| /* |
| * Copyright (C) 2007 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 <stdio.h> |
| #include <assert.h> |
| |
| #include <ui/PixelFormat.h> |
| |
| #include "jni.h" |
| #include "JNIHelp.h" |
| #include <android_runtime/AndroidRuntime.h> |
| #include <utils/misc.h> |
| |
| // ---------------------------------------------------------------------------- |
| |
| namespace android { |
| |
| // ---------------------------------------------------------------------------- |
| |
| struct offsets_t { |
| jfieldID bytesPerPixel; |
| jfieldID bitsPerPixel; |
| }; |
| |
| static offsets_t offsets; |
| |
| // ---------------------------------------------------------------------------- |
| |
| static void android_graphics_getPixelFormatInfo( |
| JNIEnv* env, jobject clazz, jint format, jobject pixelFormatObject) |
| { |
| PixelFormatInfo info; |
| status_t err; |
| |
| // we need this for backward compatibility with PixelFormat's |
| // deprecated constants |
| switch (format) { |
| case HAL_PIXEL_FORMAT_YCbCr_422_SP: |
| // defined as the bytes per pixel of the Y plane |
| info.bytesPerPixel = 1; |
| info.bitsPerPixel = 16; |
| goto done; |
| case HAL_PIXEL_FORMAT_YCrCb_420_SP: |
| // defined as the bytes per pixel of the Y plane |
| info.bytesPerPixel = 1; |
| info.bitsPerPixel = 12; |
| goto done; |
| case HAL_PIXEL_FORMAT_YCbCr_422_I: |
| // defined as the bytes per pixel of the Y plane |
| info.bytesPerPixel = 1; |
| info.bitsPerPixel = 16; |
| goto done; |
| } |
| |
| err = getPixelFormatInfo(format, &info); |
| if (err < 0) { |
| jniThrowException(env, "java/lang/IllegalArgumentException", NULL); |
| return; |
| } |
| |
| done: |
| env->SetIntField(pixelFormatObject, offsets.bytesPerPixel, info.bytesPerPixel); |
| env->SetIntField(pixelFormatObject, offsets.bitsPerPixel, info.bitsPerPixel); |
| } |
| // ---------------------------------------------------------------------------- |
| |
| const char* const kClassPathName = "android/graphics/PixelFormat"; |
| |
| static void nativeClassInit(JNIEnv* env, jclass clazz); |
| |
| static JNINativeMethod gMethods[] = { |
| { "nativeClassInit", "()V", |
| (void*)nativeClassInit }, |
| { "getPixelFormatInfo", "(ILandroid/graphics/PixelFormat;)V", |
| (void*)android_graphics_getPixelFormatInfo |
| } |
| }; |
| |
| void nativeClassInit(JNIEnv* env, jclass clazz) |
| { |
| offsets.bytesPerPixel = env->GetFieldID(clazz, "bytesPerPixel", "I"); |
| offsets.bitsPerPixel = env->GetFieldID(clazz, "bitsPerPixel", "I"); |
| } |
| |
| int register_android_graphics_PixelFormat(JNIEnv* env) |
| { |
| return AndroidRuntime::registerNativeMethods(env, |
| kClassPathName, gMethods, NELEM(gMethods)); |
| } |
| |
| }; |