android_media_MediaRecorder.cpp revision d24b8183b93e781080b2c16c487e60d51c12da31
1/* 2 * Copyright (C) 2008 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_NDEBUG 0 18#define LOG_TAG "MediaRecorderJNI" 19#include <utils/Log.h> 20 21#include <ui/SurfaceComposerClient.h> 22#include <ui/ICameraService.h> 23#include <ui/Camera.h> 24#include <media/mediarecorder.h> 25#include <stdio.h> 26#include <assert.h> 27#include <limits.h> 28#include <unistd.h> 29#include <fcntl.h> 30#include <utils/threads.h> 31 32#include "jni.h" 33#include "JNIHelp.h" 34#include "android_runtime/AndroidRuntime.h" 35 36 37// ---------------------------------------------------------------------------- 38 39using namespace android; 40 41// ---------------------------------------------------------------------------- 42 43// helper function to extract a native Camera object from a Camera Java object 44extern sp<Camera> get_native_camera(JNIEnv *env, jobject thiz); 45 46struct fields_t { 47 jfieldID context; 48 jfieldID surface; 49 /* actually in android.view.Surface XXX */ 50 jfieldID surface_native; 51}; 52static fields_t fields; 53 54// ---------------------------------------------------------------------------- 55 56static sp<Surface> get_surface(JNIEnv* env, jobject clazz) 57{ 58 LOGV("get_surface"); 59 Surface* const p = (Surface*)env->GetIntField(clazz, fields.surface_native); 60 return sp<Surface>(p); 61} 62 63// Returns true if it throws an exception. 64static bool process_media_recorder_call(JNIEnv *env, status_t opStatus, const char* exception, const char* message) 65{ 66 LOGV("process_media_recorder_call"); 67 if (opStatus == (status_t)INVALID_OPERATION) { 68 jniThrowException(env, "java/lang/IllegalStateException", NULL); 69 return true; 70 } else if (opStatus != (status_t)OK) { 71 jniThrowException(env, exception, message); 72 return true; 73 } 74 return false; 75} 76 77static void android_media_MediaRecorder_setCamera(JNIEnv* env, jobject thiz, jobject camera) 78{ 79 sp<Camera> c = get_native_camera(env, camera); 80 MediaRecorder *mr = (MediaRecorder*)env->GetIntField(thiz, fields.context); 81 process_media_recorder_call(env, mr->setCamera(c->remote()), 82 "java/lang/RuntimeException", "setCamera failed."); 83} 84 85static void 86android_media_MediaRecorder_setVideoSource(JNIEnv *env, jobject thiz, jint vs) 87{ 88 LOGV("setVideoSource(%d)", vs); 89 if (vs < VIDEO_SOURCE_DEFAULT || vs > VIDEO_SOURCE_CAMERA) { 90 jniThrowException(env, "java/lang/IllegalArgumentException", "Invalid video source"); 91 return; 92 } 93 MediaRecorder *mr = (MediaRecorder *)env->GetIntField(thiz, fields.context); 94 process_media_recorder_call(env, mr->setVideoSource(vs), "java/lang/RuntimeException", "setVideoSource failed."); 95} 96 97static void 98android_media_MediaRecorder_setAudioSource(JNIEnv *env, jobject thiz, jint as) 99{ 100 LOGV("setAudioSource(%d)", as); 101 if (as < AUDIO_SOURCE_DEFAULT || as > AUDIO_SOURCE_MIC) { 102 jniThrowException(env, "java/lang/IllegalArgumentException", "Invalid audio source"); 103 return; 104 } 105 MediaRecorder *mr = (MediaRecorder *)env->GetIntField(thiz, fields.context); 106 process_media_recorder_call(env, mr->setAudioSource(as), "java/lang/RuntimeException", "setAudioSource failed."); 107} 108 109static void 110android_media_MediaRecorder_setOutputFormat(JNIEnv *env, jobject thiz, jint of) 111{ 112 LOGV("setOutputFormat(%d)", of); 113 if (of < OUTPUT_FORMAT_DEFAULT || of >= OUTPUT_FORMAT_LIST_END) { 114 jniThrowException(env, "java/lang/IllegalArgumentException", "Invalid output format"); 115 return; 116 } 117 MediaRecorder *mr = (MediaRecorder *)env->GetIntField(thiz, fields.context); 118 process_media_recorder_call(env, mr->setOutputFormat(of), "java/lang/RuntimeException", "setOutputFormat failed."); 119} 120 121static void 122android_media_MediaRecorder_setVideoEncoder(JNIEnv *env, jobject thiz, jint ve) 123{ 124 LOGV("setVideoEncoder(%d)", ve); 125 if (ve < VIDEO_ENCODER_DEFAULT || ve > VIDEO_ENCODER_MPEG_4_SP) { 126 jniThrowException(env, "java/lang/IllegalArgumentException", "Invalid video encoder"); 127 return; 128 } 129 MediaRecorder *mr = (MediaRecorder *)env->GetIntField(thiz, fields.context); 130 process_media_recorder_call(env, mr->setVideoEncoder(ve), "java/lang/RuntimeException", "setVideoEncoder failed."); 131} 132 133static void 134android_media_MediaRecorder_setAudioEncoder(JNIEnv *env, jobject thiz, jint ae) 135{ 136 LOGV("setAudioEncoder(%d)", ae); 137 if (ae < AUDIO_ENCODER_DEFAULT || ae > AUDIO_ENCODER_AMR_NB) { 138 jniThrowException(env, "java/lang/IllegalArgumentException", "Invalid audio encoder"); 139 return; 140 } 141 MediaRecorder *mr = (MediaRecorder *)env->GetIntField(thiz, fields.context); 142 process_media_recorder_call(env, mr->setAudioEncoder(ae), "java/lang/RuntimeException", "setAudioEncoder failed."); 143} 144 145static void 146android_media_MediaRecorder_setOutputFile(JNIEnv *env, jobject thiz, jstring path) 147{ 148 LOGV("setOutputFile"); 149 MediaRecorder *mr = (MediaRecorder *)env->GetIntField(thiz, fields.context); 150 151 if (path == NULL) { 152 jniThrowException(env, "java/lang/IllegalArgumentException", "Path is a NULL pointer"); 153 return; 154 } 155 const char *pathStr = env->GetStringUTFChars(path, NULL); 156 if (pathStr == NULL) { // Out of memory 157 jniThrowException(env, "java/lang/RuntimeException", "Out of memory"); 158 return; 159 } 160 status_t opStatus = mr->setOutputFile(pathStr); 161 162 // Make sure that local ref is released before a potential exception 163 env->ReleaseStringUTFChars(path, pathStr); 164 process_media_recorder_call(env, opStatus, "java/lang/RuntimeException", "setOutputFile failed."); 165} 166 167static void 168android_media_MediaRecorder_setVideoSize(JNIEnv *env, jobject thiz, jint width, jint height) 169{ 170 LOGV("setVideoSize(%d, %d)", width, height); 171 MediaRecorder *mr = (MediaRecorder *)env->GetIntField(thiz, fields.context); 172 173 if (width <= 0 || height <= 0) { 174 jniThrowException(env, "java/lang/IllegalArgumentException", "invalid video size"); 175 return; 176 } 177 process_media_recorder_call(env, mr->setVideoSize(width, height), "java/lang/RuntimeException", "setVideoSize failed."); 178} 179 180static void 181android_media_MediaRecorder_setVideoFrameRate(JNIEnv *env, jobject thiz, jint rate) 182{ 183 LOGV("setVideoFrameRate(%d)", rate); 184 if (rate <= 0 || rate > MEDIA_RECORDER_MAX_FRAME_RATE) { 185 jniThrowException(env, "java/lang/IllegalArgumentException", "invalid frame rate"); 186 return; 187 } 188 MediaRecorder *mr = (MediaRecorder *)env->GetIntField(thiz, fields.context); 189 process_media_recorder_call(env, mr->setVideoFrameRate(rate), "java/lang/RuntimeException", "setVideoFrameRate failed."); 190} 191 192static void 193android_media_MediaRecorder_prepare(JNIEnv *env, jobject thiz) 194{ 195 LOGV("prepare"); 196 MediaRecorder *mr = (MediaRecorder *)env->GetIntField(thiz, fields.context); 197 198 jobject surface = env->GetObjectField(thiz, fields.surface); 199 if (surface != NULL) { 200 const sp<Surface>& native_surface = get_surface(env, surface); 201 LOGI("prepare: surface=%p (id=%d)", native_surface.get(), native_surface->ID()); 202 if (process_media_recorder_call(env, mr->setPreviewSurface(native_surface), "java/lang/RuntimeException", "setPreviewSurface failed.")) { 203 return; 204 } 205 } 206 process_media_recorder_call(env, mr->prepare(), "java/io/IOException", "prepare failed."); 207} 208 209static int 210android_media_MediaRecorder_native_getMaxAmplitude(JNIEnv *env, jobject thiz) 211{ 212 LOGV("getMaxAmplitude"); 213 MediaRecorder *mr = (MediaRecorder *)env->GetIntField(thiz, fields.context); 214 int result = 0; 215 process_media_recorder_call(env, mr->getMaxAmplitude(&result), "java/lang/RuntimeException", "getMaxAmplitude failed."); 216 return result; 217} 218 219static void 220android_media_MediaRecorder_start(JNIEnv *env, jobject thiz) 221{ 222 LOGV("start"); 223 MediaRecorder *mr = (MediaRecorder *)env->GetIntField(thiz, fields.context); 224 process_media_recorder_call(env, mr->start(), "java/lang/RuntimeException", "start failed."); 225} 226 227static void 228android_media_MediaRecorder_stop(JNIEnv *env, jobject thiz) 229{ 230 LOGV("stop"); 231 MediaRecorder *mr = (MediaRecorder *)env->GetIntField(thiz, fields.context); 232 process_media_recorder_call(env, mr->stop(), "java/lang/RuntimeException", "stop failed."); 233} 234 235static void 236android_media_MediaRecorder_reset(JNIEnv *env, jobject thiz) 237{ 238 LOGV("reset"); 239 MediaRecorder *mr = (MediaRecorder *)env->GetIntField(thiz, fields.context); 240 process_media_recorder_call(env, mr->reset(), "java/lang/RuntimeException", "reset failed."); 241} 242 243static void 244android_media_MediaRecorder_release(JNIEnv *env, jobject thiz) 245{ 246 LOGV("release"); 247 MediaRecorder *mr = (MediaRecorder *)env->GetIntField(thiz, fields.context); 248 env->SetIntField(thiz, fields.context, 0); 249 delete mr; 250} 251 252static void 253android_media_MediaRecorder_native_setup(JNIEnv *env, jobject thiz) 254{ 255 LOGV("setup"); 256 MediaRecorder *mr = new MediaRecorder(); 257 if (mr->initCheck() == NO_ERROR) { 258 env->SetIntField(thiz, fields.context, (int)mr); 259 } else { 260 delete mr; 261 jniThrowException(env, "java/lang/IOException", "Unable to initialize camera"); 262 } 263} 264 265static void 266android_media_MediaRecorder_native_finalize(JNIEnv *env, jobject thiz) 267{ 268 LOGV("finalize"); 269 MediaRecorder *mr = (MediaRecorder *)env->GetIntField(thiz, fields.context); 270 delete mr; 271} 272 273// ---------------------------------------------------------------------------- 274 275static JNINativeMethod gMethods[] = { 276 {"setCamera", "(Landroid/hardware/Camera;)V",(void *)android_media_MediaRecorder_setCamera}, 277 {"setVideoSource", "(I)V", (void *)android_media_MediaRecorder_setVideoSource}, 278 {"setAudioSource", "(I)V", (void *)android_media_MediaRecorder_setAudioSource}, 279 {"setOutputFormat", "(I)V", (void *)android_media_MediaRecorder_setOutputFormat}, 280 {"setVideoEncoder", "(I)V", (void *)android_media_MediaRecorder_setVideoEncoder}, 281 {"setAudioEncoder", "(I)V", (void *)android_media_MediaRecorder_setAudioEncoder}, 282 {"setOutputFile", "(Ljava/lang/String;)V", (void *)android_media_MediaRecorder_setOutputFile}, 283 {"setVideoSize", "(II)V", (void *)android_media_MediaRecorder_setVideoSize}, 284 {"setVideoFrameRate", "(I)V", (void *)android_media_MediaRecorder_setVideoFrameRate}, 285 {"prepare", "()V", (void *)android_media_MediaRecorder_prepare}, 286 {"getMaxAmplitude", "()I", (void *)android_media_MediaRecorder_native_getMaxAmplitude}, 287 {"start", "()V", (void *)android_media_MediaRecorder_start}, 288 {"stop", "()V", (void *)android_media_MediaRecorder_stop}, 289 {"reset", "()V", (void *)android_media_MediaRecorder_reset}, 290 {"release", "()V", (void *)android_media_MediaRecorder_release}, 291 {"native_setup", "()V", (void *)android_media_MediaRecorder_native_setup}, 292 {"native_finalize", "()V", (void *)android_media_MediaRecorder_native_finalize}, 293}; 294 295static const char* const kClassPathName = "android/media/MediaRecorder"; 296 297int register_android_media_MediaRecorder(JNIEnv *env) 298{ 299 jclass clazz; 300 301 clazz = env->FindClass("android/media/MediaRecorder"); 302 if (clazz == NULL) { 303 LOGE("Can't find android/media/MediaRecorder"); 304 return -1; 305 } 306 307 fields.context = env->GetFieldID(clazz, "mNativeContext", "I"); 308 if (fields.context == NULL) { 309 LOGE("Can't find MediaRecorder.mNativeContext"); 310 return -1; 311 } 312 313 fields.surface = env->GetFieldID(clazz, "mSurface", "Landroid/view/Surface;"); 314 if (fields.surface == NULL) { 315 LOGE("Can't find MediaRecorder.mSurface"); 316 return -1; 317 } 318 319 jclass surface = env->FindClass("android/view/Surface"); 320 if (surface == NULL) { 321 LOGE("Can't find android/view/Surface"); 322 return -1; 323 } 324 325 fields.surface_native = env->GetFieldID(surface, "mSurface", "I"); 326 if (fields.surface_native == NULL) { 327 LOGE("Can't find Surface fields"); 328 return -1; 329 } 330 331 return AndroidRuntime::registerNativeMethods(env, 332 "android/media/MediaRecorder", gMethods, NELEM(gMethods)); 333} 334 335 336