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      1 /* libFLAC - Free Lossless Audio Codec
      2  * Copyright (C) 2002-2009  Josh Coalson
      3  * Copyright (C) 2011-2014  Xiph.Org Foundation
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  *
      9  * - Redistributions of source code must retain the above copyright
     10  * notice, this list of conditions and the following disclaimer.
     11  *
     12  * - Redistributions in binary form must reproduce the above copyright
     13  * notice, this list of conditions and the following disclaimer in the
     14  * documentation and/or other materials provided with the distribution.
     15  *
     16  * - Neither the name of the Xiph.org Foundation nor the names of its
     17  * contributors may be used to endorse or promote products derived from
     18  * this software without specific prior written permission.
     19  *
     20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     21  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     22  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     23  * A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
     24  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     25  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     26  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     27  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
     28  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
     29  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
     30  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     31  */
     32 
     33 #ifndef FLAC__PRIVATE__OGG_DECODER_ASPECT_H
     34 #define FLAC__PRIVATE__OGG_DECODER_ASPECT_H
     35 
     36 #include <ogg/ogg.h>
     37 
     38 #include "FLAC/ordinals.h"
     39 #include "FLAC/stream_decoder.h" /* for FLAC__StreamDecoderReadStatus */
     40 
     41 typedef struct FLAC__OggDecoderAspect {
     42 	/* these are storage for values that can be set through the API */
     43 	FLAC__bool use_first_serial_number;
     44 	long serial_number;
     45 
     46 	/* these are for internal state related to Ogg decoding */
     47 	ogg_stream_state stream_state;
     48 	ogg_sync_state sync_state;
     49 	unsigned version_major, version_minor;
     50 	FLAC__bool need_serial_number;
     51 	FLAC__bool end_of_stream;
     52 	FLAC__bool have_working_page; /* only if true will the following vars be valid */
     53 	ogg_page working_page;
     54 	FLAC__bool have_working_packet; /* only if true will the following vars be valid */
     55 	ogg_packet working_packet; /* as we work through the packet we will move working_packet.packet forward and working_packet.bytes down */
     56 } FLAC__OggDecoderAspect;
     57 
     58 void FLAC__ogg_decoder_aspect_set_serial_number(FLAC__OggDecoderAspect *aspect, long value);
     59 void FLAC__ogg_decoder_aspect_set_defaults(FLAC__OggDecoderAspect *aspect);
     60 FLAC__bool FLAC__ogg_decoder_aspect_init(FLAC__OggDecoderAspect *aspect);
     61 void FLAC__ogg_decoder_aspect_finish(FLAC__OggDecoderAspect *aspect);
     62 void FLAC__ogg_decoder_aspect_flush(FLAC__OggDecoderAspect *aspect);
     63 void FLAC__ogg_decoder_aspect_reset(FLAC__OggDecoderAspect *aspect);
     64 
     65 typedef enum {
     66 	FLAC__OGG_DECODER_ASPECT_READ_STATUS_OK = 0,
     67 	FLAC__OGG_DECODER_ASPECT_READ_STATUS_END_OF_STREAM,
     68 	FLAC__OGG_DECODER_ASPECT_READ_STATUS_LOST_SYNC,
     69 	FLAC__OGG_DECODER_ASPECT_READ_STATUS_NOT_FLAC,
     70 	FLAC__OGG_DECODER_ASPECT_READ_STATUS_UNSUPPORTED_MAPPING_VERSION,
     71 	FLAC__OGG_DECODER_ASPECT_READ_STATUS_ABORT,
     72 	FLAC__OGG_DECODER_ASPECT_READ_STATUS_ERROR,
     73 	FLAC__OGG_DECODER_ASPECT_READ_STATUS_MEMORY_ALLOCATION_ERROR
     74 } FLAC__OggDecoderAspectReadStatus;
     75 
     76 typedef FLAC__OggDecoderAspectReadStatus (*FLAC__OggDecoderAspectReadCallbackProxy)(const void *decoder, FLAC__byte buffer[], size_t *bytes, void *client_data);
     77 
     78 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);
     79 
     80 #endif
     81