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All-new greyscale library, replacing the old one. Features: (1) Drawing/updating is faster than the old grayscale lib at full depth. (2) Always 129 shades instead of 2..33 shades. (3) No graininess caused by frequent updates (mpegplayer, doom, ...). (4) Needs less memory than the old grayscale lib at full depth. * The tradeoff is slightly higher CPU load in the ISR (frames are calculated 'live') and an extra function in the core. * Ported all plugins which used the graylib to use the new one. * Some slight optimisations for archos and H1x0 LCD update.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@15998 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Jens Arnold
parent
d3586837fa
commit
feb5b15e9b
35 changed files with 2872 additions and 357 deletions
358
apps/plugins/lib/grey_scroll.c
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358
apps/plugins/lib/grey_scroll.c
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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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* New greyscale framework
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* Scrolling routines
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*
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* This is a generic framework to display 129 shades of grey on low-depth
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* bitmap LCDs (Archos b&w, Iriver & Ipod 4-grey) within plugins.
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*
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* Copyright (C) 2008 Jens Arnold
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*
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* All files in this archive are subject to the GNU General Public License.
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* See the file COPYING in the source tree root for full license agreement.
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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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#include "plugin.h"
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#include "grey.h"
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/*** Scrolling ***/
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/* Scroll left */
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void grey_scroll_left(int count)
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{
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unsigned char *data, *data_end;
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int length, blank;
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if ((unsigned)count >= (unsigned)_grey_info.width)
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return;
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data = _grey_info.buffer;
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data_end = data + _GREY_MULUQ(_grey_info.width, _grey_info.height);
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length = _grey_info.width - count;
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blank = (_grey_info.drawmode & DRMODE_INVERSEVID) ?
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_grey_info.fg_val : _grey_info.bg_val;
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do
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{
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_grey_rb->memmove(data, data + count, length);
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_grey_rb->memset(data + length, blank, count);
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data += _grey_info.width;
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}
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while (data < data_end);
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}
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/* Scroll right */
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void grey_scroll_right(int count)
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{
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unsigned char *data, *data_end;
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int length, blank;
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if ((unsigned)count >= (unsigned)_grey_info.width)
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return;
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data = _grey_info.buffer;
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data_end = data + _GREY_MULUQ(_grey_info.width, _grey_info.height);
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length = _grey_info.width - count;
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blank = (_grey_info.drawmode & DRMODE_INVERSEVID) ?
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_grey_info.fg_val : _grey_info.bg_val;
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do
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{
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_grey_rb->memmove(data + count, data, length);
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_grey_rb->memset(data, blank, count);
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data += _grey_info.width;
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}
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while (data < data_end);
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}
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/* Scroll up */
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void grey_scroll_up(int count)
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{
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long shift, length;
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int blank;
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if ((unsigned)count >= (unsigned)_grey_info.height)
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return;
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shift = _GREY_MULUQ(_grey_info.width, count);
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length = _GREY_MULUQ(_grey_info.width, _grey_info.height - count);
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blank = (_grey_info.drawmode & DRMODE_INVERSEVID) ?
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_grey_info.fg_val : _grey_info.bg_val;
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_grey_rb->memmove(_grey_info.buffer, _grey_info.buffer + shift, length);
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_grey_rb->memset(_grey_info.buffer + length, blank, shift);
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}
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/* Scroll down */
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void grey_scroll_down(int count)
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{
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long shift, length;
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int blank;
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if ((unsigned)count >= (unsigned)_grey_info.height)
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return;
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shift = _GREY_MULUQ(_grey_info.width, count);
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length = _GREY_MULUQ(_grey_info.width, _grey_info.height - count);
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blank = (_grey_info.drawmode & DRMODE_INVERSEVID) ?
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_grey_info.fg_val : _grey_info.bg_val;
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_grey_rb->memmove(_grey_info.buffer + shift, _grey_info.buffer, length);
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_grey_rb->memset(_grey_info.buffer, blank, shift);
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}
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/*** Unbuffered scrolling functions ***/
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#ifdef SIMULATOR
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/* Scroll left */
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void grey_ub_scroll_left(int count)
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{
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grey_scroll_left(count);
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grey_update();
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}
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/* Scroll right */
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void grey_ub_scroll_right(int count)
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{
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grey_scroll_right(count);
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grey_update();
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}
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/* Scroll up */
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void grey_ub_scroll_up(int count)
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{
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grey_scroll_up(count);
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grey_update();
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}
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/* Scroll down */
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void grey_ub_scroll_down(int count)
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{
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grey_scroll_down(count);
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grey_update();
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}
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#else /* !SIMULATOR */
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/* Scroll left */
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void grey_ub_scroll_left(int count)
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{
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unsigned char *dst, *src, *end;
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int blank, y, idx;
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if ((count == 0) || ((unsigned)count >= (unsigned)_grey_info.width))
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return;
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blank = (_grey_info.drawmode & DRMODE_INVERSEVID) ?
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_grey_info.fg_val : _grey_info.bg_val;
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for (y = 0; y < _grey_info.height; y++)
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{
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#if LCD_PIXELFORMAT == HORIZONTAL_PACKING
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idx = _GREY_MULUQ(_grey_info.width, y);
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#else
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#if LCD_DEPTH == 1
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idx = _GREY_MULUQ(_grey_info.width, y & ~7) + (~y & 7);
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#elif LCD_DEPTH == 2
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idx = _GREY_MULUQ(_grey_info.width, y & ~3) + (~y & 3);
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#endif
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#endif /* LCD_PIXELFORMAT */
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dst = &_grey_info.data[idx].value;
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src = dst + count * _GREY_X_ADVANCE;
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end = dst + _grey_info.width * _GREY_X_ADVANCE;
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do
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{
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*dst = *src;
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dst += _GREY_X_ADVANCE;
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src += _GREY_X_ADVANCE;
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}
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while (src < end);
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do
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{
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*dst = blank;
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dst += _GREY_X_ADVANCE;
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}
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while (dst < end);
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}
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}
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/* Scroll right */
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void grey_ub_scroll_right(int count)
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{
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unsigned char *dst, *src, *start;
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int blank, y, idx;
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if ((count == 0) || ((unsigned)count >= (unsigned)_grey_info.width))
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return;
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blank = (_grey_info.drawmode & DRMODE_INVERSEVID) ?
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_grey_info.fg_val : _grey_info.bg_val;
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for (y = 0; y < _grey_info.height; y++)
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{
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#if LCD_PIXELFORMAT == HORIZONTAL_PACKING
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idx = _GREY_MULUQ(_grey_info.width, y);
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#else
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#if LCD_DEPTH == 1
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idx = _GREY_MULUQ(_grey_info.width, y & ~7) + (~y & 7);
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#elif LCD_DEPTH == 2
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idx = _GREY_MULUQ(_grey_info.width, y & ~3) + (~y & 3);
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#endif
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#endif /* LCD_PIXELFORMAT */
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start = &_grey_info.data[idx].value;
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dst = start + _grey_info.width * _GREY_X_ADVANCE;
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src = dst - count * _GREY_X_ADVANCE;
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do
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{
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dst -= _GREY_X_ADVANCE;
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src -= _GREY_X_ADVANCE;
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*dst = *src;
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}
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while (src > start);
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do
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{
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dst -= _GREY_X_ADVANCE;
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*dst = blank;
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}
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while (dst > start);
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}
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}
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void grey_ub_scroll_up(int count)
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{
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unsigned char *dst, *dst_end, *src;
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int blank, ys, yd, is, id;
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if ((unsigned)count >= (unsigned)_grey_info.height)
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return;
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blank = (_grey_info.drawmode & DRMODE_INVERSEVID) ?
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_grey_info.fg_val : _grey_info.bg_val;
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for (ys = count, yd = 0; ys < _grey_info.height; ys++, yd++)
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{
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#if LCD_PIXELFORMAT == HORIZONTAL_PACKING
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id = _GREY_MULUQ(_grey_info.width, yd);
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is = _GREY_MULUQ(_grey_info.width, ys);
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#else
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#if LCD_DEPTH == 1
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id = _GREY_MULUQ(_grey_info.width, yd & ~7) + (~yd & 7);
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is = _GREY_MULUQ(_grey_info.width, ys & ~7) + (~ys & 7);
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#elif LCD_DEPTH == 2
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id = _GREY_MULUQ(_grey_info.width, yd & ~3) + (~yd & 3);
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is = _GREY_MULUQ(_grey_info.width, ys & ~3) + (~ys & 3);
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#endif
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#endif /* LCD_PIXELFORMAT */
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dst = &_grey_info.data[id].value;
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src = &_grey_info.data[is].value;
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dst_end = dst + _grey_info.width * _GREY_X_ADVANCE;
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do
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{
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*dst = *src;
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dst += _GREY_X_ADVANCE;
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src += _GREY_X_ADVANCE;
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}
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while (dst < dst_end);
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}
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for (; yd < _grey_info.height; yd++)
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{
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#if LCD_PIXELFORMAT == HORIZONTAL_PACKING
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id = _GREY_MULUQ(_grey_info.width, yd);
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#else
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#if LCD_DEPTH == 1
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id = _GREY_MULUQ(_grey_info.width, yd & ~7) + (~yd & 7);
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#elif LCD_DEPTH == 2
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id = _GREY_MULUQ(_grey_info.width, yd & ~3) + (~yd & 3);
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#endif
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#endif /* LCD_PIXELFORMAT */
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dst = &_grey_info.data[id].value;
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dst_end = dst + _grey_info.width * _GREY_X_ADVANCE;
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do
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{
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*dst = blank;
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dst += _GREY_X_ADVANCE;
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}
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while (dst < dst_end);
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}
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}
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void grey_ub_scroll_down(int count)
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{
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unsigned char *dst, *dst_end, *src;
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int blank, ys, yd, is, id;
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if ((unsigned)count >= (unsigned)_grey_info.height)
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return;
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blank = (_grey_info.drawmode & DRMODE_INVERSEVID) ?
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_grey_info.fg_val : _grey_info.bg_val;
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yd = _grey_info.height - 1;
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for (ys = yd - count; ys >= 0; ys--, yd--)
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{
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#if LCD_PIXELFORMAT == HORIZONTAL_PACKING
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id = _GREY_MULUQ(_grey_info.width, yd);
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is = _GREY_MULUQ(_grey_info.width, ys);
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#else
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#if LCD_DEPTH == 1
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id = _GREY_MULUQ(_grey_info.width, yd & ~7) + (~yd & 7);
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is = _GREY_MULUQ(_grey_info.width, ys & ~7) + (~ys & 7);
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#elif LCD_DEPTH == 2
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id = _GREY_MULUQ(_grey_info.width, yd & ~3) + (~yd & 3);
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is = _GREY_MULUQ(_grey_info.width, ys & ~3) + (~ys & 3);
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#endif
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#endif /* LCD_PIXELFORMAT */
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dst = &_grey_info.data[id].value;
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src = &_grey_info.data[is].value;
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dst_end = dst + _grey_info.width * _GREY_X_ADVANCE;
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do
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{
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*dst = *src;
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dst += _GREY_X_ADVANCE;
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src += _GREY_X_ADVANCE;
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}
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while (dst < dst_end);
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}
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for (; yd >= 0; yd--)
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{
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#if LCD_PIXELFORMAT == HORIZONTAL_PACKING
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id = _GREY_MULUQ(_grey_info.width, yd);
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#else
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#if LCD_DEPTH == 1
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id = _GREY_MULUQ(_grey_info.width, yd & ~7) + (~yd & 7);
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#elif LCD_DEPTH == 2
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id = _GREY_MULUQ(_grey_info.width, yd & ~3) + (~yd & 3);
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#endif
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#endif /* LCD_PIXELFORMAT */
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dst = &_grey_info.data[id].value;
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dst_end = dst + _grey_info.width * _GREY_X_ADVANCE;
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do
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{
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*dst = blank;
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dst += _GREY_X_ADVANCE;
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}
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while (dst < dst_end);
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}
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}
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#endif /* !SIMULATOR */
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