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gstreamer/gst/multifile/gstsplitmuxsrc.c
Jan Schmidt 7c0a9cb585 splitmuxsrc: Fix reverse playback 
Fix the check for whether the start time of the segment has
been reached when playing in reverse. Otherwise, playback
stops after reaching the start of any file part, instead of
continuing until all parts within the segment have played
2017-03-04 00:35:32 +11:00

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/* GStreamer Split Demuxer bin that recombines files created by
* the splitmuxsink element.
*
* 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-splitmuxsrc
* @short_description: Split Demuxer bin that recombines files created by
* the splitmuxsink element.
*
* This element reads a set of input files created by the splitmuxsink element
* containing contiguous elementary streams split across multiple files.
*
* This element is similar to splitfilesrc, except that it recombines the
* streams in each file part at the demuxed elementary level, rather than
* as a single larger bytestream.
*
* <refsect2>
* <title>Example pipelines</title>
* |[
* gst-launch-1.0 splitmuxsrc location=video*.mov ! decodebin ! xvimagesink
* ]| Demux each file part and output the video stream as one continuous stream
* |[
* gst-launch-1.0 playbin uri="splitmux://path/to/foo.mp4.*"
* ]| Play back a set of files created by splitmuxsink
* </refsect2>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
#include "gstsplitmuxsrc.h"
#include "gstsplitutils.h"
#include "../../gst-libs/gst/gst-i18n-plugin.h"
GST_DEBUG_CATEGORY (splitmux_debug);
#define GST_CAT_DEFAULT splitmux_debug
enum
{
PROP_0,
PROP_LOCATION
};
enum
{
SIGNAL_FORMAT_LOCATION,
SIGNAL_LAST
};
static guint signals[SIGNAL_LAST];
static GstStaticPadTemplate video_src_template =
GST_STATIC_PAD_TEMPLATE ("video",
GST_PAD_SRC,
GST_PAD_SOMETIMES,
GST_STATIC_CAPS_ANY);
static GstStaticPadTemplate audio_src_template =
GST_STATIC_PAD_TEMPLATE ("audio_%u",
GST_PAD_SRC,
GST_PAD_SOMETIMES,
GST_STATIC_CAPS_ANY);
static GstStaticPadTemplate subtitle_src_template =
GST_STATIC_PAD_TEMPLATE ("subtitle_%u",
GST_PAD_SRC,
GST_PAD_SOMETIMES,
GST_STATIC_CAPS_ANY);
static GstStateChangeReturn gst_splitmux_src_change_state (GstElement *
element, GstStateChange transition);
static void gst_splitmux_src_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_splitmux_src_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static void gst_splitmux_src_dispose (GObject * object);
static void gst_splitmux_src_finalize (GObject * object);
static gboolean gst_splitmux_src_start (GstSplitMuxSrc * splitmux);
static gboolean gst_splitmux_src_stop (GstSplitMuxSrc * splitmux);
static void splitmux_src_pad_constructed (GObject * pad);
static gboolean splitmux_src_pad_event (GstPad * pad, GstObject * parent,
GstEvent * event);
static gboolean splitmux_src_pad_query (GstPad * pad, GstObject * parent,
GstQuery * query);
static void splitmux_src_uri_handler_init (gpointer g_iface,
gpointer iface_data);
static GstPad *gst_splitmux_find_output_pad (GstSplitMuxPartReader * part,
GstPad * pad, GstSplitMuxSrc * splitmux);
static void gst_splitmux_part_prepared (GstSplitMuxPartReader * reader,
GstSplitMuxSrc * splitmux);
static gboolean gst_splitmux_end_of_part (GstSplitMuxSrc * splitmux,
SplitMuxSrcPad * pad);
static gboolean gst_splitmux_check_new_caps (SplitMuxSrcPad * splitpad,
GstEvent * event);
#define _do_init \
G_IMPLEMENT_INTERFACE(GST_TYPE_URI_HANDLER, splitmux_src_uri_handler_init);
#define gst_splitmux_src_parent_class parent_class
G_DEFINE_TYPE_EXTENDED (GstSplitMuxSrc, gst_splitmux_src, GST_TYPE_BIN, 0,
_do_init);
static GstURIType
splitmux_src_uri_get_type (GType type)
{
return GST_URI_SRC;
}
static const gchar *const *
splitmux_src_uri_get_protocols (GType type)
{
static const gchar *protocols[] = { "splitmux", NULL };
return protocols;
}
static gchar *
splitmux_src_uri_get_uri (GstURIHandler * handler)
{
GstSplitMuxSrc *splitmux = GST_SPLITMUX_SRC (handler);
gchar *ret = NULL;
GST_OBJECT_LOCK (splitmux);
if (splitmux->location)
ret = g_strdup_printf ("splitmux://%s", splitmux->location);
GST_OBJECT_UNLOCK (splitmux);
return ret;
}
static gboolean
splitmux_src_uri_set_uri (GstURIHandler * handler, const gchar * uri,
GError ** err)
{
GstSplitMuxSrc *splitmux = GST_SPLITMUX_SRC (handler);
gchar *protocol, *location;
protocol = gst_uri_get_protocol (uri);
if (protocol == NULL || !g_str_equal (protocol, "splitmux"))
goto wrong_uri;
g_free (protocol);
location = gst_uri_get_location (uri);
GST_OBJECT_LOCK (splitmux);
g_free (splitmux->location);
splitmux->location = location;
GST_OBJECT_UNLOCK (splitmux);
return TRUE;
wrong_uri:
g_free (protocol);
GST_ELEMENT_ERROR (splitmux, RESOURCE, READ, (NULL),
("Error parsing uri %s", uri));
g_set_error_literal (err, GST_URI_ERROR, GST_URI_ERROR_BAD_URI,
"Could not parse splitmux URI");
return FALSE;
}
static void
splitmux_src_uri_handler_init (gpointer g_iface, gpointer iface_data)
{
GstURIHandlerInterface *iface = (GstURIHandlerInterface *) (g_iface);
iface->get_type = splitmux_src_uri_get_type;
iface->get_protocols = splitmux_src_uri_get_protocols;
iface->set_uri = splitmux_src_uri_set_uri;
iface->get_uri = splitmux_src_uri_get_uri;
}
static void
gst_splitmux_src_class_init (GstSplitMuxSrcClass * klass)
{
GObjectClass *gobject_class = (GObjectClass *) klass;
GstElementClass *gstelement_class = (GstElementClass *) klass;
gobject_class->set_property = gst_splitmux_src_set_property;
gobject_class->get_property = gst_splitmux_src_get_property;
gobject_class->dispose = gst_splitmux_src_dispose;
gobject_class->finalize = gst_splitmux_src_finalize;
gst_element_class_set_static_metadata (gstelement_class,
"Split File Demuxing Bin", "Generic/Bin/Demuxer",
"Source that reads a set of files created by splitmuxsink",
"Jan Schmidt <jan@centricular.com>");
gst_element_class_add_static_pad_template (gstelement_class,
&video_src_template);
gst_element_class_add_static_pad_template (gstelement_class,
&audio_src_template);
gst_element_class_add_static_pad_template (gstelement_class,
&subtitle_src_template);
gstelement_class->change_state =
GST_DEBUG_FUNCPTR (gst_splitmux_src_change_state);
g_object_class_install_property (gobject_class, PROP_LOCATION,
g_param_spec_string ("location", "File Input Pattern",
"Glob pattern for the location of the files to read", NULL,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/**
* GstSplitMuxSrc::format-location:
* @splitmux: the #GstSplitMuxSrc
*
* Returns: A NULL-terminated sorted array of strings containing the
* filenames of the input files. The array will be freed internally
* using g_strfreev()
*
* Since: 1.8
*/
signals[SIGNAL_FORMAT_LOCATION] =
g_signal_new ("format-location", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST, 0, NULL, NULL, NULL, G_TYPE_STRV, 0);
}
static void
gst_splitmux_src_init (GstSplitMuxSrc * splitmux)
{
g_mutex_init (&splitmux->lock);
g_mutex_init (&splitmux->pads_lock);
splitmux->total_duration = GST_CLOCK_TIME_NONE;
gst_segment_init (&splitmux->play_segment, GST_FORMAT_TIME);
}
static void
gst_splitmux_src_dispose (GObject * object)
{
GstSplitMuxSrc *splitmux = GST_SPLITMUX_SRC (object);
GList *cur;
SPLITMUX_SRC_PADS_LOCK (splitmux);
for (cur = g_list_first (splitmux->pads);
cur != NULL; cur = g_list_next (cur)) {
GstPad *pad = GST_PAD (cur->data);
gst_element_remove_pad (GST_ELEMENT (splitmux), pad);
}
g_list_free (splitmux->pads);
splitmux->pads = NULL;
SPLITMUX_SRC_PADS_UNLOCK (splitmux);
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static void
gst_splitmux_src_finalize (GObject * object)
{
GstSplitMuxSrc *splitmux = GST_SPLITMUX_SRC (object);
g_mutex_clear (&splitmux->lock);
g_mutex_clear (&splitmux->pads_lock);
g_free (splitmux->location);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gst_splitmux_src_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstSplitMuxSrc *splitmux = GST_SPLITMUX_SRC (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;
}
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_splitmux_src_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstSplitMuxSrc *splitmux = GST_SPLITMUX_SRC (object);
switch (prop_id) {
case PROP_LOCATION:
GST_OBJECT_LOCK (splitmux);
g_value_set_string (value, splitmux->location);
GST_OBJECT_UNLOCK (splitmux);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GstStateChangeReturn
gst_splitmux_src_change_state (GstElement * element, GstStateChange transition)
{
GstStateChangeReturn ret;
GstSplitMuxSrc *splitmux = (GstSplitMuxSrc *) element;
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:{
break;
}
case GST_STATE_CHANGE_READY_TO_PAUSED:{
if (!gst_splitmux_src_start (splitmux))
return GST_STATE_CHANGE_FAILURE;
break;
}
case GST_STATE_CHANGE_PAUSED_TO_READY:
case GST_STATE_CHANGE_READY_TO_NULL:
/* Make sure the element will shut down */
if (!gst_splitmux_src_stop (splitmux))
return GST_STATE_CHANGE_FAILURE;
break;
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
return ret;
}
static GstSplitMuxPartReader *
gst_splitmux_part_create (GstSplitMuxSrc * splitmux, char *filename)
{
GstSplitMuxPartReader *r;
r = g_object_new (GST_TYPE_SPLITMUX_PART_READER, NULL);
g_signal_connect (r, "prepared", (GCallback) gst_splitmux_part_prepared,
splitmux);
gst_splitmux_part_reader_set_callbacks (r, splitmux,
(GstSplitMuxPartReaderPadCb) gst_splitmux_find_output_pad);
gst_splitmux_part_reader_set_location (r, filename);
return r;
}
static gboolean
gst_splitmux_check_new_caps (SplitMuxSrcPad * splitpad, GstEvent * event)
{
GstCaps *curcaps = gst_pad_get_current_caps ((GstPad *) (splitpad));
GstCaps *newcaps;
GstCaps *tmpcaps;
GstCaps *tmpcurcaps;
GstStructure *s;
gboolean res = TRUE;
gst_event_parse_caps (event, &newcaps);
GST_LOG_OBJECT (splitpad, "Comparing caps %" GST_PTR_FORMAT
" and %" GST_PTR_FORMAT, curcaps, newcaps);
if (curcaps == NULL)
return TRUE;
/* If caps are exactly equal exit early */
if (gst_caps_is_equal (curcaps, newcaps)) {
gst_caps_unref (curcaps);
return FALSE;
}
/* More extensive check, ignore changes in framerate, because
* demuxers get that wrong */
tmpcaps = gst_caps_copy (newcaps);
s = gst_caps_get_structure (tmpcaps, 0);
gst_structure_remove_field (s, "framerate");
tmpcurcaps = gst_caps_copy (curcaps);
gst_caps_unref (curcaps);
s = gst_caps_get_structure (tmpcurcaps, 0);
gst_structure_remove_field (s, "framerate");
/* Now check if these filtered caps are equal */
if (gst_caps_is_equal (tmpcurcaps, tmpcaps)) {
GST_INFO_OBJECT (splitpad, "Ignoring framerate-only caps change");
res = FALSE;
}
gst_caps_unref (tmpcaps);
gst_caps_unref (tmpcurcaps);
return res;
}
static void
gst_splitmux_handle_event (GstSplitMuxSrc * splitmux,
SplitMuxSrcPad * splitpad, GstPad * part_pad, GstEvent * event)
{
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_STREAM_START:{
if (splitpad->sent_stream_start)
goto drop_event;
splitpad->sent_stream_start = TRUE;
break;
}
case GST_EVENT_EOS:{
if (gst_splitmux_end_of_part (splitmux, splitpad))
// Continuing to next part, drop the EOS
goto drop_event;
if (splitmux->segment_seqnum)
gst_event_set_seqnum (event, splitmux->segment_seqnum);
break;
}
case GST_EVENT_SEGMENT:{
GstSegment seg;
gst_event_copy_segment (event, &seg);
splitpad->segment.position = seg.position;
if (splitpad->sent_segment)
goto drop_event; /* We already forwarded a segment event */
/* Calculate output segment */
GST_LOG_OBJECT (splitpad, "Pad seg %" GST_SEGMENT_FORMAT
" got seg %" GST_SEGMENT_FORMAT
" play seg %" GST_SEGMENT_FORMAT,
&splitpad->segment, &seg, &splitmux->play_segment);
/* If playing forward, take the stop time from the overall
* seg or play_segment */
if (splitmux->play_segment.rate > 0.0) {
if (splitmux->play_segment.stop != -1)
seg.stop = splitmux->play_segment.stop;
else
seg.stop = splitpad->segment.stop;
} else {
/* Reverse playback from stop time to start time */
/* See if an end point was requested in the seek */
if (splitmux->play_segment.start != -1) {
seg.start = splitmux->play_segment.start;
seg.time = splitmux->play_segment.time;
} else {
seg.start = splitpad->segment.start;
seg.time = splitpad->segment.time;
}
}
GST_INFO_OBJECT (splitpad,
"Forwarding segment %" GST_SEGMENT_FORMAT, &seg);
gst_event_unref (event);
event = gst_event_new_segment (&seg);
if (splitmux->segment_seqnum)
gst_event_set_seqnum (event, splitmux->segment_seqnum);
splitpad->sent_segment = TRUE;
break;
}
case GST_EVENT_CAPS:{
if (!gst_splitmux_check_new_caps (splitpad, event))
goto drop_event;
splitpad->sent_caps = TRUE;
break;
}
default:
break;
}
gst_pad_push_event ((GstPad *) (splitpad), event);
return;
drop_event:
gst_event_unref (event);
return;
}
static GstFlowReturn
gst_splitmux_handle_buffer (GstSplitMuxSrc * splitmux,
SplitMuxSrcPad * splitpad, GstBuffer * buf)
{
GstFlowReturn ret;
if (splitpad->clear_next_discont) {
GST_LOG_OBJECT (splitpad, "Clearing discont flag on buffer");
GST_BUFFER_FLAG_UNSET (buf, GST_BUFFER_FLAG_DISCONT);
splitpad->clear_next_discont = FALSE;
}
if (splitpad->set_next_discont) {
GST_LOG_OBJECT (splitpad, "Setting discont flag on buffer");
GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
splitpad->set_next_discont = FALSE;
}
ret = gst_pad_push (GST_PAD_CAST (splitpad), buf);
GST_LOG_OBJECT (splitpad, "Pad push returned %d", ret);
return ret;
}
static void
gst_splitmux_pad_loop (GstPad * pad)
{
/* Get one event/buffer from the associated part and push */
SplitMuxSrcPad *splitpad = (SplitMuxSrcPad *) (pad);
GstSplitMuxSrc *splitmux = (GstSplitMuxSrc *) gst_pad_get_parent (pad);
GstDataQueueItem *item = NULL;
GstSplitMuxPartReader *reader = splitpad->reader;
GstPad *part_pad;
GstFlowReturn ret;
GST_OBJECT_LOCK (splitpad);
if (splitpad->part_pad == NULL) {
GST_OBJECT_UNLOCK (splitpad);
return;
}
part_pad = gst_object_ref (splitpad->part_pad);
GST_OBJECT_UNLOCK (splitpad);
GST_LOG_OBJECT (splitpad, "Popping data queue item from %" GST_PTR_FORMAT
" pad %" GST_PTR_FORMAT, reader, part_pad);
ret = gst_splitmux_part_reader_pop (reader, part_pad, &item);
if (ret == GST_FLOW_ERROR)
goto error;
if (ret == GST_FLOW_FLUSHING || item == NULL)
goto flushing;
GST_DEBUG_OBJECT (splitpad, "Got data queue item %" GST_PTR_FORMAT,
item->object);
if (GST_IS_EVENT (item->object)) {
GstEvent *event = (GstEvent *) (item->object);
gst_splitmux_handle_event (splitmux, splitpad, part_pad, event);
} else {
GstBuffer *buf = (GstBuffer *) (item->object);
GstFlowReturn ret = gst_splitmux_handle_buffer (splitmux, splitpad, buf);
if (G_UNLIKELY (ret != GST_FLOW_OK && ret != GST_FLOW_EOS)) {
/* Stop immediately on error or flushing */
GST_INFO_OBJECT (splitpad, "Stopping due to pad_push() result %d", ret);
gst_pad_pause_task (pad);
if (ret < GST_FLOW_EOS || ret == GST_FLOW_NOT_LINKED) {
GST_ELEMENT_FLOW_ERROR (splitmux, ret);
}
}
}
g_slice_free (GstDataQueueItem, item);
gst_object_unref (part_pad);
gst_object_unref (splitmux);
return;
error:
/* Fall through */
GST_ELEMENT_ERROR (splitmux, RESOURCE, OPEN_READ, (NULL),
("Error reading part file %s", GST_STR_NULL (reader->path)));
flushing:
gst_pad_pause_task (pad);
gst_object_unref (part_pad);
gst_object_unref (splitmux);
return;
}
static gboolean
gst_splitmux_src_activate_part (GstSplitMuxSrc * splitmux, guint part,
GstSeekFlags extra_flags)
{
GList *cur;
GST_DEBUG_OBJECT (splitmux, "Activating part %d", part);
splitmux->cur_part = part;
if (!gst_splitmux_part_reader_activate (splitmux->parts[part],
&splitmux->play_segment, extra_flags))
return FALSE;
SPLITMUX_SRC_PADS_LOCK (splitmux);
for (cur = g_list_first (splitmux->pads);
cur != NULL; cur = g_list_next (cur)) {
SplitMuxSrcPad *splitpad = (SplitMuxSrcPad *) (cur->data);
splitpad->cur_part = part;
splitpad->reader = splitmux->parts[splitpad->cur_part];
if (splitpad->part_pad)
gst_object_unref (splitpad->part_pad);
splitpad->part_pad =
gst_splitmux_part_reader_lookup_pad (splitpad->reader,
(GstPad *) (splitpad));
/* Make sure we start with a DISCONT */
splitpad->set_next_discont = TRUE;
splitpad->clear_next_discont = FALSE;
gst_pad_start_task (GST_PAD (splitpad),
(GstTaskFunction) gst_splitmux_pad_loop, splitpad, NULL);
}
SPLITMUX_SRC_PADS_UNLOCK (splitmux);
return TRUE;
}
static gboolean
gst_splitmux_src_start (GstSplitMuxSrc * splitmux)
{
gboolean ret = FALSE;
GError *err = NULL;
gchar *basename = NULL;
gchar *dirname = NULL;
gchar **files;
GstClockTime next_offset = 0;
guint i;
GstClockTime total_duration = 0;
GST_DEBUG_OBJECT (splitmux, "Starting");
g_signal_emit (splitmux, signals[SIGNAL_FORMAT_LOCATION], 0, &files);
if (files == NULL || *files == NULL) {
GST_OBJECT_LOCK (splitmux);
if (splitmux->location != NULL && splitmux->location[0] != '\0') {
basename = g_path_get_basename (splitmux->location);
dirname = g_path_get_dirname (splitmux->location);
}
GST_OBJECT_UNLOCK (splitmux);
g_strfreev (files);
files = gst_split_util_find_files (dirname, basename, &err);
if (files == NULL || *files == NULL)
goto no_files;
}
SPLITMUX_SRC_LOCK (splitmux);
splitmux->pads_complete = FALSE;
splitmux->running = TRUE;
SPLITMUX_SRC_UNLOCK (splitmux);
splitmux->num_parts = g_strv_length (files);
splitmux->parts = g_new0 (GstSplitMuxPartReader *, splitmux->num_parts);
for (i = 0; i < splitmux->num_parts; i++) {
splitmux->parts[i] = gst_splitmux_part_create (splitmux, files[i]);
if (splitmux->parts[i] == NULL)
break;
/* Figure out the next offset - the smallest one */
gst_splitmux_part_reader_set_start_offset (splitmux->parts[i], next_offset);
if (!gst_splitmux_part_reader_prepare (splitmux->parts[i])) {
GST_WARNING_OBJECT (splitmux,
"Failed to prepare file part %s. Cannot play past there.", files[i]);
GST_ELEMENT_WARNING (splitmux, RESOURCE, READ, (NULL),
("Failed to prepare file part %s. Cannot play past there.",
files[i]));
gst_splitmux_part_reader_unprepare (splitmux->parts[i]);
g_object_unref (splitmux->parts[i]);
splitmux->parts[i] = NULL;
break;
}
/* Extend our total duration to cover this part */
total_duration =
next_offset +
gst_splitmux_part_reader_get_duration (splitmux->parts[i]);
splitmux->play_segment.duration = total_duration;
next_offset = gst_splitmux_part_reader_get_end_offset (splitmux->parts[i]);
}
/* Update total_duration state variable */
GST_OBJECT_LOCK (splitmux);
splitmux->total_duration = total_duration;
GST_OBJECT_UNLOCK (splitmux);
/* Store how many parts we actually created */
splitmux->num_parts = i;
if (splitmux->num_parts < 1)
goto failed_part;
/* All done preparing, activate the first part */
GST_INFO_OBJECT (splitmux,
"All parts prepared. Total duration %" GST_TIME_FORMAT
" Activating first part", GST_TIME_ARGS (total_duration));
ret = gst_splitmux_src_activate_part (splitmux, 0, GST_SEEK_FLAG_NONE);
if (ret == FALSE)
goto failed_first_part;
done:
if (err != NULL)
g_error_free (err);
g_strfreev (files);
g_free (basename);
g_free (dirname);
return ret;
/* ERRORS */
no_files:
{
GST_ELEMENT_ERROR (splitmux, RESOURCE, OPEN_READ, ("%s", err->message),
("Failed to find files in '%s' for pattern '%s'",
GST_STR_NULL (dirname), GST_STR_NULL (basename)));
goto done;
}
failed_part:
{
GST_ELEMENT_ERROR (splitmux, RESOURCE, OPEN_READ, (NULL),
("Failed to open any files for reading"));
goto done;
}
failed_first_part:
{
GST_ELEMENT_ERROR (splitmux, RESOURCE, OPEN_READ, (NULL),
("Failed to activate first part for playback"));
goto done;
}
}
static gboolean
gst_splitmux_src_stop (GstSplitMuxSrc * splitmux)
{
gboolean ret = TRUE;
guint i;
GList *cur, *pads_list;
SPLITMUX_SRC_LOCK (splitmux);
if (!splitmux->running)
goto out;
GST_DEBUG_OBJECT (splitmux, "Stopping");
/* Stop and destroy all parts */
for (i = 0; i < splitmux->num_parts; i++) {
if (splitmux->parts[i] == NULL)
continue;
gst_splitmux_part_reader_unprepare (splitmux->parts[i]);
g_object_unref (splitmux->parts[i]);
splitmux->parts[i] = NULL;
}
SPLITMUX_SRC_PADS_LOCK (splitmux);
pads_list = splitmux->pads;
splitmux->pads = NULL;
SPLITMUX_SRC_PADS_UNLOCK (splitmux);
SPLITMUX_SRC_UNLOCK (splitmux);
for (cur = g_list_first (pads_list); cur != NULL; cur = g_list_next (cur)) {
SplitMuxSrcPad *tmp = (SplitMuxSrcPad *) (cur->data);
gst_pad_stop_task (GST_PAD (tmp));
gst_element_remove_pad (GST_ELEMENT (splitmux), GST_PAD (tmp));
}
g_list_free (pads_list);
SPLITMUX_SRC_LOCK (splitmux);
g_free (splitmux->parts);
splitmux->parts = NULL;
splitmux->num_parts = 0;
splitmux->running = FALSE;
splitmux->total_duration = GST_CLOCK_TIME_NONE;
/* Reset playback segment */
gst_segment_init (&splitmux->play_segment, GST_FORMAT_TIME);
out:
SPLITMUX_SRC_UNLOCK (splitmux);
return ret;
}
typedef struct
{
GstSplitMuxSrc *splitmux;
SplitMuxSrcPad *splitpad;
} SplitMuxAndPad;
static gboolean
handle_sticky_events (GstPad * pad, GstEvent ** event, gpointer user_data)
{
SplitMuxAndPad *splitmux_and_pad;
GstSplitMuxSrc *splitmux;
SplitMuxSrcPad *splitpad;
splitmux_and_pad = user_data;
splitmux = splitmux_and_pad->splitmux;
splitpad = splitmux_and_pad->splitpad;
GST_DEBUG_OBJECT (splitpad, "handle sticky event %" GST_PTR_FORMAT, *event);
gst_event_ref (*event);
gst_splitmux_handle_event (splitmux, splitpad, pad, *event);
return TRUE;
}
static GstPad *
gst_splitmux_find_output_pad (GstSplitMuxPartReader * part, GstPad * pad,
GstSplitMuxSrc * splitmux)
{
GList *cur;
gchar *pad_name = gst_pad_get_name (pad);
GstPad *target = NULL;
gboolean is_new_pad = FALSE;
SPLITMUX_SRC_LOCK (splitmux);
SPLITMUX_SRC_PADS_LOCK (splitmux);
for (cur = g_list_first (splitmux->pads);
cur != NULL; cur = g_list_next (cur)) {
GstPad *tmp = (GstPad *) (cur->data);
if (g_str_equal (GST_PAD_NAME (tmp), pad_name)) {
target = tmp;
break;
}
}
if (target == NULL && !splitmux->pads_complete) {
SplitMuxAndPad splitmux_and_pad;
/* No pad found, create one */
target = g_object_new (SPLITMUX_TYPE_SRC_PAD,
"name", pad_name, "direction", GST_PAD_SRC, NULL);
splitmux->pads = g_list_prepend (splitmux->pads, target);
gst_pad_set_active (target, TRUE);
splitmux_and_pad.splitmux = splitmux;
splitmux_and_pad.splitpad = (SplitMuxSrcPad *) target;
gst_pad_sticky_events_foreach (pad, handle_sticky_events,
&splitmux_and_pad);
is_new_pad = TRUE;
}
SPLITMUX_SRC_PADS_UNLOCK (splitmux);
SPLITMUX_SRC_UNLOCK (splitmux);
g_free (pad_name);
if (target == NULL)
goto pad_not_found;
if (is_new_pad)
gst_element_add_pad (GST_ELEMENT_CAST (splitmux), target);
return target;
pad_not_found:
GST_ELEMENT_ERROR (splitmux, STREAM, FAILED, (NULL),
("Stream part %s contains extra unknown pad %" GST_PTR_FORMAT,
part->path, pad));
return NULL;
}
static void
gst_splitmux_part_prepared (GstSplitMuxPartReader * reader,
GstSplitMuxSrc * splitmux)
{
gboolean need_no_more_pads;
GST_LOG_OBJECT (splitmux, "Part %" GST_PTR_FORMAT " prepared", reader);
SPLITMUX_SRC_LOCK (splitmux);
need_no_more_pads = !splitmux->pads_complete;
splitmux->pads_complete = TRUE;
SPLITMUX_SRC_UNLOCK (splitmux);
if (need_no_more_pads) {
GST_DEBUG_OBJECT (splitmux, "Signalling no-more-pads");
gst_element_no_more_pads (GST_ELEMENT_CAST (splitmux));
}
}
static void
gst_splitmux_push_event (GstSplitMuxSrc * splitmux, GstEvent * e,
guint32 seqnum)
{
GList *cur;
if (seqnum)
gst_event_set_seqnum (e, seqnum);
SPLITMUX_SRC_PADS_LOCK (splitmux);
for (cur = g_list_first (splitmux->pads);
cur != NULL; cur = g_list_next (cur)) {
GstPad *pad = GST_PAD_CAST (cur->data);
gst_event_ref (e);
gst_pad_push_event (pad, e);
}
SPLITMUX_SRC_PADS_UNLOCK (splitmux);
gst_event_unref (e);
}
static void
gst_splitmux_push_flush_stop (GstSplitMuxSrc * splitmux, guint32 seqnum)
{
GstEvent *e = gst_event_new_flush_stop (TRUE);
GList *cur;
if (seqnum)
gst_event_set_seqnum (e, seqnum);
SPLITMUX_SRC_PADS_LOCK (splitmux);
for (cur = g_list_first (splitmux->pads);
cur != NULL; cur = g_list_next (cur)) {
SplitMuxSrcPad *target = (SplitMuxSrcPad *) (cur->data);
gst_event_ref (e);
gst_pad_push_event (GST_PAD_CAST (target), e);
target->sent_caps = FALSE;
target->sent_stream_start = FALSE;
target->sent_segment = FALSE;
}
SPLITMUX_SRC_PADS_UNLOCK (splitmux);
gst_event_unref (e);
}
/* Callback for when a part finishes and we need to move to the next */
static gboolean
gst_splitmux_end_of_part (GstSplitMuxSrc * splitmux, SplitMuxSrcPad * splitpad)
{
gint next_part = -1;
gint cur_part = splitpad->cur_part;
gboolean res = FALSE;
if (splitmux->play_segment.rate >= 0.0) {
if (cur_part + 1 < splitmux->num_parts)
next_part = cur_part + 1;
/* Make sure the transition is seamless */
splitpad->set_next_discont = FALSE;
splitpad->clear_next_discont = TRUE;
} else {
/* Reverse play - move to previous segment */
if (cur_part > 0) {
next_part = cur_part - 1;
/* Non-seamless transition in reverse */
splitpad->set_next_discont = TRUE;
splitpad->clear_next_discont = FALSE;
}
}
SPLITMUX_SRC_LOCK (splitmux);
/* If all pads are done with this part, deactivate it */
if (gst_splitmux_part_is_eos (splitmux->parts[splitpad->cur_part]))
gst_splitmux_part_reader_deactivate (splitmux->parts[cur_part]);
if (splitmux->play_segment.rate >= 0.0) {
if (splitmux->play_segment.stop != -1) {
GstClockTime part_end =
gst_splitmux_part_reader_get_end_offset (splitmux->parts[cur_part]);
if (part_end >= splitmux->play_segment.stop) {
GST_DEBUG_OBJECT (splitmux,
"Stop position was within that part. Finishing");
next_part = -1;
}
}
} else {
if (splitmux->play_segment.start != -1) {
GstClockTime part_start =
gst_splitmux_part_reader_get_start_offset (splitmux->parts[cur_part]);
if (part_start <= splitmux->play_segment.start) {
GST_DEBUG_OBJECT (splitmux,
"Start position %" GST_TIME_FORMAT
" was within that part. Finishing",
GST_TIME_ARGS (splitmux->play_segment.start));
next_part = -1;
}
}
}
if (next_part != -1) {
GST_DEBUG_OBJECT (splitmux, "At EOS on pad %" GST_PTR_FORMAT
" moving to part %d", splitpad, next_part);
splitpad->cur_part = next_part;
splitpad->reader = splitmux->parts[splitpad->cur_part];
if (splitpad->part_pad)
gst_object_unref (splitpad->part_pad);
splitpad->part_pad =
gst_splitmux_part_reader_lookup_pad (splitpad->reader,
(GstPad *) (splitpad));
if (splitmux->cur_part != next_part) {
if (!gst_splitmux_part_reader_is_active (splitpad->reader)) {
GstSegment tmp;
/* If moving backward into a new part, set stop
* to -1 to ensure we play the entire file - workaround
* a bug in qtdemux that misses bits at the end */
gst_segment_copy_into (&splitmux->play_segment, &tmp);
if (tmp.rate < 0)
tmp.stop = -1;
/* This is the first pad to move to the new part, activate it */
GST_DEBUG_OBJECT (splitpad,
"First pad to change part. Activating part %d with seg %"
GST_SEGMENT_FORMAT, next_part, &tmp);
if (!gst_splitmux_part_reader_activate (splitpad->reader, &tmp,
GST_SEEK_FLAG_NONE))
goto error;
}
splitmux->cur_part = next_part;
}
res = TRUE;
}
SPLITMUX_SRC_UNLOCK (splitmux);
return res;
error:
SPLITMUX_SRC_UNLOCK (splitmux);
GST_ELEMENT_ERROR (splitmux, RESOURCE, READ, (NULL),
("Failed to activate part %d", splitmux->cur_part));
return FALSE;
}
G_DEFINE_TYPE (SplitMuxSrcPad, splitmux_src_pad, GST_TYPE_PAD);
static void
splitmux_src_pad_constructed (GObject * pad)
{
gst_pad_set_event_function (GST_PAD (pad),
GST_DEBUG_FUNCPTR (splitmux_src_pad_event));
gst_pad_set_query_function (GST_PAD (pad),
GST_DEBUG_FUNCPTR (splitmux_src_pad_query));
G_OBJECT_CLASS (splitmux_src_pad_parent_class)->constructed (pad);
}
static void
gst_splitmux_src_pad_dispose (GObject * object)
{
SplitMuxSrcPad *pad = (SplitMuxSrcPad *) (object);
GST_OBJECT_LOCK (pad);
if (pad->part_pad) {
gst_object_unref (pad->part_pad);
pad->part_pad = NULL;
}
GST_OBJECT_UNLOCK (pad);
G_OBJECT_CLASS (splitmux_src_pad_parent_class)->dispose (object);
}
static void
splitmux_src_pad_class_init (SplitMuxSrcPadClass * klass)
{
GObjectClass *gobject_klass = (GObjectClass *) (klass);
gobject_klass->constructed = splitmux_src_pad_constructed;
gobject_klass->dispose = gst_splitmux_src_pad_dispose;
}
static void
splitmux_src_pad_init (SplitMuxSrcPad * pad)
{
}
/* Event handler for source pads. Proxy events into the child
* parts as needed
*/
static gboolean
splitmux_src_pad_event (GstPad * pad, GstObject * parent, GstEvent * event)
{
GstSplitMuxSrc *splitmux = GST_SPLITMUX_SRC (parent);
gboolean ret = FALSE;
GST_DEBUG_OBJECT (parent, "event %" GST_PTR_FORMAT
" on %" GST_PTR_FORMAT, event, pad);
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_SEEK:{
GstFormat format;
gdouble rate;
GstSeekFlags flags;
GstSeekType start_type, stop_type;
gint64 start, stop;
guint32 seqnum;
gint i;
GstClockTime part_start, position;
GList *cur;
GstSegment tmp;
gst_event_parse_seek (event, &rate, &format, &flags,
&start_type, &start, &stop_type, &stop);
if (format != GST_FORMAT_TIME) {
GST_DEBUG_OBJECT (splitmux, "can only seek on TIME");
goto error;
}
/* FIXME: Support non-flushing seeks, which might never wake up */
if (!(flags & GST_SEEK_FLAG_FLUSH)) {
GST_DEBUG_OBJECT (splitmux, "Only flushing seeks supported");
goto error;
}
seqnum = gst_event_get_seqnum (event);
SPLITMUX_SRC_LOCK (splitmux);
if (!splitmux->running || splitmux->num_parts < 1) {
/* Not started yet */
SPLITMUX_SRC_UNLOCK (splitmux);
goto error;
}
gst_segment_copy_into (&splitmux->play_segment, &tmp);
if (!gst_segment_do_seek (&tmp, rate,
format, flags, start_type, start, stop_type, stop, NULL)) {
/* Invalid seek requested, ignore it */
SPLITMUX_SRC_UNLOCK (splitmux);
goto error;
}
position = tmp.position;
GST_DEBUG_OBJECT (splitmux, "Performing seek with seg %"
GST_SEGMENT_FORMAT, &tmp);
GST_DEBUG_OBJECT (splitmux,
"Handling flushing seek. Sending flush start");
/* Send flush_start */
gst_splitmux_push_event (splitmux, gst_event_new_flush_start (), seqnum);
/* Stop all parts, which will work because of the flush */
SPLITMUX_SRC_PADS_LOCK (splitmux);
SPLITMUX_SRC_UNLOCK (splitmux);
for (cur = g_list_first (splitmux->pads);
cur != NULL; cur = g_list_next (cur)) {
SplitMuxSrcPad *target = (SplitMuxSrcPad *) (cur->data);
GstSplitMuxPartReader *reader = splitmux->parts[target->cur_part];
gst_splitmux_part_reader_deactivate (reader);
}
/* Shut down pad tasks */
GST_DEBUG_OBJECT (splitmux, "Pausing pad tasks");
for (cur = g_list_first (splitmux->pads);
cur != NULL; cur = g_list_next (cur)) {
GstPad *splitpad = (GstPad *) (cur->data);
gst_pad_pause_task (GST_PAD (splitpad));
}
SPLITMUX_SRC_PADS_UNLOCK (splitmux);
SPLITMUX_SRC_LOCK (splitmux);
/* Send flush stop */
GST_DEBUG_OBJECT (splitmux, "Sending flush stop");
gst_splitmux_push_flush_stop (splitmux, seqnum);
/* Everything is stopped, so update the play_segment */
gst_segment_copy_into (&tmp, &splitmux->play_segment);
splitmux->segment_seqnum = seqnum;
/* Work out where to start from now */
for (i = 0; i < splitmux->num_parts; i++) {
GstSplitMuxPartReader *reader = splitmux->parts[i];
GstClockTime part_end =
gst_splitmux_part_reader_get_end_offset (reader);
if (part_end > position)
break;
}
if (i == splitmux->num_parts)
i = splitmux->num_parts - 1;
part_start =
gst_splitmux_part_reader_get_start_offset (splitmux->parts[i]);
GST_DEBUG_OBJECT (splitmux,
"Seek to time %" GST_TIME_FORMAT " landed in part %d offset %"
GST_TIME_FORMAT, GST_TIME_ARGS (position),
i, GST_TIME_ARGS (position - part_start));
ret = gst_splitmux_src_activate_part (splitmux, i, flags);
SPLITMUX_SRC_UNLOCK (splitmux);
}
default:
break;
}
gst_event_unref (event);
error:
return ret;
}
static gboolean
splitmux_src_pad_query (GstPad * pad, GstObject * parent, GstQuery * query)
{
/* Query handler for source pads. Proxy queries into the child
* parts as needed
*/
GstSplitMuxSrc *splitmux = GST_SPLITMUX_SRC (parent);
gboolean ret = FALSE;
GST_LOG_OBJECT (parent, "query %" GST_PTR_FORMAT
" on %" GST_PTR_FORMAT, query, pad);
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_CAPS:
case GST_QUERY_POSITION:{
GstSplitMuxPartReader *part;
SplitMuxSrcPad *anypad;
SPLITMUX_SRC_LOCK (splitmux);
SPLITMUX_SRC_PADS_LOCK (splitmux);
anypad = (SplitMuxSrcPad *) (splitmux->pads->data);
part = splitmux->parts[anypad->cur_part];
ret = gst_splitmux_part_reader_src_query (part, pad, query);
SPLITMUX_SRC_PADS_UNLOCK (splitmux);
SPLITMUX_SRC_UNLOCK (splitmux);
break;
}
case GST_QUERY_DURATION:{
GstFormat fmt;
gst_query_parse_duration (query, &fmt, NULL);
if (fmt != GST_FORMAT_TIME)
break;
GST_OBJECT_LOCK (splitmux);
if (splitmux->total_duration > 0) {
gst_query_set_duration (query, GST_FORMAT_TIME,
splitmux->total_duration);
ret = TRUE;
}
GST_OBJECT_UNLOCK (splitmux);
break;
}
case GST_QUERY_SEEKING:{
GstFormat format;
gst_query_parse_seeking (query, &format, NULL, NULL, NULL);
if (format != GST_FORMAT_TIME)
break;
GST_OBJECT_LOCK (splitmux);
gst_query_set_seeking (query, GST_FORMAT_TIME, TRUE, 0,
splitmux->total_duration);
ret = TRUE;
GST_OBJECT_UNLOCK (splitmux);
break;
}
default:
break;
}
return ret;
}
gboolean
register_splitmuxsrc (GstPlugin * plugin)
{
GST_DEBUG_CATEGORY_INIT (splitmux_debug, "splitmuxsrc", 0,
"Split File Demuxing Source");
return gst_element_register (plugin, "splitmuxsrc", GST_RANK_NONE,
GST_TYPE_SPLITMUX_SRC);
}
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