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/* gstgoom.c: implementation of goom drawing element
* Copyright (C) <2001> Richard Boulton <richard@tartarus.org>
* (C) <2006> Wim Taymans <wim at fluendo dot com>
* (C) <2011> Wim Taymans <wim.taymans at gmail dot com>
* (C) <2015> Luis de Bethencourt <luis@debethencourt.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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/**
* SECTION:element-goom
* @see_also: synaesthesia
*
* Goom is an audio visualisation element. It creates warping structures
* based on the incoming audio signal.
*
* <refsect2>
* <title>Example launch line</title>
* |[
* gst-launch-1.0 -v audiotestsrc ! goom ! videoconvert ! xvimagesink
* ]|
* </refsect2>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
#include "gstgoom.h"
#include "goom.h"
#if HAVE_ORC
#include <orc/orc.h>
#endif
GST_DEBUG_CATEGORY (goom_debug);
#define GST_CAT_DEFAULT goom_debug
#define DEFAULT_WIDTH 320
#define DEFAULT_HEIGHT 240
/* signals and args */
enum
{
/* FILL ME */
LAST_SIGNAL
};
enum
{
ARG_0
/* FILL ME */
};
static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
#if G_BYTE_ORDER == G_BIG_ENDIAN
GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("xRGB"))
#else
GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("BGRx"))
#endif
);
static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink", /* the name of the pads */
GST_PAD_SINK, /* type of the pad */
GST_PAD_ALWAYS, /* ALWAYS/SOMETIMES */
GST_STATIC_CAPS ("audio/x-raw, "
"format = (string) " GST_AUDIO_NE (S16) ", "
"rate = (int) [ 8000, 96000 ], "
"channels = (int) 1, "
"layout = (string) interleaved; "
"audio/x-raw, "
"format = (string) " GST_AUDIO_NE (S16) ", "
"rate = (int) [ 8000, 96000 ], "
"channels = (int) 2, "
"channel-mask = (bitmask) 0x3, " "layout = (string) interleaved")
);
static void gst_goom_finalize (GObject * object);
static gboolean gst_goom_setup (GstAudioVisualizer * base);
static gboolean gst_goom_render (GstAudioVisualizer * base, GstBuffer * audio,
GstVideoFrame * video);
G_DEFINE_TYPE (GstGoom, gst_goom, GST_TYPE_AUDIO_VISUALIZER);
static void
gst_goom_class_init (GstGoomClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
GstAudioVisualizerClass *visualizer_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
visualizer_class = (GstAudioVisualizerClass *) klass;
gobject_class->finalize = gst_goom_finalize;
gst_element_class_set_static_metadata (gstelement_class, "GOOM: what a GOOM!",
"Visualization",
"Takes frames of data and outputs video frames using the GOOM filter",
"Wim Taymans <wim@fluendo.com>");
gst_element_class_add_pad_template (gstelement_class,
gst_static_pad_template_get (&sink_template));
gst_element_class_add_pad_template (gstelement_class,
gst_static_pad_template_get (&src_template));
visualizer_class->setup = GST_DEBUG_FUNCPTR (gst_goom_setup);
visualizer_class->render = GST_DEBUG_FUNCPTR (gst_goom_render);
}
static void
gst_goom_init (GstGoom * goom)
{
goom->width = DEFAULT_WIDTH;
goom->height = DEFAULT_HEIGHT;
goom->channels = 0;
goom->plugin = goom_init (goom->width, goom->height);
}
static void
gst_goom_finalize (GObject * object)
{
GstGoom *goom = GST_GOOM (object);
goom_close (goom->plugin);
goom->plugin = NULL;
G_OBJECT_CLASS (gst_goom_parent_class)->finalize (object);
}
static gboolean
gst_goom_setup (GstAudioVisualizer * base)
{
GstGoom *goom = GST_GOOM (base);
goom->width = GST_VIDEO_INFO_WIDTH (&base->vinfo);
goom->height = GST_VIDEO_INFO_HEIGHT (&base->vinfo);
return TRUE;
}
static gboolean
gst_goom_render (GstAudioVisualizer * base, GstBuffer * audio,
GstVideoFrame * video)
{
GstGoom *goom = GST_GOOM (base);
GstMapInfo amap;
gint16 datain[2][GOOM_SAMPLES];
gint16 *adata;
gint i;
/* get next GOOM_SAMPLES, we have at least this amount of samples */
gst_buffer_map (audio, &amap, GST_MAP_READ);
adata = (gint16 *) amap.data;
if (goom->channels == 2) {
for (i = 0; i < GOOM_SAMPLES; i++) {
datain[0][i] = *adata++;
datain[1][i] = *adata++;
}
} else {
for (i = 0; i < GOOM_SAMPLES; i++) {
datain[0][i] = *adata;
datain[1][i] = *adata++;
}
}
video->data[0] = goom_update (goom->plugin, datain, 0, 0);
gst_buffer_unmap (audio, &amap);
return TRUE;
}
static gboolean
plugin_init (GstPlugin * plugin)
{
GST_DEBUG_CATEGORY_INIT (goom_debug, "goom", 0, "goom visualisation element");
#if HAVE_ORC
orc_init ();
#endif
return gst_element_register (plugin, "goom", GST_RANK_NONE, GST_TYPE_GOOM);
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
goom,
"GOOM visualization filter",
plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)
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