/*
 * Copyright (c) 2012, The Linux Foundation. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 *       copyright notice, this list of conditions and the following
 *       disclaimer in the documentation and/or other materials provided
 *       with the distribution.
 *     * Neither the name of The Linux Foundation nor the names of its
 *       contributors may be used to endorse or promote products derived
 *       from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef WAVE_WRITER_H_

#define WAVE_WRITER_H_

#include <stdio.h>

#include <media/stagefright/MediaWriter.h>
#include <utils/threads.h>

namespace android {


#define ID_RIFF 0x46464952
#define ID_WAVE 0x45564157
#define ID_FMT  0x20746d66
#define ID_DATA 0x61746164
#define FORMAT_PCM 1


struct MediaSource;
struct MetaData;

struct wav_header {
    uint32_t riff_id;
    uint32_t riff_sz;
    uint32_t riff_fmt;
    uint32_t fmt_id;
    uint32_t fmt_sz;
    uint16_t audio_format;
    uint16_t num_channels;
    uint32_t sample_rate;
    uint32_t byte_rate;       /* sample_rate * num_channels * bps / 8 */
    uint16_t block_align;     /* num_channels * bps / 8 */
    uint16_t bits_per_sample;
    uint32_t data_id;
    uint32_t data_sz;
};


struct WAVEWriter : public MediaWriter {
    WAVEWriter(const char *filename);
    WAVEWriter(int fd);

    status_t initCheck() const;

    virtual status_t addSource(const sp<MediaSource> &source);
    virtual bool reachedEOS();
    virtual status_t start(MetaData *params = NULL);
    virtual status_t stop();
    virtual status_t pause();

protected:
    virtual ~WAVEWriter();

private:
    int   mFd;
    status_t mInitCheck;
    sp<MediaSource> mSource;
    bool mStarted;
    volatile bool mPaused;
    volatile bool mResumed;
    volatile bool mDone;
    volatile bool mReachedEOS;
    pthread_t mThread;
    int64_t mEstimatedSizeBytes;
    int64_t mEstimatedDurationUs;

    static void *ThreadWrapper(void *);
    status_t threadFunc();
    bool exceedsFileSizeLimit();
    bool exceedsFileDurationLimit();

    WAVEWriter(const WAVEWriter &);
    WAVEWriter &operator=(const WAVEWriter &);
};

}  // namespace android

#endif  // WAVE_WRITER_H_