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Original commit message from CVS: Patch by: Sam Morris <sam at robots dot org to uk> * gst-libs/gst/interfaces/mixertrack.c: (gst_mixer_track_class_init), (gst_mixer_track_get_property), (gst_mixer_track_set_property): API: Add "index" property to GstMixerTrack to differantiate between multiple mixer tracks with the same label. * ext/alsa/gstalsamixeroptions.c: (gst_alsa_mixer_options_new): * ext/alsa/gstalsamixertrack.c: (gst_alsa_mixer_track_new): Set the "index" property of GstMixerTrack to the index given by ALSA. Fixes bug #528299.
355 lines
10 KiB
C
355 lines
10 KiB
C
/* ALSA mixer track implementation.
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* Copyright (C) 2003 Leif Johnson <leif@ambient.2y.net>
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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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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <gst/gst-i18n-plugin.h>
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#include "gstalsamixertrack.h"
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static void gst_alsa_mixer_track_init (GstAlsaMixerTrack * alsa_track);
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static void gst_alsa_mixer_track_class_init (gpointer g_class,
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gpointer class_data);
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static GstMixerTrackClass *parent_class = NULL;
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GType
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gst_alsa_mixer_track_get_type (void)
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{
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static GType track_type = 0;
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if (!track_type) {
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static const GTypeInfo track_info = {
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sizeof (GstAlsaMixerTrackClass),
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NULL,
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NULL,
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gst_alsa_mixer_track_class_init,
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NULL,
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NULL,
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sizeof (GstAlsaMixerTrack),
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0,
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(GInstanceInitFunc) gst_alsa_mixer_track_init,
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NULL
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};
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track_type =
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g_type_register_static (GST_TYPE_MIXER_TRACK, "GstAlsaMixerTrack",
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&track_info, 0);
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}
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return track_type;
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}
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static void
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gst_alsa_mixer_track_class_init (gpointer g_class, gpointer class_data)
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{
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parent_class = g_type_class_peek_parent (g_class);
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}
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static void
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gst_alsa_mixer_track_init (GstAlsaMixerTrack * alsa_track)
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{
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}
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static void
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gst_alsa_mixer_track_update_alsa_capabilities (GstAlsaMixerTrack * alsa_track)
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{
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alsa_track->alsa_flags = 0;
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alsa_track->capture_group = -1;
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/* common flags */
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if (snd_mixer_selem_has_common_volume (alsa_track->element))
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alsa_track->alsa_flags |= GST_ALSA_MIXER_TRACK_VOLUME;
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if (snd_mixer_selem_has_common_switch (alsa_track->element))
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alsa_track->alsa_flags |= GST_ALSA_MIXER_TRACK_SWITCH;
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/* Since we create two separate mixer track objects for alsa elements that
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* support both playback and capture, we're going to 'hide' the alsa flags
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* that don't pertain to this mixer track from alsa_flags, otherwise
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* gst_alsa_mixer_track_update() is going to do things we don't want */
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/* playback flags */
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if ((GST_MIXER_TRACK (alsa_track)->flags & GST_MIXER_TRACK_OUTPUT)) {
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if (snd_mixer_selem_has_playback_volume (alsa_track->element))
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alsa_track->alsa_flags |= GST_ALSA_MIXER_TRACK_PVOLUME;
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if (snd_mixer_selem_has_playback_switch (alsa_track->element))
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alsa_track->alsa_flags |= GST_ALSA_MIXER_TRACK_PSWITCH;
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}
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/* capture flags */
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if ((GST_MIXER_TRACK (alsa_track)->flags & GST_MIXER_TRACK_INPUT)) {
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if (snd_mixer_selem_has_capture_volume (alsa_track->element))
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alsa_track->alsa_flags |= GST_ALSA_MIXER_TRACK_CVOLUME;
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if (snd_mixer_selem_has_capture_switch (alsa_track->element)) {
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alsa_track->alsa_flags |= GST_ALSA_MIXER_TRACK_CSWITCH;
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if (snd_mixer_selem_has_capture_switch_exclusive (alsa_track->element)) {
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alsa_track->alsa_flags |= GST_ALSA_MIXER_TRACK_CSWITCH_EXCL;
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alsa_track->capture_group =
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snd_mixer_selem_get_capture_group (alsa_track->element);
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}
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}
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}
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GST_LOG ("[%s] alsa_flags=0x%08x, capture_group=%d",
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snd_mixer_selem_get_name (alsa_track->element),
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alsa_track->alsa_flags, alsa_track->capture_group);
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}
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inline static gboolean
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alsa_track_has_cap (GstAlsaMixerTrack * alsa_track, guint32 flag)
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{
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return ((alsa_track->alsa_flags & flag) != 0);
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}
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GstMixerTrack *
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gst_alsa_mixer_track_new (snd_mixer_elem_t * element,
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gint num, gint track_num, gint flags, gboolean sw,
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GstAlsaMixerTrack * shared_mute_track, gboolean append_capture)
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{
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GstAlsaMixerTrack *alsa_track;
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GstMixerTrack *track;
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const gchar *name;
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guint index;
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const gchar *label;
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gint i;
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long min = 0, max = 0;
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const struct
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{
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const gchar orig[12];
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const gchar trans[12];
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} alsa_track_labels[] = {
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{
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"Master", N_("Master")}, {
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"Bass", N_("Bass")}, {
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"Treble", N_("Treble")}, {
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"PCM", N_("PCM")}, {
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"Synth", N_("Synth")}, {
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"Line", N_("Line-in")}, {
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"CD", N_("CD")}, {
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"Mic", N_("Microphone")}, {
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"PC Speaker", N_("PC Speaker")}, {
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"Playback", N_("Playback")}, {
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"Capture", N_("Capture")}
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};
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name = snd_mixer_selem_get_name (element);
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index = snd_mixer_selem_get_index (element);
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GST_LOG
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("[%s,%u] num=%d,track_num=%d,flags=0x%08x,sw=%s,shared_mute_track=%p",
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name, index, num, track_num, flags, (sw) ? "true" : "false",
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shared_mute_track);
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track = (GstMixerTrack *) g_object_new (GST_ALSA_MIXER_TRACK_TYPE,
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"untranslated-label", name, "index", index, NULL);
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alsa_track = (GstAlsaMixerTrack *) track;
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GST_LOG ("[%s] created new mixer track %p", name, track);
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/* This reflects the assumptions used for GstAlsaMixerTrack */
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if (!(!!(flags & GST_MIXER_TRACK_OUTPUT) ^ !!(flags & GST_MIXER_TRACK_INPUT))) {
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GST_ERROR ("Mixer track must be either output or input!");
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g_return_val_if_reached (NULL);
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}
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track->flags = flags;
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alsa_track->element = element;
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alsa_track->shared_mute = shared_mute_track;
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alsa_track->track_num = track_num;
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alsa_track->alsa_channels = 0;
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gst_alsa_mixer_track_update_alsa_capabilities (alsa_track);
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if (flags & GST_MIXER_TRACK_OUTPUT) {
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while (alsa_track->alsa_channels < GST_ALSA_MAX_CHANNELS &&
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snd_mixer_selem_has_playback_channel (element,
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alsa_track->alsa_channels)) {
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alsa_track->alsa_channels++;
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}
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GST_LOG ("[%s] %d output channels", name, alsa_track->alsa_channels);
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} else if (flags & GST_MIXER_TRACK_INPUT) {
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while (alsa_track->alsa_channels < GST_ALSA_MAX_CHANNELS &&
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snd_mixer_selem_has_capture_channel (element,
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alsa_track->alsa_channels)) {
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alsa_track->alsa_channels++;
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}
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GST_LOG ("[%s] %d input channels", name, alsa_track->alsa_channels);
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} else {
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g_assert_not_reached ();
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}
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if (sw)
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track->num_channels = 0;
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else
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track->num_channels = alsa_track->alsa_channels;
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/* translate the name if we can */
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label = name;
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for (i = 0; i < G_N_ELEMENTS (alsa_track_labels); ++i) {
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if (g_utf8_collate (label, alsa_track_labels[i].orig) == 0) {
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label = _(alsa_track_labels[i].trans);
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break;
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}
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}
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if (num == 0) {
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track->label = g_strdup_printf ("%s%s%s", label,
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append_capture ? " " : "", append_capture ? _("Capture") : "");
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} else {
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track->label = g_strdup_printf ("%s%s%s %d", label,
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append_capture ? " " : "", append_capture ? _("Capture") : "", num);
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}
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/* set volume information */
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if (track->num_channels > 0) {
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if ((flags & GST_MIXER_TRACK_OUTPUT))
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snd_mixer_selem_get_playback_volume_range (element, &min, &max);
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else
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snd_mixer_selem_get_capture_volume_range (element, &min, &max);
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}
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track->min_volume = (gint) min;
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track->max_volume = (gint) max;
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for (i = 0; i < track->num_channels; i++) {
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long tmp = 0;
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if (flags & GST_MIXER_TRACK_OUTPUT)
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snd_mixer_selem_get_playback_volume (element, i, &tmp);
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else
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snd_mixer_selem_get_capture_volume (element, i, &tmp);
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alsa_track->volumes[i] = (gint) tmp;
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}
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gst_alsa_mixer_track_update (alsa_track);
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return track;
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}
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void
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gst_alsa_mixer_track_update (GstAlsaMixerTrack * alsa_track)
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{
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GstMixerTrack *track = (GstMixerTrack *) alsa_track;
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gint i;
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gint audible = !(track->flags & GST_MIXER_TRACK_MUTE);
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if (alsa_track_has_cap (alsa_track, GST_ALSA_MIXER_TRACK_PVOLUME)) {
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/* update playback volume */
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for (i = 0; i < track->num_channels; i++) {
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long vol = 0;
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snd_mixer_selem_get_playback_volume (alsa_track->element, i, &vol);
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alsa_track->volumes[i] = (gint) vol;
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}
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}
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if (alsa_track_has_cap (alsa_track, GST_ALSA_MIXER_TRACK_CVOLUME)) {
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/* update capture volume */
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for (i = 0; i < track->num_channels; i++) {
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long vol = 0;
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snd_mixer_selem_get_capture_volume (alsa_track->element, i, &vol);
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alsa_track->volumes[i] = (gint) vol;
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}
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}
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/* Any updates in flags? */
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if (alsa_track_has_cap (alsa_track, GST_ALSA_MIXER_TRACK_PSWITCH)) {
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int v = 0;
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audible = 0;
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for (i = 0; i < alsa_track->alsa_channels; ++i) {
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snd_mixer_selem_get_playback_switch (alsa_track->element, i, &v);
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audible += v;
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}
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} else if (alsa_track_has_cap (alsa_track, GST_ALSA_MIXER_TRACK_PVOLUME) &&
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track->flags & GST_MIXER_TRACK_MUTE) {
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/* check if user has raised volume with a parallel running application */
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for (i = 0; i < track->num_channels; i++) {
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long vol = 0;
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snd_mixer_selem_get_playback_volume (alsa_track->element, i, &vol);
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if (vol > track->min_volume) {
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audible = 1;
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break;
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}
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}
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}
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if (!!(audible) != !(track->flags & GST_MIXER_TRACK_MUTE)) {
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if (audible) {
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track->flags &= ~GST_MIXER_TRACK_MUTE;
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if (alsa_track->shared_mute)
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((GstMixerTrack *) (alsa_track->shared_mute))->flags &=
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~GST_MIXER_TRACK_MUTE;
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} else {
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track->flags |= GST_MIXER_TRACK_MUTE;
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if (alsa_track->shared_mute)
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((GstMixerTrack *) (alsa_track->shared_mute))->flags |=
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GST_MIXER_TRACK_MUTE;
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}
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}
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if (track->flags & GST_MIXER_TRACK_INPUT) {
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gint recording = track->flags & GST_MIXER_TRACK_RECORD;
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if (alsa_track_has_cap (alsa_track, GST_ALSA_MIXER_TRACK_CSWITCH)) {
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int v = 0;
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recording = 0;
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for (i = 0; i < alsa_track->alsa_channels; ++i) {
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snd_mixer_selem_get_capture_switch (alsa_track->element, i, &v);
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recording += v;
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}
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} else if (alsa_track_has_cap (alsa_track, GST_ALSA_MIXER_TRACK_CVOLUME) &&
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!(track->flags & GST_MIXER_TRACK_RECORD)) {
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/* check if user has raised volume with a parallel running application */
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for (i = 0; i < track->num_channels; i++) {
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long vol = 0;
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snd_mixer_selem_get_capture_volume (alsa_track->element, i, &vol);
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if (vol > track->min_volume) {
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recording = 1;
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break;
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}
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}
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}
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if (recording)
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track->flags |= GST_MIXER_TRACK_RECORD;
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else
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track->flags &= ~GST_MIXER_TRACK_RECORD;
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}
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}
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