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92 lines
2.5 KiB
C
92 lines
2.5 KiB
C
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/* GStreamer
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* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
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* 2000 Wim Taymans <wim.taymans@chello.be>
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*
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* gstosssink.c:
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include "gstosscommon.h"
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#include <sys/soundcard.h>
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gboolean
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gst_ossformat_get (gint law, gint endianness, gboolean sign, gint width, gint depth,
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gint *format, gint *bps)
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{
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if (width != depth)
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return FALSE;
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*bps = 1;
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if (law == 0) {
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if (width == 16) {
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if (sign == TRUE) {
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if (endianness == G_LITTLE_ENDIAN) {
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*format = AFMT_S16_LE;
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GST_DEBUG (GST_CAT_PLUGIN_INFO,
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"16 bit signed LE, no law (%d)", *format);
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}
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else if (endianness == G_BIG_ENDIAN) {
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*format = AFMT_S16_BE;
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GST_DEBUG (GST_CAT_PLUGIN_INFO,
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"16 bit signed BE, no law (%d)", *format);
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}
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}
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else {
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if (endianness == G_LITTLE_ENDIAN) {
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*format = AFMT_U16_LE;
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GST_DEBUG (GST_CAT_PLUGIN_INFO,
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"16 bit unsigned LE, no law (%d)", *format);
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}
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else if (endianness == G_BIG_ENDIAN) {
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*format = AFMT_U16_BE;
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GST_DEBUG (GST_CAT_PLUGIN_INFO,
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"16 bit unsigned BE, no law (%d)", *format);
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}
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}
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*bps = 2;
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}
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else if (width == 8) {
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if (sign == TRUE) {
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*format = AFMT_S8;
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GST_DEBUG (GST_CAT_PLUGIN_INFO,
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"8 bit signed, no law (%d)", *format);
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}
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else {
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*format = AFMT_U8;
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GST_DEBUG (GST_CAT_PLUGIN_INFO,
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"8 bit unsigned, no law (%d)", *format);
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}
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*bps = 1;
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}
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} else if (law == 1) {
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*format = AFMT_MU_LAW;
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GST_DEBUG (GST_CAT_PLUGIN_INFO,
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"mu law (%d)", *format);
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} else if (law == 2) {
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*format = AFMT_A_LAW;
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GST_DEBUG (GST_CAT_PLUGIN_INFO,
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"a law (%d)", *format);
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} else {
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g_critical ("unknown law");
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return FALSE;
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}
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return TRUE;
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}
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