/* gstgoom.c: implementation of goom drawing element * Copyright (C) <2001> Richard Boulton * (C) <2006> Wim Taymans * (C) <2015> Luis de Bethencourt * * 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-goom2k1 * @see_also: goom, synaesthesia * * Goom2k1 is an audio visualisation element. It creates warping structures * based on the incomming audio signal. Goom2k1 is the older version of the * visualisation. Also available is goom2k4, with a different look. * * * Example launch line * |[ * gst-launch-1.0 -v audiotestsrc ! goom2k1 ! videoconvert ! xvimagesink * ]| * */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include #include "gstgoom.h" #include "goom_core.h" GST_DEBUG_CATEGORY_STATIC (goom_debug); #define GST_CAT_DEFAULT goom_debug #define DEFAULT_WIDTH 320 #define DEFAULT_HEIGHT 240 #define DEFAULT_FPS_N 25 #define DEFAULT_FPS_D 1 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); typedef GstGoom GstGoom2k1; typedef GstGoomClass GstGoom2k1Class; G_DEFINE_TYPE (GstGoom2k1, 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! 2k1 edition", "Visualization", "Takes frames of data and outputs video frames using the GOOM 2k1 filter", "Wim Taymans "); 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)); GST_DEBUG_CATEGORY_INIT (goom_debug, "goom", 0, "goom visualisation element"); 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_init (&(goom->goomdata), goom->width, goom->height); } static void gst_goom_finalize (GObject * object) { GstGoom *goom = GST_GOOM (object); goom_close (&(goom->goomdata)); 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); goom_set_resolution (&(goom->goomdata), goom->width, goom->height); 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->goomdata), datain); gst_buffer_unmap (audio, &amap); return TRUE; } static gboolean plugin_init (GstPlugin * plugin) { return gst_element_register (plugin, "goom2k1", GST_RANK_NONE, GST_TYPE_GOOM); } GST_PLUGIN_DEFINE (GST_VERSION_MAJOR, GST_VERSION_MINOR, goom2k1, "GOOM 2k1 visualization filter", plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)