Add beginning of a TIFF file creation library

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3964 42af7a65-404d-4744-a932-0658087f49c3

7 files changed, 839 insertions, 0 deletions

diff --git a/apps/graphics/Makefile b/apps/graphics/Makefile
new file mode 100644
index 000000000..01775a2e3
--- /dev/null
+++ b/apps/graphics/Makefile
@@ -0,0 +1,72 @@
+############################################################################
+# apps/graphics/Makefile
+#
+#   Copyright (C) 2011 Gregory Nutt. All rights reserved.
+#   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+#
+# 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.
+#
+############################################################################
+
+-include $(TOPDIR)/.config	# Current configuration
+
+# Sub-directories
+
+SUBDIRS = tiff
+
+# Sub-directories that might need context setup
+
+CNTXTDIRS = 
+
+all: nothing
+.PHONY: nothing context depend clean distclean
+
+nothing:
+
+context:
+	@for dir in $(CNTXTDIRS) ; do \
+		$(MAKE) -C $$dir context TOPDIR="$(TOPDIR)" APPDIR="$(APPDIR)"; \
+	done
+
+depend:
+	@for dir in $(SUBDIRS) ; do \
+		$(MAKE) -C $$dir depend TOPDIR="$(TOPDIR)" APPDIR="$(APPDIR)"; \
+	done
+
+clean:
+	@for dir in $(SUBDIRS) ; do \
+		$(MAKE) -C $$dir clean TOPDIR="$(TOPDIR)" APPDIR="$(APPDIR)"; \
+	done
+
+distclean: clean
+	@for dir in $(SUBDIRS) ; do \
+		$(MAKE) -C $$dir distclean TOPDIR="$(TOPDIR)" APPDIR="$(APPDIR)"; \
+	done
+
+-include Make.dep
+
diff --git a/apps/graphics/tiff/Makefile b/apps/graphics/tiff/Makefile
new file mode 100644
index 000000000..9fc762c9c
--- /dev/null
+++ b/apps/graphics/tiff/Makefile
@@ -0,0 +1,93 @@
+############################################################################
+# apps/graphics/tiff/Makefile
+#
+#   Copyright (C) 2011 Gregory Nutt. All rights reserved.
+#   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+#
+# 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.
+#
+############################################################################
+
+-include $(TOPDIR)/.config
+-include $(TOPDIR)/Make.defs
+include $(APPDIR)/Make.defs
+
+# NuttX NX Graphics Example.
+
+ASRCS		=
+CSRCS		= tiff_addstrip.c  tiff_finalize.c  tiff_initialize.c  tiff_utils.c
+
+AOBJS		= $(ASRCS:.S=$(OBJEXT))
+COBJS		= $(CSRCS:.c=$(OBJEXT))
+
+SRCS		= $(ASRCS) $(CSRCS)
+OBJS		= $(AOBJS) $(COBJS)
+
+ifeq ($(WINTOOL),y)
+  BIN		= "${shell cygpath -w  $(APPDIR)/libapps$(LIBEXT)}"
+else
+  BIN		= "$(APPDIR)/libapps$(LIBEXT)"
+endif
+
+ROOTDEPPATH	= --dep-path .
+
+# Common build
+
+VPATH		= 
+
+all: .built
+.PHONY: context clean depend distclean
+
+$(AOBJS): %$(OBJEXT): %.S
+	$(call ASSEMBLE, $<, $@)
+
+$(COBJS): %$(OBJEXT): %.c
+	$(call COMPILE, $<, $@)
+
+.built: $(OBJS)
+	@( for obj in $(OBJS) ; do \
+		$(call ARCHIVE, $(BIN), $${obj}); \
+	done ; )
+	@touch .built
+
+context:
+
+.depend: Makefile $(SRCS)
+	@$(MKDEP) $(ROOTDEPPATH) $(CC) -- $(CFLAGS) -- $(SRCS) >Make.dep
+	@touch $@
+
+depend: .depend
+
+clean:
+	@rm -f *.o *~ .*.swp .built
+	$(call CLEAN)
+
+distclean: clean
+	@rm -f Make.dep .depend
+
+-include Make.dep
diff --git a/apps/graphics/tiff/tiff_addstrip.c b/apps/graphics/tiff/tiff_addstrip.c
new file mode 100644
index 000000000..360c71fc8
--- /dev/null
+++ b/apps/graphics/tiff/tiff_addstrip.c
@@ -0,0 +1,96 @@
+/****************************************************************************
+ * apps/graphics/tiff/tiff_addstrip.c
+ *
+ *   Copyright (C) 2011 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * 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.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <assert.h>
+#include <errno.h>
+#include <debug.h>
+
+#include <apps/tiff.h>
+
+#include "tiff_internal.h"
+
+/****************************************************************************
+ * Pre-Processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Types
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: tiff_addstrip
+ *
+ * Description:
+ *   Add an image data strip.
+ *
+ * Input Parameters:
+ *   info    - A pointer to the caller allocated parameter passing/TIFF state instance.
+ *   buffer  - A buffer containing a single row of data.
+ *   npixels - The number of pixels (not necessarily bytes) in the row of data.
+ *
+ * Returned Value:
+ *   Zero (OK) on success.  A negated errno value on failure.
+ *
+ ****************************************************************************/
+
+int tiff_addstrip(FAR struct tiff_info_s *info, FAR uint8_t *buffer,
+                  nxgl_coord_t npixels)
+{
+#warning "Missing logic"
+  return -ENOSYS;
+}
+
diff --git a/apps/graphics/tiff/tiff_finalize.c b/apps/graphics/tiff/tiff_finalize.c
new file mode 100644
index 000000000..de9011833
--- /dev/null
+++ b/apps/graphics/tiff/tiff_finalize.c
@@ -0,0 +1,118 @@
+/****************************************************************************
+ * apps/graphics/tiff/tiff_finalize.c
+ *
+ *   Copyright (C) 2011 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * 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.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <unistd.h>
+#include <assert.h>
+#include <errno.h>
+#include <debug.h>
+
+#include <apps/tiff.h>
+
+#include "tiff_internal.h"
+
+/****************************************************************************
+ * Pre-Processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Types
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: tiff_finalize
+ *
+ * Description:
+ *   Finalize the TIFF output file, completing the TIFF file creation steps.
+ *
+ * Input Parameters:
+ *   info - A pointer to the caller allocated parameter passing/TIFF state
+ *          instance.
+ *
+ * Returned Value:
+ *   Zero (OK) on success.  A negated errno value on failure.
+ *
+ ****************************************************************************/
+
+int tiff_finalize(FAR struct tiff_info_s *info)
+{
+  int ret = -EINVAL;
+
+  DEBUGASSERT(info && info->outfd >= 0 && info->tmp1fd >= 0 && info->tmp2fd >= 0);
+
+  /* Fix-up the StripOffsets and StripByteCounts IFD entries in the outfile */
+#warning "Missing logic"
+
+  /* Append the StripOffsets and StripByteCounts entries to the outfile */
+#warning "Missing logic"
+
+  /* Append the strip image data to the outfile */
+#warning "Missing logic"
+
+  /* Close all files */
+
+  (void)close(info->outfd);
+  (void)close(info->tmp1fd);
+  (void)close(info->tmp2fd);
+  info->outfd  = -1;
+  info->tmp1fd = -1;
+  info->tmp2fd = -1;
+
+  /* And remove the temporary files */
+#warning "Missing logic"
+  return ret;
+}
+
diff --git a/apps/graphics/tiff/tiff_initialize.c b/apps/graphics/tiff/tiff_initialize.c
new file mode 100644
index 000000000..8998f37c4
--- /dev/null
+++ b/apps/graphics/tiff/tiff_initialize.c
@@ -0,0 +1,190 @@
+/****************************************************************************
+ * apps/graphics/tiff/tiff_initialize.c
+ *
+ *   Copyright (C) 2011 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * 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.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <unistd.h>
+#include <fcntl.h>
+#include <assert.h>
+#include <errno.h>
+#include <debug.h>
+
+#include <apps/tiff.h>
+
+#include "tiff_internal.h"
+
+/****************************************************************************
+ * Pre-Processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Types
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: tiff_writeheader
+ *
+ * Description:
+ *   Setup to create a new TIFF file.
+ *
+ * Input Parameters:
+ *   info - A pointer to the caller allocated parameter passing/TIFF state instance.
+ *
+ * Returned Value:
+ *   Zero (OK) on success.  A negated errno value on failure.
+ *
+ ****************************************************************************/
+
+static inline int tiff_writeheader(FAR struct tiff_info_s *info)
+{
+  struct tiff_header_s hdr;
+  int ret;
+
+  /* 0-1: Byte order */
+
+#ifdef CONFIG_ENDIAN_BIG
+  hdr.order[0] = 'M';  /* "MM"=big endian */
+  hdr.order[1] = 'M';
+#else
+  hdr.order[0] = 'I';  /* "II"=little endian */
+  hdr.order[1] = 'I';
+#endif
+
+  /* 2-3: 42 in appropriate byte order */
+
+  tiff_put16(hdr.magic, 42);
+
+  /* 4-7: Offset to the first IFD */
+  
+  tiff_put16(hdr.offset, sizeof(struct tiff_header_s));
+
+  /* Write the header to the output file */
+
+  ret = tiff_write(info->outfd, &hdr, sizeof(struct tiff_header_s));
+  if (ret == OK)
+    {
+      info->outsize = sizeof(struct tiff_header_s);
+    }
+  return ret;
+}
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: tiff_initialize
+ *
+ * Description:
+ *   Setup to create a new TIFF file.
+ *
+ * Input Parameters:
+ *   info - A pointer to the caller allocated parameter passing/TIFF state instance.
+ *
+ * Returned Value:
+ *   Zero (OK) on success.  A negated errno value on failure.
+ *
+ ****************************************************************************/
+
+int tiff_initialize(FAR struct tiff_info_s *info)
+{
+  int ret = -EINVAL;
+
+  DEBUGASSERT(info && info->outfile && info->tmpfile1 && info->tmpfile2);
+
+  /* Open all output files */
+
+  info->outfd = open(info->outfile, O_WRONLY|O_CREAT|O_TRUNC, 0666);
+  if (info->outfd < 0)
+    {
+      gdbg("Failed to open %s for writing: %d\n", info->outfile, errno);
+      goto errout;
+    }
+
+  info->tmp1fd = open(info->tmpfile1, O_WRONLY|O_CREAT|O_TRUNC, 0666);
+  if (info->tmp1fd < 0)
+    {
+      gdbg("Failed to open %s for writing: %d\n", info->tmpfile1, errno);
+      goto errout_with_outfd;
+    }
+
+  info->tmp2fd = open(info->tmpfile1, O_WRONLY|O_CREAT|O_TRUNC, 0666);
+  if (info->tmp2fd < 0)
+    {
+      gdbg("Failed to open %s for writing: %d\n", info->tmpfile1, errno);
+      goto errout_with_tmp1fd;
+    }
+
+  /* Write the TIFF header data to the outfile */
+
+  ret = tiff_writeheader(info);
+  if (ret < 0)
+    {
+      goto errout_with_tmp2fd;
+    }
+
+  /* Write the IFD data to the outfile */
+#warning "Missing Logic"
+  return OK;
+
+errout_with_tmp2fd:
+  (void)close(info->tmp2fd);
+  info->tmp2fd = -1;
+errout_with_tmp1fd:
+  (void)close(info->tmp1fd);
+  info->tmp1fd = -1;
+errout_with_outfd:
+  (void)close(info->outfd);
+  info->outfd = -1;
+errout:
+  return ret;
+}
+
diff --git a/apps/graphics/tiff/tiff_internal.h b/apps/graphics/tiff/tiff_internal.h
new file mode 100644
index 000000000..a4a8eb7fa
--- /dev/null
+++ b/apps/graphics/tiff/tiff_internal.h
@@ -0,0 +1,99 @@
+/****************************************************************************
+ * apps/graphics/tiff/tiff_internal.h
+ *
+ *   Copyright (C) 2010 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * 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_GRPHICS_TIFF_TIFF_INTERNAL_H
+#define __APPS_GRPHICS_TIFF_TIFF_INTERNAL_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <sys/types.h>
+#include <stdint.h>
+
+#include <nuttx/nx/nxglib.h>
+#include <apps/tiff.h>
+
+/****************************************************************************
+ * Pre-Processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+#undef EXTERN
+#if defined(__cplusplus)
+#define EXTERN extern "C"
+extern "C" {
+#else
+#define EXTERN extern
+#endif
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * 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.
+ *
+ ****************************************************************************/
+
+EXTERN int tiff_write(int fd, FAR void *buffer, size_t count);
+
+#undef EXTERN
+#if defined(__cplusplus)
+}
+#endif
+
+#endif  /* __APPS_GRPHICS_TIFF_TIFF_INTERNAL_H */
+
diff --git a/apps/graphics/tiff/tiff_utils.c b/apps/graphics/tiff/tiff_utils.c
new file mode 100644
index 000000000..13f9e6801
--- /dev/null
+++ b/apps/graphics/tiff/tiff_utils.c
@@ -0,0 +1,171 @@
+/****************************************************************************
+ * apps/graphics/tiff/tiff_utils.c
+ *
+ *   Copyright (C) 2011 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * 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.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <unistd.h>
+#include <assert.h>
+#include <errno.h>
+#include <debug.h>
+
+#include <apps/tiff.h>
+
+#include "tiff_internal.h"
+
+/****************************************************************************
+ * Pre-Processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Types
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: tiff_put16 and tiff_put32
+ *
+ * Description:
+ *   Put 16 and 32 values in the correct byte order at the specified position.
+ *
+ * Input Parameters:
+ *   dest - The location to store the multi-byte data
+ *   value - The value to be stored
+ *
+ * Returned Value:
+ *   None
+ *
+ ****************************************************************************/
+
+void tiff_put16(FAR uint8_t *dest, uint16_t value)
+{
+#ifdef CONFIG_ENDIAN_BIG
+  *dest++ = (uint8_t)(value >> 8);
+  *dest   = (uint8_t)(value & 0xff);
+#else
+  *dest++ = (uint8_t)(value & 0xff);
+  *dest   = (uint8_t)(value >> 8);
+#endif
+}
+
+void tiff_put32(FAR uint8_t *dest, uint32_t value)
+{
+#ifdef CONFIG_ENDIAN_BIG
+  tiff_put16(dest,   (uint16_t)(value >> 16));
+  tiff_put16(dest+2, (uint16_t)(value & 0xffff));
+#else
+  tiff_put16(dest,   (uint16_t)(value & 0xffff));
+  tiff_put16(dest+2, (uint16_t)(value >> 16));
+#endif
+}
+
+/****************************************************************************
+ * 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 void *buffer, size_t count)
+{
+  ssize_t nbytes;
+  int errval;
+
+  /* This loop retries the write until either: (1) it completes successfully,
+   * or (2) until an irrecoverble error occurs.
+   */
+
+  while (count > 0)
+    {
+      /* Do the write */
+
+      nbytes = write(fd, buffer, count);
+
+      /* Check for an error */
+
+      if (nbytes < 0)
+        {
+          /* EINTR is not an error.. this just means that the write was
+           * interrupted by a signal.
+           */
+
+          errval = errno;
+          if (errval != EINTR)
+            {
+              /* Other errors are bad news and we will break out with an error */
+
+              return -errval;
+            }
+        }
+
+      /* What if the the write returns some number of bytes other than the requested number? */
+
+      else
+        {
+          DEBUGASSERT(nbytes < count && nbytes != 0);
+          count -= nbytes;
+        }
+    }
+
+  return OK;
+}
+