--- /dev/null
+/*
+** Copyright (C) 2006-2011 Erik de Castro Lopo <erikd@mega-nerd.com>
+** Copyright (C) 2006 Paul Davis <paul@linuxaudiosystems.com>
+**
+** 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 <stdio.h>
+#include <stddef.h>
+#include <string.h>
+
+#include "common.h"
+
+
+static int gen_coding_history (char * added_history, int added_history_max, const SF_INFO * psfinfo) ;
+
+static inline size_t
+bc_min_size (const SF_BROADCAST_INFO* info)
+{ if (info == NULL)
+ return 0 ;
+
+ return offsetof (SF_BROADCAST_INFO, coding_history) + info->coding_history_size ;
+} /* bc_min_size */
+
+SF_BROADCAST_INFO_16K*
+broadcast_var_alloc (void)
+{ return calloc (1, sizeof (SF_BROADCAST_INFO_16K)) ;
+} /* broadcast_var_alloc */
+
+int
+broadcast_var_set (SF_PRIVATE *psf, const SF_BROADCAST_INFO * info, size_t datasize)
+{ size_t len ;
+
+ if (info == NULL)
+ return SF_FALSE ;
+
+ if (bc_min_size (info) > datasize)
+ { psf->error = SFE_BAD_BROADCAST_INFO_SIZE ;
+ return SF_FALSE ;
+ } ;
+
+ if (datasize >= sizeof (SF_BROADCAST_INFO_16K))
+ { psf->error = SFE_BAD_BROADCAST_INFO_TOO_BIG ;
+ return SF_FALSE ;
+ } ;
+
+ if (psf->broadcast_16k == NULL)
+ { if ((psf->broadcast_16k = broadcast_var_alloc ()) == NULL)
+ { psf->error = SFE_MALLOC_FAILED ;
+ return SF_FALSE ;
+ } ;
+ } ;
+
+ memcpy (psf->broadcast_16k, info, offsetof (SF_BROADCAST_INFO, coding_history)) ;
+
+ psf_strlcpy_crlf (psf->broadcast_16k->coding_history, info->coding_history, sizeof (psf->broadcast_16k->coding_history), datasize - offsetof (SF_BROADCAST_INFO, coding_history)) ;
+ len = strlen (psf->broadcast_16k->coding_history) ;
+
+ if (len > 0 && psf->broadcast_16k->coding_history [len - 1] != '\n')
+ psf_strlcat (psf->broadcast_16k->coding_history, sizeof (psf->broadcast_16k->coding_history), "\r\n") ;
+
+ if (psf->file.mode == SFM_WRITE)
+ { char added_history [256] ;
+
+ gen_coding_history (added_history, sizeof (added_history), &(psf->sf)) ;
+ psf_strlcat (psf->broadcast_16k->coding_history, sizeof (psf->broadcast_16k->coding_history), added_history) ;
+ } ;
+
+ /* Force coding_history_size to be even. */
+ len = strlen (psf->broadcast_16k->coding_history) ;
+ len += (len & 1) ? 1 : 2 ;
+ psf->broadcast_16k->coding_history_size = len ;
+
+ /* Currently writing this version. */
+ psf->broadcast_16k->version = 1 ;
+
+ return SF_TRUE ;
+} /* broadcast_var_set */
+
+
+int
+broadcast_var_get (SF_PRIVATE *psf, SF_BROADCAST_INFO * data, size_t datasize)
+{ size_t size ;
+
+ if (psf->broadcast_16k == NULL)
+ return SF_FALSE ;
+
+ size = SF_MIN (datasize, bc_min_size ((const SF_BROADCAST_INFO *) psf->broadcast_16k)) ;
+
+ memcpy (data, psf->broadcast_16k, size) ;
+
+ return SF_TRUE ;
+} /* broadcast_var_get */
+
+/*------------------------------------------------------------------------------
+*/
+
+static int
+gen_coding_history (char * added_history, int added_history_max, const SF_INFO * psfinfo)
+{ char chnstr [16] ;
+ int count, width ;
+
+ /*
+ ** From : http://www.sr.se/utveckling/tu/bwf/docs/codhist2.htm
+ **
+ ** Parameter Variable string <allowed option> Unit
+ ** ==========================================================================================
+ ** Coding Algorithm A=<ANALOGUE, PCM, MPEG1L1, MPEG1L2, MPEG1L3,
+ ** MPEG2L1, MPEG2L2, MPEG2L3>
+ ** Sampling frequency F=<11000,22050,24000,32000,44100,48000> [Hz]
+ ** Bit-rate B=<any bit-rate allowed in MPEG 2 (ISO/IEC [kbit/s per channel]
+ ** 13818-3)>
+ ** Word Length W=<8, 12, 14, 16, 18, 20, 22, 24> [bits]
+ ** Mode M=<mono, stereo, dual-mono, joint-stereo>
+ ** Text, free string T=<a free ASCII-text string for in house use.
+ ** This string should contain no commas (ASCII
+ ** 2Chex). Examples of the contents: ID-No; codec
+ ** type; A/D type>
+ */
+
+ switch (psfinfo->channels)
+ { case 0 :
+ return SF_FALSE ;
+
+ case 1 :
+ psf_strlcpy (chnstr, sizeof (chnstr), "mono") ;
+ break ;
+
+ case 2 :
+ psf_strlcpy (chnstr, sizeof (chnstr), "stereo") ;
+ break ;
+
+ default :
+ snprintf (chnstr, sizeof (chnstr), "%uchn", psfinfo->channels) ;
+ break ;
+ } ;
+
+ switch (SF_CODEC (psfinfo->format))
+ { case SF_FORMAT_PCM_U8 :
+ case SF_FORMAT_PCM_S8 :
+ width = 8 ;
+ break ;
+ case SF_FORMAT_PCM_16 :
+ width = 16 ;
+ break ;
+ case SF_FORMAT_PCM_24 :
+ width = 24 ;
+ break ;
+ case SF_FORMAT_PCM_32 :
+ width = 32 ;
+ break ;
+ case SF_FORMAT_FLOAT :
+ width = 24 ; /* Bits in the mantissa + 1 */
+ break ;
+ case SF_FORMAT_DOUBLE :
+ width = 53 ; /* Bits in the mantissa + 1 */
+ break ;
+ case SF_FORMAT_ULAW :
+ case SF_FORMAT_ALAW :
+ width = 12 ;
+ break ;
+ default :
+ width = 42 ;
+ break ;
+ } ;
+
+ count = snprintf (added_history, added_history_max,
+ "A=PCM,F=%u,W=%hu,M=%s,T=%s-%s\r\n",
+ psfinfo->samplerate, width, chnstr, PACKAGE, VERSION) ;
+
+ if (count >= added_history_max)
+ return 0 ;
+
+ return count ;
+} /* gen_coding_history */
+
projects / Faustine.git / blobdiff