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gstreamer/sys/qcam/gstqcamsrc.c
Andy Wingo c07813ac2c /GstBuffer/GstData/ in the API where you can pass events. Fix the plugins to deal with that. Fixes #113488. 
Original commit message from CVS:
/GstBuffer/GstData/ in the API where you can pass events. Fix the plugins to deal with that. Fixes #113488.
2003-10-08 16:08:19 +00:00

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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 <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <string.h>
/*#define DEBUG_ENABLED */
#include <gstqcamsrc.h>
#include <gst/video/video.h>
#include "qcamip.h"
/* elementfactory information */
static GstElementDetails
gst_qcamsrc_details =
{
"QCam Source",
"Source/Video",
"LGPL",
"Read from a QuickCam device",
VERSION,
"Wim Taymans <wim.taymans@chello.be>",
"(C) 2001",
};
#define AE_NONE 3
#define DEF_WIDTH 320
#define DEF_HEIGHT 224
#define DEF_BRIGHTNESS 226
#define DEF_WHITEBAL 128
#define DEF_CONTRAST 72
#define DEF_TOP 1
#define DEF_LEFT 14
#define DEF_TRANSFER_SCALE 2
#define DEF_DEPTH 6
#define DEF_PORT 0x378
#define DEF_AUTOEXP AE_NONE
GST_PAD_TEMPLATE_FACTORY (gst_qcamsrc_src_factory,
"src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
gst_caps_new (
"gstqcam_src",
"video/x-raw-yuv",
GST_VIDEO_YUV_PAD_TEMPLATE_PROPS (
GST_PROPS_FOURCC (GST_STR_FOURCC ("I420")))
)
)
#define GST_TYPE_AUTOEXP_MODE (gst_autoexp_mode_get_type())
static GType
gst_autoexp_mode_get_type (void)
{
static GType autoexp_mode_type = 0;
static GEnumValue autoexp_modes[] = {
{ AE_ALL_AVG, "0", "Average Picture" },
{ AE_CTR_AVG, "1", "Average Center" },
{ AE_STD_AVG, "2", "Standard Deviation" },
{ AE_NONE, "3", "None" },
{ 0, NULL, NULL },
};
if (!autoexp_mode_type) {
autoexp_mode_type = g_enum_register_static ("GstAutoExposureMode", autoexp_modes);
}
return autoexp_mode_type;
}
/* QCamSrc signals and args */
enum {
/* FILL ME */
LAST_SIGNAL
};
enum {
ARG_0,
ARG_WIDTH,
ARG_HEIGHT,
ARG_BRIGHTNESS,
ARG_WHITEBAL,
ARG_CONTRAST,
ARG_TOP,
ARG_LEFT,
ARG_TRANSFER_SCALE,
ARG_DEPTH,
ARG_PORT,
ARG_AUTOEXP,
};
static void gst_qcamsrc_class_init (GstQCamSrcClass *klass);
static void gst_qcamsrc_init (GstQCamSrc *qcamsrc);
static void gst_qcamsrc_set_property (GObject *object, guint prop_id,
const GValue *value, GParamSpec *pspec);
static void gst_qcamsrc_get_property (GObject *object, guint prop_id,
GValue *value, GParamSpec *pspec);
static GstElementStateReturn gst_qcamsrc_change_state (GstElement *element);
static void gst_qcamsrc_close (GstQCamSrc *src);
static gboolean gst_qcamsrc_open (GstQCamSrc *src);
static GstData* gst_qcamsrc_get (GstPad *pad);
static GstElementClass *parent_class = NULL;
/*//static guint gst_qcamsrc_signals[LAST_SIGNAL] = { 0 }; */
GType
gst_qcamsrc_get_type (void)
{
static GType qcamsrc_type = 0;
if (!qcamsrc_type) {
static const GTypeInfo qcamsrc_info = {
sizeof(GstQCamSrcClass),
NULL,
NULL,
(GClassInitFunc)gst_qcamsrc_class_init,
NULL,
NULL,
sizeof(GstQCamSrc),
0,
(GInstanceInitFunc)gst_qcamsrc_init,
NULL
};
qcamsrc_type = g_type_register_static(GST_TYPE_ELEMENT, "GstQCamSrc", &qcamsrc_info, 0);
}
return qcamsrc_type;
}
static void
gst_qcamsrc_class_init (GstQCamSrcClass *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",
0, 320, DEF_WIDTH, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS(klass), ARG_HEIGHT,
g_param_spec_int ("height", "height", "height",
0, 240, DEF_HEIGHT, G_PARAM_READWRITE));
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_BRIGHTNESS,
g_param_spec_int ("brightness", "brightness", "brightness",
0, 255, DEF_BRIGHTNESS, G_PARAM_READWRITE));
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_WHITEBAL,
g_param_spec_int ("whitebal", "whitebal", "whitebal",
0, 255, DEF_WHITEBAL, G_PARAM_READWRITE));
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_CONTRAST,
g_param_spec_int ("contrast", "contrast", "contrast",
0, 255, DEF_CONTRAST, G_PARAM_READWRITE));
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_TOP,
g_param_spec_int ("top", "top", "top",
0, 240, DEF_TOP, G_PARAM_READWRITE));
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_LEFT,
g_param_spec_int ("left", "left", "left",
0, 320, DEF_LEFT, G_PARAM_READWRITE));
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_TRANSFER_SCALE,
g_param_spec_int ("transfer_scale", "transfer_scale", "transfer_scale",
1, 4, DEF_TRANSFER_SCALE, G_PARAM_READWRITE));
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_DEPTH,
g_param_spec_int ("depth", "depth", "depth",
4, 6, DEF_DEPTH, G_PARAM_READWRITE));
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_PORT,
g_param_spec_int ("port","port","port",
0, G_MAXINT, DEF_PORT, G_PARAM_READWRITE));
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_AUTOEXP,
g_param_spec_enum ("autoexposure", "autoexposure", "autoexposure",
GST_TYPE_AUTOEXP_MODE, DEF_AUTOEXP, G_PARAM_READWRITE));
gobject_class->set_property = gst_qcamsrc_set_property;
gobject_class->get_property = gst_qcamsrc_get_property;
gstelement_class->change_state = gst_qcamsrc_change_state;
}
static void
gst_qcamsrc_init (GstQCamSrc *qcamsrc)
{
qcamsrc->srcpad = gst_pad_new_from_template (
GST_PAD_TEMPLATE_GET (gst_qcamsrc_src_factory), "src");
gst_element_add_pad(GST_ELEMENT(qcamsrc),qcamsrc->srcpad);
gst_pad_set_get_function (qcamsrc->srcpad,gst_qcamsrc_get);
/* if the destination cannot say what it wants, we give this */
qcamsrc->qcam = qc_init();
qcamsrc->qcam->port = DEF_PORT;
qc_setwidth (qcamsrc->qcam, DEF_WIDTH);
qc_setheight (qcamsrc->qcam, DEF_HEIGHT);
qc_setbrightness (qcamsrc->qcam, DEF_BRIGHTNESS);
qc_setwhitebal (qcamsrc->qcam, DEF_WHITEBAL);
qc_setcontrast (qcamsrc->qcam, DEF_CONTRAST);
qc_settop (qcamsrc->qcam, DEF_TOP);
qc_setleft (qcamsrc->qcam, DEF_LEFT);
qc_settransfer_scale (qcamsrc->qcam, DEF_TRANSFER_SCALE);
qc_setbitdepth (qcamsrc->qcam, DEF_DEPTH);
qcamsrc->autoexposure = DEF_AUTOEXP;
if (qcamsrc->autoexposure != AE_NONE)
qcip_set_autoexposure_mode (qcamsrc->autoexposure);
}
static GstData*
gst_qcamsrc_get (GstPad *pad)
{
GstQCamSrc *qcamsrc;
GstBuffer *buf;
scanbuf *scan;
guchar *outdata;
gint i, frame, scale, convert;
g_return_val_if_fail (pad != NULL, NULL);
qcamsrc = GST_QCAMSRC (gst_pad_get_parent (pad));
scale = qc_gettransfer_scale (qcamsrc->qcam);
frame = qcamsrc->qcam->width * qcamsrc->qcam->height / (scale * scale);
buf = gst_buffer_new();
outdata = GST_BUFFER_DATA(buf) = g_malloc0((frame * 3) / 2);
GST_BUFFER_SIZE(buf) = (frame * 3) / 2;
qc_set (qcamsrc->qcam);
if (!GST_PAD_CAPS (pad)) {
gst_pad_try_set_caps (pad, GST_CAPS_NEW (
"qcam_caps",
"video/x-raw-yuv",
"format", GST_PROPS_FOURCC (GST_STR_FOURCC ("I420")),
"width", GST_PROPS_INT (qcamsrc->qcam->width / scale),
"height", GST_PROPS_INT (qcamsrc->qcam->height / scale),
"framerate", GST_PROPS_FLOAT (10.) /* bla? */
));
}
scan = qc_scan (qcamsrc->qcam);
/* FIXME, this doesn't seem to work... */
/*fixdark(qcamsrc->qcam, scan); */
if (qcamsrc->autoexposure != AE_NONE)
qcip_autoexposure(qcamsrc->qcam, scan);
convert = (qcamsrc->qcam->bpp==4?4:2);
for (i=frame; i; i--) {
outdata[i] = scan[i]<<convert;
}
memset (outdata+frame, 128, frame>>1);
g_free (scan);
return GST_DATA (buf);
}
static void
gst_qcamsrc_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
{
GstQCamSrc *src;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail(GST_IS_QCAMSRC(object));
src = GST_QCAMSRC(object);
switch (prop_id) {
case ARG_WIDTH:
qc_setwidth (src->qcam, g_value_get_int (value));
break;
case ARG_HEIGHT:
qc_setheight (src->qcam, g_value_get_int (value));
break;
case ARG_BRIGHTNESS:
qc_setbrightness (src->qcam, g_value_get_int (value));
break;
case ARG_WHITEBAL:
qc_setwhitebal (src->qcam, g_value_get_int (value));
break;
case ARG_CONTRAST:
qc_setcontrast (src->qcam, g_value_get_int (value));
break;
case ARG_TOP:
qc_settop (src->qcam, g_value_get_int (value));
break;
case ARG_LEFT:
qc_setleft (src->qcam, g_value_get_int (value));
break;
case ARG_TRANSFER_SCALE:
qc_settransfer_scale (src->qcam, g_value_get_int (value));
break;
case ARG_DEPTH:
qc_setbitdepth (src->qcam, g_value_get_int (value));
break;
case ARG_PORT:
src->qcam->port = g_value_get_int (value);
break;
case ARG_AUTOEXP:
src->autoexposure = g_value_get_enum (value);
if (src->autoexposure != AE_NONE)
qcip_set_autoexposure_mode (src->autoexposure);
break;
default:
break;
}
}
static void
gst_qcamsrc_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
{
GstQCamSrc *src;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail(GST_IS_QCAMSRC(object));
src = GST_QCAMSRC(object);
switch (prop_id) {
case ARG_WIDTH:
g_value_set_int (value, qc_getwidth (src->qcam));
break;
case ARG_HEIGHT:
g_value_set_int (value, qc_getheight (src->qcam));
break;
case ARG_BRIGHTNESS:
g_value_set_int (value, qc_getbrightness (src->qcam));
break;
case ARG_WHITEBAL:
g_value_set_int (value, qc_getwhitebal (src->qcam));
break;
case ARG_CONTRAST:
g_value_set_int (value, qc_getcontrast (src->qcam));
break;
case ARG_TOP:
g_value_set_int (value, qc_gettop (src->qcam));
break;
case ARG_LEFT:
g_value_set_int (value, qc_getleft (src->qcam));
break;
case ARG_TRANSFER_SCALE:
g_value_set_int (value, qc_gettransfer_scale (src->qcam));
break;
case ARG_DEPTH:
g_value_set_int (value, qc_getbitdepth (src->qcam));
break;
case ARG_PORT:
g_value_set_int (value, src->qcam->port);
break;
case ARG_AUTOEXP:
g_value_set_enum (value, src->autoexposure);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GstElementStateReturn
gst_qcamsrc_change_state (GstElement *element)
{
g_return_val_if_fail(GST_IS_QCAMSRC(element), FALSE);
/* if going down into NULL state, close the file if it's open */
if (GST_STATE_PENDING(element) == GST_STATE_NULL) {
if (GST_FLAG_IS_SET(element,GST_QCAMSRC_OPEN))
gst_qcamsrc_close(GST_QCAMSRC(element));
/* otherwise (READY or higher) we need to open the sound card */
} else {
if (!GST_FLAG_IS_SET(element,GST_QCAMSRC_OPEN)) {
gst_info ("qcamsrc: opening\n");
if (!gst_qcamsrc_open(GST_QCAMSRC(element))) {
gst_info ("qcamsrc: open failed\n");
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
gst_qcamsrc_open (GstQCamSrc *qcamsrc)
{
if (qc_open (qcamsrc->qcam)) {
g_warning("qcamsrc: Cannot open QuickCam.\n");
return FALSE;
}
GST_FLAG_SET(qcamsrc, GST_QCAMSRC_OPEN);
return TRUE;
}
static void
gst_qcamsrc_close (GstQCamSrc *src)
{
qc_close (src->qcam);
GST_FLAG_UNSET(src, GST_QCAMSRC_OPEN);
}
static gboolean
plugin_init (GModule *module, GstPlugin *plugin)
{
GstElementFactory *factory;
/* create an elementfactory for the qcamsrcparse element */
factory = gst_element_factory_new("qcamsrc",GST_TYPE_QCAMSRC,
&gst_qcamsrc_details);
g_return_val_if_fail(factory != NULL, FALSE);
gst_element_factory_add_pad_template (factory,
GST_PAD_TEMPLATE_GET (gst_qcamsrc_src_factory));
gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory));
return TRUE;
}
GstPluginDesc plugin_desc = {
GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"qcamsrc",
plugin_init
};
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