kc3-lang/SDL/src/power/haiku/SDL_syspower.c

• Show log

  Commit

• Hash : 0e45984f
  Author :
  Date : 2015-06-21T17:33:46
  

  Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().

Download

• src/power/haiku/SDL_syspower.c

• /*
    Simple DirectMedia Layer
    Copyright (C) 1997-2015 Sam Lantinga <slouken@libsdl.org>
  
    This software is provided 'as-is', without any express or implied
    warranty.  In no event will the authors be held liable for any damages
    arising from the use of this software.
  
    Permission is granted to anyone to use this software for any purpose,
    including commercial applications, and to alter it and redistribute it
    freely, subject to the following restrictions:
  
    1. The origin of this software must not be misrepresented; you must not
       claim that you wrote the original software. If you use this software
       in a product, an acknowledgment in the product documentation would be
       appreciated but is not required.
    2. Altered source versions must be plainly marked as such, and must not be
       misrepresented as being the original software.
    3. This notice may not be removed or altered from any source distribution.
  */
  #include "../../SDL_internal.h"
  
  /* !!! FIXME: does this thing even work on Haiku? */
  #ifndef SDL_POWER_DISABLED
  #if SDL_POWER_HAIKU
  
  #include <stdio.h>
  #include <stdlib.h>
  #include <unistd.h>
  #include <fcntl.h>
  #include <ctype.h>
  #include <drivers/Drivers.h>
  
  /* These values are from apm.h ... */
  #define APM_DEVICE_PATH "/dev/misc/apm"
  #define APM_FUNC_OFFSET 0x5300
  #define APM_FUNC_GET_POWER_STATUS 10
  #define APM_DEVICE_ALL 1
  #define APM_BIOS_CALL (B_DEVICE_OP_CODES_END + 3)
  
  #include "SDL_power.h"
  
  SDL_bool
  SDL_GetPowerInfo_Haiku(SDL_PowerState * state, int *seconds, int *percent)
  {
      const int fd = open("/dev/misc/apm", O_RDONLY);
      SDL_bool need_details = SDL_FALSE;
      uint16 regs[6];
      uint8 ac_status;
      uint8 battery_status;
      uint8 battery_flags;
      uint8 battery_life;
      uint32 battery_time;
      int rc;
  
      if (fd == -1) {
          return SDL_FALSE;       /* maybe some other method will work? */
      }
  
      memset(regs, '\0', sizeof(regs));
      regs[0] = APM_FUNC_OFFSET + APM_FUNC_GET_POWER_STATUS;
      regs[1] = APM_DEVICE_ALL;
      rc = ioctl(fd, APM_BIOS_CALL, regs);
      close(fd);
  
      if (rc < 0) {
          return SDL_FALSE;
      }
  
      ac_status = regs[1] >> 8;
      battery_status = regs[1] & 0xFF;
      battery_flags = regs[2] >> 8;
      battery_life = regs[2] & 0xFF;
      battery_time = (uint32) regs[3];
  
      /* in theory, _something_ should be set in battery_flags, right? */
      if (battery_flags == 0x00) {        /* older APM BIOS? Less fields. */
          battery_time = 0xFFFF;
          if (battery_status == 0xFF) {
              battery_flags = 0xFF;
          } else {
              battery_flags = (1 << battery_status);
          }
      }
  
      if ((battery_time != 0xFFFF) && (battery_time & (1 << 15))) {
          /* time is in minutes, not seconds */
          battery_time = (battery_time & 0x7FFF) * 60;
      }
  
      if (battery_flags == 0xFF) {        /* unknown state */
          *state = SDL_POWERSTATE_UNKNOWN;
      } else if (battery_flags & (1 << 7)) {      /* no battery */
          *state = SDL_POWERSTATE_NO_BATTERY;
      } else if (battery_flags & (1 << 3)) {      /* charging */
          *state = SDL_POWERSTATE_CHARGING;
          need_details = SDL_TRUE;
      } else if (ac_status == 1) {
          *state = SDL_POWERSTATE_CHARGED;        /* on AC, not charging. */
          need_details = SDL_TRUE;
      } else {
          *state = SDL_POWERSTATE_ON_BATTERY;     /* not on AC. */
          need_details = SDL_TRUE;
      }
  
      *percent = -1;
      *seconds = -1;
      if (need_details) {
          const int pct = (int) battery_life;
          const int secs = (int) battery_time;
  
          if (pct != 255) {       /* 255 == unknown */
              *percent = (pct > 100) ? 100 : pct; /* clamp between 0%, 100% */
          }
          if (secs != 0xFFFF) {   /* 0xFFFF == unknown */
              *seconds = secs;
          }
      }
  
      return SDL_TRUE;            /* the definitive answer if APM driver replied. */
  }
  
  #endif /* SDL_POWER_HAIKU */
  #endif /* SDL_POWER_DISABLED */
  
  /* vi: set ts=4 sw=4 expandtab: */
  

Download