1#ifndef VIDEO_SOFTWARE_H
  2#define VIDEO_SOFTWARE_H
  3
  4#include "gba-video.h"
  5
  6#include <pthread.h>
  7
  8#ifdef COLOR_16_BIT
  9typedef uint16_t color_t;
 10#else
 11typedef uint32_t color_t;
 12#endif
 13
 14struct GBAVideoSoftwareBackground {
 15	int index;
 16	int enabled;
 17	int priority;
 18	uint32_t charBase;
 19	int mosaic;
 20	int multipalette;
 21	uint32_t screenBase;
 22	int overflow;
 23	int size;
 24	int target1;
 25	int target2;
 26	uint16_t x;
 27	uint16_t y;
 28	int32_t refx;
 29	int32_t refy;
 30	int16_t dx;
 31	int16_t dmx;
 32	int16_t dy;
 33	int16_t dmy;
 34	int32_t sx;
 35	int32_t sy;
 36};
 37
 38enum BlendEffect {
 39	BLEND_NONE = 0,
 40	BLEND_ALPHA = 1,
 41	BLEND_BRIGHTEN = 2,
 42	BLEND_DARKEN = 3
 43};
 44
 45enum {
 46#ifdef COLOR_16_BIT
 47#ifdef COLOR_5_6_5
 48	GBA_COLOR_WHITE = 0xFFDF,
 49#else
 50	GBA_COLOR_WHITE = 0x7FFF,
 51#endif
 52#else
 53	GBA_COLOR_WHITE = 0x00F8F8F8,
 54#endif
 55	OFFSET_PRIORITY = 29
 56};
 57
 58enum PixelFlags {
 59	FLAG_FINALIZED = 0x80000000,
 60	FLAG_PRIORITY = 0x60000000,
 61	FLAG_IS_BACKGROUND = 0x10000000,
 62	FLAG_UNWRITTEN = 0x08000000,
 63	FLAG_TARGET_1 = 0x04000000,
 64	FLAG_TARGET_2 = 0x02000000,
 65	FLAG_OBJWIN = 0x01000000,
 66
 67	FLAG_ORDER_MASK = 0xF8000000
 68};
 69
 70union WindowRegion {
 71	struct {
 72		uint8_t end;
 73		uint8_t start;
 74	};
 75	uint16_t packed;
 76};
 77
 78union WindowControl {
 79	struct {
 80		unsigned bg0Enable : 1;
 81		unsigned bg1Enable : 1;
 82		unsigned bg2Enable : 1;
 83		unsigned bg3Enable : 1;
 84		unsigned objEnable : 1;
 85		unsigned blendEnable : 1;
 86		unsigned : 2;
 87	};
 88	uint8_t packed;
 89	int8_t priority;
 90};
 91
 92#define MAX_WINDOW 5
 93
 94struct Window {
 95	uint8_t endX;
 96	union WindowControl control;
 97};
 98
 99struct GBAVideoSoftwareRenderer {
100	struct GBAVideoRenderer d;
101
102	color_t* outputBuffer;
103	unsigned outputBufferStride;
104
105	union GBARegisterDISPCNT dispcnt;
106
107	uint32_t row[VIDEO_HORIZONTAL_PIXELS];
108	uint32_t spriteLayer[VIDEO_HORIZONTAL_PIXELS];
109
110	// BLDCNT
111	unsigned target1Obj;
112	unsigned target1Bd;
113	unsigned target2Obj;
114	unsigned target2Bd;
115	enum BlendEffect blendEffect;
116	color_t normalPalette[512];
117	color_t variantPalette[512];
118
119	uint16_t blda;
120	uint16_t bldb;
121	uint16_t bldy;
122
123	union {
124		struct {
125			unsigned bgH : 4;
126			unsigned bgV : 4;
127			unsigned objH : 4;
128			unsigned objV : 4;
129		};
130		uint16_t packed;
131	} mosaic;
132
133	struct WindowN {
134		union WindowRegion h;
135		union WindowRegion v;
136		union WindowControl control;
137	} winN[2];
138
139	union WindowControl winout;
140	union WindowControl objwin;
141
142	union WindowControl currentWindow;
143
144	int nWindows;
145	struct Window windows[MAX_WINDOW];
146
147	struct GBAVideoSoftwareBackground bg[4];
148
149	int start;
150	int end;
151};
152
153void GBAVideoSoftwareRendererCreate(struct GBAVideoSoftwareRenderer* renderer);
154
155#endif