From d073326b6b16698efc8e897269826449cfc40699 Mon Sep 17 00:00:00 2001 From: Jens Arnold Date: Tue, 6 Jul 2004 23:11:02 +0000 Subject: Added screen dump function to the grayscale lib git-svn-id: svn://svn.rockbox.org/rockbox/trunk@4843 a1c6a512-1295-4272-9138-f99709370657 --- apps/plugins/lib/gray.h | 11 +++ apps/plugins/lib/gray_screendump.c | 141 +++++++++++++++++++++++++++++++++++++ 2 files changed, 152 insertions(+) create mode 100644 apps/plugins/lib/gray_screendump.c (limited to 'apps') diff --git a/apps/plugins/lib/gray.h b/apps/plugins/lib/gray.h index 918d7ecb4a..c8a9afc390 100644 --- a/apps/plugins/lib/gray.h +++ b/apps/plugins/lib/gray.h @@ -181,6 +181,17 @@ void gray_set_background(int brightness); */ void gray_set_drawinfo(int drawmode, int fg_brightness, int bg_brightness); +/*--------------------------------------------------------------------------- + Save the current display content (b&w and grayscale overlay) to an 8-bit + BMP file in the root directory + ---------------------------------------------------------------------------- + * + * This one is rather slow if used with larger bit depths, but it's intended + * primary use is for documenting the grayscale plugins. A much faster version + * would be possible, but would take more than twice the RAM + */ +void gray_screendump(void); + /*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Functions affecting the whole display ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ diff --git a/apps/plugins/lib/gray_screendump.c b/apps/plugins/lib/gray_screendump.c new file mode 100644 index 0000000000..8968007039 --- /dev/null +++ b/apps/plugins/lib/gray_screendump.c @@ -0,0 +1,141 @@ +/*************************************************************************** +* __________ __ ___. +* Open \______ \ ____ ____ | | _\_ |__ _______ ___ +* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / +* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < +* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ +* \/ \/ \/ \/ \/ +* $Id$ +* +* Grayscale framework +* gray_screendump() function +* +* This is a generic framework to use grayscale display within Rockbox +* plugins. It obviously does not work for the player. +* +* Copyright (C) 2004 Jens Arnold +* +* All files in this archive are subject to the GNU General Public License. +* See the file COPYING in the source tree root for full license agreement. +* +* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY +* KIND, either express or implied. +* +****************************************************************************/ + +#ifndef SIMULATOR /* not for simulator by now */ +#include "plugin.h" + +#ifdef HAVE_LCD_BITMAP /* and also not for the Player */ +#include "gray.h" + +static unsigned char bmpheader[] = +{ + 0x42, 0x4d, 0xba, 0x1c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xba, 0x00, + 0x00, 0x00, 0x28, 0x00, 0x00, 0x00, 0x70, 0x00, 0x00, 0x00, 0x40, 0x00, + 0x00, 0x00, 0x01, 0x00, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1c, + 0x00, 0x00, 0xc4, 0x0e, 0x00, 0x00, 0xc4, 0x0e, 0x00, 0x00, 0x21, 0x00, + 0x00, 0x00, 0x21, 0x00, 0x00, 0x00 +}; + +static unsigned char linebuf[LCD_WIDTH]; + +/*--------------------------------------------------------------------------- + Save the current display content (b&w and grayscale overlay) to an 8-bit + BMP file in the root directory + ---------------------------------------------------------------------------- + * + * This one is rather slow if used with larger bit depths, but it's intended + * primary use is for documenting the grayscale plugins. A much faster version + * would be possible, but would take more than twice the RAM + */ +void gray_screendump(void) +{ + int fh, i, bright; + int x, y, by, mask; + int gx, gby; + + char filename[MAX_PATH]; + struct tm *tm = _gray_rb->get_time(); + + unsigned char *lcdptr, *grayptr, *grayptr2; + + _gray_rb->snprintf(filename, MAX_PATH, + "/graydump %04d-%02d-%02d %02d-%02d-%02d.bmp", + tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday, + tm->tm_hour, tm->tm_min, tm->tm_sec); + fh = _gray_rb->creat(filename, O_WRONLY); + + if (fh < 0) + return; + + _gray_rb->write(fh, bmpheader, sizeof(bmpheader)); /* write header */ + + /* build clut, always 33 entries */ + + linebuf[3] = 0; + + for (i = 0; i < 33; i++) + { + bright = MIN(i, _graybuf->depth); + linebuf[0] = linebuf[2] = MULU16(0x90, bright) / _graybuf->depth; + linebuf[1] = MULU16(0xee, bright) / _graybuf->depth; + _gray_rb->write(fh, linebuf, 4); + } + + /* 8-bit BMP image goes bottom -> top */ + + for (y = LCD_HEIGHT - 1; y >= 0; y--) + { + _gray_rb->memset(linebuf, 32, sizeof(linebuf)); /* max. brightness */ + + mask = 1 << (y & 7); + by = y / 8; + lcdptr = _gray_rb->lcd_framebuffer + MULU16(LCD_WIDTH, by); + gby = by - _graybuf->by; + + if ((_graybuf->flags & _GRAY_RUNNING) + && (unsigned) gby < (unsigned) _graybuf->bheight) + { + /* line contains grayscale (and maybe b&w) graphics */ + grayptr = _graybuf->data + MULU16(_graybuf->width, gby); + + for (x = 0; x < LCD_WIDTH; x++) + { + if (*lcdptr++ & mask) + linebuf[x] = 0; + + gx = x - _graybuf->x; + + if ((unsigned) gx < (unsigned) _graybuf->width) + { + bright = 0; + grayptr2 = grayptr + gx; + + for (i = 0; i < _graybuf->depth; i++) + { + if (!(*grayptr2 & mask)) + bright++; + grayptr2 += _graybuf->plane_size; + } + linebuf[x] = bright; + } + } + } + else + { + /* line contains only b&w graphics */ + for (x = 0; x < LCD_WIDTH; x++) + if (*lcdptr++ & mask) + linebuf[x] = 0; + } + + _gray_rb->write(fh, linebuf, sizeof(linebuf)); + } + + _gray_rb->close(fh); +} + +#endif // #ifdef HAVE_LCD_BITMAP +#endif // #ifndef SIMULATOR + -- cgit v1.2.3