/* Copyright (C) 2001 CodeFactory AB * Copyright (C) 2001 Thomas Nyberg <thomas@codefactory.se> * Copyright (C) 2001-2002 Andy Wingo <apwingo@eos.ncsu.edu> * Copyright (C) 2003 Benjamin Otte <in7y118@public.uni-hamburg.de> * Copyright (C) 2005 Tim-Philipp Müller <tim centricular net> * * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. */ /* FIXME 0.11: suppress warnings for deprecated API such as GValueArray * with newer GLib versions (>= 2.31.0) */ #define GLIB_DISABLE_DEPRECATION_WARNINGS #ifdef HAVE_CONFIG_H #include "config.h" #endif #include "gstalsadeviceprobe.h" #if 0 G_LOCK_DEFINE_STATIC (probe_lock); static const GList * gst_alsa_device_property_probe_get_properties (GstPropertyProbe * probe) { GObjectClass *klass = G_OBJECT_GET_CLASS (probe); static GList *list = NULL; G_LOCK (probe_lock); if (!list) { GParamSpec *pspec; pspec = g_object_class_find_property (klass, "device"); list = g_list_append (NULL, pspec); } G_UNLOCK (probe_lock); return list; } static GList * gst_alsa_get_device_list (snd_pcm_stream_t stream) { snd_ctl_t *handle; int card, dev; snd_ctl_card_info_t *info; snd_pcm_info_t *pcminfo; gboolean mixer = (stream == -1); GList *list = NULL; if (stream == -1) stream = 0; snd_ctl_card_info_malloc (&info); snd_pcm_info_malloc (&pcminfo); card = -1; if (snd_card_next (&card) < 0 || card < 0) { /* no soundcard found */ GST_WARNING ("No soundcard found"); goto beach; } while (card >= 0) { gchar name[32]; g_snprintf (name, sizeof (name), "hw:%d", card); if (snd_ctl_open (&handle, name, 0) < 0) { goto next_card; } if (snd_ctl_card_info (handle, info) < 0) { snd_ctl_close (handle); goto next_card; } if (mixer) { list = g_list_append (list, g_strdup (name)); } else { dev = -1; while (1) { gchar *gst_device; snd_ctl_pcm_next_device (handle, &dev); if (dev < 0) break; snd_pcm_info_set_device (pcminfo, dev); snd_pcm_info_set_subdevice (pcminfo, 0); snd_pcm_info_set_stream (pcminfo, stream); if (snd_ctl_pcm_info (handle, pcminfo) < 0) { continue; } gst_device = g_strdup_printf ("hw:%d,%d", card, dev); list = g_list_append (list, gst_device); } } snd_ctl_close (handle); next_card: if (snd_card_next (&card) < 0) { break; } } beach: snd_ctl_card_info_free (info); snd_pcm_info_free (pcminfo); return list; } static void gst_alsa_device_property_probe_probe_property (GstPropertyProbe * probe, guint prop_id, const GParamSpec * pspec) { if (!g_str_equal (pspec->name, "device")) { G_OBJECT_WARN_INVALID_PROPERTY_ID (probe, prop_id, pspec); } } static gboolean gst_alsa_device_property_probe_needs_probe (GstPropertyProbe * probe, guint prop_id, const GParamSpec * pspec) { /* don't cache probed data */ return TRUE; } static GValueArray * gst_alsa_device_property_probe_get_values (GstPropertyProbe * probe, guint prop_id, const GParamSpec * pspec) { GstElementClass *klass; const GList *templates; snd_pcm_stream_t mode = -1; GValueArray *array; GValue value = { 0, }; GList *l, *list; if (!g_str_equal (pspec->name, "device")) { G_OBJECT_WARN_INVALID_PROPERTY_ID (probe, prop_id, pspec); return NULL; } klass = GST_ELEMENT_GET_CLASS (GST_ELEMENT (probe)); /* I'm pretty sure ALSA has a good way to do this. However, their cool * auto-generated documentation is pretty much useless if you try to * do function-wise look-ups. */ /* we assume one pad template at max [zero=mixer] */ templates = gst_element_class_get_pad_template_list (klass); if (templates) { if (GST_PAD_TEMPLATE_DIRECTION (templates->data) == GST_PAD_SRC) mode = SND_PCM_STREAM_CAPTURE; else mode = SND_PCM_STREAM_PLAYBACK; } list = gst_alsa_get_device_list (mode); if (list == NULL) { GST_LOG_OBJECT (probe, "No devices found"); return NULL; } array = g_value_array_new (g_list_length (list)); g_value_init (&value, G_TYPE_STRING); for (l = list; l != NULL; l = l->next) { GST_LOG_OBJECT (probe, "Found device: %s", (gchar *) l->data); g_value_take_string (&value, (gchar *) l->data); l->data = NULL; g_value_array_append (array, &value); } g_value_unset (&value); g_list_free (list); return array; } static void gst_alsa_property_probe_interface_init (GstPropertyProbeInterface * iface) { iface->get_properties = gst_alsa_device_property_probe_get_properties; iface->probe_property = gst_alsa_device_property_probe_probe_property; iface->needs_probe = gst_alsa_device_property_probe_needs_probe; iface->get_values = gst_alsa_device_property_probe_get_values; } void gst_alsa_type_add_device_property_probe_interface (GType type) { static const GInterfaceInfo probe_iface_info = { (GInterfaceInitFunc) gst_alsa_property_probe_interface_init, NULL, NULL, }; g_type_add_interface_static (type, GST_TYPE_PROPERTY_PROBE, &probe_iface_info); } #endif