/* ** Copyright (C) 1999-2017 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 #include #include "sndfile.h" #include "sfendian.h" #include "common.h" /*------------------------------------------------------------------------------ ** Macros to handle big/little endian issues. */ #define FAP_MARKER (MAKE_MARKER ('f', 'a', 'p', ' ')) #define PAF_MARKER (MAKE_MARKER (' ', 'p', 'a', 'f')) /*------------------------------------------------------------------------------ ** Other defines. */ #define PAF_HEADER_LENGTH 2048 #define PAF24_SAMPLES_PER_BLOCK 10 #define PAF24_BLOCK_SIZE 32 /*------------------------------------------------------------------------------ ** Typedefs. */ typedef struct { int version ; int endianness ; int samplerate ; int format ; int channels ; int source ; } PAF_FMT ; typedef struct { int max_blocks, channels, blocksize ; int read_block, write_block, read_count, write_count ; sf_count_t sample_count ; int *samples ; int *block ; int data [] ; /* ISO C99 struct flexible array. */ } PAF24_PRIVATE ; /*------------------------------------------------------------------------------ ** Private static functions. */ static int paf24_init (SF_PRIVATE *psf) ; static int paf_read_header (SF_PRIVATE *psf) ; static int paf_write_header (SF_PRIVATE *psf, int calc_length) ; static sf_count_t paf24_read_s (SF_PRIVATE *psf, short *ptr, sf_count_t len) ; static sf_count_t paf24_read_i (SF_PRIVATE *psf, int *ptr, sf_count_t len) ; static sf_count_t paf24_read_f (SF_PRIVATE *psf, float *ptr, sf_count_t len) ; static sf_count_t paf24_read_d (SF_PRIVATE *psf, double *ptr, sf_count_t len) ; static sf_count_t paf24_write_s (SF_PRIVATE *psf, const short *ptr, sf_count_t len) ; static sf_count_t paf24_write_i (SF_PRIVATE *psf, const int *ptr, sf_count_t len) ; static sf_count_t paf24_write_f (SF_PRIVATE *psf, const float *ptr, sf_count_t len) ; static sf_count_t paf24_write_d (SF_PRIVATE *psf, const double *ptr, sf_count_t len) ; static sf_count_t paf24_seek (SF_PRIVATE *psf, int mode, sf_count_t offset) ; enum { PAF_PCM_16 = 0, PAF_PCM_24 = 1, PAF_PCM_S8 = 2 } ; /*------------------------------------------------------------------------------ ** Public function. */ int paf_open (SF_PRIVATE *psf) { int subformat, error, endian ; psf->dataoffset = PAF_HEADER_LENGTH ; if (psf->file.mode == SFM_READ || (psf->file.mode == SFM_RDWR && psf->filelength > 0)) { if ((error = paf_read_header (psf))) return error ; } ; subformat = SF_CODEC (psf->sf.format) ; if (psf->file.mode == SFM_WRITE || psf->file.mode == SFM_RDWR) { if ((SF_CONTAINER (psf->sf.format)) != SF_FORMAT_PAF) return SFE_BAD_OPEN_FORMAT ; endian = SF_ENDIAN (psf->sf.format) ; /* PAF is by default big endian. */ psf->endian = SF_ENDIAN_BIG ; if (endian == SF_ENDIAN_LITTLE || (CPU_IS_LITTLE_ENDIAN && (endian == SF_ENDIAN_CPU))) psf->endian = SF_ENDIAN_LITTLE ; if ((error = paf_write_header (psf, SF_FALSE))) return error ; psf->write_header = paf_write_header ; } ; switch (subformat) { case SF_FORMAT_PCM_S8 : psf->bytewidth = 1 ; error = pcm_init (psf) ; break ; case SF_FORMAT_PCM_16 : psf->bytewidth = 2 ; error = pcm_init (psf) ; break ; case SF_FORMAT_PCM_24 : /* No bytewidth because of whacky 24 bit encoding. */ error = paf24_init (psf) ; break ; default : return SFE_PAF_UNKNOWN_FORMAT ; } ; return error ; } /* paf_open */ /*------------------------------------------------------------------------------ */ static int paf_read_header (SF_PRIVATE *psf) { PAF_FMT paf_fmt ; int marker ; if (psf->filelength < PAF_HEADER_LENGTH) return SFE_PAF_SHORT_HEADER ; memset (&paf_fmt, 0, sizeof (paf_fmt)) ; psf_binheader_readf (psf, "pm", 0, &marker) ; psf_log_printf (psf, "Signature : '%M'\n", marker) ; if (marker == PAF_MARKER) { psf_binheader_readf (psf, "E444444", &(paf_fmt.version), &(paf_fmt.endianness), &(paf_fmt.samplerate), &(paf_fmt.format), &(paf_fmt.channels), &(paf_fmt.source)) ; } else if (marker == FAP_MARKER) { psf_binheader_readf (psf, "e444444", &(paf_fmt.version), &(paf_fmt.endianness), &(paf_fmt.samplerate), &(paf_fmt.format), &(paf_fmt.channels), &(paf_fmt.source)) ; } else return SFE_PAF_NO_MARKER ; psf_log_printf (psf, "Version : %d\n", paf_fmt.version) ; if (paf_fmt.version != 0) { psf_log_printf (psf, "*** Bad version number. should be zero.\n") ; return SFE_PAF_VERSION ; } ; psf_log_printf (psf, "Sample Rate : %d\n", paf_fmt.samplerate) ; psf_log_printf (psf, "Channels : %d\n", paf_fmt.channels) ; psf_log_printf (psf, "Endianness : %d => ", paf_fmt.endianness) ; if (paf_fmt.endianness) { psf_log_printf (psf, "Little\n", paf_fmt.endianness) ; psf->endian = SF_ENDIAN_LITTLE ; } else { psf_log_printf (psf, "Big\n", paf_fmt.endianness) ; psf->endian = SF_ENDIAN_BIG ; } ; if (paf_fmt.channels < 1 || paf_fmt.channels > SF_MAX_CHANNELS) return SFE_PAF_BAD_CHANNELS ; psf->datalength = psf->filelength - psf->dataoffset ; psf_binheader_readf (psf, "p", (int) psf->dataoffset) ; psf->sf.samplerate = paf_fmt.samplerate ; psf->sf.channels = paf_fmt.channels ; /* Only fill in type major. */ psf->sf.format = SF_FORMAT_PAF ; psf_log_printf (psf, "Format : %d => ", paf_fmt.format) ; /* PAF is by default big endian. */ psf->sf.format |= paf_fmt.endianness ? SF_ENDIAN_LITTLE : SF_ENDIAN_BIG ; switch (paf_fmt.format) { case PAF_PCM_S8 : psf_log_printf (psf, "8 bit linear PCM\n") ; psf->bytewidth = 1 ; psf->sf.format |= SF_FORMAT_PCM_S8 ; psf->blockwidth = psf->bytewidth * psf->sf.channels ; psf->sf.frames = psf->datalength / psf->blockwidth ; break ; case PAF_PCM_16 : psf_log_printf (psf, "16 bit linear PCM\n") ; psf->bytewidth = 2 ; psf->sf.format |= SF_FORMAT_PCM_16 ; psf->blockwidth = psf->bytewidth * psf->sf.channels ; psf->sf.frames = psf->datalength / psf->blockwidth ; break ; case PAF_PCM_24 : psf_log_printf (psf, "24 bit linear PCM\n") ; psf->bytewidth = 3 ; psf->sf.format |= SF_FORMAT_PCM_24 ; psf->blockwidth = 0 ; psf->sf.frames = PAF24_SAMPLES_PER_BLOCK * psf->datalength / (PAF24_BLOCK_SIZE * psf->sf.channels) ; break ; default : psf_log_printf (psf, "Unknown\n") ; return SFE_PAF_UNKNOWN_FORMAT ; break ; } ; psf_log_printf (psf, "Source : %d => ", paf_fmt.source) ; switch (paf_fmt.source) { case 1 : psf_log_printf (psf, "Analog Recording\n") ; break ; case 2 : psf_log_printf (psf, "Digital Transfer\n") ; break ; case 3 : psf_log_printf (psf, "Multi-track Mixdown\n") ; break ; case 5 : psf_log_printf (psf, "Audio Resulting From DSP Processing\n") ; break ; default : psf_log_printf (psf, "Unknown\n") ; break ; } ; return 0 ; } /* paf_read_header */ static int paf_write_header (SF_PRIVATE *psf, int UNUSED (calc_length)) { int paf_format ; /* PAF header already written so no need to re-write. */ if (psf_ftell (psf) >= PAF_HEADER_LENGTH) return 0 ; psf->dataoffset = PAF_HEADER_LENGTH ; switch (SF_CODEC (psf->sf.format)) { case SF_FORMAT_PCM_S8 : paf_format = PAF_PCM_S8 ; break ; case SF_FORMAT_PCM_16 : paf_format = PAF_PCM_16 ; break ; case SF_FORMAT_PCM_24 : paf_format = PAF_PCM_24 ; break ; default : return SFE_PAF_UNKNOWN_FORMAT ; } ; /* Reset the current header length to zero. */ psf->header.ptr [0] = 0 ; psf->header.indx = 0 ; if (psf->endian == SF_ENDIAN_BIG) { /* Marker, version, endianness, samplerate */ psf_binheader_writef (psf, "Em444", BHWm (PAF_MARKER), BHW4 (0), BHW4 (0), BHW4 (psf->sf.samplerate)) ; /* format, channels, source */ psf_binheader_writef (psf, "E444", BHW4 (paf_format), BHW4 (psf->sf.channels), BHW4 (0)) ; } else if (psf->endian == SF_ENDIAN_LITTLE) { /* Marker, version, endianness, samplerate */ psf_binheader_writef (psf, "em444", BHWm (FAP_MARKER), BHW4 (0), BHW4 (1), BHW4 (psf->sf.samplerate)) ; /* format, channels, source */ psf_binheader_writef (psf, "e444", BHW4 (paf_format), BHW4 (psf->sf.channels), BHW4 (0)) ; } ; /* Zero fill to dataoffset. */ psf_binheader_writef (psf, "z", BHWz ((size_t) (psf->dataoffset - psf->header.indx))) ; psf_fwrite (psf->header.ptr, psf->header.indx, 1, psf) ; return psf->error ; } /* paf_write_header */ /*=============================================================================== ** 24 bit PAF files have a really weird encoding. ** For a mono file, 10 samples (each being 3 bytes) are packed into a 32 byte ** block. The 8 ints in this 32 byte block are then endian swapped (as ints) ** if necessary before being written to disk. ** For a stereo file, blocks of 10 samples from the same channel are encoded ** into 32 bytes as for the mono case. The 32 byte blocks are then interleaved ** on disk. ** Reading has to reverse the above process :-). ** Weird!!! ** ** The code below attempts to gain efficiency while maintaining readability. */ static int paf24_read_block (SF_PRIVATE *psf, PAF24_PRIVATE *ppaf24) ; static int paf24_write_block (SF_PRIVATE *psf, PAF24_PRIVATE *ppaf24) ; static int paf24_close (SF_PRIVATE *psf) ; static int paf24_init (SF_PRIVATE *psf) { PAF24_PRIVATE *ppaf24 ; int paf24size ; paf24size = sizeof (PAF24_PRIVATE) + psf->sf.channels * (PAF24_BLOCK_SIZE + PAF24_SAMPLES_PER_BLOCK * sizeof (int)) ; /* ** Not exatly sure why this needs to be here but the tests ** fail without it. */ psf->last_op = 0 ; if (! (psf->codec_data = calloc (1, paf24size))) return SFE_MALLOC_FAILED ; ppaf24 = (PAF24_PRIVATE*) psf->codec_data ; ppaf24->channels = psf->sf.channels ; ppaf24->samples = ppaf24->data ; ppaf24->block = ppaf24->data + PAF24_SAMPLES_PER_BLOCK * ppaf24->channels ; ppaf24->blocksize = PAF24_BLOCK_SIZE * ppaf24->channels ; if (psf->file.mode == SFM_READ || psf->file.mode == SFM_RDWR) { paf24_read_block (psf, ppaf24) ; /* Read first block. */ psf->read_short = paf24_read_s ; psf->read_int = paf24_read_i ; psf->read_float = paf24_read_f ; psf->read_double = paf24_read_d ; } ; if (psf->file.mode == SFM_WRITE || psf->file.mode == SFM_RDWR) { psf->write_short = paf24_write_s ; psf->write_int = paf24_write_i ; psf->write_float = paf24_write_f ; psf->write_double = paf24_write_d ; } ; psf->seek = paf24_seek ; psf->container_close = paf24_close ; psf->filelength = psf_get_filelen (psf) ; psf->datalength = psf->filelength - psf->dataoffset ; if (psf->datalength % PAF24_BLOCK_SIZE) { if (psf->file.mode == SFM_READ) psf_log_printf (psf, "*** Warning : file seems to be truncated.\n") ; ppaf24->max_blocks = psf->datalength / ppaf24->blocksize + 1 ; } else ppaf24->max_blocks = psf->datalength / ppaf24->blocksize ; ppaf24->read_block = 0 ; if (psf->file.mode == SFM_RDWR) ppaf24->write_block = ppaf24->max_blocks ; else ppaf24->write_block = 0 ; psf->sf.frames = PAF24_SAMPLES_PER_BLOCK * ppaf24->max_blocks ; ppaf24->sample_count = psf->sf.frames ; return 0 ; } /* paf24_init */ static sf_count_t paf24_seek (SF_PRIVATE *psf, int mode, sf_count_t offset) { PAF24_PRIVATE *ppaf24 ; int newblock, newsample ; if (psf->codec_data == NULL) { psf->error = SFE_INTERNAL ; return PSF_SEEK_ERROR ; } ; ppaf24 = (PAF24_PRIVATE*) psf->codec_data ; if (mode == SFM_READ && ppaf24->write_count > 0) paf24_write_block (psf, ppaf24) ; newblock = offset / PAF24_SAMPLES_PER_BLOCK ; newsample = offset % PAF24_SAMPLES_PER_BLOCK ; switch (mode) { case SFM_READ : if (psf->last_op == SFM_WRITE && ppaf24->write_count) paf24_write_block (psf, ppaf24) ; psf_fseek (psf, psf->dataoffset + newblock * ppaf24->blocksize, SEEK_SET) ; ppaf24->read_block = newblock ; paf24_read_block (psf, ppaf24) ; ppaf24->read_count = newsample ; break ; case SFM_WRITE : if (offset > ppaf24->sample_count) { psf->error = SFE_BAD_SEEK ; return PSF_SEEK_ERROR ; } ; if (psf->last_op == SFM_WRITE && ppaf24->write_count) paf24_write_block (psf, ppaf24) ; psf_fseek (psf, psf->dataoffset + newblock * ppaf24->blocksize, SEEK_SET) ; ppaf24->write_block = newblock ; paf24_read_block (psf, ppaf24) ; ppaf24->write_count = newsample ; break ; default : psf->error = SFE_BAD_SEEK ; return PSF_SEEK_ERROR ; } ; return newblock * PAF24_SAMPLES_PER_BLOCK + newsample ; } /* paf24_seek */ static int paf24_close (SF_PRIVATE *psf) { PAF24_PRIVATE *ppaf24 ; if (psf->codec_data == NULL) return 0 ; ppaf24 = (PAF24_PRIVATE*) psf->codec_data ; if (psf->file.mode == SFM_WRITE || psf->file.mode == SFM_RDWR) { if (ppaf24->write_count > 0) paf24_write_block (psf, ppaf24) ; } ; return 0 ; } /* paf24_close */ /*--------------------------------------------------------------------------- */ static int paf24_read_block (SF_PRIVATE *psf, PAF24_PRIVATE *ppaf24) { int k, channel ; unsigned char *cptr ; ppaf24->read_block ++ ; ppaf24->read_count = 0 ; if (ppaf24->read_block * PAF24_SAMPLES_PER_BLOCK > ppaf24->sample_count) { memset (ppaf24->samples, 0, PAF24_SAMPLES_PER_BLOCK * ppaf24->channels) ; return 1 ; } ; /* Read the block. */ if ((k = psf_fread (ppaf24->block, 1, ppaf24->blocksize, psf)) != ppaf24->blocksize) psf_log_printf (psf, "*** Warning : short read (%d != %d).\n", k, ppaf24->blocksize) ; /* Do endian swapping if necessary. */ if ((CPU_IS_BIG_ENDIAN && psf->endian == SF_ENDIAN_LITTLE) || (CPU_IS_LITTLE_ENDIAN && psf->endian == SF_ENDIAN_BIG)) endswap_int_array (ppaf24->block, 8 * ppaf24->channels) ; /* Unpack block. */ for (k = 0 ; k < PAF24_SAMPLES_PER_BLOCK * ppaf24->channels ; k++) { channel = k % ppaf24->channels ; cptr = ((unsigned char *) ppaf24->block) + PAF24_BLOCK_SIZE * channel + 3 * (k / ppaf24->channels) ; ppaf24->samples [k] = (cptr [0] << 8) | (cptr [1] << 16) | (((unsigned) cptr [2]) << 24) ; } ; return 1 ; } /* paf24_read_block */ static int paf24_read (SF_PRIVATE *psf, PAF24_PRIVATE *ppaf24, int *ptr, int len) { int count, total = 0 ; while (total < len) { if (ppaf24->read_block * PAF24_SAMPLES_PER_BLOCK >= ppaf24->sample_count) { memset (&(ptr [total]), 0, (len - total) * sizeof (int)) ; return total ; } ; if (ppaf24->read_count >= PAF24_SAMPLES_PER_BLOCK) paf24_read_block (psf, ppaf24) ; count = (PAF24_SAMPLES_PER_BLOCK - ppaf24->read_count) * ppaf24->channels ; count = (len - total > count) ? count : len - total ; memcpy (&(ptr [total]), &(ppaf24->samples [ppaf24->read_count * ppaf24->channels]), count * sizeof (int)) ; total += count ; ppaf24->read_count += count / ppaf24->channels ; } ; return total ; } /* paf24_read */ static sf_count_t paf24_read_s (SF_PRIVATE *psf, short *ptr, sf_count_t len) { BUF_UNION ubuf ; PAF24_PRIVATE *ppaf24 ; int *iptr ; int k, bufferlen, readcount, count ; sf_count_t total = 0 ; if (psf->codec_data == NULL) return 0 ; ppaf24 = (PAF24_PRIVATE*) psf->codec_data ; iptr = ubuf.ibuf ; bufferlen = ARRAY_LEN (ubuf.ibuf) ; while (len > 0) { readcount = (len >= bufferlen) ? bufferlen : len ; count = paf24_read (psf, ppaf24, iptr, readcount) ; for (k = 0 ; k < readcount ; k++) ptr [total + k] = iptr [k] >> 16 ; total += count ; len -= readcount ; } ; return total ; } /* paf24_read_s */ static sf_count_t paf24_read_i (SF_PRIVATE *psf, int *ptr, sf_count_t len) { PAF24_PRIVATE *ppaf24 ; int total ; if (psf->codec_data == NULL) return 0 ; ppaf24 = (PAF24_PRIVATE*) psf->codec_data ; total = paf24_read (psf, ppaf24, ptr, len) ; return total ; } /* paf24_read_i */ static sf_count_t paf24_read_f (SF_PRIVATE *psf, float *ptr, sf_count_t len) { BUF_UNION ubuf ; PAF24_PRIVATE *ppaf24 ; int *iptr ; int k, bufferlen, readcount, count ; sf_count_t total = 0 ; float normfact ; if (psf->codec_data == NULL) return 0 ; ppaf24 = (PAF24_PRIVATE*) psf->codec_data ; normfact = (psf->norm_float == SF_TRUE) ? (1.0 / 0x80000000) : (1.0 / 0x100) ; iptr = ubuf.ibuf ; bufferlen = ARRAY_LEN (ubuf.ibuf) ; while (len > 0) { readcount = (len >= bufferlen) ? bufferlen : len ; count = paf24_read (psf, ppaf24, iptr, readcount) ; for (k = 0 ; k < readcount ; k++) ptr [total + k] = normfact * iptr [k] ; total += count ; len -= readcount ; } ; return total ; } /* paf24_read_f */ static sf_count_t paf24_read_d (SF_PRIVATE *psf, double *ptr, sf_count_t len) { BUF_UNION ubuf ; PAF24_PRIVATE *ppaf24 ; int *iptr ; int k, bufferlen, readcount, count ; sf_count_t total = 0 ; double normfact ; if (psf->codec_data == NULL) return 0 ; ppaf24 = (PAF24_PRIVATE*) psf->codec_data ; normfact = (psf->norm_double == SF_TRUE) ? (1.0 / 0x80000000) : (1.0 / 0x100) ; iptr = ubuf.ibuf ; bufferlen = ARRAY_LEN (ubuf.ibuf) ; while (len > 0) { readcount = (len >= bufferlen) ? bufferlen : len ; count = paf24_read (psf, ppaf24, iptr, readcount) ; for (k = 0 ; k < readcount ; k++) ptr [total + k] = normfact * iptr [k] ; total += count ; len -= readcount ; } ; return total ; } /* paf24_read_d */ /*--------------------------------------------------------------------------- */ static int paf24_write_block (SF_PRIVATE *psf, PAF24_PRIVATE *ppaf24) { int k, nextsample, channel ; unsigned char *cptr ; /* First pack block. */ if (CPU_IS_LITTLE_ENDIAN) { for (k = 0 ; k < PAF24_SAMPLES_PER_BLOCK * ppaf24->channels ; k++) { channel = k % ppaf24->channels ; cptr = ((unsigned char *) ppaf24->block) + PAF24_BLOCK_SIZE * channel + 3 * (k / ppaf24->channels) ; nextsample = ppaf24->samples [k] >> 8 ; cptr [0] = nextsample ; cptr [1] = nextsample >> 8 ; cptr [2] = nextsample >> 16 ; } ; /* Do endian swapping if necessary. */ if (psf->endian == SF_ENDIAN_BIG) endswap_int_array (ppaf24->block, 8 * ppaf24->channels) ; } else if (CPU_IS_BIG_ENDIAN) { /* This is correct. */ for (k = 0 ; k < PAF24_SAMPLES_PER_BLOCK * ppaf24->channels ; k++) { channel = k % ppaf24->channels ; cptr = ((unsigned char *) ppaf24->block) + PAF24_BLOCK_SIZE * channel + 3 * (k / ppaf24->channels) ; nextsample = ppaf24->samples [k] >> 8 ; cptr [0] = nextsample ; cptr [1] = nextsample >> 8 ; cptr [2] = nextsample >> 16 ; } ; if (psf->endian == SF_ENDIAN_LITTLE) endswap_int_array (ppaf24->block, 8 * ppaf24->channels) ; } ; /* Write block to disk. */ if ((k = psf_fwrite (ppaf24->block, 1, ppaf24->blocksize, psf)) != ppaf24->blocksize) psf_log_printf (psf, "*** Warning : short write (%d != %d).\n", k, ppaf24->blocksize) ; if (ppaf24->sample_count < ppaf24->write_block * PAF24_SAMPLES_PER_BLOCK + ppaf24->write_count) ppaf24->sample_count = ppaf24->write_block * PAF24_SAMPLES_PER_BLOCK + ppaf24->write_count ; if (ppaf24->write_count == PAF24_SAMPLES_PER_BLOCK) { ppaf24->write_block ++ ; ppaf24->write_count = 0 ; } ; return 1 ; } /* paf24_write_block */ static int paf24_write (SF_PRIVATE *psf, PAF24_PRIVATE *ppaf24, const int *ptr, int len) { int count, total = 0 ; while (total < len) { count = (PAF24_SAMPLES_PER_BLOCK - ppaf24->write_count) * ppaf24->channels ; if (count > len - total) count = len - total ; memcpy (&(ppaf24->samples [ppaf24->write_count * ppaf24->channels]), &(ptr [total]), count * sizeof (int)) ; total += count ; ppaf24->write_count += count / ppaf24->channels ; if (ppaf24->write_count >= PAF24_SAMPLES_PER_BLOCK) paf24_write_block (psf, ppaf24) ; } ; return total ; } /* paf24_write */ static sf_count_t paf24_write_s (SF_PRIVATE *psf, const short *ptr, sf_count_t len) { BUF_UNION ubuf ; PAF24_PRIVATE *ppaf24 ; int *iptr ; int k, bufferlen, writecount = 0, count ; sf_count_t total = 0 ; if (psf->codec_data == NULL) return 0 ; ppaf24 = (PAF24_PRIVATE*) psf->codec_data ; iptr = ubuf.ibuf ; bufferlen = ARRAY_LEN (ubuf.ibuf) ; while (len > 0) { writecount = (len >= bufferlen) ? bufferlen : len ; for (k = 0 ; k < writecount ; k++) iptr [k] = ptr [total + k] << 16 ; count = paf24_write (psf, ppaf24, iptr, writecount) ; total += count ; len -= writecount ; if (count != writecount) break ; } ; return total ; } /* paf24_write_s */ static sf_count_t paf24_write_i (SF_PRIVATE *psf, const int *ptr, sf_count_t len) { PAF24_PRIVATE *ppaf24 ; int writecount, count ; sf_count_t total = 0 ; if (psf->codec_data == NULL) return 0 ; ppaf24 = (PAF24_PRIVATE*) psf->codec_data ; while (len > 0) { writecount = (len > 0x10000000) ? 0x10000000 : (int) len ; count = paf24_write (psf, ppaf24, ptr, writecount) ; total += count ; len -= count ; if (count != writecount) break ; } ; return total ; } /* paf24_write_i */ static sf_count_t paf24_write_f (SF_PRIVATE *psf, const float *ptr, sf_count_t len) { BUF_UNION ubuf ; PAF24_PRIVATE *ppaf24 ; int *iptr ; int k, bufferlen, writecount = 0, count ; sf_count_t total = 0 ; float normfact ; if (psf->codec_data == NULL) return 0 ; ppaf24 = (PAF24_PRIVATE*) psf->codec_data ; normfact = (psf->norm_float == SF_TRUE) ? (1.0 * 0x7FFFFFFF) : (1.0 / 0x100) ; iptr = ubuf.ibuf ; bufferlen = ARRAY_LEN (ubuf.ibuf) ; while (len > 0) { writecount = (len >= bufferlen) ? bufferlen : len ; for (k = 0 ; k < writecount ; k++) iptr [k] = psf_lrintf (normfact * ptr [total + k]) ; count = paf24_write (psf, ppaf24, iptr, writecount) ; total += count ; len -= writecount ; if (count != writecount) break ; } ; return total ; } /* paf24_write_f */ static sf_count_t paf24_write_d (SF_PRIVATE *psf, const double *ptr, sf_count_t len) { BUF_UNION ubuf ; PAF24_PRIVATE *ppaf24 ; int *iptr ; int k, bufferlen, writecount = 0, count ; sf_count_t total = 0 ; double normfact ; if (psf->codec_data == NULL) return 0 ; ppaf24 = (PAF24_PRIVATE*) psf->codec_data ; normfact = (psf->norm_double == SF_TRUE) ? (1.0 * 0x7FFFFFFF) : (1.0 / 0x100) ; iptr = ubuf.ibuf ; bufferlen = ARRAY_LEN (ubuf.ibuf) ; while (len > 0) { writecount = (len >= bufferlen) ? bufferlen : len ; for (k = 0 ; k < writecount ; k++) iptr [k] = psf_lrint (normfact * ptr [total+k]) ; count = paf24_write (psf, ppaf24, iptr, writecount) ; total += count ; len -= writecount ; if (count != writecount) break ; } ; return total ; } /* paf24_write_d */