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/* 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.
*/
/*
* Unless otherwise indicated, Source Code is licensed under MIT license.
* See further explanation attached in License Statement (distributed in the file
* LICENSE).
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is furnished to do
* so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#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);
/**
* prop_copy_fixed_size_string:
* @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.
*
* Copies a string of bytes without placing its size at the beginning.
*
* 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);
}
/**
* prop_copy_size_string:
*
* @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.
*
* 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)
*
* 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;
}
/**
* prop_copy_null_terminated_string:
* @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.
*
* Copies a string including its null terminating char to an array.
*
* 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;
}
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