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rockbox/firmware/target/hosted/android/lcd-android.c
Thomas Martitz 6538326ef2 Android: Fix black display after unzipping libmisc.so. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29527 a1c6a512-1295-4272-9138-f99709370657
2011-03-05 20:47:49 +00:00

357 lines
9.8 KiB
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/***************************************************************************
* __________ __ ___.
* 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 <jni.h>
#include <string.h>
#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 jobject native_buffer;
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;
RockboxFramebuffer_instance = fb_instance;
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");
native_buffer = e->NewDirectByteBuffer(env,
lcd_framebuffer,
(jlong)sizeof(lcd_framebuffer));
have_class = true;
}
/* 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, native_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;
/* 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)e; (void)this; (void)surfaceholder;
display_on = false;
}
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
}
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