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/* -LICENSE-START-
** Copyright (c) 2009 Blackmagic Design
**
** Permission is hereby granted, free of charge, to any person or organization
** obtaining a copy of the software and accompanying documentation covered by
** this license (the "Software") to use, reproduce, display, distribute,
** execute, and transmit the Software, and to prepare derivative works of the
** Software, and to permit third-parties to whom the Software is furnished to
** do so, all subject to the following:
**
** The copyright notices in the Software and this entire statement, including
** the above license grant, this restriction and the following disclaimer,
** must be included in all copies of the Software, in whole or in part, and
** all derivative works of the Software, unless such copies or derivative
** works are solely in the form of machine-executable object code generated by
** a source language processor.
**
** THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
** IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
** FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
** SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
** FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
** ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
** DEALINGS IN THE SOFTWARE.
** -LICENSE-END-
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <gst/glib-compat-private.h>
#include "gstdecklinksrc.h"
#include "capture.h"
#define GST_CAT_DEFAULT gst_decklink_src_debug_category
IDeckLink *deckLink;
IDeckLinkInput *deckLinkInput;
IDeckLinkDisplayModeIterator *displayModeIterator;
static BMDTimecodeFormat g_timecodeFormat = (BMDTimecodeFormat) 0;
DeckLinkCaptureDelegate::DeckLinkCaptureDelegate ():m_refCount (0)
{
m_mutex = g_mutex_new ();
}
DeckLinkCaptureDelegate::~DeckLinkCaptureDelegate ()
{
g_mutex_free (m_mutex);
}
ULONG DeckLinkCaptureDelegate::AddRef (void)
{
g_mutex_lock (m_mutex);
m_refCount++;
g_mutex_unlock (m_mutex);
return (ULONG) m_refCount;
}
ULONG DeckLinkCaptureDelegate::Release (void)
{
g_mutex_lock (m_mutex);
m_refCount--;
g_mutex_unlock (m_mutex);
if (m_refCount == 0) {
delete
this;
return 0;
}
return (ULONG) m_refCount;
}
HRESULT
DeckLinkCaptureDelegate::VideoInputFrameArrived (IDeckLinkVideoInputFrame *
videoFrame, IDeckLinkAudioInputPacket * audioFrame)
{
GstDecklinkSrc *decklinksrc;
const char *timecodeString = NULL;
g_return_val_if_fail (priv != NULL, S_OK);
g_return_val_if_fail (GST_IS_DECKLINK_SRC (priv), S_OK);
decklinksrc = GST_DECKLINK_SRC (priv);
if (videoFrame == NULL) {
GST_WARNING_OBJECT (decklinksrc, "video frame is NULL");
return S_OK;
}
if (audioFrame == NULL) {
GST_WARNING_OBJECT (decklinksrc, "audio frame is NULL");
return S_OK;
}
if (videoFrame->GetFlags () & bmdFrameHasNoInputSource) {
GST_DEBUG_OBJECT (decklinksrc, "Frame received - No input signal detected");
return S_OK;
}
if (g_timecodeFormat != 0) {
IDeckLinkTimecode *timecode;
if (videoFrame->GetTimecode (g_timecodeFormat, &timecode) == S_OK) {
timecode->GetString (&timecodeString);
CONVERT_COM_STRING (timecodeString);
}
}
GST_DEBUG_OBJECT (decklinksrc, "Frame received [%s] - %s - Size: %li bytes",
timecodeString != NULL ? timecodeString : "No timecode",
"Valid Frame", videoFrame->GetRowBytes () * videoFrame->GetHeight ());
if (timecodeString)
FREE_COM_STRING (timecodeString);
g_mutex_lock (decklinksrc->mutex);
if (decklinksrc->video_frame != NULL) {
decklinksrc->dropped_frames++;
decklinksrc->video_frame->Release();
if (decklinksrc->audio_frame) {
decklinksrc->audio_frame->Release();
}
}
videoFrame->AddRef ();
decklinksrc->video_frame = videoFrame;
if (audioFrame) {
audioFrame->AddRef ();
decklinksrc->audio_frame = audioFrame;
}
/* increment regardless whether frame was dropped or not */
decklinksrc->frame_num++;
g_cond_signal (decklinksrc->cond);
g_mutex_unlock (decklinksrc->mutex);
return S_OK;
}
HRESULT
DeckLinkCaptureDelegate::VideoInputFormatChanged (
BMDVideoInputFormatChangedEvents events, IDeckLinkDisplayMode * mode,
BMDDetectedVideoInputFormatFlags)
{
GstDecklinkSrc *decklinksrc;
g_return_val_if_fail (priv != NULL, S_OK);
g_return_val_if_fail (GST_IS_DECKLINK_SRC (priv), S_OK);
decklinksrc = GST_DECKLINK_SRC (priv);
GST_ERROR_OBJECT (decklinksrc, "unimplemented: video input format changed");
return S_OK;
}
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