Merge pull request #836 from AVnu/open-avb-next

Open avb next

1 files changed, 87 insertions, 0 deletions

diff --git a/examples/alsa_timed_audio/thread_signal.h b/examples/alsa_timed_audio/thread_signal.h
new file mode 100644
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+++ b/examples/alsa_timed_audio/thread_signal.h
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+/******************************************************************************
+
+  Copyright (c) 2018, Intel Corporation
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without
+  modification, are permitted provided that the following conditions are met:
+
+   1. Redistributions of source code must retain the above copyright notice,
+      this list of conditions and the following disclaimer.
+
+   2. Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+
+   3. Neither the name of the Intel Corporation nor the names of its
+      contributors may be used to endorse or promote products derived from
+      this software without specific prior written permission.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+  POSSIBILITY OF SUCH DAMAGE.
+
+******************************************************************************/
+
+#ifndef THREAD_SIGNAL_H
+#define THREAD_SIGNAL_H
+
+//! \typedef isaudk_signal_t
+//! \brief Signal object handle
+typedef struct isaudk_signal* isaudk_signal_t;
+
+//! \enum isaudk_signal_error_t
+//! \brief Signal API return code
+typedef enum {
+	ISAUDK_SIGNAL_OK,		//!< No error
+	ISAUDK_SIGNAL_SYSERROR,		//!< Internal error
+	ISAUDK_SIGNAL_TIMEDOUT,		//!< Wait timeout
+} isaudk_signal_error_t;
+
+// Signal is created in an unsignaled state
+// Auto-reset on wait
+
+//! \brief Allocate signal object.
+//! \details	Created in unsignalled state
+//!
+//! \param signal[out]		Reference to signal object
+//!
+//! \return Return code
+isaudk_signal_error_t
+isaudk_create_signal( isaudk_signal_t *signal );
+
+//! \brief Free signal object.
+//!
+//! \param signal[in]		Reference to signal object
+//!
+//! \return Return code
+isaudk_signal_error_t
+isaudk_free_signal( isaudk_signal_t signal );
+
+//! \brief Wait for signal.
+//! \details	Set to unsignalled state after successful wait operation
+//!
+//! \param signal[in]		Reference to signal object
+//! \param wait[in]		Number of milliseconds to wait (0 = forever)
+//!
+//! \return Return code
+isaudk_signal_error_t
+isaudk_signal_wait( isaudk_signal_t signal, unsigned wait );
+
+//! \brief Send/set signal.
+//!
+//! \param signal[in]		Reference to signal object
+//!
+//! \return Return code
+isaudk_signal_error_t
+isaudk_signal_send( isaudk_signal_t signal );
+
+#endif/*THREAD_SIGNAL_H*/