gstreamer/ext/aalib/gstaasink.c

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/* 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 <sys/time.h>
#include "gstaasink.h"
#include <gst/video/video.h>
/* elementfactory information */
static GstElementDetails gst_aasink_details = {
"AA sink",
"Sink/Video",
"An ASCII art videosink",
"Wim Taymans <wim.taymans@chello.be>"
};
/* 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,
};
static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("I420"))
);
static void gst_aasink_base_init (gpointer g_class);
static void gst_aasink_class_init (GstAASinkClass * klass);
static void gst_aasink_init (GstAASink * aasink);
static void gst_aasink_set_clock (GstElement * element, GstClock * clock);
static void gst_aasink_chain (GstPad * pad, GstData * _data);
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),
gst_aasink_base_init,
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 n_drivers;
gint i;
for (n_drivers = 0; aa_drivers[n_drivers]; n_drivers++) {
/* count number of drivers */
}
drivers = g_new0 (GEnumValue, n_drivers + 1);
for (i = 0; i < n_drivers; i++) {
driver = aa_drivers[i];
drivers[i].value = i;
drivers[i].value_name = g_strdup (driver->shortname);
drivers[i].value_nick = g_strdup (driver->name);
}
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 n_ditherers;
gint i;
for (n_ditherers = 0; aa_dithernames[n_ditherers]; n_ditherers++) {
/* count number of ditherers */
}
ditherers = g_new0 (GEnumValue, n_ditherers + 1);
for (i = 0; i < n_ditherers; i++) {
ditherers[i].value = i;
ditherers[i].value_name = g_strdup (aa_dithernames[i]);
ditherers[i].value_nick = g_strdup (aa_dithernames[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_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 (&sink_template));
gst_element_class_set_details (element_class, &gst_aasink_details);
}
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;
gstelement_class->set_clock = gst_aasink_set_clock;
}
static GstCaps *
gst_aasink_fixate (GstPad * pad, const GstCaps * caps)
{
GstStructure *structure;
GstCaps *newcaps;
if (gst_caps_get_size (caps) > 1)
return NULL;
newcaps = gst_caps_copy (caps);
structure = gst_caps_get_structure (newcaps, 0);
if (gst_caps_structure_fixate_field_nearest_int (structure, "width", 320)) {
return newcaps;
}
if (gst_caps_structure_fixate_field_nearest_int (structure, "height", 240)) {
return newcaps;
}
if (gst_caps_structure_fixate_field_nearest_double (structure, "framerate",
30.0)) {
return newcaps;
}
gst_caps_free (newcaps);
return NULL;
}
static GstPadLinkReturn
gst_aasink_sinkconnect (GstPad * pad, const GstCaps * caps)
{
GstAASink *aasink;
GstStructure *structure;
aasink = GST_AASINK (gst_pad_get_parent (pad));
structure = gst_caps_get_structure (caps, 0);
gst_structure_get_int (structure, "width", &aasink->width);
gst_structure_get_int (structure, "height", &aasink->height);
/* FIXME aasink->format is never set */
GST_DEBUG ("aasink: setting %08lx (" GST_FOURCC_FORMAT ")",
aasink->format, GST_FOURCC_ARGS (aasink->format));
g_signal_emit (G_OBJECT (aasink), gst_aasink_signals[SIGNAL_HAVE_SIZE], 0,
aasink->width, aasink->height);
return GST_PAD_LINK_OK;
}
static void
gst_aasink_set_clock (GstElement * element, GstClock * clock)
{
GstAASink *aasink = GST_AASINK (element);
aasink->clock = clock;
}
static void
gst_aasink_init (GstAASink * aasink)
{
aasink->sinkpad =
gst_pad_new_from_template (gst_element_get_pad_template (GST_ELEMENT
(aasink), "sink"), "sink");
gst_element_add_pad (GST_ELEMENT (aasink), aasink->sinkpad);
gst_pad_set_chain_function (aasink->sinkpad, gst_aasink_chain);
gst_pad_set_link_function (aasink->sinkpad, gst_aasink_sinkconnect);
gst_pad_set_fixate_function (aasink->sinkpad, gst_aasink_fixate);
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;
aasink->clock = NULL;
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, GstData * _data)
{
GstBuffer *buf = GST_BUFFER (_data);
GstAASink *aasink;
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 ("videosink: clock wait: %" G_GUINT64_FORMAT,
GST_BUFFER_TIMESTAMP (buf));
if (aasink->clock && GST_BUFFER_TIMESTAMP_IS_VALID (buf)) {
gst_element_wait (GST_ELEMENT (aasink), GST_BUFFER_TIMESTAMP (buf));
}
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_enum (value);
break;
}
case ARG_DITHER:{
aasink->ascii_parms.dither = g_value_get_enum (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_enum (value, aasink->aa_driver);
break;
}
case ARG_DITHER:{
g_value_set_enum (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_boolean (value, aasink->ascii_parms.inversion);
break;
}
case ARG_RANDOMVAL:{
g_value_set_int (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), LIBRARY, TOO_LAZY, (NULL),
("error 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 (GstPlugin * plugin)
{
if (!gst_element_register (plugin, "aasink", GST_RANK_NONE, GST_TYPE_AASINK))
return FALSE;
return TRUE;
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"aasink",
"ASCII Art video sink",
plugin_init, VERSION, "GPL", GST_PACKAGE, GST_ORIGIN)