audio.h

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/*
 * Copyright (C) 2013 Glyptodon LLC
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */


#ifndef __GUAC_AUDIO_H
#define __GUAC_AUDIO_H

#include <guacamole/client.h>
#include <guacamole/stream.h>

typedef struct guac_audio_stream guac_audio_stream;

typedef void guac_audio_encoder_begin_handler(guac_audio_stream* audio);

typedef void guac_audio_encoder_end_handler(guac_audio_stream* audio);

typedef void guac_audio_encoder_write_handler(guac_audio_stream* audio,
        const unsigned char* pcm_data, int length);

typedef struct guac_audio_encoder {

    const char* mimetype;

    guac_audio_encoder_begin_handler* begin_handler;

    guac_audio_encoder_write_handler* write_handler;

    guac_audio_encoder_end_handler* end_handler;

} guac_audio_encoder;

struct guac_audio_stream {

    unsigned char* pcm_data;

    int used;

    int length;

    unsigned char* encoded_data;

    int encoded_data_used;

    int encoded_data_length;

    guac_audio_encoder* encoder;

    guac_client* client;

    guac_stream* stream;

    int rate;

    int channels;

    int bps;

    int pcm_bytes_written;

    void* data;

};

guac_audio_stream* guac_audio_stream_alloc(guac_client* client,
        guac_audio_encoder* encoder);

void guac_audio_stream_free(guac_audio_stream* stream);

void guac_audio_stream_begin(guac_audio_stream* stream, int rate, int channels, int bps);

void guac_audio_stream_end(guac_audio_stream* stream);

void guac_audio_stream_write_pcm(guac_audio_stream* stream,
        const unsigned char* data, int length);

void guac_audio_stream_flush(guac_audio_stream* stream);

void guac_audio_stream_write_encoded(guac_audio_stream* audio,
        const unsigned char* data, int length);

#endif