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Initial port of the spectrum element
Original commit message from CVS: * configure.ac: * gst/spectrum/demo-osssrc.c: (spectrum_chain), (main): * gst/spectrum/fix_fft.c: (gst_spectrum_fix_dot): * gst/spectrum/gstspectrum.c: (gst_spectrum_get_type), (gst_spectrum_base_init), (gst_spectrum_class_init), (gst_spectrum_init), (gst_spectrum_dispose), (gst_spectrum_set_property), (gst_spectrum_chain): * gst/spectrum/gstspectrum.h: Initial port of the spectrum element
This commit is contained in:
parent
4e5f3fae24
commit
0428d5cf5f
6 changed files with 331 additions and 249 deletions
12
ChangeLog
12
ChangeLog
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@ -1,3 +1,15 @@
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2006-05-21 Stefan Kost <ensonic@users.sf.net>
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* configure.ac:
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* gst/spectrum/demo-osssrc.c: (spectrum_chain), (main):
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* gst/spectrum/fix_fft.c: (gst_spectrum_fix_dot):
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* gst/spectrum/gstspectrum.c: (gst_spectrum_get_type),
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(gst_spectrum_base_init), (gst_spectrum_class_init),
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(gst_spectrum_init), (gst_spectrum_dispose),
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(gst_spectrum_set_property), (gst_spectrum_chain):
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* gst/spectrum/gstspectrum.h:
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Initial port of the spectrum element
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2006-05-19 Edgard Lima <edgard.lima@indt.org.br>
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* sys/v4l2/gstv4l2.c:
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35
configure.ac
35
configure.ac
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@ -79,6 +79,7 @@ GST_PLUGINS_ALL="\
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cdxaparse \
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freeze \
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modplug \
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spectrum \
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speed \
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qtdemux \
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xingheader \
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@ -154,16 +155,41 @@ dnl uninstalled is selected preferentially -- see pkg-config(1)
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GST_CHECK_GST($GST_MAJORMINOR, [$GST_REQ])
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GST_CHECK_GST_BASE($GST_MAJORMINOR, [$GST_REQ])
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GST_CHECK_GST_CHECK($GST_MAJORMINOR, [$GST_REQ], no)
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GST_CHECK_GST_PLUGINS_BASE($GST_MAJORMINOR, [$GSTPB_REQ], no)
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GSTPB_PLUGINS_DIR=`$PKG_CONFIG gstreamer-plugins-base-$GST_MAJORMINOR --variable pluginsdir`
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AC_SUBST(GSTPB_PLUGINS_DIR)
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AC_MSG_NOTICE(Using GStreamer Base Plugins in $GSTPB_PLUGINS_DIR)
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dnl FIXME: get rid of this by making sure gstreamer-check brings it in
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dnl check for "check", unit testing library/header
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AM_PATH_CHECK(0.9.2, HAVE_CHECK=yes, HAVE_CHECK=no)
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AM_CONDITIONAL(HAVE_CHECK, test "x$HAVE_CHECK" = "xyes")
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GST_CHECK_GST_PLUGINS_BASE($GST_MAJORMINOR, [$GSTPB_REQ], no)
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GSTPB_PLUGINS_DIR=`$PKG_CONFIG gstreamer-plugins-base-$GST_MAJORMINOR --variable pluginsdir`
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AC_SUBST(GSTPB_PLUGINS_DIR)
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AC_MSG_NOTICE(Using GStreamer Base Plugins in $GSTPB_PLUGINS_DIR)
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dnl GTK is optional and used in examples
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HAVE_GTK=NO
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PKG_CHECK_MODULES(GTK2, gtk+-2.0 >= 2.2.0, HAVE_GTK_22=yes, HAVE_GTK_22=no)
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if test "x$HAVE_GTK_22" = "xyes"; then
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HAVE_GTK=yes
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GTK_VERSION=`$PKG_CONFIG --variable=gtk_binary_version gtk+-2.0`
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AC_SUBST(GTK_VERSION)
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GTK_PREFIX=`$PKG_CONFIG --variable=prefix gdk-pixbuf-2.0`
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AC_SUBST(GTK_BASE_DIR)
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GDK_PIXBUF_LIBDIR=`$PKG_CONFIG --variable=libdir gdk-pixbuf-2.0`
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GDK_PIXBUF_PREFIXDIR=`$PKG_CONFIG --variable=prefix gdk-pixbuf-2.0`
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AC_SUBST(GTK_BASE_DIR)
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else
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PKG_CHECK_MODULES(GTK2, gtk+-2.0, HAVE_GTK_20=yes, HAVE_GTK_20=no)
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fi
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if test "x$HAVE_GTK_20" = "xyes"; then
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HAVE_GTK=yes
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fi
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GTK_CFLAGS=$GTK2_CFLAGS
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GTK_LIBS=$GTK2_LIBS
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AC_SUBST(GTK_LIBS)
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AC_SUBST(GTK_CFLAGS)
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AC_SUBST(HAVE_GTK)
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AM_CONDITIONAL(HAVE_GTK, test "x$HAVE_GTK" = "xyes")
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dnl set license and copyright notice
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GST_LICENSE="LGPL"
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@ -679,6 +705,7 @@ gst/cdxaparse/Makefile
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gst/freeze/Makefile
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gst/modplug/Makefile
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gst/modplug/libmodplug/Makefile
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gst/spectrum/Makefile
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gst/speed/Makefile
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gst/qtdemux/Makefile
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gst/tta/Makefile
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@ -4,26 +4,26 @@
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#include <gst/gst.h>
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#include <gtk/gtk.h>
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extern gboolean _gst_plugin_spew;
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gboolean idle_func (gpointer data);
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#define DEFAULT_AUDIOSRC "alsasrc"
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#define SPECT_BANDS 256
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GtkWidget *drawingarea;
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void
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static void
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spectrum_chain (GstElement * sink, GstBuffer * buf, GstPad * pad,
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gpointer unused)
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{
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gint i;
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guchar *data = buf->data;
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GdkRectangle rect = { 0, 0, GST_BUFFER_SIZE (buf), 25 };
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gint width = GST_BUFFER_SIZE (buf);
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GdkRectangle rect = { 0, 0, width, 50 };
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gdk_window_begin_paint_rect (drawingarea->window, &rect);
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gdk_draw_rectangle (drawingarea->window, drawingarea->style->black_gc,
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TRUE, 0, 0, GST_BUFFER_SIZE (buf), 25);
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for (i = 0; i < GST_BUFFER_SIZE (buf); i++) {
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TRUE, 0, 0, width, 50);
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for (i = 0; i < width; i++) {
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gdk_draw_rectangle (drawingarea->window, drawingarea->style->white_gc,
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TRUE, i, 32 - data[i], 1, data[i]);
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TRUE, i, 64 - data[i], 1, data[i]);
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}
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gdk_window_end_paint (drawingarea->window);
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}
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@ -32,7 +32,7 @@ int
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main (int argc, char *argv[])
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{
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GstElement *bin;
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GstElement *src, *spectrum, *sink;
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GstElement *src, *conv, *spectrum, *sink;
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GtkWidget *appwindow;
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@ -42,34 +42,35 @@ main (int argc, char *argv[])
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bin = gst_pipeline_new ("bin");
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src = gst_element_factory_make (DEFAULT_AUDIOSRC, "src");
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g_object_set (G_OBJECT (src), "buffersize", (gulong) 1024, NULL);
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g_object_set (G_OBJECT (src), "blocksize", (gulong) 1024 * 2, NULL);
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conv = gst_element_factory_make ("audioconvert", "conv");
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spectrum = gst_element_factory_make ("spectrum", "spectrum");
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g_object_set (G_OBJECT (spectrum), "width", 256, NULL);
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g_object_set (G_OBJECT (spectrum), "width", SPECT_BANDS, NULL);
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sink = gst_element_factory_make ("fakesink", "sink");
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g_object_set (G_OBJECT (sink), "signal-handoffs", TRUE, NULL);
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g_signal_connect (sink, "handoff", G_CALLBACK (spectrum_chain), NULL);
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gst_bin_add_many (GST_BIN (bin), src, spectrum, sink, NULL);
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gst_element_link_many (src, spectrum, sink, NULL);
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gst_bin_add_many (GST_BIN (bin), src, conv, spectrum, sink, NULL);
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if (!gst_element_link_many (src, conv, spectrum, sink, NULL)) {
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fprintf (stderr, "cant link elements\n");
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exit (1);
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}
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appwindow = gtk_window_new (GTK_WINDOW_TOPLEVEL);
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drawingarea = gtk_drawing_area_new ();
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gtk_drawing_area_size (GTK_DRAWING_AREA (drawingarea), 256, 32);
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gtk_drawing_area_size (GTK_DRAWING_AREA (drawingarea), SPECT_BANDS, 64);
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gtk_container_add (GTK_CONTAINER (appwindow), drawingarea);
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gtk_widget_show_all (appwindow);
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gst_element_set_state (GST_ELEMENT (bin), GST_STATE_PLAYING);
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g_idle_add (idle_func, bin);
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gst_element_set_state (bin, GST_STATE_PLAYING);
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gtk_main ();
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gst_element_set_state (bin, GST_STATE_NULL);
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gst_object_unref (bin);
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return 0;
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}
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gboolean
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idle_func (gpointer data)
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{
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return gst_bin_iterate (data);
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}
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@ -54,9 +54,6 @@
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#define fixed short
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/* FIX_MPY() - fixed-point multiplication macro.
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This macro is a statement, not an expression (uses asm).
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BEWARE: make sure _DX is not clobbered by evaluating (A) or DEST.
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args are all of type fixed.
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Scaling ensures that 32767*32767 = 32767. */
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#define FIX_MPY(DEST,A,B) DEST = ((long)(A) * (long)(B))>>15
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@ -65,8 +62,9 @@
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#define LOG2_N_WAVE 10 /* log2(N_WAVE) */
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#define N_LOUD 100 /* dimension of Loudampl[] */
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extern fixed gst_spectrum_Sinewave[N_WAVE]; /* placed at end of this file for clarity */
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extern fixed gst_spectrum_Loudampl[N_LOUD];
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extern fixed const gst_spectrum_Sinewave[N_WAVE]; /* placed at end of this file for clarity */
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extern fixed const gst_spectrum_Loudampl[N_LOUD];
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static int gst_spectrum_db_from_ampl (fixed re, fixed im);
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static fixed gst_spectrum_fix_mpy (fixed a, fixed b);
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@ -221,7 +219,7 @@ gst_spectrum_fix_loud (fixed loud[], fixed fr[], fixed fi[], int n,
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/* db_from_ampl() - find loudness (in dB) from
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the complex amplitude.
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*/
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int
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static int
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gst_spectrum_db_from_ampl (fixed re, fixed im)
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{
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static long loud2[N_LOUD] = { 0 };
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@ -250,17 +248,18 @@ gst_spectrum_db_from_ampl (fixed re, fixed im)
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/*
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fix_mpy() - fixed-point multiplication
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*/
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fixed
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static fixed
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gst_spectrum_fix_mpy (fixed a, fixed b)
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{
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FIX_MPY (a, a, b);
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return a;
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}
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#if 0
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/*
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iscale() - scale an integer value by (numer/denom)
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*/
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int
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static int
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gst_spectrum_iscale (int value, int numer, int denom)
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{
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return (long) value *(long) numer / (long) denom;
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@ -269,14 +268,15 @@ gst_spectrum_iscale (int value, int numer, int denom)
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/*
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fix_dot() - dot product of two fixed arrays
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*/
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fixed
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static fixed
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gst_spectrum_fix_dot (fixed * hpa, fixed * pb, int n)
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{
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fixed *pa = hpa; /* FIXME */
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long sum;
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register fixed a, b;
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/* seg = FP_SEG(hpa);
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/*
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seg = FP_SEG(hpa);
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off = FP_OFF(hpa);
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seg += off>>4;
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off &= 0x000F;
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return (fixed) sum;
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}
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#endif
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#if N_WAVE != 1024
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ERROR:N_WAVE != 1024
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#endif
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fixed gst_spectrum_Sinewave[1024] = {
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fixed const gst_spectrum_Sinewave[1024] = {
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0, 201, 402, 603, 804, 1005, 1206, 1406,
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1607, 1808, 2009, 2209, 2410, 2610, 2811, 3011,
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3211, 3411, 3611, 3811, 4011, 4210, 4409, 4608,
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@ -431,12 +432,13 @@ ERROR:N_WAVE != 1024
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-6392, -6195, -5997, -5799, -5601, -5403, -5205, -5006,
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-4807, -4608, -4409, -4210, -4011, -3811, -3611, -3411,
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-3211, -3011, -2811, -2610, -2410, -2209, -2009, -1808,
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-1607, -1406, -1206, -1005, -804, -603, -402, -201,};
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-1607, -1406, -1206, -1005, -804, -603, -402, -201,
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};
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#if N_LOUD != 100
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ERROR:N_LOUD != 100
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#endif
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fixed gst_spectrum_Loudampl[100] = {
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fixed const gst_spectrum_Loudampl[100] = {
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32767, 29203, 26027, 23197, 20674, 18426, 16422, 14636,
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13044, 11626, 10361, 9234, 8230, 7335, 6537, 5826,
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5193, 4628, 4125, 3676, 3276, 2920, 2602, 2319,
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51, 46, 41, 36, 32, 29, 26, 23,
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20, 18, 16, 14, 13, 11, 10, 9,
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8, 7, 6, 5, 5, 4, 4, 3,
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3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0,};
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3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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};
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@ -1,5 +1,6 @@
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/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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* <2006> Stefan Kost <ensonic@users.sf.net>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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@ -24,12 +25,33 @@
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#include "gstspectrum.h"
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GST_DEBUG_CATEGORY_STATIC (gst_spectrum_debug);
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#define GST_CAT_DEFAULT gst_spectrum_debug
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/* elementfactory information */
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static const GstElementDetails gst_spectrum_details =
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GST_ELEMENT_DETAILS ("Spectrum analyzer",
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"Filter/Analyzer/Audio",
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"Run an FFT on the audio signal, output spectrum data",
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"Erik Walthinsen <omega@cse.ogi.edu>");
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"Erik Walthinsen <omega@cse.ogi.edu>,"
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"Stefan Kost <ensonic@users.sf.net>");
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static GstStaticPadTemplate sink_template_factory =
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GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS ("audio/x-raw-int, "
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"rate = (int) [ 1, MAX ], "
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"channels = (int) 1, "
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"endianness = (int) BYTE_ORDER, "
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"width = (int) 16, " "depth = (int) 16, " "signed = (boolean) true")
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);
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static GstStaticPadTemplate src_template_factory =
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GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS_ANY);
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/* Spectrum signals and args */
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enum
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@ -48,18 +70,17 @@ enum
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static void gst_spectrum_base_init (gpointer g_class);
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static void gst_spectrum_class_init (GstSpectrumClass * klass);
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static void gst_spectrum_init (GstSpectrum * spectrum);
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static void gst_spectrum_dispose (GObject * object);
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static void gst_spectrum_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_spectrum_chain (GstPad * pad, GstData * _data);
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static GstFlowReturn gst_spectrum_chain (GstPad * pad, GstBuffer * buffer);
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#define fixed short
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int gst_spectrum_fix_fft (fixed fr[], fixed fi[], int m, int inverse);
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void gst_spectrum_fix_loud (fixed loud[], fixed fr[], fixed fi[], int n,
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extern int gst_spectrum_fix_fft (fixed fr[], fixed fi[], int m, int inverse);
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extern void gst_spectrum_fix_loud (fixed loud[], fixed fr[], fixed fi[], int n,
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int scale_shift);
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void gst_spectrum_window (fixed fr[], int n);
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extern void gst_spectrum_window (fixed fr[], int n);
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static GstElementClass *parent_class = NULL;
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@ -83,9 +104,10 @@ gst_spectrum_get_type (void)
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(GInstanceInitFunc) gst_spectrum_init,
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};
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spectrum_type =
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g_type_register_static (GST_TYPE_ELEMENT, "GstSpectrum", &spectrum_info,
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0);
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spectrum_type = g_type_register_static (GST_TYPE_ELEMENT, "GstSpectrum",
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&spectrum_info, 0);
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GST_DEBUG_CATEGORY_INIT (gst_spectrum_debug, "spectrum", 0,
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"audio spectrum analyser element");
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}
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return spectrum_type;
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}
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@ -95,113 +117,128 @@ gst_spectrum_base_init (gpointer g_class)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&sink_template_factory));
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&src_template_factory));
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gst_element_class_set_details (element_class, &gst_spectrum_details);
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}
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static void
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gst_spectrum_class_init (GstSpectrumClass * klass)
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{
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GObjectClass *gobject_class;
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gobject_class = (GObjectClass *) klass;
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GObjectClass *gobject_class = (GObjectClass *) klass;
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parent_class = g_type_class_peek_parent (klass);
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|
||||
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_WRITABLE)); /* CHECKME */
|
||||
|
||||
gobject_class->set_property = gst_spectrum_set_property;
|
||||
gobject_class->dispose = gst_spectrum_dispose;
|
||||
|
||||
g_object_class_install_property (gobject_class, ARG_WIDTH,
|
||||
g_param_spec_int ("width", "width", "width",
|
||||
G_MININT, G_MAXINT, 0, G_PARAM_WRITABLE));
|
||||
|
||||
}
|
||||
|
||||
static void
|
||||
gst_spectrum_init (GstSpectrum * spectrum)
|
||||
{
|
||||
spectrum->sinkpad = gst_pad_new ("sink", GST_PAD_SINK);
|
||||
spectrum->sinkpad =
|
||||
gst_pad_new_from_static_template (&sink_template_factory, "sink");
|
||||
gst_element_add_pad (GST_ELEMENT (spectrum), spectrum->sinkpad);
|
||||
gst_pad_set_chain_function (spectrum->sinkpad, gst_spectrum_chain);
|
||||
spectrum->srcpad = gst_pad_new ("src", GST_PAD_SRC);
|
||||
|
||||
spectrum->srcpad =
|
||||
gst_pad_new_from_static_template (&src_template_factory, "src");
|
||||
gst_element_add_pad (GST_ELEMENT (spectrum), spectrum->srcpad);
|
||||
|
||||
spectrum->width = 75;
|
||||
spectrum->base = 8;
|
||||
spectrum->len = 1024;
|
||||
|
||||
spectrum->loud = g_malloc (spectrum->len * sizeof (gint16));
|
||||
spectrum->im = g_malloc (spectrum->len * sizeof (gint16));
|
||||
memset (spectrum->im, 0, spectrum->len * sizeof (gint16));
|
||||
spectrum->re = g_malloc (spectrum->len * sizeof (gint16));
|
||||
memset (spectrum->re, 0, spectrum->len * sizeof (gint16));
|
||||
}
|
||||
|
||||
static void
|
||||
gst_spectrum_dispose (GObject * object)
|
||||
{
|
||||
GstSpectrum *spectrum = GST_SPECTRUM (object);
|
||||
|
||||
g_free (spectrum->re);
|
||||
g_free (spectrum->im);
|
||||
g_free (spectrum->loud);
|
||||
|
||||
G_OBJECT_CLASS (parent_class)->dispose (object);
|
||||
}
|
||||
|
||||
static void
|
||||
gst_spectrum_set_property (GObject * object, guint prop_id,
|
||||
const GValue * value, GParamSpec * pspec)
|
||||
{
|
||||
GstSpectrum *spectrum;
|
||||
|
||||
g_return_if_fail (GST_IS_SPECTRUM (object));
|
||||
spectrum = GST_SPECTRUM (object);
|
||||
GstSpectrum *spectrum = GST_SPECTRUM (object);
|
||||
|
||||
switch (prop_id) {
|
||||
case ARG_WIDTH:
|
||||
spectrum->width = g_value_get_int (value);
|
||||
break;
|
||||
default:
|
||||
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
gst_spectrum_chain (GstPad * pad, GstData * _data)
|
||||
static GstFlowReturn
|
||||
gst_spectrum_chain (GstPad * pad, GstBuffer * buffer)
|
||||
{
|
||||
GstBuffer *buf = GST_BUFFER (_data);
|
||||
GstSpectrum *spectrum;
|
||||
gint spec_base, spec_len;
|
||||
gint16 *re, *im, *loud;
|
||||
gint16 *samples;
|
||||
gint step, pos, i;
|
||||
gint step, pos, num, i;
|
||||
guchar *spect;
|
||||
GstBuffer *newbuf;
|
||||
|
||||
g_return_if_fail (pad != NULL);
|
||||
g_return_if_fail (GST_IS_PAD (pad));
|
||||
g_return_if_fail (buf != NULL);
|
||||
|
||||
spectrum = GST_SPECTRUM (GST_OBJECT_PARENT (pad));
|
||||
samples = (gint16 *) GST_BUFFER_DATA (buffer);
|
||||
|
||||
samples = (gint16 *) GST_BUFFER_DATA (buf);
|
||||
GST_LOG ("buffer-size = %ld", GST_BUFFER_SIZE (buffer));
|
||||
|
||||
spec_base = 8;
|
||||
spec_len = 1024;
|
||||
/* FIXME:need a gst_adapter */
|
||||
num = GST_BUFFER_SIZE (buffer) / 2;
|
||||
num = MIN (num, spectrum->len);
|
||||
|
||||
im = g_malloc (spec_len * sizeof (gint16));
|
||||
g_return_if_fail (im != NULL);
|
||||
loud = g_malloc (spec_len * sizeof (gint16));
|
||||
g_return_if_fail (loud != NULL);
|
||||
for (i = 0; i < num; i++)
|
||||
spectrum->re[i] = (samples[(i * 2)] + samples[(i * 2) + 1]) >> 1;
|
||||
|
||||
memset (im, 0, spec_len * sizeof (gint16));
|
||||
/*if (spectrum->meta->channels == 2) { */
|
||||
re = g_malloc (spec_len * sizeof (gint16));
|
||||
for (i = 0; i < spec_len; i++)
|
||||
re[i] = (samples[(i * 2)] + samples[(i * 2) + 1]) >> 1;
|
||||
/*} else */
|
||||
/* re = samples; */
|
||||
gst_spectrum_window (re, spec_len);
|
||||
gst_spectrum_fix_fft (re, im, spec_base, FALSE);
|
||||
gst_spectrum_fix_loud (loud, re, im, spec_len, 0);
|
||||
if (re != samples)
|
||||
g_free (re);
|
||||
g_free (im);
|
||||
step = spec_len / (spectrum->width * 2);
|
||||
gst_spectrum_window (spectrum->re, spectrum->len);
|
||||
gst_spectrum_fix_fft (spectrum->re, spectrum->im, spectrum->base, FALSE);
|
||||
gst_spectrum_fix_loud (spectrum->loud, spectrum->re, spectrum->im,
|
||||
spectrum->len, 0);
|
||||
|
||||
/* resample to requested width */
|
||||
step = spectrum->len / (spectrum->width * 4); /* <-- shouldn't this be 2 instead of 4? */
|
||||
spect = (guchar *) g_malloc (spectrum->width);
|
||||
for (i = 0, pos = 0; i < spectrum->width; i++, pos += step) {
|
||||
if (loud[pos] > -60)
|
||||
spect[i] = (loud[pos] + 60) / 2;
|
||||
else
|
||||
/* > -60 db? */
|
||||
if (spectrum->loud[pos] > -60) {
|
||||
spect[i] = spectrum->loud[pos] + 60;
|
||||
/*
|
||||
if (spect[i] > 15);
|
||||
spect[i] = 15;
|
||||
*/
|
||||
} else
|
||||
/* treat as silence */
|
||||
spect[i] = 0;
|
||||
/* if (spect[i] > 15); */
|
||||
/* spect[i] = 15; */
|
||||
}
|
||||
g_free (loud);
|
||||
gst_buffer_unref (buf);
|
||||
/* g_free(samples); */
|
||||
gst_buffer_unref (buffer);
|
||||
|
||||
newbuf = gst_buffer_new ();
|
||||
g_return_if_fail (newbuf != NULL);
|
||||
GST_BUFFER_DATA (newbuf) = spect;
|
||||
GST_BUFFER_SIZE (newbuf) = spectrum->width;
|
||||
|
||||
gst_pad_push (spectrum->srcpad, GST_DATA (newbuf));
|
||||
return gst_pad_push (spectrum->srcpad, newbuf);
|
||||
}
|
||||
|
||||
static gboolean
|
||||
|
|
|
@ -39,7 +39,7 @@ extern "C" {
|
|||
#define GST_IS_SPECTRUM(obj) \
|
||||
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_SPECTRUM))
|
||||
#define GST_IS_SPECTRUM_CLASS(obj) \
|
||||
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_SPECTRUM))
|
||||
(G_TYPE_CHECK_CLASS_TYPE((obj),GST_TYPE_SPECTRUM))
|
||||
|
||||
typedef struct _GstSpectrum GstSpectrum;
|
||||
typedef struct _GstSpectrumClass GstSpectrumClass;
|
||||
|
@ -50,6 +50,8 @@ struct _GstSpectrum {
|
|||
GstPad *sinkpad,*srcpad;
|
||||
|
||||
gint width;
|
||||
gint base, len;
|
||||
gint16 *re, *im, *loud;
|
||||
};
|
||||
|
||||
struct _GstSpectrumClass {
|
||||
|
|
Loading…
Reference in a new issue