046cec3aa7
The environment is fine to share in general, just not across OS threads, so it's only needed for functions which are possibly called from multiple OS threads (only 1 currently). git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29601 a1c6a512-1295-4272-9138-f99709370657
365 lines
9.9 KiB
C
365 lines
9.9 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (c) 2010 Thomas Martitz
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include <jni.h>
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#include <string.h>
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#include "config.h"
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#include "system.h"
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#include "kernel.h"
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#include "lcd.h"
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#include "button.h"
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extern JNIEnv *env_ptr;
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extern jobject RockboxService_instance;
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static jobject RockboxFramebuffer_instance;
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static jmethodID java_lcd_update;
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static jmethodID java_lcd_update_rect;
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static jmethodID java_lcd_init;
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static int dpi;
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static int scroll_threshold;
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static bool display_on;
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/* this might actually be called before lcd_init_device() or even main(), so
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* be sure to only access static storage initalized at library loading,
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* and not more */
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void connect_with_java(JNIEnv* env, jobject fb_instance)
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{
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JNIEnv e = *env;
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static bool have_class;
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if (!have_class)
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{
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jclass fb_class = e->GetObjectClass(env, fb_instance);
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/* cache update functions */
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java_lcd_update = e->GetMethodID(env, fb_class,
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"java_lcd_update",
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"()V");
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java_lcd_update_rect = e->GetMethodID(env, fb_class,
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"java_lcd_update_rect",
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"(IIII)V");
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jmethodID get_dpi = e->GetMethodID(env, fb_class,
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"getDpi", "()I");
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jmethodID thresh = e->GetMethodID(env, fb_class,
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"getScrollThreshold", "()I");
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/* these don't change with new instances so call them now */
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dpi = e->CallIntMethod(env, fb_instance, get_dpi);
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scroll_threshold = e->CallIntMethod(env, fb_instance, thresh);
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java_lcd_init = e->GetMethodID(env, fb_class,
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"java_lcd_init",
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"(IILjava/nio/ByteBuffer;)V");
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have_class = true;
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}
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/* Create native_buffer */
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jobject buffer = (*env)->NewDirectByteBuffer(env, lcd_framebuffer,
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(jlong) sizeof(lcd_framebuffer));
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/* we need to setup parts for the java object every time */
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(*env)->CallVoidMethod(env, fb_instance, java_lcd_init,
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(jint)LCD_WIDTH, (jint)LCD_HEIGHT, buffer);
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}
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/*
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* Do nothing here and connect with the java object later (if it isn't already)
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*/
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void lcd_init_device(void)
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{
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}
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void lcd_update(void)
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{
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if (display_on)
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(*env_ptr)->CallVoidMethod(env_ptr, RockboxFramebuffer_instance,
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java_lcd_update);
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}
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void lcd_update_rect(int x, int y, int width, int height)
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{
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if (display_on)
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(*env_ptr)->CallVoidMethod(env_ptr, RockboxFramebuffer_instance,
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java_lcd_update_rect, x, y, width, height);
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}
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/*
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* this is called when the surface is created, which called is everytime
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* the activity is brought in front and the RockboxFramebuffer gains focus
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*
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* Note this is considered interrupt context
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*/
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JNIEXPORT void JNICALL
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Java_org_rockbox_RockboxFramebuffer_surfaceCreated(JNIEnv *env, jobject this,
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jobject surfaceholder)
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{
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(void)surfaceholder;
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/* Update RockboxFramebuffer_instance */
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RockboxFramebuffer_instance = (*env)->NewGlobalRef(env, this);
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/* possibly a new instance - reconnect */
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connect_with_java(env, this);
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display_on = true;
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send_event(LCD_EVENT_ACTIVATION, NULL);
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/* Force an update, since the newly created surface is initially black
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* waiting for the next normal update results in a longish black screen */
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queue_post(&button_queue, BUTTON_FORCE_REDRAW, 0);
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}
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/*
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* the surface is destroyed everytime the RockboxFramebuffer loses focus and
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* goes invisible
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*/
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JNIEXPORT void JNICALL
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Java_org_rockbox_RockboxFramebuffer_surfaceDestroyed(JNIEnv *e, jobject this,
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jobject surfaceholder)
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{
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(void)this; (void)surfaceholder;
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display_on = false;
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(*e)->DeleteGlobalRef(e, RockboxFramebuffer_instance);
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RockboxFramebuffer_instance = NULL;
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}
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bool lcd_active(void)
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{
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return display_on;
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}
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int lcd_get_dpi(void)
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{
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return dpi;
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}
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int touchscreen_get_scroll_threshold(void)
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{
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return scroll_threshold;
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}
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/* below is a plain copy from lcd-sdl.c */
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/**
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* |R| |1.000000 -0.000001 1.402000| |Y'|
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* |G| = |1.000000 -0.334136 -0.714136| |Pb|
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* |B| |1.000000 1.772000 0.000000| |Pr|
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* Scaled, normalized, rounded and tweaked to yield RGB 565:
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* |R| |74 0 101| |Y' - 16| >> 9
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* |G| = |74 -24 -51| |Cb - 128| >> 8
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* |B| |74 128 0| |Cr - 128| >> 9
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*/
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#define YFAC (74)
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#define RVFAC (101)
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#define GUFAC (-24)
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#define GVFAC (-51)
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#define BUFAC (128)
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static inline int clamp(int val, int min, int max)
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{
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if (val < min)
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val = min;
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else if (val > max)
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val = max;
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return val;
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}
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void lcd_yuv_set_options(unsigned options)
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{
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(void)options;
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}
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/* Draw a partial YUV colour bitmap - similiar behavior to lcd_blit_yuv
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in the core */
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void lcd_blit_yuv(unsigned char * const src[3],
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int src_x, int src_y, int stride,
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int x, int y, int width, int height)
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{
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const unsigned char *ysrc, *usrc, *vsrc;
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int linecounter;
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fb_data *dst, *row_end;
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long z;
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/* width and height must be >= 2 and an even number */
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width &= ~1;
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linecounter = height >> 1;
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#if LCD_WIDTH >= LCD_HEIGHT
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dst = &lcd_framebuffer[y][x];
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row_end = dst + width;
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#else
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dst = &lcd_framebuffer[x][LCD_WIDTH - y - 1];
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row_end = dst + LCD_WIDTH * width;
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#endif
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z = stride * src_y;
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ysrc = src[0] + z + src_x;
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usrc = src[1] + (z >> 2) + (src_x >> 1);
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vsrc = src[2] + (usrc - src[1]);
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/* stride => amount to jump from end of last row to start of next */
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stride -= width;
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/* upsampling, YUV->RGB conversion and reduction to RGB565 in one go */
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do
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{
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do
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{
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int y, cb, cr, rv, guv, bu, r, g, b;
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y = YFAC*(*ysrc++ - 16);
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cb = *usrc++ - 128;
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cr = *vsrc++ - 128;
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rv = RVFAC*cr;
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guv = GUFAC*cb + GVFAC*cr;
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bu = BUFAC*cb;
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r = y + rv;
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g = y + guv;
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b = y + bu;
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if ((unsigned)(r | g | b) > 64*256-1)
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{
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r = clamp(r, 0, 64*256-1);
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g = clamp(g, 0, 64*256-1);
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b = clamp(b, 0, 64*256-1);
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}
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*dst = LCD_RGBPACK_LCD(r >> 9, g >> 8, b >> 9);
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#if LCD_WIDTH >= LCD_HEIGHT
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dst++;
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#else
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dst += LCD_WIDTH;
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#endif
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y = YFAC*(*ysrc++ - 16);
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r = y + rv;
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g = y + guv;
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b = y + bu;
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if ((unsigned)(r | g | b) > 64*256-1)
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{
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r = clamp(r, 0, 64*256-1);
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g = clamp(g, 0, 64*256-1);
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b = clamp(b, 0, 64*256-1);
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}
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*dst = LCD_RGBPACK_LCD(r >> 9, g >> 8, b >> 9);
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#if LCD_WIDTH >= LCD_HEIGHT
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dst++;
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#else
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dst += LCD_WIDTH;
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#endif
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}
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while (dst < row_end);
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ysrc += stride;
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usrc -= width >> 1;
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vsrc -= width >> 1;
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#if LCD_WIDTH >= LCD_HEIGHT
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row_end += LCD_WIDTH;
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dst += LCD_WIDTH - width;
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#else
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row_end -= 1;
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dst -= LCD_WIDTH*width + 1;
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#endif
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do
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{
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int y, cb, cr, rv, guv, bu, r, g, b;
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y = YFAC*(*ysrc++ - 16);
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cb = *usrc++ - 128;
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cr = *vsrc++ - 128;
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rv = RVFAC*cr;
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guv = GUFAC*cb + GVFAC*cr;
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bu = BUFAC*cb;
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r = y + rv;
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g = y + guv;
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b = y + bu;
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if ((unsigned)(r | g | b) > 64*256-1)
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{
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r = clamp(r, 0, 64*256-1);
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g = clamp(g, 0, 64*256-1);
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b = clamp(b, 0, 64*256-1);
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}
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*dst = LCD_RGBPACK_LCD(r >> 9, g >> 8, b >> 9);
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#if LCD_WIDTH >= LCD_HEIGHT
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dst++;
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#else
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dst += LCD_WIDTH;
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#endif
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y = YFAC*(*ysrc++ - 16);
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r = y + rv;
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g = y + guv;
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b = y + bu;
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if ((unsigned)(r | g | b) > 64*256-1)
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{
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r = clamp(r, 0, 64*256-1);
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g = clamp(g, 0, 64*256-1);
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b = clamp(b, 0, 64*256-1);
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}
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*dst = LCD_RGBPACK_LCD(r >> 9, g >> 8, b >> 9);
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#if LCD_WIDTH >= LCD_HEIGHT
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dst++;
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#else
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dst += LCD_WIDTH;
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#endif
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}
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while (dst < row_end);
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ysrc += stride;
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usrc += stride >> 1;
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vsrc += stride >> 1;
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#if LCD_WIDTH >= LCD_HEIGHT
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row_end += LCD_WIDTH;
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dst += LCD_WIDTH - width;
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#else
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row_end -= 1;
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dst -= LCD_WIDTH*width + 1;
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#endif
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}
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while (--linecounter > 0);
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#if LCD_WIDTH >= LCD_HEIGHT
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lcd_update_rect(x, y, width, height);
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#else
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lcd_update_rect(LCD_WIDTH - y - height, x, height, width);
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#endif
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}
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