* Copyright (c) 2004-2007 Marcus Overhagen <marcus@overhagen.de>
*
* 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 <stdio.h>
#include "pes.h"
status_t
pes_extract(const uint8 *pes_data, size_t pes_size, const uint8 **data, size_t *size)
{
if (pes_size <= 9)
return B_ERROR;
if (pes_data[0] || pes_data[1] || pes_data[2] != 1)
return B_ERROR;
size_t header_size = 9 + pes_data[8];
if (pes_size <= header_size)
return B_ERROR;
pes_data += header_size;
pes_size -= header_size;
*data = pes_data;
*size = pes_size;
return B_OK;
}
status_t
pes_stream_id(const uint8 *pes_data, size_t pes_size, int *stream_id)
{
if (pes_size <= 9)
return B_ERROR;
if (pes_data[0] || pes_data[1] || pes_data[2] != 1)
return B_ERROR;
*stream_id = pes_data[3];
return B_OK;
}
