| /* 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-1.0 -v videotestsrc ! decklinksink |
| * ]| |
| * </refsect2> |
| */ |
| |
| #ifdef HAVE_CONFIG_H |
| #include "config.h" |
| #endif |
| |
| #include <gst/gst.h> |
| #include <gst/video/video.h> |
| #include "gstdecklink.h" |
| #include "gstdecklinksink.h" |
| #include <string.h> |
| |
| /* FIXME: |
| * - handle ALLOCATION query |
| * - provide buffer pool with suitable strides/alignment for video |
| * - handle video meta |
| */ |
| |
| GST_DEBUG_CATEGORY_STATIC (gst_decklink_sink_debug_category); |
| #define GST_CAT_DEFAULT gst_decklink_sink_debug_category |
| |
| 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_finalize (GObject * object); |
| |
| static GstStateChangeReturn |
| gst_decklink_sink_change_state (GstElement * element, |
| GstStateChange transition); |
| |
| static GstFlowReturn gst_decklink_sink_videosink_chain (GstPad * pad, |
| GstObject * parent, GstBuffer * buffer); |
| static gboolean gst_decklink_sink_videosink_event (GstPad * pad, |
| GstObject * parent, GstEvent * event); |
| static gboolean gst_decklink_sink_videosink_query (GstPad * pad, |
| GstObject * parent, GstQuery * query); |
| |
| static GstFlowReturn gst_decklink_sink_audiosink_chain (GstPad * pad, |
| GstObject * parent, GstBuffer * buffer); |
| static gboolean gst_decklink_sink_audiosink_event (GstPad * pad, |
| GstObject * parent, GstEvent * event); |
| static gboolean gst_decklink_sink_audiosink_query (GstPad * pad, |
| GstObject * parent, GstQuery * query); |
| |
| #ifdef _MSC_VER |
| /* COM initialization/uninitialization thread */ |
| static void gst_decklink_sink_com_thread (GstDecklinkSink * sink); |
| #endif /* _MSC_VER */ |
| |
| enum |
| { |
| PROP_0, |
| PROP_MODE, |
| PROP_DEVICE_NUMBER |
| }; |
| |
| /* pad templates */ |
| |
| /* the video sink pad template is created on the fly */ |
| |
| static GstStaticPadTemplate gst_decklink_sink_audiosink_template = |
| GST_STATIC_PAD_TEMPLATE ("audiosink", |
| GST_PAD_SINK, |
| GST_PAD_ALWAYS, |
| GST_STATIC_CAPS ("audio/x-raw, format=S16LE, channels=2, rate=48000, " |
| "layout=interleaved") |
| ); |
| |
| #define parent_class gst_decklink_sink_parent_class |
| G_DEFINE_TYPE (GstDecklinkSink, gst_decklink_sink, GST_TYPE_ELEMENT); |
| |
| 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->finalize = gst_decklink_sink_finalize; |
| |
| element_class->change_state = |
| GST_DEBUG_FUNCPTR (gst_decklink_sink_change_state); |
| |
| g_object_class_install_property (gobject_class, PROP_MODE, |
| g_param_spec_enum ("mode", "Playback Mode", |
| "Video Mode to use for playback", |
| GST_TYPE_DECKLINK_MODE, GST_DECKLINK_MODE_NTSC, |
| (GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | |
| G_PARAM_CONSTRUCT))); |
| |
| g_object_class_install_property (gobject_class, PROP_DEVICE_NUMBER, |
| g_param_spec_int ("device-number", "Device number", |
| "Output device instance to use", 0, G_MAXINT, 0, |
| (GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | |
| G_PARAM_CONSTRUCT))); |
| |
| gst_element_class_add_pad_template (element_class, |
| gst_pad_template_new ("videosink", GST_PAD_SINK, GST_PAD_ALWAYS, |
| gst_decklink_mode_get_template_caps ())); |
| |
| gst_element_class_add_pad_template (element_class, |
| gst_static_pad_template_get (&gst_decklink_sink_audiosink_template)); |
| |
| gst_element_class_set_static_metadata (element_class, "Decklink Sink", |
| "Video/Sink", "Decklink Sink", "David Schleef <ds@entropywave.com>"); |
| |
| GST_DEBUG_CATEGORY_INIT (gst_decklink_sink_debug_category, "decklinksink", 0, |
| "debug category for decklinksink element"); |
| } |
| |
| static void |
| gst_decklink_sink_init (GstDecklinkSink * decklinksink) |
| { |
| GstDecklinkSinkClass *decklinksink_class; |
| |
| decklinksink_class = GST_DECKLINK_SINK_GET_CLASS (decklinksink); |
| |
| decklinksink->videosinkpad = |
| gst_pad_new_from_template (gst_element_class_get_pad_template |
| (GST_ELEMENT_CLASS (decklinksink_class), "videosink"), "videosink"); |
| gst_pad_set_chain_function (decklinksink->videosinkpad, |
| GST_DEBUG_FUNCPTR (gst_decklink_sink_videosink_chain)); |
| 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_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_chain_function (decklinksink->audiosinkpad, |
| GST_DEBUG_FUNCPTR (gst_decklink_sink_audiosink_chain)); |
| 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_element_add_pad (GST_ELEMENT (decklinksink), decklinksink->audiosinkpad); |
| |
| GST_OBJECT_FLAG_SET (decklinksink, GST_ELEMENT_FLAG_SINK); |
| |
| g_cond_init (&decklinksink->cond); |
| g_mutex_init (&decklinksink->mutex); |
| g_mutex_init (&decklinksink->audio_mutex); |
| g_cond_init (&decklinksink->audio_cond); |
| |
| decklinksink->mode = GST_DECKLINK_MODE_NTSC; |
| decklinksink->device_number = 0; |
| |
| decklinksink->callback = new Output; |
| decklinksink->callback->decklinksink = decklinksink; |
| |
| #ifdef _MSC_VER |
| g_mutex_init (&decklinksink->com_init_lock); |
| g_mutex_init (&decklinksink->com_deinit_lock); |
| g_cond_init (&decklinksink->com_initialized); |
| g_cond_init (&decklinksink->com_uninitialize); |
| g_cond_init (&decklinksink->com_uninitialized); |
| |
| g_mutex_lock (&decklinksink->com_init_lock); |
| |
| /* create the COM initialization thread */ |
| g_thread_create ((GThreadFunc) gst_decklink_sink_com_thread, |
| decklinksink, FALSE, NULL); |
| |
| /* wait until the COM thread signals that COM has been initialized */ |
| g_cond_wait (&decklinksink->com_initialized, &decklinksink->com_init_lock); |
| g_mutex_unlock (&decklinksink->com_init_lock); |
| #endif /* _MSC_VER */ |
| } |
| |
| 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; |
| case PROP_DEVICE_NUMBER: |
| decklinksink->device_number = g_value_get_int (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; |
| case PROP_DEVICE_NUMBER: |
| g_value_set_int (value, decklinksink->device_number); |
| break; |
| default: |
| G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec); |
| break; |
| } |
| } |
| |
| #ifdef _MSC_VER |
| static void |
| gst_decklink_sink_com_thread (GstDecklinkSink * sink) |
| { |
| HRESULT res; |
| |
| g_mutex_lock (sink->com_init_lock); |
| |
| /* Initialize COM with a MTA for this process. This thread will |
| * be the first one to enter the apartement and the last one to leave |
| * it, unitializing COM properly */ |
| |
| res = CoInitializeEx (0, COINIT_MULTITHREADED); |
| if (res == S_FALSE) |
| GST_WARNING_OBJECT (sink, |
| "COM has been already initialized in the same process"); |
| else if (res == RPC_E_CHANGED_MODE) |
| GST_WARNING_OBJECT (sink, "The concurrency model of COM has changed."); |
| else |
| GST_INFO_OBJECT (sink, "COM intialized succesfully"); |
| |
| sink->comInitialized = TRUE; |
| |
| /* Signal other threads waiting on this condition that COM was initialized */ |
| g_cond_signal (sink->com_initialized); |
| |
| g_mutex_unlock (sink->com_init_lock); |
| |
| /* Wait until the unitialize condition is met to leave the COM apartement */ |
| g_mutex_lock (sink->com_deinit_lock); |
| g_cond_wait (sink->com_uninitialize, sink->com_deinit_lock); |
| |
| CoUninitialize (); |
| GST_INFO_OBJECT (sink, "COM unintialized succesfully"); |
| sink->comInitialized = FALSE; |
| g_cond_signal (sink->com_uninitialized); |
| g_mutex_unlock (sink->com_deinit_lock); |
| } |
| #endif /* _MSC_VER */ |
| |
| void |
| gst_decklink_sink_finalize (GObject * object) |
| { |
| GstDecklinkSink *decklinksink; |
| |
| decklinksink = GST_DECKLINK_SINK (object); |
| |
| g_cond_clear (&decklinksink->cond); |
| g_mutex_clear (&decklinksink->mutex); |
| g_cond_clear (&decklinksink->audio_cond); |
| g_mutex_clear (&decklinksink->audio_mutex); |
| |
| delete decklinksink->callback; |
| |
| #ifdef _MSC_VER |
| /* signal the COM thread that it should uninitialize COM */ |
| if (decklinksink->comInitialized) { |
| g_mutex_lock (&decklinksink->com_deinit_lock); |
| g_cond_signal (&decklinksink->com_uninitialize); |
| g_cond_wait (&decklinksink->com_uninitialized, |
| &decklinksink->com_deinit_lock); |
| g_mutex_unlock (&decklinksink->com_deinit_lock); |
| } |
| |
| g_mutex_clear (&decklinksink->com_init_lock); |
| g_mutex_clear (&decklinksink->com_deinit_lock); |
| g_cond_clear (&decklinksink->com_initialized); |
| g_cond_clear (&decklinksink->com_uninitialize); |
| g_cond_clear (&decklinksink->com_uninitialized); |
| #endif /* _MSC_VER */ |
| |
| G_OBJECT_CLASS (parent_class)->finalize (object); |
| } |
| |
| static gboolean |
| gst_decklink_sink_start (GstDecklinkSink * decklinksink) |
| { |
| HRESULT ret; |
| const GstDecklinkMode *mode; |
| BMDAudioSampleType sample_depth; |
| |
| decklinksink->decklink = gst_decklink_get_nth_device (decklinksink->device_number); |
| if (!decklinksink->decklink) { |
| GST_WARNING ("failed to get device %d", decklinksink->device_number); |
| return FALSE; |
| } |
| |
| decklinksink->output = gst_decklink_get_nth_output (decklinksink->device_number); |
| |
| decklinksink->output->SetAudioCallback (decklinksink->callback); |
| |
| mode = gst_decklink_get_mode (decklinksink->mode); |
| |
| ret = decklinksink->output->EnableVideoOutput (mode->mode, |
| bmdVideoOutputFlagDefault); |
| if (ret != S_OK) { |
| GST_WARNING ("failed to enable video output"); |
| return FALSE; |
| } |
| //decklinksink->video_enabled = TRUE; |
| |
| decklinksink->output->SetScheduledFrameCompletionCallback (decklinksink-> |
| callback); |
| |
| sample_depth = bmdAudioSampleType16bitInteger; |
| ret = decklinksink->output->EnableAudioOutput (bmdAudioSampleRate48kHz, |
| sample_depth, 2, bmdAudioOutputStreamContinuous); |
| if (ret != S_OK) { |
| GST_WARNING ("failed to enable audio output"); |
| return FALSE; |
| } |
| decklinksink->audio_adapter = gst_adapter_new (); |
| |
| decklinksink->num_frames = 0; |
| |
| return TRUE; |
| } |
| |
| static gboolean |
| 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); |
| |
| g_mutex_lock (&decklinksink->audio_mutex); |
| g_cond_signal (&decklinksink->audio_cond); |
| g_mutex_unlock (&decklinksink->audio_mutex); |
| |
| return TRUE; |
| } |
| |
| static gboolean |
| 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; |
| |
| 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 GstFlowReturn |
| gst_decklink_sink_videosink_chain (GstPad * pad, GstObject * parent, |
| GstBuffer * buffer) |
| { |
| GstDecklinkSink *decklinksink; |
| IDeckLinkMutableVideoFrame *frame; |
| void *data; |
| GstFlowReturn ret; |
| const GstDecklinkMode *mode; |
| |
| decklinksink = GST_DECKLINK_SINK (parent); |
| |
| #if 0 |
| if (!decklinksink->video_enabled) { |
| HRESULT ret; |
| ret = decklinksink->output->EnableVideoOutput (decklinksink->display_mode, |
| bmdVideoOutputFlagDefault); |
| if (ret != S_OK) { |
| GST_WARNING ("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, decklinksink->pixel_format, |
| bmdFrameFlagDefault, &frame); |
| |
| 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; |
| } |