1 /* 2 Copyright (c) 2005-2009, The Musepack Development Team 3 All rights reserved. 4 5 Redistribution and use in source and binary forms, with or without 6 modification, are permitted provided that the following conditions are 7 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 13 copyright notice, this list of conditions and the following 14 disclaimer in the documentation and/or other materials provided 15 with the distribution. 16 17 * Neither the name of the The Musepack Development Team nor the 18 names of its contributors may be used to endorse or promote 19 products derived from this software without specific prior 20 written permission. 21 22 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 23 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 24 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 25 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 26 OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 27 SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 28 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 29 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 30 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 31 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 32 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 33 */ 34 /// \file streaminfo.h 35 #ifndef _MPCDEC_STREAMINFO_H_ 36 #define _MPCDEC_STREAMINFO_H_ 37 #ifdef WIN32 38 #pragma once 39 #endif 40 41 #include "mpc_types.h" 42 43 #ifdef __cplusplus 44 extern "C" { 45 #endif 46 47 48 typedef mpc_int32_t mpc_streaminfo_off_t; 49 50 /// \brief mpc stream properties structure 51 /// 52 /// Structure containing all the properties of an mpc stream. Populated 53 /// by the streaminfo_read function. 54 typedef struct mpc_streaminfo { 55 /// @name Core mpc stream properties 56 //@{ 57 mpc_uint32_t sample_freq; ///< Sample frequency of stream 58 mpc_uint32_t channels; ///< Number of channels in stream 59 mpc_uint32_t stream_version; ///< Streamversion of stream 60 mpc_uint32_t bitrate; ///< Bitrate of stream file (in bps) 61 double average_bitrate; ///< Average bitrate of stream (in bits/sec) 62 mpc_uint32_t max_band; ///< Maximum band-index used in stream (0...31) 63 mpc_uint32_t ms; ///< Mid/side stereo (0: off, 1: on) 64 mpc_uint32_t fast_seek; ///< True if stream supports fast-seeking (sv7) 65 mpc_uint32_t block_pwr; ///< Number of frames in a block = 2^block_pwr (sv8) 66 //@} 67 68 /// @name Replaygain properties 69 //@{ 70 mpc_uint16_t gain_title; ///< Replaygain title value 71 mpc_uint16_t gain_album; ///< Replaygain album value 72 mpc_uint16_t peak_album; ///< Peak album loudness level 73 mpc_uint16_t peak_title; ///< Peak title loudness level 74 //@} 75 76 /// @name True gapless properties 77 //@{ 78 mpc_uint32_t is_true_gapless; ///< True gapless? (0: no, 1: yes) 79 mpc_uint64_t samples; ///< Number of samples in the stream 80 mpc_uint64_t beg_silence; ///< Number of samples that must not be played at the beginning of the stream 81 //@} 82 83 /// @name Encoder informations 84 //@{ 85 mpc_uint32_t encoder_version; ///< Version of encoder used 86 char encoder[256]; ///< Encoder name 87 mpc_bool_t pns; ///< pns used 88 float profile; ///< Quality profile of stream 89 const char* profile_name; ///< Name of profile used by stream 90 //@} 91 92 93 mpc_streaminfo_off_t header_position; ///< Byte offset of position of header in stream 94 mpc_streaminfo_off_t tag_offset; ///< Offset to file tags 95 mpc_streaminfo_off_t total_file_length; ///< Total length of underlying file 96 } mpc_streaminfo; 97 98 /// Gets length of stream si, in seconds. 99 /// \return length of stream in seconds 100 MPC_API double mpc_streaminfo_get_length(mpc_streaminfo *si); 101 102 /// Returns length of stream si, in samples. 103 /// \return length of stream in samples 104 MPC_API mpc_int64_t mpc_streaminfo_get_length_samples(mpc_streaminfo *si); 105 106 #ifdef __cplusplus 107 } 108 #endif 109 #endif 110