1#ifndef VIDEO_SOFTWARE_H
  2#define VIDEO_SOFTWARE_H
  3
  4#include "gba-video.h"
  5
  6#include <pthread.h>
  7
  8struct GBAVideoSoftwareBackground {
  9	int index;
 10	int enabled;
 11	int priority;
 12	uint32_t charBase;
 13	int mosaic;
 14	int multipalette;
 15	uint32_t screenBase;
 16	int overflow;
 17	int size;
 18	int target1;
 19	int target2;
 20	uint16_t x;
 21	uint16_t y;
 22	int32_t refx;
 23	int32_t refy;
 24	int16_t dx;
 25	int16_t dmx;
 26	int16_t dy;
 27	int16_t dmy;
 28	int32_t sx;
 29	int32_t sy;
 30};
 31
 32enum BlendEffect {
 33	BLEND_NONE = 0,
 34	BLEND_ALPHA = 1,
 35	BLEND_BRIGHTEN = 2,
 36	BLEND_DARKEN = 3
 37};
 38
 39enum {
 40	GBA_COLOR_WHITE = 0x00F8F8F8,
 41	OFFSET_PRIORITY = 29
 42};
 43
 44enum PixelFlags {
 45	FLAG_FINALIZED = 0x80000000,
 46	FLAG_PRIORITY = 0x60000000,
 47	FLAG_IS_BACKGROUND = 0x10000000,
 48	FLAG_UNWRITTEN = 0x08000000,
 49	FLAG_TARGET_1 = 0x04000000,
 50	FLAG_TARGET_2 = 0x02000000,
 51	FLAG_OBJWIN = 0x01000000
 52};
 53
 54union WindowRegion {
 55	struct {
 56		uint8_t end;
 57		uint8_t start;
 58	};
 59	uint16_t packed;
 60};
 61
 62union WindowControl {
 63	struct {
 64		unsigned bg0Enable : 1;
 65		unsigned bg1Enable : 1;
 66		unsigned bg2Enable : 1;
 67		unsigned bg3Enable : 1;
 68		unsigned objEnable : 1;
 69		unsigned blendEnable : 1;
 70		unsigned : 2;
 71	};
 72	uint8_t packed;
 73	int8_t priority;
 74};
 75
 76#define MAX_WINDOW 5
 77
 78struct Window {
 79	uint8_t endX;
 80	union WindowControl control;
 81};
 82
 83struct GBAVideoSoftwareRenderer {
 84	struct GBAVideoRenderer d;
 85
 86	uint32_t* outputBuffer;
 87	unsigned outputBufferStride;
 88
 89	union GBARegisterDISPCNT dispcnt;
 90
 91	uint32_t row[VIDEO_HORIZONTAL_PIXELS];
 92	uint32_t spriteLayer[VIDEO_HORIZONTAL_PIXELS];
 93
 94	// BLDCNT
 95	unsigned target1Obj;
 96	unsigned target1Bd;
 97	unsigned target2Obj;
 98	unsigned target2Bd;
 99	enum BlendEffect blendEffect;
100	uint32_t normalPalette[512];
101	uint32_t variantPalette[512];
102
103	uint16_t blda;
104	uint16_t bldb;
105	uint16_t bldy;
106
107	union WindowRegion win0H;
108	union WindowRegion win0V;
109	union WindowRegion win1H;
110	union WindowRegion win1V;
111
112	union WindowControl win0;
113	union WindowControl win1;
114	union WindowControl winout;
115	union WindowControl objwin;
116
117	union WindowControl currentWindow;
118
119	int nWindows;
120	struct Window windows[MAX_WINDOW];
121
122	struct GBAVideoSoftwareBackground bg[4];
123
124	int start;
125	int end;
126
127	uint32_t enabledBitmap[4];
128
129	pthread_mutex_t mutex;
130	pthread_cond_t upCond;
131	pthread_cond_t downCond;
132};
133
134void GBAVideoSoftwareRendererCreate(struct GBAVideoSoftwareRenderer* renderer);
135
136#endif