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gstreamer/subprojects/gst-plugins-bad/gst/transcode/gsttranscodebin.c

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/* GStreamer
* Copyright (C) 2019 Thibault Saunier <tsaunier@igalia.com>
*
* gsttranscodebin.c:
*
* 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.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "gsttranscoding.h"
#include "gsttranscodeelements.h"
#include <gst/gst-i18n-plugin.h>
#include <gst/pbutils/pbutils.h>
#include <gst/pbutils/missing-plugins.h>
/**
* GstTranscodeBin!sink_%u:
*
* Extra sinkpads for the parallel transcoding of auxiliary streams.
*
* Since: 1.20
*/
static GstStaticPadTemplate transcode_bin_sinks_template =
GST_STATIC_PAD_TEMPLATE ("sink_%u",
GST_PAD_SINK,
GST_PAD_REQUEST,
GST_STATIC_CAPS_ANY);
static GstStaticPadTemplate transcode_bin_sink_template =
GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS_ANY);
/**
* GstTranscodeBin!src_%u:
*
* The sometimes source pad, it will be exposed depending on the
* #transcodebin:profile in use.
*
* Note: in GStreamer 1.18 it was a static
* srcpad but in the the 1.20 cycle it was decided that we should make it a
* sometimes pad as part of the development of #encodebin2.
*
* Since: 1.20
*/
static GstStaticPadTemplate transcode_bin_src_template =
GST_STATIC_PAD_TEMPLATE ("src_%u",
GST_PAD_SRC,
GST_PAD_SOMETIMES,
GST_STATIC_CAPS_ANY);
typedef struct
{
const gchar *stream_id;
GstStream *stream;
GstPad *encodebin_pad;
} TranscodingStream;
static TranscodingStream *
transcoding_stream_new (GstStream * stream, GstPad * encodebin_pad)
{
TranscodingStream *tstream = g_new0 (TranscodingStream, 1);
tstream->stream_id = gst_stream_get_stream_id (stream);
tstream->stream = gst_object_ref (stream);
tstream->encodebin_pad = encodebin_pad;
return tstream;
}
static void
transcoding_stream_free (TranscodingStream * tstream)
{
gst_object_unref (tstream->stream);
gst_object_unref (tstream->encodebin_pad);
}
typedef struct
{
GstBin parent;
GstElement *decodebin;
GstElement *encodebin;
GstEncodingProfile *profile;
gboolean avoid_reencoding;
GstPad *sinkpad;
GstElement *audio_filter;
GstElement *video_filter;
GPtrArray *transcoding_streams;
} GstTranscodeBin;
typedef struct
{
GstBinClass parent;
} GstTranscodeBinClass;
/* *INDENT-OFF* */
#define GST_TYPE_TRANSCODE_BIN (gst_transcode_bin_get_type ())
#define GST_TRANSCODE_BIN(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_TRANSCODE_BIN, GstTranscodeBin))
#define DEFAULT_AVOID_REENCODING FALSE
G_DEFINE_TYPE (GstTranscodeBin, gst_transcode_bin, GST_TYPE_BIN);
GST_ELEMENT_REGISTER_DEFINE_WITH_CODE (transcodebin, "transcodebin", GST_RANK_NONE,
GST_TYPE_TRANSCODE_BIN, transcodebin_element_init (plugin));
enum
{
PROP_0,
PROP_PROFILE,
PROP_AVOID_REENCODING,
PROP_VIDEO_FILTER,
PROP_AUDIO_FILTER,
LAST_PROP
};
static void
post_missing_plugin_error (GstElement * dec, const gchar * element_name)
{
GstMessage *msg;
msg = gst_missing_element_message_new (dec, element_name);
gst_element_post_message (dec, msg);
GST_ELEMENT_ERROR (dec, CORE, MISSING_PLUGIN,
("Missing element '%s' - check your GStreamer installation.",
element_name), (NULL));
}
/* *INDENT-ON* */
static gboolean
filter_handles_any (GstElement * filter)
{
GList *tmp;
for (tmp = gst_element_get_pad_template_list (filter); tmp; tmp = tmp->next) {
GstPadTemplate *tmpl = tmp->data;
GstCaps *caps = gst_pad_template_get_caps (tmpl);
if (!gst_caps_is_any (caps)) {
gst_caps_unref (caps);
return FALSE;
}
gst_caps_unref (caps);
}
return gst_element_get_pad_template_list (filter) != NULL;
}
static GstPad *
_insert_filter (GstTranscodeBin * self, GstPad * sinkpad, GstPad * pad,
GstCaps * caps)
{
GstPad *filter_src = NULL, *filter_sink = NULL, *convert_sink, *convert_src;
GstElement *filter = NULL, *convert;
GstObject *filter_parent;
const gchar *media_type;
gboolean audio = TRUE;
media_type = gst_structure_get_name (gst_caps_get_structure (caps, 0));
if (self->video_filter && g_str_has_prefix (media_type, "video")) {
audio = FALSE;
if (!g_strcmp0 (media_type, "video/x-raw")
|| filter_handles_any (self->video_filter))
filter = self->video_filter;
else
GST_ERROR_OBJECT (pad, "decodebin pad does not produce raw data (%"
GST_PTR_FORMAT "), cannot add video filter '%s'", caps,
GST_ELEMENT_NAME (self->video_filter));
} else if (self->audio_filter && g_str_has_prefix (media_type, "audio")) {
if (!g_strcmp0 (media_type, "audio/x-raw")
|| filter_handles_any (self->audio_filter))
filter = self->audio_filter;
else
GST_ERROR_OBJECT (pad, "decodebin pad does not produce raw data (%"
GST_PTR_FORMAT "), cannot add audio filter '%s'", caps,
GST_ELEMENT_NAME (self->audio_filter));
}
if (!filter)
return pad;
filter_parent = gst_object_get_parent (GST_OBJECT (filter));
if (filter_parent != GST_OBJECT_CAST (self)) {
GST_WARNING_OBJECT (self,
"Filter already in use (inside %" GST_PTR_FORMAT ").", filter_parent);
GST_FIXME_OBJECT (self,
"Handle transcoding several streams of a same kind.");
gst_object_unref (filter_parent);
return pad;
}
gst_object_unref (filter_parent);
/* We are guaranteed filters only have 1 unique sinkpad and srcpad */
GST_OBJECT_LOCK (filter);
filter_sink = filter->sinkpads->data;
filter_src = filter->srcpads->data;
GST_OBJECT_UNLOCK (filter);
if (filter_handles_any (filter))
convert = gst_element_factory_make ("identity", NULL);
else if (audio)
convert = gst_element_factory_make ("audioconvert", NULL);
else
convert = gst_element_factory_make ("videoconvert", NULL);
if (!convert) {
GST_ELEMENT_ERROR (self, CORE, MISSING_PLUGIN,
(_("Missing element '%s' - check your GStreamer installation."),
audio ? "audioconvert" : "videoconvert"),
("Cannot add filter as %s element is missing",
audio ? "audioconvert" : "videoconvert"));
return pad;
}
gst_bin_add_many (GST_BIN (self), convert, NULL);
convert_sink = gst_element_get_static_pad (convert, "sink");
g_assert (convert_sink);
if (G_UNLIKELY (gst_pad_link (pad, convert_sink) != GST_PAD_LINK_OK)) {
GstCaps *othercaps = gst_pad_get_pad_template_caps (convert_sink);
caps = gst_pad_get_current_caps (pad);
GST_ELEMENT_ERROR (self, CORE, PAD,
(NULL),
("Couldn't link pads \n\n %" GST_PTR_FORMAT ": %" GST_PTR_FORMAT
"\n\n and \n\n %" GST_PTR_FORMAT ": %" GST_PTR_FORMAT
"\n\n", pad, caps, convert_sink, othercaps));
gst_object_unref (convert_sink);
gst_caps_unref (caps);
gst_caps_unref (othercaps);
}
gst_object_unref (convert_sink);
convert_src = gst_element_get_static_pad (convert, "src");
g_assert (convert_src);
if (G_UNLIKELY (gst_pad_link (convert_src, filter_sink) != GST_PAD_LINK_OK)) {
GstCaps *othercaps = gst_pad_get_pad_template_caps (filter_sink);
caps = gst_pad_get_pad_template_caps (convert_src);
GST_ELEMENT_ERROR (self, CORE, PAD,
(NULL),
("Couldn't link pads \n\n %" GST_PTR_FORMAT ": %" GST_PTR_FORMAT
"\n\n and \n\n %" GST_PTR_FORMAT ": %" GST_PTR_FORMAT
"\n\n", convert_src, caps, filter_sink, othercaps));
gst_object_unref (convert_src);
gst_caps_unref (caps);
gst_caps_unref (othercaps);
}
gst_object_unref (convert_src);
gst_element_sync_state_with_parent (convert);
gst_element_sync_state_with_parent (filter);
GST_DEBUG_OBJECT (self, "added %s filter '%s'",
audio ? "audio" : "video", GST_ELEMENT_NAME (filter));
return filter_src;
}
static TranscodingStream *
find_stream (GstTranscodeBin * self, const gchar * stream_id, GstPad * pad)
{
gint i;
TranscodingStream *res = NULL;
GST_OBJECT_LOCK (self);
for (i = 0; i < self->transcoding_streams->len; i = i + 1) {
TranscodingStream *s = self->transcoding_streams->pdata[i];
if (stream_id && !g_strcmp0 (s->stream_id, stream_id)) {
res = s;
goto done;
} else if (pad && s->encodebin_pad == pad) {
res = s;
goto done;
}
}
done:
GST_OBJECT_UNLOCK (self);
return res;
}
static void
gst_transcode_bin_link_encodebin_pad (GstTranscodeBin * self, GstPad * pad,
const gchar * stream_id)
{
GstCaps *caps;
GstPadLinkReturn lret;
TranscodingStream *stream = find_stream (self, stream_id, NULL);
if (!stream) {
GST_ERROR_OBJECT (self, "%s -> Got not stream, decodebin3 bug?", stream_id);
return;
}
caps = gst_pad_query_caps (pad, NULL);
pad = _insert_filter (self, stream->encodebin_pad, pad, caps);
lret = gst_pad_link (pad, stream->encodebin_pad);
switch (lret) {
case GST_PAD_LINK_OK:
break;
case GST_PAD_LINK_WAS_LINKED:
GST_FIXME_OBJECT (self, "Pad %" GST_PTR_FORMAT " was already linked",
stream->encodebin_pad);
break;
default:
{
GstCaps *othercaps = gst_pad_query_caps (stream->encodebin_pad, NULL);
caps = gst_pad_get_current_caps (pad);
if (!caps)
caps = gst_pad_query_caps (pad, NULL);
GST_ELEMENT_ERROR_WITH_DETAILS (self, CORE, PAD,
(NULL),
("Couldn't link pads:\n %" GST_PTR_FORMAT ": %" GST_PTR_FORMAT
"\nand:\n"
" %" GST_PTR_FORMAT ": %" GST_PTR_FORMAT "\n\n Error: %s\n",
pad, caps, stream->encodebin_pad, othercaps,
gst_pad_link_get_name (lret)),
("linking-error", GST_TYPE_PAD_LINK_RETURN, lret,
"source-pad", GST_TYPE_PAD, pad,
"source-caps", GST_TYPE_CAPS, caps,
"sink-pad", GST_TYPE_PAD, stream->encodebin_pad,
"sink-caps", GST_TYPE_CAPS, othercaps, NULL));
gst_clear_caps (&caps);
if (othercaps)
gst_caps_unref (othercaps);
}
}
}
static GstPadProbeReturn
wait_stream_start_probe (GstPad * pad,
GstPadProbeInfo * info, GstTranscodeBin * self)
{
const gchar *stream_id;
if (GST_EVENT_TYPE (info->data) != GST_EVENT_STREAM_START)
return GST_PAD_PROBE_OK;
gst_event_parse_stream_start (info->data, &stream_id);
GST_INFO_OBJECT (self, "Got pad %" GST_PTR_FORMAT " with stream ID: %s",
pad, stream_id);
gst_transcode_bin_link_encodebin_pad (self, pad, stream_id);
return GST_PAD_PROBE_REMOVE;
}
static void
decodebin_pad_added_cb (GstElement * decodebin, GstPad * pad,
GstTranscodeBin * self)
{
const gchar *stream_id;
GstEvent *sstart_event;
if (GST_PAD_IS_SINK (pad))
return;
sstart_event = gst_pad_get_sticky_event (pad, GST_EVENT_STREAM_START, -1);
if (sstart_event) {
gst_event_parse_stream_start (sstart_event, &stream_id);
GST_INFO_OBJECT (self, "Got pad %" GST_PTR_FORMAT " with stream ID: %s",
pad, stream_id);
gst_transcode_bin_link_encodebin_pad (self, pad, stream_id);
return;
}
GST_INFO_OBJECT (self, "Waiting for stream ID for pad %" GST_PTR_FORMAT, pad);
gst_pad_add_probe (pad, GST_PAD_PROBE_TYPE_EVENT_DOWNSTREAM,
(GstPadProbeCallback) wait_stream_start_probe, self, NULL);
}
static void
encodebin_pad_added_cb (GstElement * encodebin, GstPad * pad, GstElement * self)
{
GstPadTemplate *template;
GstPad *new_pad;
gchar *name;
if (!GST_PAD_IS_SRC (pad))
return;
template = gst_element_get_pad_template (self, "src_%u");
GST_OBJECT_LOCK (self);
name = g_strdup_printf ("src_%u", GST_ELEMENT (self)->numsrcpads);
GST_OBJECT_UNLOCK (self);
new_pad = gst_ghost_pad_new_from_template (name, pad, template);
g_free (name);
GST_DEBUG_OBJECT (self, "Encodebin exposed srcpad: %" GST_PTR_FORMAT, pad);
gst_element_add_pad (self, new_pad);
}
static gboolean
make_encodebin (GstTranscodeBin * self)
{
GST_INFO_OBJECT (self, "making new encodebin");
if (!self->profile)
goto no_profile;
self->encodebin = gst_element_factory_make ("encodebin2", NULL);
if (!self->encodebin)
goto no_encodebin;
gst_bin_add (GST_BIN (self), self->encodebin);
g_signal_connect (self->encodebin, "pad-added",
G_CALLBACK (encodebin_pad_added_cb), self);
g_object_set (self->encodebin, "profile", self->profile, NULL);
return gst_element_sync_state_with_parent (self->encodebin);
/* ERRORS */
no_encodebin:
{
post_missing_plugin_error (GST_ELEMENT_CAST (self), "encodebin");
GST_ELEMENT_ERROR (self, CORE, MISSING_PLUGIN, (NULL),
("No encodebin element, check your installation"));
return FALSE;
}
/* ERRORS */
no_profile:
{
GST_ELEMENT_ERROR (self, CORE, MISSING_PLUGIN, (NULL),
("No GstEncodingProfile set, can not run."));
return FALSE;
}
}
static GstPad *
get_encodebin_pad_for_caps (GstTranscodeBin * self, GstCaps * srccaps)
{
GstPad *res = NULL;
GstIterator *pads;
gboolean done = FALSE;
GValue paditem = { 0, };
if (G_UNLIKELY (srccaps == NULL))
goto no_caps;
pads = gst_element_iterate_sink_pads (self->encodebin);
GST_DEBUG_OBJECT (self, "srccaps %" GST_PTR_FORMAT, srccaps);
while (!done) {
switch (gst_iterator_next (pads, &paditem)) {
case GST_ITERATOR_OK:
{
GstPad *testpad = g_value_get_object (&paditem);
if (!gst_pad_is_linked (testpad) && !find_stream (self, NULL, testpad)) {
GstCaps *sinkcaps = gst_pad_query_caps (testpad, NULL);
GST_DEBUG_OBJECT (self, "sinkccaps %" GST_PTR_FORMAT, sinkcaps);
if (gst_caps_can_intersect (srccaps, sinkcaps)) {
res = gst_object_ref (testpad);
done = TRUE;
}
gst_caps_unref (sinkcaps);
}
g_value_reset (&paditem);
}
break;
case GST_ITERATOR_DONE:
case GST_ITERATOR_ERROR:
done = TRUE;
break;
case GST_ITERATOR_RESYNC:
gst_iterator_resync (pads);
break;
}
}
g_value_reset (&paditem);
gst_iterator_free (pads);
if (!res)
g_signal_emit_by_name (self->encodebin, "request-pad", srccaps, &res);
return res;
no_caps:
{
GST_DEBUG_OBJECT (self, "No caps, can't do anything");
return NULL;
}
}
static gboolean
caps_is_raw (GstCaps * caps, GstStreamType stype)
{
const gchar *media_type;
if (!caps || !gst_caps_get_size (caps))
return FALSE;
media_type = gst_structure_get_name (gst_caps_get_structure (caps, 0));
if (stype == GST_STREAM_TYPE_VIDEO)
return !g_strcmp0 (media_type, "video/x-raw");
else if (stype == GST_STREAM_TYPE_AUDIO)
return !g_strcmp0 (media_type, "audio/x-raw");
/* FIXME: Handle more types ? */
return FALSE;
}
static GstPad *
get_encodebin_pad_from_stream (GstTranscodeBin * self,
GstEncodingProfile * profile, GstStream * stream)
{
GstCaps *caps = gst_stream_get_caps (stream);
GstPad *sinkpad = get_encodebin_pad_for_caps (self, caps);
if (!sinkpad && !caps_is_raw (caps, gst_stream_get_stream_type (stream))) {
gst_clear_caps (&caps);
switch (gst_stream_get_stream_type (stream)) {
case GST_STREAM_TYPE_AUDIO:
caps = gst_caps_from_string ("audio/x-raw");
break;
case GST_STREAM_TYPE_VIDEO:
caps = gst_caps_from_string ("video/x-raw");
break;
default:
GST_INFO_OBJECT (self, "Unsupported stream type: %" GST_PTR_FORMAT,
stream);
return NULL;
}
sinkpad = get_encodebin_pad_for_caps (self, caps);
}
return sinkpad;
}
static gint
select_stream_cb (GstElement * decodebin,
GstStreamCollection * collection, GstStream * stream,
GstTranscodeBin * self)
{
gint i;
gboolean transcode_stream = FALSE;
guint len = 0;
GST_OBJECT_LOCK (self);
len = self->transcoding_streams->len;
GST_OBJECT_UNLOCK (self);
if (len) {
transcode_stream =
find_stream (self, gst_stream_get_stream_id (stream), NULL) != NULL;
if (transcode_stream)
goto done;
}
for (i = 0; i < gst_stream_collection_get_size (collection); i++) {
GstStream *tmpstream = gst_stream_collection_get_stream (collection, i);
GstPad *encodebin_pad =
get_encodebin_pad_from_stream (self, self->profile, tmpstream);
if (encodebin_pad) {
if (stream == tmpstream)
transcode_stream = TRUE;
GST_INFO_OBJECT (self,
"Going to transcode stream %s (encodebin pad: %" GST_PTR_FORMAT,
gst_stream_get_stream_id (tmpstream), encodebin_pad);
GST_OBJECT_LOCK (self);
g_ptr_array_add (self->transcoding_streams,
transcoding_stream_new (tmpstream, encodebin_pad));
GST_OBJECT_UNLOCK (self);
}
}
GST_OBJECT_LOCK (self);
len = self->transcoding_streams->len;
GST_OBJECT_UNLOCK (self);
if (len) {
transcode_stream =
find_stream (self, gst_stream_get_stream_id (stream), NULL) != NULL;
}
done:
if (!transcode_stream)
GST_INFO_OBJECT (self, "Discarding stream: %" GST_PTR_FORMAT, stream);
return transcode_stream;
}
/* Called with OBJECT_LOCK */
static void
_setup_avoid_reencoding (GstTranscodeBin * self)
{
const GList *tmp;
GstCaps *decodecaps;
if (!self->avoid_reencoding)
return;
if (!GST_IS_ENCODING_CONTAINER_PROFILE (self->profile))
return;
g_object_get (self->decodebin, "caps", &decodecaps, NULL);
decodecaps = gst_caps_make_writable (decodecaps);
tmp =
gst_encoding_container_profile_get_profiles
(GST_ENCODING_CONTAINER_PROFILE (self->profile));
for (; tmp; tmp = tmp->next) {
GstEncodingProfile *profile = tmp->data;
GstCaps *restrictions, *encodecaps;
GstElement *filter = NULL;
restrictions = gst_encoding_profile_get_restriction (profile);
if (restrictions && gst_caps_is_any (restrictions)) {
gst_caps_unref (restrictions);
continue;
}
encodecaps = gst_encoding_profile_get_format (profile);
filter = NULL;
/* Filter operates on raw data so don't allow decodebin to produce
* encoded data if one is defined. */
if (GST_IS_ENCODING_VIDEO_PROFILE (profile) && self->video_filter)
filter = self->video_filter;
else if (GST_IS_ENCODING_AUDIO_PROFILE (profile)
&& self->audio_filter)
filter = self->audio_filter;
if (!filter || filter_handles_any (filter)) {
GST_DEBUG_OBJECT (self,
"adding %" GST_PTR_FORMAT " as output caps to decodebin", encodecaps);
gst_caps_append (decodecaps, encodecaps);
}
}
GST_OBJECT_UNLOCK (self);
g_object_set (self->decodebin, "caps", decodecaps, NULL);
gst_caps_unref (decodecaps);
GST_OBJECT_LOCK (self);
}
static gboolean
make_decodebin (GstTranscodeBin * self)
{
GstPad *pad;
GST_INFO_OBJECT (self, "making new decodebin");
self->decodebin = gst_element_factory_make ("decodebin3", NULL);
g_signal_connect (self->decodebin, "pad-added",
G_CALLBACK (decodebin_pad_added_cb), self);
g_signal_connect (self->decodebin, "select-stream",
G_CALLBACK (select_stream_cb), self);
gst_bin_add (GST_BIN (self), self->decodebin);
pad = gst_element_get_static_pad (self->decodebin, "sink");
if (!gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->sinkpad), pad)) {
gst_object_unref (pad);
GST_ERROR_OBJECT (self, "Could not ghost %" GST_PTR_FORMAT " sinkpad",
self->decodebin);
return FALSE;
}
gst_object_unref (pad);
return TRUE;
/* ERRORS */
}
static void
remove_all_children (GstTranscodeBin * self)
{
if (self->encodebin) {
gst_element_set_state (self->encodebin, GST_STATE_NULL);
gst_bin_remove (GST_BIN (self), self->encodebin);
self->encodebin = NULL;
}
if (self->video_filter && GST_OBJECT_PARENT (self->video_filter)) {
gst_element_set_state (self->video_filter, GST_STATE_NULL);
gst_bin_remove (GST_BIN (self), self->video_filter);
}
if (self->audio_filter && GST_OBJECT_PARENT (self->audio_filter)) {
gst_element_set_state (self->audio_filter, GST_STATE_NULL);
gst_bin_remove (GST_BIN (self), self->audio_filter);
}
}
static GstStateChangeReturn
gst_transcode_bin_change_state (GstElement * element, GstStateChange transition)
{
GstStateChangeReturn ret;
GstTranscodeBin *self = GST_TRANSCODE_BIN (element);
switch (transition) {
case GST_STATE_CHANGE_READY_TO_PAUSED:
if (!self->decodebin) {
post_missing_plugin_error (GST_ELEMENT_CAST (self), "decodebin3");
GST_ELEMENT_ERROR (self, CORE, MISSING_PLUGIN, (NULL),
("No decodebin element, check your installation"));
goto setup_failed;
}
if (!make_encodebin (self))
goto setup_failed;
break;
default:
break;
}
ret =
GST_ELEMENT_CLASS (gst_transcode_bin_parent_class)->change_state (element,
transition);
if (ret == GST_STATE_CHANGE_FAILURE)
goto beach;
switch (transition) {
case GST_STATE_CHANGE_PAUSED_TO_READY:
GST_OBJECT_LOCK (self);
g_ptr_array_remove_range (self->transcoding_streams, 0,
self->transcoding_streams->len);
GST_OBJECT_UNLOCK (self);
g_signal_handlers_disconnect_by_data (self->decodebin, self);
remove_all_children (self);
break;
default:
break;
}
beach:
return ret;
setup_failed:
remove_all_children (self);
return GST_STATE_CHANGE_FAILURE;
}
static void
gst_transcode_bin_dispose (GObject * object)
{
GstTranscodeBin *self = (GstTranscodeBin *) object;
g_clear_object (&self->video_filter);
g_clear_object (&self->audio_filter);
g_clear_pointer (&self->transcoding_streams, g_ptr_array_unref);
G_OBJECT_CLASS (gst_transcode_bin_parent_class)->dispose (object);
}
static void
gst_transcode_bin_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec)
{
GstTranscodeBin *self = GST_TRANSCODE_BIN (object);
switch (prop_id) {
case PROP_PROFILE:
GST_OBJECT_LOCK (self);
g_value_set_object (value, self->profile);
GST_OBJECT_UNLOCK (self);
break;
case PROP_AVOID_REENCODING:
GST_OBJECT_LOCK (self);
g_value_set_boolean (value, self->avoid_reencoding);
GST_OBJECT_UNLOCK (self);
break;
case PROP_AUDIO_FILTER:
GST_OBJECT_LOCK (self);
g_value_set_object (value, self->audio_filter);
GST_OBJECT_UNLOCK (self);
break;
case PROP_VIDEO_FILTER:
GST_OBJECT_LOCK (self);
g_value_set_object (value, self->video_filter);
GST_OBJECT_UNLOCK (self);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
static GstPad *
gst_transcode_bin_request_pad (GstElement * element, GstPadTemplate * temp,
const gchar * name, const GstCaps * caps)
{
GstTranscodeBin *self = (GstTranscodeBin *) element;
GstPad *gpad, *decodebin_pad =
gst_element_request_pad_simple (self->decodebin, "sink_%u");
if (!decodebin_pad) {
GST_ERROR_OBJECT (element,
"Could not request decodebin3 pad for %" GST_PTR_FORMAT, caps);
return NULL;
}
gpad = gst_ghost_pad_new_from_template (name, decodebin_pad, temp);
gst_element_add_pad (element, GST_PAD (gpad));
gst_object_unref (decodebin_pad);
return gpad;
}
static void
_set_filter (GstTranscodeBin * self, GstElement * filter, GstElement ** mfilter)
{
if (filter) {
GST_OBJECT_LOCK (filter);
if (filter->numsinkpads != 1) {
GST_ERROR_OBJECT (self, "Can not use %" GST_PTR_FORMAT
" as filter as it does not have "
" one and only one sinkpad", filter);
goto bail_out;
} else if (filter->numsrcpads != 1) {
GST_ERROR_OBJECT (self, "Can not use %" GST_PTR_FORMAT
" as filter as it does not have " " one and only one srcpad", filter);
goto bail_out;
}
GST_OBJECT_UNLOCK (filter);
gst_bin_add (GST_BIN (self), gst_object_ref (filter));
}
GST_OBJECT_LOCK (self);
*mfilter = filter;
GST_OBJECT_UNLOCK (self);
return;
bail_out:
GST_OBJECT_UNLOCK (filter);
}
static void
_set_profile (GstTranscodeBin * self, GstEncodingProfile * profile)
{
GST_OBJECT_LOCK (self);
self->profile = profile;
_setup_avoid_reencoding (self);
GST_OBJECT_UNLOCK (self);
}
static void
gst_transcode_bin_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec)
{
GstTranscodeBin *self = GST_TRANSCODE_BIN (object);
switch (prop_id) {
case PROP_PROFILE:
_set_profile (self, g_value_dup_object (value));
break;
case PROP_AVOID_REENCODING:
GST_OBJECT_LOCK (self);
self->avoid_reencoding = g_value_get_boolean (value);
_setup_avoid_reencoding (self);
GST_OBJECT_UNLOCK (self);
break;
case PROP_AUDIO_FILTER:
_set_filter (self, g_value_dup_object (value), &self->audio_filter);
break;
case PROP_VIDEO_FILTER:
_set_filter (self, g_value_dup_object (value), &self->video_filter);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
static void
gst_transcode_bin_class_init (GstTranscodeBinClass * klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GstElementClass *gstelement_klass;
object_class->dispose = gst_transcode_bin_dispose;
object_class->get_property = gst_transcode_bin_get_property;
object_class->set_property = gst_transcode_bin_set_property;
gstelement_klass = (GstElementClass *) klass;
gstelement_klass->change_state =
GST_DEBUG_FUNCPTR (gst_transcode_bin_change_state);
gstelement_klass->request_new_pad =
GST_DEBUG_FUNCPTR (gst_transcode_bin_request_pad);
gst_element_class_add_pad_template (gstelement_klass,
gst_static_pad_template_get (&transcode_bin_sink_template));
gst_element_class_add_pad_template (gstelement_klass,
gst_static_pad_template_get (&transcode_bin_sinks_template));
gst_element_class_add_pad_template (gstelement_klass,
gst_static_pad_template_get (&transcode_bin_src_template));
gst_element_class_set_static_metadata (gstelement_klass,
"Transcode Bin", "Generic/Bin/Encoding",
"Autoplug and transcoder a stream",
"Thibault Saunier <tsaunier@igalia.com>");
/**
* GstTranscodeBin:profile:
*
* The #GstEncodingProfile to use. This property must be set before going
* to %GST_STATE_PAUSED or higher.
*/
g_object_class_install_property (object_class, PROP_PROFILE,
g_param_spec_object ("profile", "Profile",
"The GstEncodingProfile to use", GST_TYPE_ENCODING_PROFILE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
GST_PARAM_MUTABLE_READY));
/**
* GstTranscodeBin:avoid-reencoding:
*
* See #encodebin:avoid-reencoding
*/
g_object_class_install_property (object_class, PROP_AVOID_REENCODING,
g_param_spec_boolean ("avoid-reencoding", "Avoid re-encoding",
"Whether to re-encode portions of compatible video streams that lay on segment boundaries",
DEFAULT_AVOID_REENCODING,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
GST_PARAM_MUTABLE_READY));
/**
* GstTranscodeBin:video-filter:
*
* Set the video filter element/bin to use.
*/
g_object_class_install_property (object_class, PROP_VIDEO_FILTER,
g_param_spec_object ("video-filter", "Video filter",
"the video filter(s) to apply, if possible",
GST_TYPE_ELEMENT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
GST_PARAM_MUTABLE_READY));
/**
* GstTranscodeBin:audio-filter:
*
* Set the audio filter element/bin to use.
*/
g_object_class_install_property (object_class, PROP_AUDIO_FILTER,
g_param_spec_object ("audio-filter", "Audio filter",
"the audio filter(s) to apply, if possible",
GST_TYPE_ELEMENT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
GST_PARAM_MUTABLE_READY));
}
static void
gst_transcode_bin_init (GstTranscodeBin * self)
{
GstPadTemplate *pad_tmpl;
pad_tmpl = gst_static_pad_template_get (&transcode_bin_sink_template);
self->sinkpad = gst_ghost_pad_new_no_target_from_template ("sink", pad_tmpl);
gst_pad_set_active (self->sinkpad, TRUE);
gst_element_add_pad (GST_ELEMENT (self), self->sinkpad);
gst_object_unref (pad_tmpl);
self->transcoding_streams =
g_ptr_array_new_with_free_func ((GDestroyNotify) transcoding_stream_free);
make_decodebin (self);
}
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