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Merge pull request #1306 from GiuseppeGorgoglione/master

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gba: 1st batch of code refactorings
This commit is contained in:
R. Belmont 2016-08-26 08:13:02 -04:00 committed by GitHub
commit 1f22ce8bda
3 changed files with 237 additions and 380 deletions
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581
src/devices/video/gba_lcd.cpp
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17
src/devices/video/gba_lcd.h
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@ -60,10 +60,15 @@ class gba_registers
protected:
static constexpr unsigned REG_BASE = BASE;
UINT32 &WORD(unsigned x) { return m_regs[(x - REG_BASE) / 4]; } // 32-bit Register
const UINT32 &WORD(unsigned x) const { return m_regs[(x - REG_BASE) / 4]; } // 32-bit Register
UINT16 HWHI(unsigned x) const { return UINT16(WORD(x) >> 16); } // 16-bit Register, Upper Half-Word
UINT16 HWLO(unsigned x) const { return UINT16(WORD(x)); } // 16-bit Register, Lower Half-Word
// 32-bit Register
UINT32 &WORD(unsigned x) { return m_regs[(x - REG_BASE) / 4]; }
const UINT32 &WORD(unsigned x) const { return m_regs[(x - REG_BASE) / 4]; }
// 16-bit Register, Upper Half-Word
UINT16 HWHI(unsigned x) const { return UINT16(WORD(x) >> 16); }
// 16-bit Register, Lower Half-Word
UINT16 HWLO(unsigned x) const { return UINT16(WORD(x)); }
UINT32 &WORD_SET(unsigned x, UINT32 y) { return WORD(x) |= y; }
UINT32 &HWHI_SET(unsigned x, UINT16 y) { return WORD(x) |= UINT32(y) << 16; }
@ -131,6 +136,10 @@ protected:
virtual machine_config_constructor device_mconfig_additions() const override;
private:
UINT32 bg_screen_base(UINT32 bgxcnt);
UINT32 bg_char_base(UINT32 bgxcnt);
void bg_screen_size(UINT16 bgxcnt, bool text, int &width, int &height);
inline void update_mask(UINT8* mask, int mode, int submode, UINT32* obj_win, UINT8 inwin0, UINT8 inwin1, UINT8 in0_mask, UINT8 in1_mask, UINT8 out_mask);
void draw_modes(int mode, int submode, int y, UINT32* line0, UINT32* line1, UINT32* line2, UINT32* line3, UINT32* lineOBJ, UINT32* lineOBJWin, UINT32* lineMix, int bpp);
void draw_roz_bitmap_scanline(UINT32 *scanline, int ypos, UINT32 enablemask, UINT32 ctrl, INT32 X, INT32 Y, INT32 PA, INT32 PB, INT32 PC, INT32 PD, INT32 *currentx, INT32 *currenty, int changed, int depth);

19
src/emu/emucore.h
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@ -346,6 +346,25 @@ inline Dest downcast(Source &src)
return static_cast<Dest>(src);
}
// template function which takes a strongly typed enumerator and returns its value as a compile-time constant
template <typename E>
using enable_enum_t = typename std::enable_if_t<std::is_enum<E>::value, typename std::underlying_type_t<E>>;
template <typename E>
constexpr inline enable_enum_t<E>
underlying_value(E e) noexcept
{
return static_cast< typename std::underlying_type<E>::type >( e );
}
// template function which takes an integral value and returns its representation as enumerator (even strongly typed)
template <typename E , typename T>
constexpr inline typename std::enable_if_t<std::is_enum<E>::value && std::is_integral<T>::value, E>
enum_value(T value) noexcept
{
return static_cast<E>(value);
}
//**************************************************************************