Revert accidental tree commit. Sorry for that.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@16576 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Jens Arnold
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2 changed files with 0 additions and 234 deletions
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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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* Copyright (C) 2002 by Linus Nielsen Feltzing
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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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/*
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2008-02-24 Jens Arnold: minimalistic version for charcell displays
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "inttypes.h"
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#include "debug.h"
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#include "lcd.h"
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#include "file.h"
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#include "config.h"
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#include "system.h"
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#include "bmp.h"
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#include "lcd.h"
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#ifdef __GNUC__
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#define STRUCT_PACKED __attribute__((packed))
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#else
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#define STRUCT_PACKED
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#pragma pack (push, 2)
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#endif
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/* BMP header structure */
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struct bmp_header {
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uint16_t type; /* signature - 'BM' */
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uint32_t size; /* file size in bytes */
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uint16_t reserved1; /* 0 */
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uint16_t reserved2; /* 0 */
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uint32_t off_bits; /* offset to bitmap */
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uint32_t struct_size; /* size of this struct (40) */
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int32_t width; /* bmap width in pixels */
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int32_t height; /* bmap height in pixels */
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uint16_t planes; /* num planes - always 1 */
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uint16_t bit_count; /* bits per pixel */
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uint32_t compression; /* compression flag */
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uint32_t size_image; /* image size in bytes */
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int32_t x_pels_per_meter; /* horz resolution */
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int32_t y_pels_per_meter; /* vert resolution */
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uint32_t clr_used; /* 0 -> color table size */
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uint32_t clr_important; /* important color count */
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} STRUCT_PACKED;
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union rgb_union {
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struct { /* Little endian */
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unsigned char blue;
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unsigned char green;
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unsigned char red;
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unsigned char reserved;
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};
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uint32_t raw;
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};
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/* little endian functions */
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static inline unsigned readshort(uint16_t *value)
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{
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unsigned char* bytes = (unsigned char*) value;
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return (unsigned)bytes[0] | ((unsigned)bytes[1] << 8);
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}
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static inline uint32_t readlong(uint32_t *value)
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{
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unsigned char* bytes = (unsigned char*) value;
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return (uint32_t)bytes[0] | ((uint32_t)bytes[1] << 8) |
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((uint32_t)bytes[2] << 16) | ((uint32_t)bytes[3] << 24);
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}
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static inline unsigned brightness(union rgb_union color)
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{
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return (3 * (unsigned)color.red + 6 * (unsigned)color.green
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+ (unsigned)color.blue) / 10;
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}
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/******************************************************************************
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* read_bmp_file()
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*
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* Reads a BMP file and puts the data in rockbox format in *data.
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*
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*****************************************************************************/
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int read_bmp_file(const char* filename,
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unsigned char *bitmap,
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int maxsize)
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{
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struct bmp_header bmph;
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int fd, ret;
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int width, height, depth;
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int row, rowstart, rowstop, rowstep;
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unsigned char invert;
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unsigned char bmpbuf[4]; /* Buffer for one line */
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uint32_t palette[2];
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fd = open(filename, O_RDONLY);
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/* Exit if file opening failed */
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if (fd < 0)
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{
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DEBUGF("read_bmp_file: can't open '%s', rc: %d\n", filename, fd);
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return fd * 10 - 1;
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}
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/* read fileheader */
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ret = read(fd, &bmph, sizeof(struct bmp_header));
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if (ret < 0)
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return ret * 10 - 2;
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if (ret != sizeof(struct bmp_header)) {
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DEBUGF("read_bmp_file: can't read BMP header.");
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return -3;
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}
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width = readlong(&bmph.width);
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if (width > 8)
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{
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DEBUGF("read_bmp_file: Bitmap too wide (%d pixels, max is 8)\n", width);
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return -4;
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}
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depth = readshort(&bmph.bit_count);
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if (depth != 1)
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{
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DEBUGF("read_bmp_fd: Wrong depth (%d, must be 1)\n", depth);
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return -5;
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}
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height = readlong(&bmph.height);
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if (height < 0)
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{ /* Top-down BMP file */
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height = -height;
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rowstart = 0;
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rowstop = height;
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rowstep = 1;
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}
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else
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{ /* normal BMP */
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rowstart = height - 1;
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rowstop = -1;
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rowstep = -1;
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}
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/* Check if this fits the buffer */
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if (height > maxsize)
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{
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DEBUGF("read_bmp_fd: Bitmap too high for buffer: %d bytes.\n", height);
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return -6;
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}
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if (read(fd, palette, 2 * sizeof(uint32_t))
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!= 2 * (int)sizeof(uint32_t))
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{
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DEBUGF("read_bmp_fd: Can't read color palette\n");
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return -7;
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}
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invert = (brightness((union rgb_union)palette[1])
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> brightness((union rgb_union)palette[0]))
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? 0xff : 0x00;
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/* Search to the beginning of the image data */
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lseek(fd, (off_t)readlong(&bmph.off_bits), SEEK_SET);
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memset(bitmap, 0, height);
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/* loop to read rows and put them to buffer */
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for (row = rowstart; row != rowstop; row += rowstep)
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{
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/* read one row */
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ret = read(fd, bmpbuf, 4);
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if (ret != 4)
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{
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DEBUGF("read_bmp_fd: error reading image, read returned: %d "
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"expected: 4\n", ret);
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return -9;
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}
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bitmap[row] = bmpbuf[0] ^ invert;
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}
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DEBUGF("totalsize: %d\n", totalsize);
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close(fd);
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return height; /* return the used buffer size. */
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}
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@ -1,35 +0,0 @@
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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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* Copyright (C) 2002 by Daniel Stenberg
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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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#ifndef _BMP_H_
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#define _BMP_H_
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/*********************************************************************
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* read_bmp_file(), minimalistic version for charcell displays
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*
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* Reads a 1 bit BMP file and puts the data in a horizontal packed
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* 1 bit-per-pixel char array. Width must be <= 8 pixels.
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* Returns < 0 for error, or number of bytes used from the bitmap
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* buffer, which equals bitmap height.
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*
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**********************************************/
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int read_bmp_file(const char* filename,
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unsigned char *bitmap,
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int maxsize);
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#endif
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