1 /*
2 * Copyright (C) 2017 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 #define LOG_TAG "HardwareBuffer"
18
19 #include "jni.h"
20 #include <nativehelper/JNIHelp.h>
21
22 #include "android_os_Parcel.h"
23 #include "android/graphics/GraphicsJNI.h"
24 #include "android/graphics/GraphicBuffer.h"
25
26 #include <android/hardware_buffer.h>
27 #include <android_runtime/android_hardware_HardwareBuffer.h>
28 #include <android_runtime/AndroidRuntime.h>
29 #include <android_runtime/Log.h>
30 #include <private/android/AHardwareBufferHelpers.h>
31
32 #include <binder/Parcel.h>
33
34 #include <ui/GraphicBuffer.h>
35 #include <private/gui/ComposerService.h>
36
37 #include <hardware/gralloc1.h>
38 #include <grallocusage/GrallocUsageConversion.h>
39
40 #include "core_jni_helpers.h"
41
42 using namespace android;
43
44 // ----------------------------------------------------------------------------
45 // Defines
46 // ----------------------------------------------------------------------------
47
48 // Debug
49 static constexpr bool kDebugGraphicBuffer = false;
50
51 // ----------------------------------------------------------------------------
52 // Types
53 // ----------------------------------------------------------------------------
54
55 static struct {
56 jclass clazz;
57 jfieldID mNativeObject;
58 jmethodID ctor;
59 } gHardwareBufferClassInfo;
60
61 class GraphicBufferWrapper {
62 public:
GraphicBufferWrapper(const sp<GraphicBuffer> & buffer)63 explicit GraphicBufferWrapper(const sp<GraphicBuffer>& buffer)
64 : buffer(buffer) {}
65
66 sp<GraphicBuffer> buffer;
67 };
68
69 // ----------------------------------------------------------------------------
70 // HardwareBuffer lifecycle
71 // ----------------------------------------------------------------------------
72
android_hardware_HardwareBuffer_create(JNIEnv * env,jobject clazz,jint width,jint height,jint format,jint layers,jlong usage)73 static jlong android_hardware_HardwareBuffer_create(JNIEnv* env, jobject clazz,
74 jint width, jint height, jint format, jint layers, jlong usage) {
75
76 // TODO: update createGraphicBuffer to take two 64-bit values.
77 int pixelFormat = android_hardware_HardwareBuffer_convertToPixelFormat(format);
78 if (pixelFormat == 0) {
79 if (kDebugGraphicBuffer) {
80 ALOGW("createGraphicBufferAlloc() invalid pixel format in HardwareBuffer.create()");
81 }
82 return NULL;
83 }
84
85 uint64_t grallocUsage = AHardwareBuffer_convertToGrallocUsageBits(usage);
86 sp<GraphicBuffer> buffer = new GraphicBuffer(width, height, pixelFormat, layers,
87 grallocUsage, std::string("HardwareBuffer pid [") + std::to_string(getpid()) +"]");
88 status_t error = buffer->initCheck();
89 if (error < 0) {
90 if (kDebugGraphicBuffer) {
91 ALOGW("createGraphicBuffer() failed in HardwareBuffer.create()");
92 }
93 return NULL;
94 }
95
96 GraphicBufferWrapper* wrapper = new GraphicBufferWrapper(buffer);
97 return reinterpret_cast<jlong>(wrapper);
98 }
99
android_hardware_HardwareBuffer_createFromGraphicBuffer(JNIEnv * env,jobject clazz,jobject graphicBuffer)100 static jlong android_hardware_HardwareBuffer_createFromGraphicBuffer(JNIEnv* env, jobject clazz, jobject graphicBuffer) {
101 sp<GraphicBuffer> buffer(graphicBufferForJavaObject(env, graphicBuffer));
102 GraphicBufferWrapper* wrapper = new GraphicBufferWrapper(buffer);
103 return reinterpret_cast<jlong>(wrapper);
104 }
105
destroyWrapper(GraphicBufferWrapper * wrapper)106 static void destroyWrapper(GraphicBufferWrapper* wrapper) {
107 delete wrapper;
108 }
109
android_hardware_HardwareBuffer_getNativeFinalizer(JNIEnv * env,jobject clazz)110 static jlong android_hardware_HardwareBuffer_getNativeFinalizer(JNIEnv* env, jobject clazz) {
111 return static_cast<jlong>(reinterpret_cast<uintptr_t>(&destroyWrapper));
112 }
113
android_hardware_HardwareBuffer_isSupported(JNIEnv * env,jobject clazz,jint width,jint height,jint format,jint layers,jlong usage)114 static jboolean android_hardware_HardwareBuffer_isSupported(JNIEnv* env, jobject clazz,
115 jint width, jint height, jint format, jint layers, jlong usage) {
116
117 AHardwareBuffer_Desc desc;
118 desc.width = width;
119 desc.height = height;
120 desc.format = format;
121 desc.layers = layers;
122 desc.usage = usage;
123 desc.stride = 0;
124 desc.rfu0 = 0;
125 desc.rfu1 = 0;
126 return AHardwareBuffer_isSupported(&desc);
127 }
128
129 //----------------------------------------------------------------------------
130 // Accessors
131 // ----------------------------------------------------------------------------
132
GraphicBufferWrapper_to_GraphicBuffer(jlong nativeObject)133 static inline GraphicBuffer* GraphicBufferWrapper_to_GraphicBuffer(
134 jlong nativeObject) {
135 return reinterpret_cast<GraphicBufferWrapper*>(nativeObject)->buffer.get();
136 }
137
android_hardware_HardwareBuffer_getWidth(JNIEnv * env,jobject clazz,jlong nativeObject)138 static jint android_hardware_HardwareBuffer_getWidth(JNIEnv* env, jobject clazz,
139 jlong nativeObject) {
140 GraphicBuffer* buffer = GraphicBufferWrapper_to_GraphicBuffer(nativeObject);
141 return static_cast<jint>(buffer->getWidth());
142 }
143
android_hardware_HardwareBuffer_getHeight(JNIEnv * env,jobject clazz,jlong nativeObject)144 static jint android_hardware_HardwareBuffer_getHeight(JNIEnv* env,
145 jobject clazz, jlong nativeObject) {
146 GraphicBuffer* buffer = GraphicBufferWrapper_to_GraphicBuffer(nativeObject);
147 return static_cast<jint>(buffer->getHeight());
148 }
149
android_hardware_HardwareBuffer_getFormat(JNIEnv * env,jobject clazz,jlong nativeObject)150 static jint android_hardware_HardwareBuffer_getFormat(JNIEnv* env,
151 jobject clazz, jlong nativeObject) {
152 GraphicBuffer* buffer = GraphicBufferWrapper_to_GraphicBuffer(nativeObject);
153 return static_cast<jint>(android_hardware_HardwareBuffer_convertFromPixelFormat(
154 buffer->getPixelFormat()));
155 }
156
android_hardware_HardwareBuffer_getLayers(JNIEnv * env,jobject clazz,jlong nativeObject)157 static jint android_hardware_HardwareBuffer_getLayers(JNIEnv* env,
158 jobject clazz, jlong nativeObject) {
159 GraphicBuffer* buffer = GraphicBufferWrapper_to_GraphicBuffer(nativeObject);
160 return static_cast<jint>(buffer->getLayerCount());
161 }
162
android_hardware_HardwareBuffer_getUsage(JNIEnv * env,jobject clazz,jlong nativeObject)163 static jlong android_hardware_HardwareBuffer_getUsage(JNIEnv* env,
164 jobject clazz, jlong nativeObject) {
165 GraphicBuffer* buffer = GraphicBufferWrapper_to_GraphicBuffer(nativeObject);
166 return AHardwareBuffer_convertFromGrallocUsageBits(buffer->getUsage());
167 }
168
169 // ----------------------------------------------------------------------------
170 // Serialization
171 // ----------------------------------------------------------------------------
172
android_hardware_HardwareBuffer_write(JNIEnv * env,jobject clazz,jlong nativeObject,jobject dest)173 static void android_hardware_HardwareBuffer_write(JNIEnv* env, jobject clazz,
174 jlong nativeObject, jobject dest) {
175 GraphicBuffer* buffer = GraphicBufferWrapper_to_GraphicBuffer(nativeObject);
176 Parcel* parcel = parcelForJavaObject(env, dest);
177 if (parcel) {
178 parcel->write(*buffer);
179 }
180 }
181
android_hardware_HardwareBuffer_read(JNIEnv * env,jobject clazz,jobject in)182 static jlong android_hardware_HardwareBuffer_read(JNIEnv* env, jobject clazz,
183 jobject in) {
184 Parcel* parcel = parcelForJavaObject(env, in);
185 if (parcel) {
186 sp<GraphicBuffer> buffer = new GraphicBuffer();
187 parcel->read(*buffer);
188 return reinterpret_cast<jlong>(new GraphicBufferWrapper(buffer));
189 }
190
191 return NULL;
192 }
193
194 // ----------------------------------------------------------------------------
195 // Public functions
196 // ----------------------------------------------------------------------------
197
198 namespace android {
199
android_hardware_HardwareBuffer_getNativeHardwareBuffer(JNIEnv * env,jobject hardwareBufferObj)200 AHardwareBuffer* android_hardware_HardwareBuffer_getNativeHardwareBuffer(
201 JNIEnv* env, jobject hardwareBufferObj) {
202 if (env->IsInstanceOf(hardwareBufferObj, gHardwareBufferClassInfo.clazz)) {
203 GraphicBuffer* buffer = GraphicBufferWrapper_to_GraphicBuffer(
204 env->GetLongField(hardwareBufferObj, gHardwareBufferClassInfo.mNativeObject));
205 return AHardwareBuffer_from_GraphicBuffer(buffer);
206
207 } else {
208 return nullptr;
209 }
210 }
211
android_hardware_HardwareBuffer_createFromAHardwareBuffer(JNIEnv * env,AHardwareBuffer * hardwareBuffer)212 jobject android_hardware_HardwareBuffer_createFromAHardwareBuffer(
213 JNIEnv* env, AHardwareBuffer* hardwareBuffer) {
214 GraphicBuffer* buffer = AHardwareBuffer_to_GraphicBuffer(hardwareBuffer);
215 GraphicBufferWrapper* wrapper = new GraphicBufferWrapper(buffer);
216 jobject hardwareBufferObj = env->NewObject(gHardwareBufferClassInfo.clazz,
217 gHardwareBufferClassInfo.ctor, reinterpret_cast<jlong>(wrapper));
218 if (hardwareBufferObj == NULL) {
219 delete wrapper;
220 if (env->ExceptionCheck()) {
221 ALOGE("Could not create instance of HardwareBuffer from AHardwareBuffer.");
222 LOGE_EX(env);
223 env->ExceptionClear();
224 }
225 return nullptr;
226 }
227 return hardwareBufferObj;
228 }
229
android_hardware_HardwareBuffer_convertFromPixelFormat(uint32_t format)230 uint32_t android_hardware_HardwareBuffer_convertFromPixelFormat(uint32_t format) {
231 return AHardwareBuffer_convertFromPixelFormat(format);
232 }
233
android_hardware_HardwareBuffer_convertToPixelFormat(uint32_t format)234 uint32_t android_hardware_HardwareBuffer_convertToPixelFormat(uint32_t format) {
235 return AHardwareBuffer_convertToPixelFormat(format);
236 }
237
android_hardware_HardwareBuffer_convertToGrallocUsageBits(uint64_t usage)238 uint64_t android_hardware_HardwareBuffer_convertToGrallocUsageBits(uint64_t usage) {
239 return AHardwareBuffer_convertToGrallocUsageBits(usage);
240 }
241
242 } // namespace android
243
244 // ----------------------------------------------------------------------------
245 // JNI Glue
246 // ----------------------------------------------------------------------------
247
248 const char* const kClassPathName = "android/hardware/HardwareBuffer";
249
250 static const JNINativeMethod gMethods[] = {
251 { "nCreateHardwareBuffer", "(IIIIJ)J",
252 (void*) android_hardware_HardwareBuffer_create },
253 { "nCreateFromGraphicBuffer", "(Landroid/graphics/GraphicBuffer;)J",
254 (void*) android_hardware_HardwareBuffer_createFromGraphicBuffer },
255 { "nGetNativeFinalizer", "()J",
256 (void*) android_hardware_HardwareBuffer_getNativeFinalizer },
257 { "nWriteHardwareBufferToParcel", "(JLandroid/os/Parcel;)V",
258 (void*) android_hardware_HardwareBuffer_write },
259 { "nReadHardwareBufferFromParcel", "(Landroid/os/Parcel;)J",
260 (void*) android_hardware_HardwareBuffer_read },
261 { "nIsSupported", "(IIIIJ)Z",
262 (void*) android_hardware_HardwareBuffer_isSupported },
263
264 // --------------- @FastNative ----------------------
265 { "nGetWidth", "(J)I", (void*) android_hardware_HardwareBuffer_getWidth },
266 { "nGetHeight", "(J)I", (void*) android_hardware_HardwareBuffer_getHeight },
267 { "nGetFormat", "(J)I", (void*) android_hardware_HardwareBuffer_getFormat },
268 { "nGetLayers", "(J)I", (void*) android_hardware_HardwareBuffer_getLayers },
269 { "nGetUsage", "(J)J", (void*) android_hardware_HardwareBuffer_getUsage },
270 };
271
register_android_hardware_HardwareBuffer(JNIEnv * env)272 int register_android_hardware_HardwareBuffer(JNIEnv* env) {
273 int err = RegisterMethodsOrDie(env, kClassPathName, gMethods,
274 NELEM(gMethods));
275
276 jclass clazz = FindClassOrDie(env, "android/hardware/HardwareBuffer");
277 gHardwareBufferClassInfo.clazz = MakeGlobalRefOrDie(env, clazz);
278 gHardwareBufferClassInfo.mNativeObject = GetFieldIDOrDie(env,
279 gHardwareBufferClassInfo.clazz, "mNativeObject", "J");
280 gHardwareBufferClassInfo.ctor = GetMethodIDOrDie(env,
281 gHardwareBufferClassInfo.clazz, "<init>", "(J)V");
282
283 return err;
284 }
285