forked from len0rd/rockbox
Move the monolithic jpeg viewer into its own subdirectory and split it into three (for now - maybe it should be split further) files - jpeg.c (the main plugin/viewer parts), jpeg_decoder.c (the actual decoder) and. for colour targets only, yuv2rgb.c. The intention of this commit is as a first step towards abstracting this viewer into a reusable jpeg decoder and a multi-format image viewer.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@18853 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Dave Chapman
parent
b0b3f0339a
commit
76596deaf1
11 changed files with 3706 additions and 3436 deletions
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@ -24,11 +24,6 @@ viewer.c
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lamp.c
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lamp.c
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#endif /* HAVE_BACKLIGHT */
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#endif /* HAVE_BACKLIGHT */
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#ifdef OLYMPUS_MROBE_500
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/* remove these once the plugins before it are compileable */
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jpeg.c
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#endif
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#ifndef OLYMPUS_MROBE_500
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#ifndef OLYMPUS_MROBE_500
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#if (CONFIG_CODEC == SWCODEC) || !defined(SIMULATOR)
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#if (CONFIG_CODEC == SWCODEC) || !defined(SIMULATOR)
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@ -62,7 +57,6 @@ ppmviewer.c
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/* Plugins needing the grayscale lib on low-depth LCDs */
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/* Plugins needing the grayscale lib on low-depth LCDs */
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fire.c
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fire.c
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jpeg.c
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mandelbrot.c
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mandelbrot.c
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plasma.c
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plasma.c
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@ -17,6 +17,7 @@ rockboy
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/* For all targets with a bitmap display */
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/* For all targets with a bitmap display */
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#ifdef HAVE_LCD_BITMAP
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#ifdef HAVE_LCD_BITMAP
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chessbox
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chessbox
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jpeg
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sudoku
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sudoku
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reversi
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reversi
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#ifndef OLYMPUS_MROBE_500
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#ifndef OLYMPUS_MROBE_500
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3430
apps/plugins/jpeg.c
3430
apps/plugins/jpeg.c
File diff suppressed because it is too large
Load diff
75
apps/plugins/jpeg/Makefile
Normal file
75
apps/plugins/jpeg/Makefile
Normal file
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@ -0,0 +1,75 @@
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# __________ __ ___.
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# Open \______ \ ____ ____ | | _\_ |__ _______ ___
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# Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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# Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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# Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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# \/ \/ \/ \/ \/
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# $Id$
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#
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INCLUDES = -I$(APPSDIR) -I.. -I. $(TARGET_INC) -I$(FIRMDIR)/include -I$(FIRMDIR)/export \
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-I$(FIRMDIR)/common -I$(FIRMDIR)/drivers -I$(OUTDIR) -I$(BUILDDIR) \
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-I$(BUILDDIR)/pluginbitmaps -I$(APPSDIR)/plugins/lib
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CFLAGS = $(INCLUDES) $(GCCOPTS) $(TARGET) $(EXTRA_DEFINES) \
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-DTARGET_ID=$(TARGET_ID) -DMEM=${MEMORYSIZE} -DPLUGIN
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ifdef APPEXTRA
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INCLUDES += $(patsubst %,-I$(APPSDIR)/%,$(subst :, ,$(APPEXTRA)))
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endif
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LINKFILE := $(OBJDIR)/link.lds
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DEPFILE = $(OBJDIR)/dep-jpeg
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# This sets up 'SRC' based on the files mentioned in SOURCES
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include $(TOOLSDIR)/makesrc.inc
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SOURCES = $(SRC)
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OBJS := $(SRC:%.c=$(OBJDIR)/%.o)
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DIRS = .
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ifndef SIMVER
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LDS := ../plugin.lds
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OUTPUT = $(OUTDIR)/jpeg.rock
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else ## simulators
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OUTPUT = $(OUTDIR)/jpeg.rock
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endif
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all: $(OUTPUT)
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ifndef SIMVER
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$(OBJDIR)/jpeg.elf: $(OBJS) $(LINKFILE) $(BITMAPLIBS)
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$(call PRINTS,LD $(@F))$(CC) $(CFLAGS) -o $@ $(OBJS) -L$(BUILDDIR) -lplugin -lgcc \
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$(LINKBITMAPS) -T$(LINKFILE) -Wl,--gc-sections -Wl,-Map,$(OBJDIR)/jpeg.map
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$(OUTPUT): $(OBJDIR)/jpeg.elf
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$(call PRINTS,OBJCOPY $(@F))$(OC) -O binary $< $@
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else
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###################################################
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# This is the SDL simulator version
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$(OUTPUT): $(OBJS)
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$(call PRINTS,LD $(@F))$(CC) $(CFLAGS) $(SHARED_FLAG) $(OBJS) -L$(BUILDDIR) -lplugin $(LINKBITMAPS) -o $@
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ifeq ($(findstring CYGWIN,$(UNAME)),CYGWIN)
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# 'x' must be kept or you'll have "Win32 error 5"
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# $ fgrep 5 /usr/include/w32api/winerror.h | head -1
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# #define ERROR_ACCESS_DENIED 5L
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else
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@chmod -x $@
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endif
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endif # end of simulator section
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include $(TOOLSDIR)/make.inc
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# MEMORYSIZE should be passed on to this makefile with the chosen memory size
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# given in number of MB
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$(LINKFILE): $(LDS)
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$(call PRINTS,build $(@F))cat $< | $(CC) -DMEMORYSIZE=$(MEMORYSIZE) $(INCLUDES) $(TARGET) \
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$(DEFINES) -E -P - >$@
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clean:
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$(call PRINTS,cleaning jpeg)rm -rf $(OBJDIR)/jpeg
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$(SILENT)rm -f $(OBJDIR)/jpeg.* $(DEPFILE)
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-include $(DEPFILE)
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5
apps/plugins/jpeg/SOURCES
Normal file
5
apps/plugins/jpeg/SOURCES
Normal file
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@ -0,0 +1,5 @@
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jpeg.c
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jpeg_decoder.c
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#ifdef HAVE_LCD_COLOR
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yuv2rgb.c
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#endif
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1235
apps/plugins/jpeg/jpeg.c
Normal file
1235
apps/plugins/jpeg/jpeg.c
Normal file
File diff suppressed because it is too large
Load diff
256
apps/plugins/jpeg/jpeg.h
Normal file
256
apps/plugins/jpeg/jpeg.h
Normal file
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@ -0,0 +1,256 @@
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/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* JPEG image viewer
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* (This is a real mess if it has to be coded in one single C file)
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*
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* File scrolling addition (C) 2005 Alexander Spyridakis
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* Copyright (C) 2004 Jörg Hohensohn aka [IDC]Dragon
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* Heavily borrowed from the IJG implementation (C) Thomas G. Lane
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* Small & fast downscaling IDCT (C) 2002 by Guido Vollbeding JPEGclub.org
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#ifndef _JPEG_JPEG_H
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#define _JPEG_JPEG_H
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#include "plugin.h"
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/* variable button definitions */
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#if CONFIG_KEYPAD == RECORDER_PAD
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#define JPEG_ZOOM_IN BUTTON_PLAY
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#define JPEG_ZOOM_OUT BUTTON_ON
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#define JPEG_UP BUTTON_UP
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#define JPEG_DOWN BUTTON_DOWN
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#define JPEG_LEFT BUTTON_LEFT
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#define JPEG_RIGHT BUTTON_RIGHT
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#define JPEG_NEXT BUTTON_F3
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#define JPEG_PREVIOUS BUTTON_F2
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#define JPEG_MENU BUTTON_OFF
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#elif CONFIG_KEYPAD == ARCHOS_AV300_PAD
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#define JPEG_ZOOM_IN BUTTON_SELECT
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#define JPEG_ZOOM_OUT BUTTON_ON
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#define JPEG_UP BUTTON_UP
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#define JPEG_DOWN BUTTON_DOWN
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#define JPEG_LEFT BUTTON_LEFT
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#define JPEG_RIGHT BUTTON_RIGHT
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#define JPEG_NEXT BUTTON_F3
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#define JPEG_PREVIOUS BUTTON_F2
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#define JPEG_MENU BUTTON_OFF
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#elif CONFIG_KEYPAD == ONDIO_PAD
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#define JPEG_ZOOM_PRE BUTTON_MENU
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#define JPEG_ZOOM_IN (BUTTON_MENU | BUTTON_REL)
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#define JPEG_ZOOM_OUT (BUTTON_MENU | BUTTON_DOWN)
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#define JPEG_UP BUTTON_UP
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#define JPEG_DOWN BUTTON_DOWN
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#define JPEG_LEFT BUTTON_LEFT
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#define JPEG_RIGHT BUTTON_RIGHT
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#define JPEG_NEXT (BUTTON_MENU | BUTTON_RIGHT)
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#define JPEG_PREVIOUS (BUTTON_MENU | BUTTON_LEFT)
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#define JPEG_MENU BUTTON_OFF
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#elif (CONFIG_KEYPAD == IRIVER_H100_PAD) || \
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(CONFIG_KEYPAD == IRIVER_H300_PAD)
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#define JPEG_ZOOM_IN BUTTON_SELECT
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#define JPEG_ZOOM_OUT BUTTON_MODE
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#define JPEG_UP BUTTON_UP
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#define JPEG_DOWN BUTTON_DOWN
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#define JPEG_LEFT BUTTON_LEFT
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#define JPEG_RIGHT BUTTON_RIGHT
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#if (CONFIG_KEYPAD == IRIVER_H100_PAD)
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#define JPEG_NEXT BUTTON_ON
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#define JPEG_PREVIOUS BUTTON_REC
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#else
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#define JPEG_NEXT BUTTON_REC
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#define JPEG_PREVIOUS BUTTON_ON
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#endif
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#define JPEG_MENU BUTTON_OFF
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#define JPEG_RC_MENU BUTTON_RC_STOP
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#elif (CONFIG_KEYPAD == IPOD_4G_PAD) || (CONFIG_KEYPAD == IPOD_3G_PAD) || \
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(CONFIG_KEYPAD == IPOD_1G2G_PAD)
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#define JPEG_ZOOM_IN BUTTON_SCROLL_FWD
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#define JPEG_ZOOM_OUT BUTTON_SCROLL_BACK
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#define JPEG_UP BUTTON_MENU
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#define JPEG_DOWN BUTTON_PLAY
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#define JPEG_LEFT BUTTON_LEFT
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#define JPEG_RIGHT BUTTON_RIGHT
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#define JPEG_MENU (BUTTON_SELECT | BUTTON_MENU)
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#define JPEG_NEXT (BUTTON_SELECT | BUTTON_RIGHT)
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#define JPEG_PREVIOUS (BUTTON_SELECT | BUTTON_LEFT)
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#elif CONFIG_KEYPAD == IAUDIO_X5M5_PAD
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#define JPEG_ZOOM_PRE BUTTON_SELECT
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#define JPEG_ZOOM_IN (BUTTON_SELECT | BUTTON_REL)
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#define JPEG_ZOOM_OUT (BUTTON_SELECT | BUTTON_REPEAT)
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#define JPEG_UP BUTTON_UP
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#define JPEG_DOWN BUTTON_DOWN
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#define JPEG_LEFT BUTTON_LEFT
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#define JPEG_RIGHT BUTTON_RIGHT
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#define JPEG_MENU BUTTON_POWER
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#define JPEG_NEXT BUTTON_PLAY
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#define JPEG_PREVIOUS BUTTON_REC
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#elif CONFIG_KEYPAD == GIGABEAT_PAD
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#define JPEG_ZOOM_IN BUTTON_VOL_UP
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#define JPEG_ZOOM_OUT BUTTON_VOL_DOWN
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#define JPEG_UP BUTTON_UP
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#define JPEG_DOWN BUTTON_DOWN
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#define JPEG_LEFT BUTTON_LEFT
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#define JPEG_RIGHT BUTTON_RIGHT
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#define JPEG_MENU BUTTON_MENU
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#define JPEG_NEXT (BUTTON_A | BUTTON_RIGHT)
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#define JPEG_PREVIOUS (BUTTON_A | BUTTON_LEFT)
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#elif CONFIG_KEYPAD == SANSA_E200_PAD
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#define JPEG_ZOOM_PRE BUTTON_SELECT
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#define JPEG_ZOOM_IN (BUTTON_SELECT | BUTTON_REL)
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#define JPEG_ZOOM_OUT (BUTTON_SELECT | BUTTON_REPEAT)
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#define JPEG_UP BUTTON_UP
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#define JPEG_DOWN BUTTON_DOWN
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#define JPEG_LEFT BUTTON_LEFT
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#define JPEG_RIGHT BUTTON_RIGHT
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#define JPEG_MENU BUTTON_POWER
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#define JPEG_SLIDE_SHOW BUTTON_REC
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#define JPEG_NEXT BUTTON_SCROLL_FWD
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#define JPEG_NEXT_REPEAT (BUTTON_SCROLL_FWD|BUTTON_REPEAT)
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#define JPEG_PREVIOUS BUTTON_SCROLL_BACK
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#define JPEG_PREVIOUS_REPEAT (BUTTON_SCROLL_BACK|BUTTON_REPEAT)
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#elif CONFIG_KEYPAD == SANSA_C200_PAD
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#define JPEG_ZOOM_PRE BUTTON_SELECT
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#define JPEG_ZOOM_IN (BUTTON_SELECT | BUTTON_REL)
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#define JPEG_ZOOM_OUT (BUTTON_SELECT | BUTTON_REPEAT)
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#define JPEG_UP BUTTON_UP
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#define JPEG_DOWN BUTTON_DOWN
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#define JPEG_LEFT BUTTON_LEFT
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#define JPEG_RIGHT BUTTON_RIGHT
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#define JPEG_MENU BUTTON_POWER
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#define JPEG_SLIDE_SHOW BUTTON_REC
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#define JPEG_NEXT BUTTON_VOL_UP
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#define JPEG_NEXT_REPEAT (BUTTON_VOL_UP|BUTTON_REPEAT)
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#define JPEG_PREVIOUS BUTTON_VOL_DOWN
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#define JPEG_PREVIOUS_REPEAT (BUTTON_VOL_DOWN|BUTTON_REPEAT)
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#elif CONFIG_KEYPAD == IRIVER_H10_PAD
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#define JPEG_ZOOM_PRE BUTTON_PLAY
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#define JPEG_ZOOM_IN (BUTTON_PLAY | BUTTON_REL)
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#define JPEG_ZOOM_OUT (BUTTON_PLAY | BUTTON_REPEAT)
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#define JPEG_UP BUTTON_SCROLL_UP
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#define JPEG_DOWN BUTTON_SCROLL_DOWN
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#define JPEG_LEFT BUTTON_LEFT
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#define JPEG_RIGHT BUTTON_RIGHT
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#define JPEG_MENU BUTTON_POWER
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#define JPEG_NEXT BUTTON_FF
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#define JPEG_PREVIOUS BUTTON_REW
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#elif CONFIG_KEYPAD == MROBE500_PAD
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#define JPEG_ZOOM_IN BUTTON_RC_VOL_UP
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#define JPEG_ZOOM_OUT BUTTON_RC_VOL_DOWN
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#define JPEG_UP BUTTON_RC_PLAY
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#define JPEG_DOWN BUTTON_RC_DOWN
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#define JPEG_LEFT BUTTON_LEFT
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#define JPEG_RIGHT BUTTON_RIGHT
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#define JPEG_MENU BUTTON_POWER
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#define JPEG_NEXT BUTTON_RC_HEART
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#define JPEG_PREVIOUS BUTTON_RC_MODE
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#elif CONFIG_KEYPAD == GIGABEAT_S_PAD
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#define JPEG_ZOOM_IN BUTTON_VOL_UP
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#define JPEG_ZOOM_OUT BUTTON_VOL_DOWN
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#define JPEG_UP BUTTON_UP
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#define JPEG_DOWN BUTTON_DOWN
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#define JPEG_LEFT BUTTON_LEFT
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#define JPEG_RIGHT BUTTON_RIGHT
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#define JPEG_MENU BUTTON_MENU
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#define JPEG_NEXT BUTTON_NEXT
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#define JPEG_PREVIOUS BUTTON_PREV
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#elif CONFIG_KEYPAD == MROBE100_PAD
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#define JPEG_ZOOM_IN BUTTON_SELECT
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#define JPEG_ZOOM_OUT BUTTON_PLAY
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#define JPEG_UP BUTTON_UP
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#define JPEG_DOWN BUTTON_DOWN
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#define JPEG_LEFT BUTTON_LEFT
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#define JPEG_RIGHT BUTTON_RIGHT
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#define JPEG_MENU BUTTON_MENU
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#define JPEG_NEXT (BUTTON_DISPLAY | BUTTON_RIGHT)
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#define JPEG_PREVIOUS (BUTTON_DISPLAY | BUTTON_LEFT)
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#elif CONFIG_KEYPAD == IAUDIO_M3_PAD
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#define JPEG_ZOOM_PRE BUTTON_RC_PLAY
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#define JPEG_ZOOM_IN (BUTTON_RC_PLAY|BUTTON_REL)
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#define JPEG_ZOOM_OUT (BUTTON_RC_PLAY|BUTTON_REPEAT)
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#define JPEG_UP BUTTON_RC_VOL_UP
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#define JPEG_DOWN BUTTON_RC_VOL_DOWN
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#define JPEG_LEFT BUTTON_RC_REW
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#define JPEG_RIGHT BUTTON_RC_FF
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#define JPEG_MENU BUTTON_RC_REC
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#define JPEG_NEXT BUTTON_RC_MODE
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#define JPEG_PREVIOUS BUTTON_RC_MENU
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|
||||||
|
#elif CONFIG_KEYPAD == COWOND2_PAD
|
||||||
|
|
||||||
|
#elif CONFIG_KEYPAD == IAUDIO67_PAD
|
||||||
|
#define JPEG_ZOOM_IN BUTTON_VOLUP
|
||||||
|
#define JPEG_ZOOM_OUT BUTTON_VOLDOWN
|
||||||
|
#define JPEG_UP BUTTON_STOP
|
||||||
|
#define JPEG_DOWN BUTTON_PLAY
|
||||||
|
#define JPEG_LEFT BUTTON_LEFT
|
||||||
|
#define JPEG_RIGHT BUTTON_RIGHT
|
||||||
|
#define JPEG_MENU BUTTON_MENU
|
||||||
|
#define JPEG_NEXT (BUTTON_PLAY|BUTTON_VOLUP)
|
||||||
|
#define JPEG_PREVIOUS (BUTTON_PLAY|BUTTON_VOLDOWN)
|
||||||
|
|
||||||
|
#else
|
||||||
|
#error No keymap defined!
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#ifdef HAVE_TOUCHSCREEN
|
||||||
|
#ifndef JPEG_UP
|
||||||
|
#define JPEG_UP BUTTON_TOPMIDDLE
|
||||||
|
#endif
|
||||||
|
#ifndef JPEG_DOWN
|
||||||
|
#define JPEG_DOWN BUTTON_BOTTOMMIDDLE
|
||||||
|
#endif
|
||||||
|
#ifndef JPEG_LEFT
|
||||||
|
#define JPEG_LEFT BUTTON_MIDLEFT
|
||||||
|
#endif
|
||||||
|
#ifndef JPEG_RIGHT
|
||||||
|
#define JPEG_RIGHT BUTTON_MIDRIGHT
|
||||||
|
#endif
|
||||||
|
#ifndef JPEG_ZOOM_IN
|
||||||
|
#define JPEG_ZOOM_IN BUTTON_TOPRIGHT
|
||||||
|
#endif
|
||||||
|
#ifndef JPEG_ZOOM_OUT
|
||||||
|
#define JPEG_ZOOM_OUT BUTTON_TOPLEFT
|
||||||
|
#endif
|
||||||
|
#ifndef JPEG_MENU
|
||||||
|
#define JPEG_MENU (BUTTON_CENTER|BUTTON_REL)
|
||||||
|
#endif
|
||||||
|
#ifndef JPEG_NEXT
|
||||||
|
#define JPEG_NEXT BUTTON_BOTTOMRIGHT
|
||||||
|
#endif
|
||||||
|
#ifndef JPEG_PREVIOUS
|
||||||
|
#define JPEG_PREVIOUS BUTTON_BOTTOMLEFT
|
||||||
|
#endif
|
||||||
|
#endif
|
||||||
|
|
||||||
|
|
||||||
|
#endif /* _JPEG_JPEG_H */
|
||||||
1540
apps/plugins/jpeg/jpeg_decoder.c
Normal file
1540
apps/plugins/jpeg/jpeg_decoder.c
Normal file
File diff suppressed because it is too large
Load diff
142
apps/plugins/jpeg/jpeg_decoder.h
Normal file
142
apps/plugins/jpeg/jpeg_decoder.h
Normal file
|
|
@ -0,0 +1,142 @@
|
||||||
|
/***************************************************************************
|
||||||
|
* __________ __ ___.
|
||||||
|
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
|
||||||
|
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
|
||||||
|
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
|
||||||
|
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
|
||||||
|
* \/ \/ \/ \/ \/
|
||||||
|
* $Id$
|
||||||
|
*
|
||||||
|
* JPEG image viewer
|
||||||
|
* (This is a real mess if it has to be coded in one single C file)
|
||||||
|
*
|
||||||
|
* File scrolling addition (C) 2005 Alexander Spyridakis
|
||||||
|
* Copyright (C) 2004 Jörg Hohensohn aka [IDC]Dragon
|
||||||
|
* Heavily borrowed from the IJG implementation (C) Thomas G. Lane
|
||||||
|
* Small & fast downscaling IDCT (C) 2002 by Guido Vollbeding JPEGclub.org
|
||||||
|
*
|
||||||
|
* This program is free software; you can redistribute it and/or
|
||||||
|
* modify it under the terms of the GNU General Public License
|
||||||
|
* as published by the Free Software Foundation; either version 2
|
||||||
|
* of the License, or (at your option) any later version.
|
||||||
|
*
|
||||||
|
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
|
||||||
|
* KIND, either express or implied.
|
||||||
|
*
|
||||||
|
****************************************************************************/
|
||||||
|
|
||||||
|
#ifndef _JPEG_JPEG_DECODER_H
|
||||||
|
#define _JPEG_JPEG_DECODER_H
|
||||||
|
|
||||||
|
#define HUFF_LOOKAHEAD 8 /* # of bits of lookahead */
|
||||||
|
|
||||||
|
struct derived_tbl
|
||||||
|
{
|
||||||
|
/* Basic tables: (element [0] of each array is unused) */
|
||||||
|
long mincode[17]; /* smallest code of length k */
|
||||||
|
long maxcode[18]; /* largest code of length k (-1 if none) */
|
||||||
|
/* (maxcode[17] is a sentinel to ensure huff_DECODE terminates) */
|
||||||
|
int valptr[17]; /* huffval[] index of 1st symbol of length k */
|
||||||
|
|
||||||
|
/* Back link to public Huffman table (needed only in slow_DECODE) */
|
||||||
|
int* pub;
|
||||||
|
|
||||||
|
/* Lookahead tables: indexed by the next HUFF_LOOKAHEAD bits of
|
||||||
|
the input data stream. If the next Huffman code is no more
|
||||||
|
than HUFF_LOOKAHEAD bits long, we can obtain its length and
|
||||||
|
the corresponding symbol directly from these tables. */
|
||||||
|
int look_nbits[1<<HUFF_LOOKAHEAD]; /* # bits, or 0 if too long */
|
||||||
|
unsigned char look_sym[1<<HUFF_LOOKAHEAD]; /* symbol, or unused */
|
||||||
|
};
|
||||||
|
|
||||||
|
#define QUANT_TABLE_LENGTH 64
|
||||||
|
|
||||||
|
/* for type of Huffman table */
|
||||||
|
#define DC_LEN 28
|
||||||
|
#define AC_LEN 178
|
||||||
|
|
||||||
|
struct huffman_table
|
||||||
|
{ /* length and code according to JFIF format */
|
||||||
|
int huffmancodes_dc[DC_LEN];
|
||||||
|
int huffmancodes_ac[AC_LEN];
|
||||||
|
};
|
||||||
|
|
||||||
|
struct frame_component
|
||||||
|
{
|
||||||
|
int ID;
|
||||||
|
int horizontal_sampling;
|
||||||
|
int vertical_sampling;
|
||||||
|
int quanttable_select;
|
||||||
|
};
|
||||||
|
|
||||||
|
struct scan_component
|
||||||
|
{
|
||||||
|
int ID;
|
||||||
|
int DC_select;
|
||||||
|
int AC_select;
|
||||||
|
};
|
||||||
|
|
||||||
|
struct bitstream
|
||||||
|
{
|
||||||
|
unsigned long get_buffer; /* current bit-extraction buffer */
|
||||||
|
int bits_left; /* # of unused bits in it */
|
||||||
|
unsigned char* next_input_byte;
|
||||||
|
unsigned char* input_end; /* upper limit +1 */
|
||||||
|
};
|
||||||
|
|
||||||
|
struct jpeg
|
||||||
|
{
|
||||||
|
int x_size, y_size; /* size of image (can be less than block boundary) */
|
||||||
|
int x_phys, y_phys; /* physical size, block aligned */
|
||||||
|
int x_mbl; /* x dimension of MBL */
|
||||||
|
int y_mbl; /* y dimension of MBL */
|
||||||
|
int blocks; /* blocks per MB */
|
||||||
|
int restart_interval; /* number of MCUs between RSTm markers */
|
||||||
|
int store_pos[4]; /* for Y block ordering */
|
||||||
|
|
||||||
|
unsigned char* p_entropy_data;
|
||||||
|
unsigned char* p_entropy_end;
|
||||||
|
|
||||||
|
int quanttable[4][QUANT_TABLE_LENGTH]; /* raw quantization tables 0-3 */
|
||||||
|
int qt_idct[2][QUANT_TABLE_LENGTH]; /* quantization tables for IDCT */
|
||||||
|
|
||||||
|
struct huffman_table hufftable[2]; /* Huffman tables */
|
||||||
|
struct derived_tbl dc_derived_tbls[2]; /* Huffman-LUTs */
|
||||||
|
struct derived_tbl ac_derived_tbls[2];
|
||||||
|
|
||||||
|
struct frame_component frameheader[3]; /* Component descriptor */
|
||||||
|
struct scan_component scanheader[3]; /* currently not used */
|
||||||
|
|
||||||
|
int mcu_membership[6]; /* info per block */
|
||||||
|
int tab_membership[6];
|
||||||
|
int subsample_x[3]; /* info per component */
|
||||||
|
int subsample_y[3];
|
||||||
|
};
|
||||||
|
|
||||||
|
|
||||||
|
/* possible return flags for process_markers() */
|
||||||
|
#define HUFFTAB 0x0001 /* with huffman table */
|
||||||
|
#define QUANTTAB 0x0002 /* with quantization table */
|
||||||
|
#define APP0_JFIF 0x0004 /* with APP0 segment following JFIF standard */
|
||||||
|
#define FILL_FF 0x0008 /* with 0xFF padding bytes at begin/end */
|
||||||
|
#define SOF0 0x0010 /* with SOF0-Segment */
|
||||||
|
#define DHT 0x0020 /* with Definition of huffman tables */
|
||||||
|
#define SOS 0x0040 /* with Start-of-Scan segment */
|
||||||
|
#define DQT 0x0080 /* with definition of quantization table */
|
||||||
|
|
||||||
|
/* various helper functions */
|
||||||
|
void default_huff_tbl(struct jpeg* p_jpeg);
|
||||||
|
void build_lut(struct jpeg* p_jpeg);
|
||||||
|
int process_markers(unsigned char* p_src, long size, struct jpeg* p_jpeg);
|
||||||
|
|
||||||
|
/* the main decode function */
|
||||||
|
#ifdef HAVE_LCD_COLOR
|
||||||
|
int jpeg_decode(struct jpeg* p_jpeg, unsigned char* p_pixel[3],
|
||||||
|
int downscale, void (*pf_progress)(int current, int total));
|
||||||
|
#else
|
||||||
|
int jpeg_decode(struct jpeg* p_jpeg, unsigned char* p_pixel[1], int downscale,
|
||||||
|
void (*pf_progress)(int current, int total));
|
||||||
|
#endif
|
||||||
|
|
||||||
|
|
||||||
|
#endif /* _JPEG_JPEG_DECODER_H */
|
||||||
401
apps/plugins/jpeg/yuv2rgb.c
Normal file
401
apps/plugins/jpeg/yuv2rgb.c
Normal file
|
|
@ -0,0 +1,401 @@
|
||||||
|
/***************************************************************************
|
||||||
|
* __________ __ ___.
|
||||||
|
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
|
||||||
|
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
|
||||||
|
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
|
||||||
|
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
|
||||||
|
* \/ \/ \/ \/ \/
|
||||||
|
* $Id$
|
||||||
|
*
|
||||||
|
* JPEG image viewer
|
||||||
|
* (This is a real mess if it has to be coded in one single C file)
|
||||||
|
*
|
||||||
|
* File scrolling addition (C) 2005 Alexander Spyridakis
|
||||||
|
* Copyright (C) 2004 Jörg Hohensohn aka [IDC]Dragon
|
||||||
|
* Heavily borrowed from the IJG implementation (C) Thomas G. Lane
|
||||||
|
* Small & fast downscaling IDCT (C) 2002 by Guido Vollbeding JPEGclub.org
|
||||||
|
*
|
||||||
|
* This program is free software; you can redistribute it and/or
|
||||||
|
* modify it under the terms of the GNU General Public License
|
||||||
|
* as published by the Free Software Foundation; either version 2
|
||||||
|
* of the License, or (at your option) any later version.
|
||||||
|
*
|
||||||
|
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
|
||||||
|
* KIND, either express or implied.
|
||||||
|
*
|
||||||
|
****************************************************************************/
|
||||||
|
|
||||||
|
#include "plugin.h"
|
||||||
|
#include "yuv2rgb.h"
|
||||||
|
|
||||||
|
/* Needed for memset and rb->lcd_framebuffer */
|
||||||
|
extern const struct plugin_api* rb;
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Conversion of full 0-255 range YCrCb to RGB:
|
||||||
|
* |R| |1.000000 -0.000001 1.402000| |Y'|
|
||||||
|
* |G| = |1.000000 -0.334136 -0.714136| |Pb|
|
||||||
|
* |B| |1.000000 1.772000 0.000000| |Pr|
|
||||||
|
* Scaled (yields s15-bit output):
|
||||||
|
* |R| |128 0 179| |Y |
|
||||||
|
* |G| = |128 -43 -91| |Cb - 128|
|
||||||
|
* |B| |128 227 0| |Cr - 128|
|
||||||
|
*/
|
||||||
|
#define YFAC 128
|
||||||
|
#define RVFAC 179
|
||||||
|
#define GUFAC (-43)
|
||||||
|
#define GVFAC (-91)
|
||||||
|
#define BUFAC 227
|
||||||
|
#define YUV_WHITE (255*YFAC)
|
||||||
|
#define NODITHER_DELTA (127*YFAC)
|
||||||
|
#define COMPONENT_SHIFT 15
|
||||||
|
#define MATRIX_SHIFT 7
|
||||||
|
|
||||||
|
static inline int clamp_component(int x)
|
||||||
|
{
|
||||||
|
if ((unsigned)x > YUV_WHITE)
|
||||||
|
x = x < 0 ? 0 : YUV_WHITE;
|
||||||
|
return x;
|
||||||
|
}
|
||||||
|
|
||||||
|
static inline int clamp_component_bits(int x, int bits)
|
||||||
|
{
|
||||||
|
if ((unsigned)x > (1u << bits) - 1)
|
||||||
|
x = x < 0 ? 0 : (1 << bits) - 1;
|
||||||
|
return x;
|
||||||
|
}
|
||||||
|
|
||||||
|
static inline int component_to_lcd(int x, int bits, int delta)
|
||||||
|
{
|
||||||
|
/* Formula used in core bitmap loader. */
|
||||||
|
return (((1 << bits) - 1)*x + (x >> (8 - bits)) + delta) >> COMPONENT_SHIFT;
|
||||||
|
}
|
||||||
|
|
||||||
|
static inline int lcd_to_component(int x, int bits, int delta)
|
||||||
|
{
|
||||||
|
/* Reasonable, approximate reversal to get a full range back from the
|
||||||
|
quantized value. */
|
||||||
|
return YUV_WHITE*x / ((1 << bits) - 1);
|
||||||
|
(void)delta;
|
||||||
|
}
|
||||||
|
|
||||||
|
#define RED 0
|
||||||
|
#define GRN 1
|
||||||
|
#define BLU 2
|
||||||
|
|
||||||
|
struct rgb_err
|
||||||
|
{
|
||||||
|
int16_t errbuf[LCD_WIDTH+2]; /* Error record for line below */
|
||||||
|
} rgb_err_buffers[3];
|
||||||
|
|
||||||
|
struct rgb_pixel
|
||||||
|
{
|
||||||
|
int r, g, b; /* Current pixel components in s16.0 */
|
||||||
|
int inc; /* Current line increment (-1 or 1) */
|
||||||
|
int row; /* Current row in source image */
|
||||||
|
int col; /* Current column in source image */
|
||||||
|
int ce[3]; /* Errors to apply to current pixel */
|
||||||
|
struct rgb_err *e; /* RED, GRN, BLU */
|
||||||
|
int epos; /* Current position in error record */
|
||||||
|
};
|
||||||
|
|
||||||
|
struct rgb_pixel *pixel;
|
||||||
|
|
||||||
|
/** round and truncate to lcd depth **/
|
||||||
|
static fb_data pixel_to_lcd_colour(void)
|
||||||
|
{
|
||||||
|
struct rgb_pixel *p = pixel;
|
||||||
|
int r, g, b;
|
||||||
|
|
||||||
|
r = component_to_lcd(p->r, LCD_RED_BITS, NODITHER_DELTA);
|
||||||
|
r = clamp_component_bits(r, LCD_RED_BITS);
|
||||||
|
|
||||||
|
g = component_to_lcd(p->g, LCD_GREEN_BITS, NODITHER_DELTA);
|
||||||
|
g = clamp_component_bits(g, LCD_GREEN_BITS);
|
||||||
|
|
||||||
|
b = component_to_lcd(p->b, LCD_BLUE_BITS, NODITHER_DELTA);
|
||||||
|
b = clamp_component_bits(b, LCD_BLUE_BITS);
|
||||||
|
|
||||||
|
return LCD_RGBPACK_LCD(r, g, b);
|
||||||
|
}
|
||||||
|
|
||||||
|
/** write a monochrome pixel to the colour LCD **/
|
||||||
|
static fb_data pixel_to_lcd_gray(void)
|
||||||
|
{
|
||||||
|
int r, g, b;
|
||||||
|
|
||||||
|
g = clamp_component(pixel->g);
|
||||||
|
r = component_to_lcd(g, LCD_RED_BITS, NODITHER_DELTA);
|
||||||
|
b = component_to_lcd(g, LCD_BLUE_BITS, NODITHER_DELTA);
|
||||||
|
g = component_to_lcd(g, LCD_GREEN_BITS, NODITHER_DELTA);
|
||||||
|
|
||||||
|
return LCD_RGBPACK_LCD(r, g, b);
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Bayer ordered dithering - swiped from the core bitmap loader.
|
||||||
|
*/
|
||||||
|
static fb_data pixel_odither_to_lcd(void)
|
||||||
|
{
|
||||||
|
/* canonical ordered dither matrix */
|
||||||
|
static const unsigned char dither_matrix[16][16] = {
|
||||||
|
{ 0,192, 48,240, 12,204, 60,252, 3,195, 51,243, 15,207, 63,255 },
|
||||||
|
{ 128, 64,176,112,140, 76,188,124,131, 67,179,115,143, 79,191,127 },
|
||||||
|
{ 32,224, 16,208, 44,236, 28,220, 35,227, 19,211, 47,239, 31,223 },
|
||||||
|
{ 160, 96,144, 80,172,108,156, 92,163, 99,147, 83,175,111,159, 95 },
|
||||||
|
{ 8,200, 56,248, 4,196, 52,244, 11,203, 59,251, 7,199, 55,247 },
|
||||||
|
{ 136, 72,184,120,132, 68,180,116,139, 75,187,123,135, 71,183,119 },
|
||||||
|
{ 40,232, 24,216, 36,228, 20,212, 43,235, 27,219, 39,231, 23,215 },
|
||||||
|
{ 168,104,152, 88,164,100,148, 84,171,107,155, 91,167,103,151, 87 },
|
||||||
|
{ 2,194, 50,242, 14,206, 62,254, 1,193, 49,241, 13,205, 61,253 },
|
||||||
|
{ 130, 66,178,114,142, 78,190,126,129, 65,177,113,141, 77,189,125 },
|
||||||
|
{ 34,226, 18,210, 46,238, 30,222, 33,225, 17,209, 45,237, 29,221 },
|
||||||
|
{ 162, 98,146, 82,174,110,158, 94,161, 97,145, 81,173,109,157, 93 },
|
||||||
|
{ 10,202, 58,250, 6,198, 54,246, 9,201, 57,249, 5,197, 53,245 },
|
||||||
|
{ 138, 74,186,122,134, 70,182,118,137, 73,185,121,133, 69,181,117 },
|
||||||
|
{ 42,234, 26,218, 38,230, 22,214, 41,233, 25,217, 37,229, 21,213 },
|
||||||
|
{ 170,106,154, 90,166,102,150, 86,169,105,153, 89,165,101,149, 85 }
|
||||||
|
};
|
||||||
|
|
||||||
|
struct rgb_pixel *p = pixel;
|
||||||
|
int r, g, b, delta;
|
||||||
|
|
||||||
|
delta = dither_matrix[p->col & 15][p->row & 15] << MATRIX_SHIFT;
|
||||||
|
|
||||||
|
r = component_to_lcd(p->r, LCD_RED_BITS, delta);
|
||||||
|
r = clamp_component_bits(r, LCD_RED_BITS);
|
||||||
|
|
||||||
|
g = component_to_lcd(p->g, LCD_GREEN_BITS, delta);
|
||||||
|
g = clamp_component_bits(g, LCD_GREEN_BITS);
|
||||||
|
|
||||||
|
b = component_to_lcd(p->b, LCD_BLUE_BITS, delta);
|
||||||
|
b = clamp_component_bits(b, LCD_BLUE_BITS);
|
||||||
|
|
||||||
|
p->col += p->inc;
|
||||||
|
|
||||||
|
return LCD_RGBPACK_LCD(r, g, b);
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Floyd/Steinberg dither to lcd depth.
|
||||||
|
*
|
||||||
|
* Apply filter to each component in serpentine pattern. Kernel shown for
|
||||||
|
* L->R scan. Kernel is reversed for R->L.
|
||||||
|
* * 7
|
||||||
|
* 3 5 1 (1/16)
|
||||||
|
*/
|
||||||
|
static inline void distribute_error(int *ce, struct rgb_err *e,
|
||||||
|
int err, int epos, int inc)
|
||||||
|
{
|
||||||
|
*ce = (7*err >> 4) + e->errbuf[epos+inc];
|
||||||
|
e->errbuf[epos+inc] = err >> 4;
|
||||||
|
e->errbuf[epos] += 5*err >> 4;
|
||||||
|
e->errbuf[epos-inc] += 3*err >> 4;
|
||||||
|
}
|
||||||
|
|
||||||
|
static fb_data pixel_fsdither_to_lcd(void)
|
||||||
|
{
|
||||||
|
struct rgb_pixel *p = pixel;
|
||||||
|
int rc, gc, bc, r, g, b;
|
||||||
|
int inc, epos;
|
||||||
|
|
||||||
|
/* Full components with error terms */
|
||||||
|
rc = p->r + p->ce[RED];
|
||||||
|
r = component_to_lcd(rc, LCD_RED_BITS, 0);
|
||||||
|
r = clamp_component_bits(r, LCD_RED_BITS);
|
||||||
|
|
||||||
|
gc = p->g + p->ce[GRN];
|
||||||
|
g = component_to_lcd(gc, LCD_GREEN_BITS, 0);
|
||||||
|
g = clamp_component_bits(g, LCD_GREEN_BITS);
|
||||||
|
|
||||||
|
bc = p->b + p->ce[BLU];
|
||||||
|
b = component_to_lcd(bc, LCD_BLUE_BITS, 0);
|
||||||
|
b = clamp_component_bits(b, LCD_BLUE_BITS);
|
||||||
|
|
||||||
|
/* Get pixel errors */
|
||||||
|
rc -= lcd_to_component(r, LCD_RED_BITS, 0);
|
||||||
|
gc -= lcd_to_component(g, LCD_GREEN_BITS, 0);
|
||||||
|
bc -= lcd_to_component(b, LCD_BLUE_BITS, 0);
|
||||||
|
|
||||||
|
/* Spead error to surrounding pixels. */
|
||||||
|
inc = p->inc;
|
||||||
|
epos = p->epos;
|
||||||
|
p->epos += inc;
|
||||||
|
|
||||||
|
distribute_error(&p->ce[RED], &p->e[RED], rc, epos, inc);
|
||||||
|
distribute_error(&p->ce[GRN], &p->e[GRN], gc, epos, inc);
|
||||||
|
distribute_error(&p->ce[BLU], &p->e[BLU], bc, epos, inc);
|
||||||
|
|
||||||
|
/* Pack and return pixel */
|
||||||
|
return LCD_RGBPACK_LCD(r, g, b);
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Functions for each output mode, colour then grayscale. */
|
||||||
|
static fb_data (* const pixel_funcs[COLOUR_NUM_MODES][DITHER_NUM_MODES])(void) =
|
||||||
|
{
|
||||||
|
[COLOURMODE_COLOUR] =
|
||||||
|
{
|
||||||
|
[DITHER_NONE] = pixel_to_lcd_colour,
|
||||||
|
[DITHER_ORDERED] = pixel_odither_to_lcd,
|
||||||
|
[DITHER_DIFFUSION] = pixel_fsdither_to_lcd,
|
||||||
|
},
|
||||||
|
[COLOURMODE_GRAY] =
|
||||||
|
{
|
||||||
|
[DITHER_NONE] = pixel_to_lcd_gray,
|
||||||
|
[DITHER_ORDERED] = pixel_odither_to_lcd,
|
||||||
|
[DITHER_DIFFUSION] = pixel_fsdither_to_lcd,
|
||||||
|
},
|
||||||
|
};
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Draw a partial YUV colour bitmap
|
||||||
|
*
|
||||||
|
* Runs serpentine pattern when dithering is DITHER_DIFFUSION, else scan is
|
||||||
|
* always L->R.
|
||||||
|
*/
|
||||||
|
void yuv_bitmap_part(unsigned char *src[3], int csub_x, int csub_y,
|
||||||
|
int src_x, int src_y, int stride,
|
||||||
|
int x, int y, int width, int height,
|
||||||
|
int colour_mode, int dither_mode)
|
||||||
|
{
|
||||||
|
fb_data *dst, *dst_end;
|
||||||
|
fb_data (*pixel_func)(void);
|
||||||
|
struct rgb_pixel px;
|
||||||
|
|
||||||
|
if (x + width > LCD_WIDTH)
|
||||||
|
width = LCD_WIDTH - x; /* Clip right */
|
||||||
|
if (x < 0)
|
||||||
|
width += x, x = 0; /* Clip left */
|
||||||
|
if (width <= 0)
|
||||||
|
return; /* nothing left to do */
|
||||||
|
|
||||||
|
if (y + height > LCD_HEIGHT)
|
||||||
|
height = LCD_HEIGHT - y; /* Clip bottom */
|
||||||
|
if (y < 0)
|
||||||
|
height += y, y = 0; /* Clip top */
|
||||||
|
if (height <= 0)
|
||||||
|
return; /* nothing left to do */
|
||||||
|
|
||||||
|
pixel = &px;
|
||||||
|
|
||||||
|
dst = rb->lcd_framebuffer + LCD_WIDTH * y + x;
|
||||||
|
dst_end = dst + LCD_WIDTH * height;
|
||||||
|
|
||||||
|
if (colour_mode == COLOURMODE_GRAY)
|
||||||
|
csub_y = 0; /* Ignore Cb, Cr */
|
||||||
|
|
||||||
|
pixel_func = pixel_funcs[colour_mode]
|
||||||
|
[dither_mode];
|
||||||
|
|
||||||
|
if (dither_mode == DITHER_DIFFUSION)
|
||||||
|
{
|
||||||
|
/* Reset error terms. */
|
||||||
|
px.e = rgb_err_buffers;
|
||||||
|
px.ce[RED] = px.ce[GRN] = px.ce[BLU] = 0;
|
||||||
|
rb->memset(px.e, 0, 3*sizeof (struct rgb_err));
|
||||||
|
}
|
||||||
|
|
||||||
|
do
|
||||||
|
{
|
||||||
|
fb_data *dst_row, *row_end;
|
||||||
|
const unsigned char *ysrc;
|
||||||
|
px.inc = 1;
|
||||||
|
|
||||||
|
if (dither_mode == DITHER_DIFFUSION)
|
||||||
|
{
|
||||||
|
/* Use R->L scan on odd lines */
|
||||||
|
px.inc -= (src_y & 1) << 1;
|
||||||
|
px.epos = x + 1;
|
||||||
|
|
||||||
|
if (px.inc < 0)
|
||||||
|
px.epos += width - 1;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (px.inc == 1)
|
||||||
|
{
|
||||||
|
/* Scan is L->R */
|
||||||
|
dst_row = dst;
|
||||||
|
row_end = dst_row + width;
|
||||||
|
px.col = src_x;
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
/* Scan is R->L */
|
||||||
|
row_end = dst - 1;
|
||||||
|
dst_row = row_end + width;
|
||||||
|
px.col = src_x + width - 1;
|
||||||
|
}
|
||||||
|
|
||||||
|
ysrc = src[0] + stride * src_y + px.col;
|
||||||
|
px.row = src_y;
|
||||||
|
|
||||||
|
/* Do one row of pixels */
|
||||||
|
if (csub_y) /* colour */
|
||||||
|
{
|
||||||
|
/* upsampling, YUV->RGB conversion and reduction to RGB565 in one go */
|
||||||
|
const unsigned char *usrc, *vsrc;
|
||||||
|
|
||||||
|
usrc = src[1] + (stride/csub_x) * (src_y/csub_y)
|
||||||
|
+ (px.col/csub_x);
|
||||||
|
vsrc = src[2] + (stride/csub_x) * (src_y/csub_y)
|
||||||
|
+ (px.col/csub_x);
|
||||||
|
int xphase = px.col % csub_x;
|
||||||
|
int xphase_reset = px.inc * csub_x;
|
||||||
|
int y, v, u, rv, guv, bu;
|
||||||
|
|
||||||
|
v = *vsrc - 128;
|
||||||
|
vsrc += px.inc;
|
||||||
|
u = *usrc - 128;
|
||||||
|
usrc += px.inc;
|
||||||
|
rv = RVFAC*v;
|
||||||
|
guv = GUFAC*u + GVFAC*v;
|
||||||
|
bu = BUFAC*u;
|
||||||
|
|
||||||
|
while (1)
|
||||||
|
{
|
||||||
|
y = YFAC*(*ysrc);
|
||||||
|
ysrc += px.inc;
|
||||||
|
px.r = y + rv;
|
||||||
|
px.g = y + guv;
|
||||||
|
px.b = y + bu;
|
||||||
|
|
||||||
|
*dst_row = pixel_func();
|
||||||
|
dst_row += px.inc;
|
||||||
|
|
||||||
|
if (dst_row == row_end)
|
||||||
|
break;
|
||||||
|
|
||||||
|
xphase += px.inc;
|
||||||
|
if ((unsigned)xphase < (unsigned)csub_x)
|
||||||
|
continue;
|
||||||
|
|
||||||
|
/* fetch new chromas */
|
||||||
|
v = *vsrc - 128;
|
||||||
|
vsrc += px.inc;
|
||||||
|
u = *usrc - 128;
|
||||||
|
usrc += px.inc;
|
||||||
|
rv = RVFAC*v;
|
||||||
|
guv = GUFAC*u + GVFAC*v;
|
||||||
|
bu = BUFAC*u;
|
||||||
|
|
||||||
|
xphase -= xphase_reset;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
else /* monochrome */
|
||||||
|
{
|
||||||
|
do
|
||||||
|
{
|
||||||
|
/* Set all components the same for dithering purposes */
|
||||||
|
px.g = px.r = px.b = YFAC*(*ysrc);
|
||||||
|
*dst_row = pixel_func();
|
||||||
|
ysrc += px.inc;
|
||||||
|
dst_row += px.inc;
|
||||||
|
}
|
||||||
|
while (dst_row != row_end);
|
||||||
|
}
|
||||||
|
|
||||||
|
src_y++;
|
||||||
|
dst += LCD_WIDTH;
|
||||||
|
}
|
||||||
|
while (dst < dst_end);
|
||||||
|
}
|
||||||
51
apps/plugins/jpeg/yuv2rgb.h
Normal file
51
apps/plugins/jpeg/yuv2rgb.h
Normal file
|
|
@ -0,0 +1,51 @@
|
||||||
|
/***************************************************************************
|
||||||
|
* __________ __ ___.
|
||||||
|
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
|
||||||
|
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
|
||||||
|
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
|
||||||
|
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
|
||||||
|
* \/ \/ \/ \/ \/
|
||||||
|
* $Id$
|
||||||
|
*
|
||||||
|
* JPEG image viewer
|
||||||
|
* (This is a real mess if it has to be coded in one single C file)
|
||||||
|
*
|
||||||
|
* File scrolling addition (C) 2005 Alexander Spyridakis
|
||||||
|
* Copyright (C) 2004 Jörg Hohensohn aka [IDC]Dragon
|
||||||
|
* Heavily borrowed from the IJG implementation (C) Thomas G. Lane
|
||||||
|
* Small & fast downscaling IDCT (C) 2002 by Guido Vollbeding JPEGclub.org
|
||||||
|
*
|
||||||
|
* This program is free software; you can redistribute it and/or
|
||||||
|
* modify it under the terms of the GNU General Public License
|
||||||
|
* as published by the Free Software Foundation; either version 2
|
||||||
|
* of the License, or (at your option) any later version.
|
||||||
|
*
|
||||||
|
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
|
||||||
|
* KIND, either express or implied.
|
||||||
|
*
|
||||||
|
****************************************************************************/
|
||||||
|
|
||||||
|
#ifndef _JPEG_YUV2RGB_H
|
||||||
|
#define _JPEG_YUV2RGB_H
|
||||||
|
|
||||||
|
enum color_modes
|
||||||
|
{
|
||||||
|
COLOURMODE_COLOUR = 0,
|
||||||
|
COLOURMODE_GRAY,
|
||||||
|
COLOUR_NUM_MODES
|
||||||
|
};
|
||||||
|
|
||||||
|
enum dither_modes
|
||||||
|
{
|
||||||
|
DITHER_NONE = 0, /* No dithering */
|
||||||
|
DITHER_ORDERED, /* Bayer ordered */
|
||||||
|
DITHER_DIFFUSION, /* Floyd/Steinberg error diffusion */
|
||||||
|
DITHER_NUM_MODES
|
||||||
|
};
|
||||||
|
|
||||||
|
void yuv_bitmap_part(unsigned char *src[3], int csub_x, int csub_y,
|
||||||
|
int src_x, int src_y, int stride,
|
||||||
|
int x, int y, int width, int height,
|
||||||
|
int colour_mode, int dither_mode);
|
||||||
|
|
||||||
|
#endif
|
||||||
Loading…
Add table
Add a link
Reference in a new issue