1 /* libFLAC - Free Lossless Audio Codec 2 * Copyright (C) 2002,2003,2004,2005,2006,2007 Josh Coalson 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * - Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 11 * - Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * - Neither the name of the Xiph.org Foundation nor the names of its 16 * contributors may be used to endorse or promote products derived from 17 * this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR 23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 26 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 27 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 28 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 29 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #ifndef FLAC__PRIVATE__OGG_DECODER_ASPECT_H 33 #define FLAC__PRIVATE__OGG_DECODER_ASPECT_H 34 35 #include <ogg/ogg.h> 36 37 #include "FLAC/ordinals.h" 38 #include "FLAC/stream_decoder.h" /* for FLAC__StreamDecoderReadStatus */ 39 40 typedef struct FLAC__OggDecoderAspect { 41 /* these are storage for values that can be set through the API */ 42 FLAC__bool use_first_serial_number; 43 long serial_number; 44 45 /* these are for internal state related to Ogg decoding */ 46 ogg_stream_state stream_state; 47 ogg_sync_state sync_state; 48 unsigned version_major, version_minor; 49 FLAC__bool need_serial_number; 50 FLAC__bool end_of_stream; 51 FLAC__bool have_working_page; /* only if true will the following vars be valid */ 52 ogg_page working_page; 53 FLAC__bool have_working_packet; /* only if true will the following vars be valid */ 54 ogg_packet working_packet; /* as we work through the packet we will move working_packet.packet forward and working_packet.bytes down */ 55 } FLAC__OggDecoderAspect; 56 57 void FLAC__ogg_decoder_aspect_set_serial_number(FLAC__OggDecoderAspect *aspect, long value); 58 void FLAC__ogg_decoder_aspect_set_defaults(FLAC__OggDecoderAspect *aspect); 59 FLAC__bool FLAC__ogg_decoder_aspect_init(FLAC__OggDecoderAspect *aspect); 60 void FLAC__ogg_decoder_aspect_finish(FLAC__OggDecoderAspect *aspect); 61 void FLAC__ogg_decoder_aspect_flush(FLAC__OggDecoderAspect *aspect); 62 void FLAC__ogg_decoder_aspect_reset(FLAC__OggDecoderAspect *aspect); 63 64 typedef enum { 65 FLAC__OGG_DECODER_ASPECT_READ_STATUS_OK = 0, 66 FLAC__OGG_DECODER_ASPECT_READ_STATUS_END_OF_STREAM, 67 FLAC__OGG_DECODER_ASPECT_READ_STATUS_LOST_SYNC, 68 FLAC__OGG_DECODER_ASPECT_READ_STATUS_NOT_FLAC, 69 FLAC__OGG_DECODER_ASPECT_READ_STATUS_UNSUPPORTED_MAPPING_VERSION, 70 FLAC__OGG_DECODER_ASPECT_READ_STATUS_ABORT, 71 FLAC__OGG_DECODER_ASPECT_READ_STATUS_ERROR, 72 FLAC__OGG_DECODER_ASPECT_READ_STATUS_MEMORY_ALLOCATION_ERROR 73 } FLAC__OggDecoderAspectReadStatus; 74 75 typedef FLAC__OggDecoderAspectReadStatus (*FLAC__OggDecoderAspectReadCallbackProxy)(const void *decoder, FLAC__byte buffer[], size_t *bytes, void *client_data); 76 77 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); 78 79 #endif 80