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-rw-r--r--gst/spectrum/demo-osssrc.c78
-rw-r--r--gst/spectrum/fix_fft.c643
-rw-r--r--gst/spectrum/gstspectrum.c157
-rw-r--r--gst/spectrum/gstspectrum.h33
4 files changed, 458 insertions, 453 deletions
diff --git a/gst/spectrum/demo-osssrc.c b/gst/spectrum/demo-osssrc.c
index 3431ec91..462fcf90 100644
--- a/gst/spectrum/demo-osssrc.c
+++ b/gst/spectrum/demo-osssrc.c
@@ -3,12 +3,14 @@
extern gboolean _gst_plugin_spew;
-void spectrum_chain(GstPad *pad,GstData *_data);
-gboolean idle_func(gpointer data);
+void spectrum_chain (GstPad * pad, GstData * _data);
+gboolean idle_func (gpointer data);
GtkWidget *drawingarea;
-int main(int argc,char *argv[]) {
+int
+main (int argc, char *argv[])
+{
GstElement *bin;
GstElementFactory *srcfactory;
GstElement *src;
@@ -20,63 +22,67 @@ int main(int argc,char *argv[]) {
_gst_plugin_spew = TRUE;
- gst_init(&argc,&argv);
- gnome_init("Spectrum","0.0.1",argc,argv);
+ gst_init (&argc, &argv);
+ gnome_init ("Spectrum", "0.0.1", argc, argv);
- bin = gst_bin_new("bin");
+ bin = gst_bin_new ("bin");
- srcfactory = gst_element_factory_find("osssrc");
- spectrumfactory = gst_element_factory_find("gstspectrum");
+ srcfactory = gst_element_factory_find ("osssrc");
+ spectrumfactory = gst_element_factory_find ("gstspectrum");
- src = gst_element_factory_create(srcfactory,"src");
- gtk_object_set(GTK_OBJECT(src),"bytes_per_read",(gulong)1024,NULL);
- spectrum = gst_element_factory_create(spectrumfactory,"spectrum");
- gtk_object_set(GTK_OBJECT(spectrum),"width",256,NULL);
+ src = gst_element_factory_create (srcfactory, "src");
+ gtk_object_set (GTK_OBJECT (src), "bytes_per_read", (gulong) 1024, NULL);
+ spectrum = gst_element_factory_create (spectrumfactory, "spectrum");
+ gtk_object_set (GTK_OBJECT (spectrum), "width", 256, NULL);
- gst_bin_add(GST_BIN(bin),GST_ELEMENT(src));
- gst_bin_add(GST_BIN(bin),GST_ELEMENT(spectrum));
+ gst_bin_add (GST_BIN (bin), GST_ELEMENT (src));
+ gst_bin_add (GST_BIN (bin), GST_ELEMENT (spectrum));
- gst_pad_link(gst_element_get_pad(src,"src"),
- gst_element_get_pad(spectrum,"sink"));
+ gst_pad_link (gst_element_get_pad (src, "src"),
+ gst_element_get_pad (spectrum, "sink"));
- spectrumpad = gst_pad_new("sink",GST_PAD_SINK);
- gst_pad_set_chain_function(spectrumpad,spectrum_chain);
+ spectrumpad = gst_pad_new ("sink", GST_PAD_SINK);
+ gst_pad_set_chain_function (spectrumpad, spectrum_chain);
- gst_pad_link(gst_element_get_pad(spectrum,"src"),spectrumpad);
+ gst_pad_link (gst_element_get_pad (spectrum, "src"), spectrumpad);
- appwindow = gnome_app_new("spectrum","Spectrum");
- drawingarea = gtk_drawing_area_new();
- gtk_drawing_area_size(GTK_DRAWING_AREA(drawingarea),256,32);
- gnome_app_set_contents(GNOME_APP(appwindow),drawingarea);
- gtk_widget_show_all(appwindow);
+ appwindow = gnome_app_new ("spectrum", "Spectrum");
+ drawingarea = gtk_drawing_area_new ();
+ gtk_drawing_area_size (GTK_DRAWING_AREA (drawingarea), 256, 32);
+ gnome_app_set_contents (GNOME_APP (appwindow), drawingarea);
+ gtk_widget_show_all (appwindow);
- gst_element_set_state(GST_ELEMENT(bin),GST_STATE_READY);
- gst_element_set_state(GST_ELEMENT(bin),GST_STATE_PLAYING);
+ gst_element_set_state (GST_ELEMENT (bin), GST_STATE_READY);
+ gst_element_set_state (GST_ELEMENT (bin), GST_STATE_PLAYING);
- g_idle_add(idle_func,src);
+ g_idle_add (idle_func, src);
- gtk_main();
+ gtk_main ();
return 0;
}
-void spectrum_chain(GstPad *pad,GstData *_data) {
+void
+spectrum_chain (GstPad * pad, GstData * _data)
+{
GstBuffer *buf = GST_BUFFER (_data);
gint i;
guchar *data = buf->data;
- 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++) {
- gdk_draw_rectangle(drawingarea->window,drawingarea->style->white_gc,
- TRUE,i,32-data[i],1,data[i]);
+ 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++) {
+ gdk_draw_rectangle (drawingarea->window, drawingarea->style->white_gc,
+ TRUE, i, 32 - data[i], 1, data[i]);
}
- gst_buffer_unref(buf);
+ gst_buffer_unref (buf);
}
-gboolean idle_func(gpointer data) {
+gboolean
+idle_func (gpointer data)
+{
/*gst_src_push(GST_SRC(data)); */
return TRUE;
}
diff --git a/gst/spectrum/fix_fft.c b/gst/spectrum/fix_fft.c
index a5dd658f..db6c3a82 100644
--- a/gst/spectrum/fix_fft.c
+++ b/gst/spectrum/fix_fft.c
@@ -67,8 +67,8 @@
extern fixed gst_spectrum_Sinewave[N_WAVE]; /* placed at end of this file for clarity */
extern fixed 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);
+static int gst_spectrum_db_from_ampl (fixed re, fixed im);
+static fixed gst_spectrum_fix_mpy (fixed a, fixed b);
/*
fix_fft() - perform fast Fourier transform.
@@ -78,127 +78,119 @@ static fixed gst_spectrum_fix_mpy(fixed a, fixed b);
size of data = 2**m
set inverse to 0=dft, 1=idft
*/
-int gst_spectrum_fix_fft(fixed fr[], fixed fi[], int m, int inverse) {
- int mr, nn, i, j, l, k, istep, n, scale, shift;
- fixed qr, qi, tr, ti, wr, wi;
-
- n = 1 << m;
-
- if (n > N_WAVE)
- return -1;
-
- mr = 0;
- nn = n - 1;
- scale = 0;
-
- /* decimation in time - re-order data */
- for (m = 1; m <= nn; ++m)
- {
- l = n;
- do
- {
- l >>= 1;
- }
- while (mr + l > nn);
- mr = (mr & (l - 1)) + l;
-
- if (mr <= m)
- continue;
- tr = fr[m];
- fr[m] = fr[mr];
- fr[mr] = tr;
- ti = fi[m];
- fi[m] = fi[mr];
- fi[mr] = ti;
+int
+gst_spectrum_fix_fft (fixed fr[], fixed fi[], int m, int inverse)
+{
+ int mr, nn, i, j, l, k, istep, n, scale, shift;
+ fixed qr, qi, tr, ti, wr, wi;
+
+ n = 1 << m;
+
+ if (n > N_WAVE)
+ return -1;
+
+ mr = 0;
+ nn = n - 1;
+ scale = 0;
+
+ /* decimation in time - re-order data */
+ for (m = 1; m <= nn; ++m) {
+ l = n;
+ do {
+ l >>= 1;
+ }
+ while (mr + l > nn);
+ mr = (mr & (l - 1)) + l;
+
+ if (mr <= m)
+ continue;
+ tr = fr[m];
+ fr[m] = fr[mr];
+ fr[mr] = tr;
+ ti = fi[m];
+ fi[m] = fi[mr];
+ fi[mr] = ti;
+ }
+
+ l = 1;
+ k = LOG2_N_WAVE - 1;
+ while (l < n) {
+ if (inverse) {
+ /* variable scaling, depending upon data */
+ shift = 0;
+ for (i = 0; i < n; ++i) {
+ j = fr[i];
+ if (j < 0)
+ j = -j;
+ m = fi[i];
+ if (m < 0)
+ m = -m;
+ if (j > 16383 || m > 16383) {
+ shift = 1;
+ break;
}
-
- l = 1;
- k = LOG2_N_WAVE - 1;
- while (l < n)
- {
- if (inverse)
- {
- /* variable scaling, depending upon data */
- shift = 0;
- for (i = 0; i < n; ++i)
- {
- j = fr[i];
- if (j < 0)
- j = -j;
- m = fi[i];
- if (m < 0)
- m = -m;
- if (j > 16383 || m > 16383)
- {
- shift = 1;
- break;
- }
- }
- if (shift)
- ++scale;
- }
- else
- {
- /* fixed scaling, for proper normalization -
- there will be log2(n) passes, so this
- results in an overall factor of 1/n,
- distributed to maximize arithmetic accuracy. */
- shift = 1;
- }
- /* it may not be obvious, but the shift will be performed
- on each data point exactly once, during this pass. */
- istep = l << 1;
- for (m = 0; m < l; ++m)
- {
- j = m << k;
- /* 0 <= j < N_WAVE/2 */
- wr = gst_spectrum_Sinewave[j + N_WAVE / 4];
- wi = -gst_spectrum_Sinewave[j];
- if (inverse)
- wi = -wi;
- if (shift)
- {
- wr >>= 1;
- wi >>= 1;
- }
- for (i = m; i < n; i += istep)
- {
- j = i + l;
- tr = gst_spectrum_fix_mpy(wr, fr[j]) -
- gst_spectrum_fix_mpy(wi, fi[j]);
- ti = gst_spectrum_fix_mpy(wr, fi[j]) +
- gst_spectrum_fix_mpy(wi, fr[j]);
- qr = fr[i];
- qi = fi[i];
- if (shift)
- {
- qr >>= 1;
- qi >>= 1;
- }
- fr[j] = qr - tr;
- fi[j] = qi - ti;
- fr[i] = qr + tr;
- fi[i] = qi + ti;
- }
- }
- --k;
- l = istep;
+ }
+ if (shift)
+ ++scale;
+ } else {
+ /* fixed scaling, for proper normalization -
+ there will be log2(n) passes, so this
+ results in an overall factor of 1/n,
+ distributed to maximize arithmetic accuracy. */
+ shift = 1;
+ }
+ /* it may not be obvious, but the shift will be performed
+ on each data point exactly once, during this pass. */
+ istep = l << 1;
+ for (m = 0; m < l; ++m) {
+ j = m << k;
+ /* 0 <= j < N_WAVE/2 */
+ wr = gst_spectrum_Sinewave[j + N_WAVE / 4];
+ wi = -gst_spectrum_Sinewave[j];
+ if (inverse)
+ wi = -wi;
+ if (shift) {
+ wr >>= 1;
+ wi >>= 1;
+ }
+ for (i = m; i < n; i += istep) {
+ j = i + l;
+ tr = gst_spectrum_fix_mpy (wr, fr[j]) -
+ gst_spectrum_fix_mpy (wi, fi[j]);
+ ti = gst_spectrum_fix_mpy (wr, fi[j]) +
+ gst_spectrum_fix_mpy (wi, fr[j]);
+ qr = fr[i];
+ qi = fi[i];
+ if (shift) {
+ qr >>= 1;
+ qi >>= 1;
}
-
- return scale;
+ fr[j] = qr - tr;
+ fi[j] = qi - ti;
+ fr[i] = qr + tr;
+ fi[i] = qi + ti;
+ }
+ }
+ --k;
+ l = istep;
+ }
+
+ return scale;
}
/* window() - apply a Hanning window */
-void gst_spectrum_window(fixed fr[], int n) {
- int i, j, k;
-
- j = N_WAVE / n;
- n >>= 1;
- for (i = 0, k = N_WAVE / 4; i < n; ++i, k += j)
- FIX_MPY(fr[i], fr[i], 16384 - (gst_spectrum_Sinewave[k] >> 1));
- n <<= 1;
- for (k -= j; i < n; ++i, k -= j)
- FIX_MPY(fr[i], fr[i], 16384 - (gst_spectrum_Sinewave[k] >> 1));
+void
+gst_spectrum_window (fixed fr[], int n)
+{
+ int i, j, k;
+
+ j = N_WAVE / n;
+ n >>= 1;
+ for (i = 0, k = N_WAVE / 4; i < n; ++i, k += j)
+ FIX_MPY (fr[i], fr[i], 16384 - (gst_spectrum_Sinewave[k] >> 1));
+ n <<= 1;
+ for (k -= j; i < n; ++i, k -= j)
+ FIX_MPY (fr[i], fr[i], 16384 - (gst_spectrum_Sinewave[k] >> 1));
}
/* fix_loud() - compute loudness of freq-vis components.
@@ -208,73 +200,81 @@ void gst_spectrum_window(fixed fr[], int n) {
was obtained from an inverse FFT, 0 otherwise.
loud[] is the loudness, in dB wrt 32767; will be +10 to -N_LOUD.
*/
-void gst_spectrum_fix_loud(fixed loud[], fixed fr[], fixed fi[], int n, int scale_shift) {
- int i, max;
-
- max = 0;
- if (scale_shift > 0)
- max = 10;
- scale_shift = (scale_shift + 1) * 6;
-
- for (i = 0; i < n; ++i)
- {
- loud[i] = gst_spectrum_db_from_ampl(fr[i], fi[i]) + scale_shift;
- if (loud[i] > max)
- loud[i] = max;
- }
+void
+gst_spectrum_fix_loud (fixed loud[], fixed fr[], fixed fi[], int n,
+ int scale_shift)
+{
+ int i, max;
+
+ max = 0;
+ if (scale_shift > 0)
+ max = 10;
+ scale_shift = (scale_shift + 1) * 6;
+
+ for (i = 0; i < n; ++i) {
+ loud[i] = gst_spectrum_db_from_ampl (fr[i], fi[i]) + scale_shift;
+ if (loud[i] > max)
+ loud[i] = max;
+ }
}
/* db_from_ampl() - find loudness (in dB) from
the complex amplitude.
*/
-int gst_spectrum_db_from_ampl(fixed re, fixed im) {
- static long loud2[N_LOUD] =
- {0};
- long v;
- int i;
-
- if (loud2[0] == 0)
- {
- loud2[0] = (long) gst_spectrum_Loudampl[0] * (long) gst_spectrum_Loudampl[0];
- for (i = 1; i < N_LOUD; ++i)
- {
- v = (long) gst_spectrum_Loudampl[i] * (long) gst_spectrum_Loudampl[i];
- loud2[i] = v;
- loud2[i - 1] = (loud2[i - 1] + v) / 2;
- }
- }
-
- v = (long) re *(long) re + (long) im *(long) im;
-
- for (i = 0; i < N_LOUD; ++i)
- if (loud2[i] <= v)
- break;
-
- return (-i);
+int
+gst_spectrum_db_from_ampl (fixed re, fixed im)
+{
+ static long loud2[N_LOUD] = { 0 };
+ long v;
+ int i;
+
+ if (loud2[0] == 0) {
+ loud2[0] =
+ (long) gst_spectrum_Loudampl[0] * (long) gst_spectrum_Loudampl[0];
+ for (i = 1; i < N_LOUD; ++i) {
+ v = (long) gst_spectrum_Loudampl[i] * (long) gst_spectrum_Loudampl[i];
+ loud2[i] = v;
+ loud2[i - 1] = (loud2[i - 1] + v) / 2;
+ }
+ }
+
+ v = (long) re *(long) re + (long) im *(long) im;
+
+ for (i = 0; i < N_LOUD; ++i)
+ if (loud2[i] <= v)
+ break;
+
+ return (-i);
}
/*
fix_mpy() - fixed-point multiplication
*/
-fixed gst_spectrum_fix_mpy(fixed a, fixed b) {
- FIX_MPY(a, a, b);
- return a;
+fixed
+gst_spectrum_fix_mpy (fixed a, fixed b)
+{
+ FIX_MPY (a, a, b);
+ return a;
}
/*
iscale() - scale an integer value by (numer/denom)
*/
-int gst_spectrum_iscale(int value, int numer, int denom) {
- return (long) value *(long) numer / (long) denom;
+int
+gst_spectrum_iscale (int value, int numer, int denom)
+{
+ return (long) value *(long) numer / (long) denom;
}
/*
fix_dot() - dot product of two fixed arrays
*/
-fixed gst_spectrum_fix_dot(fixed * hpa, fixed * pb, int n) {
- fixed *pa = hpa; /* FIXME */
- long sum;
- register fixed a, b;
+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);
@@ -282,174 +282,169 @@ fixed gst_spectrum_fix_dot(fixed * hpa, fixed * pb, int n) {
off &= 0x000F;
pa = MK_FP(seg,off);
*/
- sum = 0L;
- while (n--)
- {
- a = *pa++;
- b = *pb++;
- FIX_MPY(a, a, b);
- sum += a;
- }
+ sum = 0L;
+ while (n--) {
+ a = *pa++;
+ b = *pb++;
+ FIX_MPY (a, a, b);
+ sum += a;
+ }
- if (sum > 0x7FFF)
- sum = 0x7FFF;
- else if (sum < -0x7FFF)
- sum = -0x7FFF;
+ if (sum > 0x7FFF)
+ sum = 0x7FFF;
+ else if (sum < -0x7FFF)
+ sum = -0x7FFF;
- return (fixed) sum;
+ return (fixed) sum;
}
#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 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 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,};
diff --git a/gst/spectrum/gstspectrum.c b/gst/spectrum/gstspectrum.c
index 920d69ee..aa309f1c 100644
--- a/gst/spectrum/gstspectrum.c
+++ b/gst/spectrum/gstspectrum.c
@@ -25,40 +25,44 @@
#include "gstspectrum.h"
/* elementfactory information */
-static 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>"
-);
+static 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>");
/* Spectrum signals and args */
-enum {
+enum
+{
/* FILL ME */
LAST_SIGNAL
};
-enum {
+enum
+{
ARG_0,
ARG_WIDTH,
};
-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_base_init (gpointer g_class);
+static void gst_spectrum_class_init (GstSpectrumClass * klass);
+static void gst_spectrum_init (GstSpectrum * spectrum);
-static void gst_spectrum_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec);
+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 void gst_spectrum_chain (GstPad * pad, GstData * _data);
#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, int scale_shift);
-void gst_spectrum_window(fixed fr[], int n);
+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,
+ int scale_shift);
+void gst_spectrum_window (fixed fr[], int n);
static GstElementClass *parent_class = NULL;
+
/*static guint gst_spectrum_signals[LAST_SIGNAL] = { 0 }; */
GType
@@ -68,17 +72,19 @@ gst_spectrum_get_type (void)
if (!spectrum_type) {
static const GTypeInfo spectrum_info = {
- sizeof(GstSpectrumClass),
+ sizeof (GstSpectrumClass),
gst_spectrum_base_init,
NULL,
- (GClassInitFunc)gst_spectrum_class_init,
+ (GClassInitFunc) gst_spectrum_class_init,
NULL,
NULL,
- sizeof(GstSpectrum),
+ sizeof (GstSpectrum),
0,
- (GInstanceInitFunc)gst_spectrum_init,
+ (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);
}
return spectrum_type;
}
@@ -91,41 +97,40 @@ gst_spectrum_base_init (gpointer g_class)
gst_element_class_set_details (element_class, &gst_spectrum_details);
}
static void
-gst_spectrum_class_init (GstSpectrumClass *klass)
+gst_spectrum_class_init (GstSpectrumClass * klass)
{
GObjectClass *gobject_class;
- gobject_class = (GObjectClass*)klass;
+ gobject_class = (GObjectClass *) klass;
- parent_class = g_type_class_ref(GST_TYPE_ELEMENT);
+ 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_WRITABLE)); /* CHECKME */
+ 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;
}
static void
-gst_spectrum_init (GstSpectrum *spectrum)
+gst_spectrum_init (GstSpectrum * spectrum)
{
- spectrum->sinkpad = gst_pad_new("sink",GST_PAD_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);
- gst_element_add_pad(GST_ELEMENT(spectrum),spectrum->srcpad);
+ spectrum->sinkpad = gst_pad_new ("sink", GST_PAD_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);
+ gst_element_add_pad (GST_ELEMENT (spectrum), spectrum->srcpad);
spectrum->width = 75;
}
static void
-gst_spectrum_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
+gst_spectrum_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec)
{
GstSpectrum *spectrum;
/* it's not null if we got it, but it might not be ours */
- g_return_if_fail(GST_IS_SPECTRUM(object));
- spectrum = GST_SPECTRUM(object);
+ g_return_if_fail (GST_IS_SPECTRUM (object));
+ spectrum = GST_SPECTRUM (object);
switch (prop_id) {
case ARG_WIDTH:
@@ -137,48 +142,49 @@ gst_spectrum_set_property (GObject *object, guint prop_id, const GValue *value,
}
static void
-gst_spectrum_chain (GstPad *pad, GstData *_data)
+gst_spectrum_chain (GstPad * pad, GstData * _data)
{
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, 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);
+ 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(buf);
+ samples = (gint16 *) GST_BUFFER_DATA (buf);
spec_base = 8;
spec_len = 1024;
- 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);
+ 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);
- memset(im,0,spec_len * sizeof(gint16));
+ 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;
+ 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);
- spect = (guchar *)g_malloc(spectrum->width);
- for (i=0,pos=0;i<spectrum->width;i++,pos += step) {
+ 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);
+ 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
@@ -186,32 +192,27 @@ gst_spectrum_chain (GstPad *pad, GstData *_data)
/* if (spect[i] > 15); */
/* spect[i] = 15; */
}
- g_free(loud);
- gst_buffer_unref(buf);
+ g_free (loud);
+ gst_buffer_unref (buf);
/* g_free(samples); */
- newbuf = gst_buffer_new();
- g_return_if_fail(newbuf != NULL);
- GST_BUFFER_DATA(newbuf) = spect;
- GST_BUFFER_SIZE(newbuf) = spectrum->width;
+ 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));
+ gst_pad_push (spectrum->srcpad, GST_DATA (newbuf));
}
static gboolean
-plugin_init (GstPlugin *plugin)
+plugin_init (GstPlugin * plugin)
{
- return gst_element_register (plugin, "spectrum", GST_RANK_NONE, GST_TYPE_SPECTRUM);
+ return gst_element_register (plugin, "spectrum", GST_RANK_NONE,
+ GST_TYPE_SPECTRUM);
}
-GST_PLUGIN_DEFINE (
- GST_VERSION_MAJOR,
- GST_VERSION_MINOR,
- "spectrum",
- "Run an FFT on the audio signal, output spectrum data",
- plugin_init,
- VERSION,
- GST_LICENSE,
- GST_PACKAGE,
- GST_ORIGIN
-)
+GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
+ GST_VERSION_MINOR,
+ "spectrum",
+ "Run an FFT on the audio signal, output spectrum data",
+ plugin_init, VERSION, GST_LICENSE, GST_PACKAGE, GST_ORIGIN)
diff --git a/gst/spectrum/gstspectrum.h b/gst/spectrum/gstspectrum.h
index 8cc546ec..23c4ef4b 100644
--- a/gst/spectrum/gstspectrum.h
+++ b/gst/spectrum/gstspectrum.h
@@ -26,8 +26,9 @@
#ifdef __cplusplus
-extern "C" {
-#endif /* __cplusplus */
+extern "C"
+{
+#endif /* __cplusplus */
#define GST_TYPE_SPECTRUM \
@@ -41,27 +42,29 @@ extern "C" {
#define GST_IS_SPECTRUM_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_SPECTRUM))
-typedef struct _GstSpectrum GstSpectrum;
-typedef struct _GstSpectrumClass GstSpectrumClass;
+ typedef struct _GstSpectrum GstSpectrum;
+ typedef struct _GstSpectrumClass GstSpectrumClass;
-struct _GstSpectrum {
- GstElement element;
+ struct _GstSpectrum
+ {
+ GstElement element;
- GstPad *sinkpad,*srcpad;
+ GstPad *sinkpad, *srcpad;
- gint width;
-};
+ gint width;
+ };
-struct _GstSpectrumClass {
- GstElementClass parent_class;
-};
+ struct _GstSpectrumClass
+ {
+ GstElementClass parent_class;
+ };
-GType gst_spectrum_get_type(void);
+ GType gst_spectrum_get_type (void);
#ifdef __cplusplus
}
-#endif /* __cplusplus */
+#endif /* __cplusplus */
-#endif /* __GST_SPECTRUM_H__ */
+#endif /* __GST_SPECTRUM_H__ */
generated by cgit v1.2.1 (git 2.18.0) at 2024-08-10 08:42:51 +0000