Puneet Lall | 967b782 | 2014-08-07 17:05:38 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2014 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #include <jni.h> |
| 18 | #include <math.h> |
| 19 | #include <android/bitmap.h> |
| 20 | |
| 21 | #include "jpegutil.h" |
| 22 | |
| 23 | /** |
| 24 | * @param env the JNI environment |
| 25 | * @param yBuf the buffer containing the Y component of the image |
| 26 | * @param yPStride the stride between adjacent pixels in the same row in yBuf |
| 27 | * @param yRStride the stride between adjacent rows in yBuf |
| 28 | * @param cbBuf the buffer containing the Cb component of the image |
| 29 | * @param cbPStride the stride between adjacent pixels in the same row in cbBuf |
| 30 | * @param cbRStride the stride between adjacent rows in cbBuf |
| 31 | * @param crBuf the buffer containing the Cr component of the image |
| 32 | * @param crPStride the stride between adjacent pixels in the same row in crBuf |
| 33 | * @param crRStride the stride between adjacent rows in crBuf |
| 34 | */ |
| 35 | extern "C" JNIEXPORT jint JNICALL |
| 36 | Java_com_android_camera_util_JpegUtilNative_compressJpegFromYUV420pNative( |
| 37 | JNIEnv* env, jclass clazz, jint width, jint height, jobject yBuf, |
| 38 | jint yPStride, jint yRStride, jobject cbBuf, jint cbPStride, |
| 39 | jint cbRStride, jobject crBuf, jint crPStride, jint crRStride, |
| 40 | jobject outBuf, jint outBufCapacity, jint quality) { |
| 41 | jbyte* y = (jbyte*)env->GetDirectBufferAddress(yBuf); |
| 42 | jbyte* cb = (jbyte*)env->GetDirectBufferAddress(cbBuf); |
| 43 | jbyte* cr = (jbyte*)env->GetDirectBufferAddress(crBuf); |
| 44 | jbyte* out = (jbyte*)env->GetDirectBufferAddress(outBuf); |
| 45 | |
| 46 | jpegutil::Plane yP(width, height, width, height, (unsigned char*)y, yPStride, |
| 47 | yRStride); |
| 48 | jpegutil::Plane cbP(width, height, width / 2, height / 2, (unsigned char*)cb, |
| 49 | cbPStride, cbRStride); |
| 50 | jpegutil::Plane crP(width, height, width / 2, height / 2, (unsigned char*)cr, |
| 51 | crPStride, crRStride); |
| 52 | |
| 53 | auto flush = [](size_t numBytes) { |
| 54 | // do nothing |
| 55 | }; |
| 56 | |
| 57 | return jpegutil::compress(yP, cbP, crP, (unsigned char*)out, outBufCapacity, |
| 58 | flush, quality); |
| 59 | } |