static void
convert_frame_new_buffer_callback (GstElement * sink,
GstVideoConvertFrameContext * context)
{
GstBuffer *buf = NULL;
GError *error = NULL;
g_mutex_lock (context->mutex);
if (context->finished)
goto done;
g_signal_emit_by_name (sink, "pull-preroll", &buf);
if (!buf) {
error = g_error_new (GST_CORE_ERROR, GST_CORE_ERROR_FAILED,
"Could not get converted video frame");
}
convert_frame_finish (context, buf, error);
g_signal_handlers_disconnect_by_func (sink, convert_frame_need_data_callback,
context);
done:
g_mutex_unlock (context->mutex);
}
static void
convert_frame_need_data_callback (GstElement * src, guint size,
GstVideoConvertFrameContext * context)
{
GstFlowReturn ret = GST_FLOW_ERROR;
GError *error;
g_mutex_lock (context->mutex);
if (context->finished)
goto done;
g_signal_emit_by_name (src, "push-buffer", context->buffer, &ret);
gst_buffer_unref (context->buffer);
context->buffer = NULL;
if (ret != GST_FLOW_OK) {
GST_ERROR ("Could not push video frame: %s", gst_flow_get_name (ret));
error = g_error_new (GST_CORE_ERROR, GST_CORE_ERROR_FAILED,
"Could not push video frame: %s", gst_flow_get_name (ret));
convert_frame_finish (context, NULL, error);
}
g_signal_handlers_disconnect_by_func (src, convert_frame_need_data_callback,
context);
done:
g_mutex_unlock (context->mutex);
}
static gboolean
convert_frame_bus_callback (GstBus * bus, GstMessage * message,
GstVideoConvertFrameContext * context)
{
g_mutex_lock (context->mutex);
if (context->finished)
goto done;
switch (GST_MESSAGE_TYPE (message)) {
case GST_MESSAGE_ERROR:{
GError *error;
gchar *dbg = NULL;
gst_message_parse_error (message, &error, &dbg);
GST_ERROR ("Could not convert video frame: %s", error->message);
GST_DEBUG ("%s [debug: %s]", error->message, GST_STR_NULL (dbg));
convert_frame_finish (context, NULL, error);
g_free (dbg);
break;
}
default:
break;
}
done:
g_mutex_unlock (context->mutex);
return FALSE;
}
static GstFlowReturn
convert_frame_new_preroll_callback (GstElement * sink,
GstVideoConvertSampleContext * context)
{
GstSample *sample = NULL;
GError *error = NULL;
g_mutex_lock (&context->mutex);
if (context->finished)
goto done;
g_signal_emit_by_name (sink, "pull-preroll", &sample);
if (!sample) {
error = g_error_new (GST_CORE_ERROR, GST_CORE_ERROR_FAILED,
"Could not get converted video sample");
}
convert_frame_finish (context, sample, error);
g_signal_handlers_disconnect_by_func (sink, convert_frame_need_data_callback,
context);
done:
g_mutex_unlock (&context->mutex);
return GST_FLOW_OK;
}
static gboolean
convert_frame_timeout_callback (GstVideoConvertFrameContext * context)
{
GError *error;
g_mutex_lock (context->mutex);
if (context->finished)
goto done;
GST_ERROR ("Could not convert video frame: timeout");
error = g_error_new (GST_CORE_ERROR, GST_CORE_ERROR_FAILED,
"Could not convert video frame: timeout");
convert_frame_finish (context, NULL, error);
done:
g_mutex_unlock (context->mutex);
return FALSE;
}
