/* * GStreamer * Copyright (C) 2005 Thomas Vander Stichele <thomas@apestaart.org> * Copyright (C) 2005 Ronald S. Bultje <rbultje@ronald.bitfreak.net> * Copyright (C) 2011 Igalia S.L. * * 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., 51 Franklin St, Fifth Floor, * Boston, MA 02110-1301, USA. */ /** * SECTION:element-debugspy * @title: debugspy * * A spy element that can provide information on buffers going through it, with * bus messages. * * ## Example launch line * |[ * gst-launch-1.0 -m videotestsrc ! debugspy ! fakesink * ]| * */ #ifdef HAVE_CONFIG_H # include <config.h> #endif #include <gst/gst.h> #include "gstdebugspy.h" GST_DEBUG_CATEGORY_STATIC (gst_debug_spy_debug); #define GST_CAT_DEFAULT gst_debug_spy_debug /* Filter signals and args */ enum { /* FILL ME */ LAST_SIGNAL }; enum { PROP_0, PROP_SILENT, PROP_CHECKSUM_TYPE }; /* create a GType for GChecksumType */ #define GST_DEBUG_SPY_CHECKSUM_TYPE (gst_debug_spy_checksum_get_type()) static GType gst_debug_spy_checksum_get_type (void) { static GType checksum_type = 0; static const GEnumValue checksum_values[] = { {G_CHECKSUM_MD5, "Use the MD5 hashing algorithm", "md5"}, {G_CHECKSUM_SHA1, "Use the SHA-1 hashing algorithm", "sha1"}, {G_CHECKSUM_SHA256, "Use the SHA-256 hashing algorithm", "sha256"}, {0, NULL, NULL} }; if (!checksum_type) checksum_type = g_enum_register_static ("GChecksumType", checksum_values); return checksum_type; } /* the capabilities of the inputs and outputs. * * describe the real formats here. */ static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink", GST_PAD_SINK, GST_PAD_ALWAYS, GST_STATIC_CAPS ("ANY") ); static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src", GST_PAD_SRC, GST_PAD_ALWAYS, GST_STATIC_CAPS ("ANY") ); G_DEFINE_TYPE (GstDebugSpy, gst_debug_spy, GST_TYPE_BASE_TRANSFORM); static void gst_debug_spy_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec); static void gst_debug_spy_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec); static GstFlowReturn gst_debug_spy_transform_ip (GstBaseTransform * transform, GstBuffer * buf); /* GObject vmethod implementations */ /* initialize the debugspy's class */ static void gst_debug_spy_class_init (GstDebugSpyClass * klass) { GObjectClass *gobject_class; GstElementClass *element_class; GstBaseTransformClass *base_transform_class; gobject_class = (GObjectClass *) klass; element_class = (GstElementClass *) klass; base_transform_class = (GstBaseTransformClass *) klass; gobject_class->set_property = gst_debug_spy_set_property; gobject_class->get_property = gst_debug_spy_get_property; base_transform_class->passthrough_on_same_caps = TRUE; base_transform_class->transform_ip = gst_debug_spy_transform_ip; g_object_class_install_property (gobject_class, PROP_SILENT, g_param_spec_boolean ("silent", "Silent", "Produce verbose output ?", FALSE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_CHECKSUM_TYPE, g_param_spec_enum ("checksum-type", "Checksum TYpe", "Checksum algorithm to use", GST_DEBUG_SPY_CHECKSUM_TYPE, G_CHECKSUM_SHA1, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); gst_element_class_set_static_metadata (element_class, "DebugSpy", "Filter/Analyzer/Debug", "DebugSpy provides information on buffers with bus messages", "Guillaume Emont <gemont@igalia.com>"); gst_element_class_add_static_pad_template (element_class, &src_factory); gst_element_class_add_static_pad_template (element_class, &sink_factory); GST_DEBUG_CATEGORY_INIT (gst_debug_spy_debug, "debugspy", 0, "debugspy"); } /* initialize the new element * instantiate pads and add them to element * set pad callback functions * initialize instance structure */ static void gst_debug_spy_init (GstDebugSpy * debugspy) { debugspy->silent = FALSE; debugspy->checksum_type = G_CHECKSUM_SHA1; } static void gst_debug_spy_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec) { GstDebugSpy *debugspy = GST_DEBUGSPY (object); switch (prop_id) { case PROP_SILENT: debugspy->silent = g_value_get_boolean (value); break; case PROP_CHECKSUM_TYPE: debugspy->checksum_type = g_value_get_enum (value); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gst_debug_spy_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec) { GstDebugSpy *debugspy = GST_DEBUGSPY (object); switch (prop_id) { case PROP_SILENT: g_value_set_boolean (value, debugspy->silent); break; case PROP_CHECKSUM_TYPE: g_value_set_enum (value, debugspy->checksum_type); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } /* GstBaseTransform vmethod implementations */ static GstFlowReturn gst_debug_spy_transform_ip (GstBaseTransform * transform, GstBuffer * buf) { GstDebugSpy *debugspy = GST_DEBUGSPY (transform); if (debugspy->silent == FALSE) { gchar *checksum; GstMessage *message; GstStructure *message_structure; GstMapInfo map; GstCaps *caps; gst_buffer_map (buf, &map, GST_MAP_READ); checksum = g_compute_checksum_for_data (debugspy->checksum_type, map.data, map.size); caps = gst_pad_get_current_caps (GST_BASE_TRANSFORM_SRC_PAD (transform)); message_structure = gst_structure_new ("buffer", "checksum", G_TYPE_STRING, checksum, "timestamp", GST_TYPE_CLOCK_TIME, GST_BUFFER_TIMESTAMP (buf), "duration", GST_TYPE_CLOCK_TIME, GST_BUFFER_DURATION (buf), "offset", G_TYPE_UINT64, GST_BUFFER_OFFSET (buf), "offset_end", G_TYPE_UINT64, GST_BUFFER_OFFSET_END (buf), "size", G_TYPE_UINT, map.size, "caps", GST_TYPE_CAPS, caps, NULL); if (caps) gst_caps_unref (caps); g_free (checksum); gst_buffer_unmap (buf, &map); message = gst_message_new_element (GST_OBJECT (transform), message_structure); gst_element_post_message (GST_ELEMENT (transform), message); } return GST_FLOW_OK; }