mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-23 16:50:47 +00:00
autodetect: use a common baseclass
This makes the actual elements super simple. We're using the ELEMENT_FLAG to configure source/sink and a string for the Audio/Video type.
This commit is contained in:
parent
62f5a27416
commit
bf6a2f9afd
10 changed files with 506 additions and 1326 deletions
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@ -39,35 +39,25 @@
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#include "config.h"
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#endif
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#include <string.h>
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#include "gstautoaudiosink.h"
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#include "gstautodetect.h"
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#define DEFAULT_TS_OFFSET 0
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#define DEFAULT_SYNC TRUE
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/* Properties */
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enum
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{
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PROP_0,
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PROP_CAPS,
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PROP_TS_OFFSET,
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PROP_SYNC,
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};
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static GstStateChangeReturn
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gst_auto_audio_sink_change_state (GstElement * element,
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GstStateChange transition);
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static void gst_auto_audio_sink_dispose (GstAutoAudioSink * sink);
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static void gst_auto_audio_sink_clear_kid (GstAutoAudioSink * sink);
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static void gst_auto_audio_sink_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_auto_audio_sink_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static void gst_auto_audio_sink_configure (GstAutoDetect * autodetect,
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GstElement * kid);
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#define gst_auto_audio_sink_parent_class parent_class
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G_DEFINE_TYPE (GstAutoAudioSink, gst_auto_audio_sink, GST_TYPE_BIN);
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G_DEFINE_TYPE (GstAutoAudioSink, gst_auto_audio_sink, GST_TYPE_AUTO_DETECT);
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static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK,
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@ -77,318 +67,45 @@ static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
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static void
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gst_auto_audio_sink_class_init (GstAutoAudioSinkClass * klass)
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{
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GObjectClass *gobject_class;
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GstElementClass *eklass;
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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GstElementClass *eklass = GST_ELEMENT_CLASS (klass);
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GstAutoDetectClass *aklass = GST_AUTO_DETECT_CLASS (klass);
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gobject_class = G_OBJECT_CLASS (klass);
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eklass = GST_ELEMENT_CLASS (klass);
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gobject_class->dispose = (GObjectFinalizeFunc) gst_auto_audio_sink_dispose;
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gobject_class->set_property = gst_auto_audio_sink_set_property;
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gobject_class->get_property = gst_auto_audio_sink_get_property;
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eklass->change_state = GST_DEBUG_FUNCPTR (gst_auto_audio_sink_change_state);
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/**
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* GstAutoAudioSink:filter-caps:
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*
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* This property will filter out candidate sinks that can handle the specified
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* caps. By default only audio sinks that support raw floating point and
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* integer audio are selected.
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*
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* This property can only be set before the element goes to the READY state.
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*/
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g_object_class_install_property (gobject_class, PROP_CAPS,
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g_param_spec_boxed ("filter-caps", "Filter caps",
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"Filter sink candidates using these caps.", GST_TYPE_CAPS,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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aklass->configure = gst_auto_audio_sink_configure;
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g_object_class_install_property (gobject_class, PROP_TS_OFFSET,
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g_param_spec_int64 ("ts-offset", "TS Offset",
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"Timestamp offset in nanoseconds", G_MININT64, G_MAXINT64,
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DEFAULT_TS_OFFSET, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_SYNC,
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g_param_spec_boolean ("sync", "Sync",
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"Sync on the clock", DEFAULT_SYNC,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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gst_element_class_add_pad_template (eklass,
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gst_static_pad_template_get (&sink_template));
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gst_element_class_set_static_metadata (eklass, "Auto audio sink",
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"Sink/Audio",
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"Wrapper audio sink for automatically detected audio sink",
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"Jan Schmidt <thaytan@noraisin.net>");
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}
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static void
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gst_auto_audio_sink_dispose (GstAutoAudioSink * sink)
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{
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gst_auto_audio_sink_clear_kid (sink);
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if (sink->filter_caps)
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gst_caps_unref (sink->filter_caps);
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sink->filter_caps = NULL;
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G_OBJECT_CLASS (parent_class)->dispose ((GObject *) sink);
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}
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static void
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gst_auto_audio_sink_clear_kid (GstAutoAudioSink * sink)
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{
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if (sink->kid) {
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gst_element_set_state (sink->kid, GST_STATE_NULL);
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gst_bin_remove (GST_BIN (sink), sink->kid);
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sink->kid = NULL;
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/* Don't lose the SINK flag */
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GST_OBJECT_FLAG_SET (sink, GST_ELEMENT_FLAG_SINK);
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}
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}
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/*
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* Hack to make initial linking work; ideally, this'd work even when
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* no target has been assigned to the ghostpad yet.
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*/
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static void
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gst_auto_audio_sink_reset (GstAutoAudioSink * sink)
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{
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GstPad *targetpad;
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gst_auto_audio_sink_clear_kid (sink);
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/* fakesink placeholder */
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sink->kid = gst_element_factory_make ("fakesink", "tempsink");
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gst_bin_add (GST_BIN (sink), sink->kid);
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/* pad */
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targetpad = gst_element_get_static_pad (sink->kid, "sink");
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gst_ghost_pad_set_target (GST_GHOST_PAD (sink->pad), targetpad);
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gst_object_unref (targetpad);
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}
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static GstStaticCaps raw_caps = GST_STATIC_CAPS ("audio/x-raw");
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static void
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gst_auto_audio_sink_init (GstAutoAudioSink * sink)
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{
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sink->pad = gst_ghost_pad_new_no_target ("sink", GST_PAD_SINK);
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gst_element_add_pad (GST_ELEMENT (sink), sink->pad);
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GstAutoDetect *autodetect = GST_AUTO_DETECT (sink);
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gst_auto_audio_sink_reset (sink);
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autodetect->media_klass = "Audio";
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autodetect->flag = GST_ELEMENT_FLAG_SINK;
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/* set the default raw audio caps */
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sink->filter_caps = gst_static_caps_get (&raw_caps);
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sink->ts_offset = DEFAULT_TS_OFFSET;
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sink->sync = DEFAULT_SYNC;
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/* mark as sink */
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GST_OBJECT_FLAG_SET (sink, GST_ELEMENT_FLAG_SINK);
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}
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static gboolean
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gst_auto_audio_sink_factory_filter (GstPluginFeature * feature, gpointer data)
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static void
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gst_auto_audio_sink_configure (GstAutoDetect * autodetect, GstElement * kid)
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{
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guint rank;
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const gchar *klass;
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GstAutoAudioSink *self = GST_AUTO_AUDIO_SINK (autodetect);
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/* we only care about element factories */
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if (!GST_IS_ELEMENT_FACTORY (feature))
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return FALSE;
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/* audio sinks */
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klass = gst_element_factory_get_metadata (GST_ELEMENT_FACTORY (feature),
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GST_ELEMENT_METADATA_KLASS);
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if (!(strstr (klass, "Sink") && strstr (klass, "Audio")))
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return FALSE;
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/* only select elements with autoplugging rank */
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rank = gst_plugin_feature_get_rank (feature);
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if (rank < GST_RANK_MARGINAL)
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return FALSE;
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return TRUE;
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}
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static GstElement *
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gst_auto_audio_sink_find_best (GstAutoAudioSink * sink)
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{
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GList *list, *item;
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GstElement *choice = NULL;
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GstMessage *message = NULL;
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GSList *errors = NULL;
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GstBus *bus = gst_bus_new ();
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GstPad *el_pad = NULL;
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GstCaps *el_caps = NULL;
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gboolean no_match = TRUE;
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list = gst_registry_feature_filter (gst_registry_get (),
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(GstPluginFeatureFilter) gst_auto_audio_sink_factory_filter, FALSE, sink);
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list =
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g_list_sort (list, (GCompareFunc) gst_plugin_feature_rank_compare_func);
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/* We don't treat sound server sinks special. Our policy is that sound
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* server sinks that have a rank must not auto-spawn a daemon under any
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* circumstances, so there's nothing for us to worry about here */
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GST_LOG_OBJECT (sink, "Trying to find usable audio devices ...");
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for (item = list; item != NULL; item = item->next) {
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GstElementFactory *f = GST_ELEMENT_FACTORY (item->data);
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GstElement *el;
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if ((el = gst_auto_create_element_with_pretty_name (GST_ELEMENT_CAST (sink),
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f, "sink"))) {
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GstStateChangeReturn ret;
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GST_DEBUG_OBJECT (sink, "Testing %s", GST_OBJECT_NAME (f));
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/* If autoaudiosink has been provided with filter caps,
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* accept only sinks that match with the filter caps */
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if (sink->filter_caps) {
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el_pad = gst_element_get_static_pad (GST_ELEMENT (el), "sink");
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el_caps = gst_pad_query_caps (el_pad, NULL);
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gst_object_unref (el_pad);
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GST_DEBUG_OBJECT (sink,
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"Checking caps: %" GST_PTR_FORMAT " vs. %" GST_PTR_FORMAT,
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sink->filter_caps, el_caps);
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no_match = !gst_caps_can_intersect (sink->filter_caps, el_caps);
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gst_caps_unref (el_caps);
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if (no_match) {
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GST_DEBUG_OBJECT (sink, "Incompatible caps");
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gst_object_unref (el);
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continue;
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} else {
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GST_DEBUG_OBJECT (sink, "Found compatible caps");
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}
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}
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gst_element_set_bus (el, bus);
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ret = gst_element_set_state (el, GST_STATE_READY);
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if (ret == GST_STATE_CHANGE_SUCCESS) {
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GST_DEBUG_OBJECT (sink, "This worked!");
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choice = el;
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break;
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}
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/* collect all error messages */
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while ((message = gst_bus_pop_filtered (bus, GST_MESSAGE_ERROR))) {
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GST_DEBUG_OBJECT (sink, "error message %" GST_PTR_FORMAT, message);
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errors = g_slist_append (errors, message);
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}
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gst_element_set_state (el, GST_STATE_NULL);
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gst_object_unref (el);
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}
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}
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GST_DEBUG_OBJECT (sink, "done trying");
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if (!choice) {
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if (errors) {
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/* FIXME: we forward the first error for now; but later on it might make
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* sense to actually analyse them */
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gst_message_ref (GST_MESSAGE (errors->data));
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GST_DEBUG_OBJECT (sink, "reposting message %p", errors->data);
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gst_element_post_message (GST_ELEMENT (sink), GST_MESSAGE (errors->data));
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} else {
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/* send warning message to application and use a fakesink */
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GST_ELEMENT_WARNING (sink, RESOURCE, NOT_FOUND, (NULL),
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("Failed to find a usable audio sink"));
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choice = gst_element_factory_make ("fakesink", "fake-audio-sink");
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if (g_object_class_find_property (G_OBJECT_GET_CLASS (choice), "sync"))
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g_object_set (choice, "sync", TRUE, NULL);
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gst_element_set_state (choice, GST_STATE_READY);
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}
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}
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gst_object_unref (bus);
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gst_plugin_feature_list_free (list);
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g_slist_foreach (errors, (GFunc) gst_mini_object_unref, NULL);
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g_slist_free (errors);
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return choice;
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}
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static gboolean
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gst_auto_audio_sink_detect (GstAutoAudioSink * sink)
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{
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GstElement *esink;
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GstPad *targetpad;
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gst_auto_audio_sink_clear_kid (sink);
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/* find element */
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GST_DEBUG_OBJECT (sink, "Creating new kid");
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if (!(esink = gst_auto_audio_sink_find_best (sink)))
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goto no_sink;
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g_object_set (G_OBJECT (esink), "ts-offset", sink->ts_offset, NULL);
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g_object_set (G_OBJECT (esink), "sync", sink->sync, NULL);
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sink->kid = esink;
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/* Ensure the child is brought up to the right state to match the parent
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* although it's currently always in READY and
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* we're always doing NULL->READY. */
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if (GST_STATE (sink->kid) < GST_STATE (sink))
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gst_element_set_state (sink->kid, GST_STATE (sink));
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gst_bin_add (GST_BIN (sink), esink);
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/* attach ghost pad */
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GST_DEBUG_OBJECT (sink, "Re-assigning ghostpad");
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targetpad = gst_element_get_static_pad (sink->kid, "sink");
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if (!gst_ghost_pad_set_target (GST_GHOST_PAD (sink->pad), targetpad))
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goto target_failed;
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gst_object_unref (targetpad);
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GST_DEBUG_OBJECT (sink, "done changing auto audio sink");
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return TRUE;
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/* ERRORS */
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no_sink:
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{
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GST_ELEMENT_ERROR (sink, LIBRARY, INIT, (NULL),
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("Failed to find a supported audio sink"));
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return FALSE;
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}
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target_failed:
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{
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GST_ELEMENT_ERROR (sink, LIBRARY, INIT, (NULL),
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("Failed to set target pad"));
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gst_object_unref (targetpad);
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return FALSE;
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}
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}
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static GstStateChangeReturn
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gst_auto_audio_sink_change_state (GstElement * element,
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GstStateChange transition)
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{
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GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
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GstAutoAudioSink *sink = GST_AUTO_AUDIO_SINK (element);
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switch (transition) {
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case GST_STATE_CHANGE_NULL_TO_READY:
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if (!gst_auto_audio_sink_detect (sink))
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return GST_STATE_CHANGE_FAILURE;
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break;
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default:
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break;
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}
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ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
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if (ret == GST_STATE_CHANGE_FAILURE)
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return ret;
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switch (transition) {
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case GST_STATE_CHANGE_READY_TO_NULL:
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gst_auto_audio_sink_reset (sink);
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break;
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default:
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break;
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}
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return ret;
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g_object_set (G_OBJECT (kid), "ts-offset", self->ts_offset, NULL);
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}
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static void
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@ -396,22 +113,13 @@ gst_auto_audio_sink_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstAutoAudioSink *sink = GST_AUTO_AUDIO_SINK (object);
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GstAutoDetect *autodetect = (GstAutoDetect *) sink;
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switch (prop_id) {
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case PROP_CAPS:
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if (sink->filter_caps)
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gst_caps_unref (sink->filter_caps);
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sink->filter_caps = gst_caps_copy (gst_value_get_caps (value));
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break;
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case PROP_TS_OFFSET:
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sink->ts_offset = g_value_get_int64 (value);
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if (sink->kid)
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g_object_set_property (G_OBJECT (sink->kid), pspec->name, value);
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break;
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case PROP_SYNC:
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sink->sync = g_value_get_boolean (value);
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if (sink->kid)
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g_object_set_property (G_OBJECT (sink->kid), pspec->name, value);
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if (autodetect->kid)
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g_object_set_property (G_OBJECT (autodetect->kid), pspec->name, value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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@ -426,16 +134,9 @@ gst_auto_audio_sink_get_property (GObject * object, guint prop_id,
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GstAutoAudioSink *sink = GST_AUTO_AUDIO_SINK (object);
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switch (prop_id) {
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case PROP_CAPS:{
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gst_value_set_caps (value, sink->filter_caps);
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break;
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}
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case PROP_TS_OFFSET:
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g_value_set_int64 (value, sink->ts_offset);
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break;
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case PROP_SYNC:
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g_value_set_boolean (value, sink->sync);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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@ -21,6 +21,7 @@
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#define __GST_AUTO_AUDIO_SINK_H__
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#include <gst/gst.h>
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#include "gstautodetect.h"
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G_BEGIN_DECLS
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@ -38,18 +39,13 @@ G_BEGIN_DECLS
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(G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_AUTO_AUDIO_SINK))
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typedef struct _GstAutoAudioSink {
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GstBin parent;
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GstAutoDetect parent;
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/* explicit pointers to stuff used */
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GstPad *pad;
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GstElement *kid;
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GstCaps *filter_caps;
|
||||
GstClockTimeDiff ts_offset;
|
||||
gboolean sync;
|
||||
} GstAutoAudioSink;
|
||||
|
||||
typedef struct _GstAutoAudioSinkClass {
|
||||
GstBinClass parent_class;
|
||||
GstAutoDetectClass parent_class;
|
||||
} GstAutoAudioSinkClass;
|
||||
|
||||
GType gst_auto_audio_sink_get_type (void);
|
||||
|
|
|
@ -40,30 +40,9 @@
|
|||
#include "config.h"
|
||||
#endif
|
||||
|
||||
#include <string.h>
|
||||
|
||||
#include "gstautoaudiosrc.h"
|
||||
#include "gstautodetect.h"
|
||||
|
||||
/* Properties */
|
||||
enum
|
||||
{
|
||||
PROP_0,
|
||||
PROP_CAPS,
|
||||
};
|
||||
|
||||
static GstStateChangeReturn
|
||||
gst_auto_audio_src_change_state (GstElement * element,
|
||||
GstStateChange transition);
|
||||
static void gst_auto_audio_src_dispose (GstAutoAudioSrc * src);
|
||||
static void gst_auto_audio_src_clear_kid (GstAutoAudioSrc * src);
|
||||
static void gst_auto_audio_src_set_property (GObject * object, guint prop_id,
|
||||
const GValue * value, GParamSpec * pspec);
|
||||
static void gst_auto_audio_src_get_property (GObject * object, guint prop_id,
|
||||
GValue * value, GParamSpec * pspec);
|
||||
|
||||
#define gst_auto_audio_src_parent_class parent_class
|
||||
G_DEFINE_TYPE (GstAutoAudioSrc, gst_auto_audio_src, GST_TYPE_BIN);
|
||||
G_DEFINE_TYPE (GstAutoAudioSrc, gst_auto_audio_src, GST_TYPE_AUTO_DETECT);
|
||||
|
||||
static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
|
||||
GST_PAD_SRC,
|
||||
|
@ -73,35 +52,10 @@ static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
|
|||
static void
|
||||
gst_auto_audio_src_class_init (GstAutoAudioSrcClass * klass)
|
||||
{
|
||||
GObjectClass *gobject_class;
|
||||
GstElementClass *eklass;
|
||||
|
||||
gobject_class = G_OBJECT_CLASS (klass);
|
||||
eklass = GST_ELEMENT_CLASS (klass);
|
||||
|
||||
gobject_class->dispose = (GObjectFinalizeFunc) gst_auto_audio_src_dispose;
|
||||
gobject_class->set_property = gst_auto_audio_src_set_property;
|
||||
gobject_class->get_property = gst_auto_audio_src_get_property;
|
||||
|
||||
eklass->change_state = GST_DEBUG_FUNCPTR (gst_auto_audio_src_change_state);
|
||||
|
||||
/**
|
||||
* GstAutoAudioSrc:filter-caps:
|
||||
*
|
||||
* This property will filter out candidate sinks that can handle the specified
|
||||
* caps. By default only audio sinks that support raw floating point and
|
||||
* integer audio are selected.
|
||||
*
|
||||
* This property can only be set before the element goes to the READY state.
|
||||
*/
|
||||
g_object_class_install_property (gobject_class, PROP_CAPS,
|
||||
g_param_spec_boxed ("filter-caps", "Filter caps",
|
||||
"Filter sink candidates using these caps.", GST_TYPE_CAPS,
|
||||
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
||||
GstElementClass *eklass = GST_ELEMENT_CLASS (klass);
|
||||
|
||||
gst_element_class_add_pad_template (eklass,
|
||||
gst_static_pad_template_get (&src_template));
|
||||
|
||||
gst_element_class_set_static_metadata (eklass, "Auto audio source",
|
||||
"Source/Audio",
|
||||
"Wrapper audio source for automatically detected audio source",
|
||||
|
@ -109,302 +63,11 @@ gst_auto_audio_src_class_init (GstAutoAudioSrcClass * klass)
|
|||
"Stefan Kost <ensonic@users.sf.net>");
|
||||
}
|
||||
|
||||
static void
|
||||
gst_auto_audio_src_dispose (GstAutoAudioSrc * src)
|
||||
{
|
||||
gst_auto_audio_src_clear_kid (src);
|
||||
|
||||
if (src->filter_caps)
|
||||
gst_caps_unref (src->filter_caps);
|
||||
src->filter_caps = NULL;
|
||||
|
||||
G_OBJECT_CLASS (parent_class)->dispose ((GObject *) src);
|
||||
}
|
||||
|
||||
static void
|
||||
gst_auto_audio_src_clear_kid (GstAutoAudioSrc * src)
|
||||
{
|
||||
if (src->kid) {
|
||||
gst_element_set_state (src->kid, GST_STATE_NULL);
|
||||
gst_bin_remove (GST_BIN (src), src->kid);
|
||||
src->kid = NULL;
|
||||
|
||||
/* Don't lose SOURCE flag */
|
||||
GST_OBJECT_FLAG_SET (src, GST_ELEMENT_FLAG_SOURCE);
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* Hack to make initial linking work; ideally, this'd work even when
|
||||
* no target has been assigned to the ghostpad yet.
|
||||
*/
|
||||
static void
|
||||
gst_auto_audio_src_reset (GstAutoAudioSrc * src)
|
||||
{
|
||||
GstPad *targetpad;
|
||||
|
||||
gst_auto_audio_src_clear_kid (src);
|
||||
|
||||
/* fakesink placeholder */
|
||||
src->kid = gst_element_factory_make ("fakesrc", "tempsrc");
|
||||
gst_bin_add (GST_BIN (src), src->kid);
|
||||
|
||||
/* pad */
|
||||
targetpad = gst_element_get_static_pad (src->kid, "src");
|
||||
gst_ghost_pad_set_target (GST_GHOST_PAD (src->pad), targetpad);
|
||||
gst_object_unref (targetpad);
|
||||
}
|
||||
|
||||
static GstStaticCaps raw_caps = GST_STATIC_CAPS ("audio/x-raw");
|
||||
|
||||
static void
|
||||
gst_auto_audio_src_init (GstAutoAudioSrc * src)
|
||||
{
|
||||
src->pad = gst_ghost_pad_new_no_target ("src", GST_PAD_SRC);
|
||||
gst_element_add_pad (GST_ELEMENT (src), src->pad);
|
||||
GstAutoDetect *autodetect = GST_AUTO_DETECT (src);
|
||||
|
||||
gst_auto_audio_src_reset (src);
|
||||
|
||||
/* set the default raw audio caps */
|
||||
src->filter_caps = gst_static_caps_get (&raw_caps);
|
||||
|
||||
/* mark as source */
|
||||
GST_OBJECT_FLAG_SET (src, GST_ELEMENT_FLAG_SOURCE);
|
||||
}
|
||||
|
||||
static gboolean
|
||||
gst_auto_audio_src_factory_filter (GstPluginFeature * feature, gpointer data)
|
||||
{
|
||||
guint rank;
|
||||
const gchar *klass;
|
||||
|
||||
/* we only care about element factories */
|
||||
if (!GST_IS_ELEMENT_FACTORY (feature))
|
||||
return FALSE;
|
||||
|
||||
/* audio sinks */
|
||||
klass = gst_element_factory_get_metadata (GST_ELEMENT_FACTORY (feature),
|
||||
GST_ELEMENT_METADATA_KLASS);
|
||||
if (!(strstr (klass, "Source") && strstr (klass, "Audio")))
|
||||
return FALSE;
|
||||
|
||||
/* only select elements with autoplugging rank */
|
||||
rank = gst_plugin_feature_get_rank (feature);
|
||||
if (rank < GST_RANK_MARGINAL)
|
||||
return FALSE;
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
static GstElement *
|
||||
gst_auto_audio_src_find_best (GstAutoAudioSrc * src)
|
||||
{
|
||||
GList *list, *item;
|
||||
GstElement *choice = NULL;
|
||||
GstMessage *message = NULL;
|
||||
GSList *errors = NULL;
|
||||
GstBus *bus = gst_bus_new ();
|
||||
GstPad *el_pad = NULL;
|
||||
GstCaps *el_caps = NULL;
|
||||
gboolean no_match = TRUE;
|
||||
|
||||
list = gst_registry_feature_filter (gst_registry_get (),
|
||||
(GstPluginFeatureFilter) gst_auto_audio_src_factory_filter, FALSE, src);
|
||||
list =
|
||||
g_list_sort (list, (GCompareFunc) gst_plugin_feature_rank_compare_func);
|
||||
|
||||
/* We don't treat sound server sources special. Our policy is that sound
|
||||
* server sources that have a rank must not auto-spawn a daemon under any
|
||||
* circumstances, so there's nothing for us to worry about here */
|
||||
GST_LOG_OBJECT (src, "Trying to find usable audio devices ...");
|
||||
|
||||
for (item = list; item != NULL; item = item->next) {
|
||||
GstElementFactory *f = GST_ELEMENT_FACTORY (item->data);
|
||||
GstElement *el;
|
||||
|
||||
if ((el = gst_auto_create_element_with_pretty_name (GST_ELEMENT_CAST (src),
|
||||
f, "src"))) {
|
||||
GstStateChangeReturn ret;
|
||||
|
||||
GST_DEBUG_OBJECT (src, "Testing %s", GST_OBJECT_NAME (f));
|
||||
|
||||
/* If autoAudioSrc has been provided with filter caps,
|
||||
* accept only sources that match with the filter caps */
|
||||
if (src->filter_caps) {
|
||||
el_pad = gst_element_get_static_pad (GST_ELEMENT (el), "src");
|
||||
el_caps = gst_pad_query_caps (el_pad, NULL);
|
||||
gst_object_unref (el_pad);
|
||||
GST_DEBUG_OBJECT (src,
|
||||
"Checking caps: %" GST_PTR_FORMAT " vs. %" GST_PTR_FORMAT,
|
||||
src->filter_caps, el_caps);
|
||||
no_match = !gst_caps_can_intersect (src->filter_caps, el_caps);
|
||||
gst_caps_unref (el_caps);
|
||||
|
||||
if (no_match) {
|
||||
GST_DEBUG_OBJECT (src, "Incompatible caps");
|
||||
gst_object_unref (el);
|
||||
continue;
|
||||
} else {
|
||||
GST_DEBUG_OBJECT (src, "Found compatible caps");
|
||||
}
|
||||
}
|
||||
|
||||
gst_element_set_bus (el, bus);
|
||||
ret = gst_element_set_state (el, GST_STATE_READY);
|
||||
if (ret == GST_STATE_CHANGE_SUCCESS) {
|
||||
GST_DEBUG_OBJECT (src, "This worked!");
|
||||
choice = el;
|
||||
break;
|
||||
}
|
||||
|
||||
/* collect all error messages */
|
||||
while ((message = gst_bus_pop_filtered (bus, GST_MESSAGE_ERROR))) {
|
||||
GST_DEBUG_OBJECT (src, "error message %" GST_PTR_FORMAT, message);
|
||||
errors = g_slist_append (errors, message);
|
||||
}
|
||||
|
||||
gst_element_set_state (el, GST_STATE_NULL);
|
||||
gst_object_unref (el);
|
||||
}
|
||||
}
|
||||
|
||||
GST_DEBUG_OBJECT (src, "done trying");
|
||||
if (!choice) {
|
||||
if (errors) {
|
||||
/* FIXME: we forward the first error for now; but later on it might make
|
||||
* sense to actually analyse them */
|
||||
gst_message_ref (GST_MESSAGE (errors->data));
|
||||
GST_DEBUG_OBJECT (src, "reposting message %p", errors->data);
|
||||
gst_element_post_message (GST_ELEMENT (src), GST_MESSAGE (errors->data));
|
||||
} else {
|
||||
/* send warning message to application and use a fakesrc */
|
||||
GST_ELEMENT_WARNING (src, RESOURCE, NOT_FOUND, (NULL),
|
||||
("Failed to find a usable audio source"));
|
||||
choice = gst_element_factory_make ("fakesrc", "fake-audio-src");
|
||||
if (g_object_class_find_property (G_OBJECT_GET_CLASS (choice), "sync"))
|
||||
g_object_set (choice, "sync", TRUE, NULL);
|
||||
gst_element_set_state (choice, GST_STATE_READY);
|
||||
}
|
||||
}
|
||||
gst_object_unref (bus);
|
||||
gst_plugin_feature_list_free (list);
|
||||
g_slist_foreach (errors, (GFunc) gst_mini_object_unref, NULL);
|
||||
g_slist_free (errors);
|
||||
|
||||
return choice;
|
||||
}
|
||||
|
||||
static gboolean
|
||||
gst_auto_audio_src_detect (GstAutoAudioSrc * src)
|
||||
{
|
||||
GstElement *esrc;
|
||||
GstPad *targetpad;
|
||||
|
||||
gst_auto_audio_src_clear_kid (src);
|
||||
|
||||
/* find element */
|
||||
GST_DEBUG_OBJECT (src, "Creating new kid");
|
||||
if (!(esrc = gst_auto_audio_src_find_best (src)))
|
||||
goto no_src;
|
||||
|
||||
src->kid = esrc;
|
||||
/* Ensure the child is brought up to the right state to match the parent
|
||||
* although it's currently always in READY and
|
||||
* we're always doing NULL->READY. */
|
||||
if (GST_STATE (src->kid) < GST_STATE (src))
|
||||
gst_element_set_state (src->kid, GST_STATE (src));
|
||||
|
||||
gst_bin_add (GST_BIN (src), esrc);
|
||||
|
||||
/* attach ghost pad */
|
||||
GST_DEBUG_OBJECT (src, "Re-assigning ghostpad");
|
||||
targetpad = gst_element_get_static_pad (src->kid, "src");
|
||||
if (!gst_ghost_pad_set_target (GST_GHOST_PAD (src->pad), targetpad))
|
||||
goto target_failed;
|
||||
|
||||
gst_object_unref (targetpad);
|
||||
GST_DEBUG_OBJECT (src, "done changing auto audio source");
|
||||
|
||||
return TRUE;
|
||||
|
||||
/* ERRORS */
|
||||
no_src:
|
||||
{
|
||||
GST_ELEMENT_ERROR (src, LIBRARY, INIT, (NULL),
|
||||
("Failed to find a supported audio source"));
|
||||
return FALSE;
|
||||
}
|
||||
target_failed:
|
||||
{
|
||||
GST_ELEMENT_ERROR (src, LIBRARY, INIT, (NULL),
|
||||
("Failed to set target pad"));
|
||||
gst_object_unref (targetpad);
|
||||
return FALSE;
|
||||
}
|
||||
}
|
||||
|
||||
static GstStateChangeReturn
|
||||
gst_auto_audio_src_change_state (GstElement * element,
|
||||
GstStateChange transition)
|
||||
{
|
||||
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
|
||||
GstAutoAudioSrc *src = GST_AUTO_AUDIO_SRC (element);
|
||||
|
||||
switch (transition) {
|
||||
case GST_STATE_CHANGE_NULL_TO_READY:
|
||||
if (!gst_auto_audio_src_detect (src))
|
||||
return GST_STATE_CHANGE_FAILURE;
|
||||
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_auto_audio_src_reset (src);
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void
|
||||
gst_auto_audio_src_set_property (GObject * object, guint prop_id,
|
||||
const GValue * value, GParamSpec * pspec)
|
||||
{
|
||||
GstAutoAudioSrc *src = GST_AUTO_AUDIO_SRC (object);
|
||||
|
||||
switch (prop_id) {
|
||||
case PROP_CAPS:
|
||||
if (src->filter_caps)
|
||||
gst_caps_unref (src->filter_caps);
|
||||
src->filter_caps = gst_caps_copy (gst_value_get_caps (value));
|
||||
break;
|
||||
default:
|
||||
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
gst_auto_audio_src_get_property (GObject * object, guint prop_id,
|
||||
GValue * value, GParamSpec * pspec)
|
||||
{
|
||||
GstAutoAudioSrc *src = GST_AUTO_AUDIO_SRC (object);
|
||||
|
||||
switch (prop_id) {
|
||||
case PROP_CAPS:{
|
||||
gst_value_set_caps (value, src->filter_caps);
|
||||
break;
|
||||
}
|
||||
default:
|
||||
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
||||
break;
|
||||
}
|
||||
autodetect->media_klass = "Audio";
|
||||
autodetect->flag = GST_ELEMENT_FLAG_SOURCE;
|
||||
}
|
||||
|
|
|
@ -22,6 +22,7 @@
|
|||
#define __GST_AUTO_AUDIO_SRC_H__
|
||||
|
||||
#include <gst/gst.h>
|
||||
#include "gstautodetect.h"
|
||||
|
||||
G_BEGIN_DECLS
|
||||
|
||||
|
@ -39,16 +40,11 @@ G_BEGIN_DECLS
|
|||
(G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_AUTO_AUDIO_SRC))
|
||||
|
||||
typedef struct _GstAutoAudioSrc {
|
||||
GstBin parent;
|
||||
|
||||
/* explicit pointers to stuff used */
|
||||
GstPad *pad;
|
||||
GstElement *kid;
|
||||
GstCaps *filter_caps;
|
||||
GstAutoDetect parent;
|
||||
} GstAutoAudioSrc;
|
||||
|
||||
typedef struct _GstAutoAudioSrcClass {
|
||||
GstBinClass parent_class;
|
||||
GstAutoDetectClass parent_class;
|
||||
} GstAutoAudioSrcClass;
|
||||
|
||||
GType gst_auto_audio_src_get_type (void);
|
||||
|
|
|
@ -21,6 +21,7 @@
|
|||
#include "config.h"
|
||||
#endif
|
||||
|
||||
#include <stdio.h>
|
||||
#include <string.h>
|
||||
|
||||
#include <gst/gst.h>
|
||||
|
@ -33,20 +34,203 @@
|
|||
|
||||
GST_DEBUG_CATEGORY (autodetect_debug);
|
||||
|
||||
GstElement *
|
||||
gst_auto_create_element_with_pretty_name (GstElement * autodetect,
|
||||
GstElementFactory * factory, const gchar * suffix)
|
||||
#define DEFAULT_SYNC TRUE
|
||||
|
||||
/* Properties */
|
||||
enum
|
||||
{
|
||||
PROP_0,
|
||||
PROP_CAPS,
|
||||
PROP_SYNC,
|
||||
};
|
||||
|
||||
static GstStateChangeReturn gst_auto_detect_change_state (GstElement * element,
|
||||
GstStateChange transition);
|
||||
static void gst_auto_detect_constructed (GObject * object);
|
||||
static void gst_auto_detect_dispose (GObject * self);
|
||||
static void gst_auto_detect_clear_kid (GstAutoDetect * self);
|
||||
static void gst_auto_detect_set_property (GObject * object, guint prop_id,
|
||||
const GValue * value, GParamSpec * pspec);
|
||||
static void gst_auto_detect_get_property (GObject * object, guint prop_id,
|
||||
GValue * value, GParamSpec * pspec);
|
||||
|
||||
#define gst_auto_detect_parent_class parent_class
|
||||
G_DEFINE_ABSTRACT_TYPE (GstAutoDetect, gst_auto_detect, GST_TYPE_BIN);
|
||||
|
||||
static void
|
||||
gst_auto_detect_class_init (GstAutoDetectClass * klass)
|
||||
{
|
||||
GObjectClass *gobject_class;
|
||||
GstElementClass *eklass;
|
||||
|
||||
gobject_class = G_OBJECT_CLASS (klass);
|
||||
eklass = GST_ELEMENT_CLASS (klass);
|
||||
|
||||
gobject_class->constructed = gst_auto_detect_constructed;
|
||||
gobject_class->dispose = gst_auto_detect_dispose;
|
||||
gobject_class->set_property = gst_auto_detect_set_property;
|
||||
gobject_class->get_property = gst_auto_detect_get_property;
|
||||
|
||||
eklass->change_state = GST_DEBUG_FUNCPTR (gst_auto_detect_change_state);
|
||||
|
||||
/**
|
||||
* GstAutoDetect:filter-caps:
|
||||
*
|
||||
* This property will filter out candidate sinks that can handle the specified
|
||||
* caps. By default only elements that support uncompressed data are selected.
|
||||
*
|
||||
* This property can only be set before the element goes to the READY state.
|
||||
*/
|
||||
g_object_class_install_property (gobject_class, PROP_CAPS,
|
||||
g_param_spec_boxed ("filter-caps", "Filter caps",
|
||||
"Filter sink candidates using these caps.", GST_TYPE_CAPS,
|
||||
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
||||
|
||||
g_object_class_install_property (gobject_class, PROP_SYNC,
|
||||
g_param_spec_boolean ("sync", "Sync",
|
||||
"Sync on the clock", DEFAULT_SYNC,
|
||||
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
||||
}
|
||||
|
||||
static void
|
||||
gst_auto_detect_dispose (GObject * object)
|
||||
{
|
||||
GstAutoDetect *self = GST_AUTO_DETECT (object);
|
||||
|
||||
gst_auto_detect_clear_kid (self);
|
||||
|
||||
if (self->filter_caps)
|
||||
gst_caps_unref (self->filter_caps);
|
||||
self->filter_caps = NULL;
|
||||
|
||||
G_OBJECT_CLASS (parent_class)->dispose ((GObject *) self);
|
||||
}
|
||||
|
||||
static void
|
||||
gst_auto_detect_clear_kid (GstAutoDetect * self)
|
||||
{
|
||||
if (self->kid) {
|
||||
gst_element_set_state (self->kid, GST_STATE_NULL);
|
||||
gst_bin_remove (GST_BIN (self), self->kid);
|
||||
self->kid = NULL;
|
||||
/* Don't lose the element type flag */
|
||||
GST_OBJECT_FLAG_SET (self, self->flag);
|
||||
}
|
||||
}
|
||||
|
||||
static GstElement *
|
||||
gst_auto_detect_create_fake_element (GstAutoDetect * self)
|
||||
{
|
||||
GstElement *fake;
|
||||
gchar dummy_factory[10], dummy_name[20];
|
||||
|
||||
sprintf (dummy_factory, "fake%s", self->type_klass_lc);
|
||||
sprintf (dummy_name, "fake-%s-%s", self->media_klass_lc, self->type_klass_lc);
|
||||
fake = gst_element_factory_make (dummy_factory, dummy_name);
|
||||
g_object_set (fake, "sync", self->sync, NULL);
|
||||
|
||||
return fake;
|
||||
}
|
||||
|
||||
static gboolean
|
||||
gst_auto_detect_attach_ghost_pad (GstAutoDetect * self)
|
||||
{
|
||||
GstPad *target = gst_element_get_static_pad (self->kid, self->type_klass_lc);
|
||||
gboolean res = gst_ghost_pad_set_target (GST_GHOST_PAD (self->pad), target);
|
||||
gst_object_unref (target);
|
||||
|
||||
return res;
|
||||
}
|
||||
|
||||
/* Hack to make initial linking work; ideally, this'd work even when
|
||||
* no target has been assigned to the ghostpad yet. */
|
||||
static void
|
||||
gst_auto_detect_reset (GstAutoDetect * self)
|
||||
{
|
||||
gst_auto_detect_clear_kid (self);
|
||||
|
||||
/* placeholder element */
|
||||
self->kid = gst_auto_detect_create_fake_element (self);
|
||||
gst_bin_add (GST_BIN (self), self->kid);
|
||||
|
||||
gst_auto_detect_attach_ghost_pad (self);
|
||||
}
|
||||
|
||||
static GstStaticCaps raw_audio_caps = GST_STATIC_CAPS ("audio/x-raw");
|
||||
static GstStaticCaps raw_video_caps = GST_STATIC_CAPS ("video/x-raw");
|
||||
|
||||
static void
|
||||
gst_auto_detect_init (GstAutoDetect * self)
|
||||
{
|
||||
self->sync = DEFAULT_SYNC;
|
||||
}
|
||||
|
||||
static void
|
||||
gst_auto_detect_constructed (GObject * object)
|
||||
{
|
||||
GstAutoDetect *self = GST_AUTO_DETECT (object);
|
||||
gboolean is_audio;
|
||||
|
||||
if (G_OBJECT_CLASS (parent_class)->constructed)
|
||||
G_OBJECT_CLASS (parent_class)->constructed (object);
|
||||
|
||||
is_audio = !g_strcmp0 (self->media_klass, "Audio");
|
||||
self->type_klass = (self->flag == GST_ELEMENT_FLAG_SINK) ? "Sink" : "Source";
|
||||
self->type_klass_lc = (self->flag == GST_ELEMENT_FLAG_SINK) ? "sink" : "src";
|
||||
self->media_klass_lc = is_audio ? "audio" : "video";
|
||||
/* set the default raw caps */
|
||||
self->filter_caps = gst_static_caps_get (is_audio ? &raw_audio_caps :
|
||||
&raw_video_caps);
|
||||
|
||||
self->pad = gst_ghost_pad_new_no_target (self->type_klass_lc,
|
||||
(self->flag == GST_ELEMENT_FLAG_SINK) ? GST_PAD_SINK : GST_PAD_SRC);
|
||||
gst_element_add_pad (GST_ELEMENT (self), self->pad);
|
||||
|
||||
gst_auto_detect_reset (self);
|
||||
|
||||
/* mark element type */
|
||||
GST_OBJECT_FLAG_SET (self, self->flag);
|
||||
}
|
||||
|
||||
static gboolean
|
||||
gst_auto_detect_factory_filter (GstPluginFeature * feature, gpointer data)
|
||||
{
|
||||
GstAutoDetect *self = (GstAutoDetect *) data;
|
||||
guint rank;
|
||||
const gchar *klass;
|
||||
|
||||
/* we only care about element factories */
|
||||
if (!GST_IS_ELEMENT_FACTORY (feature))
|
||||
return FALSE;
|
||||
|
||||
/* audio sinks */
|
||||
klass = gst_element_factory_get_metadata (GST_ELEMENT_FACTORY (feature),
|
||||
GST_ELEMENT_METADATA_KLASS);
|
||||
if (!(strstr (klass, self->type_klass) && strstr (klass, self->media_klass)))
|
||||
return FALSE;
|
||||
|
||||
/* only select elements with autoplugging rank */
|
||||
rank = gst_plugin_feature_get_rank (feature);
|
||||
if (rank < GST_RANK_MARGINAL)
|
||||
return FALSE;
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
static GstElement *
|
||||
create_element_with_pretty_name (GstAutoDetect * self,
|
||||
GstElementFactory * factory)
|
||||
{
|
||||
GstElement *element;
|
||||
gchar *name, *marker;
|
||||
|
||||
marker = g_strdup (GST_OBJECT_NAME (factory));
|
||||
if (g_str_has_suffix (marker, suffix))
|
||||
if (g_str_has_suffix (marker, self->type_klass_lc))
|
||||
marker[strlen (marker) - 4] = '\0';
|
||||
if (g_str_has_prefix (marker, "gst"))
|
||||
memmove (marker, marker + 3, strlen (marker + 3) + 1);
|
||||
name = g_strdup_printf ("%s-actual-%s-%s", GST_OBJECT_NAME (autodetect),
|
||||
suffix, marker);
|
||||
name = g_strdup_printf ("%s-actual-%s-%s", GST_OBJECT_NAME (self),
|
||||
self->type_klass_lc, marker);
|
||||
g_free (marker);
|
||||
|
||||
element = gst_element_factory_create (factory, name);
|
||||
|
@ -55,7 +239,226 @@ gst_auto_create_element_with_pretty_name (GstElement * autodetect,
|
|||
return element;
|
||||
}
|
||||
|
||||
static GstElement *
|
||||
gst_auto_detect_find_best (GstAutoDetect * self)
|
||||
{
|
||||
GList *list, *item;
|
||||
GstElement *choice = NULL;
|
||||
GstMessage *message = NULL;
|
||||
GSList *errors = NULL;
|
||||
GstBus *bus = gst_bus_new ();
|
||||
GstPad *el_pad = NULL;
|
||||
GstCaps *el_caps = NULL;
|
||||
gboolean no_match = TRUE;
|
||||
|
||||
/* We don't treat sound server sinks special. Our policy is that sound
|
||||
* server sinks that have a rank must not auto-spawn a daemon under any
|
||||
* circumstances, so there's nothing for us to worry about here */
|
||||
list = gst_registry_feature_filter (gst_registry_get (),
|
||||
(GstPluginFeatureFilter) gst_auto_detect_factory_filter, FALSE, self);
|
||||
list =
|
||||
g_list_sort (list, (GCompareFunc) gst_plugin_feature_rank_compare_func);
|
||||
|
||||
GST_LOG_OBJECT (self, "Trying to find usable %s elements ...",
|
||||
self->media_klass_lc);
|
||||
|
||||
for (item = list; item != NULL; item = item->next) {
|
||||
GstElementFactory *f = GST_ELEMENT_FACTORY (item->data);
|
||||
GstElement *el;
|
||||
|
||||
if ((el = create_element_with_pretty_name (self, f))) {
|
||||
GstStateChangeReturn ret;
|
||||
|
||||
GST_DEBUG_OBJECT (self, "Testing %s", GST_OBJECT_NAME (f));
|
||||
|
||||
/* If autodetect has been provided with filter caps,
|
||||
* accept only elements that match with the filter caps */
|
||||
if (self->filter_caps) {
|
||||
el_pad = gst_element_get_static_pad (el, self->type_klass_lc);
|
||||
el_caps = gst_pad_query_caps (el_pad, NULL);
|
||||
gst_object_unref (el_pad);
|
||||
GST_DEBUG_OBJECT (self,
|
||||
"Checking caps: %" GST_PTR_FORMAT " vs. %" GST_PTR_FORMAT,
|
||||
self->filter_caps, el_caps);
|
||||
no_match = !gst_caps_can_intersect (self->filter_caps, el_caps);
|
||||
gst_caps_unref (el_caps);
|
||||
|
||||
if (no_match) {
|
||||
GST_DEBUG_OBJECT (self, "Incompatible caps");
|
||||
gst_object_unref (el);
|
||||
continue;
|
||||
} else {
|
||||
GST_DEBUG_OBJECT (self, "Found compatible caps");
|
||||
}
|
||||
}
|
||||
|
||||
gst_element_set_bus (el, bus);
|
||||
ret = gst_element_set_state (el, GST_STATE_READY);
|
||||
if (ret == GST_STATE_CHANGE_SUCCESS) {
|
||||
GST_DEBUG_OBJECT (self, "This worked!");
|
||||
choice = el;
|
||||
break;
|
||||
}
|
||||
|
||||
/* collect all error messages */
|
||||
while ((message = gst_bus_pop_filtered (bus, GST_MESSAGE_ERROR))) {
|
||||
GST_DEBUG_OBJECT (self, "error message %" GST_PTR_FORMAT, message);
|
||||
errors = g_slist_append (errors, message);
|
||||
}
|
||||
|
||||
gst_element_set_state (el, GST_STATE_NULL);
|
||||
gst_object_unref (el);
|
||||
}
|
||||
}
|
||||
|
||||
GST_DEBUG_OBJECT (self, "done trying");
|
||||
if (!choice) {
|
||||
if (errors) {
|
||||
/* FIXME: we forward the first error for now; but later on it might make
|
||||
* sense to actually analyse them */
|
||||
message = gst_message_ref (GST_MESSAGE (errors->data));
|
||||
GST_DEBUG_OBJECT (self, "reposting message %p", message);
|
||||
gst_element_post_message (GST_ELEMENT_CAST (self), message);
|
||||
} else {
|
||||
/* send warning message to application and use a fakesrc */
|
||||
GST_ELEMENT_WARNING (self, RESOURCE, NOT_FOUND, (NULL),
|
||||
("Failed to find a usable %s %s", self->media_klass_lc,
|
||||
self->type_klass_lc));
|
||||
choice = gst_auto_detect_create_fake_element (self);
|
||||
gst_element_set_state (choice, GST_STATE_READY);
|
||||
}
|
||||
}
|
||||
gst_object_unref (bus);
|
||||
gst_plugin_feature_list_free (list);
|
||||
g_slist_foreach (errors, (GFunc) gst_mini_object_unref, NULL);
|
||||
g_slist_free (errors);
|
||||
|
||||
return choice;
|
||||
}
|
||||
|
||||
static gboolean
|
||||
gst_auto_detect_detect (GstAutoDetect * self)
|
||||
{
|
||||
GstElement *kid;
|
||||
GstAutoDetectClass *klass = GST_AUTO_DETECT_GET_CLASS (self);
|
||||
|
||||
gst_auto_detect_clear_kid (self);
|
||||
|
||||
/* find element */
|
||||
GST_DEBUG_OBJECT (self, "Creating new kid");
|
||||
if (!(kid = gst_auto_detect_find_best (self)))
|
||||
goto no_sink;
|
||||
|
||||
g_object_set (G_OBJECT (kid), "sync", self->sync, NULL);
|
||||
if (klass->configure) {
|
||||
klass->configure (self, kid);
|
||||
}
|
||||
|
||||
self->kid = kid;
|
||||
/* Ensure the child is brought up to the right state to match the parent.
|
||||
* Although it's currently always in READY and we're always doing NULL->READY.
|
||||
*/
|
||||
if (GST_STATE (self->kid) < GST_STATE (self))
|
||||
gst_element_set_state (self->kid, GST_STATE (self));
|
||||
|
||||
gst_bin_add (GST_BIN (self), kid);
|
||||
|
||||
/* attach ghost pad */
|
||||
GST_DEBUG_OBJECT (self, "Re-assigning ghostpad");
|
||||
if (!gst_auto_detect_attach_ghost_pad (self))
|
||||
goto target_failed;
|
||||
|
||||
GST_DEBUG_OBJECT (self, "done changing auto %s %s", self->media_klass_lc,
|
||||
self->type_klass_lc);
|
||||
|
||||
return TRUE;
|
||||
|
||||
/* ERRORS */
|
||||
no_sink:
|
||||
{
|
||||
GST_ELEMENT_ERROR (self, LIBRARY, INIT, (NULL),
|
||||
("Failed to find a supported audio sink"));
|
||||
return FALSE;
|
||||
}
|
||||
target_failed:
|
||||
{
|
||||
GST_ELEMENT_ERROR (self, LIBRARY, INIT, (NULL),
|
||||
("Failed to set target pad"));
|
||||
return FALSE;
|
||||
}
|
||||
}
|
||||
|
||||
static GstStateChangeReturn
|
||||
gst_auto_detect_change_state (GstElement * element, GstStateChange transition)
|
||||
{
|
||||
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
|
||||
GstAutoDetect *sink = GST_AUTO_DETECT (element);
|
||||
|
||||
switch (transition) {
|
||||
case GST_STATE_CHANGE_NULL_TO_READY:
|
||||
if (!gst_auto_detect_detect (sink))
|
||||
return GST_STATE_CHANGE_FAILURE;
|
||||
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_auto_detect_reset (sink);
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void
|
||||
gst_auto_detect_set_property (GObject * object, guint prop_id,
|
||||
const GValue * value, GParamSpec * pspec)
|
||||
{
|
||||
GstAutoDetect *self = GST_AUTO_DETECT (object);
|
||||
|
||||
switch (prop_id) {
|
||||
case PROP_CAPS:
|
||||
if (self->filter_caps)
|
||||
gst_caps_unref (self->filter_caps);
|
||||
self->filter_caps = gst_caps_copy (gst_value_get_caps (value));
|
||||
break;
|
||||
case PROP_SYNC:
|
||||
self->sync = g_value_get_boolean (value);
|
||||
if (self->kid)
|
||||
g_object_set_property (G_OBJECT (self->kid), pspec->name, value);
|
||||
break;
|
||||
default:
|
||||
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
gst_auto_detect_get_property (GObject * object, guint prop_id,
|
||||
GValue * value, GParamSpec * pspec)
|
||||
{
|
||||
GstAutoDetect *self = GST_AUTO_DETECT (object);
|
||||
|
||||
switch (prop_id) {
|
||||
case PROP_CAPS:
|
||||
gst_value_set_caps (value, self->filter_caps);
|
||||
break;
|
||||
case PROP_SYNC:
|
||||
g_value_set_boolean (value, self->sync);
|
||||
break;
|
||||
default:
|
||||
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
static gboolean
|
||||
plugin_init (GstPlugin * plugin)
|
||||
|
|
|
@ -20,11 +20,52 @@
|
|||
#ifndef __GST_AUTO_DETECT_H__
|
||||
#define __GST_AUTO_DETECT_H__
|
||||
|
||||
G_BEGIN_DECLS
|
||||
|
||||
GST_DEBUG_CATEGORY_EXTERN (autodetect_debug);
|
||||
#define GST_CAT_DEFAULT autodetect_debug
|
||||
|
||||
GstElement * gst_auto_create_element_with_pretty_name (
|
||||
GstElement * autodetect, GstElementFactory * factory, const gchar *suffix);
|
||||
#define GST_TYPE_AUTO_DETECT (gst_auto_detect_get_type ())
|
||||
#define GST_AUTO_DETECT(obj) \
|
||||
(G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_AUTO_DETECT, GstAutoDetect))
|
||||
#define GST_AUTO_DETECT_CLASS(klass) \
|
||||
(G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_AUTO_DETECT, GstAutoDetectClass))
|
||||
#define GST_IS_AUTO_DETECT(obj) \
|
||||
(G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_AUTO_DETECT))
|
||||
#define GST_IS_AUTO_DETECT_CLASS(klass) \
|
||||
(G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_AUTO_DETECT))
|
||||
#define GST_AUTO_DETECT_GET_CLASS(obj) \
|
||||
(G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_AUTO_DETECT, GstAutoDetectClass))
|
||||
|
||||
typedef struct _GstAutoDetect {
|
||||
GstBin parent;
|
||||
|
||||
/* configuration for subclasses */
|
||||
const gchar *media_klass; /* Audio/Video/... */
|
||||
GstElementFlags flag; /* GST_ELEMENT_FLAG_{SINK/SOURCE} */
|
||||
|
||||
/* explicit pointers to stuff used */
|
||||
GstPad *pad;
|
||||
GstCaps *filter_caps;
|
||||
gboolean sync;
|
||||
|
||||
/* < private > */
|
||||
GstElement *kid;
|
||||
const gchar *type_klass; /* Source/Sink */
|
||||
const gchar *media_klass_lc, *type_klass_lc; /* lower case versions */
|
||||
|
||||
} GstAutoDetect;
|
||||
|
||||
typedef struct _GstAutoDetectClass {
|
||||
GstBinClass parent_class;
|
||||
|
||||
/*< public >*/
|
||||
/* virtual methods for subclasses */
|
||||
void (*configure)(GstAutoDetect *self, GstElement *kid);
|
||||
} GstAutoDetectClass;
|
||||
|
||||
GType gst_auto_detect_get_type (void);
|
||||
|
||||
G_END_DECLS
|
||||
|
||||
#endif /* __GST_AUTO_DETECT_H__ */
|
||||
|
|
|
@ -39,36 +39,25 @@
|
|||
#include "config.h"
|
||||
#endif
|
||||
|
||||
#include <string.h>
|
||||
|
||||
#include "gstautovideosink.h"
|
||||
#include "gstautodetect.h"
|
||||
|
||||
#define DEFAULT_TS_OFFSET 0
|
||||
#define DEFAULT_SYNC TRUE
|
||||
|
||||
/* Properties */
|
||||
enum
|
||||
{
|
||||
PROP_0,
|
||||
PROP_CAPS,
|
||||
PROP_TS_OFFSET,
|
||||
PROP_SYNC,
|
||||
};
|
||||
|
||||
static GstStateChangeReturn
|
||||
gst_auto_video_sink_change_state (GstElement * element,
|
||||
GstStateChange transition);
|
||||
static void gst_auto_video_sink_dispose (GstAutoVideoSink * sink);
|
||||
static void gst_auto_video_sink_clear_kid (GstAutoVideoSink * sink);
|
||||
|
||||
static void gst_auto_video_sink_set_property (GObject * object, guint prop_id,
|
||||
const GValue * value, GParamSpec * pspec);
|
||||
static void gst_auto_video_sink_get_property (GObject * object, guint prop_id,
|
||||
GValue * value, GParamSpec * pspec);
|
||||
static void gst_auto_video_sink_configure (GstAutoDetect * autodetect,
|
||||
GstElement * kid);
|
||||
|
||||
#define gst_auto_video_sink_parent_class parent_class
|
||||
G_DEFINE_TYPE (GstAutoVideoSink, gst_auto_video_sink, GST_TYPE_BIN);
|
||||
G_DEFINE_TYPE (GstAutoVideoSink, gst_auto_video_sink, GST_TYPE_AUTO_DETECT);
|
||||
|
||||
static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
|
||||
GST_PAD_SINK,
|
||||
|
@ -78,39 +67,20 @@ static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
|
|||
static void
|
||||
gst_auto_video_sink_class_init (GstAutoVideoSinkClass * klass)
|
||||
{
|
||||
GObjectClass *gobject_class;
|
||||
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
|
||||
GstElementClass *eklass = GST_ELEMENT_CLASS (klass);
|
||||
GstAutoDetectClass *aklass = GST_AUTO_DETECT_CLASS (klass);
|
||||
|
||||
gobject_class = G_OBJECT_CLASS (klass);
|
||||
gobject_class->dispose = (GObjectFinalizeFunc) gst_auto_video_sink_dispose;
|
||||
gobject_class->set_property = gst_auto_video_sink_set_property;
|
||||
gobject_class->get_property = gst_auto_video_sink_get_property;
|
||||
|
||||
eklass->change_state = GST_DEBUG_FUNCPTR (gst_auto_video_sink_change_state);
|
||||
/**
|
||||
* GstAutoVideoSink:filter-caps:
|
||||
*
|
||||
* This property will filter out candidate sinks that can handle the specified
|
||||
* caps. By default only video sinks that support raw rgb and yuv video
|
||||
* are selected.
|
||||
*
|
||||
* This property can only be set before the element goes to the READY state.
|
||||
*/
|
||||
g_object_class_install_property (gobject_class, PROP_CAPS,
|
||||
g_param_spec_boxed ("filter-caps", "Filter caps",
|
||||
"Filter sink candidates using these caps.", GST_TYPE_CAPS,
|
||||
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
||||
aklass->configure = gst_auto_video_sink_configure;
|
||||
|
||||
g_object_class_install_property (gobject_class, PROP_TS_OFFSET,
|
||||
g_param_spec_int64 ("ts-offset", "TS Offset",
|
||||
"Timestamp offset in nanoseconds", G_MININT64, G_MAXINT64,
|
||||
DEFAULT_TS_OFFSET, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
||||
|
||||
g_object_class_install_property (gobject_class, PROP_SYNC,
|
||||
g_param_spec_boolean ("sync", "Sync",
|
||||
"Sync on the clock", DEFAULT_SYNC,
|
||||
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
||||
|
||||
gst_element_class_add_pad_template (eklass,
|
||||
gst_static_pad_template_get (&sink_template));
|
||||
gst_element_class_set_static_metadata (eklass, "Auto video sink",
|
||||
|
@ -119,264 +89,23 @@ gst_auto_video_sink_class_init (GstAutoVideoSinkClass * klass)
|
|||
"Jan Schmidt <thaytan@noraisin.net>");
|
||||
}
|
||||
|
||||
static void
|
||||
gst_auto_video_sink_dispose (GstAutoVideoSink * sink)
|
||||
{
|
||||
gst_auto_video_sink_clear_kid (sink);
|
||||
|
||||
if (sink->filter_caps)
|
||||
gst_caps_unref (sink->filter_caps);
|
||||
sink->filter_caps = NULL;
|
||||
|
||||
G_OBJECT_CLASS (parent_class)->dispose ((GObject *) sink);
|
||||
}
|
||||
|
||||
static void
|
||||
gst_auto_video_sink_clear_kid (GstAutoVideoSink * sink)
|
||||
{
|
||||
if (sink->kid) {
|
||||
gst_element_set_state (sink->kid, GST_STATE_NULL);
|
||||
gst_bin_remove (GST_BIN (sink), sink->kid);
|
||||
sink->kid = NULL;
|
||||
/* Don't lose the SINK flag */
|
||||
GST_OBJECT_FLAG_SET (sink, GST_ELEMENT_FLAG_SINK);
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* Hack to make initial linking work; ideally, this'd work even when
|
||||
* no target has been assigned to the ghostpad yet.
|
||||
*/
|
||||
|
||||
static void
|
||||
gst_auto_video_sink_reset (GstAutoVideoSink * sink)
|
||||
{
|
||||
GstPad *targetpad;
|
||||
|
||||
/* Remove any existing element */
|
||||
gst_auto_video_sink_clear_kid (sink);
|
||||
|
||||
/* fakesink placeholder */
|
||||
sink->kid = gst_element_factory_make ("fakesink", "tempsink");
|
||||
gst_bin_add (GST_BIN (sink), sink->kid);
|
||||
|
||||
/* pad, setting this target should always work */
|
||||
targetpad = gst_element_get_static_pad (sink->kid, "sink");
|
||||
gst_ghost_pad_set_target (GST_GHOST_PAD (sink->pad), targetpad);
|
||||
gst_object_unref (targetpad);
|
||||
}
|
||||
|
||||
static GstStaticCaps raw_caps = GST_STATIC_CAPS ("video/x-raw");
|
||||
|
||||
static void
|
||||
gst_auto_video_sink_init (GstAutoVideoSink * sink)
|
||||
{
|
||||
sink->pad = gst_ghost_pad_new_no_target ("sink", GST_PAD_SINK);
|
||||
gst_element_add_pad (GST_ELEMENT (sink), sink->pad);
|
||||
GstAutoDetect *autodetect = GST_AUTO_DETECT (sink);
|
||||
|
||||
gst_auto_video_sink_reset (sink);
|
||||
autodetect->media_klass = "Video";
|
||||
autodetect->flag = GST_ELEMENT_FLAG_SINK;
|
||||
|
||||
/* set the default raw video caps */
|
||||
sink->filter_caps = gst_static_caps_get (&raw_caps);
|
||||
sink->ts_offset = DEFAULT_TS_OFFSET;
|
||||
sink->sync = DEFAULT_SYNC;
|
||||
|
||||
/* mark as sink */
|
||||
GST_OBJECT_FLAG_SET (sink, GST_ELEMENT_FLAG_SINK);
|
||||
}
|
||||
|
||||
static gboolean
|
||||
gst_auto_video_sink_factory_filter (GstPluginFeature * feature, gpointer data)
|
||||
static void
|
||||
gst_auto_video_sink_configure (GstAutoDetect * autodetect, GstElement * kid)
|
||||
{
|
||||
guint rank;
|
||||
const gchar *klass;
|
||||
GstAutoVideoSink *self = GST_AUTO_VIDEO_SINK (autodetect);
|
||||
|
||||
/* we only care about element factories */
|
||||
if (!GST_IS_ELEMENT_FACTORY (feature))
|
||||
return FALSE;
|
||||
|
||||
/* video sinks */
|
||||
klass = gst_element_factory_get_metadata (GST_ELEMENT_FACTORY (feature),
|
||||
GST_ELEMENT_METADATA_KLASS);
|
||||
if (!(strstr (klass, "Sink") && strstr (klass, "Video")))
|
||||
return FALSE;
|
||||
|
||||
/* only select elements with autoplugging rank */
|
||||
rank = gst_plugin_feature_get_rank (feature);
|
||||
if (rank < GST_RANK_MARGINAL)
|
||||
return FALSE;
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
static GstElement *
|
||||
gst_auto_video_sink_find_best (GstAutoVideoSink * sink)
|
||||
{
|
||||
GList *list, *item;
|
||||
GstElement *choice = NULL;
|
||||
GstMessage *message = NULL;
|
||||
GSList *errors = NULL;
|
||||
GstBus *bus = gst_bus_new ();
|
||||
GstPad *el_pad = NULL;
|
||||
GstCaps *el_caps = NULL;
|
||||
gboolean no_match = TRUE;
|
||||
|
||||
list = gst_registry_feature_filter (gst_registry_get (),
|
||||
(GstPluginFeatureFilter) gst_auto_video_sink_factory_filter, FALSE, sink);
|
||||
list =
|
||||
g_list_sort (list, (GCompareFunc) gst_plugin_feature_rank_compare_func);
|
||||
|
||||
GST_LOG_OBJECT (sink, "Trying to find usable video devices ...");
|
||||
|
||||
for (item = list; item != NULL; item = item->next) {
|
||||
GstElementFactory *f = GST_ELEMENT_FACTORY (item->data);
|
||||
GstElement *el;
|
||||
|
||||
if ((el = gst_auto_create_element_with_pretty_name (GST_ELEMENT_CAST (sink),
|
||||
f, "sink"))) {
|
||||
GstStateChangeReturn ret;
|
||||
|
||||
GST_DEBUG_OBJECT (sink, "Testing %s", GST_OBJECT_NAME (f));
|
||||
|
||||
/* If autovideosink has been provided with filter caps,
|
||||
* accept only sinks that match with the filter caps */
|
||||
if (sink->filter_caps) {
|
||||
el_pad = gst_element_get_static_pad (GST_ELEMENT (el), "sink");
|
||||
el_caps = gst_pad_query_caps (el_pad, NULL);
|
||||
gst_object_unref (el_pad);
|
||||
GST_DEBUG_OBJECT (sink,
|
||||
"Checking caps: %" GST_PTR_FORMAT " vs. %" GST_PTR_FORMAT,
|
||||
sink->filter_caps, el_caps);
|
||||
no_match = !gst_caps_can_intersect (sink->filter_caps, el_caps);
|
||||
gst_caps_unref (el_caps);
|
||||
|
||||
if (no_match) {
|
||||
GST_DEBUG_OBJECT (sink, "Incompatible caps");
|
||||
gst_object_unref (el);
|
||||
continue;
|
||||
} else {
|
||||
GST_DEBUG_OBJECT (sink, "Found compatible caps");
|
||||
}
|
||||
}
|
||||
|
||||
gst_element_set_bus (el, bus);
|
||||
ret = gst_element_set_state (el, GST_STATE_READY);
|
||||
if (ret == GST_STATE_CHANGE_SUCCESS) {
|
||||
GST_DEBUG_OBJECT (sink, "This worked!");
|
||||
choice = el;
|
||||
break;
|
||||
}
|
||||
|
||||
/* collect all error messages */
|
||||
while ((message = gst_bus_pop_filtered (bus, GST_MESSAGE_ERROR))) {
|
||||
GST_DEBUG_OBJECT (sink, "error message %" GST_PTR_FORMAT, message);
|
||||
errors = g_slist_append (errors, message);
|
||||
}
|
||||
|
||||
gst_element_set_state (el, GST_STATE_NULL);
|
||||
gst_object_unref (el);
|
||||
}
|
||||
}
|
||||
|
||||
GST_DEBUG_OBJECT (sink, "done trying");
|
||||
if (!choice) {
|
||||
if (errors) {
|
||||
/* FIXME: we forward the first error for now; but later on it might make
|
||||
* sense to actually analyse them */
|
||||
gst_message_ref (GST_MESSAGE (errors->data));
|
||||
GST_DEBUG_OBJECT (sink, "reposting message %p", errors->data);
|
||||
gst_element_post_message (GST_ELEMENT (sink), GST_MESSAGE (errors->data));
|
||||
} else {
|
||||
/* send warning message to application and use a fakesink */
|
||||
GST_ELEMENT_WARNING (sink, RESOURCE, NOT_FOUND, (NULL),
|
||||
("Failed to find a usable video sink"));
|
||||
choice = gst_element_factory_make ("fakesink", "fake-video-sink");
|
||||
if (g_object_class_find_property (G_OBJECT_GET_CLASS (choice), "sync"))
|
||||
g_object_set (choice, "sync", TRUE, NULL);
|
||||
gst_element_set_state (choice, GST_STATE_READY);
|
||||
}
|
||||
}
|
||||
gst_object_unref (bus);
|
||||
gst_plugin_feature_list_free (list);
|
||||
g_slist_foreach (errors, (GFunc) gst_mini_object_unref, NULL);
|
||||
g_slist_free (errors);
|
||||
|
||||
return choice;
|
||||
}
|
||||
|
||||
static gboolean
|
||||
gst_auto_video_sink_detect (GstAutoVideoSink * sink)
|
||||
{
|
||||
GstElement *esink;
|
||||
GstPad *targetpad;
|
||||
|
||||
gst_auto_video_sink_clear_kid (sink);
|
||||
|
||||
/* find element */
|
||||
GST_DEBUG_OBJECT (sink, "Creating new kid");
|
||||
if (!(esink = gst_auto_video_sink_find_best (sink)))
|
||||
goto no_sink;
|
||||
|
||||
g_object_set (G_OBJECT (esink), "ts-offset", sink->ts_offset, NULL);
|
||||
g_object_set (G_OBJECT (esink), "sync", sink->sync, NULL);
|
||||
|
||||
sink->kid = esink;
|
||||
gst_bin_add (GST_BIN (sink), esink);
|
||||
|
||||
/* attach ghost pad */
|
||||
GST_DEBUG_OBJECT (sink, "Re-assigning ghostpad");
|
||||
targetpad = gst_element_get_static_pad (sink->kid, "sink");
|
||||
if (!gst_ghost_pad_set_target (GST_GHOST_PAD (sink->pad), targetpad))
|
||||
goto target_failed;
|
||||
|
||||
gst_object_unref (targetpad);
|
||||
GST_DEBUG_OBJECT (sink, "done changing auto video sink");
|
||||
|
||||
return TRUE;
|
||||
|
||||
/* ERRORS */
|
||||
no_sink:
|
||||
{
|
||||
GST_ELEMENT_ERROR (sink, LIBRARY, INIT, (NULL),
|
||||
("Failed to find a supported video sink"));
|
||||
return FALSE;
|
||||
}
|
||||
target_failed:
|
||||
{
|
||||
GST_ELEMENT_ERROR (sink, LIBRARY, INIT, (NULL),
|
||||
("Failed to set target pad"));
|
||||
gst_object_unref (targetpad);
|
||||
return FALSE;
|
||||
}
|
||||
}
|
||||
|
||||
static GstStateChangeReturn
|
||||
gst_auto_video_sink_change_state (GstElement * element,
|
||||
GstStateChange transition)
|
||||
{
|
||||
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
|
||||
GstAutoVideoSink *sink = GST_AUTO_VIDEO_SINK (element);
|
||||
|
||||
switch (transition) {
|
||||
case GST_STATE_CHANGE_NULL_TO_READY:
|
||||
if (!gst_auto_video_sink_detect (sink))
|
||||
return GST_STATE_CHANGE_FAILURE;
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
|
||||
|
||||
switch (transition) {
|
||||
case GST_STATE_CHANGE_READY_TO_NULL:
|
||||
gst_auto_video_sink_reset (sink);
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
return ret;
|
||||
g_object_set (G_OBJECT (kid), "ts-offset", self->ts_offset, NULL);
|
||||
}
|
||||
|
||||
static void
|
||||
|
@ -384,22 +113,13 @@ gst_auto_video_sink_set_property (GObject * object, guint prop_id,
|
|||
const GValue * value, GParamSpec * pspec)
|
||||
{
|
||||
GstAutoVideoSink *sink = GST_AUTO_VIDEO_SINK (object);
|
||||
GstAutoDetect *autodetect = (GstAutoDetect *) sink;
|
||||
|
||||
switch (prop_id) {
|
||||
case PROP_CAPS:
|
||||
if (sink->filter_caps)
|
||||
gst_caps_unref (sink->filter_caps);
|
||||
sink->filter_caps = gst_caps_copy (gst_value_get_caps (value));
|
||||
break;
|
||||
case PROP_TS_OFFSET:
|
||||
sink->ts_offset = g_value_get_int64 (value);
|
||||
if (sink->kid)
|
||||
g_object_set_property (G_OBJECT (sink->kid), pspec->name, value);
|
||||
break;
|
||||
case PROP_SYNC:
|
||||
sink->sync = g_value_get_boolean (value);
|
||||
if (sink->kid)
|
||||
g_object_set_property (G_OBJECT (sink->kid), pspec->name, value);
|
||||
if (autodetect->kid)
|
||||
g_object_set_property (G_OBJECT (autodetect->kid), pspec->name, value);
|
||||
break;
|
||||
default:
|
||||
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
||||
|
@ -414,16 +134,9 @@ gst_auto_video_sink_get_property (GObject * object, guint prop_id,
|
|||
GstAutoVideoSink *sink = GST_AUTO_VIDEO_SINK (object);
|
||||
|
||||
switch (prop_id) {
|
||||
case PROP_CAPS:{
|
||||
gst_value_set_caps (value, sink->filter_caps);
|
||||
break;
|
||||
}
|
||||
case PROP_TS_OFFSET:
|
||||
g_value_set_int64 (value, sink->ts_offset);
|
||||
break;
|
||||
case PROP_SYNC:
|
||||
g_value_set_boolean (value, sink->sync);
|
||||
break;
|
||||
default:
|
||||
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
||||
break;
|
||||
|
|
|
@ -21,6 +21,7 @@
|
|||
#define __GST_AUTO_VIDEO_SINK_H__
|
||||
|
||||
#include <gst/gst.h>
|
||||
#include "gstautodetect.h"
|
||||
|
||||
G_BEGIN_DECLS
|
||||
|
||||
|
@ -38,18 +39,13 @@ G_BEGIN_DECLS
|
|||
(G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_AUTO_VIDEO_SINK))
|
||||
|
||||
typedef struct _GstAutoVideoSink {
|
||||
GstBin parent;
|
||||
GstAutoDetect parent;
|
||||
|
||||
/* explicit pointers to stuff used */
|
||||
GstPad *pad;
|
||||
GstElement *kid;
|
||||
GstCaps *filter_caps;
|
||||
GstClockTimeDiff ts_offset;
|
||||
gboolean sync;
|
||||
} GstAutoVideoSink;
|
||||
|
||||
typedef struct _GstAutoVideoSinkClass {
|
||||
GstBinClass parent_class;
|
||||
GstAutoDetectClass parent_class;
|
||||
} GstAutoVideoSinkClass;
|
||||
|
||||
GType gst_auto_video_sink_get_type (void);
|
||||
|
|
|
@ -40,31 +40,9 @@
|
|||
#include "config.h"
|
||||
#endif
|
||||
|
||||
#include <string.h>
|
||||
|
||||
#include "gstautovideosrc.h"
|
||||
#include "gstautodetect.h"
|
||||
|
||||
/* Properties */
|
||||
enum
|
||||
{
|
||||
PROP_0,
|
||||
PROP_CAPS,
|
||||
};
|
||||
|
||||
static GstStateChangeReturn
|
||||
gst_auto_video_src_change_state (GstElement * element,
|
||||
GstStateChange transition);
|
||||
static void gst_auto_video_src_dispose (GstAutoVideoSrc * src);
|
||||
static void gst_auto_video_src_clear_kid (GstAutoVideoSrc * src);
|
||||
|
||||
static void gst_auto_video_src_set_property (GObject * object, guint prop_id,
|
||||
const GValue * value, GParamSpec * pspec);
|
||||
static void gst_auto_video_src_get_property (GObject * object, guint prop_id,
|
||||
GValue * value, GParamSpec * pspec);
|
||||
|
||||
#define gst_auto_video_src_parent_class parent_class
|
||||
G_DEFINE_TYPE (GstAutoVideoSrc, gst_auto_video_src, GST_TYPE_BIN);
|
||||
G_DEFINE_TYPE (GstAutoVideoSrc, gst_auto_video_src, GST_TYPE_AUTO_DETECT);
|
||||
|
||||
static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
|
||||
GST_PAD_SRC,
|
||||
|
@ -74,30 +52,8 @@ static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
|
|||
static void
|
||||
gst_auto_video_src_class_init (GstAutoVideoSrcClass * klass)
|
||||
{
|
||||
GObjectClass *gobject_class;
|
||||
GstElementClass *eklass = GST_ELEMENT_CLASS (klass);
|
||||
|
||||
gobject_class = G_OBJECT_CLASS (klass);
|
||||
gobject_class->dispose = (GObjectFinalizeFunc) gst_auto_video_src_dispose;
|
||||
gobject_class->set_property = gst_auto_video_src_set_property;
|
||||
gobject_class->get_property = gst_auto_video_src_get_property;
|
||||
|
||||
eklass->change_state = GST_DEBUG_FUNCPTR (gst_auto_video_src_change_state);
|
||||
|
||||
/**
|
||||
* GstAutoVideoSrc:filter-caps:
|
||||
*
|
||||
* This property will filter out candidate sources that can handle the specified
|
||||
* caps. By default only video sources that support raw rgb and yuv video
|
||||
* are selected.
|
||||
*
|
||||
* This property can only be set before the element goes to the READY state.
|
||||
*/
|
||||
g_object_class_install_property (gobject_class, PROP_CAPS,
|
||||
g_param_spec_boxed ("filter-caps", "Filter caps",
|
||||
"Filter src candidates using these caps.", GST_TYPE_CAPS,
|
||||
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
||||
|
||||
gst_element_class_add_pad_template (eklass,
|
||||
gst_static_pad_template_get (&src_template));
|
||||
gst_element_class_set_static_metadata (eklass, "Auto video source",
|
||||
|
@ -107,292 +63,11 @@ gst_auto_video_src_class_init (GstAutoVideoSrcClass * klass)
|
|||
"Stefan Kost <ensonic@users.sf.net>");
|
||||
}
|
||||
|
||||
static void
|
||||
gst_auto_video_src_dispose (GstAutoVideoSrc * src)
|
||||
{
|
||||
gst_auto_video_src_clear_kid (src);
|
||||
|
||||
if (src->filter_caps)
|
||||
gst_caps_unref (src->filter_caps);
|
||||
src->filter_caps = NULL;
|
||||
|
||||
G_OBJECT_CLASS (parent_class)->dispose ((GObject *) src);
|
||||
}
|
||||
|
||||
static void
|
||||
gst_auto_video_src_clear_kid (GstAutoVideoSrc * src)
|
||||
{
|
||||
if (src->kid) {
|
||||
gst_element_set_state (src->kid, GST_STATE_NULL);
|
||||
gst_bin_remove (GST_BIN (src), src->kid);
|
||||
src->kid = NULL;
|
||||
/* Don't loose SOURCE flag */
|
||||
GST_OBJECT_FLAG_SET (src, GST_ELEMENT_FLAG_SOURCE);
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* Hack to make initial linking work; ideally, this'd work even when
|
||||
* no target has been assigned to the ghostpad yet.
|
||||
*/
|
||||
|
||||
static void
|
||||
gst_auto_video_src_reset (GstAutoVideoSrc * src)
|
||||
{
|
||||
GstPad *targetpad;
|
||||
|
||||
/* Remove any existing element */
|
||||
gst_auto_video_src_clear_kid (src);
|
||||
|
||||
/* fakesrc placeholder */
|
||||
src->kid = gst_element_factory_make ("fakesrc", "tempsrc");
|
||||
gst_bin_add (GST_BIN (src), src->kid);
|
||||
|
||||
/* pad */
|
||||
targetpad = gst_element_get_static_pad (src->kid, "src");
|
||||
gst_ghost_pad_set_target (GST_GHOST_PAD (src->pad), targetpad);
|
||||
gst_object_unref (targetpad);
|
||||
}
|
||||
|
||||
static GstStaticCaps raw_caps = GST_STATIC_CAPS ("video/x-raw");
|
||||
|
||||
static void
|
||||
gst_auto_video_src_init (GstAutoVideoSrc * src)
|
||||
{
|
||||
src->pad = gst_ghost_pad_new_no_target ("src", GST_PAD_SRC);
|
||||
gst_element_add_pad (GST_ELEMENT (src), src->pad);
|
||||
GstAutoDetect *autodetect = GST_AUTO_DETECT (src);
|
||||
|
||||
gst_auto_video_src_reset (src);
|
||||
|
||||
/* set the default raw video caps */
|
||||
src->filter_caps = gst_static_caps_get (&raw_caps);
|
||||
|
||||
/* mark as source */
|
||||
GST_OBJECT_FLAG_SET (src, GST_ELEMENT_FLAG_SOURCE);
|
||||
}
|
||||
|
||||
static gboolean
|
||||
gst_auto_video_src_factory_filter (GstPluginFeature * feature, gpointer data)
|
||||
{
|
||||
guint rank;
|
||||
const gchar *klass;
|
||||
|
||||
/* we only care about element factories */
|
||||
if (!GST_IS_ELEMENT_FACTORY (feature))
|
||||
return FALSE;
|
||||
|
||||
/* video sources */
|
||||
klass = gst_element_factory_get_metadata (GST_ELEMENT_FACTORY (feature),
|
||||
GST_ELEMENT_METADATA_KLASS);
|
||||
if (!(strstr (klass, "Source") && strstr (klass, "Video")))
|
||||
return FALSE;
|
||||
|
||||
/* only select elements with autoplugging rank */
|
||||
rank = gst_plugin_feature_get_rank (feature);
|
||||
if (rank < GST_RANK_MARGINAL)
|
||||
return FALSE;
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
static GstElement *
|
||||
gst_auto_video_src_find_best (GstAutoVideoSrc * src)
|
||||
{
|
||||
GList *list, *item;
|
||||
GstElement *choice = NULL;
|
||||
GstMessage *message = NULL;
|
||||
GSList *errors = NULL;
|
||||
GstBus *bus = gst_bus_new ();
|
||||
GstPad *el_pad = NULL;
|
||||
GstCaps *el_caps = NULL;
|
||||
gboolean no_match = TRUE;
|
||||
|
||||
list = gst_registry_feature_filter (gst_registry_get (),
|
||||
(GstPluginFeatureFilter) gst_auto_video_src_factory_filter, FALSE, src);
|
||||
list =
|
||||
g_list_sort (list, (GCompareFunc) gst_plugin_feature_rank_compare_func);
|
||||
|
||||
GST_LOG_OBJECT (src, "Trying to find usable video devices ...");
|
||||
|
||||
for (item = list; item != NULL; item = item->next) {
|
||||
GstElementFactory *f = GST_ELEMENT_FACTORY (item->data);
|
||||
GstElement *el;
|
||||
|
||||
if ((el = gst_auto_create_element_with_pretty_name (GST_ELEMENT_CAST (src),
|
||||
f, "src"))) {
|
||||
GstStateChangeReturn ret;
|
||||
|
||||
GST_DEBUG_OBJECT (src, "Testing %s", GST_OBJECT_NAME (f));
|
||||
|
||||
/* If AutoVideoSrc has been provided with filter caps,
|
||||
* accept only sources that match with the filter caps */
|
||||
if (src->filter_caps) {
|
||||
el_pad = gst_element_get_static_pad (GST_ELEMENT (el), "src");
|
||||
el_caps = gst_pad_query_caps (el_pad, NULL);
|
||||
gst_object_unref (el_pad);
|
||||
GST_DEBUG_OBJECT (src,
|
||||
"Checking caps: %" GST_PTR_FORMAT " vs. %" GST_PTR_FORMAT,
|
||||
src->filter_caps, el_caps);
|
||||
no_match = !gst_caps_can_intersect (src->filter_caps, el_caps);
|
||||
gst_caps_unref (el_caps);
|
||||
|
||||
if (no_match) {
|
||||
GST_DEBUG_OBJECT (src, "Incompatible caps");
|
||||
gst_object_unref (el);
|
||||
continue;
|
||||
} else {
|
||||
GST_DEBUG_OBJECT (src, "Found compatible caps");
|
||||
}
|
||||
}
|
||||
|
||||
gst_element_set_bus (el, bus);
|
||||
ret = gst_element_set_state (el, GST_STATE_READY);
|
||||
if (ret == GST_STATE_CHANGE_SUCCESS) {
|
||||
GST_DEBUG_OBJECT (src, "This worked!");
|
||||
choice = el;
|
||||
break;
|
||||
}
|
||||
|
||||
/* collect all error messages */
|
||||
while ((message = gst_bus_pop_filtered (bus, GST_MESSAGE_ERROR))) {
|
||||
GST_DEBUG_OBJECT (src, "error message %" GST_PTR_FORMAT, message);
|
||||
errors = g_slist_append (errors, message);
|
||||
}
|
||||
|
||||
gst_element_set_state (el, GST_STATE_NULL);
|
||||
gst_object_unref (el);
|
||||
}
|
||||
}
|
||||
|
||||
GST_DEBUG_OBJECT (src, "done trying");
|
||||
if (!choice) {
|
||||
if (errors) {
|
||||
/* FIXME: we forward the first error for now; but later on it might make
|
||||
* sense to actually analyse them */
|
||||
gst_message_ref (GST_MESSAGE (errors->data));
|
||||
GST_DEBUG_OBJECT (src, "reposting message %p", errors->data);
|
||||
gst_element_post_message (GST_ELEMENT (src), GST_MESSAGE (errors->data));
|
||||
} else {
|
||||
/* send warning message to application and use a fakesrc */
|
||||
GST_ELEMENT_WARNING (src, RESOURCE, NOT_FOUND, (NULL),
|
||||
("Failed to find a usable video source"));
|
||||
choice = gst_element_factory_make ("fakesrc", "fake-video-src");
|
||||
if (g_object_class_find_property (G_OBJECT_GET_CLASS (choice), "sync"))
|
||||
g_object_set (choice, "sync", TRUE, NULL);
|
||||
gst_element_set_state (choice, GST_STATE_READY);
|
||||
}
|
||||
}
|
||||
gst_object_unref (bus);
|
||||
gst_plugin_feature_list_free (list);
|
||||
g_slist_foreach (errors, (GFunc) gst_mini_object_unref, NULL);
|
||||
g_slist_free (errors);
|
||||
|
||||
return choice;
|
||||
}
|
||||
|
||||
static gboolean
|
||||
gst_auto_video_src_detect (GstAutoVideoSrc * src)
|
||||
{
|
||||
GstElement *esrc;
|
||||
GstPad *targetpad;
|
||||
|
||||
gst_auto_video_src_clear_kid (src);
|
||||
|
||||
/* find element */
|
||||
GST_DEBUG_OBJECT (src, "Creating new kid");
|
||||
if (!(esrc = gst_auto_video_src_find_best (src)))
|
||||
goto no_src;
|
||||
|
||||
src->kid = esrc;
|
||||
gst_bin_add (GST_BIN (src), esrc);
|
||||
|
||||
/* attach ghost pad */
|
||||
GST_DEBUG_OBJECT (src, "Re-assigning ghostpad");
|
||||
targetpad = gst_element_get_static_pad (src->kid, "src");
|
||||
if (!gst_ghost_pad_set_target (GST_GHOST_PAD (src->pad), targetpad))
|
||||
goto target_failed;
|
||||
|
||||
gst_object_unref (targetpad);
|
||||
GST_DEBUG_OBJECT (src, "done changing auto video source");
|
||||
|
||||
return TRUE;
|
||||
|
||||
/* ERRORS */
|
||||
no_src:
|
||||
{
|
||||
GST_ELEMENT_ERROR (src, LIBRARY, INIT, (NULL),
|
||||
("Failed to find a supported video source"));
|
||||
return FALSE;
|
||||
}
|
||||
target_failed:
|
||||
{
|
||||
GST_ELEMENT_ERROR (src, LIBRARY, INIT, (NULL),
|
||||
("Failed to set target pad"));
|
||||
gst_object_unref (targetpad);
|
||||
return FALSE;
|
||||
}
|
||||
}
|
||||
|
||||
static GstStateChangeReturn
|
||||
gst_auto_video_src_change_state (GstElement * element,
|
||||
GstStateChange transition)
|
||||
{
|
||||
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
|
||||
GstAutoVideoSrc *src = GST_AUTO_VIDEO_SRC (element);
|
||||
|
||||
switch (transition) {
|
||||
case GST_STATE_CHANGE_NULL_TO_READY:
|
||||
if (!gst_auto_video_src_detect (src))
|
||||
return GST_STATE_CHANGE_FAILURE;
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
|
||||
|
||||
switch (transition) {
|
||||
case GST_STATE_CHANGE_READY_TO_NULL:
|
||||
gst_auto_video_src_reset (src);
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void
|
||||
gst_auto_video_src_set_property (GObject * object, guint prop_id,
|
||||
const GValue * value, GParamSpec * pspec)
|
||||
{
|
||||
GstAutoVideoSrc *src = GST_AUTO_VIDEO_SRC (object);
|
||||
|
||||
switch (prop_id) {
|
||||
case PROP_CAPS:
|
||||
if (src->filter_caps)
|
||||
gst_caps_unref (src->filter_caps);
|
||||
src->filter_caps = gst_caps_copy (gst_value_get_caps (value));
|
||||
break;
|
||||
default:
|
||||
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
gst_auto_video_src_get_property (GObject * object, guint prop_id,
|
||||
GValue * value, GParamSpec * pspec)
|
||||
{
|
||||
GstAutoVideoSrc *src = GST_AUTO_VIDEO_SRC (object);
|
||||
|
||||
switch (prop_id) {
|
||||
case PROP_CAPS:{
|
||||
gst_value_set_caps (value, src->filter_caps);
|
||||
break;
|
||||
}
|
||||
default:
|
||||
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
||||
break;
|
||||
}
|
||||
autodetect->media_klass = "Video";
|
||||
autodetect->flag = GST_ELEMENT_FLAG_SOURCE;
|
||||
}
|
||||
|
|
|
@ -22,6 +22,7 @@
|
|||
#define __GST_AUTO_VIDEO_SRC_H__
|
||||
|
||||
#include <gst/gst.h>
|
||||
#include "gstautodetect.h"
|
||||
|
||||
G_BEGIN_DECLS
|
||||
|
||||
|
@ -39,16 +40,11 @@ G_BEGIN_DECLS
|
|||
(G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_AUTO_VIDEO_SRC))
|
||||
|
||||
typedef struct _GstAutoVideoSrc {
|
||||
GstBin parent;
|
||||
|
||||
/* explicit pointers to stuff used */
|
||||
GstPad *pad;
|
||||
GstElement *kid;
|
||||
GstCaps *filter_caps;
|
||||
GstAutoDetect parent;
|
||||
} GstAutoVideoSrc;
|
||||
|
||||
typedef struct _GstAutoVideoSrcClass {
|
||||
GstBinClass parent_class;
|
||||
GstAutoDetectClass parent_class;
|
||||
} GstAutoVideoSrcClass;
|
||||
|
||||
GType gst_auto_video_src_get_type (void);
|
||||
|
|
Loading…
Reference in a new issue