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#include "global.h"
#include "brightness.h"
#include "GX_g2.h"
#include "MI_memory.h"
struct BrightnessData mainScreenBrightnessData;
struct BrightnessData subScreenBrightnessData;
THUMB_FUNC void DoBrightnessTransitionStep(struct BrightnessData *brightness)
{
BOOL transitionFinished = FALSE;
if (brightness->target_brightness !=
brightness->current_brightness +
brightness->transition_direction * brightness->step_size_integer &&
brightness->current_brightness != brightness->target_brightness)
{
brightness->current_brightness +=
brightness->transition_direction * brightness->step_size_integer;
brightness->fractional_count += brightness->step_size_fractional;
if (brightness->fractional_count >= brightness->step_count)
{
brightness->current_brightness += brightness->transition_direction;
if (brightness->current_brightness != brightness->target_brightness)
{
brightness->fractional_count -= brightness->step_count;
}
else
{
transitionFinished = TRUE;
}
}
}
else
{
brightness->current_brightness = brightness->target_brightness;
transitionFinished = TRUE;
}
if ((brightness->screenMask & 1) != 0)
{
G2x_SetBlendBrightness_(
®_G2_BLDCNT, brightness->surfaceMask, brightness->current_brightness);
}
else if ((brightness->screenMask & 2) != 0)
{
G2x_SetBlendBrightness_(
®_G2S_DB_BLDCNT, brightness->surfaceMask, brightness->current_brightness);
}
if (transitionFinished == TRUE)
{
brightness->transitionActive = FALSE;
}
}
THUMB_FUNC void InitBrightnessTransition(struct BrightnessData *brightnessData,
u16 step_count,
s16 target_brightness,
s16 start_brightness,
fx32 surfaceMask,
u32 screenMask)
{
GF_ASSERT(!brightnessData->transitionActive);
brightnessData->transitionActive = TRUE;
brightnessData->surfaceMask = (u8)surfaceMask;
brightnessData->screenMask = (u8)screenMask;
brightnessData->step_count = step_count;
brightnessData->target_brightness = target_brightness;
brightnessData->current_brightness = start_brightness;
brightnessData->brightness_diff = (s16)(start_brightness - target_brightness);
if (brightnessData->brightness_diff > 0)
{
brightnessData->transition_direction = -1;
}
else
{
brightnessData->transition_direction = 1;
brightnessData->brightness_diff *= -1;
}
brightnessData->step_size_integer = (s16)(brightnessData->brightness_diff / step_count);
brightnessData->step_size_fractional = (u16)(brightnessData->brightness_diff % step_count);
brightnessData->fractional_count = 0;
}
THUMB_FUNC void StartBrightnessTransition(
u16 step_count, s16 target_brightness, s16 start_brightness, fx32 surfaceMask, u32 screenMask)
{
if (step_count != 0)
{
if ((screenMask & 1) != 0)
{
G2x_SetBlendBrightness_(®_G2_BLDCNT, surfaceMask, start_brightness);
InitBrightnessTransition(&mainScreenBrightnessData,
step_count,
target_brightness,
start_brightness,
surfaceMask,
1);
}
if ((screenMask & 2) != 0)
{
G2x_SetBlendBrightness_(®_G2S_DB_BLDCNT, surfaceMask, start_brightness);
InitBrightnessTransition(&subScreenBrightnessData,
step_count,
target_brightness,
start_brightness,
surfaceMask,
2);
}
}
}
THUMB_FUNC void SetBrightness(fx32 brightness, fx32 surfaceMask, u32 screenMask)
{
if ((screenMask & 1) != 0)
{
G2x_SetBlendBrightness_(®_G2_BLDCNT, surfaceMask, brightness);
}
if ((screenMask & 2) != 0)
{
G2x_SetBlendBrightness_(®_G2S_DB_BLDCNT, surfaceMask, brightness);
}
InitScreenBrightnessData(screenMask);
}
THUMB_FUNC void InitAllScreenBrightnessData(void)
{
MI_CpuFill8(&mainScreenBrightnessData, 0, sizeof(struct BrightnessData));
MI_CpuFill8(&subScreenBrightnessData, 0, sizeof(struct BrightnessData));
mainScreenBrightnessData.transitionActive = FALSE;
subScreenBrightnessData.transitionActive = FALSE;
}
THUMB_FUNC void InitScreenBrightnessData(u32 screenMask)
{
if (screenMask & 1)
{
MI_CpuFill8(&mainScreenBrightnessData, 0, sizeof(struct BrightnessData));
mainScreenBrightnessData.transitionActive = FALSE;
}
if (screenMask & 2)
{
MI_CpuFill8(&subScreenBrightnessData, 0, sizeof(struct BrightnessData));
subScreenBrightnessData.transitionActive = FALSE;
}
}
THUMB_FUNC void DoAllScreenBrightnessTransitionStep(void)
{
if (mainScreenBrightnessData.transitionActive)
{
DoBrightnessTransitionStep(&mainScreenBrightnessData);
}
if (subScreenBrightnessData.transitionActive)
{
DoBrightnessTransitionStep(&subScreenBrightnessData);
}
}
THUMB_FUNC BOOL IsBrightnessTransitionActive(u32 screenMask)
{
if (screenMask == 3)
{
if (!mainScreenBrightnessData.transitionActive && !subScreenBrightnessData.transitionActive)
{
return TRUE;
}
}
else if (screenMask == 1)
{
if (!mainScreenBrightnessData.transitionActive)
{
return TRUE;
}
}
else if (screenMask == 2)
{
if (!subScreenBrightnessData.transitionActive)
{
return TRUE;
}
}
return FALSE;
}
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