mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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445 lines
13 KiB
C
445 lines
13 KiB
C
/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <sys/ioctl.h>
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#include <sys/mman.h>
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#include <string.h>
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/*#define DEBUG_ENABLED */
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#include <gstqcamsrc.h>
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#include <gst/video/video.h>
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#include "qcamip.h"
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#define AE_NONE 3
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#define DEF_WIDTH 320
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#define DEF_HEIGHT 224
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#define DEF_BRIGHTNESS 226
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#define DEF_WHITEBAL 128
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#define DEF_CONTRAST 72
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#define DEF_TOP 1
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#define DEF_LEFT 14
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#define DEF_TRANSFER_SCALE 2
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#define DEF_DEPTH 6
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#define DEF_PORT 0x378
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#define DEF_AUTOEXP AE_NONE
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static GstStaticPadTemplate gst_qcamsrc_src_factory =
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GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("I420"))
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);
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#define GST_TYPE_AUTOEXP_MODE (gst_autoexp_mode_get_type())
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static GType
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gst_autoexp_mode_get_type (void)
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{
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static GType autoexp_mode_type = 0;
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static GEnumValue autoexp_modes[] = {
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{AE_ALL_AVG, "0", "Average Picture"},
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{AE_CTR_AVG, "1", "Average Center"},
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{AE_STD_AVG, "2", "Standard Deviation"},
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{AE_NONE, "3", "None"},
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{0, NULL, NULL},
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};
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if (!autoexp_mode_type) {
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autoexp_mode_type =
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g_enum_register_static ("GstAutoExposureMode", autoexp_modes);
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}
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return autoexp_mode_type;
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}
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/* QCamSrc signals and args */
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enum
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{
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/* FILL ME */
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LAST_SIGNAL
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};
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enum
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{
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ARG_0,
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ARG_WIDTH,
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ARG_HEIGHT,
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ARG_BRIGHTNESS,
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ARG_WHITEBAL,
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ARG_CONTRAST,
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ARG_TOP,
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ARG_LEFT,
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ARG_TRANSFER_SCALE,
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ARG_DEPTH,
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ARG_PORT,
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ARG_AUTOEXP
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};
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static void gst_qcamsrc_base_init (gpointer g_class);
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static void gst_qcamsrc_class_init (GstQCamSrcClass * klass);
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static void gst_qcamsrc_init (GstQCamSrc * qcamsrc);
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static void gst_qcamsrc_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_qcamsrc_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static GstStateChangeReturn gst_qcamsrc_change_state (GstElement * element,
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GstStateChange transition);
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static void gst_qcamsrc_close (GstQCamSrc * src);
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static gboolean gst_qcamsrc_open (GstQCamSrc * src);
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static GstData *gst_qcamsrc_get (GstPad * pad);
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static GstElementClass *parent_class = NULL;
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/*//static guint gst_qcamsrc_signals[LAST_SIGNAL] = { 0 }; */
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GType
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gst_qcamsrc_get_type (void)
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{
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static GType qcamsrc_type = 0;
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if (!qcamsrc_type) {
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static const GTypeInfo qcamsrc_info = {
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sizeof (GstQCamSrcClass),
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gst_qcamsrc_base_init,
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NULL,
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(GClassInitFunc) gst_qcamsrc_class_init,
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NULL,
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NULL,
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sizeof (GstQCamSrc),
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0,
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(GInstanceInitFunc) gst_qcamsrc_init,
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NULL
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};
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qcamsrc_type =
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g_type_register_static (GST_TYPE_ELEMENT, "GstQCamSrc", &qcamsrc_info,
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0);
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}
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return qcamsrc_type;
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}
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static void
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gst_qcamsrc_base_init (gpointer g_class)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&gst_qcamsrc_src_factory));
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gst_element_class_set_static_metadata (element_class, "QCam Source",
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"Source/Video",
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"Read from a QuickCam device", "Wim Taymans <wim.taymans@chello.be>");
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}
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static void
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gst_qcamsrc_class_init (GstQCamSrcClass * klass)
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{
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GObjectClass *gobject_class;
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GstElementClass *gstelement_class;
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gobject_class = (GObjectClass *) klass;
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gstelement_class = (GstElementClass *) klass;
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parent_class = g_type_class_peek_parent (klass);
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g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_WIDTH,
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g_param_spec_int ("width", "width", "width",
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0, 320, DEF_WIDTH, G_PARAM_READWRITE));
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g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_HEIGHT,
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g_param_spec_int ("height", "height", "height",
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0, 240, DEF_HEIGHT, G_PARAM_READWRITE));
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g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_BRIGHTNESS,
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g_param_spec_int ("brightness", "brightness", "brightness",
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0, 255, DEF_BRIGHTNESS, G_PARAM_READWRITE));
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g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_WHITEBAL,
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g_param_spec_int ("whitebal", "whitebal", "whitebal",
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0, 255, DEF_WHITEBAL, G_PARAM_READWRITE));
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g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_CONTRAST,
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g_param_spec_int ("contrast", "contrast", "contrast",
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0, 255, DEF_CONTRAST, G_PARAM_READWRITE));
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g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_TOP,
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g_param_spec_int ("top", "top", "top",
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0, 240, DEF_TOP, G_PARAM_READWRITE));
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g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_LEFT,
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g_param_spec_int ("left", "left", "left",
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0, 320, DEF_LEFT, G_PARAM_READWRITE));
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g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_TRANSFER_SCALE,
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g_param_spec_int ("transfer_scale", "transfer_scale", "transfer_scale",
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1, 4, DEF_TRANSFER_SCALE, G_PARAM_READWRITE));
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g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_DEPTH,
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g_param_spec_int ("depth", "depth", "depth",
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4, 6, DEF_DEPTH, G_PARAM_READWRITE));
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g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_PORT,
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g_param_spec_int ("port", "port", "port",
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0, G_MAXINT, DEF_PORT, G_PARAM_READWRITE));
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g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_AUTOEXP,
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g_param_spec_enum ("autoexposure", "autoexposure", "autoexposure",
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GST_TYPE_AUTOEXP_MODE, DEF_AUTOEXP, G_PARAM_READWRITE));
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gobject_class->set_property = gst_qcamsrc_set_property;
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gobject_class->get_property = gst_qcamsrc_get_property;
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gstelement_class->change_state = gst_qcamsrc_change_state;
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}
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static void
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gst_qcamsrc_init (GstQCamSrc * qcamsrc)
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{
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qcamsrc->srcpad =
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gst_pad_new_from_static_template (&gst_qcamsrc_src_factory, "src");
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gst_element_add_pad (GST_ELEMENT (qcamsrc), qcamsrc->srcpad);
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gst_pad_set_get_function (qcamsrc->srcpad, gst_qcamsrc_get);
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/* if the destination cannot say what it wants, we give this */
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qcamsrc->qcam = qc_init ();
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qcamsrc->qcam->port = DEF_PORT;
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qc_setwidth (qcamsrc->qcam, DEF_WIDTH);
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qc_setheight (qcamsrc->qcam, DEF_HEIGHT);
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qc_setbrightness (qcamsrc->qcam, DEF_BRIGHTNESS);
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qc_setwhitebal (qcamsrc->qcam, DEF_WHITEBAL);
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qc_setcontrast (qcamsrc->qcam, DEF_CONTRAST);
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qc_settop (qcamsrc->qcam, DEF_TOP);
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qc_setleft (qcamsrc->qcam, DEF_LEFT);
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qc_settransfer_scale (qcamsrc->qcam, DEF_TRANSFER_SCALE);
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qc_setbitdepth (qcamsrc->qcam, DEF_DEPTH);
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qcamsrc->autoexposure = DEF_AUTOEXP;
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if (qcamsrc->autoexposure != AE_NONE)
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qcip_set_autoexposure_mode (qcamsrc->autoexposure);
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}
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static GstData *
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gst_qcamsrc_get (GstPad * pad)
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{
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GstQCamSrc *qcamsrc;
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GstBuffer *buf;
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scanbuf *scan;
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guchar *outdata;
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gint i, frame, scale, convert;
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g_return_val_if_fail (pad != NULL, NULL);
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qcamsrc = GST_QCAMSRC (gst_pad_get_parent (pad));
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scale = qc_gettransfer_scale (qcamsrc->qcam);
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frame = qcamsrc->qcam->width * qcamsrc->qcam->height / (scale * scale);
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buf = gst_buffer_new ();
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outdata = GST_BUFFER_DATA (buf) = g_malloc0 ((frame * 3) / 2);
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GST_BUFFER_SIZE (buf) = (frame * 3) / 2;
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qc_set (qcamsrc->qcam);
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if (!GST_PAD_CAPS (pad)) {
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gst_pad_try_set_caps (pad, gst_caps_new_simple ("video/x-raw-yuv",
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"format", GST_TYPE_FOURCC, "I420",
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"width", G_TYPE_INT, qcamsrc->qcam->width / scale,
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"height", G_TYPE_INT, qcamsrc->qcam->height / scale,
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"framerate", G_TYPE_DOUBLE, 10., NULL));
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}
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scan = qc_scan (qcamsrc->qcam);
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/* FIXME, this doesn't seem to work... */
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/*fixdark(qcamsrc->qcam, scan); */
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if (qcamsrc->autoexposure != AE_NONE)
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qcip_autoexposure (qcamsrc->qcam, scan);
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convert = (qcamsrc->qcam->bpp == 4 ? 4 : 2);
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for (i = frame; i; i--) {
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outdata[i] = scan[i] << convert;
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}
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memset (outdata + frame, 128, frame >> 1);
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g_free (scan);
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return GST_DATA (buf);
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}
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static void
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gst_qcamsrc_set_property (GObject * object, guint prop_id, const GValue * value,
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GParamSpec * pspec)
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{
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GstQCamSrc *src;
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g_return_if_fail (GST_IS_QCAMSRC (object));
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src = GST_QCAMSRC (object);
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switch (prop_id) {
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case ARG_WIDTH:
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qc_setwidth (src->qcam, g_value_get_int (value));
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break;
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case ARG_HEIGHT:
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qc_setheight (src->qcam, g_value_get_int (value));
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break;
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case ARG_BRIGHTNESS:
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qc_setbrightness (src->qcam, g_value_get_int (value));
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break;
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case ARG_WHITEBAL:
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qc_setwhitebal (src->qcam, g_value_get_int (value));
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break;
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case ARG_CONTRAST:
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qc_setcontrast (src->qcam, g_value_get_int (value));
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break;
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case ARG_TOP:
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qc_settop (src->qcam, g_value_get_int (value));
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break;
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case ARG_LEFT:
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qc_setleft (src->qcam, g_value_get_int (value));
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break;
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case ARG_TRANSFER_SCALE:
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qc_settransfer_scale (src->qcam, g_value_get_int (value));
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break;
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case ARG_DEPTH:
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qc_setbitdepth (src->qcam, g_value_get_int (value));
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break;
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case ARG_PORT:
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src->qcam->port = g_value_get_int (value);
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break;
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case ARG_AUTOEXP:
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src->autoexposure = g_value_get_enum (value);
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if (src->autoexposure != AE_NONE)
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qcip_set_autoexposure_mode (src->autoexposure);
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break;
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default:
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break;
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}
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}
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static void
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gst_qcamsrc_get_property (GObject * object, guint prop_id, GValue * value,
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GParamSpec * pspec)
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{
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GstQCamSrc *src;
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g_return_if_fail (GST_IS_QCAMSRC (object));
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src = GST_QCAMSRC (object);
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switch (prop_id) {
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case ARG_WIDTH:
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g_value_set_int (value, qc_getwidth (src->qcam));
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break;
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case ARG_HEIGHT:
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g_value_set_int (value, qc_getheight (src->qcam));
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break;
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case ARG_BRIGHTNESS:
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g_value_set_int (value, qc_getbrightness (src->qcam));
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break;
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case ARG_WHITEBAL:
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g_value_set_int (value, qc_getwhitebal (src->qcam));
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break;
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case ARG_CONTRAST:
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g_value_set_int (value, qc_getcontrast (src->qcam));
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break;
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case ARG_TOP:
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g_value_set_int (value, qc_gettop (src->qcam));
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break;
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case ARG_LEFT:
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g_value_set_int (value, qc_getleft (src->qcam));
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break;
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case ARG_TRANSFER_SCALE:
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g_value_set_int (value, qc_gettransfer_scale (src->qcam));
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break;
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case ARG_DEPTH:
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g_value_set_int (value, qc_getbitdepth (src->qcam));
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break;
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case ARG_PORT:
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g_value_set_int (value, src->qcam->port);
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break;
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case ARG_AUTOEXP:
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g_value_set_enum (value, src->autoexposure);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static GstStateChangeReturn
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gst_qcamsrc_change_state (GstElement * element, GstStateChange transition)
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{
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g_return_val_if_fail (GST_IS_QCAMSRC (element), FALSE);
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switch (transition) {
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case GST_STATE_CHANGE_READY_TO_NULL:
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if (GST_OBJECT_FLAG_IS_SET (element, GST_QCAMSRC_OPEN))
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gst_qcamsrc_close (GST_QCAMSRC (element));
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break;
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case GST_STATE_CHANGE_NULL_TO_READY:
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if (!GST_OBJECT_FLAG_IS_SET (element, GST_QCAMSRC_OPEN)) {
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GST_DEBUG ("opening");
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if (!gst_qcamsrc_open (GST_QCAMSRC (element))) {
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GST_DEBUG ("open failed");
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return GST_STATE_CHANGE_FAILURE;
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}
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}
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break;
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default:
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break;
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}
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if (GST_ELEMENT_CLASS (parent_class)->change_state)
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return GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
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return GST_STATE_CHANGE_SUCCESS;
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}
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static gboolean
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gst_qcamsrc_open (GstQCamSrc * qcamsrc)
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{
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if (qc_open (qcamsrc->qcam)) {
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GST_ELEMENT_ERROR (qcamsrc, RESOURCE, OPEN_READ, (NULL),
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("Failed to open QuickCam"));
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return FALSE;
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}
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GST_OBJECT_FLAG_SET (qcamsrc, GST_QCAMSRC_OPEN);
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return TRUE;
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}
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static void
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gst_qcamsrc_close (GstQCamSrc * src)
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{
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qc_close (src->qcam);
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GST_OBJECT_FLAG_UNSET (src, GST_QCAMSRC_OPEN);
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}
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static gboolean
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plugin_init (GstPlugin * plugin)
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{
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if (!gst_element_register (plugin, "qcamsrc", GST_RANK_NONE,
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GST_TYPE_QCAMSRC))
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return FALSE;
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return TRUE;
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}
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GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
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GST_VERSION_MINOR,
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qcamsrc,
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"Read from a QuickCam device",
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plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)
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