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      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_MEDIAEXTRACTOR_H_
     18 #define _ANDROID_MEDIA_MEDIAEXTRACTOR_H_
     19 
     20 #include <media/stagefright/foundation/ABase.h>
     21 #include <media/stagefright/MediaSource.h>
     22 #include <media/stagefright/DataSource.h>
     23 #include <utils/Errors.h>
     24 #include <utils/KeyedVector.h>
     25 #include <utils/RefBase.h>
     26 #include <utils/String8.h>
     27 
     28 #include "jni.h"
     29 
     30 namespace android {
     31 
     32 struct IMediaHTTPService;
     33 struct MetaData;
     34 struct NuMediaExtractor;
     35 
     36 struct JMediaExtractor : public RefBase {
     37     JMediaExtractor(JNIEnv *env, jobject thiz);
     38 
     39     status_t setDataSource(
     40             const sp<IMediaHTTPService> &httpService,
     41             const char *path,
     42             const KeyedVector<String8, String8> *headers);
     43 
     44     status_t setDataSource(int fd, off64_t offset, off64_t size);
     45     status_t setDataSource(const sp<DataSource> &source);
     46 
     47     size_t countTracks() const;
     48     status_t getTrackFormat(size_t index, jobject *format) const;
     49 
     50     status_t getFileFormat(jobject *format) const;
     51 
     52     status_t selectTrack(size_t index);
     53     status_t unselectTrack(size_t index);
     54 
     55     status_t seekTo(int64_t timeUs, MediaSource::ReadOptions::SeekMode mode);
     56 
     57     status_t advance();
     58     status_t readSampleData(jobject byteBuf, size_t offset, size_t *sampleSize);
     59     status_t getSampleTrackIndex(size_t *trackIndex);
     60     status_t getSampleTime(int64_t *sampleTimeUs);
     61     status_t getSampleFlags(uint32_t *sampleFlags);
     62     status_t getSampleMeta(sp<MetaData> *sampleMeta);
     63 
     64     bool getCachedDuration(int64_t *durationUs, bool *eos) const;
     65 
     66 protected:
     67     virtual ~JMediaExtractor();
     68 
     69 private:
     70     jclass mClass;
     71     jweak mObject;
     72     sp<NuMediaExtractor> mImpl;
     73 
     74     DISALLOW_EVIL_CONSTRUCTORS(JMediaExtractor);
     75 };
     76 
     77 }  // namespace android
     78 
     79 #endif  // _ANDROID_MEDIA_MEDIAEXTRACTOR_H_
     80