Hugo Hudson | b83ad73 | 2011-07-14 23:31:17 +0100 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) 2011 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 <stdlib.h> |
| 18 | #include <assert.h> |
| 19 | |
| 20 | #include <jni.h> |
| 21 | #include <variablespeed.h> |
| 22 | |
| 23 | // Quick #define to make sure I get all the JNI method calls right. |
| 24 | #define JNI_METHOD(x, y) \ |
| 25 | JNIEXPORT y JNICALL \ |
| 26 | Java_com_android_ex_variablespeed_VariableSpeedNative_##x |
| 27 | |
| 28 | class MethodLog { |
| 29 | public: |
| 30 | explicit MethodLog(const char* name) : name_(name) { |
| 31 | LOGD("+ %s", name); |
| 32 | } |
| 33 | virtual ~MethodLog() { |
| 34 | LOGD("- %s", name_); |
| 35 | } |
| 36 | |
| 37 | private: |
| 38 | const char* name_; |
| 39 | }; |
| 40 | |
| 41 | extern "C" { |
| 42 | JNI_METHOD(playFileDescriptor, void) (JNIEnv*, jclass, int fd, jlong offset, |
| 43 | jlong length) { |
| 44 | MethodLog _("playFileDescriptor"); |
| 45 | AudioEngine::GetEngine()->PlayFileDescriptor(fd, offset, length); |
| 46 | } |
| 47 | |
| 48 | JNI_METHOD(playUri, void) (JNIEnv* env, jclass, jstring uri) { |
| 49 | MethodLog _("playUri"); |
| 50 | const char* utf8 = env->GetStringUTFChars(uri, NULL); |
| 51 | CHECK(NULL != utf8); |
| 52 | AudioEngine::GetEngine()->PlayUri(utf8); |
| 53 | } |
| 54 | |
| 55 | JNI_METHOD(setVariableSpeed, void) (JNIEnv*, jclass, float speed) { |
| 56 | MethodLog _("setVariableSpeed"); |
| 57 | AudioEngine::GetEngine()->SetVariableSpeed(speed); |
| 58 | } |
| 59 | |
| 60 | JNI_METHOD(startPlayback, void) (JNIEnv*, jclass) { |
| 61 | MethodLog _("startPlayback"); |
| 62 | AudioEngine::GetEngine()->RequestStart(); |
| 63 | } |
| 64 | |
| 65 | JNI_METHOD(stopPlayback, void) (JNIEnv*, jclass) { |
| 66 | MethodLog _("stopPlayback"); |
| 67 | AudioEngine::GetEngine()->RequestStop(); |
| 68 | } |
| 69 | |
| 70 | JNI_METHOD(getCurrentPosition, int) (JNIEnv*, jclass) { |
| 71 | MethodLog _("getCurrentPosition"); |
| 72 | return AudioEngine::GetEngine()->GetCurrentPosition(); |
| 73 | } |
| 74 | |
| 75 | JNI_METHOD(getTotalDuration, int) (JNIEnv*, jclass) { |
| 76 | MethodLog _("getTotalDuration"); |
| 77 | return AudioEngine::GetEngine()->GetTotalDuration(); |
| 78 | } |
| 79 | |
| 80 | JNI_METHOD(initializeEngine, void) (JNIEnv*, jclass, int channels, |
| 81 | int sampleRate, int targetFrames, float windowDuration, |
| 82 | float windowOverlapDuration, size_t maxPlayBufferCount, |
| 83 | float initialRate, size_t decodeInitialSize, size_t decodeMaxSize, |
| 84 | size_t startPositionMillis) { |
| 85 | MethodLog _("initializeEngine"); |
| 86 | AudioEngine::SetEngine(new AudioEngine(channels, sampleRate, targetFrames, |
| 87 | windowDuration, windowOverlapDuration, maxPlayBufferCount, initialRate, |
| 88 | decodeInitialSize, decodeMaxSize, startPositionMillis)); |
| 89 | } |
| 90 | |
| 91 | JNI_METHOD(shutdownEngine, void) (JNIEnv*, jclass) { |
| 92 | MethodLog _("shutdownEngine"); |
| 93 | AudioEngine::DeleteEngine(); |
| 94 | } |
| 95 | } // extern "C" |