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Port monoscope visualisation to 0.10.
Original commit message from CVS: * configure.ac: * gst/monoscope/Makefile.am: * gst/monoscope/gstmonoscope.c: (gst_monoscope_base_init), (gst_monoscope_class_init), (gst_monoscope_init), (gst_monoscope_finalize), (gst_monoscope_reset), (gst_monoscope_sink_setcaps), (gst_monoscope_src_setcaps), (gst_monoscope_src_negotiate), (get_buffer), (gst_monoscope_chain), (gst_monoscope_sink_event), (gst_monoscope_src_event), (gst_monoscope_change_state), (plugin_init): * gst/monoscope/gstmonoscope.h: Port monoscope visualisation to 0.10.
This commit is contained in:
Tim-Philipp Müller
parent
5130c720e4
commit
3ff8660a08
5 changed files with 513 additions and 162 deletions
14
ChangeLog
14
ChangeLog
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@ -1,3 +1,17 @@
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2006-07-03 Tim-Philipp Müller <tim at centricular dot net>
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* configure.ac:
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* gst/monoscope/Makefile.am:
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* gst/monoscope/gstmonoscope.c: (gst_monoscope_base_init),
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(gst_monoscope_class_init), (gst_monoscope_init),
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(gst_monoscope_finalize), (gst_monoscope_reset),
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(gst_monoscope_sink_setcaps), (gst_monoscope_src_setcaps),
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(gst_monoscope_src_negotiate), (get_buffer), (gst_monoscope_chain),
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(gst_monoscope_sink_event), (gst_monoscope_src_event),
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(gst_monoscope_change_state), (plugin_init):
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* gst/monoscope/gstmonoscope.h:
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Port monoscope visualisation to 0.10.
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2006-07-03 Tim-Philipp Müller <tim at centricular dot net>
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* gst/apetag/gsttagdemux.c: (gst_tag_demux_chain):
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@ -87,12 +87,13 @@ GST_PLUGINS_ALL="\
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debug \
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effectv \
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id3demux \
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icydemux \
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icydemux \
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flx \
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goom \
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law \
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level \
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matroska \
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monoscope \
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multipart \
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rtp \
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rtsp \
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@ -765,6 +766,7 @@ gst/goom/Makefile
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gst/law/Makefile
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gst/level/Makefile
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gst/matroska/Makefile
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gst/monoscope/Makefile
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gst/multipart/Makefile
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gst/rtp/Makefile
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gst/rtsp/Makefile
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@ -2,8 +2,8 @@ plugin_LTLIBRARIES = libgstmonoscope.la
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libgstmonoscope_la_SOURCES = gstmonoscope.c monoscope.c convolve.c
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noinst_HEADERS = monoscope.h convolve.h
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noinst_HEADERS = gstmonoscope.h monoscope.h convolve.h
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libgstmonoscope_la_CFLAGS = $(GST_CFLAGS)
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libgstmonoscope_la_LIBADD = $(GST_LIBS)
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libgstmonoscope_la_CFLAGS = $(GST_CFLAGS) $(GST_BASE_CFLAGS)
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libgstmonoscope_la_LIBADD = $(GST_LIBS) $(GST_BASE_LIBS)
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libgstmonoscope_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
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@ -1,5 +1,7 @@
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/* gstmonoscope.c: implementation of monoscope drawing element
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* Copyright (C) <2002> Richard Boulton <richard@tartarus.org>
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* Copyright (C) <2006> Tim-Philipp Müller <tim centricular net>
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* Copyright (C) <2006> Wim Taymans <wim at fluendo 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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@ -17,57 +19,33 @@
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* Boston, MA 02111-1307, USA.
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*/
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/**
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* SECTION:element-monoscope
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* @see_also: monoscope
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*
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* <refsect2>
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* <title>Example launch line</title>
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* <para>
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* <programlisting>
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* gst-launch -v audiotestsrc ! audioconvert ! monoscope ! ffmpegcolorspace ! ximagesink
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* </programlisting>
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* </para>
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* </refsect2>
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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/video/video.h>
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#include <gst/audio/audio.h>
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#include <string.h>
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#include "gstmonoscope.h"
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#include "monoscope.h"
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GST_DEBUG_CATEGORY (monoscope_debug);
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GST_DEBUG_CATEGORY_STATIC (monoscope_debug);
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#define GST_CAT_DEFAULT monoscope_debug
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#define GST_TYPE_MONOSCOPE (gst_monoscope_get_type())
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#define GST_MONOSCOPE(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_MONOSCOPE,GstMonoscope))
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#define GST_MONOSCOPE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_MONOSCOPE,GstMonoscope))
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#define GST_IS_MONOSCOPE(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_MONOSCOPE))
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#define GST_IS_MONOSCOPE_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_MONOSCOPE))
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typedef struct _GstMonoscope GstMonoscope;
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typedef struct _GstMonoscopeClass GstMonoscopeClass;
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struct _GstMonoscope
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{
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GstElement element;
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/* pads */
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GstPad *sinkpad, *srcpad;
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/* the timestamp of the next frame */
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guint64 next_time;
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gint16 datain[512];
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/* video state */
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gdouble fps;
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gint width;
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gint height;
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gboolean first_buffer;
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/* visualisation state */
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struct monoscope_state *visstate;
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};
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struct _GstMonoscopeClass
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{
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GstElementClass parent_class;
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};
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GType gst_monoscope_get_type (void);
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/* elementfactory information */
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static const GstElementDetails gst_monoscope_details =
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GST_ELEMENT_DETAILS ("Monoscope",
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@ -75,19 +53,6 @@ GST_ELEMENT_DETAILS ("Monoscope",
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"Displays a highly stabilised waveform of audio input",
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"Richard Boulton <richard@tartarus.org>");
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/* signals and args */
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enum
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{
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/* FILL ME */
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LAST_SIGNAL
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};
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enum
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{
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ARG_0
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/* FILL ME */
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};
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#if G_BYTE_ORDER == G_BIG_ENDIAN
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static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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@ -125,42 +90,20 @@ static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
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);
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static void gst_monoscope_class_init (GstMonoscopeClass * klass);
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static void gst_monoscope_base_init (GstMonoscopeClass * klass);
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static void gst_monoscope_init (GstMonoscope * monoscope);
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GST_BOILERPLATE (GstMonoscope, gst_monoscope, GstElement, GST_TYPE_ELEMENT);
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static void gst_monoscope_chain (GstPad * pad, GstData * _data);
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static GstPadLinkReturn
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gst_monoscope_srcconnect (GstPad * pad, const GstCaps * caps);
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static GstElementClass *parent_class = NULL;
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GType
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gst_monoscope_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 (GstMonoscopeClass),
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(GBaseInitFunc) gst_monoscope_base_init,
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NULL,
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(GClassInitFunc) gst_monoscope_class_init,
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NULL,
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NULL,
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sizeof (GstMonoscope),
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0,
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(GInstanceInitFunc) gst_monoscope_init,
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};
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type = g_type_register_static (GST_TYPE_ELEMENT, "GstMonoscope", &info, 0);
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}
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return type;
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}
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static void gst_monoscope_finalize (GObject * object);
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static GstFlowReturn gst_monoscope_chain (GstPad * pad, GstBuffer * buf);
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static gboolean gst_monoscope_src_setcaps (GstPad * pad, GstCaps * caps);
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static gboolean gst_monoscope_sink_setcaps (GstPad * pad, GstCaps * caps);
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static void gst_monoscope_reset (GstMonoscope * monoscope);
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static gboolean gst_monoscope_sink_event (GstPad * pad, GstEvent * event);
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static gboolean gst_monoscope_src_event (GstPad * pad, GstEvent * event);
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static GstStateChangeReturn gst_monoscope_change_state (GstElement * element,
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GstStateChange transition);
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static void
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gst_monoscope_base_init (GstMonoscopeClass * klass)
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gst_monoscope_base_init (gpointer klass)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
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@ -180,122 +123,434 @@ gst_monoscope_class_init (GstMonoscopeClass * 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_monoscope_finalize;
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GST_DEBUG_CATEGORY_INIT (monoscope_debug, "monoscope", 0,
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"monoscope element");
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gstelement_class->change_state =
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GST_DEBUG_FUNCPTR (gst_monoscope_change_state);
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}
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static void
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gst_monoscope_init (GstMonoscope * monoscope)
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gst_monoscope_init (GstMonoscope * monoscope, GstMonoscopeClass * klass)
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{
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/* create the sink and src pads */
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monoscope->sinkpad =
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gst_pad_new_from_template (gst_static_pad_template_get (&sink_template),
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"sink");
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monoscope->srcpad =
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gst_pad_new_from_template (gst_static_pad_template_get (&src_template),
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"src");
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gst_pad_new_from_static_template (&sink_template, "sink");
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gst_pad_set_chain_function (monoscope->sinkpad,
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GST_DEBUG_FUNCPTR (gst_monoscope_chain));
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gst_pad_set_event_function (monoscope->sinkpad,
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GST_DEBUG_FUNCPTR (gst_monoscope_sink_event));
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gst_pad_set_setcaps_function (monoscope->sinkpad,
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GST_DEBUG_FUNCPTR (gst_monoscope_sink_setcaps));
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gst_element_add_pad (GST_ELEMENT (monoscope), monoscope->sinkpad);
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monoscope->srcpad = gst_pad_new_from_static_template (&src_template, "src");
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gst_pad_set_setcaps_function (monoscope->srcpad,
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GST_DEBUG_FUNCPTR (gst_monoscope_src_setcaps));
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gst_pad_set_event_function (monoscope->srcpad,
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GST_DEBUG_FUNCPTR (gst_monoscope_src_event));
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gst_element_add_pad (GST_ELEMENT (monoscope), monoscope->srcpad);
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gst_pad_set_chain_function (monoscope->sinkpad, gst_monoscope_chain);
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gst_pad_set_link_function (monoscope->srcpad, gst_monoscope_srcconnect);
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monoscope->next_time = 0;
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monoscope->adapter = gst_adapter_new ();
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monoscope->next_ts = GST_CLOCK_TIME_NONE;
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monoscope->bps = sizeof (gint16);
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/* reset the initial video state */
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monoscope->first_buffer = TRUE;
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monoscope->width = 256;
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monoscope->height = 128;
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monoscope->fps = 25.; /* desired frame rate */
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monoscope->fps_num = 25; /* desired frame rate */
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monoscope->fps_denom = 1;
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monoscope->visstate = NULL;
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}
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static GstPadLinkReturn
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gst_monoscope_srcconnect (GstPad * pad, const GstCaps * caps)
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static void
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gst_monoscope_finalize (GObject * object)
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{
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GstMonoscope *monoscope = GST_MONOSCOPE (gst_pad_get_parent (pad));
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GstMonoscope *monoscope = GST_MONOSCOPE (object);
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if (monoscope->visstate)
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monoscope_close (monoscope->visstate);
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g_object_unref (monoscope->adapter);
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static void
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gst_monoscope_reset (GstMonoscope * monoscope)
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{
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monoscope->next_ts = GST_CLOCK_TIME_NONE;
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gst_adapter_clear (monoscope->adapter);
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gst_segment_init (&monoscope->segment, GST_FORMAT_UNDEFINED);
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GST_OBJECT_LOCK (monoscope);
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monoscope->proportion = 1.0;
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monoscope->earliest_time = -1;
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GST_OBJECT_UNLOCK (monoscope);
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}
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static gboolean
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gst_monoscope_sink_setcaps (GstPad * pad, GstCaps * caps)
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{
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GstMonoscope *monoscope = GST_MONOSCOPE (GST_PAD_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, "rate", &monoscope->rate);
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GST_DEBUG_OBJECT (monoscope, "sample rate = %d", monoscope->rate);
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return TRUE;
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}
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static gboolean
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gst_monoscope_src_setcaps (GstPad * pad, GstCaps * caps)
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{
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GstMonoscope *monoscope = GST_MONOSCOPE (GST_PAD_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, "width", &monoscope->width);
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gst_structure_get_int (structure, "height", &monoscope->height);
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gst_structure_get_double (structure, "framerate", &monoscope->fps);
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gst_structure_get_fraction (structure, "framerate", &monoscope->fps_num,
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&monoscope->fps_denom);
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gst_object_unref (monoscope);
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monoscope->outsize = monoscope->width * monoscope->height * 4;
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monoscope->frame_duration = gst_util_uint64_scale_int (GST_SECOND,
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monoscope->fps_denom, monoscope->fps_num);
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monoscope->spf =
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gst_util_uint64_scale_int (monoscope->rate, monoscope->fps_denom,
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monoscope->fps_num);
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return GST_PAD_LINK_OK;
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GST_DEBUG_OBJECT (monoscope, "dimension %dx%d, framerate %d/%d, spf %d",
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monoscope->width, monoscope->height, monoscope->fps_num,
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monoscope->fps_denom, monoscope->spf);
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if (monoscope->visstate) {
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monoscope_close (monoscope->visstate);
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monoscope->visstate = NULL;
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}
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monoscope->visstate = monoscope_init (monoscope->width, monoscope->height);
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return (monoscope->visstate != NULL);
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}
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static void
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gst_monoscope_chain (GstPad * pad, GstData * _data)
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static gboolean
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gst_monoscope_src_negotiate (GstMonoscope * monoscope)
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{
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GstCaps *othercaps, *target, *intersect;
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GstStructure *structure;
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const GstCaps *templ;
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templ = gst_pad_get_pad_template_caps (monoscope->srcpad);
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GST_DEBUG_OBJECT (monoscope, "performing negotiation");
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/* see what the peer can do */
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othercaps = gst_pad_peer_get_caps (monoscope->srcpad);
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if (othercaps) {
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intersect = gst_caps_intersect (othercaps, templ);
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gst_caps_unref (othercaps);
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|
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if (gst_caps_is_empty (intersect))
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goto no_format;
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|
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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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target = gst_caps_ref ((GstCaps *) templ);
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}
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|
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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", 25, 1);
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gst_pad_set_caps (monoscope->srcpad, target);
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gst_caps_unref (target);
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return TRUE;
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|
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no_format:
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{
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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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|
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static GstFlowReturn
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get_buffer (GstMonoscope * monoscope, GstBuffer ** outbuf)
|
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{
|
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GstFlowReturn ret;
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|
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if (GST_PAD_CAPS (monoscope->srcpad) == NULL) {
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if (!gst_monoscope_src_negotiate (monoscope))
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return GST_FLOW_NOT_NEGOTIATED;
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}
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GST_LOG_OBJECT (monoscope, "allocating output buffer of size %d with caps %"
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GST_PTR_FORMAT, monoscope->outsize, GST_PAD_CAPS (monoscope->srcpad));
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ret =
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gst_pad_alloc_buffer_and_set_caps (monoscope->srcpad,
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GST_BUFFER_OFFSET_NONE, monoscope->outsize,
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GST_PAD_CAPS (monoscope->srcpad), outbuf);
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if (ret != GST_FLOW_OK)
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return ret;
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|
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if (*outbuf == NULL)
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return GST_FLOW_ERROR;
|
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|
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return GST_FLOW_OK;
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}
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static GstFlowReturn
|
||||
gst_monoscope_chain (GstPad * pad, GstBuffer * inbuf)
|
||||
{
|
||||
GstBuffer *bufin = GST_BUFFER (_data);
|
||||
GstMonoscope *monoscope;
|
||||
GstBuffer *bufout;
|
||||
guint32 samples_in;
|
||||
gint16 *data;
|
||||
gint i;
|
||||
GstFlowReturn flow_ret;
|
||||
|
||||
monoscope = GST_MONOSCOPE (GST_PAD_PARENT (pad));
|
||||
|
||||
/* don't try to combine samples from discont buffer */
|
||||
if (GST_BUFFER_FLAG_IS_SET (inbuf, GST_BUFFER_FLAG_DISCONT)) {
|
||||
gst_adapter_clear (monoscope->adapter);
|
||||
monoscope->next_ts = GST_CLOCK_TIME_NONE;
|
||||
}
|
||||
|
||||
/* Match timestamps from the incoming audio */
|
||||
if (GST_BUFFER_TIMESTAMP (inbuf) != GST_CLOCK_TIME_NONE)
|
||||
monoscope->next_ts = GST_BUFFER_TIMESTAMP (inbuf);
|
||||
|
||||
GST_LOG_OBJECT (monoscope, "in buffer has %d samples, ts=%" GST_TIME_FORMAT,
|
||||
GST_BUFFER_SIZE (inbuf) / monoscope->bps,
|
||||
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (inbuf)));
|
||||
|
||||
gst_adapter_push (monoscope->adapter, inbuf);
|
||||
inbuf = NULL;
|
||||
|
||||
flow_ret = GST_FLOW_OK;
|
||||
|
||||
/* Collect samples until we have enough for an output frame */
|
||||
while (flow_ret == GST_FLOW_OK) {
|
||||
gint16 *samples;
|
||||
GstBuffer *outbuf = NULL;
|
||||
guint32 *pixels, avail, bytesperframe;
|
||||
|
||||
avail = gst_adapter_available (monoscope->adapter);
|
||||
GST_LOG_OBJECT (monoscope, "bytes avail now %u", avail);
|
||||
|
||||
/* do negotiation if not done yet, so ->spf etc. is set */
|
||||
if (GST_PAD_CAPS (monoscope->srcpad) == NULL) {
|
||||
flow_ret = get_buffer (monoscope, &outbuf);
|
||||
if (flow_ret != GST_FLOW_OK) {
|
||||
gst_buffer_unref (inbuf);
|
||||
goto out;
|
||||
}
|
||||
gst_buffer_unref (outbuf);
|
||||
outbuf = NULL;
|
||||
}
|
||||
|
||||
bytesperframe = monoscope->spf * monoscope->bps;
|
||||
if (avail < bytesperframe)
|
||||
break;
|
||||
|
||||
/* FIXME: something is wrong with QoS, we are skipping way too much
|
||||
* stuff even with very low CPU loads */
|
||||
#if 0
|
||||
if (monoscope->next_ts != -1) {
|
||||
gboolean need_skip;
|
||||
gint64 qostime;
|
||||
|
||||
qostime = gst_segment_to_running_time (&monoscope->segment,
|
||||
GST_FORMAT_TIME, monoscope->next_ts);
|
||||
|
||||
GST_OBJECT_LOCK (monoscope);
|
||||
/* check for QoS, don't compute buffers that are known to be late */
|
||||
need_skip =
|
||||
GST_CLOCK_TIME_IS_VALID (monoscope->earliest_time) &&
|
||||
qostime <= monoscope->earliest_time;
|
||||
GST_OBJECT_UNLOCK (monoscope);
|
||||
|
||||
if (need_skip) {
|
||||
GST_WARNING_OBJECT (monoscope,
|
||||
"QoS: skip ts: %" GST_TIME_FORMAT ", earliest: %" GST_TIME_FORMAT,
|
||||
GST_TIME_ARGS (qostime), GST_TIME_ARGS (monoscope->earliest_time));
|
||||
goto skip;
|
||||
}
|
||||
}
|
||||
#endif
|
||||
|
||||
samples = (gint16 *) gst_adapter_peek (monoscope->adapter, bytesperframe);
|
||||
|
||||
if (monoscope->spf < 512) {
|
||||
gint16 in_data[512], i;
|
||||
|
||||
for (i = 0; i < 512; ++i) {
|
||||
gdouble off;
|
||||
|
||||
off = ((gdouble) i * (gdouble) monoscope->spf) / 512.0;
|
||||
in_data[i] = samples[MIN ((guint) off, monoscope->spf)];
|
||||
}
|
||||
pixels = monoscope_update (monoscope->visstate, in_data);
|
||||
} else {
|
||||
/* not really correct, but looks much prettier */
|
||||
pixels = monoscope_update (monoscope->visstate, samples);
|
||||
}
|
||||
|
||||
flow_ret = get_buffer (monoscope, &outbuf);
|
||||
if (flow_ret != GST_FLOW_OK) {
|
||||
gst_buffer_unref (inbuf);
|
||||
goto out;
|
||||
}
|
||||
|
||||
memcpy (GST_BUFFER_DATA (outbuf), pixels, monoscope->outsize);
|
||||
|
||||
GST_BUFFER_TIMESTAMP (outbuf) = monoscope->next_ts;
|
||||
GST_BUFFER_DURATION (outbuf) = monoscope->frame_duration;
|
||||
|
||||
flow_ret = gst_pad_push (monoscope->srcpad, outbuf);
|
||||
|
||||
#if 0
|
||||
skip:
|
||||
#endif
|
||||
|
||||
if (GST_CLOCK_TIME_IS_VALID (monoscope->next_ts))
|
||||
monoscope->next_ts += monoscope->frame_duration;
|
||||
|
||||
gst_adapter_flush (monoscope->adapter, bytesperframe);
|
||||
}
|
||||
|
||||
out:
|
||||
|
||||
return flow_ret;
|
||||
}
|
||||
|
||||
static gboolean
|
||||
gst_monoscope_sink_event (GstPad * pad, GstEvent * event)
|
||||
{
|
||||
GstMonoscope *monoscope;
|
||||
gboolean res;
|
||||
|
||||
monoscope = GST_MONOSCOPE (gst_pad_get_parent (pad));
|
||||
|
||||
GST_DEBUG ("Monoscope: chainfunc called");
|
||||
switch (GST_EVENT_TYPE (event)) {
|
||||
case GST_EVENT_FLUSH_START:
|
||||
res = gst_pad_push_event (monoscope->srcpad, event);
|
||||
break;
|
||||
case GST_EVENT_FLUSH_STOP:
|
||||
gst_monoscope_reset (monoscope);
|
||||
res = gst_pad_push_event (monoscope->srcpad, event);
|
||||
break;
|
||||
case GST_EVENT_NEWSEGMENT:
|
||||
{
|
||||
GstFormat format;
|
||||
gdouble rate, arate;
|
||||
gint64 start, stop, time;
|
||||
gboolean update;
|
||||
|
||||
samples_in = GST_BUFFER_SIZE (bufin) / sizeof (gint16);
|
||||
/* the newsegment values are used to clip the input samples
|
||||
* and to convert the incomming timestamps to running time so
|
||||
* we can do QoS */
|
||||
gst_event_parse_new_segment_full (event, &update, &rate, &arate, &format,
|
||||
&start, &stop, &time);
|
||||
|
||||
GST_DEBUG ("input buffer has %d samples", samples_in);
|
||||
/* now configure the values */
|
||||
gst_segment_set_newsegment_full (&monoscope->segment, update,
|
||||
rate, arate, format, start, stop, time);
|
||||
|
||||
/* FIXME: should really select the first 1024 samples after the timestamp. */
|
||||
if (GST_BUFFER_TIMESTAMP (bufin) < monoscope->next_time || samples_in < 1024) {
|
||||
GST_DEBUG ("timestamp is %" G_GUINT64_FORMAT ": want >= %" G_GUINT64_FORMAT,
|
||||
GST_BUFFER_TIMESTAMP (bufin), monoscope->next_time);
|
||||
gst_buffer_unref (bufin);
|
||||
gst_object_unref (monoscope);
|
||||
return;
|
||||
}
|
||||
|
||||
data = (gint16 *) GST_BUFFER_DATA (bufin);
|
||||
/* FIXME: Select samples in a better way. */
|
||||
for (i = 0; i < 512; i++) {
|
||||
monoscope->datain[i] = *data++;
|
||||
}
|
||||
|
||||
if (monoscope->first_buffer) {
|
||||
monoscope->visstate = monoscope_init (monoscope->width, monoscope->height);
|
||||
g_assert (monoscope->visstate != 0);
|
||||
GST_DEBUG ("making new pad");
|
||||
if (!gst_pad_is_negotiated (monoscope->srcpad)) {
|
||||
if (gst_pad_renegotiate (monoscope->srcpad) <= 0) {
|
||||
GST_ELEMENT_ERROR (monoscope, CORE, NEGOTIATION, (NULL), (NULL));
|
||||
gst_object_unref (monoscope);
|
||||
return;
|
||||
}
|
||||
res = gst_pad_push_event (monoscope->srcpad, event);
|
||||
break;
|
||||
}
|
||||
monoscope->first_buffer = FALSE;
|
||||
default:
|
||||
res = gst_pad_push_event (monoscope->srcpad, event);
|
||||
break;
|
||||
}
|
||||
|
||||
bufout = gst_buffer_new ();
|
||||
GST_BUFFER_SIZE (bufout) = monoscope->width * monoscope->height * 4;
|
||||
GST_BUFFER_DATA (bufout) =
|
||||
(guchar *) monoscope_update (monoscope->visstate, monoscope->datain);
|
||||
GST_BUFFER_TIMESTAMP (bufout) = monoscope->next_time;
|
||||
GST_BUFFER_FLAG_SET (bufout, GST_BUFFER_DONTFREE);
|
||||
|
||||
monoscope->next_time += GST_SECOND / monoscope->fps;
|
||||
|
||||
gst_pad_push (monoscope->srcpad, GST_DATA (bufout));
|
||||
|
||||
gst_buffer_unref (bufin);
|
||||
gst_object_unref (monoscope);
|
||||
|
||||
GST_DEBUG ("Monoscope: exiting chainfunc");
|
||||
return res;
|
||||
}
|
||||
|
||||
static gboolean
|
||||
gst_monoscope_src_event (GstPad * pad, GstEvent * event)
|
||||
{
|
||||
GstMonoscope *monoscope;
|
||||
gboolean res;
|
||||
|
||||
monoscope = GST_MONOSCOPE (gst_pad_get_parent (pad));
|
||||
|
||||
switch (GST_EVENT_TYPE (event)) {
|
||||
case GST_EVENT_QOS:{
|
||||
gdouble proportion;
|
||||
GstClockTimeDiff diff;
|
||||
GstClockTime timestamp;
|
||||
|
||||
gst_event_parse_qos (event, &proportion, &diff, ×tamp);
|
||||
|
||||
/* save stuff for the _chain() function */
|
||||
GST_OBJECT_LOCK (monoscope);
|
||||
monoscope->proportion = proportion;
|
||||
if (diff >= 0)
|
||||
/* we're late, this is a good estimate for next displayable
|
||||
* frame (see part-qos.txt) */
|
||||
monoscope->earliest_time =
|
||||
timestamp + 2 * diff + monoscope->frame_duration;
|
||||
else
|
||||
monoscope->earliest_time = timestamp + diff;
|
||||
GST_OBJECT_UNLOCK (monoscope);
|
||||
|
||||
res = gst_pad_push_event (monoscope->sinkpad, event);
|
||||
break;
|
||||
}
|
||||
default:
|
||||
res = gst_pad_push_event (monoscope->sinkpad, event);
|
||||
break;
|
||||
}
|
||||
gst_object_unref (monoscope);
|
||||
|
||||
return res;
|
||||
}
|
||||
|
||||
static GstStateChangeReturn
|
||||
gst_monoscope_change_state (GstElement * element, GstStateChange transition)
|
||||
{
|
||||
GstMonoscope *monoscope = GST_MONOSCOPE (element);
|
||||
GstStateChangeReturn ret;
|
||||
|
||||
|
||||
switch (transition) {
|
||||
case GST_STATE_CHANGE_NULL_TO_READY:
|
||||
break;
|
||||
case GST_STATE_CHANGE_READY_TO_PAUSED:
|
||||
gst_monoscope_reset (monoscope);
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
|
||||
|
||||
switch (transition) {
|
||||
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
||||
break;
|
||||
case GST_STATE_CHANGE_READY_TO_NULL:
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static gboolean
|
||||
plugin_init (GstPlugin * plugin)
|
||||
{
|
||||
GST_DEBUG_CATEGORY_INIT (monoscope_debug, "monoscope", 0,
|
||||
"monoscope element");
|
||||
|
||||
return gst_element_register (plugin, "monoscope",
|
||||
GST_RANK_NONE, GST_TYPE_MONOSCOPE);
|
||||
}
|
||||
|
|
|
|||
80
gst/monoscope/gstmonoscope.h
Normal file
80
gst/monoscope/gstmonoscope.h
Normal file
|
|
@ -0,0 +1,80 @@
|
|||
/* GStreamer monoscope visualisation element
|
||||
* Copyright (C) <2002> Richard Boulton <richard@tartarus.org>
|
||||
* Copyright (C) <2006> Tim-Philipp Müller <tim centricular net>
|
||||
* Copyright (C) <2006> Wim Taymans <wim at fluendo dot com>
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
|
||||
#ifndef __GST_MONOSCOPE__
|
||||
#define __GST_MONOSCOPE__
|
||||
|
||||
G_BEGIN_DECLS
|
||||
|
||||
#include <gst/gst.h>
|
||||
#include <gst/base/gstadapter.h>
|
||||
|
||||
#define GST_TYPE_MONOSCOPE (gst_monoscope_get_type())
|
||||
#define GST_MONOSCOPE(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_MONOSCOPE,GstMonoscope))
|
||||
#define GST_MONOSCOPE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_MONOSCOPE,GstMonoscopeClass))
|
||||
#define GST_IS_MONOSCOPE(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_MONOSCOPE))
|
||||
#define GST_IS_MONOSCOPE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_MONOSCOPE))
|
||||
|
||||
typedef struct _GstMonoscope GstMonoscope;
|
||||
typedef struct _GstMonoscopeClass GstMonoscopeClass;
|
||||
|
||||
struct _GstMonoscope
|
||||
{
|
||||
GstElement element;
|
||||
|
||||
/* pads */
|
||||
GstPad *sinkpad;
|
||||
GstPad *srcpad;
|
||||
|
||||
GstAdapter *adapter;
|
||||
|
||||
guint64 next_ts; /* expected timestamp of the next frame */
|
||||
guint64 frame_duration; /* video frame duration */
|
||||
gint rate; /* sample rate */
|
||||
guint bps; /* bytes per sample */
|
||||
guint spf; /* samples per video frame */
|
||||
|
||||
GstSegment segment;
|
||||
|
||||
/* QoS stuff *//* with LOCK */
|
||||
gdouble proportion;
|
||||
GstClockTime earliest_time;
|
||||
|
||||
/* video state */
|
||||
gint fps_num;
|
||||
gint fps_denom;
|
||||
gint width;
|
||||
gint height;
|
||||
guint outsize;
|
||||
|
||||
/* visualisation state */
|
||||
struct monoscope_state *visstate;
|
||||
};
|
||||
|
||||
struct _GstMonoscopeClass
|
||||
{
|
||||
GstElementClass parent_class;
|
||||
};
|
||||
|
||||
G_END_DECLS
|
||||
|
||||
#endif /* __GST_MONOSCOPE__ */
|
||||
|
||||
Loading…
Reference in a new issue