libbpg-0.9.3

jctvc/TLibCommon/NAL.h

@@ -0,0 +1,118 @@
+/* The copyright in this software is being made available under the BSD
+ * License, included below. This software may be subject to other third party
+ * and contributor rights, including patent rights, and no such rights are
+ * granted under this license.
+ *
+ * Copyright (c) 2010-2014, ITU/ISO/IEC
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *  * Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ *  * 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.
+ *  * Neither the name of the ITU/ISO/IEC 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 HOLDER 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.
+ */
+
+#pragma once
+
+#ifndef __NAL__
+#define __NAL__
+
+#include <vector>
+#include <sstream>
+#include "CommonDef.h"
+
+class TComOutputBitstream;
+
+/**
+ * Represents a single NALunit header and the associated RBSPayload
+ */
+struct NALUnit
+{
+  NalUnitType m_nalUnitType; ///< nal_unit_type
+  UInt        m_temporalId;  ///< temporal_id
+  UInt        m_reservedZero6Bits; ///< reserved_zero_6bits
+
+  /** construct an NALunit structure with given header values. */
+  NALUnit(
+    NalUnitType nalUnitType,
+    Int         temporalId = 0,
+    Int         reservedZero6Bits = 0)
+    :m_nalUnitType (nalUnitType)
+    ,m_temporalId  (temporalId)
+    ,m_reservedZero6Bits(reservedZero6Bits)
+  {}
+
+  /** default constructor - no initialization; must be perfomed by user */
+  NALUnit() {}
+
+  /** returns true if the NALunit is a slice NALunit */
+  Bool isSlice()
+  {
+    return m_nalUnitType == NAL_UNIT_CODED_SLICE_TRAIL_R
+        || m_nalUnitType == NAL_UNIT_CODED_SLICE_TRAIL_N
+        || m_nalUnitType == NAL_UNIT_CODED_SLICE_TSA_R
+        || m_nalUnitType == NAL_UNIT_CODED_SLICE_TSA_N
+        || m_nalUnitType == NAL_UNIT_CODED_SLICE_STSA_R
+        || m_nalUnitType == NAL_UNIT_CODED_SLICE_STSA_N
+        || m_nalUnitType == NAL_UNIT_CODED_SLICE_BLA_W_LP
+        || m_nalUnitType == NAL_UNIT_CODED_SLICE_BLA_W_RADL
+        || m_nalUnitType == NAL_UNIT_CODED_SLICE_BLA_N_LP
+        || m_nalUnitType == NAL_UNIT_CODED_SLICE_IDR_W_RADL
+        || m_nalUnitType == NAL_UNIT_CODED_SLICE_IDR_N_LP
+        || m_nalUnitType == NAL_UNIT_CODED_SLICE_CRA
+        || m_nalUnitType == NAL_UNIT_CODED_SLICE_RADL_N
+        || m_nalUnitType == NAL_UNIT_CODED_SLICE_RADL_R
+        || m_nalUnitType == NAL_UNIT_CODED_SLICE_RASL_N
+        || m_nalUnitType == NAL_UNIT_CODED_SLICE_RASL_R;
+  }
+  Bool isSei()
+  {
+    return m_nalUnitType == NAL_UNIT_PREFIX_SEI
+        || m_nalUnitType == NAL_UNIT_SUFFIX_SEI;
+  }
+
+  Bool isVcl()
+  {
+    return ( (UInt)m_nalUnitType < 32 );
+  }
+};
+
+struct OutputNALUnit;
+
+/**
+ * A single NALunit, with complete payload in EBSP format.
+ */
+struct NALUnitEBSP : public NALUnit
+{
+  std::ostringstream m_nalUnitData;
+
+  /**
+   * convert the OutputNALUnit #nalu# into EBSP format by writing out
+   * the NALUnit header, then the rbsp_bytes including any
+   * emulation_prevention_three_byte symbols.
+   */
+  NALUnitEBSP(OutputNALUnit& nalu);
+};
+//! \}
+//! \}
+
+#endif