1d42f6c69c5980110c16cd679f914c4e4e7caa29dJohn Hoford/* 2d42f6c69c5980110c16cd679f914c4e4e7caa29dJohn Hoford * Copyright (C) 2012 The Android Open Source Project 3d42f6c69c5980110c16cd679f914c4e4e7caa29dJohn Hoford * 4d42f6c69c5980110c16cd679f914c4e4e7caa29dJohn Hoford * Licensed under the Apache License, Version 2.0 (the "License"); 5d42f6c69c5980110c16cd679f914c4e4e7caa29dJohn Hoford * you may not use this file except in compliance with the License. 6d42f6c69c5980110c16cd679f914c4e4e7caa29dJohn Hoford * You may obtain a copy of the License at 7d42f6c69c5980110c16cd679f914c4e4e7caa29dJohn Hoford * 8d42f6c69c5980110c16cd679f914c4e4e7caa29dJohn Hoford * http://www.apache.org/licenses/LICENSE-2.0 9d42f6c69c5980110c16cd679f914c4e4e7caa29dJohn Hoford * 10d42f6c69c5980110c16cd679f914c4e4e7caa29dJohn Hoford * Unless required by applicable law or agreed to in writing, software 11d42f6c69c5980110c16cd679f914c4e4e7caa29dJohn Hoford * distributed under the License is distributed on an "AS IS" BASIS, 12d42f6c69c5980110c16cd679f914c4e4e7caa29dJohn Hoford * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13d42f6c69c5980110c16cd679f914c4e4e7caa29dJohn Hoford * See the License for the specific language governing permissions and 14d42f6c69c5980110c16cd679f914c4e4e7caa29dJohn Hoford * limitations under the License. 15d42f6c69c5980110c16cd679f914c4e4e7caa29dJohn Hoford */ 16d42f6c69c5980110c16cd679f914c4e4e7caa29dJohn Hoford 17d42f6c69c5980110c16cd679f914c4e4e7caa29dJohn Hoford#include "filters.h" 18d42f6c69c5980110c16cd679f914c4e4e7caa29dJohn Hoford 19d42f6c69c5980110c16cd679f914c4e4e7caa29dJohn Hofordvoid JNIFUNCF(ImageFilterHue, nativeApplyFilter, jobject bitmap, jint width, jint height, jfloatArray matrix) 20d42f6c69c5980110c16cd679f914c4e4e7caa29dJohn Hoford{ 21d42f6c69c5980110c16cd679f914c4e4e7caa29dJohn Hoford char* destination = 0; 22d42f6c69c5980110c16cd679f914c4e4e7caa29dJohn Hoford AndroidBitmap_lockPixels(env, bitmap, (void**) &destination); 23d42f6c69c5980110c16cd679f914c4e4e7caa29dJohn Hoford unsigned char * rgb = (unsigned char * )destination; 24d42f6c69c5980110c16cd679f914c4e4e7caa29dJohn Hoford int i; 25d42f6c69c5980110c16cd679f914c4e4e7caa29dJohn Hoford int len = width * height * 4; 26d42f6c69c5980110c16cd679f914c4e4e7caa29dJohn Hoford jfloat* mat = (*env)->GetFloatArrayElements(env, matrix,0); 27d42f6c69c5980110c16cd679f914c4e4e7caa29dJohn Hoford 28d42f6c69c5980110c16cd679f914c4e4e7caa29dJohn Hoford for (i = 0; i < len; i+=4) 29d42f6c69c5980110c16cd679f914c4e4e7caa29dJohn Hoford { 30d42f6c69c5980110c16cd679f914c4e4e7caa29dJohn Hoford int r = rgb[RED]; 31d42f6c69c5980110c16cd679f914c4e4e7caa29dJohn Hoford int g = rgb[GREEN]; 32d42f6c69c5980110c16cd679f914c4e4e7caa29dJohn Hoford int b = rgb[BLUE]; 33d42f6c69c5980110c16cd679f914c4e4e7caa29dJohn Hoford 34d42f6c69c5980110c16cd679f914c4e4e7caa29dJohn Hoford float rf = r*mat[0] + g*mat[4] + b*mat[8] + mat[12]; 35d42f6c69c5980110c16cd679f914c4e4e7caa29dJohn Hoford float gf = r*mat[1] + g*mat[5] + b*mat[9] + mat[13]; 36d42f6c69c5980110c16cd679f914c4e4e7caa29dJohn Hoford float bf = r*mat[2] + g*mat[6] + b*mat[10] + mat[14]; 37d42f6c69c5980110c16cd679f914c4e4e7caa29dJohn Hoford 38d42f6c69c5980110c16cd679f914c4e4e7caa29dJohn Hoford rgb[RED] = clamp((int)rf); 39d42f6c69c5980110c16cd679f914c4e4e7caa29dJohn Hoford rgb[GREEN] = clamp((int)gf); 40d42f6c69c5980110c16cd679f914c4e4e7caa29dJohn Hoford rgb[BLUE] = clamp((int)bf); 41d42f6c69c5980110c16cd679f914c4e4e7caa29dJohn Hoford } 42d42f6c69c5980110c16cd679f914c4e4e7caa29dJohn Hoford 43d42f6c69c5980110c16cd679f914c4e4e7caa29dJohn Hoford (*env)->ReleaseFloatArrayElements(env, matrix, mat, 0); 44d42f6c69c5980110c16cd679f914c4e4e7caa29dJohn Hoford AndroidBitmap_unlockPixels(env, bitmap); 45d42f6c69c5980110c16cd679f914c4e4e7caa29dJohn Hoford} 46d42f6c69c5980110c16cd679f914c4e4e7caa29dJohn Hoford 47