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matroska-mux: Refuse caps changes after starting to write headers

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Matroska does not support changing the stream type and stream properties
after the headers were started to be written, and for example H264
codec_data changes can't be supported.

https://bugzilla.gnome.org/show_bug.cgi?id=782949
This commit is contained in:
Sebastian Dröge 2018-02-26 13:03:59 +02:00
parent b0dd092ea6
commit fc37bf70c5
1 changed files with 44 additions and 0 deletions
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44
gst/matroska/matroska-mux.c
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@ -975,9 +975,21 @@ gst_matroska_mux_video_pad_setcaps (GstPad * pad, GstCaps * caps)
gint width, height, pixel_width, pixel_height;
gint fps_d, fps_n;
guint multiview_flags;
GstCaps *old_caps;
mux = GST_MATROSKA_MUX (GST_PAD_PARENT (pad));
if ((old_caps = gst_pad_get_current_caps (pad))) {
if (mux->state >= GST_MATROSKA_MUX_STATE_HEADER
&& !gst_caps_is_equal (caps, old_caps)) {
GST_ELEMENT_ERROR (mux, STREAM, MUX, (NULL),
("Caps changed are not supported by Matroska"));
gst_caps_unref (old_caps);
goto refuse_caps;
}
gst_caps_unref (old_caps);
}
/* find context */
collect_pad = (GstMatroskaPad *) gst_pad_get_element_private (pad);
g_assert (collect_pad);
@ -1787,9 +1799,21 @@ gst_matroska_mux_audio_pad_setcaps (GstPad * pad, GstCaps * caps)
const GValue *codec_data = NULL;
GstBuffer *buf = NULL;
const gchar *stream_format = NULL;
GstCaps *old_caps;
mux = GST_MATROSKA_MUX (GST_PAD_PARENT (pad));
if ((old_caps = gst_pad_get_current_caps (pad))) {
if (mux->state >= GST_MATROSKA_MUX_STATE_HEADER
&& !gst_caps_is_equal (caps, old_caps)) {
GST_ELEMENT_ERROR (mux, STREAM, MUX, (NULL),
("Caps changed are not supported by Matroska"));
gst_caps_unref (old_caps);
goto refuse_caps;
}
gst_caps_unref (old_caps);
}
/* find context */
collect_pad = (GstMatroskaPad *) gst_pad_get_element_private (pad);
g_assert (collect_pad);
@ -2211,9 +2235,21 @@ gst_matroska_mux_subtitle_pad_setcaps (GstPad * pad, GstCaps * caps)
const GValue *value = NULL;
GstBuffer *buf = NULL;
gboolean ret = TRUE;
GstCaps *old_caps;
mux = GST_MATROSKA_MUX (GST_PAD_PARENT (pad));
if ((old_caps = gst_pad_get_current_caps (pad))) {
if (mux->state >= GST_MATROSKA_MUX_STATE_HEADER
&& !gst_caps_is_equal (caps, old_caps)) {
GST_ELEMENT_ERROR (mux, STREAM, MUX, (NULL),
("Caps changed are not supported by Matroska"));
gst_caps_unref (old_caps);
goto refuse_caps;
}
gst_caps_unref (old_caps);
}
/* find context */
collect_pad = (GstMatroskaPad *) gst_pad_get_element_private (pad);
g_assert (collect_pad);
@ -2295,6 +2331,14 @@ gst_matroska_mux_subtitle_pad_setcaps (GstPad * pad, GstCaps * caps)
exit:
return ret;
/* ERRORS */
refuse_caps:
{
GST_WARNING_OBJECT (mux, "pad %s refused caps %" GST_PTR_FORMAT,
GST_PAD_NAME (pad), caps);
return FALSE;
}
}