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117686abc5
We can remove the next_ts variable as we don't use it anymore.
960 lines
26 KiB
C
960 lines
26 KiB
C
/* GStreamer
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* Copyright (C) 2004 Benjamin Otte <otte@gnome.org>
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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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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <gst/gst.h>
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#include <gst/base/gstadapter.h>
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#include <gst/video/video.h>
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#include <gst/audio/audio.h>
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#include <libvisual/libvisual.h>
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#define GST_TYPE_VISUAL (gst_visual_get_type())
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#define GST_IS_VISUAL(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_VISUAL))
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#define GST_VISUAL(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_VISUAL,GstVisual))
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#define GST_IS_VISUAL_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_VISUAL))
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#define GST_VISUAL_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_VISUAL,GstVisualClass))
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#define GST_VISUAL_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_VISUAL, GstVisualClass))
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typedef struct _GstVisual GstVisual;
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typedef struct _GstVisualClass GstVisualClass;
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GST_DEBUG_CATEGORY_STATIC (libvisual_debug);
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#define GST_CAT_DEFAULT (libvisual_debug)
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struct _GstVisual
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{
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GstElement element;
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/* pads */
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GstPad *sinkpad;
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GstPad *srcpad;
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GstSegment segment;
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/* libvisual stuff */
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VisAudio *audio;
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VisVideo *video;
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VisActor *actor;
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/* audio/video state */
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gint channels;
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gint rate; /* Input samplerate */
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gint bps;
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/* framerate numerator & denominator */
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gint fps_n;
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gint fps_d;
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gint width;
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gint height;
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GstClockTime duration;
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guint outsize;
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/* samples per frame based on caps */
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guint spf;
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/* state stuff */
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GstAdapter *adapter;
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guint count;
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/* QoS stuff *//* with LOCK */
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gdouble proportion;
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GstClockTime earliest_time;
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};
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struct _GstVisualClass
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{
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GstElementClass parent_class;
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VisPluginRef *plugin;
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};
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GType gst_visual_get_type (void);
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static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS (GST_VIDEO_CAPS_xRGB_HOST_ENDIAN "; "
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#if G_BYTE_ORDER == G_BIG_ENDIAN
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GST_VIDEO_CAPS_RGB "; "
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#else
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GST_VIDEO_CAPS_BGR "; "
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#endif
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GST_VIDEO_CAPS_RGB_16)
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);
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static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS ("audio/x-raw-int, "
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"width = (int) 16, "
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"depth = (int) 16, "
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"endianness = (int) BYTE_ORDER, "
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"signed = (boolean) TRUE, " "channels = (int) { 1, 2 }, "
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#if defined(VISUAL_API_VERSION) && VISUAL_API_VERSION >= 4000 && VISUAL_API_VERSION < 5000
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"rate = (int) { 8000, 11250, 22500, 32000, 44100, 48000, 96000 }"
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#else
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"rate = (int) [ 1000, MAX ]"
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#endif
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)
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);
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static void gst_visual_class_init (gpointer g_class, gpointer class_data);
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static void gst_visual_init (GstVisual * visual);
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static void gst_visual_dispose (GObject * object);
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static GstStateChangeReturn gst_visual_change_state (GstElement * element,
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GstStateChange transition);
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static GstFlowReturn gst_visual_chain (GstPad * pad, GstBuffer * buffer);
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static gboolean gst_visual_sink_event (GstPad * pad, GstEvent * event);
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static gboolean gst_visual_src_event (GstPad * pad, GstEvent * event);
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static gboolean gst_visual_sink_setcaps (GstPad * pad, GstCaps * caps);
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static gboolean gst_visual_src_setcaps (GstPad * pad, GstCaps * caps);
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static GstCaps *gst_visual_getcaps (GstPad * pad);
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static void libvisual_log_handler (const char *message, const char *funcname,
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void *priv);
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static GstElementClass *parent_class = NULL;
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GType
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gst_visual_get_type (void)
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{
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static GType type = 0;
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if (G_UNLIKELY (type == 0)) {
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static const GTypeInfo info = {
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sizeof (GstVisualClass),
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NULL,
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NULL,
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gst_visual_class_init,
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NULL,
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NULL,
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sizeof (GstVisual),
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0,
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(GInstanceInitFunc) gst_visual_init,
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};
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type = g_type_register_static (GST_TYPE_ELEMENT, "GstVisual", &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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libvisual_log_handler (const char *message, const char *funcname, void *priv)
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{
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GST_CAT_LEVEL_LOG (libvisual_debug, (GstDebugLevel) (priv), NULL, "%s - %s",
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funcname, message);
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}
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static void
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gst_visual_class_init (gpointer g_class, gpointer class_data)
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{
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GstVisualClass *klass = GST_VISUAL_CLASS (g_class);
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GstElementClass *element = GST_ELEMENT_CLASS (g_class);
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GObjectClass *object = G_OBJECT_CLASS (g_class);
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klass->plugin = class_data;
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element->change_state = gst_visual_change_state;
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if (class_data == NULL) {
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parent_class = g_type_class_peek_parent (g_class);
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} else {
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GstElementDetails details = {
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NULL,
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"Visualization",
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klass->plugin->info->about,
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"Benjamin Otte <otte@gnome.org>"
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};
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details.longname = g_strdup_printf ("libvisual %s plugin v.%s",
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klass->plugin->info->name, klass->plugin->info->version);
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/* FIXME: improve to only register what plugin supports? */
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gst_element_class_add_pad_template (element,
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gst_static_pad_template_get (&src_template));
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gst_element_class_add_pad_template (element,
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gst_static_pad_template_get (&sink_template));
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gst_element_class_set_details (element, &details);
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g_free (details.longname);
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}
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object->dispose = gst_visual_dispose;
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}
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static void
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gst_visual_init (GstVisual * visual)
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{
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/* create the sink and src pads */
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visual->sinkpad = gst_pad_new_from_static_template (&sink_template, "sink");
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gst_pad_set_setcaps_function (visual->sinkpad, gst_visual_sink_setcaps);
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gst_pad_set_chain_function (visual->sinkpad, gst_visual_chain);
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gst_pad_set_event_function (visual->sinkpad, gst_visual_sink_event);
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gst_element_add_pad (GST_ELEMENT (visual), visual->sinkpad);
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visual->srcpad = gst_pad_new_from_static_template (&src_template, "src");
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gst_pad_set_setcaps_function (visual->srcpad, gst_visual_src_setcaps);
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gst_pad_set_getcaps_function (visual->srcpad, gst_visual_getcaps);
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gst_pad_set_event_function (visual->srcpad, gst_visual_src_event);
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gst_element_add_pad (GST_ELEMENT (visual), visual->srcpad);
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visual->adapter = gst_adapter_new ();
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}
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static void
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gst_visual_clear_actors (GstVisual * visual)
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{
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if (visual->actor) {
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visual_object_unref (VISUAL_OBJECT (visual->actor));
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visual->actor = NULL;
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}
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if (visual->video) {
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visual_object_unref (VISUAL_OBJECT (visual->video));
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visual->video = NULL;
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}
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if (visual->audio) {
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visual_object_unref (VISUAL_OBJECT (visual->audio));
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visual->audio = NULL;
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}
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}
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static void
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gst_visual_dispose (GObject * object)
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{
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GstVisual *visual = GST_VISUAL (object);
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if (visual->adapter) {
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g_object_unref (visual->adapter);
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visual->adapter = NULL;
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}
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gst_visual_clear_actors (visual);
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GST_CALL_PARENT (G_OBJECT_CLASS, dispose, (object));
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}
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static void
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gst_visual_reset (GstVisual * visual)
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{
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gst_adapter_clear (visual->adapter);
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gst_segment_init (&visual->segment, GST_FORMAT_UNDEFINED);
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GST_OBJECT_LOCK (visual);
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visual->proportion = 1.0;
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visual->earliest_time = -1;
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GST_OBJECT_UNLOCK (visual);
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}
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static GstCaps *
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gst_visual_getcaps (GstPad * pad)
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{
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GstCaps *ret;
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GstVisual *visual = GST_VISUAL (gst_pad_get_parent (pad));
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int depths;
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if (!visual->actor) {
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ret = gst_caps_copy (gst_pad_get_pad_template_caps (visual->srcpad));
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goto beach;
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}
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ret = gst_caps_new_empty ();
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depths = visual_actor_get_supported_depth (visual->actor);
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if (depths < 0) {
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/* FIXME: set an error */
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goto beach;
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}
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if (depths == VISUAL_VIDEO_DEPTH_GL) {
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/* We can't handle GL only plugins */
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goto beach;
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}
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GST_DEBUG_OBJECT (visual, "libvisual plugin supports depths %u (0x%04x)",
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depths, depths);
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/* if (depths & VISUAL_VIDEO_DEPTH_32BIT) Always supports 32bit output */
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gst_caps_append (ret, gst_caps_from_string (GST_VIDEO_CAPS_xRGB_HOST_ENDIAN));
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if (depths & VISUAL_VIDEO_DEPTH_24BIT) {
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#if G_BYTE_ORDER == G_BIG_ENDIAN
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gst_caps_append (ret, gst_caps_from_string (GST_VIDEO_CAPS_RGB));
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#else
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gst_caps_append (ret, gst_caps_from_string (GST_VIDEO_CAPS_BGR));
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#endif
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}
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if (depths & VISUAL_VIDEO_DEPTH_16BIT) {
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gst_caps_append (ret, gst_caps_from_string (GST_VIDEO_CAPS_RGB_16));
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}
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beach:
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GST_DEBUG_OBJECT (visual, "returning caps %" GST_PTR_FORMAT, ret);
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gst_object_unref (visual);
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return ret;
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}
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static gboolean
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gst_visual_src_setcaps (GstPad * pad, GstCaps * caps)
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{
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GstVisual *visual = GST_VISUAL (gst_pad_get_parent (pad));
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GstStructure *structure;
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gint depth, pitch;
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structure = gst_caps_get_structure (caps, 0);
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GST_DEBUG_OBJECT (visual, "src pad got caps %" GST_PTR_FORMAT, caps);
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if (!gst_structure_get_int (structure, "width", &visual->width))
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goto error;
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if (!gst_structure_get_int (structure, "height", &visual->height))
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goto error;
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if (!gst_structure_get_int (structure, "bpp", &depth))
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goto error;
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if (!gst_structure_get_fraction (structure, "framerate", &visual->fps_n,
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&visual->fps_d))
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goto error;
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visual_video_set_depth (visual->video,
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visual_video_depth_enum_from_value (depth));
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visual_video_set_dimension (visual->video, visual->width, visual->height);
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pitch = GST_ROUND_UP_4 (visual->width * visual->video->bpp);
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visual_video_set_pitch (visual->video, pitch);
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visual_actor_video_negotiate (visual->actor, 0, FALSE, FALSE);
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/* precalc some values */
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visual->outsize = visual->video->height * pitch;
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visual->spf =
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gst_util_uint64_scale_int (visual->rate, visual->fps_d, visual->fps_n);
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visual->duration =
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gst_util_uint64_scale_int (GST_SECOND, visual->fps_d, visual->fps_n);
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gst_object_unref (visual);
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return TRUE;
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/* ERRORS */
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error:
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{
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GST_DEBUG_OBJECT (visual, "error parsing caps");
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gst_object_unref (visual);
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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_visual_sink_setcaps (GstPad * pad, GstCaps * caps)
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{
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GstVisual *visual = GST_VISUAL (gst_pad_get_parent (pad));
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GstStructure *structure;
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structure = gst_caps_get_structure (caps, 0);
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gst_structure_get_int (structure, "channels", &visual->channels);
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gst_structure_get_int (structure, "rate", &visual->rate);
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/* this is how many samples we need to fill one frame at the requested
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* framerate. */
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if (visual->fps_n != 0) {
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visual->spf =
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gst_util_uint64_scale_int (visual->rate, visual->fps_d, visual->fps_n);
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}
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visual->bps = visual->channels * sizeof (gint16);
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gst_object_unref (visual);
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return TRUE;
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}
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static gboolean
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gst_vis_src_negotiate (GstVisual * visual)
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{
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GstCaps *othercaps, *target, *intersect;
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GstStructure *structure;
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GstCaps *caps;
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caps = gst_pad_get_caps (visual->srcpad);
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/* see what the peer can do */
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othercaps = gst_pad_peer_get_caps (visual->srcpad);
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if (othercaps) {
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intersect = gst_caps_intersect (othercaps, caps);
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gst_caps_unref (othercaps);
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gst_caps_unref (caps);
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if (gst_caps_is_empty (intersect))
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goto no_format;
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target = gst_caps_copy_nth (intersect, 0);
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gst_caps_unref (intersect);
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} else {
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/* need a copy, we'll be modifying it when fixating */
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target = gst_caps_copy (caps);
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gst_caps_unref (caps);
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}
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/* fixate in case something is not fixed. This does nothing if the value is
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* already fixed. For video we always try to fixate to something like
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* 320x240x30 by convention. */
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structure = gst_caps_get_structure (target, 0);
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gst_structure_fixate_field_nearest_int (structure, "width", 320);
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gst_structure_fixate_field_nearest_int (structure, "height", 240);
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gst_structure_fixate_field_nearest_fraction (structure, "framerate", 30, 1);
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gst_pad_set_caps (visual->srcpad, target);
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gst_caps_unref (target);
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return TRUE;
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/* ERRORS */
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no_format:
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{
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GST_ELEMENT_ERROR (visual, STREAM, FORMAT, (NULL),
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("could not negotiate output format"));
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gst_caps_unref (intersect);
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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_visual_sink_event (GstPad * pad, GstEvent * event)
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{
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GstVisual *visual;
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gboolean res;
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visual = GST_VISUAL (gst_pad_get_parent (pad));
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switch (GST_EVENT_TYPE (event)) {
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case GST_EVENT_FLUSH_START:
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res = gst_pad_push_event (visual->srcpad, event);
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break;
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case GST_EVENT_FLUSH_STOP:
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/* reset QoS and adapter. */
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gst_visual_reset (visual);
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res = gst_pad_push_event (visual->srcpad, event);
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break;
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case GST_EVENT_NEWSEGMENT:
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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 (&visual->segment, update,
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rate, arate, format, start, stop, time);
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/* and forward */
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res = gst_pad_push_event (visual->srcpad, event);
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break;
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}
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default:
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res = gst_pad_push_event (visual->srcpad, event);
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break;
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}
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gst_object_unref (visual);
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return res;
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}
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static gboolean
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gst_visual_src_event (GstPad * pad, GstEvent * event)
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{
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GstVisual *visual;
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gboolean res;
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visual = GST_VISUAL (gst_pad_get_parent (pad));
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switch (GST_EVENT_TYPE (event)) {
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case GST_EVENT_QOS:
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{
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gdouble proportion;
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GstClockTimeDiff diff;
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GstClockTime timestamp;
|
|
|
|
gst_event_parse_qos (event, &proportion, &diff, ×tamp);
|
|
|
|
/* save stuff for the _chain function */
|
|
GST_OBJECT_LOCK (visual);
|
|
visual->proportion = proportion;
|
|
if (diff >= 0)
|
|
/* we're late, this is a good estimate for next displayable
|
|
* frame (see part-qos.txt) */
|
|
visual->earliest_time = timestamp + 2 * diff + visual->duration;
|
|
else
|
|
visual->earliest_time = timestamp + diff;
|
|
|
|
GST_OBJECT_UNLOCK (visual);
|
|
|
|
res = gst_pad_push_event (visual->sinkpad, event);
|
|
break;
|
|
}
|
|
default:
|
|
res = gst_pad_push_event (visual->sinkpad, event);
|
|
break;
|
|
}
|
|
|
|
gst_object_unref (visual);
|
|
return res;
|
|
}
|
|
|
|
/* allocate and output buffer, if no format was negotiated, this
|
|
* function will negotiate one. After calling this function, a
|
|
* reverse negotiation could have happened. */
|
|
static GstFlowReturn
|
|
get_buffer (GstVisual * visual, GstBuffer ** outbuf)
|
|
{
|
|
GstFlowReturn ret;
|
|
|
|
/* we don't know an output format yet, pick one */
|
|
if (GST_PAD_CAPS (visual->srcpad) == NULL) {
|
|
if (!gst_vis_src_negotiate (visual))
|
|
return GST_FLOW_NOT_NEGOTIATED;
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (visual, "allocating output buffer with caps %"
|
|
GST_PTR_FORMAT, GST_PAD_CAPS (visual->srcpad));
|
|
|
|
/* now allocate a buffer with the last negotiated format.
|
|
* Downstream could renegotiate a new format, which will trigger
|
|
* our setcaps function on the source pad. */
|
|
ret =
|
|
gst_pad_alloc_buffer_and_set_caps (visual->srcpad,
|
|
GST_BUFFER_OFFSET_NONE, visual->outsize,
|
|
GST_PAD_CAPS (visual->srcpad), outbuf);
|
|
|
|
/* no buffer allocated, we don't care why. */
|
|
if (ret != GST_FLOW_OK)
|
|
return ret;
|
|
|
|
return GST_FLOW_OK;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_visual_chain (GstPad * pad, GstBuffer * buffer)
|
|
{
|
|
GstBuffer *outbuf = NULL;
|
|
guint i;
|
|
GstVisual *visual = GST_VISUAL (gst_pad_get_parent (pad));
|
|
GstFlowReturn ret = GST_FLOW_OK;
|
|
guint avail;
|
|
|
|
GST_DEBUG_OBJECT (visual, "chain function called");
|
|
|
|
/* If we don't have an output format yet, preallocate a buffer to try and
|
|
* set one */
|
|
if (GST_PAD_CAPS (visual->srcpad) == NULL) {
|
|
ret = get_buffer (visual, &outbuf);
|
|
if (ret != GST_FLOW_OK) {
|
|
gst_buffer_unref (buffer);
|
|
goto beach;
|
|
}
|
|
}
|
|
|
|
/* resync on DISCONT */
|
|
if (GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DISCONT)) {
|
|
gst_adapter_clear (visual->adapter);
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (visual,
|
|
"Input buffer has %d samples, time=%" G_GUINT64_FORMAT,
|
|
GST_BUFFER_SIZE (buffer) / visual->bps, GST_BUFFER_TIMESTAMP (buffer));
|
|
|
|
gst_adapter_push (visual->adapter, buffer);
|
|
|
|
while (TRUE) {
|
|
gboolean need_skip;
|
|
const guint16 *data;
|
|
guint64 dist, timestamp;
|
|
|
|
GST_DEBUG_OBJECT (visual, "processing buffer");
|
|
|
|
avail = gst_adapter_available (visual->adapter);
|
|
GST_DEBUG_OBJECT (visual, "avail now %u", avail);
|
|
|
|
/* we need at least 512 samples */
|
|
if (avail < 512 * visual->bps)
|
|
break;
|
|
|
|
/* we need at least enough samples to make one frame */
|
|
if (avail < visual->spf * visual->bps)
|
|
break;
|
|
|
|
/* get timestamp of the current adapter byte */
|
|
timestamp = gst_adapter_prev_timestamp (visual->adapter, &dist);
|
|
if (GST_CLOCK_TIME_IS_VALID (timestamp)) {
|
|
/* convert bytes to time */
|
|
dist /= visual->bps;
|
|
timestamp += gst_util_uint64_scale_int (dist, GST_SECOND, visual->rate);
|
|
}
|
|
|
|
if (timestamp != -1) {
|
|
gint64 qostime;
|
|
|
|
/* QoS is done on running time */
|
|
qostime = gst_segment_to_running_time (&visual->segment, GST_FORMAT_TIME,
|
|
timestamp);
|
|
|
|
GST_OBJECT_LOCK (visual);
|
|
/* check for QoS, don't compute buffers that are known to be late */
|
|
need_skip = visual->earliest_time != -1 &&
|
|
qostime <= visual->earliest_time;
|
|
GST_OBJECT_UNLOCK (visual);
|
|
|
|
if (need_skip) {
|
|
GST_WARNING_OBJECT (visual,
|
|
"QoS: skip ts: %" GST_TIME_FORMAT ", earliest: %" GST_TIME_FORMAT,
|
|
GST_TIME_ARGS (qostime), GST_TIME_ARGS (visual->earliest_time));
|
|
goto skip;
|
|
}
|
|
}
|
|
|
|
/* Read 512 samples per channel */
|
|
data =
|
|
(const guint16 *) gst_adapter_peek (visual->adapter, 512 * visual->bps);
|
|
|
|
#if defined(VISUAL_API_VERSION) && VISUAL_API_VERSION >= 4000 && VISUAL_API_VERSION < 5000
|
|
{
|
|
VisBuffer *lbuf, *rbuf;
|
|
guint16 ldata[512], rdata[512];
|
|
VisAudioSampleRateType rate;
|
|
|
|
lbuf = visual_buffer_new_with_buffer (ldata, sizeof (ldata), NULL);
|
|
rbuf = visual_buffer_new_with_buffer (rdata, sizeof (rdata), NULL);
|
|
|
|
if (visual->channels == 2) {
|
|
for (i = 0; i < 512; i++) {
|
|
ldata[i] = *data++;
|
|
rdata[i] = *data++;
|
|
}
|
|
} else {
|
|
for (i = 0; i < 512; i++) {
|
|
ldata[i] = *data;
|
|
rdata[i] = *data++;
|
|
}
|
|
}
|
|
|
|
switch (visual->rate) {
|
|
case 8000:
|
|
rate = VISUAL_AUDIO_SAMPLE_RATE_8000;
|
|
break;
|
|
case 11250:
|
|
rate = VISUAL_AUDIO_SAMPLE_RATE_11250;
|
|
break;
|
|
case 22500:
|
|
rate = VISUAL_AUDIO_SAMPLE_RATE_22500;
|
|
break;
|
|
case 32000:
|
|
rate = VISUAL_AUDIO_SAMPLE_RATE_32000;
|
|
break;
|
|
case 44100:
|
|
rate = VISUAL_AUDIO_SAMPLE_RATE_44100;
|
|
break;
|
|
case 48000:
|
|
rate = VISUAL_AUDIO_SAMPLE_RATE_48000;
|
|
break;
|
|
case 96000:
|
|
rate = VISUAL_AUDIO_SAMPLE_RATE_96000;
|
|
break;
|
|
default:
|
|
visual_object_unref (VISUAL_OBJECT (lbuf));
|
|
visual_object_unref (VISUAL_OBJECT (rbuf));
|
|
GST_ERROR_OBJECT (visual, "unsupported rate %d", visual->rate);
|
|
ret = GST_FLOW_ERROR;
|
|
goto beach;
|
|
break;
|
|
}
|
|
|
|
visual_audio_samplepool_input_channel (visual->audio->samplepool,
|
|
lbuf,
|
|
rate, VISUAL_AUDIO_SAMPLE_FORMAT_S16, VISUAL_AUDIO_CHANNEL_LEFT);
|
|
visual_audio_samplepool_input_channel (visual->audio->samplepool,
|
|
rbuf,
|
|
rate, VISUAL_AUDIO_SAMPLE_FORMAT_S16, VISUAL_AUDIO_CHANNEL_RIGHT);
|
|
|
|
visual_object_unref (VISUAL_OBJECT (lbuf));
|
|
visual_object_unref (VISUAL_OBJECT (rbuf));
|
|
|
|
}
|
|
#else
|
|
if (visual->channels == 2) {
|
|
for (i = 0; i < 512; i++) {
|
|
visual->audio->plugpcm[0][i] = *data++;
|
|
visual->audio->plugpcm[1][i] = *data++;
|
|
}
|
|
} else {
|
|
for (i = 0; i < 512; i++) {
|
|
visual->audio->plugpcm[0][i] = *data;
|
|
visual->audio->plugpcm[1][i] = *data++;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/* alloc a buffer if we don't have one yet, this happens
|
|
* when we pushed a buffer in this while loop before */
|
|
if (outbuf == NULL) {
|
|
ret = get_buffer (visual, &outbuf);
|
|
if (ret != GST_FLOW_OK) {
|
|
goto beach;
|
|
}
|
|
}
|
|
visual_video_set_buffer (visual->video, GST_BUFFER_DATA (outbuf));
|
|
visual_audio_analyze (visual->audio);
|
|
visual_actor_run (visual->actor, visual->audio);
|
|
visual_video_set_buffer (visual->video, NULL);
|
|
GST_DEBUG_OBJECT (visual, "rendered one frame");
|
|
|
|
GST_BUFFER_TIMESTAMP (outbuf) = timestamp;
|
|
GST_BUFFER_DURATION (outbuf) = visual->duration;
|
|
|
|
ret = gst_pad_push (visual->srcpad, outbuf);
|
|
outbuf = NULL;
|
|
|
|
skip:
|
|
GST_DEBUG_OBJECT (visual, "finished frame, flushing %u samples from input",
|
|
visual->spf);
|
|
|
|
/* Flush out the number of samples per frame */
|
|
gst_adapter_flush (visual->adapter, visual->spf * visual->bps);
|
|
|
|
/* quit the loop if something was wrong */
|
|
if (ret != GST_FLOW_OK)
|
|
break;
|
|
}
|
|
|
|
beach:
|
|
|
|
if (outbuf != NULL)
|
|
gst_buffer_unref (outbuf);
|
|
|
|
gst_object_unref (visual);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static GstStateChangeReturn
|
|
gst_visual_change_state (GstElement * element, GstStateChange transition)
|
|
{
|
|
GstVisual *visual = GST_VISUAL (element);
|
|
GstStateChangeReturn ret;
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_NULL_TO_READY:
|
|
visual->actor =
|
|
visual_actor_new (GST_VISUAL_GET_CLASS (visual)->plugin->info->
|
|
plugname);
|
|
visual->video = visual_video_new ();
|
|
visual->audio = visual_audio_new ();
|
|
/* can't have a play without actors */
|
|
if (!visual->actor || !visual->video)
|
|
goto no_actors;
|
|
|
|
if (visual_actor_realize (visual->actor) != 0)
|
|
goto no_realize;
|
|
|
|
visual_actor_set_video (visual->actor, visual->video);
|
|
break;
|
|
case GST_STATE_CHANGE_READY_TO_PAUSED:
|
|
gst_visual_reset (visual);
|
|
break;
|
|
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
|
|
break;
|
|
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
|
break;
|
|
case GST_STATE_CHANGE_READY_TO_NULL:
|
|
gst_visual_clear_actors (visual);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
|
|
/* ERRORS */
|
|
no_actors:
|
|
{
|
|
GST_ELEMENT_ERROR (visual, LIBRARY, INIT, (NULL),
|
|
("could not create actors"));
|
|
gst_visual_clear_actors (visual);
|
|
return GST_STATE_CHANGE_FAILURE;
|
|
}
|
|
no_realize:
|
|
{
|
|
GST_ELEMENT_ERROR (visual, LIBRARY, INIT, (NULL),
|
|
("could not realize actor"));
|
|
gst_visual_clear_actors (visual);
|
|
return GST_STATE_CHANGE_FAILURE;
|
|
}
|
|
}
|
|
|
|
static void
|
|
make_valid_name (char *name)
|
|
{
|
|
/*
|
|
* Replace invalid chars with _ in the type name
|
|
*/
|
|
static const gchar extra_chars[] = "-_+";
|
|
gchar *p = name;
|
|
|
|
for (; *p; p++) {
|
|
int valid = ((p[0] >= 'A' && p[0] <= 'Z') ||
|
|
(p[0] >= 'a' && p[0] <= 'z') ||
|
|
(p[0] >= '0' && p[0] <= '9') || strchr (extra_chars, p[0]));
|
|
if (!valid)
|
|
*p = '_';
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
gst_visual_actor_plugin_is_gl (VisObject * plugin, const gchar * name)
|
|
{
|
|
gboolean is_gl;
|
|
gint depth;
|
|
|
|
#if !defined(VISUAL_API_VERSION)
|
|
|
|
depth = VISUAL_PLUGIN_ACTOR (plugin)->depth;
|
|
is_gl = (depth == VISUAL_VIDEO_DEPTH_GL);
|
|
|
|
#elif VISUAL_API_VERSION >= 4000 && VISUAL_API_VERSION < 5000
|
|
|
|
depth = VISUAL_ACTOR_PLUGIN (plugin)->vidoptions.depth;
|
|
/* FIXME: how to figure this out correctly in 0.4? */
|
|
is_gl = (depth & VISUAL_VIDEO_DEPTH_GL) == VISUAL_VIDEO_DEPTH_GL;
|
|
|
|
#else
|
|
# error what libvisual version is this?
|
|
#endif
|
|
|
|
if (!is_gl) {
|
|
GST_DEBUG ("plugin %s is not a GL plugin (%d), registering", name, depth);
|
|
} else {
|
|
GST_DEBUG ("plugin %s is a GL plugin (%d), ignoring", name, depth);
|
|
}
|
|
|
|
return is_gl;
|
|
}
|
|
|
|
static gboolean
|
|
plugin_init (GstPlugin * plugin)
|
|
{
|
|
guint i, count;
|
|
VisList *list;
|
|
|
|
GST_DEBUG_CATEGORY_INIT (libvisual_debug, "libvisual", 0,
|
|
"libvisual audio visualisations");
|
|
|
|
#ifdef LIBVISUAL_PLUGINSBASEDIR
|
|
gst_plugin_add_dependency_simple (plugin, "HOME/.libvisual/actor",
|
|
LIBVISUAL_PLUGINSBASEDIR "/actor", NULL, GST_PLUGIN_DEPENDENCY_FLAG_NONE);
|
|
#endif
|
|
|
|
visual_log_set_verboseness (VISUAL_LOG_VERBOSENESS_LOW);
|
|
visual_log_set_info_handler (libvisual_log_handler, (void *) GST_LEVEL_INFO);
|
|
visual_log_set_warning_handler (libvisual_log_handler,
|
|
(void *) GST_LEVEL_WARNING);
|
|
visual_log_set_critical_handler (libvisual_log_handler,
|
|
(void *) GST_LEVEL_ERROR);
|
|
visual_log_set_error_handler (libvisual_log_handler,
|
|
(void *) GST_LEVEL_ERROR);
|
|
|
|
if (!visual_is_initialized ())
|
|
if (visual_init (NULL, NULL) != 0)
|
|
return FALSE;
|
|
|
|
list = visual_actor_get_list ();
|
|
|
|
#if !defined(VISUAL_API_VERSION)
|
|
count = visual_list_count (list);
|
|
#elif VISUAL_API_VERSION >= 4000 && VISUAL_API_VERSION < 5000
|
|
count = visual_collection_size (VISUAL_COLLECTION (list));
|
|
#endif
|
|
|
|
for (i = 0; i < count; i++) {
|
|
VisPluginRef *ref = visual_list_get (list, i);
|
|
VisPluginData *visplugin = NULL;
|
|
gboolean skip = FALSE;
|
|
GType type;
|
|
gchar *name;
|
|
GTypeInfo info = {
|
|
sizeof (GstVisualClass),
|
|
NULL,
|
|
NULL,
|
|
gst_visual_class_init,
|
|
NULL,
|
|
ref,
|
|
sizeof (GstVisual),
|
|
0,
|
|
NULL
|
|
};
|
|
|
|
visplugin = visual_plugin_load (ref);
|
|
|
|
if (ref->info->plugname == NULL)
|
|
continue;
|
|
|
|
/* Blacklist some plugins */
|
|
if (strcmp (ref->info->plugname, "gstreamer") == 0 ||
|
|
strcmp (ref->info->plugname, "gdkpixbuf") == 0) {
|
|
skip = TRUE;
|
|
} else {
|
|
/* Ignore plugins that only support GL output for now */
|
|
skip = gst_visual_actor_plugin_is_gl (visplugin->info->plugin,
|
|
visplugin->info->plugname);
|
|
}
|
|
|
|
visual_plugin_unload (visplugin);
|
|
|
|
if (!skip) {
|
|
name = g_strdup_printf ("GstVisual%s", ref->info->plugname);
|
|
make_valid_name (name);
|
|
type = g_type_register_static (GST_TYPE_VISUAL, name, &info, 0);
|
|
g_free (name);
|
|
|
|
name = g_strdup_printf ("libvisual_%s", ref->info->plugname);
|
|
make_valid_name (name);
|
|
if (!gst_element_register (plugin, name, GST_RANK_NONE, type)) {
|
|
g_free (name);
|
|
return FALSE;
|
|
}
|
|
g_free (name);
|
|
}
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
|
|
GST_VERSION_MINOR,
|
|
"libvisual",
|
|
"libvisual visualization plugins",
|
|
plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)
|