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Diffstat (limited to 'src/devices/machine/spg2xx_video.h')
-rw-r--r-- | src/devices/machine/spg2xx_video.h | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/src/devices/machine/spg2xx_video.h b/src/devices/machine/spg2xx_video.h new file mode 100644 index 00000000000..064e3cb9757 --- /dev/null +++ b/src/devices/machine/spg2xx_video.h @@ -0,0 +1,137 @@ +// license:BSD-3-Clause +// copyright-holders:Ryan Holtz +/***************************************************************************** + + SunPlus SPG2xx-series SoC peripheral emulation (Video) + +**********************************************************************/ + +#ifndef MAME_MACHINE_SPG2XX_VIDEO_H +#define MAME_MACHINE_SPG2XX_VIDEO_H + +#pragma once + +#include "cpu/unsp/unsp.h" +#include "screen.h" + +class spg2xx_video_device : public device_t +{ +public: + spg2xx_video_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock); + + uint32_t screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect); + DECLARE_WRITE_LINE_MEMBER(vblank); + + DECLARE_READ16_MEMBER(video_r); + DECLARE_WRITE16_MEMBER(video_w); + + auto sprlimit_read_callback() { return m_sprlimit_read_cb.bind(); }; + auto rowscrolloffset_read_callback() { return m_rowscrolloffset_read_cb.bind(); }; + + auto write_video_irq_callback() { return m_video_irq_cb.bind(); }; + +protected: + + enum + { + PAGE_ENABLE_MASK = 0x0008, + PAGE_WALLPAPER_MASK = 0x0004, + + SPRITE_ENABLE_MASK = 0x0001, + SPRITE_COORD_TL_MASK = 0x0002, + + PAGE_PRIORITY_FLAG_MASK = 0x3000, + PAGE_PRIORITY_FLAG_SHIFT = 12, + PAGE_TILE_HEIGHT_MASK = 0x00c0, + PAGE_TILE_HEIGHT_SHIFT = 6, + PAGE_TILE_WIDTH_MASK = 0x0030, + PAGE_TILE_WIDTH_SHIFT = 4, + TILE_X_FLIP = 0x0004, + TILE_Y_FLIP = 0x0008 + }; + + + inline void check_video_irq(); + + static const device_timer_id TIMER_SCREENPOS = 2; + + virtual void device_start() override; + virtual void device_reset() override; + virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) override; + + void do_sprite_dma(uint32_t len); + + enum blend_enable_t : bool + { + BlendOff = false, + BlendOn = true + }; + + enum rowscroll_enable_t : bool + { + RowScrollOff = false, + RowScrollOn = true + }; + + enum flipx_t : bool + { + FlipXOff = false, + FlipXOn = true + }; + + void apply_saturation(const rectangle &cliprect); + void apply_fade(const rectangle &cliprect); + + template<blend_enable_t Blend, rowscroll_enable_t RowScroll, flipx_t FlipX> + void draw(const rectangle &cliprect, uint32_t line, uint32_t xoff, uint32_t yoff, uint32_t bitmap_addr, uint16_t tile, int32_t h, int32_t w, uint8_t bpp, uint32_t yflipmask, uint32_t palette_offset); + void draw_page(const rectangle &cliprect, uint32_t scanline, int priority, uint32_t bitmap_addr, uint16_t *regs); + void draw_sprite(const rectangle &cliprect, uint32_t scanline, int priority, uint32_t base_addr); + void draw_sprites(const rectangle &cliprect, uint32_t scanline, int priority); + + uint8_t mix_channel(uint8_t a, uint8_t b); + + uint32_t m_screenbuf[320 * 240]; + uint8_t m_rgb5_to_rgb8[32]; + uint32_t m_rgb555_to_rgb888[0x8000]; + + bool m_hide_page0; + bool m_hide_page1; + bool m_hide_sprites; + bool m_debug_sprites; + bool m_debug_blit; + bool m_debug_palette; + uint8_t m_sprite_index_to_debug; + + uint16_t m_video_regs[0x100]; + + devcb_read16 m_sprlimit_read_cb; + devcb_read16 m_rowscrolloffset_read_cb; + + emu_timer *m_screenpos_timer; + + required_device<unsp_device> m_cpu; + required_device<screen_device> m_screen; + required_shared_ptr<uint16_t> m_scrollram; + required_shared_ptr<uint16_t> m_paletteram; + required_shared_ptr<uint16_t> m_spriteram; + + devcb_write_line m_video_irq_cb; +}; + +class spg24x_video_device : public spg2xx_video_device +{ +public: + template <typename T, typename U> + spg24x_video_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock, T &&cpu_tag, U &&screen_tag) + : spg24x_video_device(mconfig, tag, owner, clock) + { + m_cpu.set_tag(std::forward<T>(cpu_tag)); + m_screen.set_tag(std::forward<U>(screen_tag)); + } + + spg24x_video_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); +}; + +DECLARE_DEVICE_TYPE(SPG24X_VIDEO, spg24x_video_device) + +#endif // MAME_MACHINE_SPG2XX_VIDEO_H |