mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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0b3f5bfed8
Use gst_uri_has_protocol().
589 lines
14 KiB
C
589 lines
14 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 "vcdsrc.h"
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#define DEFAULT_DEVICE "/dev/cdrom"
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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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PROP_0,
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PROP_DEVICE,
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PROP_TRACK,
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PROP_MAX_ERRORS
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};
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static GstStaticPadTemplate srctemplate = 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_ANY);
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GST_DEBUG_CATEGORY_STATIC (gst_vcdsrc_debug);
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#define GST_CAT_DEFAULT gst_vcdsrc_debug
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static void gst_vcdsrc_uri_handler_init (gpointer g_iface, gpointer iface_data);
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static void
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gst_vcdsrc_setup_interfaces (GType type)
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{
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static const GInterfaceInfo urihandler_info = {
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gst_vcdsrc_uri_handler_init,
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NULL,
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NULL,
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};
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g_type_add_interface_static (type, GST_TYPE_URI_HANDLER, &urihandler_info);
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}
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GST_BOILERPLATE_FULL (GstVCDSrc, gst_vcdsrc, GstPushSrc, GST_TYPE_PUSH_SRC,
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gst_vcdsrc_setup_interfaces);
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static void gst_vcdsrc_finalize (GObject * object);
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static void gst_vcdsrc_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_vcdsrc_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static gboolean gst_vcdsrc_start (GstBaseSrc * src);
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static gboolean gst_vcdsrc_stop (GstBaseSrc * src);
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static GstFlowReturn gst_vcdsrc_create (GstPushSrc * src, GstBuffer ** out);
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static void
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gst_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_simple (element_class, "VCD Source",
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"Source/File",
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"Asynchronous read from VCD disk", "Erik Walthinsen <omega@cse.ogi.edu>");
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&srctemplate));
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}
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static void
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gst_vcdsrc_class_init (GstVCDSrcClass * klass)
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{
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GObjectClass *gobject_class;
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GstBaseSrcClass *basesrc_class;
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GstPushSrcClass *pushsrc_class;
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gobject_class = (GObjectClass *) klass;
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basesrc_class = (GstBaseSrcClass *) klass;
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pushsrc_class = (GstPushSrcClass *) klass;
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gobject_class->set_property = gst_vcdsrc_set_property;
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gobject_class->get_property = gst_vcdsrc_get_property;
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gobject_class->finalize = gst_vcdsrc_finalize;
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g_object_class_install_property (gobject_class, PROP_DEVICE,
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g_param_spec_string ("device", "Device",
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"CD device location", NULL, G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class, PROP_TRACK,
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g_param_spec_int ("track", "Track",
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"Track number to play", G_MININT, G_MAXINT, 0, G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class, PROP_MAX_ERRORS,
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g_param_spec_int ("max-errors", "Max. errors",
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"Maximum number of errors before bailing out",
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0, G_MAXINT, 16, G_PARAM_READWRITE));
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basesrc_class->start = gst_vcdsrc_start;
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basesrc_class->stop = gst_vcdsrc_stop;
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pushsrc_class->create = gst_vcdsrc_create;
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GST_DEBUG_CATEGORY_INIT (gst_vcdsrc_debug, "vcdsrc", 0,
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"VideoCD Source element");
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}
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static void
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gst_vcdsrc_init (GstVCDSrc * vcdsrc, GstVCDSrcClass * klass)
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{
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vcdsrc->device = g_strdup (DEFAULT_DEVICE);
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vcdsrc->track = 1;
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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->max_errors = 16;
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}
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static void
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gst_vcdsrc_finalize (GObject * object)
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{
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GstVCDSrc *vcdsrc = GST_VCDSRC (object);
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g_free (vcdsrc->device);
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static inline guint64
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gst_vcdsrc_msf (GstVCDSrc * vcdsrc, gint track)
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{
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return (vcdsrc->tracks[track].cdte_addr.msf.minute * 60 +
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vcdsrc->tracks[track].cdte_addr.msf.second) * 75 +
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vcdsrc->tracks[track].cdte_addr.msf.frame;
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}
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static void
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gst_vcdsrc_recalculate (GstVCDSrc * vcdsrc)
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{
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/* calculate track offset (beginning of track) */
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vcdsrc->trackoffset = gst_vcdsrc_msf (vcdsrc, vcdsrc->track);
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GST_DEBUG ("track offset is %ld", vcdsrc->trackoffset);
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}
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static void
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gst_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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GstVCDSrc *src;
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src = GST_VCDSRC (object);
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switch (prop_id) {
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case PROP_DEVICE:
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g_free (src->device);
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src->device = g_value_dup_string (value);
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break;
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case PROP_TRACK:
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if (g_value_get_int (value) >= 1 &&
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g_value_get_int (value) < src->numtracks) {
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src->track = g_value_get_int (value);
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gst_vcdsrc_recalculate (src);
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}
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break;
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case PROP_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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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 void
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gst_vcdsrc_get_property (GObject * object, guint prop_id, GValue * value,
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GParamSpec * pspec)
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{
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GstVCDSrc *src;
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g_return_if_fail (GST_IS_VCDSRC (object));
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src = GST_VCDSRC (object);
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switch (prop_id) {
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case PROP_DEVICE:
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g_value_set_string (value, src->device);
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break;
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case PROP_TRACK:
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g_value_set_int (value, src->track);
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break;
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case PROP_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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#if 0
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static gboolean
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gst_vcdsrc_srcpad_event (GstPad * pad, GstEvent * event)
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{
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GstVCDSrc *vcdsrc = GST_VCDSRC (gst_pad_get_parent (pad));
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gboolean res = TRUE;
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switch (GST_EVENT_TYPE (event)) {
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case GST_EVENT_SEEK:{
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gint64 new_off;
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if (GST_EVENT_SEEK_FORMAT (event) != GST_FORMAT_BYTES)
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return FALSE;
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new_off = GST_EVENT_SEEK_OFFSET (event);
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switch (GST_EVENT_SEEK_METHOD (event)) {
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case GST_SEEK_METHOD_SET:
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/* no-op */
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break;
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case GST_SEEK_METHOD_CUR:
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new_off += vcdsrc->curoffset * vcdsrc->bytes_per_read;
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break;
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case GST_SEEK_METHOD_END:
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new_off = (gst_vcdsrc_msf (vcdsrc, vcdsrc->track + 1) -
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vcdsrc->trackoffset) * vcdsrc->bytes_per_read - new_off;
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break;
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default:
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return FALSE;
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}
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if (new_off < 0 ||
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new_off > (gst_vcdsrc_msf (vcdsrc, vcdsrc->track + 1) -
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vcdsrc->trackoffset) * vcdsrc->bytes_per_read)
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return FALSE;
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vcdsrc->curoffset = new_off / vcdsrc->bytes_per_read;
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vcdsrc->tempoffset = new_off % vcdsrc->bytes_per_read;
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vcdsrc->discont = TRUE;
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if (GST_EVENT_SEEK_FLAGS (event) & GST_SEEK_FLAG_FLUSH)
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vcdsrc->flush = TRUE;
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break;
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}
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default:
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res = FALSE;
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break;
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}
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gst_event_unref (event);
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return res;
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}
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#endif
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#if 0
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static gboolean
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gst_vcdsrc_srcpad_query (GstPad * pad, GstQueryType type,
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GstFormat * format, gint64 * value)
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{
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GstVCDSrc *vcdsrc = GST_VCDSRC (gst_pad_get_parent (pad));
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gboolean res = TRUE;
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if (*format != GST_FORMAT_BYTES)
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return FALSE;
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switch (type) {
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case GST_QUERY_TOTAL:
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*value = (gst_vcdsrc_msf (vcdsrc, vcdsrc->track + 1) -
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vcdsrc->trackoffset) * vcdsrc->bytes_per_read;
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break;
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case GST_QUERY_POSITION:
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*value = vcdsrc->curoffset * vcdsrc->bytes_per_read;
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break;
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default:
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res = FALSE;
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break;
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}
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return res;
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}
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#endif
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static GstFlowReturn
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gst_vcdsrc_create (GstPushSrc * src, GstBuffer ** buf)
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{
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GstVCDSrc *vcdsrc;
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GstBuffer *outbuf;
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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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vcdsrc = GST_VCDSRC (src);
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offset = vcdsrc->trackoffset + vcdsrc->curoffset;
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if (offset >= gst_vcdsrc_msf (vcdsrc, vcdsrc->track + 1))
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goto eos;
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/* create the buffer */
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outbuf = gst_buffer_new_and_alloc (vcdsrc->bytes_per_read);
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msf = (struct cdrom_msf *) GST_BUFFER_DATA (outbuf);
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read:
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/* read it in from the device */
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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_LOG ("msf is %d:%d:%d", msf->cdmsf_min0, msf->cdmsf_sec0,
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msf->cdmsf_frame0);
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if (ioctl (vcdsrc->fd, CDROMREADRAW, msf) < 0) {
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if (++error_count <= vcdsrc->max_errors) {
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vcdsrc->curoffset++;
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offset++;
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goto read;
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}
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GST_ELEMENT_ERROR (vcdsrc, RESOURCE, READ, (NULL),
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("Read from cdrom at %d:%d:%d failed: %s",
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msf->cdmsf_min0, msf->cdmsf_sec0, msf->cdmsf_frame0,
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strerror (errno)));
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return GST_FLOW_ERROR;
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}
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GST_BUFFER_SIZE (outbuf) = vcdsrc->bytes_per_read;
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vcdsrc->curoffset += 1;
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*buf = outbuf;
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return GST_FLOW_OK;
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/* ERRORS */
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eos:
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{
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GST_DEBUG_OBJECT (vcdsrc, "got eos");
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return GST_FLOW_UNEXPECTED;
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}
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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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gst_vcdsrc_start (GstBaseSrc * bsrc)
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{
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int i;
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GstVCDSrc *src = GST_VCDSRC (bsrc);
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struct stat buf;
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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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goto open_failed;
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if (fstat (src->fd, &buf) < 0)
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goto toc_failed;
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/* If it's not a block device, then we need to try and
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* parse the cue file if there is one
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* FIXME implement */
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if (!S_ISBLK (buf.st_mode)) {
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GST_DEBUG ("Reading CUE files not handled yet, cannot process %s",
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GST_STR_NULL (src->device));
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goto toc_failed;
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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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goto toc_failed;
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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 + 1);
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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 == src->numtracks ? CDROM_LEADOUT : 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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goto toc_entry_failed;
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GST_DEBUG ("track %d begins at %d:%02d.%02d", i,
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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->curoffset = 0;
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gst_vcdsrc_recalculate (src);
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return TRUE;
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/* ERRORS */
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open_failed:
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{
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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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toc_failed:
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{
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GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ, (NULL), GST_ERROR_SYSTEM);
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close (src->fd);
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return FALSE;
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}
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toc_entry_failed:
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{
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GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ, (NULL), GST_ERROR_SYSTEM);
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g_free (src->tracks);
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close (src->fd);
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return FALSE;
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}
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}
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/* close the file */
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static gboolean
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gst_vcdsrc_stop (GstBaseSrc * bsrc)
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{
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GstVCDSrc *src = GST_VCDSRC (bsrc);
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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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g_free (src->tracks);
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return TRUE;
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}
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/*
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* URI interface.
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*/
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static guint
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gst_vcdsrc_uri_get_type (void)
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{
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return GST_URI_SRC;
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}
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static gchar **
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gst_vcdsrc_uri_get_protocols (void)
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{
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static gchar *protocols[] = { (char *) "vcd", NULL };
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return protocols;
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}
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static const gchar *
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gst_vcdsrc_uri_get_uri (GstURIHandler * handler)
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{
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GstVCDSrc *src = GST_VCDSRC (handler);
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gchar *result;
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GST_OBJECT_LOCK (src);
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result = g_strdup_printf ("vcd://%d", src->track);
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GST_OBJECT_UNLOCK (src);
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return result;
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}
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static gboolean
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gst_vcdsrc_uri_set_uri (GstURIHandler * handler, const gchar * uri)
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{
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GstVCDSrc *src = GST_VCDSRC (handler);
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gchar *location = NULL;
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gint tracknr;
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GST_DEBUG_OBJECT (src, "setting uri '%s'", uri);
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if (!gst_uri_has_protocol (uri, "vcd"))
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goto wrong_protocol;
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/* parse out the track in the location */
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if (!(location = gst_uri_get_location (uri)))
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goto no_location;
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|
|
GST_DEBUG_OBJECT (src, "have location '%s'", location);
|
|
|
|
/*
|
|
* URI structure: vcd:///path/to/device,track-num
|
|
*/
|
|
if (g_str_has_prefix (uri, "vcd://")) {
|
|
GST_OBJECT_LOCK (src);
|
|
g_free (src->device);
|
|
if (strlen (uri) > 6)
|
|
src->device = g_strdup (uri + 6);
|
|
else
|
|
src->device = g_strdup (DEFAULT_DEVICE);
|
|
GST_DEBUG_OBJECT (src, "configured device %s", src->device);
|
|
GST_OBJECT_UNLOCK (src);
|
|
}
|
|
|
|
/* Parse the track number */
|
|
{
|
|
char **split;
|
|
|
|
split = g_strsplit (location, ",", 2);
|
|
if (split == NULL || *split == NULL || split[1] == NULL) {
|
|
tracknr = 1;
|
|
} else if (sscanf (split[1], "%d", &tracknr) != 1 || tracknr < 1) {
|
|
g_strfreev (split);
|
|
goto invalid_location;
|
|
}
|
|
g_strfreev (split);
|
|
}
|
|
|
|
GST_OBJECT_LOCK (src);
|
|
src->track = tracknr;
|
|
GST_DEBUG_OBJECT (src, "configured track %d", src->track);
|
|
GST_OBJECT_UNLOCK (src);
|
|
|
|
g_free (location);
|
|
|
|
return TRUE;
|
|
|
|
/* ERRORS */
|
|
wrong_protocol:
|
|
{
|
|
GST_ERROR_OBJECT (src, "wrong protocol, uri = %s", uri);
|
|
return FALSE;
|
|
}
|
|
no_location:
|
|
{
|
|
GST_ERROR_OBJECT (src, "no location specified");
|
|
return FALSE;
|
|
}
|
|
invalid_location:
|
|
{
|
|
GST_ERROR_OBJECT (src, "Invalid location %s in URI '%s'", location, uri);
|
|
g_free (location);
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_vcdsrc_uri_handler_init (gpointer g_iface, gpointer iface_data)
|
|
{
|
|
GstURIHandlerInterface *iface = (GstURIHandlerInterface *) g_iface;
|
|
|
|
iface->get_type = gst_vcdsrc_uri_get_type;
|
|
iface->get_protocols = gst_vcdsrc_uri_get_protocols;
|
|
iface->get_uri = gst_vcdsrc_uri_get_uri;
|
|
iface->set_uri = gst_vcdsrc_uri_set_uri;
|
|
}
|
|
|
|
static gboolean
|
|
plugin_init (GstPlugin * plugin)
|
|
{
|
|
return gst_element_register (plugin, "vcdsrc", GST_RANK_SECONDARY,
|
|
GST_TYPE_VCDSRC);
|
|
}
|
|
|
|
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
|
|
GST_VERSION_MINOR,
|
|
"vcdsrc",
|
|
"Asynchronous read from VCD disk",
|
|
plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)
|