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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/foundation/AudioPresentationInfo.h>
     22 #include <media/MediaSource.h>
     23 #include <media/DataSource.h>
     24 #include <utils/Errors.h>
     25 #include <utils/KeyedVector.h>
     26 #include <utils/RefBase.h>
     27 #include <utils/String8.h>
     28 
     29 #include "jni.h"
     30 
     31 namespace android {
     32 
     33 struct IMediaHTTPService;
     34 class MetaData;
     35 struct NuMediaExtractor;
     36 
     37 struct JMediaExtractor : public RefBase {
     38     JMediaExtractor(JNIEnv *env, jobject thiz);
     39 
     40     status_t setDataSource(
     41             const sp<IMediaHTTPService> &httpService,
     42             const char *path,
     43             const KeyedVector<String8, String8> *headers);
     44 
     45     status_t setDataSource(int fd, off64_t offset, off64_t size);
     46     status_t setDataSource(const sp<DataSource> &source);
     47 
     48     status_t setMediaCas(JNIEnv *env, jobject casBinderObj);
     49 
     50     size_t countTracks() const;
     51     status_t getTrackFormat(size_t index, jobject *format) const;
     52 
     53     status_t getFileFormat(jobject *format) const;
     54 
     55     status_t selectTrack(size_t index);
     56     status_t unselectTrack(size_t index);
     57 
     58     status_t seekTo(int64_t timeUs, MediaSource::ReadOptions::SeekMode mode);
     59 
     60     status_t advance();
     61     status_t readSampleData(jobject byteBuf, size_t offset, size_t *sampleSize);
     62     status_t getSampleTrackIndex(size_t *trackIndex);
     63     status_t getSampleTime(int64_t *sampleTimeUs);
     64     status_t getSampleSize(size_t *sampleSize);
     65     status_t getSampleFlags(uint32_t *sampleFlags);
     66     status_t getSampleMeta(sp<MetaData> *sampleMeta);
     67     status_t getMetrics(Parcel *reply) const;
     68 
     69     bool getCachedDuration(int64_t *durationUs, bool *eos) const;
     70     status_t getAudioPresentations(size_t trackIdx,
     71             AudioPresentationCollection *presentations) const;
     72 
     73 protected:
     74     virtual ~JMediaExtractor();
     75 
     76 private:
     77     jclass mClass;
     78     jweak mObject;
     79     sp<NuMediaExtractor> mImpl;
     80 
     81     DISALLOW_EVIL_CONSTRUCTORS(JMediaExtractor);
     82 };
     83 
     84 }  // namespace android
     85 
     86 #endif  // _ANDROID_MEDIA_MEDIAEXTRACTOR_H_
     87