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/*
* Copyright (C) 2010 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.
*/
#ifndef VORBIS_DECODER_H_
#define VORBIS_DECODER_H_
#include <media/stagefright/MediaSource.h>
struct vorbis_dsp_state;
struct vorbis_info;
namespace android {
struct MediaBufferGroup;
struct VorbisDecoder : public MediaSource {
VorbisDecoder(const sp<MediaSource> &source);
virtual status_t start(MetaData *params);
virtual status_t stop();
virtual sp<MetaData> getFormat();
virtual status_t read(
MediaBuffer **buffer, const ReadOptions *options);
protected:
virtual ~VorbisDecoder();
private:
enum {
kMaxNumSamplesPerBuffer = 8192 * 2
};
sp<MediaSource> mSource;
bool mStarted;
MediaBufferGroup *mBufferGroup;
int32_t mNumChannels;
int32_t mSampleRate;
int64_t mAnchorTimeUs;
int64_t mNumFramesOutput;
int32_t mNumFramesLeftOnPage;
vorbis_dsp_state *mState;
vorbis_info *mVi;
int decodePacket(MediaBuffer *packet, MediaBuffer *out);
VorbisDecoder(const VorbisDecoder &);
VorbisDecoder &operator=(const VorbisDecoder &);
};
} // namespace android
#endif // VORBIS_DECODER_H_
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