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Diffstat (limited to 'sys/oss/gstossmixertrack.c')
| -rw-r--r-- | sys/oss/gstossmixertrack.c | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/sys/oss/gstossmixertrack.c b/sys/oss/gstossmixertrack.c new file mode 100644 index 00000000..48e4a9d6 --- /dev/null +++ b/sys/oss/gstossmixertrack.c @@ -0,0 +1,180 @@ +/* GStreamer OSS Mixer implementation + * Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net> + * + * gstossmixer.c: mixer interface implementation for OSS + * + * 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. + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include <stdio.h> +#include <stdlib.h> +#include <fcntl.h> +#include <unistd.h> +#include <string.h> +#include <errno.h> +#include <sys/ioctl.h> +#include <sys/soundcard.h> + +#include <gst/gst-i18n-plugin.h> + +#include "gstossmixertrack.h" + +#define MASK_BIT_IS_SET(mask, bit) \ + (mask & (1 << bit)) + +G_DEFINE_TYPE (GstOssMixerTrack, gst_ossmixer_track, GST_TYPE_MIXER_TRACK); + +static void +gst_ossmixer_track_class_init (GstOssMixerTrackClass * klass) +{ + /* nop */ +} + +static void +gst_ossmixer_track_init (GstOssMixerTrack * track) +{ + track->lvol = track->rvol = 0; + track->track_num = 0; +} + +static const gchar **labels = NULL; + +/* three functions: firstly, OSS has the nasty habit of inserting + * spaces in the labels, we want to get rid of them. Secondly, + * i18n is impossible with OSS' way of providing us with mixer + * labels, so we make a 'given' list of i18n'ed labels. Thirdly, I + * personally don't like the "1337" names that OSS gives to their + * labels ("Vol", "Mic", "Rec"), I'd rather see full names. */ + +static void +fill_labels (void) +{ + gint i, pos; + gchar *origs[SOUND_MIXER_NRDEVICES] = SOUND_DEVICE_LABELS; + struct + { + gchar *given, *wanted; + } + cases[] = { + /* Note: this list is simply ripped from soundcard.h. For + * some people, some values might be missing (3D surround, + * etc.) - feel free to add them. That's the reason why + * I'm doing this in such a horribly complicated way. */ + { + "Vol ", _("Volume")} + , { + "Bass ", _("Bass")} + , { + "Trebl", _("Treble")} + , { + "Synth", _("Synth")} + , { + "Pcm ", _("PCM")} + , { + "Spkr ", _("Speaker")} + , { + "Line ", _("Line-in")} + , { + "Mic ", _("Microphone")} + , { + "CD ", _("CD")} + , { + "Mix ", _("Mixer")} + , { + "Pcm2 ", _("PCM-2")} + , { + "Rec ", _("Record")} + , { + "IGain", _("In-gain")} + , { + "OGain", _("Out-gain")} + , { + "Line1", _("Line-1")} + , { + "Line2", _("Line-2")} + , { + "Line3", _("Line-3")} + , { + "Digital1", _("Digital-1")} + , { + "Digital2", _("Digital-2")} + , { + "Digital3", _("Digital-3")} + , { + "PhoneIn", _("Phone-in")} + , { + "PhoneOut", _("Phone-out")} + , { + "Video", _("Video")} + , { + "Radio", _("Radio")} + , { + "Monitor", _("Monitor")} + , { + NULL, NULL} + }; + + labels = g_malloc (sizeof (gchar *) * SOUND_MIXER_NRDEVICES); + + for (i = 0; i < SOUND_MIXER_NRDEVICES; i++) { + for (pos = 0; cases[pos].given != NULL; pos++) { + if (!strcmp (cases[pos].given, origs[i])) { + labels[i] = g_strdup (cases[pos].wanted); + break; + } + } + if (cases[pos].given == NULL) + labels[i] = g_strdup (origs[i]); + } +} + +GstMixerTrack * +gst_ossmixer_track_new (gint mixer_fd, + gint track_num, gint max_chans, gint flags) +{ + GstOssMixerTrack *osstrack; + GstMixerTrack *track; + gint volume; + + if (!labels) + fill_labels (); + + osstrack = g_object_new (GST_TYPE_OSSMIXER_TRACK, NULL); + track = GST_MIXER_TRACK (osstrack); + track->label = g_strdup (labels[track_num]); + track->num_channels = max_chans; + track->flags = flags; + track->min_volume = 0; + track->max_volume = 100; + osstrack->track_num = track_num; + + /* volume */ + if (ioctl (mixer_fd, MIXER_READ (osstrack->track_num), &volume) < 0) { + g_warning ("Error getting device (%d) volume: %s", + osstrack->track_num, strerror (errno)); + volume = 0; + } + osstrack->lvol = (volume & 0xff); + if (track->num_channels == 2) { + osstrack->rvol = ((volume >> 8) & 0xff); + } + + return track; +} |