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| 4680 | right-hear | 1 | /* libFLAC - Free Lossless Audio Codec library |
| 2 | * Copyright (C) 2000,2001 Josh Coalson |
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| 3 | * |
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| 4 | * This library is free software; you can redistribute it and/or |
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| 5 | * modify it under the terms of the GNU Library General Public |
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| 6 | * License as published by the Free Software Foundation; either |
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| 7 | * version 2 of the License, or (at your option) any later version. |
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| 8 | * |
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| 9 | * This library is distributed in the hope that it will be useful, |
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| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 12 | * Library General Public License for more details. |
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| 13 | * |
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| 14 | * You should have received a copy of the GNU Library General Public |
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| 15 | * License along with this library; if not, write to the |
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| 16 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
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| 17 | * Boston, MA 02111-1307, USA. |
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| 18 | */ |
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| 19 | |||
| 20 | #ifndef FLAC__FILE_DECODER_H |
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| 21 | #define FLAC__FILE_DECODER_H |
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| 22 | |||
| 23 | #include "stream_decoder.h" |
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| 24 | |||
| 25 | typedef enum { |
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| 26 | FLAC__FILE_DECODER_OK = 0, |
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| 27 | FLAC__FILE_DECODER_SEEKING, |
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| 28 | FLAC__FILE_DECODER_END_OF_FILE, |
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| 29 | FLAC__FILE_DECODER_ERROR_OPENING_FILE, |
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| 30 | FLAC__FILE_DECODER_MEMORY_ALLOCATION_ERROR, |
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| 31 | FLAC__FILE_DECODER_SEEK_ERROR, |
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| 32 | FLAC__FILE_DECODER_STREAM_ERROR, |
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| 33 | FLAC__FILE_DECODER_MD5_ERROR, |
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| 34 | FLAC__FILE_DECODER_STREAM_DECODER_ERROR, |
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| 35 | FLAC__FILE_DECODER_ALREADY_INITIALIZED, |
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| 36 | FLAC__FILE_DECODER_INVALID_CALLBACK, |
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| 37 | FLAC__FILE_DECODER_UNINITIALIZED |
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| 38 | } FLAC__FileDecoderState; |
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| 39 | extern const char *FLAC__FileDecoderStateString[]; |
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| 40 | |||
| 41 | /*********************************************************************** |
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| 42 | * |
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| 43 | * class FLAC__FileDecoder : public FLAC__StreamDecoder |
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| 44 | * |
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| 45 | ***********************************************************************/ |
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| 46 | |||
| 47 | struct FLAC__FileDecoderProtected; |
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| 48 | struct FLAC__FileDecoderPrivate; |
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| 49 | typedef struct { |
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| 50 | struct FLAC__FileDecoderProtected *protected; |
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| 51 | struct FLAC__FileDecoderPrivate *private; |
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| 52 | } FLAC__FileDecoder; |
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| 53 | |||
| 54 | /*********************************************************************** |
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| 55 | * |
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| 56 | * Class constructor/destructor |
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| 57 | * |
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| 58 | ***********************************************************************/ |
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| 59 | |||
| 60 | /* |
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| 61 | * Any parameters that are not set before FLAC__file_decoder_init() |
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| 62 | * will take on the defaults from the constructor, shown below. |
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| 63 | * For more on what the parameters mean, see the documentation. |
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| 64 | * |
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| 65 | * FLAC__bool md5_checking (DEFAULT: false) MD5 checking will be turned off if a seek is requested |
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| 66 | * (*write_callback)() (DEFAULT: NULL ) The callbacks are the only values that MUST be set before FLAC__file_decoder_init() |
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| 67 | * (*metadata_callback)() (DEFAULT: NULL ) |
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| 68 | * (*error_callback)() (DEFAULT: NULL ) |
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| 69 | * void* client_data (DEFAULT: NULL ) passed back through the callbacks |
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| 70 | */ |
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| 71 | FLAC__FileDecoder *FLAC__file_decoder_new(); |
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| 72 | void FLAC__file_decoder_delete(FLAC__FileDecoder *); |
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| 73 | |||
| 74 | /*********************************************************************** |
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| 75 | * |
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| 76 | * Public class method prototypes |
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| 77 | * |
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| 78 | ***********************************************************************/ |
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| 79 | |||
| 80 | /* |
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| 81 | * Various "set" methods. These may only be called when the decoder |
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| 82 | * is in the state FLAC__FILE_DECODER_UNINITIALIZED, i.e. after |
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| 83 | * FLAC__file_decoder_new() or FLAC__file_decoder_finish(), but |
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| 84 | * before FLAC__file_decoder_init(). If this is the case they will |
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| 85 | * return true, otherwise false. |
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| 86 | * |
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| 87 | * NOTE that these functions do not validate the values as many are |
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| 88 | * interdependent. The FLAC__file_decoder_init() function will do |
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| 89 | * this, so make sure to pay attention to the state returned by |
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| 90 | * FLAC__file_decoder_init(). |
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| 91 | * |
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| 92 | * Any parameters that are not set before FLAC__file_decoder_init() |
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| 93 | * will take on the defaults from the constructor. NOTE that |
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| 94 | * FLAC__file_decoder_flush() or FLAC__file_decoder_reset() do |
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| 95 | * NOT reset the values to the constructor defaults. |
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| 96 | */ |
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| 97 | FLAC__bool FLAC__file_decoder_set_md5_checking(const FLAC__FileDecoder *decoder, FLAC__bool value); |
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| 98 | FLAC__bool FLAC__file_decoder_set_filename(const FLAC__FileDecoder *decoder, const char *value); |
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| 99 | FLAC__bool FLAC__file_decoder_set_write_callback(const FLAC__FileDecoder *decoder, FLAC__StreamDecoderWriteStatus (*value)(const FLAC__FileDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 *buffer[], void *client_data)); |
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| 100 | FLAC__bool FLAC__file_decoder_set_metadata_callback(const FLAC__FileDecoder *decoder, void (*value)(const FLAC__FileDecoder *decoder, const FLAC__StreamMetaData *metadata, void *client_data)); |
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| 101 | FLAC__bool FLAC__file_decoder_set_error_callback(const FLAC__FileDecoder *decoder, void (*value)(const FLAC__FileDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data)); |
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| 102 | FLAC__bool FLAC__file_decoder_set_client_data(const FLAC__FileDecoder *decoder, void *value); |
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| 103 | |||
| 104 | /* |
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| 105 | * Various "get" methods |
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| 106 | */ |
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| 107 | FLAC__FileDecoderState FLAC__file_decoder_get_state(const FLAC__FileDecoder *decoder); |
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| 108 | FLAC__bool FLAC__file_decoder_get_md5_checking(const FLAC__FileDecoder *decoder); |
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| 109 | |||
| 110 | /* |
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| 111 | * Initialize the instance; should be called after construction and |
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| 112 | * 'set' calls but before any of the 'process' or 'seek' calls. Will |
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| 113 | * set and return the decoder state, which will be FLAC__FILE_DECODER_OK |
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| 114 | * if initializationsucceeded. |
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| 115 | */ |
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| 116 | FLAC__FileDecoderState FLAC__file_decoder_init(FLAC__FileDecoder *decoder); |
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| 117 | |||
| 118 | /* |
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| 119 | * Flush the decoding buffer, release resources, and return the decoder |
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| 120 | * state to FLAC__FILE_DECODER_UNINITIALIZED. Only returns false if |
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| 121 | * md5_checking is set AND the stored MD5 sum is non-zero AND the stored |
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| 122 | * MD5 sum and computed MD5 sum do not match. |
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| 123 | */ |
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| 124 | FLAC__bool FLAC__file_decoder_finish(FLAC__FileDecoder *decoder); |
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| 125 | |||
| 126 | /* |
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| 127 | * Methods for decoding the data |
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| 128 | */ |
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| 129 | FLAC__bool FLAC__file_decoder_process_whole_file(FLAC__FileDecoder *decoder); |
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| 130 | FLAC__bool FLAC__file_decoder_process_metadata(FLAC__FileDecoder *decoder); |
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| 131 | FLAC__bool FLAC__file_decoder_process_one_frame(FLAC__FileDecoder *decoder); |
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| 132 | FLAC__bool FLAC__file_decoder_process_remaining_frames(FLAC__FileDecoder *decoder); |
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| 133 | |||
| 134 | FLAC__bool FLAC__file_decoder_seek_absolute(FLAC__FileDecoder *decoder, FLAC__uint64 sample); |
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| 135 | |||
| 136 | #endif |