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Port VCD element.

Browse source 
Original commit message from CVS:
* configure.ac:
* sys/Makefile.am:
* sys/vcd/Makefile.am:
* sys/vcd/vcdsrc.c: (gst_vcdsrc_setup_interfaces),
(gst_vcdsrc_base_init), (gst_vcdsrc_class_init), (gst_vcdsrc_init),
(gst_vcdsrc_msf), (gst_vcdsrc_recalculate),
(gst_vcdsrc_set_property), (gst_vcdsrc_get_property),
(gst_vcdsrc_create), (gst_vcdsrc_start), (gst_vcdsrc_stop),
(gst_vcdsrc_uri_set_uri):
* sys/vcd/vcdsrc.h:
Port VCD element.
This commit is contained in:
Wim Taymans 2007-06-13 11:37:36 +00:00
parent e47279f030
commit 2229e288b6
6 changed files with 180 additions and 329 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

14
ChangeLog
View file

@ -1,3 +1,17 @@
2007-06-13 Wim Taymans <wim@fluendo.com>
* configure.ac:
* sys/Makefile.am:
* sys/vcd/Makefile.am:
* sys/vcd/vcdsrc.c: (gst_vcdsrc_setup_interfaces),
(gst_vcdsrc_base_init), (gst_vcdsrc_class_init), (gst_vcdsrc_init),
(gst_vcdsrc_msf), (gst_vcdsrc_recalculate),
(gst_vcdsrc_set_property), (gst_vcdsrc_get_property),
(gst_vcdsrc_create), (gst_vcdsrc_start), (gst_vcdsrc_stop),
(gst_vcdsrc_uri_set_uri):
* sys/vcd/vcdsrc.h:
Port VCD element.
2007-06-12 Sebastien Moutte <sebastien@moutte.net> 2007-06-12 Sebastien Moutte <sebastien@moutte.net>
* win32/MANIFEST: * win32/MANIFEST:

8
configure.ac
View file

@ -286,6 +286,12 @@ AG_GST_CHECK_FEATURE(OPENGL, [Open GL], glsink, [
CPPFLAGS="$save_CPPFLAGS" CPPFLAGS="$save_CPPFLAGS"
LIBS="$save_LIBS" LIBS="$save_LIBS"
dnl check for Video CD
translit(dnm, m, l) AM_CONDITIONAL(USE_VCD, true)
AG_GST_CHECK_FEATURE(VCD, [Video CD], vcdsrc, [
AC_CHECK_HEADER(linux/cdrom.h, HAVE_VCD="yes", HAVE_VCD="no")
])
dnl Check for X11 dnl Check for X11
translit(dnm, m, l) AM_CONDITIONAL(USE_X, true) translit(dnm, m, l) AM_CONDITIONAL(USE_X, true)
AG_GST_CHECK_FEATURE(X, [X libraries and plugins], AG_GST_CHECK_FEATURE(X, [X libraries and plugins],
@ -872,6 +878,7 @@ dnl not building plugins with external dependencies,
dnl but we still need to set the conditionals dnl but we still need to set the conditionals
AM_CONDITIONAL(USE_OPENGL, false) AM_CONDITIONAL(USE_OPENGL, false)
AM_CONDITIONAL(USE_VCD, false)
AM_CONDITIONAL(USE_X, false) AM_CONDITIONAL(USE_X, false)
AM_CONDITIONAL(USE_ALSA, false) AM_CONDITIONAL(USE_ALSA, false)
AM_CONDITIONAL(USE_AMRWB, false) AM_CONDITIONAL(USE_AMRWB, false)
@ -992,6 +999,7 @@ gst-libs/gst/app/Makefile
sys/Makefile sys/Makefile
sys/glsink/Makefile sys/glsink/Makefile
sys/dvb/Makefile sys/dvb/Makefile
sys/vcd/Makefile
examples/Makefile examples/Makefile
examples/app/Makefile examples/app/Makefile
examples/directfb/Makefile examples/directfb/Makefile

14
sys/Makefile.am
View file

@ -10,11 +10,11 @@
# QCAM_DIR= # QCAM_DIR=
# endif # endif
# if USE_VCD if USE_VCD
# VCD_DIR=vcd VCD_DIR=vcd
# else else
# VCD_DIR= VCD_DIR=
# endif endif
# if USE_CDROM # if USE_CDROM
# CDROM_DIR=cdrom # CDROM_DIR=cdrom
@ -34,6 +34,6 @@ else
DVB_DIR= DVB_DIR=
endif endif
SUBDIRS = $(GL_DIR) $(DVB_DIR) SUBDIRS = $(GL_DIR) $(DVB_DIR) $(VCD_DIR)
DIST_SUBDIRS = glsink dvb DIST_SUBDIRS = glsink dvb vcd

4
sys/vcd/Makefile.am
View file

@ -2,8 +2,8 @@
plugin_LTLIBRARIES = libgstvcdsrc.la plugin_LTLIBRARIES = libgstvcdsrc.la
libgstvcdsrc_la_SOURCES = vcdsrc.c libgstvcdsrc_la_SOURCES = vcdsrc.c
libgstvcdsrc_la_CFLAGS = $(GST_CFLAGS) libgstvcdsrc_la_CFLAGS = $(GST_PLUGINS_BASE_CFLAGS) $(GST_CFLAGS)
libgstvcdsrc_la_LIBADD = libgstvcdsrc_la_LIBADD = $(GST_BASE_LIBS) $(GST_LIBS)
libgstvcdsrc_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS) libgstvcdsrc_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
noinst_HEADERS = vcdsrc.h noinst_HEADERS = vcdsrc.h

436
sys/vcd/vcdsrc.c
View file

@ -20,6 +20,7 @@
#ifdef HAVE_CONFIG_H #ifdef HAVE_CONFIG_H
#include "config.h" #include "config.h"
#endif #endif
#include <stdio.h> #include <stdio.h>
#include <stdlib.h> #include <stdlib.h>
#include <string.h> #include <string.h>
@ -32,9 +33,14 @@
#include <sys/types.h> #include <sys/types.h>
#include <dirent.h> #include <dirent.h>
#include <errno.h> #include <errno.h>
#include <linux/cdrom.h>
#include <vcdsrc.h> #include "vcdsrc.h"
static const GstElementDetails gst_vcdsrc_details =
GST_ELEMENT_DETAILS ("VCD Source",
"Source/File",
"Asynchronous read from VCD disk",
"Erik Walthinsen <omega@cse.ogi.edu>");
/* VCDSrc signals and args */ /* VCDSrc signals and args */
enum enum
@ -45,13 +51,10 @@ enum
enum enum
{ {
ARG_0, PROP_0,
ARG_LOCATION, PROP_DEVICE,
ARG_DEVICE, PROP_TRACK,
ARG_TRACK, PROP_MAX_ERRORS
ARG_BYTESPERREAD,
ARG_OFFSET,
ARG_MAX_ERRORS
}; };
static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src", static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
@ -62,187 +65,134 @@ static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
GST_DEBUG_CATEGORY_STATIC (gst_vcdsrc_debug); GST_DEBUG_CATEGORY_STATIC (gst_vcdsrc_debug);
#define GST_CAT_DEFAULT gst_vcdsrc_debug #define GST_CAT_DEFAULT gst_vcdsrc_debug
static void gst_vcdsrc_base_init (gpointer g_class); static void gst_vcdsrc_uri_handler_init (gpointer g_iface, gpointer iface_data);
static void gst_vcdsrc_class_init (GstVCDSrcClass * klass);
static void gst_vcdsrc_init (GstVCDSrc * vcdsrc); static void
gst_vcdsrc_setup_interfaces (GType type)
{
static const GInterfaceInfo urihandler_info = {
gst_vcdsrc_uri_handler_init,
NULL,
NULL,
};
g_type_add_interface_static (type, GST_TYPE_URI_HANDLER, &urihandler_info);
}
GST_BOILERPLATE_FULL (GstVCDSrc, gst_vcdsrc, GstPushSrc, GST_TYPE_PUSH_SRC,
gst_vcdsrc_setup_interfaces);
static void gst_vcdsrc_set_property (GObject * object, guint prop_id, static void gst_vcdsrc_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec); const GValue * value, GParamSpec * pspec);
static void gst_vcdsrc_get_property (GObject * object, guint prop_id, static void gst_vcdsrc_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec); GValue * value, GParamSpec * pspec);
static const GstEventMask *gst_vcdsrc_get_event_mask (GstPad * pad); static gboolean gst_vcdsrc_start (GstBaseSrc * src);
static const GstQueryType *gst_vcdsrc_get_query_types (GstPad * pad); static gboolean gst_vcdsrc_stop (GstBaseSrc * src);
static const GstFormat *gst_vcdsrc_get_formats (GstPad * pad); static GstFlowReturn gst_vcdsrc_create (GstPushSrc * src, GstBuffer ** out);
static gboolean gst_vcdsrc_srcpad_event (GstPad * pad, GstEvent * event);
static gboolean gst_vcdsrc_srcpad_query (GstPad * pad, GstQueryType type,
GstFormat * format, gint64 * value);
static GstData *gst_vcdsrc_get (GstPad * pad);
static GstStateChangeReturn gst_vcdsrc_change_state (GstElement * element,
GstStateChange transition);
static inline guint64 gst_vcdsrc_msf (GstVCDSrc * vcdsrc, gint track);
static void gst_vcdsrc_recalculate (GstVCDSrc * vcdsrc);
static void gst_vcdsrc_uri_handler_init (gpointer g_iface, gpointer iface_data);
static GstElementClass *parent_class = NULL;
/*static guint vcdsrc_signals[LAST_SIGNAL] = { 0 }; */
GType
gst_vcdsrc_get_type (void)
{
static GType gst_vcdsrc_type = 0;
if (!gst_vcdsrc_type) {
static const GTypeInfo gst_vcdsrc_info = {
sizeof (GstVCDSrcClass),
gst_vcdsrc_base_init,
NULL,
(GClassInitFunc) gst_vcdsrc_class_init,
NULL,
NULL,
sizeof (GstVCDSrc),
0,
(GInstanceInitFunc) gst_vcdsrc_init,
};
static const GInterfaceInfo urihandler_info = {
gst_vcdsrc_uri_handler_init,
NULL,
NULL
};
gst_vcdsrc_type =
g_type_register_static (GST_TYPE_ELEMENT,
"GstVCDSrc", &gst_vcdsrc_info, 0);
g_type_add_interface_static (gst_vcdsrc_type,
GST_TYPE_URI_HANDLER, &urihandler_info);
}
return gst_vcdsrc_type;
}
static void static void
gst_vcdsrc_base_init (gpointer g_class) gst_vcdsrc_base_init (gpointer g_class)
{ {
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class); GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
static const GstElementDetails gst_vcdsrc_details =
GST_ELEMENT_DETAILS ("VCD Source", gst_element_class_set_details (element_class, &gst_vcdsrc_details);
"Source/File",
"Asynchronous read from VCD disk",
"Erik Walthinsen <omega@cse.ogi.edu>");
gst_element_class_add_pad_template (element_class, gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&srctemplate)); gst_static_pad_template_get (&srctemplate));
gst_element_class_set_details (element_class, &gst_vcdsrc_details);
} }
static void static void
gst_vcdsrc_class_init (GstVCDSrcClass * klass) gst_vcdsrc_class_init (GstVCDSrcClass * klass)
{ {
GObjectClass *gobject_class = G_OBJECT_CLASS (klass); GObjectClass *gobject_class;
GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass); GstBaseSrcClass *basesrc_class;
GstPushSrcClass *pushsrc_class;
parent_class = g_type_class_peek_parent (klass); gobject_class = (GObjectClass *) klass;
basesrc_class = (GstBaseSrcClass *) klass;
g_object_class_install_property (gobject_class, ARG_LOCATION, pushsrc_class = (GstPushSrcClass *) klass;
g_param_spec_string ("location", "Location",
"CD device location (deprecated; use device)",
NULL, G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, ARG_DEVICE,
g_param_spec_string ("device", "Device",
"CD device location", NULL, G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, ARG_TRACK,
g_param_spec_int ("track", "Track",
"Track number to play", G_MININT, G_MAXINT, 0, G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, ARG_BYTESPERREAD,
g_param_spec_int ("bytesperread", "Bytes per read",
"Bytes to read per iteration (VCD sector size)",
G_MININT, G_MAXINT, 0, G_PARAM_READABLE));
g_object_class_install_property (gobject_class, ARG_OFFSET,
g_param_spec_int ("offset", "Offset", "Offset",
G_MININT, G_MAXINT, 0, G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, ARG_MAX_ERRORS,
g_param_spec_int ("max-errors", "Max. errors",
"Maximum number of errors before bailing out",
0, G_MAXINT, 16, G_PARAM_READWRITE));
gobject_class->set_property = gst_vcdsrc_set_property; gobject_class->set_property = gst_vcdsrc_set_property;
gobject_class->get_property = gst_vcdsrc_get_property; gobject_class->get_property = gst_vcdsrc_get_property;
gstelement_class->change_state = gst_vcdsrc_change_state; g_object_class_install_property (gobject_class, PROP_DEVICE,
g_param_spec_string ("device", "Device",
"CD device location", NULL, G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, PROP_TRACK,
g_param_spec_int ("track", "Track",
"Track number to play", G_MININT, G_MAXINT, 0, G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, PROP_MAX_ERRORS,
g_param_spec_int ("max-errors", "Max. errors",
"Maximum number of errors before bailing out",
0, G_MAXINT, 16, G_PARAM_READWRITE));
basesrc_class->start = gst_vcdsrc_start;
basesrc_class->stop = gst_vcdsrc_stop;
pushsrc_class->create = gst_vcdsrc_create;
GST_DEBUG_CATEGORY_INIT (gst_vcdsrc_debug, "vcdsrc", 0, GST_DEBUG_CATEGORY_INIT (gst_vcdsrc_debug, "vcdsrc", 0,
"VideoCD Source element"); "VideoCD Source element");
} }
static void static void
gst_vcdsrc_init (GstVCDSrc * vcdsrc) gst_vcdsrc_init (GstVCDSrc * vcdsrc, GstVCDSrcClass * klass)
{ {
vcdsrc->srcpad =
gst_pad_new_from_template (gst_static_pad_template_get (&srctemplate),
"src");
gst_pad_set_get_function (vcdsrc->srcpad, gst_vcdsrc_get);
#if 0
gst_pad_set_get_region_function (vcdsrc->srcpad, vcdsrc_getregion);
#endif
gst_pad_set_event_function (vcdsrc->srcpad, gst_vcdsrc_srcpad_event);
gst_pad_set_event_mask_function (vcdsrc->srcpad, gst_vcdsrc_get_event_mask);
gst_pad_set_query_function (vcdsrc->srcpad, gst_vcdsrc_srcpad_query);
gst_pad_set_query_type_function (vcdsrc->srcpad, gst_vcdsrc_get_query_types);
gst_pad_set_formats_function (vcdsrc->srcpad, gst_vcdsrc_get_formats);
gst_element_add_pad (GST_ELEMENT (vcdsrc), vcdsrc->srcpad);
vcdsrc->device = g_strdup ("/dev/cdrom"); vcdsrc->device = g_strdup ("/dev/cdrom");
vcdsrc->track = 1; vcdsrc->track = 1;
vcdsrc->fd = 0; vcdsrc->fd = 0;
vcdsrc->trackoffset = 0; vcdsrc->trackoffset = 0;
vcdsrc->curoffset = 0; vcdsrc->curoffset = 0;
vcdsrc->tempoffset = 0;
vcdsrc->discont = vcdsrc->flush = FALSE;
vcdsrc->bytes_per_read = VCD_BYTES_PER_SECTOR; vcdsrc->bytes_per_read = VCD_BYTES_PER_SECTOR;
vcdsrc->seq = 0;
vcdsrc->max_errors = 16; vcdsrc->max_errors = 16;
} }
static inline guint64
gst_vcdsrc_msf (GstVCDSrc * vcdsrc, gint track)
{
return (vcdsrc->tracks[track].cdte_addr.msf.minute * 60 +
vcdsrc->tracks[track].cdte_addr.msf.second) * 75 +
vcdsrc->tracks[track].cdte_addr.msf.frame;
}
static void
gst_vcdsrc_recalculate (GstVCDSrc * vcdsrc)
{
/* calculate track offset (beginning of track) */
vcdsrc->trackoffset = gst_vcdsrc_msf (vcdsrc, vcdsrc->track);
GST_DEBUG ("track offset is %ld", vcdsrc->trackoffset);
}
static void static void
gst_vcdsrc_set_property (GObject * object, guint prop_id, const GValue * value, gst_vcdsrc_set_property (GObject * object, guint prop_id, const GValue * value,
GParamSpec * pspec) GParamSpec * pspec)
{ {
GstVCDSrc *src; GstVCDSrc *src;
g_return_if_fail (GST_IS_VCDSRC (object));
src = GST_VCDSRC (object); src = GST_VCDSRC (object);
switch (prop_id) { switch (prop_id) {
case ARG_DEVICE: case PROP_DEVICE:
case ARG_LOCATION:
/* the element must be stopped in order to do this */
/* g_return_if_fail(!GST_OBJECT_FLAG_IS_SET(src,GST_STATE_RUNNING)); */
g_free (src->device); g_free (src->device);
/* clear the filename if we get a NULL (is that possible?) */ src->device = g_value_dup_string (value);
if (g_value_get_string (value) == NULL)
src->device = NULL;
/* otherwise set the new filename */
else
src->device = g_strdup (g_value_get_string (value));
break; break;
case ARG_TRACK: case PROP_TRACK:
if (g_value_get_int (value) >= 1 && if (g_value_get_int (value) >= 1 &&
g_value_get_int (value) < src->numtracks) { g_value_get_int (value) < src->numtracks) {
src->track = g_value_get_int (value); src->track = g_value_get_int (value);
gst_vcdsrc_recalculate (src); gst_vcdsrc_recalculate (src);
} }
break; break;
case ARG_MAX_ERRORS: case PROP_MAX_ERRORS:
src->max_errors = g_value_get_int (value); src->max_errors = g_value_get_int (value);
break; break;
default: default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break; break;
} }
} }
static void static void
@ -255,20 +205,13 @@ gst_vcdsrc_get_property (GObject * object, guint prop_id, GValue * value,
src = GST_VCDSRC (object); src = GST_VCDSRC (object);
switch (prop_id) { switch (prop_id) {
case ARG_DEVICE: case PROP_DEVICE:
case ARG_LOCATION:
g_value_set_string (value, src->device); g_value_set_string (value, src->device);
break; break;
case ARG_TRACK: case PROP_TRACK:
g_value_set_int (value, src->track); g_value_set_int (value, src->track);
break; break;
case ARG_BYTESPERREAD: case PROP_MAX_ERRORS:
g_value_set_int (value, src->bytes_per_read);
break;
case ARG_OFFSET:
g_value_set_int (value, src->curoffset * VCD_BYTES_PER_SECTOR);
break;
case ARG_MAX_ERRORS:
g_value_set_int (value, src->max_errors); g_value_set_int (value, src->max_errors);
break; break;
default: default:
@ -277,45 +220,7 @@ gst_vcdsrc_get_property (GObject * object, guint prop_id, GValue * value,
} }
} }
/* #if 0
* Querying and seeking.
*/
static const GstEventMask *
gst_vcdsrc_get_event_mask (GstPad * pad)
{
static const GstEventMask masks[] = {
{GST_EVENT_SEEK, GST_SEEK_METHOD_CUR |
GST_SEEK_METHOD_SET | GST_SEEK_METHOD_END | GST_SEEK_FLAG_FLUSH},
{0, 0}
};
return masks;
}
static const GstQueryType *
gst_vcdsrc_get_query_types (GstPad * pad)
{
static const GstQueryType types[] = {
GST_QUERY_TOTAL,
GST_QUERY_POSITION,
0
};
return types;
}
static const GstFormat *
gst_vcdsrc_get_formats (GstPad * pad)
{
static const GstFormat formats[] = {
GST_FORMAT_BYTES,
0,
};
return formats;
}
static gboolean static gboolean
gst_vcdsrc_srcpad_event (GstPad * pad, GstEvent * event) gst_vcdsrc_srcpad_event (GstPad * pad, GstEvent * event)
{ {
@ -366,7 +271,9 @@ gst_vcdsrc_srcpad_event (GstPad * pad, GstEvent * event)
return res; return res;
} }
#endif
#if 0
static gboolean static gboolean
gst_vcdsrc_srcpad_query (GstPad * pad, GstQueryType type, gst_vcdsrc_srcpad_query (GstPad * pad, GstQueryType type,
GstFormat * format, gint64 * value) GstFormat * format, gint64 * value)
@ -392,48 +299,26 @@ gst_vcdsrc_srcpad_query (GstPad * pad, GstQueryType type,
return res; return res;
} }
#endif
/* static GstFlowReturn
* Data. gst_vcdsrc_create (GstPushSrc * src, GstBuffer ** buf)
*/
static GstData *
gst_vcdsrc_get (GstPad * pad)
{ {
GstVCDSrc *vcdsrc; GstVCDSrc *vcdsrc;
GstFormat fmt = GST_FORMAT_BYTES; GstBuffer *outbuf;
GstBuffer *buf;
gulong offset; gulong offset;
struct cdrom_msf *msf; struct cdrom_msf *msf;
gint error_count = 0; gint error_count = 0;
g_return_val_if_fail (pad != NULL, NULL); vcdsrc = GST_VCDSRC (src);
g_return_val_if_fail (GST_IS_PAD (pad), NULL);
vcdsrc = GST_VCDSRC (GST_OBJECT_PARENT (pad));
g_return_val_if_fail (GST_OBJECT_FLAG_IS_SET (vcdsrc, VCDSRC_OPEN), NULL);
offset = vcdsrc->trackoffset + vcdsrc->curoffset; offset = vcdsrc->trackoffset + vcdsrc->curoffset;
if (offset >= gst_vcdsrc_msf (vcdsrc, vcdsrc->track + 1)) { if (offset >= gst_vcdsrc_msf (vcdsrc, vcdsrc->track + 1))
gst_element_set_eos (GST_ELEMENT (vcdsrc)); goto eos;
return GST_DATA (gst_event_new (GST_EVENT_EOS));
}
if (vcdsrc->discont) {
if (vcdsrc->flush) {
vcdsrc->flush = FALSE;
return GST_DATA (gst_event_new (GST_EVENT_FLUSH));
}
vcdsrc->discont = FALSE;
return GST_DATA (gst_event_new_discontinuous (FALSE,
GST_FORMAT_BYTES, vcdsrc->curoffset * vcdsrc->bytes_per_read,
GST_FORMAT_UNDEFINED));
}
/* create the buffer */ /* create the buffer */
/* FIXME: should eventually use a bufferpool for this */ outbuf = gst_buffer_new_and_alloc (vcdsrc->bytes_per_read);
buf = gst_buffer_new_and_alloc (vcdsrc->bytes_per_read); msf = (struct cdrom_msf *) GST_BUFFER_DATA (outbuf);
msf = (struct cdrom_msf *) GST_BUFFER_DATA (buf);
read: read:
/* read it in from the device */ /* read it in from the device */
@ -455,50 +340,39 @@ read:
("Read from cdrom at %d:%d:%d failed: %s", ("Read from cdrom at %d:%d:%d failed: %s",
msf->cdmsf_min0, msf->cdmsf_sec0, msf->cdmsf_frame0, msf->cdmsf_min0, msf->cdmsf_sec0, msf->cdmsf_frame0,
strerror (errno))); strerror (errno)));
return GST_FLOW_ERROR;
return GST_DATA (gst_event_new (GST_EVENT_INTERRUPT));
} }
GST_BUFFER_SIZE (outbuf) = vcdsrc->bytes_per_read;
gst_pad_query (pad, GST_QUERY_POSITION, &fmt,
(gint64 *) & GST_BUFFER_OFFSET (buf));
GST_BUFFER_SIZE (buf) = vcdsrc->bytes_per_read;
vcdsrc->curoffset += 1; vcdsrc->curoffset += 1;
if (vcdsrc->tempoffset != 0) { *buf = outbuf;
GstBuffer *sub;
sub = gst_buffer_create_sub (buf, vcdsrc->tempoffset, return GST_FLOW_OK;
vcdsrc->bytes_per_read - vcdsrc->tempoffset);
vcdsrc->tempoffset = 0; /* ERRORS */
gst_buffer_unref (buf); eos:
buf = sub; {
GST_DEBUG_OBJECT (vcdsrc, "got eos");
return GST_FLOW_UNEXPECTED;
} }
return GST_DATA (buf);
} }
/* open the file, necessary to go to RUNNING state */ /* open the file, necessary to go to RUNNING state */
static gboolean static gboolean
gst_vcdsrc_open_file (GstVCDSrc * src) gst_vcdsrc_start (GstBaseSrc * bsrc)
{ {
int i; int i;
GstVCDSrc *src = GST_VCDSRC (bsrc);
g_return_val_if_fail (!GST_OBJECT_FLAG_IS_SET (src, VCDSRC_OPEN), FALSE);
/* open the device */ /* open the device */
src->fd = open (src->device, O_RDONLY); src->fd = open (src->device, O_RDONLY);
if (src->fd < 0) { if (src->fd < 0)
GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ, (NULL), GST_ERROR_SYSTEM); goto open_failed;
return FALSE;
}
/* read the table of contents */ /* read the table of contents */
if (ioctl (src->fd, CDROMREADTOCHDR, &src->tochdr)) { if (ioctl (src->fd, CDROMREADTOCHDR, &src->tochdr))
GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ, (NULL), GST_ERROR_SYSTEM); goto toc_failed;
close (src->fd);
return FALSE;
}
/* allocate enough track structs for disk */ /* allocate enough track structs for disk */
src->numtracks = (src->tochdr.cdth_trk1 - src->tochdr.cdth_trk0) + 1; src->numtracks = (src->tochdr.cdth_trk1 - src->tochdr.cdth_trk0) + 1;
@ -508,29 +382,47 @@ gst_vcdsrc_open_file (GstVCDSrc * src)
for (i = 0; i <= src->numtracks; i++) { for (i = 0; i <= src->numtracks; i++) {
src->tracks[i].cdte_track = i == src->numtracks ? CDROM_LEADOUT : i + 1; src->tracks[i].cdte_track = i == src->numtracks ? CDROM_LEADOUT : i + 1;
src->tracks[i].cdte_format = CDROM_MSF; src->tracks[i].cdte_format = CDROM_MSF;
if (ioctl (src->fd, CDROMREADTOCENTRY, &src->tracks[i])) { if (ioctl (src->fd, CDROMREADTOCENTRY, &src->tracks[i]))
GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ, (NULL), GST_ERROR_SYSTEM); goto toc_entry_failed;
g_free (src->tracks);
close (src->fd);
return FALSE;
}
GST_DEBUG ("track %d begins at %d:%02d.%02d", i, GST_DEBUG ("track %d begins at %d:%02d.%02d", i,
src->tracks[i].cdte_addr.msf.minute, src->tracks[i].cdte_addr.msf.minute,
src->tracks[i].cdte_addr.msf.second, src->tracks[i].cdte_addr.msf.second,
src->tracks[i].cdte_addr.msf.frame); src->tracks[i].cdte_addr.msf.frame);
} }
GST_OBJECT_FLAG_SET (src, VCDSRC_OPEN); src->curoffset = 0;
gst_vcdsrc_recalculate (src); gst_vcdsrc_recalculate (src);
return TRUE; return TRUE;
/* ERRORS */
open_failed:
{
GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ, (NULL), GST_ERROR_SYSTEM);
return FALSE;
}
toc_failed:
{
GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ, (NULL), GST_ERROR_SYSTEM);
close (src->fd);
return FALSE;
}
toc_entry_failed:
{
GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ, (NULL), GST_ERROR_SYSTEM);
g_free (src->tracks);
close (src->fd);
return FALSE;
}
} }
/* close the file */ /* close the file */
static void static gboolean
gst_vcdsrc_close_file (GstVCDSrc * src) gst_vcdsrc_stop (GstBaseSrc * bsrc)
{ {
g_return_if_fail (GST_OBJECT_FLAG_IS_SET (src, VCDSRC_OPEN)); GstVCDSrc *src = GST_VCDSRC (bsrc);
/* close the file */ /* close the file */
close (src->fd); close (src->fd);
@ -538,58 +430,10 @@ gst_vcdsrc_close_file (GstVCDSrc * src)
/* zero out a lot of our state */ /* zero out a lot of our state */
src->fd = 0; src->fd = 0;
src->curoffset = 0; src->curoffset = 0;
src->seq = 0;
g_free (src->tracks); g_free (src->tracks);
GST_OBJECT_FLAG_UNSET (src, VCDSRC_OPEN); return TRUE;
}
static GstStateChangeReturn
gst_vcdsrc_change_state (GstElement * element, GstStateChange transition)
{
GstVCDSrc *vcdsrc = GST_VCDSRC (element);
switch (transition) {
case GST_STATE_CHANGE_READY_TO_NULL:
if (GST_OBJECT_FLAG_IS_SET (element, VCDSRC_OPEN))
gst_vcdsrc_close_file (vcdsrc);
break;
case GST_STATE_CHANGE_PAUSED_TO_READY:
vcdsrc->curoffset = 0;
vcdsrc->discont = vcdsrc->flush = FALSE;
break;
case GST_STATE_CHANGE_NULL_TO_READY:
if (!GST_OBJECT_FLAG_IS_SET (element, VCDSRC_OPEN))
if (!gst_vcdsrc_open_file (vcdsrc))
return GST_STATE_CHANGE_FAILURE;
break;
default:
break;
}
if (GST_ELEMENT_CLASS (parent_class)->change_state)
return GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
return GST_STATE_CHANGE_SUCCESS;
}
static inline guint64
gst_vcdsrc_msf (GstVCDSrc * vcdsrc, gint track)
{
return (vcdsrc->tracks[track].cdte_addr.msf.minute * 60 +
vcdsrc->tracks[track].cdte_addr.msf.second) * 75 +
vcdsrc->tracks[track].cdte_addr.msf.frame;
}
static void
gst_vcdsrc_recalculate (GstVCDSrc * vcdsrc)
{
if (GST_OBJECT_FLAG_IS_SET (vcdsrc, VCDSRC_OPEN)) {
/* calculate track offset (beginning of track) */
vcdsrc->trackoffset = gst_vcdsrc_msf (vcdsrc, vcdsrc->track);
GST_DEBUG ("track offset is %ld", vcdsrc->trackoffset);
}
} }
/* /*
@ -620,7 +464,9 @@ static gboolean
gst_vcdsrc_uri_set_uri (GstURIHandler * handler, const gchar * uri) gst_vcdsrc_uri_set_uri (GstURIHandler * handler, const gchar * uri)
{ {
gboolean ret; gboolean ret;
gchar *protocol = gst_uri_get_protocol (uri); gchar *protocol;
protocol = gst_uri_get_protocol (uri);
ret = (protocol && !strcmp (protocol, "vcd")) ? TRUE : FALSE; ret = (protocol && !strcmp (protocol, "vcd")) ? TRUE : FALSE;
g_free (protocol); g_free (protocol);

33
sys/vcd/vcdsrc.h
View file

@ -21,9 +21,11 @@
#ifndef __VCDSRC_H__ #ifndef __VCDSRC_H__
#define __VCDSRC_H__ #define __VCDSRC_H__
#include <gst/gst.h>
#include <linux/cdrom.h> #include <linux/cdrom.h>
#include <gst/gst.h>
#include <gst/base/gstpushsrc.h>
G_BEGIN_DECLS G_BEGIN_DECLS
#define VCD_BYTES_PER_SECTOR 2352 #define VCD_BYTES_PER_SECTOR 2352
@ -39,53 +41,34 @@ G_BEGIN_DECLS
#define GST_IS_VCDSRC_CLASS(klass) \ #define GST_IS_VCDSRC_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_VCDSRC)) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_VCDSRC))
/* NOTE: per-element flags start with 16 for now */
typedef enum {
VCDSRC_OPEN = (GST_ELEMENT_FLAG_LAST << 0),
VCDSRC_FLAG_LAST = (GST_ELEMENT_FLAG_LAST << 2),
} GstVCDSrcFlags;
typedef struct _GstVCDSrc GstVCDSrc; typedef struct _GstVCDSrc GstVCDSrc;
typedef struct _GstVCDSrcClass GstVCDSrcClass; typedef struct _GstVCDSrcClass GstVCDSrcClass;
struct _GstVCDSrc { struct _GstVCDSrc {
GstElement element; GstPushSrc parent_object;
/* pads */
GstPad *srcpad;
/* device */ /* device */
gchar *device; gchar *device;
/* track number */ /* track number */
gint track; gint track;
int max_errors;
/* fd */ /* fd */
gint fd; gint fd;
struct cdrom_tochdr tochdr;
gint numtracks; gint numtracks;
struct cdrom_tochdr tochdr;
struct cdrom_tocentry *tracks; struct cdrom_tocentry *tracks;
/* current time offset */ /* current time offset */
gulong trackoffset; gulong trackoffset;
gulong frameoffset;
/* bytes offset in next buf */
gulong tempoffset;
gboolean discont, flush;
gulong curoffset; /* current offset in file */ gulong curoffset; /* current offset in file */
gulong bytes_per_read; /* bytes per read */ gulong bytes_per_read; /* bytes per read */
gulong seq; /* buffer sequence number */
int max_errors;
}; };
struct _GstVCDSrcClass { struct _GstVCDSrcClass {
GstElementClass parent_class; GstPushSrcClass parent_class;
}; };
GType gst_vcdsrc_get_type(void);
G_END_DECLS G_END_DECLS
#endif /* __VCDSRC_H__ */ #endif /* __VCDSRC_H__ */