diff options
Diffstat (limited to 'jni/filters/shadows.c')
-rw-r--r-- | jni/filters/shadows.c | 58 |
1 files changed, 38 insertions, 20 deletions
diff --git a/jni/filters/shadows.c b/jni/filters/shadows.c index f812b93f8..38d64c8b5 100644 --- a/jni/filters/shadows.c +++ b/jni/filters/shadows.c @@ -17,23 +17,41 @@ #include <math.h> #include "filters.h" - void JNIFUNCF(ImageFilterShadows, nativeApplyFilter, jobject bitmap, jint width, jint height, jshortArray vlut) - { - char* destination = 0; - AndroidBitmap_lockPixels(env, bitmap, (void**) &destination); - unsigned char * rgb = (unsigned char * )destination; - int i; - int len = width * height * 4; - short* lut = (*env)->GetShortArrayElements(env, vlut,0); - unsigned short * hsv = (unsigned short *)malloc(3*sizeof(short)); - for (i = 0; i < len; i+=4) - { - rgb2hsv(rgb,i,hsv,0); - hsv[0] = lut[hsv[0]]; - hsv2rgb(hsv,0, rgb,i); - } - - (*env)->ReleaseShortArrayElements(env, vlut, lut, 0); - free(hsv); - AndroidBitmap_unlockPixels(env, bitmap); - } +void JNIFUNCF(ImageFilterShadows, nativeApplyFilter, jobject bitmap, jint width, jint height, float scale){ + double shadowFilterMap[] = { + -0.00591, 0.0001, + 1.16488, 0.01668, + -0.18027, -0.06791, + -0.12625, 0.09001, + 0.15065, -0.03897 + }; + + char* destination = 0; + AndroidBitmap_lockPixels(env, bitmap, (void**) &destination); + unsigned char * rgb = (unsigned char * )destination; + int i; + double s = (scale>=0)?scale:scale/5; + int len = width * height * 4; + + double *poly = (double *) malloc(5*sizeof(double)); + for (i = 0; i < 5; i++) { + poly[i] = fastevalPoly(shadowFilterMap+i*2,2 , s); + } + + unsigned short * hsv = (unsigned short *)malloc(3*sizeof(short)); + + for (i = 0; i < len; i+=4) + { + rgb2hsv(rgb,i,hsv,0); + + double v = (fastevalPoly(poly,5,hsv[0]/4080.)*4080); + if (v>4080) v = 4080; + hsv[0] = (unsigned short) ((v>0)?v:0); + + hsv2rgb(hsv,0, rgb,i); + } + + free(poly); + free(hsv); + AndroidBitmap_unlockPixels(env, bitmap); +} |