/* GStreamer * Copyright (C) <1999> Erik Walthinsen * * 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. */ /*#define DEBUG_ENABLED */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include #include #include #include #ifdef HAVE_LIBOIL #include #endif /* elementfactory information */ static GstElementDetails videotestsrc_details = GST_ELEMENT_DETAILS ("Video test source", "Source/Video", "Creates a test video stream", "David A. Schleef "); /* GstVideotestsrc signals and args */ enum { /* FILL ME */ LAST_SIGNAL }; enum { ARG_0, ARG_TYPE, ARG_SYNC, ARG_NUM_BUFFERS, /* FILL ME */ }; static void gst_videotestsrc_base_init (gpointer g_class); static void gst_videotestsrc_class_init (GstVideotestsrcClass * klass); static void gst_videotestsrc_init (GstVideotestsrc * videotestsrc); static GstElementStateReturn gst_videotestsrc_change_state (GstElement * element); static void gst_videotestsrc_set_clock (GstElement * element, GstClock * clock); static void gst_videotestsrc_set_pattern (GstVideotestsrc * src, int pattern_type); static void gst_videotestsrc_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec); static void gst_videotestsrc_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec); static GstData *gst_videotestsrc_get (GstPad * pad); static const GstQueryType *gst_videotestsrc_get_query_types (GstPad * pad); static gboolean gst_videotestsrc_src_query (GstPad * pad, GstQueryType type, GstFormat * format, gint64 * value); static GstElementClass *parent_class = NULL; static GstCaps *gst_videotestsrc_get_capslist (void); #if 0 static GstCaps *gst_videotestsrc_get_capslist_size (int width, int height, double rate); #endif static GstPadTemplate * gst_videotestsrc_src_template_factory (void) { return gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS, gst_videotestsrc_get_capslist ()); } GType gst_videotestsrc_get_type (void) { static GType videotestsrc_type = 0; if (!videotestsrc_type) { static const GTypeInfo videotestsrc_info = { sizeof (GstVideotestsrcClass), gst_videotestsrc_base_init, NULL, (GClassInitFunc) gst_videotestsrc_class_init, NULL, NULL, sizeof (GstVideotestsrc), 0, (GInstanceInitFunc) gst_videotestsrc_init, }; videotestsrc_type = g_type_register_static (GST_TYPE_ELEMENT, "GstVideotestsrc", &videotestsrc_info, 0); } return videotestsrc_type; } #define GST_TYPE_VIDEOTESTSRC_PATTERN (gst_videotestsrc_pattern_get_type ()) static GType gst_videotestsrc_pattern_get_type (void) { static GType videotestsrc_pattern_type = 0; static GEnumValue pattern_types[] = { {GST_VIDEOTESTSRC_SMPTE, "smpte", "SMPTE 100% color bars"}, {GST_VIDEOTESTSRC_SNOW, "snow", "Random (television snow)"}, {GST_VIDEOTESTSRC_BLACK, "black", "0% Black"}, {0, NULL, NULL}, }; if (!videotestsrc_pattern_type) { videotestsrc_pattern_type = g_enum_register_static ("GstVideotestsrcPattern", pattern_types); } return videotestsrc_pattern_type; } static void gst_videotestsrc_base_init (gpointer g_class) { GstElementClass *element_class = GST_ELEMENT_CLASS (g_class); gst_element_class_set_details (element_class, &videotestsrc_details); gst_element_class_add_pad_template (element_class, gst_videotestsrc_src_template_factory ()); } static void gst_videotestsrc_class_init (GstVideotestsrcClass * klass) { GObjectClass *gobject_class; GstElementClass *gstelement_class; gobject_class = (GObjectClass *) klass; gstelement_class = (GstElementClass *) klass; g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_TYPE, g_param_spec_enum ("pattern", "Pattern", "Type of test pattern to generate", GST_TYPE_VIDEOTESTSRC_PATTERN, 1, G_PARAM_READWRITE)); g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_SYNC, g_param_spec_boolean ("sync", "Sync", "Synchronize to clock", TRUE, G_PARAM_READWRITE)); g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_NUM_BUFFERS, g_param_spec_int ("num-buffers", "num-buffers", "Number of buffers to output before sending EOS", -1, G_MAXINT, 0, G_PARAM_READWRITE)); parent_class = g_type_class_ref (GST_TYPE_ELEMENT); gobject_class->set_property = gst_videotestsrc_set_property; gobject_class->get_property = gst_videotestsrc_get_property; gstelement_class->change_state = gst_videotestsrc_change_state; gstelement_class->set_clock = gst_videotestsrc_set_clock; } static void gst_videotestsrc_set_clock (GstElement * element, GstClock * clock) { GstVideotestsrc *v; v = GST_VIDEOTESTSRC (element); gst_object_replace ((GstObject **) & v->clock, (GstObject *) clock); } static GstCaps * gst_videotestsrc_src_fixate (GstPad * pad, const GstCaps * caps) { GstStructure *structure; GstCaps *newcaps; /* FIXME this function isn't very intelligent in choosing "good" caps */ if (gst_caps_get_size (caps) > 1) return NULL; newcaps = gst_caps_copy (caps); structure = gst_caps_get_structure (newcaps, 0); if (gst_caps_structure_fixate_field_nearest_int (structure, "width", 320)) { return newcaps; } if (gst_caps_structure_fixate_field_nearest_int (structure, "height", 240)) { return newcaps; } if (gst_caps_structure_fixate_field_nearest_double (structure, "framerate", 30.0)) { return newcaps; } /* failed to fixate */ gst_caps_free (newcaps); return NULL; } static GstPadLinkReturn gst_videotestsrc_src_link (GstPad * pad, const GstCaps * caps) { GstVideotestsrc *videotestsrc; const GstStructure *structure; GstPadLinkReturn ret; GST_DEBUG ("gst_videotestsrc_src_link"); videotestsrc = GST_VIDEOTESTSRC (gst_pad_get_parent (pad)); structure = gst_caps_get_structure (caps, 0); videotestsrc->fourcc = paintinfo_find_by_structure (structure); if (!videotestsrc->fourcc) { g_critical ("videotestsrc format not found\n"); return GST_PAD_LINK_REFUSED; } ret = gst_structure_get_int (structure, "width", &videotestsrc->width); ret &= gst_structure_get_int (structure, "height", &videotestsrc->height); ret &= gst_structure_get_double (structure, "framerate", &videotestsrc->rate); if (!ret) return GST_PAD_LINK_REFUSED; videotestsrc->bpp = videotestsrc->fourcc->bitspp; GST_DEBUG ("size %d x %d", videotestsrc->width, videotestsrc->height); return GST_PAD_LINK_OK; } static void gst_videotestsrc_src_unlink (GstPad * pad) { GstVideotestsrc *videotestsrc; videotestsrc = GST_VIDEOTESTSRC (gst_pad_get_parent (pad)); } static GstElementStateReturn gst_videotestsrc_change_state (GstElement * element) { GstVideotestsrc *videotestsrc; videotestsrc = GST_VIDEOTESTSRC (element); switch (GST_STATE_TRANSITION (element)) { case GST_STATE_NULL_TO_READY: break; case GST_STATE_READY_TO_PAUSED: videotestsrc->num_buffers_left = videotestsrc->num_buffers; break; case GST_STATE_PAUSED_TO_PLAYING: break; case GST_STATE_PLAYING_TO_PAUSED: break; case GST_STATE_PAUSED_TO_READY: videotestsrc->timestamp_offset = 0; videotestsrc->n_frames = 0; break; case GST_STATE_READY_TO_NULL: break; } return parent_class->change_state (element); } static GstCaps * gst_videotestsrc_get_capslist (void) { GstCaps *caps; GstStructure *structure; int i; caps = gst_caps_new_empty (); for (i = 0; i < n_fourccs; i++) { structure = paint_get_structure (fourcc_list + i); gst_structure_set (structure, "width", GST_TYPE_INT_RANGE, 1, G_MAXINT, "height", GST_TYPE_INT_RANGE, 1, G_MAXINT, "framerate", GST_TYPE_DOUBLE_RANGE, 0.0, G_MAXDOUBLE, NULL); gst_caps_append_structure (caps, structure); } return caps; } #if 0 static GstCaps * gst_videotestsrc_get_capslist_size (int width, int height, double rate) { GstCaps *caps; GstStructure *structure; int i; caps = gst_caps_new_empty (); for (i = 0; i < n_fourccs; i++) { structure = paint_get_structure (fourcc_list + i); gst_structure_set (structure, "width", G_TYPE_INT, width, "height", G_TYPE_INT, height, "framerate", G_TYPE_INT, rate, NULL); gst_caps_append_structure (caps, structure); } return caps; } #endif static GstCaps * gst_videotestsrc_getcaps (GstPad * pad) { GstVideotestsrc *vts; vts = GST_VIDEOTESTSRC (gst_pad_get_parent (pad)); return gst_videotestsrc_get_capslist (); } static void gst_videotestsrc_init (GstVideotestsrc * videotestsrc) { GST_DEBUG ("gst_videotestsrc_init"); videotestsrc->srcpad = gst_pad_new_from_template (gst_videotestsrc_src_template_factory (), "src"); gst_pad_set_getcaps_function (videotestsrc->srcpad, gst_videotestsrc_getcaps); gst_pad_set_fixate_function (videotestsrc->srcpad, gst_videotestsrc_src_fixate); gst_element_add_pad (GST_ELEMENT (videotestsrc), videotestsrc->srcpad); gst_pad_set_get_function (videotestsrc->srcpad, gst_videotestsrc_get); gst_pad_set_link_function (videotestsrc->srcpad, gst_videotestsrc_src_link); gst_pad_set_unlink_function (videotestsrc->srcpad, gst_videotestsrc_src_unlink); gst_pad_set_query_function (videotestsrc->srcpad, gst_videotestsrc_src_query); gst_pad_set_query_type_function (videotestsrc->srcpad, gst_videotestsrc_get_query_types); gst_videotestsrc_set_pattern (videotestsrc, GST_VIDEOTESTSRC_SMPTE); videotestsrc->num_buffers = -1; videotestsrc->num_buffers_left = -1; videotestsrc->sync = TRUE; } static const GstQueryType * gst_videotestsrc_get_query_types (GstPad * pad) { static const GstQueryType query_types[] = { GST_QUERY_POSITION, 0, }; return query_types; } static gboolean gst_videotestsrc_src_query (GstPad * pad, GstQueryType type, GstFormat * format, gint64 * value) { gboolean res = FALSE; GstVideotestsrc *videotestsrc = GST_VIDEOTESTSRC (gst_pad_get_parent (pad)); switch (type) { case GST_QUERY_POSITION: switch (*format) { case GST_FORMAT_TIME: *value = videotestsrc->n_frames * GST_SECOND / (double) videotestsrc->rate; res = TRUE; break; case GST_FORMAT_DEFAULT: /* frames */ *value = videotestsrc->n_frames; res = TRUE; break; default: break; } break; default: break; } return res; } static GstData * gst_videotestsrc_get (GstPad * pad) { GstVideotestsrc *videotestsrc; gulong newsize; GstBuffer *buf; GST_DEBUG ("gst_videotestsrc_get"); g_return_val_if_fail (pad != NULL, NULL); g_return_val_if_fail (GST_IS_PAD (pad), NULL); videotestsrc = GST_VIDEOTESTSRC (gst_pad_get_parent (pad)); if (videotestsrc->fourcc == NULL) { GST_ELEMENT_ERROR (videotestsrc, CORE, NEGOTIATION, (NULL), ("format wasn't negotiated before get function")); return NULL; } newsize = gst_videotestsrc_get_size (videotestsrc, videotestsrc->width, videotestsrc->height); g_return_val_if_fail (newsize > 0, NULL); GST_DEBUG ("size=%ld %dx%d", newsize, videotestsrc->width, videotestsrc->height); buf = gst_pad_alloc_buffer (pad, GST_BUFFER_OFFSET_NONE, newsize); g_return_val_if_fail (GST_BUFFER_DATA (buf) != NULL, NULL); videotestsrc->make_image (videotestsrc, (void *) GST_BUFFER_DATA (buf), videotestsrc->width, videotestsrc->height); if (videotestsrc->sync) { GST_BUFFER_TIMESTAMP (buf) = videotestsrc->timestamp_offset + (videotestsrc->n_frames * GST_SECOND) / (double) videotestsrc->rate; videotestsrc->n_frames++; /* FIXME this is not correct if we do QoS */ if (videotestsrc->clock) { gst_element_wait (GST_ELEMENT (videotestsrc), GST_BUFFER_TIMESTAMP (buf)); } } else { GST_BUFFER_TIMESTAMP (buf) = videotestsrc->timestamp_offset + (videotestsrc->n_frames * GST_SECOND) / (double) videotestsrc->rate; videotestsrc->n_frames++; } GST_BUFFER_DURATION (buf) = GST_SECOND / (double) videotestsrc->rate; if (videotestsrc->num_buffers_left == 0) { gst_element_set_eos (GST_ELEMENT (videotestsrc)); return GST_DATA (gst_event_new (GST_EVENT_EOS)); } else { if (videotestsrc->num_buffers_left > 0) videotestsrc->num_buffers_left--; } return GST_DATA (buf); } static void gst_videotestsrc_set_pattern (GstVideotestsrc * src, int pattern_type) { src->type = pattern_type; GST_DEBUG ("setting pattern to %d\n", pattern_type); switch (pattern_type) { case GST_VIDEOTESTSRC_SMPTE: src->make_image = gst_videotestsrc_smpte; break; case GST_VIDEOTESTSRC_SNOW: src->make_image = gst_videotestsrc_snow; break; case GST_VIDEOTESTSRC_BLACK: src->make_image = gst_videotestsrc_black; break; default: g_assert_not_reached (); } } static void gst_videotestsrc_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec) { GstVideotestsrc *src; /* it's not null if we got it, but it might not be ours */ g_return_if_fail (GST_IS_VIDEOTESTSRC (object)); src = GST_VIDEOTESTSRC (object); GST_DEBUG ("gst_videotestsrc_set_property"); switch (prop_id) { case ARG_TYPE: gst_videotestsrc_set_pattern (src, g_value_get_enum (value)); break; case ARG_SYNC: src->sync = g_value_get_boolean (value); break; case ARG_NUM_BUFFERS: src->num_buffers = g_value_get_int (value); break; default: break; } } static void gst_videotestsrc_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec) { GstVideotestsrc *src; /* it's not null if we got it, but it might not be ours */ g_return_if_fail (GST_IS_VIDEOTESTSRC (object)); src = GST_VIDEOTESTSRC (object); switch (prop_id) { case ARG_TYPE: g_value_set_enum (value, src->type); break; case ARG_SYNC: g_value_set_boolean (value, src->sync); break; case ARG_NUM_BUFFERS: g_value_set_int (value, src->num_buffers); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static gboolean plugin_init (GstPlugin * plugin) { #ifdef HAVE_LIBOIL oil_init (); #endif return gst_element_register (plugin, "videotestsrc", GST_RANK_NONE, GST_TYPE_VIDEOTESTSRC); } GST_PLUGIN_DEFINE (GST_VERSION_MAJOR, GST_VERSION_MINOR, "videotestsrc", "Creates a test video stream", plugin_init, VERSION, GST_LICENSE, GST_PACKAGE, GST_ORIGIN)