static GstStateChangeReturn
gst_vtenc_change_state (GstElement * element, GstStateChange transition)
{
GstVTEnc *self = GST_VTENC_CAST (element);
GError *error = NULL;
GstStateChangeReturn ret;
if (transition == GST_STATE_CHANGE_NULL_TO_READY) {
self->ctx = gst_core_media_ctx_new (GST_API_CORE_VIDEO | GST_API_CORE_MEDIA
| GST_API_VIDEO_TOOLBOX, &error);
if (error != NULL)
goto api_error;
self->cur_outbufs = g_ptr_array_new ();
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
if (transition == GST_STATE_CHANGE_READY_TO_NULL) {
GST_OBJECT_LOCK (self);
gst_vtenc_destroy_session (self, &self->session);
if (self->options != NULL) {
CFRelease (self->options);
self->options = NULL;
}
self->negotiated_width = self->negotiated_height = 0;
self->negotiated_fps_n = self->negotiated_fps_d = 0;
gst_vtenc_clear_cached_caps_downstream (self);
GST_OBJECT_UNLOCK (self);
g_ptr_array_free (self->cur_outbufs, TRUE);
self->cur_outbufs = NULL;
g_object_unref (self->ctx);
self->ctx = NULL;
}
return ret;
api_error:
{
GST_ELEMENT_ERROR (self, RESOURCE, FAILED, ("API error"),
("%s", error->message));
g_clear_error (&error);
return GST_STATE_CHANGE_FAILURE;
}
}
static GstStateChangeReturn
gst_vtdec_change_state (GstElement * element, GstStateChange transition)
{
GstVTDec *self = GST_VTDEC_CAST (element);
GError *error = NULL;
GstStateChangeReturn ret;
if (transition == GST_STATE_CHANGE_NULL_TO_READY) {
self->ctx = gst_core_media_ctx_new (GST_API_CORE_VIDEO | GST_API_CORE_MEDIA
| GST_API_VIDEO_TOOLBOX, &error);
if (error != NULL)
goto api_error;
self->cur_outbufs = g_ptr_array_new ();
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
if (transition == GST_STATE_CHANGE_READY_TO_NULL) {
gst_vtdec_destroy_session (self, &self->session);
self->ctx->cm->FigFormatDescriptionRelease (self->fmt_desc);
self->fmt_desc = NULL;
gst_video_info_init (&self->vinfo);
g_ptr_array_free (self->cur_outbufs, TRUE);
self->cur_outbufs = NULL;
g_object_unref (self->ctx);
self->ctx = NULL;
}
return ret;
api_error:
{
GST_ELEMENT_ERROR (self, RESOURCE, FAILED, ("API error"),
("%s", error->message));
g_clear_error (&error);
return GST_STATE_CHANGE_FAILURE;
}
}
static gboolean
gst_cel_video_src_open_device (GstCelVideoSrc * self)
{
GstCoreMediaCtx *ctx = NULL;
GError *error = NULL;
GstCMApi *cm = NULL;
GstMTApi *mt = NULL;
GstCelApi *cel = NULL;
OSStatus status;
FigCaptureDeviceRef device = NULL;
FigBaseObjectRef device_base;
FigBaseVTable *device_vt;
CFArrayRef stream_array = NULL;
CFIndex stream_index;
FigCaptureStreamRef stream = NULL;
FigBaseObjectRef stream_base;
FigBaseVTable *stream_vt;
CMBufferQueueRef queue = NULL;
CMTime ignored_time;
ctx = gst_core_media_ctx_new (GST_API_CORE_VIDEO | GST_API_CORE_MEDIA
| GST_API_MEDIA_TOOLBOX | GST_API_CELESTIAL, &error);
if (error != NULL)
goto api_error;
cm = ctx->cm;
mt = ctx->mt;
cel = ctx->cel;
status = cel->FigCreateCaptureDevicesAndStreamsForPreset (NULL,
*(cel->kFigRecorderCapturePreset_VideoRecording), NULL,
&device, &stream, NULL, NULL);
if (status == kCelError_ResourceBusy)
goto device_busy;
else if (status != noErr)
goto unexpected_error;
device_base = mt->FigCaptureDeviceGetFigBaseObject (device);
device_vt = cm->FigBaseObjectGetVTable (device_base);
status = device_vt->base->CopyProperty (device_base,
*(mt->kFigCaptureDeviceProperty_StreamArray), NULL,
(CFTypeRef *) & stream_array);
if (status != noErr)
goto unexpected_error;
if (self->device_index >= 0)
stream_index = self->device_index;
else
stream_index = 0;
if (stream_index >= CFArrayGetCount (stream_array))
goto invalid_device_index;
CFRelease (stream);
stream = (FigCaptureStreamRef) CFArrayGetValueAtIndex (stream_array,
stream_index);
CFRetain (stream);
stream_base = mt->FigCaptureStreamGetFigBaseObject (stream);
stream_vt = cm->FigBaseObjectGetVTable (stream_base);
status = stream_vt->base->CopyProperty (stream_base,
*(mt->kFigCaptureStreamProperty_BufferQueue), NULL, &queue);
if (status != noErr)
goto unexpected_error;
self->queue_is_ready = FALSE;
ignored_time = cm->CMTimeMake (1, 1);
status = cm->CMBufferQueueInstallTrigger (queue,
gst_cel_video_src_on_queue_ready, self,
kCMBufferQueueTrigger_WhenDataBecomesReady, ignored_time,
&self->ready_trigger);
if (status != noErr)
goto unexpected_error;
self->ctx = ctx;
self->device = device;
self->device_iface = device_vt->derived;
self->device_base = device_base;
self->device_base_iface = device_vt->base;
self->stream = stream;
self->stream_iface = stream_vt->derived;
self->stream_base = stream_base;
self->stream_base_iface = stream_vt->base;
self->queue = queue;
self->duration = GST_CLOCK_TIME_NONE;
CFRelease (stream_array);
return TRUE;
/* ERRORS */
api_error:
{
GST_ELEMENT_ERROR (self, RESOURCE, FAILED, ("API error"),
("%s", error->message));
g_clear_error (&error);
goto any_error;
}
device_busy:
{
GST_ELEMENT_ERROR (self, RESOURCE, BUSY,
("device is already in use"), (NULL));
goto any_error;
}
invalid_device_index:
{
GST_ELEMENT_ERROR (self, RESOURCE, NOT_FOUND,
("invalid video capture device index"), (NULL));
goto any_error;
}
unexpected_error:
{
GST_ELEMENT_ERROR (self, RESOURCE, FAILED,
("unexpected error while opening device (%d)", (gint) status), (NULL));
goto any_error;
}
any_error:
{
if (stream != NULL)
CFRelease (stream);
if (stream_array != NULL)
CFRelease (stream_array);
if (device != NULL)
CFRelease (device);
if (ctx != NULL) {
cm->FigBufferQueueRelease (queue);
g_object_unref (ctx);
}
return FALSE;
}
}
static gboolean
gst_mio_video_src_open_device (GstMIOVideoSrc * self)
{
GError *error = NULL;
GList *devices = NULL, *walk;
guint device_idx;
self->ctx = gst_core_media_ctx_new (GST_API_CORE_VIDEO | GST_API_CORE_MEDIA
| GST_API_MIO, &error);
if (error != NULL)
goto api_error;
devices = gst_mio_video_device_list_create (self->ctx);
if (devices == NULL)
goto no_devices;
for (walk = devices, device_idx = 0; walk != NULL; walk = walk->next) {
GstMIOVideoDevice *device = walk->data;
gboolean match;
if (self->device_uid != NULL) {
match = g_ascii_strcasecmp (gst_mio_video_device_get_uid (device),
self->device_uid) == 0;
} else if (self->device_name != NULL) {
match = g_ascii_strcasecmp (gst_mio_video_device_get_name (device),
self->device_name) == 0;
} else if (self->device_index >= 0) {
match = device_idx == self->device_index;
} else {
match = TRUE; /* pick the first entry */
}
if (self->device != NULL)
match = FALSE;
GST_DEBUG_OBJECT (self, "%c device[%u] = handle: %d name: '%s' uid: '%s'",
(match) ? '*' : '-', device_idx,
gst_mio_video_device_get_handle (device),
gst_mio_video_device_get_name (device),
gst_mio_video_device_get_uid (device));
/*gst_mio_video_device_print_debug_info (device); */
if (match)
self->device = g_object_ref (device);
device_idx++;
}
if (self->device == NULL)
goto no_such_device;
if (!gst_mio_video_device_open (self->device))
goto device_busy_or_gone;
gst_mio_video_device_list_destroy (devices);
return TRUE;
/* ERRORS */
api_error:
{
GST_ELEMENT_ERROR (self, RESOURCE, FAILED, ("API error"),
("%s", error->message));
g_clear_error (&error);
goto any_error;
}
no_devices:
{
GST_ELEMENT_ERROR (self, RESOURCE, NOT_FOUND,
("no video capture devices found"), (NULL));
goto any_error;
}
no_such_device:
{
GST_ELEMENT_ERROR (self, RESOURCE, NOT_FOUND,
("specified video capture device not found"), (NULL));
goto any_error;
}
device_busy_or_gone:
{
GST_ELEMENT_ERROR (self, RESOURCE, BUSY,
("failed to start capture (device already in use or gone)"), (NULL));
goto any_error;
}
any_error:
{
if (devices != NULL) {
gst_mio_video_device_list_destroy (devices);
}
if (self->ctx != NULL) {
g_object_unref (self->ctx);
self->ctx = NULL;
}
return FALSE;
}
}
static GValueArray *
gst_mio_video_src_probe_get_values (GstPropertyProbe * probe, guint prop_id,
const GParamSpec * pspec)
{
GValueArray *values;
GstCoreMediaCtx *ctx = NULL;
GError *error = NULL;
GList *devices = NULL, *walk;
guint device_idx;
values = g_value_array_new (3);
ctx = gst_core_media_ctx_new (GST_MIO_REQUIRED_APIS, &error);
if (error != NULL)
goto beach;
devices = gst_mio_video_device_list_create (ctx);
if (devices == NULL)
goto beach;
for (walk = devices, device_idx = 0; walk != NULL; walk = walk->next) {
GstMIOVideoDevice *device = walk->data;
GValue value = { 0, };
switch (prop_id) {
case PROP_DEVICE_UID:
case PROP_DEVICE_NAME:
{
const gchar *str;
if (prop_id == PROP_DEVICE_UID)
str = gst_mio_video_device_get_uid (device);
else
str = gst_mio_video_device_get_name (device);
g_value_init (&value, G_TYPE_STRING);
g_value_set_string (&value, str);
break;
}
case PROP_DEVICE_INDEX:
{
g_value_init (&value, G_TYPE_INT);
g_value_set_int (&value, device_idx);
break;
}
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (probe, prop_id, pspec);
goto beach;
}
g_value_array_append (values, &value);
g_value_unset (&value);
device_idx++;
}
beach:
if (devices != NULL)
gst_mio_video_device_list_destroy (devices);
if (ctx != NULL)
g_object_unref (ctx);
g_clear_error (&error);
return values;
}
