mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-11-27 12:11:13 +00:00
Code Issues 1 Projects Releases Wiki Activity

chromaprint: port to 0.11

Browse source
This commit is contained in:
Tim-Philipp Müller 2012-02-01 17:46:50 +00:00
parent b66e84040b
commit 4d0e83c48d
1 changed files with 42 additions and 41 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

83
ext/chromaprint/gstchromaprint.c
View file

@ -3,6 +3,7 @@
* Copyright (C) 2008 Eric Buehl
* Copyright (C) 2008 Sebastian Dröge <slomo@circular-chaos.org>
* Copyright (C) 2011 Lukáš Lalinský <lalinsky@gmail.com>
* Copyright (C) 2012 Collabora Ltd. <tim.muller@collabora.co.uk>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
@ -45,13 +46,10 @@
#define DEFAULT_MAX_DURATION 120
#define PAD_CAPS \
"audio/x-raw-int, " \
"audio/x-raw, " \
"format = (string) " GST_AUDIO_NE(S16) ", "\
"rate = (int) [ 1, MAX ], " \
"channels = (int) [ 1, 2 ], " \
"endianness = (int) { BYTE_ORDER }, " \
"width = (int) { 16 }, " \
"depth = (int) { 16 }, " \
"signed = (boolean) true"
"channels = (int) [ 1, 2 ]"
GST_DEBUG_CATEGORY_STATIC (gst_chromaprint_debug);
#define GST_CAT_DEFAULT gst_chromaprint_debug
@ -63,9 +61,8 @@ enum
PROP_MAX_DURATION
};
GST_BOILERPLATE (GstChromaprint, gst_chromaprint, GstElement,
GST_TYPE_AUDIO_FILTER);
#define parent_class gst_chromaprint_parent_class
G_DEFINE_TYPE (GstChromaprint, gst_chromaprint, GST_TYPE_AUDIO_FILTER);
static void gst_chromaprint_finalize (GObject * object);
static void gst_chromaprint_set_property (GObject * object, guint prop_id,
@ -74,32 +71,15 @@ 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,
static gboolean gst_chromaprint_sink_event (GstBaseTransform * trans,
GstEvent * event);
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 fingerprinting element",
"Filter/Analyzer/Audio",
"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;
GstCaps *caps;
gobject_class = G_OBJECT_CLASS (klass);
gstbasetrans_class = GST_BASE_TRANSFORM_CLASS (klass);
@ -122,8 +102,20 @@ gst_chromaprint_class_init (GstChromaprintClass * klass)
gstbasetrans_class->transform_ip =
GST_DEBUG_FUNCPTR (gst_chromaprint_transform_ip);
gstbasetrans_class->event = GST_DEBUG_FUNCPTR (gst_chromaprint_event);
gstbasetrans_class->sink_event =
GST_DEBUG_FUNCPTR (gst_chromaprint_sink_event);
gstbasetrans_class->passthrough_on_same_caps = TRUE;
gst_element_class_set_details_simple (GST_ELEMENT_CLASS (klass),
"Chromaprint fingerprinting element",
"Filter/Analyzer/Audio",
"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 (GST_AUDIO_FILTER_CLASS (klass),
caps);
gst_caps_unref (caps);
}
static void
@ -155,15 +147,15 @@ gst_chromaprint_create_fingerprint (GstChromaprint * chromaprint)
chromaprint_get_fingerprint (chromaprint->context, &chromaprint->fingerprint);
chromaprint->record = FALSE;
tags = gst_tag_list_new_full (GST_TAG_CHROMAPRINT_FINGERPRINT,
tags = gst_tag_list_new (GST_TAG_CHROMAPRINT_FINGERPRINT,
chromaprint->fingerprint, NULL);
gst_element_found_tags (GST_ELEMENT (chromaprint), tags);
gst_pad_push_event (GST_BASE_TRANSFORM_SRC_PAD (chromaprint),
gst_event_new_tag (tags));
}
static void
gst_chromaprint_init (GstChromaprint * chromaprint,
GstChromaprintClass * gclass)
gst_chromaprint_init (GstChromaprint * chromaprint)
{
gst_base_transform_set_passthrough (GST_BASE_TRANSFORM (chromaprint), TRUE);
@ -197,9 +189,13 @@ static GstFlowReturn
gst_chromaprint_transform_ip (GstBaseTransform * trans, GstBuffer * buf)
{
GstChromaprint *chromaprint = GST_CHROMAPRINT (trans);
gint rate = GST_AUDIO_FILTER (chromaprint)->format.rate;
gint channels = GST_AUDIO_FILTER (chromaprint)->format.channels;
GstAudioFilter *filter = GST_AUDIO_FILTER (trans);
GstMapInfo map_info;
guint nsamples;
gint rate, channels;
rate = GST_AUDIO_INFO_RATE (&filter->info);
channels = GST_AUDIO_INFO_CHANNELS (&filter->info);
if (G_UNLIKELY (rate <= 0 || channels <= 0))
return GST_FLOW_NOT_NEGOTIATED;
@ -207,7 +203,10 @@ gst_chromaprint_transform_ip (GstBaseTransform * trans, GstBuffer * buf)
if (!chromaprint->record)
return GST_FLOW_OK;
nsamples = GST_BUFFER_SIZE (buf) / (channels * 2);
if (!gst_buffer_map (buf, &map_info, GST_MAP_READ))
return GST_FLOW_ERROR;
nsamples = map_info.size / (channels * 2);
if (nsamples == 0)
return GST_FLOW_OK;
@ -218,25 +217,27 @@ gst_chromaprint_transform_ip (GstBaseTransform * trans, GstBuffer * buf)
chromaprint->nsamples += nsamples;
chromaprint->duration = chromaprint->nsamples / rate;
chromaprint_feed (chromaprint->context, GST_BUFFER_DATA (buf),
GST_BUFFER_SIZE (buf) / 2);
chromaprint_feed (chromaprint->context, map_info.data,
map_info.size / sizeof (guint16));
if (chromaprint->duration >= chromaprint->max_duration
&& !chromaprint->fingerprint) {
gst_chromaprint_create_fingerprint (chromaprint);
}
gst_buffer_unmap (buf, &map_info);
return GST_FLOW_OK;
}
static gboolean
gst_chromaprint_event (GstBaseTransform * trans, GstEvent * event)
gst_chromaprint_sink_event (GstBaseTransform * trans, GstEvent * event)
{
GstChromaprint *chromaprint = GST_CHROMAPRINT (trans);
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_FLUSH_STOP:
case GST_EVENT_NEWSEGMENT:
case GST_EVENT_SEGMENT:
GST_DEBUG_OBJECT (trans, "Got %s event, clearing buffer",
GST_EVENT_TYPE_NAME (event));
gst_chromaprint_reset (chromaprint);
@ -250,7 +251,7 @@ gst_chromaprint_event (GstBaseTransform * trans, GstEvent * event)
break;
}
return TRUE;
return GST_BASE_TRANSFORM_CLASS (parent_class)->sink_event (trans, event);
}
static void