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	GBA_COLOR_WHITE = 0x7FFF,
 48#else
 49	GBA_COLOR_WHITE = 0x00F8F8F8,
 50#endif
 51	OFFSET_PRIORITY = 29
 52};
 53
 54enum PixelFlags {
 55	FLAG_FINALIZED = 0x80000000,
 56	FLAG_PRIORITY = 0x60000000,
 57	FLAG_IS_BACKGROUND = 0x10000000,
 58	FLAG_UNWRITTEN = 0x08000000,
 59	FLAG_TARGET_1 = 0x04000000,
 60	FLAG_TARGET_2 = 0x02000000,
 61	FLAG_OBJWIN = 0x01000000,
 62
 63	FLAG_ORDER_MASK = 0xF8000000
 64};
 65
 66union WindowRegion {
 67	struct {
 68		uint8_t end;
 69		uint8_t start;
 70	};
 71	uint16_t packed;
 72};
 73
 74union WindowControl {
 75	struct {
 76		unsigned bg0Enable : 1;
 77		unsigned bg1Enable : 1;
 78		unsigned bg2Enable : 1;
 79		unsigned bg3Enable : 1;
 80		unsigned objEnable : 1;
 81		unsigned blendEnable : 1;
 82		unsigned : 2;
 83	};
 84	uint8_t packed;
 85	int8_t priority;
 86};
 87
 88#define MAX_WINDOW 5
 89
 90struct Window {
 91	uint8_t endX;
 92	union WindowControl control;
 93};
 94
 95struct GBAVideoSoftwareRenderer {
 96	struct GBAVideoRenderer d;
 97
 98	color_t* outputBuffer;
 99	unsigned outputBufferStride;
100
101	union GBARegisterDISPCNT dispcnt;
102
103	uint32_t row[VIDEO_HORIZONTAL_PIXELS];
104	uint32_t spriteLayer[VIDEO_HORIZONTAL_PIXELS];
105
106	// BLDCNT
107	unsigned target1Obj;
108	unsigned target1Bd;
109	unsigned target2Obj;
110	unsigned target2Bd;
111	enum BlendEffect blendEffect;
112	color_t normalPalette[512];
113	color_t variantPalette[512];
114
115	uint16_t blda;
116	uint16_t bldb;
117	uint16_t bldy;
118
119	struct WindowN {
120		union WindowRegion h;
121		union WindowRegion v;
122		union WindowControl control;
123	} winN[2];
124
125	union WindowControl winout;
126	union WindowControl objwin;
127
128	union WindowControl currentWindow;
129
130	int nWindows;
131	struct Window windows[MAX_WINDOW];
132
133	struct GBAVideoSoftwareBackground bg[4];
134
135	int start;
136	int end;
137
138	uint32_t enabledBitmap[4];
139};
140
141void GBAVideoSoftwareRendererCreate(struct GBAVideoSoftwareRenderer* renderer);
142
143#endif