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gstreamer/gst/playback/gsturidecodebin.c
Wim Taymans 777f8ab1bf playbin2: fix raw elements like cdda:// 
Fix a fixme with a one liner and make cd playback work again.
2009-03-12 18:27:25 +01:00

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/* GStreamer
* Copyright (C) <2007> Wim Taymans <wim.taymans@gmail.com>
*
* 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.
*/
/**
* SECTION:element-uridecodebin
*
* Decodes data from a URI into raw media.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <string.h>
#include <gst/gst.h>
#include <gst/gst-i18n-plugin.h>
#include "gstfactorylists.h"
#include "gstplay-marshal.h"
#include "gstplay-enum.h"
#define GST_TYPE_URI_DECODE_BIN \
(gst_uri_decode_bin_get_type())
#define GST_URI_DECODE_BIN(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_URI_DECODE_BIN,GstURIDecodeBin))
#define GST_URI_DECODE_BIN_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_URI_DECODE_BIN,GstURIDecodeBinClass))
#define GST_IS_URI_DECODE_BIN(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_URI_DECODE_BIN))
#define GST_IS_URI_DECODE_BIN_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_URI_DECODE_BIN))
#define GST_URI_DECODE_BIN_CAST(obj) ((GstURIDecodeBin *) (obj))
typedef struct _GstURIDecodeBin GstURIDecodeBin;
typedef struct _GstURIDecodeBinClass GstURIDecodeBinClass;
#define GST_URI_DECODE_BIN_GET_LOCK(dec) (((GstURIDecodeBin*)(dec))->lock)
#define GST_URI_DECODE_BIN_LOCK(dec) (g_mutex_lock(GST_URI_DECODE_BIN_GET_LOCK(dec)))
#define GST_URI_DECODE_BIN_UNLOCK(dec) (g_mutex_unlock(GST_URI_DECODE_BIN_GET_LOCK(dec)))
/**
* GstURIDecodeBin
*
* uridecodebin element struct
*/
struct _GstURIDecodeBin
{
GstBin parent_instance;
GMutex *lock; /* lock for constructing */
GValueArray *factories; /* factories we can use for selecting elements */
gchar *uri;
guint connection_speed;
GstCaps *caps;
gchar *encoding;
gboolean is_stream;
guint64 buffer_duration; /* When streaming, buffer duration (ns) */
guint buffer_size; /* When streaming, buffer size (bytes) */
GstElement *source;
GstElement *typefind;
guint have_type_id; /* have-type signal id from typefind */
GSList *decodebins;
GSList *srcpads;
gint numpads;
/* for dynamic sources */
guint src_np_sig_id; /* new-pad signal id */
guint src_nmp_sig_id; /* no-more-pads signal id */
gint pending;
gboolean async_pending; /* async-start has been emited */
};
struct _GstURIDecodeBinClass
{
GstBinClass parent_class;
/* signal fired when we found a pad that we cannot decode */
void (*unknown_type) (GstElement * element, GstPad * pad, GstCaps * caps);
/* signal fired to know if we continue trying to decode the given caps */
gboolean (*autoplug_continue) (GstElement * element, GstPad * pad,
GstCaps * caps);
/* signal fired to get a list of factories to try to autoplug */
GValueArray *(*autoplug_factories) (GstElement * element, GstPad * pad,
GstCaps * caps);
/* signal fired to select from the proposed list of factories */
GstAutoplugSelectResult (*autoplug_select) (GstElement * element,
GstPad * pad, GstCaps * caps, GValueArray * factories);
/* emited when all data is decoded */
void (*drained) (GstElement * element);
};
static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src%d",
GST_PAD_SRC,
GST_PAD_SOMETIMES,
GST_STATIC_CAPS_ANY);
GST_DEBUG_CATEGORY_STATIC (gst_uri_decode_bin_debug);
#define GST_CAT_DEFAULT gst_uri_decode_bin_debug
static const GstElementDetails gst_uri_decode_bin_details =
GST_ELEMENT_DETAILS ("URI Decoder",
"Generic/Bin/Decoder",
"Autoplug and decode an URI to raw media",
"Wim Taymans <wim.taymans@gmail.com>");
/* signals */
enum
{
SIGNAL_UNKNOWN_TYPE,
SIGNAL_AUTOPLUG_CONTINUE,
SIGNAL_AUTOPLUG_FACTORIES,
SIGNAL_AUTOPLUG_SELECT,
SIGNAL_DRAINED,
LAST_SIGNAL
};
/* properties */
#define DEFAULT_PROP_URI NULL
#define DEFAULT_PROP_SOURCE NULL
#define DEFAULT_CONNECTION_SPEED 0
#define DEFAULT_CAPS NULL
#define DEFAULT_SUBTITLE_ENCODING NULL
#define DEFAULT_BUFFER_DURATION -1
#define DEFAULT_BUFFER_SIZE -1
enum
{
PROP_0,
PROP_URI,
PROP_SOURCE,
PROP_CONNECTION_SPEED,
PROP_CAPS,
PROP_SUBTITLE_ENCODING,
PROP_BUFFER_SIZE,
PROP_BUFFER_DURATION,
PROP_LAST
};
static guint gst_uri_decode_bin_signals[LAST_SIGNAL] = { 0 };
GST_BOILERPLATE (GstURIDecodeBin, gst_uri_decode_bin, GstBin, GST_TYPE_BIN);
static void gst_uri_decode_bin_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_uri_decode_bin_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static void gst_uri_decode_bin_finalize (GObject * obj);
static void handle_message (GstBin * bin, GstMessage * msg);
static gboolean gst_uri_decode_bin_query (GstElement * element,
GstQuery * query);
static GstStateChangeReturn gst_uri_decode_bin_change_state (GstElement *
element, GstStateChange transition);
static void
gst_uri_decode_bin_base_init (gpointer g_class)
{
GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class);
gst_element_class_add_pad_template (gstelement_class,
gst_static_pad_template_get (&srctemplate));
gst_element_class_set_details (gstelement_class, &gst_uri_decode_bin_details);
}
static gboolean
_gst_boolean_accumulator (GSignalInvocationHint * ihint,
GValue * return_accu, const GValue * handler_return, gpointer dummy)
{
gboolean myboolean;
myboolean = g_value_get_boolean (handler_return);
if (!(ihint->run_type & G_SIGNAL_RUN_CLEANUP))
g_value_set_boolean (return_accu, myboolean);
/* stop emission if FALSE */
return myboolean;
}
static gboolean
_gst_array_accumulator (GSignalInvocationHint * ihint,
GValue * return_accu, const GValue * handler_return, gpointer dummy)
{
gpointer array;
array = g_value_get_boxed (handler_return);
if (!(ihint->run_type & G_SIGNAL_RUN_CLEANUP))
g_value_set_boxed (return_accu, array);
return FALSE;
}
static gboolean
_gst_select_accumulator (GSignalInvocationHint * ihint,
GValue * return_accu, const GValue * handler_return, gpointer dummy)
{
GstAutoplugSelectResult res;
res = g_value_get_enum (handler_return);
if (!(ihint->run_type & G_SIGNAL_RUN_CLEANUP))
g_value_set_enum (return_accu, res);
return FALSE;
}
static gboolean
gst_uri_decode_bin_autoplug_continue (GstElement * element, GstPad * pad,
GstCaps * caps)
{
/* by default we always continue */
return TRUE;
}
static GValueArray *
gst_uri_decode_bin_autoplug_factories (GstElement * element, GstPad * pad,
GstCaps * caps)
{
GValueArray *result;
GST_DEBUG_OBJECT (element, "finding factories");
/* return all compatible factories for caps */
result =
gst_factory_list_filter (GST_URI_DECODE_BIN_CAST (element)->factories,
caps);
GST_DEBUG_OBJECT (element, "autoplug-factories returns %p", result);
return result;
}
static void
gst_uri_decode_bin_class_init (GstURIDecodeBinClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
GstBinClass *gstbin_class;
gobject_class = G_OBJECT_CLASS (klass);
gstelement_class = GST_ELEMENT_CLASS (klass);
gstbin_class = GST_BIN_CLASS (klass);
gobject_class->set_property = gst_uri_decode_bin_set_property;
gobject_class->get_property = gst_uri_decode_bin_get_property;
gobject_class->finalize = gst_uri_decode_bin_finalize;
g_object_class_install_property (gobject_class, PROP_URI,
g_param_spec_string ("uri", "URI", "URI to decode",
DEFAULT_PROP_URI, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_SOURCE,
g_param_spec_object ("source", "Source", "Source object used",
GST_TYPE_ELEMENT, G_PARAM_READABLE));
g_object_class_install_property (gobject_class, PROP_CONNECTION_SPEED,
g_param_spec_uint ("connection-speed", "Connection Speed",
"Network connection speed in kbps (0 = unknown)",
0, G_MAXUINT, DEFAULT_CONNECTION_SPEED,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_CAPS,
g_param_spec_boxed ("caps", "Caps",
"The caps on which to stop decoding. (NULL = default)",
GST_TYPE_CAPS, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_SUBTITLE_ENCODING,
g_param_spec_string ("subtitle-encoding", "subtitle encoding",
"Encoding to assume if input subtitles are not in UTF-8 encoding. "
"If not set, the GST_SUBTITLE_ENCODING environment variable will "
"be checked for an encoding to use. If that is not set either, "
"ISO-8859-15 will be assumed.", NULL,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_BUFFER_SIZE,
g_param_spec_int ("buffer-size", "Buffer size (bytes)",
"Buffer size when buffering network streams",
-1, G_MAXINT, DEFAULT_BUFFER_SIZE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_BUFFER_DURATION,
g_param_spec_int64 ("buffer-duration", "Buffer duration (ns)",
"Buffer duration when buffering network streams",
-1, G_MAXINT64, DEFAULT_BUFFER_DURATION,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/**
* GstURIDecodeBin::unknown-type:
* @bin: The uridecodebin
* @pad: the new pad containing caps that cannot be resolved to a 'final'
* stream type.
* @caps: the #GstCaps of the pad that cannot be resolved.
*
* This signal is emitted when a pad for which there is no further possible
* decoding is added to the uridecodebin.
*/
gst_uri_decode_bin_signals[SIGNAL_UNKNOWN_TYPE] =
g_signal_new ("unknown-type", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstURIDecodeBinClass, unknown_type),
NULL, NULL, gst_marshal_VOID__OBJECT_BOXED, G_TYPE_NONE, 2,
GST_TYPE_PAD, GST_TYPE_CAPS);
/**
* GstURIDecodeBin::autoplug-continue:
* @bin: The uridecodebin
* @pad: The #GstPad.
* @caps: The #GstCaps found.
*
* This signal is emitted whenever uridecodebin finds a new stream. It is
* emitted before looking for any elements that can handle that stream.
*
* Returns: #TRUE if you wish uridecodebin to look for elements that can
* handle the given @caps. If #FALSE, those caps will be considered as
* final and the pad will be exposed as such (see 'new-decoded-pad'
* signal).
*/
gst_uri_decode_bin_signals[SIGNAL_AUTOPLUG_CONTINUE] =
g_signal_new ("autoplug-continue", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstURIDecodeBinClass,
autoplug_continue), _gst_boolean_accumulator, NULL,
gst_play_marshal_BOOLEAN__OBJECT_BOXED, G_TYPE_BOOLEAN, 2, GST_TYPE_PAD,
GST_TYPE_CAPS);
/**
* GstURIDecodeBin::autoplug-factories:
* @bin: The decodebin
* @pad: The #GstPad.
* @caps: The #GstCaps found.
*
* This function is emited when an array of possible factories for @caps on
* @pad is needed. Uridecodebin will by default return an array with all
* compatible factories, sorted by rank.
*
* If this function returns NULL, @pad will be exposed as a final caps.
*
* If this function returns an empty array, the pad will be considered as
* having an unhandled type media type.
*
* Returns: a #GValueArray* with a list of factories to try. The factories are
* by default tried in the returned order or based on the index returned by
* "autoplug-select".
*/
gst_uri_decode_bin_signals[SIGNAL_AUTOPLUG_FACTORIES] =
g_signal_new ("autoplug-factories", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstURIDecodeBinClass,
autoplug_factories), _gst_array_accumulator, NULL,
gst_play_marshal_BOXED__OBJECT_BOXED, G_TYPE_VALUE_ARRAY, 2,
GST_TYPE_PAD, GST_TYPE_CAPS);
/**
* GstURIDecodeBin::autoplug-select:
* @pad: The #GstPad.
* @caps: The #GstCaps.
* @factory: A #GstElementFactory to use
*
* This signal is emitted once uridecodebin has found all the possible
* #GstElementFactory that can be used to handle the given @caps. For each of
* those factories, this signal is emited.
*
* The signal handler should return a #GST_TYPE_AUTOPLUG_SELECT_RESULT enum
* value indicating what decodebin2 should do next.
*
* A value of #GST_AUTOPLUG_SELECT_TRY will try to autoplug an element from
* @factory.
*
* A value of #GST_AUTOPLUG_SELECT_EXPOSE will expose @pad without plugging
* any element to it.
*
* A value of #GST_AUTOPLUG_SELECT_SKIP will skip @factory and move to the
* next factory.
*
* Returns: a #GST_TYPE_AUTOPLUG_SELECT_RESULT that indicates the required
* operation. The default handler will always return
* #GST_AUTOPLUG_SELECT_TRY.
*/
gst_uri_decode_bin_signals[SIGNAL_AUTOPLUG_SELECT] =
g_signal_new ("autoplug-select", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstURIDecodeBinClass,
autoplug_select), _gst_select_accumulator, NULL,
gst_play_marshal_ENUM__OBJECT_BOXED_OBJECT,
GST_TYPE_AUTOPLUG_SELECT_RESULT, 3, GST_TYPE_PAD, GST_TYPE_CAPS,
GST_TYPE_ELEMENT_FACTORY);
/**
* GstURIDecodeBin::drained:
*
* This signal is emitted when the data for the current uri is played.
*/
gst_uri_decode_bin_signals[SIGNAL_DRAINED] =
g_signal_new ("drained", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GstURIDecodeBinClass, drained), NULL, NULL,
gst_marshal_VOID__VOID, G_TYPE_NONE, 0, G_TYPE_NONE);
gstelement_class->query = GST_DEBUG_FUNCPTR (gst_uri_decode_bin_query);
gstelement_class->change_state =
GST_DEBUG_FUNCPTR (gst_uri_decode_bin_change_state);
gstbin_class->handle_message = GST_DEBUG_FUNCPTR (handle_message);
klass->autoplug_continue =
GST_DEBUG_FUNCPTR (gst_uri_decode_bin_autoplug_continue);
klass->autoplug_factories =
GST_DEBUG_FUNCPTR (gst_uri_decode_bin_autoplug_factories);
}
static void
gst_uri_decode_bin_init (GstURIDecodeBin * dec, GstURIDecodeBinClass * klass)
{
/* first filter out the interesting element factories */
dec->factories = gst_factory_list_get_elements (GST_FACTORY_LIST_DECODER);
dec->lock = g_mutex_new ();
dec->uri = g_strdup (DEFAULT_PROP_URI);
dec->connection_speed = DEFAULT_CONNECTION_SPEED;
dec->caps = DEFAULT_CAPS;
dec->encoding = g_strdup (DEFAULT_SUBTITLE_ENCODING);
dec->buffer_duration = DEFAULT_BUFFER_DURATION;
dec->buffer_size = DEFAULT_BUFFER_SIZE;
}
static void
gst_uri_decode_bin_finalize (GObject * obj)
{
GstURIDecodeBin *dec = GST_URI_DECODE_BIN (obj);
g_mutex_free (dec->lock);
g_free (dec->uri);
g_free (dec->encoding);
if (dec->factories) {
g_value_array_free (dec->factories);
dec->factories = NULL;
}
G_OBJECT_CLASS (parent_class)->finalize (obj);
}
static void
gst_uri_decode_bin_set_encoding (GstURIDecodeBin * dec, const gchar * encoding)
{
GSList *walk;
GST_URI_DECODE_BIN_LOCK (dec);
/* set property first */
GST_OBJECT_LOCK (dec);
g_free (dec->encoding);
dec->encoding = g_strdup (encoding);
GST_OBJECT_UNLOCK (dec);
/* set the property on all decodebins now */
for (walk = dec->decodebins; walk; walk = g_slist_next (walk)) {
GObject *decodebin = G_OBJECT (walk->data);
g_object_set (decodebin, "subtitle-encoding", encoding, NULL);
}
GST_URI_DECODE_BIN_UNLOCK (dec);
}
static void
gst_uri_decode_bin_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstURIDecodeBin *dec = GST_URI_DECODE_BIN (object);
switch (prop_id) {
case PROP_URI:
GST_OBJECT_LOCK (dec);
g_free (dec->uri);
dec->uri = g_value_dup_string (value);
GST_OBJECT_UNLOCK (dec);
break;
case PROP_CONNECTION_SPEED:
GST_OBJECT_LOCK (dec);
dec->connection_speed = g_value_get_uint (value) * 1000;
GST_OBJECT_UNLOCK (dec);
break;
case PROP_CAPS:
GST_OBJECT_LOCK (dec);
if (dec->caps)
gst_caps_unref (dec->caps);
dec->caps = g_value_dup_boxed (value);
GST_OBJECT_UNLOCK (dec);
break;
case PROP_SUBTITLE_ENCODING:
gst_uri_decode_bin_set_encoding (dec, g_value_get_string (value));
break;
case PROP_BUFFER_SIZE:
dec->buffer_size = g_value_get_int (value);
break;
case PROP_BUFFER_DURATION:
dec->buffer_duration = g_value_get_int64 (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_uri_decode_bin_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstURIDecodeBin *dec = GST_URI_DECODE_BIN (object);
switch (prop_id) {
case PROP_URI:
GST_OBJECT_LOCK (dec);
g_value_set_string (value, dec->uri);
GST_OBJECT_UNLOCK (dec);
break;
case PROP_SOURCE:
GST_OBJECT_LOCK (dec);
g_value_set_object (value, dec->source);
GST_OBJECT_UNLOCK (dec);
break;
case PROP_CONNECTION_SPEED:
GST_OBJECT_LOCK (dec);
g_value_set_uint (value, dec->connection_speed / 1000);
GST_OBJECT_UNLOCK (dec);
break;
case PROP_CAPS:
GST_OBJECT_LOCK (dec);
g_value_set_boxed (value, dec->caps);
GST_OBJECT_UNLOCK (dec);
break;
case PROP_SUBTITLE_ENCODING:
GST_OBJECT_LOCK (dec);
g_value_set_string (value, dec->encoding);
GST_OBJECT_UNLOCK (dec);
break;
case PROP_BUFFER_SIZE:
GST_OBJECT_LOCK (dec);
g_value_set_int (value, dec->buffer_size);
GST_OBJECT_UNLOCK (dec);
break;
case PROP_BUFFER_DURATION:
GST_OBJECT_LOCK (dec);
g_value_set_int64 (value, dec->buffer_duration);
GST_OBJECT_UNLOCK (dec);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
do_async_start (GstURIDecodeBin * dbin)
{
GstMessage *message;
dbin->async_pending = TRUE;
message = gst_message_new_async_start (GST_OBJECT_CAST (dbin), FALSE);
parent_class->handle_message (GST_BIN_CAST (dbin), message);
}
static void
do_async_done (GstURIDecodeBin * dbin)
{
GstMessage *message;
if (dbin->async_pending) {
message = gst_message_new_async_done (GST_OBJECT_CAST (dbin));
parent_class->handle_message (GST_BIN_CAST (dbin), message);
dbin->async_pending = FALSE;
}
}
#define DEFAULT_QUEUE_SIZE (3 * GST_SECOND)
#define DEFAULT_QUEUE_MIN_THRESHOLD ((DEFAULT_QUEUE_SIZE * 30) / 100)
#define DEFAULT_QUEUE_THRESHOLD ((DEFAULT_QUEUE_SIZE * 95) / 100)
static void
unknown_type_cb (GstElement * element, GstPad * pad, GstCaps * caps,
GstURIDecodeBin * decoder)
{
gchar *capsstr;
capsstr = gst_caps_to_string (caps);
GST_ELEMENT_WARNING (decoder, STREAM, WRONG_TYPE,
(_("No decoder available for type \'%s\'."), capsstr), (NULL));
g_free (capsstr);
}
/* add a streaminfo that indicates that the stream is handled by the
* given element. This usually means that a stream without actual data is
* produced but one that is sunken by an element. Examples of this are:
* cdaudio, a hardware decoder/sink, dvd meta bins etc...
*/
static void
add_element_stream (GstElement * element, GstURIDecodeBin * decoder)
{
g_warning ("add element stream");
}
/* when the decoder element signals that no more pads will be generated, we
* can commit the current group.
*/
static void
no_more_pads_full (GstElement * element, gboolean subs,
GstURIDecodeBin * decoder)
{
gboolean final;
/* setup phase */
GST_DEBUG_OBJECT (element, "no more pads, %d pending", decoder->pending);
GST_URI_DECODE_BIN_LOCK (decoder);
final = (decoder->pending == 0);
/* nothing pending, we can exit */
if (final)
goto done;
/* the object has no pending no_more_pads */
if (!g_object_get_data (G_OBJECT (element), "pending"))
goto done;
g_object_set_data (G_OBJECT (element), "pending", NULL);
decoder->pending--;
final = (decoder->pending == 0);
done:
GST_URI_DECODE_BIN_UNLOCK (decoder);
if (final)
gst_element_no_more_pads (GST_ELEMENT_CAST (decoder));
return;
}
static void
no_more_pads (GstElement * element, GstURIDecodeBin * decoder)
{
no_more_pads_full (element, FALSE, decoder);
}
static void
source_no_more_pads (GstElement * element, GstURIDecodeBin * bin)
{
GST_DEBUG_OBJECT (bin, "No more pads in source element %s.",
GST_ELEMENT_NAME (element));
g_signal_handler_disconnect (G_OBJECT (element), bin->src_np_sig_id);
bin->src_np_sig_id = 0;
g_signal_handler_disconnect (G_OBJECT (element), bin->src_nmp_sig_id);
bin->src_nmp_sig_id = 0;
no_more_pads_full (element, FALSE, bin);
}
/* Called by the signal handlers when a decodebin has
* found a new raw pad.
*/
static void
new_decoded_pad_cb (GstElement * element, GstPad * pad, gboolean last,
GstURIDecodeBin * decoder)
{
GstPad *newpad;
gchar *padname;
GST_DEBUG_OBJECT (element, "new decoded pad, name: <%s>. Last: %d",
GST_PAD_NAME (pad), last);
GST_URI_DECODE_BIN_LOCK (decoder);
padname = g_strdup_printf ("src%d", decoder->numpads);
decoder->numpads++;
GST_URI_DECODE_BIN_UNLOCK (decoder);
newpad = gst_ghost_pad_new (padname, pad);
g_free (padname);
/* store ref to the ghostpad so we can remove it */
g_object_set_data (G_OBJECT (pad), "uridecodebin.ghostpad", newpad);
gst_pad_set_active (newpad, TRUE);
gst_element_add_pad (GST_ELEMENT_CAST (decoder), newpad);
}
static void
pad_removed_cb (GstElement * element, GstPad * pad, GstURIDecodeBin * decoder)
{
GstPad *ghost;
GST_DEBUG_OBJECT (element, "pad removed name: <%s:%s>",
GST_DEBUG_PAD_NAME (pad));
/* we only care about srcpads */
if (!GST_PAD_IS_SRC (pad))
return;
if (!(ghost = g_object_get_data (G_OBJECT (pad), "uridecodebin.ghostpad")))
goto no_ghost;
/* unghost the pad */
gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (ghost), NULL);
/* deactivate and remove */
gst_pad_set_active (pad, FALSE);
gst_element_remove_pad (GST_ELEMENT_CAST (decoder), ghost);
return;
/* ERRORS */
no_ghost:
{
GST_WARNING_OBJECT (element, "no ghost pad found");
return;
}
}
/* helper function to lookup stuff in lists */
static gboolean
array_has_value (const gchar * values[], const gchar * value)
{
gint i;
for (i = 0; values[i]; i++) {
if (g_str_has_prefix (value, values[i]))
return TRUE;
}
return FALSE;
}
/* list of URIs that we consider to be streams and that need buffering.
* We have no mechanism yet to figure this out with a query. */
static const gchar *stream_uris[] = { "http://", "mms://", "mmsh://",
"mmsu://", "mmst://", NULL
};
/* blacklisted URIs, we know they will always fail. */
static const gchar *blacklisted_uris[] = { NULL };
/* mime types that we don't consider to be media types */
#if 0
static const gchar *no_media_mimes[] = {
"application/x-executable", "application/x-bzip", "application/x-gzip",
"application/zip", "application/x-compress", NULL
};
#endif
/* mime types we consider raw media */
static const gchar *raw_mimes[] = {
"audio/x-raw", "video/x-raw", NULL
};
#define IS_STREAM_URI(uri) (array_has_value (stream_uris, uri))
#define IS_BLACKLISTED_URI(uri) (array_has_value (blacklisted_uris, uri))
#define IS_NO_MEDIA_MIME(mime) (array_has_value (no_media_mimes, mime))
#define IS_RAW_MIME(mime) (array_has_value (raw_mimes, mime))
/*
* Generate and configure a source element.
*/
static GstElement *
gen_source_element (GstURIDecodeBin * decoder)
{
GstElement *source;
if (!decoder->uri)
goto no_uri;
if (!gst_uri_is_valid (decoder->uri))
goto invalid_uri;
if (IS_BLACKLISTED_URI (decoder->uri))
goto uri_blacklisted;
source = gst_element_make_from_uri (GST_URI_SRC, decoder->uri, "source");
if (!source)
goto no_source;
decoder->is_stream = IS_STREAM_URI (decoder->uri);
/* make HTTP sources send extra headers so we get icecast
* metadata in case the stream is an icecast stream */
if (!strncmp (decoder->uri, "http://", 7) &&
g_object_class_find_property (G_OBJECT_GET_CLASS (source),
"iradio-mode")) {
g_object_set (source, "iradio-mode", TRUE, NULL);
}
if (g_object_class_find_property (G_OBJECT_GET_CLASS (source),
"connection-speed")) {
GST_DEBUG_OBJECT (decoder,
"setting connection-speed=%d to source element",
decoder->connection_speed / 1000);
g_object_set (source, "connection-speed",
decoder->connection_speed / 1000, NULL);
}
if (g_object_class_find_property (G_OBJECT_GET_CLASS (source),
"subtitle-encoding")) {
GST_DEBUG_OBJECT (decoder,
"setting subtitle-encoding=%s to source element", decoder->encoding);
g_object_set (G_OBJECT (source), "subtitle-encoding", decoder->encoding,
NULL);
}
return source;
/* ERRORS */
no_uri:
{
GST_ELEMENT_ERROR (decoder, RESOURCE, NOT_FOUND,
(_("No URI specified to play from.")), (NULL));
return NULL;
}
invalid_uri:
{
GST_ELEMENT_ERROR (decoder, RESOURCE, NOT_FOUND,
(_("Invalid URI \"%s\"."), decoder->uri), (NULL));
return NULL;
}
uri_blacklisted:
{
GST_ELEMENT_ERROR (decoder, RESOURCE, FAILED,
(_("This stream type cannot be played yet.")), (NULL));
return NULL;
}
no_source:
{
gchar *prot = gst_uri_get_protocol (decoder->uri);
/* whoops, could not create the source element, dig a little deeper to
* figure out what might be wrong. */
if (prot) {
GST_ELEMENT_ERROR (decoder, RESOURCE, FAILED,
(_("No URI handler implemented for \"%s\"."), prot), (NULL));
g_free (prot);
} else
goto invalid_uri;
return NULL;
}
}
/**
* has_all_raw_caps:
* @pad: a #GstPad
* @all_raw: pointer to hold the result
*
* check if the caps of the pad are all raw. The caps are all raw if
* all of its structures contain audio/x-raw or video/x-raw.
*
* Returns: %FALSE @pad has no caps. Else TRUE and @all_raw set t the result.
*/
static gboolean
has_all_raw_caps (GstPad * pad, gboolean * all_raw)
{
GstCaps *caps;
gint capssize;
guint i, num_raw = 0;
gboolean res = FALSE;
caps = gst_pad_get_caps (pad);
if (caps == NULL)
return FALSE;
capssize = gst_caps_get_size (caps);
/* no caps, skip and move to the next pad */
if (capssize == 0 || gst_caps_is_empty (caps) || gst_caps_is_any (caps))
goto done;
/* count the number of raw formats in the caps */
for (i = 0; i < capssize; ++i) {
GstStructure *s;
const gchar *mime_type;
s = gst_caps_get_structure (caps, i);
mime_type = gst_structure_get_name (s);
if (IS_RAW_MIME (mime_type))
++num_raw;
}
*all_raw = (num_raw == capssize);
res = TRUE;
done:
gst_caps_unref (caps);
return res;
}
/**
* analyse_source:
* @decoder: a #GstURIDecodeBin
* @is_raw: are all pads raw data
* @have_out: does the source have output
* @is_dynamic: is this a dynamic source
*
* Check the source of @decoder and collect information about it.
*
* @is_raw will be set to TRUE if the source only produces raw pads. When this
* function returns, all of the raw pad of the source will be added
* to @decoder.
*
* @have_out: will be set to TRUE if the source has output pads.
*
* @is_dynamic: TRUE if the element will create (more) pads dynamically later
* on.
*
* Returns: FALSE if a fatal error occured while scanning.
*/
static gboolean
analyse_source (GstURIDecodeBin * decoder, gboolean * is_raw,
gboolean * have_out, gboolean * is_dynamic)
{
GstIterator *pads_iter;
gboolean done = FALSE;
gboolean res = TRUE;
*have_out = FALSE;
*is_raw = FALSE;
*is_dynamic = FALSE;
pads_iter = gst_element_iterate_src_pads (decoder->source);
while (!done) {
GstPad *pad;
switch (gst_iterator_next (pads_iter, (gpointer) & pad)) {
case GST_ITERATOR_ERROR:
res = FALSE;
/* FALLTROUGH */
case GST_ITERATOR_DONE:
done = TRUE;
break;
case GST_ITERATOR_RESYNC:
/* reset results and resync */
*have_out = FALSE;
*is_raw = FALSE;
*is_dynamic = FALSE;
gst_iterator_resync (pads_iter);
break;
case GST_ITERATOR_OK:
/* we now officially have an ouput pad */
*have_out = TRUE;
/* if FALSE, this pad has no caps and we continue with the next pad. */
if (!has_all_raw_caps (pad, is_raw)) {
gst_object_unref (pad);
break;
}
/* caps on source pad are all raw, we can add the pad */
if (*is_raw)
new_decoded_pad_cb (decoder->source, pad, FALSE, decoder);
gst_object_unref (pad);
break;
}
}
gst_iterator_free (pads_iter);
if (!*have_out) {
GstElementClass *elemclass;
GList *walk;
/* element has no output pads, check for padtemplates that list SOMETIMES
* pads. */
elemclass = GST_ELEMENT_GET_CLASS (decoder->source);
walk = gst_element_class_get_pad_template_list (elemclass);
while (walk != NULL) {
GstPadTemplate *templ;
templ = (GstPadTemplate *) walk->data;
if (GST_PAD_TEMPLATE_DIRECTION (templ) == GST_PAD_SRC) {
if (GST_PAD_TEMPLATE_PRESENCE (templ) == GST_PAD_SOMETIMES)
*is_dynamic = TRUE;
break;
}
walk = g_list_next (walk);
}
}
return res;
}
static void
remove_decoders (GstURIDecodeBin * bin)
{
GSList *walk;
for (walk = bin->decodebins; walk; walk = g_slist_next (walk)) {
GstElement *decoder = GST_ELEMENT_CAST (walk->data);
GST_DEBUG_OBJECT (bin, "removing old decoder element");
gst_element_set_state (decoder, GST_STATE_NULL);
gst_bin_remove (GST_BIN_CAST (bin), decoder);
}
g_slist_free (bin->decodebins);
bin->decodebins = NULL;
}
static void
remove_pads (GstURIDecodeBin * bin)
{
GSList *walk;
for (walk = bin->srcpads; walk; walk = g_slist_next (walk)) {
GstPad *pad = GST_PAD_CAST (walk->data);
GST_DEBUG_OBJECT (bin, "removing old pad");
gst_pad_set_active (pad, FALSE);
gst_element_remove_pad (GST_ELEMENT_CAST (bin), pad);
}
g_slist_free (bin->srcpads);
bin->srcpads = NULL;
}
static void
proxy_unknown_type_signal (GstElement * element, GstPad * pad, GstCaps * caps,
GstURIDecodeBin * dec)
{
GST_DEBUG_OBJECT (dec, "unknown-type signaled");
g_signal_emit (G_OBJECT (dec),
gst_uri_decode_bin_signals[SIGNAL_UNKNOWN_TYPE], 0, pad, caps);
}
static gboolean
proxy_autoplug_continue_signal (GstElement * element, GstPad * pad,
GstCaps * caps, GstURIDecodeBin * dec)
{
gboolean result;
g_signal_emit (G_OBJECT (dec),
gst_uri_decode_bin_signals[SIGNAL_AUTOPLUG_CONTINUE], 0, pad, caps,
&result);
GST_DEBUG_OBJECT (dec, "autoplug-continue returned %d", result);
return result;
}
static GValueArray *
proxy_autoplug_factories_signal (GstElement * element, GstPad * pad,
GstCaps * caps, GstURIDecodeBin * dec)
{
GValueArray *result;
g_signal_emit (G_OBJECT (dec),
gst_uri_decode_bin_signals[SIGNAL_AUTOPLUG_FACTORIES], 0, pad, caps,
&result);
GST_DEBUG_OBJECT (dec, "autoplug-factories returned %p", result);
return result;
}
static GstAutoplugSelectResult
proxy_autoplug_select_signal (GstElement * element, GstPad * pad,
GstCaps * caps, GstElementFactory * factory, GstURIDecodeBin * dec)
{
GstAutoplugSelectResult result;
g_signal_emit (G_OBJECT (dec),
gst_uri_decode_bin_signals[SIGNAL_AUTOPLUG_SELECT], 0, pad, caps, factory,
&result);
GST_DEBUG_OBJECT (dec, "autoplug-select returned %d", result);
return result;
}
static void
proxy_drained_signal (GstElement * element, GstURIDecodeBin * dec)
{
GST_DEBUG_OBJECT (dec, "drained signaled");
g_signal_emit (G_OBJECT (dec),
gst_uri_decode_bin_signals[SIGNAL_DRAINED], 0, NULL);
}
/* make a decodebin and connect to all the signals */
static GstElement *
make_decoder (GstURIDecodeBin * decoder)
{
GstElement *decodebin;
/* now create the decoder element */
decodebin = gst_element_factory_make ("decodebin2", NULL);
if (!decodebin)
goto no_decodebin;
/* connect signals to proxy */
g_signal_connect (G_OBJECT (decodebin), "unknown-type",
G_CALLBACK (proxy_unknown_type_signal), decoder);
g_signal_connect (G_OBJECT (decodebin), "autoplug-continue",
G_CALLBACK (proxy_autoplug_continue_signal), decoder);
g_signal_connect (G_OBJECT (decodebin), "autoplug-factories",
G_CALLBACK (proxy_autoplug_factories_signal), decoder);
g_signal_connect (G_OBJECT (decodebin), "autoplug-select",
G_CALLBACK (proxy_autoplug_select_signal), decoder);
g_signal_connect (G_OBJECT (decodebin), "drained",
G_CALLBACK (proxy_drained_signal), decoder);
/* set up callbacks to create the links between decoded data
* and video/audio/subtitle rendering/output. */
g_signal_connect (G_OBJECT (decodebin),
"new-decoded-pad", G_CALLBACK (new_decoded_pad_cb), decoder);
g_signal_connect (G_OBJECT (decodebin),
"pad-removed", G_CALLBACK (pad_removed_cb), decoder);
g_signal_connect (G_OBJECT (decodebin), "no-more-pads",
G_CALLBACK (no_more_pads), decoder);
g_signal_connect (G_OBJECT (decodebin),
"unknown-type", G_CALLBACK (unknown_type_cb), decoder);
g_object_set_data (G_OBJECT (decodebin), "pending", "1");
g_object_set (G_OBJECT (decodebin), "subtitle-encoding", decoder->encoding,
NULL);
decoder->pending++;
gst_bin_add (GST_BIN_CAST (decoder), decodebin);
decoder->decodebins = g_slist_prepend (decoder->decodebins, decodebin);
return decodebin;
/* ERRORS */
no_decodebin:
{
GST_ELEMENT_ERROR (decoder, CORE, MISSING_PLUGIN,
(_("Could not create \"decodebin2\" element.")), (NULL));
return NULL;
}
}
static void
type_found (GstElement * typefind, guint probability,
GstCaps * caps, GstURIDecodeBin * decoder)
{
GstElement *dec_elem, *queue;
GST_DEBUG_OBJECT (decoder, "typefind found caps %" GST_PTR_FORMAT, caps);
dec_elem = make_decoder (decoder);
if (!dec_elem)
goto no_decodebin;
queue = gst_element_factory_make ("queue2", NULL);
if (!queue)
goto no_queue2;
g_object_set (G_OBJECT (queue), "use-buffering", TRUE, NULL);
/* g_object_set (G_OBJECT (queue), "temp-location", "temp", NULL); */
/* Disable max-size-buffers */
g_object_set (G_OBJECT (queue), "max-size-buffers", 0, NULL);
/* If buffer size or duration are set, set them on the queue2 element */
if (decoder->buffer_size != -1)
g_object_set (G_OBJECT (queue), "max-size-bytes",
decoder->buffer_size, NULL);
if (decoder->buffer_duration != -1)
g_object_set (G_OBJECT (queue), "max-size-time",
decoder->buffer_duration, NULL);
gst_bin_add (GST_BIN_CAST (decoder), queue);
if (!gst_element_link_pads (typefind, "src", queue, "sink"))
goto could_not_link;
g_object_set (G_OBJECT (dec_elem), "sink-caps", caps, NULL);
if (!gst_element_link_pads (queue, "src", dec_elem, "sink"))
goto could_not_link;
gst_element_set_state (dec_elem, GST_STATE_PLAYING);
gst_element_set_state (queue, GST_STATE_PLAYING);
do_async_done (decoder);
return;
/* ERRORS */
no_decodebin:
{
/* error was posted */
return;
}
could_not_link:
{
GST_ELEMENT_ERROR (decoder, CORE, NEGOTIATION,
(NULL), ("Can't link typefind to decodebin2 element"));
return;
}
no_queue2:
{
GST_ELEMENT_ERROR (decoder, CORE, MISSING_PLUGIN,
(_("Could not create \"queue2\" element.")), (NULL));
return;
}
}
/* setup a streaming source. This will first plug a typefind element to the
* source. After we find the type, we decide to plug a queue2 and continue to
* plug a decodebin2 starting from the found caps */
static gboolean
setup_streaming (GstURIDecodeBin * decoder)
{
GstElement *typefind;
/* now create the decoder element */
typefind = gst_element_factory_make ("typefind", NULL);
if (!typefind)
goto no_typefind;
gst_bin_add (GST_BIN_CAST (decoder), typefind);
if (!gst_element_link (decoder->source, typefind))
goto could_not_link;
decoder->typefind = typefind;
/* connect a signal to find out when the typefind element found
* a type */
decoder->have_type_id =
g_signal_connect (G_OBJECT (decoder->typefind), "have-type",
G_CALLBACK (type_found), decoder);
do_async_start (decoder);
return TRUE;
/* ERRORS */
no_typefind:
{
GST_ELEMENT_ERROR (decoder, CORE, MISSING_PLUGIN,
(_("Could not create \"typefind\" element.")), (NULL));
return FALSE;
}
could_not_link:
{
GST_ELEMENT_ERROR (decoder, CORE, NEGOTIATION,
(NULL), ("Can't link source to typefind element"));
return FALSE;
}
}
static void
remove_source (GstURIDecodeBin * bin)
{
GstElement *source = bin->source;
if (source) {
GST_DEBUG_OBJECT (bin, "removing old src element");
gst_element_set_state (source, GST_STATE_NULL);
gst_bin_remove (GST_BIN_CAST (bin), source);
if (bin->src_np_sig_id) {
g_signal_handler_disconnect (G_OBJECT (source), bin->src_np_sig_id);
bin->src_np_sig_id = 0;
}
if (bin->src_nmp_sig_id) {
g_signal_handler_disconnect (G_OBJECT (source), bin->src_nmp_sig_id);
bin->src_nmp_sig_id = 0;
}
bin->source = NULL;
}
}
/* is called when a dynamic source element created a new pad. */
static void
source_new_pad (GstElement * element, GstPad * pad, GstURIDecodeBin * bin)
{
GstElement *decoder;
gboolean is_raw;
GST_URI_DECODE_BIN_LOCK (bin);
GST_DEBUG_OBJECT (bin, "Found new pad %s.%s in source element %s",
GST_DEBUG_PAD_NAME (pad), GST_ELEMENT_NAME (element));
/* if this is a pad with all raw caps, we can expose it */
if (has_all_raw_caps (pad, &is_raw) && is_raw) {
/* it's all raw, create output pads. */
GST_URI_DECODE_BIN_UNLOCK (bin);
new_decoded_pad_cb (element, pad, FALSE, bin);
return;
}
/* not raw, create decoder */
decoder = make_decoder (bin);
if (!decoder)
goto no_decodebin;
/* and link to decoder */
if (!gst_element_link (bin->source, decoder))
goto could_not_link;
GST_DEBUG_OBJECT (bin, "linked decoder to new pad");
gst_element_set_state (decoder, GST_STATE_PLAYING);
GST_URI_DECODE_BIN_UNLOCK (bin);
return;
/* ERRORS */
no_decodebin:
{
/* error was posted */
GST_URI_DECODE_BIN_UNLOCK (bin);
return;
}
could_not_link:
{
GST_ELEMENT_ERROR (bin, CORE, NEGOTIATION,
(NULL), ("Can't link source to decoder element"));
GST_URI_DECODE_BIN_UNLOCK (bin);
return;
}
}
/* construct and run the source and decoder elements until we found
* all the streams or until a preroll queue has been filled.
*/
static gboolean
setup_source (GstURIDecodeBin * decoder)
{
gboolean is_raw, have_out, is_dynamic;
GST_DEBUG_OBJECT (decoder, "setup source");
/* delete old src */
remove_source (decoder);
/* create and configure an element that can handle the uri */
if (!(decoder->source = gen_source_element (decoder)))
goto no_source;
/* state will be merged later - if file is not found, error will be
* handled by the application right after. */
gst_bin_add (GST_BIN_CAST (decoder), decoder->source);
/* notify of the new source used */
g_object_notify (G_OBJECT (decoder), "source");
/* remove the old decoders now, if any */
remove_decoders (decoder);
/* see if the source element emits raw audio/video all by itself,
* if so, we can create streams for the pads and be done with it.
* Also check that is has source pads, if not, we assume it will
* do everything itself. */
if (!analyse_source (decoder, &is_raw, &have_out, &is_dynamic))
goto invalid_source;
if (is_raw) {
GST_DEBUG_OBJECT (decoder, "Source provides all raw data");
/* source provides raw data, we added the pads and we can now signal a
* no_more pads because we are done. */
gst_element_no_more_pads (GST_ELEMENT_CAST (decoder));
return TRUE;
}
if (!have_out && !is_dynamic) {
GST_DEBUG_OBJECT (decoder, "Source has no output pads");
/* create a stream to indicate that this uri is handled by a self
* contained element. We are now done. */
add_element_stream (decoder->source, decoder);
return TRUE;
}
if (is_dynamic) {
GST_DEBUG_OBJECT (decoder, "Source has dynamic output pads");
/* connect a handler for the new-pad signal */
decoder->src_np_sig_id =
g_signal_connect (G_OBJECT (decoder->source), "pad-added",
G_CALLBACK (source_new_pad), decoder);
decoder->src_nmp_sig_id =
g_signal_connect (G_OBJECT (decoder->source), "no-more-pads",
G_CALLBACK (source_no_more_pads), decoder);
g_object_set_data (G_OBJECT (decoder->source), "pending", "1");
decoder->pending++;
} else {
if (decoder->is_stream) {
GST_DEBUG_OBJECT (decoder, "Setting up streaming");
/* do the stream things here */
if (!setup_streaming (decoder))
goto streaming_failed;
} else {
GstElement *dec_elem;
/* no streaming source, we can link now */
GST_DEBUG_OBJECT (decoder, "Plugging decodebin to source");
dec_elem = make_decoder (decoder);
if (!dec_elem)
goto no_decoder;
if (!gst_element_link (decoder->source, dec_elem))
goto could_not_link;
}
}
return TRUE;
/* ERRORS */
no_source:
{
/* error message was already posted */
return FALSE;
}
invalid_source:
{
GST_ELEMENT_ERROR (decoder, CORE, FAILED,
(_("Source element is invalid.")), (NULL));
return FALSE;
}
no_decoder:
{
/* message was posted */
return FALSE;
}
streaming_failed:
{
/* message was posted */
return FALSE;
}
could_not_link:
{
GST_ELEMENT_ERROR (decoder, CORE, NEGOTIATION,
(NULL), ("Can't link source to decoder element"));
return FALSE;
}
}
static void
value_list_append_structure_list (GValue * list_val, GstStructure ** first,
GList * structure_list)
{
GList *l;
for (l = structure_list; l != NULL; l = l->next) {
GValue val = { 0, };
if (*first == NULL)
*first = gst_structure_copy ((GstStructure *) l->data);
g_value_init (&val, GST_TYPE_STRUCTURE);
g_value_take_boxed (&val, gst_structure_copy ((GstStructure *) l->data));
gst_value_list_append_value (list_val, &val);
g_value_unset (&val);
}
}
/* if it's a redirect message with multiple redirect locations we might
* want to pick a different 'best' location depending on the required
* bitrates and the connection speed */
static GstMessage *
handle_redirect_message (GstURIDecodeBin * dec, GstMessage * msg)
{
const GValue *locations_list, *location_val;
GstMessage *new_msg;
GstStructure *new_structure = NULL;
GList *l_good = NULL, *l_neutral = NULL, *l_bad = NULL;
GValue new_list = { 0, };
guint size, i;
GST_DEBUG_OBJECT (dec, "redirect message: %" GST_PTR_FORMAT, msg);
GST_DEBUG_OBJECT (dec, "connection speed: %u", dec->connection_speed);
if (dec->connection_speed == 0 || msg->structure == NULL)
return msg;
locations_list = gst_structure_get_value (msg->structure, "locations");
if (locations_list == NULL)
return msg;
size = gst_value_list_get_size (locations_list);
if (size < 2)
return msg;
/* maintain existing order as much as possible, just sort references
* with too high a bitrate to the end (the assumption being that if
* bitrates are given they are given for all interesting streams and
* that the you-need-at-least-version-xyz redirect has the same bitrate
* as the lowest referenced redirect alternative) */
for (i = 0; i < size; ++i) {
const GstStructure *s;
gint bitrate = 0;
location_val = gst_value_list_get_value (locations_list, i);
s = (const GstStructure *) g_value_get_boxed (location_val);
if (!gst_structure_get_int (s, "minimum-bitrate", &bitrate) || bitrate <= 0) {
GST_DEBUG_OBJECT (dec, "no bitrate: %" GST_PTR_FORMAT, s);
l_neutral = g_list_append (l_neutral, (gpointer) s);
} else if (bitrate > dec->connection_speed) {
GST_DEBUG_OBJECT (dec, "bitrate too high: %" GST_PTR_FORMAT, s);
l_bad = g_list_append (l_bad, (gpointer) s);
} else if (bitrate <= dec->connection_speed) {
GST_DEBUG_OBJECT (dec, "bitrate OK: %" GST_PTR_FORMAT, s);
l_good = g_list_append (l_good, (gpointer) s);
}
}
g_value_init (&new_list, GST_TYPE_LIST);
value_list_append_structure_list (&new_list, &new_structure, l_good);
value_list_append_structure_list (&new_list, &new_structure, l_neutral);
value_list_append_structure_list (&new_list, &new_structure, l_bad);
gst_structure_set_value (new_structure, "locations", &new_list);
g_value_unset (&new_list);
g_list_free (l_good);
g_list_free (l_neutral);
g_list_free (l_bad);
new_msg = gst_message_new_element (msg->src, new_structure);
gst_message_unref (msg);
GST_DEBUG_OBJECT (dec, "new redirect message: %" GST_PTR_FORMAT, new_msg);
return new_msg;
}
static void
handle_message (GstBin * bin, GstMessage * msg)
{
if (GST_MESSAGE_TYPE (msg) == GST_MESSAGE_ELEMENT && msg->structure != NULL
&& gst_structure_has_name (msg->structure, "redirect")) {
/* sort redirect messages based on the connection speed. This simplifies
* the user of this element as it can in most cases just pick the first item
* of the sorted list as a good redirection candidate. It can of course
* choose something else from the list if it has a better way. */
msg = handle_redirect_message (GST_URI_DECODE_BIN (bin), msg);
}
GST_BIN_CLASS (parent_class)->handle_message (bin, msg);
}
/* generic struct passed to all query fold methods
* FIXME, move to core.
*/
typedef struct
{
GstQuery *query;
gint64 min;
gint64 max;
gboolean seekable;
gboolean live;
} QueryFold;
typedef void (*QueryInitFunction) (GstURIDecodeBin * dec, QueryFold * fold);
typedef void (*QueryDoneFunction) (GstURIDecodeBin * dec, QueryFold * fold);
/* for duration/position we collect all durations/positions and take
* the MAX of all valid results */
static void
decoder_query_init (GstURIDecodeBin * dec, QueryFold * fold)
{
fold->min = 0;
fold->max = -1;
fold->seekable = TRUE;
fold->live = 0;
}
static gboolean
decoder_query_duration_fold (GstPad * item, GValue * ret, QueryFold * fold)
{
if (gst_pad_query (item, fold->query)) {
gint64 duration;
g_value_set_boolean (ret, TRUE);
gst_query_parse_duration (fold->query, NULL, &duration);
GST_DEBUG_OBJECT (item, "got duration %" G_GINT64_FORMAT, duration);
if (duration > fold->max)
fold->max = duration;
}
gst_object_unref (item);
return TRUE;
}
static void
decoder_query_duration_done (GstURIDecodeBin * dec, QueryFold * fold)
{
GstFormat format;
gst_query_parse_duration (fold->query, &format, NULL);
/* store max in query result */
gst_query_set_duration (fold->query, format, fold->max);
GST_DEBUG ("max duration %" G_GINT64_FORMAT, fold->max);
}
static gboolean
decoder_query_position_fold (GstPad * item, GValue * ret, QueryFold * fold)
{
if (gst_pad_query (item, fold->query)) {
gint64 position;
g_value_set_boolean (ret, TRUE);
gst_query_parse_position (fold->query, NULL, &position);
GST_DEBUG_OBJECT (item, "got position %" G_GINT64_FORMAT, position);
if (position > fold->max)
fold->max = position;
}
gst_object_unref (item);
return TRUE;
}
static void
decoder_query_position_done (GstURIDecodeBin * dec, QueryFold * fold)
{
GstFormat format;
gst_query_parse_position (fold->query, &format, NULL);
/* store max in query result */
gst_query_set_position (fold->query, format, fold->max);
GST_DEBUG_OBJECT (dec, "max position %" G_GINT64_FORMAT, fold->max);
}
static gboolean
decoder_query_latency_fold (GstPad * item, GValue * ret, QueryFold * fold)
{
if (gst_pad_query (item, fold->query)) {
GstClockTime min, max;
gboolean live;
g_value_set_boolean (ret, TRUE);
gst_query_parse_latency (fold->query, &live, &min, &max);
GST_DEBUG_OBJECT (item,
"got latency min %" GST_TIME_FORMAT ", max %" GST_TIME_FORMAT
", live %d", GST_TIME_ARGS (min), GST_TIME_ARGS (max), live);
/* for the combined latency we collect the MAX of all min latencies and
* the MIN of all max latencies */
if (min > fold->min)
fold->min = min;
if (fold->max == -1)
fold->max = max;
else if (max < fold->max)
fold->max = max;
if (fold->live == FALSE)
fold->live = live;
}
gst_object_unref (item);
return TRUE;
}
static void
decoder_query_latency_done (GstURIDecodeBin * dec, QueryFold * fold)
{
/* store max in query result */
gst_query_set_latency (fold->query, fold->live, fold->min, fold->max);
GST_DEBUG_OBJECT (dec,
"latency min %" GST_TIME_FORMAT ", max %" GST_TIME_FORMAT
", live %d", GST_TIME_ARGS (fold->min), GST_TIME_ARGS (fold->max),
fold->live);
}
/* we are seekable if all srcpads are seekable */
static gboolean
decoder_query_seeking_fold (GstPad * item, GValue * ret, QueryFold * fold)
{
if (gst_pad_query (item, fold->query)) {
gboolean seekable;
g_value_set_boolean (ret, TRUE);
gst_query_parse_seeking (fold->query, NULL, &seekable, NULL, NULL);
GST_DEBUG_OBJECT (item, "got seekable %d", seekable);
if (fold->seekable == TRUE)
fold->seekable = seekable;
}
gst_object_unref (item);
return TRUE;
}
static void
decoder_query_seeking_done (GstURIDecodeBin * dec, QueryFold * fold)
{
GstFormat format;
gst_query_parse_seeking (fold->query, &format, NULL, NULL, NULL);
gst_query_set_seeking (fold->query, format, fold->seekable, 0, -1);
GST_DEBUG_OBJECT (dec, "seekable %d", fold->seekable);
}
/* generic fold, return first valid result */
static gboolean
decoder_query_generic_fold (GstPad * item, GValue * ret, QueryFold * fold)
{
gboolean res;
if ((res = gst_pad_query (item, fold->query))) {
g_value_set_boolean (ret, TRUE);
GST_DEBUG_OBJECT (item, "answered query %p", fold->query);
}
gst_object_unref (item);
/* and stop as soon as we have a valid result */
return !res;
}
/* we're a bin, the default query handler iterates sink elements, which we don't
* have normally. We should just query all source pads.
*/
static gboolean
gst_uri_decode_bin_query (GstElement * element, GstQuery * query)
{
GstURIDecodeBin *decoder;
gboolean res = FALSE;
GstIterator *iter;
GstIteratorFoldFunction fold_func;
QueryInitFunction fold_init = NULL;
QueryDoneFunction fold_done = NULL;
QueryFold fold_data;
GValue ret = { 0 };
decoder = GST_URI_DECODE_BIN (element);
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_DURATION:
/* iterate and collect durations */
fold_func = (GstIteratorFoldFunction) decoder_query_duration_fold;
fold_init = decoder_query_init;
fold_done = decoder_query_duration_done;
break;
case GST_QUERY_POSITION:
/* iterate and collect durations */
fold_func = (GstIteratorFoldFunction) decoder_query_position_fold;
fold_init = decoder_query_init;
fold_done = decoder_query_position_done;
break;
case GST_QUERY_LATENCY:
/* iterate and collect durations */
fold_func = (GstIteratorFoldFunction) decoder_query_latency_fold;
fold_init = decoder_query_init;
fold_done = decoder_query_latency_done;
break;
case GST_QUERY_SEEKING:
/* iterate and collect durations */
fold_func = (GstIteratorFoldFunction) decoder_query_seeking_fold;
fold_init = decoder_query_init;
fold_done = decoder_query_seeking_done;
break;
default:
fold_func = (GstIteratorFoldFunction) decoder_query_generic_fold;
break;
}
fold_data.query = query;
g_value_init (&ret, G_TYPE_BOOLEAN);
g_value_set_boolean (&ret, FALSE);
iter = gst_element_iterate_src_pads (element);
GST_DEBUG_OBJECT (element, "Sending query %p (type %d) to src pads",
query, GST_QUERY_TYPE (query));
if (fold_init)
fold_init (decoder, &fold_data);
while (TRUE) {
GstIteratorResult ires;
ires = gst_iterator_fold (iter, fold_func, &ret, &fold_data);
switch (ires) {
case GST_ITERATOR_RESYNC:
gst_iterator_resync (iter);
if (fold_init)
fold_init (decoder, &fold_data);
g_value_set_boolean (&ret, FALSE);
break;
case GST_ITERATOR_OK:
case GST_ITERATOR_DONE:
res = g_value_get_boolean (&ret);
if (fold_done != NULL && res)
fold_done (decoder, &fold_data);
goto done;
default:
res = FALSE;
goto done;
}
}
done:
gst_iterator_free (iter);
return res;
}
static GstStateChangeReturn
gst_uri_decode_bin_change_state (GstElement * element,
GstStateChange transition)
{
GstStateChangeReturn ret;
GstURIDecodeBin *decoder;
decoder = GST_URI_DECODE_BIN (element);
switch (transition) {
case GST_STATE_CHANGE_READY_TO_PAUSED:
if (!setup_source (decoder))
goto source_failed;
break;
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
switch (transition) {
case GST_STATE_CHANGE_READY_TO_PAUSED:
GST_DEBUG ("ready to paused");
if (ret == GST_STATE_CHANGE_FAILURE)
goto setup_failed;
break;
case GST_STATE_CHANGE_PAUSED_TO_READY:
GST_DEBUG ("paused to ready");
remove_decoders (decoder);
remove_pads (decoder);
remove_source (decoder);
do_async_done (decoder);
break;
default:
break;
}
return ret;
/* ERRORS */
source_failed:
{
return GST_STATE_CHANGE_FAILURE;
}
setup_failed:
{
/* clean up leftover groups */
return GST_STATE_CHANGE_FAILURE;
}
}
gboolean gst_decode_bin_plugin_init (GstPlugin * plugin);
static gboolean
gst_uri_decode_bin_plugin_init (GstPlugin * plugin)
{
GST_DEBUG_CATEGORY_INIT (gst_uri_decode_bin_debug, "uridecodebin", 0,
"URI decoder element");
#ifdef ENABLE_NLS
GST_DEBUG ("binding text domain %s to locale dir %s", GETTEXT_PACKAGE,
LOCALEDIR);
bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);
bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
#endif /* ENABLE_NLS */
return gst_element_register (plugin, "uridecodebin", GST_RANK_NONE,
GST_TYPE_URI_DECODE_BIN);
}
static gboolean
plugin_init (GstPlugin * plugin)
{
if (!gst_decode_bin_plugin_init (plugin))
return FALSE;
if (!gst_uri_decode_bin_plugin_init (plugin))
return FALSE;
return TRUE;
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"uridecodebin",
"URI Decoder bin", plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME,
GST_PACKAGE_ORIGIN)
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