mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-03 15:06:34 +00:00
f768ab94c7
Original commit message from CVS: 2004-01-12 Benjamin Otte <in7y118@public.uni-hamburg.de> * gst-libs/gst/video/video.h: Fix caps template names to be understandable. Prefix everything with GST_VIDEO. * ext/aalib/gstaasink.c: * ext/divx/gstdivxdec.c: * ext/divx/gstdivxenc.c: * ext/gdk_pixbuf/gstgdkpixbuf.c: * ext/hermes/gstcolorspace.c: (gst_colorspace_base_init): * ext/jpeg/gstjpegdec.c: (raw_caps_factory): * ext/jpeg/gstjpegenc.c: (raw_caps_factory): * ext/libcaca/gstcacasink.c: * ext/libpng/gstpngenc.c: (raw_caps_factory): * ext/snapshot/gstsnapshot.c: * ext/swfdec/gstswfdec.c: * ext/xvid/gstxviddec.c: * ext/xvid/gstxvidenc.c: * gst/chart/gstchart.c: * gst/deinterlace/gstdeinterlace.c: * gst/effectv/gsteffectv.c: * gst/flx/gstflxdec.c: (gst_flxdec_loop): * gst/goom/gstgoom.c: * gst/median/gstmedian.c: * gst/monoscope/gstmonoscope.c: (gst_monoscope_init), (gst_monoscope_srcconnect), (gst_monoscope_chain): * gst/overlay/gstoverlay.c: * gst/smooth/gstsmooth.c: * gst/smpte/gstsmpte.c: * gst/synaesthesia/gstsynaesthesia.c: * gst/videocrop/gstvideocrop.c: * gst/videodrop/gstvideodrop.c: * gst/y4m/gsty4mencode.c: * sys/qcam/gstqcamsrc.c: * sys/v4l/gstv4lsrc.c: (gst_v4lsrc_palette_to_caps): Make them work with new video.h file. * sys/ximage/ximagesink.c: (gst_ximagesink_chain), (gst_ximagesink_buffer_free), (gst_ximagesink_buffer_alloc): * sys/xvimage/xvimagesink.c: (gst_xvimagesink_chain), (gst_xvimagesink_buffer_free), (gst_xvimagesink_buffer_alloc): Make it work with new buffer allocation system.
405 lines
11 KiB
C
405 lines
11 KiB
C
/* gstchart.c: implementation of chart drawing element
|
|
* Copyright (C) <2001> Richard Boulton <richard@tartarus.org>
|
|
*
|
|
* 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 <gst/gst.h>
|
|
#include <gst/video/video.h>
|
|
|
|
#define GST_TYPE_CHART (gst_chart_get_type())
|
|
#define GST_CHART(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_CHART,GstChart))
|
|
#define GST_CHART_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_CHART,GstChart))
|
|
#define GST_IS_CHART(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_CHART))
|
|
#define GST_IS_CHART_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_CHART))
|
|
|
|
typedef struct _GstChart GstChart;
|
|
typedef struct _GstChartClass GstChartClass;
|
|
|
|
struct _GstChart {
|
|
GstElement element;
|
|
|
|
/* pads */
|
|
GstPad *sinkpad,*srcpad;
|
|
|
|
/* the timestamp of the next frame */
|
|
guint64 next_time;
|
|
|
|
/* video state */
|
|
gint bpp;
|
|
gint depth;
|
|
gint width;
|
|
gint height;
|
|
|
|
gint samplerate;
|
|
gdouble framerate; /* desired frame rate */
|
|
gint samples_between_frames; /* number of samples between start of successive frames */
|
|
gint samples_since_last_frame; /* number of samples between start of successive frames */
|
|
};
|
|
|
|
struct _GstChartClass {
|
|
GstElementClass parent_class;
|
|
};
|
|
|
|
GType gst_chart_get_type(void);
|
|
|
|
|
|
/* elementfactory information */
|
|
static GstElementDetails gst_chart_details = {
|
|
"chart drawer",
|
|
"Visualization",
|
|
"Takes frames of data and outputs video frames of a chart of data",
|
|
"Richard Boulton <richard@tartarus.org>",
|
|
};
|
|
|
|
/* signals and args */
|
|
enum {
|
|
/* FILL ME */
|
|
LAST_SIGNAL
|
|
};
|
|
|
|
enum {
|
|
ARG_0,
|
|
/* FILL ME */
|
|
};
|
|
|
|
static GstStaticPadTemplate src_factory =
|
|
GST_STATIC_PAD_TEMPLATE (
|
|
"src",
|
|
GST_PAD_SRC,
|
|
GST_PAD_ALWAYS,
|
|
GST_STATIC_CAPS ( GST_VIDEO_CAPS_RGB_16)
|
|
);
|
|
|
|
static GstStaticPadTemplate sink_factory =
|
|
GST_STATIC_PAD_TEMPLATE (
|
|
"sink",
|
|
GST_PAD_SINK,
|
|
GST_PAD_ALWAYS,
|
|
GST_STATIC_CAPS ("audio/x-raw-int, "
|
|
"endianness = (int) BYTE_ORDER, "
|
|
"signed = (boolean) TRUE, "
|
|
"width = (int) 16, "
|
|
"depth = (int) 16, "
|
|
"rate = (int) [ 8000, 96000 ], "
|
|
"channels = (int) 1")
|
|
);
|
|
|
|
static void gst_chart_base_init (gpointer g_class);
|
|
static void gst_chart_class_init (GstChartClass *klass);
|
|
static void gst_chart_init (GstChart *chart);
|
|
|
|
static void gst_chart_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec);
|
|
static void gst_chart_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec);
|
|
|
|
static void gst_chart_chain (GstPad *pad, GstData *_data);
|
|
|
|
static GstPadLinkReturn
|
|
gst_chart_sinkconnect (GstPad *pad, const GstCaps *caps);
|
|
static GstPadLinkReturn
|
|
gst_chart_srcconnect (GstPad *pad, const GstCaps *caps);
|
|
|
|
static GstElementClass *parent_class = NULL;
|
|
|
|
GType
|
|
gst_chart_get_type (void)
|
|
{
|
|
static GType type = 0;
|
|
|
|
if (!type) {
|
|
static const GTypeInfo info = {
|
|
sizeof(GstChartClass),
|
|
gst_chart_base_init,
|
|
NULL,
|
|
(GClassInitFunc)gst_chart_class_init,
|
|
NULL,
|
|
NULL,
|
|
sizeof(GstChart),
|
|
0,
|
|
(GInstanceInitFunc)gst_chart_init,
|
|
};
|
|
type = g_type_register_static(GST_TYPE_ELEMENT, "GstChart", &info, 0);
|
|
}
|
|
return type;
|
|
}
|
|
|
|
static void
|
|
gst_chart_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 (&src_factory));
|
|
gst_element_class_add_pad_template (element_class, gst_static_pad_template_get (&sink_factory));
|
|
gst_element_class_set_details (element_class, &gst_chart_details);
|
|
}
|
|
|
|
static void
|
|
gst_chart_class_init(GstChartClass *klass)
|
|
{
|
|
GObjectClass *gobject_class;
|
|
GstElementClass *gstelement_class;
|
|
|
|
gobject_class = (GObjectClass*)klass;
|
|
gstelement_class = (GstElementClass*)klass;
|
|
|
|
parent_class = g_type_class_ref(GST_TYPE_ELEMENT);
|
|
|
|
gobject_class->set_property = gst_chart_set_property;
|
|
gobject_class->get_property = gst_chart_get_property;
|
|
}
|
|
|
|
static void
|
|
gst_chart_init (GstChart *chart)
|
|
{
|
|
/* create the sink and src pads */
|
|
chart->sinkpad = gst_pad_new_from_template (
|
|
gst_static_pad_template_get (&sink_factory),
|
|
"sink");
|
|
chart->srcpad = gst_pad_new_from_template (
|
|
gst_static_pad_template_get (&src_factory),
|
|
"src");
|
|
gst_element_add_pad (GST_ELEMENT (chart), chart->sinkpad);
|
|
gst_element_add_pad (GST_ELEMENT (chart), chart->srcpad);
|
|
|
|
gst_pad_set_chain_function (chart->sinkpad, gst_chart_chain);
|
|
gst_pad_set_link_function (chart->sinkpad, gst_chart_sinkconnect);
|
|
gst_pad_set_link_function (chart->sinkpad, gst_chart_srcconnect);
|
|
|
|
chart->next_time = 0;
|
|
|
|
/* reset the initial video state */
|
|
chart->bpp = 16;
|
|
chart->depth = 16;
|
|
chart->width = 256;
|
|
chart->height = 128;
|
|
|
|
chart->samplerate = -1;
|
|
chart->framerate = 25; /* desired frame rate */
|
|
chart->samples_between_frames = 0; /* number of samples between start of successive frames */
|
|
chart->samples_since_last_frame = 0;
|
|
}
|
|
|
|
static GstPadLinkReturn
|
|
gst_chart_sinkconnect (GstPad *pad, const GstCaps *caps)
|
|
{
|
|
GstChart *chart;
|
|
GstStructure *structure;
|
|
|
|
chart = GST_CHART (gst_pad_get_parent (pad));
|
|
|
|
structure = gst_caps_get_structure (caps, 0);
|
|
|
|
gst_structure_get_int (structure, "rate", &chart->samplerate);
|
|
chart->samples_between_frames = chart->samplerate / chart->framerate;
|
|
|
|
GST_DEBUG ("CHART: new sink caps: rate %d",
|
|
chart->samplerate);
|
|
/*gst_chart_sync_parms (chart); */
|
|
/* */
|
|
return GST_PAD_LINK_OK;
|
|
}
|
|
|
|
static GstPadLinkReturn
|
|
gst_chart_srcconnect (GstPad *pad, const GstCaps*caps)
|
|
{
|
|
GstChart *chart;
|
|
GstStructure *structure;
|
|
|
|
chart = GST_CHART (gst_pad_get_parent (pad));
|
|
|
|
structure = gst_caps_get_structure (caps, 0);
|
|
|
|
if (gst_structure_get_double (structure, "framerate", &chart->framerate)) {
|
|
chart->samples_between_frames = chart->samplerate / chart->framerate;
|
|
}
|
|
|
|
gst_structure_get_int (structure, "width", &chart->width);
|
|
gst_structure_get_int (structure, "height", &chart->height);
|
|
|
|
GST_DEBUG ("CHART: new src caps: framerate %f, %dx%d",
|
|
chart->framerate, chart->width, chart->height);
|
|
|
|
return GST_PAD_LINK_OK;
|
|
}
|
|
|
|
static void
|
|
draw_chart_16bpp(guchar * output, gint width, gint height,
|
|
gint16 * src_data, gint src_size)
|
|
{
|
|
gint i;
|
|
guint16 *colstart;
|
|
gint16 * in;
|
|
|
|
GST_DEBUG ("CHART: drawing frame to %p, width = %d, height = %d, src_data = %p, src_size = %d",
|
|
output, width, height, src_data, src_size);
|
|
|
|
for (colstart = (guint16 *)output, in = (gint16 *)src_data, i = 0;
|
|
i < width;
|
|
colstart++, in++, i++) {
|
|
guint16 * pos = colstart;
|
|
gint h1;
|
|
|
|
h1 = (((gint)(*in)) * height / (1 << 16)) + height / 2;
|
|
if (h1 >= height) h1 = height;
|
|
|
|
if (h1 < height / 2) {
|
|
while (pos < colstart + h1 * width) {
|
|
*pos = 0x0000;
|
|
pos += width;
|
|
}
|
|
while (pos < colstart + height / 2 * width) {
|
|
*pos = 0x07e0;
|
|
pos += width;
|
|
}
|
|
while (pos < colstart + height * width) {
|
|
*pos = 0x0000;
|
|
pos += width;
|
|
}
|
|
} else {
|
|
while (pos < colstart + height / 2 * width) {
|
|
*pos = 0x0000;
|
|
pos += width;
|
|
}
|
|
while (pos < colstart + h1 * width) {
|
|
*pos = 0x07e0;
|
|
pos += width;
|
|
}
|
|
while (pos < colstart + height * width) {
|
|
*pos = 0x0000;
|
|
pos += width;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_chart_chain (GstPad *pad, GstData *_data)
|
|
{
|
|
GstBuffer *bufin = GST_BUFFER (_data);
|
|
GstChart *chart;
|
|
GstBuffer *bufout;
|
|
guint32 samples_in;
|
|
guint32 sizeout;
|
|
gint16 *datain;
|
|
guchar *dataout;
|
|
|
|
g_return_if_fail (bufin != NULL);
|
|
g_return_if_fail (pad != NULL);
|
|
g_return_if_fail (GST_IS_PAD(pad));
|
|
g_return_if_fail (GST_IS_CHART(GST_OBJECT_PARENT(pad)));
|
|
chart = GST_CHART(GST_OBJECT_PARENT (pad));
|
|
g_return_if_fail (chart != NULL);
|
|
|
|
GST_DEBUG ("CHART: chainfunc called");
|
|
|
|
samples_in = GST_BUFFER_SIZE (bufin) / sizeof(gint16);
|
|
datain = (gint16 *) (GST_BUFFER_DATA (bufin));
|
|
GST_DEBUG ("input buffer has %d samples", samples_in);
|
|
if (chart->next_time <= GST_BUFFER_TIMESTAMP (bufin)) {
|
|
chart->next_time = GST_BUFFER_TIMESTAMP (bufin);
|
|
GST_DEBUG ("in: %" G_GINT64_FORMAT, GST_BUFFER_TIMESTAMP (bufin));
|
|
}
|
|
|
|
chart->samples_since_last_frame += samples_in;
|
|
if (chart->samples_between_frames <= chart->samples_since_last_frame) {
|
|
chart->samples_since_last_frame = 0;
|
|
|
|
/* get data to draw into buffer */
|
|
if (samples_in >= chart->width) {
|
|
/* make a new buffer for the output */
|
|
bufout = gst_buffer_new ();
|
|
sizeout = chart->bpp / 8 * chart->width * chart->height;
|
|
dataout = g_malloc (sizeout);
|
|
GST_BUFFER_SIZE(bufout) = sizeout;
|
|
GST_BUFFER_DATA(bufout) = dataout;
|
|
GST_DEBUG ("CHART: made new buffer: size %d, width %d, height %d",
|
|
sizeout, chart->width, chart->height);
|
|
|
|
/* take data and draw to new buffer */
|
|
/* FIXME: call different routines for different properties */
|
|
draw_chart_16bpp(dataout, chart->width, chart->height, (gint16 *)datain, samples_in);
|
|
|
|
gst_buffer_unref(bufin);
|
|
|
|
/* set timestamp */
|
|
GST_BUFFER_TIMESTAMP (bufout) = chart->next_time;
|
|
|
|
GST_DEBUG ("CHART: outputting buffer");
|
|
/* output buffer */
|
|
GST_BUFFER_FLAG_SET (bufout, GST_BUFFER_READONLY);
|
|
gst_pad_push (chart->srcpad, GST_DATA (bufout));
|
|
}
|
|
} else {
|
|
GST_DEBUG ("CHART: skipping buffer");
|
|
gst_buffer_unref(bufin);
|
|
}
|
|
|
|
GST_DEBUG ("CHART: exiting chainfunc");
|
|
}
|
|
|
|
static void
|
|
gst_chart_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
|
|
{
|
|
GstChart *chart;
|
|
|
|
/* it's not null if we got it, but it might not be ours */
|
|
g_return_if_fail (GST_IS_CHART (object));
|
|
chart = GST_CHART (object);
|
|
|
|
switch (prop_id) {
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_chart_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
|
|
{
|
|
GstChart *chart;
|
|
|
|
/* it's not null if we got it, but it might not be ours */
|
|
g_return_if_fail (GST_IS_CHART (object));
|
|
chart = GST_CHART (object);
|
|
|
|
switch (prop_id) {
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
plugin_init (GstPlugin *plugin)
|
|
{
|
|
if (!gst_element_register (plugin, "chart", GST_RANK_NONE, GST_TYPE_CHART))
|
|
return FALSE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
GST_PLUGIN_DEFINE (
|
|
GST_VERSION_MAJOR,
|
|
GST_VERSION_MINOR,
|
|
"chart",
|
|
"Takes frames of data and outputs video frames of a chart of data",
|
|
plugin_init,
|
|
VERSION,
|
|
"LGPL",
|
|
GST_PACKAGE,
|
|
GST_ORIGIN)
|