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d10f9a00e2
All events that we handle should be unreffed Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3902>
1974 lines
61 KiB
C
1974 lines
61 KiB
C
/* GStreamer
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* Copyright (C) 2015 Samsung Electronics Co., Ltd.
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* @Author: Chengjun Wang <cjun.wang@samsung.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <gst/video/video.h>
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#include <gst/video/gstvideometa.h>
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#include <gst/base/gstbytereader.h>
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#include "gstceaccoverlay.h"
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#include <string.h>
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#define GST_CAT_DEFAULT gst_cea_cc_overlay_debug
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GST_DEBUG_CATEGORY (gst_cea_cc_overlay_debug);
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#define DEFAULT_PROP_FONT_DESC ""
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#define DEFAULT_PROP_SILENT FALSE
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#define DEFAULT_PROP_SERVICE_NUMBER 1
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#define DEFAULT_PROP_WINDOW_H_POS GST_CEA_CC_OVERLAY_WIN_H_CENTER
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enum
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{
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PROP_0,
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PROP_FONT_DESC,
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PROP_SILENT,
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PROP_SERVICE_NUMBER,
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PROP_WINDOW_H_POS,
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PROP_LAST
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};
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#if G_BYTE_ORDER == G_LITTLE_ENDIAN
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# define CAIRO_ARGB_A 3
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# define CAIRO_ARGB_R 2
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# define CAIRO_ARGB_G 1
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# define CAIRO_ARGB_B 0
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#else
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# define CAIRO_ARGB_A 0
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# define CAIRO_ARGB_R 1
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# define CAIRO_ARGB_G 2
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# define CAIRO_ARGB_B 3
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#endif
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#define CAIRO_UNPREMULTIPLY(a,r,g,b) G_STMT_START { \
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b = (a > 0) ? MIN ((b * 255 + a / 2) / a, 255) : 0; \
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g = (a > 0) ? MIN ((g * 255 + a / 2) / a, 255) : 0; \
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r = (a > 0) ? MIN ((r * 255 + a / 2) / a, 255) : 0; \
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} G_STMT_END
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#define VIDEO_FORMATS GST_VIDEO_OVERLAY_COMPOSITION_BLEND_FORMATS
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#define CC_OVERLAY_CAPS GST_VIDEO_CAPS_MAKE (VIDEO_FORMATS)
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#define CC_OVERLAY_ALL_CAPS CC_OVERLAY_CAPS ";" \
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GST_VIDEO_CAPS_MAKE_WITH_FEATURES ("ANY", GST_VIDEO_FORMATS_ALL)
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static GstStaticCaps sw_template_caps = GST_STATIC_CAPS (CC_OVERLAY_CAPS);
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static GstStaticPadTemplate src_template_factory =
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GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS (CC_OVERLAY_ALL_CAPS)
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);
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static GstStaticPadTemplate video_sink_template_factory =
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GST_STATIC_PAD_TEMPLATE ("video_sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS (CC_OVERLAY_ALL_CAPS)
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);
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static GstStaticPadTemplate cc_sink_template_factory =
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GST_STATIC_PAD_TEMPLATE ("cc_sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS
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("closedcaption/x-cea-708, format={ (string) cdp, (string) cc_data }")
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);
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#define GST_TYPE_CC_OVERLAY_WIN_H_POS (gst_cea_cc_overlay_h_pos_get_type())
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static GType
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gst_cea_cc_overlay_h_pos_get_type (void)
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{
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static GType cc_overlay_win_h_pos_type = 0;
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static const GEnumValue cc_overlay_win_h_pos[] = {
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{GST_CEA_CC_OVERLAY_WIN_H_LEFT, "left", "left"},
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{GST_CEA_CC_OVERLAY_WIN_H_CENTER, "center", "center"},
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{GST_CEA_CC_OVERLAY_WIN_H_RIGHT, "right", "right"},
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{GST_CEA_CC_OVERLAY_WIN_H_AUTO, "auto", "auto"},
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{0, NULL, NULL},
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};
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if (!cc_overlay_win_h_pos_type) {
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cc_overlay_win_h_pos_type =
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g_enum_register_static ("GstCeaCcOverlayWinHPos", cc_overlay_win_h_pos);
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}
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return cc_overlay_win_h_pos_type;
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}
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#define GST_CEA_CC_OVERLAY_GET_LOCK(ov) (&GST_CEA_CC_OVERLAY (ov)->lock)
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#define GST_CEA_CC_OVERLAY_GET_COND(ov) (&GST_CEA_CC_OVERLAY (ov)->cond)
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#define GST_CEA_CC_OVERLAY_LOCK(ov) (g_mutex_lock (GST_CEA_CC_OVERLAY_GET_LOCK (ov)))
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#define GST_CEA_CC_OVERLAY_UNLOCK(ov) (g_mutex_unlock (GST_CEA_CC_OVERLAY_GET_LOCK (ov)))
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#define GST_CEA_CC_OVERLAY_WAIT(ov) (g_cond_wait (GST_CEA_CC_OVERLAY_GET_COND (ov), GST_CEA_CC_OVERLAY_GET_LOCK (ov)))
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#define GST_CEA_CC_OVERLAY_SIGNAL(ov) (g_cond_signal (GST_CEA_CC_OVERLAY_GET_COND (ov)))
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#define GST_CEA_CC_OVERLAY_BROADCAST(ov)(g_cond_broadcast (GST_CEA_CC_OVERLAY_GET_COND (ov)))
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static GstElementClass *parent_class = NULL;
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static void gst_base_cea_cc_overlay_base_init (gpointer g_class);
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static void gst_base_cea_cc_overlay_class_init (GstCeaCcOverlayClass * klass);
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static void gst_base_cea_cc_overlay_init (GstCeaCcOverlay * overlay,
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GstCeaCcOverlayClass * klass);
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static GstStateChangeReturn gst_cea_cc_overlay_change_state (GstElement *
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element, GstStateChange transition);
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static GstCaps *gst_cea_cc_overlay_get_videosink_caps (GstPad * pad,
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GstCeaCcOverlay * overlay, GstCaps * filter);
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static GstCaps *gst_cea_cc_overlay_get_src_caps (GstPad * pad,
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GstCeaCcOverlay * overlay, GstCaps * filter);
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static gboolean gst_cea_cc_overlay_setcaps (GstCeaCcOverlay * overlay,
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GstCaps * caps);
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static gboolean gst_cea_cc_overlay_src_event (GstPad * pad, GstObject * parent,
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GstEvent * event);
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static gboolean gst_cea_cc_overlay_src_query (GstPad * pad, GstObject * parent,
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GstQuery * query);
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static gboolean gst_cea_cc_overlay_video_event (GstPad * pad,
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GstObject * parent, GstEvent * event);
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static gboolean gst_cea_cc_overlay_video_query (GstPad * pad,
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GstObject * parent, GstQuery * query);
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static GstFlowReturn gst_cea_cc_overlay_video_chain (GstPad * pad,
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GstObject * parent, GstBuffer * buffer);
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static gboolean gst_cea_cc_overlay_cc_event (GstPad * pad,
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GstObject * parent, GstEvent * event);
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static GstFlowReturn gst_cea_cc_overlay_cc_chain (GstPad * pad,
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GstObject * parent, GstBuffer * buffer);
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static GstPadLinkReturn gst_cea_cc_overlay_cc_pad_link (GstPad * pad,
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GstObject * parent, GstPad * peer);
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static void gst_cea_cc_overlay_cc_pad_unlink (GstPad * pad, GstObject * parent);
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static void gst_cea_cc_overlay_pop_text (GstCeaCcOverlay * overlay);
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static void gst_cea_cc_overlay_finalize (GObject * object);
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static void gst_cea_cc_overlay_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_cea_cc_overlay_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static gboolean gst_cea_cc_overlay_can_handle_caps (GstCaps * incaps);
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GType
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gst_cea_cc_overlay_get_type (void)
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{
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static GType type = 0;
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if (g_once_init_enter ((gsize *) & type)) {
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static const GTypeInfo info = {
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sizeof (GstCeaCcOverlayClass),
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(GBaseInitFunc) gst_base_cea_cc_overlay_base_init,
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NULL,
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(GClassInitFunc) gst_base_cea_cc_overlay_class_init,
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NULL,
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NULL,
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sizeof (GstCeaCcOverlay),
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0,
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(GInstanceInitFunc) gst_base_cea_cc_overlay_init,
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};
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g_once_init_leave ((gsize *) & type,
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g_type_register_static (GST_TYPE_ELEMENT, "GstCeaCcOverlay", &info, 0));
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}
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return type;
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}
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GST_ELEMENT_REGISTER_DEFINE (cc708overlay, "cc708overlay",
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GST_RANK_PRIMARY, GST_TYPE_CEA_CC_OVERLAY);
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static void
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gst_base_cea_cc_overlay_base_init (gpointer g_class)
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{
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GstCeaCcOverlayClass *klass = GST_CEA_CC_OVERLAY_CLASS (g_class);
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PangoFontMap *fontmap;
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/* Only lock for the subclasses here, the base class
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* doesn't have this mutex yet and it's not necessary
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* here */
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fontmap = pango_cairo_font_map_get_default ();
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klass->pango_context =
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pango_font_map_create_context (PANGO_FONT_MAP (fontmap));
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}
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static void
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gst_base_cea_cc_overlay_class_init (GstCeaCcOverlayClass * klass)
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{
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GObjectClass *gobject_class;
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GstElementClass *gstelement_class;
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gobject_class = (GObjectClass *) klass;
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gstelement_class = (GstElementClass *) klass;
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GST_DEBUG_CATEGORY_INIT (gst_cea_cc_overlay_debug, "cc708overlay", 0,
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"cc708overlay");
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parent_class = g_type_class_peek_parent (klass);
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gobject_class->finalize = gst_cea_cc_overlay_finalize;
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gobject_class->set_property = gst_cea_cc_overlay_set_property;
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gobject_class->get_property = gst_cea_cc_overlay_get_property;
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gst_element_class_add_pad_template (gstelement_class,
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gst_static_pad_template_get (&src_template_factory));
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gst_element_class_add_pad_template (gstelement_class,
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gst_static_pad_template_get (&video_sink_template_factory));
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gst_element_class_add_pad_template (gstelement_class,
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gst_static_pad_template_get (&cc_sink_template_factory));
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gstelement_class->change_state =
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GST_DEBUG_FUNCPTR (gst_cea_cc_overlay_change_state);
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g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_SERVICE_NUMBER,
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g_param_spec_int ("service-number", "service-number",
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"Service number. Service 1 is designated as the Primary Caption Service,"
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" Service 2 is the Secondary Language Service.",
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-1, 63, DEFAULT_PROP_SERVICE_NUMBER,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_WINDOW_H_POS,
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g_param_spec_enum ("window-h-pos", "window-h-pos",
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"Window's Horizontal position", GST_TYPE_CC_OVERLAY_WIN_H_POS,
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DEFAULT_PROP_WINDOW_H_POS,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_FONT_DESC,
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g_param_spec_string ("font-desc", "font description",
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"Pango font description of font to be used for rendering.\n"
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"See documentation of pango_font_description_from_string for syntax.\n"
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"this will override closed caption stream specified font style/pen size.",
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DEFAULT_PROP_FONT_DESC, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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/**
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* GstCeaCcOverlay:silent:
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*
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* If set, no text is rendered. Useful to switch off text rendering
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* temporarily without removing the textoverlay element from the pipeline.
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*/
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/* FIXME 0.11: rename to "visible" or "text-visible" or "render-text" */
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g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_SILENT,
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g_param_spec_boolean ("silent", "silent",
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"Whether to render the text string",
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DEFAULT_PROP_SILENT,
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G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE | G_PARAM_STATIC_STRINGS));
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gst_element_class_set_static_metadata (gstelement_class,
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"Closed Caption overlay", "Mixer/Video/Overlay/Subtitle",
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"Decode cea608/cea708 data and overlay on proper position of a video buffer",
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"Chengjun Wang <cjun.wang@samsung.com>");
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gst_cea708_decoder_init_debug ();
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gst_type_mark_as_plugin_api (GST_TYPE_CC_OVERLAY_WIN_H_POS, 0);
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}
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static void
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gst_cea_cc_overlay_finalize (GObject * object)
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{
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GstCeaCcOverlay *overlay = GST_CEA_CC_OVERLAY (object);
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if (overlay->current_composition) {
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gst_video_overlay_composition_unref (overlay->current_composition);
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overlay->current_composition = NULL;
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}
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if (overlay->next_composition) {
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gst_video_overlay_composition_unref (overlay->next_composition);
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overlay->next_composition = NULL;
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}
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gst_cea708dec_free (overlay->decoder);
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overlay->decoder = NULL;
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g_mutex_clear (&overlay->lock);
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g_cond_clear (&overlay->cond);
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static void
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gst_base_cea_cc_overlay_init (GstCeaCcOverlay * overlay,
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GstCeaCcOverlayClass * klass)
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{
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GstPadTemplate *template;
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overlay->decoder = gst_cea708dec_create (GST_CEA_CC_OVERLAY_GET_CLASS
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(overlay)->pango_context);
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/* video sink */
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template = gst_static_pad_template_get (&video_sink_template_factory);
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overlay->video_sinkpad = gst_pad_new_from_template (template, "video_sink");
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gst_object_unref (template);
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gst_pad_set_event_function (overlay->video_sinkpad,
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GST_DEBUG_FUNCPTR (gst_cea_cc_overlay_video_event));
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gst_pad_set_chain_function (overlay->video_sinkpad,
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GST_DEBUG_FUNCPTR (gst_cea_cc_overlay_video_chain));
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gst_pad_set_query_function (overlay->video_sinkpad,
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GST_DEBUG_FUNCPTR (gst_cea_cc_overlay_video_query));
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GST_PAD_SET_PROXY_ALLOCATION (overlay->video_sinkpad);
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gst_element_add_pad (GST_ELEMENT (overlay), overlay->video_sinkpad);
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template =
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gst_element_class_get_pad_template (GST_ELEMENT_CLASS (klass), "cc_sink");
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if (template) {
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/* text sink */
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overlay->cc_sinkpad = gst_pad_new_from_template (template, "cc_sink");
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gst_pad_set_event_function (overlay->cc_sinkpad,
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GST_DEBUG_FUNCPTR (gst_cea_cc_overlay_cc_event));
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gst_pad_set_chain_function (overlay->cc_sinkpad,
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GST_DEBUG_FUNCPTR (gst_cea_cc_overlay_cc_chain));
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gst_pad_set_link_function (overlay->cc_sinkpad,
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GST_DEBUG_FUNCPTR (gst_cea_cc_overlay_cc_pad_link));
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gst_pad_set_unlink_function (overlay->cc_sinkpad,
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GST_DEBUG_FUNCPTR (gst_cea_cc_overlay_cc_pad_unlink));
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gst_element_add_pad (GST_ELEMENT (overlay), overlay->cc_sinkpad);
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}
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/* (video) source */
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template = gst_static_pad_template_get (&src_template_factory);
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overlay->srcpad = gst_pad_new_from_template (template, "src");
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gst_object_unref (template);
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gst_pad_set_event_function (overlay->srcpad,
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GST_DEBUG_FUNCPTR (gst_cea_cc_overlay_src_event));
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gst_pad_set_query_function (overlay->srcpad,
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GST_DEBUG_FUNCPTR (gst_cea_cc_overlay_src_query));
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gst_element_add_pad (GST_ELEMENT (overlay), overlay->srcpad);
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overlay->silent = DEFAULT_PROP_SILENT;
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overlay->need_update = TRUE;
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overlay->current_composition = NULL;
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overlay->next_composition = NULL;
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overlay->cc_pad_linked = FALSE;
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overlay->current_comp_start_time = GST_CLOCK_TIME_NONE;
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overlay->next_comp_start_time = GST_CLOCK_TIME_NONE;
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overlay->cea608_index[0] = 0;
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overlay->cea608_index[1] = 0;
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overlay->cea708_index = 0;
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overlay->default_window_h_pos = DEFAULT_PROP_WINDOW_H_POS;
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g_mutex_init (&overlay->lock);
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g_cond_init (&overlay->cond);
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gst_segment_init (&overlay->segment, GST_FORMAT_TIME);
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}
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/* only negotiate/query video overlay composition support for now */
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static gboolean
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gst_cea_cc_overlay_negotiate (GstCeaCcOverlay * overlay, GstCaps * caps)
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{
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GstQuery *query;
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gboolean attach = FALSE;
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gboolean caps_has_meta = TRUE;
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gboolean ret;
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GstCapsFeatures *f;
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GstCaps *original_caps;
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gboolean original_has_meta = FALSE;
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gboolean allocation_ret = TRUE;
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GST_DEBUG_OBJECT (overlay, "performing negotiation");
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if (!caps)
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caps = gst_pad_get_current_caps (overlay->video_sinkpad);
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else
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gst_caps_ref (caps);
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if (!caps || gst_caps_is_empty (caps))
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goto no_format;
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original_caps = caps;
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/* Try to use the overlay meta if possible */
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f = gst_caps_get_features (caps, 0);
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/* if the caps doesn't have the overlay meta, we query if downstream
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* accepts it before trying the version without the meta
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* If upstream already is using the meta then we can only use it */
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if (!f
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|| !gst_caps_features_contains (f,
|
|
GST_CAPS_FEATURE_META_GST_VIDEO_OVERLAY_COMPOSITION)) {
|
|
GstCaps *overlay_caps;
|
|
|
|
/* In this case we added the meta, but we can work without it
|
|
* so preserve the original caps so we can use it as a fallback */
|
|
overlay_caps = gst_caps_copy (caps);
|
|
|
|
f = gst_caps_get_features (overlay_caps, 0);
|
|
gst_caps_features_add (f,
|
|
GST_CAPS_FEATURE_META_GST_VIDEO_OVERLAY_COMPOSITION);
|
|
|
|
ret = gst_pad_peer_query_accept_caps (overlay->srcpad, overlay_caps);
|
|
GST_DEBUG_OBJECT (overlay, "Downstream accepts the overlay meta: %d", ret);
|
|
if (ret) {
|
|
gst_caps_unref (caps);
|
|
caps = overlay_caps;
|
|
|
|
} else {
|
|
/* fallback to the original */
|
|
gst_caps_unref (overlay_caps);
|
|
caps_has_meta = FALSE;
|
|
}
|
|
} else {
|
|
original_has_meta = TRUE;
|
|
}
|
|
GST_DEBUG_OBJECT (overlay, "Using caps %" GST_PTR_FORMAT, caps);
|
|
ret = gst_pad_set_caps (overlay->srcpad, caps);
|
|
|
|
if (ret) {
|
|
/* find supported meta */
|
|
query = gst_query_new_allocation (caps, FALSE);
|
|
|
|
if (!gst_pad_peer_query (overlay->srcpad, query)) {
|
|
/* no problem, we use the query defaults */
|
|
GST_DEBUG_OBJECT (overlay, "ALLOCATION query failed");
|
|
allocation_ret = FALSE;
|
|
}
|
|
|
|
if (caps_has_meta && gst_query_find_allocation_meta (query,
|
|
GST_VIDEO_OVERLAY_COMPOSITION_META_API_TYPE, NULL))
|
|
attach = TRUE;
|
|
gst_query_unref (query);
|
|
}
|
|
|
|
overlay->attach_compo_to_buffer = attach;
|
|
|
|
if (!allocation_ret && overlay->video_flushing) {
|
|
ret = FALSE;
|
|
} else if (original_caps && !original_has_meta && !attach) {
|
|
if (caps_has_meta) {
|
|
/* Some elements (fakesink) claim to accept the meta on caps but won't
|
|
put it in the allocation query result, this leads below
|
|
check to fail. Prevent this by removing the meta from caps */
|
|
gst_caps_unref (caps);
|
|
caps = gst_caps_ref (original_caps);
|
|
ret = gst_pad_set_caps (overlay->srcpad, caps);
|
|
if (ret && !gst_cea_cc_overlay_can_handle_caps (caps))
|
|
ret = FALSE;
|
|
}
|
|
}
|
|
|
|
if (!ret) {
|
|
GST_DEBUG_OBJECT (overlay, "negotiation failed, schedule reconfigure");
|
|
gst_pad_mark_reconfigure (overlay->srcpad);
|
|
}
|
|
gst_caps_unref (caps);
|
|
GST_DEBUG_OBJECT (overlay, "ret=%d", ret);
|
|
|
|
return ret;
|
|
|
|
no_format:
|
|
{
|
|
if (caps)
|
|
gst_caps_unref (caps);
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
gst_cea_cc_overlay_can_handle_caps (GstCaps * incaps)
|
|
{
|
|
gboolean ret;
|
|
GstCaps *caps;
|
|
static GstStaticCaps static_caps = GST_STATIC_CAPS (CC_OVERLAY_CAPS);
|
|
|
|
caps = gst_static_caps_get (&static_caps);
|
|
ret = gst_caps_is_subset (incaps, caps);
|
|
gst_caps_unref (caps);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static gboolean
|
|
gst_cea_cc_overlay_setcaps (GstCeaCcOverlay * overlay, GstCaps * caps)
|
|
{
|
|
GstVideoInfo info;
|
|
gboolean ret = FALSE;
|
|
|
|
if (!gst_video_info_from_caps (&info, caps))
|
|
goto invalid_caps;
|
|
|
|
overlay->info = info;
|
|
overlay->format = GST_VIDEO_INFO_FORMAT (&info);
|
|
overlay->width = GST_VIDEO_INFO_WIDTH (&info);
|
|
overlay->height = GST_VIDEO_INFO_HEIGHT (&info);
|
|
gst_cea708dec_set_video_width_height (overlay->decoder, overlay->width,
|
|
overlay->height);
|
|
ret = gst_cea_cc_overlay_negotiate (overlay, caps);
|
|
|
|
GST_CEA_CC_OVERLAY_LOCK (overlay);
|
|
if (!overlay->attach_compo_to_buffer &&
|
|
!gst_cea_cc_overlay_can_handle_caps (caps)) {
|
|
GST_DEBUG_OBJECT (overlay, "unsupported caps %" GST_PTR_FORMAT, caps);
|
|
ret = FALSE;
|
|
}
|
|
GST_CEA_CC_OVERLAY_UNLOCK (overlay);
|
|
|
|
return ret;
|
|
|
|
/* ERRORS */
|
|
invalid_caps:
|
|
{
|
|
GST_DEBUG_OBJECT (overlay, "could not parse caps");
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_cea_cc_overlay_set_property (GObject * object, guint prop_id,
|
|
const GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstCeaCcOverlay *overlay = GST_CEA_CC_OVERLAY (object);
|
|
Cea708Dec *decoder = overlay->decoder;
|
|
|
|
GST_CEA_CC_OVERLAY_LOCK (overlay);
|
|
switch (prop_id) {
|
|
case PROP_SERVICE_NUMBER:
|
|
{
|
|
int desired_service = g_value_get_int (value);
|
|
gst_cea708dec_set_service_number (decoder, desired_service);
|
|
break;
|
|
}
|
|
case PROP_FONT_DESC:
|
|
{
|
|
PangoFontDescription *desc = NULL;
|
|
const gchar *fontdesc_str;
|
|
fontdesc_str = g_value_get_string (value);
|
|
|
|
GST_LOG_OBJECT (overlay, "Got font description '%s'", fontdesc_str);
|
|
if (fontdesc_str)
|
|
desc = pango_font_description_from_string (fontdesc_str);
|
|
/* Only set if NULL or valid description */
|
|
if (desc || !fontdesc_str) {
|
|
if (desc) {
|
|
GST_INFO_OBJECT (overlay, "Setting font description: '%s'",
|
|
fontdesc_str);
|
|
pango_font_description_free (desc);
|
|
} else
|
|
GST_INFO_OBJECT (overlay, "Resetting default font description");
|
|
g_free (decoder->default_font_desc);
|
|
decoder->default_font_desc = g_strdup (fontdesc_str);
|
|
}
|
|
break;
|
|
}
|
|
case PROP_SILENT:
|
|
overlay->silent = g_value_get_boolean (value);
|
|
break;
|
|
case PROP_WINDOW_H_POS:
|
|
overlay->default_window_h_pos = g_value_get_enum (value);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
|
|
overlay->need_update = TRUE;
|
|
GST_CEA_CC_OVERLAY_UNLOCK (overlay);
|
|
}
|
|
|
|
static void
|
|
gst_cea_cc_overlay_get_property (GObject * object, guint prop_id,
|
|
GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstCeaCcOverlay *overlay = GST_CEA_CC_OVERLAY (object);
|
|
Cea708Dec *decoder = overlay->decoder;
|
|
|
|
GST_CEA_CC_OVERLAY_LOCK (overlay);
|
|
switch (prop_id) {
|
|
case PROP_SERVICE_NUMBER:
|
|
g_value_set_int (value, decoder->desired_service);
|
|
break;
|
|
case PROP_SILENT:
|
|
g_value_set_boolean (value, overlay->silent);
|
|
break;
|
|
case PROP_FONT_DESC:
|
|
g_value_set_string (value, decoder->default_font_desc);
|
|
break;
|
|
case PROP_WINDOW_H_POS:
|
|
g_value_set_enum (value, overlay->default_window_h_pos);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
|
|
GST_CEA_CC_OVERLAY_UNLOCK (overlay);
|
|
}
|
|
|
|
static gboolean
|
|
gst_cea_cc_overlay_src_query (GstPad * pad, GstObject * parent,
|
|
GstQuery * query)
|
|
{
|
|
gboolean ret = FALSE;
|
|
GstCeaCcOverlay *overlay;
|
|
|
|
overlay = GST_CEA_CC_OVERLAY (parent);
|
|
|
|
switch (GST_QUERY_TYPE (query)) {
|
|
case GST_QUERY_CAPS:
|
|
{
|
|
GstCaps *filter, *caps;
|
|
|
|
gst_query_parse_caps (query, &filter);
|
|
caps = gst_cea_cc_overlay_get_src_caps (pad, overlay, filter);
|
|
gst_query_set_caps_result (query, caps);
|
|
gst_caps_unref (caps);
|
|
ret = TRUE;
|
|
break;
|
|
}
|
|
default:
|
|
ret = gst_pad_query_default (pad, parent, query);
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static gboolean
|
|
gst_cea_cc_overlay_src_event (GstPad * pad, GstObject * parent,
|
|
GstEvent * event)
|
|
{
|
|
GstCeaCcOverlay *overlay;
|
|
gboolean ret;
|
|
|
|
overlay = GST_CEA_CC_OVERLAY (parent);
|
|
|
|
if (overlay->cc_pad_linked) {
|
|
gst_event_ref (event);
|
|
ret = gst_pad_push_event (overlay->video_sinkpad, event);
|
|
gst_pad_push_event (overlay->cc_sinkpad, event);
|
|
} else {
|
|
ret = gst_pad_push_event (overlay->video_sinkpad, event);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* gst_cea_cc_overlay_add_feature_and_intersect:
|
|
*
|
|
* Creates a new #GstCaps containing the (given caps +
|
|
* given caps feature) + (given caps intersected by the
|
|
* given filter).
|
|
*
|
|
* Returns: the new #GstCaps
|
|
*/
|
|
static GstCaps *
|
|
gst_cea_cc_overlay_add_feature_and_intersect (GstCaps * caps,
|
|
const gchar * feature, GstCaps * filter)
|
|
{
|
|
int i, caps_size;
|
|
GstCaps *new_caps;
|
|
|
|
new_caps = gst_caps_copy (caps);
|
|
|
|
caps_size = gst_caps_get_size (new_caps);
|
|
for (i = 0; i < caps_size; i++) {
|
|
GstCapsFeatures *features = gst_caps_get_features (new_caps, i);
|
|
|
|
if (!gst_caps_features_is_any (features)) {
|
|
gst_caps_features_add (features, feature);
|
|
}
|
|
}
|
|
|
|
gst_caps_append (new_caps, gst_caps_intersect_full (caps,
|
|
filter, GST_CAPS_INTERSECT_FIRST));
|
|
|
|
return new_caps;
|
|
}
|
|
|
|
/**
|
|
* gst_cea_cc_overlay_intersect_by_feature:
|
|
*
|
|
* Creates a new #GstCaps based on the following filtering rule.
|
|
*
|
|
* For each individual caps contained in given caps, if the
|
|
* caps uses the given caps feature, keep a version of the caps
|
|
* with the feature and an another one without. Otherwise, intersect
|
|
* the caps with the given filter.
|
|
*
|
|
* Returns: the new #GstCaps
|
|
*/
|
|
static GstCaps *
|
|
gst_cea_cc_overlay_intersect_by_feature (GstCaps * caps,
|
|
const gchar * feature, GstCaps * filter)
|
|
{
|
|
int i, caps_size;
|
|
GstCaps *new_caps;
|
|
|
|
new_caps = gst_caps_new_empty ();
|
|
|
|
caps_size = gst_caps_get_size (caps);
|
|
for (i = 0; i < caps_size; i++) {
|
|
GstStructure *caps_structure = gst_caps_get_structure (caps, i);
|
|
GstCapsFeatures *caps_features =
|
|
gst_caps_features_copy (gst_caps_get_features (caps, i));
|
|
GstCaps *filtered_caps;
|
|
GstCaps *simple_caps =
|
|
gst_caps_new_full (gst_structure_copy (caps_structure), NULL);
|
|
gst_caps_set_features (simple_caps, 0, caps_features);
|
|
|
|
if (gst_caps_features_contains (caps_features, feature)) {
|
|
gst_caps_append (new_caps, gst_caps_copy (simple_caps));
|
|
|
|
gst_caps_features_remove (caps_features, feature);
|
|
filtered_caps = gst_caps_ref (simple_caps);
|
|
} else {
|
|
filtered_caps = gst_caps_intersect_full (simple_caps, filter,
|
|
GST_CAPS_INTERSECT_FIRST);
|
|
}
|
|
gst_caps_unref (simple_caps);
|
|
gst_caps_append (new_caps, filtered_caps);
|
|
}
|
|
|
|
return new_caps;
|
|
}
|
|
|
|
static GstCaps *
|
|
gst_cea_cc_overlay_get_videosink_caps (GstPad * pad,
|
|
GstCeaCcOverlay * overlay, GstCaps * filter)
|
|
{
|
|
GstPad *srcpad = overlay->srcpad;
|
|
GstCaps *peer_caps = NULL, *caps = NULL, *overlay_filter = NULL;
|
|
|
|
if (G_UNLIKELY (!overlay))
|
|
return gst_pad_get_pad_template_caps (pad);
|
|
|
|
if (filter) {
|
|
/* filter caps + composition feature + filter caps
|
|
* filtered by the software caps. */
|
|
GstCaps *sw_caps = gst_static_caps_get (&sw_template_caps);
|
|
overlay_filter = gst_cea_cc_overlay_add_feature_and_intersect (filter,
|
|
GST_CAPS_FEATURE_META_GST_VIDEO_OVERLAY_COMPOSITION, sw_caps);
|
|
gst_caps_unref (sw_caps);
|
|
|
|
GST_DEBUG_OBJECT (overlay, "overlay filter %" GST_PTR_FORMAT,
|
|
overlay_filter);
|
|
}
|
|
|
|
peer_caps = gst_pad_peer_query_caps (srcpad, overlay_filter);
|
|
if (overlay_filter)
|
|
gst_caps_unref (overlay_filter);
|
|
if (peer_caps) {
|
|
|
|
GST_DEBUG_OBJECT (pad, "peer caps %" GST_PTR_FORMAT, peer_caps);
|
|
|
|
if (gst_caps_is_any (peer_caps)) {
|
|
/* if peer returns ANY caps, return filtered src pad template caps */
|
|
caps = gst_caps_copy (gst_pad_get_pad_template_caps (srcpad));
|
|
} else {
|
|
|
|
/* duplicate caps which contains the composition into one version with
|
|
* the meta and one without. Filter the other caps by the software caps */
|
|
GstCaps *sw_caps = gst_static_caps_get (&sw_template_caps);
|
|
caps = gst_cea_cc_overlay_intersect_by_feature (peer_caps,
|
|
GST_CAPS_FEATURE_META_GST_VIDEO_OVERLAY_COMPOSITION, sw_caps);
|
|
gst_caps_unref (sw_caps);
|
|
}
|
|
|
|
gst_caps_unref (peer_caps);
|
|
|
|
} else {
|
|
/* no peer, our padtemplate is enough then */
|
|
caps = gst_pad_get_pad_template_caps (pad);
|
|
}
|
|
|
|
if (filter) {
|
|
GstCaps *intersection = gst_caps_intersect_full (filter, caps,
|
|
GST_CAPS_INTERSECT_FIRST);
|
|
gst_caps_unref (caps);
|
|
caps = intersection;
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (overlay, "returning %" GST_PTR_FORMAT, caps);
|
|
|
|
return caps;
|
|
}
|
|
|
|
static GstCaps *
|
|
gst_cea_cc_overlay_get_src_caps (GstPad * pad, GstCeaCcOverlay * overlay,
|
|
GstCaps * filter)
|
|
{
|
|
GstPad *sinkpad = overlay->video_sinkpad;
|
|
GstCaps *peer_caps = NULL, *caps = NULL, *overlay_filter = NULL;
|
|
|
|
if (G_UNLIKELY (!overlay))
|
|
return gst_pad_get_pad_template_caps (pad);
|
|
|
|
if (filter) {
|
|
/* duplicate filter caps which contains the composition into one version
|
|
* with the meta and one without. Filter the other caps by the software
|
|
* caps */
|
|
GstCaps *sw_caps = gst_static_caps_get (&sw_template_caps);
|
|
overlay_filter =
|
|
gst_cea_cc_overlay_intersect_by_feature (filter,
|
|
GST_CAPS_FEATURE_META_GST_VIDEO_OVERLAY_COMPOSITION, sw_caps);
|
|
gst_caps_unref (sw_caps);
|
|
}
|
|
|
|
peer_caps = gst_pad_peer_query_caps (sinkpad, overlay_filter);
|
|
|
|
if (overlay_filter)
|
|
gst_caps_unref (overlay_filter);
|
|
|
|
if (peer_caps) {
|
|
|
|
GST_DEBUG_OBJECT (pad, "peer caps %" GST_PTR_FORMAT, peer_caps);
|
|
|
|
if (gst_caps_is_any (peer_caps)) {
|
|
|
|
/* if peer returns ANY caps, return filtered sink pad template caps */
|
|
caps = gst_caps_copy (gst_pad_get_pad_template_caps (sinkpad));
|
|
|
|
} else {
|
|
|
|
/* return upstream caps + composition feature + upstream caps
|
|
* filtered by the software caps. */
|
|
GstCaps *sw_caps = gst_static_caps_get (&sw_template_caps);
|
|
caps = gst_cea_cc_overlay_add_feature_and_intersect (peer_caps,
|
|
GST_CAPS_FEATURE_META_GST_VIDEO_OVERLAY_COMPOSITION, sw_caps);
|
|
gst_caps_unref (sw_caps);
|
|
}
|
|
|
|
gst_caps_unref (peer_caps);
|
|
|
|
} else {
|
|
/* no peer, our padtemplate is enough then */
|
|
caps = gst_pad_get_pad_template_caps (pad);
|
|
}
|
|
|
|
if (filter) {
|
|
GstCaps *intersection;
|
|
|
|
intersection =
|
|
gst_caps_intersect_full (filter, caps, GST_CAPS_INTERSECT_FIRST);
|
|
gst_caps_unref (caps);
|
|
caps = intersection;
|
|
}
|
|
GST_DEBUG_OBJECT (overlay, "returning %" GST_PTR_FORMAT, caps);
|
|
|
|
return caps;
|
|
}
|
|
|
|
/* FIXME: should probably be relative to width/height (adjusted for PAR) */
|
|
#define BOX_XPAD 6
|
|
#define BOX_YPAD 6
|
|
|
|
static GstFlowReturn
|
|
gst_cea_cc_overlay_push_frame (GstCeaCcOverlay * overlay,
|
|
GstBuffer * video_frame)
|
|
{
|
|
GstVideoFrame frame;
|
|
|
|
if (overlay->current_composition == NULL)
|
|
goto done;
|
|
GST_LOG_OBJECT (overlay, "gst_cea_cc_overlay_push_frame");
|
|
|
|
if (gst_pad_check_reconfigure (overlay->srcpad))
|
|
gst_cea_cc_overlay_negotiate (overlay, NULL);
|
|
|
|
video_frame = gst_buffer_make_writable (video_frame);
|
|
|
|
if (overlay->attach_compo_to_buffer) {
|
|
GST_DEBUG_OBJECT (overlay, "Attaching text overlay image to video buffer");
|
|
gst_buffer_add_video_overlay_composition_meta (video_frame,
|
|
overlay->current_composition);
|
|
goto done;
|
|
}
|
|
|
|
if (!gst_video_frame_map (&frame, &overlay->info, video_frame,
|
|
GST_MAP_READWRITE))
|
|
goto invalid_frame;
|
|
|
|
gst_video_overlay_composition_blend (overlay->current_composition, &frame);
|
|
|
|
gst_video_frame_unmap (&frame);
|
|
|
|
done:
|
|
|
|
return gst_pad_push (overlay->srcpad, video_frame);
|
|
|
|
/* ERRORS */
|
|
invalid_frame:
|
|
{
|
|
gst_buffer_unref (video_frame);
|
|
return GST_FLOW_OK;
|
|
}
|
|
}
|
|
|
|
static GstPadLinkReturn
|
|
gst_cea_cc_overlay_cc_pad_link (GstPad * pad, GstObject * parent, GstPad * peer)
|
|
{
|
|
GstCeaCcOverlay *overlay;
|
|
|
|
overlay = GST_CEA_CC_OVERLAY (parent);
|
|
if (G_UNLIKELY (!overlay))
|
|
return GST_PAD_LINK_REFUSED;
|
|
|
|
GST_DEBUG_OBJECT (overlay, "Closed Caption pad linked");
|
|
|
|
overlay->cc_pad_linked = TRUE;
|
|
|
|
return GST_PAD_LINK_OK;
|
|
}
|
|
|
|
static void
|
|
gst_cea_cc_overlay_cc_pad_unlink (GstPad * pad, GstObject * parent)
|
|
{
|
|
GstCeaCcOverlay *overlay;
|
|
|
|
/* don't use gst_pad_get_parent() here, will deadlock */
|
|
overlay = GST_CEA_CC_OVERLAY (parent);
|
|
|
|
GST_DEBUG_OBJECT (overlay, "Closed Caption pad unlinked");
|
|
|
|
overlay->cc_pad_linked = FALSE;
|
|
|
|
gst_segment_init (&overlay->cc_segment, GST_FORMAT_UNDEFINED);
|
|
}
|
|
|
|
static gboolean
|
|
gst_cea_cc_overlay_cc_event (GstPad * pad, GstObject * parent, GstEvent * event)
|
|
{
|
|
gboolean ret = FALSE;
|
|
GstCeaCcOverlay *overlay = NULL;
|
|
|
|
overlay = GST_CEA_CC_OVERLAY (parent);
|
|
|
|
GST_LOG_OBJECT (overlay, "received event %s", GST_EVENT_TYPE_NAME (event));
|
|
|
|
switch (GST_EVENT_TYPE (event)) {
|
|
case GST_EVENT_CAPS:
|
|
{
|
|
GstCaps *caps;
|
|
GstStructure *st;
|
|
const gchar *cctype;
|
|
|
|
gst_event_parse_caps (event, &caps);
|
|
st = gst_caps_get_structure (caps, 0);
|
|
cctype = gst_structure_get_string (st, "format");
|
|
overlay->is_cdp = !g_strcmp0 (cctype, "cdp");
|
|
ret = TRUE;
|
|
break;
|
|
}
|
|
case GST_EVENT_SEGMENT:
|
|
{
|
|
const GstSegment *segment;
|
|
|
|
overlay->cc_eos = FALSE;
|
|
|
|
gst_event_parse_segment (event, &segment);
|
|
|
|
if (segment->format == GST_FORMAT_TIME) {
|
|
GST_CEA_CC_OVERLAY_LOCK (overlay);
|
|
gst_segment_copy_into (segment, &overlay->cc_segment);
|
|
GST_DEBUG_OBJECT (overlay, "TEXT SEGMENT now: %" GST_SEGMENT_FORMAT,
|
|
&overlay->cc_segment);
|
|
GST_CEA_CC_OVERLAY_UNLOCK (overlay);
|
|
} else {
|
|
GST_ELEMENT_WARNING (overlay, STREAM, MUX, (NULL),
|
|
("received non-TIME newsegment event on text input"));
|
|
}
|
|
|
|
ret = TRUE;
|
|
|
|
/* wake up the video chain, it might be waiting for a text buffer or
|
|
* a text segment update */
|
|
GST_CEA_CC_OVERLAY_LOCK (overlay);
|
|
GST_CEA_CC_OVERLAY_BROADCAST (overlay);
|
|
GST_CEA_CC_OVERLAY_UNLOCK (overlay);
|
|
break;
|
|
}
|
|
case GST_EVENT_GAP:
|
|
{
|
|
GstClockTime start, duration;
|
|
|
|
gst_event_parse_gap (event, &start, &duration);
|
|
if (GST_CLOCK_TIME_IS_VALID (duration))
|
|
start += duration;
|
|
/* we do not expect another buffer until after gap,
|
|
* so that is our position now */
|
|
overlay->cc_segment.position = start;
|
|
|
|
/* wake up the video chain, it might be waiting for a text buffer or
|
|
* a text segment update */
|
|
GST_CEA_CC_OVERLAY_LOCK (overlay);
|
|
GST_CEA_CC_OVERLAY_BROADCAST (overlay);
|
|
GST_CEA_CC_OVERLAY_UNLOCK (overlay);
|
|
|
|
ret = TRUE;
|
|
break;
|
|
}
|
|
case GST_EVENT_FLUSH_STOP:
|
|
GST_CEA_CC_OVERLAY_LOCK (overlay);
|
|
GST_INFO_OBJECT (overlay, "text flush stop");
|
|
overlay->cc_flushing = FALSE;
|
|
overlay->cc_eos = FALSE;
|
|
gst_cea_cc_overlay_pop_text (overlay);
|
|
gst_segment_init (&overlay->cc_segment, GST_FORMAT_TIME);
|
|
GST_CEA_CC_OVERLAY_UNLOCK (overlay);
|
|
ret = TRUE;
|
|
break;
|
|
case GST_EVENT_FLUSH_START:
|
|
GST_CEA_CC_OVERLAY_LOCK (overlay);
|
|
GST_INFO_OBJECT (overlay, "text flush start");
|
|
overlay->cc_flushing = TRUE;
|
|
GST_CEA_CC_OVERLAY_BROADCAST (overlay);
|
|
GST_CEA_CC_OVERLAY_UNLOCK (overlay);
|
|
ret = TRUE;
|
|
break;
|
|
case GST_EVENT_EOS:
|
|
GST_CEA_CC_OVERLAY_LOCK (overlay);
|
|
overlay->cc_eos = TRUE;
|
|
GST_INFO_OBJECT (overlay, "closed caption EOS");
|
|
/* wake up the video chain, it might be waiting for a text buffer or
|
|
* a text segment update */
|
|
GST_CEA_CC_OVERLAY_BROADCAST (overlay);
|
|
GST_CEA_CC_OVERLAY_UNLOCK (overlay);
|
|
ret = TRUE;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (ret) {
|
|
gst_event_unref (event);
|
|
} else {
|
|
ret = gst_pad_event_default (pad, parent, event);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static gboolean
|
|
gst_cea_cc_overlay_video_event (GstPad * pad, GstObject * parent,
|
|
GstEvent * event)
|
|
{
|
|
gboolean ret = FALSE;
|
|
GstCeaCcOverlay *overlay = NULL;
|
|
|
|
overlay = GST_CEA_CC_OVERLAY (parent);
|
|
|
|
GST_DEBUG_OBJECT (pad, "received event %s", GST_EVENT_TYPE_NAME (event));
|
|
|
|
switch (GST_EVENT_TYPE (event)) {
|
|
case GST_EVENT_CAPS:
|
|
{
|
|
GstCaps *caps;
|
|
|
|
gst_event_parse_caps (event, &caps);
|
|
ret = gst_cea_cc_overlay_setcaps (overlay, caps);
|
|
gst_event_unref (event);
|
|
break;
|
|
}
|
|
case GST_EVENT_SEGMENT:
|
|
{
|
|
const GstSegment *segment;
|
|
|
|
GST_DEBUG_OBJECT (overlay, "received new segment");
|
|
|
|
gst_event_parse_segment (event, &segment);
|
|
|
|
if (segment->format == GST_FORMAT_TIME) {
|
|
GST_DEBUG_OBJECT (overlay, "VIDEO SEGMENT now: %" GST_SEGMENT_FORMAT,
|
|
&overlay->segment);
|
|
|
|
gst_segment_copy_into (segment, &overlay->segment);
|
|
} else {
|
|
GST_ELEMENT_WARNING (overlay, STREAM, MUX, (NULL),
|
|
("received non-TIME newsegment event on video input"));
|
|
}
|
|
|
|
ret = gst_pad_event_default (pad, parent, event);
|
|
break;
|
|
}
|
|
case GST_EVENT_EOS:
|
|
GST_CEA_CC_OVERLAY_LOCK (overlay);
|
|
GST_INFO_OBJECT (overlay, "video EOS");
|
|
overlay->video_eos = TRUE;
|
|
GST_CEA_CC_OVERLAY_UNLOCK (overlay);
|
|
ret = gst_pad_event_default (pad, parent, event);
|
|
break;
|
|
case GST_EVENT_FLUSH_START:
|
|
GST_CEA_CC_OVERLAY_LOCK (overlay);
|
|
GST_INFO_OBJECT (overlay, "video flush start");
|
|
overlay->video_flushing = TRUE;
|
|
GST_CEA_CC_OVERLAY_BROADCAST (overlay);
|
|
GST_CEA_CC_OVERLAY_UNLOCK (overlay);
|
|
ret = gst_pad_event_default (pad, parent, event);
|
|
break;
|
|
case GST_EVENT_FLUSH_STOP:
|
|
GST_CEA_CC_OVERLAY_LOCK (overlay);
|
|
GST_INFO_OBJECT (overlay, "video flush stop");
|
|
overlay->video_flushing = FALSE;
|
|
overlay->video_eos = FALSE;
|
|
gst_segment_init (&overlay->segment, GST_FORMAT_TIME);
|
|
GST_CEA_CC_OVERLAY_UNLOCK (overlay);
|
|
ret = gst_pad_event_default (pad, parent, event);
|
|
break;
|
|
default:
|
|
ret = gst_pad_event_default (pad, parent, event);
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static gboolean
|
|
gst_cea_cc_overlay_video_query (GstPad * pad, GstObject * parent,
|
|
GstQuery * query)
|
|
{
|
|
gboolean ret = FALSE;
|
|
GstCeaCcOverlay *overlay;
|
|
|
|
overlay = GST_CEA_CC_OVERLAY (parent);
|
|
|
|
switch (GST_QUERY_TYPE (query)) {
|
|
case GST_QUERY_CAPS:
|
|
{
|
|
GstCaps *filter, *caps;
|
|
|
|
gst_query_parse_caps (query, &filter);
|
|
caps = gst_cea_cc_overlay_get_videosink_caps (pad, overlay, filter);
|
|
gst_query_set_caps_result (query, caps);
|
|
gst_caps_unref (caps);
|
|
ret = TRUE;
|
|
break;
|
|
}
|
|
default:
|
|
ret = gst_pad_query_default (pad, parent, query);
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* Called with lock held */
|
|
static void
|
|
gst_cea_cc_overlay_pop_text (GstCeaCcOverlay * overlay)
|
|
{
|
|
g_return_if_fail (GST_IS_CEA_CC_OVERLAY (overlay));
|
|
|
|
if (GST_CLOCK_TIME_IS_VALID (overlay->current_comp_start_time)
|
|
&& overlay->current_composition) {
|
|
GST_DEBUG_OBJECT (overlay, "releasing composition %p",
|
|
overlay->current_composition);
|
|
gst_video_overlay_composition_unref (overlay->current_composition);
|
|
overlay->current_composition = NULL;
|
|
overlay->current_comp_start_time = GST_CLOCK_TIME_NONE;
|
|
}
|
|
|
|
/* Let the text task know we used that buffer */
|
|
GST_CEA_CC_OVERLAY_BROADCAST (overlay);
|
|
}
|
|
|
|
static void
|
|
gst_cea_cc_overlay_image_to_argb (guchar * pixbuf,
|
|
cea708Window * window, int stride)
|
|
{
|
|
int i, j;
|
|
guchar *p, *bitp;
|
|
int width, height;
|
|
|
|
width = window->image_width;
|
|
height = window->image_height;
|
|
|
|
for (i = 0; i < height; i++) {
|
|
p = pixbuf + i * stride;
|
|
bitp = window->text_image + i * width * 4;
|
|
|
|
for (j = 0; j < width; j++) {
|
|
p[0] = bitp[CAIRO_ARGB_A];
|
|
p[1] = bitp[CAIRO_ARGB_R];
|
|
p[2] = bitp[CAIRO_ARGB_G];
|
|
p[3] = bitp[CAIRO_ARGB_B];
|
|
|
|
/* Cairo uses pre-multiplied ARGB, unpremultiply it */
|
|
CAIRO_UNPREMULTIPLY (p[0], p[1], p[2], p[3]);
|
|
|
|
bitp += 4;
|
|
p += 4;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_cea_cc_overlay_image_to_ayuv (guchar * pixbuf,
|
|
cea708Window * window, int stride)
|
|
{
|
|
int y; /* text bitmap coordinates */
|
|
guchar *p, *bitp;
|
|
guchar a, r, g, b;
|
|
int width, height;
|
|
|
|
width = window->image_width;
|
|
height = window->image_height;
|
|
|
|
for (y = 0; y < height; y++) {
|
|
int n;
|
|
p = pixbuf + y * stride;
|
|
bitp = window->text_image + y * width * 4;
|
|
|
|
for (n = 0; n < width; n++) {
|
|
b = bitp[CAIRO_ARGB_B];
|
|
g = bitp[CAIRO_ARGB_G];
|
|
r = bitp[CAIRO_ARGB_R];
|
|
a = bitp[CAIRO_ARGB_A];
|
|
bitp += 4;
|
|
|
|
/* Cairo uses pre-multiplied ARGB, unpremultiply it */
|
|
CAIRO_UNPREMULTIPLY (a, r, g, b);
|
|
|
|
*p++ = a;
|
|
*p++ = CLAMP ((int) (((19595 * r) >> 16) + ((38470 * g) >> 16) +
|
|
((7471 * b) >> 16)), 0, 255);
|
|
*p++ = CLAMP ((int) (-((11059 * r) >> 16) - ((21709 * g) >> 16) +
|
|
((32768 * b) >> 16) + 128), 0, 255);
|
|
*p++ = CLAMP ((int) (((32768 * r) >> 16) - ((27439 * g) >> 16) -
|
|
((5329 * b) >> 16) + 128), 0, 255);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_cea_cc_overlay_create_and_push_buffer (GstCeaCcOverlay * overlay)
|
|
{
|
|
Cea708Dec *decoder = overlay->decoder;
|
|
GstBuffer *outbuf;
|
|
GstMapInfo map;
|
|
guint8 *window_image;
|
|
gint n;
|
|
guint window_id;
|
|
cea708Window *window;
|
|
guint v_anchor = 0;
|
|
guint h_anchor = 0;
|
|
GstVideoOverlayComposition *comp = NULL;
|
|
GstVideoOverlayRectangle *rect = NULL;
|
|
GST_CEA_CC_OVERLAY_LOCK (overlay);
|
|
|
|
for (window_id = 0; window_id < 8; window_id++) {
|
|
window = decoder->cc_windows[window_id];
|
|
|
|
if (!window->updated) {
|
|
continue;
|
|
}
|
|
if (!window->deleted && window->visible && window->text_image != NULL) {
|
|
GST_DEBUG_OBJECT (overlay, "Allocating buffer");
|
|
outbuf =
|
|
gst_buffer_new_and_alloc (window->image_width *
|
|
window->image_height * 4);
|
|
gst_buffer_map (outbuf, &map, GST_MAP_WRITE);
|
|
window_image = map.data;
|
|
if (decoder->use_ARGB) {
|
|
memset (window_image, 0,
|
|
window->image_width * window->image_height * 4);
|
|
gst_buffer_add_video_meta (outbuf, GST_VIDEO_FRAME_FLAG_NONE,
|
|
GST_VIDEO_OVERLAY_COMPOSITION_FORMAT_RGB, window->image_width,
|
|
window->image_height);
|
|
} else {
|
|
for (n = 0; n < window->image_width * window->image_height; n++) {
|
|
window_image[n * 4] = window_image[n * 4 + 1] = 0;
|
|
window_image[n * 4 + 2] = window_image[n * 4 + 3] = 128;
|
|
}
|
|
gst_buffer_add_video_meta (outbuf, GST_VIDEO_FRAME_FLAG_NONE,
|
|
GST_VIDEO_OVERLAY_COMPOSITION_FORMAT_YUV, window->image_width,
|
|
window->image_height);
|
|
}
|
|
|
|
v_anchor = window->screen_vertical * overlay->height / 100;
|
|
switch (overlay->default_window_h_pos) {
|
|
case GST_CEA_CC_OVERLAY_WIN_H_LEFT:
|
|
window->h_offset = 0;
|
|
break;
|
|
case GST_CEA_CC_OVERLAY_WIN_H_CENTER:
|
|
window->h_offset = (overlay->width - window->image_width) / 2;
|
|
break;
|
|
case GST_CEA_CC_OVERLAY_WIN_H_RIGHT:
|
|
window->h_offset = overlay->width - window->image_width;
|
|
break;
|
|
case GST_CEA_CC_OVERLAY_WIN_H_AUTO:
|
|
default:
|
|
switch (window->anchor_point) {
|
|
case ANCHOR_PT_TOP_LEFT:
|
|
case ANCHOR_PT_MIDDLE_LEFT:
|
|
case ANCHOR_PT_BOTTOM_LEFT:
|
|
window->h_offset = h_anchor;
|
|
break;
|
|
|
|
case ANCHOR_PT_TOP_CENTER:
|
|
case ANCHOR_PT_CENTER:
|
|
case ANCHOR_PT_BOTTOM_CENTER:
|
|
window->h_offset = h_anchor - window->image_width / 2;
|
|
break;
|
|
|
|
case ANCHOR_PT_TOP_RIGHT:
|
|
case ANCHOR_PT_MIDDLE_RIGHT:
|
|
case ANCHOR_PT_BOTTOM_RIGHT:
|
|
window->h_offset = h_anchor - window->image_width;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
|
|
switch (window->anchor_point) {
|
|
case ANCHOR_PT_TOP_LEFT:
|
|
case ANCHOR_PT_TOP_CENTER:
|
|
case ANCHOR_PT_TOP_RIGHT:
|
|
window->v_offset = v_anchor;
|
|
break;
|
|
|
|
case ANCHOR_PT_MIDDLE_LEFT:
|
|
case ANCHOR_PT_CENTER:
|
|
case ANCHOR_PT_MIDDLE_RIGHT:
|
|
window->v_offset = v_anchor - window->image_height / 2;
|
|
break;
|
|
|
|
case ANCHOR_PT_BOTTOM_LEFT:
|
|
case ANCHOR_PT_BOTTOM_CENTER:
|
|
case ANCHOR_PT_BOTTOM_RIGHT:
|
|
window->v_offset = v_anchor - window->image_height;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
if (decoder->use_ARGB) {
|
|
gst_cea_cc_overlay_image_to_argb (window_image, window,
|
|
window->image_width * 4);
|
|
} else {
|
|
gst_cea_cc_overlay_image_to_ayuv (window_image, window,
|
|
window->image_width * 4);
|
|
}
|
|
gst_buffer_unmap (outbuf, &map);
|
|
GST_INFO_OBJECT (overlay,
|
|
"window->anchor_point=%d,v_anchor=%d,h_anchor=%d,window->image_height=%d,window->image_width=%d, window->v_offset=%d, window->h_offset=%d,window->justify_mode=%d",
|
|
window->anchor_point, v_anchor, h_anchor, window->image_height,
|
|
window->image_width, window->v_offset, window->h_offset,
|
|
window->justify_mode);
|
|
rect =
|
|
gst_video_overlay_rectangle_new_raw (outbuf, window->h_offset,
|
|
window->v_offset, window->image_width, window->image_height, 0);
|
|
if (comp == NULL) {
|
|
comp = gst_video_overlay_composition_new (rect);
|
|
} else {
|
|
gst_video_overlay_composition_add_rectangle (comp, rect);
|
|
}
|
|
gst_video_overlay_rectangle_unref (rect);
|
|
gst_buffer_unref (outbuf);
|
|
}
|
|
}
|
|
|
|
/* Wait for the previous buffer to go away */
|
|
if (GST_CLOCK_TIME_IS_VALID (overlay->current_comp_start_time)) {
|
|
overlay->next_composition = comp;
|
|
overlay->next_comp_start_time = decoder->current_time;
|
|
GST_DEBUG_OBJECT (overlay,
|
|
"wait for render next %p, current is %p BUFFER: next ts=%"
|
|
GST_TIME_FORMAT ",current ts=%" GST_TIME_FORMAT,
|
|
overlay->next_composition, overlay->current_composition,
|
|
GST_TIME_ARGS (overlay->next_comp_start_time),
|
|
GST_TIME_ARGS (overlay->current_comp_start_time));
|
|
|
|
GST_DEBUG_OBJECT (overlay, "has a closed caption buffer queued, waiting");
|
|
GST_CEA_CC_OVERLAY_WAIT (overlay);
|
|
GST_DEBUG_OBJECT (overlay, "resuming");
|
|
if (overlay->cc_flushing) {
|
|
GST_CEA_CC_OVERLAY_UNLOCK (overlay);
|
|
return;
|
|
}
|
|
}
|
|
|
|
overlay->next_composition = NULL;
|
|
overlay->next_comp_start_time = GST_CLOCK_TIME_NONE;
|
|
overlay->current_composition = comp;
|
|
overlay->current_comp_start_time = decoder->current_time;
|
|
GST_DEBUG_OBJECT (overlay, "T: %" GST_TIME_FORMAT,
|
|
GST_TIME_ARGS (overlay->current_comp_start_time));
|
|
overlay->need_update = FALSE;
|
|
|
|
/* in case the video chain is waiting for a text buffer, wake it up */
|
|
GST_CEA_CC_OVERLAY_BROADCAST (overlay);
|
|
GST_CEA_CC_OVERLAY_UNLOCK (overlay);
|
|
}
|
|
|
|
static void
|
|
gst_cea_cc_overlay_process_packet (GstCeaCcOverlay * overlay, guint8 cc_type)
|
|
{
|
|
gint16 *index = NULL;
|
|
guint8 *buffer = NULL;
|
|
guint8 *dtvcc_buffer = NULL;
|
|
gboolean need_render = FALSE;
|
|
|
|
switch (cc_type) {
|
|
case CCTYPE_608_CC1:
|
|
case CCTYPE_608_CC2:
|
|
index = &overlay->cea608_index[cc_type];
|
|
buffer = overlay->cea608_buffer[cc_type];
|
|
break;
|
|
|
|
case CCTYPE_708_ADD:
|
|
case CCTYPE_708_START:
|
|
index = &overlay->cea708_index;
|
|
buffer = overlay->cea708_buffer;
|
|
break;
|
|
default:
|
|
GST_ERROR_OBJECT (overlay,
|
|
"attempted to process packet for unknown cc_type %d", cc_type);
|
|
return;
|
|
}
|
|
|
|
if (*index > 0) {
|
|
/*TODO: in future need add 608 decoder, currently only deal with 708 */
|
|
if (cc_type == CCTYPE_708_ADD || cc_type == CCTYPE_708_START) {
|
|
GST_LOG_OBJECT (overlay,
|
|
"called - buf[%" G_GINT16_FORMAT "] = %02X:%02X:%02X:%02X", *index,
|
|
buffer[0], buffer[1], buffer[2], buffer[3]);
|
|
dtvcc_buffer = g_malloc0 (*index + 1);
|
|
memcpy (dtvcc_buffer, buffer, *index);
|
|
need_render =
|
|
gst_cea708dec_process_dtvcc_packet (overlay->decoder, dtvcc_buffer,
|
|
*index);
|
|
g_free (dtvcc_buffer);
|
|
if (need_render)
|
|
gst_cea_cc_overlay_create_and_push_buffer (overlay);
|
|
}
|
|
}
|
|
*index = 0;
|
|
}
|
|
|
|
|
|
/**
|
|
* gst_cea_cc_overlay_user_data_decode:
|
|
* @overlay: The #GstCeaCcOverlay
|
|
* @user_data: The #GstMpegVideoCCData to decode
|
|
*
|
|
* decode closed caption data and render when necessary
|
|
* in struct GstMpegVideoCCData type's user_data's data field, 3 byte's data construct 1 cc_data_pkt
|
|
*
|
|
* A cc_data_pkt is 3 bytes as follows:
|
|
* -------------------------------------------
|
|
* 5 bits (b7-b3) marker_bits (should be all 1's)
|
|
* 1 bit (b2) cc_valid
|
|
* 2 bits (b1-b0) cc_type (bslbf)
|
|
* 8 bits cc_data_1 (bslbf)
|
|
* 8 bits cc_data_2 (bslbf)
|
|
*
|
|
* If cc_valid != 1, then ignore this packet
|
|
*
|
|
* cc_type has these values:
|
|
* 0 NTSC_CC_FIELD_1 - CEA-608
|
|
* 1 NTSC_CC_FIELD_2 - CEA-608
|
|
* 2 DTVCC_PACKET_DATA - CEA-708
|
|
* 3 DTVCC_PACKET_START - CEA-708
|
|
*
|
|
* DTVCC packet (aka. caption channel packet)
|
|
* This is formed by accumulating cc_data_1/cc_data_2 from each cc_data_pkt
|
|
* starting with a packet where cc_type = 3, and ending with a packet
|
|
* where again cc_type = 3 (start of next buffer), or cc_valid=0 && cc_type=2
|
|
* DTVCC packet's structure is:
|
|
* --------------------------------------------------------------------------
|
|
* 2 bits (b6-b7) sequence_number
|
|
* 6 bits (b0-b5) packet_size
|
|
* ((packet_size*2-1)&0xFF) * 8 bits packet_data (Service Block)
|
|
*/
|
|
static void
|
|
gst_cea_cc_overlay_user_data_decode (GstCeaCcOverlay * overlay,
|
|
const guint8 * ccdata, gsize ccsize)
|
|
{
|
|
guint8 temp;
|
|
guint8 cc_count;
|
|
guint i;
|
|
guint8 cc_type;
|
|
guint8 cc_valid;
|
|
guint8 cc_data[2];
|
|
|
|
cc_count = ccsize / 3;
|
|
|
|
for (i = 0; i < cc_count; i++) {
|
|
temp = *ccdata++;
|
|
cc_data[0] = *ccdata++;
|
|
cc_data[1] = *ccdata++;
|
|
cc_valid = (temp & CCTYPE_VALID_MASK) ? TRUE : FALSE;
|
|
cc_type = (temp & CCTYPE_TYPE_MASK);
|
|
|
|
GST_LOG_OBJECT (overlay, "cc_data_pkt(%d): cc_valid=%d cc_type=%d "
|
|
"cc_data[0]=0x%02X cc_data[1]=0x%02X",
|
|
i, cc_valid, cc_type, cc_data[0], cc_data[1]);
|
|
|
|
/* accumulate dvtcc packet */
|
|
switch (cc_type) {
|
|
case CCTYPE_608_CC1:
|
|
case CCTYPE_608_CC2:
|
|
if (cc_valid) {
|
|
if (overlay->cea608_index[cc_type] <= DTVCC_LENGTH - 2) {
|
|
size_t j;
|
|
for (j = 0; j < 2; ++j) {
|
|
if ((cc_data[j] < ' ') || (cc_data[j] > '~')) {
|
|
gst_cea_cc_overlay_process_packet (overlay, cc_type);
|
|
}
|
|
overlay->cea608_buffer[cc_type][overlay->
|
|
cea608_index[cc_type]++] = cc_data[j];
|
|
}
|
|
} else {
|
|
GST_ERROR_OBJECT (overlay, "cea608_buffer[%d] overflow!", cc_type);
|
|
}
|
|
}
|
|
break;
|
|
|
|
case CCTYPE_708_ADD:
|
|
case CCTYPE_708_START:
|
|
if (cc_valid) {
|
|
if (cc_type == CCTYPE_708_START) {
|
|
/* The previous packet is complete */
|
|
gst_cea_cc_overlay_process_packet (overlay, cc_type);
|
|
}
|
|
/* Add on to the current DTVCC packet */
|
|
if (overlay->cea708_index <= DTVCC_LENGTH - 2) {
|
|
overlay->cea708_buffer[overlay->cea708_index++] = cc_data[0];
|
|
overlay->cea708_buffer[overlay->cea708_index++] = cc_data[1];
|
|
} else {
|
|
GST_ERROR_OBJECT (overlay, "cea708_buffer overflow!");
|
|
}
|
|
} else if (cc_type == CCTYPE_708_ADD) {
|
|
/* This packet should be ignored, but if there is a current */
|
|
/* DTVCC packet then this is the end. */
|
|
gst_cea_cc_overlay_process_packet (overlay, cc_type);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* FIXME : Move to GstVideo ANC/CC helper library */
|
|
static gboolean
|
|
extract_ccdata_from_cdp (const guint8 * indata, gsize insize,
|
|
const guint8 ** ccdata, gsize * ccsize)
|
|
{
|
|
GstByteReader br;
|
|
guint8 cdp_length;
|
|
guint8 flags;
|
|
#ifndef GST_DISABLE_GST_DEBUG
|
|
guint8 framerate_code;
|
|
guint16 seqhdr;
|
|
#endif
|
|
|
|
GST_MEMDUMP ("CDP", indata, insize);
|
|
|
|
gst_byte_reader_init (&br, indata, insize);
|
|
|
|
/* The smallest valid CDP we are interested in is 7 (header) + 2 (cc
|
|
* section) + 4 (footer) bytes long */
|
|
if (gst_byte_reader_get_remaining (&br) < 13)
|
|
return FALSE;
|
|
|
|
/* Check header */
|
|
if (gst_byte_reader_get_uint16_be_unchecked (&br) != 0x9669) {
|
|
GST_WARNING ("Invalid CDP header");
|
|
return FALSE;
|
|
}
|
|
cdp_length = gst_byte_reader_get_uint8_unchecked (&br);
|
|
if (cdp_length > insize) {
|
|
GST_WARNING ("CDP too small (need %d bytes, have %" G_GSIZE_FORMAT ")",
|
|
cdp_length, insize);
|
|
return FALSE;
|
|
}
|
|
#ifndef GST_DISABLE_GST_DEBUG
|
|
framerate_code = gst_byte_reader_get_uint8_unchecked (&br) >> 4;
|
|
#else
|
|
gst_byte_reader_skip (&br, 1);
|
|
#endif
|
|
flags = gst_byte_reader_get_uint8_unchecked (&br);
|
|
#ifndef GST_DISABLE_GST_DEBUG
|
|
seqhdr = gst_byte_reader_get_uint16_be_unchecked (&br);
|
|
#else
|
|
gst_byte_reader_skip (&br, 2);
|
|
#endif
|
|
|
|
GST_DEBUG
|
|
("framerate_code : 0x%02x , flags : 0x%02x , sequencer_counter : %u",
|
|
framerate_code, flags, seqhdr);
|
|
|
|
/* Skip timecode if present */
|
|
if (flags & 0x80) {
|
|
GST_LOG ("Skipping timecode section");
|
|
gst_byte_reader_skip (&br, 5);
|
|
}
|
|
|
|
/* cc data */
|
|
if (flags & 0x40) {
|
|
guint8 ccid, cc_count;
|
|
if (!gst_byte_reader_get_uint8 (&br, &ccid) ||
|
|
!gst_byte_reader_get_uint8 (&br, &cc_count))
|
|
return FALSE;
|
|
if (ccid != 0x72) {
|
|
GST_WARNING ("Invalid ccdata_id (expected 0x72, got 0x%02x)", ccid);
|
|
return FALSE;
|
|
}
|
|
cc_count &= 0x1f;
|
|
if (!gst_byte_reader_get_data (&br, cc_count * 3, ccdata)) {
|
|
GST_WARNING ("Not enough ccdata");
|
|
*ccdata = NULL;
|
|
*ccsize = 0;
|
|
return FALSE;
|
|
}
|
|
*ccsize = cc_count * 3;
|
|
}
|
|
|
|
/* FIXME : Parse/validate the rest of the CDP ! */
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* We receive text buffers here. If they are out of segment we just ignore them.
|
|
If the buffer is in our segment we keep it internally except if another one
|
|
is already waiting here, in that case we wait that it gets kicked out */
|
|
static GstFlowReturn
|
|
gst_cea_cc_overlay_cc_chain (GstPad * pad, GstObject * parent,
|
|
GstBuffer * buffer)
|
|
{
|
|
GstFlowReturn ret = GST_FLOW_OK;
|
|
GstCeaCcOverlay *overlay = (GstCeaCcOverlay *) parent;
|
|
gboolean in_seg = FALSE;
|
|
guint64 clip_start = 0, clip_stop = 0;
|
|
|
|
GST_CEA_CC_OVERLAY_LOCK (overlay);
|
|
|
|
if (overlay->cc_flushing) {
|
|
GST_CEA_CC_OVERLAY_UNLOCK (overlay);
|
|
ret = GST_FLOW_FLUSHING;
|
|
GST_LOG_OBJECT (overlay, "closed caption flushing");
|
|
goto beach;
|
|
}
|
|
|
|
if (overlay->cc_eos) {
|
|
GST_CEA_CC_OVERLAY_UNLOCK (overlay);
|
|
ret = GST_FLOW_EOS;
|
|
GST_LOG_OBJECT (overlay, "closed caption EOS");
|
|
goto beach;
|
|
}
|
|
|
|
GST_LOG_OBJECT (overlay, "%" GST_SEGMENT_FORMAT " BUFFER: ts=%"
|
|
GST_TIME_FORMAT ", end=%" GST_TIME_FORMAT, &overlay->segment,
|
|
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer)),
|
|
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer) +
|
|
GST_BUFFER_DURATION (buffer)));
|
|
|
|
if (G_LIKELY (GST_BUFFER_TIMESTAMP_IS_VALID (buffer))) {
|
|
GstClockTime stop;
|
|
|
|
if (G_LIKELY (GST_BUFFER_DURATION_IS_VALID (buffer)))
|
|
stop = GST_BUFFER_TIMESTAMP (buffer) + GST_BUFFER_DURATION (buffer);
|
|
else
|
|
stop = GST_CLOCK_TIME_NONE;
|
|
|
|
in_seg = gst_segment_clip (&overlay->cc_segment, GST_FORMAT_TIME,
|
|
GST_BUFFER_TIMESTAMP (buffer), stop, &clip_start, &clip_stop);
|
|
GST_LOG_OBJECT (overlay, "stop:%" GST_TIME_FORMAT ", in_seg: %d",
|
|
GST_TIME_ARGS (stop), in_seg);
|
|
} else {
|
|
in_seg = TRUE;
|
|
}
|
|
|
|
|
|
if (in_seg) {
|
|
GstMapInfo buf_map = { 0 };
|
|
const guint8 *ccdata = NULL;
|
|
gsize ccsize = 0;
|
|
|
|
overlay->cc_segment.position = clip_start;
|
|
GST_CEA_CC_OVERLAY_UNLOCK (overlay);
|
|
|
|
gst_buffer_map (buffer, &buf_map, GST_MAP_READ);
|
|
if (overlay->is_cdp) {
|
|
extract_ccdata_from_cdp (buf_map.data, buf_map.size, &ccdata, &ccsize);
|
|
} else {
|
|
ccdata = buf_map.data;
|
|
ccsize = buf_map.size;
|
|
}
|
|
if (ccsize) {
|
|
gst_cea_cc_overlay_user_data_decode (overlay, ccdata, ccsize);
|
|
overlay->decoder->current_time = GST_BUFFER_PTS (buffer);
|
|
}
|
|
gst_buffer_unmap (buffer, &buf_map);
|
|
} else {
|
|
GST_CEA_CC_OVERLAY_UNLOCK (overlay);
|
|
}
|
|
|
|
beach:
|
|
gst_buffer_unref (buffer);
|
|
return ret;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_cea_cc_overlay_video_chain (GstPad * pad, GstObject * parent,
|
|
GstBuffer * buffer)
|
|
{
|
|
GstCeaCcOverlay *overlay;
|
|
GstFlowReturn ret = GST_FLOW_OK;
|
|
gboolean in_seg = FALSE;
|
|
guint64 start, stop, clip_start = 0, clip_stop = 0;
|
|
|
|
overlay = GST_CEA_CC_OVERLAY (parent);
|
|
|
|
if (!GST_BUFFER_TIMESTAMP_IS_VALID (buffer))
|
|
goto missing_timestamp;
|
|
|
|
/* ignore buffers that are outside of the current segment */
|
|
start = GST_BUFFER_TIMESTAMP (buffer);
|
|
|
|
if (!GST_BUFFER_DURATION_IS_VALID (buffer)) {
|
|
stop = GST_CLOCK_TIME_NONE;
|
|
} else {
|
|
stop = start + GST_BUFFER_DURATION (buffer);
|
|
}
|
|
|
|
GST_LOG_OBJECT (overlay, "%" GST_SEGMENT_FORMAT " BUFFER: ts=%"
|
|
GST_TIME_FORMAT ", end=%" GST_TIME_FORMAT, &overlay->segment,
|
|
GST_TIME_ARGS (start), GST_TIME_ARGS (stop));
|
|
|
|
/* segment_clip() will adjust start unconditionally to segment_start if
|
|
* no stop time is provided, so handle this ourselves */
|
|
if (stop == GST_CLOCK_TIME_NONE && start < overlay->segment.start)
|
|
goto out_of_segment;
|
|
|
|
in_seg = gst_segment_clip (&overlay->segment, GST_FORMAT_TIME, start, stop,
|
|
&clip_start, &clip_stop);
|
|
|
|
if (!in_seg)
|
|
goto out_of_segment;
|
|
|
|
/* if the buffer is only partially in the segment, fix up stamps */
|
|
if (clip_start != start || (stop != -1 && clip_stop != stop)) {
|
|
GST_DEBUG_OBJECT (overlay, "clipping buffer timestamp/duration to segment");
|
|
buffer = gst_buffer_make_writable (buffer);
|
|
GST_BUFFER_TIMESTAMP (buffer) = clip_start;
|
|
if (stop != -1)
|
|
GST_BUFFER_DURATION (buffer) = clip_stop - clip_start;
|
|
}
|
|
|
|
/* now, after we've done the clipping, fix up end time if there's no
|
|
* duration (we only use those estimated values internally though, we
|
|
* don't want to set bogus values on the buffer itself) */
|
|
if (stop == -1) {
|
|
if (overlay->info.fps_n && overlay->info.fps_d) {
|
|
GST_DEBUG_OBJECT (overlay, "estimating duration based on framerate");
|
|
stop = start + gst_util_uint64_scale_int (GST_SECOND,
|
|
overlay->info.fps_d, overlay->info.fps_n);
|
|
} else {
|
|
GST_LOG_OBJECT (overlay, "no duration, assuming minimal duration");
|
|
stop = start + 1; /* we need to assume some interval */
|
|
}
|
|
}
|
|
|
|
gst_object_sync_values (GST_OBJECT (overlay), GST_BUFFER_TIMESTAMP (buffer));
|
|
|
|
wait_for_text_buf:
|
|
|
|
GST_CEA_CC_OVERLAY_LOCK (overlay);
|
|
|
|
if (overlay->video_flushing)
|
|
goto flushing;
|
|
|
|
if (overlay->video_eos)
|
|
goto have_eos;
|
|
|
|
if (overlay->silent) {
|
|
GST_CEA_CC_OVERLAY_UNLOCK (overlay);
|
|
ret = gst_pad_push (overlay->srcpad, buffer);
|
|
|
|
/* Update position */
|
|
overlay->segment.position = clip_start;
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* Closed Caption pad not linked, rendering video only */
|
|
if (!overlay->cc_pad_linked) {
|
|
GST_CEA_CC_OVERLAY_UNLOCK (overlay);
|
|
ret = gst_pad_push (overlay->srcpad, buffer);
|
|
} else {
|
|
/* Closed Caption pad linked, check if we have a text buffer queued */
|
|
if (GST_CLOCK_TIME_IS_VALID (overlay->current_comp_start_time)) {
|
|
gboolean pop_text = FALSE, valid_text_time = TRUE;
|
|
|
|
GstClockTime text_running_time = GST_CLOCK_TIME_NONE;
|
|
GstClockTime next_buffer_text_running_time = GST_CLOCK_TIME_NONE;
|
|
#ifndef GST_DISABLE_GST_DEBUG
|
|
GstClockTime vid_running_time;
|
|
#endif
|
|
GstClockTime vid_running_time_end;
|
|
|
|
#ifndef GST_DISABLE_GST_DEBUG
|
|
vid_running_time =
|
|
gst_segment_to_running_time (&overlay->segment, GST_FORMAT_TIME,
|
|
start);
|
|
#endif
|
|
vid_running_time_end =
|
|
gst_segment_to_running_time (&overlay->segment, GST_FORMAT_TIME,
|
|
stop);
|
|
if (GST_CLOCK_TIME_IS_VALID (overlay->next_comp_start_time)) {
|
|
next_buffer_text_running_time =
|
|
gst_segment_to_running_time (&overlay->cc_segment, GST_FORMAT_TIME,
|
|
overlay->next_comp_start_time);
|
|
|
|
if (next_buffer_text_running_time < vid_running_time_end) {
|
|
/* text buffer should be force updated, popping */
|
|
GST_DEBUG_OBJECT (overlay,
|
|
"T: next_buffer_text_running_time: %" GST_TIME_FORMAT
|
|
" - overlay->next_comp_start_time: %" GST_TIME_FORMAT,
|
|
GST_TIME_ARGS (next_buffer_text_running_time),
|
|
GST_TIME_ARGS (overlay->next_comp_start_time));
|
|
GST_DEBUG_OBJECT (overlay,
|
|
"V: %" GST_TIME_FORMAT " - %" GST_TIME_FORMAT,
|
|
GST_TIME_ARGS (vid_running_time),
|
|
GST_TIME_ARGS (vid_running_time_end));
|
|
GST_LOG_OBJECT (overlay,
|
|
"text buffer should be force updated, popping");
|
|
pop_text = FALSE;
|
|
gst_cea_cc_overlay_pop_text (overlay);
|
|
GST_CEA_CC_OVERLAY_WAIT (overlay);
|
|
GST_DEBUG_OBJECT (overlay, "resuming");
|
|
GST_CEA_CC_OVERLAY_UNLOCK (overlay);
|
|
goto wait_for_text_buf;
|
|
}
|
|
|
|
}
|
|
|
|
/* if the text buffer isn't stamped right, pop it off the
|
|
* queue and display it for the current video frame only */
|
|
if (!GST_CLOCK_TIME_IS_VALID (overlay->current_comp_start_time)) {
|
|
GST_WARNING_OBJECT (overlay, "Got text buffer with invalid timestamp");
|
|
pop_text = TRUE;
|
|
valid_text_time = FALSE;
|
|
}
|
|
|
|
/* If timestamp and duration are valid */
|
|
if (valid_text_time) {
|
|
text_running_time =
|
|
gst_segment_to_running_time (&overlay->cc_segment,
|
|
GST_FORMAT_TIME, overlay->current_comp_start_time);
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (overlay, "T: %" GST_TIME_FORMAT,
|
|
GST_TIME_ARGS (text_running_time));
|
|
GST_DEBUG_OBJECT (overlay, "V: %" GST_TIME_FORMAT " - %" GST_TIME_FORMAT,
|
|
GST_TIME_ARGS (vid_running_time),
|
|
GST_TIME_ARGS (vid_running_time_end));
|
|
|
|
if (valid_text_time && vid_running_time_end <= text_running_time) {
|
|
GST_LOG_OBJECT (overlay, "text in future, pushing video buf");
|
|
GST_CEA_CC_OVERLAY_UNLOCK (overlay);
|
|
/* Push the video frame */
|
|
ret = gst_pad_push (overlay->srcpad, buffer);
|
|
} else {
|
|
GST_CEA_CC_OVERLAY_UNLOCK (overlay);
|
|
ret = gst_cea_cc_overlay_push_frame (overlay, buffer);
|
|
}
|
|
if (pop_text) {
|
|
GST_CEA_CC_OVERLAY_LOCK (overlay);
|
|
gst_cea_cc_overlay_pop_text (overlay);
|
|
GST_CEA_CC_OVERLAY_UNLOCK (overlay);
|
|
}
|
|
} else {
|
|
GST_CEA_CC_OVERLAY_UNLOCK (overlay);
|
|
GST_LOG_OBJECT (overlay, "no need to wait for a text buffer");
|
|
ret = gst_pad_push (overlay->srcpad, buffer);
|
|
}
|
|
}
|
|
|
|
/* Update position */
|
|
overlay->segment.position = clip_start;
|
|
GST_DEBUG_OBJECT (overlay, "ret=%d", ret);
|
|
|
|
return ret;
|
|
|
|
missing_timestamp:
|
|
{
|
|
GST_WARNING_OBJECT (overlay, "buffer without timestamp, discarding");
|
|
gst_buffer_unref (buffer);
|
|
return GST_FLOW_OK;
|
|
}
|
|
|
|
flushing:
|
|
{
|
|
GST_CEA_CC_OVERLAY_UNLOCK (overlay);
|
|
GST_DEBUG_OBJECT (overlay, "flushing, discarding buffer");
|
|
gst_buffer_unref (buffer);
|
|
return GST_FLOW_FLUSHING;
|
|
}
|
|
have_eos:
|
|
{
|
|
GST_CEA_CC_OVERLAY_UNLOCK (overlay);
|
|
GST_DEBUG_OBJECT (overlay, "eos, discarding buffer");
|
|
gst_buffer_unref (buffer);
|
|
return GST_FLOW_EOS;
|
|
}
|
|
out_of_segment:
|
|
{
|
|
GST_DEBUG_OBJECT (overlay, "buffer out of segment, discarding");
|
|
gst_buffer_unref (buffer);
|
|
return GST_FLOW_OK;
|
|
}
|
|
}
|
|
|
|
static GstStateChangeReturn
|
|
gst_cea_cc_overlay_change_state (GstElement * element,
|
|
GstStateChange transition)
|
|
{
|
|
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
|
|
GstCeaCcOverlay *overlay = GST_CEA_CC_OVERLAY (element);
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
|
GST_CEA_CC_OVERLAY_LOCK (overlay);
|
|
overlay->cc_flushing = TRUE;
|
|
overlay->video_flushing = TRUE;
|
|
/* pop_text will broadcast on the GCond and thus also make the video
|
|
* chain exit if it's waiting for a text buffer */
|
|
gst_cea_cc_overlay_pop_text (overlay);
|
|
GST_CEA_CC_OVERLAY_UNLOCK (overlay);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
ret = parent_class->change_state (element, transition);
|
|
if (ret == GST_STATE_CHANGE_FAILURE)
|
|
return ret;
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_READY_TO_PAUSED:
|
|
GST_CEA_CC_OVERLAY_LOCK (overlay);
|
|
overlay->cc_flushing = FALSE;
|
|
overlay->video_flushing = FALSE;
|
|
overlay->video_eos = FALSE;
|
|
overlay->cc_eos = FALSE;
|
|
gst_segment_init (&overlay->segment, GST_FORMAT_TIME);
|
|
gst_segment_init (&overlay->cc_segment, GST_FORMAT_TIME);
|
|
GST_CEA_CC_OVERLAY_UNLOCK (overlay);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|