEL(_pix, _buf) _pix = ((UINT16*)(_buf))[0]
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#ifdef HAVE_ALIGNED_REQUIRED
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#define SRCREADPIXEL(_pix, _buf) _pix = (_buf)[0] | ((_buf)[1] << 8)
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#else
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#define SRCREADPIXEL(_pix, _buf) _pix = ((UINT16*)(_buf))[0]
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#endif
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#define DESTNEXTPIXEL(_buf) _buf += 2
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#define SRCNEXTPIXEL(_buf) _buf += 2
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#define WRITEFGBGIMAGE WriteFgBgImage16to16
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#define WRITEFIRSTLINEFGBGIMAGE WriteFirstLineFgBgImage16to16
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#define RLEDECOMPRESS RleDecompress16to16
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#define RLEEXTRA
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#include "include/bitmap.c"
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#undef DESTWRITEPIXEL
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#undef DESTREADPIXEL
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#undef SRCREADPIXEL
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#undef DESTNEXTPIXEL
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#undef SRCNEXTPIXEL
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#undef WRITEFGBGIMAGE
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#undef WRITEFIRSTLINEFGBGIMAGE
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#undef RLEDECOMPRESS
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#undef RLEEXTRA
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#define DESTWRITEPIXEL(_buf, _pix) do { (_buf)[0] = (BYTE)(_pix); \
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(_buf)[1] = (BYTE)((_pix) >> 8); (_buf)[2] = (BYTE)((_pix) >> 16); } while (0)
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#define DESTREADPIXEL(_pix, _buf) _pix = (_buf)[0] | ((_buf)[1] << 8) | \
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((_buf)[2] << 16)
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#define SRCREADPIXEL(_pix, _buf) _pix = (_buf)[0] | ((_buf)[1] << 8) | \
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((_buf)[2] << 16)
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#define DESTNEXTPIXEL(_buf) _buf += 3
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#define SRCNEXTPIXEL(_buf) _buf += 3
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#define WRITEFGBGIMAGE WriteFgBgImage24to24
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#define WRITEFIRSTLINEFGBGIMAGE WriteFirstLineFgBgImage24to24
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#define RLEDECOMPRESS RleDecompress24to24
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#define RLEEXTRA
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#include "include/bitmap.c"
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int interleaved_decompress(BITMAP_INTERLEAVED_CONTEXT* interleaved, BYTE* pSrcData, UINT32 SrcSize, int bpp,
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BYTE** ppDstData, DWORD DstFormat, int nDstStep, int nXDst, int nYDst, int nWidth, int nHeight, BYTE* palette)
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{
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int status;
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BOOL vFlip;
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int scanline;
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BYTE* pDstData;
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UINT32 SrcFormat;
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UINT32 BufferSize;
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int dstBitsPerPixel;
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int dstBytesPerPixel;
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pDstData = *ppDstData;
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dstBitsPerPixel = FREERDP_PIXEL_FORMAT_DEPTH(DstFormat);
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dstBytesPerPixel = (FREERDP_PIXEL_FORMAT_BPP(DstFormat) / 8);
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vFlip = FREERDP_PIXEL_FORMAT_FLIP(DstFormat) ? TRUE : FALSE;
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if (!interleaved)
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return -1;
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if (nDstStep < 0)
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nDstStep = nWidth * dstBytesPerPixel;
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if (bpp == 24)
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{
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scanline = nWidth * 3;
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BufferSize = scanline * nHeight;
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SrcFormat = PIXEL_FORMAT_RGB24_VF;
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#if 0
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if ((SrcFormat == DstFormat) && !nXDst && !nYDst && (scanline == nDstStep))
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{
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RleDecompress24to24(pSrcData, SrcSize, pDstData, scanline, nWidth, nHeight);
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return 1;
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}
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#endif
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if (BufferSize > interleaved->TempSize)
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{
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interleaved->TempBuffer = _aligned_realloc(interleaved->TempBuffer, BufferSize, 16);
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interleaved->TempSize = BufferSize;
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}
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if (!interleaved->TempBuffer)
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return -1;
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RleDecompress24to24(pSrcData, SrcSize, interleaved->TempBuffer, scanline, nWidth, nHeight);
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status = freerdp_image_copy(pDstData, DstFormat, nDstStep, nXDst, nYDst,
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nWidth, nHeight, interleaved->TempBuffer, SrcFormat, scanline, 0, 0, palette);
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}
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else if ((bpp == 16) || (bpp == 15))
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{
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scanline = nWidth * 2;
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BufferSize = scanline * nHeight;
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SrcFormat = (bpp == 16) ? PIXEL_FORMAT_RGB16_VF : PIXEL_FORMAT_RGB15_VF;
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#if 0
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if ((SrcFormat == DstFormat) && !nXDst && !nYDst && (scanline == nDstStep))
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{
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RleDecompress16to16(pSrcData, SrcSize, pDstData, scanline, nWidth, nHeight);
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return 1;
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}
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#endif
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if (BufferSize > interleaved->TempSize)
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{
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interleaved->TempBuffer = _aligned_realloc(interleaved->TempBuffer, BufferSize, 16);
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interleaved->TempSize = BufferSize;
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}
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if (!interleaved->TempBuffer)
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return -1;
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RleDecompress16to16(pSrcData, SrcSize, interleaved->TempBuffer, scanline, nWidth, nHeight);
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status = freerdp_image_copy(pDstData, DstFormat, nDstStep, nXDst, nYDst,
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nWidth, nHeight, interleaved->TempBuffer, SrcFormat, scanline, 0, 0, palette);
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}
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else if (bpp == 8)
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{
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scanline = nWidth;
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BufferSize = scanline * nHeight;
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SrcFormat = PIXEL_FORMAT_RGB8_VF;
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#if 0
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if ((SrcFormat == DstFormat) && !nXDst && !nYDst && (scanline == nDstStep))
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{
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RleDecompress8to8(pSrcData, SrcSize, pDstData, scanline, nWidth, nHeight);
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return 1;
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}
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#endif
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if (BufferSize > interleaved->TempSize)
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{
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interleaved->TempBuffer = _aligned_realloc(interleaved->TempBuffer, BufferSize, 16);
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interleaved->TempSize = BufferSize;
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}
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if (!interleaved->TempBuffer)
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return -1;
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RleDecompress8to8(pSrcData, SrcSize, interleaved->TempBuffer, scanline, nWidth, nHeight);
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status = freerdp_image_copy(pDstData, DstFormat, nDstStep, nXDst, nYDst,
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nWidth, nHeight, interleaved->TempBuffer, SrcFormat, scanline, 0, 0, palette);
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}
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else
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{
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return -1;
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}
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return 1;
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}
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int interleaved_compress(BITMAP_INTERLEAVED_CONTEXT* interleaved, BYTE* pDstData, UINT32* pDstSize,
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int nWidth, int nHeight, BYTE* pSrcData, DWORD SrcFormat, int nSrcStep, int nXSrc, int nYSrc, BYTE* palette, int bpp)
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{
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int status;
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wStream* s;
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UINT32 DstFormat = 0;
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int maxSize = 64 * 64 * 4;
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if (nWidth % 4)
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{
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WLog_ERR(TAG, "interleaved_compress: width is not a multiple of 4");
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return -1;
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}
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if ((nWidth > 64) || (nHeight > 64))
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{
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WLog_ERR(TAG, "interleaved_compress: width (%d) or height (%d) is greater than 64", nWidth, nHeight);
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return -1;
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}
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if (bpp == 24)
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DstFormat = PIXEL_FORMAT_XRGB32;
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else if (bpp == 16)
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DstFormat = PIXEL_FORMAT_RGB16;
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else if (bpp == 15)
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DstFormat = PIXEL_FORMAT_RGB15;
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else if (bpp == 8)
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DstFormat = PIXEL_FORMAT_RGB8;
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if (!DstFormat)
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return -1;
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status = freerdp_image_copy(interleaved->TempBuffer, DstFormat, -1, 0, 0, nWidth, nHeight,
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pSrcData, SrcFormat, nSrcStep, nXSrc, nYSrc, palette);
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s = Stream_New(pDstData, maxSize);
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if (!s)
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return -1;
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status = freerdp_bitmap_compress((char*) interleaved->TempBuffer, nWidth, nHeight,
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s, bpp, maxSize, nHeight - 1, interleaved->bts, 0);
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Stream_SealLength(s);
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*pDstSize = (UINT32) Stream_Length(s);
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Stream_Free(s, FALSE);
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return status;
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}
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int bitmap_interleaved_context_reset(BITMAP_INTERLEAVED_CONTEXT* interleaved)
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{
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return 1;
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}
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BITMAP_INTERLEAVED_CONTEXT* bitmap_interleaved_context_new(BOOL Compressor)
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{
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BITMAP_INTERLEAVED_CONTEXT* interleaved;
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interleaved = (BITMAP_INTERLEAVED_CONTEXT*) calloc(1, sizeof(BITMAP_INTERLEAVED_CONTEXT));
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if (interleaved)
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{
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interleaved->TempSize = 64 * 64 * 4;
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interleaved->TempBuffer = _aligned_malloc(interleaved->TempSize, 16);
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interleaved->bts = Stream_New(NULL, interleaved->TempSize);
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}
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return interleaved;
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}
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void bitmap_interleaved_context_free(BITMAP_INTERLEAVED_CONTEXT* interleaved)
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{
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if (!interleaved)
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return;
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_aligned_free(interleaved->TempBuffer);
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Stream_Free(interleaved->bts, TRUE);
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free(interleaved);
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}
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