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gstreamer/ext/aalib/gstaasink.c
Wim Taymans 97454065ce Bring the plugins in sync with the new core capsnego system. 
Original commit message from CVS:
Bring the plugins in sync with the new core capsnego system.
Added some features, enhancements...
2002-01-13 22:27:25 +00:00

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/* Gnome-Streamer
* 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.
*/
#include <config.h>
#include <string.h>
#include <sys/time.h>
#include "gstaasink.h"
static GstElementDetails gst_aasink_details = {
"Video sink",
"Sink/Video",
"An ASCII art videosink",
VERSION,
"Wim Taymans <wim.taymans@chello.be>",
"(C) 2001",
};
/* aasink signals and args */
enum {
SIGNAL_FRAME_DISPLAYED,
SIGNAL_HAVE_SIZE,
LAST_SIGNAL
};
enum {
ARG_0,
ARG_WIDTH,
ARG_HEIGHT,
ARG_DRIVER,
ARG_DITHER,
ARG_BRIGHTNESS,
ARG_CONTRAST,
ARG_GAMMA,
ARG_INVERSION,
ARG_RANDOMVAL,
ARG_FRAMES_DISPLAYED,
ARG_FRAME_TIME,
};
GST_PADTEMPLATE_FACTORY (sink_template,
"sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_CAPS_NEW (
"aasink_caps",
"video/raw",
"format", GST_PROPS_FOURCC (GST_STR_FOURCC ("I420"))
)
)
static void gst_aasink_class_init (GstAASinkClass *klass);
static void gst_aasink_init (GstAASink *aasink);
static void gst_aasink_chain (GstPad *pad, GstBuffer *buf);
static void gst_aasink_set_property (GObject *object, guint prop_id,
const GValue *value, GParamSpec *pspec);
static void gst_aasink_get_property (GObject *object, guint prop_id,
GValue *value, GParamSpec *pspec);
static GstElementStateReturn gst_aasink_change_state (GstElement *element);
static GstElementClass *parent_class = NULL;
static guint gst_aasink_signals[LAST_SIGNAL] = { 0 };
GType
gst_aasink_get_type (void)
{
static GType aasink_type = 0;
if (!aasink_type) {
static const GTypeInfo aasink_info = {
sizeof(GstAASinkClass),
NULL,
NULL,
(GClassInitFunc) gst_aasink_class_init,
NULL,
NULL,
sizeof(GstAASink),
0,
(GInstanceInitFunc)gst_aasink_init,
};
aasink_type = g_type_register_static(GST_TYPE_ELEMENT, "GstAASink", &aasink_info, 0);
}
return aasink_type;
}
#define GST_TYPE_AADRIVERS (gst_aasink_drivers_get_type())
static GType
gst_aasink_drivers_get_type (void)
{
static GType driver_type = 0;
if (!driver_type) {
GEnumValue *drivers;
const struct aa_driver *driver;
gint i = 0;
driver = aa_drivers[i++];
while (driver) {
driver = aa_drivers[i++];
}
drivers = g_new0(GEnumValue, i);
i = 0;
driver = aa_drivers[i];
while (driver) {
drivers[i].value = i;
drivers[i].value_name = g_strdup (driver->shortname);
drivers[i].value_nick = g_strdup (driver->name);
i++;
driver = aa_drivers[i];
}
drivers[i].value = 0;
drivers[i].value_name = NULL;
drivers[i].value_nick = NULL;
driver_type = g_enum_register_static ("GstAASinkDrivers", drivers);
}
return driver_type;
}
#define GST_TYPE_AADITHER (gst_aasink_dither_get_type())
static GType
gst_aasink_dither_get_type (void)
{
static GType dither_type = 0;
if (!dither_type) {
GEnumValue *ditherers;
gint i = 0;
while (aa_dithernames[i]) {
i++;
}
ditherers = g_new0(GEnumValue, i);
i = 0;
while (aa_dithernames[i]) {
ditherers[i].value = i;
ditherers[i].value_name = g_strdup (aa_dithernames[i]);
ditherers[i].value_nick = g_strdup (aa_dithernames[i]);
i++;
}
ditherers[i].value = 0;
ditherers[i].value_name = NULL;
ditherers[i].value_nick = NULL;
dither_type = g_enum_register_static ("GstAASinkDitherers", ditherers);
}
return dither_type;
}
static void
gst_aasink_class_init (GstAASinkClass *klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass*)klass;
gstelement_class = (GstElementClass*)klass;
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_READWRITE)); /* CHECKME */
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_HEIGHT,
g_param_spec_int("height","height","height",
G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); /* CHECKME */
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_DRIVER,
g_param_spec_enum("driver","driver","driver",
GST_TYPE_AADRIVERS,0,G_PARAM_READWRITE)); /* CHECKME! */
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_DITHER,
g_param_spec_enum("dither","dither","dither",
GST_TYPE_AADITHER,0,G_PARAM_READWRITE)); /* CHECKME! */
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_BRIGHTNESS,
g_param_spec_int("brightness","brightness","brightness",
G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); /* CHECKME */
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_CONTRAST,
g_param_spec_int("contrast","contrast","contrast",
G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); /* CHECKME */
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_GAMMA,
g_param_spec_float("gamma","gamma","gamma",
0.0,5.0,1.0,G_PARAM_READWRITE)); /* CHECKME */
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_INVERSION,
g_param_spec_boolean("inversion","inversion","inversion",
TRUE,G_PARAM_READWRITE)); /* CHECKME */
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_RANDOMVAL,
g_param_spec_int("randomval","randomval","randomval",
G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); /* CHECKME */
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_FRAMES_DISPLAYED,
g_param_spec_int("frames_displayed","frames_displayed","frames_displayed",
G_MININT,G_MAXINT,0,G_PARAM_READABLE)); /* CHECKME */
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_FRAME_TIME,
g_param_spec_int("frame_time","frame_time","frame_time",
G_MININT,G_MAXINT,0,G_PARAM_READABLE)); /* CHECKME */
gobject_class->set_property = gst_aasink_set_property;
gobject_class->get_property = gst_aasink_get_property;
gst_aasink_signals[SIGNAL_FRAME_DISPLAYED] =
g_signal_new ("frame_displayed", G_TYPE_FROM_CLASS(klass), G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GstAASinkClass, frame_displayed), NULL, NULL,
g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
gst_aasink_signals[SIGNAL_HAVE_SIZE] =
g_signal_new ("have_size", G_TYPE_FROM_CLASS(klass), G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GstAASinkClass, have_size), NULL, NULL,
gst_marshal_VOID__INT_INT, G_TYPE_NONE, 2,
G_TYPE_UINT, G_TYPE_UINT);
gstelement_class->change_state = gst_aasink_change_state;
}
static GstPadConnectReturn
gst_aasink_sinkconnect (GstPad *pad, GstCaps *caps)
{
GstAASink *aasink;
gulong print_format;
aasink = GST_AASINK (gst_pad_get_parent (pad));
if (!GST_CAPS_IS_FIXED (caps))
return GST_PAD_CONNECT_DELAYED;
aasink->width = gst_caps_get_int (caps, "width");
aasink->height = gst_caps_get_int (caps, "height");
print_format = GULONG_FROM_LE (aasink->format);
GST_DEBUG (0, "aasink: setting %08lx (%4.4s)\n", aasink->format, (gchar*)&print_format);
g_signal_emit( G_OBJECT (aasink), gst_aasink_signals[SIGNAL_HAVE_SIZE], 0,
aasink->width, aasink->height);
return GST_PAD_CONNECT_OK;
}
static void
gst_aasink_init (GstAASink *aasink)
{
aasink->sinkpad = gst_pad_new_from_template (
GST_PADTEMPLATE_GET (sink_template), "sink");
gst_element_add_pad (GST_ELEMENT (aasink), aasink->sinkpad);
gst_pad_set_chain_function (aasink->sinkpad, gst_aasink_chain);
gst_pad_set_connect_function (aasink->sinkpad, gst_aasink_sinkconnect);
aasink->clock = gst_clock_get_system();
gst_clock_register(aasink->clock, GST_OBJECT(aasink));
memcpy(&aasink->ascii_surf, &aa_defparams, sizeof (struct aa_hardware_params));
aasink->ascii_parms.bright = 0;
aasink->ascii_parms.contrast = 16;
aasink->ascii_parms.gamma = 1.0;
aasink->ascii_parms.dither = 0;
aasink->ascii_parms.inversion = 0;
aasink->ascii_parms.randomval = 0;
aasink->aa_driver = 0;
aasink->width = -1;
aasink->height = -1;
GST_FLAG_SET(aasink, GST_ELEMENT_THREAD_SUGGESTED);
}
static void
gst_aasink_scale (GstAASink *aasink, gchar *src, gchar *dest,
gint sw, gint sh,
gint dw, gint dh)
{
gint ypos, yinc, y;
gint xpos, xinc, x;
g_return_if_fail ((dw != 0) && (dh != 0));
ypos = 0x10000;
yinc = (sh << 16) / dh;
xinc = (sw << 16) / dw;
for (y = dh; y; y--) {
while (ypos > 0x10000) {
ypos -= 0x10000;
src += sw;
}
xpos = 0x10000;
{
guchar *destp = dest;
guchar *srcp = src;
for ( x=dw; x; x-- ) {
while (xpos >= 0x10000L) {
srcp++;
xpos -= 0x10000L;
}
*destp++ = *srcp;
xpos += xinc;
}
}
dest += dw;
ypos += yinc;
}
}
static void
gst_aasink_chain (GstPad *pad, GstBuffer *buf)
{
GstAASink *aasink;
GstClockTimeDiff jitter;
g_return_if_fail (pad != NULL);
g_return_if_fail (GST_IS_PAD (pad));
g_return_if_fail (buf != NULL);
aasink = GST_AASINK (gst_pad_get_parent (pad));
gst_aasink_scale (aasink,
GST_BUFFER_DATA (buf), /* src */
aa_image (aasink->context), /* dest */
aasink->width, /* sw */
aasink->height, /* sh */
aa_imgwidth (aasink->context), /* dw */
aa_imgheight (aasink->context)); /* dh */
GST_DEBUG (0,"videosink: clock wait: %llu\n", GST_BUFFER_TIMESTAMP(buf));
jitter = gst_clock_current_diff(aasink->clock, GST_BUFFER_TIMESTAMP (buf));
if (jitter > 500000 || jitter < -500000)
{
GST_DEBUG (0, "jitter: %lld\n", jitter);
gst_clock_set (aasink->clock, GST_BUFFER_TIMESTAMP (buf));
}
else {
gst_clock_wait(aasink->clock, GST_BUFFER_TIMESTAMP(buf), GST_OBJECT(aasink));
}
aa_render (aasink->context, &aasink->ascii_parms,
0, 0, aa_imgwidth (aasink->context), aa_imgheight (aasink->context));
aa_flush (aasink->context);
aa_getevent (aasink->context, FALSE);
g_signal_emit(G_OBJECT(aasink),gst_aasink_signals[SIGNAL_FRAME_DISPLAYED], 0);
gst_buffer_unref(buf);
}
static void
gst_aasink_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
{
GstAASink *aasink;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail (GST_IS_AASINK (object));
aasink = GST_AASINK (object);
switch (prop_id) {
case ARG_WIDTH:
aasink->ascii_surf.width = g_value_get_int (value);
break;
case ARG_HEIGHT:
aasink->ascii_surf.height = g_value_get_int (value);
break;
case ARG_DRIVER: {
aasink->aa_driver = g_value_get_int (value);
break;
}
case ARG_DITHER: {
aasink->ascii_parms.dither = g_value_get_int (value);
break;
}
case ARG_BRIGHTNESS: {
aasink->ascii_parms.bright = g_value_get_int (value);
break;
}
case ARG_CONTRAST: {
aasink->ascii_parms.contrast = g_value_get_int (value);
break;
}
case ARG_GAMMA: {
aasink->ascii_parms.gamma = g_value_get_float (value);
break;
}
case ARG_INVERSION: {
aasink->ascii_parms.inversion = g_value_get_boolean (value);
break;
}
case ARG_RANDOMVAL: {
aasink->ascii_parms.randomval = g_value_get_int (value);
break;
}
default:
break;
}
}
static void
gst_aasink_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
{
GstAASink *aasink;
/* it's not null if we got it, but it might not be ours */
aasink = GST_AASINK(object);
switch (prop_id) {
case ARG_WIDTH: {
g_value_set_int (value, aasink->ascii_surf.width);
break;
}
case ARG_HEIGHT: {
g_value_set_int (value, aasink->ascii_surf.height);
break;
}
case ARG_DRIVER: {
g_value_set_int (value, aasink->aa_driver);
break;
}
case ARG_DITHER: {
g_value_set_int (value, aasink->ascii_parms.dither);
break;
}
case ARG_BRIGHTNESS: {
g_value_set_int (value, aasink->ascii_parms.bright);
break;
}
case ARG_CONTRAST: {
g_value_set_int (value, aasink->ascii_parms.contrast);
break;
}
case ARG_GAMMA: {
g_value_set_float (value, aasink->ascii_parms.gamma);
break;
}
case ARG_INVERSION: {
g_value_set_int (value, aasink->ascii_parms.inversion);
break;
}
case ARG_RANDOMVAL: {
g_value_set_boolean (value, aasink->ascii_parms.randomval);
break;
}
case ARG_FRAMES_DISPLAYED: {
g_value_set_int (value, aasink->frames_displayed);
break;
}
case ARG_FRAME_TIME: {
g_value_set_int (value, aasink->frame_time/1000000);
break;
}
default: {
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
}
static gboolean
gst_aasink_open (GstAASink *aasink)
{
g_return_val_if_fail (!GST_FLAG_IS_SET (aasink ,GST_AASINK_OPEN), FALSE);
aa_recommendhidisplay(aa_drivers[aasink->aa_driver]->shortname);
aasink->context = aa_autoinit (&aasink->ascii_surf);
if (aasink->context == NULL) {
gst_element_error (GST_ELEMENT (aasink),
g_strdup("opening aalib context"));
return FALSE;
}
aa_autoinitkbd(aasink->context, 0);
aa_resizehandler(aasink->context, (void *)aa_resize);
GST_FLAG_SET (aasink, GST_AASINK_OPEN);
return TRUE;
}
static void
gst_aasink_close (GstAASink *aasink)
{
g_return_if_fail (GST_FLAG_IS_SET (aasink ,GST_AASINK_OPEN));
aa_close (aasink->context);
GST_FLAG_UNSET (aasink, GST_AASINK_OPEN);
}
static GstElementStateReturn
gst_aasink_change_state (GstElement *element)
{
g_return_val_if_fail (GST_IS_AASINK (element), GST_STATE_FAILURE);
if (GST_STATE_PENDING (element) == GST_STATE_NULL) {
if (GST_FLAG_IS_SET (element, GST_AASINK_OPEN))
gst_aasink_close (GST_AASINK (element));
} else {
if (!GST_FLAG_IS_SET (element, GST_AASINK_OPEN)) {
if (!gst_aasink_open (GST_AASINK (element)))
return GST_STATE_FAILURE;
}
}
if (GST_ELEMENT_CLASS (parent_class)->change_state)
return GST_ELEMENT_CLASS (parent_class)->change_state (element);
return GST_STATE_SUCCESS;
}
static gboolean
plugin_init (GModule *module, GstPlugin *plugin)
{
GstElementFactory *factory;
/* create an elementfactory for the aasink element */
factory = gst_elementfactory_new("aasink",GST_TYPE_AASINK,
&gst_aasink_details);
g_return_val_if_fail(factory != NULL, FALSE);
gst_elementfactory_add_padtemplate (factory,
GST_PADTEMPLATE_GET (sink_template));
gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory));
return TRUE;
}
GstPluginDesc plugin_desc = {
GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"aasink",
plugin_init
};
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