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/*
* Copyright (C) 2014 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
* This file defines an NDK API.
* Do not remove methods.
* Do not change method signatures.
* Do not change the value of constants.
* Do not change the size of any of the classes defined in here.
* Do not reference types that are not part of the NDK.
* Do not #include files that aren't part of the NDK.
*/
#ifndef _NDK_MEDIA_EXTRACTOR_H
#define _NDK_MEDIA_EXTRACTOR_H
#include <sys/types.h>
#include "NdkMediaFormat.h"
#ifdef __cplusplus
extern "C" {
#endif
struct AMediaExtractor;
typedef struct AMediaExtractor AMediaExtractor;
/**
* Create new media extractor
*/
AMediaExtractor* AMediaExtractor_new();
/**
* Delete a previously created media extractor
*/
int AMediaExtractor_delete(AMediaExtractor*);
/**
* Set the file descriptor from which the extractor will read.
*/
int AMediaExtractor_setDataSourceFd(AMediaExtractor*, int fd, off64_t offset, off64_t length);
/**
* Set the URI from which the extractor will read.
*/
int AMediaExtractor_setDataSource(AMediaExtractor*, const char *location); // TODO support headers
/**
* Return the number of tracks in the previously specified media file
*/
int AMediaExtractor_getTrackCount(AMediaExtractor*);
/**
* Return the format of the specified track. The caller must free the returned format
*/
AMediaFormat* AMediaExtractor_getTrackFormat(AMediaExtractor*, size_t idx);
/**
* Select the specified track. Subsequent calls to readSampleData, getSampleTrackIndex and
* getSampleTime only retrieve information for the subset of tracks selected.
* Selecting the same track multiple times has no effect, the track is
* only selected once.
*/
int AMediaExtractor_selectTrack(AMediaExtractor*, size_t idx);
/**
* Unselect the specified track. Subsequent calls to readSampleData, getSampleTrackIndex and
* getSampleTime only retrieve information for the subset of tracks selected..
*/
int AMediaExtractor_unselectTrack(AMediaExtractor*, size_t idx);
/**
* Read the current sample.
*/
int AMediaExtractor_readSampleData(AMediaExtractor*, uint8_t *buffer, size_t capacity);
/**
* Read the current sample's flags.
*/
int AMediaExtractor_getSampleFlags(AMediaExtractor*); // see definitions below
/**
* Returns the track index the current sample originates from (or -1
* if no more samples are available)
*/
int AMediaExtractor_getSampleTrackIndex(AMediaExtractor*);
/**
* Returns the current sample's presentation time in microseconds.
* or -1 if no more samples are available.
*/
int64_t AMediaExtractor_getSampletime(AMediaExtractor*);
/**
* Advance to the next sample. Returns false if no more sample data
* is available (end of stream).
*/
bool AMediaExtractor_advance(AMediaExtractor*);
enum {
AMEDIAEXTRACTOR_SAMPLE_FLAG_SYNC = 1,
AMEDIAEXTRACTOR_SAMPLE_FLAG_ENCRYPTED = 2,
};
#ifdef __cplusplus
} // extern "C"
#endif
#endif // _NDK_MEDIA_EXTRACTOR_H
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