/*
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* Copyright (C) 2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/*
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* This file defines an NDK API.
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* Do not remove methods.
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* Do not change method signatures.
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* Do not change the value of constants.
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* Do not change the size of any of the classes defined in here.
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* Do not reference types that are not part of the NDK.
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* Do not #include files that aren't part of the NDK.
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*/
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#ifndef _NDK_MEDIA_EXTRACTOR_H
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#define _NDK_MEDIA_EXTRACTOR_H
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#include <sys/types.h>
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#include "NdkMediaCodec.h"
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#include "NdkMediaFormat.h"
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#include "NdkMediaCrypto.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct AMediaExtractor;
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typedef struct AMediaExtractor AMediaExtractor;
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/**
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* Create new media extractor
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*/
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AMediaExtractor* AMediaExtractor_new();
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/**
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* Delete a previously created media extractor
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*/
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media_status_t AMediaExtractor_delete(AMediaExtractor*);
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/**
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* Set the file descriptor from which the extractor will read.
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*/
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media_status_t AMediaExtractor_setDataSourceFd(AMediaExtractor*, int fd, off64_t offset, off64_t length);
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/**
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* Set the URI from which the extractor will read.
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*/
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media_status_t AMediaExtractor_setDataSource(AMediaExtractor*, const char *location); // TODO support headers
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/**
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* Return the number of tracks in the previously specified media file
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*/
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size_t AMediaExtractor_getTrackCount(AMediaExtractor*);
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/**
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* Return the format of the specified track. The caller must free the returned format
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*/
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AMediaFormat* AMediaExtractor_getTrackFormat(AMediaExtractor*, size_t idx);
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/**
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* Select the specified track. Subsequent calls to readSampleData, getSampleTrackIndex and
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* getSampleTime only retrieve information for the subset of tracks selected.
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* Selecting the same track multiple times has no effect, the track is
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* only selected once.
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*/
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media_status_t AMediaExtractor_selectTrack(AMediaExtractor*, size_t idx);
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/**
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* Unselect the specified track. Subsequent calls to readSampleData, getSampleTrackIndex and
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* getSampleTime only retrieve information for the subset of tracks selected..
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*/
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media_status_t AMediaExtractor_unselectTrack(AMediaExtractor*, size_t idx);
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/**
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* Read the current sample.
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*/
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ssize_t AMediaExtractor_readSampleData(AMediaExtractor*, uint8_t *buffer, size_t capacity);
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/**
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* Read the current sample's flags.
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*/
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uint32_t AMediaExtractor_getSampleFlags(AMediaExtractor*); // see definitions below
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/**
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* Returns the track index the current sample originates from (or -1
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* if no more samples are available)
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*/
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int AMediaExtractor_getSampleTrackIndex(AMediaExtractor*);
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/**
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* Returns the current sample's presentation time in microseconds.
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* or -1 if no more samples are available.
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*/
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int64_t AMediaExtractor_getSampleTime(AMediaExtractor*);
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/**
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* Advance to the next sample. Returns false if no more sample data
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* is available (end of stream).
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*/
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bool AMediaExtractor_advance(AMediaExtractor*);
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typedef enum {
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AMEDIAEXTRACTOR_SEEK_PREVIOUS_SYNC,
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AMEDIAEXTRACTOR_SEEK_NEXT_SYNC,
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AMEDIAEXTRACTOR_SEEK_CLOSEST_SYNC
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} SeekMode;
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/**
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*
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*/
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media_status_t AMediaExtractor_seekTo(AMediaExtractor*, int64_t seekPosUs, SeekMode mode);
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/**
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* mapping of crypto scheme uuid to the scheme specific data for that scheme
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*/
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typedef struct PsshEntry {
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AMediaUUID uuid;
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size_t datalen;
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void *data;
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} PsshEntry;
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/**
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* list of crypto schemes and their data
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*/
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typedef struct PsshInfo {
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size_t numentries;
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PsshEntry entries[0];
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} PsshInfo;
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/**
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* Get the PSSH info if present.
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*/
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PsshInfo* AMediaExtractor_getPsshInfo(AMediaExtractor*);
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AMediaCodecCryptoInfo *AMediaExtractor_getSampleCryptoInfo(AMediaExtractor *);
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enum {
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AMEDIAEXTRACTOR_SAMPLE_FLAG_SYNC = 1,
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AMEDIAEXTRACTOR_SAMPLE_FLAG_ENCRYPTED = 2,
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};
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif // _NDK_MEDIA_EXTRACTOR_H
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