/* 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., 51 Franklin St, Fifth Floor, * Boston, MA 02110-1301, 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; }