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gstreamer/gst/multifile/gstsplitmuxsink.c

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/* GStreamer Muxer bin that splits output stream by size/time
* Copyright (C) <2014> Jan Schmidt <jan@centricular.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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/**
* SECTION:element-splitmuxsink
* @short_description: Muxer wrapper for splitting output stream by size or time
*
* This element wraps a muxer and a sink, and starts a new file when the mux
* contents are about to cross a threshold of maximum size of maximum time,
* splitting at video keyframe boundaries. Exactly one input video stream
* can be muxed, with as many accompanying audio and subtitle streams as
* desired.
*
* By default, it uses mp4mux and filesink, but they can be changed via
* the 'muxer' and 'sink' properties.
*
* The minimum file size is 1 GOP, however - so limits may be overrun if the
* distance between any 2 keyframes is larger than the limits.
*
* If a video stream is available, the splitting process is driven by the video
* stream contents, and the video stream must contain closed GOPs for the output
* file parts to be played individually correctly. In the absence of a video
* stream, the first available stream is used as reference for synchronization.
*
* <refsect2>
* <title>Example pipelines</title>
* |[
* gst-launch-1.0 -e v4l2src num-buffers=500 ! video/x-raw,width=320,height=240 ! videoconvert ! queue ! timeoverlay ! x264enc key-int-max=10 ! h264parse ! splitmuxsink location=video%02d.mov max-size-time=10000000000 max-size-bytes=1000000
* ]|
* Records a video stream captured from a v4l2 device and muxes it into
* ISO mp4 files, splitting as needed to limit size/duration to 10 seconds
* and 1MB maximum size.
* </refsect2>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
#include <glib/gstdio.h>
#include "gstsplitmuxsink.h"
GST_DEBUG_CATEGORY_STATIC (splitmux_debug);
#define GST_CAT_DEFAULT splitmux_debug
#define GST_SPLITMUX_LOCK(s) g_mutex_lock(&(s)->lock)
#define GST_SPLITMUX_UNLOCK(s) g_mutex_unlock(&(s)->lock)
#define GST_SPLITMUX_WAIT(s) g_cond_wait (&(s)->data_cond, &(s)->lock)
#define GST_SPLITMUX_BROADCAST(s) g_cond_broadcast (&(s)->data_cond)
enum
{
PROP_0,
PROP_LOCATION,
PROP_MAX_SIZE_TIME,
PROP_MAX_SIZE_BYTES,
PROP_MAX_FILES,
PROP_MUXER_OVERHEAD,
PROP_MUXER,
PROP_SINK
};
#define DEFAULT_MAX_SIZE_TIME 0
#define DEFAULT_MAX_SIZE_BYTES 0
#define DEFAULT_MAX_FILES 0
#define DEFAULT_MUXER_OVERHEAD 0.02
#define DEFAULT_MUXER "mp4mux"
#define DEFAULT_SINK "filesink"
enum
{
SIGNAL_FORMAT_LOCATION,
SIGNAL_LAST
};
static guint signals[SIGNAL_LAST];
static GstStaticPadTemplate video_sink_template =
GST_STATIC_PAD_TEMPLATE ("video",
GST_PAD_SINK,
GST_PAD_REQUEST,
GST_STATIC_CAPS_ANY);
static GstStaticPadTemplate audio_sink_template =
GST_STATIC_PAD_TEMPLATE ("audio_%u",
GST_PAD_SINK,
GST_PAD_REQUEST,
GST_STATIC_CAPS_ANY);
static GstStaticPadTemplate subtitle_sink_template =
GST_STATIC_PAD_TEMPLATE ("subtitle_%u",
GST_PAD_SINK,
GST_PAD_REQUEST,
GST_STATIC_CAPS_ANY);
static GQuark PAD_CONTEXT;
static void
_do_init (void)
{
PAD_CONTEXT = g_quark_from_static_string ("pad-context");
}
#define gst_splitmux_sink_parent_class parent_class
G_DEFINE_TYPE_EXTENDED (GstSplitMuxSink, gst_splitmux_sink, GST_TYPE_BIN, 0,
_do_init ());
static gboolean create_elements (GstSplitMuxSink * splitmux);
static gboolean create_sink (GstSplitMuxSink * splitmux);
static void gst_splitmux_sink_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_splitmux_sink_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static void gst_splitmux_sink_dispose (GObject * object);
static void gst_splitmux_sink_finalize (GObject * object);
static GstPad *gst_splitmux_sink_request_new_pad (GstElement * element,
GstPadTemplate * templ, const gchar * name, const GstCaps * caps);
static void gst_splitmux_sink_release_pad (GstElement * element, GstPad * pad);
static GstStateChangeReturn gst_splitmux_sink_change_state (GstElement *
element, GstStateChange transition);
static void bus_handler (GstBin * bin, GstMessage * msg);
static void set_next_filename (GstSplitMuxSink * splitmux);
static void start_next_fragment (GstSplitMuxSink * splitmux);
static void check_queue_length (GstSplitMuxSink * splitmux, MqStreamCtx * ctx);
static void mq_stream_ctx_unref (MqStreamCtx * ctx);
static void gst_splitmux_sink_ensure_max_files (GstSplitMuxSink * splitmux);
static MqStreamBuf *
mq_stream_buf_new (void)
{
return g_slice_new0 (MqStreamBuf);
}
static void
mq_stream_buf_free (MqStreamBuf * data)
{
g_slice_free (MqStreamBuf, data);
}
static void
gst_splitmux_sink_class_init (GstSplitMuxSinkClass * klass)
{
GObjectClass *gobject_class = (GObjectClass *) klass;
GstElementClass *gstelement_class = (GstElementClass *) klass;
GstBinClass *gstbin_class = (GstBinClass *) klass;
gobject_class->set_property = gst_splitmux_sink_set_property;
gobject_class->get_property = gst_splitmux_sink_get_property;
gobject_class->dispose = gst_splitmux_sink_dispose;
gobject_class->finalize = gst_splitmux_sink_finalize;
gst_element_class_set_static_metadata (gstelement_class,
"Split Muxing Bin", "Generic/Bin/Muxer",
"Convenience bin that muxes incoming streams into multiple time/size limited files",
"Jan Schmidt <jan@centricular.com>");
gst_element_class_add_static_pad_template (gstelement_class,
&video_sink_template);
gst_element_class_add_static_pad_template (gstelement_class,
&audio_sink_template);
gst_element_class_add_static_pad_template (gstelement_class,
&subtitle_sink_template);
gstelement_class->change_state =
GST_DEBUG_FUNCPTR (gst_splitmux_sink_change_state);
gstelement_class->request_new_pad =
GST_DEBUG_FUNCPTR (gst_splitmux_sink_request_new_pad);
gstelement_class->release_pad =
GST_DEBUG_FUNCPTR (gst_splitmux_sink_release_pad);
gstbin_class->handle_message = bus_handler;
g_object_class_install_property (gobject_class, PROP_LOCATION,
g_param_spec_string ("location", "File Output Pattern",
"Format string pattern for the location of the files to write (e.g. video%05d.mp4)",
NULL, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_MUXER_OVERHEAD,
g_param_spec_double ("mux-overhead", "Muxing Overhead",
"Extra size overhead of muxing (0.02 = 2%)", 0.0, 1.0,
DEFAULT_MUXER_OVERHEAD,
G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_MAX_SIZE_TIME,
g_param_spec_uint64 ("max-size-time", "Max. size (ns)",
"Max. amount of time per file (in ns, 0=disable)", 0, G_MAXUINT64,
DEFAULT_MAX_SIZE_TIME, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_MAX_SIZE_BYTES,
g_param_spec_uint64 ("max-size-bytes", "Max. size bytes",
"Max. amount of data per file (in bytes, 0=disable)", 0, G_MAXUINT64,
DEFAULT_MAX_SIZE_BYTES, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_MAX_FILES,
g_param_spec_uint ("max-files", "Max files",
"Maximum number of files to keep on disk. Once the maximum is reached,"
"old files start to be deleted to make room for new ones.",
0, G_MAXUINT, DEFAULT_MAX_FILES,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_MUXER,
g_param_spec_object ("muxer", "Muxer",
"The muxer element to use (NULL = default mp4mux)",
GST_TYPE_ELEMENT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_SINK,
g_param_spec_object ("sink", "Sink",
"The sink element (or element chain) to use (NULL = default filesink)",
GST_TYPE_ELEMENT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/**
* GstSplitMuxSink::format-location:
* @splitmux: the #GstSplitMuxSink
* @fragment_id: the sequence number of the file to be created
*
* Returns: the location to be used for the next output file
*/
signals[SIGNAL_FORMAT_LOCATION] =
g_signal_new ("format-location", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST, 0, NULL, NULL, NULL, G_TYPE_STRING, 1, G_TYPE_UINT);
}
static void
gst_splitmux_sink_init (GstSplitMuxSink * splitmux)
{
g_mutex_init (&splitmux->lock);
g_cond_init (&splitmux->data_cond);
splitmux->mux_overhead = DEFAULT_MUXER_OVERHEAD;
splitmux->threshold_time = DEFAULT_MAX_SIZE_TIME;
splitmux->threshold_bytes = DEFAULT_MAX_SIZE_BYTES;
splitmux->max_files = DEFAULT_MAX_FILES;
GST_OBJECT_FLAG_SET (splitmux, GST_ELEMENT_FLAG_SINK);
}
static void
gst_splitmux_reset (GstSplitMuxSink * splitmux)
{
if (splitmux->mq)
gst_bin_remove (GST_BIN (splitmux), splitmux->mq);
if (splitmux->muxer)
gst_bin_remove (GST_BIN (splitmux), splitmux->muxer);
if (splitmux->active_sink)
gst_bin_remove (GST_BIN (splitmux), splitmux->active_sink);
splitmux->sink = splitmux->active_sink = splitmux->muxer = splitmux->mq =
NULL;
}
static void
gst_splitmux_sink_dispose (GObject * object)
{
GstSplitMuxSink *splitmux = GST_SPLITMUX_SINK (object);
G_OBJECT_CLASS (parent_class)->dispose (object);
/* Calling parent dispose invalidates all child pointers */
splitmux->sink = splitmux->active_sink = splitmux->muxer = splitmux->mq =
NULL;
}
static void
gst_splitmux_sink_finalize (GObject * object)
{
GstSplitMuxSink *splitmux = GST_SPLITMUX_SINK (object);
g_cond_clear (&splitmux->data_cond);
g_mutex_clear (&splitmux->lock);
if (splitmux->provided_sink)
gst_object_unref (splitmux->provided_sink);
if (splitmux->provided_muxer)
gst_object_unref (splitmux->provided_muxer);
g_free (splitmux->location);
/* Make sure to free any un-released contexts */
g_list_foreach (splitmux->contexts, (GFunc) mq_stream_ctx_unref, NULL);
g_list_free (splitmux->contexts);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gst_splitmux_sink_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstSplitMuxSink *splitmux = GST_SPLITMUX_SINK (object);
switch (prop_id) {
case PROP_LOCATION:{
GST_OBJECT_LOCK (splitmux);
g_free (splitmux->location);
splitmux->location = g_value_dup_string (value);
GST_OBJECT_UNLOCK (splitmux);
break;
}
case PROP_MAX_SIZE_BYTES:
GST_OBJECT_LOCK (splitmux);
splitmux->threshold_bytes = g_value_get_uint64 (value);
GST_OBJECT_UNLOCK (splitmux);
break;
case PROP_MAX_SIZE_TIME:
GST_OBJECT_LOCK (splitmux);
splitmux->threshold_time = g_value_get_uint64 (value);
GST_OBJECT_UNLOCK (splitmux);
break;
case PROP_MAX_FILES:
GST_OBJECT_LOCK (splitmux);
splitmux->max_files = g_value_get_uint (value);
GST_OBJECT_UNLOCK (splitmux);
break;
case PROP_MUXER_OVERHEAD:
GST_OBJECT_LOCK (splitmux);
splitmux->mux_overhead = g_value_get_double (value);
GST_OBJECT_UNLOCK (splitmux);
break;
case PROP_SINK:
GST_OBJECT_LOCK (splitmux);
if (splitmux->provided_sink)
gst_object_unref (splitmux->provided_sink);
splitmux->provided_sink = g_value_dup_object (value);
GST_OBJECT_UNLOCK (splitmux);
break;
case PROP_MUXER:
GST_OBJECT_LOCK (splitmux);
if (splitmux->provided_muxer)
gst_object_unref (splitmux->provided_muxer);
splitmux->provided_muxer = g_value_dup_object (value);
GST_OBJECT_UNLOCK (splitmux);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_splitmux_sink_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstSplitMuxSink *splitmux = GST_SPLITMUX_SINK (object);
switch (prop_id) {
case PROP_LOCATION:
GST_OBJECT_LOCK (splitmux);
g_value_set_string (value, splitmux->location);
GST_OBJECT_UNLOCK (splitmux);
break;
case PROP_MAX_SIZE_BYTES:
GST_OBJECT_LOCK (splitmux);
g_value_set_uint64 (value, splitmux->threshold_bytes);
GST_OBJECT_UNLOCK (splitmux);
break;
case PROP_MAX_SIZE_TIME:
GST_OBJECT_LOCK (splitmux);
g_value_set_uint64 (value, splitmux->threshold_time);
GST_OBJECT_UNLOCK (splitmux);
break;
case PROP_MAX_FILES:
GST_OBJECT_LOCK (splitmux);
g_value_set_uint (value, splitmux->max_files);
GST_OBJECT_UNLOCK (splitmux);
break;
case PROP_MUXER_OVERHEAD:
GST_OBJECT_LOCK (splitmux);
g_value_set_double (value, splitmux->mux_overhead);
GST_OBJECT_UNLOCK (splitmux);
break;
case PROP_SINK:
GST_OBJECT_LOCK (splitmux);
g_value_set_object (value, splitmux->provided_sink);
GST_OBJECT_UNLOCK (splitmux);
break;
case PROP_MUXER:
GST_OBJECT_LOCK (splitmux);
g_value_set_object (value, splitmux->provided_muxer);
GST_OBJECT_UNLOCK (splitmux);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GstPad *
mq_sink_to_src (GstElement * mq, GstPad * sink_pad)
{
gchar *tmp, *sinkname, *srcname;
GstPad *mq_src;
sinkname = gst_pad_get_name (sink_pad);
tmp = sinkname + 5;
srcname = g_strdup_printf ("src_%s", tmp);
mq_src = gst_element_get_static_pad (mq, srcname);
g_free (sinkname);
g_free (srcname);
return mq_src;
}
static gboolean
get_pads_from_mq (GstSplitMuxSink * splitmux, GstPad ** sink_pad,
GstPad ** src_pad)
{
GstPad *mq_sink;
GstPad *mq_src;
/* Request a pad from multiqueue, then connect this one, then
* discover the corresponding output pad and return both */
mq_sink = gst_element_get_request_pad (splitmux->mq, "sink_%u");
if (mq_sink == NULL)
return FALSE;
mq_src = mq_sink_to_src (splitmux->mq, mq_sink);
if (mq_src == NULL)
goto fail;
*sink_pad = mq_sink;
*src_pad = mq_src;
return TRUE;
fail:
gst_element_release_request_pad (splitmux->mq, mq_sink);
return FALSE;
}
static MqStreamCtx *
mq_stream_ctx_new (GstSplitMuxSink * splitmux)
{
MqStreamCtx *ctx;
ctx = g_new0 (MqStreamCtx, 1);
g_atomic_int_set (&ctx->refcount, 1);
ctx->splitmux = splitmux;
gst_segment_init (&ctx->in_segment, GST_FORMAT_UNDEFINED);
gst_segment_init (&ctx->out_segment, GST_FORMAT_UNDEFINED);
ctx->in_running_time = ctx->out_running_time = 0;
g_queue_init (&ctx->queued_bufs);
return ctx;
}
static void
mq_stream_ctx_free (MqStreamCtx * ctx)
{
g_queue_foreach (&ctx->queued_bufs, (GFunc) mq_stream_buf_free, NULL);
g_queue_clear (&ctx->queued_bufs);
g_free (ctx);
}
static void
mq_stream_ctx_unref (MqStreamCtx * ctx)
{
if (g_atomic_int_dec_and_test (&ctx->refcount))
mq_stream_ctx_free (ctx);
}
static void
mq_stream_ctx_ref (MqStreamCtx * ctx)
{
g_atomic_int_inc (&ctx->refcount);
}
static void
_pad_block_destroy_sink_notify (MqStreamCtx * ctx)
{
ctx->sink_pad_block_id = 0;
mq_stream_ctx_unref (ctx);
}
static void
_pad_block_destroy_src_notify (MqStreamCtx * ctx)
{
ctx->src_pad_block_id = 0;
mq_stream_ctx_unref (ctx);
}
static void
send_fragment_opened_closed_msg (GstSplitMuxSink * splitmux, gboolean opened)
{
gchar *location = NULL;
GstMessage *msg;
const gchar *msg_name = opened ?
"splitmuxsink-fragment-opened" : "splitmuxsink-fragment-closed";
g_object_get (splitmux->sink, "location", &location, NULL);
msg = gst_message_new_element (GST_OBJECT (splitmux),
gst_structure_new (msg_name,
"location", G_TYPE_STRING, location,
"running-time", GST_TYPE_CLOCK_TIME,
splitmux->reference_ctx->out_running_time, NULL));
gst_element_post_message (GST_ELEMENT_CAST (splitmux), msg);
g_free (location);
}
/* Called with lock held, drops the lock to send EOS to the
* pad
*/
static void
send_eos (GstSplitMuxSink * splitmux, MqStreamCtx * ctx)
{
GstEvent *eos;
GstPad *pad;
eos = gst_event_new_eos ();
pad = gst_pad_get_peer (ctx->srcpad);
ctx->out_eos = TRUE;
GST_INFO_OBJECT (splitmux, "Sending EOS on %" GST_PTR_FORMAT, pad);
GST_SPLITMUX_UNLOCK (splitmux);
gst_pad_send_event (pad, eos);
GST_SPLITMUX_LOCK (splitmux);
gst_object_unref (pad);
}
/* Called with splitmux lock held to check if this output
* context needs to sleep to wait for the release of the
* next GOP, or to send EOS to close out the current file
*/
static void
complete_or_wait_on_out (GstSplitMuxSink * splitmux, MqStreamCtx * ctx)
{
do {
GST_LOG_OBJECT (ctx->srcpad,
"Checking running time %" GST_TIME_FORMAT " against max %"
GST_TIME_FORMAT, GST_TIME_ARGS (ctx->out_running_time),
GST_TIME_ARGS (splitmux->max_out_running_time));
if (splitmux->max_out_running_time == GST_CLOCK_TIME_NONE ||
ctx->out_running_time < splitmux->max_out_running_time) {
splitmux->have_muxed_something = TRUE;
return;
}
if (ctx->flushing || splitmux->state == SPLITMUX_STATE_STOPPED)
return;
if (splitmux->state == SPLITMUX_STATE_ENDING_FILE) {
if (ctx->out_eos == FALSE) {
send_eos (splitmux, ctx);
continue;
}
} else if (splitmux->state == SPLITMUX_STATE_START_NEXT_FRAGMENT) {
start_next_fragment (splitmux);
continue;
}
GST_INFO_OBJECT (ctx->srcpad,
"Sleeping for running time %"
GST_TIME_FORMAT " (max %" GST_TIME_FORMAT ")",
GST_TIME_ARGS (ctx->out_running_time),
GST_TIME_ARGS (splitmux->max_out_running_time));
ctx->out_blocked = TRUE;
/* Expand the mq if needed before sleeping */
check_queue_length (splitmux, ctx);
GST_SPLITMUX_WAIT (splitmux);
ctx->out_blocked = FALSE;
GST_INFO_OBJECT (ctx->srcpad,
"Woken for new max running time %" GST_TIME_FORMAT,
GST_TIME_ARGS (splitmux->max_out_running_time));
} while (1);
}
static GstPadProbeReturn
handle_mq_output (GstPad * pad, GstPadProbeInfo * info, MqStreamCtx * ctx)
{
GstSplitMuxSink *splitmux = ctx->splitmux;
MqStreamBuf *buf_info = NULL;
GST_LOG_OBJECT (pad, "Fired probe type 0x%x\n", info->type);
/* FIXME: Handle buffer lists, until then make it clear they won't work */
if (info->type & GST_PAD_PROBE_TYPE_BUFFER_LIST) {
g_warning ("Buffer list handling not implemented");
return GST_PAD_PROBE_DROP;
}
if (info->type & GST_PAD_PROBE_TYPE_EVENT_DOWNSTREAM) {
GstEvent *event = gst_pad_probe_info_get_event (info);
GST_LOG_OBJECT (pad, "Event %" GST_PTR_FORMAT, event);
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_SEGMENT:
gst_event_copy_segment (event, &ctx->out_segment);
break;
case GST_EVENT_FLUSH_STOP:
GST_SPLITMUX_LOCK (splitmux);
gst_segment_init (&ctx->out_segment, GST_FORMAT_UNDEFINED);
g_queue_foreach (&ctx->queued_bufs, (GFunc) mq_stream_buf_free, NULL);
g_queue_clear (&ctx->queued_bufs);
ctx->flushing = FALSE;
GST_SPLITMUX_UNLOCK (splitmux);
break;
case GST_EVENT_FLUSH_START:
GST_SPLITMUX_LOCK (splitmux);
GST_LOG_OBJECT (pad, "Flush start");
ctx->flushing = TRUE;
GST_SPLITMUX_BROADCAST (splitmux);
GST_SPLITMUX_UNLOCK (splitmux);
break;
case GST_EVENT_EOS:
GST_SPLITMUX_LOCK (splitmux);
if (splitmux->state == SPLITMUX_STATE_STOPPED)
goto beach;
ctx->out_eos = TRUE;
GST_SPLITMUX_UNLOCK (splitmux);
break;
case GST_EVENT_GAP:{
GstClockTime gap_ts;
gst_event_parse_gap (event, &gap_ts, NULL);
if (gap_ts == GST_CLOCK_TIME_NONE)
break;
GST_SPLITMUX_LOCK (splitmux);
gap_ts = gst_segment_to_running_time (&ctx->out_segment,
GST_FORMAT_TIME, gap_ts);
GST_LOG_OBJECT (pad, "Have GAP w/ ts %" GST_TIME_FORMAT,
GST_TIME_ARGS (gap_ts));
if (splitmux->state == SPLITMUX_STATE_STOPPED)
goto beach;
ctx->out_running_time = gap_ts;
complete_or_wait_on_out (splitmux, ctx);
GST_SPLITMUX_UNLOCK (splitmux);
break;
}
case GST_EVENT_CUSTOM_DOWNSTREAM:{
const GstStructure *s;
GstClockTime ts = 0;
s = gst_event_get_structure (event);
if (!gst_structure_has_name (s, "splitmuxsink-unblock"))
break;
gst_structure_get_uint64 (s, "timestamp", &ts);
GST_SPLITMUX_LOCK (splitmux);
if (splitmux->state == SPLITMUX_STATE_STOPPED)
goto beach;
ctx->out_running_time = ts;
complete_or_wait_on_out (splitmux, ctx);
GST_SPLITMUX_UNLOCK (splitmux);
return GST_PAD_PROBE_DROP;
}
default:
break;
}
return GST_PAD_PROBE_PASS;
}
/* Allow everything through until the configured next stopping point */
GST_SPLITMUX_LOCK (splitmux);
buf_info = g_queue_pop_tail (&ctx->queued_bufs);
if (buf_info == NULL)
/* Can only happen due to a poorly timed flush */
goto beach;
/* If we have popped a keyframe, decrement the queued_gop count */
if (buf_info->keyframe && splitmux->queued_gops > 0)
splitmux->queued_gops--;
ctx->out_running_time = buf_info->run_ts;
GST_LOG_OBJECT (splitmux,
"Pad %" GST_PTR_FORMAT " buffer with TS %" GST_TIME_FORMAT
" size %" G_GSIZE_FORMAT,
pad, GST_TIME_ARGS (ctx->out_running_time), buf_info->buf_size);
if (splitmux->opening_first_fragment) {
send_fragment_opened_closed_msg (splitmux, TRUE);
splitmux->opening_first_fragment = FALSE;
}
complete_or_wait_on_out (splitmux, ctx);
if (splitmux->muxed_out_time == GST_CLOCK_TIME_NONE ||
splitmux->muxed_out_time < buf_info->run_ts)
splitmux->muxed_out_time = buf_info->run_ts;
splitmux->muxed_out_bytes += buf_info->buf_size;
#ifndef GST_DISABLE_GST_DEBUG
{
GstBuffer *buf = gst_pad_probe_info_get_buffer (info);
GST_LOG_OBJECT (pad, "Returning to pass buffer %" GST_PTR_FORMAT
" run ts %" GST_TIME_FORMAT, buf,
GST_TIME_ARGS (ctx->out_running_time));
}
#endif
GST_SPLITMUX_UNLOCK (splitmux);
mq_stream_buf_free (buf_info);
return GST_PAD_PROBE_PASS;
beach:
GST_SPLITMUX_UNLOCK (splitmux);
return GST_PAD_PROBE_DROP;
}
static gboolean
resend_sticky (GstPad * pad, GstEvent ** event, GstPad * peer)
{
return gst_pad_send_event (peer, gst_event_ref (*event));
}
static void
restart_context (MqStreamCtx * ctx, GstSplitMuxSink * splitmux)
{
GstPad *peer = gst_pad_get_peer (ctx->srcpad);
gst_pad_sticky_events_foreach (ctx->srcpad,
(GstPadStickyEventsForeachFunction) (resend_sticky), peer);
/* Clear EOS flag if not actually EOS */
ctx->out_eos = GST_PAD_IS_EOS (ctx->srcpad);
gst_object_unref (peer);
}
/* Called with lock held when a fragment
* reaches EOS and it is time to restart
* a new fragment
*/
static void
start_next_fragment (GstSplitMuxSink * splitmux)
{
/* 1 change to new file */
gst_element_set_state (splitmux->muxer, GST_STATE_NULL);
gst_element_set_state (splitmux->active_sink, GST_STATE_NULL);
set_next_filename (splitmux);
gst_element_sync_state_with_parent (splitmux->active_sink);
gst_element_sync_state_with_parent (splitmux->muxer);
g_list_foreach (splitmux->contexts, (GFunc) restart_context, splitmux);
/* Switch state and go back to processing */
if (!splitmux->reference_ctx->in_eos) {
splitmux->state = SPLITMUX_STATE_COLLECTING_GOP_START;
splitmux->max_out_running_time = splitmux->reference_ctx->in_running_time;
} else {
splitmux->state = SPLITMUX_STATE_WAITING_GOP_COMPLETE;
splitmux->max_out_running_time = GST_CLOCK_TIME_NONE;
splitmux->have_muxed_something = FALSE;
}
splitmux->have_muxed_something =
(splitmux->reference_ctx->in_running_time > splitmux->muxed_out_time);
/* Store the overflow parameters as the basis for the next fragment */
splitmux->mux_start_time = splitmux->muxed_out_time;
splitmux->mux_start_bytes = splitmux->muxed_out_bytes;
GST_DEBUG_OBJECT (splitmux,
"Restarting flow for new fragment. New running time %" GST_TIME_FORMAT,
GST_TIME_ARGS (splitmux->max_out_running_time));
send_fragment_opened_closed_msg (splitmux, TRUE);
GST_SPLITMUX_BROADCAST (splitmux);
}
static void
bus_handler (GstBin * bin, GstMessage * message)
{
GstSplitMuxSink *splitmux = GST_SPLITMUX_SINK (bin);
switch (GST_MESSAGE_TYPE (message)) {
case GST_MESSAGE_EOS:
/* If the state is draining out the current file, drop this EOS */
GST_SPLITMUX_LOCK (splitmux);
send_fragment_opened_closed_msg (splitmux, FALSE);
if (splitmux->state == SPLITMUX_STATE_ENDING_FILE &&
splitmux->max_out_running_time != GST_CLOCK_TIME_NONE) {
GST_DEBUG_OBJECT (splitmux, "Caught EOS at end of fragment, dropping");
splitmux->state = SPLITMUX_STATE_START_NEXT_FRAGMENT;
GST_SPLITMUX_BROADCAST (splitmux);
gst_message_unref (message);
GST_SPLITMUX_UNLOCK (splitmux);
return;
}
GST_SPLITMUX_UNLOCK (splitmux);
break;
default:
break;
}
GST_BIN_CLASS (parent_class)->handle_message (bin, message);
}
/* Called with splitmux lock held */
/* Called when entering ProcessingCompleteGop state
* Assess if mq contents overflowed the current file
* -> If yes, need to switch to new file
* -> if no, set max_out_running_time to let this GOP in and
* go to COLLECTING_GOP_START state
*/
static void
handle_gathered_gop (GstSplitMuxSink * splitmux)
{
GList *cur;
gsize queued_bytes = 0;
GstClockTime queued_time = 0;
gboolean at_eos = TRUE;
/* Assess if the multiqueue contents overflowed the current file */
for (cur = g_list_first (splitmux->contexts);
cur != NULL; cur = g_list_next (cur)) {
MqStreamCtx *tmpctx = (MqStreamCtx *) (cur->data);
if (tmpctx->in_running_time > queued_time)
queued_time = tmpctx->in_running_time;
queued_bytes += tmpctx->in_bytes;
at_eos &= tmpctx->in_eos;
}
g_assert (queued_bytes >= splitmux->mux_start_bytes);
g_assert (queued_time >= splitmux->mux_start_time);
queued_bytes -= splitmux->mux_start_bytes;
queued_time -= splitmux->mux_start_time;
/* Expand queued bytes estimate by muxer overhead */
queued_bytes += (queued_bytes * splitmux->mux_overhead);
GST_LOG_OBJECT (splitmux, "mq at TS %" GST_TIME_FORMAT
" bytes %" G_GSIZE_FORMAT, GST_TIME_ARGS (queued_time), queued_bytes);
/* Check for overrun - have we output at least one byte and overrun
* either threshold? */
if ((splitmux->have_muxed_something &&
((splitmux->threshold_bytes > 0 &&
queued_bytes >= splitmux->threshold_bytes) ||
(splitmux->threshold_time > 0 &&
queued_time >= splitmux->threshold_time))) || at_eos) {
splitmux->state = SPLITMUX_STATE_ENDING_FILE;
GST_INFO_OBJECT (splitmux,
"mq overflowed since last, draining out. max out TS is %"
GST_TIME_FORMAT, GST_TIME_ARGS (splitmux->max_out_running_time));
GST_SPLITMUX_BROADCAST (splitmux);
} else {
/* No overflow */
GST_LOG_OBJECT (splitmux,
"This GOP didn't overflow the fragment. Bytes sent %" G_GSIZE_FORMAT
" queued %" G_GSIZE_FORMAT " time %" GST_TIME_FORMAT " Continuing.",
splitmux->muxed_out_bytes - splitmux->mux_start_bytes,
queued_bytes, GST_TIME_ARGS (queued_time));
/* Wake everyone up to push this one GOP, then sleep */
splitmux->have_muxed_something = TRUE;
if (!splitmux->reference_ctx->in_eos) {
splitmux->state = SPLITMUX_STATE_COLLECTING_GOP_START;
splitmux->max_out_running_time = splitmux->reference_ctx->in_running_time;
} else {
splitmux->state = SPLITMUX_STATE_WAITING_GOP_COMPLETE;
splitmux->max_out_running_time = GST_CLOCK_TIME_NONE;
}
GST_LOG_OBJECT (splitmux, "Waking output for complete GOP, TS %"
GST_TIME_FORMAT, GST_TIME_ARGS (splitmux->max_out_running_time));
GST_SPLITMUX_BROADCAST (splitmux);
}
}
/* Called with splitmux lock held */
/* Called from each input pad when it is has all the pieces
* for a GOP or EOS, starting with the reference pad which has set the
* splitmux->max_in_running_time
*/
static void
check_completed_gop (GstSplitMuxSink * splitmux, MqStreamCtx * ctx)
{
GList *cur;
gboolean ready = TRUE;
GstClockTime current_max_in_running_time;
if (splitmux->state == SPLITMUX_STATE_WAITING_GOP_COMPLETE) {
/* Iterate each pad, and check that the input running time is at least
* up to the reference running time, and if so handle the collected GOP */
GST_LOG_OBJECT (splitmux, "Checking GOP collected, Max in running time %"
GST_TIME_FORMAT " ctx %p",
GST_TIME_ARGS (splitmux->max_in_running_time), ctx);
for (cur = g_list_first (splitmux->contexts); cur != NULL;
cur = g_list_next (cur)) {
MqStreamCtx *tmpctx = (MqStreamCtx *) (cur->data);
GST_LOG_OBJECT (splitmux,
"Context %p (src pad %" GST_PTR_FORMAT ") TS %" GST_TIME_FORMAT
" EOS %d", tmpctx, tmpctx->srcpad,
GST_TIME_ARGS (tmpctx->in_running_time), tmpctx->in_eos);
if (splitmux->max_in_running_time != GST_CLOCK_TIME_NONE &&
tmpctx->in_running_time < splitmux->max_in_running_time &&
!tmpctx->in_eos) {
GST_LOG_OBJECT (splitmux,
"Context %p (src pad %" GST_PTR_FORMAT ") not ready. We'll sleep",
tmpctx, tmpctx->srcpad);
ready = FALSE;
break;
}
}
if (ready) {
GST_DEBUG_OBJECT (splitmux,
"Collected GOP is complete. Processing (ctx %p)", ctx);
/* All pads have a complete GOP, release it into the multiqueue */
handle_gathered_gop (splitmux);
}
}
/* Some pad is not yet ready, or GOP is being pushed
* either way, sleep and wait to get woken */
current_max_in_running_time = splitmux->max_in_running_time;
while ((splitmux->state == SPLITMUX_STATE_WAITING_GOP_COMPLETE ||
splitmux->state == SPLITMUX_STATE_START_NEXT_FRAGMENT) &&
!ctx->flushing &&
(current_max_in_running_time == splitmux->max_in_running_time)) {
GST_LOG_OBJECT (splitmux, "Sleeping for %s (ctx %p)",
splitmux->state == SPLITMUX_STATE_WAITING_GOP_COMPLETE ?
"GOP complete" : "EOF draining", ctx);
GST_SPLITMUX_WAIT (splitmux);
GST_LOG_OBJECT (splitmux, "Done waiting for complete GOP (ctx %p)", ctx);
}
}
static void
check_queue_length (GstSplitMuxSink * splitmux, MqStreamCtx * ctx)
{
GList *cur;
guint cur_len = g_queue_get_length (&ctx->queued_bufs);
GST_DEBUG_OBJECT (ctx->sinkpad,
"Checking queue length len %u cur_max %u queued gops %u",
cur_len, splitmux->mq_max_buffers, splitmux->queued_gops);
if (cur_len >= splitmux->mq_max_buffers) {
gboolean allow_grow = FALSE;
/* If collecting a GOP and this pad might block,
* and there isn't already a pending GOP in the queue
* then grow
*/
if (splitmux->state == SPLITMUX_STATE_WAITING_GOP_COMPLETE &&
ctx->in_running_time < splitmux->max_in_running_time &&
splitmux->queued_gops <= 1) {
allow_grow = TRUE;
} else if (splitmux->state == SPLITMUX_STATE_COLLECTING_GOP_START &&
ctx->is_reference && splitmux->queued_gops <= 1) {
allow_grow = TRUE;
}
if (!allow_grow) {
for (cur = g_list_first (splitmux->contexts);
cur != NULL; cur = g_list_next (cur)) {
MqStreamCtx *tmpctx = (MqStreamCtx *) (cur->data);
GST_DEBUG_OBJECT (tmpctx->sinkpad,
" len %u out_blocked %d",
g_queue_get_length (&tmpctx->queued_bufs), tmpctx->out_blocked);
/* If another stream is starving, grow */
if (tmpctx != ctx && g_queue_get_length (&tmpctx->queued_bufs) < 1) {
allow_grow = TRUE;
}
}
}
if (allow_grow) {
splitmux->mq_max_buffers = cur_len + 1;
GST_INFO_OBJECT (splitmux,
"Multiqueue overrun - enlarging to %u buffers ctx %p",
splitmux->mq_max_buffers, ctx);
g_object_set (splitmux->mq, "max-size-buffers",
splitmux->mq_max_buffers, NULL);
}
}
}
static GstPadProbeReturn
handle_mq_input (GstPad * pad, GstPadProbeInfo * info, MqStreamCtx * ctx)
{
GstSplitMuxSink *splitmux = ctx->splitmux;
GstBuffer *buf;
MqStreamBuf *buf_info = NULL;
GstClockTime ts;
gboolean loop_again;
gboolean keyframe = FALSE;
GST_LOG_OBJECT (pad, "Fired probe type 0x%x", info->type);
/* FIXME: Handle buffer lists, until then make it clear they won't work */
if (info->type & GST_PAD_PROBE_TYPE_BUFFER_LIST) {
g_warning ("Buffer list handling not implemented");
return GST_PAD_PROBE_DROP;
}
if (info->type & GST_PAD_PROBE_TYPE_EVENT_DOWNSTREAM) {
GstEvent *event = gst_pad_probe_info_get_event (info);
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_SEGMENT:
gst_event_copy_segment (event, &ctx->in_segment);
break;
case GST_EVENT_FLUSH_STOP:
GST_SPLITMUX_LOCK (splitmux);
gst_segment_init (&ctx->in_segment, GST_FORMAT_UNDEFINED);
ctx->in_eos = FALSE;
ctx->in_bytes = 0;
ctx->in_running_time = 0;
GST_SPLITMUX_UNLOCK (splitmux);
break;
case GST_EVENT_EOS:
GST_SPLITMUX_LOCK (splitmux);
ctx->in_eos = TRUE;
if (splitmux->state == SPLITMUX_STATE_STOPPED)
goto beach;
if (ctx->is_reference) {
GST_INFO_OBJECT (splitmux, "Got Reference EOS. Finishing up");
/* Act as if this is a new keyframe with infinite timestamp */
splitmux->max_in_running_time = GST_CLOCK_TIME_NONE;
splitmux->state = SPLITMUX_STATE_WAITING_GOP_COMPLETE;
/* Wake up other input pads to collect this GOP */
GST_SPLITMUX_BROADCAST (splitmux);
check_completed_gop (splitmux, ctx);
} else if (splitmux->state == SPLITMUX_STATE_WAITING_GOP_COMPLETE) {
/* If we are waiting for a GOP to be completed (ie, for aux
* pads to catch up), then this pad is complete, so check
* if the whole GOP is.
*/
check_completed_gop (splitmux, ctx);
}
GST_SPLITMUX_UNLOCK (splitmux);
break;
default:
break;
}
return GST_PAD_PROBE_PASS;
}
buf = gst_pad_probe_info_get_buffer (info);
buf_info = mq_stream_buf_new ();
if (GST_BUFFER_PTS_IS_VALID (buf))
ts = GST_BUFFER_PTS (buf);
else
ts = GST_BUFFER_DTS (buf);
GST_SPLITMUX_LOCK (splitmux);
if (splitmux->state == SPLITMUX_STATE_STOPPED)
goto beach;
/* If this buffer has a timestamp, advance the input timestamp of the
* stream */
if (GST_CLOCK_TIME_IS_VALID (ts)) {
GstClockTime running_time =
gst_segment_to_running_time (&ctx->in_segment, GST_FORMAT_TIME,
GST_BUFFER_TIMESTAMP (buf));
if (GST_CLOCK_TIME_IS_VALID (running_time) &&
(ctx->in_running_time == GST_CLOCK_TIME_NONE
|| running_time > ctx->in_running_time))
ctx->in_running_time = running_time;
}
/* Try to make sure we have a valid running time */
if (!GST_CLOCK_TIME_IS_VALID (ctx->in_running_time)) {
ctx->in_running_time =
gst_segment_to_running_time (&ctx->in_segment, GST_FORMAT_TIME,
ctx->in_segment.start);
}
buf_info->run_ts = ctx->in_running_time;
buf_info->buf_size = gst_buffer_get_size (buf);
/* Update total input byte counter for overflow detect */
ctx->in_bytes += buf_info->buf_size;
/* initialize mux_start_time */
if (ctx->is_reference && splitmux->mux_start_time == 0)
splitmux->mux_start_time = buf_info->run_ts;
GST_DEBUG_OBJECT (pad, "Buf TS %" GST_TIME_FORMAT
" total in_bytes %" G_GSIZE_FORMAT,
GST_TIME_ARGS (buf_info->run_ts), ctx->in_bytes);
loop_again = TRUE;
do {
if (ctx->flushing)
break;
switch (splitmux->state) {
case SPLITMUX_STATE_COLLECTING_GOP_START:
if (ctx->is_reference) {
/* If a keyframe, we have a complete GOP */
if (GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_DELTA_UNIT) ||
!GST_CLOCK_TIME_IS_VALID (ctx->in_running_time) ||
splitmux->max_in_running_time >= ctx->in_running_time) {
/* Pass this buffer through */
loop_again = FALSE;
break;
}
GST_INFO_OBJECT (pad,
"Have keyframe with running time %" GST_TIME_FORMAT,
GST_TIME_ARGS (ctx->in_running_time));
keyframe = TRUE;
splitmux->state = SPLITMUX_STATE_WAITING_GOP_COMPLETE;
splitmux->max_in_running_time = ctx->in_running_time;
/* Wake up other input pads to collect this GOP */
GST_SPLITMUX_BROADCAST (splitmux);
check_completed_gop (splitmux, ctx);
} else {
/* We're still waiting for a keyframe on the reference pad, sleep */
GST_LOG_OBJECT (pad, "Sleeping for GOP start");
GST_SPLITMUX_WAIT (splitmux);
GST_LOG_OBJECT (pad, "Done sleeping for GOP start state now %d",
splitmux->state);
}
break;
case SPLITMUX_STATE_WAITING_GOP_COMPLETE:
/* After a GOP start is found, this buffer might complete the GOP */
/* If we overran the target timestamp, it might be time to process
* the GOP, otherwise bail out for more data
*/
GST_LOG_OBJECT (pad,
"Checking TS %" GST_TIME_FORMAT " against max %" GST_TIME_FORMAT,
GST_TIME_ARGS (ctx->in_running_time),
GST_TIME_ARGS (splitmux->max_in_running_time));
if (ctx->in_running_time < splitmux->max_in_running_time) {
loop_again = FALSE;
break;
}
GST_LOG_OBJECT (pad,
"Collected last packet of GOP. Checking other pads");
check_completed_gop (splitmux, ctx);
break;
case SPLITMUX_STATE_ENDING_FILE:{
GstEvent *event;
/* If somes streams received no buffer during the last GOP that overran,
* because its next buffer has a timestamp bigger than
* ctx->max_in_running_time, its queue is empty. In that case the only
* way to wakeup the output thread is by injecting an event in the
* queue. This usually happen with subtitle streams.
* See https://bugzilla.gnome.org/show_bug.cgi?id=763711. */
GST_LOG_OBJECT (pad, "Sending splitmuxsink-unblock event");
event = gst_event_new_custom (GST_EVENT_CUSTOM_DOWNSTREAM |
GST_EVENT_TYPE_SERIALIZED,
gst_structure_new ("splitmuxsink-unblock", "timestamp",
G_TYPE_UINT64, splitmux->max_in_running_time, NULL));
gst_pad_send_event (ctx->sinkpad, event);
/* fallthrough */
}
case SPLITMUX_STATE_START_NEXT_FRAGMENT:
/* A fragment is ending, wait until that's done before continuing */
GST_DEBUG_OBJECT (pad, "Sleeping for fragment restart");
GST_SPLITMUX_WAIT (splitmux);
GST_DEBUG_OBJECT (pad,
"Done sleeping for fragment restart state now %d", splitmux->state);
break;
default:
loop_again = FALSE;
break;
}
} while (loop_again);
if (keyframe) {
splitmux->queued_gops++;
buf_info->keyframe = TRUE;
}
/* Now add this buffer to the queue just before returning */
g_queue_push_head (&ctx->queued_bufs, buf_info);
/* Check the buffer will fit in the mq */
check_queue_length (splitmux, ctx);
GST_LOG_OBJECT (pad, "Returning to queue buffer %" GST_PTR_FORMAT
" run ts %" GST_TIME_FORMAT, buf, GST_TIME_ARGS (ctx->in_running_time));
GST_SPLITMUX_UNLOCK (splitmux);
return GST_PAD_PROBE_PASS;
beach:
GST_SPLITMUX_UNLOCK (splitmux);
if (buf_info)
mq_stream_buf_free (buf_info);
return GST_PAD_PROBE_PASS;
}
static GstPad *
gst_splitmux_sink_request_new_pad (GstElement * element,
GstPadTemplate * templ, const gchar * name, const GstCaps * caps)
{
GstSplitMuxSink *splitmux = (GstSplitMuxSink *) element;
GstPadTemplate *mux_template = NULL;
GstPad *res = NULL;
GstPad *mq_sink, *mq_src;
gchar *gname;
gboolean is_video = FALSE;
MqStreamCtx *ctx;
GST_DEBUG_OBJECT (element, "templ:%s, name:%s", templ->name_template, name);
GST_SPLITMUX_LOCK (splitmux);
if (!create_elements (splitmux))
goto fail;
if (templ->name_template) {
if (g_str_equal (templ->name_template, "video")) {
/* FIXME: Look for a pad template with matching caps, rather than by name */
mux_template =
gst_element_class_get_pad_template (GST_ELEMENT_GET_CLASS
(splitmux->muxer), "video_%u");
is_video = TRUE;
name = NULL;
} else {
mux_template =
gst_element_class_get_pad_template (GST_ELEMENT_GET_CLASS
(splitmux->muxer), templ->name_template);
}
if (mux_template == NULL) {
/* Fallback to find sink pad templates named 'sink_%d' (mpegtsmux) */
mux_template =
gst_element_class_get_pad_template (GST_ELEMENT_GET_CLASS
(splitmux->muxer), "sink_%d");
}
}
res = gst_element_request_pad (splitmux->muxer, mux_template, name, caps);
if (res == NULL)
goto fail;
if (is_video)
gname = g_strdup ("video");
else if (name == NULL)
gname = gst_pad_get_name (res);
else
gname = g_strdup (name);
if (!get_pads_from_mq (splitmux, &mq_sink, &mq_src)) {
gst_element_release_request_pad (splitmux->muxer, res);
gst_object_unref (GST_OBJECT (res));
goto fail;
}
if (gst_pad_link (mq_src, res) != GST_PAD_LINK_OK) {
gst_element_release_request_pad (splitmux->muxer, res);
gst_object_unref (GST_OBJECT (res));
gst_element_release_request_pad (splitmux->mq, mq_sink);
gst_object_unref (GST_OBJECT (mq_sink));
goto fail;
}
gst_object_unref (GST_OBJECT (res));
ctx = mq_stream_ctx_new (splitmux);
ctx->srcpad = mq_src;
ctx->sinkpad = mq_sink;
mq_stream_ctx_ref (ctx);
ctx->src_pad_block_id =
gst_pad_add_probe (mq_src, GST_PAD_PROBE_TYPE_DATA_DOWNSTREAM,
(GstPadProbeCallback) handle_mq_output, ctx, (GDestroyNotify)
_pad_block_destroy_src_notify);
if (is_video && splitmux->reference_ctx != NULL) {
splitmux->reference_ctx->is_reference = FALSE;
splitmux->reference_ctx = NULL;
}
if (splitmux->reference_ctx == NULL) {
splitmux->reference_ctx = ctx;
ctx->is_reference = TRUE;
}
res = gst_ghost_pad_new (gname, mq_sink);
g_object_set_qdata ((GObject *) (res), PAD_CONTEXT, ctx);
mq_stream_ctx_ref (ctx);
ctx->sink_pad_block_id =
gst_pad_add_probe (mq_sink, GST_PAD_PROBE_TYPE_DATA_DOWNSTREAM,
(GstPadProbeCallback) handle_mq_input, ctx, (GDestroyNotify)
_pad_block_destroy_sink_notify);
GST_DEBUG_OBJECT (splitmux, "Request pad %" GST_PTR_FORMAT
" is mq pad %" GST_PTR_FORMAT, res, mq_sink);
splitmux->contexts = g_list_prepend (splitmux->contexts, ctx);
g_free (gname);
gst_object_unref (mq_sink);
gst_object_unref (mq_src);
gst_pad_set_active (res, TRUE);
gst_element_add_pad (element, res);
GST_SPLITMUX_UNLOCK (splitmux);
return res;
fail:
GST_SPLITMUX_UNLOCK (splitmux);
return NULL;
}
static void
gst_splitmux_sink_release_pad (GstElement * element, GstPad * pad)
{
GstSplitMuxSink *splitmux = (GstSplitMuxSink *) element;
GstPad *mqsink, *mqsrc, *muxpad;
MqStreamCtx *ctx =
(MqStreamCtx *) (g_object_get_qdata ((GObject *) (pad), PAD_CONTEXT));
GST_SPLITMUX_LOCK (splitmux);
if (splitmux->muxer == NULL || splitmux->mq == NULL)
goto fail; /* Elements don't exist yet - nothing to release */
GST_INFO_OBJECT (pad, "releasing request pad");
mqsink = gst_ghost_pad_get_target (GST_GHOST_PAD (pad));
mqsrc = mq_sink_to_src (splitmux->mq, mqsink);
muxpad = gst_pad_get_peer (mqsrc);
/* Remove the context from our consideration */
splitmux->contexts = g_list_remove (splitmux->contexts, ctx);
if (ctx->sink_pad_block_id)
gst_pad_remove_probe (ctx->sinkpad, ctx->sink_pad_block_id);
if (ctx->src_pad_block_id)
gst_pad_remove_probe (ctx->srcpad, ctx->src_pad_block_id);
/* Can release the context now */
mq_stream_ctx_unref (ctx);
/* Release and free the mq input */
gst_element_release_request_pad (splitmux->mq, mqsink);
/* Release and free the muxer input */
gst_element_release_request_pad (splitmux->muxer, muxpad);
gst_object_unref (mqsink);
gst_object_unref (mqsrc);
gst_object_unref (muxpad);
gst_element_remove_pad (element, pad);
/* Reset the internal elements only after all request pads are released */
if (splitmux->contexts == NULL)
gst_splitmux_reset (splitmux);
fail:
GST_SPLITMUX_UNLOCK (splitmux);
}
static GstElement *
create_element (GstSplitMuxSink * splitmux,
const gchar * factory, const gchar * name)
{
GstElement *ret = gst_element_factory_make (factory, name);
if (ret == NULL) {
g_warning ("Failed to create %s - splitmuxsink will not work", name);
return NULL;
}
if (!gst_bin_add (GST_BIN (splitmux), ret)) {
g_warning ("Could not add %s element - splitmuxsink will not work", name);
gst_object_unref (ret);
return NULL;
}
return ret;
}
static gboolean
create_elements (GstSplitMuxSink * splitmux)
{
/* Create internal elements */
if (splitmux->mq == NULL) {
if ((splitmux->mq =
create_element (splitmux, "multiqueue", "multiqueue")) == NULL)
goto fail;
splitmux->mq_max_buffers = 5;
/* No bytes or time limit, we limit buffers manually */
g_object_set (splitmux->mq, "max-size-bytes", 0, "max-size-time",
(guint64) 0, "max-size-buffers", splitmux->mq_max_buffers, NULL);
}
if (splitmux->muxer == NULL) {
GstElement *provided_muxer = NULL;
GST_OBJECT_LOCK (splitmux);
if (splitmux->provided_muxer != NULL)
provided_muxer = gst_object_ref (splitmux->provided_muxer);
GST_OBJECT_UNLOCK (splitmux);
if (provided_muxer == NULL) {
if ((splitmux->muxer =
create_element (splitmux, "mp4mux", "muxer")) == NULL)
goto fail;
} else {
if (!gst_bin_add (GST_BIN (splitmux), provided_muxer)) {
g_warning ("Could not add muxer element - splitmuxsink will not work");
gst_object_unref (provided_muxer);
goto fail;
}
splitmux->muxer = provided_muxer;
gst_object_unref (provided_muxer);
}
}
return TRUE;
fail:
return FALSE;
}
static GstElement *
find_sink (GstElement * e)
{
GstElement *res = NULL;
GstIterator *iter;
gboolean done = FALSE;
GValue data = { 0, };
if (!GST_IS_BIN (e))
return e;
iter = gst_bin_iterate_sinks (GST_BIN (e));
while (!done) {
switch (gst_iterator_next (iter, &data)) {
case GST_ITERATOR_OK:
{
GstElement *child = g_value_get_object (&data);
if (g_object_class_find_property (G_OBJECT_GET_CLASS (child),
"location") != NULL) {
res = child;
done = TRUE;
}
g_value_reset (&data);
break;
}
case GST_ITERATOR_RESYNC:
gst_iterator_resync (iter);
break;
case GST_ITERATOR_DONE:
done = TRUE;
break;
case GST_ITERATOR_ERROR:
g_assert_not_reached ();
break;
}
}
g_value_unset (&data);
gst_iterator_free (iter);
return res;
}
static gboolean
create_sink (GstSplitMuxSink * splitmux)
{
GstElement *provided_sink = NULL;
if (splitmux->active_sink == NULL) {
GST_OBJECT_LOCK (splitmux);
if (splitmux->provided_sink != NULL)
provided_sink = gst_object_ref (splitmux->provided_sink);
GST_OBJECT_UNLOCK (splitmux);
if (provided_sink == NULL) {
if ((splitmux->sink =
create_element (splitmux, DEFAULT_SINK, "sink")) == NULL)
goto fail;
splitmux->active_sink = splitmux->sink;
} else {
if (!gst_bin_add (GST_BIN (splitmux), provided_sink)) {
g_warning ("Could not add sink elements - splitmuxsink will not work");
gst_object_unref (provided_sink);
goto fail;
}
splitmux->active_sink = provided_sink;
/* The bin holds a ref now, we can drop our tmp ref */
gst_object_unref (provided_sink);
/* Find the sink element */
splitmux->sink = find_sink (splitmux->active_sink);
if (splitmux->sink == NULL) {
g_warning
("Could not locate sink element in provided sink - splitmuxsink will not work");
goto fail;
}
}
if (!gst_element_link (splitmux->muxer, splitmux->active_sink)) {
g_warning ("Failed to link muxer and sink- splitmuxsink will not work");
goto fail;
}
}
return TRUE;
fail:
return FALSE;
}
#ifdef __GNUC__
#pragma GCC diagnostic ignored "-Wformat-nonliteral"
#endif
static void
set_next_filename (GstSplitMuxSink * splitmux)
{
gchar *fname = NULL;
gst_splitmux_sink_ensure_max_files (splitmux);
g_signal_emit (splitmux, signals[SIGNAL_FORMAT_LOCATION], 0,
splitmux->fragment_id, &fname);
if (!fname)
fname = splitmux->location ?
g_strdup_printf (splitmux->location, splitmux->fragment_id) : NULL;
if (fname) {
GST_INFO_OBJECT (splitmux, "Setting file to %s", fname);
g_object_set (splitmux->sink, "location", fname, NULL);
g_free (fname);
splitmux->fragment_id++;
}
}
static GstStateChangeReturn
gst_splitmux_sink_change_state (GstElement * element, GstStateChange transition)
{
GstStateChangeReturn ret;
GstSplitMuxSink *splitmux = (GstSplitMuxSink *) element;
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:{
GST_SPLITMUX_LOCK (splitmux);
if (!create_elements (splitmux) || !create_sink (splitmux)) {
ret = GST_STATE_CHANGE_FAILURE;
GST_SPLITMUX_UNLOCK (splitmux);
goto beach;
}
GST_SPLITMUX_UNLOCK (splitmux);
splitmux->fragment_id = 0;
set_next_filename (splitmux);
break;
}
case GST_STATE_CHANGE_READY_TO_PAUSED:{
GST_SPLITMUX_LOCK (splitmux);
/* Start by collecting one input on each pad */
splitmux->state = SPLITMUX_STATE_COLLECTING_GOP_START;
splitmux->max_in_running_time = 0;
splitmux->muxed_out_time = splitmux->mux_start_time = 0;
splitmux->muxed_out_bytes = splitmux->mux_start_bytes = 0;
splitmux->opening_first_fragment = TRUE;
GST_SPLITMUX_UNLOCK (splitmux);
break;
}
case GST_STATE_CHANGE_PAUSED_TO_READY:
case GST_STATE_CHANGE_READY_TO_NULL:
GST_SPLITMUX_LOCK (splitmux);
splitmux->state = SPLITMUX_STATE_STOPPED;
/* Wake up any blocked threads */
GST_LOG_OBJECT (splitmux,
"State change -> NULL or READY. Waking threads");
GST_SPLITMUX_BROADCAST (splitmux);
GST_SPLITMUX_UNLOCK (splitmux);
break;
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
if (ret == GST_STATE_CHANGE_FAILURE)
goto beach;
switch (transition) {
case GST_STATE_CHANGE_READY_TO_NULL:
GST_SPLITMUX_LOCK (splitmux);
splitmux->fragment_id = 0;
/* Reset internal elements only if no pad contexts are using them */
if (splitmux->contexts == NULL)
gst_splitmux_reset (splitmux);
GST_SPLITMUX_UNLOCK (splitmux);
break;
default:
break;
}
beach:
if (transition == GST_STATE_CHANGE_NULL_TO_READY &&
ret == GST_STATE_CHANGE_FAILURE) {
/* Cleanup elements on failed transition out of NULL */
gst_splitmux_reset (splitmux);
}
return ret;
}
gboolean
register_splitmuxsink (GstPlugin * plugin)
{
GST_DEBUG_CATEGORY_INIT (splitmux_debug, "splitmuxsink", 0,
"Split File Muxing Sink");
return gst_element_register (plugin, "splitmuxsink", GST_RANK_NONE,
GST_TYPE_SPLITMUX_SINK);
}
static void
gst_splitmux_sink_ensure_max_files (GstSplitMuxSink * splitmux)
{
if (splitmux->max_files && splitmux->fragment_id >= splitmux->max_files) {
splitmux->fragment_id = 0;
}
}
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