android_media_MediaCodec.h revision 8034d60f6e044deafe48501dfbfe17c31284bc17 
1/*
2 * Copyright 2012, 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#ifndef _ANDROID_MEDIA_MEDIACODEC_H_
18#define _ANDROID_MEDIA_MEDIACODEC_H_
19
20#include "jni.h"
21
22#include <media/hardware/CryptoAPI.h>
23#include <media/stagefright/foundation/ABase.h>
24#include <media/stagefright/foundation/AHandler.h>
25#include <utils/Errors.h>
26
27namespace android {
28
29struct ABuffer;
30struct ALooper;
31struct AMessage;
32struct AString;
33struct ICrypto;
34struct IGraphicBufferProducer;
35struct MediaCodec;
36struct PersistentSurface;
37class Surface;
38
39struct JMediaCodec : public AHandler {
40    JMediaCodec(
41            JNIEnv *env, jobject thiz,
42            const char *name, bool nameIsType, bool encoder);
43
44    status_t initCheck() const;
45
46    void registerSelf();
47    void release();
48
49    status_t setCallback(jobject cb);
50
51    status_t configure(
52            const sp<AMessage> &format,
53            const sp<IGraphicBufferProducer> &bufferProducer,
54            const sp<ICrypto> &crypto,
55            int flags);
56
57    status_t createInputSurface(sp<IGraphicBufferProducer>* bufferProducer);
58    status_t usePersistentInputSurface(const sp<PersistentSurface> &surface);
59
60    status_t start();
61    status_t stop();
62    status_t reset();
63
64    status_t flush();
65
66    status_t queueInputBuffer(
67            size_t index,
68            size_t offset, size_t size, int64_t timeUs, uint32_t flags,
69            AString *errorDetailMsg);
70
71    status_t queueSecureInputBuffer(
72            size_t index,
73            size_t offset,
74            const CryptoPlugin::SubSample *subSamples,
75            size_t numSubSamples,
76            const uint8_t key[16],
77            const uint8_t iv[16],
78            CryptoPlugin::Mode mode,
79            int64_t presentationTimeUs,
80            uint32_t flags,
81            AString *errorDetailMsg);
82
83    status_t dequeueInputBuffer(size_t *index, int64_t timeoutUs);
84
85    status_t dequeueOutputBuffer(
86            JNIEnv *env, jobject bufferInfo, size_t *index, int64_t timeoutUs);
87
88    status_t releaseOutputBuffer(
89            size_t index, bool render, bool updatePTS, int64_t timestampNs);
90
91    status_t signalEndOfInputStream();
92
93    status_t getFormat(JNIEnv *env, bool input, jobject *format) const;
94
95    status_t getOutputFormat(JNIEnv *env, size_t index, jobject *format) const;
96
97    status_t getBuffers(
98            JNIEnv *env, bool input, jobjectArray *bufArray) const;
99
100    status_t getBuffer(
101            JNIEnv *env, bool input, size_t index, jobject *buf) const;
102
103    status_t getImage(
104            JNIEnv *env, bool input, size_t index, jobject *image) const;
105
106    status_t getName(JNIEnv *env, jstring *name) const;
107
108    status_t setParameters(const sp<AMessage> &params);
109
110    void setVideoScalingMode(int mode);
111
112protected:
113    virtual ~JMediaCodec();
114
115    virtual void onMessageReceived(const sp<AMessage> &msg);
116    void handleCallback(const sp<AMessage> &msg);
117
118private:
119    enum {
120        kWhatCallbackNotify,
121    };
122
123    jclass mClass;
124    jweak mObject;
125    sp<Surface> mSurfaceTextureClient;
126
127    // java objects cached
128    jclass mByteBufferClass;
129    jobject mNativeByteOrderObj;
130    jmethodID mByteBufferOrderMethodID;
131    jmethodID mByteBufferPositionMethodID;
132    jmethodID mByteBufferLimitMethodID;
133    jmethodID mByteBufferAsReadOnlyBufferMethodID;
134
135    sp<ALooper> mLooper;
136    sp<MediaCodec> mCodec;
137
138    sp<AMessage> mCallbackNotification;
139
140    status_t mInitStatus;
141
142    status_t createByteBufferFromABuffer(
143            JNIEnv *env, bool readOnly, bool clearBuffer, const sp<ABuffer> &buffer,
144            jobject *buf) const;
145
146    void cacheJavaObjects(JNIEnv *env);
147    void deleteJavaObjects(JNIEnv *env);
148
149    DISALLOW_EVIL_CONSTRUCTORS(JMediaCodec);
150};
151
152}  // namespace android
153
154#endif  // _ANDROID_MEDIA_MEDIACODEC_H_
155