| /**************************************************************************** |
| * apps/graphics/tiff/tiff_internal.h |
| * |
| * Copyright (C) 2011 Gregory Nutt. All rights reserved. |
| * Author: Gregory Nutt <gnutt@nuttx.org> |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * 3. Neither the name NuttX nor the names of its contributors may be |
| * used to endorse or promote products derived from this software |
| * without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
| * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
| * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
| * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
| * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
| * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| * POSSIBILITY OF SUCH DAMAGE. |
| * |
| ****************************************************************************/ |
| |
| #ifndef __APPS_GRAPHICS_TIFF_TIFF_INTERNAL_H |
| #define __APPS_GRAPHICS_TIFF_TIFF_INTERNAL_H |
| |
| /**************************************************************************** |
| * Included Files |
| ****************************************************************************/ |
| |
| #include <nuttx/config.h> |
| |
| #include <sys/types.h> |
| #include <stdint.h> |
| |
| #include <nuttx/nx/nxglib.h> |
| #include "graphics/tiff.h" |
| |
| /**************************************************************************** |
| * Pre-Processor Definitions |
| ****************************************************************************/ |
| /* Image Type ***************************************************************/ |
| |
| #define IMGFLAGS_BILEV_BIT (1 << 0) |
| #define IMGFLAGS_GREY_BIT (1 << 1) |
| #define IMGFLAGS_GREY8_BIT (1 << 2) |
| #define IMGFLAGS_RGB_BIT (1 << 3) |
| #define IMGFLAGS_RGB565_BIT (1 << 4) |
| |
| #define IMGFLAGS_FMT_Y1 (IMGFLAGS_BILEV_BIT) |
| #define IMGFLAGS_FMT_Y4 (IMGFLAGS_GREY_BIT) |
| #define IMGFLAGS_FMT_Y8 (IMGFLAGS_GREY_BIT|IMGFLAGS_GREY8_BIT) |
| #define IMGFLAGS_FMT_RGB16_565 (IMGFLAGS_RGB_BIT) |
| #define IMGFLAGS_FMT_RGB24 (IMGFLAGS_RGB_BIT|IMGFLAGS_RGB565_BIT) |
| |
| #define IMGFLAGS_ISBILEV(f) \ |
| (((f) & IMGFLAGS_BILEV_BIT) != 0) |
| #define IMGFLAGS_ISGREY(f) \ |
| (((f) & IMGFLAGS_GREY_BIT) != 0) |
| #define IMGFLAGS_ISGREY4(f) \ |
| (((f) & (IMGFLAGS_GREY_BIT|IMGFLAGS_GREY8_BIT)) == IMGFLAGS_GREY_BIT) |
| #define IMGFLAGS_ISGREY8(f) \ |
| (((f) & (IMGFLAGS_GREY_BIT|IMGFLAGS_GREY8_BIT)) == (IMGFLAGS_GREY_BIT|IMGFLAGS_GREY8_BIT)) |
| #define IMGFLAGS_ISRGB(f) \ |
| (((f) & IMGFLAGS_FMT_RGB24) != 0) |
| |
| /**************************************************************************** |
| * Public Types |
| ****************************************************************************/ |
| |
| /**************************************************************************** |
| * Public Data |
| ****************************************************************************/ |
| |
| #undef EXTERN |
| #if defined(__cplusplus) |
| #define EXTERN extern "C" |
| extern "C" |
| { |
| #else |
| #define EXTERN extern |
| #endif |
| |
| /**************************************************************************** |
| * Public Functions |
| ****************************************************************************/ |
| |
| /**************************************************************************** |
| * Name: tiff_read |
| * |
| * Description: |
| * Read TIFF data from the specified file |
| * |
| * Input Parameters: |
| * fd - Open file descriptor to read from |
| * buffer - Read-only buffer containing the data to be written |
| * count - The number of bytes to write |
| * |
| * Returned Value: |
| * On success, then number of bytes read; Zero is returned on EOF. |
| * Otherwise, a negated errno value on failure. |
| * |
| ****************************************************************************/ |
| |
| ssize_t tiff_read(int fd, FAR void *buffer, size_t count); |
| |
| /**************************************************************************** |
| * Name: tiff_write |
| * |
| * Description: |
| * Write TIFF data to the specified file |
| * |
| * Input Parameters: |
| * fd - Open file descriptor to write to |
| * buffer - Read-only buffer containing the data to be written |
| * count - The number of bytes to write |
| * |
| * Returned Value: |
| * Zero (OK) on success. A negated errno value on failure. |
| * |
| ****************************************************************************/ |
| |
| int tiff_write(int fd, FAR const void *buffer, size_t count); |
| |
| /**************************************************************************** |
| * Name: tiff_putint16 |
| * |
| * Description: |
| * Write two bytes to the outfile. |
| * |
| * Input Parameters: |
| * fd - File descriptor to be used. |
| * value - The 2-byte, uint16_t value to write |
| * |
| * Returned Value: |
| * Zero (OK) on success. A negated errno value on failure. |
| * |
| ****************************************************************************/ |
| |
| int tiff_putint16(int fd, uint16_t value); |
| |
| /**************************************************************************** |
| * Name: tiff_putint32 |
| * |
| * Description: |
| * Write four bytes to the outfile. |
| * |
| * Input Parameters: |
| * fd - File descriptor to be used. |
| * value - The 4-byte, uint32_t value to write |
| * |
| * Returned Value: |
| * Zero (OK) on success. A negated errno value on failure. |
| * |
| ****************************************************************************/ |
| |
| int tiff_putint32(int fd, uint32_t value); |
| |
| /**************************************************************************** |
| * Name: tiff_putstring |
| * |
| * Description: |
| * Write a string of fixed length to the outfile. |
| * |
| * Input Parameters: |
| * fd - File descriptor to be used. |
| * string - A pointer to the memory containing the string |
| * len - The length of the string (including the NUL terminator) |
| * |
| * Returned Value: |
| * Zero (OK) on success. A negated errno value on failure. |
| * |
| ****************************************************************************/ |
| |
| int tiff_putstring(int fd, FAR const char *string, int len); |
| |
| /**************************************************************************** |
| * Name: tiff_wordalign |
| * |
| * Description: |
| * Pad a file with zeros as necessary to achieve word alignament. |
| * |
| * Input Parameters: |
| * fd - File descriptor to be used. |
| * size - The current size of the file |
| * |
| * Returned Value: |
| * The new size of the file on success. A negated errno value on failure. |
| * |
| ****************************************************************************/ |
| |
| ssize_t tiff_wordalign(int fd, size_t size); |
| |
| #undef EXTERN |
| #if defined(__cplusplus) |
| } |
| #endif |
| |
| #endif /* __APPS_GRAPHICS_TIFF_TIFF_INTERNAL_H */ |