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avc: Save AVC objects in the GstAVCSrc object

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and stop them when the pipeline is stopped
This commit is contained in:
Quentin Smith 2011-04-18 15:37:57 -04:00 committed by David Schleef
parent 7ac4cd7ef5
commit 004f2541e4
2 changed files with 30 additions and 21 deletions
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44
sys/avc/gstavcsrc.cpp
View file

@ -250,12 +250,6 @@ static gboolean
gst_avc_src_start (GstBaseSrc * src)
{
GstAVCSrc *avcsrc = GST_AVC_SRC (src);
#ifdef ENABLE
AVCDeviceController *pAVCDeviceController = nil;
AVCDevice *pAVCDevice;
AVCDeviceStream *pAVCDeviceStream;
int deviceIndex = 0;
#endif
GST_DEBUG_OBJECT (avcsrc, "start");
@ -263,8 +257,9 @@ gst_avc_src_start (GstBaseSrc * src)
#ifdef ENABLE
// Create a AVCDeviceController
CreateAVCDeviceController (&pAVCDeviceController);
if (!pAVCDeviceController) {
if (!avcsrc->pAVCDeviceController)
CreateAVCDeviceController (&avcsrc->pAVCDeviceController);
if (!avcsrc->pAVCDeviceController) {
// TODO: This should never happen (unless we've run out of memory), but we should handle it cleanly anyway
GST_ERROR ("Failed to create AVC device controller.");
return FALSE;
@ -272,35 +267,35 @@ gst_avc_src_start (GstBaseSrc * src)
GST_INFO ("Created AVC device controller.");
if (deviceIndex >= CFArrayGetCount (pAVCDeviceController->avcDeviceArray)) {
GST_ERROR ("Failed to find AVC device %d", deviceIndex);
if (avcsrc->deviceIndex >= CFArrayGetCount (avcsrc->pAVCDeviceController->avcDeviceArray)) {
GST_ERROR ("Failed to find AVC device %d", avcsrc->deviceIndex);
return FALSE;
}
pAVCDevice = (AVCDevice *)
CFArrayGetValueAtIndex (pAVCDeviceController->avcDeviceArray,
deviceIndex);
avcsrc->pAVCDevice = (AVCDevice *)
CFArrayGetValueAtIndex (avcsrc->pAVCDeviceController->avcDeviceArray,
avcsrc->deviceIndex);
if (!pAVCDevice) {
GST_ERROR ("Failed to find AVC device %d", deviceIndex);
if (!avcsrc->pAVCDevice) {
GST_ERROR ("Failed to find AVC device %d", avcsrc->deviceIndex);
return FALSE;
}
GST_INFO ("Found device with GUID 0x%016llX\n", pAVCDevice->guid);
GST_INFO ("Found device with GUID 0x%016llX\n", avcsrc->pAVCDevice->guid);
pAVCDevice->openDevice (nil, nil);
avcsrc->pAVCDevice->openDevice (nil, nil);
pAVCDeviceStream = pAVCDevice->CreateMPEGReceiverForDevicePlug (0, nil, // We'll install the structured callback later (MyStructuredDataPushProc),
avcsrc->pAVCDeviceStream = avcsrc->pAVCDevice->CreateMPEGReceiverForDevicePlug (0, nil, // We'll install the structured callback later (MyStructuredDataPushProc),
nil,
MPEGReceiverMessageReceivedProc,
nil,
nil, kNumCyclesInMPEGReceiverSegment, kNumSegmentsInMPEGReceiverProgram);
pAVCDeviceStream->pMPEGReceiver->registerStructuredDataPushCallback
avcsrc->pAVCDeviceStream->pMPEGReceiver->registerStructuredDataPushCallback
(MyStructuredDataPushProc,
kNumCyclesInMPEGReceiverSegment, (void *) avcsrc);
pAVCDevice->StartAVCDeviceStream (pAVCDeviceStream);
avcsrc->pAVCDevice->StartAVCDeviceStream (avcsrc->pAVCDeviceStream);
#endif
return TRUE;
@ -314,7 +309,14 @@ gst_avc_src_stop (GstBaseSrc * src)
GST_DEBUG_OBJECT (avcsrc, "stop");
/* FIXME do whatever is needed to stop capture */
// Stop the stream
avcsrc->pAVCDevice->StopAVCDeviceStream(avcsrc->pAVCDeviceStream);
// Destroy the stream
avcsrc->pAVCDevice->DestroyAVCDeviceStream(avcsrc->pAVCDeviceStream);
avcsrc->pAVCDeviceStream = nil;
// Forget about the device (don't destroy it; pAVCDeviceController manages it)
avcsrc->pAVCDevice = nil;
while ((buffer = GST_BUFFER (gst_atomic_queue_pop (avcsrc->queue))) != NULL) {
gst_buffer_unref (buffer);

7
sys/avc/gstavcsrc.h
View file

@ -21,6 +21,8 @@
#define _GST_AVC_SRC_H_
#include <gst/base/gstbasesrc.h>
#include <AVCVideoServices/AVCVideoServices.h>
using namespace AVS;
G_BEGIN_DECLS
@ -39,6 +41,11 @@ struct _GstAVCSrc
GstPad *srcpad;
AVCDeviceController *pAVCDeviceController;
AVCDevice *pAVCDevice;
AVCDeviceStream *pAVCDeviceStream;
int deviceIndex;
GstAtomicQueue *queue;
GCond *cond;
GMutex *queue_lock;