/* GStreamer OSS4 mixer implementation * Copyright (C) 2007-2008 Tim-Philipp Müller * * 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 mixer library; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ /** * SECTION:element-oss4mixer * * This element lets you adjust sound input and output levels with the * Open Sound System (OSS) version 4. It supports the GstMixer interface, which * can be used to obtain a list of available mixer tracks. Set the mixer * element to READY state before using the GstMixer interface on it. * * * Example pipelines * * oss4mixer can't be used in a sensible way in gst-launch. * * * * Since: 0.10.7 */ /* Note: ioctl calls on the same open mixer device are serialised via * the object lock to make sure we don't do concurrent ioctls from two * different threads (e.g. app thread and mixer watch thread), since that * will probably confuse OSS. */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include #include #include #include #include #include #include #include #include #include #define NO_LEGACY_MIXER #include "oss4-audio.h" #include "oss4-mixer.h" #include "oss4-mixer-enum.h" #include "oss4-mixer-slider.h" #include "oss4-mixer-switch.h" #include "oss4-property-probe.h" #include "oss4-soundcard.h" #define GST_OSS4_MIXER_WATCH_INTERVAL 500 /* in millisecs, ie. 0.5s */ GST_DEBUG_CATEGORY_EXTERN (oss4mixer_debug); #define GST_CAT_DEFAULT oss4mixer_debug #define DEFAULT_DEVICE NULL #define DEFAULT_DEVICE_NAME NULL enum { PROP_0, PROP_DEVICE, PROP_DEVICE_NAME }; static void gst_oss4_mixer_init_interfaces (GType type); GST_BOILERPLATE_FULL (GstOss4Mixer, gst_oss4_mixer, GstElement, GST_TYPE_ELEMENT, gst_oss4_mixer_init_interfaces); static GstStateChangeReturn gst_oss4_mixer_change_state (GstElement * element, GstStateChange transition); static void gst_oss4_mixer_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec); static void gst_oss4_mixer_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec); static void gst_oss4_mixer_finalize (GObject * object); static gboolean gst_oss4_mixer_open (GstOss4Mixer * mixer, gboolean silent_errors); static void gst_oss4_mixer_close (GstOss4Mixer * mixer); static gboolean gst_oss4_mixer_enum_control_update_enum_list (GstOss4Mixer * m, GstOss4MixerControl * mc); #ifndef GST_DISABLE_GST_DEBUG static const gchar *mixer_ext_type_get_name (gint type); static const gchar *mixer_ext_flags_get_string (gint flags); #endif static void gst_oss4_mixer_base_init (gpointer klass) { gst_element_class_set_details_simple (GST_ELEMENT_CLASS (klass), "OSS v4 Audio Mixer", "Generic/Audio", "Control sound input and output levels with OSS4", "Tim-Philipp Müller "); } static void gst_oss4_mixer_class_init (GstOss4MixerClass * klass) { GstElementClass *element_class; GObjectClass *gobject_class; element_class = (GstElementClass *) klass; gobject_class = (GObjectClass *) klass; gobject_class->finalize = gst_oss4_mixer_finalize; gobject_class->set_property = gst_oss4_mixer_set_property; gobject_class->get_property = gst_oss4_mixer_get_property; /** * GstOss4Mixer:device * * OSS4 mixer device (e.g. /dev/oss/hdaudio0/mix0 or /dev/mixerN) * **/ g_object_class_install_property (gobject_class, PROP_DEVICE, g_param_spec_string ("device", "Device", "OSS mixer device (e.g. /dev/oss/hdaudio0/mix0 or /dev/mixerN) " "(NULL = use first mixer device found)", DEFAULT_DEVICE, G_PARAM_READWRITE)); /** * GstOss4Mixer:device-name * * Human-readable name of the sound device. May be NULL if the device is * not open (ie. when the mixer is in NULL state) * **/ g_object_class_install_property (gobject_class, PROP_DEVICE_NAME, g_param_spec_string ("device-name", "Device name", "Human-readable name of the sound device", DEFAULT_DEVICE_NAME, G_PARAM_READABLE)); element_class->change_state = GST_DEBUG_FUNCPTR (gst_oss4_mixer_change_state); } static void gst_oss4_mixer_finalize (GObject * obj) { GstOss4Mixer *mixer = GST_OSS4_MIXER (obj); g_free (mixer->device); G_OBJECT_CLASS (parent_class)->finalize (obj); } static void gst_oss4_mixer_reset (GstOss4Mixer * mixer) { mixer->fd = -1; mixer->need_update = TRUE; memset (&mixer->last_mixext, 0, sizeof (oss_mixext)); } static void gst_oss4_mixer_init (GstOss4Mixer * mixer, GstOss4MixerClass * g_class) { mixer->device = g_strdup (DEFAULT_DEVICE); mixer->device_name = NULL; gst_oss4_mixer_reset (mixer); } static void gst_oss4_mixer_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec) { GstOss4Mixer *mixer = GST_OSS4_MIXER (object); switch (prop_id) { case PROP_DEVICE: GST_OBJECT_LOCK (mixer); if (!GST_OSS4_MIXER_IS_OPEN (mixer)) { g_free (mixer->device); mixer->device = g_value_dup_string (value); /* unset any cached device-name */ g_free (mixer->device_name); mixer->device_name = NULL; } else { g_warning ("%s: can't change \"device\" property while mixer is open", GST_OBJECT_NAME (mixer)); } GST_OBJECT_UNLOCK (mixer); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gst_oss4_mixer_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec) { GstOss4Mixer *mixer = GST_OSS4_MIXER (object); switch (prop_id) { case PROP_DEVICE: GST_OBJECT_LOCK (mixer); g_value_set_string (value, mixer->device); GST_OBJECT_UNLOCK (mixer); break; case PROP_DEVICE_NAME: GST_OBJECT_LOCK (mixer); /* If device is set, try to retrieve the name even if we're not open */ if (mixer->fd == -1 && mixer->device != NULL) { if (gst_oss4_mixer_open (mixer, TRUE)) { g_value_set_string (value, mixer->device_name); gst_oss4_mixer_close (mixer); } else { g_value_set_string (value, mixer->device_name); } } else { g_value_set_string (value, mixer->device_name); } GST_OBJECT_UNLOCK (mixer); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static gboolean gst_oss4_mixer_open (GstOss4Mixer * mixer, gboolean silent_errors) { struct oss_mixerinfo mi = { 0, }; gchar *device; g_return_val_if_fail (!GST_OSS4_MIXER_IS_OPEN (mixer), FALSE); if (mixer->device) device = g_strdup (mixer->device); else device = gst_oss4_audio_find_device (GST_OBJECT_CAST (mixer)); /* desperate times, desperate measures */ if (device == NULL) device = g_strdup ("/dev/mixer"); GST_INFO_OBJECT (mixer, "Trying to open OSS4 mixer device '%s'", device); mixer->fd = open (device, O_RDWR, 0); if (mixer->fd < 0) goto open_failed; /* Make sure it's OSS4. If it's old OSS, let the old ossmixer handle it */ if (!gst_oss4_audio_check_version (GST_OBJECT (mixer), mixer->fd)) goto legacy_oss; GST_INFO_OBJECT (mixer, "Opened mixer device '%s', which is mixer %d", device, mi.dev); /* Get device name for currently open fd */ mi.dev = -1; if (ioctl (mixer->fd, SNDCTL_MIXERINFO, &mi) == 0) { mixer->modify_counter = mi.modify_counter; if (mi.name[0] != '\0') { mixer->device_name = g_strdup (mi.name); } } else { mixer->modify_counter = 0; } if (mixer->device_name == NULL) { mixer->device_name = g_strdup ("Unknown"); } GST_INFO_OBJECT (mixer, "device name = '%s'", mixer->device_name); mixer->open_device = device; return TRUE; /* ERRORS */ open_failed: { if (!silent_errors) { GST_ELEMENT_ERROR (mixer, RESOURCE, OPEN_READ_WRITE, (_("Could not open audio device for mixer control handling.")), GST_ERROR_SYSTEM); } else { GST_DEBUG_OBJECT (mixer, "open failed: %s (ignoring errors)", g_strerror (errno)); } g_free (device); return FALSE; } legacy_oss: { gst_oss4_mixer_close (mixer); if (!silent_errors) { GST_ELEMENT_ERROR (mixer, RESOURCE, OPEN_READ_WRITE, (_("Could not open audio device for mixer control handling. " "This version of the Open Sound System is not supported by this " "element.")), ("Try the 'ossmixer' element instead")); } else { GST_DEBUG_OBJECT (mixer, "open failed: legacy oss (ignoring errors)"); } g_free (device); return FALSE; } } static void gst_oss4_mixer_control_free (GstOss4MixerControl * mc) { g_list_free (mc->children); g_list_free (mc->mute_group); g_free (mc->enum_vals); memset (mc, 0, sizeof (GstOss4MixerControl)); g_free (mc); } static void gst_oss4_mixer_free_tracks (GstOss4Mixer * mixer) { g_list_foreach (mixer->tracks, (GFunc) g_object_unref, NULL); g_list_free (mixer->tracks); mixer->tracks = NULL; g_list_foreach (mixer->controls, (GFunc) gst_oss4_mixer_control_free, NULL); g_list_free (mixer->controls); mixer->controls = NULL; } static void gst_oss4_mixer_close (GstOss4Mixer * mixer) { g_free (mixer->device_name); mixer->device_name = NULL; g_free (mixer->open_device); mixer->open_device = NULL; gst_oss4_mixer_free_tracks (mixer); if (mixer->fd != -1) { close (mixer->fd); mixer->fd = -1; } gst_oss4_mixer_reset (mixer); } static void gst_oss4_mixer_watch_process_changes (GstOss4Mixer * mixer) { GList *c, *t, *tracks = NULL; GST_INFO_OBJECT (mixer, "mixer interface or control changed"); /* this is all with the mixer object lock held */ /* we go through the list backwards so we can bail out faster when the entire * interface needs to be rebuilt */ for (c = g_list_last (mixer->controls); c != NULL; c = c->prev) { GstOss4MixerControl *mc = c->data; oss_mixer_value ossval = { 0, }; mc->changed = FALSE; mc->list_changed = FALSE; /* not interested in controls we don't expose in the mixer interface */ if (!mc->used) continue; /* don't try to read a value from controls that don't have one */ if (mc->mixext.type == MIXT_DEVROOT || mc->mixext.type == MIXT_GROUP) continue; /* is this an enum control whose list may change? */ if (mc->mixext.type == MIXT_ENUM && mc->enum_version != 0) { if (gst_oss4_mixer_enum_control_update_enum_list (mixer, mc)) mc->list_changed = TRUE; } ossval.dev = mc->mixext.dev; ossval.ctrl = mc->mixext.ctrl; ossval.timestamp = mc->mixext.timestamp; if (ioctl (mixer->fd, SNDCTL_MIX_READ, &ossval) == -1) { if (errno == EIDRM || errno == EFAULT) { GST_DEBUG ("%s has disappeared", mc->mixext.extname); goto mixer_changed; } GST_WARNING_OBJECT (mixer, "MIX_READ failed: %s", g_strerror (errno)); /* just ignore, move on to next one */ continue; } if (ossval.value == mc->last_val) { /* no change */ /* GST_LOG_OBJECT (mixer, "%s hasn't changed", mc->mixext.extname); */ continue; } mc->last_val = ossval.value; GST_LOG_OBJECT (mixer, "%s changed value to %u 0x%08x", mc->mixext.extname, ossval.value, ossval.value); mc->changed = TRUE; } /* copy list and take track refs, so we can safely drop the object lock, * which we need to do to be able to post messages on the bus */ tracks = g_list_copy (mixer->tracks); g_list_foreach (tracks, (GFunc) g_object_ref, NULL); GST_OBJECT_UNLOCK (mixer); /* since we don't know (or want to know exactly) which controls belong to * which track, we just go through the tracks one-by-one now and make them * check themselves if any of their controls have changed and which messages * to post on the bus as a result */ for (t = tracks; t != NULL; t = t->next) { GstMixerTrack *track = t->data; if (GST_IS_OSS4_MIXER_SLIDER (track)) { gst_oss4_mixer_slider_process_change_unlocked (track); } else if (GST_IS_OSS4_MIXER_SWITCH (track)) { gst_oss4_mixer_switch_process_change_unlocked (track); } else if (GST_IS_OSS4_MIXER_ENUM (track)) { gst_oss4_mixer_enum_process_change_unlocked (track); } g_object_unref (track); } g_list_free (tracks); GST_OBJECT_LOCK (mixer); return; mixer_changed: { GST_OBJECT_UNLOCK (mixer); gst_mixer_mixer_changed (GST_MIXER (mixer)); GST_OBJECT_LOCK (mixer); return; } } /* This thread watches the mixer for changes in a somewhat inefficient way * (running an ioctl every half second or so). This is still better and * cheaper than apps polling all tracks for changes a few times a second * though. Needs more thought. There's probably (hopefully) a way to get * notifications via the fd directly somehow. */ static gpointer gst_oss4_mixer_watch_thread (gpointer thread_data) { GstOss4Mixer *mixer = GST_OSS4_MIXER_CAST (thread_data); GST_DEBUG_OBJECT (mixer, "watch thread running"); GST_OBJECT_LOCK (mixer); while (!mixer->watch_shutdown) { oss_mixerinfo mi = { 0, }; GTimeVal tv; mi.dev = -1; if (ioctl (mixer->fd, SNDCTL_MIXERINFO, &mi) == 0) { if (mixer->modify_counter != mi.modify_counter) { /* GST_LOG ("processing changes"); */ gst_oss4_mixer_watch_process_changes (mixer); mixer->modify_counter = mi.modify_counter; } else { /* GST_LOG ("no changes"); */ } } else { GST_WARNING_OBJECT (mixer, "MIXERINFO failed: %s", g_strerror (errno)); } /* we could move the _get_current_time out of the loop and just do the * add in ever iteration, which would be less exact, but who cares */ g_get_current_time (&tv); g_time_val_add (&tv, GST_OSS4_MIXER_WATCH_INTERVAL * 1000); (void) g_cond_timed_wait (mixer->watch_cond, GST_OBJECT_GET_LOCK (mixer), &tv); } GST_OBJECT_UNLOCK (mixer); GST_DEBUG_OBJECT (mixer, "watch thread done"); gst_object_unref (mixer); return NULL; } /* call with object lock held */ static void gst_oss4_mixer_wake_up_watch_task (GstOss4Mixer * mixer) { GST_LOG_OBJECT (mixer, "signalling watch thread to wake up"); g_cond_signal (mixer->watch_cond); } static void gst_oss4_mixer_stop_watch_task (GstOss4Mixer * mixer) { if (mixer->watch_thread) { GST_OBJECT_LOCK (mixer); mixer->watch_shutdown = TRUE; GST_LOG_OBJECT (mixer, "signalling watch thread to stop"); g_cond_signal (mixer->watch_cond); GST_OBJECT_UNLOCK (mixer); GST_LOG_OBJECT (mixer, "waiting for watch thread to join"); g_thread_join (mixer->watch_thread); GST_DEBUG_OBJECT (mixer, "watch thread stopped"); mixer->watch_thread = NULL; } if (mixer->watch_cond) { g_cond_free (mixer->watch_cond); mixer->watch_cond = NULL; } } static void gst_oss4_mixer_start_watch_task (GstOss4Mixer * mixer) { GError *err = NULL; mixer->watch_cond = g_cond_new (); mixer->watch_shutdown = FALSE; mixer->watch_thread = g_thread_create (gst_oss4_mixer_watch_thread, gst_object_ref (mixer), TRUE, &err); if (mixer->watch_thread == NULL) { GST_ERROR_OBJECT (mixer, "Could not create watch thread: %s", err->message); g_cond_free (mixer->watch_cond); mixer->watch_cond = NULL; g_error_free (err); } } static GstStateChangeReturn gst_oss4_mixer_change_state (GstElement * element, GstStateChange transition) { GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS; GstOss4Mixer *mixer = GST_OSS4_MIXER (element); switch (transition) { case GST_STATE_CHANGE_NULL_TO_READY: if (!gst_oss4_mixer_open (mixer, FALSE)) return GST_STATE_CHANGE_FAILURE; gst_oss4_mixer_start_watch_task (mixer); break; default: break; } ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition); if (ret == GST_STATE_CHANGE_FAILURE) return ret; switch (transition) { case GST_STATE_CHANGE_READY_TO_NULL: gst_oss4_mixer_stop_watch_task (mixer); gst_oss4_mixer_close (mixer); break; default: break; } return ret; } /* === GstMixer interface === */ static inline gboolean gst_oss4_mixer_contains_track (GstMixer * mixer, GstMixerTrack * track) { return (g_list_find (GST_OSS4_MIXER (mixer)->tracks, track) != NULL); } static inline gboolean gst_oss4_mixer_contains_options (GstMixer * mixer, GstMixerOptions * options) { return (g_list_find (GST_OSS4_MIXER (mixer)->tracks, options) != NULL); } static void gst_oss4_mixer_post_mixer_changed_msg (GstOss4Mixer * mixer) { /* only post mixer-changed message once */ if (!mixer->need_update) { gst_mixer_mixer_changed (GST_MIXER (mixer)); mixer->need_update = TRUE; } } /* call with mixer object lock held to serialise ioctl */ gboolean gst_oss4_mixer_get_control_val (GstOss4Mixer * mixer, GstOss4MixerControl * mc, int *val) { oss_mixer_value ossval = { 0, }; if (GST_OBJECT_TRYLOCK (mixer)) { GST_ERROR ("must be called with mixer lock held"); GST_OBJECT_UNLOCK (mixer); } ossval.dev = mc->mixext.dev; ossval.ctrl = mc->mixext.ctrl; ossval.timestamp = mc->mixext.timestamp; if (ioctl (mixer->fd, SNDCTL_MIX_READ, &ossval) == -1) { if (errno == EIDRM) { GST_DEBUG_OBJECT (mixer, "MIX_READ failed: mixer interface has changed"); gst_oss4_mixer_post_mixer_changed_msg (mixer); } else { GST_WARNING_OBJECT (mixer, "MIX_READ failed: %s", g_strerror (errno)); } *val = 0; mc->last_val = 0; return FALSE; } *val = ossval.value; mc->last_val = ossval.value; GST_LOG_OBJECT (mixer, "got value 0x%08x from %s)", *val, mc->mixext.extname); return TRUE; } /* call with mixer object lock held to serialise ioctl */ gboolean gst_oss4_mixer_set_control_val (GstOss4Mixer * mixer, GstOss4MixerControl * mc, int val) { oss_mixer_value ossval = { 0, }; ossval.dev = mc->mixext.dev; ossval.ctrl = mc->mixext.ctrl; ossval.timestamp = mc->mixext.timestamp; ossval.value = val; if (GST_OBJECT_TRYLOCK (mixer)) { GST_ERROR ("must be called with mixer lock held"); GST_OBJECT_UNLOCK (mixer); } if (ioctl (mixer->fd, SNDCTL_MIX_WRITE, &ossval) == -1) { if (errno == EIDRM) { GST_LOG_OBJECT (mixer, "MIX_WRITE failed: mixer interface has changed"); gst_oss4_mixer_post_mixer_changed_msg (mixer); } else { GST_WARNING_OBJECT (mixer, "MIX_WRITE failed: %s", g_strerror (errno)); } return FALSE; } mc->last_val = val; GST_LOG_OBJECT (mixer, "set value 0x%08x on %s", val, mc->mixext.extname); return TRUE; } #if 0 static gchar * gst_oss4_mixer_control_get_pretty_name (GstOss4MixerControl * mc) { gchar *name; const gchar *name, *u; /* "The id field is the original name given by the driver when it called * mixer_ext_create_control. This name can be used by fully featured GUI * mixers. However this name should be downshifted and cut before the last * underscore ("_") to get the proper name. For example mixer control name * created as "MYDRV_MAINVOL" will become just "mainvol" after this * transformation." */ name = mc->mixext.extname; u = MAX (strrchr (name, '_'), strrchr (name, '.')); if (u != NULL) name = u + 1; /* maybe capitalize the first letter? */ return g_ascii_strdown (name, -1); /* the .id thing doesn't really seem to work right, ie. for some sliders * it's just '-' so you have to use the name of the parent control etc. * let's not use it for now, much too painful. */ if (g_str_has_prefix (mc->mixext.extname, "misc.")) name = g_strdup (mc->mixext.extname + 5); else name = g_strdup (mc->mixext.extname); /* chop off trailing digit (only one for now) */ if (strlen (name) > 0 && g_ascii_isdigit (name[strlen (name) - 1])) name[strlen (name) - 1] = '\0'; g_strdelimit (name, ".", ' '); return name; } #endif /* these translations are a bit ad-hoc and horribly incomplete; it is not * really going to work this way with all the different chipsets and drivers. * We also use these for translating option values. */ static struct { const gchar oss_name[32]; const gchar *label; } labels[] = { { "volume", N_("Volume")}, { "master", N_("Master")}, { "front", N_("Front")}, { "rear", N_("Rear")}, { "headphones", N_("Headphones")}, { "center", N_("Center")}, { "lfe", N_("LFE")}, { "surround", N_("Surround")}, { "side", N_("Side")}, { "speaker", N_("Built-in Speaker")}, { "aux1-out", N_("AUX 1 Out")}, { "aux2-out", N_("AUX 2 Out")}, { "aux-out", N_("AUX Out")}, { "bass", N_("Bass")}, { "treble", N_("Treble")}, { "3d-depth", N_("3D Depth")}, { "3d-center", N_("3D Center")}, { "3d-enhance", N_("3D Enhance")}, { "phone", N_("Telephone")}, { "mic", N_("Microphone")}, { "line-out", N_("Line Out")}, { "line-in", N_("Line In")}, { "linein", N_("Line In")}, { "cd", N_("Internal CD")}, { "video", N_("Video In")}, { "aux1-in", N_("AUX 1 In")}, { "aux2-in", N_("AUX 2 In")}, { "aux-in", N_("AUX In")}, { "pcm", N_("PCM")}, { "record-gain", N_("Record Gain")}, { "igain", N_("Record Gain")}, { "ogain", N_("Output Gain")}, { "micboost", N_("Microphone Boost")}, { "loopback", N_("Loopback")}, { "diag", N_("Diagnostic")}, { "loudness", N_("Bass Boost")}, { "outputs", N_("Playback Ports")}, { "input", N_("Input")}, { "inputs", N_("Record Source")}, { "record-source", N_("Record Source")}, { "monitor-source", N_("Monitor Source")}, { "beep", N_("Keyboard Beep")}, { "monitor-gain", N_("Monitor")}, { "stereo-simulate", N_("Simulate Stereo")}, { "stereo", N_("Stereo")}, { "multich", N_("Surround Sound")}, { "mic-gain", N_("Microphone Gain")}, { "speaker-source", N_("Speaker Source")}, { "mic-source", N_("Microphone Source")}, { "jack", N_("Jack")}, { "center/lfe", N_("Center / LFE")}, { "stereo-mix", N_("Stereo Mix")}, { "mono-mix", N_("Mono Mix")}, { "input-mix", N_("Input Mix")}, { "spdif-in", N_("SPDIF In")}, { "spdif-out", N_("SPDIF Out")}, { "mic1", N_("Microphone 1")}, { "mic2", N_("Microphone 2")}, { "digital-out", N_("Digital Out")}, { "digital-in", N_("Digital In")}, { "hdmi", N_("HDMI")}, { "modem", N_("Modem")}, { "handset", N_("Handset")}, { "other", N_("Other")}, { "stereo", N_("Stereo")}, { "none", N_("None")}, { "on", N_("On")}, { "off", N_("Off")}, { "mute", N_("Mute")}, { "fast", N_("Fast")}, { "very-low", N_("Very Low")}, { "low", N_("Low")}, { "medium", N_("Medium")}, { "high", N_("High")}, { "very-high", N_("Very High")}, { "high+", N_("Very High")}, { "production", N_("Production")}, { "fp-mic", N_("Front Panel Microphone")}, { "fp-linein", N_("Front Panel Line In")}, { "fp-headphones", N_("Front Panel Headphones")}, { "fp-lineout", N_("Front Panel Line Out")}, { "green", N_("Green Connector")}, { "pink", N_("Pink Connector")}, { "blue", N_("Blue Connector")}, { "white", N_("White Connector")}, { "black", N_("Black Connector")}, { "gray", N_("Gray Connector")}, { "orange", N_("Orange Connector")}, { "red", N_("Red Connector")}, { "yellow", N_("Yellow Connector")}, { "fp-green", N_("Green Front Panel Connector")}, { "fp-pink", N_("Pink Front Panel Connector")}, { "fp-blue", N_("Blue Front Panel Connector")}, { "fp-white", N_("White Front Panel Connector")}, { "fp-black", N_("Black Front Panel Connector")}, { "fp-gray", N_("Gray Front Panel Connector")}, { "fp-orange", N_("Orange Front Panel Connector")}, { "fp-red", N_("Red Front Panel Connector")}, { "fp-yellow", N_("Yellow Front Panel Connector")}, { "spread", N_("Spread Output")}, { "downmix", N_("Downmix")}, /* FIXME translate Audigy NX USB labels) */ /* { "rec.src", N_("Record Source") }, { "output.mute", N_("Mute output") } headph (Controller group) headph.src (Enumeration control) headph.mute (On/Off switch) digital2 (Controller group) digital2.src (Enumeration control) digital2.mute (On/Off switch) digital (Controller group) digital.mute1 (On/Off switch) digital.vol (Controller group) digital.vol.front (Stereo slider (0-255)) digital.vol.surr (Stereo slider (0-255)) digital.vol.c/l (Stereo slider (0-255)) digital.vol.center (Stereo slider (0-255)) digital.mute2 (On/Off switch) digital.vol (Stereo slider (0-255)) line (Controller group) line.mute (On/Off switch) line.vol (Stereo slider (0-255)) play-altset (Enumeration control) rec-altset (Enumeration control) */ }; /* Decent i18n is pretty much impossible with OSS's way of providing us with * mixer labels (and the fact that they are pretty much random), but that * doesn't mean we shouldn't at least try. */ static gchar * gst_oss4_mixer_control_get_translated_name (GstOss4MixerControl * mc) { gchar name[128] = { 0, }; gchar vmix_str[32] = { '\0', }; gchar *ptr; int dummy, i; int num = -1; gboolean function_suffix = FALSE; /* main virtual mixer controls (we hide the stream volumes) */ if (sscanf (mc->mixext.extname, "vmix%d-%32c", &dummy, vmix_str) == 2) { if (strcmp (vmix_str, "src") == 0) return g_strdup (_("Virtual Mixer Input")); else if (strcmp (vmix_str, "vol") == 0) return g_strdup (_("Virtual Mixer Output")); else if (strcmp (vmix_str, "channels") == 0) return g_strdup (_("Virtual Mixer Channels")); } g_strlcpy (name, mc->mixext.extname, sizeof (name)); /* we deal with either "connector." or "jack." */ if ((g_str_has_prefix (name, "connector.")) || (g_str_has_prefix (name, "jack."))) { ptr = strchr (mc->mixext.extname, '.'); ptr++; g_strlcpy (name, ptr, sizeof (name)); } /* special handling for jack retasking suffixes */ if (g_str_has_suffix (name, ".function") || g_str_has_suffix (name, ".mode")) { function_suffix = TRUE; ptr = strrchr (name, '.'); *ptr = 0; } /* parse off trailing numbers */ i = strlen (name); while ((i > 0) && (g_ascii_isdigit (name[i - 1]))) { i--; } /* the check catches the case where the control name is just a number */ if ((i > 0) && (name[i] != '\0')) { num = atoi (name + i); name[i] = '\0'; } /* look for a match, progressively skipping '.' delimited prefixes as we go */ ptr = name; do { if (*ptr == '.') ptr++; for (i = 0; i < G_N_ELEMENTS (labels); ++i) { if (g_strcasecmp (ptr, labels[i].oss_name) == 0) { g_strlcpy (name, _(labels[i].label), sizeof (name)); goto append_suffixes; } } } while ((ptr = strchr (ptr, '.')) != NULL); /* failing that, just replace periods with spaces */ g_strdelimit (name, ".", ' '); append_suffixes: if (num > -1) { if (function_suffix) { /* TRANSLATORS: name + number of a volume mixer control */ return g_strdup_printf (_("%s %d Function"), name, num); } else { return g_strdup_printf ("%s %d", name, num); } } else { if (function_suffix) { /* TRANSLATORS: name of a volume mixer control */ return g_strdup_printf (_("%s Function"), name); } else { return g_strdup (name); } } } static const gchar * gst_oss4_mixer_control_get_translated_option (const gchar * name) { int i; for (i = 0; i < G_N_ELEMENTS (labels); ++i) { if (g_strcasecmp (name, labels[i].oss_name) == 0) { return _(labels[i].label); } } return (name); } #ifndef GST_DISABLE_GST_DEBUG static const gchar * mixer_ext_type_get_name (gint type) { switch (type) { case MIXT_DEVROOT: return "Device root entry"; case MIXT_GROUP: return "Controller group"; case MIXT_ONOFF: return "On/Off switch"; case MIXT_ENUM: return "Enumeration control"; case MIXT_MONOSLIDER: return "Mono slider (0-255)"; case MIXT_STEREOSLIDER: return "Stereo slider (0-255)"; case MIXT_MESSAGE: return "Textual message"; /* whatever this is */ case MIXT_MONOVU: return "Mono VU meter value"; case MIXT_STEREOVU: return "Stereo VU meter value"; case MIXT_MONOPEAK: return "Mono VU meter peak value"; case MIXT_STEREOPEAK: return "Stereo VU meter peak value"; case MIXT_RADIOGROUP: return "Radio button group"; case MIXT_MARKER: /* Separator between normal and extension entries */ return "Separator"; case MIXT_VALUE: return "Decimal value entry"; case MIXT_HEXVALUE: return "Hex value entry"; case MIXT_SLIDER: return "Mono slider (31-bit value range)"; case MIXT_3D: return "3D"; /* what's this? */ case MIXT_MONOSLIDER16: return "Mono slider (0-32767)"; case MIXT_STEREOSLIDER16: return "Stereo slider (0-32767)"; case MIXT_MUTE: return "Mute switch"; default: break; } return "unknown"; } #endif /* GST_DISABLE_GST_DEBUG */ #ifndef GST_DISABLE_GST_DEBUG static const gchar * mixer_ext_flags_get_string (gint flags) { struct { gint flag; gchar nick[16]; } all_flags[] = { /* first the important ones */ { MIXF_MAINVOL, "MAINVOL"}, { MIXF_PCMVOL, "PCMVOL"}, { MIXF_RECVOL, "RECVOL"}, { MIXF_MONVOL, "MONVOL"}, { MIXF_DESCR, "DESCR"}, /* now the rest in the right order */ { MIXF_READABLE, "READABLE"}, { MIXF_WRITEABLE, "WRITABLE"}, { MIXF_POLL, "POLL"}, { MIXF_HZ, "HZ"}, { MIXF_STRING, "STRING"}, { MIXF_DYNAMIC, "DYNAMIC"}, { MIXF_OKFAIL, "OKFAIL"}, { MIXF_FLAT, "FLAT"}, { MIXF_LEGACY, "LEGACY"}, { MIXF_CENTIBEL, "CENTIBEL"}, { MIXF_DECIBEL, "DECIBEL"}, { MIXF_WIDE, "WIDE"} }; GString *s; GQuark q; gint i; if (flags == 0) return "None"; s = g_string_new (""); for (i = 0; i < G_N_ELEMENTS (all_flags); ++i) { if ((flags & all_flags[i].flag)) { if (s->len > 0) g_string_append (s, " | "); g_string_append (s, all_flags[i].nick); flags &= ~all_flags[i].flag; /* unset */ } } /* unknown flags? */ if (flags != 0) { if (s->len > 0) g_string_append (s, " | "); g_string_append (s, "???"); } /* we'll just put it into the global quark table (cheeky, eh?) */ q = g_quark_from_string (s->str); g_string_free (s, TRUE); return g_quark_to_string (q); } #endif /* GST_DISABLE_GST_DEBUG */ #ifndef GST_DISABLE_GST_DEBUG static void gst_oss4_mixer_control_dump_tree (GstOss4MixerControl * mc, gint depth) { GList *c; gchar spaces[64]; gint i; depth = MIN (sizeof (spaces) - 1, depth); for (i = 0; i < depth; ++i) spaces[i] = ' '; spaces[i] = '\0'; GST_LOG ("%s%s (%s)", spaces, mc->mixext.extname, mixer_ext_type_get_name (mc->mixext.type)); for (c = mc->children; c != NULL; c = c->next) { GstOss4MixerControl *child_mc = (GstOss4MixerControl *) c->data; gst_oss4_mixer_control_dump_tree (child_mc, depth + 2); } } #endif /* GST_DISABLE_GST_DEBUG */ static GList * gst_oss4_mixer_get_controls (GstOss4Mixer * mixer) { GstOss4MixerControl *root_mc = NULL; oss_mixerinfo mi = { 0, }; GList *controls = NULL; GList *l; guint i; /* Get info for currently open fd */ mi.dev = -1; if (ioctl (mixer->fd, SNDCTL_MIXERINFO, &mi) == -1) goto no_mixerinfo; if (mi.nrext <= 0) { GST_DEBUG ("mixer %s has no controls", mi.id); return NULL; } GST_INFO ("Reading controls for mixer %s", mi.id); for (i = 0; i < mi.nrext; ++i) { GstOss4MixerControl *mc; oss_mixext mix_ext = { 0, }; mix_ext.dev = mi.dev; mix_ext.ctrl = i; if (ioctl (mixer->fd, SNDCTL_MIX_EXTINFO, &mix_ext) == -1) { GST_DEBUG ("SNDCTL_MIX_EXTINFO failed on mixer %s, control %d: %s", mi.id, i, g_strerror (errno)); continue; } /* if this is the last one, save it for is-interface-up-to-date checking */ if (i == mi.nrext) mixer->last_mixext = mix_ext; mc = g_new0 (GstOss4MixerControl, 1); mc->mixext = mix_ext; /* both control_no and desc fields are pretty useless, ie. not always set, * if ever, so not listed here */ GST_INFO ("Control %d", mix_ext.ctrl); GST_INFO (" name : %s", mix_ext.extname); GST_INFO (" type : %s (%d)", mixer_ext_type_get_name (mix_ext.type), mix_ext.type); GST_INFO (" flags : %s (0x%04x)", mixer_ext_flags_get_string (mix_ext.flags), mix_ext.flags); GST_INFO (" parent : %d", mix_ext.parent); if (!MIXEXT_IS_ROOT (mix_ext)) { /* find parent (we assume it comes in the list before the child) */ for (l = controls; l != NULL; l = l->next) { GstOss4MixerControl *parent_mc = (GstOss4MixerControl *) l->data; if (parent_mc->mixext.ctrl == mix_ext.parent) { mc->parent = parent_mc; parent_mc->children = g_list_append (parent_mc->children, mc); break; } } if (mc->parent == NULL) { GST_ERROR_OBJECT (mixer, "couldn't find parent for control %d", i); g_free (mc); continue; } } else if (root_mc == NULL) { root_mc = mc; } else { GST_WARNING_OBJECT (mixer, "two root controls?!"); } controls = g_list_prepend (controls, mc); } #ifndef GST_DISABLE_GST_DEBUG gst_oss4_mixer_control_dump_tree (root_mc, 0); #endif return g_list_reverse (controls); /* ERRORS */ no_mixerinfo: { GST_WARNING ("SNDCTL_MIXERINFO failed on mixer device %s: %s", mi.id, g_strerror (errno)); return NULL; } } static void gst_oss4_mixer_controls_guess_master (GstOss4Mixer * mixer, const GList * controls) { GstOss4MixerControl *master_mc = NULL; const GList *l; for (l = controls; l != NULL; l = l->next) { GstOss4MixerControl *mc = (GstOss4MixerControl *) l->data; /* do we need to check if it's a slider type here? */ if ((mc->mixext.flags & MIXF_PCMVOL)) { GST_INFO_OBJECT (mixer, "First PCM control: %s", mc->mixext.extname); master_mc = mc; break; } if (((mc->mixext.flags & MIXF_MAINVOL)) && master_mc == NULL) { GST_INFO_OBJECT (mixer, "First main volume control: %s", mc->mixext.extname); master_mc = mc; } } if (master_mc != NULL) master_mc->is_master = TRUE; } /* type: -1 for all types, otherwise just return siblings with requested type */ static GList * gst_oss4_mixer_control_get_siblings (GstOss4MixerControl * mc, gint type) { GList *s, *siblings = NULL; if (mc->parent == NULL) return NULL; for (s = mc->parent->children; s != NULL; s = s->next) { GstOss4MixerControl *sibling = (GstOss4MixerControl *) s->data; if (mc != sibling && (type < 0 || sibling->mixext.type == type)) siblings = g_list_append (siblings, sibling); } return siblings; } static void gst_oss4_mixer_controls_find_sliders (GstOss4Mixer * mixer, const GList * controls) { const GList *l; for (l = controls; l != NULL; l = l->next) { GstOss4MixerControl *mc = (GstOss4MixerControl *) l->data; GList *s, *siblings; if (!MIXEXT_IS_SLIDER (mc->mixext) || mc->parent == NULL || mc->used) continue; mc->is_slider = TRUE; mc->used = TRUE; siblings = gst_oss4_mixer_control_get_siblings (mc, -1); /* Note: the names can be misleading and may not reflect the actual * hierarchy of the controls, e.g. it's possible that a slider is called * connector.green and the mute control then connector.green.mute, but * both controls are in fact siblings and both children of the group * 'green' instead of mute being a child of connector.green as the naming * would seem to suggest */ GST_LOG ("Slider: %s, parent=%s, %d siblings", mc->mixext.extname, mc->parent->mixext.extname, g_list_length (siblings)); for (s = siblings; s != NULL; s = s->next) { GstOss4MixerControl *sibling = (GstOss4MixerControl *) s->data; GST_LOG (" %s (%s)", sibling->mixext.extname, mixer_ext_type_get_name (sibling->mixext.type)); if (sibling->mixext.type == MIXT_MUTE || g_str_has_suffix (sibling->mixext.extname, ".mute")) { /* simple case: slider with single mute sibling. We assume the .mute * suffix in the name won't change - can't really do much else anyway */ if (sibling->mixext.type == MIXT_ONOFF || sibling->mixext.type == MIXT_MUTE) { GST_LOG (" mute control for %s is %s", mc->mixext.extname, sibling->mixext.extname); mc->mute = sibling; sibling->used = TRUE; } /* a group of .mute controls. We assume they are all switches here */ if (sibling->mixext.type == MIXT_GROUP) { GList *m; for (m = sibling->children; m != NULL; m = m->next) { GstOss4MixerControl *grouped_sibling = m->data; if (grouped_sibling->mixext.type == MIXT_ONOFF || grouped_sibling->mixext.type == MIXT_MUTE) { GST_LOG (" %s is grouped mute control for %s", grouped_sibling->mixext.extname, mc->mixext.extname); mc->mute_group = g_list_append (mc->mute_group, grouped_sibling); } } GST_LOG (" %s has a group of %d mute controls", mc->mixext.extname, g_list_length (mc->mute_group)); /* we don't mark the individual mute controls as used, only the * group control, as we still want individual switches for the * individual controls */ sibling->used = TRUE; } } } g_list_free (siblings); } } /* should be called with the mixer object lock held because of the ioctl; * returns TRUE if the list was read the first time or modified */ static gboolean gst_oss4_mixer_enum_control_update_enum_list (GstOss4Mixer * mixer, GstOss4MixerControl * mc) { oss_mixer_enuminfo ei = { 0, }; guint num_existing = 0; int i; /* count and existing values */ while (mc->enum_vals != NULL && mc->enum_vals[num_existing] != 0) ++num_existing; ei.dev = mc->mixext.dev; ei.ctrl = mc->mixext.ctrl; /* if we have create a generic list with numeric IDs already and the * number of values hasn't changed, then there's not much to do here */ if (mc->no_list && mc->enum_vals != NULL && num_existing == mc->mixext.maxvalue) { return FALSE; } /* if we have a list and it doesn't change, there's nothing to do either */ if (mc->enum_vals != NULL && mc->enum_version == 0) return FALSE; if (ioctl (mixer->fd, SNDCTL_MIX_ENUMINFO, &ei) == -1) { g_free (mc->enum_vals); mc->enum_vals = g_new0 (GQuark, mc->mixext.maxvalue + 1); GST_DEBUG ("no enum info available, creating numeric values from 0-%d", mc->mixext.maxvalue - 1); /* "It is possible that some enum controls don't have any name list * available. In this case the application should automatically generate * list of numbers (0 to N-1)" */ for (i = 0; i < mc->mixext.maxvalue; ++i) { gchar num_str[8]; g_snprintf (num_str, sizeof (num_str), "%d", i); mc->enum_vals[i] = g_quark_from_string (num_str); } mc->enum_version = 0; /* the only way to change is via maxvalue */ } else { /* old list same as current list? */ if (mc->enum_vals != NULL && mc->enum_version == ei.version) return FALSE; /* no list yet, or the list has changed */ GST_LOG ("%s", (mc->enum_vals) ? "enum list has changed" : "reading list"); if (ei.nvalues != mc->mixext.maxvalue) { GST_WARNING_OBJECT (mixer, "Enum: %s, nvalues %d != maxvalue %d", mc->mixext.extname, ei.nvalues, mc->mixext.maxvalue); mc->mixext.maxvalue = MIN (ei.nvalues, mc->mixext.maxvalue); } mc->mixext.maxvalue = MIN (mc->mixext.maxvalue, OSS_ENUM_MAXVALUE); g_free (mc->enum_vals); mc->enum_vals = g_new0 (GQuark, mc->mixext.maxvalue + 1); for (i = 0; i < mc->mixext.maxvalue; ++i) { GST_LOG (" %s", ei.strings + ei.strindex[i]); mc->enum_vals[i] = g_quark_from_string (gst_oss4_mixer_control_get_translated_option (ei.strings + ei.strindex[i])); } } return TRUE; } static void gst_oss4_mixer_controls_find_enums (GstOss4Mixer * mixer, const GList * controls) { const GList *l; for (l = controls; l != NULL; l = l->next) { GstOss4MixerControl *mc = (GstOss4MixerControl *) l->data; if (mc->mixext.type != MIXT_ENUM || mc->used) continue; mc->is_enum = TRUE; mc->used = TRUE; /* Note: enums are special: for most controls, the maxvalue is inclusive, * but for enum controls it's actually exclusive (boggle), so that * mixext.maxvalue = num_values */ GST_LOG ("Enum: %s, parent=%s, num_enums=%d", mc->mixext.extname, mc->parent->mixext.extname, mc->mixext.maxvalue); gst_oss4_mixer_enum_control_update_enum_list (mixer, mc); } } static void gst_oss4_mixer_controls_find_switches (GstOss4Mixer * mixer, const GList * controls) { const GList *l; for (l = controls; l != NULL; l = l->next) { GstOss4MixerControl *mc = (GstOss4MixerControl *) l->data; if (mc->used) continue; if (mc->mixext.type != MIXT_ONOFF && mc->mixext.type != MIXT_MUTE) continue; mc->is_switch = TRUE; mc->used = TRUE; GST_LOG ("Switch: %s, parent=%s", mc->mixext.extname, mc->parent->mixext.extname); } } static void gst_oss4_mixer_controls_find_virtual (GstOss4Mixer * mixer, const GList * controls) { const GList *l; for (l = controls; l != NULL; l = l->next) { GstOss4MixerControl *mc = (GstOss4MixerControl *) l->data; /* or sscanf (mc->mixext.extname, "vmix%d-out.", &n) == 1 ? */ /* for now we just flag all virtual controls with managed labels, those * are really more appropriate for a pavucontrol-type control thing than * the (more hardware-oriented) mixer interface */ if (mc->mixext.id[0] == '@') { mc->is_virtual = TRUE; GST_LOG ("%s is virtual control with managed label", mc->mixext.extname); } } } static void gst_oss4_mixer_controls_dump_unused (GstOss4Mixer * mixer, const GList * controls) { const GList *l; for (l = controls; l != NULL; l = l->next) { GstOss4MixerControl *mc = (GstOss4MixerControl *) l->data; if (mc->used) continue; switch (mc->mixext.type) { case MIXT_DEVROOT: case MIXT_GROUP: case MIXT_MESSAGE: case MIXT_MONOVU: case MIXT_STEREOVU: case MIXT_MONOPEAK: case MIXT_STEREOPEAK: case MIXT_MARKER: continue; /* not interested in these types of controls */ case MIXT_MONODB: case MIXT_STEREODB: GST_DEBUG ("obsolete control type %d", mc->mixext.type); continue; case MIXT_MONOSLIDER: case MIXT_STEREOSLIDER: case MIXT_SLIDER: case MIXT_MONOSLIDER16: case MIXT_STEREOSLIDER16: /* this shouldn't happen */ GST_ERROR ("unused slider control?!"); continue; case MIXT_VALUE: case MIXT_HEXVALUE: /* value entry, not sure what to do with that, skip for now */ continue; case MIXT_ONOFF: case MIXT_MUTE: case MIXT_ENUM: case MIXT_3D: case MIXT_RADIOGROUP: GST_DEBUG ("FIXME: handle %s %s", mixer_ext_type_get_name (mc->mixext.type), mc->mixext.extname); break; default: GST_WARNING ("unknown control type %d", mc->mixext.type); continue; } } } static GList * gst_oss4_mixer_create_tracks (GstOss4Mixer * mixer, const GList * controls) { const GList *c; GList *tracks = NULL; for (c = controls; c != NULL; c = c->next) { GstOss4MixerControl *mc = (GstOss4MixerControl *) c->data; GstMixerTrack *track = NULL; if (mc->is_virtual) continue; if (mc->is_slider) { track = gst_oss4_mixer_slider_new (mixer, mc); } else if (mc->is_enum) { track = gst_oss4_mixer_enum_new (mixer, mc); } else if (mc->is_switch) { track = gst_oss4_mixer_switch_new (mixer, mc); } if (track == NULL) continue; track->label = gst_oss4_mixer_control_get_translated_name (mc); track->flags = 0; GST_LOG ("translated label: %s [%s] = %s", track->label, mc->mixext.id, track->label); /* This whole 'a track is either INPUT or OUTPUT' model is just flawed, * esp. if a slider's role can be changed on the fly, like when you change * function of a connector. What should we do in that case? Change the flag * and make the app rebuild the interface? Ignore it? */ if (mc->mixext.flags & (MIXF_MAINVOL | MIXF_PCMVOL)) { track->flags = GST_MIXER_TRACK_OUTPUT | GST_MIXER_TRACK_WHITELIST; } else if (mc->mixext.flags & MIXF_RECVOL) { /* record gain whitelisted by default */ track->flags = GST_MIXER_TRACK_INPUT | GST_MIXER_TRACK_NO_RECORD | GST_MIXER_TRACK_WHITELIST; } else if (mc->mixext.flags & MIXF_MONVOL) { /* monitor sources not whitelisted by default */ track->flags = GST_MIXER_TRACK_INPUT | GST_MIXER_TRACK_NO_RECORD; } /* * The kernel may give us better clues about the scope of a control. * If so, try to honor it. */ switch (mc->mixext.desc & MIXEXT_SCOPE_MASK) { case MIXEXT_SCOPE_INPUT: case MIXEXT_SCOPE_RECSWITCH: track->flags |= GST_MIXER_TRACK_INPUT | GST_MIXER_TRACK_NO_RECORD | GST_MIXER_TRACK_WHITELIST; break; case MIXEXT_SCOPE_MONITOR: /* don't whitelist monitor tracks by default */ track->flags |= GST_MIXER_TRACK_INPUT | GST_MIXER_TRACK_NO_RECORD; break; case MIXEXT_SCOPE_OUTPUT: track->flags = GST_MIXER_TRACK_OUTPUT | GST_MIXER_TRACK_WHITELIST; break; } if (mc->is_master) { track->flags |= GST_MIXER_TRACK_OUTPUT; } if (mc->is_master) track->flags |= GST_MIXER_TRACK_MASTER; tracks = g_list_append (tracks, track); } return tracks; } static void gst_oss4_mixer_update_tracks (GstOss4Mixer * mixer) { GList *controls, *tracks; /* read and process controls */ controls = gst_oss4_mixer_get_controls (mixer); gst_oss4_mixer_controls_guess_master (mixer, controls); gst_oss4_mixer_controls_find_sliders (mixer, controls); gst_oss4_mixer_controls_find_enums (mixer, controls); gst_oss4_mixer_controls_find_switches (mixer, controls); gst_oss4_mixer_controls_find_virtual (mixer, controls); gst_oss4_mixer_controls_dump_unused (mixer, controls); tracks = gst_oss4_mixer_create_tracks (mixer, controls); /* free old tracks and controls */ gst_oss4_mixer_free_tracks (mixer); /* replace old with new */ mixer->tracks = tracks; mixer->controls = controls; } static const GList * gst_oss4_mixer_list_tracks (GstMixer * mixer_iface) { GstOss4Mixer *mixer = GST_OSS4_MIXER (mixer_iface); g_return_val_if_fail (mixer != NULL, NULL); g_return_val_if_fail (GST_OSS4_MIXER_IS_OPEN (mixer), NULL); GST_OBJECT_LOCK (mixer); /* Do a read on the last control to check if the interface has changed */ if (!mixer->need_update && mixer->last_mixext.ctrl > 0) { GstOss4MixerControl mc = { {0,} , }; int val; mc.mixext = mixer->last_mixext; gst_oss4_mixer_get_control_val (mixer, &mc, &val); } if (mixer->need_update || mixer->tracks == NULL) { gst_oss4_mixer_update_tracks (mixer); mixer->need_update = FALSE; } GST_OBJECT_UNLOCK (mixer); return (const GList *) mixer->tracks; } static void gst_oss4_mixer_set_volume (GstMixer * mixer, GstMixerTrack * track, gint * volumes) { GstOss4Mixer *oss; g_return_if_fail (mixer != NULL); g_return_if_fail (GST_IS_OSS4_MIXER (mixer)); g_return_if_fail (GST_OSS4_MIXER_IS_OPEN (mixer)); g_return_if_fail (gst_oss4_mixer_contains_track (mixer, track)); g_return_if_fail (volumes != NULL); oss = GST_OSS4_MIXER (mixer); GST_OBJECT_LOCK (oss); if (GST_IS_OSS4_MIXER_SLIDER (track)) { gst_oss4_mixer_slider_set_volume (GST_OSS4_MIXER_SLIDER (track), volumes); } GST_OBJECT_UNLOCK (oss); } static void gst_oss4_mixer_get_volume (GstMixer * mixer, GstMixerTrack * track, gint * volumes) { GstOss4Mixer *oss; g_return_if_fail (mixer != NULL); g_return_if_fail (GST_IS_OSS4_MIXER (mixer)); g_return_if_fail (GST_OSS4_MIXER_IS_OPEN (mixer)); g_return_if_fail (gst_oss4_mixer_contains_track (mixer, track)); g_return_if_fail (volumes != NULL); oss = GST_OSS4_MIXER (mixer); GST_OBJECT_LOCK (oss); memset (volumes, 0, track->num_channels * sizeof (gint)); if (GST_IS_OSS4_MIXER_SWITCH (track)) { gboolean enabled = FALSE; gst_oss4_mixer_switch_get (GST_OSS4_MIXER_SWITCH (track), &enabled); } if (GST_IS_OSS4_MIXER_SLIDER (track)) { gst_oss4_mixer_slider_get_volume (GST_OSS4_MIXER_SLIDER (track), volumes); } GST_OBJECT_UNLOCK (oss); } static void gst_oss4_mixer_set_record (GstMixer * mixer, GstMixerTrack * track, gboolean record) { GstOss4Mixer *oss; g_return_if_fail (mixer != NULL); g_return_if_fail (GST_IS_OSS4_MIXER (mixer)); g_return_if_fail (GST_OSS4_MIXER_IS_OPEN (mixer)); g_return_if_fail (gst_oss4_mixer_contains_track (mixer, track)); oss = GST_OSS4_MIXER (mixer); GST_OBJECT_LOCK (oss); if (GST_IS_OSS4_MIXER_SLIDER (track)) { gst_oss4_mixer_slider_set_record (GST_OSS4_MIXER_SLIDER (track), record); } else if (GST_IS_OSS4_MIXER_SWITCH (track)) { if ((track->flags & GST_MIXER_TRACK_INPUT)) { gst_oss4_mixer_switch_set (GST_OSS4_MIXER_SWITCH (track), record); } else { GST_WARNING_OBJECT (track, "set_record called on non-INPUT track"); } } GST_OBJECT_UNLOCK (oss); } static void gst_oss4_mixer_set_mute (GstMixer * mixer, GstMixerTrack * track, gboolean mute) { GstOss4Mixer *oss; g_return_if_fail (mixer != NULL); g_return_if_fail (GST_IS_OSS4_MIXER (mixer)); g_return_if_fail (GST_OSS4_MIXER_IS_OPEN (mixer)); g_return_if_fail (gst_oss4_mixer_contains_track (mixer, track)); oss = GST_OSS4_MIXER (mixer); GST_OBJECT_LOCK (oss); if (GST_IS_OSS4_MIXER_SLIDER (track)) { gst_oss4_mixer_slider_set_mute (GST_OSS4_MIXER_SLIDER (track), mute); } else if (GST_IS_OSS4_MIXER_SWITCH (track)) { gst_oss4_mixer_switch_set (GST_OSS4_MIXER_SWITCH (track), mute); } GST_OBJECT_UNLOCK (oss); } static void gst_oss4_mixer_set_option (GstMixer * mixer, GstMixerOptions * options, gchar * value) { GstOss4Mixer *oss; g_return_if_fail (mixer != NULL); g_return_if_fail (value != NULL); g_return_if_fail (GST_IS_OSS4_MIXER (mixer)); g_return_if_fail (GST_OSS4_MIXER_IS_OPEN (mixer)); g_return_if_fail (GST_IS_OSS4_MIXER_ENUM (options)); g_return_if_fail (gst_oss4_mixer_contains_options (mixer, options)); oss = GST_OSS4_MIXER (mixer); GST_OBJECT_LOCK (oss); if (!gst_oss4_mixer_enum_set_option (GST_OSS4_MIXER_ENUM (options), value)) { /* not much we can do here but wake up the watch thread early, so it * can do its thing and post messages if anything has changed */ gst_oss4_mixer_wake_up_watch_task (oss); } GST_OBJECT_UNLOCK (oss); } static const gchar * gst_oss4_mixer_get_option (GstMixer * mixer, GstMixerOptions * options) { GstOss4Mixer *oss; const gchar *current_val; g_return_val_if_fail (mixer != NULL, NULL); g_return_val_if_fail (GST_IS_OSS4_MIXER (mixer), NULL); g_return_val_if_fail (GST_OSS4_MIXER_IS_OPEN (mixer), NULL); g_return_val_if_fail (GST_IS_OSS4_MIXER_ENUM (options), NULL); g_return_val_if_fail (gst_oss4_mixer_contains_options (mixer, options), NULL); oss = GST_OSS4_MIXER (mixer); GST_OBJECT_LOCK (oss); current_val = gst_oss4_mixer_enum_get_option (GST_OSS4_MIXER_ENUM (options)); if (current_val == NULL) { /* not much we can do here but wake up the watch thread early, so it * can do its thing and post messages if anything has changed */ gst_oss4_mixer_wake_up_watch_task (oss); } GST_OBJECT_UNLOCK (oss); return current_val; } static GstMixerFlags gst_oss4_mixer_get_mixer_flags (GstMixer * mixer) { return GST_MIXER_FLAG_AUTO_NOTIFICATIONS | GST_MIXER_FLAG_HAS_WHITELIST | GST_MIXER_FLAG_GROUPING; } static void gst_oss4_mixer_interface_init (GstMixerClass * klass) { GST_MIXER_TYPE (klass) = GST_MIXER_HARDWARE; klass->list_tracks = gst_oss4_mixer_list_tracks; klass->set_volume = gst_oss4_mixer_set_volume; klass->get_volume = gst_oss4_mixer_get_volume; klass->set_mute = gst_oss4_mixer_set_mute; klass->set_record = gst_oss4_mixer_set_record; klass->set_option = gst_oss4_mixer_set_option; klass->get_option = gst_oss4_mixer_get_option; klass->get_mixer_flags = gst_oss4_mixer_get_mixer_flags; } /* Implement the horror that is GstImplementsInterface */ static gboolean gst_oss4_mixer_supported (GstImplementsInterface * iface, GType iface_type) { GstOss4Mixer *mixer; g_return_val_if_fail (iface_type == GST_TYPE_MIXER, FALSE); mixer = GST_OSS4_MIXER (iface); return GST_OSS4_MIXER_IS_OPEN (mixer); } static void gst_oss4_mixer_implements_interface_init (GstImplementsInterfaceClass * klass) { klass->supported = gst_oss4_mixer_supported; } static void gst_oss4_mixer_init_interfaces (GType type) { static const GInterfaceInfo implements_iface_info = { (GInterfaceInitFunc) gst_oss4_mixer_implements_interface_init, NULL, NULL, }; static const GInterfaceInfo mixer_iface_info = { (GInterfaceInitFunc) gst_oss4_mixer_interface_init, NULL, NULL, }; g_type_add_interface_static (type, GST_TYPE_IMPLEMENTS_INTERFACE, &implements_iface_info); g_type_add_interface_static (type, GST_TYPE_MIXER, &mixer_iface_info); gst_oss4_add_property_probe_interface (type); }