1/* Copyright (c) 2013-2015 Jeffrey Pfau
  2 *
  3 * This Source Code Form is subject to the terms of the Mozilla Public
  4 * License, v. 2.0. If a copy of the MPL was not distributed with this
  5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
  6#include "main.h"
  7
  8#include "gba/supervisor/thread.h"
  9#include "util/arm-algo.h"
 10
 11bool GBASDLInit(struct SDLSoftwareRenderer* renderer) {
 12#if !SDL_VERSION_ATLEAST(2, 0, 0)
 13#ifdef COLOR_16_BIT
 14	SDL_SetVideoMode(renderer->viewportWidth, renderer->viewportHeight, 16, SDL_DOUBLEBUF | SDL_HWSURFACE);
 15#else
 16	SDL_SetVideoMode(renderer->viewportWidth, renderer->viewportHeight, 32, SDL_DOUBLEBUF | SDL_HWSURFACE);
 17#endif
 18#endif
 19
 20#if SDL_VERSION_ATLEAST(2, 0, 0)
 21	renderer->window = SDL_CreateWindow(PROJECT_NAME, SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, renderer->viewportWidth, renderer->viewportHeight, SDL_WINDOW_OPENGL | (SDL_WINDOW_FULLSCREEN_DESKTOP * renderer->player.fullscreen));
 22	SDL_GetWindowSize(renderer->window, &renderer->viewportWidth, &renderer->viewportHeight);
 23	renderer->player.window = renderer->window;
 24	renderer->sdlRenderer = SDL_CreateRenderer(renderer->window, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
 25#ifdef COLOR_16_BIT
 26#ifdef COLOR_5_6_5
 27	renderer->tex = SDL_CreateTexture(renderer->sdlRenderer, SDL_PIXELFORMAT_RGB565, SDL_TEXTUREACCESS_STREAMING, VIDEO_HORIZONTAL_PIXELS, VIDEO_VERTICAL_PIXELS);
 28#else
 29	renderer->tex = SDL_CreateTexture(renderer->sdlRenderer, SDL_PIXELFORMAT_ABGR1555, SDL_TEXTUREACCESS_STREAMING, VIDEO_HORIZONTAL_PIXELS, VIDEO_VERTICAL_PIXELS);
 30#endif
 31#else
 32	renderer->tex = SDL_CreateTexture(renderer->sdlRenderer, SDL_PIXELFORMAT_ABGR8888, SDL_TEXTUREACCESS_STREAMING, VIDEO_HORIZONTAL_PIXELS, VIDEO_VERTICAL_PIXELS);
 33#endif
 34
 35	SDL_LockTexture(renderer->tex, 0, (void**) &renderer->d.outputBuffer, &renderer->d.outputBufferStride);
 36	renderer->d.outputBufferStride /= BYTES_PER_PIXEL;
 37#else
 38	SDL_Surface* surface = SDL_GetVideoSurface();
 39	SDL_LockSurface(surface);
 40
 41	if (renderer->ratio == 1) {
 42		renderer->d.outputBuffer = surface->pixels;
 43		renderer->d.outputBufferStride = surface->pitch / BYTES_PER_PIXEL;
 44	} else {
 45#ifdef USE_PIXMAN
 46		renderer->d.outputBuffer = malloc(VIDEO_HORIZONTAL_PIXELS * VIDEO_VERTICAL_PIXELS * BYTES_PER_PIXEL);
 47		renderer->d.outputBufferStride = VIDEO_HORIZONTAL_PIXELS;
 48#ifdef COLOR_16_BIT
 49#ifdef COLOR_5_6_5
 50		pixman_format_code_t format = PIXMAN_r5g6b5;
 51#else
 52		pixman_format_code_t format = PIXMAN_x1b5g5r5;
 53#endif
 54#else
 55		pixman_format_code_t format = PIXMAN_x8b8g8r8;
 56#endif
 57		renderer->pix = pixman_image_create_bits(format, VIDEO_HORIZONTAL_PIXELS, VIDEO_VERTICAL_PIXELS,
 58			renderer->d.outputBuffer, renderer->d.outputBufferStride * BYTES_PER_PIXEL);
 59		renderer->screenpix = pixman_image_create_bits(format, renderer->viewportWidth, renderer->viewportHeight, surface->pixels, surface->pitch);
 60
 61		pixman_transform_t transform;
 62		pixman_transform_init_identity(&transform);
 63		pixman_transform_scale(0, &transform, pixman_int_to_fixed(renderer->ratio), pixman_int_to_fixed(renderer->ratio));
 64		pixman_image_set_transform(renderer->pix, &transform);
 65		pixman_image_set_filter(renderer->pix, PIXMAN_FILTER_NEAREST, 0, 0);
 66#else
 67		return false;
 68#endif
 69	}
 70#endif
 71
 72	return true;
 73}
 74
 75void GBASDLRunloop(struct GBAThread* context, struct SDLSoftwareRenderer* renderer) {
 76	SDL_Event event;
 77#if !SDL_VERSION_ATLEAST(2, 0, 0)
 78	SDL_Surface* surface = SDL_GetVideoSurface();
 79#endif
 80
 81	while (context->state < THREAD_EXITING) {
 82		while (SDL_PollEvent(&event)) {
 83			GBASDLHandleEvent(context, &renderer->player, &event);
 84		}
 85
 86		if (GBASyncWaitFrameStart(&context->sync, context->frameskip)) {
 87#if SDL_VERSION_ATLEAST(2, 0, 0)
 88			SDL_UnlockTexture(renderer->tex);
 89			SDL_RenderCopy(renderer->sdlRenderer, renderer->tex, 0, 0);
 90			SDL_RenderPresent(renderer->sdlRenderer);
 91			SDL_LockTexture(renderer->tex, 0, (void**) &renderer->d.outputBuffer, &renderer->d.outputBufferStride);
 92			renderer->d.outputBufferStride /= BYTES_PER_PIXEL;
 93#else
 94#ifdef USE_PIXMAN
 95			if (renderer->ratio > 1) {
 96				pixman_image_composite32(PIXMAN_OP_SRC, renderer->pix, 0, renderer->screenpix,
 97					0, 0, 0, 0, 0, 0,
 98					renderer->viewportWidth, renderer->viewportHeight);
 99			}
100#else
101			switch (renderer->ratio) {
102#if defined(__ARM_NEON) && COLOR_16_BIT
103			case 2:
104				_neon2x(surface->pixels, renderer->d.outputBuffer, 240, 160);
105				break;
106			case 4:
107				_neon4x(surface->pixels, renderer->d.outputBuffer, 240, 160);
108				break;
109#endif
110			case 1:
111				break;
112			default:
113				abort();
114			}
115#endif
116			SDL_UnlockSurface(surface);
117			SDL_Flip(surface);
118			SDL_LockSurface(surface);
119#endif
120		}
121		GBASyncWaitFrameEnd(&context->sync);
122	}
123}
124
125void GBASDLDeinit(struct SDLSoftwareRenderer* renderer) {
126	if (renderer->ratio > 1) {
127		free(renderer->d.outputBuffer);
128	}
129#if !SDL_VERSION_ATLEAST(2, 0, 0)
130	SDL_Surface* surface = SDL_GetVideoSurface();
131	SDL_UnlockSurface(surface);
132#ifdef USE_PIXMAN
133	pixman_image_unref(renderer->pix);
134	pixman_image_unref(renderer->screenpix);
135#endif
136#endif
137}