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revision 1.30, Tue Jul 16 11:15:15 2002 UTC revision 1.34, Wed Sep 4 22:07:07 2002 UTC
# Line 3  Line 3 
3   *  XVID MPEG-4 VIDEO CODEC   *  XVID MPEG-4 VIDEO CODEC
4   *  - Native API implementation  -   *  - Native API implementation  -
5   *   *
6     *  Copyright(C) 2001-2002 Peter Ross <pross@cs.rmit.edu.au>
7     *
8   *  This program is an implementation of a part of one or more MPEG-4   *  This program is an implementation of a part of one or more MPEG-4
9   *  Video tools as specified in ISO/IEC 14496-2 standard.  Those intending   *  Video tools as specified in ISO/IEC 14496-2 standard.  Those intending
10   *  to use this software module in hardware or software products are   *  to use this software module in hardware or software products are
# Line 28  Line 30 
30   *   *
31   ****************************************************************************/   ****************************************************************************/
32    
 /*****************************************************************************  
  *  
  *  History  
  *  
  *      - 23.06.2002    added XVID_CPU_CHKONLY  
  *  - 17.03.2002        Added interpolate8x8_halfpel_hv_xmm  
  *  - 22.12.2001  API change: added xvid_init() - Isibaar  
  *  - 16.12.2001        inital version; (c)2001 peter ross <pross@cs.rmit.edu.au>  
  *  
  *  $Id$  
  *  
  ****************************************************************************/  
   
33  #include "xvid.h"  #include "xvid.h"
34  #include "decoder.h"  #include "decoder.h"
35  #include "encoder.h"  #include "encoder.h"
# Line 58  Line 47 
47  #include "utils/timer.h"  #include "utils/timer.h"
48  #include "bitstream/mbcoding.h"  #include "bitstream/mbcoding.h"
49    
50    #if defined(ARCH_X86) && defined(EXPERIMENTAL_SSE2_CODE)
51    
52    #ifdef WIN32
53    #include <windows.h>
54    #else
55    #include <signal.h>
56    #include <setjmp.h>
57    #endif
58    
59    
60    #ifndef WIN32
61    
62    static jmp_buf mark;
63    
64    static void
65    sigill_handler(int signal)
66    {
67       longjmp(mark, 1);
68    }
69    #endif
70    
71    
72    /*
73     * Calls the funcptr, and returns whether SIGILL (illegal instruction) was signalled
74     * Return values:
75     * -1 : could not determine
76     * 0  : SIGILL was *not* signalled
77     * 1  : SIGILL was signalled
78     */
79    
80    int
81    sigill_check(void (*func)())
82    {
83    #ifdef WIN32
84            _try {
85                    func();
86            }
87            _except(EXCEPTION_EXECUTE_HANDLER) {
88    
89                    if (_exception_code() == STATUS_ILLEGAL_INSTRUCTION)
90                            return 1;
91            }
92            return 0;
93    #else
94        void * old_handler;
95        int jmpret;
96    
97    
98        old_handler = signal(SIGILL, sigill_handler);
99        if (old_handler == SIG_ERR)
100        {
101            return -1;
102        }
103    
104        jmpret = setjmp(mark);
105        if (jmpret == 0)
106        {
107            func();
108        }
109    
110        signal(SIGILL, old_handler);
111    
112        return jmpret;
113    #endif
114    }
115    #endif
116    
117  /*****************************************************************************  /*****************************************************************************
118   * XviD Init Entry point   * XviD Init Entry point
119   *   *
# Line 89  Line 145 
145          /* Inform the client the core build - unused because we're still alpha */          /* Inform the client the core build - unused because we're still alpha */
146          init_param->core_build = 1000;          init_param->core_build = 1000;
147    
         if ((init_param->cpu_flags & XVID_CPU_CHKONLY))  
         {  
                 init_param->cpu_flags = check_cpu_features();  
                 return XVID_ERR_OK;  
         }  
   
148          /* Do we have to force CPU features  ? */          /* Do we have to force CPU features  ? */
149          if ((init_param->cpu_flags & XVID_CPU_FORCE) > 0) {          if ((init_param->cpu_flags & XVID_CPU_FORCE)) {
150    
151                  cpu_flags = init_param->cpu_flags;                  cpu_flags = init_param->cpu_flags;
152    
153          } else {          } else {
154    
155                  cpu_flags = check_cpu_features();                  cpu_flags = check_cpu_features();
156    
157    #if defined(ARCH_X86) && defined(EXPERIMENTAL_SSE2_CODE)
158                    if ((cpu_flags & XVID_CPU_SSE) && sigill_check(sse_os_trigger))
159                            cpu_flags &= ~XVID_CPU_SSE;
160    
161                    if ((cpu_flags & XVID_CPU_SSE2) && sigill_check(sse2_os_trigger))
162                            cpu_flags &= ~XVID_CPU_SSE2;
163    #endif
164            }
165    
166            if ((init_param->cpu_flags & XVID_CPU_CHKONLY))
167            {
168                  init_param->cpu_flags = cpu_flags;                  init_param->cpu_flags = cpu_flags;
169                    return XVID_ERR_OK;
170          }          }
171    
172            init_param->cpu_flags = cpu_flags;
173    
174    
175          /* Initialize the function pointers */          /* Initialize the function pointers */
176          idct_int32_init();          idct_int32_init();
177          init_vlc_tables();          init_vlc_tables();
# Line 166  Line 234 
234          /* Functions used in motion estimation algorithms */          /* Functions used in motion estimation algorithms */
235          calc_cbp = calc_cbp_c;          calc_cbp = calc_cbp_c;
236          sad16    = sad16_c;          sad16    = sad16_c;
         sad16bi  = sad16bi_c;  
237          sad8     = sad8_c;          sad8     = sad8_c;
238            sad16bi  = sad16bi_c;
239            sad8bi   = sad8bi_c;
240          dev16    = dev16_c;          dev16    = dev16_c;
241    
242          Halfpel8_Refine = Halfpel8_Refine_c;          Halfpel8_Refine = Halfpel8_Refine_c;
243    
244  #ifdef ARCH_X86  #ifdef ARCH_X86
# Line 223  Line 293 
293                  calc_cbp = calc_cbp_mmx;                  calc_cbp = calc_cbp_mmx;
294                  sad16    = sad16_mmx;                  sad16    = sad16_mmx;
295                  sad8     = sad8_mmx;                  sad8     = sad8_mmx;
296                    sad16bi = sad16bi_mmx;
297                    sad8bi  = sad8bi_mmx;
298                  dev16    = dev16_mmx;                  dev16    = dev16_mmx;
299    
300          }          }
301    
302            /* these 3dnow functions are faster than mmx, but slower than xmm. */
303            if ((cpu_flags & XVID_CPU_3DNOW) > 0) {
304    
305                    /* ME functions */
306                    sad16bi = sad16bi_3dn;
307                    sad8bi  = sad8bi_3dn;
308            }
309    
310    
311          if ((cpu_flags & XVID_CPU_MMXEXT) > 0) {          if ((cpu_flags & XVID_CPU_MMXEXT) > 0) {
312    
313                  /* Inverse DCT */                  /* Inverse DCT */
# Line 249  Line 330 
330    
331                  /* ME functions */                  /* ME functions */
332                  sad16 = sad16_xmm;                  sad16 = sad16_xmm;
                 sad16bi = sad16bi_xmm;  
333                  sad8  = sad8_xmm;                  sad8  = sad8_xmm;
334                    sad16bi = sad16bi_xmm;
335                    sad8bi  = sad8bi_xmm;
336                  dev16 = dev16_xmm;                  dev16 = dev16_xmm;
337    
338          }          }

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