1/* 2** Copyright (C) 2001-2017 Erik de Castro Lopo <erikd@mega-nerd.com> 3** 4** This program is free software; you can redistribute it and/or modify 5** it under the terms of the GNU Lesser General Public License as published by 6** the Free Software Foundation; either version 2.1 of the License, or 7** (at your option) any later version. 8** 9** This program is distributed in the hope that it will be useful, 10** but WITHOUT ANY WARRANTY; without even the implied warranty of 11** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12** GNU Lesser General Public License for more details. 13** 14** You should have received a copy of the GNU Lesser General Public License 15** along with this program; if not, write to the Free Software 16** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 17*/ 18 19#include "sfconfig.h" 20 21#include <stdio.h> 22#include <fcntl.h> 23#include <string.h> 24#include <ctype.h> 25 26#include "sndfile.h" 27#include "sfendian.h" 28#include "common.h" 29 30/*------------------------------------------------------------------------------ 31** Macros to handle big/little endian issues. 32*/ 33 34/* The IRCAM magic number is weird in that one byte in the number can have 35** values of 0x1, 0x2, 0x03 or 0x04. Hence the need for a marker and a mask. 36*/ 37 38#define IRCAM_BE_MASK (MAKE_MARKER (0xFF, 0xFF, 0x00, 0xFF)) 39#define IRCAM_BE_MARKER (MAKE_MARKER (0x64, 0xA3, 0x00, 0x00)) 40 41#define IRCAM_LE_MASK (MAKE_MARKER (0xFF, 0x00, 0xFF, 0xFF)) 42#define IRCAM_LE_MARKER (MAKE_MARKER (0x00, 0x00, 0xA3, 0x64)) 43 44#define IRCAM_02B_MARKER (MAKE_MARKER (0x64, 0xA3, 0x02, 0x00)) 45#define IRCAM_03L_MARKER (MAKE_MARKER (0x64, 0xA3, 0x03, 0x00)) 46 47#define IRCAM_DATA_OFFSET (1024) 48 49/*------------------------------------------------------------------------------ 50** Typedefs. 51*/ 52 53enum 54{ IRCAM_PCM_16 = 0x00002, 55 IRCAM_FLOAT = 0x00004, 56 IRCAM_ALAW = 0x10001, 57 IRCAM_ULAW = 0x20001, 58 IRCAM_PCM_32 = 0x40004 59} ; 60 61 62/*------------------------------------------------------------------------------ 63** Private static functions. 64*/ 65 66static int ircam_close (SF_PRIVATE *psf) ; 67static int ircam_write_header (SF_PRIVATE *psf, int calc_length) ; 68static int ircam_read_header (SF_PRIVATE *psf) ; 69 70static int get_encoding (int subformat) ; 71 72static const char* get_encoding_str (int encoding) ; 73 74/*------------------------------------------------------------------------------ 75** Public function. 76*/ 77 78int 79ircam_open (SF_PRIVATE *psf) 80{ int subformat ; 81 int error = SFE_NO_ERROR ; 82 83 if (psf->file.mode == SFM_READ || (psf->file.mode == SFM_RDWR && psf->filelength > 0)) 84 { if ((error = ircam_read_header (psf))) 85 return error ; 86 } ; 87 88 subformat = SF_CODEC (psf->sf.format) ; 89 90 if (psf->file.mode == SFM_WRITE || psf->file.mode == SFM_RDWR) 91 { if ((SF_CONTAINER (psf->sf.format)) != SF_FORMAT_IRCAM) 92 return SFE_BAD_OPEN_FORMAT ; 93 94 psf->endian = SF_ENDIAN (psf->sf.format) ; 95 if (psf->endian == 0 || psf->endian == SF_ENDIAN_CPU) 96 psf->endian = (CPU_IS_BIG_ENDIAN) ? SF_ENDIAN_BIG : SF_ENDIAN_LITTLE ; 97 98 psf->dataoffset = IRCAM_DATA_OFFSET ; 99 100 if ((error = ircam_write_header (psf, SF_FALSE))) 101 return error ; 102 103 psf->write_header = ircam_write_header ; 104 } ; 105 106 psf->container_close = ircam_close ; 107 108 switch (subformat) 109 { case SF_FORMAT_ULAW : /* 8-bit Ulaw encoding. */ 110 error = ulaw_init (psf) ; 111 break ; 112 113 case SF_FORMAT_ALAW : /* 8-bit Alaw encoding. */ 114 error = alaw_init (psf) ; 115 break ; 116 117 case SF_FORMAT_PCM_16 : /* 16-bit linear PCM. */ 118 case SF_FORMAT_PCM_32 : /* 32-bit linear PCM. */ 119 error = pcm_init (psf) ; 120 break ; 121 122 case SF_FORMAT_FLOAT : /* 32-bit linear PCM. */ 123 error = float32_init (psf) ; 124 break ; 125 126 default : break ; 127 } ; 128 129 return error ; 130} /* ircam_open */ 131 132/*------------------------------------------------------------------------------ 133*/ 134 135static int 136ircam_read_header (SF_PRIVATE *psf) 137{ unsigned int marker, encoding ; 138 float samplerate ; 139 int error = SFE_NO_ERROR ; 140 141 psf_binheader_readf (psf, "epmf44", 0, &marker, &samplerate, &(psf->sf.channels), &encoding) ; 142 143 if (((marker & IRCAM_BE_MASK) != IRCAM_BE_MARKER) && ((marker & IRCAM_LE_MASK) != IRCAM_LE_MARKER)) 144 { psf_log_printf (psf, "marker: 0x%X\n", marker) ; 145 return SFE_IRCAM_NO_MARKER ; 146 } ; 147 148 psf->endian = SF_ENDIAN_LITTLE ; 149 150 if (psf->sf.channels > SF_MAX_CHANNELS) 151 { psf_binheader_readf (psf, "Epmf44", 0, &marker, &samplerate, &(psf->sf.channels), &encoding) ; 152 153 /* Sanity checking for endian-ness detection. */ 154 if (psf->sf.channels > SF_MAX_CHANNELS) 155 { psf_log_printf (psf, "marker: 0x%X\n", marker) ; 156 return SFE_IRCAM_BAD_CHANNELS ; 157 } ; 158 159 psf->endian = SF_ENDIAN_BIG ; 160 } ; 161 162 psf_log_printf (psf, "marker: 0x%X\n", marker) ; 163 164 psf->sf.samplerate = (int) samplerate ; 165 166 psf_log_printf (psf, " Sample Rate : %d\n" 167 " Channels : %d\n" 168 " Encoding : %X => %s\n", 169 psf->sf.samplerate, psf->sf.channels, encoding, get_encoding_str (encoding)) ; 170 171 switch (encoding) 172 { case IRCAM_PCM_16 : 173 psf->bytewidth = 2 ; 174 psf->blockwidth = psf->sf.channels * psf->bytewidth ; 175 176 psf->sf.format = SF_FORMAT_IRCAM | SF_FORMAT_PCM_16 ; 177 break ; 178 179 case IRCAM_PCM_32 : 180 psf->bytewidth = 4 ; 181 psf->blockwidth = psf->sf.channels * psf->bytewidth ; 182 183 psf->sf.format = SF_FORMAT_IRCAM | SF_FORMAT_PCM_32 ; 184 break ; 185 186 case IRCAM_FLOAT : 187 psf->bytewidth = 4 ; 188 psf->blockwidth = psf->sf.channels * psf->bytewidth ; 189 190 psf->sf.format = SF_FORMAT_IRCAM | SF_FORMAT_FLOAT ; 191 break ; 192 193 case IRCAM_ALAW : 194 psf->bytewidth = 1 ; 195 psf->blockwidth = psf->sf.channels * psf->bytewidth ; 196 197 psf->sf.format = SF_FORMAT_IRCAM | SF_FORMAT_ALAW ; 198 break ; 199 200 case IRCAM_ULAW : 201 psf->bytewidth = 1 ; 202 psf->blockwidth = psf->sf.channels * psf->bytewidth ; 203 204 psf->sf.format = SF_FORMAT_IRCAM | SF_FORMAT_ULAW ; 205 break ; 206 207 default : 208 error = SFE_IRCAM_UNKNOWN_FORMAT ; 209 break ; 210 } ; 211 212 if (psf->endian == SF_ENDIAN_BIG) 213 psf->sf.format |= SF_ENDIAN_BIG ; 214 else 215 psf->sf.format |= SF_ENDIAN_LITTLE ; 216 217 if (error) 218 return error ; 219 220 psf->dataoffset = IRCAM_DATA_OFFSET ; 221 psf->datalength = psf->filelength - psf->dataoffset ; 222 223 if (psf->sf.frames == 0 && psf->blockwidth) 224 psf->sf.frames = psf->datalength / psf->blockwidth ; 225 226 psf_log_printf (psf, " Samples : %d\n", psf->sf.frames) ; 227 228 psf_binheader_readf (psf, "p", IRCAM_DATA_OFFSET) ; 229 230 return 0 ; 231} /* ircam_read_header */ 232 233static int 234ircam_close (SF_PRIVATE *psf) 235{ 236 psf_log_printf (psf, "close\n") ; 237 238 return 0 ; 239} /* ircam_close */ 240 241static int 242ircam_write_header (SF_PRIVATE *psf, int UNUSED (calc_length)) 243{ int encoding ; 244 float samplerate ; 245 sf_count_t current ; 246 247 if (psf->pipeoffset > 0) 248 return 0 ; 249 250 current = psf_ftell (psf) ; 251 252 /* This also sets psf->endian. */ 253 encoding = get_encoding (SF_CODEC (psf->sf.format)) ; 254 255 if (encoding == 0) 256 return SFE_BAD_OPEN_FORMAT ; 257 258 /* Reset the current header length to zero. */ 259 psf->header.ptr [0] = 0 ; 260 psf->header.indx = 0 ; 261 262 if (psf->is_pipe == SF_FALSE) 263 psf_fseek (psf, 0, SEEK_SET) ; 264 265 samplerate = psf->sf.samplerate ; 266 267 switch (psf->endian) 268 { case SF_ENDIAN_BIG : 269 psf_binheader_writef (psf, "Emf", BHWm (IRCAM_02B_MARKER), BHWf (samplerate)) ; 270 psf_binheader_writef (psf, "E44", BHW4 (psf->sf.channels), BHW4 (encoding)) ; 271 break ; 272 273 case SF_ENDIAN_LITTLE : 274 psf_binheader_writef (psf, "emf", BHWm (IRCAM_03L_MARKER), BHWf (samplerate)) ; 275 psf_binheader_writef (psf, "e44", BHW4 (psf->sf.channels), BHW4 (encoding)) ; 276 break ; 277 278 default : return SFE_BAD_OPEN_FORMAT ; 279 } ; 280 281 psf_binheader_writef (psf, "z", BHWz ((size_t) (IRCAM_DATA_OFFSET - psf->header.indx))) ; 282 283 /* Header construction complete so write it out. */ 284 psf_fwrite (psf->header.ptr, psf->header.indx, 1, psf) ; 285 286 if (psf->error) 287 return psf->error ; 288 289 if (current > 0) 290 psf_fseek (psf, current, SEEK_SET) ; 291 292 return psf->error ; 293} /* ircam_write_header */ 294 295static int 296get_encoding (int subformat) 297{ switch (subformat) 298 { case SF_FORMAT_PCM_16 : return IRCAM_PCM_16 ; 299 case SF_FORMAT_PCM_32 : return IRCAM_PCM_32 ; 300 301 case SF_FORMAT_FLOAT : return IRCAM_FLOAT ; 302 303 case SF_FORMAT_ULAW : return IRCAM_ULAW ; 304 case SF_FORMAT_ALAW : return IRCAM_ALAW ; 305 306 default : break ; 307 } ; 308 309 return 0 ; 310} /* get_encoding */ 311 312static const char* 313get_encoding_str (int encoding) 314{ switch (encoding) 315 { case IRCAM_PCM_16 : return "16 bit PCM" ; 316 case IRCAM_FLOAT : return "32 bit float" ; 317 case IRCAM_ALAW : return "A law" ; 318 case IRCAM_ULAW : return "u law" ; 319 case IRCAM_PCM_32 : return "32 bit PCM" ; 320 } ; 321 return "Unknown encoding" ; 322} /* get_encoding_str */ 323 324