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Diffstat (limited to 'include/ReadRaw.h')
| -rw-r--r-- | include/ReadRaw.h | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/include/ReadRaw.h b/include/ReadRaw.h new file mode 100644 index 0000000..9906ecf --- /dev/null +++ b/include/ReadRaw.h @@ -0,0 +1,154 @@ +/* + * readanysf~ external for pd. + * + * Copyright (C) 2003 August Black + * + * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * ReadRaw.h + */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif + + +#ifndef _READRAW_H_ +#define _READRAW_H_ + +#include <stdio.h> +#include <stdlib.h> +#include <math.h> +#include "Readsf.h" + +typedef struct _nextstep +{ + char ns_fileid[4]; /* magic number '.snd' if file is big-endian */ + unsigned int ns_onset; /* byte offset of first sample */ + unsigned int ns_length; /* length of sound in bytes */ + unsigned int ns_format; /* format; see below */ + unsigned int ns_sr; /* sample rate */ + unsigned int ns_nchans; /* number of channels */ + char ns_info[4]; /* comment */ +} t_nextstep; + +typedef struct _wave +{ + char w_fileid[4]; /* chunk id 'RIFF' */ + unsigned int w_chunksize; /* chunk size */ + char w_waveid[4]; /* wave chunk id 'WAVE' */ + char w_fmtid[4]; /* format chunk id 'fmt ' */ + unsigned int w_fmtchunksize; /* format chunk size */ + unsigned short w_fmttag; /* format tag, 1 for PCM */ + unsigned short w_nchannels; /* number of channels */ + unsigned int w_samplespersec; /* sample rate in hz */ + unsigned int w_navgbytespersec; /* average bytes per second */ + unsigned short w_nblockalign; /* number of bytes per frame */ + unsigned short w_nbitspersample; /* number of bits in a sample */ + char w_datachunkid[4]; /* data chunk id 'data' */ + unsigned int w_datachunksize; /* length of data chunk */ +} t_wave; + +typedef struct _fmt /* format chunk */ +{ + unsigned short f_fmttag; /* format tag, 1 for PCM */ + unsigned short f_nchannels; /* number of channels */ + unsigned int f_samplespersec; /* sample rate in hz */ + unsigned int f_navgbytespersec; /* average bytes per second */ + unsigned short f_nblockalign; /* number of bytes per frame */ + unsigned short f_nbitspersample; /* number of bits in a sample */ +} t_fmt; + +typedef struct _wavechunk /* ... and the last two items */ +{ + char wc_id[4]; /* data chunk id, e.g., 'data' or 'fmt ' */ + unsigned int wc_size; /* length of data chunk */ +} t_wavechunk; + +/* the AIFF header. I'm assuming AIFC is compatible but don't really know + that. */ + +typedef struct _datachunk +{ + char dc_id[4]; /* data chunk id 'SSND' */ + unsigned int dc_size; /* length of data chunk */ +} t_datachunk; + +typedef struct _comm +{ + unsigned short c_nchannels; /* number of channels */ + unsigned short c_nframeshi; /* # of sample frames (hi) */ + unsigned short c_nframeslo; /* # of sample frames (lo) */ + unsigned short c_bitspersamp; /* bits per sample */ + unsigned char c_samprate[10]; /* sample rate, 80-bit float! */ +} t_comm; + + /* this version is more convenient for writing them out: */ +typedef struct _aiff +{ + char a_fileid[4]; /* chunk id 'FORM' */ + unsigned int a_chunksize; /* chunk size */ + char a_aiffid[4]; /* aiff chunk id 'AIFF' */ + char a_fmtid[4]; /* format chunk id 'COMM' */ + unsigned int a_fmtchunksize; /* format chunk size, 18 */ + unsigned short a_nchannels; /* number of channels */ + unsigned short a_nframeshi; /* # of sample frames (hi) */ + unsigned short a_nframeslo; /* # of sample frames (lo) */ + unsigned short a_bitspersamp; /* bits per sample */ + unsigned char a_samprate[10]; /* sample rate, 80-bit float! */ +} t_aiff; + + +#define NS_FORMAT_LINEAR_16 3 +#define NS_FORMAT_LINEAR_24 4 +#define NS_FORMAT_FLOAT 6 +#define SCALE (1./(1024. * 1024. * 1024. * 2.)) + + +#define AIFFHDRSIZE 38 /* probably not what sizeof() gives */ +#define AIFFPLUS (AIFFHDRSIZE + 8) /* header size including first chunk hdr */ + +#define WHDR1 sizeof(t_nextstep) +#define WHDR2 (sizeof(t_wave) > WHDR1 ? sizeof (t_wave) : WHDR1) +#define WRITEHDRSIZE (AIFFPLUS > WHDR2 ? AIFFPLUS : WHDR2) + +#define READHDRSIZE (16 > WHDR2 + 2 ? 16 : WHDR2 + 2) + + +class ReadRaw : public Readsf { + private: + + long ret; + unsigned char data[WAVCHUNKSIZE * 4 * 2]; //WAVCHUNKSIZE * bytespersamp * num_channels; + + int headersize; + int bytespersamp; + int bigendian; + public: + ReadRaw ( ); + ReadRaw( Input *input ); + virtual ~ReadRaw(); + virtual bool Initialize(); + virtual int Decode(float *buffer,int size); + virtual bool Rewind(); + virtual bool PCM_seek(long bytes); + virtual bool TIME_seek(double seconds); +}; + + + + + +#endif |