/* GStreamer * Copyright (C) 2004 Benjamin Otte * * 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. */ #include #include "gstxine.h" #include #include #include #define GST_TYPE_XINE_AUDIO_SINK \ (gst_xine_audio_sink_get_type()) #define GST_XINE_AUDIO_SINK(obj) \ (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_XINE_AUDIO_SINK,GstXineAudioSink)) #define GST_XINE_AUDIO_SINK_GET_CLASS(obj) \ (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_XINE_AUDIO_SINK, GstXineAudioSinkClass)) #define GST_XINE_AUDIO_SINK_CLASS(klass) \ (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_XINE_AUDIO_SINK,GstXineAudioSinkClass)) #define GST_IS_XINE_AUDIO_SINK(obj) \ (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_XINE_AUDIO_SINK)) #define GST_IS_XINE_AUDIO_SINK_CLASS(klass) \ (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_XINE_AUDIO_SINK)) GType gst_xine_audio_sink_get_type (void); typedef struct _GstXineAudioSink GstXineAudioSink; typedef struct _GstXineAudioSinkClass GstXineAudioSinkClass; struct _GstXineAudioSink { GstXine parent; GstPad *sinkpad; ao_driver_t *driver; guint open; /* number of bytes per sample or 0 if driver not open */ }; struct _GstXineAudioSinkClass { GstXineClass parent_class; plugin_node_t *plugin_node; }; /** GstXineAudioSink ***********************************************************/ GST_BOILERPLATE (GstXineAudioSink, gst_xine_audio_sink, GstXine, GST_TYPE_XINE); static GstStateChangeReturn gst_xine_audio_sink_change_state (GstElement * element, GstStateChange transition); static void gst_xine_audio_sink_base_init (gpointer g_class) { } static void gst_xine_audio_sink_class_init (GstXineAudioSinkClass * klass) { GstElementClass *element = GST_ELEMENT_CLASS (klass); element->change_state = gst_xine_audio_sink_change_state; } static void gst_xine_audio_sink_init (GstXineAudioSink * xine, GstXineAudioSinkClass * g_class) { } static void gst_xine_audio_sink_chain (GstPad * pad, GstData * data) { GstXineAudioSink *xine = GST_XINE_AUDIO_SINK (gst_object_get_parent (GST_OBJECT (pad))); while (xine->driver->write (xine->driver, (guint16 *) GST_BUFFER_DATA (data), GST_BUFFER_SIZE (data) / xine->open) == 0); gst_data_unref (GST_DATA (data)); } static GstStateChangeReturn gst_xine_audio_sink_change_state (GstElement * element, GstStateChange transition) { GstXineAudioSink *xine = GST_XINE_AUDIO_SINK (element); audio_driver_class_t *driver = (audio_driver_class_t *) GST_XINE_AUDIO_SINK_GET_CLASS (xine)-> plugin_node->plugin_class; switch (transition) { case GST_STATE_CHANGE_NULL_TO_READY: if (driver == NULL) { xine_audio_port_t *port = xine_open_audio_driver (GST_XINE_GET_CLASS (xine)->xine, GST_XINE_AUDIO_SINK_GET_CLASS (xine)->plugin_node->info->id, NULL); if (!port) return GST_STATE_CHANGE_FAILURE; port->exit (port); driver = (audio_driver_class_t *) GST_XINE_AUDIO_SINK_GET_CLASS (xine)-> plugin_node->plugin_class; if (driver == NULL) return GST_STATE_CHANGE_FAILURE; } xine->driver = driver->open_plugin (driver, NULL); if (!xine->driver) return GST_STATE_CHANGE_FAILURE; break; case GST_STATE_CHANGE_READY_TO_PAUSED: break; case GST_STATE_CHANGE_PAUSED_TO_PLAYING: break; case GST_STATE_CHANGE_PLAYING_TO_PAUSED: break; case GST_STATE_CHANGE_PAUSED_TO_READY: if (xine->open != 0) xine->driver->close (xine->driver); xine->open = 0; break; case GST_STATE_CHANGE_READY_TO_NULL: xine->driver->exit (xine->driver); xine->driver = NULL; break; default: GST_ERROR_OBJECT (element, "invalid state change"); break; } return GST_CALL_PARENT_WITH_DEFAULT (GST_ELEMENT_CLASS, change_state, (element), GST_STATE_CHANGE_SUCCESS); } static GstCaps * _xine_audio_sink_get_caps (GstPad * pad) { GstXineAudioSink *xine = GST_XINE_AUDIO_SINK (gst_object_get_parent (GST_OBJECT (pad))); GstCaps *caps, *ret = gst_caps_new_empty (); guint32 capa, channels; if (!xine->driver) return gst_caps_copy (gst_pad_get_pad_template_caps (pad)); capa = xine->driver->get_capabilities (xine->driver); channels = capa & (AO_CAP_MODE_MONO | AO_CAP_MODE_STEREO); if (channels == 0) { /* neither mono nor stereo supported, die */ return ret; } /* this loop is messy */ capa &= AO_CAP_8BITS; do { if (capa & AO_CAP_8BITS) { caps = gst_caps_from_string ("audio/x-raw-int, " "signed = (boolean) FALSE, " "width = (int) 8, " "depth = (int) 8, " "rate = (int) [ 8000, 192000 ]"); capa &= ~AO_CAP_8BITS; } else { caps = gst_caps_from_string ("audio/x-raw-int, " "endianness = (int) BYTE_ORDER, " "signed = (boolean) TRUE, " "width = (int) 16, " "depth = (int) 16, " "rate = (int) [ 8000, 192000 ]"); capa = -1; } switch (channels) { case AO_CAP_MODE_MONO | AO_CAP_MODE_STEREO: gst_caps_set_simple (caps, "channels", GST_TYPE_INT_RANGE, 1, 2, NULL); break; case AO_CAP_MODE_MONO: gst_caps_set_simple (caps, "channels", G_TYPE_INT, 1, NULL); break; case AO_CAP_MODE_STEREO: gst_caps_set_simple (caps, "channels", G_TYPE_INT, 2, NULL); break; default: g_assert_not_reached (); break; } gst_caps_append (ret, caps); } while (capa != -1); return ret; } static GstPadLinkReturn _xine_audio_sink_link (GstPad * pad, const GstCaps * caps) { GstStructure *structure = gst_caps_get_structure (caps, 0); GstXineAudioSink *xine = GST_XINE_AUDIO_SINK (gst_object_get_parent (GST_OBJECT (pad))); guint channels, temp, rate, width; int mode; if (!gst_structure_get_int (structure, "channels", &channels)) return GST_PAD_LINK_REFUSED; mode = (channels == 1) ? AO_CAP_MODE_MONO : AO_CAP_MODE_STEREO; if (!gst_structure_get_int (structure, "rate", &rate)) return GST_PAD_LINK_REFUSED; if (!gst_structure_get_int (structure, "width", &width)) return GST_PAD_LINK_REFUSED; if (xine->open != 0) xine->driver->close (xine->driver); xine->open = 0; temp = xine->driver->open (xine->driver, width, rate, mode); if (temp == 0) return GST_PAD_LINK_REFUSED; xine->open = channels * width / 8; if (temp != rate) { /* FIXME? */ GST_WARNING_OBJECT (xine, "rates don't match (requested: %u, got %u)", rate, temp); } return GST_PAD_LINK_OK; } /** GstXineAudioSink subclasses ************************************************/ static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink", GST_PAD_SINK, GST_PAD_ALWAYS, GST_STATIC_CAPS ("audio/x-raw-int, " "signed = (boolean) FALSE, " "width = (int) 8, " "depth = (int) 8, " "rate = (int) [ 8000, 192000 ], " "channels = (int) [1, 2]; " "audio/x-raw-int, " "endianness = (int) BYTE_ORDER, " "signed = (boolean) TRUE, " "width = (int) 16, " "depth = (int) 16, " "rate = (int) [ 8000, 192000 ], " "channels = (int) [1, 2]") ); static void gst_xine_audio_sink_subclass_init (gpointer g_class, gpointer class_data) { GstXineAudioSinkClass *xine_class = GST_XINE_AUDIO_SINK_CLASS (g_class); GstElementClass *element_class = GST_ELEMENT_CLASS (g_class); GstElementDetails details = GST_ELEMENT_DETAILS (NULL, "Source", NULL, "Benjamin Otte "); xine_class->plugin_node = class_data; details.longname = g_strdup_printf ("%s xine audio sink", xine_class->plugin_node->info->id); details.description = g_strdup_printf ("%s audio output using Xine", xine_class->plugin_node->info->id); gst_element_class_set_details (element_class, &details); g_free (details.longname); g_free (details.description); gst_element_class_add_pad_template (element_class, gst_static_pad_template_get (&sink_template)); } static void gst_xine_audio_sink_sub_init (GTypeInstance * instance, gpointer g_class) { GstElementClass *klass = GST_ELEMENT_GET_CLASS (instance); GstXineAudioSink *xine = GST_XINE_AUDIO_SINK (instance); xine->sinkpad = gst_pad_new_from_template (gst_element_class_get_pad_template (klass, "sink"), "sink"); gst_pad_set_chain_function (xine->sinkpad, gst_xine_audio_sink_chain); gst_pad_set_getcaps_function (xine->sinkpad, _xine_audio_sink_get_caps); gst_pad_set_link_function (xine->sinkpad, _xine_audio_sink_link); gst_element_add_pad (GST_ELEMENT (xine), xine->sinkpad); } gboolean gst_xine_audio_sink_init_plugin (GstPlugin * plugin) { GTypeInfo plugin_info = { sizeof (GstXineAudioSinkClass), NULL, NULL, gst_xine_audio_sink_subclass_init, NULL, NULL, sizeof (GstXineAudioSink), 0, gst_xine_audio_sink_sub_init, }; plugin_node_t *node; GstXineClass *klass; klass = g_type_class_ref (GST_TYPE_XINE); node = xine_list_first_content (klass->xine->plugin_catalog->aout); while (node) { gchar *plugin_name = g_strdup_printf ("xineaudiosink_%s", node->info->id); gchar *type_name = g_strdup_printf ("GstXineAudioSink%s", node->info->id); GType type; plugin_info.class_data = node; type = g_type_register_static (GST_TYPE_XINE_AUDIO_SINK, type_name, &plugin_info, 0); g_free (type_name); if (!gst_element_register (plugin, plugin_name, GST_RANK_MARGINAL, type)) { g_free (plugin_name); return FALSE; } g_free (plugin_name); node = xine_list_next_content (klass->xine->plugin_catalog->aout); } g_type_class_unref (klass); return TRUE; }