/* open the file, do stuff necessary to go to PAUSED state */
static gboolean
gst_gnome_vfs_src_start (GstBaseSrc * basesrc)
{
GnomeVFSResult res;
GstGnomeVFSSrc *src;
src = GST_GNOME_VFS_SRC (basesrc);
gst_gnome_vfs_src_push_callbacks (src);
if (src->uri != NULL) {
GnomeVFSOpenMode mode = GNOME_VFS_OPEN_READ;
/* this can block... */
res = gnome_vfs_open_uri (&src->handle, src->uri, mode);
if (res != GNOME_VFS_OK)
goto open_failed;
src->own_handle = TRUE;
} else if (!src->handle) {
goto no_filename;
} else {
src->own_handle = FALSE;
}
if (gnome_vfs_seek (src->handle, GNOME_VFS_SEEK_CURRENT, 0) == GNOME_VFS_OK) {
src->seekable = TRUE;
} else {
src->seekable = FALSE;
}
return TRUE;
/* ERRORS */
open_failed:
{
gchar *filename = gnome_vfs_uri_to_string (src->uri,
GNOME_VFS_URI_HIDE_PASSWORD);
gst_gnome_vfs_src_pop_callbacks (src);
if (res == GNOME_VFS_ERROR_NOT_FOUND ||
res == GNOME_VFS_ERROR_HOST_NOT_FOUND ||
res == GNOME_VFS_ERROR_SERVICE_NOT_AVAILABLE) {
GST_ELEMENT_ERROR (src, RESOURCE, NOT_FOUND, (NULL),
("Could not open vfs file \"%s\" for reading: %s (%d)",
filename, gnome_vfs_result_to_string (res), res));
} else {
GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ, (NULL),
("Could not open vfs file \"%s\" for reading: %s (%d)",
filename, gnome_vfs_result_to_string (res), res));
}
g_free (filename);
return FALSE;
}
no_filename:
{
GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ, (NULL), ("No filename given"));
return FALSE;
}
}
static gboolean
gst_gnome_vfs_sink_handle_event (GstBaseSink * basesink, GstEvent * event)
{
GstGnomeVFSSink *sink;
gboolean ret = TRUE;
sink = GST_GNOME_VFS_SINK (basesink);
GST_DEBUG_OBJECT (sink, "processing %s event", GST_EVENT_TYPE_NAME (event));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_NEWSEGMENT: {
GnomeVFSResult res;
GstFormat format;
gint64 offset;
gst_event_parse_new_segment (event, NULL, NULL, &format, &offset,
NULL, NULL);
if (format != GST_FORMAT_BYTES) {
GST_WARNING_OBJECT (sink, "ignored NEWSEGMENT event in %s format",
gst_format_get_name (format));
break;
}
GST_LOG_OBJECT (sink, "seeking to offset %" G_GINT64_FORMAT, offset);
res = gnome_vfs_seek (sink->handle, GNOME_VFS_SEEK_START, offset);
if (res != GNOME_VFS_OK) {
GST_ERROR_OBJECT (sink, "Failed to seek to offset %"
G_GINT64_FORMAT ": %s", offset, gnome_vfs_result_to_string (res));
ret = FALSE;
} else {
sink->current_pos = offset;
}
break;
}
case GST_EVENT_FLUSH_START:
case GST_EVENT_EOS: {
/* No need to flush with GnomeVfs */
break;
}
default:
break;
}
return ret;
}
/*
* Read a new buffer from src->reqoffset, takes care of events
* and seeking and such.
*/
static GstFlowReturn
gst_gnome_vfs_src_create (GstBaseSrc * basesrc, guint64 offset, guint size,
GstBuffer ** buffer)
{
GnomeVFSResult res;
GstBuffer *buf;
GnomeVFSFileSize readbytes;
guint8 *data;
guint todo;
GstGnomeVFSSrc *src;
src = GST_GNOME_VFS_SRC (basesrc);
GST_DEBUG ("now at %" G_GINT64_FORMAT ", reading from %" G_GUINT64_FORMAT
", size %u", src->curoffset, offset, size);
/* seek if required */
if (G_UNLIKELY (src->curoffset != offset)) {
GST_DEBUG ("need to seek");
if (src->seekable) {
GST_DEBUG ("seeking to %" G_GUINT64_FORMAT, offset);
res = gnome_vfs_seek (src->handle, GNOME_VFS_SEEK_START, offset);
if (res != GNOME_VFS_OK)
goto seek_failed;
src->curoffset = offset;
} else {
goto cannot_seek;
}
}
buf = gst_buffer_try_new_and_alloc (size);
if (G_UNLIKELY (buf == NULL)) {
GST_ERROR_OBJECT (src, "Failed to allocate %u bytes", size);
return GST_FLOW_ERROR;
}
data = GST_BUFFER_DATA (buf);
todo = size;
while (todo > 0) {
/* this can return less that we ask for */
res = gnome_vfs_read (src->handle, data, todo, &readbytes);
if (G_UNLIKELY (res == GNOME_VFS_ERROR_EOF || (res == GNOME_VFS_OK
&& readbytes == 0)))
goto eos;
if (G_UNLIKELY (res != GNOME_VFS_OK))
goto read_failed;
if (readbytes < todo) {
data = &data[readbytes];
todo -= readbytes;
} else {
todo = 0;
}
GST_LOG (" got size %" G_GUINT64_FORMAT, readbytes);
}
GST_BUFFER_OFFSET (buf) = src->curoffset;
src->curoffset += size;
/* we're done, return the buffer */
*buffer = buf;
return GST_FLOW_OK;
seek_failed:
{
GST_ELEMENT_ERROR (src, RESOURCE, SEEK, (NULL),
("Failed to seek to requested position %" G_GINT64_FORMAT ": %s",
offset, gnome_vfs_result_to_string (res)));
return GST_FLOW_ERROR;
}
cannot_seek:
{
GST_ELEMENT_ERROR (src, RESOURCE, SEEK, (NULL),
("Requested seek from %" G_GINT64_FORMAT " to %" G_GINT64_FORMAT
" on non-seekable stream", src->curoffset, offset));
return GST_FLOW_ERROR;
}
read_failed:
{
gst_buffer_unref (buf);
GST_ELEMENT_ERROR (src, RESOURCE, READ, (NULL),
("Failed to read data: %s", gnome_vfs_result_to_string (res)));
return GST_FLOW_ERROR;
}
eos:
{
gst_buffer_unref (buf);
GST_DEBUG_OBJECT (src, "Reading data gave EOS");
return GST_FLOW_UNEXPECTED;
}
}