--- /dev/null
+/* vim:si:et:sw=2:sts=2:ts=8
+ *
+ * GStreamer
+ *
+ * gstchromaprint.c
+ *
+ * Copyright (C) 2006 M. Derezynski
+ * Copyright (C) 2008 Eric Buehl
+ * Copyright (C) 2008 Sebastian Dröge <slomo@circular-chaos.org>
+ * Copyright (C) 2011 Lukáš Lalinský <lalinsky@gmail.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.
+ */
+
+/**
+ * SECTION:element-chromaprint
+ *
+ * FIXME:Describe chromaprint here.
+ *
+ * <refsect2>
+ * <title>Example launch line</title>
+ * |[
+ * gst-launch -v -m fakesrc ! chromaprint ! fakesink silent=TRUE
+ * filesrc location=<file> ! decodebin ! audioconvert ! chromaprint ! fakesink sync=0 silent=TRUE
+ * ]|
+ * </refsect2>
+ */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <gst/gst.h>
+#include <chromaprint.h>
+
+#include "gstchromaprint.h"
+
+#define DEFAULT_MAX_DURATION 120
+
+#define PAD_CAPS \
+ "audio/x-raw-int, " \
+ "rate = (int) [ 1, MAX ], " \
+ "channels = (int) [ 1, 2 ], " \
+ "endianness = (int) { BYTE_ORDER }, " \
+ "width = (int) { 16 }, " \
+ "depth = (int) { 16 }, " \
+ "signed = (boolean) true"
+
+GST_DEBUG_CATEGORY_STATIC (gst_chromaprint_debug);
+#define GST_CAT_DEFAULT gst_chromaprint_debug
+
+enum
+{
+ PROP_0,
+ PROP_FINGERPRINT,
+ PROP_MAX_DURATION
+};
+
+
+GST_BOILERPLATE (GstChromaprint, gst_chromaprint, GstElement,
+ GST_TYPE_AUDIO_FILTER);
+
+static void gst_chromaprint_finalize (GObject * object);
+static void gst_chromaprint_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec);
+static void gst_chromaprint_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec);
+static GstFlowReturn gst_chromaprint_transform_ip (GstBaseTransform * trans,
+ GstBuffer * buf);
+static gboolean gst_chromaprint_event (GstBaseTransform * trans,
+ GstEvent * event);
+
+/* GObject vmethod implementations */
+
+static void
+gst_chromaprint_base_init (gpointer g_class)
+{
+ GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
+ GstAudioFilterClass *audio_filter_class = (GstAudioFilterClass *) g_class;
+ GstCaps *caps;
+
+ gst_element_class_set_details_simple (element_class,
+ "Chromaprint",
+ "Chromaprint fingerprinting element",
+ "Find an audio fingerprint using the Chromaprint library",
+ "Lukáš Lalinský <lalinsky@gmail.com>");
+
+ caps = gst_caps_from_string (PAD_CAPS);
+ gst_audio_filter_class_add_pad_templates (audio_filter_class, caps);
+ gst_caps_unref (caps);
+}
+
+static void
+gst_chromaprint_class_init (GstChromaprintClass * klass)
+{
+ GObjectClass *gobject_class;
+ GstBaseTransformClass *gstbasetrans_class;
+
+ gobject_class = G_OBJECT_CLASS (klass);
+ gstbasetrans_class = GST_BASE_TRANSFORM_CLASS (klass);
+
+ gobject_class->set_property =
+ GST_DEBUG_FUNCPTR (gst_chromaprint_set_property);
+ gobject_class->get_property =
+ GST_DEBUG_FUNCPTR (gst_chromaprint_get_property);
+
+ g_object_class_install_property (gobject_class, PROP_FINGERPRINT,
+ g_param_spec_string ("fingerprint", "Resulting fingerprint",
+ "Resulting fingerprint", NULL, G_PARAM_READABLE));
+
+ g_object_class_install_property (gobject_class, PROP_MAX_DURATION,
+ g_param_spec_uint ("duration", "Duration limit",
+ "Number of seconds of audio to use for fingerpriting",
+ 0, G_MAXUINT, DEFAULT_MAX_DURATION,
+ G_PARAM_READABLE | G_PARAM_WRITABLE));
+
+ gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_chromaprint_finalize);
+
+ gstbasetrans_class->transform_ip =
+ GST_DEBUG_FUNCPTR (gst_chromaprint_transform_ip);
+ gstbasetrans_class->event = GST_DEBUG_FUNCPTR (gst_chromaprint_event);
+ gstbasetrans_class->passthrough_on_same_caps = TRUE;
+}
+
+static void
+gst_chromaprint_reset (GstChromaprint * chromaprint)
+{
+ if (chromaprint->fingerprint) {
+ chromaprint_dealloc (chromaprint->fingerprint);
+ chromaprint->fingerprint = NULL;
+ }
+
+ chromaprint->nsamples = 0;
+ chromaprint->duration = 0;
+ chromaprint->record = TRUE;
+}
+
+static void
+gst_chromaprint_create_fingerprint (GstChromaprint * chromaprint)
+{
+ GstTagList *tags;
+
+ if (chromaprint->duration <= 3)
+ return;
+
+ GST_DEBUG ("Generating fingerprint based on %d seconds of audio",
+ chromaprint->duration);
+ chromaprint_finish (chromaprint->context);
+ chromaprint_get_fingerprint (chromaprint->context, &chromaprint->fingerprint);
+ chromaprint->record = FALSE;
+
+ tags = gst_tag_list_new ();
+ gst_tag_list_add (tags, GST_TAG_MERGE_REPLACE,
+ GST_TAG_CHROMAPRINT_FINGERPRINT, chromaprint->fingerprint, NULL);
+ gst_element_found_tags (GST_ELEMENT (chromaprint), tags);
+}
+
+static void
+gst_chromaprint_init (GstChromaprint * chromaprint,
+ GstChromaprintClass * gclass)
+{
+ gst_base_transform_set_passthrough (GST_BASE_TRANSFORM (chromaprint), TRUE);
+
+ chromaprint->context = chromaprint_new (CHROMAPRINT_ALGORITHM_DEFAULT);
+ chromaprint->fingerprint = NULL;
+ chromaprint->max_duration = DEFAULT_MAX_DURATION;
+ gst_chromaprint_reset (chromaprint);
+}
+
+static void
+gst_chromaprint_finalize (GObject * object)
+{
+ GstChromaprint *chromaprint = GST_CHROMAPRINT (object);
+
+ chromaprint->record = FALSE;
+
+ if (chromaprint->context) {
+ chromaprint_free (chromaprint->context);
+ chromaprint->context = NULL;
+ }
+
+ if (chromaprint->fingerprint) {
+ chromaprint_dealloc (chromaprint->fingerprint);
+ chromaprint->fingerprint = NULL;
+ }
+
+ G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+static GstFlowReturn
+gst_chromaprint_transform_ip (GstBaseTransform * trans, GstBuffer * buf)
+{
+ GstChromaprint *chromaprint = GST_CHROMAPRINT (trans);
+ guint nsamples;
+ gint rate = GST_AUDIO_FILTER (chromaprint)->format.rate;
+ gint channels = GST_AUDIO_FILTER (chromaprint)->format.channels;
+
+ g_return_val_if_fail (rate > 0 && channels > 0, GST_FLOW_NOT_NEGOTIATED);
+
+ if (!chromaprint->record)
+ return GST_FLOW_OK;
+
+ nsamples = GST_BUFFER_SIZE (buf) / (channels * 2);
+ if (!nsamples)
+ return GST_FLOW_OK;
+
+ if (!chromaprint->nsamples) {
+ chromaprint_start (chromaprint->context, rate, channels);
+ }
+ chromaprint->nsamples += nsamples;
+ chromaprint->duration = chromaprint->nsamples / rate;
+
+ chromaprint_feed (chromaprint->context, GST_BUFFER_DATA (buf),
+ GST_BUFFER_SIZE (buf) / 2);
+
+ if (chromaprint->duration >= chromaprint->max_duration
+ && !chromaprint->fingerprint) {
+ gst_chromaprint_create_fingerprint (chromaprint);
+ }
+
+ return GST_FLOW_OK;
+}
+
+static gboolean
+gst_chromaprint_event (GstBaseTransform * trans, GstEvent * event)
+{
+ GstChromaprint *chromaprint = GST_CHROMAPRINT (trans);
+
+ switch (GST_EVENT_TYPE (event)) {
+ case GST_EVENT_FLUSH_STOP:
+ case GST_EVENT_NEWSEGMENT:
+ GST_DEBUG ("Got %s event, clearing buffer", GST_EVENT_TYPE_NAME (event));
+ gst_chromaprint_reset (chromaprint);
+ break;
+ case GST_EVENT_EOS:
+ if (!chromaprint->fingerprint) {
+ gst_chromaprint_create_fingerprint (chromaprint);
+ }
+ break;
+ default:
+ break;
+ }
+
+ return TRUE;
+}
+
+static void
+gst_chromaprint_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec)
+{
+ GstChromaprint *chromaprint = GST_CHROMAPRINT (object);
+
+ switch (prop_id) {
+ case PROP_MAX_DURATION:
+ chromaprint->max_duration = g_value_get_uint (value);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+gst_chromaprint_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec)
+{
+ GstChromaprint *chromaprint = GST_CHROMAPRINT (object);
+
+ switch (prop_id) {
+ case PROP_FINGERPRINT:
+ g_value_set_string (value, chromaprint->fingerprint);
+ break;
+ case PROP_MAX_DURATION:
+ g_value_set_uint (value, chromaprint->max_duration);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+
+static gboolean
+plugin_init (GstPlugin * plugin)
+{
+ gboolean ret;
+
+ GST_DEBUG_CATEGORY_INIT (gst_chromaprint_debug, "chromaprint",
+ 0, "chromaprint element");
+
+ GST_DEBUG ("libchromaprint %s", chromaprint_get_version ());
+
+ ret = gst_element_register (plugin, "chromaprint", GST_RANK_NONE,
+ GST_TYPE_CHROMAPRINT);
+
+ if (ret) {
+ gst_tag_register (GST_TAG_CHROMAPRINT_FINGERPRINT, GST_TAG_FLAG_META,
+ G_TYPE_STRING, "chromaprint fingerprint", "Chromaprint fingerprint",
+ NULL);
+ }
+
+ return ret;
+}
+
+GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
+ GST_VERSION_MINOR,
+ "chromaprint",
+ "Calculate Chromaprint fingerprint from audio files",
+ plugin_init, VERSION, "LGPL", "GStreamer", "http://gstreamer.net/")
--- /dev/null
+/* vim:si:et:sw=2:sts=2:ts=8
+ *
+ * GStreamer
+ *
+ * gstchromaprint.h
+ *
+ * Copyright (C) 2006 M. Derezynski
+ * Copyright (C) 2008 Eric Buehl
+ * Copyright (C) 2008 Sebastian Dröge <slomo@circular-chaos.org>
+ * Copyright (C) 2011 Lukáš Lalinský <<user@hostname.org>>
+ *
+ * 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_CHROMAPRINT_H__
+#define __GST_CHROMAPRINT_H__
+
+#include <gst/gst.h>
+#include <gst/base/gstadapter.h>
+#include <gst/audio/gstaudiofilter.h>
+#include <gst/audio/audio.h>
+#include <chromaprint.h>
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_CHROMAPRINT \
+ (gst_chromaprint_get_type())
+#define GST_CHROMAPRINT(obj) \
+ (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_CHROMAPRINT,GstChromaprint))
+#define GST_CHROMAPRINT_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_CHROMAPRINT,GstChromaprintClass))
+#define GST_IS_CHROMAPRINT(obj) \
+ (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_CHROMAPRINT))
+#define GST_IS_CHROMAPRINT_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_CHROMAPRINT))
+
+#define GST_TAG_CHROMAPRINT_FINGERPRINT "chromaprint-fingerprint"
+
+typedef struct _GstChromaprint GstChromaprint;
+typedef struct _GstChromaprintClass GstChromaprintClass;
+
+/**
+ * GstChromaprint:
+ *
+ * Opaque #GstChromaprint data structure
+ */
+
+struct _GstChromaprint
+{
+ GstAudioFilter element;
+
+ /*< private > */
+
+ ChromaprintContext *context;
+ char *fingerprint;
+ gboolean record;
+ guint64 nsamples;
+ guint duration;
+ guint max_duration;
+};
+
+struct _GstChromaprintClass
+{
+ GstAudioFilterClass parent_class;
+};
+
+GType gst_chromaprint_get_type (void);
+
+G_END_DECLS
+
+#endif /* __GST_CHROMAPRINT_H__ */
projects / platform / upstream / gst-plugins-bad.git / commitdiff