/*************************************************************************** * __________ __ ___. * Open \______ \ ____ ____ | | _\_ |__ _______ ___ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ * \/ \/ \/ \/ \/ * $Id$ * * Copyright (c) 2010 Thomas Martitz * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY * KIND, either express or implied. * ****************************************************************************/ #include #include #include "config.h" #include "system.h" #include "kernel.h" #include "lcd.h" #include "button.h" extern JNIEnv *env_ptr; extern jobject RockboxService_instance; static jobject RockboxFramebuffer_instance; static jmethodID java_lcd_update; static jmethodID java_lcd_update_rect; static jmethodID java_lcd_init; static int dpi; static int scroll_threshold; static bool display_on; /* this might actually be called before lcd_init_device() or even main(), so * be sure to only access static storage initalized at library loading, * and not more */ void connect_with_java(JNIEnv* env, jobject fb_instance) { JNIEnv e = *env; static bool have_class; if (!have_class) { jclass fb_class = e->GetObjectClass(env, fb_instance); /* cache update functions */ java_lcd_update = e->GetMethodID(env, fb_class, "java_lcd_update", "()V"); java_lcd_update_rect = e->GetMethodID(env, fb_class, "java_lcd_update_rect", "(IIII)V"); jmethodID get_dpi = e->GetMethodID(env, fb_class, "getDpi", "()I"); jmethodID thresh = e->GetMethodID(env, fb_class, "getScrollThreshold", "()I"); /* these don't change with new instances so call them now */ dpi = e->CallIntMethod(env, fb_instance, get_dpi); scroll_threshold = e->CallIntMethod(env, fb_instance, thresh); java_lcd_init = e->GetMethodID(env, fb_class, "java_lcd_init", "(IILjava/nio/ByteBuffer;)V"); have_class = true; } /* Create native_buffer */ jobject buffer = (*env)->NewDirectByteBuffer(env, lcd_framebuffer, (jlong) sizeof(lcd_framebuffer)); /* we need to setup parts for the java object every time */ (*env)->CallVoidMethod(env, fb_instance, java_lcd_init, (jint)LCD_WIDTH, (jint)LCD_HEIGHT, buffer); } /* * Do nothing here and connect with the java object later (if it isn't already) */ void lcd_init_device(void) { } void lcd_update(void) { if (display_on) (*env_ptr)->CallVoidMethod(env_ptr, RockboxFramebuffer_instance, java_lcd_update); } void lcd_update_rect(int x, int y, int width, int height) { if (display_on) (*env_ptr)->CallVoidMethod(env_ptr, RockboxFramebuffer_instance, java_lcd_update_rect, x, y, width, height); } /* * this is called when the surface is created, which called is everytime * the activity is brought in front and the RockboxFramebuffer gains focus * * Note this is considered interrupt context */ JNIEXPORT void JNICALL Java_org_rockbox_RockboxFramebuffer_surfaceCreated(JNIEnv *env, jobject this, jobject surfaceholder) { (void)surfaceholder; /* Update RockboxFramebuffer_instance */ RockboxFramebuffer_instance = (*env)->NewGlobalRef(env, this); /* possibly a new instance - reconnect */ connect_with_java(env, this); display_on = true; send_event(LCD_EVENT_ACTIVATION, NULL); /* Force an update, since the newly created surface is initially black * waiting for the next normal update results in a longish black screen */ queue_post(&button_queue, BUTTON_FORCE_REDRAW, 0); } /* * the surface is destroyed everytime the RockboxFramebuffer loses focus and * goes invisible */ JNIEXPORT void JNICALL Java_org_rockbox_RockboxFramebuffer_surfaceDestroyed(JNIEnv *e, jobject this, jobject surfaceholder) { (void)this; (void)surfaceholder; display_on = false; (*e)->DeleteGlobalRef(e, RockboxFramebuffer_instance); RockboxFramebuffer_instance = NULL; } bool lcd_active(void) { return display_on; } int lcd_get_dpi(void) { return dpi; } int touchscreen_get_scroll_threshold(void) { return scroll_threshold; } /* below is a plain copy from lcd-sdl.c */ /** * |R| |1.000000 -0.000001 1.402000| |Y'| * |G| = |1.000000 -0.334136 -0.714136| |Pb| * |B| |1.000000 1.772000 0.000000| |Pr| * Scaled, normalized, rounded and tweaked to yield RGB 565: * |R| |74 0 101| |Y' - 16| >> 9 * |G| = |74 -24 -51| |Cb - 128| >> 8 * |B| |74 128 0| |Cr - 128| >> 9 */ #define YFAC (74) #define RVFAC (101) #define GUFAC (-24) #define GVFAC (-51) #define BUFAC (128) static inline int clamp(int val, int min, int max) { if (val < min) val = min; else if (val > max) val = max; return val; } void lcd_yuv_set_options(unsigned options) { (void)options; } /* Draw a partial YUV colour bitmap - similiar behavior to lcd_blit_yuv in the core */ void lcd_blit_yuv(unsigned char * const src[3], int src_x, int src_y, int stride, int x, int y, int width, int height) { const unsigned char *ysrc, *usrc, *vsrc; int linecounter; fb_data *dst, *row_end; long z; /* width and height must be >= 2 and an even number */ width &= ~1; linecounter = height >> 1; #if LCD_WIDTH >= LCD_HEIGHT dst = &lcd_framebuffer[y][x]; row_end = dst + width; #else dst = &lcd_framebuffer[x][LCD_WIDTH - y - 1]; row_end = dst + LCD_WIDTH * width; #endif z = stride * src_y; ysrc = src[0] + z + src_x; usrc = src[1] + (z >> 2) + (src_x >> 1); vsrc = src[2] + (usrc - src[1]); /* stride => amount to jump from end of last row to start of next */ stride -= width; /* upsampling, YUV->RGB conversion and reduction to RGB565 in one go */ do { do { int y, cb, cr, rv, guv, bu, r, g, b; y = YFAC*(*ysrc++ - 16); cb = *usrc++ - 128; cr = *vsrc++ - 128; rv = RVFAC*cr; guv = GUFAC*cb + GVFAC*cr; bu = BUFAC*cb; r = y + rv; g = y + guv; b = y + bu; if ((unsigned)(r | g | b) > 64*256-1) { r = clamp(r, 0, 64*256-1); g = clamp(g, 0, 64*256-1); b = clamp(b, 0, 64*256-1); } *dst = LCD_RGBPACK_LCD(r >> 9, g >> 8, b >> 9); #if LCD_WIDTH >= LCD_HEIGHT dst++; #else dst += LCD_WIDTH; #endif y = YFAC*(*ysrc++ - 16); r = y + rv; g = y + guv; b = y + bu; if ((unsigned)(r | g | b) > 64*256-1) { r = clamp(r, 0, 64*256-1); g = clamp(g, 0, 64*256-1); b = clamp(b, 0, 64*256-1); } *dst = LCD_RGBPACK_LCD(r >> 9, g >> 8, b >> 9); #if LCD_WIDTH >= LCD_HEIGHT dst++; #else dst += LCD_WIDTH; #endif } while (dst < row_end); ysrc += stride; usrc -= width >> 1; vsrc -= width >> 1; #if LCD_WIDTH >= LCD_HEIGHT row_end += LCD_WIDTH; dst += LCD_WIDTH - width; #else row_end -= 1; dst -= LCD_WIDTH*width + 1; #endif do { int y, cb, cr, rv, guv, bu, r, g, b; y = YFAC*(*ysrc++ - 16); cb = *usrc++ - 128; cr = *vsrc++ - 128; rv = RVFAC*cr; guv = GUFAC*cb + GVFAC*cr; bu = BUFAC*cb; r = y + rv; g = y + guv; b = y + bu; if ((unsigned)(r | g | b) > 64*256-1) { r = clamp(r, 0, 64*256-1); g = clamp(g, 0, 64*256-1); b = clamp(b, 0, 64*256-1); } *dst = LCD_RGBPACK_LCD(r >> 9, g >> 8, b >> 9); #if LCD_WIDTH >= LCD_HEIGHT dst++; #else dst += LCD_WIDTH; #endif y = YFAC*(*ysrc++ - 16); r = y + rv; g = y + guv; b = y + bu; if ((unsigned)(r | g | b) > 64*256-1) { r = clamp(r, 0, 64*256-1); g = clamp(g, 0, 64*256-1); b = clamp(b, 0, 64*256-1); } *dst = LCD_RGBPACK_LCD(r >> 9, g >> 8, b >> 9); #if LCD_WIDTH >= LCD_HEIGHT dst++; #else dst += LCD_WIDTH; #endif } while (dst < row_end); ysrc += stride; usrc += stride >> 1; vsrc += stride >> 1; #if LCD_WIDTH >= LCD_HEIGHT row_end += LCD_WIDTH; dst += LCD_WIDTH - width; #else row_end -= 1; dst -= LCD_WIDTH*width + 1; #endif } while (--linecounter > 0); #if LCD_WIDTH >= LCD_HEIGHT lcd_update_rect(x, y, width, height); #else lcd_update_rect(LCD_WIDTH - y - height, x, height, width); #endif }