mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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8ab84441bb
Original commit message from CVS: fourth batch : remove ',' at end of enums as they could confuse older gcc, foreign compilers (forte) and gtk-doc (in gst-plugins/sys/ this time)
409 lines
12 KiB
C
409 lines
12 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., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, 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 <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <sys/ioctl.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <dirent.h>
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#include <errno.h>
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#include <linux/cdrom.h>
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#include <vcdsrc.h>
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static GstElementDetails vcdsrc_details = GST_ELEMENT_DETAILS ("VCD Source",
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"Source/File",
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"Asynchronous read from VCD disk",
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"Erik Walthinsen <omega@cse.ogi.edu>");
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/* VCDSrc 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_LOCATION,
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ARG_TRACK,
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ARG_BYTESPERREAD,
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ARG_OFFSET,
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ARG_MAX_ERRORS
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};
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static void vcdsrc_base_init (gpointer g_class);
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static void vcdsrc_class_init (VCDSrcClass * klass);
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static void vcdsrc_init (VCDSrc * vcdsrc);
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static void vcdsrc_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void vcdsrc_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static GstData *vcdsrc_get (GstPad * pad);
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/*static GstBuffer * vcdsrc_get_region (GstPad *pad,gulong offset,gulong size); */
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static GstElementStateReturn vcdsrc_change_state (GstElement * element);
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static void vcdsrc_recalculate (VCDSrc * vcdsrc);
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static GstElementClass *parent_class = NULL;
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/*static guint vcdsrc_signals[LAST_SIGNAL] = { 0 }; */
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GType
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vcdsrc_get_type (void)
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{
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static GType vcdsrc_type = 0;
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if (!vcdsrc_type) {
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static const GTypeInfo vcdsrc_info = {
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sizeof (VCDSrcClass),
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vcdsrc_base_init,
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NULL,
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(GClassInitFunc) vcdsrc_class_init,
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NULL,
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NULL,
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sizeof (VCDSrc),
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0,
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(GInstanceInitFunc) vcdsrc_init,
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};
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vcdsrc_type =
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g_type_register_static (GST_TYPE_ELEMENT, "VCDSrc", &vcdsrc_info, 0);
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}
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return vcdsrc_type;
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}
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static void
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vcdsrc_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_set_details (element_class, &vcdsrc_details);
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}
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static void
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vcdsrc_class_init (VCDSrcClass * 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_LOCATION, g_param_spec_string ("location", "location", "location", NULL, G_PARAM_READWRITE)); /* CHECKME */
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g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_TRACK, g_param_spec_int ("track", "track", "track", G_MININT, G_MAXINT, 0, G_PARAM_READWRITE)); /* CHECKME */
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g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_BYTESPERREAD, g_param_spec_int ("bytesperread", "bytesperread", "bytesperread", G_MININT, G_MAXINT, 0, G_PARAM_READABLE)); /* CHECKME */
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g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_OFFSET, g_param_spec_int ("offset", "offset", "offset", G_MININT, G_MAXINT, 0, G_PARAM_READWRITE)); /* CHECKME */
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g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_MAX_ERRORS,
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g_param_spec_int ("max-errors", "", "", 0, G_MAXINT, 16,
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G_PARAM_READWRITE));
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gobject_class->set_property = vcdsrc_set_property;
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gobject_class->get_property = vcdsrc_get_property;
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gstelement_class->change_state = vcdsrc_change_state;
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}
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static void
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vcdsrc_init (VCDSrc * vcdsrc)
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{
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vcdsrc->srcpad = gst_pad_new ("src", GST_PAD_SRC);
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gst_pad_set_get_function (vcdsrc->srcpad, vcdsrc_get);
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/* gst_pad_set_get_region_function (vcdsrc->srcpad, vcdsrc_getregion); */
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gst_element_add_pad (GST_ELEMENT (vcdsrc), vcdsrc->srcpad);
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vcdsrc->device = g_strdup ("/dev/cdrom");
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vcdsrc->track = 2;
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vcdsrc->fd = 0;
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vcdsrc->trackoffset = 0;
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vcdsrc->curoffset = 0;
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vcdsrc->bytes_per_read = VCD_BYTES_PER_SECTOR;
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vcdsrc->seq = 0;
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vcdsrc->max_errors = 16;
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}
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static void
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vcdsrc_set_property (GObject * object, guint prop_id, const GValue * value,
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GParamSpec * pspec)
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{
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VCDSrc *src;
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/* it's not null if we got it, but it might not be ours */
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g_return_if_fail (GST_IS_VCDSRC (object));
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src = VCDSRC (object);
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switch (prop_id) {
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case ARG_LOCATION:
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/* the element must be stopped in order to do this */
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/* g_return_if_fail(!GST_FLAG_IS_SET(src,GST_STATE_RUNNING)); */
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if (src->device)
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g_free (src->device);
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/* clear the filename if we get a NULL (is that possible?) */
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if (g_value_get_string (value) == NULL)
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src->device = NULL;
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/* otherwise set the new filename */
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else
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src->device = g_strdup (g_value_get_string (value));
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break;
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case ARG_TRACK:
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src->track = g_value_get_int (value);
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vcdsrc_recalculate (src);
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break;
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/* case ARG_BYTESPERREAD:
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src->bytes_per_read = g_value_get_int (value);
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break;*/
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case ARG_OFFSET:
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src->curoffset = g_value_get_int (value) / VCD_BYTES_PER_SECTOR;
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break;
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case ARG_MAX_ERRORS:
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src->max_errors = g_value_get_int (value);
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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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vcdsrc_get_property (GObject * object, guint prop_id, GValue * value,
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GParamSpec * pspec)
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{
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VCDSrc *src;
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/* it's not null if we got it, but it might not be ours */
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g_return_if_fail (GST_IS_VCDSRC (object));
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src = VCDSRC (object);
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switch (prop_id) {
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case ARG_LOCATION:
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g_value_set_string (value, src->device);
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break;
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case ARG_TRACK:
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g_value_set_int (value, src->track);
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break;
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case ARG_BYTESPERREAD:
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g_value_set_int (value, src->bytes_per_read);
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break;
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case ARG_OFFSET:
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g_value_set_int (value, src->curoffset * VCD_BYTES_PER_SECTOR);
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break;
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case ARG_MAX_ERRORS:
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g_value_set_int (value, src->max_errors);
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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 GstData *
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vcdsrc_get (GstPad * pad)
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{
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VCDSrc *vcdsrc;
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GstBuffer *buf;
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gulong offset;
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struct cdrom_msf *msf;
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gint error_count = 0;
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/* fprintf(stderr,"in vcdsrc_push\n"); */
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g_return_val_if_fail (pad != NULL, NULL);
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g_return_val_if_fail (GST_IS_PAD (pad), NULL);
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vcdsrc = VCDSRC (GST_OBJECT_PARENT (pad));
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g_return_val_if_fail (GST_FLAG_IS_SET (vcdsrc, VCDSRC_OPEN), NULL);
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/* create the buffer */
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/* FIXME: should eventually use a bufferpool for this */
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buf = gst_buffer_new ();
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g_return_val_if_fail (buf != NULL, NULL);
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/* allocate the space for the buffer data */
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GST_BUFFER_DATA (buf) = g_malloc (vcdsrc->bytes_per_read);
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memset (GST_BUFFER_DATA (buf), 0, vcdsrc->bytes_per_read);
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g_return_val_if_fail (GST_BUFFER_DATA (buf) != NULL, NULL);
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msf = (struct cdrom_msf *) GST_BUFFER_DATA (buf);
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read_sector:
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/* read it in from the device */
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offset = vcdsrc->trackoffset + vcdsrc->curoffset;
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msf->cdmsf_frame0 = offset % 75;
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msf->cdmsf_sec0 = (offset / 75) % 60;
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msf->cdmsf_min0 = (offset / (75 * 60));
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/*GST_INFO("msf is %d:%d:%d\n",msf->cdmsf_min0,msf->cdmsf_sec0, */
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/* msf->cdmsf_frame0); */
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if (ioctl (vcdsrc->fd, CDROMREADRAW, msf)) {
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if (++error_count > vcdsrc->max_errors) {
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gst_element_set_eos (GST_ELEMENT (vcdsrc));
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return GST_DATA (gst_event_new (GST_EVENT_EOS));
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}
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fprintf (stderr, "%s while reading raw data from cdrom at %d:%d:%d\n",
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strerror (errno), msf->cdmsf_min0, msf->cdmsf_sec0, msf->cdmsf_frame0);
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vcdsrc->curoffset += 1;
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/* Or we can return a zero-filled buffer. Which is better? */
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goto read_sector;
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}
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GST_BUFFER_OFFSET (buf) = vcdsrc->curoffset;
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GST_BUFFER_SIZE (buf) = vcdsrc->bytes_per_read;
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vcdsrc->curoffset += 1;
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return GST_DATA (buf);
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}
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/* open the file, necessary to go to RUNNING state */
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static gboolean
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vcdsrc_open_file (VCDSrc * src)
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{
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int i;
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g_return_val_if_fail (!GST_FLAG_IS_SET (src, VCDSRC_OPEN), FALSE);
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/* open the device */
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src->fd = open (src->device, O_RDONLY);
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if (src->fd < 0) {
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GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ, (NULL), GST_ERROR_SYSTEM);
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return FALSE;
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}
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/* read the table of contents */
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if (ioctl (src->fd, CDROMREADTOCHDR, &src->tochdr)) {
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perror ("reading toc of VCD\n");
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/* FIXME */
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/* exit(1); */
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}
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/* allocate enough track structs for disk */
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src->numtracks = (src->tochdr.cdth_trk1 - src->tochdr.cdth_trk0) + 1;
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src->tracks = g_new (struct cdrom_tocentry, src->numtracks);
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/* read each track entry */
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for (i = 0; i < src->numtracks; i++) {
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src->tracks[i].cdte_track = i + 1;
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src->tracks[i].cdte_format = CDROM_MSF;
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if (ioctl (src->fd, CDROMREADTOCENTRY, &src->tracks[i])) {
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perror ("reading tocentry");
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/* FIXME */
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/* exit(1);*/
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}
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fprintf (stderr, "VCDSrc: track begins at %d:%d:%d\n",
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src->tracks[i].cdte_addr.msf.minute,
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src->tracks[i].cdte_addr.msf.second,
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src->tracks[i].cdte_addr.msf.frame);
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}
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src->trackoffset =
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(((src->tracks[src->track - 1].cdte_addr.msf.minute * 60) +
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src->tracks[src->track - 1].cdte_addr.msf.second) * 75) +
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src->tracks[src->track - 1].cdte_addr.msf.frame;
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fprintf (stderr, "VCDSrc: track offset is %ld\n", src->trackoffset);
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GST_FLAG_SET (src, VCDSRC_OPEN);
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return TRUE;
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}
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/* close the file */
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static void
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vcdsrc_close_file (VCDSrc * src)
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{
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g_return_if_fail (GST_FLAG_IS_SET (src, VCDSRC_OPEN));
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/* close the file */
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close (src->fd);
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/* zero out a lot of our state */
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src->fd = 0;
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src->curoffset = 0;
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src->seq = 0;
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GST_FLAG_UNSET (src, VCDSRC_OPEN);
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}
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static GstElementStateReturn
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vcdsrc_change_state (GstElement * element)
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{
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g_return_val_if_fail (GST_IS_VCDSRC (element), GST_STATE_FAILURE);
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/* if going down into NULL state, close the file if it's open */
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if (GST_STATE_PENDING (element) == GST_STATE_NULL) {
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if (GST_FLAG_IS_SET (element, VCDSRC_OPEN))
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vcdsrc_close_file (VCDSRC (element));
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/* otherwise (READY or higher) we need to open the sound card */
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} else {
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if (!GST_FLAG_IS_SET (element, VCDSRC_OPEN)) {
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if (!vcdsrc_open_file (VCDSRC (element)))
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return GST_STATE_FAILURE;
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}
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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);
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return GST_STATE_SUCCESS;
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}
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static void
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vcdsrc_recalculate (VCDSrc * vcdsrc)
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{
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if (GST_FLAG_IS_SET (vcdsrc, VCDSRC_OPEN)) {
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/* calculate track offset (beginning of track) */
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vcdsrc->trackoffset =
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(((vcdsrc->tracks[vcdsrc->track - 1].cdte_addr.msf.minute * 60) +
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vcdsrc->tracks[vcdsrc->track - 1].cdte_addr.msf.second) * 75) +
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vcdsrc->tracks[vcdsrc->track - 1].cdte_addr.msf.frame;
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fprintf (stderr, "VCDSrc: track offset is %ld\n", vcdsrc->trackoffset);
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}
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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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return gst_element_register (plugin, "vcdsrc", GST_RANK_NONE,
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GST_TYPE_VCDSRC);
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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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"vcdsrc",
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"Asynchronous read from VCD disk",
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plugin_init, VERSION, GST_LICENSE, GST_PACKAGE, GST_ORIGIN)
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