/* GStreamer * Copyright (C) <1999> Erik Walthinsen * * 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. */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include #include "gstsmoothwave.h" static GstElementDetails gst_smoothwave_details = GST_ELEMENT_DETAILS ( "Smooth waveform", "Visualization", "Fading grayscale waveform display", "Erik Walthinsen " ); /* SmoothWave signals and args */ enum { /* FILL ME */ LAST_SIGNAL }; enum { ARG_0, ARG_WIDTH, ARG_HEIGHT, ARG_WIDGET, }; static void gst_smoothwave_base_init (gpointer g_class); static void gst_smoothwave_class_init (GstSmoothWaveClass *klass); static void gst_smoothwave_init (GstSmoothWave *smoothwave); static void gst_smoothwave_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec); static void gst_smoothwave_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec); static void gst_smoothwave_chain (GstPad *pad, GstData *_data); static GstElementClass *parent_class = NULL; /*static guint gst_smoothwave_signals[LAST_SIGNAL] = { 0 }; */ GType gst_smoothwave_get_type (void) { static GType smoothwave_type = 0; if (!smoothwave_type) { static const GTypeInfo smoothwave_info = { sizeof(GstSmoothWaveClass), gst_smoothwave_base_init, NULL, (GClassInitFunc)gst_smoothwave_class_init, NULL, NULL, sizeof(GstSmoothWave), 0, (GInstanceInitFunc)gst_smoothwave_init, }; smoothwave_type = g_type_register_static(GST_TYPE_ELEMENT, "GstSmoothWave", &smoothwave_info, 0); } return smoothwave_type; } static void gst_smoothwave_base_init (gpointer g_class) { GstElementClass *element_class = GST_ELEMENT_CLASS (g_class); gst_element_class_set_details (element_class, &gst_smoothwave_details); } static void gst_smoothwave_class_init (GstSmoothWaveClass *klass) { GObjectClass *gobject_class; GstElementClass *gstelement_class; gobject_class = (GObjectClass*)klass; gstelement_class = (GstElementClass*)klass; parent_class = g_type_class_ref(GST_TYPE_ELEMENT); g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_WIDTH, g_param_spec_int("width","width","width", G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); /* CHECKME */ g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_HEIGHT, g_param_spec_int("height","height","height", G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); /* CHECKME */ g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_WIDGET, g_param_spec_object("widget","widget","widget", GTK_TYPE_WIDGET,G_PARAM_READABLE)); /* CHECKME! */ gobject_class->set_property = gst_smoothwave_set_property; gobject_class->get_property = gst_smoothwave_get_property; } static void gst_smoothwave_init (GstSmoothWave *smoothwave) { int i; guint32 palette[256]; smoothwave->sinkpad = gst_pad_new("sink",GST_PAD_SINK); gst_element_add_pad(GST_ELEMENT(smoothwave),smoothwave->sinkpad); gst_pad_set_chain_function(smoothwave->sinkpad,gst_smoothwave_chain); smoothwave->srcpad = gst_pad_new("src",GST_PAD_SRC); gst_element_add_pad(GST_ELEMENT(smoothwave),smoothwave->srcpad); /* smoothwave->meta = NULL; */ smoothwave->width = 512; smoothwave->height = 256; gdk_rgb_init(); /* gtk_widget_set_default_colormap (gdk_rgb_get_cmap()); */ /* gtk_widget_set_default_visual (gdk_rgb_get_visual()); */ /* GST_DEBUG ("creating palette"); */ for (i=0;i<256;i++) palette[i] = (i << 16) || (i << 8); /* GST_DEBUG ("creating cmap"); */ smoothwave->cmap = gdk_rgb_cmap_new(palette,256); /* GST_DEBUG ("created cmap"); */ /* gtk_widget_set_default_colormap (smoothwave->cmap); */ smoothwave->image = gtk_drawing_area_new(); gtk_drawing_area_size(GTK_DRAWING_AREA(smoothwave->image), smoothwave->width,smoothwave->height); gtk_widget_show(smoothwave->image); smoothwave->imagebuffer = g_malloc(smoothwave->width*smoothwave->height); memset(smoothwave->imagebuffer,0,smoothwave->width*smoothwave->height); } static void gst_smoothwave_chain (GstPad *pad, GstData *_data) { GstBuffer *buf = GST_BUFFER (_data); GstSmoothWave *smoothwave; gint16 *samples; gint samplecount,i; register guint32 *ptr; gint qheight; g_return_if_fail(pad != NULL); g_return_if_fail(GST_IS_PAD(pad)); g_return_if_fail(buf != NULL); /* g_return_if_fail(GST_IS_BUFFER(buf)); */ smoothwave = GST_SMOOTHWAVE(GST_OBJECT_PARENT (pad)); /* first deal with audio metadata */ #if 0 if (buf->meta) { if (smoothwave->meta != NULL) { /* FIXME: need to unref the old metadata so it goes away */ } /* we just make a copy of the pointer */ smoothwave->meta = (MetaAudioRaw *)(buf->meta); /* FIXME: now we have to ref the metadata so it doesn't go away */ } #endif /* g_return_if_fail(smoothwave->meta != NULL); */ samples = (gint16 *)GST_BUFFER_DATA(buf); /* samplecount = buf->datasize / (smoothwave->meta->channels * sizeof(gint16)); */ samplecount = GST_BUFFER_SIZE(buf) / (2 * sizeof(gint16)); qheight = smoothwave->height/4; /* GST_DEBUG ("traversing %d",smoothwave->width); */ for (i=0;iwidth,samplecount);i++) { gint16 y1 = (gint32)(samples[i*2] * qheight) / 32768 + qheight; gint16 y2 = (gint32)(samples[(i*2)+1] * qheight) / 32768 + (qheight*3); smoothwave->imagebuffer[y1*smoothwave->width + i] = 0xff; smoothwave->imagebuffer[y2*smoothwave->width + i] = 0xff; /* smoothwave->imagebuffer[i+(smoothwave->width*5)] = i; */ } ptr = (guint32 *)smoothwave->imagebuffer; for (i=0;i<(smoothwave->width*smoothwave->height)/4;i++) { if (*ptr){ *ptr -= ((*ptr & 0xf0f0f0f0ul) >> 4) + ((*ptr & 0xe0e0e0e0ul) >> 5); ptr++; }else{ ptr++; } } /* GST_DEBUG ("drawing"); */ /* GST_DEBUG ("gdk_draw_indexed_image(%p,%p,%d,%d,%d,%d,%s,%p,%d,%p);", smoothwave->image->window, smoothwave->image->style->fg_gc[GTK_STATE_NORMAL], 0,0,smoothwave->width,smoothwave->height, "GDK_RGB_DITHER_NORMAL", smoothwave->imagebuffer,smoothwave->width, smoothwave->cmap);*/ /* gdk_draw_indexed_image(smoothwave->image->window, smoothwave->image->style->fg_gc[GTK_STATE_NORMAL], 0,0,smoothwave->width,smoothwave->height, GDK_RGB_DITHER_NONE, smoothwave->imagebuffer,smoothwave->width, smoothwave->cmap);*/ gdk_draw_gray_image(smoothwave->image->window, smoothwave->image->style->fg_gc[GTK_STATE_NORMAL], 0,0,smoothwave->width,smoothwave->height, GDK_RGB_DITHER_NORMAL, smoothwave->imagebuffer,smoothwave->width); /* gst_trace_add_entry(NULL,0,buf,"smoothwave: calculated smoothwave"); */ gst_buffer_unref(buf); } static void gst_smoothwave_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec) { GstSmoothWave *smoothwave; /* it's not null if we got it, but it might not be ours */ g_return_if_fail(GST_IS_SMOOTHWAVE(object)); smoothwave = GST_SMOOTHWAVE(object); switch (prop_id) { case ARG_WIDTH: smoothwave->width = g_value_get_int (value); gtk_drawing_area_size(GTK_DRAWING_AREA(smoothwave->image), smoothwave->width,smoothwave->height); gtk_widget_set_usize(GTK_WIDGET(smoothwave->image), smoothwave->width,smoothwave->height); break; case ARG_HEIGHT: smoothwave->height = g_value_get_int (value); gtk_drawing_area_size(GTK_DRAWING_AREA(smoothwave->image), smoothwave->width,smoothwave->height); gtk_widget_set_usize(GTK_WIDGET(smoothwave->image), smoothwave->width,smoothwave->height); break; default: break; } } static void gst_smoothwave_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) { GstSmoothWave *smoothwave; /* it's not null if we got it, but it might not be ours */ smoothwave = GST_SMOOTHWAVE(object); switch (prop_id) { case ARG_WIDTH: { g_value_set_int (value, smoothwave->width); break; } case ARG_HEIGHT: { g_value_set_int (value, smoothwave->height); break; } case ARG_WIDGET: { g_value_set_object (value, smoothwave->image); break; } default: { G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } } static gboolean plugin_init (GstPlugin *plugin) { if (!gst_element_register (plugin, "smoothwave", GST_RANK_NONE, GST_TYPE_SMOOTHWAVE)) return FALSE; return TRUE; } GST_PLUGIN_DEFINE ( GST_VERSION_MAJOR, GST_VERSION_MINOR, "smoothwave", "Fading greyscale waveform display", plugin_init, VERSION, "LGPL", GST_PACKAGE, GST_ORIGIN)