static gboolean
gst_vcdsrc_srcpad_query (GstPad * pad, GstQueryType type,
GstFormat * format, gint64 * value)
{
GstVCDSrc *vcdsrc = GST_VCDSRC (gst_pad_get_parent (pad));
gboolean res = TRUE;
if (*format != GST_FORMAT_BYTES)
return FALSE;
switch (type) {
case GST_QUERY_TOTAL:
*value = (gst_vcdsrc_msf (vcdsrc, vcdsrc->track + 1) -
vcdsrc->trackoffset) * vcdsrc->bytes_per_read;
break;
case GST_QUERY_POSITION:
*value = vcdsrc->curoffset * vcdsrc->bytes_per_read;
break;
default:
res = FALSE;
break;
}
return res;
}
static void
gst_vcdsrc_set_property (GObject * object, guint prop_id, const GValue * value,
GParamSpec * pspec)
{
GstVCDSrc *src;
src = GST_VCDSRC (object);
switch (prop_id) {
case PROP_DEVICE:
g_free (src->device);
src->device = g_value_dup_string (value);
break;
case PROP_TRACK:
if (g_value_get_int (value) >= 1 &&
g_value_get_int (value) < src->numtracks) {
src->track = g_value_get_int (value);
gst_vcdsrc_recalculate (src);
}
break;
case PROP_MAX_ERRORS:
src->max_errors = g_value_get_int (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
/* open the file, necessary to go to RUNNING state */
static gboolean
gst_vcdsrc_start (GstBaseSrc * bsrc)
{
int i;
GstVCDSrc *src = GST_VCDSRC (bsrc);
/* open the device */
src->fd = open (src->device, O_RDONLY);
if (src->fd < 0)
goto open_failed;
/* read the table of contents */
if (ioctl (src->fd, CDROMREADTOCHDR, &src->tochdr))
goto toc_failed;
/* allocate enough track structs for disk */
src->numtracks = (src->tochdr.cdth_trk1 - src->tochdr.cdth_trk0) + 1;
src->tracks = g_new (struct cdrom_tocentry, src->numtracks + 1);
/* read each track entry */
for (i = 0; i <= src->numtracks; i++) {
src->tracks[i].cdte_track = i == src->numtracks ? CDROM_LEADOUT : i + 1;
src->tracks[i].cdte_format = CDROM_MSF;
if (ioctl (src->fd, CDROMREADTOCENTRY, &src->tracks[i]))
goto toc_entry_failed;
GST_DEBUG ("track %d begins at %d:%02d.%02d", i,
src->tracks[i].cdte_addr.msf.minute,
src->tracks[i].cdte_addr.msf.second,
src->tracks[i].cdte_addr.msf.frame);
}
src->curoffset = 0;
gst_vcdsrc_recalculate (src);
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;
}
}
static void
gst_vcdsrc_finalize (GObject * object)
{
GstVCDSrc *vcdsrc = GST_VCDSRC (object);
g_free (vcdsrc->device);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static GstFlowReturn
gst_vcdsrc_create (GstPushSrc * src, GstBuffer ** buf)
{
GstVCDSrc *vcdsrc;
GstBuffer *outbuf;
gulong offset;
struct cdrom_msf *msf;
gint error_count = 0;
vcdsrc = GST_VCDSRC (src);
offset = vcdsrc->trackoffset + vcdsrc->curoffset;
if (offset >= gst_vcdsrc_msf (vcdsrc, vcdsrc->track + 1))
goto eos;
/* create the buffer */
outbuf = gst_buffer_new_and_alloc (vcdsrc->bytes_per_read);
msf = (struct cdrom_msf *) GST_BUFFER_DATA (outbuf);
read:
/* read it in from the device */
msf->cdmsf_frame0 = offset % 75;
msf->cdmsf_sec0 = (offset / 75) % 60;
msf->cdmsf_min0 = (offset / (75 * 60));
GST_LOG ("msf is %d:%d:%d", msf->cdmsf_min0, msf->cdmsf_sec0,
msf->cdmsf_frame0);
if (ioctl (vcdsrc->fd, CDROMREADRAW, msf) < 0) {
if (++error_count <= vcdsrc->max_errors) {
vcdsrc->curoffset++;
offset++;
goto read;
}
GST_ELEMENT_ERROR (vcdsrc, RESOURCE, READ, (NULL),
("Read from cdrom at %d:%d:%d failed: %s",
msf->cdmsf_min0, msf->cdmsf_sec0, msf->cdmsf_frame0,
strerror (errno)));
return GST_FLOW_ERROR;
}
GST_BUFFER_SIZE (outbuf) = vcdsrc->bytes_per_read;
vcdsrc->curoffset += 1;
*buf = outbuf;
return GST_FLOW_OK;
/* ERRORS */
eos:
{
GST_DEBUG_OBJECT (vcdsrc, "got eos");
return GST_FLOW_UNEXPECTED;
}
}
static const gchar *
gst_vcdsrc_uri_get_uri (GstURIHandler * handler)
{
GstVCDSrc *src = GST_VCDSRC (handler);
gchar *result;
GST_OBJECT_LOCK (src);
result = g_strdup_printf ("vcd://%d", src->track);
GST_OBJECT_UNLOCK (src);
return result;
}
static gboolean
gst_vcdsrc_srcpad_event (GstPad * pad, GstEvent * event)
{
GstVCDSrc *vcdsrc = GST_VCDSRC (gst_pad_get_parent (pad));
gboolean res = TRUE;
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_SEEK:{
gint64 new_off;
if (GST_EVENT_SEEK_FORMAT (event) != GST_FORMAT_BYTES)
return FALSE;
new_off = GST_EVENT_SEEK_OFFSET (event);
switch (GST_EVENT_SEEK_METHOD (event)) {
case GST_SEEK_METHOD_SET:
/* no-op */
break;
case GST_SEEK_METHOD_CUR:
new_off += vcdsrc->curoffset * vcdsrc->bytes_per_read;
break;
case GST_SEEK_METHOD_END:
new_off = (gst_vcdsrc_msf (vcdsrc, vcdsrc->track + 1) -
vcdsrc->trackoffset) * vcdsrc->bytes_per_read - new_off;
break;
default:
return FALSE;
}
if (new_off < 0 ||
new_off > (gst_vcdsrc_msf (vcdsrc, vcdsrc->track + 1) -
vcdsrc->trackoffset) * vcdsrc->bytes_per_read)
return FALSE;
vcdsrc->curoffset = new_off / vcdsrc->bytes_per_read;
vcdsrc->tempoffset = new_off % vcdsrc->bytes_per_read;
vcdsrc->discont = TRUE;
if (GST_EVENT_SEEK_FLAGS (event) & GST_SEEK_FLAG_FLUSH)
vcdsrc->flush = TRUE;
break;
}
default:
res = FALSE;
break;
}
gst_event_unref (event);
return res;
}
/* close the file */
static gboolean
gst_vcdsrc_stop (GstBaseSrc * bsrc)
{
GstVCDSrc *src = GST_VCDSRC (bsrc);
/* close the file */
close (src->fd);
/* zero out a lot of our state */
src->fd = 0;
src->curoffset = 0;
g_free (src->tracks);
return TRUE;
}
static void
gst_vcdsrc_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstVCDSrc *src;
g_return_if_fail (GST_IS_VCDSRC (object));
src = GST_VCDSRC (object);
switch (prop_id) {
case PROP_DEVICE:
g_value_set_string (value, src->device);
break;
case PROP_TRACK:
g_value_set_int (value, src->track);
break;
case PROP_MAX_ERRORS:
g_value_set_int (value, src->max_errors);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static gboolean
gst_vcdsrc_uri_set_uri (GstURIHandler * handler, const gchar * uri)
{
GstVCDSrc *src = GST_VCDSRC (handler);
gchar *location = NULL;
gint tracknr;
GST_DEBUG_OBJECT (src, "setting uri '%s'", uri);
if (!gst_uri_has_protocol (uri, "vcd"))
goto wrong_protocol;
/* parse out the track in the location */
if (!(location = gst_uri_get_location (uri)))
goto no_location;
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;
}
}
/* open the file, necessary to go to RUNNING state */
static gboolean
gst_vcdsrc_start (GstBaseSrc * bsrc)
{
int i;
GstVCDSrc *src = GST_VCDSRC (bsrc);
struct stat buf;
/* open the device */
src->fd = open (src->device, O_RDONLY);
if (src->fd < 0)
goto open_failed;
if (fstat (src->fd, &buf) < 0)
goto toc_failed;
/* If it's not a block device, then we need to try and
* parse the cue file if there is one
* FIXME implement */
if (!S_ISBLK (buf.st_mode)) {
GST_DEBUG ("Reading CUE files not handled yet, cannot process %s",
GST_STR_NULL (src->device));
goto toc_failed;
}
/* read the table of contents */
if (ioctl (src->fd, CDROMREADTOCHDR, &src->tochdr))
goto toc_failed;
/* allocate enough track structs for disk */
src->numtracks = (src->tochdr.cdth_trk1 - src->tochdr.cdth_trk0) + 1;
src->tracks = g_new (struct cdrom_tocentry, src->numtracks + 1);
/* read each track entry */
for (i = 0; i <= src->numtracks; i++) {
src->tracks[i].cdte_track = i == src->numtracks ? CDROM_LEADOUT : i + 1;
src->tracks[i].cdte_format = CDROM_MSF;
if (ioctl (src->fd, CDROMREADTOCENTRY, &src->tracks[i]))
goto toc_entry_failed;
GST_DEBUG ("track %d begins at %d:%02d.%02d", i,
src->tracks[i].cdte_addr.msf.minute,
src->tracks[i].cdte_addr.msf.second,
src->tracks[i].cdte_addr.msf.frame);
}
src->curoffset = 0;
gst_vcdsrc_recalculate (src);
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;
}
}
static GstFlowReturn
gst_vcdsrc_create (GstPushSrc * src, GstBuffer ** buf)
{
GstVCDSrc *vcdsrc;
GstBuffer *outbuf;
GstMapInfo map_info;
gulong offset;
struct cdrom_msf *msf;
gint error_count = 0;
vcdsrc = GST_VCDSRC (src);
offset = vcdsrc->trackoffset + vcdsrc->curoffset;
if (offset >= gst_vcdsrc_msf (vcdsrc, vcdsrc->track + 1))
goto eos;
/* create the buffer */
outbuf = gst_buffer_new_allocate (NULL, vcdsrc->bytes_per_read, NULL);
if (!outbuf)
goto error_unmapped;
if (!gst_buffer_map (outbuf, &map_info, GST_MAP_READWRITE))
goto error_unmapped;
msf = (struct cdrom_msf *) map_info.data;
read:
/* read it in from the device */
msf->cdmsf_frame0 = offset % 75;
msf->cdmsf_sec0 = (offset / 75) % 60;
msf->cdmsf_min0 = (offset / (75 * 60));
GST_LOG ("msf is %d:%d:%d", msf->cdmsf_min0, msf->cdmsf_sec0,
msf->cdmsf_frame0);
if (ioctl (vcdsrc->fd, CDROMREADRAW, msf) < 0) {
if (++error_count <= vcdsrc->max_errors) {
vcdsrc->curoffset++;
offset++;
goto read;
}
GST_ELEMENT_ERROR (vcdsrc, RESOURCE, READ, (NULL),
("Read from cdrom at %d:%d:%d failed: %s",
msf->cdmsf_min0, msf->cdmsf_sec0, msf->cdmsf_frame0,
strerror (errno)));
goto error_mapped;
}
gst_buffer_unmap (outbuf, &map_info);
vcdsrc->curoffset += 1;
*buf = outbuf;
return GST_FLOW_OK;
/* ERRORS */
error_mapped:
gst_buffer_unmap (outbuf, &map_info);
error_unmapped:
if (outbuf)
gst_buffer_unref (outbuf);
return GST_FLOW_ERROR;
eos:
{
GST_DEBUG_OBJECT (vcdsrc, "got eos");
return GST_FLOW_EOS;
}
}
static gboolean
gst_vcdsrc_uri_set_uri (GstURIHandler * handler, const gchar * uri)
{
GstVCDSrc *src = GST_VCDSRC (handler);
gchar *protocol;
gchar *location = NULL;
gint tracknr;
GST_DEBUG_OBJECT (src, "setting uri '%s'", uri);
protocol = gst_uri_get_protocol (uri);
if (protocol == NULL || strcmp (protocol, "vcd"))
goto wrong_protocol;
GST_DEBUG_OBJECT (src, "have protocol '%s'", protocol);
g_free (protocol);
/* parse out the track in the location */
if (!(location = gst_uri_get_location (uri)))
goto no_location;
GST_DEBUG_OBJECT (src, "have location '%s'", location);
if (*location == '\0') {
/* empty location selects track 1 */
tracknr = 1;
} else {
/* scan the track number */
if (sscanf (location, "%d", &tracknr) != 1)
goto invalid_location;
if (tracknr < 1)
goto invalid_location;
}
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 %s specified",
GST_STR_NULL (protocol));
g_free (protocol);
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;
}
}
