rf64.c
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上传日期:2022-01-05
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文件大小:21k
- /*
- ** Copyright (C) 2008-2009 Erik de Castro Lopo <erikd@mega-nerd.com>
- ** Copyright (C) 2009 Uli Franke <cls@nebadje.org>
- **
- ** 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.
- */
- /*
- ** This format documented at:
- ** http://www.sr.se/utveckling/tu/bwf/prog/RF_64v1_4.pdf
- **
- ** But this may be a better reference:
- ** http://www.ebu.ch/CMSimages/en/tec_doc_t3306-2007_tcm6-42570.pdf
- */
- #include "sfconfig.h"
- #include <stdio.h>
- #include <fcntl.h>
- #include <string.h>
- #include <ctype.h>
- #include "sndfile.h"
- #include "sfendian.h"
- #include "common.h"
- #include "wav_w64.h"
- /*------------------------------------------------------------------------------
- ** Macros to handle big/little endian issues.
- */
- #define RF64_MARKER MAKE_MARKER ('R', 'F', '6', '4')
- #define FFFF_MARKER MAKE_MARKER (0xff, 0xff, 0xff, 0xff)
- #define WAVE_MARKER MAKE_MARKER ('W', 'A', 'V', 'E')
- #define ds64_MARKER MAKE_MARKER ('d', 's', '6', '4')
- #define fmt_MARKER MAKE_MARKER ('f', 'm', 't', ' ')
- #define fact_MARKER MAKE_MARKER ('f', 'a', 'c', 't')
- #define data_MARKER MAKE_MARKER ('d', 'a', 't', 'a')
- #define bext_MARKER MAKE_MARKER ('b', 'e', 'x', 't')
- #define OggS_MARKER MAKE_MARKER ('O', 'g', 'g', 'S')
- #define wvpk_MARKER MAKE_MARKER ('w', 'v', 'p', 'k')
- /*------------------------------------------------------------------------------
- ** Typedefs.
- */
- /*------------------------------------------------------------------------------
- ** Private static functions.
- */
- static int rf64_read_header (SF_PRIVATE *psf, int *blockalign, int *framesperblock) ;
- static int rf64_write_header (SF_PRIVATE *psf, int calc_length) ;
- static int rf64_close (SF_PRIVATE *psf) ;
- static int rf64_command (SF_PRIVATE *psf, int command, void * UNUSED (data), int datasize) ;
- /*------------------------------------------------------------------------------
- ** Public function.
- */
- int
- rf64_open (SF_PRIVATE *psf)
- { WAV_PRIVATE *wpriv ;
- int subformat, error = 0 ;
- int blockalign, framesperblock ;
- if ((wpriv = calloc (1, sizeof (WAV_PRIVATE))) == NULL)
- return SFE_MALLOC_FAILED ;
- psf->container_data = wpriv ;
- wpriv->wavex_ambisonic = SF_AMBISONIC_NONE ;
- /* All RF64 files are little endian. */
- psf->endian = SF_ENDIAN_LITTLE ;
- if (psf->file.mode == SFM_READ || (psf->file.mode == SFM_RDWR && psf->filelength > 0))
- { if ((error = rf64_read_header (psf, &blockalign, &framesperblock)) != 0)
- return error ;
- } ;
- if ((psf->sf.format & SF_FORMAT_TYPEMASK) != SF_FORMAT_RF64)
- return SFE_BAD_OPEN_FORMAT ;
- subformat = psf->sf.format & SF_FORMAT_SUBMASK ;
- if (psf->file.mode == SFM_WRITE || psf->file.mode == SFM_RDWR)
- { if (psf->is_pipe)
- return SFE_NO_PIPE_WRITE ;
- psf->blockwidth = psf->bytewidth * psf->sf.channels ;
- if ((error = rf64_write_header (psf, SF_FALSE)))
- return error ;
- psf->write_header = rf64_write_header ;
- } ;
- psf->container_close = rf64_close ;
- psf->command = rf64_command ;
- switch (subformat)
- { case SF_FORMAT_PCM_U8 :
- case SF_FORMAT_PCM_16 :
- case SF_FORMAT_PCM_24 :
- case SF_FORMAT_PCM_32 :
- error = pcm_init (psf) ;
- break ;
- case SF_FORMAT_ULAW :
- error = ulaw_init (psf) ;
- break ;
- case SF_FORMAT_ALAW :
- error = alaw_init (psf) ;
- break ;
- /* Lite remove start */
- case SF_FORMAT_FLOAT :
- error = float32_init (psf) ;
- break ;
- case SF_FORMAT_DOUBLE :
- error = double64_init (psf) ;
- break ;
- /* Lite remove end */
- default : return SFE_UNIMPLEMENTED ;
- } ;
- return error ;
- } /* rf64_open */
- /*------------------------------------------------------------------------------
- */
- enum
- { HAVE_ds64 = 0x01,
- HAVE_fmt = 0x02,
- HAVE_bext = 0x04,
- HAVE_data = 0x08
- } ;
- #define HAVE_CHUNK(CHUNK) ((parsestage & CHUNK) != 0)
- static int
- rf64_read_header (SF_PRIVATE *psf, int *blockalign, int *framesperblock)
- { WAV_PRIVATE *wpriv ;
- WAV_FMT *wav_fmt ;
- sf_count_t riff_size = 0, sample_count = 0 ;
- unsigned int size32, parsestage = 0 ;
- int marker, marks [2], error, done = 0, format = 0 ;
- if ((wpriv = psf->container_data) == NULL)
- return SFE_INTERNAL ;
- wav_fmt = &wpriv->wav_fmt ;
- /* Set position to start of file to begin reading header. */
- psf_binheader_readf (psf, "pmmm", 0, &marker, marks, marks + 1) ;
- if (marker != RF64_MARKER || marks [0] != FFFF_MARKER || marks [1] != WAVE_MARKER)
- return SFE_RF64_NOT_RF64 ;
- psf_log_printf (psf, "%Mn %Mn", RF64_MARKER, WAVE_MARKER) ;
- while (! done)
- { psf_binheader_readf (psf, "em4", &marker, &size32) ;
- switch (marker)
- { case ds64_MARKER :
- psf_log_printf (psf, "%M : %un", marker, size32) ;
- /* Read ds64 sizes (3 8-byte words). */
- psf_binheader_readf (psf, "888", &riff_size, &psf->datalength, &sample_count) ;
- psf_log_printf (psf, " Riff size : %Dn Data size : %Dn Frames : %Dn",
- riff_size, psf->datalength, sample_count) ;
- /* Read table length. */
- psf_binheader_readf (psf, "4", &size32) ;
- psf_log_printf (psf, " Table length : %un", size32) ;
- /* Skip table for now. (this was "size32 + 4", why?) */
- psf_binheader_readf (psf, "j", size32) ;
- parsestage |= HAVE_ds64 ;
- break ;
- case fmt_MARKER:
- psf_log_printf (psf, "%M : %un", marker, size32) ;
- if ((error = wav_w64_read_fmt_chunk (psf, size32)) != 0)
- return error ;
- format = wav_fmt->format ;
- parsestage |= HAVE_fmt ;
- break ;
- case bext_MARKER :
- if ((error = wav_read_bext_chunk (psf, size32)) != 0)
- return error ;
- parsestage |= HAVE_bext ;
- break ;
- case data_MARKER :
- /* see wav for more sophisticated parsing -> implement state machine with parsestage */
- psf_log_printf (psf, "%M : %xn", marker, size32) ;
- /* Fetch data length only from data chunk when data chunk size is not set to -1 */
- if ( size32 != 0xFFFFFFFF )
- psf->datalength = size32 ;
- else if ( ! HAVE_CHUNK (HAVE_ds64))
- { /* Assuming the ds64 chunk comes always before the data chunk. */
- psf_log_printf (psf, " *** Data length not specified (-1 in data chunk and no ds64 chunk).") ;
- } ;
- psf->dataoffset = psf_ftell (psf) ;
- if (psf->dataoffset > 0)
- { if (size32 == 0 && riff_size == 8 && psf->filelength > 44)
- { psf_log_printf (psf, " *** Looks like a WAV file which wasn't closed properly. Fixing it.n") ;
- psf->datalength = psf->filelength - psf->dataoffset ;
- } ;
- if (psf->datalength > psf->filelength - psf->dataoffset)
- { psf_log_printf (psf, " data : %D (should be %D)n", psf->datalength, psf->filelength - psf->dataoffset) ;
- psf->datalength = psf->filelength - psf->dataoffset ;
- }
- else
- psf_log_printf (psf, " data : %Dn", psf->datalength) ;
- /* Only set dataend if there really is data at the end. */
- if (psf->datalength + psf->dataoffset < psf->filelength)
- psf->dataend = psf->datalength + psf->dataoffset ;
- if (! psf->sf.seekable || psf->dataoffset < 0)
- break ;
- /* Seek past data and continue reading header. */
- psf_fseek (psf, psf->datalength, SEEK_CUR) ;
- if (psf_ftell (psf) != psf->datalength + psf->dataoffset)
- psf_log_printf (psf, " *** psf_fseek past end error ***n") ;
- break ;
- } ;
- break ;
- default :
- if (isprint ((marker >> 24) & 0xFF) && isprint ((marker >> 16) & 0xFF)
- && isprint ((marker >> 8) & 0xFF) && isprint (marker & 0xFF))
- { psf_log_printf (psf, "*** %M : %d (unknown marker)n", marker, size32) ;
- if (size32 < 8)
- done = SF_TRUE ;
- psf_binheader_readf (psf, "j", size32) ;
- break ;
- } ;
- if (psf_ftell (psf) & 0x03)
- { psf_log_printf (psf, " Unknown chunk marker at position %d. Resynching.n", size32 - 4) ;
- psf_binheader_readf (psf, "j", -3) ;
- break ;
- } ;
- psf_log_printf (psf, "*** Unknown chunk marker (%X) at position %D. Exiting parser.n", marker, psf_ftell (psf) - 4) ;
- done = SF_TRUE ;
- break ;
- } ; /* switch (marker) */
- if (psf_ftell (psf) >= psf->filelength - SIGNED_SIZEOF (marker))
- { psf_log_printf (psf, "Endn") ;
- break ;
- } ;
- } ;
- if (psf->dataoffset <= 0)
- return SFE_WAV_NO_DATA ;
- /* WAVs can be little or big endian */
- psf->endian = psf->rwf_endian ;
- psf_fseek (psf, psf->dataoffset, SEEK_SET) ;
- if (psf->is_pipe == 0)
- { /*
- ** Check for 'wvpk' at the start of the DATA section. Not able to
- ** handle this.
- */
- psf_binheader_readf (psf, "4", &marker) ;
- if (marker == wvpk_MARKER || marker == OggS_MARKER)
- return SFE_WAV_WVPK_DATA ;
- } ;
- /* Seek to start of DATA section. */
- psf_fseek (psf, psf->dataoffset, SEEK_SET) ;
- if (psf->blockwidth)
- { if (psf->filelength - psf->dataoffset < psf->datalength)
- psf->sf.frames = (psf->filelength - psf->dataoffset) / psf->blockwidth ;
- else
- psf->sf.frames = psf->datalength / psf->blockwidth ;
- } ;
- switch (format)
- {
- case WAVE_FORMAT_EXTENSIBLE :
- /* with WAVE_FORMAT_EXTENSIBLE the psf->sf.format field is already set. We just have to set the major to rf64 */
- psf->sf.format = (psf->sf.format & ~SF_FORMAT_TYPEMASK ) | SF_FORMAT_RF64 ;
- if (psf->sf.format == (SF_FORMAT_WAVEX | SF_FORMAT_MS_ADPCM))
- { *blockalign = wav_fmt->msadpcm.blockalign ;
- *framesperblock = wav_fmt->msadpcm.samplesperblock ;
- } ;
- break ;
- case WAVE_FORMAT_PCM :
- psf->sf.format = SF_FORMAT_RF64 | u_bitwidth_to_subformat (psf->bytewidth * 8) ;
- break ;
- case WAVE_FORMAT_MULAW :
- case IBM_FORMAT_MULAW :
- psf->sf.format = (SF_FORMAT_RF64 | SF_FORMAT_ULAW) ;
- break ;
- case WAVE_FORMAT_ALAW :
- case IBM_FORMAT_ALAW :
- psf->sf.format = (SF_FORMAT_RF64 | SF_FORMAT_ALAW) ;
- break ;
- case WAVE_FORMAT_MS_ADPCM :
- psf->sf.format = (SF_FORMAT_RF64 | SF_FORMAT_MS_ADPCM) ;
- *blockalign = wav_fmt->msadpcm.blockalign ;
- *framesperblock = wav_fmt->msadpcm.samplesperblock ;
- break ;
- case WAVE_FORMAT_IMA_ADPCM :
- psf->sf.format = (SF_FORMAT_RF64 | SF_FORMAT_IMA_ADPCM) ;
- *blockalign = wav_fmt->ima.blockalign ;
- *framesperblock = wav_fmt->ima.samplesperblock ;
- break ;
- case WAVE_FORMAT_GSM610 :
- psf->sf.format = (SF_FORMAT_RF64 | SF_FORMAT_GSM610) ;
- break ;
- case WAVE_FORMAT_IEEE_FLOAT :
- psf->sf.format = SF_FORMAT_RF64 ;
- psf->sf.format |= (psf->bytewidth == 8) ? SF_FORMAT_DOUBLE : SF_FORMAT_FLOAT ;
- break ;
- case WAVE_FORMAT_G721_ADPCM :
- psf->sf.format = SF_FORMAT_RF64 | SF_FORMAT_G721_32 ;
- break ;
- default : return SFE_UNIMPLEMENTED ;
- } ;
- psf_log_printf (psf, " FORMAT : %xn", psf->sf.format) ;
- if (wpriv->fmt_is_broken)
- wav_w64_analyze (psf) ;
- /* Only set the format endian-ness if its non-standard big-endian. */
- if (psf->endian == SF_ENDIAN_BIG)
- psf->sf.format |= SF_ENDIAN_BIG ;
- return 0 ;
- } /* rf64_read_header */
- /* known WAVEFORMATEXTENSIBLE GUIDS */
- static const EXT_SUBFORMAT MSGUID_SUBTYPE_PCM =
- { 0x00000001, 0x0000, 0x0010, { 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 }
- } ;
- static const EXT_SUBFORMAT MSGUID_SUBTYPE_MS_ADPCM =
- { 0x00000002, 0x0000, 0x0010, { 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 }
- } ;
- static const EXT_SUBFORMAT MSGUID_SUBTYPE_IEEE_FLOAT =
- { 0x00000003, 0x0000, 0x0010, { 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 }
- } ;
- static const EXT_SUBFORMAT MSGUID_SUBTYPE_ALAW =
- { 0x00000006, 0x0000, 0x0010, { 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 }
- } ;
- static const EXT_SUBFORMAT MSGUID_SUBTYPE_MULAW =
- { 0x00000007, 0x0000, 0x0010, { 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 }
- } ;
- /*
- ** the next two are from
- ** http://dream.cs.bath.ac.uk/researchdev/wave-ex/bformat.html
- */
- static const EXT_SUBFORMAT MSGUID_SUBTYPE_AMBISONIC_B_FORMAT_PCM =
- { 0x00000001, 0x0721, 0x11d3, { 0x86, 0x44, 0xC8, 0xC1, 0xCA, 0x00, 0x00, 0x00 }
- } ;
- static const EXT_SUBFORMAT MSGUID_SUBTYPE_AMBISONIC_B_FORMAT_IEEE_FLOAT =
- { 0x00000003, 0x0721, 0x11d3, { 0x86, 0x44, 0xC8, 0xC1, 0xCA, 0x00, 0x00, 0x00 }
- } ;
- static int
- wavex_write_fmt_chunk (SF_PRIVATE *psf)
- { WAV_PRIVATE *wpriv ;
- int subformat, fmt_size, add_fact_chunk = 0 ;
- if ((wpriv = psf->container_data) == NULL)
- return SFE_INTERNAL ;
- subformat = psf->sf.format & SF_FORMAT_SUBMASK ;
- /* initial section (same for all, it appears) */
- switch (subformat)
- { case SF_FORMAT_PCM_U8 :
- case SF_FORMAT_PCM_16 :
- case SF_FORMAT_PCM_24 :
- case SF_FORMAT_PCM_32 :
- case SF_FORMAT_FLOAT :
- case SF_FORMAT_DOUBLE :
- case SF_FORMAT_ULAW :
- case SF_FORMAT_ALAW :
- fmt_size = 2 + 2 + 4 + 4 + 2 + 2 + 2 + 2 + 4 + 4 + 2 + 2 + 8 ;
- /* fmt : format, channels, samplerate */
- psf_binheader_writef (psf, "4224", fmt_size, WAVE_FORMAT_EXTENSIBLE, psf->sf.channels, psf->sf.samplerate) ;
- /* fmt : bytespersec */
- psf_binheader_writef (psf, "4", psf->sf.samplerate * psf->bytewidth * psf->sf.channels) ;
- /* fmt : blockalign, bitwidth */
- psf_binheader_writef (psf, "22", psf->bytewidth * psf->sf.channels, psf->bytewidth * 8) ;
- /* cbSize 22 is sizeof (WAVEFORMATEXTENSIBLE) - sizeof (WAVEFORMATEX) */
- psf_binheader_writef (psf, "2", 22) ;
- /* wValidBitsPerSample, for our use same as bitwidth as we use it fully */
- psf_binheader_writef (psf, "2", psf->bytewidth * 8) ;
- /* For an Ambisonic file set the channel mask to zero.
- ** Otherwise use a default based on the channel count.
- */
- if (wpriv->wavex_ambisonic != SF_AMBISONIC_NONE)
- psf_binheader_writef (psf, "4", 0) ;
- else if (wpriv->wavex_channelmask != 0)
- psf_binheader_writef (psf, "4", wpriv->wavex_channelmask) ;
- else
- { /*
- ** Ok some liberty is taken here to use the most commonly used channel masks
- ** instead of "no mapping". If you really want to use "no mapping" for 8 channels and less
- ** please don't use wavex. (otherwise we'll have to create a new SF_COMMAND)
- */
- switch (psf->sf.channels)
- { case 1 : /* center channel mono */
- psf_binheader_writef (psf, "4", 0x4) ;
- break ;
- case 2 : /* front left and right */
- psf_binheader_writef (psf, "4", 0x1 | 0x2) ;
- break ;
- case 4 : /* Quad */
- psf_binheader_writef (psf, "4", 0x1 | 0x2 | 0x10 | 0x20) ;
- break ;
- case 6 : /* 5.1 */
- psf_binheader_writef (psf, "4", 0x1 | 0x2 | 0x4 | 0x8 | 0x10 | 0x20) ;
- break ;
- case 8 : /* 7.1 */
- psf_binheader_writef (psf, "4", 0x1 | 0x2 | 0x4 | 0x8 | 0x10 | 0x20 | 0x40 | 0x80) ;
- break ;
- default : /* 0 when in doubt , use direct out, ie NO mapping*/
- psf_binheader_writef (psf, "4", 0x0) ;
- break ;
- } ;
- } ;
- break ;
- case SF_FORMAT_MS_ADPCM : /* Todo, GUID exists might have different header as per wav_write_header */
- default :
- return SFE_UNIMPLEMENTED ;
- } ;
- /* GUID section, different for each */
- switch (subformat)
- { case SF_FORMAT_PCM_U8 :
- case SF_FORMAT_PCM_16 :
- case SF_FORMAT_PCM_24 :
- case SF_FORMAT_PCM_32 :
- wavex_write_guid (psf, wpriv->wavex_ambisonic == SF_AMBISONIC_NONE ?
- &MSGUID_SUBTYPE_PCM : &MSGUID_SUBTYPE_AMBISONIC_B_FORMAT_PCM) ;
- break ;
- case SF_FORMAT_FLOAT :
- case SF_FORMAT_DOUBLE :
- wavex_write_guid (psf, wpriv->wavex_ambisonic == SF_AMBISONIC_NONE ?
- &MSGUID_SUBTYPE_IEEE_FLOAT : &MSGUID_SUBTYPE_AMBISONIC_B_FORMAT_IEEE_FLOAT) ;
- break ;
- case SF_FORMAT_ULAW :
- wavex_write_guid (psf, &MSGUID_SUBTYPE_MULAW) ;
- break ;
- case SF_FORMAT_ALAW :
- wavex_write_guid (psf, &MSGUID_SUBTYPE_ALAW) ;
- break ;
- #if 0
- /* This is dead code due to return in previous switch statement. */
- case SF_FORMAT_MS_ADPCM : /* todo, GUID exists */
- wavex_write_guid (psf, &MSGUID_SUBTYPE_MS_ADPCM) ;
- break ;
- return SFE_UNIMPLEMENTED ;
- #endif
- default : return SFE_UNIMPLEMENTED ;
- } ;
- if (add_fact_chunk)
- psf_binheader_writef (psf, "tm48", fact_MARKER, 4, psf->sf.frames) ;
- return 0 ;
- } /* wavex_write_fmt_chunk */
- static int
- rf64_write_header (SF_PRIVATE *psf, int calc_length)
- { sf_count_t current ;
- int error = 0, has_data = SF_FALSE ;
- current = psf_ftell (psf) ;
- if (psf->dataoffset > 0 && current > psf->dataoffset)
- has_data = SF_TRUE ;
- if (calc_length)
- { psf->filelength = psf_get_filelen (psf) ;
- psf->datalength = psf->filelength - psf->dataoffset ;
- if (psf->dataend)
- psf->datalength -= psf->filelength - psf->dataend ;
- if (psf->bytewidth > 0)
- psf->sf.frames = psf->datalength / (psf->bytewidth * psf->sf.channels) ;
- } ;
- /* Reset the current header length to zero. */
- psf->header [0] = 0 ;
- psf->headindex = 0 ;
- psf_fseek (psf, 0, SEEK_SET) ;
- psf_binheader_writef (psf, "em4m", RF64_MARKER, 0xffffffff, WAVE_MARKER) ;
- /* Currently no table. */
- psf_binheader_writef (psf, "m48884", ds64_MARKER, 32, psf->filelength, psf->datalength, psf->sf.frames, 0) ;
- /* WAVE and 'fmt ' markers. */
- psf_binheader_writef (psf, "m", fmt_MARKER) ;
- /* Write the 'fmt ' chunk. */
- switch (psf->sf.format & SF_FORMAT_TYPEMASK)
- { case SF_FORMAT_WAV :
- psf_log_printf (psf, "ooops SF_FORMAT_WAVn") ;
- return SFE_UNIMPLEMENTED ;
- break ;
- case SF_FORMAT_WAVEX :
- case SF_FORMAT_RF64 :
- if ((error = wavex_write_fmt_chunk (psf)) != 0)
- return error ;
- break ;
- default :
- return SFE_UNIMPLEMENTED ;
- } ;
- if (psf->broadcast_var != NULL)
- wav_write_bext_chunk (psf) ;
- #if 0
- /* The LIST/INFO chunk. */
- if (psf->str_flags & SF_STR_LOCATE_START)
- wav_write_strings (psf, SF_STR_LOCATE_START) ;
- if (psf->peak_info != NULL && psf->peak_info->peak_loc == SF_PEAK_START)
- { psf_binheader_writef (psf, "m4", PEAK_MARKER, WAV_PEAK_CHUNK_SIZE (psf->sf.channels)) ;
- psf_binheader_writef (psf, "44", 1, time (NULL)) ;
- for (k = 0 ; k < psf->sf.channels ; k++)
- psf_binheader_writef (psf, "ft8", (float) psf->peak_info->peaks [k].value, psf->peak_info->peaks [k].position) ;
- } ;
- // if (psf->broadcast_info != NULL)
- // wav_write_bext_chunk (psf) ;
- if (psf->instrument != NULL)
- { int tmp ;
- double dtune = (double) (0x40000000) / 25.0 ;
- psf_binheader_writef (psf, "m4", smpl_MARKER, 9 * 4 + psf->instrument->loop_count * 6 * 4) ;
- psf_binheader_writef (psf, "44", 0, 0) ; /* Manufacturer zero is everyone */
- tmp = (int) (1.0e9 / psf->sf.samplerate) ; /* Sample period in nano seconds */
- psf_binheader_writef (psf, "44", tmp, psf->instrument->basenote) ;
- tmp = (unsigned int) (psf->instrument->detune * dtune + 0.5) ;
- psf_binheader_writef (psf, "4", tmp) ;
- psf_binheader_writef (psf, "44", 0, 0) ; /* SMTPE format */
- psf_binheader_writef (psf, "44", psf->instrument->loop_count, 0) ;
- for (tmp = 0 ; tmp < psf->instrument->loop_count ; tmp++)
- { int type ;
- type = psf->instrument->loops [tmp].mode ;
- type = (type == SF_LOOP_FORWARD ? 0 : type==SF_LOOP_BACKWARD ? 2 : type == SF_LOOP_ALTERNATING ? 1 : 32) ;
- psf_binheader_writef (psf, "44", tmp, type) ;
- psf_binheader_writef (psf, "44", psf->instrument->loops [tmp].start, psf->instrument->loops [tmp].end) ;
- psf_binheader_writef (psf, "44", 0, psf->instrument->loops [tmp].count) ;
- } ;
- } ;
- if (psf->headindex + 8 < psf->dataoffset)
- { /* Add PAD data if necessary. */
- k = psf->dataoffset - 16 - psf->headindex ;
- psf_binheader_writef (psf, "m4z", PAD_MARKER, k, make_size_t (k)) ;
- } ;
- #endif
- psf_binheader_writef (psf, "m4", data_MARKER, 0xffffffff) ;
- psf_fwrite (psf->header, psf->headindex, 1, psf) ;
- if (psf->error)
- return psf->error ;
- if (has_data && psf->dataoffset != psf->headindex)
- { printf ("Oooops : has_data && psf->dataoffset != psf->headindexn") ;
- return psf->error = SFE_INTERNAL ;
- } ;
- psf->dataoffset = psf->headindex ;
- if (! has_data)
- psf_fseek (psf, psf->dataoffset, SEEK_SET) ;
- else if (current > 0)
- psf_fseek (psf, current, SEEK_SET) ;
- return psf->error ;
- } /* rf64_write_header */
- static int
- rf64_close (SF_PRIVATE *psf)
- {
- if (psf->file.mode == SFM_WRITE || psf->file.mode == SFM_RDWR)
- { // rf64_write_tailer (psf) ;
- psf->write_header (psf, SF_TRUE) ;
- } ;
- return 0 ;
- } /* rf64_close */
- static int
- rf64_command (SF_PRIVATE *psf, int command, void * UNUSED (data), int datasize)
- { WAV_PRIVATE *wpriv ;
- if ((wpriv = psf->container_data) == NULL)
- return SFE_INTERNAL ;
- switch (command)
- { case SFC_WAVEX_SET_AMBISONIC :
- if ((SF_CONTAINER (psf->sf.format)) == SF_FORMAT_WAVEX)
- { if (datasize == SF_AMBISONIC_NONE)
- wpriv->wavex_ambisonic = SF_AMBISONIC_NONE ;
- else if (datasize == SF_AMBISONIC_B_FORMAT)
- wpriv->wavex_ambisonic = SF_AMBISONIC_B_FORMAT ;
- else
- return 0 ;
- } ;
- return wpriv->wavex_ambisonic ;
- case SFC_WAVEX_GET_AMBISONIC :
- return wpriv->wavex_ambisonic ;
- case SFC_SET_CHANNEL_MAP_INFO :
- wpriv->wavex_channelmask = wavex_gen_channel_mask (psf->channel_map, psf->sf.channels) ;
- return (wpriv->wavex_channelmask != 0) ;
- default :
- break ;
- } ;
- return 0 ;
- } /* rf64_command */