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/* wave.h - WAVE data definitions
* Copyright (C) 2000-2009 Jason Jordan <shnutils@freeshell.org>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
/*
* $Id: wave.h,v 1.48 2009/03/11 17:18:01 jason Exp $
*/
#ifndef __WAVE_H__
#define __WAVE_H__
#include <stdio.h>
#include "format-types.h"
#define WAVE_RIFF "RIFF"
#define WAVE_WAVE "WAVE"
#define WAVE_FMT "fmt "
#define WAVE_DATA "data"
#define AIFF_FORM "FORM"
#define AIFF_FORM_TYPE_AIFF "AIFF"
#define AIFF_FORM_TYPE_AIFC "AIFC"
#define AIFF_COMM "COMM"
#define AIFF_COMPRESSION_NONE "NONE"
#define AIFF_COMPRESSION_SOWT "sowt"
#define AIFF_SSND "SSND"
#define WAVE_FORMAT_UNKNOWN (0x0000)
#define WAVE_FORMAT_PCM (0x0001)
#define WAVE_FORMAT_ADPCM (0x0002)
#define WAVE_FORMAT_IEEE_FLOAT (0x0003)
#define WAVE_FORMAT_ALAW (0x0006)
#define WAVE_FORMAT_MULAW (0x0007)
#define WAVE_FORMAT_OKI_ADPCM (0x0010)
#define WAVE_FORMAT_IMA_ADPCM (0x0011)
#define WAVE_FORMAT_DIGISTD (0x0015)
#define WAVE_FORMAT_DIGIFIX (0x0016)
#define WAVE_FORMAT_DOLBY_AC2 (0x0030)
#define WAVE_FORMAT_GSM610 (0x0031)
#define WAVE_FORMAT_ROCKWELL_ADPCM (0x003b)
#define WAVE_FORMAT_ROCKWELL_DIGITALK (0x003c)
#define WAVE_FORMAT_G721_ADPCM (0x0040)
#define WAVE_FORMAT_G728_CELP (0x0041)
#define WAVE_FORMAT_MPEG (0x0050)
#define WAVE_FORMAT_MPEGLAYER3 (0x0055)
#define WAVE_FORMAT_G726_ADPCM (0x0064)
#define WAVE_FORMAT_G722_ADPCM (0x0065)
#define CD_BLOCK_SIZE (2352)
#define CD_BLOCKS_PER_SEC (75)
#define CD_BLOCK_ALIGN (4)
#define CD_MIN_BURNABLE_SIZE (705600)
#define CD_CHANNELS (2)
#define CD_SAMPLES_PER_SEC (44100)
#define CD_BITS_PER_SAMPLE (16)
#define CD_RATE (176400)
#define CANONICAL_HEADER_SIZE (44)
#define PROBLEM_NOT_CD_QUALITY (0x00000001)
#define PROBLEM_CD_BUT_BAD_BOUND (0x00000002)
#define PROBLEM_CD_BUT_TOO_SHORT (0x00000004)
#define PROBLEM_HEADER_NOT_CANONICAL (0x00000008)
#define PROBLEM_EXTRA_CHUNKS (0x00000010)
#define PROBLEM_HEADER_INCONSISTENT (0x00000020)
#define PROBLEM_MAY_BE_TRUNCATED (0x00000040)
#define PROBLEM_JUNK_APPENDED (0x00000080)
#define PROBLEM_DATA_NOT_ALIGNED (0x00000100)
/* macros to determine if files have certain problems */
#define PROB_NOT_CD(f) ((f->problems) & (PROBLEM_NOT_CD_QUALITY))
#define PROB_BAD_BOUND(f) ((f->problems) & (PROBLEM_CD_BUT_BAD_BOUND))
#define PROB_TOO_SHORT(f) ((f->problems) & (PROBLEM_CD_BUT_TOO_SHORT))
#define PROB_HDR_NOT_CANONICAL(f) ((f->problems) & (PROBLEM_HEADER_NOT_CANONICAL))
#define PROB_EXTRA_CHUNKS(f) ((f->problems) & (PROBLEM_EXTRA_CHUNKS))
#define PROB_HDR_INCONSISTENT(f) ((f->problems) & (PROBLEM_HEADER_INCONSISTENT))
#define PROB_TRUNCATED(f) ((f->problems) & (PROBLEM_MAY_BE_TRUNCATED))
#define PROB_JUNK_APPENDED(f) ((f->problems) & (PROBLEM_JUNK_APPENDED))
#define PROB_DATA_NOT_ALIGNED(f) ((f->problems) & (PROBLEM_DATA_NOT_ALIGNED))
#define PROB_ODD_SIZED_DATA(f) (f->data_size & 1)
typedef struct _wave_info {
char *filename, /* file name of input file */
m_ss[16]; /* length, in m:ss.nnn or m:ss.ff format */
wint header_size; /* length of header, in bytes */
long extra_riff_size; /* total size of any extra RIFF chunks */
wshort channels, /* number of channels */
block_align, /* block align */
bits_per_sample, /* bits per sample */
wave_format; /* WAVE data format */
wlong samples_per_sec, /* samples per second */
avg_bytes_per_sec, /* average bytes per second (should equal rate) */
rate, /* calculated rate (should equal avg_bytes_per_sec) */
length, /* length of file, in seconds */
data_size, /* length of data chunk, as reported in the header */
padded_data_size, /* length of data chunk, including possible pad byte */
total_size, /* total length of the WAVE data, header and all */
chunk_size, /* read from header, should be total_size - 8 */
actual_size, /* set to the size of input file - this is misleading, */
/* since the input file may be compressed */
new_data_size, /* (set and used only in certain modes, ignore) */
beginning_byte, /* (set and used only in certain modes, ignore) */
new_beginning_byte; /* (set and used only in certain modes, ignore) */
double exact_length; /* length of file, in seconds (with ms precision) */
unsigned long problems; /* bitmap of problems found with the file, see above */
struct _format_module
*input_format; /* pointer to the input format module that opens this */
FILE *input, *output; /* input/output file pointers (= NULL, use as needed) */
proc_info input_proc; /* pid (and handle on WIN32) of child input process */
proc_info output_proc; /* pid (and handle on WIN32) of child output process */
bool file_has_id3v2_tag; /* does this file contain an ID3v2 tag? */
bool stream_has_id3v2_tag; /* does the decoded input stream contain an ID3v2 tag? */
wlong id3v2_tag_size; /* size of the ID3v2 tag this file contains, if any */
} wave_info;
/* returns a wave_info struct, filled out with the values of the WAVE data contained in the filename given. */
/* If called with NULL as the argument, then a wave_info struct is returned with all fields zero'd out. */
wave_info *new_wave_info(char *);
/* constructs a canonical WAVE header from the values in the wave_info struct */
void make_canonical_header(unsigned char *buf,wave_info *info);
/* returns a string corresponding to the WAVE format code given */
char *format_to_str(wshort);
/* replaces the size chunk size at beginning of the wave header */
void put_chunk_size(unsigned char *,unsigned long);
/* replaces the size reported in the "data" chunk of the wave header with the new size -
also updates chunk size at beginning of the wave header */
void put_data_size(unsigned char *,int,unsigned long);
/* kluges the WAVE header to get correct values when helper programs don't provide them */
bool do_header_kluges(unsigned char *,wave_info *);
/* verifies that data coming in on the associated file descriptor describes a valid WAVE header */
bool verify_wav_header_internal(wave_info *,bool);
#define verify_wav_header(a) verify_wav_header_internal(a,FALSE)
#endif
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