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transcodebin: add converters before filters

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User doesn't have any guarantee about the actual raw format decodebin will
produce so their filters may or may not fit.

Fix #1228
This commit is contained in:
Guillaume Desmottes 2020-03-03 14:56:47 +05:30 committed by Thibault Saunier
parent 667eadac92
commit 469d2cac2f
1 changed files with 53 additions and 8 deletions
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61
gst/transcode/gsttranscodebin.c
View file

@ -23,6 +23,7 @@
#endif
#include "gsttranscoding.h"
#include <glib/gi18n-lib.h>
#include <gst/pbutils/pbutils.h>
#include <gst/pbutils/missing-plugins.h>
@ -103,14 +104,17 @@ static GstPad *
_insert_filter (GstTranscodeBin * self, GstPad * sinkpad, GstPad * pad,
GstCaps * caps)
{
GstPad *filter_src = NULL, *filter_sink = NULL;
GstElement *filter = NULL;
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 = self->video_filter;
else
@ -145,26 +149,67 @@ _insert_filter (GstTranscodeBin * self, GstPad * sinkpad, GstPad * pad,
filter_src = filter->srcpads->data;
GST_OBJECT_UNLOCK (filter);
gst_bin_add (GST_BIN (self), gst_object_ref (filter));
if (G_UNLIKELY (gst_pad_link (pad, filter_sink) != GST_PAD_LINK_OK)) {
GstCaps *othercaps = gst_pad_get_pad_template_caps (filter_sink);
if (audio)
convert = gst_element_factory_make ("audioconvert", "filter-convert");
else
convert = gst_element_factory_make ("videoconvert", "filter-convert");
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, gst_object_ref (filter), 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, filter_sink, othercaps));
"\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'",
filter == self->video_filter ? "video" : "audio",
GST_ELEMENT_NAME (filter));
audio ? "audio" : "video", GST_ELEMENT_NAME (filter));
return filter_src;
}