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|
/*
+--------------------------------------------------------------------------+
| CHStone : a suite of benchmark programs for C-based High-Level Synthesis |
| ======================================================================== |
| |
| * Collected and Modified : Y. Hara, H. Tomiyama, S. Honda, |
| H. Takada and K. Ishii |
| Nagoya University, Japan |
| |
| * Remark : |
| 1. This source code is modified to unify the formats of the benchmark |
| programs in CHStone. |
| 2. Test vectors are added for CHStone. |
| 3. If "main_result" is 0 at the end of the program, the program is |
| correctly executed. |
| 4. Please follow the copyright of each benchmark program. |
+--------------------------------------------------------------------------+
*/
/* getvlc.c, variable length decoding */
/* Copyright (C) 1996, MPEG Software Simulation Group. All Rights Reserved. */
/*
* Disclaimer of Warranty
*
* These software programs are available to the user without any license fee or
* royalty on an "as is" basis. The MPEG Software Simulation Group disclaims
* any and all warranties, whether express, implied, or statuary, including any
* implied warranties or merchantability or of fitness for a particular
* purpose. In no event shall the copyright-holder be liable for any
* incidental, punitive, or consequential damages of any kind whatsoever
* arising from the use of these programs.
*
* This disclaimer of warranty extends to the user of these programs and user's
* customers, employees, agents, transferees, successors, and assigns.
*
* The MPEG Software Simulation Group does not represent or warrant that the
* programs furnished hereunder are free of infringement of any third-party
* patents.
*
* Commercial implementations of MPEG-1 and MPEG-2 video, including shareware,
* are subject to royalty fees to patent holders. Many of these patents are
* general enough such that they are unavoidable regardless of implementation
* design.
*
*/
int
Get_motion_code ()
{
int code;
if (Get_Bits1 ())
{
return 0;
}
if ((code = Show_Bits (9)) >= 64)
{
code >>= 6;
Flush_Buffer (MVtab0[code][1]);
return Get_Bits1 ()? -MVtab0[code][0] : MVtab0[code][0];
}
if (code >= 24)
{
code >>= 3;
Flush_Buffer (MVtab1[code][1]);
return Get_Bits1 ()? -MVtab1[code][0] : MVtab1[code][0];
}
if ((code -= 12) < 0)
return 0;
Flush_Buffer (MVtab2[code][1]);
return Get_Bits1 ()? -MVtab2[code][0] : MVtab2[code][0];
}
/* get differential motion vector (for dual prime prediction) */
int
Get_dmvector ()
{
if (Get_Bits (1))
{
return Get_Bits (1) ? -1 : 1;
}
else
{
return 0;
}
}
|
