gstreamer/gst/playback/gstplaybasebin.c
Wim Taymans b7715638af gst/playback/: Better error recovery. Added configurable preroll queue size. Faster detection of no-more-pads.
Original commit message from CVS:
* gst/playback/gstdecodebin.c: (gst_decode_bin_get_type),
(gst_decode_bin_class_init), (gst_decode_bin_is_dynamic),
(gst_decode_bin_factory_filter), (compare_ranks), (print_feature),
(gst_decode_bin_init), (gst_decode_bin_dispose),
(find_compatibles), (close_pad_link), (try_to_link_1), (new_pad),
(no_more_pads), (close_link), (type_found),
(gst_decode_bin_set_property), (gst_decode_bin_get_property),
(gst_decode_bin_change_state), (plugin_init):
* gst/playback/gstplaybasebin.c: (gst_play_base_bin_get_type),
(gst_play_base_bin_class_init), (gst_play_base_bin_init),
(gst_play_base_bin_dispose), (queue_overrun),
(gen_preroll_element), (remove_prerolls), (unknown_type),
(no_more_pads), (new_stream), (setup_source),
(gst_play_base_bin_set_property), (gst_play_base_bin_get_property),
(play_base_eos), (gst_play_base_bin_change_state),
(gst_play_base_bin_add_element),
(gst_play_base_bin_remove_element),
(gst_play_base_bin_mute_stream), (gst_play_base_bin_link_stream),
(gst_play_base_bin_unlink_stream),
(gst_play_base_bin_get_streaminfo):
* gst/playback/gstplaybasebin.h:
Better error recovery. Added configurable preroll queue size. Faster
detection of no-more-pads.
2004-07-16 10:45:33 +00:00

646 lines
19 KiB
C

/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* 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 "gstplaybasebin.h"
GST_DEBUG_CATEGORY_STATIC (gst_play_base_bin_debug);
#define GST_CAT_DEFAULT gst_play_base_bin_debug
#define DEFAULT_QUEUE_SIZE (3 * GST_SECOND)
/* props */
enum
{
ARG_0,
ARG_URI,
ARG_THREADED,
ARG_NSTREAMS,
ARG_QUEUE_SIZE,
ARG_STREAMINFO,
};
/* signals */
enum
{
MUTE_STREAM_SIGNAL,
LINK_STREAM_SIGNAL,
UNLINK_STREAM_SIGNAL,
LAST_SIGNAL
};
static void gst_play_base_bin_class_init (GstPlayBaseBinClass * klass);
static void gst_play_base_bin_init (GstPlayBaseBin * play_base_bin);
static void gst_play_base_bin_dispose (GObject * object);
static void gst_play_base_bin_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * spec);
static void gst_play_base_bin_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * spec);
static GstElementStateReturn gst_play_base_bin_change_state (GstElement *
element);
static void gst_play_base_bin_add_element (GstBin * bin, GstElement * element);
static void gst_play_base_bin_remove_element (GstBin * bin,
GstElement * element);
static GstElementClass *parent_class;
static guint gst_play_base_bin_signals[LAST_SIGNAL] = { 0 };
GType
gst_play_base_bin_get_type (void)
{
static GType gst_play_base_bin_type = 0;
if (!gst_play_base_bin_type) {
static const GTypeInfo gst_play_base_bin_info = {
sizeof (GstPlayBaseBinClass),
NULL,
NULL,
(GClassInitFunc) gst_play_base_bin_class_init,
NULL,
NULL,
sizeof (GstPlayBaseBin),
0,
(GInstanceInitFunc) gst_play_base_bin_init,
NULL
};
gst_play_base_bin_type = g_type_register_static (GST_TYPE_BIN,
"GstPlayBaseBin", &gst_play_base_bin_info, 0);
}
return gst_play_base_bin_type;
}
static void
gst_play_base_bin_class_init (GstPlayBaseBinClass * klass)
{
GObjectClass *gobject_klass;
GstElementClass *gstelement_klass;
GstBinClass *gstbin_klass;
gobject_klass = (GObjectClass *) klass;
gstelement_klass = (GstElementClass *) klass;
gstbin_klass = (GstBinClass *) klass;
parent_class = g_type_class_ref (gst_bin_get_type ());
gobject_klass->set_property = gst_play_base_bin_set_property;
gobject_klass->get_property = gst_play_base_bin_get_property;
g_object_class_install_property (gobject_klass, ARG_URI,
g_param_spec_string ("uri", "URI", "URI of the media to play",
NULL, G_PARAM_READWRITE));
g_object_class_install_property (gobject_klass, ARG_NSTREAMS,
g_param_spec_int ("nstreams", "NStreams", "number of streams",
0, G_MAXINT, 0, G_PARAM_READABLE));
g_object_class_install_property (gobject_klass, ARG_QUEUE_SIZE,
g_param_spec_uint64 ("queue-size", "Queue size",
"Size of internal queues in nanoseconds", 0, G_MAXINT64,
DEFAULT_QUEUE_SIZE, G_PARAM_READABLE));
g_object_class_install_property (gobject_klass, ARG_STREAMINFO,
g_param_spec_pointer ("stream-info", "Stream info", "List of streaminfo",
G_PARAM_READABLE));
GST_DEBUG_CATEGORY_INIT (gst_play_base_bin_debug, "playbasebin", 0,
"playbasebin");
gst_play_base_bin_signals[MUTE_STREAM_SIGNAL] =
g_signal_new ("mute-stream", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GstPlayBaseBinClass, mute_stream),
NULL, NULL, gst_marshal_VOID__OBJECT_POINTER, G_TYPE_NONE, 2,
G_TYPE_OBJECT, G_TYPE_BOOLEAN);
gst_play_base_bin_signals[LINK_STREAM_SIGNAL] =
g_signal_new ("link-stream", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GstPlayBaseBinClass, link_stream),
NULL, NULL, gst_marshal_VOID__OBJECT_POINTER, G_TYPE_NONE, 2,
G_TYPE_OBJECT, GST_TYPE_PAD);
gst_play_base_bin_signals[UNLINK_STREAM_SIGNAL] =
g_signal_new ("unlink-stream", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstPlayBaseBinClass, unlink_stream),
NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 1, G_TYPE_OBJECT);
gobject_klass->dispose = GST_DEBUG_FUNCPTR (gst_play_base_bin_dispose);
gstelement_klass->change_state =
GST_DEBUG_FUNCPTR (gst_play_base_bin_change_state);
gstbin_klass->add_element = GST_DEBUG_FUNCPTR (gst_play_base_bin_add_element);
gstbin_klass->remove_element =
GST_DEBUG_FUNCPTR (gst_play_base_bin_remove_element);
klass->mute_stream = gst_play_base_bin_mute_stream;
klass->link_stream = gst_play_base_bin_link_stream;
klass->unlink_stream = gst_play_base_bin_unlink_stream;
}
static void
gst_play_base_bin_init (GstPlayBaseBin * play_base_bin)
{
play_base_bin->uri = NULL;
play_base_bin->threaded = FALSE;
play_base_bin->need_rebuild = TRUE;
play_base_bin->source = NULL;
play_base_bin->decoder = NULL;
play_base_bin->preroll_lock = g_mutex_new ();
play_base_bin->preroll_cond = g_cond_new ();
play_base_bin->preroll_elems = NULL;
play_base_bin->queue_size = DEFAULT_QUEUE_SIZE;
GST_FLAG_SET (play_base_bin, GST_BIN_SELF_SCHEDULABLE);
}
static void
gst_play_base_bin_dispose (GObject * object)
{
GstPlayBaseBin *play_base_bin;
play_base_bin = GST_PLAY_BASE_BIN (object);
g_free (play_base_bin->uri);
if (G_OBJECT_CLASS (parent_class)->dispose) {
G_OBJECT_CLASS (parent_class)->dispose (object);
}
}
static void
queue_overrun (GstElement * element, GstPlayBaseBin * play_base_bin)
{
g_mutex_lock (play_base_bin->preroll_lock);
g_cond_signal (play_base_bin->preroll_cond);
g_mutex_unlock (play_base_bin->preroll_lock);
}
static GstElement *
gen_preroll_element (GstPlayBaseBin * play_base_bin, GstPad * pad)
{
GstElement *element;
gchar *name;
name = g_strdup_printf ("preroll_%s", gst_pad_get_name (pad));
element = gst_element_factory_make ("queue", name);
g_object_set (G_OBJECT (element), "max-size-buffers", 0, NULL);
g_object_set (G_OBJECT (element), "max-size-bytes", 0, NULL);
g_object_set (G_OBJECT (element), "max-size-time", 3 * GST_SECOND, NULL);
g_signal_connect (G_OBJECT (element), "overrun",
G_CALLBACK (queue_overrun), play_base_bin);
g_free (name);
return element;
}
static void
remove_prerolls (GstPlayBaseBin * play_base_bin)
{
GList *prerolls, *infos;
for (prerolls = play_base_bin->preroll_elems; prerolls;
prerolls = g_list_next (prerolls)) {
GstElement *element = GST_ELEMENT (prerolls->data);
GST_LOG ("removing preroll element %s", gst_element_get_name (element));
gst_bin_remove (GST_BIN (play_base_bin->thread), element);
}
g_list_free (play_base_bin->preroll_elems);
play_base_bin->preroll_elems = NULL;
for (infos = play_base_bin->streaminfo; infos; infos = g_list_next (infos)) {
GstStreamInfo *info = GST_STREAM_INFO (infos->data);
g_object_unref (info);
}
g_list_free (play_base_bin->streaminfo);
play_base_bin->streaminfo = NULL;
play_base_bin->nstreams = 0;
}
static void
unknown_type (GstElement * element, GstCaps * caps,
GstPlayBaseBin * play_base_bin)
{
gchar *capsstr = gst_caps_to_string (caps);
g_warning ("don't know how to handle %s", capsstr);
g_free (capsstr);
}
static void
no_more_pads (GstElement * element, GstPlayBaseBin * play_base_bin)
{
GST_DEBUG ("no more pads\n");
g_mutex_lock (play_base_bin->preroll_lock);
g_cond_signal (play_base_bin->preroll_cond);
g_mutex_unlock (play_base_bin->preroll_lock);
}
static void
new_stream (GstElement * element, GstPad * pad, gboolean last,
GstPlayBaseBin * play_base_bin)
{
GstStructure *structure;
const gchar *mimetype;
GstCaps *caps;
GstElement *new_element = NULL;
GstStreamInfo *info;
GstStreamType type;
GstPad *srcpad;
GST_DEBUG ("play base: new stream\n");
caps = gst_pad_get_caps (pad);
if (gst_caps_is_empty (caps)) {
g_warning ("no type on pad %s:%s\n", GST_DEBUG_PAD_NAME (pad));
return;
}
structure = gst_caps_get_structure (caps, 0);
mimetype = gst_structure_get_name (structure);
play_base_bin->nstreams++;
if (g_str_has_prefix (mimetype, "audio/")) {
type = GST_STREAM_TYPE_AUDIO;
} else if (g_str_has_prefix (mimetype, "video/")) {
type = GST_STREAM_TYPE_VIDEO;
} else {
type = GST_STREAM_TYPE_UNKNOWN;
}
if (last) {
srcpad = pad;
no_more_pads (NULL, play_base_bin);
} else {
new_element = gen_preroll_element (play_base_bin, pad);
srcpad = gst_element_get_pad (new_element, "src");
gst_bin_add (GST_BIN (play_base_bin->thread), new_element);
play_base_bin->threaded = TRUE;
play_base_bin->preroll_elems =
g_list_prepend (play_base_bin->preroll_elems, new_element);
gst_pad_link (pad, gst_element_get_pad (new_element, "sink"));
gst_element_sync_state_with_parent (new_element);
}
info = gst_stream_info_new (srcpad, type, NULL);
play_base_bin->streaminfo = g_list_append (play_base_bin->streaminfo, info);
}
static gboolean
setup_source (GstPlayBaseBin * play_base_bin)
{
GstElement *old_src;
if (!play_base_bin->need_rebuild)
return TRUE;
old_src = play_base_bin->source;
play_base_bin->source =
gst_element_make_from_uri (GST_URI_SRC, play_base_bin->uri, "source");
if (!play_base_bin->source) {
g_warning ("don't know how to read %s", play_base_bin->uri);
play_base_bin->source = old_src;
return FALSE;
} else {
if (old_src) {
GST_LOG ("removing old src element %s", gst_element_get_name (old_src));
gst_bin_remove (GST_BIN (play_base_bin->thread), old_src);
}
gst_bin_add (GST_BIN (play_base_bin->thread), play_base_bin->source);
}
{
gboolean res;
gint sig1, sig2, sig3;
GstElement *old_dec;
old_dec = play_base_bin->decoder;
play_base_bin->decoder = gst_element_factory_make ("decodebin", "decoder");
if (!play_base_bin->decoder) {
g_warning ("can't find decoder element");
play_base_bin->decoder = old_dec;
return FALSE;
} else {
if (old_dec) {
GST_LOG ("removing old decoder element %s",
gst_element_get_name (old_dec));
gst_bin_remove (GST_BIN (play_base_bin->thread), old_dec);
}
gst_bin_add (GST_BIN (play_base_bin->thread), play_base_bin->decoder);
}
remove_prerolls (play_base_bin);
res =
gst_element_link_pads (play_base_bin->source, "src",
play_base_bin->decoder, "sink");
if (!res) {
g_warning ("can't link source to typefind element");
return FALSE;
}
sig1 = g_signal_connect (G_OBJECT (play_base_bin->decoder), "new_stream",
G_CALLBACK (new_stream), play_base_bin);
sig2 = g_signal_connect (G_OBJECT (play_base_bin->decoder), "no-more-pads",
G_CALLBACK (no_more_pads), play_base_bin);
sig3 = g_signal_connect (G_OBJECT (play_base_bin->decoder), "unknown-type",
G_CALLBACK (unknown_type), play_base_bin);
/* either when the queues are filled or when the decoder element has no more
* dynamic streams, the cond is unlocked. We can remove the signal handlers then
*/
g_mutex_lock (play_base_bin->preroll_lock);
gst_element_set_state (play_base_bin->thread, GST_STATE_PLAYING);
g_cond_wait (play_base_bin->preroll_cond, play_base_bin->preroll_lock);
g_mutex_unlock (play_base_bin->preroll_lock);
g_signal_handler_disconnect (G_OBJECT (play_base_bin->decoder), sig3);
g_signal_handler_disconnect (G_OBJECT (play_base_bin->decoder), sig2);
g_signal_handler_disconnect (G_OBJECT (play_base_bin->decoder), sig1);
play_base_bin->need_rebuild = FALSE;
}
return TRUE;
}
static void
gst_play_base_bin_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstPlayBaseBin *play_base_bin;
g_return_if_fail (GST_IS_PLAY_BASE_BIN (object));
play_base_bin = GST_PLAY_BASE_BIN (object);
switch (prop_id) {
case ARG_URI:
{
const gchar *uri = g_value_get_string (value);
if (uri == NULL) {
g_warning ("cannot set NULL uri");
return;
}
if (!play_base_bin->uri || !strcmp (play_base_bin->uri, uri)) {
g_free (play_base_bin->uri);
play_base_bin->uri = g_strdup (uri);
play_base_bin->need_rebuild = TRUE;
}
break;
}
case ARG_QUEUE_SIZE:
play_base_bin->queue_size = g_value_get_uint64 (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_play_base_bin_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstPlayBaseBin *play_base_bin;
g_return_if_fail (GST_IS_PLAY_BASE_BIN (object));
play_base_bin = GST_PLAY_BASE_BIN (object);
switch (prop_id) {
case ARG_URI:
g_value_set_string (value, play_base_bin->uri);
break;
case ARG_NSTREAMS:
g_value_set_int (value, play_base_bin->nstreams);
break;
case ARG_QUEUE_SIZE:
g_value_set_uint64 (value, play_base_bin->queue_size);
break;
case ARG_STREAMINFO:
g_value_set_pointer (value, play_base_bin->streaminfo);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
play_base_eos (GstBin * bin, GstPlayBaseBin * play_base_bin)
{
no_more_pads (GST_ELEMENT (bin), play_base_bin);
gst_element_set_eos (GST_ELEMENT (play_base_bin));
}
static GstElementStateReturn
gst_play_base_bin_change_state (GstElement * element)
{
GstElementStateReturn ret = GST_STATE_SUCCESS;
GstPlayBaseBin *play_base_bin;
play_base_bin = GST_PLAY_BASE_BIN (element);
switch (GST_STATE_TRANSITION (element)) {
case GST_STATE_NULL_TO_READY:
{
GstScheduler *sched;
play_base_bin->thread = gst_thread_new ("internal_thread");
sched = gst_scheduler_factory_make ("opt", play_base_bin->thread);
if (sched) {
gst_element_set_scheduler (play_base_bin->thread, sched);
gst_object_set_parent (GST_OBJECT (play_base_bin->thread),
GST_OBJECT (play_base_bin));
gst_element_set_state (play_base_bin->thread, GST_STATE_READY);
g_signal_connect (G_OBJECT (play_base_bin->thread), "eos",
G_CALLBACK (play_base_eos), play_base_bin);
} else {
g_warning ("could not get 'opt' scheduler");
gst_object_unref (GST_OBJECT (play_base_bin->thread));
play_base_bin->thread = NULL;
ret = GST_STATE_FAILURE;
}
break;
}
case GST_STATE_READY_TO_PAUSED:
{
if (!setup_source (play_base_bin)) {
GST_ELEMENT_ERROR (GST_ELEMENT (play_base_bin), LIBRARY, TOO_LAZY,
(NULL), ("cannot handle uri \"%s\"", play_base_bin->uri));
ret = GST_STATE_FAILURE;
} else {
ret = gst_element_set_state (play_base_bin->thread, GST_STATE_PAUSED);
}
break;
}
case GST_STATE_PAUSED_TO_PLAYING:
ret = gst_element_set_state (play_base_bin->thread, GST_STATE_PLAYING);
break;
case GST_STATE_PLAYING_TO_PAUSED:
ret = gst_element_set_state (play_base_bin->thread, GST_STATE_PAUSED);
break;
case GST_STATE_PAUSED_TO_READY:
ret = gst_element_set_state (play_base_bin->thread, GST_STATE_READY);
play_base_bin->need_rebuild = TRUE;
break;
case GST_STATE_READY_TO_NULL:
gst_object_unref (GST_OBJECT (play_base_bin->thread));
break;
default:
break;
}
if (ret == GST_STATE_SUCCESS) {
return GST_ELEMENT_CLASS (parent_class)->change_state (element);
}
return ret;
}
static void
gst_play_base_bin_add_element (GstBin * bin, GstElement * element)
{
GstPlayBaseBin *play_base_bin;
play_base_bin = GST_PLAY_BASE_BIN (bin);
if (play_base_bin->thread) {
GstScheduler *sched;
GstClock *clock;
if (play_base_bin->threaded) {
gchar *name;
GstElement *thread;
name = g_strdup_printf ("thread_%s", gst_element_get_name (element));
thread = gst_thread_new (name);
g_free (name);
gst_bin_add (GST_BIN (thread), element);
element = thread;
}
gst_bin_add (GST_BIN (play_base_bin->thread), element);
sched = gst_element_get_scheduler (GST_ELEMENT (play_base_bin->thread));
clock = gst_scheduler_get_clock (sched);
gst_scheduler_set_clock (sched, clock);
//gst_element_sync_state_with_parent (element);
} else {
g_warning ("adding elements is not allowed in NULL");
}
}
static void
gst_play_base_bin_remove_element (GstBin * bin, GstElement * element)
{
GstPlayBaseBin *play_base_bin;
play_base_bin = GST_PLAY_BASE_BIN (bin);
if (play_base_bin->thread) {
if (play_base_bin->threaded) {
gchar *name;
GstElement *thread;
name = g_strdup_printf ("thread_%s", gst_element_get_name (element));
thread = gst_bin_get_by_name (GST_BIN (play_base_bin->thread), name);
g_free (name);
if (!thread) {
g_warning ("cannot find element to remove");
} else {
element = thread;
}
}
GST_LOG ("removing element %s", gst_element_get_name (element));
gst_bin_remove (GST_BIN (play_base_bin->thread), element);
} else {
g_warning ("removing elements is not allowed in NULL");
}
}
void
gst_play_base_bin_mute_stream (GstPlayBaseBin * play_base_bin,
GstStreamInfo * info, gboolean mute)
{
GST_DEBUG ("mute\n");
}
void
gst_play_base_bin_link_stream (GstPlayBaseBin * play_base_bin,
GstStreamInfo * info, GstPad * pad)
{
if (info == NULL) {
GList *streams;
for (streams = play_base_bin->streaminfo; streams;
streams = g_list_next (streams)) {
GstStreamInfo *sinfo = (GstStreamInfo *) streams->data;
if (gst_pad_is_linked (sinfo->pad))
continue;
if (gst_pad_can_link (sinfo->pad, pad)) {
info = sinfo;
break;
}
}
}
if (info) {
if (!gst_pad_link (info->pad, pad)) {
GST_DEBUG ("could not link\n");
gst_play_base_bin_mute_stream (play_base_bin, info, TRUE);
}
} else {
GST_DEBUG ("could not find pad to link\n");
}
}
void
gst_play_base_bin_unlink_stream (GstPlayBaseBin * play_base_bin,
GstStreamInfo * info)
{
GST_DEBUG ("unlink\n");
}
const GList *
gst_play_base_bin_get_streaminfo (GstPlayBaseBin * play_base_bin)
{
return play_base_bin->streaminfo;
}