media/libstagefright/codecs/vorbis/dec/SoftVorbis.h

/*
 * Copyright (C) 2011 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 SOFT_VORBIS_H_

#define SOFT_VORBIS_H_

#include "SimpleSoftOMXComponent.h"

struct vorbis_dsp_state;
struct vorbis_info;

namespace android {

struct SoftVorbis : public SimpleSoftOMXComponent {
    SoftVorbis(const char *name,
            const OMX_CALLBACKTYPE *callbacks,
            OMX_PTR appData,
            OMX_COMPONENTTYPE **component);

protected:
    virtual ~SoftVorbis();

    virtual OMX_ERRORTYPE internalGetParameter(
            OMX_INDEXTYPE index, OMX_PTR params);

    virtual OMX_ERRORTYPE internalSetParameter(
            OMX_INDEXTYPE index, const OMX_PTR params);

    virtual void onQueueFilled(OMX_U32 portIndex);
    virtual void onPortFlushCompleted(OMX_U32 portIndex);
    virtual void onPortEnableCompleted(OMX_U32 portIndex, bool enabled);
    virtual void onReset();

private:
    enum {
        kNumBuffers = 4,
        kMaxNumSamplesPerBuffer = 8192 * 2
    };

    size_t mInputBufferCount;

    vorbis_dsp_state *mState;
    vorbis_info *mVi;

    int64_t mAnchorTimeUs;
    int64_t mNumFramesOutput;
    int32_t mNumFramesLeftOnPage;
    bool mSawInputEos;
    bool mSignalledOutputEos;

    enum {
        NONE,
        AWAITING_DISABLED,
        AWAITING_ENABLED
    } mOutputPortSettingsChange;

    void initPorts();
    status_t initDecoder();
    bool isConfigured() const;

    DISALLOW_EVIL_CONSTRUCTORS(SoftVorbis);
};

}  // namespace android

#endif  // SOFT_VORBIS_H_