88 lines
3.7 KiB
C
88 lines
3.7 KiB
C
/* libFLAC - Free Lossless Audio Coder library
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* Copyright (C) 2000,2001 Josh Coalson
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef FLAC__STREAM_DECODER_H
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#define FLAC__STREAM_DECODER_H
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#include "format.h"
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typedef enum {
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FLAC__STREAM_DECODER_SEARCH_FOR_METADATA = 0,
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FLAC__STREAM_DECODER_READ_METADATA,
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FLAC__STREAM_DECODER_SEARCH_FOR_FRAME_SYNC,
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FLAC__STREAM_DECODER_READ_FRAME,
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FLAC__STREAM_DECODER_RESYNC_IN_HEADER,
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FLAC__STREAM_DECODER_END_OF_STREAM,
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FLAC__STREAM_DECODER_ABORTED,
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FLAC__STREAM_DECODER_UNPARSEABLE_STREAM,
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FLAC__STREAM_DECODER_MEMORY_ALLOCATION_ERROR,
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FLAC__STREAM_DECODER_UNINITIALIZED
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} FLAC__StreamDecoderState;
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extern const char *FLAC__StreamDecoderStateString[];
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typedef enum {
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FLAC__STREAM_DECODER_READ_CONTINUE,
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FLAC__STREAM_DECODER_READ_END_OF_STREAM,
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FLAC__STREAM_DECODER_READ_ABORT
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} FLAC__StreamDecoderReadStatus;
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extern const char *FLAC__StreamDecoderReadStatusString[];
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typedef enum {
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FLAC__STREAM_DECODER_WRITE_CONTINUE,
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FLAC__STREAM_DECODER_WRITE_ABORT
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} FLAC__StreamDecoderWriteStatus;
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extern const char *FLAC__StreamDecoderWriteStatusString[];
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typedef enum {
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FLAC__STREAM_DECODER_ERROR_LOST_SYNC
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} FLAC__StreamDecoderErrorStatus;
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extern const char *FLAC__StreamDecoderErrorStatusString[];
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struct FLAC__StreamDecoderPrivate;
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typedef struct {
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/* these fields are read-only and valid as of the last write_callback() */
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unsigned channels;
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FLAC__ChannelAssignment channel_assignment;
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unsigned bits_per_sample;
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unsigned sample_rate; /* in Hz */
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unsigned blocksize; /* in samples (per channel) */
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FLAC__StreamDecoderState state; /* must be FLAC__STREAM_DECODER_UNINITIALIZED when passed to FLAC__stream_decoder_init() */
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struct FLAC__StreamDecoderPrivate *guts; /* must be 0 when passed to FLAC__stream_decoder_init() */
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} FLAC__StreamDecoder;
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FLAC__StreamDecoder *FLAC__stream_decoder_get_new_instance();
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void FLAC__stream_decoder_free_instance(FLAC__StreamDecoder *decoder);
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FLAC__StreamDecoderState FLAC__stream_decoder_init(
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FLAC__StreamDecoder *decoder,
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FLAC__StreamDecoderReadStatus (*read_callback)(const FLAC__StreamDecoder *decoder, byte buffer[], unsigned *bytes, void *client_data),
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FLAC__StreamDecoderWriteStatus (*write_callback)(const FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const int32 *buffer[], void *client_data),
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void (*metadata_callback)(const FLAC__StreamDecoder *decoder, const FLAC__StreamMetaData *metadata, void *client_data),
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void (*error_callback)(const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data),
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void *client_data
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);
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void FLAC__stream_decoder_finish(FLAC__StreamDecoder *decoder);
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bool FLAC__stream_decoder_flush(FLAC__StreamDecoder *decoder);
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bool FLAC__stream_decoder_reset(FLAC__StreamDecoder *decoder);
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bool FLAC__stream_decoder_process_whole_stream(FLAC__StreamDecoder *decoder);
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bool FLAC__stream_decoder_process_metadata(FLAC__StreamDecoder *decoder);
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bool FLAC__stream_decoder_process_one_frame(FLAC__StreamDecoder *decoder);
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bool FLAC__stream_decoder_process_remaining_frames(FLAC__StreamDecoder *decoder);
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#endif
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