/* ** Copyright (C) 1999-2011 Erik de Castro Lopo ** ** This program is free software; you can redistribute it and/or modify ** it under the terms of the GNU Lesser General Public License as published by ** the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details. ** ** You should have received a copy of the GNU Lesser 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. */ #include "sfconfig.h" #include #include #include #include #include "sndfile.h" #include "sfendian.h" #include "common.h" /*------------------------------------------------------------------------------ ** Macros to handle big/little endian issues. */ #define DOTSND_MARKER (MAKE_MARKER ('.', 's', 'n', 'd')) #define DNSDOT_MARKER (MAKE_MARKER ('d', 'n', 's', '.')) #define AU_DATA_OFFSET 24 /*------------------------------------------------------------------------------ ** Known AU file encoding types. */ enum { AU_ENCODING_ULAW_8 = 1, /* 8-bit u-law samples */ AU_ENCODING_PCM_8 = 2, /* 8-bit linear samples */ AU_ENCODING_PCM_16 = 3, /* 16-bit linear samples */ AU_ENCODING_PCM_24 = 4, /* 24-bit linear samples */ AU_ENCODING_PCM_32 = 5, /* 32-bit linear samples */ AU_ENCODING_FLOAT = 6, /* floating-point samples */ AU_ENCODING_DOUBLE = 7, /* double-precision float samples */ AU_ENCODING_INDIRECT = 8, /* fragmented sampled data */ AU_ENCODING_NESTED = 9, /* ? */ AU_ENCODING_DSP_CORE = 10, /* DSP program */ AU_ENCODING_DSP_DATA_8 = 11, /* 8-bit fixed-point samples */ AU_ENCODING_DSP_DATA_16 = 12, /* 16-bit fixed-point samples */ AU_ENCODING_DSP_DATA_24 = 13, /* 24-bit fixed-point samples */ AU_ENCODING_DSP_DATA_32 = 14, /* 32-bit fixed-point samples */ AU_ENCODING_DISPLAY = 16, /* non-audio display data */ AU_ENCODING_MULAW_SQUELCH = 17, /* ? */ AU_ENCODING_EMPHASIZED = 18, /* 16-bit linear with emphasis */ AU_ENCODING_NEXT = 19, /* 16-bit linear with compression (NEXT) */ AU_ENCODING_COMPRESSED_EMPHASIZED = 20, /* A combination of the two above */ AU_ENCODING_DSP_COMMANDS = 21, /* Music Kit DSP commands */ AU_ENCODING_DSP_COMMANDS_SAMPLES = 22, /* ? */ AU_ENCODING_ADPCM_G721_32 = 23, /* G721 32 kbs ADPCM - 4 bits per sample. */ AU_ENCODING_ADPCM_G722 = 24, /* G722 64 kbs ADPCM */ AU_ENCODING_ADPCM_G723_24 = 25, /* G723 24 kbs ADPCM - 3 bits per sample. */ AU_ENCODING_ADPCM_G723_40 = 26, /* G723 40 kbs ADPCM - 5 bits per sample. */ AU_ENCODING_ALAW_8 = 27 } ; /*------------------------------------------------------------------------------ ** Typedefs. */ typedef struct { int dataoffset ; int datasize ; int encoding ; int samplerate ; int channels ; } AU_FMT ; /*------------------------------------------------------------------------------ ** Private static functions. */ static int au_close (SF_PRIVATE *psf) ; static int au_format_to_encoding (int format) ; static int au_write_header (SF_PRIVATE *psf, int calc_length) ; static int au_read_header (SF_PRIVATE *psf) ; /*------------------------------------------------------------------------------ ** Public function. */ int au_open (SF_PRIVATE *psf) { int subformat ; int error = 0 ; if (psf->file.mode == SFM_READ || (psf->file.mode == SFM_RDWR && psf->filelength > 0)) { if ((error = au_read_header (psf))) return error ; } ; if ((SF_CONTAINER (psf->sf.format)) != SF_FORMAT_AU) return SFE_BAD_OPEN_FORMAT ; subformat = SF_CODEC (psf->sf.format) ; if (psf->file.mode == SFM_WRITE || psf->file.mode == SFM_RDWR) { psf->endian = SF_ENDIAN (psf->sf.format) ; if (CPU_IS_LITTLE_ENDIAN && psf->endian == SF_ENDIAN_CPU) psf->endian = SF_ENDIAN_LITTLE ; else if (psf->endian != SF_ENDIAN_LITTLE) psf->endian = SF_ENDIAN_BIG ; if (au_write_header (psf, SF_FALSE)) return psf->error ; psf->write_header = au_write_header ; } ; psf->container_close = au_close ; psf->blockwidth = psf->bytewidth * psf->sf.channels ; switch (subformat) { case SF_FORMAT_ULAW : /* 8-bit Ulaw encoding. */ ulaw_init (psf) ; break ; case SF_FORMAT_PCM_S8 : /* 8-bit linear PCM. */ error = pcm_init (psf) ; break ; case SF_FORMAT_PCM_16 : /* 16-bit linear PCM. */ case SF_FORMAT_PCM_24 : /* 24-bit linear PCM */ case SF_FORMAT_PCM_32 : /* 32-bit linear PCM. */ error = pcm_init (psf) ; break ; case SF_FORMAT_ALAW : /* 8-bit Alaw encoding. */ alaw_init (psf) ; break ; /* Lite remove start */ case SF_FORMAT_FLOAT : /* 32-bit floats. */ error = float32_init (psf) ; break ; case SF_FORMAT_DOUBLE : /* 64-bit double precision floats. */ error = double64_init (psf) ; break ; case SF_FORMAT_G721_32 : error = g72x_init (psf) ; psf->sf.seekable = SF_FALSE ; break ; case SF_FORMAT_G723_24 : error = g72x_init (psf) ; psf->sf.seekable = SF_FALSE ; break ; case SF_FORMAT_G723_40 : error = g72x_init (psf) ; psf->sf.seekable = SF_FALSE ; break ; /* Lite remove end */ default : break ; } ; return error ; } /* au_open */ /*------------------------------------------------------------------------------ */ static int au_close (SF_PRIVATE *psf) { if (psf->file.mode == SFM_WRITE || psf->file.mode == SFM_RDWR) au_write_header (psf, SF_TRUE) ; return 0 ; } /* au_close */ static int au_write_header (SF_PRIVATE *psf, int calc_length) { sf_count_t current ; int encoding, datalength ; if (psf->pipeoffset > 0) return 0 ; current = psf_ftell (psf) ; if (calc_length) { psf->filelength = psf_get_filelen (psf) ; psf->datalength = psf->filelength - psf->dataoffset ; if (psf->dataend) psf->datalength -= psf->filelength - psf->dataend ; psf->sf.frames = psf->datalength / (psf->bytewidth * psf->sf.channels) ; } ; encoding = au_format_to_encoding (SF_CODEC (psf->sf.format)) ; if (! encoding) return (psf->error = SFE_BAD_OPEN_FORMAT) ; /* Reset the current header length to zero. */ psf->header [0] = 0 ; psf->headindex = 0 ; /* ** Only attempt to seek if we are not writng to a pipe. If we are ** writing to a pipe we shouldn't be here anyway. */ if (psf->is_pipe == SF_FALSE) psf_fseek (psf, 0, SEEK_SET) ; /* ** AU format files allow a datalength value of -1 if the datalength ** is not know at the time the header is written. ** Also use this value of -1 if the datalength > 2 gigabytes. */ if (psf->datalength < 0 || psf->datalength > 0x7FFFFFFF) datalength = -1 ; else datalength = (int) (psf->datalength & 0x7FFFFFFF) ; if (psf->endian == SF_ENDIAN_BIG) { psf_binheader_writef (psf, "Em4", DOTSND_MARKER, AU_DATA_OFFSET) ; psf_binheader_writef (psf, "E4444", datalength, encoding, psf->sf.samplerate, psf->sf.channels) ; } else if (psf->endian == SF_ENDIAN_LITTLE) { psf_binheader_writef (psf, "em4", DNSDOT_MARKER, AU_DATA_OFFSET) ; psf_binheader_writef (psf, "e4444", datalength, encoding, psf->sf.samplerate, psf->sf.channels) ; } else return (psf->error = SFE_BAD_OPEN_FORMAT) ; /* Header construction complete so write it out. */ psf_fwrite (psf->header, psf->headindex, 1, psf) ; if (psf->error) return psf->error ; psf->dataoffset = psf->headindex ; if (current > 0) psf_fseek (psf, current, SEEK_SET) ; return psf->error ; } /* au_write_header */ static int au_format_to_encoding (int format) { switch (format) { case SF_FORMAT_PCM_S8 : return AU_ENCODING_PCM_8 ; case SF_FORMAT_PCM_16 : return AU_ENCODING_PCM_16 ; case SF_FORMAT_PCM_24 : return AU_ENCODING_PCM_24 ; case SF_FORMAT_PCM_32 : return AU_ENCODING_PCM_32 ; case SF_FORMAT_FLOAT : return AU_ENCODING_FLOAT ; case SF_FORMAT_DOUBLE : return AU_ENCODING_DOUBLE ; case SF_FORMAT_ULAW : return AU_ENCODING_ULAW_8 ; case SF_FORMAT_ALAW : return AU_ENCODING_ALAW_8 ; case SF_FORMAT_G721_32 : return AU_ENCODING_ADPCM_G721_32 ; case SF_FORMAT_G723_24 : return AU_ENCODING_ADPCM_G723_24 ; case SF_FORMAT_G723_40 : return AU_ENCODING_ADPCM_G723_40 ; default : break ; } ; return 0 ; } /* au_format_to_encoding */ static int au_read_header (SF_PRIVATE *psf) { AU_FMT au_fmt ; int marker, dword ; memset (&au_fmt, 0, sizeof (au_fmt)) ; psf_binheader_readf (psf, "pm", 0, &marker) ; psf_log_printf (psf, "%M\n", marker) ; if (marker == DOTSND_MARKER) { psf->endian = SF_ENDIAN_BIG ; psf_binheader_readf (psf, "E44444", &(au_fmt.dataoffset), &(au_fmt.datasize), &(au_fmt.encoding), &(au_fmt.samplerate), &(au_fmt.channels)) ; } else if (marker == DNSDOT_MARKER) { psf->endian = SF_ENDIAN_LITTLE ; psf_binheader_readf (psf, "e44444", &(au_fmt.dataoffset), &(au_fmt.datasize), &(au_fmt.encoding), &(au_fmt.samplerate), &(au_fmt.channels)) ; } else return SFE_AU_NO_DOTSND ; psf_log_printf (psf, " Data Offset : %d\n", au_fmt.dataoffset) ; if (psf->fileoffset > 0 && au_fmt.datasize == -1) { psf_log_printf (psf, " Data Size : -1\n") ; return SFE_AU_EMBED_BAD_LEN ; } ; if (psf->fileoffset > 0) { psf->filelength = au_fmt.dataoffset + au_fmt.datasize ; psf_log_printf (psf, " Data Size : %d\n", au_fmt.datasize) ; } else if (au_fmt.datasize == -1 || au_fmt.dataoffset + au_fmt.datasize == psf->filelength) psf_log_printf (psf, " Data Size : %d\n", au_fmt.datasize) ; else if (au_fmt.dataoffset + au_fmt.datasize < psf->filelength) { psf->filelength = au_fmt.dataoffset + au_fmt.datasize ; psf_log_printf (psf, " Data Size : %d\n", au_fmt.datasize) ; } else { dword = psf->filelength - au_fmt.dataoffset ; psf_log_printf (psf, " Data Size : %d (should be %d)\n", au_fmt.datasize, dword) ; au_fmt.datasize = dword ; } ; psf->dataoffset = au_fmt.dataoffset ; psf->datalength = psf->filelength - psf->dataoffset ; if (psf_ftell (psf) < psf->dataoffset) psf_binheader_readf (psf, "j", psf->dataoffset - psf_ftell (psf)) ; psf->sf.samplerate = au_fmt.samplerate ; psf->sf.channels = au_fmt.channels ; /* Only fill in type major. */ if (psf->endian == SF_ENDIAN_BIG) psf->sf.format = SF_FORMAT_AU ; else if (psf->endian == SF_ENDIAN_LITTLE) psf->sf.format = SF_ENDIAN_LITTLE | SF_FORMAT_AU ; psf_log_printf (psf, " Encoding : %d => ", au_fmt.encoding) ; psf->sf.format = SF_ENDIAN (psf->sf.format) ; switch (au_fmt.encoding) { case AU_ENCODING_ULAW_8 : psf->sf.format |= SF_FORMAT_AU | SF_FORMAT_ULAW ; psf->bytewidth = 1 ; /* Before decoding */ psf_log_printf (psf, "8-bit ISDN u-law\n") ; break ; case AU_ENCODING_PCM_8 : psf->sf.format |= SF_FORMAT_AU | SF_FORMAT_PCM_S8 ; psf->bytewidth = 1 ; psf_log_printf (psf, "8-bit linear PCM\n") ; break ; case AU_ENCODING_PCM_16 : psf->sf.format |= SF_FORMAT_AU | SF_FORMAT_PCM_16 ; psf->bytewidth = 2 ; psf_log_printf (psf, "16-bit linear PCM\n") ; break ; case AU_ENCODING_PCM_24 : psf->sf.format |= SF_FORMAT_AU | SF_FORMAT_PCM_24 ; psf->bytewidth = 3 ; psf_log_printf (psf, "24-bit linear PCM\n") ; break ; case AU_ENCODING_PCM_32 : psf->sf.format |= SF_FORMAT_AU | SF_FORMAT_PCM_32 ; psf->bytewidth = 4 ; psf_log_printf (psf, "32-bit linear PCM\n") ; break ; case AU_ENCODING_FLOAT : psf->sf.format |= SF_FORMAT_AU | SF_FORMAT_FLOAT ; psf->bytewidth = 4 ; psf_log_printf (psf, "32-bit float\n") ; break ; case AU_ENCODING_DOUBLE : psf->sf.format |= SF_FORMAT_AU | SF_FORMAT_DOUBLE ; psf->bytewidth = 8 ; psf_log_printf (psf, "64-bit double precision float\n") ; break ; case AU_ENCODING_ALAW_8 : psf->sf.format |= SF_FORMAT_AU | SF_FORMAT_ALAW ; psf->bytewidth = 1 ; /* Before decoding */ psf_log_printf (psf, "8-bit ISDN A-law\n") ; break ; case AU_ENCODING_ADPCM_G721_32 : psf->sf.format |= SF_FORMAT_AU | SF_FORMAT_G721_32 ; psf->bytewidth = 0 ; psf_log_printf (psf, "G721 32kbs ADPCM\n") ; break ; case AU_ENCODING_ADPCM_G723_24 : psf->sf.format |= SF_FORMAT_AU | SF_FORMAT_G723_24 ; psf->bytewidth = 0 ; psf_log_printf (psf, "G723 24kbs ADPCM\n") ; break ; case AU_ENCODING_ADPCM_G723_40 : psf->sf.format |= SF_FORMAT_AU | SF_FORMAT_G723_40 ; psf->bytewidth = 0 ; psf_log_printf (psf, "G723 40kbs ADPCM\n") ; break ; case AU_ENCODING_ADPCM_G722 : psf_log_printf (psf, "G722 64 kbs ADPCM (unsupported)\n") ; break ; case AU_ENCODING_NEXT : psf_log_printf (psf, "Weird NeXT encoding format (unsupported)\n") ; break ; default : psf_log_printf (psf, "Unknown!!\n") ; break ; } ; psf_log_printf (psf, " Sample Rate : %d\n", au_fmt.samplerate) ; if (au_fmt.channels < 1) { psf_log_printf (psf, " Channels : %d **** should be >= 1\n", au_fmt.channels) ; return SFE_CHANNEL_COUNT_ZERO ; } else psf_log_printf (psf, " Channels : %d\n", au_fmt.channels) ; psf->blockwidth = psf->sf.channels * psf->bytewidth ; if (! psf->sf.frames && psf->blockwidth) psf->sf.frames = (psf->filelength - psf->dataoffset) / psf->blockwidth ; return 0 ; } /* au_read_header */