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

1 files changed, 190 insertions, 0 deletions

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;
+}
+