mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-09-09 05:38:58 +00:00
451 lines
13 KiB
C
451 lines
13 KiB
C
/* GStreamer
|
|
* Copyright (C) <2011> Stefan Kost <ensonic@users.sf.net>
|
|
*
|
|
* gstspacescope.c: simple stereo visualizer
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Library General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Library General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Library General Public
|
|
* License along with this library; if not, write to the
|
|
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
|
|
* Boston, MA 02110-1301, USA.
|
|
*/
|
|
/**
|
|
* SECTION:element-spacescope
|
|
* @title: spacescope
|
|
* @see_also: goom
|
|
*
|
|
* Spacescope is a simple audio visualisation element. It maps the left and
|
|
* right channel to x and y coordinates.
|
|
*
|
|
* ## Example launch line
|
|
* |[
|
|
* gst-launch-1.0 audiotestsrc ! audioconvert ! spacescope ! ximagesink
|
|
* ]|
|
|
*
|
|
*/
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include <stdlib.h>
|
|
#include "gstspacescope.h"
|
|
|
|
#if G_BYTE_ORDER == G_BIG_ENDIAN
|
|
#define RGB_ORDER "xRGB"
|
|
#else
|
|
#define RGB_ORDER "BGRx"
|
|
#endif
|
|
|
|
static GstStaticPadTemplate gst_space_scope_src_template =
|
|
GST_STATIC_PAD_TEMPLATE ("src",
|
|
GST_PAD_SRC,
|
|
GST_PAD_ALWAYS,
|
|
GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE (RGB_ORDER))
|
|
);
|
|
|
|
static GstStaticPadTemplate gst_space_scope_sink_template =
|
|
GST_STATIC_PAD_TEMPLATE ("sink",
|
|
GST_PAD_SINK,
|
|
GST_PAD_ALWAYS,
|
|
GST_STATIC_CAPS ("audio/x-raw, "
|
|
"format = (string) " GST_AUDIO_NE (S16) ", "
|
|
"layout = (string) interleaved, "
|
|
"rate = (int) [ 8000, 96000 ], "
|
|
"channels = (int) 2, " "channel-mask = (bitmask) 0x3")
|
|
);
|
|
|
|
|
|
GST_DEBUG_CATEGORY_STATIC (space_scope_debug);
|
|
#define GST_CAT_DEFAULT space_scope_debug
|
|
|
|
enum
|
|
{
|
|
PROP_0,
|
|
PROP_STYLE
|
|
};
|
|
|
|
enum
|
|
{
|
|
STYLE_DOTS = 0,
|
|
STYLE_LINES,
|
|
STYLE_COLOR_DOTS,
|
|
STYLE_COLOR_LINES,
|
|
NUM_STYLES
|
|
};
|
|
|
|
#define GST_TYPE_SPACE_SCOPE_STYLE (gst_space_scope_style_get_type ())
|
|
static GType
|
|
gst_space_scope_style_get_type (void)
|
|
{
|
|
static GType gtype = 0;
|
|
|
|
if (gtype == 0) {
|
|
static const GEnumValue values[] = {
|
|
{STYLE_DOTS, "draw dots (default)", "dots"},
|
|
{STYLE_LINES, "draw lines", "lines"},
|
|
{STYLE_COLOR_DOTS, "draw color dots", "color-dots"},
|
|
{STYLE_COLOR_LINES, "draw color lines", "color-lines"},
|
|
{0, NULL, NULL}
|
|
};
|
|
|
|
gtype = g_enum_register_static ("GstSpaceScopeStyle", values);
|
|
}
|
|
return gtype;
|
|
}
|
|
|
|
static void gst_space_scope_set_property (GObject * object, guint prop_id,
|
|
const GValue * value, GParamSpec * pspec);
|
|
static void gst_space_scope_get_property (GObject * object, guint prop_id,
|
|
GValue * value, GParamSpec * pspec);
|
|
|
|
static void render_dots (GstAudioVisualizer * base, guint32 * vdata,
|
|
gint16 * adata, guint num_samples);
|
|
static void render_lines (GstAudioVisualizer * base, guint32 * vdata,
|
|
gint16 * adata, guint num_samples);
|
|
static void render_color_dots (GstAudioVisualizer * base, guint32 * vdata,
|
|
gint16 * adata, guint num_samples);
|
|
static void render_color_lines (GstAudioVisualizer * base, guint32 * vdata,
|
|
gint16 * adata, guint num_samples);
|
|
|
|
static gboolean gst_space_scope_render (GstAudioVisualizer * scope,
|
|
GstBuffer * audio, GstVideoFrame * video);
|
|
|
|
|
|
G_DEFINE_TYPE_WITH_CODE (GstSpaceScope, gst_space_scope,
|
|
GST_TYPE_AUDIO_VISUALIZER, GST_DEBUG_CATEGORY_INIT (space_scope_debug,
|
|
"spacescope", 0, "spacescope"););
|
|
GST_ELEMENT_REGISTER_DEFINE (spacescope, "spacescope", GST_RANK_NONE,
|
|
GST_TYPE_SPACE_SCOPE);
|
|
|
|
static void
|
|
gst_space_scope_class_init (GstSpaceScopeClass * g_class)
|
|
{
|
|
GObjectClass *gobject_class = (GObjectClass *) g_class;
|
|
GstElementClass *element_class = (GstElementClass *) g_class;
|
|
GstAudioVisualizerClass *scope_class = (GstAudioVisualizerClass *) g_class;
|
|
|
|
gst_element_class_set_static_metadata (element_class, "Stereo visualizer",
|
|
"Visualization",
|
|
"Simple stereo visualizer", "Stefan Kost <ensonic@users.sf.net>");
|
|
|
|
gst_element_class_add_static_pad_template (element_class,
|
|
&gst_space_scope_src_template);
|
|
gst_element_class_add_static_pad_template (element_class,
|
|
&gst_space_scope_sink_template);
|
|
|
|
gobject_class->set_property = gst_space_scope_set_property;
|
|
gobject_class->get_property = gst_space_scope_get_property;
|
|
|
|
scope_class->render = GST_DEBUG_FUNCPTR (gst_space_scope_render);
|
|
|
|
g_object_class_install_property (gobject_class, PROP_STYLE,
|
|
g_param_spec_enum ("style", "drawing style",
|
|
"Drawing styles for the space scope display.",
|
|
GST_TYPE_SPACE_SCOPE_STYLE, STYLE_DOTS,
|
|
G_PARAM_CONSTRUCT | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
|
|
gst_type_mark_as_plugin_api (GST_TYPE_SPACE_SCOPE_STYLE, 0);
|
|
}
|
|
|
|
static void
|
|
gst_space_scope_init (GstSpaceScope * scope)
|
|
{
|
|
/* do nothing */
|
|
}
|
|
|
|
static void
|
|
gst_space_scope_set_property (GObject * object, guint prop_id,
|
|
const GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstSpaceScope *scope = GST_SPACE_SCOPE (object);
|
|
|
|
switch (prop_id) {
|
|
case PROP_STYLE:
|
|
scope->style = g_value_get_enum (value);
|
|
switch (scope->style) {
|
|
case STYLE_DOTS:
|
|
scope->process = render_dots;
|
|
break;
|
|
case STYLE_LINES:
|
|
scope->process = render_lines;
|
|
break;
|
|
case STYLE_COLOR_DOTS:
|
|
scope->process = render_color_dots;
|
|
break;
|
|
case STYLE_COLOR_LINES:
|
|
scope->process = render_color_lines;
|
|
break;
|
|
}
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_space_scope_get_property (GObject * object, guint prop_id,
|
|
GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstSpaceScope *scope = GST_SPACE_SCOPE (object);
|
|
|
|
switch (prop_id) {
|
|
case PROP_STYLE:
|
|
g_value_set_enum (value, scope->style);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
#include "gstdrawhelpers.h"
|
|
|
|
static void
|
|
render_dots (GstAudioVisualizer * base, guint32 * vdata, gint16 * adata,
|
|
guint num_samples)
|
|
{
|
|
guint i, s, x, y, ox, oy;
|
|
gfloat dx, dy;
|
|
guint w = GST_VIDEO_INFO_WIDTH (&base->vinfo);
|
|
guint h = GST_VIDEO_INFO_HEIGHT (&base->vinfo);
|
|
|
|
/* draw dots 1st channel x, 2nd channel y */
|
|
dx = w / 65536.0;
|
|
ox = w / 2;
|
|
dy = h / 65536.0;
|
|
oy = h / 2;
|
|
s = 0;
|
|
for (i = 0; i < num_samples; i++) {
|
|
x = (guint) (ox + (gfloat) adata[s++] * dx);
|
|
y = (guint) (oy + (gfloat) adata[s++] * dy);
|
|
draw_dot (vdata, x, y, w, 0x00FFFFFF);
|
|
}
|
|
}
|
|
|
|
static void
|
|
render_lines (GstAudioVisualizer * base, guint32 * vdata, gint16 * adata,
|
|
guint num_samples)
|
|
{
|
|
guint i, s, x, y, ox, oy;
|
|
gfloat dx, dy;
|
|
guint w = GST_VIDEO_INFO_WIDTH (&base->vinfo);
|
|
guint h = GST_VIDEO_INFO_HEIGHT (&base->vinfo);
|
|
gint x2, y2;
|
|
|
|
/* draw lines 1st channel x, 2nd channel y */
|
|
dx = (w - 1) / 65536.0;
|
|
ox = (w - 1) / 2;
|
|
dy = (h - 1) / 65536.0;
|
|
oy = (h - 1) / 2;
|
|
s = 0;
|
|
x2 = (guint) (ox + (gfloat) adata[s++] * dx);
|
|
y2 = (guint) (oy + (gfloat) adata[s++] * dy);
|
|
for (i = 1; i < num_samples; i++) {
|
|
x = (guint) (ox + (gfloat) adata[s++] * dx);
|
|
y = (guint) (oy + (gfloat) adata[s++] * dy);
|
|
draw_line_aa (vdata, x2, x, y2, y, w, 0x00FFFFFF);
|
|
x2 = x;
|
|
y2 = y;
|
|
}
|
|
}
|
|
|
|
#define CUTOFF_1 0.15
|
|
#define CUTOFF_2 0.45
|
|
#define RESONANCE (1.0/0.5)
|
|
|
|
#define filter(il, ir) G_STMT_START { \
|
|
f1l_h = il - (f1l_m * RESONANCE) - f1l_l; \
|
|
f1l_m += (f1l_h * CUTOFF_1); \
|
|
f1l_l += (f1l_m * CUTOFF_1); \
|
|
\
|
|
f2l_h = (f1l_m + f1l_h) - (f2l_m * RESONANCE) - f2l_l; \
|
|
f2l_m += (f2l_h * CUTOFF_2); \
|
|
f2l_l += (f2l_m * CUTOFF_2); \
|
|
\
|
|
f1r_h = ir - (f1r_m * RESONANCE) - f1r_l; \
|
|
f1r_m += (f1r_h * CUTOFF_1); \
|
|
f1r_l += (f1r_m * CUTOFF_1); \
|
|
\
|
|
f2r_h = (f1r_m + f1r_h) - (f2r_m * RESONANCE) - f2r_l; \
|
|
f2r_m += (f2r_h * CUTOFF_2); \
|
|
f2r_l += (f2r_m * CUTOFF_2); \
|
|
} G_STMT_END
|
|
|
|
static void
|
|
render_color_dots (GstAudioVisualizer * base, guint32 * vdata,
|
|
gint16 * adata, guint num_samples)
|
|
{
|
|
GstSpaceScope *scope = (GstSpaceScope *) base;
|
|
guint i, s;
|
|
gint x, y, ox, oy;
|
|
gfloat dx, dy;
|
|
gint w = GST_VIDEO_INFO_WIDTH (&base->vinfo), w1 = w - 2;
|
|
gint h = GST_VIDEO_INFO_HEIGHT (&base->vinfo), h1 = h - 2;
|
|
gdouble il, ir;
|
|
gdouble f1l_l = scope->f1l_l, f1l_m = scope->f1l_m, f1l_h = scope->f1l_h;
|
|
gdouble f1r_l = scope->f1r_l, f1r_m = scope->f1r_m, f1r_h = scope->f1r_h;
|
|
gdouble f2l_l = scope->f2l_l, f2l_m = scope->f2l_m, f2l_h = scope->f2l_h;
|
|
gdouble f2r_l = scope->f2r_l, f2r_m = scope->f2r_m, f2r_h = scope->f2r_h;
|
|
|
|
/* draw dots 1st channel x, 2nd channel y */
|
|
ox = w / 2;
|
|
oy = h / 2;
|
|
dx = w / 65536.0;
|
|
dy = h / 65536.0;
|
|
s = 0;
|
|
for (i = 0; i < num_samples; i++) {
|
|
il = (gdouble) adata[s++];
|
|
ir = (gdouble) adata[s++];
|
|
|
|
filter (il, ir);
|
|
|
|
x = (gint) (ox + f1l_l * dx);
|
|
y = (gint) (oy + f1r_l * dy);
|
|
x = CLAMP (x, 0, w1);
|
|
y = CLAMP (y, 0, h1);
|
|
draw_dot_c (vdata, x, y, w, 0x00FF0000);
|
|
|
|
x = (gint) (ox + f2l_l * dx);
|
|
y = (gint) (oy + f2r_l * dy);
|
|
x = CLAMP (x, 0, w1);
|
|
y = CLAMP (y, 0, h1);
|
|
draw_dot_c (vdata, x, y, w, 0x0000FF00);
|
|
|
|
x = (gint) (ox + (f2l_m + f2l_h) * dx);
|
|
y = (gint) (oy + (f2r_m + f2r_h) * dy);
|
|
x = CLAMP (x, 0, w1);
|
|
y = CLAMP (y, 0, h1);
|
|
draw_dot_c (vdata, x, y, w, 0x000000FF);
|
|
}
|
|
|
|
scope->f1l_l = f1l_l;
|
|
scope->f1l_m = f1l_m;
|
|
scope->f1l_h = f1l_h;
|
|
scope->f1r_l = f1r_l;
|
|
scope->f1r_m = f1r_m;
|
|
scope->f1r_h = f1r_h;
|
|
scope->f2l_l = f2l_l;
|
|
scope->f2l_m = f2l_m;
|
|
scope->f2l_h = f2l_h;
|
|
scope->f2r_l = f2r_l;
|
|
scope->f2r_m = f2r_m;
|
|
scope->f2r_h = f2r_h;
|
|
}
|
|
|
|
static void
|
|
render_color_lines (GstAudioVisualizer * base, guint32 * vdata,
|
|
gint16 * adata, guint num_samples)
|
|
{
|
|
GstSpaceScope *scope = (GstSpaceScope *) base;
|
|
guint i, s;
|
|
gint x, y, ox, oy;
|
|
gfloat dx, dy;
|
|
gint w = GST_VIDEO_INFO_WIDTH (&base->vinfo), w1 = w - 2;
|
|
gint h = GST_VIDEO_INFO_HEIGHT (&base->vinfo), h1 = h - 2;
|
|
gdouble il, ir;
|
|
gdouble f1l_l = scope->f1l_l, f1l_m = scope->f1l_m, f1l_h = scope->f1l_h;
|
|
gdouble f1r_l = scope->f1r_l, f1r_m = scope->f1r_m, f1r_h = scope->f1r_h;
|
|
gdouble f2l_l = scope->f2l_l, f2l_m = scope->f2l_m, f2l_h = scope->f2l_h;
|
|
gdouble f2r_l = scope->f2r_l, f2r_m = scope->f2r_m, f2r_h = scope->f2r_h;
|
|
gint x2, y2, x3, y3, x4, y4;
|
|
|
|
/* draw lines 1st channel x, 2nd channel y */
|
|
ox = w / 2;
|
|
oy = h / 2;
|
|
dx = w / 65536.0;
|
|
dy = h / 65536.0;
|
|
s = 0;
|
|
|
|
/* do first pixels */
|
|
il = (gdouble) adata[s++];
|
|
ir = (gdouble) adata[s++];
|
|
|
|
filter (il, ir);
|
|
|
|
x = (gint) (ox + f1l_l * dx);
|
|
y = (gint) (oy + f1r_l * dy);
|
|
x2 = CLAMP (x, 0, w1);
|
|
y2 = CLAMP (y, 0, h1);
|
|
|
|
x = (gint) (ox + f2l_l * dx);
|
|
y = (gint) (oy + f2r_l * dy);
|
|
x3 = CLAMP (x, 0, w1);
|
|
y3 = CLAMP (y, 0, h1);
|
|
|
|
x = (gint) (ox + (f2l_m + f2l_h) * dx);
|
|
y = (gint) (oy + (f2r_m + f2r_h) * dy);
|
|
x4 = CLAMP (x, 0, w1);
|
|
y4 = CLAMP (y, 0, h1);
|
|
|
|
for (i = 1; i < num_samples; i++) {
|
|
il = (gdouble) adata[s++];
|
|
ir = (gdouble) adata[s++];
|
|
|
|
filter (il, ir);
|
|
|
|
x = (gint) (ox + f1l_l * dx);
|
|
y = (gint) (oy + f1r_l * dy);
|
|
x = CLAMP (x, 0, w1);
|
|
y = CLAMP (y, 0, h1);
|
|
draw_line_aa (vdata, x2, x, y2, y, w, 0x00FF0000);
|
|
x2 = x;
|
|
y2 = y;
|
|
|
|
x = (gint) (ox + f2l_l * dx);
|
|
y = (gint) (oy + f2r_l * dy);
|
|
x = CLAMP (x, 0, w1);
|
|
y = CLAMP (y, 0, h1);
|
|
draw_line_aa (vdata, x3, x, y3, y, w, 0x0000FF00);
|
|
x3 = x;
|
|
y3 = y;
|
|
|
|
x = (gint) (ox + (f2l_m + f2l_h) * dx);
|
|
y = (gint) (oy + (f2r_m + f2r_h) * dy);
|
|
x = CLAMP (x, 0, w1);
|
|
y = CLAMP (y, 0, h1);
|
|
draw_line_aa (vdata, x4, x, y4, y, w, 0x000000FF);
|
|
x4 = x;
|
|
y4 = y;
|
|
}
|
|
|
|
scope->f1l_l = f1l_l;
|
|
scope->f1l_m = f1l_m;
|
|
scope->f1l_h = f1l_h;
|
|
scope->f1r_l = f1r_l;
|
|
scope->f1r_m = f1r_m;
|
|
scope->f1r_h = f1r_h;
|
|
scope->f2l_l = f2l_l;
|
|
scope->f2l_m = f2l_m;
|
|
scope->f2l_h = f2l_h;
|
|
scope->f2r_l = f2r_l;
|
|
scope->f2r_m = f2r_m;
|
|
scope->f2r_h = f2r_h;
|
|
}
|
|
|
|
static gboolean
|
|
gst_space_scope_render (GstAudioVisualizer * base, GstBuffer * audio,
|
|
GstVideoFrame * video)
|
|
{
|
|
GstSpaceScope *scope = GST_SPACE_SCOPE (base);
|
|
GstMapInfo amap;
|
|
guint num_samples;
|
|
|
|
gst_buffer_map (audio, &amap, GST_MAP_READ);
|
|
|
|
num_samples =
|
|
amap.size / (GST_AUDIO_INFO_CHANNELS (&base->ainfo) * sizeof (gint16));
|
|
scope->process (base, (guint32 *) GST_VIDEO_FRAME_PLANE_DATA (video, 0),
|
|
(gint16 *) amap.data, num_samples);
|
|
gst_buffer_unmap (audio, &amap);
|
|
return TRUE;
|
|
}
|