1 files changed, 183 insertions, 0 deletions
diff --git a/gst/qtmux/properties.c b/gst/qtmux/properties.c
new file mode 100644
index 00000000..48a960a6
--- /dev/null
+++ b/gst/qtmux/properties.c
@@ -0,0 +1,183 @@
+/* Quicktime muxer plugin for GStreamer
+ * Copyright (C) 2008 Thiago Sousa Santos <thiagoss@embedded.ufcg.edu.br>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#include "properties.h"
+
+/* if needed, re-allocate buffer to ensure size bytes can be written into it
+ * at offset */
+void
+prop_copy_ensure_buffer (guint8 ** buffer, guint64 * bsize, guint64 * offset,
+    guint64 size)
+{
+  if (buffer && *bsize - *offset < size) {
+    *bsize += size + 10 * 1024;
+    *buffer = g_realloc (*buffer, *bsize);
+  }
+}
+
+static guint64
+copy_func (void *prop, guint size, guint8 ** buffer, guint64 * bsize,
+    guint64 * offset)
+{
+  if (buffer) {
+    prop_copy_ensure_buffer (buffer, bsize, offset, size);
+    memcpy (*buffer + *offset, prop, size);
+  }
+  *offset += size;
+  return size;
+}
+
+#define INT_ARRAY_COPY_FUNC_FAST(name, datatype) 			\
+guint64 prop_copy_ ## name ## _array (datatype *prop, guint size,	\
+    guint8 ** buffer, guint64 * bsize, guint64 * offset) { 		\
+  return copy_func (prop, sizeof (datatype) * size, buffer, bsize, offset);\
+}
+
+#define INT_ARRAY_COPY_FUNC(name, datatype) 				\
+guint64 prop_copy_ ## name ## _array (datatype *prop, guint size,	\
+    guint8 ** buffer, guint64 * bsize, guint64 * offset) { 		\
+  guint i;								\
+									\
+  for (i = 0; i < size; i++) {						\
+    prop_copy_ ## name (prop[i], buffer, bsize, offset);		\
+  }									\
+  return sizeof (datatype) * size;					\
+}
+
+/* INTEGERS */
+guint64
+prop_copy_uint8 (guint8 prop, guint8 ** buffer, guint64 * size,
+    guint64 * offset)
+{
+  return copy_func (&prop, sizeof (guint8), buffer, size, offset);
+}
+
+guint64
+prop_copy_uint16 (guint16 prop, guint8 ** buffer, guint64 * size,
+    guint64 * offset)
+{
+  prop = GUINT16_TO_BE (prop);
+  return copy_func (&prop, sizeof (guint16), buffer, size, offset);
+}
+
+guint64
+prop_copy_uint32 (guint32 prop, guint8 ** buffer, guint64 * size,
+    guint64 * offset)
+{
+  prop = GUINT32_TO_BE (prop);
+  return copy_func (&prop, sizeof (guint32), buffer, size, offset);
+}
+
+guint64
+prop_copy_uint64 (guint64 prop, guint8 ** buffer, guint64 * size,
+    guint64 * offset)
+{
+  prop = GUINT64_TO_BE (prop);
+  return copy_func (&prop, sizeof (guint64), buffer, size, offset);
+}
+
+guint64
+prop_copy_int32 (gint32 prop, guint8 ** buffer, guint64 * size,
+    guint64 * offset)
+{
+  prop = GINT32_TO_BE (prop);
+  return copy_func (&prop, sizeof (guint32), buffer, size, offset);
+}
+
+/* uint8 can use direct copy in any case, and may be used for large quantity */
+INT_ARRAY_COPY_FUNC_FAST (uint8, guint8);
+/* not used in large quantity anyway */
+INT_ARRAY_COPY_FUNC (uint16, guint16);
+INT_ARRAY_COPY_FUNC (uint32, guint32);
+INT_ARRAY_COPY_FUNC (uint64, guint64);
+
+/* FOURCC */
+guint64
+prop_copy_fourcc (guint32 prop, guint8 ** buffer, guint64 * size,
+    guint64 * offset)
+{
+  prop = GINT32_TO_LE (prop);
+  return copy_func (&prop, sizeof (guint32), buffer, size, offset);
+}
+
+INT_ARRAY_COPY_FUNC (fourcc, guint32);
+
+/**
+ * Copies a string of bytes without placing its size at the beginning.
+ *
+ * @string: the string to be copied
+ * @str_size: size of the string
+ * @buffer: the array to copy the string to
+ * @offset: the position in the buffer array.
+ * This value is updated to the point right after the copied string.
+ *
+ * Returns: the number of bytes copied
+ */
+guint64
+prop_copy_fixed_size_string (guint8 * string, guint str_size, guint8 ** buffer,
+    guint64 * size, guint64 * offset)
+{
+  return copy_func (string, str_size * sizeof (guint8), buffer, size, offset);
+}
+
+/**
+ * Copies a string and its size to an array. Example:
+ * string = 'abc\0'
+ * result in the array: [3][a][b][c]  (each [x] represents a position)
+ *
+ * @string: the string to be copied
+ * @str_size: size of the string
+ * @buffer: the array to copy the string to
+ * @offset: the position in the buffer array.
+ * This value is updated to the point right after the copied string.
+ *
+ * Returns: the number of bytes copied
+ */
+guint64
+prop_copy_size_string (guint8 * string, guint str_size, guint8 ** buffer,
+    guint64 * size, guint64 * offset)
+{
+  guint64 original_offset = *offset;
+
+  prop_copy_uint8 (str_size, buffer, size, offset);
+  prop_copy_fixed_size_string (string, str_size, buffer, size, offset);
+  return *offset - original_offset;
+}
+
+/**
+ * Copies a string including its null terminating char to an array.
+ *
+ * @string: the string to be copied
+ * @buffer: the array to copy the string to
+ * @offset: the position in the buffer array.
+ * This value is updated to the point right after the copied string.
+ *
+ * Returns: the number of bytes copied
+ */
+guint64
+prop_copy_null_terminated_string (gchar * string, guint8 ** buffer,
+    guint64 * size, guint64 * offset)
+{
+  guint64 original_offset = *offset;
+  guint len = strlen (string);
+
+  prop_copy_fixed_size_string ((guint8 *) string, len, buffer, size, offset);
+  prop_copy_uint8 ('\0', buffer, size, offset);
+  return *offset - original_offset;
+}