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Implement HAVE_LCD_ENABLE and lcd_update_rect(). When Rockbox runs in the background

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this greatly reduces CPU load. lcd_update_rect shoves a bit as well.

CPU usage with Rockbox in background is between 3% (with a 200kbps vbr mp3) and 12% (320kbps cbr mp3), so it's low but still dependent on codecs and even particular files.
Driving a WPS with peakmeter, e.g. the builtin one, adds about 30% cpu usage.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27689 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Thomas Martitz 2010-08-04 01:03:25 +00:00
parent f66a233bdb
commit 594110e962
4 changed files with 98 additions and 24 deletions
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60
firmware/target/hosted/android/lcd-android.c
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@ -31,6 +31,9 @@ extern jobject RockboxService_instance;
static jobject Framebuffer_instance;
static jmethodID java_lcd_update;
static jmethodID java_lcd_update_rect;
static bool display_on;
void lcd_init_device(void)
{
@ -52,13 +55,17 @@ void lcd_init_device(void)
* our framebuffer */
jmethodID java_init_lcd = (*env_ptr)->GetMethodID(env_ptr,
Framebuffer_class,
"java_lcd_init",
"(IILjava/nio/ByteBuffer;)V");
java_lcd_update = (*env_ptr)->GetMethodID(env_ptr,
Framebuffer_class,
"java_lcd_update",
"()V");
Framebuffer_class,
"java_lcd_init",
"(IILjava/nio/ByteBuffer;)V");
java_lcd_update = (*env_ptr)->GetMethodID(env_ptr,
Framebuffer_class,
"java_lcd_update",
"()V");
java_lcd_update_rect = (*env_ptr)->GetMethodID(env_ptr,
Framebuffer_class,
"java_lcd_update_rect",
"(IIII)V");
/* map the framebuffer to a ByteBuffer, this way lcd updates will
* be directly feched from the framebuffer */
@ -70,21 +77,50 @@ void lcd_init_device(void)
Framebuffer_instance,
java_init_lcd,
LCD_WIDTH, LCD_HEIGHT, buf);
display_on = true;
}
void lcd_update()
void lcd_update(void)
{
/* tell the system we're ready for drawing */
(*env_ptr)->CallVoidMethod(env_ptr, Framebuffer_instance, java_lcd_update);
if (display_on)
(*env_ptr)->CallVoidMethod(env_ptr, Framebuffer_instance, java_lcd_update);
}
void lcd_update_rect(int x, int y, int height, int width)
{
/* can't do partial updates yet */
(void)x; (void)y; (void)height; (void)width;
lcd_update();
if (display_on)
{
(*env_ptr)->CallVoidMethod(env_ptr, Framebuffer_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 */
/**