debugspy: add new element
This element allows you to get information about buffers with bus messages. It provides the same kind of information as identity does through a notify signal on a string property, but in a more programmer-friendly way.
This commit is contained in:
Guillaume Emont
Sebastian Dröge
parent
d8fd874f52
commit
555959a852
@ -15,6 +15,7 @@ EXTRA_DIST = debugutils-marshal.list
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plugin_LTLIBRARIES = libgstdebugutilsbad.la
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plugin_LTLIBRARIES = libgstdebugutilsbad.la
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libgstdebugutilsbad_la_SOURCES = \
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libgstdebugutilsbad_la_SOURCES = \
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gstdebugspy.c \
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fpsdisplaysink.c \
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fpsdisplaysink.c \
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debugutilsbad.c \
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debugutilsbad.c \
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gstchecksumsink.c \
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gstchecksumsink.c \
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@ -26,6 +26,7 @@
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GType gst_checksum_sink_get_type (void);
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GType gst_checksum_sink_get_type (void);
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GType fps_display_sink_get_type (void);
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GType fps_display_sink_get_type (void);
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GType gst_chop_my_data_get_type (void);
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GType gst_chop_my_data_get_type (void);
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GType gst_debug_spy_get_type (void);
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static gboolean
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static gboolean
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plugin_init (GstPlugin * plugin)
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plugin_init (GstPlugin * plugin)
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@ -36,6 +37,8 @@ plugin_init (GstPlugin * plugin)
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fps_display_sink_get_type ());
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fps_display_sink_get_type ());
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gst_element_register (plugin, "chopmydata", GST_RANK_NONE,
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gst_element_register (plugin, "chopmydata", GST_RANK_NONE,
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gst_chop_my_data_get_type ());
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gst_chop_my_data_get_type ());
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gst_element_register (plugin, "debugspy", GST_RANK_NONE,
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gst_debug_spy_get_type ());
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return TRUE;
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return TRUE;
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}
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}
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238
gst/debugutils/gstdebugspy.c
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238
gst/debugutils/gstdebugspy.c
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@ -0,0 +1,238 @@
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/*
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* GStreamer
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* Copyright (C) 2005 Thomas Vander Stichele <thomas@apestaart.org>
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* Copyright (C) 2005 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
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* Copyright (C) 2011 Igalia S.L.
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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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/**
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* SECTION:element-debugspy
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*
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* A spy element that can provide information on buffers going through it, with
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* bus messages.
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*
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* <refsect2>
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* <title>Example launch line</title>
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* |[
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* gst-launch -m videotestsrc ! debugspy ! fakesink
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* ]|
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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 "gstdebugspy.h"
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GST_DEBUG_CATEGORY_STATIC (gst_debug_spy_debug);
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#define GST_CAT_DEFAULT gst_debug_spy_debug
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/* Filter 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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PROP_0,
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PROP_SILENT,
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PROP_CHECKSUM_TYPE
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};
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/* create a GType for GChecksumType */
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#define GST_DEBUG_SPY_CHECKSUM_TYPE (gst_debug_spy_checksum_get_type())
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static GType
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gst_debug_spy_checksum_get_type (void)
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{
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static GType checksum_type = 0;
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static const GEnumValue checksum_values[] = {
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{G_CHECKSUM_MD5, "Use the MD5 hashing algorithm", "md5"},
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{G_CHECKSUM_SHA1, "Use the SHA-1 hashing algorithm", "sha1"},
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{G_CHECKSUM_SHA256, "Use the SHA-256 hashing algorithm", "sha256"},
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{0, NULL, NULL}
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};
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if (!checksum_type)
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checksum_type = g_enum_register_static ("GChecksumType", checksum_values);
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return checksum_type;
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}
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/* the capabilities of the inputs and outputs.
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*
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* describe the real formats here.
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*/
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static GstStaticPadTemplate sink_factory = 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 ("ANY")
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);
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static GstStaticPadTemplate src_factory = 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 ("ANY")
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);
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GST_BOILERPLATE (GstDebugSpy, gst_debug_spy, GstBaseTransform,
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GST_TYPE_BASE_TRANSFORM);
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static void gst_debug_spy_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_debug_spy_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static GstFlowReturn gst_debug_spy_transform_ip (GstBaseTransform * transform,
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GstBuffer * buf);
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/* GObject vmethod implementations */
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static void
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gst_debug_spy_base_init (gpointer gclass)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (gclass);
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GST_DEBUG_CATEGORY_INIT (gst_debug_spy_debug, "debugspy", 0, "debugspy");
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gst_element_class_set_details_simple (element_class,
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"DebugSpy",
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"Filter/Analyzer/Debug",
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"DebugSpy provides information on buffers with bus messages",
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"Guillaume Emont <gemont@igalia.com>");
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&src_factory));
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&sink_factory));
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}
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/* initialize the debugspy's class */
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static void
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gst_debug_spy_class_init (GstDebugSpyClass * klass)
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{
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GObjectClass *gobject_class;
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GstBaseTransformClass *base_transform_class;
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gobject_class = (GObjectClass *) klass;
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base_transform_class = (GstBaseTransformClass *) klass;
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gobject_class->set_property = gst_debug_spy_set_property;
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gobject_class->get_property = gst_debug_spy_get_property;
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base_transform_class->passthrough_on_same_caps = TRUE;
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base_transform_class->transform_ip = gst_debug_spy_transform_ip;
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g_object_class_install_property (gobject_class, PROP_SILENT,
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g_param_spec_boolean ("silent", "Silent", "Produce verbose output ?",
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FALSE, G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class, PROP_CHECKSUM_TYPE,
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g_param_spec_enum ("checksum-type", "Checksum TYpe",
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"Checksum algorithm to use", GST_DEBUG_SPY_CHECKSUM_TYPE,
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G_CHECKSUM_SHA1, G_PARAM_READWRITE));
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}
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/* initialize the new element
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* instantiate pads and add them to element
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* set pad calback functions
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* initialize instance structure
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*/
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static void
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gst_debug_spy_init (GstDebugSpy * debugspy, GstDebugSpyClass * gclass)
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{
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debugspy->silent = FALSE;
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debugspy->checksum_type = G_CHECKSUM_SHA1;
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}
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static void
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gst_debug_spy_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstDebugSpy *debugspy = GST_DEBUGSPY (object);
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switch (prop_id) {
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case PROP_SILENT:
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debugspy->silent = g_value_get_boolean (value);
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break;
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case PROP_CHECKSUM_TYPE:
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debugspy->checksum_type = g_value_get_enum (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gst_debug_spy_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec)
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{
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GstDebugSpy *debugspy = GST_DEBUGSPY (object);
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switch (prop_id) {
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case PROP_SILENT:
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g_value_set_boolean (value, debugspy->silent);
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break;
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case PROP_CHECKSUM_TYPE:
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g_value_set_enum (value, debugspy->checksum_type);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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/* GstBaseTransform vmethod implementations */
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static GstFlowReturn
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gst_debug_spy_transform_ip (GstBaseTransform * transform, GstBuffer * buf)
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{
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GstDebugSpy *debugspy = GST_DEBUGSPY (transform);
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if (debugspy->silent == FALSE) {
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gchar *checksum;
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GstMessage *message;
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GstStructure *message_structure;
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checksum = g_compute_checksum_for_data (debugspy->checksum_type,
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GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
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message_structure = gst_structure_new ("buffer",
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"checksum", G_TYPE_STRING, checksum,
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"timestamp", GST_TYPE_CLOCK_TIME, GST_BUFFER_TIMESTAMP (buf),
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"duration", GST_TYPE_CLOCK_TIME, GST_BUFFER_DURATION (buf),
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"offset", G_TYPE_UINT64, GST_BUFFER_OFFSET (buf),
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"offset_end", G_TYPE_UINT64, GST_BUFFER_OFFSET_END (buf),
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"size", G_TYPE_UINT, GST_BUFFER_SIZE (buf),
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"caps", GST_TYPE_CAPS, GST_BUFFER_CAPS (buf), NULL);
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message =
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gst_message_new_element (GST_OBJECT (transform), message_structure);
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gst_element_post_message (GST_ELEMENT (transform), message);
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}
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return GST_FLOW_OK;
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}
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63
gst/debugutils/gstdebugspy.h
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63
gst/debugutils/gstdebugspy.h
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@ -0,0 +1,63 @@
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/*
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* GStreamer
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* Copyright (C) 2005 Thomas Vander Stichele <thomas@apestaart.org>
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* Copyright (C) 2005 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
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* Copyright (C) 2011 Igalia S.L.
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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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#ifndef __GST_DEBUGSPY_H__
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#define __GST_DEBUGSPY_H__
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#include <gst/gst.h>
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#include <gst/base/gstbasetransform.h>
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G_BEGIN_DECLS
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/* #defines don't like whitespacey bits */
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#define GST_TYPE_DEBUGSPY \
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(gst_debug_spy_get_type())
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#define GST_DEBUGSPY(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_DEBUGSPY,GstDebugSpy))
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#define GST_DEBUGSPY_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_DEBUGSPY,GstDebugSpyClass))
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#define GST_IS_DEBUGSPY(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_DEBUGSPY))
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#define GST_IS_DEBUGSPY_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_DEBUGSPY))
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typedef struct _GstDebugSpy GstDebugSpy;
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typedef struct _GstDebugSpyClass GstDebugSpyClass;
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struct _GstDebugSpy
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{
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GstBaseTransform transform;
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gboolean silent;
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GChecksumType checksum_type;
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};
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struct _GstDebugSpyClass
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{
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GstBaseTransformClass parent_class;
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};
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GType gst_debug_spy_get_type (void);
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G_END_DECLS
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#endif /* __GST_DEBUGSPY_H__ */
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