f8e08440f7
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5143 42af7a65-404d-4744-a932-0658087f49c3
212 lines
7.2 KiB
C
212 lines
7.2 KiB
C
/****************************************************************************
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* apps/graphics/tiff/tiff_internal.h
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*
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* Copyright (C) 2011 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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#ifndef __APPS_GRAPHICS_TIFF_TIFF_INTERNAL_H
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#define __APPS_GRAPHICS_TIFF_TIFF_INTERNAL_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <sys/types.h>
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#include <stdint.h>
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#include <nuttx/nx/nxglib.h>
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#include <apps/tiff.h>
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/****************************************************************************
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* Pre-Processor Definitions
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****************************************************************************/
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/* Image Type ***************************************************************/
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#define IMGFLAGS_BILEV_BIT (1 << 0)
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#define IMGFLAGS_GREY_BIT (1 << 1)
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#define IMGFLAGS_GREY8_BIT (1 << 2)
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#define IMGFLAGS_RGB_BIT (1 << 3)
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#define IMGFLAGS_RGB565_BIT (1 << 4)
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#define IMGFLAGS_FMT_Y1 (IMGFLAGS_BILEV_BIT)
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#define IMGFLAGS_FMT_Y4 (IMGFLAGS_GREY_BIT)
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#define IMGFLAGS_FMT_Y8 (IMGFLAGS_GREY_BIT|IMGFLAGS_GREY8_BIT)
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#define IMGFLAGS_FMT_RGB16_565 (IMGFLAGS_RGB_BIT)
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#define IMGFLAGS_FMT_RGB24 (IMGFLAGS_RGB_BIT|IMGFLAGS_RGB565_BIT)
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#define IMGFLAGS_ISBILEV(f) \
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(((f) & IMGFLAGS_BILEV_BIT) != 0)
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#define IMGFLAGS_ISGREY(f) \
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(((f) & IMGFLAGS_GREY_BIT) != 0)
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#define IMGFLAGS_ISGREY4(f) \
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(((f) & (IMGFLAGS_GREY_BIT|IMGFLAGS_GREY8_BIT)) == IMGFLAGS_GREY_BIT)
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#define IMGFLAGS_ISGREY8(f) \
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(((f) & (IMGFLAGS_GREY_BIT|IMGFLAGS_GREY8_BIT)) == (IMGFLAGS_GREY_BIT|IMGFLAGS_GREY8_BIT))
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#define IMGFLAGS_ISRGB(f) \
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(((f) & IMGFLAGS_FMT_RGB24) != 0)
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/****************************************************************************
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* Public Types
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****************************************************************************/
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/****************************************************************************
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* Public Data
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****************************************************************************/
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#undef EXTERN
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#if defined(__cplusplus)
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#define EXTERN extern "C"
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extern "C" {
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#else
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#define EXTERN extern
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#endif
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: tiff_read
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*
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* Description:
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* Read TIFF data from the specified file
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*
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* Input Parameters:
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* fd - Open file descriptor to read from
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* buffer - Read-only buffer containing the data to be written
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* count - The number of bytes to write
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*
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* Returned Value:
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* On success, then number of bytes read; Zero is returned on EOF.
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* Otherwise, a negated errno value on failure.
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*
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****************************************************************************/
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EXTERN ssize_t tiff_read(int fd, FAR void *buffer, size_t count);
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/****************************************************************************
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* Name: tiff_write
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*
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* Description:
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* Write TIFF data to the specified file
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*
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* Input Parameters:
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* fd - Open file descriptor to write to
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* buffer - Read-only buffer containing the data to be written
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* count - The number of bytes to write
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*
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* Returned Value:
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* Zero (OK) on success. A negated errno value on failure.
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*
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****************************************************************************/
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EXTERN int tiff_write(int fd, FAR const void *buffer, size_t count);
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/****************************************************************************
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* Name: tiff_putint16
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*
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* Description:
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* Write two bytes to the outfile.
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*
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* Input Parameters:
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* fd - File descriptor to be used.
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* value - The 2-byte, uint16_t value to write
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*
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* Returned Value:
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* Zero (OK) on success. A negated errno value on failure.
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*
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****************************************************************************/
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EXTERN int tiff_putint16(int fd, uint16_t value);
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/****************************************************************************
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* Name: tiff_putint32
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*
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* Description:
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* Write four bytes to the outfile.
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*
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* Input Parameters:
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* fd - File descriptor to be used.
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* value - The 4-byte, uint32_t value to write
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*
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* Returned Value:
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* Zero (OK) on success. A negated errno value on failure.
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*
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****************************************************************************/
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EXTERN int tiff_putint32(int fd, uint32_t value);
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/****************************************************************************
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* Name: tiff_putstring
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*
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* Description:
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* Write a string of fixed length to the outfile.
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*
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* Input Parameters:
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* fd - File descriptor to be used.
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* string - A pointer to the memory containing the string
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* len - The length of the string (including the NUL terminator)
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*
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* Returned Value:
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* Zero (OK) on success. A negated errno value on failure.
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*
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****************************************************************************/
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EXTERN int tiff_putstring(int fd, FAR const char *string, int len);
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/****************************************************************************
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* Name: tiff_wordalign
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*
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* Description:
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* Pad a file with zeros as necessary to achieve word alignament.
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*
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* Input Parameters:
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* fd - File descriptor to be used.
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* size - The current size of the file
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*
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* Returned Value:
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* The new size of the file on success. A negated errno value on failure.
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*
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****************************************************************************/
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EXTERN ssize_t tiff_wordalign(int fd, size_t size);
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#undef EXTERN
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#if defined(__cplusplus)
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}
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#endif
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#endif /* __APPS_GRAPHICS_TIFF_TIFF_INTERNAL_H */
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