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1c1cc73a3b
Devices suitable for decklinksrc may not have any output, hence querying the input returns NULL. Add support for all cases where input/output/config may be missing. https://bugzilla.gnome.org/show_bug.cgi?id=727306
725 lines
21 KiB
C++
725 lines
21 KiB
C++
/* GStreamer
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* Copyright (C) 2011 David Schleef <ds@entropywave.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 Street, Suite 500,
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* Boston, MA 02110-1335, USA.
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*/
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/**
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* SECTION:element-gstdecklinksink
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*
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* The decklinksink element is a sink element for BlackMagic DeckLink
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* cards.
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*
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* <refsect2>
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* <title>Example launch line</title>
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* |[
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* gst-launch-1.0 -v videotestsrc ! decklinksink
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* ]|
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* </refsect2>
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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/gst.h>
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#include <gst/video/video.h>
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#include "gstdecklink.h"
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#include "gstdecklinksink.h"
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#include <string.h>
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/* FIXME:
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* - handle ALLOCATION query
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* - provide buffer pool with suitable strides/alignment for video
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* - handle video meta
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*/
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GST_DEBUG_CATEGORY_STATIC (gst_decklink_sink_debug_category);
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#define GST_CAT_DEFAULT gst_decklink_sink_debug_category
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static void gst_decklink_sink_set_property (GObject * object,
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guint property_id, const GValue * value, GParamSpec * pspec);
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static void gst_decklink_sink_get_property (GObject * object,
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guint property_id, GValue * value, GParamSpec * pspec);
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static void gst_decklink_sink_finalize (GObject * object);
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static GstStateChangeReturn
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gst_decklink_sink_change_state (GstElement * element,
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GstStateChange transition);
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static GstFlowReturn gst_decklink_sink_videosink_chain (GstPad * pad,
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GstObject * parent, GstBuffer * buffer);
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static gboolean gst_decklink_sink_videosink_event (GstPad * pad,
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GstObject * parent, GstEvent * event);
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static gboolean gst_decklink_sink_videosink_query (GstPad * pad,
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GstObject * parent, GstQuery * query);
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static GstFlowReturn gst_decklink_sink_audiosink_chain (GstPad * pad,
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GstObject * parent, GstBuffer * buffer);
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static gboolean gst_decklink_sink_audiosink_event (GstPad * pad,
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GstObject * parent, GstEvent * event);
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static gboolean gst_decklink_sink_audiosink_query (GstPad * pad,
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GstObject * parent, GstQuery * query);
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#ifdef _MSC_VER
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/* COM initialization/uninitialization thread */
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static void gst_decklink_sink_com_thread (GstDecklinkSink * sink);
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#endif /* _MSC_VER */
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enum
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{
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PROP_0,
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PROP_MODE,
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PROP_DEVICE_NUMBER
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};
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/* pad templates */
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/* the video sink pad template is created on the fly */
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static GstStaticPadTemplate gst_decklink_sink_audiosink_template =
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GST_STATIC_PAD_TEMPLATE ("audiosink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS ("audio/x-raw, format=S16LE, channels=2, rate=48000, "
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"layout=interleaved")
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);
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#define parent_class gst_decklink_sink_parent_class
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G_DEFINE_TYPE (GstDecklinkSink, gst_decklink_sink, GST_TYPE_ELEMENT);
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static void
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gst_decklink_sink_class_init (GstDecklinkSinkClass * klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
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gobject_class->set_property = gst_decklink_sink_set_property;
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gobject_class->get_property = gst_decklink_sink_get_property;
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gobject_class->finalize = gst_decklink_sink_finalize;
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element_class->change_state =
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GST_DEBUG_FUNCPTR (gst_decklink_sink_change_state);
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g_object_class_install_property (gobject_class, PROP_MODE,
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g_param_spec_enum ("mode", "Playback Mode",
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"Video Mode to use for playback",
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GST_TYPE_DECKLINK_MODE, GST_DECKLINK_MODE_NTSC,
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(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
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G_PARAM_CONSTRUCT)));
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g_object_class_install_property (gobject_class, PROP_DEVICE_NUMBER,
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g_param_spec_int ("device-number", "Device number",
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"Output device instance to use", 0, G_MAXINT, 0,
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(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
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G_PARAM_CONSTRUCT)));
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gst_element_class_add_pad_template (element_class,
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gst_pad_template_new ("videosink", GST_PAD_SINK, GST_PAD_ALWAYS,
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gst_decklink_mode_get_template_caps ()));
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&gst_decklink_sink_audiosink_template));
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gst_element_class_set_static_metadata (element_class, "Decklink Sink",
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"Video/Sink", "Decklink Sink", "David Schleef <ds@entropywave.com>");
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GST_DEBUG_CATEGORY_INIT (gst_decklink_sink_debug_category, "decklinksink", 0,
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"debug category for decklinksink element");
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}
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static void
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gst_decklink_sink_init (GstDecklinkSink * decklinksink)
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{
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GstDecklinkSinkClass *decklinksink_class;
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decklinksink_class = GST_DECKLINK_SINK_GET_CLASS (decklinksink);
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decklinksink->videosinkpad =
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gst_pad_new_from_template (gst_element_class_get_pad_template
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(GST_ELEMENT_CLASS (decklinksink_class), "videosink"), "videosink");
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gst_pad_set_chain_function (decklinksink->videosinkpad,
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GST_DEBUG_FUNCPTR (gst_decklink_sink_videosink_chain));
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gst_pad_set_event_function (decklinksink->videosinkpad,
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GST_DEBUG_FUNCPTR (gst_decklink_sink_videosink_event));
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gst_pad_set_query_function (decklinksink->videosinkpad,
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GST_DEBUG_FUNCPTR (gst_decklink_sink_videosink_query));
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gst_element_add_pad (GST_ELEMENT (decklinksink), decklinksink->videosinkpad);
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decklinksink->audiosinkpad =
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gst_pad_new_from_static_template (&gst_decklink_sink_audiosink_template,
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"audiosink");
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gst_pad_set_chain_function (decklinksink->audiosinkpad,
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GST_DEBUG_FUNCPTR (gst_decklink_sink_audiosink_chain));
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gst_pad_set_event_function (decklinksink->audiosinkpad,
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GST_DEBUG_FUNCPTR (gst_decklink_sink_audiosink_event));
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gst_pad_set_query_function (decklinksink->audiosinkpad,
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GST_DEBUG_FUNCPTR (gst_decklink_sink_audiosink_query));
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gst_element_add_pad (GST_ELEMENT (decklinksink), decklinksink->audiosinkpad);
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GST_OBJECT_FLAG_SET (decklinksink, GST_ELEMENT_FLAG_SINK);
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g_cond_init (&decklinksink->cond);
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g_mutex_init (&decklinksink->mutex);
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g_mutex_init (&decklinksink->audio_mutex);
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g_cond_init (&decklinksink->audio_cond);
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decklinksink->mode = GST_DECKLINK_MODE_NTSC;
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decklinksink->device_number = 0;
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decklinksink->callback = new Output;
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decklinksink->callback->decklinksink = decklinksink;
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#ifdef _MSC_VER
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g_mutex_init (&decklinksink->com_init_lock);
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g_mutex_init (&decklinksink->com_deinit_lock);
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g_cond_init (&decklinksink->com_initialized);
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g_cond_init (&decklinksink->com_uninitialize);
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g_cond_init (&decklinksink->com_uninitialized);
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g_mutex_lock (&decklinksink->com_init_lock);
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/* create the COM initialization thread */
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g_thread_create ((GThreadFunc) gst_decklink_sink_com_thread,
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decklinksink, FALSE, NULL);
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/* wait until the COM thread signals that COM has been initialized */
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g_cond_wait (&decklinksink->com_initialized, &decklinksink->com_init_lock);
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g_mutex_unlock (&decklinksink->com_init_lock);
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#endif /* _MSC_VER */
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}
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void
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gst_decklink_sink_set_property (GObject * object, guint property_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstDecklinkSink *decklinksink;
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g_return_if_fail (GST_IS_DECKLINK_SINK (object));
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decklinksink = GST_DECKLINK_SINK (object);
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switch (property_id) {
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case PROP_MODE:
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decklinksink->mode = (GstDecklinkModeEnum) g_value_get_enum (value);
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break;
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case PROP_DEVICE_NUMBER:
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decklinksink->device_number = g_value_get_int (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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break;
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}
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}
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void
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gst_decklink_sink_get_property (GObject * object, guint property_id,
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GValue * value, GParamSpec * pspec)
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{
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GstDecklinkSink *decklinksink;
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g_return_if_fail (GST_IS_DECKLINK_SINK (object));
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decklinksink = GST_DECKLINK_SINK (object);
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switch (property_id) {
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case PROP_MODE:
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g_value_set_enum (value, decklinksink->mode);
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break;
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case PROP_DEVICE_NUMBER:
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g_value_set_int (value, decklinksink->device_number);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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break;
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}
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}
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#ifdef _MSC_VER
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static void
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gst_decklink_sink_com_thread (GstDecklinkSink * sink)
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{
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HRESULT res;
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g_mutex_lock (sink->com_init_lock);
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/* Initialize COM with a MTA for this process. This thread will
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* be the first one to enter the apartement and the last one to leave
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* it, unitializing COM properly */
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res = CoInitializeEx (0, COINIT_MULTITHREADED);
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if (res == S_FALSE)
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GST_WARNING_OBJECT (sink,
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"COM has been already initialized in the same process");
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else if (res == RPC_E_CHANGED_MODE)
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GST_WARNING_OBJECT (sink, "The concurrency model of COM has changed.");
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else
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GST_INFO_OBJECT (sink, "COM intialized succesfully");
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sink->comInitialized = TRUE;
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/* Signal other threads waiting on this condition that COM was initialized */
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g_cond_signal (sink->com_initialized);
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g_mutex_unlock (sink->com_init_lock);
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/* Wait until the unitialize condition is met to leave the COM apartement */
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g_mutex_lock (sink->com_deinit_lock);
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g_cond_wait (sink->com_uninitialize, sink->com_deinit_lock);
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CoUninitialize ();
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GST_INFO_OBJECT (sink, "COM unintialized succesfully");
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sink->comInitialized = FALSE;
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g_cond_signal (sink->com_uninitialized);
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g_mutex_unlock (sink->com_deinit_lock);
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}
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#endif /* _MSC_VER */
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void
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gst_decklink_sink_finalize (GObject * object)
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{
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GstDecklinkSink *decklinksink;
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decklinksink = GST_DECKLINK_SINK (object);
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g_cond_clear (&decklinksink->cond);
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g_mutex_clear (&decklinksink->mutex);
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g_cond_clear (&decklinksink->audio_cond);
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g_mutex_clear (&decklinksink->audio_mutex);
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delete decklinksink->callback;
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#ifdef _MSC_VER
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/* signal the COM thread that it should uninitialize COM */
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if (decklinksink->comInitialized) {
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g_mutex_lock (&decklinksink->com_deinit_lock);
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g_cond_signal (&decklinksink->com_uninitialize);
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g_cond_wait (&decklinksink->com_uninitialized,
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&decklinksink->com_deinit_lock);
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g_mutex_unlock (&decklinksink->com_deinit_lock);
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}
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g_mutex_clear (&decklinksink->com_init_lock);
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g_mutex_clear (&decklinksink->com_deinit_lock);
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g_cond_clear (&decklinksink->com_initialized);
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g_cond_clear (&decklinksink->com_uninitialize);
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g_cond_clear (&decklinksink->com_uninitialized);
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#endif /* _MSC_VER */
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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/* FIXME: post error messages for the misc. failures */
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static gboolean
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gst_decklink_sink_start (GstDecklinkSink * decklinksink)
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{
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HRESULT ret;
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const GstDecklinkMode *mode;
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BMDAudioSampleType sample_depth;
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decklinksink->decklink = gst_decklink_get_nth_device (decklinksink->device_number);
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if (!decklinksink->decklink) {
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GST_WARNING ("failed to get device %d", decklinksink->device_number);
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return FALSE;
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}
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decklinksink->output = gst_decklink_get_nth_output (decklinksink->device_number);
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if (!decklinksink->decklink) {
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GST_WARNING ("no output for device %d", decklinksink->device_number);
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return FALSE;
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}
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decklinksink->output->SetAudioCallback (decklinksink->callback);
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mode = gst_decklink_get_mode (decklinksink->mode);
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ret = decklinksink->output->EnableVideoOutput (mode->mode,
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bmdVideoOutputFlagDefault);
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if (ret != S_OK) {
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GST_WARNING ("failed to enable video output");
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return FALSE;
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}
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//decklinksink->video_enabled = TRUE;
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decklinksink->output->SetScheduledFrameCompletionCallback (decklinksink->
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callback);
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sample_depth = bmdAudioSampleType16bitInteger;
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ret = decklinksink->output->EnableAudioOutput (bmdAudioSampleRate48kHz,
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sample_depth, 2, bmdAudioOutputStreamContinuous);
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if (ret != S_OK) {
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GST_WARNING ("failed to enable audio output");
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return FALSE;
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}
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decklinksink->audio_adapter = gst_adapter_new ();
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decklinksink->num_frames = 0;
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return TRUE;
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}
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static gboolean
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gst_decklink_sink_force_stop (GstDecklinkSink * decklinksink)
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{
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g_mutex_lock (&decklinksink->mutex);
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decklinksink->stop = TRUE;
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g_cond_signal (&decklinksink->cond);
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g_mutex_unlock (&decklinksink->mutex);
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g_mutex_lock (&decklinksink->audio_mutex);
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g_cond_signal (&decklinksink->audio_cond);
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g_mutex_unlock (&decklinksink->audio_mutex);
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return TRUE;
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}
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static gboolean
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gst_decklink_sink_stop (GstDecklinkSink * decklinksink)
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{
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decklinksink->output->StopScheduledPlayback (0, NULL, 0);
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decklinksink->output->DisableAudioOutput ();
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decklinksink->output->DisableVideoOutput ();
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return TRUE;
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}
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static GstStateChangeReturn
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gst_decklink_sink_change_state (GstElement * element, GstStateChange transition)
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{
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GstDecklinkSink *decklinksink;
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GstStateChangeReturn ret;
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decklinksink = GST_DECKLINK_SINK (element);
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switch (transition) {
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case GST_STATE_CHANGE_NULL_TO_READY:
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if (!gst_decklink_sink_start (decklinksink)) {
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ret = GST_STATE_CHANGE_FAILURE;
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goto out;
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}
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break;
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case GST_STATE_CHANGE_READY_TO_PAUSED:
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break;
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case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
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break;
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default:
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break;
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}
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ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
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switch (transition) {
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case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
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gst_decklink_sink_force_stop (decklinksink);
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break;
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case GST_STATE_CHANGE_PAUSED_TO_READY:
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break;
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case GST_STATE_CHANGE_READY_TO_NULL:
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gst_decklink_sink_stop (decklinksink);
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break;
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default:
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break;
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}
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out:
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return ret;
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}
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static GstFlowReturn
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gst_decklink_sink_videosink_chain (GstPad * pad, GstObject * parent,
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GstBuffer * buffer)
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{
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GstDecklinkSink *decklinksink;
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IDeckLinkMutableVideoFrame *frame;
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void *data;
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GstFlowReturn ret;
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const GstDecklinkMode *mode;
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decklinksink = GST_DECKLINK_SINK (parent);
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#if 0
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if (!decklinksink->video_enabled) {
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HRESULT ret;
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ret = decklinksink->output->EnableVideoOutput (decklinksink->display_mode,
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bmdVideoOutputFlagDefault);
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if (ret != S_OK) {
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GST_WARNING ("failed to enable video output");
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//return FALSE;
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}
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decklinksink->video_enabled = TRUE;
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}
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#endif
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mode = gst_decklink_get_mode (decklinksink->mode);
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decklinksink->output->CreateVideoFrame (mode->width,
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mode->height, mode->width * 2, decklinksink->pixel_format,
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bmdFrameFlagDefault, &frame);
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frame->GetBytes (&data);
|
|
gst_buffer_extract (buffer, 0, data, gst_buffer_get_size (buffer));
|
|
gst_buffer_unref (buffer);
|
|
|
|
g_mutex_lock (&decklinksink->mutex);
|
|
while (decklinksink->queued_frames > 2 && !decklinksink->stop) {
|
|
g_cond_wait (&decklinksink->cond, &decklinksink->mutex);
|
|
}
|
|
if (!decklinksink->stop) {
|
|
decklinksink->queued_frames++;
|
|
}
|
|
g_mutex_unlock (&decklinksink->mutex);
|
|
|
|
if (!decklinksink->stop) {
|
|
decklinksink->output->ScheduleVideoFrame (frame,
|
|
decklinksink->num_frames * mode->fps_d, mode->fps_d, mode->fps_n);
|
|
decklinksink->num_frames++;
|
|
|
|
if (!decklinksink->sched_started) {
|
|
decklinksink->output->StartScheduledPlayback (0, mode->fps_d, 1.0);
|
|
decklinksink->sched_started = TRUE;
|
|
}
|
|
|
|
ret = GST_FLOW_OK;
|
|
} else {
|
|
ret = GST_FLOW_FLUSHING;
|
|
}
|
|
|
|
frame->Release ();
|
|
|
|
return ret;
|
|
}
|
|
|
|
static gboolean
|
|
gst_decklink_sink_videosink_event (GstPad * pad, GstObject * parent,
|
|
GstEvent * event)
|
|
{
|
|
gboolean res;
|
|
GstDecklinkSink *decklinksink;
|
|
|
|
decklinksink = GST_DECKLINK_SINK (parent);
|
|
|
|
GST_DEBUG_OBJECT (pad, "event: %" GST_PTR_FORMAT, event);
|
|
|
|
switch (GST_EVENT_TYPE (event)) {
|
|
/* FIXME: this makes no sense, template caps don't contain v210 */
|
|
#if 0
|
|
case GST_EVENT_CAPS:{
|
|
GstCaps *caps;
|
|
|
|
gst_event_parse_caps (event, &caps);
|
|
ret = gst_video_format_parse_caps (caps, &format, &width, &height);
|
|
if (ret) {
|
|
if (format == GST_VIDEO_FORMAT_v210) {
|
|
decklinksink->pixel_format = bmdFormat10BitYUV;
|
|
} else {
|
|
decklinksink->pixel_format = bmdFormat8BitYUV;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
#endif
|
|
case GST_EVENT_EOS:
|
|
/* FIXME: EOS aggregation with audio pad looks wrong */
|
|
decklinksink->video_eos = TRUE;
|
|
decklinksink->video_seqnum = gst_event_get_seqnum (event);
|
|
{
|
|
GstMessage *message;
|
|
|
|
message = gst_message_new_eos (GST_OBJECT_CAST (decklinksink));
|
|
gst_message_set_seqnum (message, decklinksink->video_seqnum);
|
|
gst_element_post_message (GST_ELEMENT_CAST (decklinksink), message);
|
|
}
|
|
res = gst_pad_event_default (pad, parent, event);
|
|
break;
|
|
default:
|
|
res = gst_pad_event_default (pad, parent, event);
|
|
break;
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
static gboolean
|
|
gst_decklink_sink_videosink_query (GstPad * pad, GstObject * parent,
|
|
GstQuery * query)
|
|
{
|
|
gboolean res;
|
|
GstDecklinkSink *decklinksink;
|
|
|
|
decklinksink = GST_DECKLINK_SINK (parent);
|
|
|
|
GST_DEBUG_OBJECT (decklinksink, "query");
|
|
|
|
switch (GST_QUERY_TYPE (query)) {
|
|
case GST_QUERY_CAPS:{
|
|
GstCaps *mode_caps, *filter, *caps;
|
|
|
|
/* FIXME: do we change mode if incoming caps change? If yes, we
|
|
* should probably return the template caps instead */
|
|
mode_caps = gst_decklink_mode_get_caps (decklinksink->mode);
|
|
gst_query_parse_caps (query, &filter);
|
|
if (filter) {
|
|
caps = gst_caps_intersect_full (filter, mode_caps, GST_CAPS_INTERSECT_FIRST);
|
|
gst_caps_unref (mode_caps);
|
|
} else {
|
|
caps = mode_caps;
|
|
}
|
|
gst_query_set_caps_result (query, caps);
|
|
gst_caps_unref (caps);
|
|
res = TRUE;
|
|
break;
|
|
}
|
|
default:
|
|
res = gst_pad_query_default (pad, parent, query);
|
|
break;
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_decklink_sink_audiosink_chain (GstPad * pad, GstObject * parent,
|
|
GstBuffer * buffer)
|
|
{
|
|
GstDecklinkSink *decklinksink;
|
|
GstFlowReturn ret;
|
|
|
|
decklinksink = GST_DECKLINK_SINK (parent);
|
|
|
|
if (decklinksink->stop)
|
|
return GST_FLOW_FLUSHING;
|
|
|
|
g_mutex_lock (&decklinksink->audio_mutex);
|
|
while (!decklinksink->stop &&
|
|
gst_adapter_available (decklinksink->audio_adapter) > 1600 * 4 * 2) {
|
|
g_cond_wait (&decklinksink->audio_cond, &decklinksink->audio_mutex);
|
|
}
|
|
gst_adapter_push (decklinksink->audio_adapter, buffer);
|
|
g_mutex_unlock (&decklinksink->audio_mutex);
|
|
|
|
ret = GST_FLOW_OK;
|
|
return ret;
|
|
}
|
|
|
|
static gboolean
|
|
gst_decklink_sink_audiosink_event (GstPad * pad, GstObject * parent,
|
|
GstEvent * event)
|
|
{
|
|
gboolean res;
|
|
GstDecklinkSink *decklinksink;
|
|
|
|
decklinksink = GST_DECKLINK_SINK (parent);
|
|
|
|
GST_DEBUG_OBJECT (pad, "event: %" GST_PTR_FORMAT, event);
|
|
|
|
switch (GST_EVENT_TYPE (event)) {
|
|
case GST_EVENT_EOS:
|
|
/* FIXME: EOS aggregation with video pad looks wrong */
|
|
decklinksink->audio_eos = TRUE;
|
|
decklinksink->audio_seqnum = gst_event_get_seqnum (event);
|
|
res = gst_pad_event_default (pad, parent, event);
|
|
break;
|
|
default:
|
|
res = gst_pad_event_default (pad, parent, event);
|
|
break;
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
static gboolean
|
|
gst_decklink_sink_audiosink_query (GstPad * pad, GstObject * parent,
|
|
GstQuery * query)
|
|
{
|
|
gboolean res;
|
|
|
|
GST_DEBUG_OBJECT (pad, "query: %" GST_PTR_FORMAT, query);
|
|
|
|
switch (GST_QUERY_TYPE (query)) {
|
|
default:
|
|
res = gst_pad_query_default (pad, parent, query);
|
|
break;
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
HRESULT
|
|
Output::ScheduledFrameCompleted (IDeckLinkVideoFrame * completedFrame,
|
|
BMDOutputFrameCompletionResult result)
|
|
{
|
|
GST_DEBUG ("ScheduledFrameCompleted");
|
|
|
|
g_mutex_lock (&decklinksink->mutex);
|
|
g_cond_signal (&decklinksink->cond);
|
|
decklinksink->queued_frames--;
|
|
g_mutex_unlock (&decklinksink->mutex);
|
|
|
|
return S_OK;
|
|
}
|
|
|
|
HRESULT
|
|
Output::ScheduledPlaybackHasStopped ()
|
|
{
|
|
GST_DEBUG ("ScheduledPlaybackHasStopped");
|
|
return S_OK;
|
|
}
|
|
|
|
HRESULT
|
|
Output::RenderAudioSamples (bool preroll)
|
|
{
|
|
uint32_t samplesWritten;
|
|
|
|
// guint64 samplesToWrite;
|
|
|
|
if (decklinksink->stop) {
|
|
GST_DEBUG ("decklinksink->stop set TRUE!");
|
|
decklinksink->output->BeginAudioPreroll ();
|
|
// running = true;
|
|
} else {
|
|
gconstpointer data;
|
|
int n;
|
|
|
|
g_mutex_lock (&decklinksink->audio_mutex);
|
|
|
|
n = gst_adapter_available (decklinksink->audio_adapter);
|
|
if (n > 0) {
|
|
data = gst_adapter_map (decklinksink->audio_adapter, n);
|
|
|
|
decklinksink->output->ScheduleAudioSamples ((void *) data, n / 4,
|
|
0, 0, &samplesWritten);
|
|
|
|
gst_adapter_unmap (decklinksink->audio_adapter);
|
|
gst_adapter_flush (decklinksink->audio_adapter, samplesWritten * 4);
|
|
GST_DEBUG ("wrote %d samples, %d available", samplesWritten, n / 4);
|
|
|
|
g_cond_signal (&decklinksink->audio_cond);
|
|
} else {
|
|
if (decklinksink->audio_eos) {
|
|
GstMessage *message;
|
|
|
|
message = gst_message_new_eos (GST_OBJECT_CAST (decklinksink));
|
|
gst_message_set_seqnum (message, decklinksink->audio_seqnum);
|
|
gst_element_post_message (GST_ELEMENT_CAST (decklinksink), message);
|
|
}
|
|
}
|
|
g_mutex_unlock (&decklinksink->audio_mutex);
|
|
|
|
}
|
|
|
|
GST_DEBUG ("RenderAudioSamples");
|
|
|
|
return S_OK;
|
|
}
|