libsmf: smf_private.h Source File

00001 /*-
00002  * Copyright (c) 2007, 2008 Edward Tomasz Napierała <trasz@FreeBSD.org>
00003  * All rights reserved.
00004  *
00005  * Redistribution and use in source and binary forms, with or without
00006  * modification, are permitted provided that the following conditions
00007  * are met:
00008  * 1. Redistributions of source code must retain the above copyright
00009  *    notice, this list of conditions and the following disclaimer.
00010  * 2. Redistributions in binary form must reproduce the above copyright
00011  *    notice, this list of conditions and the following disclaimer in the
00012  *    documentation and/or other materials provided with the distribution.
00013  *
00014  * ALTHOUGH THIS SOFTWARE IS MADE OF WIN AND SCIENCE, IT IS PROVIDED BY THE
00015  * AUTHOR AND CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
00016  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
00017  * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
00018  * THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
00019  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
00020  * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
00021  * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
00022  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
00023  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
00024  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00025  *
00026  */
00027 
00028 #ifndef SMF_PRIVATE_H
00029 #define SMF_PRIVATE_H
00030 
00031 #include <stdint.h>
00032 #include <sys/types.h>
00033 
00034 #include "config.h"
00035 
00036 #define SMF_VERSION PACKAGE_VERSION
00037 
00045 #if defined(__GNUC__)
00046 #define ATTRIBUTE_PACKED  __attribute__((__packed__))
00047 #else
00048 #define ATTRIBUTE_PACKED
00049 #pragma pack(1)
00050 #endif
00051 
00053 struct chunk_header_struct {
00054         char            id[4];
00055         uint32_t        length; 
00056 } ATTRIBUTE_PACKED;
00057 
00059 struct mthd_chunk_struct {
00060         struct chunk_header_struct      mthd_header;
00061         uint16_t                        format;
00062         uint16_t                        number_of_tracks;
00063         uint16_t                        division;
00064 } ATTRIBUTE_PACKED;
00065 
00066 #if (!defined __GNUC__)
00067 #pragma pack()
00068 #endif
00069 
00070 void smf_track_add_event(smf_track_t *track, smf_event_t *event);
00071 void smf_init_tempo(smf_t *smf);
00072 void smf_fini_tempo(smf_t *smf);
00073 void smf_create_tempo_map_and_compute_seconds(smf_t *smf);
00074 void maybe_add_to_tempo_map(smf_event_t *event);
00075 void remove_last_tempo_with_pulses(smf_t *smf, int pulses);
00076 int smf_event_is_tempo_change_or_time_signature(const smf_event_t *event) WARN_UNUSED_RESULT;
00077 int smf_event_length_is_valid(const smf_event_t *event) WARN_UNUSED_RESULT;
00078 int is_status_byte(const unsigned char status) WARN_UNUSED_RESULT;
00079 
00080 #endif /* SMF_PRIVATE_H */
00081