mirror of
https://github.com/godotengine/godot.git
synced 2024-11-27 09:16:35 +08:00
95 lines
3.3 KiB
C++
95 lines
3.3 KiB
C++
/*
|
|
Copyright (c) 2005-2009, The Musepack Development Team
|
|
All rights reserved.
|
|
|
|
Redistribution and use in source and binary forms, with or without
|
|
modification, are permitted provided that the following conditions are
|
|
met:
|
|
|
|
* Redistributions of source code must retain the above copyright
|
|
notice, this list of conditions and the following disclaimer.
|
|
|
|
* Redistributions in binary form must reproduce the above
|
|
copyright notice, this list of conditions and the following
|
|
disclaimer in the documentation and/or other materials provided
|
|
with the distribution.
|
|
|
|
* Neither the name of the The Musepack Development Team nor the
|
|
names of its contributors may be used to endorse or promote
|
|
products derived from this software without specific prior
|
|
written permission.
|
|
|
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
/// \file internal.h
|
|
/// Definitions and structures used only internally by the libmpcdec.
|
|
#ifndef _MPCDEC_INTERNAL_H_
|
|
#define _MPCDEC_INTERNAL_H_
|
|
#ifdef WIN32
|
|
#pragma once
|
|
#endif
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
#include <mpc/mpcdec.h>
|
|
|
|
/// Big/little endian 32 bit byte swapping routine.
|
|
static mpc_inline
|
|
mpc_uint32_t mpc_swap32(mpc_uint32_t val) {
|
|
return (((val & 0xFF000000) >> 24) | ((val & 0x00FF0000) >> 8)
|
|
| ((val & 0x0000FF00) << 8) | ((val & 0x000000FF) << 24));
|
|
}
|
|
|
|
typedef struct mpc_block_t {
|
|
char key[2]; // block key
|
|
mpc_uint64_t size; // block size minus the block header size
|
|
} mpc_block;
|
|
|
|
#define MAX_FRAME_SIZE 4352
|
|
#define DEMUX_BUFFER_SIZE (65536 - MAX_FRAME_SIZE) // need some space as sand box
|
|
|
|
struct mpc_demux_t {
|
|
mpc_reader * r;
|
|
mpc_decoder * d;
|
|
mpc_streaminfo si;
|
|
|
|
// buffer
|
|
mpc_uint8_t buffer[DEMUX_BUFFER_SIZE + MAX_FRAME_SIZE];
|
|
mpc_size_t bytes_total;
|
|
mpc_bits_reader bits_reader;
|
|
mpc_int32_t block_bits; /// bits remaining in current audio block
|
|
mpc_uint_t block_frames; /// frames remaining in current audio block
|
|
|
|
// seeking
|
|
mpc_seek_t * seek_table;
|
|
mpc_uint_t seek_pwr; /// distance between 2 frames in seek_table = 2^seek_pwr
|
|
mpc_uint32_t seek_table_size; /// used size in seek_table
|
|
|
|
// chapters
|
|
mpc_seek_t chap_pos; /// supposed position of the first chapter block
|
|
mpc_int_t chap_nb; /// number of chapters (-1 if unknown, 0 if no chapter)
|
|
mpc_chap_info * chap; /// chapters position and tag
|
|
|
|
};
|
|
|
|
/// helper functions used by multiple files
|
|
mpc_uint32_t mpc_random_int(mpc_decoder *d); // in synth_filter.c
|
|
void mpc_decoder_init_quant(mpc_decoder *d, double scale_factor);
|
|
void mpc_decoder_synthese_filter_float(mpc_decoder *d, MPC_SAMPLE_FORMAT* OutData, mpc_int_t channels);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
#endif
|