1#include "video-software.h"
 2
 3#include "gba.h"
 4
 5static void GBAVideoSoftwareRendererInit(struct GBAVideoRenderer* renderer);
 6static void GBAVideoSoftwareRendererDeinit(struct GBAVideoRenderer* renderer);
 7static uint16_t GBAVideoSoftwareRendererWriteVideoRegister(struct GBAVideoRenderer* renderer, uint32_t address, uint16_t value);
 8static void GBAVideoSoftwareRendererDrawScanline(struct GBAVideoRenderer* renderer, int y);
 9static void GBAVideoSoftwareRendererFinishFrame(struct GBAVideoRenderer* renderer);
10
11void GBAVideoSoftwareRendererCreate(struct GBAVideoSoftwareRenderer* renderer) {
12	renderer->d.init = GBAVideoSoftwareRendererInit;
13	renderer->d.deinit = GBAVideoSoftwareRendererDeinit;
14	renderer->d.writeVideoRegister = GBAVideoSoftwareRendererWriteVideoRegister;
15	renderer->d.drawScanline = GBAVideoSoftwareRendererDrawScanline;
16	renderer->d.finishFrame = GBAVideoSoftwareRendererFinishFrame;
17
18	{
19		pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
20		renderer->mutex = mutex;
21		pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
22		renderer->cond = cond;
23	}
24}
25
26static void GBAVideoSoftwareRendererInit(struct GBAVideoRenderer* renderer) {
27	struct GBAVideoSoftwareRenderer* softwareRenderer = (struct GBAVideoSoftwareRenderer*) renderer;
28
29	pthread_mutex_init(&softwareRenderer->mutex, 0);
30	pthread_cond_init(&softwareRenderer->cond, 0);
31}
32
33static void GBAVideoSoftwareRendererDeinit(struct GBAVideoRenderer* renderer) {
34	struct GBAVideoSoftwareRenderer* softwareRenderer = (struct GBAVideoSoftwareRenderer*) renderer;
35}
36
37static uint16_t GBAVideoSoftwareRendererWriteVideoRegister(struct GBAVideoRenderer* renderer, uint32_t address, uint16_t value) {
38	struct GBAVideoSoftwareRenderer* softwareRenderer = (struct GBAVideoSoftwareRenderer*) renderer;
39	return value;
40}
41
42static void GBAVideoSoftwareRendererDrawScanline(struct GBAVideoRenderer* renderer, int y) {
43	struct GBAVideoSoftwareRenderer* softwareRenderer = (struct GBAVideoSoftwareRenderer*) renderer;
44	int x;
45	uint16_t* row = &softwareRenderer->outputBuffer[softwareRenderer->outputBufferStride * y];
46	for (x = 0; x < 16; ++x) {
47		row[(x * 15) + 0] = renderer->palette[x + (y / 5) * 16];
48		row[(x * 15) + 1] = renderer->palette[x + (y / 5) * 16];
49		row[(x * 15) + 2] = renderer->palette[x + (y / 5) * 16];
50		row[(x * 15) + 3] = renderer->palette[x + (y / 5) * 16];
51		row[(x * 15) + 4] = renderer->palette[x + (y / 5) * 16];
52		row[(x * 15) + 5] = renderer->palette[x + (y / 5) * 16];
53		row[(x * 15) + 6] = renderer->palette[x + (y / 5) * 16];
54		row[(x * 15) + 7] = renderer->palette[x + (y / 5) * 16];
55		row[(x * 15) + 8] = renderer->palette[x + (y / 5) * 16];
56		row[(x * 15) + 9] = renderer->palette[x + (y / 5) * 16];
57		row[(x * 15) + 10] = renderer->palette[x + (y / 5) * 16];
58		row[(x * 15) + 11] = renderer->palette[x + (y / 5) * 16];
59		row[(x * 15) + 12] = renderer->palette[x + (y / 5) * 16];
60		row[(x * 15) + 13] = renderer->palette[x + (y / 5) * 16];
61		row[(x * 15) + 14] = renderer->palette[x + (y / 5) * 16];
62	}
63}
64
65static void GBAVideoSoftwareRendererFinishFrame(struct GBAVideoRenderer* renderer) {
66	struct GBAVideoSoftwareRenderer* softwareRenderer = (struct GBAVideoSoftwareRenderer*) renderer;
67
68	pthread_mutex_lock(&softwareRenderer->mutex);
69	pthread_cond_wait(&softwareRenderer->cond, &softwareRenderer->mutex);
70	pthread_mutex_unlock(&softwareRenderer->mutex);
71}