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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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goom: port goom
This commit is contained in:
Wim Taymans
parent
710fa239d5
commit
9290baba06
2 changed files with 114 additions and 107 deletions
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@ -1,6 +1,7 @@
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/* gstgoom.c: implementation of goom drawing element
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* Copyright (C) <2001> Richard Boulton <richard@tartarus.org>
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* (C) <2006> Wim Taymans <wim at fluendo dot com>
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* (C) <2011> Wim Taymans <wim.taymans at gmail dot com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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@ -86,9 +87,6 @@ static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
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);
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static void gst_goom_class_init (GstGoomClass * klass);
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static void gst_goom_base_init (GstGoomClass * klass);
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static void gst_goom_init (GstGoom * goom);
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static void gst_goom_finalize (GObject * object);
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static GstStateChangeReturn gst_goom_change_state (GstElement * element,
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@ -100,48 +98,8 @@ static gboolean gst_goom_sink_event (GstPad * pad, GstEvent * event);
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static gboolean gst_goom_src_query (GstPad * pad, GstQuery * query);
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static gboolean gst_goom_sink_setcaps (GstPad * pad, GstCaps * caps);
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static gboolean gst_goom_src_setcaps (GstPad * pad, GstCaps * caps);
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static GstElementClass *parent_class = NULL;
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GType
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gst_goom_get_type (void)
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{
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static GType type = 0;
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if (!type) {
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static const GTypeInfo info = {
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sizeof (GstGoomClass),
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(GBaseInitFunc) gst_goom_base_init,
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NULL,
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(GClassInitFunc) gst_goom_class_init,
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NULL,
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NULL,
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sizeof (GstGoom),
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0,
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(GInstanceInitFunc) gst_goom_init,
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};
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type = g_type_register_static (GST_TYPE_ELEMENT, "GstGoom", &info, 0);
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}
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return type;
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}
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static void
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gst_goom_base_init (GstGoomClass * klass)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
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gst_element_class_set_details_simple (element_class, "GOOM: what a GOOM!",
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"Visualization",
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"Takes frames of data and outputs video frames using the GOOM filter",
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"Wim Taymans <wim@fluendo.com>");
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&sink_template));
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&src_template));
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}
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#define gst_goom_parent_class parent_class
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G_DEFINE_TYPE (GstGoom, gst_goom, GST_TYPE_ELEMENT);
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static void
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gst_goom_class_init (GstGoomClass * klass)
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@ -152,10 +110,17 @@ gst_goom_class_init (GstGoomClass * klass)
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gobject_class = (GObjectClass *) klass;
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gstelement_class = (GstElementClass *) klass;
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parent_class = g_type_class_peek_parent (klass);
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gobject_class->finalize = gst_goom_finalize;
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gst_element_class_set_details_simple (gstelement_class, "GOOM: what a GOOM!",
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"Visualization",
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"Takes frames of data and outputs video frames using the GOOM filter",
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"Wim Taymans <wim@fluendo.com>");
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gst_element_class_add_pad_template (gstelement_class,
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gst_static_pad_template_get (&sink_template));
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gst_element_class_add_pad_template (gstelement_class,
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gst_static_pad_template_get (&src_template));
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gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_goom_change_state);
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}
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@ -168,13 +133,9 @@ gst_goom_init (GstGoom * goom)
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GST_DEBUG_FUNCPTR (gst_goom_chain));
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gst_pad_set_event_function (goom->sinkpad,
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GST_DEBUG_FUNCPTR (gst_goom_sink_event));
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gst_pad_set_setcaps_function (goom->sinkpad,
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GST_DEBUG_FUNCPTR (gst_goom_sink_setcaps));
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gst_element_add_pad (GST_ELEMENT (goom), goom->sinkpad);
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goom->srcpad = gst_pad_new_from_static_template (&src_template, "src");
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gst_pad_set_setcaps_function (goom->srcpad,
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GST_DEBUG_FUNCPTR (gst_goom_src_setcaps));
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gst_pad_set_event_function (goom->srcpad,
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GST_DEBUG_FUNCPTR (gst_goom_src_event));
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gst_pad_set_query_function (goom->srcpad,
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@ -203,6 +164,8 @@ gst_goom_finalize (GObject * object)
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goom->plugin = NULL;
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g_object_unref (goom->adapter);
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if (goom->pool)
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gst_object_unref (goom->pool);
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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@ -220,14 +183,11 @@ gst_goom_reset (GstGoom * goom)
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}
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static gboolean
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gst_goom_sink_setcaps (GstPad * pad, GstCaps * caps)
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gst_goom_sink_setcaps (GstGoom * goom, GstCaps * caps)
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{
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GstGoom *goom;
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GstStructure *structure;
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gboolean res;
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goom = GST_GOOM (GST_PAD_PARENT (pad));
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structure = gst_caps_get_structure (caps, 0);
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res = gst_structure_get_int (structure, "channels", &goom->channels);
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@ -235,24 +195,21 @@ gst_goom_sink_setcaps (GstPad * pad, GstCaps * caps)
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goom->bps = goom->channels * sizeof (gint16);
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return res;
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return TRUE;
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}
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static gboolean
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gst_goom_src_setcaps (GstPad * pad, GstCaps * caps)
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gst_goom_src_setcaps (GstGoom * goom, GstCaps * caps)
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{
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GstGoom *goom;
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GstStructure *structure;
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goom = GST_GOOM (GST_PAD_PARENT (pad));
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gboolean res;
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structure = gst_caps_get_structure (caps, 0);
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if (!gst_structure_get_int (structure, "width", &goom->width) ||
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!gst_structure_get_int (structure, "height", &goom->height) ||
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!gst_structure_get_fraction (structure, "framerate", &goom->fps_n,
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&goom->fps_d))
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return FALSE;
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goto error;
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goom_set_resolution (goom->plugin, goom->width, goom->height);
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@ -266,32 +223,46 @@ gst_goom_src_setcaps (GstPad * pad, GstCaps * caps)
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GST_DEBUG_OBJECT (goom, "dimension %dx%d, framerate %d/%d, spf %d",
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goom->width, goom->height, goom->fps_n, goom->fps_d, goom->spf);
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return TRUE;
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res = gst_pad_push_event (goom->srcpad, gst_event_new_caps (caps));
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return res;
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/* ERRORS */
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error:
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{
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GST_DEBUG_OBJECT (goom, "error parsing caps");
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return FALSE;
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}
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}
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static gboolean
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gst_goom_src_negotiate (GstGoom * goom)
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{
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gboolean res;
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GstCaps *othercaps, *target;
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GstStructure *structure;
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const GstCaps *templ;
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GstCaps *templ;
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GstQuery *query;
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GstBufferPool *pool = NULL;
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guint size, min, max, prefix, alignment;
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templ = gst_pad_get_pad_template_caps (goom->srcpad);
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GST_DEBUG_OBJECT (goom, "performing negotiation");
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/* see what the peer can do */
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othercaps = gst_pad_peer_get_caps (goom->srcpad);
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othercaps = gst_pad_peer_get_caps (goom->srcpad, NULL);
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if (othercaps) {
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target = gst_caps_intersect (othercaps, templ);
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gst_caps_unref (othercaps);
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gst_caps_unref (templ);
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if (gst_caps_is_empty (target))
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goto no_format;
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gst_caps_truncate (target);
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} else {
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target = gst_caps_ref ((GstCaps *) templ);
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target = templ;
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}
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structure = gst_caps_get_structure (target, 0);
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@ -300,7 +271,42 @@ gst_goom_src_negotiate (GstGoom * goom)
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gst_structure_fixate_field_nearest_fraction (structure, "framerate",
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DEFAULT_FPS_N, DEFAULT_FPS_D);
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gst_pad_set_caps (goom->srcpad, target);
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res = gst_goom_src_setcaps (goom, target);
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/* try to get a bufferpool now */
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/* find a pool for the negotiated caps now */
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query = gst_query_new_allocation (target, TRUE);
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if (gst_pad_peer_query (goom->srcpad, query)) {
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/* we got configuration from our peer, parse them */
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gst_query_parse_allocation_params (query, &size, &min, &max, &prefix,
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&alignment, &pool);
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} else {
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size = goom->outsize;
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min = max = 0;
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prefix = 0;
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alignment = 1;
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}
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if (pool == NULL) {
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GstStructure *config;
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/* we did not get a pool, make one ourselves then */
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pool = gst_buffer_pool_new ();
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config = gst_buffer_pool_get_config (pool);
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gst_buffer_pool_config_set (config, target, size, min, max, prefix, 0,
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alignment);
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gst_buffer_pool_set_config (pool, config);
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}
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if (goom->pool)
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gst_object_unref (goom->pool);
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goom->pool = pool;
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/* and activate */
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gst_buffer_pool_set_active (pool, TRUE);
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gst_caps_unref (target);
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return TRUE;
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@ -327,7 +333,7 @@ gst_goom_src_event (GstPad * pad, GstEvent * event)
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GstClockTimeDiff diff;
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GstClockTime timestamp;
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gst_event_parse_qos (event, &proportion, &diff, ×tamp);
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gst_event_parse_qos (event, NULL, &proportion, &diff, ×tamp);
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/* save stuff for the _chain() function */
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GST_OBJECT_LOCK (goom);
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@ -361,6 +367,14 @@ gst_goom_sink_event (GstPad * pad, GstEvent * event)
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goom = GST_GOOM (gst_pad_get_parent (pad));
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switch (GST_EVENT_TYPE (event)) {
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case GST_EVENT_CAPS:
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{
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GstCaps *caps;
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gst_event_parse_caps (event, &caps);
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res = gst_goom_sink_setcaps (goom, caps);
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break;
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}
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case GST_EVENT_FLUSH_START:
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res = gst_pad_push_event (goom->srcpad, event);
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break;
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@ -368,22 +382,12 @@ gst_goom_sink_event (GstPad * pad, GstEvent * event)
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gst_goom_reset (goom);
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res = gst_pad_push_event (goom->srcpad, event);
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break;
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case GST_EVENT_NEWSEGMENT:
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case GST_EVENT_SEGMENT:
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{
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GstFormat format;
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gdouble rate, arate;
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gint64 start, stop, time;
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gboolean update;
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/* the newsegment values are used to clip the input samples
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* and to convert the incomming timestamps to running time so
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* we can do QoS */
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gst_event_parse_new_segment_full (event, &update, &rate, &arate, &format,
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&start, &stop, &time);
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/* now configure the values */
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gst_segment_set_newsegment_full (&goom->segment, update,
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rate, arate, format, start, stop, time);
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gst_event_copy_segment (event, &goom->segment);
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res = gst_pad_push_event (goom->srcpad, event);
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break;
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@ -454,29 +458,26 @@ gst_goom_src_query (GstPad * pad, GstQuery * query)
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return res;
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}
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/* make sure we are negotiated */
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static GstFlowReturn
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get_buffer (GstGoom * goom, GstBuffer ** outbuf)
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ensure_negotiated (GstGoom * goom)
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{
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GstFlowReturn ret;
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gboolean reconfigure;
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if (GST_PAD_CAPS (goom->srcpad) == NULL) {
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GST_OBJECT_LOCK (goom->srcpad);
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reconfigure = GST_PAD_NEEDS_RECONFIGURE (goom->srcpad);
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GST_OBJECT_FLAG_UNSET (goom->srcpad, GST_PAD_NEED_RECONFIGURE);
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GST_OBJECT_UNLOCK (goom->srcpad);
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/* we don't know an output format yet, pick one */
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if (reconfigure || !gst_pad_has_current_caps (goom->srcpad)) {
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if (!gst_goom_src_negotiate (goom))
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return GST_FLOW_NOT_NEGOTIATED;
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}
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GST_DEBUG_OBJECT (goom, "allocating output buffer with caps %"
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GST_PTR_FORMAT, GST_PAD_CAPS (goom->srcpad));
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ret =
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gst_pad_alloc_buffer_and_set_caps (goom->srcpad,
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GST_BUFFER_OFFSET_NONE, goom->outsize,
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GST_PAD_CAPS (goom->srcpad), outbuf);
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if (ret != GST_FLOW_OK)
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return ret;
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return GST_FLOW_OK;
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}
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static GstFlowReturn
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gst_goom_chain (GstPad * pad, GstBuffer * buffer)
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{
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@ -490,15 +491,12 @@ gst_goom_chain (GstPad * pad, GstBuffer * buffer)
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goto beach;
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}
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/* If we don't have an output format yet, preallocate a buffer to try and
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* set one */
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if (GST_PAD_CAPS (goom->srcpad) == NULL) {
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ret = get_buffer (goom, &outbuf);
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/* Make sure have an output format */
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ret = ensure_negotiated (goom);
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if (ret != GST_FLOW_OK) {
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gst_buffer_unref (buffer);
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goto beach;
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}
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}
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/* don't try to combine samples from discont buffer */
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if (GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DISCONT)) {
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@ -507,7 +505,7 @@ gst_goom_chain (GstPad * pad, GstBuffer * buffer)
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GST_DEBUG_OBJECT (goom,
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"Input buffer has %d samples, time=%" G_GUINT64_FORMAT,
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GST_BUFFER_SIZE (buffer) / goom->bps, GST_BUFFER_TIMESTAMP (buffer));
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gst_buffer_get_size (buffer) / goom->bps, GST_BUFFER_TIMESTAMP (buffer));
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/* Collect samples until we have enough for an output frame */
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gst_adapter_push (goom->adapter, buffer);
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@ -565,7 +563,7 @@ gst_goom_chain (GstPad * pad, GstBuffer * buffer)
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/* get next GOOM_SAMPLES, we have at least this amount of samples */
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data =
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(const guint16 *) gst_adapter_peek (goom->adapter,
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(const guint16 *) gst_adapter_map (goom->adapter,
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GOOM_SAMPLES * goom->bps);
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if (goom->channels == 2) {
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@ -583,18 +581,21 @@ gst_goom_chain (GstPad * pad, GstBuffer * buffer)
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/* alloc a buffer if we don't have one yet, this happens
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* when we pushed a buffer in this while loop before */
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if (outbuf == NULL) {
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ret = get_buffer (goom, &outbuf);
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GST_DEBUG_OBJECT (goom, "allocating output buffer");
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ret = gst_buffer_pool_acquire_buffer (goom->pool, &outbuf, NULL);
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if (ret != GST_FLOW_OK) {
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gst_adapter_unmap (goom->adapter, 0);
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goto beach;
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}
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}
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GST_BUFFER_TIMESTAMP (outbuf) = timestamp;
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GST_BUFFER_DURATION (outbuf) = goom->duration;
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GST_BUFFER_SIZE (outbuf) = goom->outsize;
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out_frame = (guchar *) goom_update (goom->plugin, goom->datain, 0, 0);
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memcpy (GST_BUFFER_DATA (outbuf), out_frame, goom->outsize);
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gst_buffer_fill (outbuf, 0, out_frame, goom->outsize);
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gst_adapter_unmap (goom->adapter, 0);
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GST_DEBUG ("Pushing frame with time=%" GST_TIME_FORMAT ", duration=%"
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GST_TIME_FORMAT, GST_TIME_ARGS (timestamp),
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@ -645,6 +646,11 @@ gst_goom_change_state (GstElement * element, GstStateChange transition)
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switch (transition) {
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case GST_STATE_CHANGE_PAUSED_TO_READY:
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if (goom->pool) {
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gst_buffer_pool_set_active (goom->pool, FALSE);
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gst_object_unref (goom->pool);
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goom->pool = NULL;
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}
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break;
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case GST_STATE_CHANGE_READY_TO_NULL:
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break;
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@ -57,6 +57,7 @@ struct _GstGoom
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gint height;
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||||
GstClockTime duration;
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guint outsize;
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||||
GstBufferPool *pool;
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||||
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/* samples per frame */
|
||||
guint spf;
|
||||
|
|
|
|||
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Reference in a new issue