common.c
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上传日期:2022-01-05
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- /*
- ** Copyright (C) 1999-2009 Erik de Castro Lopo <erikd@mega-nerd.com>
- ** Copyright (C) 2008 George Blood Audio
- **
- ** All rights reserved.
- **
- ** Redistribution and use in source and binary forms, with or without
- ** modification, are permitted provided that the following conditions are
- ** met:
- **
- ** * Redistributions of source code must retain the above copyright
- ** notice, this list of conditions and the following disclaimer.
- ** * Redistributions in binary form must reproduce the above copyright
- ** notice, this list of conditions and the following disclaimer in
- ** the documentation and/or other materials provided with the
- ** distribution.
- ** * Neither the author nor the names of any contributors may be used
- ** to endorse or promote products derived from this software without
- ** specific prior written permission.
- **
- ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
- ** TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- ** PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
- ** CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- ** EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- ** PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
- ** OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
- ** WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
- ** OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
- ** ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
- #include <ctype.h>
- #include <sndfile.h>
- #include "common.h"
- #define BUFFER_LEN 4096
- #define MIN(x,y) ((x) < (y) ? (x) : (y))
- void
- sfe_copy_data_fp (SNDFILE *outfile, SNDFILE *infile, int channels)
- { static double data [BUFFER_LEN], max ;
- int frames, readcount, k ;
- frames = BUFFER_LEN / channels ;
- readcount = frames ;
- sf_command (infile, SFC_CALC_SIGNAL_MAX, &max, sizeof (max)) ;
- if (max < 1.0)
- { while (readcount > 0)
- { readcount = sf_readf_double (infile, data, frames) ;
- sf_writef_double (outfile, data, readcount) ;
- } ;
- }
- else
- { sf_command (infile, SFC_SET_NORM_DOUBLE, NULL, SF_FALSE) ;
- while (readcount > 0)
- { readcount = sf_readf_double (infile, data, frames) ;
- for (k = 0 ; k < readcount * channels ; k++)
- data [k] /= max ;
- sf_writef_double (outfile, data, readcount) ;
- } ;
- } ;
- return ;
- } /* sfe_copy_data_fp */
- void
- sfe_copy_data_int (SNDFILE *outfile, SNDFILE *infile, int channels)
- { static int data [BUFFER_LEN] ;
- int frames, readcount ;
- frames = BUFFER_LEN / channels ;
- readcount = frames ;
- while (readcount > 0)
- { readcount = sf_readf_int (infile, data, frames) ;
- sf_writef_int (outfile, data, readcount) ;
- } ;
- return ;
- } /* sfe_copy_data_int */
- /*==============================================================================
- */
- static int
- merge_broadcast_info (SNDFILE * infile, SNDFILE * outfile, int format, const METADATA_INFO * info)
- { SF_BROADCAST_INFO_2K binfo ;
- int infileminor ;
- memset (&binfo, 0, sizeof (binfo)) ;
- if ((SF_FORMAT_TYPEMASK & format) != SF_FORMAT_WAV)
- { printf ("Error : This is not a WAV file and hence broadcast info cannot be added to it.nn") ;
- return 1 ;
- } ;
- infileminor = SF_FORMAT_SUBMASK & format ;
- switch (infileminor)
- { case SF_FORMAT_PCM_16 :
- case SF_FORMAT_PCM_24 :
- case SF_FORMAT_PCM_32 :
- break ;
- default :
- printf (
- "Warning : The EBU Technical Recommendation R68-2000 states that the onlyn"
- " allowed encodings are Linear PCM and MPEG3. This file is not inn"
- " the right format.nn"
- ) ;
- break ;
- } ;
- if (sf_command (infile, SFC_GET_BROADCAST_INFO, &binfo, sizeof (binfo)) == 0)
- { if (infile == outfile)
- { printf (
- "Error : Attempting in-place broadcast info update, but file does notn"
- " have a 'bext' chunk to modify. The solution is to specify bothn"
- " input and output files on the command line.nn"
- ) ;
- return 1 ;
- } ;
- } ;
- #define REPLACE_IF_NEW(x)
- if (info->x != NULL)
- { memset (binfo.x, 0, sizeof (binfo.x)) ;
- memcpy (binfo.x, info->x, MIN (strlen (info->x), sizeof (binfo.x))) ;
- } ;
- REPLACE_IF_NEW (description) ;
- REPLACE_IF_NEW (originator) ;
- REPLACE_IF_NEW (originator_reference) ;
- REPLACE_IF_NEW (origination_date) ;
- REPLACE_IF_NEW (origination_time) ;
- REPLACE_IF_NEW (umid) ;
- /* Special case for coding_history because we may want to append. */
- if (info->coding_history != NULL)
- { if (info->coding_hist_append)
- { int slen = strlen (binfo.coding_history) ;
- while (slen > 1 && isspace (binfo.coding_history [slen - 1]))
- slen -- ;
- memcpy (binfo.coding_history + slen, info->coding_history, sizeof (binfo.coding_history) - slen) ;
- }
- else
- { size_t slen = MIN (strlen (info->coding_history), sizeof (binfo.coding_history)) ;
- memset (binfo.coding_history, 0, sizeof (binfo.coding_history)) ;
- memcpy (binfo.coding_history, info->coding_history, slen) ;
- binfo.coding_history_size = slen ;
- } ;
- } ;
- if (sf_command (outfile, SFC_SET_BROADCAST_INFO, &binfo, sizeof (binfo)) == 0)
- { printf ("Error : Setting of broadcast info chunks failed.nn") ;
- return 1 ;
- } ;
- return 0 ;
- } /* merge_broadcast_info*/
- static void
- update_strings (SNDFILE * outfile, const METADATA_INFO * info)
- {
- if (info->title != NULL)
- sf_set_string (outfile, SF_STR_TITLE, info->title) ;
- if (info->copyright != NULL)
- sf_set_string (outfile, SF_STR_TITLE, info->copyright) ;
- if (info->artist != NULL)
- sf_set_string (outfile, SF_STR_ARTIST, info->artist) ;
- if (info->comment != NULL)
- sf_set_string (outfile, SF_STR_TITLE, info->comment) ;
- if (info->date != NULL)
- sf_set_string (outfile, SF_STR_DATE, info->date) ;
- if (info->album != NULL)
- sf_set_string (outfile, SF_STR_TITLE, info->album) ;
- if (info->license != NULL)
- sf_set_string (outfile, SF_STR_TITLE, info->license) ;
- } /* update_strings */
- void
- sfe_apply_metadata_changes (const char * filenames [2], const METADATA_INFO * info)
- { SNDFILE *infile = NULL, *outfile = NULL ;
- SF_INFO sfinfo ;
- METADATA_INFO tmpinfo ;
- int error_code = 0 ;
- memset (&sfinfo, 0, sizeof (sfinfo)) ;
- memset (&tmpinfo, 0, sizeof (tmpinfo)) ;
- if (filenames [1] == NULL)
- infile = outfile = sf_open (filenames [0], SFM_RDWR, &sfinfo) ;
- else
- { infile = sf_open (filenames [0], SFM_READ, &sfinfo) ;
- /* Output must be WAV. */
- sfinfo.format = SF_FORMAT_WAV | (SF_FORMAT_SUBMASK & sfinfo.format) ;
- outfile = sf_open (filenames [1], SFM_WRITE, &sfinfo) ;
- } ;
- if (infile == NULL)
- { printf ("Error : Not able to open input file '%s' : %sn", filenames [0], sf_strerror (infile)) ;
- error_code = 1 ;
- goto cleanup_exit ;
- } ;
- if (outfile == NULL)
- { printf ("Error : Not able to open output file '%s' : %sn", filenames [1], sf_strerror (outfile)) ;
- error_code = 1 ;
- goto cleanup_exit ;
- } ;
- if (info->has_bext_fields && merge_broadcast_info (infile, outfile, sfinfo.format, info))
- { error_code = 1 ;
- goto cleanup_exit ;
- } ;
- update_strings (outfile, info) ;
- if (infile != outfile)
- { int infileminor = SF_FORMAT_SUBMASK & sfinfo.format ;
- /* If the input file is not the same as the output file, copy the data. */
- if ((infileminor == SF_FORMAT_DOUBLE) || (infileminor == SF_FORMAT_FLOAT))
- sfe_copy_data_fp (outfile, infile, sfinfo.channels) ;
- else
- sfe_copy_data_int (outfile, infile, sfinfo.channels) ;
- } ;
- cleanup_exit :
- if (outfile != NULL && outfile != infile)
- sf_close (outfile) ;
- if (infile != NULL)
- sf_close (infile) ;
- if (error_code)
- exit (error_code) ;
- return ;
- } /* sfe_apply_metadata_changes */
- /*==============================================================================
- */
- typedef struct
- { const char *ext ;
- int len ;
- int format ;
- } OUTPUT_FORMAT_MAP ;
- static OUTPUT_FORMAT_MAP format_map [] =
- {
- { "aif", 3, SF_FORMAT_AIFF },
- { "wav", 0, SF_FORMAT_WAV },
- { "au", 0, SF_FORMAT_AU },
- { "caf", 0, SF_FORMAT_CAF },
- { "flac", 0, SF_FORMAT_FLAC },
- { "snd", 0, SF_FORMAT_AU },
- { "svx", 0, SF_FORMAT_SVX },
- { "paf", 0, SF_ENDIAN_BIG | SF_FORMAT_PAF },
- { "fap", 0, SF_ENDIAN_LITTLE | SF_FORMAT_PAF },
- { "gsm", 0, SF_FORMAT_RAW },
- { "nist", 0, SF_FORMAT_NIST },
- { "htk", 0, SF_FORMAT_HTK },
- { "ircam", 0, SF_FORMAT_IRCAM },
- { "sf", 0, SF_FORMAT_IRCAM },
- { "voc", 0, SF_FORMAT_VOC },
- { "w64", 0, SF_FORMAT_W64 },
- { "raw", 0, SF_FORMAT_RAW },
- { "mat4", 0, SF_FORMAT_MAT4 },
- { "mat5", 0, SF_FORMAT_MAT5 },
- { "mat", 0, SF_FORMAT_MAT4 },
- { "pvf", 0, SF_FORMAT_PVF },
- { "sds", 0, SF_FORMAT_SDS },
- { "sd2", 0, SF_FORMAT_SD2 },
- { "vox", 0, SF_FORMAT_RAW },
- { "xi", 0, SF_FORMAT_XI },
- { "wve", 0, SF_FORMAT_WVE },
- { "oga", 0, SF_FORMAT_OGG },
- { "mpc", 0, SF_FORMAT_MPC2K },
- { "rf64", 0, SF_FORMAT_RF64 },
- } ; /* format_map */
- int
- sfe_file_type_of_ext (const char *str, int format)
- { char buffer [16], *cptr ;
- int k ;
- format &= SF_FORMAT_SUBMASK ;
- if ((cptr = strrchr (str, '.')) == NULL)
- return 0 ;
- strncpy (buffer, cptr + 1, 15) ;
- buffer [15] = 0 ;
- for (k = 0 ; buffer [k] ; k++)
- buffer [k] = tolower ((buffer [k])) ;
- if (strcmp (buffer, "gsm") == 0)
- return SF_FORMAT_RAW | SF_FORMAT_GSM610 ;
- if (strcmp (buffer, "vox") == 0)
- return SF_FORMAT_RAW | SF_FORMAT_VOX_ADPCM ;
- for (k = 0 ; k < (int) (sizeof (format_map) / sizeof (format_map [0])) ; k++)
- { if (format_map [k].len > 0 && strncmp (buffer, format_map [k].ext, format_map [k].len) == 0)
- return format_map [k].format | format ;
- else if (strcmp (buffer, format_map [k].ext) == 0)
- return format_map [k].format | format ;
- } ;
- /* Default if all the above fails. */
- return (SF_FORMAT_WAV | SF_FORMAT_PCM_24) ;
- } /* sfe_file_type_of_ext */
- void
- sfe_dump_format_map (void)
- { SF_FORMAT_INFO info ;
- int k ;
- for (k = 0 ; k < ARRAY_LEN (format_map) ; k++)
- { info.format = format_map [k].format ;
- sf_command (NULL, SFC_GET_FORMAT_INFO, &info, sizeof (info)) ;
- printf (" %-10s : %sn", format_map [k].ext, info.name == NULL ? "????" : info.name) ;
- } ;
- } /* sfe_dump_format_map */