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Commit 67fefdb9 authored by John Hoford's avatar John Hoford
Browse files

add support for black and white filters, add rotation API to tiny planet 

bug:7386370
bug:7389189
Change-Id: I1720893000c39edf28a356fb7b56634f004ef120
parent a850a543

jni/Android.mk

+1 −0
Original line number Diff line number Diff line
@@ -40,6 +40,7 @@ LOCAL_SRC_FILES := filters/bw.c \ 
                   filters/fx.c \

                   filters/wbalance.c \

                   filters/redeye.c \

                   filters/bwfilter.c \

                   filters/tinyplanet.cc



LOCAL_CFLAGS    += -ffast-math -O3 -funroll-loops

jni/filters/bwfilter.c

0 → 100644
+55 −0
Original line number Diff line number Diff line 
/*

 * Copyright (C) 2012 The Android Open Source Project

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 *      http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */



#include <math.h>

#include "filters.h"



void JNIFUNCF(ImageFilterBwFilter, nativeApplyFilter, jobject bitmap, jint width, jint height, jint rw, jint gw, jint bw)

{

    char* destination = 0;

    AndroidBitmap_lockPixels(env, bitmap, (void**) &destination);

    unsigned char * rgb = (unsigned char * )destination;

    float sr = rw;

    float sg = gw;

    float sb = bw;



    float min = MIN(sg,sb);

    min = MIN(sr,min);

    float max =  MAX(sg,sb);

    max = MAX(sr,max);

    float avg = (min+max)/2;

    sb /= avg;

    sg /= avg;

    sr /= avg;

    int i;

    int len = width * height * 4;



    for (i = 0; i < len; i+=4)

    {

        float r = sr *rgb[RED];

        float g = sg *rgb[GREEN];

        float b = sb *rgb[BLUE];

        min = MIN(g,b);

        min = MIN(r,min);

        max = MAX(g,b);

        max = MAX(r,max);

        avg =(min+max)/2;

        rgb[RED]   = CLAMP(avg);

        rgb[GREEN] = rgb[RED];

        rgb[BLUE]  = rgb[RED];

    }

    AndroidBitmap_unlockPixels(env, bitmap);

}

jni/filters/tinyplanet.cc

+5 −4
Original line number Diff line number Diff line
@@ -87,7 +87,7 @@ inline float wrap(float value, float dimension) { 
  return value - (dimension * floor(value/dimension));

}



void StereographicProjection(float scale, unsigned char* input_image,

void StereographicProjection(float scale, float angle, unsigned char* input_image,

                             int input_width, int input_height,

                             unsigned char* output_image, int output_width,

                             int output_height) {
@@ -106,7 +106,8 @@ void StereographicProjection(float scale, unsigned char* input_image, 


      // Convert to polar

      float r = hypotf(xf, yf);

      float theta = atan2(yf, xf);

      float theta = angle+atan2(yf, xf);

      if (theta>PI_F) theta-=2*PI_F;



      // Project onto plane

      float phi = 2 * atan(1 / r);
@@ -127,7 +128,7 @@ void StereographicProjection(float scale, unsigned char* input_image, 
}





void JNIFUNCF(ImageFilterTinyPlanet, nativeApplyFilter, jobject bitmap_in, jint width, jint height, jobject bitmap_out, jint output_size, jfloat scale)

void JNIFUNCF(ImageFilterTinyPlanet, nativeApplyFilter, jobject bitmap_in, jint width, jint height, jobject bitmap_out, jint output_size, jfloat scale,jfloat angle)

{

    char* source = 0;

    char* destination = 0;
@@ -136,7 +137,7 @@ void JNIFUNCF(ImageFilterTinyPlanet, nativeApplyFilter, jobject bitmap_in, jint 
    unsigned char * rgb_in = (unsigned char * )source;

    unsigned char * rgb_out = (unsigned char * )destination;



    StereographicProjection(scale, rgb_in, width, height, rgb_out, output_size, output_size);

    StereographicProjection(scale,angle, rgb_in, width, height, rgb_out, output_size, output_size);

    AndroidBitmap_unlockPixels(env, bitmap_in);

    AndroidBitmap_unlockPixels(env, bitmap_out);

}

res/layout/filtershow_activity.xml

+6 −0
Original line number Diff line number Diff line
@@ -358,6 +358,12 @@ 
                        android:src="@drawable/filtershow_button_colors_contrast"

                        android:text="@string/saturation" />



                    <com.android.gallery3d.filtershow.ui.ImageButtonTitle

                        android:id="@+id/bwfilterButton"

                        style="@style/FilterShowBottomButton"

                        android:src="@drawable/filtershow_button_colors_contrast"

                        android:text="@string/bwfilter" />



                </LinearLayout>

            </HorizontalScrollView>

        </FrameLayout>

res/values/filtershow_strings.xml

+2 −0
Original line number Diff line number Diff line
@@ -103,6 +103,8 @@ 
    <string name="vibrance">Vibrance</string>

    <!--  Label for the saturation filter button [CHAR LIMIT=15] -->

    <string name="saturation">Saturation</string>

    <!--  Label for the BW filter button [CHAR LIMIT=15] -->

    <string name="bwfilter">BW Filter</string>

    <!--  Label for the White Balance filter button [CHAR LIMIT=15] -->

    <string name="wbalance">Autocolor</string>

    <!--  Label for the Hue filter button [CHAR LIMIT=15] -->