/* GStreamer * Copyright (C) 2003 Julien Moutte * * 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. */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include #include #include #include #include "play.h" #define TICK_INTERVAL_MSEC 200 GST_DEBUG_CATEGORY_STATIC (play_debug); #define GST_CAT_DEFAULT play_debug enum { TIME_TICK, STREAM_LENGTH, HAVE_VIDEO_SIZE, LAST_SIGNAL }; struct _GstPlayPrivate { /* progress indicators */ guint64 time_nanos; guint64 length_nanos; gint get_length_attempt; guint tick_id; /* playbin object */ GstElement *playbin; /* visualization */ gboolean enable_vis; GstElement *vis_element; /* location */ char *location; }; static guint gst_play_signals[LAST_SIGNAL] = { 0 }; static GstPipelineClass *parent_class = NULL; /* ======================================================= */ /* */ /* Private Methods */ /* */ /* ======================================================= */ static void caps_set (GstPad * pad, GParamSpec * pspec, GstPlay * play) { const GstCaps *caps = GST_PAD_CAPS (pad); GstStructure *s = gst_caps_get_structure (caps, 0); if (s) { const GValue *par; gint w, h; /* get effective size */ gst_structure_get_int (s, "width", &w); gst_structure_get_int (s, "height", &h); if ((par = gst_structure_get_value (s, "pixel-aspect-ratio"))) { gint num = gst_value_get_fraction_numerator (par), den = gst_value_get_fraction_denominator (par); if (num > den) w *= (gfloat) num / den; else h *= (gfloat) den / num; } g_signal_emit (play, gst_play_signals[HAVE_VIDEO_SIZE], 0, w, h); g_signal_handlers_disconnect_by_func (pad, caps_set, play); } } static void setup_size (GstPlay * play) { const GList *streaminfo = NULL; GstPad *pad = NULL; g_object_get (G_OBJECT (play->priv->playbin), "stream-info", &streaminfo, NULL); for (; streaminfo != NULL; streaminfo = streaminfo->next) { GObject *info = streaminfo->data; gint type; GParamSpec *pspec; GEnumValue *val; g_object_get (info, "type", &type, NULL); pspec = g_object_class_find_property (G_OBJECT_GET_CLASS (info), "type"); val = g_enum_get_value (G_PARAM_SPEC_ENUM (pspec)->enum_class, type); if (g_strrstr (val->value_name, "VIDEO")) { g_object_get (info, "object", &pad, NULL); pad = (GstPad *) GST_PAD_REALIZE (pad); break; } } if (pad) { /* handle explicit caps as well - they're set later */ if (GST_PAD_CAPS (pad)) caps_set (pad, NULL, play); else g_signal_connect (pad, "notify::caps", G_CALLBACK (caps_set), play); } } static gboolean gst_play_tick_callback (GstPlay * play) { GstFormat fmt = GST_FORMAT_TIME; gint64 value; /* check length/pos of stream */ if (!GST_CLOCK_TIME_IS_VALID (play->priv->length_nanos) && play->priv->get_length_attempt < 16) { if (gst_element_query (GST_ELEMENT (play->priv->playbin), GST_QUERY_TOTAL, &fmt, &value)) { play->priv->length_nanos = value; g_signal_emit (G_OBJECT (play), gst_play_signals[STREAM_LENGTH], 0, play->priv->length_nanos); } play->priv->get_length_attempt++; } if (gst_element_query (GST_ELEMENT (play->priv->playbin), GST_QUERY_POSITION, &fmt, &value)) { play->priv->time_nanos = value; g_signal_emit (G_OBJECT (play), gst_play_signals[TIME_TICK], 0, play->priv->time_nanos); } return TRUE; } /* * Virtual function. */ static void gst_play_change_state (GstElement * element, GstElementState old, GstElementState new, gpointer data) { GstPlay *play = GST_PLAY (data); gint t = (old << 8) | new; /* now set up tickers */ switch (t) { case GST_STATE_PAUSED_TO_PLAYING: play->priv->tick_id = g_timeout_add (TICK_INTERVAL_MSEC, (GSourceFunc) gst_play_tick_callback, play); break; case GST_STATE_PLAYING_TO_PAUSED: if (play->priv->tick_id != 0) { g_source_remove (play->priv->tick_id); play->priv->tick_id = 0; } break; case GST_STATE_PAUSED_TO_READY: play->priv->length_nanos = GST_CLOCK_TIME_NONE; play->priv->time_nanos = GST_CLOCK_TIME_NONE; play->priv->get_length_attempt = 0; break; case GST_STATE_READY_TO_PAUSED: setup_size (play); break; default: break; } } /* =========================================== */ /* */ /* Init & Dispose & Class init */ /* */ /* =========================================== */ static void gst_play_dispose (GObject * object) { GstPlay *play = GST_PLAY (object); /* reset */ gst_element_set_state (GST_ELEMENT (play), GST_STATE_NULL); /* no vis */ if (play->priv->vis_element) { gst_object_unref (GST_OBJECT (play->priv->vis_element)); play->priv->vis_element = NULL; } g_free (play->priv->location); play->priv->location = NULL; /* parent will clean up the rest */ G_OBJECT_CLASS (parent_class)->dispose (object); } static void gst_play_init (GstPlay * play) { play->priv = g_new0 (GstPlayPrivate, 1); /* default */ play->priv->length_nanos = GST_CLOCK_TIME_NONE; play->priv->time_nanos = GST_CLOCK_TIME_NONE; play->priv->tick_id = 0; play->priv->get_length_attempt = 0; play->priv->enable_vis = FALSE; play->priv->vis_element = NULL; play->priv->location = NULL; /* make playbin */ play->priv->playbin = gst_element_factory_make ("playbin", "player"); if (play->priv->playbin) { gst_bin_add (GST_BIN (play), play->priv->playbin); g_signal_connect (play->priv->playbin, "state-change", G_CALLBACK (gst_play_change_state), play); } } static void gst_play_class_init (GstPlayClass * klass) { GObjectClass *gobject_class = G_OBJECT_CLASS (klass); parent_class = g_type_class_ref (GST_TYPE_PIPELINE); gobject_class->dispose = gst_play_dispose; gst_play_signals[TIME_TICK] = g_signal_new ("time-tick", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (GstPlayClass, time_tick), NULL, NULL, gst_marshal_VOID__INT64, G_TYPE_NONE, 1, G_TYPE_INT64); gst_play_signals[STREAM_LENGTH] = g_signal_new ("stream-length", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (GstPlayClass, stream_length), NULL, NULL, gst_marshal_VOID__INT64, G_TYPE_NONE, 1, G_TYPE_INT64); gst_play_signals[HAVE_VIDEO_SIZE] = g_signal_new ("have-video-size", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (GstPlayClass, have_video_size), NULL, NULL, gst_marshal_VOID__INT_INT, G_TYPE_NONE, 2, G_TYPE_INT, G_TYPE_INT); GST_DEBUG_CATEGORY_INIT (play_debug, "GST_PLAY", 0, "GStreamer Play library"); GST_DEBUG ("Play class initialized"); } /* ======================================================= */ /* */ /* Public Methods */ /* */ /* ======================================================= */ /** * gst_play_set_location: * @play: a #GstPlay. * @location: a const #char* indicating location to play * * Set location of @play to @location. * * Returns: TRUE if location was set successfully. */ gboolean gst_play_set_location (GstPlay * play, const char *location) { char *uri; g_return_val_if_fail (play != NULL, FALSE); g_return_val_if_fail (GST_IS_PLAY (play), FALSE); g_return_val_if_fail (location != NULL, FALSE); /* cache */ if (play->priv->location) g_free (play->priv->location); play->priv->location = g_strdup (location); /* get file */ gst_element_set_state (play->priv->playbin, GST_STATE_READY); if (strchr (location, ':')) uri = g_strdup (location); else if (location[0] == '/') uri = g_strdup_printf ("file://%s", location); else { char cwd[256]; getcwd (cwd, 255); uri = g_strdup_printf ("file://%s/%s", cwd, location); } g_object_set (play->priv->playbin, "uri", uri, NULL); g_free (uri); /* open */ if (gst_element_set_state (play->priv->playbin, GST_STATE_PAUSED) != GST_STATE_SUCCESS) { return FALSE; } return TRUE; } /** * gst_play_get_location: * @play: a #GstPlay. * * Get current location of @play. * * Returns: a #char* pointer to current location. */ char * gst_play_get_location (GstPlay * play) { g_return_val_if_fail (play != NULL, NULL); g_return_val_if_fail (GST_IS_PLAY (play), NULL); return g_strdup (play->priv->location); } /** * gst_play_seek_to_time: * @play: a #GstPlay. * @time_nanos: a #gint64 indicating a time position. * * Performs a seek on @play until @time_nanos. */ /* * FIXME: use GstClockTime for 0.9 */ gboolean gst_play_seek_to_time (GstPlay * play, gint64 time_nanos) { return gst_element_seek (play->priv->playbin, GST_SEEK_METHOD_SET | GST_SEEK_FLAG_FLUSH, time_nanos); } /** * gst_play_set_data_src: * @play: a #GstPlay. * @data_src: a #GstElement. * * Set @data_src as the source element of @play. * * Returns: TRUE if call succeeded. */ gboolean gst_play_set_data_src (GstPlay * play, GstElement * data_src) { /* deprecated - use URIs */ return FALSE; } /** * gst_play_set_video_sink: * @play: a #GstPlay. * @video_sink: a #GstElement. * * Set @video_sink as the video sink element of @play. * * Returns: TRUE if call succeeded. */ gboolean gst_play_set_video_sink (GstPlay * play, GstElement * video_sink) { g_object_set (G_OBJECT (play->priv->playbin), "video-sink", video_sink, NULL); return TRUE; } /** * gst_play_set_audio_sink: * @play: a #GstPlay. * @audio_sink: a #GstElement. * * Set @audio_sink as the audio sink element of @play. * * Returns: TRUE if call succeeded. */ gboolean gst_play_set_audio_sink (GstPlay * play, GstElement * audio_sink) { g_object_set (G_OBJECT (play->priv->playbin), "audio-sink", audio_sink, NULL); return TRUE; } /** * gst_play_set_visualization: * @play: a #GstPlay. * @element: a #GstElement. * * Set @video_sink as the video sink element of @play. * * Returns: TRUE if call succeeded. */ gboolean gst_play_set_visualization (GstPlay * play, GstElement * vis_element) { /* unset old */ if (play->priv->vis_element) { gst_object_unref (GST_OBJECT (play->priv->vis_element)); play->priv->vis_element = NULL; } /* set new */ if (vis_element) { gst_object_ref (GST_OBJECT (vis_element)); play->priv->vis_element = vis_element; } /* use */ if (play->priv->vis_element && play->priv->enable_vis) { g_object_set (G_OBJECT (play->priv->playbin), "vis-plugin", vis_element, NULL); } else { g_object_set (G_OBJECT (play->priv->playbin), "vis-plugin", NULL, NULL); } return TRUE; } /** * gst_play_connect_visualization: * @play: a #GstPlay. * @connect: a #gboolean indicating wether or not * visualization should be connected. * * Connect or disconnect visualization bin in @play. * * Returns: TRUE if call succeeded. */ gboolean gst_play_connect_visualization (GstPlay * play, gboolean connect) { play->priv->enable_vis = connect; /* use */ if (play->priv->vis_element && play->priv->enable_vis) { g_object_set (G_OBJECT (play->priv->playbin), "vis-plugin", play->priv->vis_element, NULL); } else { g_object_set (G_OBJECT (play->priv->playbin), "vis-plugin", NULL, NULL); } return TRUE; } /** * gst_play_get_framerate: * @play: a #GstPlay. * * Get the video framerate from @play. * * Returns: a #gdouble indicating video framerate in frame per second. */ gdouble gst_play_get_framerate (GstPlay * play) { const GList *streaminfo = NULL; const GstStructure *str = NULL; gdouble value; g_object_get (G_OBJECT (play->priv->playbin), "stream-info", &streaminfo, NULL); for (; streaminfo != NULL; streaminfo = streaminfo->next) { GObject *info = streaminfo->data; gint type; GParamSpec *pspec; GEnumValue *val; g_object_get (info, "type", &type, NULL); pspec = g_object_class_find_property (G_OBJECT_GET_CLASS (info), "type"); val = g_enum_get_value (G_PARAM_SPEC_ENUM (pspec)->enum_class, type); if (strstr (val->value_name, "VIDEO")) { const GstCaps *caps = NULL; GstPad *pad = NULL; g_object_get (info, "object", &pad, NULL); g_assert (GST_IS_PAD (pad)); pad = (GstPad *) GST_PAD_REALIZE (pad); caps = GST_PAD_CAPS (pad); str = gst_caps_get_structure (caps, 0); break; } } if (!str) return 0.; gst_structure_get_double (str, "framerate", &value); return value; } /** * gst_play_get_sink_element: * @play: a #GstPlay. * @element: a #GstElement. * @sink_type: a #GstPlaySinkType. * * Searches recursively for a sink #GstElement with * type @sink_type in @element which is supposed to be a #GstBin. * * Returns: the sink #GstElement of @element. */ /* * (Ronald) what is this? */ GstElement * gst_play_get_sink_element (GstPlay * play, GstElement * element, GstPlaySinkType sink_type) { GList *elements = NULL; const GList *pads = NULL; gboolean has_src, has_correct_type; g_return_val_if_fail (GST_IS_PLAY (play), NULL); g_return_val_if_fail (GST_IS_ELEMENT (element), NULL); GST_DEBUG_OBJECT (play, "looking for sink element in %s", GST_ELEMENT_NAME (element)); if (!GST_IS_BIN (element)) { /* since its not a bin, we'll assume this * element is a sink element */ GST_DEBUG_OBJECT (play, "not a bin, returning %s as sink element", GST_ELEMENT_NAME (element)); return element; } elements = (GList *) gst_bin_get_list (GST_BIN (element)); /* traverse all elements looking for one without src pad */ while (elements) { element = GST_ELEMENT (elements->data); GST_DEBUG_OBJECT (play, "looking at element %s", GST_ELEMENT_NAME (element)); /* Recursivity :) */ if (GST_IS_BIN (element)) { element = gst_play_get_sink_element (play, element, sink_type); if (GST_IS_ELEMENT (element)) return element; } else { pads = gst_element_get_pad_list (element); has_src = FALSE; has_correct_type = FALSE; while (pads) { /* check for src pad */ if (GST_PAD_DIRECTION (GST_PAD (pads->data)) == GST_PAD_SRC) { GST_DEBUG_OBJECT (play, "element %s has a src pad", GST_ELEMENT_NAME (element)); has_src = TRUE; break; } else { /* If not a src pad checking caps */ GstPad *pad; GstCaps *caps; GstStructure *structure; int i; gboolean has_video_cap = FALSE; gboolean has_audio_cap = FALSE; pad = GST_PAD (pads->data); caps = gst_pad_get_caps (pad); /* loop over all caps members to find mime types */ for (i = 0; i < gst_caps_get_size (caps); ++i) { structure = gst_caps_get_structure (caps, i); GST_DEBUG_OBJECT (play, "looking at caps %d pad %s:%s on element %s with mime %s", i, GST_DEBUG_PAD_NAME (pad), GST_ELEMENT_NAME (element), gst_structure_get_name (structure)); if (strcmp (gst_structure_get_name (structure), "audio/x-raw-int") == 0) { has_audio_cap = TRUE; } if (strcmp (gst_structure_get_name (structure), "video/x-raw-yuv") == 0 || strcmp (gst_structure_get_name (structure), "video/x-raw-rgb") == 0) { has_video_cap = TRUE; } } gst_caps_free (caps); switch (sink_type) { case GST_PLAY_SINK_TYPE_AUDIO: if (has_audio_cap) has_correct_type = TRUE; break; case GST_PLAY_SINK_TYPE_VIDEO: if (has_video_cap) has_correct_type = TRUE; break; case GST_PLAY_SINK_TYPE_ANY: if ((has_video_cap) || (has_audio_cap)) has_correct_type = TRUE; break; default: has_correct_type = FALSE; } } pads = g_list_next (pads); } if ((!has_src) && (has_correct_type)) { GST_DEBUG_OBJECT (play, "found %s with src pad and correct type", GST_ELEMENT_NAME (element)); return element; } } elements = g_list_next (elements); } /* we didn't find a sink element */ return NULL; } /** * gst_play_get_all_by_interface: * @play: a #GstPlay. * @interface: an interface. * * Returns all elements that are used by @play implementing the given interface. * * Returns: a #GList of #GstElement implementing the interface. */ GList * gst_play_get_all_by_interface (GstPlay * play, GType interface_type) { GstElement *videosink = NULL, *audiosink = NULL; GList *res = NULL; g_object_get (G_OBJECT (play->priv->playbin), "video-sink", &videosink, "audio-sink", &audiosink, NULL); /* ehw... */ if (videosink && GST_IS_BIN (videosink)) { res = gst_bin_get_all_by_interface (GST_BIN (videosink), interface_type); } if (!res && audiosink && GST_IS_BIN (audiosink)) { res = gst_bin_get_all_by_interface (GST_BIN (audiosink), interface_type); } return res; } /** * gst_play_new: * @error: a pointer to a #GError, which will be filled in on error. * * Creates a new GstPlay object. * * Returns: a newly created #GstPlay, or NULL on error (the #GError * will be set accordingly). */ GstPlay * gst_play_new (GError ** error) { GstPlay *play = g_object_new (GST_TYPE_PLAY, NULL); if (!play->priv->playbin) { g_set_error (error, 0, 0, _("Failed to create playbin object")); g_object_unref (G_OBJECT (play)); return NULL; } return play; } /* =========================================== */ /* */ /* Object typing & Creation */ /* */ /* =========================================== */ GType gst_play_get_type (void) { static GType play_type = 0; if (!play_type) { static const GTypeInfo play_info = { sizeof (GstPlayClass), NULL, NULL, (GClassInitFunc) gst_play_class_init, NULL, NULL, sizeof (GstPlay), 0, (GInstanceInitFunc) gst_play_init, NULL }; play_type = g_type_register_static (GST_TYPE_PIPELINE, "GstPlay", &play_info, 0); } return play_type; }