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      1 /*
      2  *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
      3  *
      4  *  Use of this source code is governed by a BSD-style license
      5  *  that can be found in the LICENSE file in the root of the source
      6  *  tree. An additional intellectual property rights grant can be found
      7  *  in the file PATENTS.  All contributing project authors may
      8  *  be found in the AUTHORS file in the root of the source tree.
      9  */
     10 
     11 #include "vpx_config.h"
     12 #include "vp8_rtcd.h"
     13 #if ARCH_ARM
     14 #include "vpx_ports/arm.h"
     15 #elif ARCH_X86 || ARCH_X86_64
     16 #include "vpx_ports/x86.h"
     17 #elif ARCH_PPC
     18 #include "vpx_ports/ppc.h"
     19 #endif
     20 #include "vp8/common/onyxc_int.h"
     21 #include "vp8/common/systemdependent.h"
     22 
     23 #if CONFIG_MULTITHREAD
     24 #if HAVE_UNISTD_H && !defined(__OS2__)
     25 #include <unistd.h>
     26 #elif defined(_WIN32)
     27 #include <windows.h>
     28 typedef void(WINAPI *PGNSI)(LPSYSTEM_INFO);
     29 #elif defined(__OS2__)
     30 #define INCL_DOS
     31 #define INCL_DOSSPINLOCK
     32 #include <os2.h>
     33 #endif
     34 #endif
     35 
     36 #if CONFIG_MULTITHREAD
     37 static int get_cpu_count() {
     38   int core_count = 16;
     39 
     40 #if HAVE_UNISTD_H && !defined(__OS2__)
     41 #if defined(_SC_NPROCESSORS_ONLN)
     42   core_count = (int)sysconf(_SC_NPROCESSORS_ONLN);
     43 #elif defined(_SC_NPROC_ONLN)
     44   core_count = (int)sysconf(_SC_NPROC_ONLN);
     45 #endif
     46 #elif defined(_WIN32)
     47   {
     48 #if _WIN32_WINNT >= 0x0501
     49     SYSTEM_INFO sysinfo;
     50     GetNativeSystemInfo(&sysinfo);
     51 #else
     52     PGNSI pGNSI;
     53     SYSTEM_INFO sysinfo;
     54 
     55     /* Call GetNativeSystemInfo if supported or
     56      * GetSystemInfo otherwise. */
     57 
     58     pGNSI = (PGNSI)GetProcAddress(GetModuleHandle(TEXT("kernel32.dll")),
     59                                   "GetNativeSystemInfo");
     60     if (pGNSI != NULL)
     61       pGNSI(&sysinfo);
     62     else
     63       GetSystemInfo(&sysinfo);
     64 #endif
     65 
     66     core_count = (int)sysinfo.dwNumberOfProcessors;
     67   }
     68 #elif defined(__OS2__)
     69   {
     70     ULONG proc_id;
     71     ULONG status;
     72 
     73     core_count = 0;
     74     for (proc_id = 1;; ++proc_id) {
     75       if (DosGetProcessorStatus(proc_id, &status)) break;
     76 
     77       if (status == PROC_ONLINE) core_count++;
     78     }
     79   }
     80 #else
     81 /* other platforms */
     82 #endif
     83 
     84   return core_count > 0 ? core_count : 1;
     85 }
     86 #endif
     87 
     88 void vp8_machine_specific_config(VP8_COMMON *ctx) {
     89 #if CONFIG_MULTITHREAD
     90   ctx->processor_core_count = get_cpu_count();
     91 #else
     92   (void)ctx;
     93 #endif /* CONFIG_MULTITHREAD */
     94 
     95 #if ARCH_ARM
     96   ctx->cpu_caps = arm_cpu_caps();
     97 #elif ARCH_X86 || ARCH_X86_64
     98   ctx->cpu_caps = x86_simd_caps();
     99 #elif ARCH_PPC
    100   ctx->cpu_caps = ppc_simd_caps();
    101 #endif
    102 }
    103