/*************************************************************************** * __________ __ ___. * 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 "config.h" #include "system.h" #include "lcd.h" extern JNIEnv *env_ptr; extern jclass RockboxService_class; extern jobject RockboxService_instance; static jclass RockboxFramebuffer_class; static jobject RockboxFramebuffer_instance; static jmethodID java_lcd_update; static jmethodID java_lcd_update_rect; static bool display_on; void lcd_init_device(void) { JNIEnv e = *env_ptr; RockboxFramebuffer_class = e->FindClass(env_ptr, "org/rockbox/RockboxFramebuffer"); /* instantiate a RockboxFramebuffer instance * * Pass lcd width and height and our framebuffer so the java layer * can create a Bitmap which directly maps to it **/ /* map the framebuffer to a ByteBuffer, this way lcd updates will * be directly feched from the framebuffer */ jobject buf = e->NewDirectByteBuffer(env_ptr, lcd_framebuffer, (jlong)sizeof(lcd_framebuffer)); jmethodID constructor = e->GetMethodID(env_ptr, RockboxFramebuffer_class, "", "(Landroid/content/Context;" /* Service */ "II" /* lcd width/height */ "Ljava/nio/ByteBuffer;)V"); /* ByteBuffer */ RockboxFramebuffer_instance = e->NewObject(env_ptr, RockboxFramebuffer_class, constructor, RockboxService_instance, (jint)LCD_WIDTH, (jint)LCD_HEIGHT, buf); /* cache update functions */ java_lcd_update = (*env_ptr)->GetMethodID(env_ptr, RockboxFramebuffer_class, "java_lcd_update", "()V"); java_lcd_update_rect = (*env_ptr)->GetMethodID(env_ptr, RockboxFramebuffer_class, "java_lcd_update_rect", "(IIII)V"); /* at last, give RockboxService the Framebuffer instance */ jfieldID id = e->GetStaticFieldID(env_ptr, RockboxService_class, "fb", "Lorg/rockbox/RockboxFramebuffer;"); e->SetStaticObjectField(env_ptr, RockboxService_class, id, RockboxFramebuffer_instance); display_on = true; } void lcd_update(void) { /* tell the system we're ready for drawing */ if (display_on) (*env_ptr)->CallVoidMethod(env_ptr, RockboxFramebuffer_instance, java_lcd_update); } void lcd_update_rect(int x, int y, int height, int width) { if (display_on) { (*env_ptr)->CallVoidMethod(env_ptr, RockboxFramebuffer_instance, java_lcd_update_rect, x, y, height, width); } } bool lcd_active(void) { return display_on; } /* * (un)block lcd updates. * * Notice: This is called from the activity thread, so take it * as interrupt context and take care what the event callback does * (it shouldn't block in particular * * the 1s are needed due to strange naming conventions... **/ JNIEXPORT void JNICALL Java_org_rockbox_RockboxFramebuffer_set_1lcd_1active(JNIEnv *e, jobject this, jint active) { (void)e; (void)this; display_on = active != 0; if (active) send_event(LCD_EVENT_ACTIVATION, NULL); } /* 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 }