libFLAC/include/private/ogg_decoder_aspect.h

/* libFLAC - Free Lossless Audio Codec
 * Copyright (C) 2002-2009  Josh Coalson
 * Copyright (C) 2011-2016  Xiph.Org Foundation
 *
 * 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 Xiph.org 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 BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION 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
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 */

#ifndef FLAC__PRIVATE__OGG_DECODER_ASPECT_H
#define FLAC__PRIVATE__OGG_DECODER_ASPECT_H

#include <ogg/ogg.h>

#include "FLAC/ordinals.h"
#include "FLAC/stream_decoder.h" /* for FLAC__StreamDecoderReadStatus */

typedef struct FLAC__OggDecoderAspect {
	/* these are storage for values that can be set through the API */
	FLAC__bool use_first_serial_number;
	long serial_number;

	/* these are for internal state related to Ogg decoding */
	ogg_stream_state stream_state;
	ogg_sync_state sync_state;
	unsigned version_major, version_minor;
	FLAC__bool need_serial_number;
	FLAC__bool end_of_stream;
	FLAC__bool have_working_page; /* only if true will the following vars be valid */
	ogg_page working_page;
	FLAC__bool have_working_packet; /* only if true will the following vars be valid */
	ogg_packet working_packet; /* as we work through the packet we will move working_packet.packet forward and working_packet.bytes down */
} FLAC__OggDecoderAspect;

void FLAC__ogg_decoder_aspect_set_serial_number(FLAC__OggDecoderAspect *aspect, long value);
void FLAC__ogg_decoder_aspect_set_defaults(FLAC__OggDecoderAspect *aspect);
FLAC__bool FLAC__ogg_decoder_aspect_init(FLAC__OggDecoderAspect *aspect);
void FLAC__ogg_decoder_aspect_finish(FLAC__OggDecoderAspect *aspect);
void FLAC__ogg_decoder_aspect_flush(FLAC__OggDecoderAspect *aspect);
void FLAC__ogg_decoder_aspect_reset(FLAC__OggDecoderAspect *aspect);

typedef enum {
	FLAC__OGG_DECODER_ASPECT_READ_STATUS_OK = 0,
	FLAC__OGG_DECODER_ASPECT_READ_STATUS_END_OF_STREAM,
	FLAC__OGG_DECODER_ASPECT_READ_STATUS_LOST_SYNC,
	FLAC__OGG_DECODER_ASPECT_READ_STATUS_NOT_FLAC,
	FLAC__OGG_DECODER_ASPECT_READ_STATUS_UNSUPPORTED_MAPPING_VERSION,
	FLAC__OGG_DECODER_ASPECT_READ_STATUS_ABORT,
	FLAC__OGG_DECODER_ASPECT_READ_STATUS_ERROR,
	FLAC__OGG_DECODER_ASPECT_READ_STATUS_MEMORY_ALLOCATION_ERROR
} FLAC__OggDecoderAspectReadStatus;

typedef FLAC__OggDecoderAspectReadStatus (*FLAC__OggDecoderAspectReadCallbackProxy)(const void *decoder, FLAC__byte buffer[], size_t *bytes, void *client_data);

FLAC__OggDecoderAspectReadStatus FLAC__ogg_decoder_aspect_read_callback_wrapper(FLAC__OggDecoderAspect *aspect, FLAC__byte buffer[], size_t *bytes, FLAC__OggDecoderAspectReadCallbackProxy read_callback, const FLAC__StreamDecoder *decoder, void *client_data);

#endif