gstreamer/sys/decklink/gstdecklinksink.cpp

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/* GStreamer
* Copyright (C) 2011 David Schleef <ds@entropywave.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Suite 500,
* Boston, MA 02110-1335, USA.
*/
/**
* SECTION:element-gstdecklinksink
*
* The decklinksink element is a sink element for BlackMagic DeckLink
* cards.
*
* <refsect2>
* <title>Example launch line</title>
* |[
* gst-launch -v videotestsrc ! decklinksink
* ]|
* </refsect2>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/gst.h>
#include <gst/gst.h>
#include "gstdecklink.h"
#include "gstdecklinksink.h"
#include <string.h>
GST_DEBUG_CATEGORY_STATIC (gst_decklink_sink_debug_category);
#define GST_CAT_DEFAULT gst_decklink_sink_debug_category
/* prototypes */
static void gst_decklink_sink_set_property (GObject * object,
guint property_id, const GValue * value, GParamSpec * pspec);
static void gst_decklink_sink_get_property (GObject * object,
guint property_id, GValue * value, GParamSpec * pspec);
static void gst_decklink_sink_dispose (GObject * object);
static void gst_decklink_sink_finalize (GObject * object);
static GstStateChangeReturn
gst_decklink_sink_change_state (GstElement * element,
GstStateChange transition);
static GstClock *gst_decklink_sink_provide_clock (GstElement * element);
static gboolean gst_decklink_sink_set_clock (GstElement * element,
GstClock * clock);
static GstIndex *gst_decklink_sink_get_index (GstElement * element);
static void gst_decklink_sink_set_index (GstElement * element,
GstIndex * index);
static gboolean gst_decklink_sink_send_event (GstElement * element,
GstEvent * event);
static gboolean gst_decklink_sink_query (GstElement * element,
GstQuery * query);
static GstCaps *gst_decklink_sink_videosink_getcaps (GstPad * pad);
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static gboolean gst_decklink_sink_videosink_setcaps (GstPad * pad,
GstCaps * caps);
static gboolean gst_decklink_sink_videosink_acceptcaps (GstPad * pad,
GstCaps * caps);
static gboolean gst_decklink_sink_videosink_activate (GstPad * pad);
static gboolean gst_decklink_sink_videosink_activatepush (GstPad * pad,
gboolean active);
static gboolean gst_decklink_sink_videosink_activatepull (GstPad * pad,
gboolean active);
static GstPadLinkReturn gst_decklink_sink_videosink_link (GstPad * pad,
GstPad * peer);
static GstFlowReturn gst_decklink_sink_videosink_chain (GstPad * pad,
GstBuffer * buffer);
static GstFlowReturn gst_decklink_sink_videosink_chainlist (GstPad * pad,
GstBufferList * bufferlist);
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static gboolean gst_decklink_sink_videosink_event (GstPad * pad,
GstEvent * event);
static gboolean gst_decklink_sink_videosink_query (GstPad * pad,
GstQuery * query);
static GstFlowReturn gst_decklink_sink_videosink_bufferalloc (GstPad * pad,
guint64 offset, guint size, GstCaps * caps, GstBuffer ** buf);
static GstIterator *gst_decklink_sink_videosink_iterintlink (GstPad * pad);
static GstCaps *gst_decklink_sink_audiosink_getcaps (GstPad * pad);
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static gboolean gst_decklink_sink_audiosink_setcaps (GstPad * pad,
GstCaps * caps);
static gboolean gst_decklink_sink_audiosink_acceptcaps (GstPad * pad,
GstCaps * caps);
static gboolean gst_decklink_sink_audiosink_activate (GstPad * pad);
static gboolean gst_decklink_sink_audiosink_activatepush (GstPad * pad,
gboolean active);
static gboolean gst_decklink_sink_audiosink_activatepull (GstPad * pad,
gboolean active);
static GstPadLinkReturn gst_decklink_sink_audiosink_link (GstPad * pad,
GstPad * peer);
static GstFlowReturn gst_decklink_sink_audiosink_chain (GstPad * pad,
GstBuffer * buffer);
static GstFlowReturn gst_decklink_sink_audiosink_chainlist (GstPad * pad,
GstBufferList * bufferlist);
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static gboolean gst_decklink_sink_audiosink_event (GstPad * pad,
GstEvent * event);
static gboolean gst_decklink_sink_audiosink_query (GstPad * pad,
GstQuery * query);
static GstFlowReturn gst_decklink_sink_audiosink_bufferalloc (GstPad * pad,
guint64 offset, guint size, GstCaps * caps, GstBuffer ** buf);
static GstIterator *gst_decklink_sink_audiosink_iterintlink (GstPad * pad);
enum
{
PROP_0,
PROP_MODE
};
/* pad templates */
static GstStaticPadTemplate gst_decklink_sink_videosink_template =
GST_STATIC_PAD_TEMPLATE ("videosink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_DECKLINK_CAPS));
static GstStaticPadTemplate gst_decklink_sink_audiosink_template =
GST_STATIC_PAD_TEMPLATE ("audiosink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("audio/x-raw-int,width=16,depth=16,channels=2,rate=48000")
);
/* class initialization */
#define DEBUG_INIT(bla) \
GST_DEBUG_CATEGORY_INIT (gst_decklink_sink_debug_category, "decklinksink", 0, \
"debug category for decklinksink element");
GST_BOILERPLATE_FULL (GstDecklinkSink, gst_decklink_sink, GstElement,
GST_TYPE_ELEMENT, DEBUG_INIT);
static void
gst_decklink_sink_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_decklink_sink_videosink_template));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_decklink_sink_audiosink_template));
gst_element_class_set_details_simple (element_class, "Decklink Sink",
"Video/Sink", "Decklink Sink", "David Schleef <ds@entropywave.com>");
}
static void
gst_decklink_sink_class_init (GstDecklinkSinkClass * klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
gobject_class->set_property = gst_decklink_sink_set_property;
gobject_class->get_property = gst_decklink_sink_get_property;
gobject_class->dispose = gst_decklink_sink_dispose;
gobject_class->finalize = gst_decklink_sink_finalize;
element_class->change_state =
GST_DEBUG_FUNCPTR (gst_decklink_sink_change_state);
element_class->provide_clock =
GST_DEBUG_FUNCPTR (gst_decklink_sink_provide_clock);
element_class->set_clock = GST_DEBUG_FUNCPTR (gst_decklink_sink_set_clock);
element_class->get_index = GST_DEBUG_FUNCPTR (gst_decklink_sink_get_index);
element_class->set_index = GST_DEBUG_FUNCPTR (gst_decklink_sink_set_index);
element_class->send_event = GST_DEBUG_FUNCPTR (gst_decklink_sink_send_event);
element_class->query = GST_DEBUG_FUNCPTR (gst_decklink_sink_query);
g_object_class_install_property (gobject_class, PROP_MODE,
g_param_spec_enum ("mode", "Mode", "Mode",
GST_TYPE_DECKLINK_MODE, GST_DECKLINK_MODE_NTSC,
(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
G_PARAM_CONSTRUCT)));
}
static void
gst_decklink_sink_init (GstDecklinkSink * decklinksink,
GstDecklinkSinkClass * decklinksink_class)
{
decklinksink->videosinkpad =
gst_pad_new_from_static_template (&gst_decklink_sink_videosink_template,
"sink");
gst_pad_set_getcaps_function (decklinksink->videosinkpad,
GST_DEBUG_FUNCPTR (gst_decklink_sink_videosink_getcaps));
gst_pad_set_setcaps_function (decklinksink->videosinkpad,
GST_DEBUG_FUNCPTR (gst_decklink_sink_videosink_setcaps));
gst_pad_set_acceptcaps_function (decklinksink->videosinkpad,
GST_DEBUG_FUNCPTR (gst_decklink_sink_videosink_acceptcaps));
gst_pad_set_activate_function (decklinksink->videosinkpad,
GST_DEBUG_FUNCPTR (gst_decklink_sink_videosink_activate));
gst_pad_set_activatepush_function (decklinksink->videosinkpad,
GST_DEBUG_FUNCPTR (gst_decklink_sink_videosink_activatepush));
gst_pad_set_activatepull_function (decklinksink->videosinkpad,
GST_DEBUG_FUNCPTR (gst_decklink_sink_videosink_activatepull));
gst_pad_set_link_function (decklinksink->videosinkpad,
GST_DEBUG_FUNCPTR (gst_decklink_sink_videosink_link));
gst_pad_set_chain_function (decklinksink->videosinkpad,
GST_DEBUG_FUNCPTR (gst_decklink_sink_videosink_chain));
gst_pad_set_chain_list_function (decklinksink->videosinkpad,
GST_DEBUG_FUNCPTR (gst_decklink_sink_videosink_chainlist));
gst_pad_set_event_function (decklinksink->videosinkpad,
GST_DEBUG_FUNCPTR (gst_decklink_sink_videosink_event));
gst_pad_set_query_function (decklinksink->videosinkpad,
GST_DEBUG_FUNCPTR (gst_decklink_sink_videosink_query));
gst_pad_set_bufferalloc_function (decklinksink->videosinkpad,
GST_DEBUG_FUNCPTR (gst_decklink_sink_videosink_bufferalloc));
gst_pad_set_iterate_internal_links_function (decklinksink->videosinkpad,
GST_DEBUG_FUNCPTR (gst_decklink_sink_videosink_iterintlink));
gst_element_add_pad (GST_ELEMENT (decklinksink), decklinksink->videosinkpad);
decklinksink->audiosinkpad =
gst_pad_new_from_static_template (&gst_decklink_sink_audiosink_template,
"audiosink");
gst_pad_set_getcaps_function (decklinksink->audiosinkpad,
GST_DEBUG_FUNCPTR (gst_decklink_sink_audiosink_getcaps));
gst_pad_set_setcaps_function (decklinksink->audiosinkpad,
GST_DEBUG_FUNCPTR (gst_decklink_sink_audiosink_setcaps));
gst_pad_set_acceptcaps_function (decklinksink->audiosinkpad,
GST_DEBUG_FUNCPTR (gst_decklink_sink_audiosink_acceptcaps));
gst_pad_set_activate_function (decklinksink->audiosinkpad,
GST_DEBUG_FUNCPTR (gst_decklink_sink_audiosink_activate));
gst_pad_set_activatepush_function (decklinksink->audiosinkpad,
GST_DEBUG_FUNCPTR (gst_decklink_sink_audiosink_activatepush));
gst_pad_set_activatepull_function (decklinksink->audiosinkpad,
GST_DEBUG_FUNCPTR (gst_decklink_sink_audiosink_activatepull));
gst_pad_set_link_function (decklinksink->audiosinkpad,
GST_DEBUG_FUNCPTR (gst_decklink_sink_audiosink_link));
gst_pad_set_chain_function (decklinksink->audiosinkpad,
GST_DEBUG_FUNCPTR (gst_decklink_sink_audiosink_chain));
gst_pad_set_chain_list_function (decklinksink->audiosinkpad,
GST_DEBUG_FUNCPTR (gst_decklink_sink_audiosink_chainlist));
gst_pad_set_event_function (decklinksink->audiosinkpad,
GST_DEBUG_FUNCPTR (gst_decklink_sink_audiosink_event));
gst_pad_set_query_function (decklinksink->audiosinkpad,
GST_DEBUG_FUNCPTR (gst_decklink_sink_audiosink_query));
gst_pad_set_bufferalloc_function (decklinksink->audiosinkpad,
GST_DEBUG_FUNCPTR (gst_decklink_sink_audiosink_bufferalloc));
gst_pad_set_iterate_internal_links_function (decklinksink->audiosinkpad,
GST_DEBUG_FUNCPTR (gst_decklink_sink_audiosink_iterintlink));
gst_element_add_pad (GST_ELEMENT (decklinksink), decklinksink->audiosinkpad);
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decklinksink->cond = g_cond_new ();
decklinksink->mutex = g_mutex_new ();
decklinksink->audio_mutex = g_mutex_new ();
decklinksink->mode = GST_DECKLINK_MODE_NTSC;
decklinksink->callback = new Output;
decklinksink->callback->decklinksink = decklinksink;
}
void
gst_decklink_sink_set_property (GObject * object, guint property_id,
const GValue * value, GParamSpec * pspec)
{
GstDecklinkSink *decklinksink;
g_return_if_fail (GST_IS_DECKLINK_SINK (object));
decklinksink = GST_DECKLINK_SINK (object);
switch (property_id) {
case PROP_MODE:
decklinksink->mode = (GstDecklinkModeEnum) g_value_get_enum (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
void
gst_decklink_sink_get_property (GObject * object, guint property_id,
GValue * value, GParamSpec * pspec)
{
GstDecklinkSink *decklinksink;
g_return_if_fail (GST_IS_DECKLINK_SINK (object));
decklinksink = GST_DECKLINK_SINK (object);
switch (property_id) {
case PROP_MODE:
g_value_set_enum (value, decklinksink->mode);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
void
gst_decklink_sink_dispose (GObject * object)
{
g_return_if_fail (GST_IS_DECKLINK_SINK (object));
/* clean up as possible. may be called multiple times */
G_OBJECT_CLASS (parent_class)->dispose (object);
}
void
gst_decklink_sink_finalize (GObject * object)
{
GstDecklinkSink *decklinksink;
g_return_if_fail (GST_IS_DECKLINK_SINK (object));
decklinksink = GST_DECKLINK_SINK (object);
/* clean up object here */
g_cond_free (decklinksink->cond);
g_mutex_free (decklinksink->mutex);
g_mutex_free (decklinksink->audio_mutex);
delete decklinksink->callback;
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static gboolean
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gst_decklink_sink_start (GstDecklinkSink * decklinksink)
{
IDeckLinkIterator *iterator;
HRESULT ret;
const GstDecklinkMode *mode;
iterator = CreateDeckLinkIteratorInstance ();
if (iterator == NULL) {
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GST_ERROR ("no driver");
return FALSE;
}
ret = iterator->Next (&decklinksink->decklink);
if (ret != S_OK) {
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GST_ERROR ("no card");
return FALSE;
}
ret = decklinksink->decklink->QueryInterface (IID_IDeckLinkOutput,
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(void **) &decklinksink->output);
if (ret != S_OK) {
GST_ERROR ("no output");
return FALSE;
}
decklinksink->output->SetAudioCallback (decklinksink->callback);
mode = gst_decklink_get_mode (decklinksink->mode);
ret = decklinksink->output->EnableVideoOutput (mode->mode,
bmdVideoOutputFlagDefault);
if (ret != S_OK) {
GST_ERROR ("failed to enable video output");
return FALSE;
}
//decklinksink->video_enabled = TRUE;
decklinksink->output->
SetScheduledFrameCompletionCallback (decklinksink->callback);
ret = decklinksink->output->EnableAudioOutput (bmdAudioSampleRate48kHz,
16, 2, bmdAudioOutputStreamContinuous);
if (ret != S_OK) {
GST_ERROR ("failed to enable audio output");
return FALSE;
}
decklinksink->audio_buffer = gst_buffer_new ();
decklinksink->num_frames = 0;
return TRUE;
}
static gboolean
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gst_decklink_sink_force_stop (GstDecklinkSink * decklinksink)
{
g_mutex_lock (decklinksink->mutex);
decklinksink->stop = TRUE;
g_cond_signal (decklinksink->cond);
g_mutex_unlock (decklinksink->mutex);
return TRUE;
}
static gboolean
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gst_decklink_sink_stop (GstDecklinkSink * decklinksink)
{
decklinksink->output->StopScheduledPlayback (0, NULL, 0);
decklinksink->output->DisableAudioOutput ();
decklinksink->output->DisableVideoOutput ();
return TRUE;
}
static GstStateChangeReturn
gst_decklink_sink_change_state (GstElement * element, GstStateChange transition)
{
GstDecklinkSink *decklinksink;
GstStateChangeReturn ret;
g_return_val_if_fail (GST_IS_DECKLINK_SINK (element),
GST_STATE_CHANGE_FAILURE);
decklinksink = GST_DECKLINK_SINK (element);
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
if (!gst_decklink_sink_start (decklinksink)) {
ret = GST_STATE_CHANGE_FAILURE;
goto out;
}
break;
case GST_STATE_CHANGE_READY_TO_PAUSED:
break;
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
break;
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
switch (transition) {
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
gst_decklink_sink_force_stop (decklinksink);
break;
case GST_STATE_CHANGE_PAUSED_TO_READY:
break;
case GST_STATE_CHANGE_READY_TO_NULL:
gst_decklink_sink_stop (decklinksink);
break;
default:
break;
}
out:
return ret;
}
static GstClock *
gst_decklink_sink_provide_clock (GstElement * element)
{
return NULL;
}
static gboolean
gst_decklink_sink_set_clock (GstElement * element, GstClock * clock)
{
return TRUE;
}
static GstIndex *
gst_decklink_sink_get_index (GstElement * element)
{
return NULL;
}
static void
gst_decklink_sink_set_index (GstElement * element, GstIndex * index)
{
}
static gboolean
gst_decklink_sink_send_event (GstElement * element, GstEvent * event)
{
return TRUE;
}
static gboolean
gst_decklink_sink_query (GstElement * element, GstQuery * query)
{
return FALSE;
}
static GstCaps *
gst_decklink_sink_videosink_getcaps (GstPad * pad)
{
GstDecklinkSink *decklinksink;
GstCaps *caps;
decklinksink = GST_DECKLINK_SINK (gst_pad_get_parent (pad));
GST_DEBUG_OBJECT (decklinksink, "getcaps");
caps = gst_decklink_mode_get_caps (decklinksink->mode);
gst_object_unref (decklinksink);
return caps;
}
static gboolean
gst_decklink_sink_videosink_setcaps (GstPad * pad, GstCaps * caps)
{
GstDecklinkSink *decklinksink;
decklinksink = GST_DECKLINK_SINK (gst_pad_get_parent (pad));
GST_DEBUG_OBJECT (decklinksink, "setcaps");
gst_object_unref (decklinksink);
return TRUE;
}
static gboolean
gst_decklink_sink_videosink_acceptcaps (GstPad * pad, GstCaps * caps)
{
GstDecklinkSink *decklinksink;
decklinksink = GST_DECKLINK_SINK (gst_pad_get_parent (pad));
GST_DEBUG_OBJECT (decklinksink, "acceptcaps");
gst_object_unref (decklinksink);
return TRUE;
}
static gboolean
gst_decklink_sink_videosink_activate (GstPad * pad)
{
GstDecklinkSink *decklinksink;
gboolean ret;
decklinksink = GST_DECKLINK_SINK (gst_pad_get_parent (pad));
GST_DEBUG_OBJECT (decklinksink, "activate");
if (gst_pad_check_pull_range (pad)) {
GST_DEBUG_OBJECT (pad, "activating pull");
ret = gst_pad_activate_pull (pad, TRUE);
} else {
GST_DEBUG_OBJECT (pad, "activating push");
ret = gst_pad_activate_push (pad, TRUE);
}
gst_object_unref (decklinksink);
return ret;
}
static gboolean
gst_decklink_sink_videosink_activatepush (GstPad * pad, gboolean active)
{
GstDecklinkSink *decklinksink;
decklinksink = GST_DECKLINK_SINK (gst_pad_get_parent (pad));
GST_DEBUG_OBJECT (decklinksink, "activatepush");
gst_object_unref (decklinksink);
return TRUE;
}
static gboolean
gst_decklink_sink_videosink_activatepull (GstPad * pad, gboolean active)
{
GstDecklinkSink *decklinksink;
decklinksink = GST_DECKLINK_SINK (gst_pad_get_parent (pad));
GST_DEBUG_OBJECT (decklinksink, "activatepull");
gst_object_unref (decklinksink);
return TRUE;
}
static GstPadLinkReturn
gst_decklink_sink_videosink_link (GstPad * pad, GstPad * peer)
{
GstDecklinkSink *decklinksink;
decklinksink = GST_DECKLINK_SINK (gst_pad_get_parent (pad));
GST_DEBUG_OBJECT (decklinksink, "link");
gst_object_unref (decklinksink);
return GST_PAD_LINK_OK;
}
static GstFlowReturn
gst_decklink_sink_videosink_chain (GstPad * pad, GstBuffer * buffer)
{
GstDecklinkSink *decklinksink;
IDeckLinkMutableVideoFrame *frame;
void *data;
GstFlowReturn ret;
const GstDecklinkMode *mode;
decklinksink = GST_DECKLINK_SINK (gst_pad_get_parent (pad));
GST_DEBUG_OBJECT (decklinksink, "chain");
#if 0
if (!decklinksink->video_enabled) {
HRESULT ret;
ret = decklinksink->output->EnableVideoOutput (decklinksink->display_mode,
bmdVideoOutputFlagDefault);
if (ret != S_OK) {
GST_ERROR ("failed to enable video output");
//return FALSE;
}
decklinksink->video_enabled = TRUE;
}
#endif
mode = gst_decklink_get_mode (decklinksink->mode);
decklinksink->output->CreateVideoFrame (mode->width,
mode->height, mode->width * 2, bmdFormat8BitYUV,
bmdFrameFlagDefault, &frame);
frame->GetBytes (&data);
memcpy (data, GST_BUFFER_DATA (buffer), GST_BUFFER_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_WRONG_STATE;
}
frame->Release ();
gst_object_unref (decklinksink);
return ret;
}
static GstFlowReturn
gst_decklink_sink_videosink_chainlist (GstPad * pad, GstBufferList * bufferlist)
{
GstDecklinkSink *decklinksink;
decklinksink = GST_DECKLINK_SINK (gst_pad_get_parent (pad));
GST_DEBUG_OBJECT (decklinksink, "chainlist");
gst_object_unref (decklinksink);
return GST_FLOW_OK;
}
static gboolean
gst_decklink_sink_videosink_event (GstPad * pad, GstEvent * event)
{
gboolean res;
GstDecklinkSink *decklinksink;
decklinksink = GST_DECKLINK_SINK (gst_pad_get_parent (pad));
GST_DEBUG_OBJECT (decklinksink, "event");
switch (GST_EVENT_TYPE (event)) {
default:
res = gst_pad_event_default (pad, event);
break;
}
gst_object_unref (decklinksink);
return res;
}
static gboolean
gst_decklink_sink_videosink_query (GstPad * pad, GstQuery * query)
{
gboolean res;
GstDecklinkSink *decklinksink;
decklinksink = GST_DECKLINK_SINK (gst_pad_get_parent (pad));
GST_DEBUG_OBJECT (decklinksink, "query");
switch (GST_QUERY_TYPE (query)) {
default:
res = gst_pad_query_default (pad, query);
break;
}
gst_object_unref (decklinksink);
return res;
}
static GstFlowReturn
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gst_decklink_sink_videosink_bufferalloc (GstPad * pad, guint64 offset,
guint size, GstCaps * caps, GstBuffer ** buf)
{
GstDecklinkSink *decklinksink;
decklinksink = GST_DECKLINK_SINK (gst_pad_get_parent (pad));
GST_DEBUG_OBJECT (decklinksink, "bufferalloc");
*buf = gst_buffer_new_and_alloc (size);
gst_buffer_set_caps (*buf, caps);
gst_object_unref (decklinksink);
return GST_FLOW_OK;
}
static GstIterator *
gst_decklink_sink_videosink_iterintlink (GstPad * pad)
{
GstDecklinkSink *decklinksink;
GstIterator *iter;
decklinksink = GST_DECKLINK_SINK (gst_pad_get_parent (pad));
GST_DEBUG_OBJECT (decklinksink, "iterintlink");
iter = gst_pad_iterate_internal_links_default (pad);
gst_object_unref (decklinksink);
return iter;
}
static GstCaps *
gst_decklink_sink_audiosink_getcaps (GstPad * pad)
{
GstDecklinkSink *decklinksink;
GstCaps *caps;
decklinksink = GST_DECKLINK_SINK (gst_pad_get_parent (pad));
GST_DEBUG_OBJECT (decklinksink, "getcaps");
caps = gst_caps_copy (gst_pad_get_pad_template_caps (pad));
gst_object_unref (decklinksink);
return caps;
}
static gboolean
gst_decklink_sink_audiosink_setcaps (GstPad * pad, GstCaps * caps)
{
GstDecklinkSink *decklinksink;
decklinksink = GST_DECKLINK_SINK (gst_pad_get_parent (pad));
GST_DEBUG_OBJECT (decklinksink, "setcaps");
gst_object_unref (decklinksink);
return TRUE;
}
static gboolean
gst_decklink_sink_audiosink_acceptcaps (GstPad * pad, GstCaps * caps)
{
GstDecklinkSink *decklinksink;
decklinksink = GST_DECKLINK_SINK (gst_pad_get_parent (pad));
GST_DEBUG_OBJECT (decklinksink, "acceptcaps");
gst_object_unref (decklinksink);
return TRUE;
}
static gboolean
gst_decklink_sink_audiosink_activate (GstPad * pad)
{
GstDecklinkSink *decklinksink;
gboolean ret;
decklinksink = GST_DECKLINK_SINK (gst_pad_get_parent (pad));
GST_DEBUG_OBJECT (decklinksink, "activate");
if (gst_pad_check_pull_range (pad)) {
GST_DEBUG_OBJECT (pad, "activating pull");
ret = gst_pad_activate_pull (pad, TRUE);
} else {
GST_DEBUG_OBJECT (pad, "activating push");
ret = gst_pad_activate_push (pad, TRUE);
}
gst_object_unref (decklinksink);
return ret;
}
static gboolean
gst_decklink_sink_audiosink_activatepush (GstPad * pad, gboolean active)
{
GstDecklinkSink *decklinksink;
decklinksink = GST_DECKLINK_SINK (gst_pad_get_parent (pad));
GST_DEBUG_OBJECT (decklinksink, "activatepush");
gst_object_unref (decklinksink);
return TRUE;
}
static gboolean
gst_decklink_sink_audiosink_activatepull (GstPad * pad, gboolean active)
{
GstDecklinkSink *decklinksink;
decklinksink = GST_DECKLINK_SINK (gst_pad_get_parent (pad));
GST_DEBUG_OBJECT (decklinksink, "activatepull");
gst_object_unref (decklinksink);
return TRUE;
}
static GstPadLinkReturn
gst_decklink_sink_audiosink_link (GstPad * pad, GstPad * peer)
{
GstDecklinkSink *decklinksink;
decklinksink = GST_DECKLINK_SINK (gst_pad_get_parent (pad));
GST_DEBUG_OBJECT (decklinksink, "link");
gst_object_unref (decklinksink);
return GST_PAD_LINK_OK;
}
static GstFlowReturn
gst_decklink_sink_audiosink_chain (GstPad * pad, GstBuffer * buffer)
{
GstDecklinkSink *decklinksink;
GstFlowReturn ret;
decklinksink = GST_DECKLINK_SINK (gst_pad_get_parent (pad));
GST_DEBUG_OBJECT (decklinksink, "chain");
// concatenate both buffers
g_mutex_lock (decklinksink->audio_mutex);
decklinksink->audio_buffer =
gst_buffer_join (decklinksink->audio_buffer, buffer);
g_mutex_unlock (decklinksink->audio_mutex);
// GST_DEBUG("Audio Buffer Size: %d", GST_BUFFER_SIZE (decklinksink->audio_buffer));
gst_object_unref (decklinksink);
ret = GST_FLOW_OK;
return ret;
}
static GstFlowReturn
gst_decklink_sink_audiosink_chainlist (GstPad * pad, GstBufferList * bufferlist)
{
GstDecklinkSink *decklinksink;
decklinksink = GST_DECKLINK_SINK (gst_pad_get_parent (pad));
GST_DEBUG_OBJECT (decklinksink, "chainlist");
gst_object_unref (decklinksink);
return GST_FLOW_OK;
}
static gboolean
gst_decklink_sink_audiosink_event (GstPad * pad, GstEvent * event)
{
gboolean res;
GstDecklinkSink *decklinksink;
decklinksink = GST_DECKLINK_SINK (gst_pad_get_parent (pad));
GST_DEBUG_OBJECT (decklinksink, "event");
switch (GST_EVENT_TYPE (event)) {
default:
res = gst_pad_event_default (pad, event);
break;
}
gst_object_unref (decklinksink);
return res;
}
static gboolean
gst_decklink_sink_audiosink_query (GstPad * pad, GstQuery * query)
{
gboolean res;
GstDecklinkSink *decklinksink;
decklinksink = GST_DECKLINK_SINK (gst_pad_get_parent (pad));
GST_DEBUG_OBJECT (decklinksink, "query");
switch (GST_QUERY_TYPE (query)) {
default:
res = gst_pad_query_default (pad, query);
break;
}
gst_object_unref (decklinksink);
return res;
}
static GstFlowReturn
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gst_decklink_sink_audiosink_bufferalloc (GstPad * pad, guint64 offset,
guint size, GstCaps * caps, GstBuffer ** buf)
{
GstDecklinkSink *decklinksink;
decklinksink = GST_DECKLINK_SINK (gst_pad_get_parent (pad));
GST_DEBUG_OBJECT (decklinksink, "bufferalloc");
*buf = gst_buffer_new_and_alloc (size);
gst_buffer_set_caps (*buf, caps);
gst_object_unref (decklinksink);
return GST_FLOW_OK;
}
static GstIterator *
gst_decklink_sink_audiosink_iterintlink (GstPad * pad)
{
GstDecklinkSink *decklinksink;
GstIterator *iter;
decklinksink = GST_DECKLINK_SINK (gst_pad_get_parent (pad));
GST_DEBUG_OBJECT (decklinksink, "iterintlink");
iter = gst_pad_iterate_internal_links_default (pad);
gst_object_unref (decklinksink);
return iter;
}
HRESULT
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Output::ScheduledFrameCompleted (IDeckLinkVideoFrame * completedFrame,
BMDOutputFrameCompletionResult result)
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{
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 ()
{
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GST_ERROR ("ScheduledPlaybackHasStopped");
return S_OK;
}
HRESULT Output::RenderAudioSamples (bool preroll)
{
guint
samplesWritten;
GstBuffer *
buffer;
// guint64 samplesToWrite;
if (decklinksink->stop) {
GST_DEBUG ("decklinksink->stop set TRUE!");
decklinksink->output->BeginAudioPreroll ();
// running = true;
} else {
g_mutex_lock (decklinksink->audio_mutex);
decklinksink->output->ScheduleAudioSamples (GST_BUFFER_DATA (decklinksink->audio_buffer), GST_BUFFER_SIZE (decklinksink->audio_buffer) / 4, // 2 bytes per sample, stereo
0, 0, &samplesWritten);
buffer =
gst_buffer_new_and_alloc (GST_BUFFER_SIZE (decklinksink->audio_buffer) -
(samplesWritten * 4));
memcpy (GST_BUFFER_DATA (buffer),
GST_BUFFER_DATA (decklinksink->audio_buffer) + (samplesWritten * 4),
GST_BUFFER_SIZE (decklinksink->audio_buffer) - (samplesWritten * 4));
gst_buffer_unref (decklinksink->audio_buffer);
decklinksink->audio_buffer = buffer;
g_mutex_unlock (decklinksink->audio_mutex);
}
GST_DEBUG ("RenderAudioSamples");
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return S_OK;
}