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/*****************************************************************
* gmerlin-avdecoder - a general purpose multimedia decoding library
*
* Copyright (c) 2001 - 2012 Members of the Gmerlin project
* gmerlin-general@lists.sourceforge.net
* http://gmerlin.sourceforge.net
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
* *****************************************************************/
#include <avdec_private.h>
#include <qt.h>
int bgav_qt_read_fixed32(bgav_input_context_t * ctx,
float * ret)
{
uint32_t a, b, c, d;
uint8_t data[4];
if(bgav_input_read_data(ctx, data, 4) < 4)
return 0;
a = data[0];
b = data[1];
c = data[2];
d = data[3];
a = (a << 8) + b;
b = (c << 8) + d;
if(b)
*ret = (float)a + (float)b / 65536;
else
*ret = a;
return 1;
}
int bgav_qt_read_fixed16(bgav_input_context_t * ctx,
float * ret)
{
unsigned char data[2];
if(bgav_input_read_data(ctx, data, 2) < 2)
return 0;
if(data[1])
*ret = (float)data[0] + (float)data[1] / 256;
else
*ret = (float)data[0];
return 1;
}
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