Mercurial > repos > blastem
view render_fbdev.c @ 2329:06d5e9b08bdb
Add NTSC composite shader by Sik
author | Michael Pavone <pavone@retrodev.com> |
---|---|
date | Wed, 23 Aug 2023 21:38:39 -0700 |
parents | 2fd0a8cb1c80 |
children |
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/* Copyright 2013 Michael Pavone This file is part of BlastEm. BlastEm is free software distributed under the terms of the GNU General Public License version 3 or greater. See COPYING for full license text. */ #include <stdlib.h> #include <stdio.h> #include <string.h> #include <math.h> #include <linux/fb.h> #include <linux/input.h> #include <linux/kd.h> #include <alsa/asoundlib.h> #include <sys/types.h> #include <sys/stat.h> #include <sys/ioctl.h> #include <sys/mman.h> #include <fcntl.h> #include <unistd.h> #include <pthread.h> #include <dirent.h> #include "render.h" #include "blastem.h" #include "genesis.h" #include "bindings.h" #include "util.h" #include "paths.h" #include "ppm.h" #include "png.h" #include "config.h" #include "controller_info.h" #ifndef DISABLE_OPENGL #include <EGL/egl.h> #include <GLES2/gl2.h> #ifdef USE_MALI //Mali GLES headers don't seem to define GLchar for some reason typedef char GLchar; #endif #endif #define MAX_EVENT_POLL_PER_FRAME 2 static EGLContext main_context; static int main_width, main_height, windowed_width, windowed_height, is_fullscreen; static uint8_t render_gl = 1; static uint8_t scanlines = 0; static uint32_t last_frame = 0; static snd_pcm_uframes_t buffer_samples; static size_t buffer_bytes; static unsigned int output_channels, sample_rate; static uint8_t quitting = 0; static void render_close_audio() { } static snd_pcm_t *audio_handle; static void *output_buffer; void render_do_audio_ready(audio_source *src) { if (src->front_populated) { fatal_error("Audio source filled up a buffer a second time before other sources finished their first\n"); } int16_t *tmp = src->front; src->front = src->back; src->back = tmp; src->front_populated = 1; src->buffer_pos = 0; if (!all_sources_ready()) { return; } mix_and_convert(output_buffer, buffer_bytes, NULL); int frames = snd_pcm_writei(audio_handle, output_buffer, buffer_samples); if (frames < 0) { frames = snd_pcm_recover(audio_handle, frames, 0); } if (frames < 0) { fprintf(stderr, "Failed to write samples: %s\n", snd_strerror(frames)); } } int render_width() { return main_width; } int render_height() { return main_height; } int render_fullscreen() { return 1; } uint32_t red_shift, blue_shift, green_shift; uint32_t render_map_color(uint8_t r, uint8_t g, uint8_t b) { return r << red_shift | g << green_shift | b << blue_shift; } #ifndef DISABLE_OPENGL static GLuint textures[3], buffers[2], vshader, fshader, program, un_textures[2], un_width, un_height, at_pos; static GLfloat vertex_data_default[] = { -1.0f, -1.0f, 1.0f, -1.0f, -1.0f, 1.0f, 1.0f, 1.0f }; static GLfloat vertex_data[8]; static const GLushort element_data[] = {0, 1, 2, 3}; static const GLchar shader_prefix[] = #ifdef USE_GLES "#version 100\n"; #else "#version 110\n" "#define lowp\n" "#define mediump\n" "#define highp\n"; #endif static GLuint load_shader(char * fname, GLenum shader_type) { char const * parts[] = {get_home_dir(), "/.config/blastem/shaders/", fname}; char * shader_path = alloc_concat_m(3, parts); FILE * f = fopen(shader_path, "rb"); free(shader_path); GLchar * text; long fsize; if (f) { fsize = file_size(f); text = malloc(fsize); if (fread(text, 1, fsize, f) != fsize) { warning("Error reading from shader file %s\n", fname); free(text); return 0; } } else { shader_path = path_append("shaders", fname); uint32_t fsize32; text = read_bundled_file(shader_path, &fsize32); free(shader_path); if (!text) { warning("Failed to open shader file %s for reading\n", fname); return 0; } fsize = fsize32; } if (strncmp(text, "#version", strlen("#version"))) { GLchar *tmp = text; text = alloc_concat(shader_prefix, tmp); free(tmp); fsize += strlen(shader_prefix); } GLuint ret = glCreateShader(shader_type); glShaderSource(ret, 1, (const GLchar **)&text, (const GLint *)&fsize); free(text); glCompileShader(ret); GLint compile_status, loglen; glGetShaderiv(ret, GL_COMPILE_STATUS, &compile_status); if (!compile_status) { glGetShaderiv(ret, GL_INFO_LOG_LENGTH, &loglen); text = malloc(loglen); glGetShaderInfoLog(ret, loglen, NULL, text); warning("Shader %s failed to compile:\n%s\n", fname, text); free(text); glDeleteShader(ret); return 0; } return ret; } #endif #define MAX_FB_LINES 590 static uint32_t texture_buf[MAX_FB_LINES * LINEBUF_SIZE * 2]; #ifdef DISABLE_OPENGL #define RENDER_FORMAT SDL_PIXELFORMAT_ARGB8888 #else #ifdef USE_GLES #define INTERNAL_FORMAT GL_RGBA #define SRC_FORMAT GL_RGBA #define RENDER_FORMAT SDL_PIXELFORMAT_ABGR8888 #else #define INTERNAL_FORMAT GL_RGBA8 #define SRC_FORMAT GL_BGRA #define RENDER_FORMAT SDL_PIXELFORMAT_ARGB8888 #endif static void gl_setup() { tern_val def = {.ptrval = "linear"}; char *scaling = tern_find_path_default(config, "video\0scaling\0", def, TVAL_PTR).ptrval; GLint filter = strcmp(scaling, "linear") ? GL_NEAREST : GL_LINEAR; glGenTextures(3, textures); for (int i = 0; i < 3; i++) { glBindTexture(GL_TEXTURE_2D, textures[i]); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, filter); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, filter); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); if (i < 2) { //TODO: Fixme for PAL + invalid display mode glTexImage2D(GL_TEXTURE_2D, 0, INTERNAL_FORMAT, 512, 512, 0, SRC_FORMAT, GL_UNSIGNED_BYTE, texture_buf); } else { uint32_t blank = 255 << 24; glTexImage2D(GL_TEXTURE_2D, 0, INTERNAL_FORMAT, 1, 1, 0, SRC_FORMAT, GL_UNSIGNED_BYTE, &blank); } } glGenBuffers(2, buffers); glBindBuffer(GL_ARRAY_BUFFER, buffers[0]); glBufferData(GL_ARRAY_BUFFER, sizeof(vertex_data), vertex_data, GL_STATIC_DRAW); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, buffers[1]); glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(element_data), element_data, GL_STATIC_DRAW); def.ptrval = "default.v.glsl"; vshader = load_shader(tern_find_path_default(config, "video\0vertex_shader\0", def, TVAL_PTR).ptrval, GL_VERTEX_SHADER); def.ptrval = "default.f.glsl"; fshader = load_shader(tern_find_path_default(config, "video\0fragment_shader\0", def, TVAL_PTR).ptrval, GL_FRAGMENT_SHADER); program = glCreateProgram(); glAttachShader(program, vshader); glAttachShader(program, fshader); glLinkProgram(program); GLint link_status; glGetProgramiv(program, GL_LINK_STATUS, &link_status); if (!link_status) { fputs("Failed to link shader program\n", stderr); exit(1); } un_textures[0] = glGetUniformLocation(program, "textures[0]"); un_textures[1] = glGetUniformLocation(program, "textures[1]"); un_width = glGetUniformLocation(program, "width"); un_height = glGetUniformLocation(program, "height"); at_pos = glGetAttribLocation(program, "pos"); } static void gl_teardown() { glDeleteProgram(program); glDeleteShader(vshader); glDeleteShader(fshader); glDeleteBuffers(2, buffers); glDeleteTextures(3, textures); } #endif static uint8_t texture_init; static void render_alloc_surfaces() { if (texture_init) { return; } texture_init = 1; #ifndef DISABLE_OPENGL if (render_gl) { gl_setup(); } #endif } static void free_surfaces(void) { texture_init = 0; } static char * caption = NULL; static char * fps_caption = NULL; static void render_quit() { render_close_audio(); free_surfaces(); #ifndef DISABLE_OPENGL if (render_gl) { gl_teardown(); //FIXME: replace with EGL equivalent //SDL_GL_DeleteContext(main_context); } #endif } static float config_aspect() { static float aspect = 0.0f; if (aspect == 0.0f) { char *config_aspect = tern_find_path_default(config, "video\0aspect\0", (tern_val){.ptrval = "4:3"}, TVAL_PTR).ptrval; if (strcmp("stretch", config_aspect)) { aspect = 4.0f/3.0f; char *end; float aspect_numerator = strtof(config_aspect, &end); if (aspect_numerator > 0.0f && *end == ':') { float aspect_denominator = strtof(end+1, &end); if (aspect_denominator > 0.0f && !*end) { aspect = aspect_numerator / aspect_denominator; } } } else { aspect = -1.0f; } } return aspect; } static void update_aspect() { //reset default values #ifndef DISABLE_OPENGL memcpy(vertex_data, vertex_data_default, sizeof(vertex_data)); #endif if (config_aspect() > 0.0f) { float aspect = (float)main_width / main_height; if (fabs(aspect - config_aspect()) < 0.01f) { //close enough for government work return; } #ifndef DISABLE_OPENGL if (render_gl) { for (int i = 0; i < 4; i++) { if (aspect > config_aspect()) { vertex_data[i*2] *= config_aspect()/aspect; } else { vertex_data[i*2+1] *= aspect/config_aspect(); } } } else { #endif //TODO: Maybe do some stuff for non-integer scaling in raw fbdev copy #ifndef DISABLE_OPENGL } #endif } } static uint8_t scancode_map[128] = { [KEY_A] = 0x1C, [KEY_B] = 0x32, [KEY_C] = 0x21, [KEY_D] = 0x23, [KEY_E] = 0x24, [KEY_F] = 0x2B, [KEY_G] = 0x34, [KEY_H] = 0x33, [KEY_I] = 0x43, [KEY_J] = 0x3B, [KEY_K] = 0x42, [KEY_L] = 0x4B, [KEY_M] = 0x3A, [KEY_N] = 0x31, [KEY_O] = 0x44, [KEY_P] = 0x4D, [KEY_Q] = 0x15, [KEY_R] = 0x2D, [KEY_S] = 0x1B, [KEY_T] = 0x2C, [KEY_U] = 0x3C, [KEY_V] = 0x2A, [KEY_W] = 0x1D, [KEY_X] = 0x22, [KEY_Y] = 0x35, [KEY_Z] = 0x1A, [KEY_1] = 0x16, [KEY_2] = 0x1E, [KEY_3] = 0x26, [KEY_4] = 0x25, [KEY_5] = 0x2E, [KEY_6] = 0x36, [KEY_7] = 0x3D, [KEY_8] = 0x3E, [KEY_9] = 0x46, [KEY_0] = 0x45, [KEY_ENTER] = 0x5A, [KEY_ESC] = 0x76, [KEY_SPACE] = 0x29, [KEY_TAB] = 0x0D, [KEY_BACKSPACE] = 0x66, [KEY_MINUS] = 0x4E, [KEY_EQUAL] = 0x55, [KEY_LEFTBRACE] = 0x54, [KEY_RIGHTBRACE] = 0x5B, [KEY_BACKSLASH] = 0x5D, [KEY_SEMICOLON] = 0x4C, [KEY_APOSTROPHE] = 0x52, [KEY_GRAVE] = 0x0E, [KEY_COMMA] = 0x41, [KEY_DOT] = 0x49, [KEY_SLASH] = 0x4A, [KEY_CAPSLOCK] = 0x58, [KEY_F1] = 0x05, [KEY_F2] = 0x06, [KEY_F3] = 0x04, [KEY_F4] = 0x0C, [KEY_F5] = 0x03, [KEY_F6] = 0x0B, [KEY_F7] = 0x83, [KEY_F8] = 0x0A, [KEY_F9] = 0x01, [KEY_F10] = 0x09, [KEY_F11] = 0x78, [KEY_F12] = 0x07, [KEY_LEFTCTRL] = 0x14, [KEY_LEFTSHIFT] = 0x12, [KEY_LEFTALT] = 0x11, [KEY_RIGHTCTRL] = 0x18, [KEY_RIGHTSHIFT] = 0x59, [KEY_RIGHTALT] = 0x17, [KEY_INSERT] = 0x81, [KEY_PAUSE] = 0x82, [KEY_SYSRQ] = 0x84, [KEY_SCROLLLOCK] = 0x7E, [KEY_DELETE] = 0x85, [KEY_LEFT] = 0x86, [KEY_HOME] = 0x87, [KEY_END] = 0x88, [KEY_UP] = 0x89, [KEY_DOWN] = 0x8A, [KEY_PAGEUP] = 0x8B, [KEY_PAGEDOWN] = 0x8C, [KEY_RIGHT] = 0x8D, [KEY_NUMLOCK] = 0x77, [KEY_KPSLASH] = 0x80, [KEY_KPASTERISK] = 0x7C, [KEY_KPMINUS] = 0x7B, [KEY_KPPLUS] = 0x79, [KEY_KPENTER] = 0x19, [KEY_KP1] = 0x69, [KEY_KP2] = 0x72, [KEY_KP3] = 0x7A, [KEY_KP4] = 0x6B, [KEY_KP5] = 0x73, [KEY_KP6] = 0x74, [KEY_KP7] = 0x6C, [KEY_KP8] = 0x75, [KEY_KP9] = 0x7D, [KEY_KP0] = 0x70, [KEY_KPDOT] = 0x71, }; #include "special_keys_evdev.h" static uint8_t sym_map[128] = { [KEY_A] = 'a', [KEY_B] = 'b', [KEY_C] = 'c', [KEY_D] = 'd', [KEY_E] = 'e', [KEY_F] = 'f', [KEY_G] = 'g', [KEY_H] = 'h', [KEY_I] = 'i', [KEY_J] = 'j', [KEY_K] = 'k', [KEY_L] = 'l', [KEY_M] = 'm', [KEY_N] = 'n', [KEY_O] = 'o', [KEY_P] = 'p', [KEY_Q] = 'q', [KEY_R] = 'r', [KEY_S] = 's', [KEY_T] = 't', [KEY_U] = 'u', [KEY_V] = 'v', [KEY_W] = 'w', [KEY_X] = 'x', [KEY_Y] = 'y', [KEY_Z] = 'z', [KEY_1] = '1', [KEY_2] = '2', [KEY_3] = '3', [KEY_4] = '4', [KEY_5] = '5', [KEY_6] = '6', [KEY_7] = '7', [KEY_8] = '8', [KEY_9] = '9', [KEY_0] = '0', [KEY_ENTER] = '\r', [KEY_SPACE] = ' ', [KEY_TAB] = '\t', [KEY_BACKSPACE] = '\b', [KEY_MINUS] = '-', [KEY_EQUAL] = '=', [KEY_LEFTBRACE] = '[', [KEY_RIGHTBRACE] = ']', [KEY_BACKSLASH] = '\\', [KEY_SEMICOLON] = ';', [KEY_APOSTROPHE] = '\'', [KEY_GRAVE] = '`', [KEY_COMMA] = ',', [KEY_DOT] = '.', [KEY_SLASH] = '/', [KEY_ESC] = RENDERKEY_ESC, [KEY_F1] = RENDERKEY_F1, [KEY_F2] = RENDERKEY_F2, [KEY_F3] = RENDERKEY_F3, [KEY_F4] = RENDERKEY_F4, [KEY_F5] = RENDERKEY_F5, [KEY_F6] = RENDERKEY_F6, [KEY_F7] = RENDERKEY_F7, [KEY_F8] = RENDERKEY_F8, [KEY_F9] = RENDERKEY_F9, [KEY_F10] = RENDERKEY_F10, [KEY_F11] = RENDERKEY_F11, [KEY_F12] = RENDERKEY_F12, [KEY_LEFTCTRL] = RENDERKEY_LCTRL, [KEY_LEFTSHIFT] = RENDERKEY_LSHIFT, [KEY_LEFTALT] = RENDERKEY_LALT, [KEY_RIGHTCTRL] = RENDERKEY_RCTRL, [KEY_RIGHTSHIFT] = RENDERKEY_RSHIFT, [KEY_RIGHTALT] = RENDERKEY_RALT, [KEY_DELETE] = RENDERKEY_DEL, [KEY_LEFT] = RENDERKEY_LEFT, [KEY_HOME] = RENDERKEY_HOME, [KEY_END] = RENDERKEY_END, [KEY_UP] = RENDERKEY_UP, [KEY_DOWN] = RENDERKEY_DOWN, [KEY_PAGEUP] = RENDERKEY_PAGEUP, [KEY_PAGEDOWN] = RENDERKEY_PAGEDOWN, [KEY_RIGHT] = RENDERKEY_RIGHT, [KEY_KPSLASH] = 0x80, [KEY_KPASTERISK] = 0x7C, [KEY_KPMINUS] = 0x7B, [KEY_KPPLUS] = 0x79, [KEY_KPENTER] = 0x19, [KEY_KP1] = 0x69, [KEY_KP2] = 0x72, [KEY_KP3] = 0x7A, [KEY_KP4] = 0x6B, [KEY_KP5] = 0x73, [KEY_KP6] = 0x74, [KEY_KP7] = 0x6C, [KEY_KP8] = 0x75, [KEY_KP9] = 0x7D, [KEY_KP0] = 0x70, [KEY_KPDOT] = 0x71, }; static drop_handler drag_drop_handler; void render_set_drag_drop_handler(drop_handler handler) { drag_drop_handler = handler; } char* render_joystick_type_id(int index) { return strdup(""); } static uint32_t overscan_top[NUM_VID_STD] = {2, 21}; static uint32_t overscan_bot[NUM_VID_STD] = {1, 17}; static uint32_t overscan_left[NUM_VID_STD] = {13, 13}; static uint32_t overscan_right[NUM_VID_STD] = {14, 14}; static vid_std video_standard = VID_NTSC; typedef enum { DEV_NONE, DEV_KEYBOARD, DEV_MOUSE, DEV_GAMEPAD } device_type; static int32_t mouse_x, mouse_y, mouse_accum_x, mouse_accum_y; static int32_t handle_event(device_type dtype, int device_index, struct input_event *event) { switch (event->type) { case EV_KEY: //code is key, value is 1 for keydown, 0 for keyup if (dtype == DEV_KEYBOARD && event->code < 128) { //keyboard key that we might have a mapping for if (event->value) { handle_keydown(sym_map[event->code], scancode_map[event->code]); } else { handle_keyup(sym_map[event->code], scancode_map[event->code]); } } else if (dtype == DEV_MOUSE && event->code >= BTN_MOUSE && event->code < BTN_JOYSTICK) { //mosue button if (event->value) { handle_mousedown(device_index, event->code - BTN_LEFT); } else { handle_mouseup(device_index, event->code - BTN_LEFT); } } else if (dtype == DEV_GAMEPAD && event->code >= BTN_GAMEPAD && event->code < BTN_DIGI) { //gamepad button if (event->value) { handle_joydown(device_index, event->code - BTN_SOUTH); } else { handle_joyup(device_index, event->code - BTN_SOUTH); } } break; case EV_REL: if (dtype == DEV_MOUSE) { switch(event->code) { case REL_X: mouse_accum_x += event->value; break; case REL_Y: mouse_accum_y += event->value; break; } } break; case EV_ABS: //TODO: Handle joystick axis/hat motion, absolute mouse movement break; case EV_SYN: if (dtype == DEV_MOUSE && (mouse_accum_x || mouse_accum_y)) { mouse_x += mouse_accum_x; mouse_y += mouse_accum_y; if (mouse_x < 0) { mouse_x = 0; } else if (mouse_x >= main_width) { mouse_x = main_width - 1; } if (mouse_y < 0) { mouse_y = 0; } else if (mouse_y >= main_height) { mouse_y = main_height - 1; } handle_mouse_moved(device_index, mouse_x, mouse_y, mouse_accum_x, mouse_accum_y); mouse_accum_x = mouse_accum_y = 0; } break; /* case SDL_JOYHATMOTION: handle_joy_dpad(find_joystick_index(event->jhat.which), event->jhat.hat, event->jhat.value); break; case SDL_JOYAXISMOTION: handle_joy_axis(find_joystick_index(event->jaxis.which), event->jaxis.axis, event->jaxis.value); break;*/ } return 0; } #define MAX_DEVICES 16 static int device_fds[MAX_DEVICES]; static device_type device_types[MAX_DEVICES]; static int cur_devices; static void drain_events() { struct input_event events[64]; int index_by_type[3] = {0,0,0}; for (int i = 0; i < cur_devices; i++) { int bytes = sizeof(events); int device_index = index_by_type[device_types[i]-1]++; while (bytes == sizeof(events)) { bytes = read(device_fds[i], events, sizeof(events)); if (bytes > 0) { int num_events = bytes / sizeof(events[0]); for (int j = 0; j < num_events; j++) { handle_event(device_types[i], device_index, events + j); } } else if (bytes < 0 && errno != EAGAIN && errno != EWOULDBLOCK) { perror("Failed to read evdev events"); } } } } static char *vid_std_names[NUM_VID_STD] = {"ntsc", "pal"}; static void init_audio() { char *device_name = tern_find_path_default(config, "audio\0alsa_device\0", (tern_val){.ptrval="default"}, TVAL_PTR).ptrval; int res = snd_pcm_open(&audio_handle, device_name, SND_PCM_STREAM_PLAYBACK, 0); if (res < 0) { fatal_error("Failed to open ALSA device: %s\n", snd_strerror(res)); } snd_pcm_hw_params_t *params; snd_pcm_hw_params_alloca(¶ms); res = snd_pcm_hw_params_any(audio_handle, params); if (res < 0) { fatal_error("No playback configurations available: %s\n", snd_strerror(res)); } res = snd_pcm_hw_params_set_access(audio_handle, params, SND_PCM_ACCESS_RW_INTERLEAVED); if (res < 0) { fatal_error("Failed to set access type: %s\n", snd_strerror(res)); } res = snd_pcm_hw_params_set_format(audio_handle, params, SND_PCM_FORMAT_S16_LE); if (res < 0) { //failed to set, signed 16-bit integer, try floating point res = snd_pcm_hw_params_set_format(audio_handle, params, SND_PCM_FORMAT_FLOAT_LE); if (res < 0) { fatal_error("Failed to set an acceptable format: %s\n", snd_strerror(res)); } mix = mix_f32; } else { mix = mix_s16; } char * rate_str = tern_find_path(config, "audio\0rate\0", TVAL_PTR).ptrval; sample_rate = rate_str ? atoi(rate_str) : 0; if (!sample_rate) { sample_rate = 48000; } snd_pcm_hw_params_set_rate_near(audio_handle, params, &sample_rate, NULL); output_channels = 2; snd_pcm_hw_params_set_channels_near(audio_handle, params, &output_channels); char * samples_str = tern_find_path(config, "audio\0buffer\0", TVAL_PTR).ptrval; buffer_samples = samples_str ? atoi(samples_str) : 0; if (!buffer_samples) { buffer_samples = 512; } snd_pcm_hw_params_set_period_size_near(audio_handle, params, &buffer_samples, NULL); int dir = 1; unsigned int periods = 2; snd_pcm_hw_params_set_periods_near(audio_handle, params, &periods, &dir); res = snd_pcm_hw_params(audio_handle, params); if (res < 0) { fatal_error("Failed to set ALSA hardware params: %s\n", snd_strerror(res)); } printf("Initialized audio at frequency %d with a %d sample buffer, ", (int)sample_rate, (int)buffer_samples); if (mix == mix_s16) { puts("signed 16-bit int format"); } else { puts("32-bit float format"); } } int fbfd; uint32_t *framebuffer; uint32_t fb_stride; #ifndef DISABLE_OPENGL EGLDisplay egl_display; EGLSurface main_surface; uint8_t egl_setup(void) { //Mesa wants the fbdev file descriptor as the display egl_display = eglGetDisplay((EGLNativeDisplayType)fbfd); if (egl_display == EGL_NO_DISPLAY) { //Mali (and possibly others) seems to just want EGL_DEFAULT_DISPLAY egl_display = eglGetDisplay(EGL_DEFAULT_DISPLAY); if (egl_display == EGL_NO_DISPLAY) { warning("eglGetDisplay failed with error %X\n", eglGetError()); return 0; } } EGLint major, minor; if (!eglInitialize(egl_display, &major, &minor)) { warning("eglInitialize failed with error %X\n", eglGetError()); return 0; } printf("EGL version %d.%d\n", major, minor); EGLint num_configs; EGLConfig config; EGLint const config_attribs[] = { EGL_RED_SIZE, 5, EGL_GREEN_SIZE, 5, EGL_BLUE_SIZE, 5, EGL_CONFORMANT, EGL_OPENGL_ES2_BIT, EGL_NONE }; if (!eglChooseConfig(egl_display, config_attribs, &config, 1, &num_configs)) { num_configs = 0; warning("eglChooseConfig failed with error %X\n", eglGetError()); } if (!num_configs) { warning("Failed to choose an EGL config\n"); goto error; } EGLint const context_attribs[] = { #ifdef EGL_CONTEXT_MAJOR_VERSION EGL_CONTEXT_MAJOR_VERSION, 2, #endif EGL_NONE }; main_context = eglCreateContext(egl_display, config, EGL_NO_CONTEXT, context_attribs); if (main_context == EGL_NO_CONTEXT) { warning("Failed to create EGL context %X\n", eglGetError()); goto error; } #ifdef USE_MALI struct mali_native_window native_window = { .width = main_width, .height = main_height }; main_surface = eglCreateWindowSurface(egl_display, config, &native_window, NULL); #else main_surface = eglCreateWindowSurface(egl_display, config, (EGLNativeWindowType)NULL, NULL); #endif if (main_surface == EGL_NO_SURFACE) { warning("Failed to create EGL surface %X\n", eglGetError()); goto post_context_error; } if (eglMakeCurrent(egl_display, main_surface, main_surface, main_context)) { return 1; } eglDestroySurface(egl_display, main_surface); post_context_error: eglDestroyContext(egl_display, main_context); error: eglTerminate(egl_display); return 0; } #endif static pthread_mutex_t buffer_lock = PTHREAD_MUTEX_INITIALIZER; static pthread_cond_t buffer_cond = PTHREAD_COND_INITIALIZER; static uint8_t buffer_ready; static uint32_t *copy_buffer; static uint32_t last_width, last_width_scale, last_height, last_height_scale; static uint32_t max_multiple; static uint32_t mix_pixel(uint32_t last, uint32_t cur, float ratio) { float a,b,c,d; a = (last & 255) * ratio; b = (last >> 8 & 255) * ratio; c = (last >> 16 & 255) * ratio; d = (last >> 24 & 255) * ratio; ratio = 1.0f - ratio; a += (cur & 255) * ratio; b += (cur >> 8 & 255) * ratio; c += (cur >> 16 & 255) * ratio; d += (cur >> 24 & 255) * ratio; return ((int)d) << 24 | ((int)c) << 16 | ((int)b) << 8 | ((int)a); } static void do_buffer_copy(void) { uint32_t width_multiple = main_width / last_width_scale; uint32_t height_multiple = main_height / last_height_scale; uint32_t multiple = width_multiple < height_multiple ? width_multiple : height_multiple; if (max_multiple && multiple > max_multiple) { multiple = max_multiple; } height_multiple = last_height_scale * multiple / last_height; uint32_t *cur_line = framebuffer + (main_width - last_width_scale * multiple)/2; cur_line += fb_stride * (main_height - last_height_scale * multiple) / (2 * sizeof(uint32_t)); uint32_t *src_line = copy_buffer; if (height_multiple * last_height == multiple * last_height_scale) { if (last_width == last_width_scale) { for (uint32_t y = 0; y < last_height; y++) { for (uint32_t i = 0; i < height_multiple; i++) { uint32_t *cur = cur_line; uint32_t *src = src_line; for (uint32_t x = 0; x < last_width ; x++) { uint32_t pixel = *(src++); for (uint32_t j = 0; j < multiple; j++) { *(cur++) = pixel; } } cur_line += fb_stride / sizeof(uint32_t); } src_line += LINEBUF_SIZE; } } else { float scale_multiple = ((float)(last_width_scale * multiple)) / (float)last_width; float remaining = 0.0f; uint32_t last_pixel = 0; for (uint32_t y = 0; y < last_height; y++) { for (uint32_t i = 0; i < height_multiple; i++) { uint32_t *cur = cur_line; uint32_t *src = src_line; for (uint32_t x = 0; x < last_width ; x++) { uint32_t pixel = *(src++); float count = scale_multiple; if (remaining > 0.0f) { *(cur++) = mix_pixel(last_pixel, pixel, remaining); count -= 1.0f - remaining; } for (; count >= 1; count -= 1.0f) { *(cur++) = pixel; } remaining = count; last_pixel = pixel; } cur_line += fb_stride / sizeof(uint32_t); } src_line += LINEBUF_SIZE; } } } else { float height_scale = ((float)(last_height_scale * multiple)) / (float)last_height; float height_remaining = 0.0f; uint32_t *last_line; if (last_width == last_width_scale) { for (uint32_t y = 0; y < last_height; y++) { float hcount = height_scale; if (height_remaining > 0.0f) { uint32_t *cur = cur_line; uint32_t *src = src_line; uint32_t *last = last_line; for (uint32_t x = 0; x < last_width ; x++) { uint32_t mixed = mix_pixel(*(last++), *(src++), height_remaining); for (uint32_t j = 0; j < multiple; j++) { *(cur++) = mixed; } } hcount -= 1.0f - height_remaining; cur_line += fb_stride / sizeof(uint32_t); } for(; hcount >= 1; hcount -= 1.0f) { uint32_t *cur = cur_line; uint32_t *src = src_line; for (uint32_t x = 0; x < last_width ; x++) { uint32_t pixel = *(src++); for (uint32_t j = 0; j < multiple; j++) { *(cur++) = pixel; } } cur_line += fb_stride / sizeof(uint32_t); } height_remaining = hcount; last_line = src_line; src_line += LINEBUF_SIZE; } } else { float scale_multiple = ((float)(last_width_scale * multiple)) / (float)last_width; float remaining = 0.0f; uint32_t last_pixel = 0; for (uint32_t y = 0; y < last_height; y++) { float hcount = height_scale; if (height_remaining > 0.0f) { uint32_t *cur = cur_line; uint32_t *src = src_line; uint32_t *last = last_line; for (uint32_t x = 0; x < last_width; x++) { uint32_t pixel = mix_pixel(*(last++), *(src++), height_remaining); float count = scale_multiple; if (remaining > 0.0f) { *(cur++) = mix_pixel(last_pixel, pixel, remaining); count -= 1.0f - remaining; } for (; count >= 1.0f; count -= 1.0f) { *(cur++) = pixel; } remaining = count; last_pixel = pixel; } hcount -= 1.0f - height_remaining; cur_line += fb_stride / sizeof(uint32_t); } for (; hcount >= 1.0f; hcount -= 1.0f) { uint32_t *cur = cur_line; uint32_t *src = src_line; for (uint32_t x = 0; x < last_width ; x++) { uint32_t pixel = *(src++); float count = scale_multiple; if (remaining > 0.0f) { *(cur++) = mix_pixel(last_pixel, pixel, remaining); count -= 1.0f - remaining; } for (; count >= 1; count -= 1.0f) { *(cur++) = pixel; } remaining = count; last_pixel = pixel; } cur_line += fb_stride / sizeof(uint32_t); } height_remaining = hcount; last_line = src_line; src_line += LINEBUF_SIZE; } } } } static void *buffer_copy(void *data) { pthread_mutex_lock(&buffer_lock); for(;;) { while (!buffer_ready) { pthread_cond_wait(&buffer_cond, &buffer_lock); } buffer_ready = 0; do_buffer_copy(); } return 0; } static pthread_t buffer_copy_handle; static uint8_t copy_use_thread; void window_setup(void) { fbfd = open("/dev/fb0", O_RDWR); struct fb_fix_screeninfo fixInfo; struct fb_var_screeninfo varInfo; ioctl(fbfd, FBIOGET_FSCREENINFO, &fixInfo); ioctl(fbfd, FBIOGET_VSCREENINFO, &varInfo); printf("Resolution: %d x %d\n", varInfo.xres, varInfo.yres); printf("Framebuffer size: %d, line stride: %d\n", fixInfo.smem_len, fixInfo.line_length); main_width = varInfo.xres; main_height = varInfo.yres; fb_stride = fixInfo.line_length; tern_val def = {.ptrval = "audio"}; char *sync_src = tern_find_path_default(config, "system\0sync_source\0", def, TVAL_PTR).ptrval; const char *vsync; def.ptrval = "off"; vsync = tern_find_path_default(config, "video\0vsync\0", def, TVAL_PTR).ptrval; tern_node *video = tern_find_node(config, "video"); if (video) { for (int i = 0; i < NUM_VID_STD; i++) { tern_node *std_settings = tern_find_node(video, vid_std_names[i]); if (std_settings) { char *val = tern_find_path_default(std_settings, "overscan\0top\0", (tern_val){.ptrval = NULL}, TVAL_PTR).ptrval; if (val) { overscan_top[i] = atoi(val); } val = tern_find_path_default(std_settings, "overscan\0bottom\0", (tern_val){.ptrval = NULL}, TVAL_PTR).ptrval; if (val) { overscan_bot[i] = atoi(val); } val = tern_find_path_default(std_settings, "overscan\0left\0", (tern_val){.ptrval = NULL}, TVAL_PTR).ptrval; if (val) { overscan_left[i] = atoi(val); } val = tern_find_path_default(std_settings, "overscan\0right\0", (tern_val){.ptrval = NULL}, TVAL_PTR).ptrval; if (val) { overscan_right[i] = atoi(val); } } } } render_gl = 0; #ifndef DISABLE_OPENGL char *gl_enabled_str = tern_find_path_default(config, "video\0gl\0", def, TVAL_PTR).ptrval; uint8_t gl_enabled = strcmp(gl_enabled_str, "off") != 0; if (gl_enabled) { render_gl = egl_setup(); blue_shift = 16; green_shift = 8; red_shift = 0; } if (!render_gl) { #endif framebuffer = mmap(NULL, fixInfo.smem_len, PROT_READ|PROT_WRITE, MAP_SHARED, fbfd, 0); red_shift = varInfo.red.offset; green_shift = varInfo.green.offset; blue_shift = varInfo.blue.offset; def.ptrval = "0"; max_multiple = atoi(tern_find_path_default(config, "video\0fbdev\0max_multiple\0", def, TVAL_PTR).ptrval); def.ptrval = "true"; copy_use_thread = strcmp(tern_find_path_default(config, "video\0fbdev\0use_thread\0", def, TVAL_PTR).ptrval, "false"); if (copy_use_thread) { pthread_create(&buffer_copy_handle, NULL, buffer_copy, NULL); } #ifndef DISABLE_OPENGL } #endif update_aspect(); render_alloc_surfaces(); def.ptrval = "off"; scanlines = !strcmp(tern_find_path_default(config, "video\0scanlines\0", def, TVAL_PTR).ptrval, "on"); } void restore_tty(void) { ioctl(STDIN_FILENO, KDSETMODE, KD_TEXT); for (int i = 0; i < cur_devices; i++) { if (device_types[i] == DEV_KEYBOARD) { ioctl(device_fds[i], EVIOCGRAB, 0); } } } void render_init(int width, int height, char * title, uint8_t fullscreen) { if (height <= 0) { float aspect = config_aspect() > 0.0f ? config_aspect() : 4.0f/3.0f; height = ((float)width / aspect) + 0.5f; } printf("width: %d, height: %d\n", width, height); windowed_width = width; windowed_height = height; main_width = width; main_height = height; caption = title; if (isatty(STDIN_FILENO)) { ioctl(STDIN_FILENO, KDSETMODE, KD_GRAPHICS); atexit(restore_tty); } window_setup(); init_audio(); render_set_video_standard(VID_NTSC); DIR *d = opendir("/dev/input"); struct dirent* entry; int joystick_counter = 0; while ((entry = readdir(d)) && cur_devices < MAX_DEVICES) { if (!strncmp("event", entry->d_name, strlen("event"))) { char *filename = alloc_concat("/dev/input/", entry->d_name); int fd = open(filename, O_RDONLY); if (fd == -1) { int errnum = errno; warning("Failed to open evdev device %s for reading: %s\n", filename, strerror(errnum)); free(filename); continue; } unsigned long bits; if (-1 == ioctl(fd, EVIOCGBIT(0, sizeof(bits)), &bits)) { int errnum = errno; warning("Failed get capability bits from evdev device %s: %s\n", filename, strerror(errnum)); free(filename); close(fd); continue; } if (!(1 & bits >> EV_KEY)) { //if it doesn't support key events we don't care about it free(filename); close(fd); continue; } unsigned long button_bits[(BTN_THUMBR+8*sizeof(long))/(8*sizeof(long))]; int res = ioctl(fd, EVIOCGBIT(EV_KEY, sizeof(button_bits)), button_bits); if (-1 == res) { int errnum = errno; warning("Failed get capability bits from evdev device %s: %s\n", filename, strerror(errnum)); free(filename); close(fd); continue; } int to_check[] = {KEY_ENTER, BTN_MOUSE, BTN_GAMEPAD}; device_type dtype = DEV_NONE; for (int i = 0; i < 3; i++) { if (1 & button_bits[to_check[i]/(8*sizeof(button_bits[0]))] >> to_check[i]%(8*sizeof(button_bits[0]))) { dtype = i + 1; } } if (dtype == DEV_NONE) { close(fd); } else { device_fds[cur_devices] = fd; device_types[cur_devices] = dtype; char name[1024]; char *names[] = {"Keyboard", "Mouse", "Gamepad"}; ioctl(fd, EVIOCGNAME(sizeof(name)), name); printf("%s is a %s\n%s\n", filename, names[dtype - 1], name); if (dtype == DEV_GAMEPAD) { handle_joy_added(joystick_counter++); } else if (dtype == DEV_KEYBOARD && isatty(STDIN_FILENO)) { ioctl(fd, EVIOCGRAB, 1); } //set FD to non-blocking mode for event polling fcntl(fd, F_SETFL, O_NONBLOCK); cur_devices++; } free(filename); } } atexit(render_quit); } #include<unistd.h> static int in_toggle; static void update_source(audio_source *src, double rc, uint8_t sync_changed) { double alpha = src->dt / (src->dt + rc); int32_t lowpass_alpha = (int32_t)(((double)0x10000) * alpha); src->lowpass_alpha = lowpass_alpha; } void render_config_updated(void) { free_surfaces(); #ifndef DISABLE_OPENGL if (render_gl) { /*if (on_context_destroyed) { on_context_destroyed(); }*/ gl_teardown(); //FIXME: EGL equivalent //SDL_GL_DeleteContext(main_context); } else { #endif #ifndef DISABLE_OPENGL } #endif //FIXME: EGL equivalent //SDL_DestroyWindow(main_window); drain_events(); char *config_width = tern_find_path(config, "video\0width\0", TVAL_PTR).ptrval; if (config_width) { windowed_width = atoi(config_width); } char *config_height = tern_find_path(config, "video\0height\0", TVAL_PTR).ptrval; if (config_height) { windowed_height = atoi(config_height); } else { float aspect = config_aspect() > 0.0f ? config_aspect() : 4.0f/3.0f; windowed_height = ((float)windowed_width / aspect) + 0.5f; } window_setup(); update_aspect(); #ifndef DISABLE_OPENGL //need to check render_gl again after window_setup as render option could have changed /*if (render_gl && on_context_created) { on_context_created(); }*/ #endif render_close_audio(); quitting = 0; init_audio(); render_set_video_standard(video_standard); double lowpass_cutoff = get_lowpass_cutoff(config); double rc = (1.0 / lowpass_cutoff) / (2.0 * M_PI); for (uint8_t i = 0; i < num_audio_sources; i++) { update_source(audio_sources[i], rc, 0); } for (uint8_t i = 0; i < num_inactive_audio_sources; i++) { update_source(inactive_audio_sources[i], rc, 0); } drain_events(); } void render_set_video_standard(vid_std std) { video_standard = std; } void render_update_caption(char *title) { caption = title; free(fps_caption); fps_caption = NULL; } static char *screenshot_path; void render_save_screenshot(char *path) { if (screenshot_path) { free(screenshot_path); } screenshot_path = path; } uint8_t render_create_window(char *caption, uint32_t width, uint32_t height, window_close_handler close_handler) { //not supported under fbdev return 0; } void render_destroy_window(uint8_t which) { //not supported under fbdev } static uint8_t last_fb; static uint32_t texture_off; uint32_t *render_get_framebuffer(uint8_t which, int *pitch) { if (max_multiple == 1 && !render_gl) { if (last_fb != which) { *pitch = fb_stride * 2; return framebuffer + (which == FRAMEBUFFER_EVEN ? fb_stride / sizeof(uint32_t) : 0); } *pitch = fb_stride; return framebuffer; } if (!render_gl && last_fb != which) { *pitch = LINEBUF_SIZE * sizeof(uint32_t) * 2; return texture_buf + texture_off + (which == FRAMEBUFFER_EVEN ? LINEBUF_SIZE : 0); } *pitch = LINEBUF_SIZE * sizeof(uint32_t); return texture_buf + texture_off; } uint8_t events_processed; #ifdef __ANDROID__ #define FPS_INTERVAL 10000 #else #define FPS_INTERVAL 1000 #endif static uint8_t interlaced; void render_update_display(); void render_framebuffer_updated(uint8_t which, int width) { uint32_t height = which <= FRAMEBUFFER_EVEN ? (video_standard == VID_NTSC ? 243 : 294) - (overscan_top[video_standard] + overscan_bot[video_standard]) : 240; width -= overscan_left[video_standard] + overscan_right[video_standard]; #ifndef DISABLE_OPENGL if (render_gl && which <= FRAMEBUFFER_EVEN) { last_width = width; glBindTexture(GL_TEXTURE_2D, textures[which]); glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, LINEBUF_SIZE, height, SRC_FORMAT, GL_UNSIGNED_BYTE, texture_buf + overscan_left[video_standard] + LINEBUF_SIZE * overscan_top[video_standard]); render_update_display(); last_height = height; } else { #endif if (max_multiple != 1) { if (copy_use_thread) { pthread_mutex_lock(&buffer_lock); buffer_ready = 1; last_width = width; last_width_scale = LINEBUF_SIZE - (overscan_left[video_standard] + overscan_right[video_standard]); last_height = last_height_scale = height; copy_buffer = texture_buf + texture_off + overscan_left[video_standard] + LINEBUF_SIZE * overscan_top[video_standard]; if (which != last_fb) { last_height *= 2; copy_buffer += LINEBUF_SIZE * overscan_top[video_standard]; uint32_t *src = texture_buf + (texture_off ? 0 : LINEBUF_SIZE * MAX_FB_LINES) + overscan_left[video_standard] + LINEBUF_SIZE * overscan_top[video_standard] + LINEBUF_SIZE * overscan_top[video_standard]; uint32_t *dst = copy_buffer; if (which == FRAMEBUFFER_ODD) { src += LINEBUF_SIZE; dst += LINEBUF_SIZE; } for (int i = 0; i < height; i++) { memcpy(dst, src, width * sizeof(uint32_t)); src += LINEBUF_SIZE * 2; dst += LINEBUF_SIZE * 2; } } texture_off = texture_off ? 0 : LINEBUF_SIZE * MAX_FB_LINES; pthread_cond_signal(&buffer_cond); pthread_mutex_unlock(&buffer_lock); } else { last_width = width; last_width_scale = LINEBUF_SIZE - (overscan_left[video_standard] + overscan_right[video_standard]); last_height = last_height_scale = height; copy_buffer = texture_buf + texture_off + overscan_left[video_standard] + LINEBUF_SIZE * overscan_top[video_standard]; if (which != last_fb) { last_height *= 2; copy_buffer += LINEBUF_SIZE * overscan_top[video_standard]; } do_buffer_copy(); } } last_fb = which; if (!events_processed) { process_events(); } events_processed = 0; #ifndef DISABLE_OPENGL } #endif } void render_update_display() { #ifndef DISABLE_OPENGL if (render_gl) { glClearColor(0.0f, 0.0f, 0.0f, 1.0f); glClear(GL_COLOR_BUFFER_BIT); glUseProgram(program); glActiveTexture(GL_TEXTURE0); glBindTexture(GL_TEXTURE_2D, textures[0]); glUniform1i(un_textures[0], 0); glActiveTexture(GL_TEXTURE1); glBindTexture(GL_TEXTURE_2D, textures[interlaced ? 1 : scanlines ? 2 : 0]); glUniform1i(un_textures[1], 1); glUniform1f(un_width, render_emulated_width()); glUniform1f(un_height, last_height); glBindBuffer(GL_ARRAY_BUFFER, buffers[0]); glVertexAttribPointer(at_pos, 2, GL_FLOAT, GL_FALSE, sizeof(GLfloat[2]), (void *)0); glEnableVertexAttribArray(at_pos); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, buffers[1]); glDrawElements(GL_TRIANGLE_STRIP, 4, GL_UNSIGNED_SHORT, (void *)0); glDisableVertexAttribArray(at_pos); /*if (render_ui) { render_ui(); }*/ eglSwapBuffers(egl_display, main_surface); } #endif if (!events_processed) { process_events(); } events_processed = 0; } uint32_t render_emulated_width() { return last_width - overscan_left[video_standard] - overscan_right[video_standard]; } uint32_t render_emulated_height() { return (video_standard == VID_NTSC ? 243 : 294) - overscan_top[video_standard] - overscan_bot[video_standard]; } uint32_t render_overscan_left() { return overscan_left[video_standard]; } uint32_t render_overscan_top() { return overscan_top[video_standard]; } void render_wait_quit(vdp_context * context) { for(;;) { drain_events(); sleep(1); } } int render_lookup_button(char *name) { static tern_node *button_lookup; if (!button_lookup) { //xbox/sdl style names button_lookup = tern_insert_int(button_lookup, "a", BTN_SOUTH); button_lookup = tern_insert_int(button_lookup, "b", BTN_EAST); button_lookup = tern_insert_int(button_lookup, "x", BTN_WEST); button_lookup = tern_insert_int(button_lookup, "y", BTN_NORTH); button_lookup = tern_insert_int(button_lookup, "back", BTN_SELECT); button_lookup = tern_insert_int(button_lookup, "start", BTN_START); button_lookup = tern_insert_int(button_lookup, "guid", BTN_MODE); button_lookup = tern_insert_int(button_lookup, "leftshoulder", BTN_TL); button_lookup = tern_insert_int(button_lookup, "rightshoulder", BTN_TR); button_lookup = tern_insert_int(button_lookup, "leftstick", BTN_THUMBL); button_lookup = tern_insert_int(button_lookup, "rightstick", BTN_THUMBR); //alternative Playstation-style names button_lookup = tern_insert_int(button_lookup, "cross", BTN_SOUTH); button_lookup = tern_insert_int(button_lookup, "circle", BTN_EAST); button_lookup = tern_insert_int(button_lookup, "square", BTN_WEST); button_lookup = tern_insert_int(button_lookup, "triangle", BTN_NORTH); button_lookup = tern_insert_int(button_lookup, "share", BTN_SELECT); button_lookup = tern_insert_int(button_lookup, "select", BTN_SELECT); button_lookup = tern_insert_int(button_lookup, "options", BTN_START); button_lookup = tern_insert_int(button_lookup, "l1", BTN_TL); button_lookup = tern_insert_int(button_lookup, "r1", BTN_TR); button_lookup = tern_insert_int(button_lookup, "l3", BTN_THUMBL); button_lookup = tern_insert_int(button_lookup, "r3", BTN_THUMBR); } return (int)tern_find_int(button_lookup, name, KEY_CNT); } int render_lookup_axis(char *name) { static tern_node *axis_lookup; if (!axis_lookup) { //xbox/sdl style names axis_lookup = tern_insert_int(axis_lookup, "leftx", ABS_X); axis_lookup = tern_insert_int(axis_lookup, "lefty", ABS_Y); axis_lookup = tern_insert_int(axis_lookup, "lefttrigger", ABS_Z); axis_lookup = tern_insert_int(axis_lookup, "rightx", ABS_RX); axis_lookup = tern_insert_int(axis_lookup, "righty", ABS_RY); axis_lookup = tern_insert_int(axis_lookup, "righttrigger", ABS_RZ); //alternative Playstation-style names axis_lookup = tern_insert_int(axis_lookup, "l2", ABS_Z); axis_lookup = tern_insert_int(axis_lookup, "r2", ABS_RZ); } return (int)tern_find_int(axis_lookup, name, ABS_CNT); } int32_t render_translate_input_name(int32_t controller, char *name, uint8_t is_axis) { tern_node *button_lookup, *axis_lookup; if (is_axis) { int axis = render_lookup_axis(name); if (axis == ABS_CNT) { return RENDER_INVALID_NAME; } return RENDER_AXIS_BIT | axis; } else { int button = render_lookup_button(name); if (button != KEY_CNT) { return button; } if (!strcmp("dpup", name)) { return RENDER_DPAD_BIT | 1; } if (!strcmp("dpdown", name)) { return RENDER_DPAD_BIT | 4; } if (!strcmp("dpdleft", name)) { return RENDER_DPAD_BIT | 8; } if (!strcmp("dpright", name)) { return RENDER_DPAD_BIT | 2; } return RENDER_INVALID_NAME; } } int32_t render_dpad_part(int32_t input) { return input >> 4 & 0xFFFFFF; } uint8_t render_direction_part(int32_t input) { return input & 0xF; } int32_t render_axis_part(int32_t input) { return input & 0xFFFFFFF; } void process_events() { if (events_processed > MAX_EVENT_POLL_PER_FRAME) { return; } drain_events(); events_processed++; } #define TOGGLE_MIN_DELAY 250 void render_toggle_fullscreen() { //always fullscreen in fbdev } uint32_t render_audio_buffer() { return buffer_samples; } uint32_t render_sample_rate() { return sample_rate; } void render_errorbox(char *title, char *message) { } void render_warnbox(char *title, char *message) { } void render_infobox(char *title, char *message) { } uint8_t render_has_gl(void) { return render_gl; } uint8_t render_get_active_framebuffer(void) { return FRAMEBUFFER_ODD; }