mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-24 09:10:36 +00:00
move smoothwave to gst
Original commit message from CVS: move smoothwave to gst
This commit is contained in:
Thomas Vander Stichele
parent
3f88a353d4
commit
691b10ff8e
6 changed files with 0 additions and 601 deletions
1
ext/smoothwave/.gitignore
vendored
1
ext/smoothwave/.gitignore
vendored
|
|
@ -1 +0,0 @@
|
||||||
demo-osssrc
|
|
||||||
|
|
@ -1,18 +0,0 @@
|
||||||
|
|
||||||
plugin_LTLIBRARIES = libgstsmoothwave.la
|
|
||||||
|
|
||||||
libgstsmoothwave_la_SOURCES = gstsmoothwave.c
|
|
||||||
libgstsmoothwave_la_CFLAGS = $(GST_CFLAGS)
|
|
||||||
libgstsmoothwave_la_LIBADD =
|
|
||||||
libgstsmoothwave_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
|
|
||||||
|
|
||||||
noinst_HEADERS = gstsmoothwave.h
|
|
||||||
|
|
||||||
if HAVE_GTK
|
|
||||||
noinst_PROGRAMS = demo-osssrc
|
|
||||||
demo_osssrc_SOURCES = demo-osssrc.c
|
|
||||||
demo_osssrc_CFLAGS = $(GST_CFLAGS) $(GTK_CFLAGS)
|
|
||||||
demo_osssrc_LDFLAGS = $(GST_LIBS) $(GTK_LIBS)
|
|
||||||
endif
|
|
||||||
|
|
||||||
EXTRA_DIST = README
|
|
||||||
|
|
@ -1,6 +0,0 @@
|
||||||
This is a home-grown visualization, with a couple lines of code copied
|
|
||||||
from synaesthesia. It draws the waveform in the bitmap, then fades out
|
|
||||||
the entire bitmap so older waveforms disappear. It looks OK, but it's
|
|
||||||
grayscale so far (haven't solved the cmap problems, note all the commented
|
|
||||||
out code). I'm going to try to make a much better version as time goes
|
|
||||||
on.
|
|
||||||
|
|
@ -1,52 +0,0 @@
|
||||||
#ifdef HAVE_CONFIG_H
|
|
||||||
#include "config.h"
|
|
||||||
#endif
|
|
||||||
#include <gtk/gtk.h>
|
|
||||||
#include <gst/gst.h>
|
|
||||||
|
|
||||||
extern gboolean _gst_plugin_spew;
|
|
||||||
|
|
||||||
gboolean idle_func (gpointer data);
|
|
||||||
|
|
||||||
GtkWidget *drawingarea;
|
|
||||||
|
|
||||||
int
|
|
||||||
main (int argc, char *argv[])
|
|
||||||
{
|
|
||||||
GstElement *bin;
|
|
||||||
GstElement *src;
|
|
||||||
GstElement *wave;
|
|
||||||
GstElement *ximage;
|
|
||||||
|
|
||||||
gst_init (&argc, &argv);
|
|
||||||
gst_plugin_load ("libsmoothwave.so");
|
|
||||||
gtk_init (&argc, &argv);
|
|
||||||
|
|
||||||
bin = gst_pipeline_new ("bin");
|
|
||||||
|
|
||||||
src = gst_element_factory_make ("sinesrc", "src");
|
|
||||||
wave = gst_element_factory_make ("smoothwave", "wave");
|
|
||||||
ximage = gst_element_factory_make (DEFAULT_VIDEOSINK, "sink");
|
|
||||||
g_return_val_if_fail (src != NULL, -1);
|
|
||||||
g_return_val_if_fail (wave != NULL, -1);
|
|
||||||
g_return_val_if_fail (ximage != NULL, -1);
|
|
||||||
|
|
||||||
|
|
||||||
gst_bin_add_many (GST_BIN (bin), src, wave, ximage, NULL);
|
|
||||||
g_return_val_if_fail (gst_element_link_many (src, wave, ximage,
|
|
||||||
NULL) != FALSE, -1);
|
|
||||||
|
|
||||||
gst_element_set_state (GST_ELEMENT (bin), GST_STATE_PLAYING);
|
|
||||||
g_idle_add (idle_func, bin);
|
|
||||||
|
|
||||||
gtk_main ();
|
|
||||||
|
|
||||||
return 0;
|
|
||||||
}
|
|
||||||
|
|
||||||
gboolean
|
|
||||||
idle_func (gpointer data)
|
|
||||||
{
|
|
||||||
gst_bin_iterate (GST_BIN (data));
|
|
||||||
return TRUE;
|
|
||||||
}
|
|
||||||
|
|
@ -1,446 +0,0 @@
|
||||||
/* GStreamer
|
|
||||||
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
|
|
||||||
*
|
|
||||||
* This library is free software; you can redistribute it and/or
|
|
||||||
* modify it under the terms of the GNU Library General Public
|
|
||||||
* License as published by the Free Software Foundation; either
|
|
||||||
* version 2 of the License, or (at your option) any later version.
|
|
||||||
*
|
|
||||||
* This library is distributed in the hope that it will be useful,
|
|
||||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
||||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
||||||
* Library General Public License for more details.
|
|
||||||
*
|
|
||||||
* You should have received a copy of the GNU Library General Public
|
|
||||||
* License along with this library; if not, write to the
|
|
||||||
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
||||||
* Boston, MA 02111-1307, USA.
|
|
||||||
*/
|
|
||||||
|
|
||||||
|
|
||||||
#ifdef HAVE_CONFIG_H
|
|
||||||
#include "config.h"
|
|
||||||
#endif
|
|
||||||
#include <string.h>
|
|
||||||
|
|
||||||
#include <gst/gst.h>
|
|
||||||
#include <gst/video/video.h>
|
|
||||||
#include <gst/audio/audio.h>
|
|
||||||
|
|
||||||
#include "gstsmoothwave.h"
|
|
||||||
|
|
||||||
static GstElementDetails gst_smoothwave_details =
|
|
||||||
GST_ELEMENT_DETAILS ("Smooth waveform",
|
|
||||||
"Visualization",
|
|
||||||
"Fading grayscale waveform display",
|
|
||||||
"Erik Walthinsen <omega@cse.ogi.edu>");
|
|
||||||
|
|
||||||
|
|
||||||
/* SmoothWave signals and args */
|
|
||||||
enum
|
|
||||||
{
|
|
||||||
/* FILL ME */
|
|
||||||
LAST_SIGNAL
|
|
||||||
};
|
|
||||||
|
|
||||||
static void gst_smoothwave_base_init (gpointer g_class);
|
|
||||||
static void gst_smoothwave_class_init (GstSmoothWaveClass * klass);
|
|
||||||
static void gst_smoothwave_init (GstSmoothWave * smoothwave);
|
|
||||||
static void gst_smoothwave_dispose (GObject * object);
|
|
||||||
static GstStateChangeReturn gst_sw_change_state (GstElement * element,
|
|
||||||
GstStateChange transition);
|
|
||||||
static void gst_smoothwave_chain (GstPad * pad, GstData * _data);
|
|
||||||
static GstPadLinkReturn gst_sw_sinklink (GstPad * pad, const GstCaps * caps);
|
|
||||||
static GstPadLinkReturn gst_sw_srclink (GstPad * pad, const GstCaps * caps);
|
|
||||||
|
|
||||||
static GstElementClass *parent_class = NULL;
|
|
||||||
|
|
||||||
/*static guint gst_smoothwave_signals[LAST_SIGNAL] = { 0 }; */
|
|
||||||
|
|
||||||
#if G_BYTE_ORDER == G_BIG_ENDIAN
|
|
||||||
static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
|
|
||||||
GST_PAD_SRC,
|
|
||||||
GST_PAD_ALWAYS,
|
|
||||||
GST_STATIC_CAPS ("video/x-raw-rgb, "
|
|
||||||
"bpp = (int) 32, "
|
|
||||||
"depth = (int) 24, "
|
|
||||||
"endianness = (int) BIG_ENDIAN, "
|
|
||||||
"red_mask = (int) " GST_VIDEO_BYTE2_MASK_32 ", "
|
|
||||||
"green_mask = (int) " GST_VIDEO_BYTE3_MASK_32 ", "
|
|
||||||
"blue_mask = (int) " GST_VIDEO_BYTE4_MASK_32 ", "
|
|
||||||
"width = (int)512, "
|
|
||||||
"height = (int)256, " "framerate = " GST_VIDEO_FPS_RANGE)
|
|
||||||
);
|
|
||||||
#else
|
|
||||||
static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
|
|
||||||
GST_PAD_SRC,
|
|
||||||
GST_PAD_ALWAYS,
|
|
||||||
GST_STATIC_CAPS ("video/x-raw-rgb, "
|
|
||||||
"bpp = (int) 32, "
|
|
||||||
"depth = (int) 24, "
|
|
||||||
"endianness = (int) BIG_ENDIAN, "
|
|
||||||
"red_mask = (int) " GST_VIDEO_BYTE3_MASK_32 ", "
|
|
||||||
"green_mask = (int) " GST_VIDEO_BYTE2_MASK_32 ", "
|
|
||||||
"blue_mask = (int) " GST_VIDEO_BYTE1_MASK_32 ", "
|
|
||||||
"width = (int)512, "
|
|
||||||
"height = (int)256, " "framerate = " GST_VIDEO_FPS_RANGE)
|
|
||||||
);
|
|
||||||
#endif
|
|
||||||
|
|
||||||
static GstStaticPadTemplate sink_template = 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, 2 ], "
|
|
||||||
"endianness = (int) BYTE_ORDER, "
|
|
||||||
"width = (int) 16, " "depth = (int) 16, " "signed = (boolean) true")
|
|
||||||
);
|
|
||||||
|
|
||||||
GType
|
|
||||||
gst_smoothwave_get_type (void)
|
|
||||||
{
|
|
||||||
static GType smoothwave_type = 0;
|
|
||||||
|
|
||||||
if (!smoothwave_type) {
|
|
||||||
static const GTypeInfo smoothwave_info = {
|
|
||||||
sizeof (GstSmoothWaveClass),
|
|
||||||
gst_smoothwave_base_init,
|
|
||||||
NULL,
|
|
||||||
(GClassInitFunc) gst_smoothwave_class_init,
|
|
||||||
NULL,
|
|
||||||
NULL,
|
|
||||||
sizeof (GstSmoothWave),
|
|
||||||
0,
|
|
||||||
(GInstanceInitFunc) gst_smoothwave_init,
|
|
||||||
};
|
|
||||||
|
|
||||||
smoothwave_type =
|
|
||||||
g_type_register_static (GST_TYPE_ELEMENT, "GstSmoothWave",
|
|
||||||
&smoothwave_info, 0);
|
|
||||||
}
|
|
||||||
return smoothwave_type;
|
|
||||||
}
|
|
||||||
|
|
||||||
static void
|
|
||||||
gst_smoothwave_base_init (gpointer g_class)
|
|
||||||
{
|
|
||||||
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
|
|
||||||
|
|
||||||
gst_element_class_set_details (element_class, &gst_smoothwave_details);
|
|
||||||
}
|
|
||||||
|
|
||||||
static void
|
|
||||||
gst_smoothwave_class_init (GstSmoothWaveClass * klass)
|
|
||||||
{
|
|
||||||
GObjectClass *gobject_class;
|
|
||||||
GstElementClass *element_class;
|
|
||||||
|
|
||||||
gobject_class = (GObjectClass *) klass;
|
|
||||||
element_class = (GstElementClass *) klass;
|
|
||||||
|
|
||||||
parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
|
|
||||||
gobject_class->dispose = gst_smoothwave_dispose;
|
|
||||||
element_class->change_state = gst_sw_change_state;
|
|
||||||
|
|
||||||
gst_element_class_add_pad_template (element_class,
|
|
||||||
gst_static_pad_template_get (&src_template));
|
|
||||||
gst_element_class_add_pad_template (element_class,
|
|
||||||
gst_static_pad_template_get (&sink_template));
|
|
||||||
}
|
|
||||||
|
|
||||||
static void
|
|
||||||
gst_smoothwave_init (GstSmoothWave * smoothwave)
|
|
||||||
{
|
|
||||||
int i;
|
|
||||||
|
|
||||||
smoothwave->sinkpad =
|
|
||||||
gst_pad_new_from_template (gst_static_pad_template_get (&sink_template),
|
|
||||||
"sink");
|
|
||||||
smoothwave->srcpad =
|
|
||||||
gst_pad_new_from_template (gst_static_pad_template_get (&src_template),
|
|
||||||
"src");
|
|
||||||
gst_element_add_pad (GST_ELEMENT (smoothwave), smoothwave->sinkpad);
|
|
||||||
gst_pad_set_chain_function (smoothwave->sinkpad, gst_smoothwave_chain);
|
|
||||||
gst_pad_set_link_function (smoothwave->sinkpad, gst_sw_sinklink);
|
|
||||||
|
|
||||||
gst_element_add_pad (GST_ELEMENT (smoothwave), smoothwave->srcpad);
|
|
||||||
gst_pad_set_link_function (smoothwave->srcpad, gst_sw_srclink);
|
|
||||||
|
|
||||||
GST_OBJECT_FLAG_SET (smoothwave, GST_ELEMENT_EVENT_AWARE);
|
|
||||||
|
|
||||||
smoothwave->adapter = gst_adapter_new ();
|
|
||||||
|
|
||||||
smoothwave->width = 512;
|
|
||||||
smoothwave->height = 256;
|
|
||||||
|
|
||||||
#define SPLIT_PT 96
|
|
||||||
|
|
||||||
/* Fade in blue up to the split point */
|
|
||||||
for (i = 0; i < SPLIT_PT; i++)
|
|
||||||
smoothwave->palette[i] = (255 * i / SPLIT_PT);
|
|
||||||
|
|
||||||
/* After the split point, fade out blue and fade in red */
|
|
||||||
for (; i < 256; i++) {
|
|
||||||
gint val = (i - SPLIT_PT) * 255 / (255 - SPLIT_PT);
|
|
||||||
|
|
||||||
smoothwave->palette[i] = (255 - val) | (val << 16);
|
|
||||||
}
|
|
||||||
|
|
||||||
smoothwave->imagebuffer = g_malloc (smoothwave->width * smoothwave->height);
|
|
||||||
memset (smoothwave->imagebuffer, 0, smoothwave->width * smoothwave->height);
|
|
||||||
|
|
||||||
smoothwave->fps = 0;
|
|
||||||
smoothwave->sample_rate = 0;
|
|
||||||
smoothwave->audio_basetime = GST_CLOCK_TIME_NONE;
|
|
||||||
smoothwave->samples_consumed = 0;
|
|
||||||
}
|
|
||||||
|
|
||||||
inline guchar *
|
|
||||||
draw_line (guchar * cur_pos, gint diff_y, gint stride)
|
|
||||||
{
|
|
||||||
gint j;
|
|
||||||
|
|
||||||
if (diff_y > 0) {
|
|
||||||
for (j = diff_y; j > 0; j--) {
|
|
||||||
cur_pos += stride;
|
|
||||||
*cur_pos = 0xff;
|
|
||||||
}
|
|
||||||
} else if (diff_y < 0) {
|
|
||||||
for (j = diff_y; j < 0; j++) {
|
|
||||||
cur_pos -= stride;
|
|
||||||
*cur_pos = 0xff;
|
|
||||||
}
|
|
||||||
} else {
|
|
||||||
*cur_pos = 0xff;
|
|
||||||
}
|
|
||||||
return cur_pos;
|
|
||||||
}
|
|
||||||
|
|
||||||
static void
|
|
||||||
gst_smoothwave_dispose (GObject * object)
|
|
||||||
{
|
|
||||||
GstSmoothWave *sw = GST_SMOOTHWAVE (object);
|
|
||||||
|
|
||||||
if (sw->adapter != NULL) {
|
|
||||||
g_object_unref (sw->adapter);
|
|
||||||
sw->adapter = NULL;
|
|
||||||
}
|
|
||||||
G_OBJECT_CLASS (parent_class)->dispose (object);
|
|
||||||
}
|
|
||||||
|
|
||||||
static GstPadLinkReturn
|
|
||||||
gst_sw_sinklink (GstPad * pad, const GstCaps * caps)
|
|
||||||
{
|
|
||||||
GstSmoothWave *sw = GST_SMOOTHWAVE (GST_OBJECT_PARENT (pad));
|
|
||||||
GstStructure *structure;
|
|
||||||
|
|
||||||
g_return_val_if_fail (sw != NULL, GST_PAD_LINK_REFUSED);
|
|
||||||
|
|
||||||
structure = gst_caps_get_structure (caps, 0);
|
|
||||||
if (!gst_structure_get_int (structure, "channels", &sw->channels) ||
|
|
||||||
!gst_structure_get_int (structure, "rate", &sw->sample_rate))
|
|
||||||
return GST_PAD_LINK_REFUSED;
|
|
||||||
|
|
||||||
return GST_PAD_LINK_OK;
|
|
||||||
}
|
|
||||||
|
|
||||||
static GstPadLinkReturn
|
|
||||||
gst_sw_srclink (GstPad * pad, const GstCaps * caps)
|
|
||||||
{
|
|
||||||
GstSmoothWave *sw = GST_SMOOTHWAVE (GST_OBJECT_PARENT (pad));
|
|
||||||
GstStructure *structure;
|
|
||||||
|
|
||||||
g_return_val_if_fail (sw != NULL, GST_PAD_LINK_REFUSED);
|
|
||||||
|
|
||||||
structure = gst_caps_get_structure (caps, 0);
|
|
||||||
if (!gst_structure_get_int (structure, "width", &sw->width) ||
|
|
||||||
!gst_structure_get_int (structure, "height", &sw->height) ||
|
|
||||||
!gst_structure_get_double (structure, "framerate", &sw->fps))
|
|
||||||
return GST_PAD_LINK_REFUSED;
|
|
||||||
|
|
||||||
return GST_PAD_LINK_OK;
|
|
||||||
}
|
|
||||||
|
|
||||||
static void
|
|
||||||
gst_smoothwave_chain (GstPad * pad, GstData * _data)
|
|
||||||
{
|
|
||||||
GstBuffer *buf = GST_BUFFER (_data);
|
|
||||||
GstSmoothWave *smoothwave;
|
|
||||||
guint32 bytesperread;
|
|
||||||
gint samples_per_frame;
|
|
||||||
|
|
||||||
g_return_if_fail (pad != NULL);
|
|
||||||
g_return_if_fail (GST_IS_PAD (pad));
|
|
||||||
g_return_if_fail (buf != NULL);
|
|
||||||
|
|
||||||
smoothwave = GST_SMOOTHWAVE (GST_OBJECT_PARENT (pad));
|
|
||||||
|
|
||||||
if (GST_IS_EVENT (_data)) {
|
|
||||||
GstEvent *event = GST_EVENT (_data);
|
|
||||||
|
|
||||||
switch (GST_EVENT_TYPE (event)) {
|
|
||||||
case GST_EVENT_DISCONTINUOUS:
|
|
||||||
{
|
|
||||||
gint64 value = 0;
|
|
||||||
|
|
||||||
gst_event_discont_get_value (event, GST_FORMAT_TIME, &value);
|
|
||||||
gst_adapter_clear (smoothwave->adapter);
|
|
||||||
smoothwave->audio_basetime = value;
|
|
||||||
smoothwave->samples_consumed = 0;
|
|
||||||
}
|
|
||||||
default:
|
|
||||||
gst_pad_event_default (pad, event);
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
return;
|
|
||||||
}
|
|
||||||
|
|
||||||
if (!GST_PAD_IS_USABLE (smoothwave->srcpad)) {
|
|
||||||
gst_buffer_unref (buf);
|
|
||||||
return;
|
|
||||||
}
|
|
||||||
if (smoothwave->audio_basetime == GST_CLOCK_TIME_NONE)
|
|
||||||
smoothwave->audio_basetime = GST_BUFFER_TIMESTAMP (buf);
|
|
||||||
if (smoothwave->audio_basetime == GST_CLOCK_TIME_NONE)
|
|
||||||
smoothwave->audio_basetime = 0;
|
|
||||||
|
|
||||||
bytesperread = smoothwave->width * smoothwave->channels * sizeof (gint16);
|
|
||||||
samples_per_frame = smoothwave->sample_rate / smoothwave->fps;
|
|
||||||
|
|
||||||
gst_adapter_push (smoothwave->adapter, buf);
|
|
||||||
while (gst_adapter_available (smoothwave->adapter) > MAX (bytesperread,
|
|
||||||
samples_per_frame * smoothwave->channels * sizeof (gint16))) {
|
|
||||||
guint32 *ptr;
|
|
||||||
gint i;
|
|
||||||
gint qheight;
|
|
||||||
const gint16 *samples =
|
|
||||||
(const guint16 *) gst_adapter_peek (smoothwave->adapter, bytesperread);
|
|
||||||
gint stride = smoothwave->width;
|
|
||||||
|
|
||||||
/* First draw the new waveform */
|
|
||||||
if (smoothwave->channels == 2) {
|
|
||||||
guchar *cur_pos[2];
|
|
||||||
gint prev_y[2];
|
|
||||||
|
|
||||||
qheight = smoothwave->height / 4;
|
|
||||||
prev_y[0] = (gint32) (*samples) * qheight / 32768;
|
|
||||||
samples++;
|
|
||||||
prev_y[1] = (gint32) (*samples) * qheight / 32768;
|
|
||||||
samples++;
|
|
||||||
cur_pos[0] = smoothwave->imagebuffer + ((prev_y[0] + qheight) * stride);
|
|
||||||
cur_pos[1] =
|
|
||||||
smoothwave->imagebuffer + ((prev_y[1] +
|
|
||||||
(3 * smoothwave->height / 4)) * stride);
|
|
||||||
*(cur_pos[0]) = 0xff;
|
|
||||||
*(cur_pos[1]) = 0xff;
|
|
||||||
|
|
||||||
for (i = 1; i < smoothwave->width; i++) {
|
|
||||||
gint diff_y = (gint) (*samples) * qheight / 32768 - prev_y[0];
|
|
||||||
|
|
||||||
samples++;
|
|
||||||
cur_pos[0] = draw_line (cur_pos[0], diff_y, stride);
|
|
||||||
cur_pos[0]++;
|
|
||||||
prev_y[0] += diff_y;
|
|
||||||
|
|
||||||
diff_y = (gint) (*samples) * qheight / 32768 - prev_y[1];
|
|
||||||
samples++;
|
|
||||||
cur_pos[1] = draw_line (cur_pos[1], diff_y, stride);
|
|
||||||
cur_pos[1]++;
|
|
||||||
prev_y[1] += diff_y;
|
|
||||||
}
|
|
||||||
} else {
|
|
||||||
qheight = smoothwave->height / 2;
|
|
||||||
guchar *cur_pos;
|
|
||||||
gint prev_y;
|
|
||||||
|
|
||||||
prev_y = (gint32) (*samples) * qheight / 32768;
|
|
||||||
samples++;
|
|
||||||
cur_pos = smoothwave->imagebuffer + ((prev_y + qheight) * stride);
|
|
||||||
*cur_pos = 0xff;
|
|
||||||
for (i = 1; i < smoothwave->width; i++) {
|
|
||||||
gint diff_y = (gint) (*samples) * qheight / 32768 - prev_y;
|
|
||||||
|
|
||||||
samples++;
|
|
||||||
cur_pos = draw_line (cur_pos, diff_y, stride);
|
|
||||||
cur_pos++;
|
|
||||||
prev_y += diff_y;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
/* Now fade stuff out */
|
|
||||||
ptr = (guint32 *) smoothwave->imagebuffer;
|
|
||||||
for (i = 0; i < (smoothwave->width * smoothwave->height) / 4; i++) {
|
|
||||||
if (*ptr)
|
|
||||||
*ptr -= ((*ptr & 0xf0f0f0f0ul) >> 4) + ((*ptr & 0xe0e0e0e0ul) >> 5);
|
|
||||||
ptr++;
|
|
||||||
}
|
|
||||||
|
|
||||||
{
|
|
||||||
guint32 *out;
|
|
||||||
guchar *in;
|
|
||||||
GstBuffer *bufout;
|
|
||||||
|
|
||||||
bufout =
|
|
||||||
gst_buffer_new_and_alloc (smoothwave->width * smoothwave->height * 4);
|
|
||||||
|
|
||||||
GST_BUFFER_TIMESTAMP (bufout) =
|
|
||||||
smoothwave->audio_basetime +
|
|
||||||
(GST_SECOND * smoothwave->samples_consumed / smoothwave->sample_rate);
|
|
||||||
GST_BUFFER_DURATION (bufout) = GST_SECOND / smoothwave->fps;
|
|
||||||
out = (guint32 *) GST_BUFFER_DATA (bufout);
|
|
||||||
in = smoothwave->imagebuffer;
|
|
||||||
|
|
||||||
for (i = 0; i < (smoothwave->width * smoothwave->height); i++) {
|
|
||||||
*out++ = smoothwave->palette[*in++]; // t | (t << 8) | (t << 16) | (t << 24);
|
|
||||||
}
|
|
||||||
gst_pad_push (smoothwave->srcpad, GST_DATA (bufout));
|
|
||||||
}
|
|
||||||
smoothwave->samples_consumed += samples_per_frame;
|
|
||||||
gst_adapter_flush (smoothwave->adapter,
|
|
||||||
samples_per_frame * smoothwave->channels * sizeof (gint16));
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
static GstStateChangeReturn
|
|
||||||
gst_sw_change_state (GstElement * element, GstStateChange transition)
|
|
||||||
{
|
|
||||||
GstSmoothWave *sw = GST_SMOOTHWAVE (element);
|
|
||||||
|
|
||||||
switch (transition) {
|
|
||||||
case GST_STATE_CHANGE_NULL_TO_READY:
|
|
||||||
break;
|
|
||||||
case GST_STATE_CHANGE_READY_TO_NULL:
|
|
||||||
break;
|
|
||||||
case GST_STATE_CHANGE_READY_TO_PAUSED:
|
|
||||||
sw->audio_basetime = GST_CLOCK_TIME_NONE;
|
|
||||||
gst_adapter_clear (sw->adapter);
|
|
||||||
break;
|
|
||||||
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
|
||||||
sw->channels = 0;
|
|
||||||
break;
|
|
||||||
default:
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
|
|
||||||
return GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
|
|
||||||
}
|
|
||||||
|
|
||||||
static gboolean
|
|
||||||
plugin_init (GstPlugin * plugin)
|
|
||||||
{
|
|
||||||
if (!gst_library_load ("gstbytestream"))
|
|
||||||
return FALSE;
|
|
||||||
|
|
||||||
if (!gst_element_register (plugin, "smoothwave", GST_RANK_NONE,
|
|
||||||
GST_TYPE_SMOOTHWAVE))
|
|
||||||
return FALSE;
|
|
||||||
|
|
||||||
return TRUE;
|
|
||||||
}
|
|
||||||
|
|
||||||
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
|
|
||||||
GST_VERSION_MINOR,
|
|
||||||
"smoothwave",
|
|
||||||
"Fading greyscale waveform display",
|
|
||||||
plugin_init, VERSION, "LGPL", GST_PACKAGE, GST_ORIGIN)
|
|
||||||
|
|
@ -1,78 +0,0 @@
|
||||||
/* GStreamer
|
|
||||||
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
|
|
||||||
*
|
|
||||||
* This library is free software; you can redistribute it and/or
|
|
||||||
* modify it under the terms of the GNU Library General Public
|
|
||||||
* License as published by the Free Software Foundation; either
|
|
||||||
* version 2 of the License, or (at your option) any later version.
|
|
||||||
*
|
|
||||||
* This library is distributed in the hope that it will be useful,
|
|
||||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
||||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
||||||
* Library General Public License for more details.
|
|
||||||
*
|
|
||||||
* You should have received a copy of the GNU Library General Public
|
|
||||||
* License along with this library; if not, write to the
|
|
||||||
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
||||||
* Boston, MA 02111-1307, USA.
|
|
||||||
*/
|
|
||||||
|
|
||||||
|
|
||||||
#ifndef __GST_SMOOTHWAVE_H__
|
|
||||||
#define __GST_SMOOTHWAVE_H__
|
|
||||||
|
|
||||||
|
|
||||||
#include <gst/gst.h>
|
|
||||||
#include <gst/bytestream/adapter.h>
|
|
||||||
|
|
||||||
#ifdef __cplusplus
|
|
||||||
extern "C"
|
|
||||||
{
|
|
||||||
#endif /* __cplusplus */
|
|
||||||
|
|
||||||
#define GST_TYPE_SMOOTHWAVE \
|
|
||||||
(gst_smoothwave_get_type())
|
|
||||||
#define GST_SMOOTHWAVE(obj) \
|
|
||||||
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_SMOOTHWAVE,GstSmoothWave))
|
|
||||||
#define GST_SMOOTHWAVE_CLASS(klass) \
|
|
||||||
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_SMOOTHWAVE,GstSmoothWave))
|
|
||||||
#define GST_IS_SMOOTHWAVE(obj) \
|
|
||||||
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_SMOOTHWAVE))
|
|
||||||
#define GST_IS_SMOOTHWAVE_CLASS(obj) \
|
|
||||||
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_SMOOTHWAVE))
|
|
||||||
|
|
||||||
typedef struct _GstSmoothWave GstSmoothWave;
|
|
||||||
typedef struct _GstSmoothWaveClass GstSmoothWaveClass;
|
|
||||||
|
|
||||||
struct _GstSmoothWave
|
|
||||||
{
|
|
||||||
GstElement element;
|
|
||||||
|
|
||||||
GstPad *sinkpad, *srcpad;
|
|
||||||
GstAdapter *adapter;
|
|
||||||
|
|
||||||
guchar *imagebuffer;
|
|
||||||
GstClockTime audio_basetime;
|
|
||||||
guint64 samples_consumed;
|
|
||||||
|
|
||||||
gint sample_rate;
|
|
||||||
gint width, height;
|
|
||||||
gdouble fps;
|
|
||||||
gint channels;
|
|
||||||
guint32 palette[256];
|
|
||||||
};
|
|
||||||
|
|
||||||
struct _GstSmoothWaveClass
|
|
||||||
{
|
|
||||||
GstElementClass parent_class;
|
|
||||||
};
|
|
||||||
|
|
||||||
GType gst_smoothwave_get_type (void);
|
|
||||||
|
|
||||||
|
|
||||||
#ifdef __cplusplus
|
|
||||||
}
|
|
||||||
#endif /* __cplusplus */
|
|
||||||
|
|
||||||
|
|
||||||
#endif /* __GST_SMOOTHWAVE_H__ */
|
|
||||||
Loading…
Reference in a new issue