| ce188d4d |
1 | /* libFLAC - Free Lossless Audio Codec library |
| 2 | * Copyright (C) 2000-2009 Josh Coalson |
| 3 | * Copyright (C) 2011-2016 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__BITREADER_H |
| 34 | #define FLAC__PRIVATE__BITREADER_H |
| 35 | |
| 36 | #include <stdio.h> /* for FILE */ |
| 37 | #include "FLAC/ordinals.h" |
| 38 | #include "cpu.h" |
| 39 | |
| 40 | /* |
| 41 | * opaque structure definition |
| 42 | */ |
| 43 | struct FLAC__BitReader; |
| 44 | typedef struct FLAC__BitReader FLAC__BitReader; |
| 45 | |
| 46 | typedef FLAC__bool (*FLAC__BitReaderReadCallback)(FLAC__byte buffer[], size_t *bytes, void *client_data); |
| 47 | |
| 48 | /* |
| 49 | * construction, deletion, initialization, etc functions |
| 50 | */ |
| 51 | FLAC__BitReader *FLAC__bitreader_new(void); |
| 52 | void FLAC__bitreader_delete(FLAC__BitReader *br); |
| 53 | FLAC__bool FLAC__bitreader_init(FLAC__BitReader *br, FLAC__BitReaderReadCallback rcb, void *cd); |
| 54 | void FLAC__bitreader_free(FLAC__BitReader *br); /* does not 'free(br)' */ |
| 55 | FLAC__bool FLAC__bitreader_clear(FLAC__BitReader *br); |
| 56 | void FLAC__bitreader_dump(const FLAC__BitReader *br, FILE *out); |
| 57 | |
| 58 | /* |
| 59 | * CRC functions |
| 60 | */ |
| 61 | void FLAC__bitreader_reset_read_crc16(FLAC__BitReader *br, FLAC__uint16 seed); |
| 62 | FLAC__uint16 FLAC__bitreader_get_read_crc16(FLAC__BitReader *br); |
| 63 | |
| 64 | /* |
| 65 | * info functions |
| 66 | */ |
| 67 | FLAC__bool FLAC__bitreader_is_consumed_byte_aligned(const FLAC__BitReader *br); |
| 68 | unsigned FLAC__bitreader_bits_left_for_byte_alignment(const FLAC__BitReader *br); |
| 69 | unsigned FLAC__bitreader_get_input_bits_unconsumed(const FLAC__BitReader *br); |
| 70 | |
| 71 | /* |
| 72 | * read functions |
| 73 | */ |
| 74 | |
| 75 | FLAC__bool FLAC__bitreader_read_raw_uint32(FLAC__BitReader *br, FLAC__uint32 *val, unsigned bits); |
| 76 | FLAC__bool FLAC__bitreader_read_raw_int32(FLAC__BitReader *br, FLAC__int32 *val, unsigned bits); |
| 77 | FLAC__bool FLAC__bitreader_read_raw_uint64(FLAC__BitReader *br, FLAC__uint64 *val, unsigned bits); |
| 78 | FLAC__bool FLAC__bitreader_read_uint32_little_endian(FLAC__BitReader *br, FLAC__uint32 *val); /*only for bits=32*/ |
| 79 | FLAC__bool FLAC__bitreader_skip_bits_no_crc(FLAC__BitReader *br, unsigned bits); /* WATCHOUT: does not CRC the skipped data! */ /*@@@@ add to unit tests */ |
| 80 | FLAC__bool FLAC__bitreader_skip_byte_block_aligned_no_crc(FLAC__BitReader *br, unsigned nvals); /* WATCHOUT: does not CRC the read data! */ |
| 81 | FLAC__bool FLAC__bitreader_read_byte_block_aligned_no_crc(FLAC__BitReader *br, FLAC__byte *val, unsigned nvals); /* WATCHOUT: does not CRC the read data! */ |
| 82 | FLAC__bool FLAC__bitreader_read_unary_unsigned(FLAC__BitReader *br, unsigned *val); |
| 83 | FLAC__bool FLAC__bitreader_read_rice_signed(FLAC__BitReader *br, int *val, unsigned parameter); |
| 84 | FLAC__bool FLAC__bitreader_read_rice_signed_block(FLAC__BitReader *br, int vals[], unsigned nvals, unsigned parameter); |
| 85 | #if 0 /* UNUSED */ |
| 86 | FLAC__bool FLAC__bitreader_read_golomb_signed(FLAC__BitReader *br, int *val, unsigned parameter); |
| 87 | FLAC__bool FLAC__bitreader_read_golomb_unsigned(FLAC__BitReader *br, unsigned *val, unsigned parameter); |
| 88 | #endif |
| 89 | FLAC__bool FLAC__bitreader_read_utf8_uint32(FLAC__BitReader *br, FLAC__uint32 *val, FLAC__byte *raw, unsigned *rawlen); |
| 90 | FLAC__bool FLAC__bitreader_read_utf8_uint64(FLAC__BitReader *br, FLAC__uint64 *val, FLAC__byte *raw, unsigned *rawlen); |
| 91 | #endif |
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