mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-07-02 20:55:55 +00:00
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:
Stefan Kost
parent
4e5f3fae24
commit
0428d5cf5f
12
ChangeLog
12
ChangeLog
|
|
@ -1,3 +1,15 @@
|
|||
2006-05-21 Stefan Kost <ensonic@users.sf.net>
|
||||
|
||||
* 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
|
||||
|
||||
2006-05-19 Edgard Lima <edgard.lima@indt.org.br>
|
||||
|
||||
* sys/v4l2/gstv4l2.c:
|
||||
|
|
|
|||
35
configure.ac
35
configure.ac
|
|
@ -79,6 +79,7 @@ GST_PLUGINS_ALL="\
|
|||
cdxaparse \
|
||||
freeze \
|
||||
modplug \
|
||||
spectrum \
|
||||
speed \
|
||||
qtdemux \
|
||||
xingheader \
|
||||
|
|
@ -154,16 +155,41 @@ dnl uninstalled is selected preferentially -- see pkg-config(1)
|
|||
GST_CHECK_GST($GST_MAJORMINOR, [$GST_REQ])
|
||||
GST_CHECK_GST_BASE($GST_MAJORMINOR, [$GST_REQ])
|
||||
GST_CHECK_GST_CHECK($GST_MAJORMINOR, [$GST_REQ], no)
|
||||
GST_CHECK_GST_PLUGINS_BASE($GST_MAJORMINOR, [$GSTPB_REQ], no)
|
||||
|
||||
GSTPB_PLUGINS_DIR=`$PKG_CONFIG gstreamer-plugins-base-$GST_MAJORMINOR --variable pluginsdir`
|
||||
AC_SUBST(GSTPB_PLUGINS_DIR)
|
||||
AC_MSG_NOTICE(Using GStreamer Base Plugins in $GSTPB_PLUGINS_DIR)
|
||||
|
||||
dnl FIXME: get rid of this by making sure gstreamer-check brings it in
|
||||
dnl check for "check", unit testing library/header
|
||||
AM_PATH_CHECK(0.9.2, HAVE_CHECK=yes, HAVE_CHECK=no)
|
||||
AM_CONDITIONAL(HAVE_CHECK, test "x$HAVE_CHECK" = "xyes")
|
||||
|
||||
GST_CHECK_GST_PLUGINS_BASE($GST_MAJORMINOR, [$GSTPB_REQ], no)
|
||||
GSTPB_PLUGINS_DIR=`$PKG_CONFIG gstreamer-plugins-base-$GST_MAJORMINOR --variable pluginsdir`
|
||||
AC_SUBST(GSTPB_PLUGINS_DIR)
|
||||
AC_MSG_NOTICE(Using GStreamer Base Plugins in $GSTPB_PLUGINS_DIR)
|
||||
dnl GTK is optional and used in examples
|
||||
HAVE_GTK=NO
|
||||
PKG_CHECK_MODULES(GTK2, gtk+-2.0 >= 2.2.0, HAVE_GTK_22=yes, HAVE_GTK_22=no)
|
||||
if test "x$HAVE_GTK_22" = "xyes"; then
|
||||
HAVE_GTK=yes
|
||||
GTK_VERSION=`$PKG_CONFIG --variable=gtk_binary_version gtk+-2.0`
|
||||
AC_SUBST(GTK_VERSION)
|
||||
GTK_PREFIX=`$PKG_CONFIG --variable=prefix gdk-pixbuf-2.0`
|
||||
AC_SUBST(GTK_BASE_DIR)
|
||||
GDK_PIXBUF_LIBDIR=`$PKG_CONFIG --variable=libdir gdk-pixbuf-2.0`
|
||||
GDK_PIXBUF_PREFIXDIR=`$PKG_CONFIG --variable=prefix gdk-pixbuf-2.0`
|
||||
AC_SUBST(GTK_BASE_DIR)
|
||||
else
|
||||
PKG_CHECK_MODULES(GTK2, gtk+-2.0, HAVE_GTK_20=yes, HAVE_GTK_20=no)
|
||||
fi
|
||||
if test "x$HAVE_GTK_20" = "xyes"; then
|
||||
HAVE_GTK=yes
|
||||
fi
|
||||
GTK_CFLAGS=$GTK2_CFLAGS
|
||||
GTK_LIBS=$GTK2_LIBS
|
||||
AC_SUBST(GTK_LIBS)
|
||||
AC_SUBST(GTK_CFLAGS)
|
||||
AC_SUBST(HAVE_GTK)
|
||||
AM_CONDITIONAL(HAVE_GTK, test "x$HAVE_GTK" = "xyes")
|
||||
|
||||
dnl set license and copyright notice
|
||||
GST_LICENSE="LGPL"
|
||||
|
|
@ -679,6 +705,7 @@ gst/cdxaparse/Makefile
|
|||
gst/freeze/Makefile
|
||||
gst/modplug/Makefile
|
||||
gst/modplug/libmodplug/Makefile
|
||||
gst/spectrum/Makefile
|
||||
gst/speed/Makefile
|
||||
gst/qtdemux/Makefile
|
||||
gst/tta/Makefile
|
||||
|
|
|
|||
|
|
@ -4,26 +4,26 @@
|
|||
#include <gst/gst.h>
|
||||
#include <gtk/gtk.h>
|
||||
|
||||
extern gboolean _gst_plugin_spew;
|
||||
|
||||
gboolean idle_func (gpointer data);
|
||||
#define DEFAULT_AUDIOSRC "alsasrc"
|
||||
#define SPECT_BANDS 256
|
||||
|
||||
GtkWidget *drawingarea;
|
||||
|
||||
void
|
||||
static void
|
||||
spectrum_chain (GstElement * sink, GstBuffer * buf, GstPad * pad,
|
||||
gpointer unused)
|
||||
{
|
||||
gint i;
|
||||
guchar *data = buf->data;
|
||||
GdkRectangle rect = { 0, 0, GST_BUFFER_SIZE (buf), 25 };
|
||||
gint width = GST_BUFFER_SIZE (buf);
|
||||
GdkRectangle rect = { 0, 0, width, 50 };
|
||||
|
||||
gdk_window_begin_paint_rect (drawingarea->window, &rect);
|
||||
gdk_draw_rectangle (drawingarea->window, drawingarea->style->black_gc,
|
||||
TRUE, 0, 0, GST_BUFFER_SIZE (buf), 25);
|
||||
for (i = 0; i < GST_BUFFER_SIZE (buf); i++) {
|
||||
TRUE, 0, 0, width, 50);
|
||||
for (i = 0; i < width; i++) {
|
||||
gdk_draw_rectangle (drawingarea->window, drawingarea->style->white_gc,
|
||||
TRUE, i, 32 - data[i], 1, data[i]);
|
||||
TRUE, i, 64 - data[i], 1, data[i]);
|
||||
}
|
||||
gdk_window_end_paint (drawingarea->window);
|
||||
}
|
||||
|
|
@ -32,7 +32,7 @@ int
|
|||
main (int argc, char *argv[])
|
||||
{
|
||||
GstElement *bin;
|
||||
GstElement *src, *spectrum, *sink;
|
||||
GstElement *src, *conv, *spectrum, *sink;
|
||||
|
||||
GtkWidget *appwindow;
|
||||
|
||||
|
|
@ -42,34 +42,35 @@ main (int argc, char *argv[])
|
|||
bin = gst_pipeline_new ("bin");
|
||||
|
||||
src = gst_element_factory_make (DEFAULT_AUDIOSRC, "src");
|
||||
g_object_set (G_OBJECT (src), "buffersize", (gulong) 1024, NULL);
|
||||
g_object_set (G_OBJECT (src), "blocksize", (gulong) 1024 * 2, NULL);
|
||||
|
||||
conv = gst_element_factory_make ("audioconvert", "conv");
|
||||
|
||||
spectrum = gst_element_factory_make ("spectrum", "spectrum");
|
||||
g_object_set (G_OBJECT (spectrum), "width", 256, NULL);
|
||||
g_object_set (G_OBJECT (spectrum), "width", SPECT_BANDS, NULL);
|
||||
|
||||
sink = gst_element_factory_make ("fakesink", "sink");
|
||||
g_object_set (G_OBJECT (sink), "signal-handoffs", TRUE, NULL);
|
||||
|
||||
g_signal_connect (sink, "handoff", G_CALLBACK (spectrum_chain), NULL);
|
||||
|
||||
gst_bin_add_many (GST_BIN (bin), src, spectrum, sink, NULL);
|
||||
gst_element_link_many (src, spectrum, sink, NULL);
|
||||
gst_bin_add_many (GST_BIN (bin), src, conv, spectrum, sink, NULL);
|
||||
if (!gst_element_link_many (src, conv, spectrum, sink, NULL)) {
|
||||
fprintf (stderr, "cant link elements\n");
|
||||
exit (1);
|
||||
}
|
||||
|
||||
appwindow = gtk_window_new (GTK_WINDOW_TOPLEVEL);
|
||||
drawingarea = gtk_drawing_area_new ();
|
||||
gtk_drawing_area_size (GTK_DRAWING_AREA (drawingarea), 256, 32);
|
||||
gtk_drawing_area_size (GTK_DRAWING_AREA (drawingarea), SPECT_BANDS, 64);
|
||||
gtk_container_add (GTK_CONTAINER (appwindow), drawingarea);
|
||||
gtk_widget_show_all (appwindow);
|
||||
|
||||
gst_element_set_state (GST_ELEMENT (bin), GST_STATE_PLAYING);
|
||||
|
||||
g_idle_add (idle_func, bin);
|
||||
|
||||
gst_element_set_state (bin, GST_STATE_PLAYING);
|
||||
gtk_main ();
|
||||
gst_element_set_state (bin, GST_STATE_NULL);
|
||||
|
||||
gst_object_unref (bin);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
gboolean
|
||||
idle_func (gpointer data)
|
||||
{
|
||||
return gst_bin_iterate (data);
|
||||
}
|
||||
|
|
|
|||
|
|
@ -54,9 +54,6 @@
|
|||
#define fixed short
|
||||
|
||||
/* FIX_MPY() - fixed-point multiplication macro.
|
||||
This macro is a statement, not an expression (uses asm).
|
||||
BEWARE: make sure _DX is not clobbered by evaluating (A) or DEST.
|
||||
args are all of type fixed.
|
||||
Scaling ensures that 32767*32767 = 32767. */
|
||||
|
||||
#define FIX_MPY(DEST,A,B) DEST = ((long)(A) * (long)(B))>>15
|
||||
|
|
@ -65,8 +62,9 @@
|
|||
#define LOG2_N_WAVE 10 /* log2(N_WAVE) */
|
||||
#define N_LOUD 100 /* dimension of Loudampl[] */
|
||||
|
||||
extern fixed gst_spectrum_Sinewave[N_WAVE]; /* placed at end of this file for clarity */
|
||||
extern fixed gst_spectrum_Loudampl[N_LOUD];
|
||||
extern fixed const gst_spectrum_Sinewave[N_WAVE]; /* placed at end of this file for clarity */
|
||||
extern fixed const gst_spectrum_Loudampl[N_LOUD];
|
||||
|
||||
static int gst_spectrum_db_from_ampl (fixed re, fixed im);
|
||||
static fixed gst_spectrum_fix_mpy (fixed a, fixed b);
|
||||
|
||||
|
|
@ -221,7 +219,7 @@ gst_spectrum_fix_loud (fixed loud[], fixed fr[], fixed fi[], int n,
|
|||
/* db_from_ampl() - find loudness (in dB) from
|
||||
the complex amplitude.
|
||||
*/
|
||||
int
|
||||
static int
|
||||
gst_spectrum_db_from_ampl (fixed re, fixed im)
|
||||
{
|
||||
static long loud2[N_LOUD] = { 0 };
|
||||
|
|
@ -250,17 +248,18 @@ gst_spectrum_db_from_ampl (fixed re, fixed im)
|
|||
/*
|
||||
fix_mpy() - fixed-point multiplication
|
||||
*/
|
||||
fixed
|
||||
static fixed
|
||||
gst_spectrum_fix_mpy (fixed a, fixed b)
|
||||
{
|
||||
FIX_MPY (a, a, b);
|
||||
return a;
|
||||
}
|
||||
|
||||
#if 0
|
||||
/*
|
||||
iscale() - scale an integer value by (numer/denom)
|
||||
*/
|
||||
int
|
||||
static int
|
||||
gst_spectrum_iscale (int value, int numer, int denom)
|
||||
{
|
||||
return (long) value *(long) numer / (long) denom;
|
||||
|
|
@ -269,19 +268,20 @@ gst_spectrum_iscale (int value, int numer, int denom)
|
|||
/*
|
||||
fix_dot() - dot product of two fixed arrays
|
||||
*/
|
||||
fixed
|
||||
static fixed
|
||||
gst_spectrum_fix_dot (fixed * hpa, fixed * pb, int n)
|
||||
{
|
||||
fixed *pa = hpa; /* FIXME */
|
||||
long sum;
|
||||
register fixed a, b;
|
||||
|
||||
/* seg = FP_SEG(hpa);
|
||||
off = FP_OFF(hpa);
|
||||
seg += off>>4;
|
||||
off &= 0x000F;
|
||||
pa = MK_FP(seg,off);
|
||||
*/
|
||||
/*
|
||||
seg = FP_SEG(hpa);
|
||||
off = FP_OFF(hpa);
|
||||
seg += off>>4;
|
||||
off &= 0x000F;
|
||||
pa = MK_FP(seg,off);
|
||||
*/
|
||||
sum = 0L;
|
||||
while (n--) {
|
||||
a = *pa++;
|
||||
|
|
@ -298,153 +298,156 @@ gst_spectrum_fix_dot (fixed * hpa, fixed * pb, int n)
|
|||
return (fixed) sum;
|
||||
|
||||
}
|
||||
#endif
|
||||
|
||||
#if N_WAVE != 1024
|
||||
ERROR:N_WAVE != 1024
|
||||
#endif
|
||||
fixed gst_spectrum_Sinewave[1024] = {
|
||||
0, 201, 402, 603, 804, 1005, 1206, 1406,
|
||||
1607, 1808, 2009, 2209, 2410, 2610, 2811, 3011,
|
||||
3211, 3411, 3611, 3811, 4011, 4210, 4409, 4608,
|
||||
4807, 5006, 5205, 5403, 5601, 5799, 5997, 6195,
|
||||
6392, 6589, 6786, 6982, 7179, 7375, 7571, 7766,
|
||||
7961, 8156, 8351, 8545, 8739, 8932, 9126, 9319,
|
||||
9511, 9703, 9895, 10087, 10278, 10469, 10659, 10849,
|
||||
11038, 11227, 11416, 11604, 11792, 11980, 12166, 12353,
|
||||
12539, 12724, 12909, 13094, 13278, 13462, 13645, 13827,
|
||||
14009, 14191, 14372, 14552, 14732, 14911, 15090, 15268,
|
||||
15446, 15623, 15799, 15975, 16150, 16325, 16499, 16672,
|
||||
16845, 17017, 17189, 17360, 17530, 17699, 17868, 18036,
|
||||
18204, 18371, 18537, 18702, 18867, 19031, 19194, 19357,
|
||||
19519, 19680, 19840, 20000, 20159, 20317, 20474, 20631,
|
||||
20787, 20942, 21096, 21249, 21402, 21554, 21705, 21855,
|
||||
22004, 22153, 22301, 22448, 22594, 22739, 22883, 23027,
|
||||
23169, 23311, 23452, 23592, 23731, 23869, 24006, 24143,
|
||||
24278, 24413, 24546, 24679, 24811, 24942, 25072, 25201,
|
||||
25329, 25456, 25582, 25707, 25831, 25954, 26077, 26198,
|
||||
26318, 26437, 26556, 26673, 26789, 26905, 27019, 27132,
|
||||
27244, 27355, 27466, 27575, 27683, 27790, 27896, 28001,
|
||||
28105, 28208, 28309, 28410, 28510, 28608, 28706, 28802,
|
||||
28897, 28992, 29085, 29177, 29268, 29358, 29446, 29534,
|
||||
29621, 29706, 29790, 29873, 29955, 30036, 30116, 30195,
|
||||
30272, 30349, 30424, 30498, 30571, 30643, 30713, 30783,
|
||||
30851, 30918, 30984, 31049,
|
||||
31113, 31175, 31236, 31297,
|
||||
31356, 31413, 31470, 31525, 31580, 31633, 31684, 31735,
|
||||
31785, 31833, 31880, 31926, 31970, 32014, 32056, 32097,
|
||||
32137, 32176, 32213, 32249, 32284, 32318, 32350, 32382,
|
||||
32412, 32441, 32468, 32495, 32520, 32544, 32567, 32588,
|
||||
32609, 32628, 32646, 32662, 32678, 32692, 32705, 32717,
|
||||
32727, 32736, 32744, 32751, 32757, 32761, 32764, 32766,
|
||||
32767, 32766, 32764, 32761, 32757, 32751, 32744, 32736,
|
||||
32727, 32717, 32705, 32692, 32678, 32662, 32646, 32628,
|
||||
32609, 32588, 32567, 32544, 32520, 32495, 32468, 32441,
|
||||
32412, 32382, 32350, 32318, 32284, 32249, 32213, 32176,
|
||||
32137, 32097, 32056, 32014, 31970, 31926, 31880, 31833,
|
||||
31785, 31735, 31684, 31633, 31580, 31525, 31470, 31413,
|
||||
31356, 31297, 31236, 31175, 31113, 31049, 30984, 30918,
|
||||
30851, 30783, 30713, 30643, 30571, 30498, 30424, 30349,
|
||||
30272, 30195, 30116, 30036, 29955, 29873, 29790, 29706,
|
||||
29621, 29534, 29446, 29358, 29268, 29177, 29085, 28992,
|
||||
28897, 28802, 28706, 28608, 28510, 28410, 28309, 28208,
|
||||
28105, 28001, 27896, 27790, 27683, 27575, 27466, 27355,
|
||||
27244, 27132, 27019, 26905, 26789, 26673, 26556, 26437,
|
||||
26318, 26198, 26077, 25954, 25831, 25707, 25582, 25456,
|
||||
25329, 25201, 25072, 24942, 24811, 24679, 24546, 24413,
|
||||
24278, 24143, 24006, 23869, 23731, 23592, 23452, 23311,
|
||||
23169, 23027, 22883, 22739, 22594, 22448, 22301, 22153,
|
||||
22004, 21855, 21705, 21554, 21402, 21249, 21096, 20942,
|
||||
20787, 20631, 20474, 20317, 20159, 20000, 19840, 19680,
|
||||
19519, 19357, 19194, 19031, 18867, 18702, 18537, 18371,
|
||||
18204, 18036, 17868, 17699, 17530, 17360, 17189, 17017,
|
||||
16845, 16672, 16499, 16325, 16150, 15975, 15799, 15623,
|
||||
15446, 15268, 15090, 14911, 14732, 14552, 14372, 14191,
|
||||
14009, 13827, 13645, 13462, 13278, 13094, 12909, 12724,
|
||||
12539, 12353, 12166, 11980, 11792, 11604, 11416, 11227,
|
||||
11038, 10849, 10659, 10469, 10278, 10087, 9895, 9703,
|
||||
9511, 9319, 9126, 8932, 8739, 8545, 8351, 8156,
|
||||
7961, 7766, 7571, 7375, 7179, 6982, 6786, 6589,
|
||||
6392, 6195, 5997, 5799, 5601, 5403, 5205, 5006,
|
||||
4807, 4608, 4409, 4210, 4011, 3811, 3611, 3411,
|
||||
3211, 3011, 2811, 2610, 2410, 2209, 2009, 1808,
|
||||
1607, 1406, 1206, 1005, 804, 603, 402, 201,
|
||||
0, -201, -402, -603, -804, -1005, -1206, -1406,
|
||||
-1607, -1808, -2009, -2209, -2410, -2610, -2811, -3011,
|
||||
-3211, -3411, -3611, -3811, -4011, -4210, -4409, -4608,
|
||||
-4807, -5006, -5205, -5403, -5601, -5799, -5997, -6195,
|
||||
-6392, -6589, -6786, -6982, -7179, -7375, -7571, -7766,
|
||||
-7961, -8156, -8351, -8545, -8739, -8932, -9126, -9319,
|
||||
-9511, -9703, -9895, -10087, -10278, -10469, -10659, -10849,
|
||||
-11038, -11227, -11416, -11604, -11792, -11980, -12166, -12353,
|
||||
-12539, -12724, -12909, -13094, -13278, -13462, -13645, -13827,
|
||||
-14009, -14191, -14372, -14552, -14732, -14911, -15090, -15268,
|
||||
-15446, -15623, -15799, -15975, -16150, -16325, -16499, -16672,
|
||||
-16845, -17017, -17189, -17360, -17530, -17699, -17868, -18036,
|
||||
-18204, -18371, -18537, -18702, -18867, -19031, -19194, -19357,
|
||||
-19519, -19680, -19840, -20000, -20159, -20317, -20474, -20631,
|
||||
-20787, -20942, -21096, -21249, -21402, -21554, -21705, -21855,
|
||||
-22004, -22153, -22301, -22448, -22594, -22739, -22883, -23027,
|
||||
-23169, -23311, -23452, -23592, -23731, -23869, -24006, -24143,
|
||||
-24278, -24413, -24546, -24679, -24811, -24942, -25072, -25201,
|
||||
-25329, -25456, -25582, -25707, -25831, -25954, -26077, -26198,
|
||||
-26318, -26437, -26556, -26673, -26789, -26905, -27019, -27132,
|
||||
-27244, -27355, -27466, -27575, -27683, -27790, -27896, -28001,
|
||||
-28105, -28208, -28309, -28410, -28510, -28608, -28706, -28802,
|
||||
-28897, -28992, -29085, -29177, -29268, -29358, -29446, -29534,
|
||||
-29621, -29706, -29790, -29873, -29955, -30036, -30116, -30195,
|
||||
-30272, -30349, -30424, -30498, -30571, -30643, -30713, -30783,
|
||||
-30851, -30918, -30984, -31049, -31113, -31175, -31236, -31297,
|
||||
-31356, -31413, -31470, -31525, -31580, -31633, -31684, -31735,
|
||||
-31785, -31833, -31880, -31926, -31970, -32014, -32056, -32097,
|
||||
-32137, -32176, -32213, -32249, -32284, -32318, -32350, -32382,
|
||||
-32412, -32441, -32468, -32495, -32520, -32544, -32567, -32588,
|
||||
-32609, -32628, -32646, -32662, -32678, -32692, -32705, -32717,
|
||||
-32727, -32736, -32744, -32751, -32757, -32761, -32764, -32766,
|
||||
-32767, -32766, -32764, -32761, -32757, -32751, -32744, -32736,
|
||||
-32727, -32717, -32705, -32692, -32678, -32662, -32646, -32628,
|
||||
-32609, -32588, -32567, -32544, -32520, -32495, -32468, -32441,
|
||||
-32412, -32382, -32350, -32318, -32284, -32249, -32213, -32176,
|
||||
-32137, -32097, -32056, -32014, -31970, -31926, -31880, -31833,
|
||||
-31785, -31735, -31684, -31633, -31580, -31525, -31470, -31413,
|
||||
-31356, -31297, -31236, -31175, -31113, -31049, -30984, -30918,
|
||||
-30851, -30783, -30713, -30643, -30571, -30498, -30424, -30349,
|
||||
-30272, -30195, -30116, -30036, -29955, -29873, -29790, -29706,
|
||||
-29621, -29534, -29446, -29358, -29268, -29177, -29085, -28992,
|
||||
-28897, -28802, -28706, -28608, -28510, -28410, -28309, -28208,
|
||||
-28105, -28001, -27896, -27790, -27683, -27575, -27466, -27355,
|
||||
-27244, -27132, -27019, -26905, -26789, -26673, -26556, -26437,
|
||||
-26318, -26198, -26077, -25954, -25831, -25707, -25582, -25456,
|
||||
-25329, -25201, -25072, -24942, -24811, -24679, -24546, -24413,
|
||||
-24278, -24143, -24006, -23869, -23731, -23592, -23452, -23311,
|
||||
-23169, -23027, -22883, -22739, -22594, -22448, -22301, -22153,
|
||||
-22004, -21855, -21705, -21554, -21402, -21249, -21096, -20942,
|
||||
-20787, -20631, -20474, -20317, -20159, -20000, -19840, -19680,
|
||||
-19519, -19357, -19194, -19031, -18867, -18702, -18537, -18371,
|
||||
-18204, -18036, -17868, -17699, -17530, -17360, -17189, -17017,
|
||||
-16845, -16672, -16499, -16325, -16150, -15975, -15799, -15623,
|
||||
-15446, -15268, -15090, -14911, -14732, -14552, -14372, -14191,
|
||||
-14009, -13827, -13645, -13462, -13278, -13094, -12909, -12724,
|
||||
-12539, -12353, -12166, -11980, -11792, -11604, -11416, -11227,
|
||||
-11038, -10849, -10659, -10469, -10278, -10087, -9895, -9703,
|
||||
-9511, -9319, -9126, -8932, -8739, -8545, -8351, -8156,
|
||||
-7961, -7766, -7571, -7375, -7179, -6982, -6786, -6589,
|
||||
-6392, -6195, -5997, -5799, -5601, -5403, -5205, -5006,
|
||||
-4807, -4608, -4409, -4210, -4011, -3811, -3611, -3411,
|
||||
-3211, -3011, -2811, -2610, -2410, -2209, -2009, -1808,
|
||||
-1607, -1406, -1206, -1005, -804, -603, -402, -201,};
|
||||
fixed const gst_spectrum_Sinewave[1024] = {
|
||||
0, 201, 402, 603, 804, 1005, 1206, 1406,
|
||||
1607, 1808, 2009, 2209, 2410, 2610, 2811, 3011,
|
||||
3211, 3411, 3611, 3811, 4011, 4210, 4409, 4608,
|
||||
4807, 5006, 5205, 5403, 5601, 5799, 5997, 6195,
|
||||
6392, 6589, 6786, 6982, 7179, 7375, 7571, 7766,
|
||||
7961, 8156, 8351, 8545, 8739, 8932, 9126, 9319,
|
||||
9511, 9703, 9895, 10087, 10278, 10469, 10659, 10849,
|
||||
11038, 11227, 11416, 11604, 11792, 11980, 12166, 12353,
|
||||
12539, 12724, 12909, 13094, 13278, 13462, 13645, 13827,
|
||||
14009, 14191, 14372, 14552, 14732, 14911, 15090, 15268,
|
||||
15446, 15623, 15799, 15975, 16150, 16325, 16499, 16672,
|
||||
16845, 17017, 17189, 17360, 17530, 17699, 17868, 18036,
|
||||
18204, 18371, 18537, 18702, 18867, 19031, 19194, 19357,
|
||||
19519, 19680, 19840, 20000, 20159, 20317, 20474, 20631,
|
||||
20787, 20942, 21096, 21249, 21402, 21554, 21705, 21855,
|
||||
22004, 22153, 22301, 22448, 22594, 22739, 22883, 23027,
|
||||
23169, 23311, 23452, 23592, 23731, 23869, 24006, 24143,
|
||||
24278, 24413, 24546, 24679, 24811, 24942, 25072, 25201,
|
||||
25329, 25456, 25582, 25707, 25831, 25954, 26077, 26198,
|
||||
26318, 26437, 26556, 26673, 26789, 26905, 27019, 27132,
|
||||
27244, 27355, 27466, 27575, 27683, 27790, 27896, 28001,
|
||||
28105, 28208, 28309, 28410, 28510, 28608, 28706, 28802,
|
||||
28897, 28992, 29085, 29177, 29268, 29358, 29446, 29534,
|
||||
29621, 29706, 29790, 29873, 29955, 30036, 30116, 30195,
|
||||
30272, 30349, 30424, 30498, 30571, 30643, 30713, 30783,
|
||||
30851, 30918, 30984, 31049,
|
||||
31113, 31175, 31236, 31297,
|
||||
31356, 31413, 31470, 31525, 31580, 31633, 31684, 31735,
|
||||
31785, 31833, 31880, 31926, 31970, 32014, 32056, 32097,
|
||||
32137, 32176, 32213, 32249, 32284, 32318, 32350, 32382,
|
||||
32412, 32441, 32468, 32495, 32520, 32544, 32567, 32588,
|
||||
32609, 32628, 32646, 32662, 32678, 32692, 32705, 32717,
|
||||
32727, 32736, 32744, 32751, 32757, 32761, 32764, 32766,
|
||||
32767, 32766, 32764, 32761, 32757, 32751, 32744, 32736,
|
||||
32727, 32717, 32705, 32692, 32678, 32662, 32646, 32628,
|
||||
32609, 32588, 32567, 32544, 32520, 32495, 32468, 32441,
|
||||
32412, 32382, 32350, 32318, 32284, 32249, 32213, 32176,
|
||||
32137, 32097, 32056, 32014, 31970, 31926, 31880, 31833,
|
||||
31785, 31735, 31684, 31633, 31580, 31525, 31470, 31413,
|
||||
31356, 31297, 31236, 31175, 31113, 31049, 30984, 30918,
|
||||
30851, 30783, 30713, 30643, 30571, 30498, 30424, 30349,
|
||||
30272, 30195, 30116, 30036, 29955, 29873, 29790, 29706,
|
||||
29621, 29534, 29446, 29358, 29268, 29177, 29085, 28992,
|
||||
28897, 28802, 28706, 28608, 28510, 28410, 28309, 28208,
|
||||
28105, 28001, 27896, 27790, 27683, 27575, 27466, 27355,
|
||||
27244, 27132, 27019, 26905, 26789, 26673, 26556, 26437,
|
||||
26318, 26198, 26077, 25954, 25831, 25707, 25582, 25456,
|
||||
25329, 25201, 25072, 24942, 24811, 24679, 24546, 24413,
|
||||
24278, 24143, 24006, 23869, 23731, 23592, 23452, 23311,
|
||||
23169, 23027, 22883, 22739, 22594, 22448, 22301, 22153,
|
||||
22004, 21855, 21705, 21554, 21402, 21249, 21096, 20942,
|
||||
20787, 20631, 20474, 20317, 20159, 20000, 19840, 19680,
|
||||
19519, 19357, 19194, 19031, 18867, 18702, 18537, 18371,
|
||||
18204, 18036, 17868, 17699, 17530, 17360, 17189, 17017,
|
||||
16845, 16672, 16499, 16325, 16150, 15975, 15799, 15623,
|
||||
15446, 15268, 15090, 14911, 14732, 14552, 14372, 14191,
|
||||
14009, 13827, 13645, 13462, 13278, 13094, 12909, 12724,
|
||||
12539, 12353, 12166, 11980, 11792, 11604, 11416, 11227,
|
||||
11038, 10849, 10659, 10469, 10278, 10087, 9895, 9703,
|
||||
9511, 9319, 9126, 8932, 8739, 8545, 8351, 8156,
|
||||
7961, 7766, 7571, 7375, 7179, 6982, 6786, 6589,
|
||||
6392, 6195, 5997, 5799, 5601, 5403, 5205, 5006,
|
||||
4807, 4608, 4409, 4210, 4011, 3811, 3611, 3411,
|
||||
3211, 3011, 2811, 2610, 2410, 2209, 2009, 1808,
|
||||
1607, 1406, 1206, 1005, 804, 603, 402, 201,
|
||||
0, -201, -402, -603, -804, -1005, -1206, -1406,
|
||||
-1607, -1808, -2009, -2209, -2410, -2610, -2811, -3011,
|
||||
-3211, -3411, -3611, -3811, -4011, -4210, -4409, -4608,
|
||||
-4807, -5006, -5205, -5403, -5601, -5799, -5997, -6195,
|
||||
-6392, -6589, -6786, -6982, -7179, -7375, -7571, -7766,
|
||||
-7961, -8156, -8351, -8545, -8739, -8932, -9126, -9319,
|
||||
-9511, -9703, -9895, -10087, -10278, -10469, -10659, -10849,
|
||||
-11038, -11227, -11416, -11604, -11792, -11980, -12166, -12353,
|
||||
-12539, -12724, -12909, -13094, -13278, -13462, -13645, -13827,
|
||||
-14009, -14191, -14372, -14552, -14732, -14911, -15090, -15268,
|
||||
-15446, -15623, -15799, -15975, -16150, -16325, -16499, -16672,
|
||||
-16845, -17017, -17189, -17360, -17530, -17699, -17868, -18036,
|
||||
-18204, -18371, -18537, -18702, -18867, -19031, -19194, -19357,
|
||||
-19519, -19680, -19840, -20000, -20159, -20317, -20474, -20631,
|
||||
-20787, -20942, -21096, -21249, -21402, -21554, -21705, -21855,
|
||||
-22004, -22153, -22301, -22448, -22594, -22739, -22883, -23027,
|
||||
-23169, -23311, -23452, -23592, -23731, -23869, -24006, -24143,
|
||||
-24278, -24413, -24546, -24679, -24811, -24942, -25072, -25201,
|
||||
-25329, -25456, -25582, -25707, -25831, -25954, -26077, -26198,
|
||||
-26318, -26437, -26556, -26673, -26789, -26905, -27019, -27132,
|
||||
-27244, -27355, -27466, -27575, -27683, -27790, -27896, -28001,
|
||||
-28105, -28208, -28309, -28410, -28510, -28608, -28706, -28802,
|
||||
-28897, -28992, -29085, -29177, -29268, -29358, -29446, -29534,
|
||||
-29621, -29706, -29790, -29873, -29955, -30036, -30116, -30195,
|
||||
-30272, -30349, -30424, -30498, -30571, -30643, -30713, -30783,
|
||||
-30851, -30918, -30984, -31049, -31113, -31175, -31236, -31297,
|
||||
-31356, -31413, -31470, -31525, -31580, -31633, -31684, -31735,
|
||||
-31785, -31833, -31880, -31926, -31970, -32014, -32056, -32097,
|
||||
-32137, -32176, -32213, -32249, -32284, -32318, -32350, -32382,
|
||||
-32412, -32441, -32468, -32495, -32520, -32544, -32567, -32588,
|
||||
-32609, -32628, -32646, -32662, -32678, -32692, -32705, -32717,
|
||||
-32727, -32736, -32744, -32751, -32757, -32761, -32764, -32766,
|
||||
-32767, -32766, -32764, -32761, -32757, -32751, -32744, -32736,
|
||||
-32727, -32717, -32705, -32692, -32678, -32662, -32646, -32628,
|
||||
-32609, -32588, -32567, -32544, -32520, -32495, -32468, -32441,
|
||||
-32412, -32382, -32350, -32318, -32284, -32249, -32213, -32176,
|
||||
-32137, -32097, -32056, -32014, -31970, -31926, -31880, -31833,
|
||||
-31785, -31735, -31684, -31633, -31580, -31525, -31470, -31413,
|
||||
-31356, -31297, -31236, -31175, -31113, -31049, -30984, -30918,
|
||||
-30851, -30783, -30713, -30643, -30571, -30498, -30424, -30349,
|
||||
-30272, -30195, -30116, -30036, -29955, -29873, -29790, -29706,
|
||||
-29621, -29534, -29446, -29358, -29268, -29177, -29085, -28992,
|
||||
-28897, -28802, -28706, -28608, -28510, -28410, -28309, -28208,
|
||||
-28105, -28001, -27896, -27790, -27683, -27575, -27466, -27355,
|
||||
-27244, -27132, -27019, -26905, -26789, -26673, -26556, -26437,
|
||||
-26318, -26198, -26077, -25954, -25831, -25707, -25582, -25456,
|
||||
-25329, -25201, -25072, -24942, -24811, -24679, -24546, -24413,
|
||||
-24278, -24143, -24006, -23869, -23731, -23592, -23452, -23311,
|
||||
-23169, -23027, -22883, -22739, -22594, -22448, -22301, -22153,
|
||||
-22004, -21855, -21705, -21554, -21402, -21249, -21096, -20942,
|
||||
-20787, -20631, -20474, -20317, -20159, -20000, -19840, -19680,
|
||||
-19519, -19357, -19194, -19031, -18867, -18702, -18537, -18371,
|
||||
-18204, -18036, -17868, -17699, -17530, -17360, -17189, -17017,
|
||||
-16845, -16672, -16499, -16325, -16150, -15975, -15799, -15623,
|
||||
-15446, -15268, -15090, -14911, -14732, -14552, -14372, -14191,
|
||||
-14009, -13827, -13645, -13462, -13278, -13094, -12909, -12724,
|
||||
-12539, -12353, -12166, -11980, -11792, -11604, -11416, -11227,
|
||||
-11038, -10849, -10659, -10469, -10278, -10087, -9895, -9703,
|
||||
-9511, -9319, -9126, -8932, -8739, -8545, -8351, -8156,
|
||||
-7961, -7766, -7571, -7375, -7179, -6982, -6786, -6589,
|
||||
-6392, -6195, -5997, -5799, -5601, -5403, -5205, -5006,
|
||||
-4807, -4608, -4409, -4210, -4011, -3811, -3611, -3411,
|
||||
-3211, -3011, -2811, -2610, -2410, -2209, -2009, -1808,
|
||||
-1607, -1406, -1206, -1005, -804, -603, -402, -201,
|
||||
};
|
||||
|
||||
#if N_LOUD != 100
|
||||
ERROR:N_LOUD != 100
|
||||
#endif
|
||||
fixed gst_spectrum_Loudampl[100] = {
|
||||
32767, 29203, 26027, 23197, 20674, 18426, 16422, 14636,
|
||||
13044, 11626, 10361, 9234, 8230, 7335, 6537, 5826,
|
||||
5193, 4628, 4125, 3676, 3276, 2920, 2602, 2319,
|
||||
2067, 1842, 1642, 1463, 1304, 1162, 1036, 923,
|
||||
823, 733, 653, 582, 519, 462, 412, 367,
|
||||
327, 292, 260, 231, 206, 184, 164, 146,
|
||||
130, 116, 103, 92, 82, 73, 65, 58,
|
||||
51, 46, 41, 36, 32, 29, 26, 23,
|
||||
20, 18, 16, 14, 13, 11, 10, 9,
|
||||
8, 7, 6, 5, 5, 4, 4, 3,
|
||||
3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0,};
|
||||
fixed const gst_spectrum_Loudampl[100] = {
|
||||
32767, 29203, 26027, 23197, 20674, 18426, 16422, 14636,
|
||||
13044, 11626, 10361, 9234, 8230, 7335, 6537, 5826,
|
||||
5193, 4628, 4125, 3676, 3276, 2920, 2602, 2319,
|
||||
2067, 1842, 1642, 1463, 1304, 1162, 1036, 923,
|
||||
823, 733, 653, 582, 519, 462, 412, 367,
|
||||
327, 292, 260, 231, 206, 184, 164, 146,
|
||||
130, 116, 103, 92, 82, 73, 65, 58,
|
||||
51, 46, 41, 36, 32, 29, 26, 23,
|
||||
20, 18, 16, 14, 13, 11, 10, 9,
|
||||
8, 7, 6, 5, 5, 4, 4, 3,
|
||||
3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
};
|
||||
|
|
|
|||
|
|
@ -1,5 +1,6 @@
|
|||
/* GStreamer
|
||||
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
|
||||
* <2006> Stefan Kost <ensonic@users.sf.net>
|
||||
*
|
||||
* This library is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU Library General Public
|
||||
|
|
@ -24,12 +25,33 @@
|
|||
|
||||
#include "gstspectrum.h"
|
||||
|
||||
GST_DEBUG_CATEGORY_STATIC (gst_spectrum_debug);
|
||||
#define GST_CAT_DEFAULT gst_spectrum_debug
|
||||
|
||||
/* elementfactory information */
|
||||
static const GstElementDetails gst_spectrum_details =
|
||||
GST_ELEMENT_DETAILS ("Spectrum analyzer",
|
||||
"Filter/Analyzer/Audio",
|
||||
"Run an FFT on the audio signal, output spectrum data",
|
||||
"Erik Walthinsen <omega@cse.ogi.edu>");
|
||||
"Erik Walthinsen <omega@cse.ogi.edu>,"
|
||||
"Stefan Kost <ensonic@users.sf.net>");
|
||||
|
||||
static GstStaticPadTemplate sink_template_factory =
|
||||
GST_STATIC_PAD_TEMPLATE ("sink",
|
||||
GST_PAD_SINK,
|
||||
GST_PAD_ALWAYS,
|
||||
GST_STATIC_CAPS ("audio/x-raw-int, "
|
||||
"rate = (int) [ 1, MAX ], "
|
||||
"channels = (int) 1, "
|
||||
"endianness = (int) BYTE_ORDER, "
|
||||
"width = (int) 16, " "depth = (int) 16, " "signed = (boolean) true")
|
||||
);
|
||||
|
||||
static GstStaticPadTemplate src_template_factory =
|
||||
GST_STATIC_PAD_TEMPLATE ("src",
|
||||
GST_PAD_SRC,
|
||||
GST_PAD_ALWAYS,
|
||||
GST_STATIC_CAPS_ANY);
|
||||
|
||||
/* Spectrum signals and args */
|
||||
enum
|
||||
|
|
@ -48,18 +70,17 @@ enum
|
|||
static void gst_spectrum_base_init (gpointer g_class);
|
||||
static void gst_spectrum_class_init (GstSpectrumClass * klass);
|
||||
static void gst_spectrum_init (GstSpectrum * spectrum);
|
||||
|
||||
static void gst_spectrum_dispose (GObject * object);
|
||||
static void gst_spectrum_set_property (GObject * object, guint prop_id,
|
||||
const GValue * value, GParamSpec * pspec);
|
||||
|
||||
static void gst_spectrum_chain (GstPad * pad, GstData * _data);
|
||||
static GstFlowReturn gst_spectrum_chain (GstPad * pad, GstBuffer * buffer);
|
||||
|
||||
#define fixed short
|
||||
int gst_spectrum_fix_fft (fixed fr[], fixed fi[], int m, int inverse);
|
||||
void gst_spectrum_fix_loud (fixed loud[], fixed fr[], fixed fi[], int n,
|
||||
extern int gst_spectrum_fix_fft (fixed fr[], fixed fi[], int m, int inverse);
|
||||
extern void gst_spectrum_fix_loud (fixed loud[], fixed fr[], fixed fi[], int n,
|
||||
int scale_shift);
|
||||
void gst_spectrum_window (fixed fr[], int n);
|
||||
|
||||
extern void gst_spectrum_window (fixed fr[], int n);
|
||||
|
||||
static GstElementClass *parent_class = NULL;
|
||||
|
||||
|
|
@ -83,9 +104,10 @@ gst_spectrum_get_type (void)
|
|||
(GInstanceInitFunc) gst_spectrum_init,
|
||||
};
|
||||
|
||||
spectrum_type =
|
||||
g_type_register_static (GST_TYPE_ELEMENT, "GstSpectrum", &spectrum_info,
|
||||
0);
|
||||
spectrum_type = g_type_register_static (GST_TYPE_ELEMENT, "GstSpectrum",
|
||||
&spectrum_info, 0);
|
||||
GST_DEBUG_CATEGORY_INIT (gst_spectrum_debug, "spectrum", 0,
|
||||
"audio spectrum analyser element");
|
||||
}
|
||||
return spectrum_type;
|
||||
}
|
||||
|
|
@ -95,113 +117,128 @@ gst_spectrum_base_init (gpointer g_class)
|
|||
{
|
||||
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
|
||||
|
||||
gst_element_class_add_pad_template (element_class,
|
||||
gst_static_pad_template_get (&sink_template_factory));
|
||||
gst_element_class_add_pad_template (element_class,
|
||||
gst_static_pad_template_get (&src_template_factory));
|
||||
gst_element_class_set_details (element_class, &gst_spectrum_details);
|
||||
}
|
||||
|
||||
static void
|
||||
gst_spectrum_class_init (GstSpectrumClass * klass)
|
||||
{
|
||||
GObjectClass *gobject_class;
|
||||
|
||||
gobject_class = (GObjectClass *) klass;
|
||||
GObjectClass *gobject_class = (GObjectClass *) klass;
|
||||
|
||||
parent_class = g_type_class_peek_parent (klass);
|
||||
|
||||
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