gstreamer/ext/resindvd/resindvdbin.c
Jan Schmidt b769f22404 resindvd: Fix raciness in rsndvdbin when initially creating pads
Protect pad exposure with a preroll lock to avoid situations
where no-more-pads is fired more than once, or fired just before
the last pad is actually added.
2009-05-14 11:28:14 +01:00

903 lines
25 KiB
C

/* GStreamer
* Copyright (C) 2008 Jan Schmidt <thaytan@noraisin.net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <string.h>
#include <gst/gst.h>
#include "resindvdbin.h"
#include "resindvdsrc.h"
#include "rsnstreamselector.h"
#include "rsnaudiomunge.h"
#include "rsnaudiodec.h"
#include "rsnparsetter.h"
#include "gstmpegdemux.h"
GST_DEBUG_CATEGORY_EXTERN (resindvd_debug);
#define GST_CAT_DEFAULT resindvd_debug
#define USE_VIDEOQ 0
#define USE_HARDCODED_VIDEODEC 1
#define USE_HARDCODED_AUDIODEC 1
#define DVDBIN_LOCK(d) g_mutex_lock((d)->dvd_lock)
#define DVDBIN_UNLOCK(d) g_mutex_unlock((d)->dvd_lock)
#define DVDBIN_PREROLL_LOCK(d) g_mutex_lock((d)->preroll_lock)
#define DVDBIN_PREROLL_UNLOCK(d) g_mutex_unlock((d)->preroll_lock)
#define DEFAULT_DEVICE "/dev/dvd"
enum
{
/* FILL ME */
LAST_SIGNAL
};
enum
{
ARG_0,
ARG_DEVICE
};
/* FIXME: Could list specific video and audio caps: */
static GstStaticPadTemplate video_src_template =
GST_STATIC_PAD_TEMPLATE ("video",
GST_PAD_SRC,
GST_PAD_SOMETIMES,
GST_STATIC_CAPS
("video/mpeg, mpegversion=(int) { 1, 2 }, systemstream=false")
);
static GstStaticPadTemplate audio_src_template =
GST_STATIC_PAD_TEMPLATE ("audio",
GST_PAD_SRC,
GST_PAD_SOMETIMES,
GST_STATIC_CAPS ("audio/x-raw-int;audio/x-raw-float")
);
static GstStaticPadTemplate subpicture_src_template =
GST_STATIC_PAD_TEMPLATE ("subpicture",
GST_PAD_SRC,
GST_PAD_SOMETIMES,
GST_STATIC_CAPS ("video/x-dvd-subpicture")
);
static void rsn_dvdbin_do_init (GType rsn_dvdbin_type);
static void rsn_dvdbin_finalize (GObject * object);
static void rsn_dvdbin_uri_handler_init (gpointer g_iface, gpointer iface_data);
GST_BOILERPLATE_FULL (RsnDvdBin, rsn_dvdbin, GstBin,
GST_TYPE_BIN, rsn_dvdbin_do_init);
static void demux_pad_added (GstElement * element, GstPad * pad,
RsnDvdBin * dvdbin);
#if !USE_HARDCODED_VIDEODEC
static void viddec_pad_added (GstElement * element, GstPad * pad,
gboolean last, RsnDvdBin * dvdbin);
#endif
static void rsn_dvdbin_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void rsn_dvdbin_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static GstStateChangeReturn rsn_dvdbin_change_state (GstElement * element,
GstStateChange transition);
static void dvdbin_pad_blocked_cb (GstPad * pad, gboolean blocked,
RsnDvdBin * dvdbin);
static void
rsn_dvdbin_base_init (gpointer gclass)
{
static GstElementDetails element_details = {
"rsndvdbin",
"Generic/Bin/Player",
"DVD playback element",
"Jan Schmidt <thaytan@noraisin.net>"
};
GstElementClass *element_class = GST_ELEMENT_CLASS (gclass);
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&video_src_template));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&audio_src_template));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&subpicture_src_template));
gst_element_class_set_details (element_class, &element_details);
element_class->change_state = GST_DEBUG_FUNCPTR (rsn_dvdbin_change_state);
}
static void
rsn_dvdbin_class_init (RsnDvdBinClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
gobject_class->finalize = rsn_dvdbin_finalize;
gobject_class->set_property = rsn_dvdbin_set_property;
gobject_class->get_property = rsn_dvdbin_get_property;
g_object_class_install_property (gobject_class, ARG_DEVICE,
g_param_spec_string ("device", "Device", "DVD device location",
NULL, G_PARAM_READWRITE));
}
static void
rsn_dvdbin_do_init (GType rsn_dvdbin_type)
{
static const GInterfaceInfo urihandler_info = {
rsn_dvdbin_uri_handler_init,
NULL,
NULL
};
g_type_add_interface_static (rsn_dvdbin_type, GST_TYPE_URI_HANDLER,
&urihandler_info);
}
static void
rsn_dvdbin_init (RsnDvdBin * dvdbin, RsnDvdBinClass * gclass)
{
dvdbin->dvd_lock = g_mutex_new ();
dvdbin->preroll_lock = g_mutex_new ();
}
static void
rsn_dvdbin_finalize (GObject * object)
{
RsnDvdBin *dvdbin = RESINDVDBIN (object);
g_mutex_free (dvdbin->dvd_lock);
g_mutex_free (dvdbin->preroll_lock);
g_free (dvdbin->last_uri);
g_free (dvdbin->device);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
/* URI interface */
static GstURIType
rsn_dvdbin_uri_get_type (void)
{
return GST_URI_SRC;
}
static gchar **
rsn_dvdbin_uri_get_protocols (void)
{
static gchar *protocols[] = { "dvd", NULL };
return protocols;
}
static const gchar *
rsn_dvdbin_uri_get_uri (GstURIHandler * handler)
{
RsnDvdBin *dvdbin = RESINDVDBIN (handler);
DVDBIN_LOCK (dvdbin);
g_free (dvdbin->last_uri);
if (dvdbin->device)
dvdbin->last_uri = g_strdup_printf ("dvd://%s", dvdbin->device);
else
dvdbin->last_uri = g_strdup ("dvd://");
DVDBIN_UNLOCK (dvdbin);
return dvdbin->last_uri;
}
static gboolean
rsn_dvdbin_uri_set_uri (GstURIHandler * handler, const gchar * uri)
{
RsnDvdBin *dvdbin = RESINDVDBIN (handler);
gboolean ret;
gchar *protocol, *location;
protocol = gst_uri_get_protocol (uri);
ret = (protocol && !strcmp (protocol, "dvd")) ? TRUE : FALSE;
g_free (protocol);
protocol = NULL;
if (!ret)
return ret;
location = gst_uri_get_location (uri);
if (!location)
return ret;
/*
* URI structure: dvd:///path/to/device
*/
if (g_str_has_prefix (uri, "dvd://")) {
g_free (dvdbin->device);
if (strlen (uri) > 6)
dvdbin->device = g_strdup (uri + 6);
else
dvdbin->device = g_strdup (DEFAULT_DEVICE);
}
#if 0
/*
* Parse out the new t/c/a and seek to them
*/
{
gchar **strs;
gchar **strcur;
gint pos = 0;
strcur = strs = g_strsplit (location, ",", 0);
while (strcur && *strcur) {
gint val;
if (!sscanf (*strcur, "%d", &val))
break;
switch (pos) {
case 0:
if (val != dvdbin->uri_title) {
dvdbin->uri_title = val;
dvdbin->new_seek = TRUE;
}
break;
case 1:
if (val != dvdbin->uri_chapter) {
dvdbin->uri_chapter = val;
dvdbin->new_seek = TRUE;
}
break;
case 2:
dvdbin->uri_angle = val;
break;
}
strcur++;
pos++;
}
g_strfreev (strs);
}
#endif
g_free (location);
return ret;
}
static void
rsn_dvdbin_uri_handler_init (gpointer g_iface, gpointer iface_data)
{
GstURIHandlerInterface *iface = (GstURIHandlerInterface *) g_iface;
iface->get_type = rsn_dvdbin_uri_get_type;
iface->get_protocols = rsn_dvdbin_uri_get_protocols;
iface->get_uri = rsn_dvdbin_uri_get_uri;
iface->set_uri = rsn_dvdbin_uri_set_uri;
}
static gboolean
try_create_piece (RsnDvdBin * dvdbin, gint index,
const gchar * factory, GType type, const gchar * name, const gchar * descr)
{
GstElement *e;
DVDBIN_LOCK (dvdbin);
if (dvdbin->pieces[index] != NULL) {
DVDBIN_UNLOCK (dvdbin);
return TRUE; /* Already exists */
}
DVDBIN_UNLOCK (dvdbin);
if (factory != NULL) {
e = gst_element_factory_make (factory, name);
} else {
if (name)
e = g_object_new (type, "name", name, NULL);
else
e = g_object_new (type, NULL);
}
if (e == NULL)
goto create_failed;
if (!gst_bin_add (GST_BIN (dvdbin), e))
goto add_failed;
GST_DEBUG_OBJECT (dvdbin, "Added %s element: %" GST_PTR_FORMAT, descr, e);
DVDBIN_LOCK (dvdbin);
dvdbin->pieces[index] = e;
DVDBIN_UNLOCK (dvdbin);
return TRUE;
create_failed:
GST_ELEMENT_ERROR (dvdbin, CORE, MISSING_PLUGIN, (NULL),
("Could not create %s element '%s'", descr, factory));
return FALSE;
add_failed:
gst_object_unref (e);
GST_ELEMENT_ERROR (dvdbin, CORE, FAILED, (NULL),
("Could not add %s element to bin", descr));
return FALSE;
}
static gboolean
create_elements (RsnDvdBin * dvdbin)
{
GstPad *src = NULL;
GstPad *sink = NULL;
if (!try_create_piece (dvdbin, DVD_ELEM_SOURCE, NULL,
RESIN_TYPE_DVDSRC, "dvdsrc", "DVD source")) {
return FALSE;
}
/* FIXME: Locking */
if (dvdbin->device) {
g_object_set (G_OBJECT (dvdbin->pieces[DVD_ELEM_SOURCE]),
"device", dvdbin->device, NULL);
}
if (!try_create_piece (dvdbin, DVD_ELEM_DEMUX,
NULL, GST_TYPE_FLUPS_DEMUX, "dvddemux", "DVD demuxer"))
return FALSE;
if (gst_element_link (dvdbin->pieces[DVD_ELEM_SOURCE],
dvdbin->pieces[DVD_ELEM_DEMUX]) == FALSE)
goto failed_connect;
/* Listen for new pads from the demuxer */
g_signal_connect (G_OBJECT (dvdbin->pieces[DVD_ELEM_DEMUX]), "pad-added",
G_CALLBACK (demux_pad_added), dvdbin);
if (!try_create_piece (dvdbin, DVD_ELEM_MQUEUE, "multiqueue", 0, "mq",
"multiqueue"))
return FALSE;
g_object_set (dvdbin->pieces[DVD_ELEM_MQUEUE],
"max-size-time", (7 * GST_SECOND / 10), "max-size-bytes", 0,
"max-size-buffers", 0, NULL);
#if USE_HARDCODED_VIDEODEC
if (!try_create_piece (dvdbin, DVD_ELEM_VIDDEC, "mpeg2dec", 0, "viddec",
"video decoder"))
return FALSE;
#else
/* Decodebin will throw a missing element message to find an MPEG decoder */
if (!try_create_piece (dvdbin, DVD_ELEM_VIDDEC, "decodebin2", 0, "viddec",
"video decoder"))
return FALSE;
g_signal_connect (G_OBJECT (dvdbin->pieces[DVD_ELEM_VIDDEC]),
"new-decoded-pad", G_CALLBACK (viddec_pad_added), dvdbin);
#endif
if (!try_create_piece (dvdbin, DVD_ELEM_PARSET, NULL, RSN_TYPE_RSNPARSETTER,
"rsnparsetter", "Aspect ratio adjustment"))
return FALSE;
#if USE_HARDCODED_VIDEODEC
src = gst_element_get_static_pad (dvdbin->pieces[DVD_ELEM_VIDDEC], "src");
sink = gst_element_get_static_pad (dvdbin->pieces[DVD_ELEM_PARSET], "sink");
if (src == NULL || sink == NULL)
goto failed_viddec_connect;
if (GST_PAD_LINK_FAILED (gst_pad_link (src, sink)))
goto failed_viddec_connect;
gst_object_unref (src);
gst_object_unref (sink);
src = sink = NULL;
#endif
#if USE_VIDEOQ
/* Add a small amount of queueing after the video decoder. */
if (!try_create_piece (dvdbin, DVD_ELEM_VIDQ, "queue", 0, "vid_q",
"video decoder buffer"))
return FALSE;
g_object_set (dvdbin->pieces[DVD_ELEM_VIDQ],
"max-size-time", G_GUINT64_CONSTANT (0), "max-size-bytes", 0,
"max-size-buffers", 3, NULL);
src = gst_element_get_static_pad (dvdbin->pieces[DVD_ELEM_PARSET], "src");
sink = gst_element_get_static_pad (dvdbin->pieces[DVD_ELEM_VIDQ], "sink");
if (src == NULL || sink == NULL)
goto failed_vidq_connect;
if (GST_PAD_LINK_FAILED (gst_pad_link (src, sink)))
goto failed_vidq_connect;
gst_object_unref (src);
gst_object_unref (sink);
src = sink = NULL;
src = gst_element_get_static_pad (dvdbin->pieces[DVD_ELEM_VIDQ], "src");
#else
src = gst_element_get_static_pad (dvdbin->pieces[DVD_ELEM_PARSET], "src");
#endif
if (src == NULL)
goto failed_video_ghost;
dvdbin->video_pad = gst_ghost_pad_new ("video", src);
if (dvdbin->video_pad == NULL)
goto failed_video_ghost;
gst_object_unref (src);
src = NULL;
gst_pad_set_active (dvdbin->video_pad, TRUE);
gst_pad_set_blocked_async (dvdbin->video_pad, TRUE,
(GstPadBlockCallback) dvdbin_pad_blocked_cb, dvdbin);
#if USE_HARDCODED_VIDEODEC
gst_element_add_pad (GST_ELEMENT (dvdbin), dvdbin->video_pad);
dvdbin->video_added = TRUE;
#endif
if (!try_create_piece (dvdbin, DVD_ELEM_SPU_SELECT, NULL,
RSN_TYPE_STREAM_SELECTOR, "subpselect", "Subpicture stream selector"))
return FALSE;
/* Add a single standalone queue to hold a single buffer of SPU data */
if (!try_create_piece (dvdbin, DVD_ELEM_SPUQ, "queue", 0, "spu_q",
"subpicture decoder buffer"))
return FALSE;
g_object_set (dvdbin->pieces[DVD_ELEM_SPUQ],
"max-size-time", G_GUINT64_CONSTANT (0), "max-size-bytes", 0,
"max-size-buffers", 1, NULL);
src = gst_element_get_static_pad (dvdbin->pieces[DVD_ELEM_SPU_SELECT], "src");
sink = gst_element_get_static_pad (dvdbin->pieces[DVD_ELEM_SPUQ], "sink");
if (src == NULL || sink == NULL)
goto failed_spuq_connect;
if (GST_PAD_LINK_FAILED (gst_pad_link (src, sink)))
goto failed_spuq_connect;
gst_object_unref (src);
gst_object_unref (sink);
src = sink = NULL;
src = gst_element_get_static_pad (dvdbin->pieces[DVD_ELEM_SPUQ], "src");
if (src == NULL)
goto failed_spu_ghost;
dvdbin->subpicture_pad = gst_ghost_pad_new ("subpicture", src);
if (dvdbin->subpicture_pad == NULL)
goto failed_spu_ghost;
gst_pad_set_active (dvdbin->subpicture_pad, TRUE);
gst_pad_set_blocked_async (dvdbin->subpicture_pad, TRUE,
(GstPadBlockCallback) dvdbin_pad_blocked_cb, dvdbin);
gst_object_unref (src);
src = NULL;
if (!try_create_piece (dvdbin, DVD_ELEM_AUD_SELECT, NULL,
RSN_TYPE_STREAM_SELECTOR, "audioselect", "Audio stream selector"))
return FALSE;
#if USE_HARDCODED_AUDIODEC
if (!try_create_piece (dvdbin, DVD_ELEM_AUDDEC, "a52dec", 0,
"auddec", "audio decoder"))
return FALSE;
#else
if (!try_create_piece (dvdbin, DVD_ELEM_AUDDEC, NULL,
RSN_TYPE_AUDIODEC, "auddec", "audio decoder"))
return FALSE;
#endif
/* rsnaudiomunge goes after the audio decoding to regulate the stream */
if (!try_create_piece (dvdbin, DVD_ELEM_AUD_MUNGE, NULL,
RSN_TYPE_AUDIOMUNGE, "audiomunge", "Audio output filter"))
return FALSE;
src = gst_element_get_static_pad (dvdbin->pieces[DVD_ELEM_AUDDEC], "src");
sink =
gst_element_get_static_pad (dvdbin->pieces[DVD_ELEM_AUD_MUNGE], "sink");
if (src == NULL || sink == NULL)
goto failed_aud_connect;
if (GST_PAD_LINK_FAILED (gst_pad_link (src, sink)))
goto failed_aud_connect;
gst_object_unref (sink);
gst_object_unref (src);
src = sink = NULL;
src = gst_element_get_static_pad (dvdbin->pieces[DVD_ELEM_AUD_SELECT], "src");
sink = gst_element_get_static_pad (dvdbin->pieces[DVD_ELEM_AUDDEC], "sink");
if (src == NULL || sink == NULL)
goto failed_aud_connect;
if (GST_PAD_LINK_FAILED (gst_pad_link (src, sink)))
goto failed_aud_connect;
gst_object_unref (sink);
gst_object_unref (src);
src = sink = NULL;
/* ghost audio munge output pad onto bin */
src = gst_element_get_static_pad (dvdbin->pieces[DVD_ELEM_AUD_MUNGE], "src");
if (src == NULL)
goto failed_aud_ghost;
dvdbin->audio_pad = gst_ghost_pad_new ("audio", src);
if (dvdbin->audio_pad == NULL)
goto failed_aud_ghost;
gst_pad_set_active (dvdbin->audio_pad, TRUE);
gst_pad_set_blocked_async (dvdbin->audio_pad, TRUE,
(GstPadBlockCallback) dvdbin_pad_blocked_cb, dvdbin);
gst_object_unref (src);
src = NULL;
if (dvdbin->video_added && dvdbin->audio_added && dvdbin->subpicture_added) {
GST_DEBUG_OBJECT (dvdbin, "Firing no more pads");
gst_element_no_more_pads (GST_ELEMENT (dvdbin));
}
return TRUE;
failed_connect:
GST_ELEMENT_ERROR (dvdbin, CORE, FAILED, (NULL),
("Could not connect DVD source and demuxer elements"));
goto error_out;
#if USE_HARDCODED_VIDEODEC
failed_viddec_connect:
GST_ELEMENT_ERROR (dvdbin, CORE, FAILED, (NULL),
("Could not connect DVD video decoder and aspect ratio adjuster"));
goto error_out;
#endif
#if USE_VIDEOQ
failed_vidq_connect:
GST_ELEMENT_ERROR (dvdbin, CORE, FAILED, (NULL),
("Could not connect DVD aspect ratio adjuster and video buffer elements"));
goto error_out;
#endif
failed_video_ghost:
GST_ELEMENT_ERROR (dvdbin, CORE, FAILED, (NULL),
("Could not ghost SPU output pad"));
goto error_out;
failed_spuq_connect:
GST_ELEMENT_ERROR (dvdbin, CORE, FAILED, (NULL),
("Could not connect DVD subpicture selector and buffer elements"));
goto error_out;
failed_spu_ghost:
GST_ELEMENT_ERROR (dvdbin, CORE, FAILED, (NULL),
("Could not ghost SPU output pad"));
goto error_out;
failed_aud_connect:
GST_ELEMENT_ERROR (dvdbin, CORE, FAILED, (NULL),
("Could not connect DVD audio decoder"));
goto error_out;
failed_aud_ghost:
GST_ELEMENT_ERROR (dvdbin, CORE, FAILED, (NULL),
("Could not ghost audio output pad"));
goto error_out;
error_out:
if (src != NULL)
gst_object_unref (src);
if (sink != NULL)
gst_object_unref (sink);
return FALSE;
}
static void
remove_elements (RsnDvdBin * dvdbin)
{
gint i;
GList *tmp;
if (dvdbin->pieces[DVD_ELEM_MQUEUE] != NULL) {
for (tmp = dvdbin->mq_req_pads; tmp; tmp = g_list_next (tmp)) {
gst_element_release_request_pad (dvdbin->pieces[DVD_ELEM_MQUEUE],
GST_PAD (tmp->data));
}
}
g_list_free (dvdbin->mq_req_pads);
dvdbin->mq_req_pads = NULL;
for (i = 0; i < DVD_ELEM_LAST; i++) {
DVDBIN_LOCK (dvdbin);
if (dvdbin->pieces[i] != NULL) {
GstElement *piece = dvdbin->pieces[i];
dvdbin->pieces[i] = NULL;
DVDBIN_UNLOCK (dvdbin);
gst_element_set_state (piece, GST_STATE_NULL);
gst_bin_remove (GST_BIN (dvdbin), piece);
} else
DVDBIN_UNLOCK (dvdbin);
}
if (dvdbin->video_pad) {
if (dvdbin->video_added)
gst_element_remove_pad (GST_ELEMENT (dvdbin), dvdbin->video_pad);
else
gst_object_unref (dvdbin->video_pad);
}
if (dvdbin->audio_pad) {
if (dvdbin->audio_added)
gst_element_remove_pad (GST_ELEMENT (dvdbin), dvdbin->audio_pad);
else
gst_object_unref (dvdbin->audio_pad);
}
if (dvdbin->subpicture_pad) {
if (dvdbin->subpicture_added)
gst_element_remove_pad (GST_ELEMENT (dvdbin), dvdbin->subpicture_pad);
else
gst_object_unref (dvdbin->subpicture_pad);
}
dvdbin->video_added = dvdbin->audio_added = dvdbin->subpicture_added = FALSE;
dvdbin->video_pad = dvdbin->audio_pad = dvdbin->subpicture_pad = NULL;
}
static GstPad *
connect_thru_mq (RsnDvdBin * dvdbin, GstPad * pad)
{
GstPad *mq_sink;
GstPad *mq_src;
gchar *tmp, *sinkname, *srcname;
/* Request a pad from multiqueue, then connect this one, then
* discover the corresponding output pad and return it */
mq_sink = gst_element_get_request_pad (dvdbin->pieces[DVD_ELEM_MQUEUE],
"sink%d");
if (mq_sink == NULL)
return FALSE;
dvdbin->mq_req_pads = g_list_prepend (dvdbin->mq_req_pads, mq_sink);
if (gst_pad_link (pad, mq_sink) != GST_PAD_LINK_OK)
return FALSE;
sinkname = gst_pad_get_name (mq_sink);
tmp = sinkname + 4;
srcname = g_strdup_printf ("src%s", tmp);
mq_src = gst_element_get_static_pad (dvdbin->pieces[DVD_ELEM_MQUEUE],
srcname);
g_free (sinkname);
g_free (srcname);
return mq_src;
}
static void
demux_pad_added (GstElement * element, GstPad * pad, RsnDvdBin * dvdbin)
{
gboolean skip_mq = FALSE;
GstPad *mq_pad = NULL;
GstPad *dest_pad = NULL;
GstCaps *caps;
GstStructure *s;
GST_DEBUG_OBJECT (dvdbin, "New pad: %" GST_PTR_FORMAT, pad);
caps = gst_pad_get_caps (pad);
if (caps == NULL) {
GST_WARNING_OBJECT (dvdbin, "NULL caps from pad %" GST_PTR_FORMAT, pad);
return;
}
if (!gst_caps_is_fixed (caps)) {
GST_WARNING_OBJECT (dvdbin, "Unfixed caps %" GST_PTR_FORMAT
" on pad %" GST_PTR_FORMAT, caps, pad);
gst_caps_unref (caps);
return;
}
s = gst_caps_get_structure (caps, 0);
g_return_if_fail (s != NULL);
if (g_str_equal (gst_structure_get_name (s), "video/mpeg")) {
dest_pad =
gst_element_get_static_pad (dvdbin->pieces[DVD_ELEM_VIDDEC], "sink");
} else if (g_str_equal (gst_structure_get_name (s), "video/x-dvd-subpicture")) {
dest_pad =
gst_element_get_request_pad (dvdbin->pieces[DVD_ELEM_SPU_SELECT],
"sink%d");
skip_mq = TRUE;
} else if (g_str_equal (gst_structure_get_name (s), "audio/x-private1-ac3")) {
dest_pad =
gst_element_get_request_pad (dvdbin->pieces[DVD_ELEM_AUD_SELECT],
"sink%d");
}
gst_caps_unref (caps);
if (dest_pad == NULL) {
GST_DEBUG_OBJECT (dvdbin, "Don't know how to handle pad. Ignoring");
return;
}
if (skip_mq) {
mq_pad = gst_object_ref (pad);
} else {
mq_pad = connect_thru_mq (dvdbin, pad);
if (mq_pad == NULL)
goto failed;
GST_DEBUG_OBJECT (dvdbin, "Linking new pad %" GST_PTR_FORMAT
" through multiqueue to %" GST_PTR_FORMAT, pad, dest_pad);
}
gst_pad_link (mq_pad, dest_pad);
gst_object_unref (mq_pad);
gst_object_unref (dest_pad);
return;
failed:
GST_ELEMENT_ERROR (dvdbin, CORE, FAILED, (NULL),
("Failed to handle new demuxer pad %s", GST_PAD_NAME (pad)));
if (mq_pad)
gst_object_unref (mq_pad);
if (dest_pad)
gst_object_unref (dest_pad);
return;
}
static void
dvdbin_pad_blocked_cb (GstPad * pad, gboolean blocked, RsnDvdBin * dvdbin)
{
gboolean added_last_pad = FALSE;
gboolean added = FALSE;
if (!blocked)
return;
if (pad == dvdbin->subpicture_pad) {
GST_DEBUG_OBJECT (dvdbin, "Pad block -> subpicture pad");
DVDBIN_PREROLL_LOCK (dvdbin);
added = dvdbin->subpicture_added;
dvdbin->subpicture_added = TRUE;
if (!added) {
gst_element_add_pad (GST_ELEMENT (dvdbin), dvdbin->subpicture_pad);
added_last_pad = (dvdbin->audio_added && dvdbin->video_added);
}
DVDBIN_PREROLL_UNLOCK (dvdbin);
gst_pad_set_blocked_async (pad, FALSE,
(GstPadBlockCallback) dvdbin_pad_blocked_cb, dvdbin);
} else if (pad == dvdbin->audio_pad) {
GST_DEBUG_OBJECT (dvdbin, "Pad block -> audio pad");
DVDBIN_PREROLL_LOCK (dvdbin);
added = dvdbin->audio_added;
dvdbin->audio_added = TRUE;
if (!added) {
gst_element_add_pad (GST_ELEMENT (dvdbin), dvdbin->audio_pad);
added_last_pad = (dvdbin->subpicture_added && dvdbin->video_added);
}
DVDBIN_PREROLL_UNLOCK (dvdbin);
gst_pad_set_blocked_async (pad, FALSE,
(GstPadBlockCallback) dvdbin_pad_blocked_cb, dvdbin);
} else if (pad == dvdbin->video_pad) {
GST_DEBUG_OBJECT (dvdbin, "Pad block -> video pad");
DVDBIN_PREROLL_LOCK (dvdbin);
added = dvdbin->video_added;
dvdbin->video_added = TRUE;
if (!added) {
gst_element_add_pad (GST_ELEMENT (dvdbin), dvdbin->video_pad);
added_last_pad = (dvdbin->subpicture_added && dvdbin->audio_added);
}
DVDBIN_PREROLL_UNLOCK (dvdbin);
gst_pad_set_blocked_async (pad, FALSE,
(GstPadBlockCallback) dvdbin_pad_blocked_cb, dvdbin);
}
if (added_last_pad) {
GST_DEBUG_OBJECT (dvdbin, "Firing no more pads from pad-blocked cb");
gst_element_no_more_pads (GST_ELEMENT (dvdbin));
}
}
#if !USE_HARDCODED_VIDEODEC
static void
viddec_pad_added (GstElement * element, GstPad * pad, gboolean last,
RsnDvdBin * dvdbin)
{
GstPad *q_pad;
GST_DEBUG_OBJECT (dvdbin, "New video pad: %" GST_PTR_FORMAT, pad);
q_pad = gst_element_get_static_pad (dvdbin->pieces[DVD_ELEM_PARSET], "sink");
gst_pad_link (pad, q_pad);
gst_object_unref (q_pad);
}
#endif
static void
rsn_dvdbin_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
RsnDvdBin *dvdbin = RESINDVDBIN (object);
switch (prop_id) {
case ARG_DEVICE:
DVDBIN_LOCK (dvdbin);
g_free (dvdbin->device);
if (g_value_get_string (value) == NULL)
dvdbin->device = g_strdup (DEFAULT_DEVICE);
else
dvdbin->device = g_value_dup_string (value);
if (dvdbin->pieces[DVD_ELEM_SOURCE]) {
g_object_set_property (G_OBJECT (dvdbin->pieces[DVD_ELEM_SOURCE]),
"device", value);
}
DVDBIN_UNLOCK (dvdbin);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
rsn_dvdbin_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
RsnDvdBin *dvdbin = RESINDVDBIN (object);
switch (prop_id) {
case ARG_DEVICE:
DVDBIN_LOCK (dvdbin);
if (dvdbin->device)
g_value_set_string (value, dvdbin->device);
else if (dvdbin->pieces[DVD_ELEM_SOURCE])
g_object_get_property (G_OBJECT (dvdbin->pieces[DVD_ELEM_SOURCE]),
"device", value);
else
g_value_set_string (value, DEFAULT_DEVICE);
DVDBIN_UNLOCK (dvdbin);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GstStateChangeReturn
rsn_dvdbin_change_state (GstElement * element, GstStateChange transition)
{
GstStateChangeReturn ret;
RsnDvdBin *dvdbin = RESINDVDBIN (element);
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
if (!create_elements (dvdbin)) {
remove_elements (dvdbin);
return GST_STATE_CHANGE_FAILURE;
}
break;
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
if (ret == GST_STATE_CHANGE_FAILURE)
return ret;
switch (transition) {
case GST_STATE_CHANGE_PAUSED_TO_READY:
case GST_STATE_CHANGE_READY_TO_NULL:
remove_elements (dvdbin);
break;
default:
break;
}
return ret;
}