diff options
Diffstat (limited to 'sys/oss/gstosscommon.c')
| -rw-r--r-- | sys/oss/gstosscommon.c | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/sys/oss/gstosscommon.c b/sys/oss/gstosscommon.c new file mode 100644 index 00000000..cadf5a2d --- /dev/null +++ b/sys/oss/gstosscommon.c @@ -0,0 +1,91 @@ +/* GStreamer + * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu> + * 2000 Wim Taymans <wim.taymans@chello.be> + * + * gstosssink.c: + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library 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 + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ + + +#include "gstosscommon.h" +#include <sys/soundcard.h> + +gboolean +gst_ossformat_get (gint law, gint endianness, gboolean sign, gint width, gint depth, + gint *format, gint *bps) +{ + if (width != depth) + return FALSE; + + *bps = 1; + + if (law == 0) { + if (width == 16) { + if (sign == TRUE) { + if (endianness == G_LITTLE_ENDIAN) { + *format = AFMT_S16_LE; + GST_DEBUG (GST_CAT_PLUGIN_INFO, + "16 bit signed LE, no law (%d)", *format); + } + else if (endianness == G_BIG_ENDIAN) { + *format = AFMT_S16_BE; + GST_DEBUG (GST_CAT_PLUGIN_INFO, + "16 bit signed BE, no law (%d)", *format); + } + } + else { + if (endianness == G_LITTLE_ENDIAN) { + *format = AFMT_U16_LE; + GST_DEBUG (GST_CAT_PLUGIN_INFO, + "16 bit unsigned LE, no law (%d)", *format); + } + else if (endianness == G_BIG_ENDIAN) { + *format = AFMT_U16_BE; + GST_DEBUG (GST_CAT_PLUGIN_INFO, + "16 bit unsigned BE, no law (%d)", *format); + } + } + *bps = 2; + } + else if (width == 8) { + if (sign == TRUE) { + *format = AFMT_S8; + GST_DEBUG (GST_CAT_PLUGIN_INFO, + "8 bit signed, no law (%d)", *format); + } + else { + *format = AFMT_U8; + GST_DEBUG (GST_CAT_PLUGIN_INFO, + "8 bit unsigned, no law (%d)", *format); + } + *bps = 1; + } + } else if (law == 1) { + *format = AFMT_MU_LAW; + GST_DEBUG (GST_CAT_PLUGIN_INFO, + "mu law (%d)", *format); + } else if (law == 2) { + *format = AFMT_A_LAW; + GST_DEBUG (GST_CAT_PLUGIN_INFO, + "a law (%d)", *format); + } else { + g_critical ("unknown law"); + return FALSE; + } + + return TRUE; +} |