Fraunhofer AAC codec.

License boilerplate update to follow.

Change-Id: I2810460c11a58b6d148d84673cc031f3685e79b5

1 files changed, 190 insertions, 0 deletions

diff --git a/libAACenc/src/metadata_compressor.h b/libAACenc/src/metadata_compressor.h
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+/**********************  Fraunhofer IIS FDK AAC Encoder lib  ******************
+
+                        (C) Copyright Fraunhofer IIS (2011)
+                               All Rights Reserved
+
+    Please be advised that this software and/or program delivery is
+    Confidential Information of Fraunhofer and subject to and covered by the
+
+    Fraunhofer IIS Software Evaluation Agreement
+    between Google Inc. and  Fraunhofer
+    effective and in full force since March 1, 2012.
+
+    You may use this software and/or program only under the terms and
+    conditions described in the above mentioned Fraunhofer IIS Software
+    Evaluation Agreement. Any other and/or further use requires a separate agreement.
+
+
+   $Id$
+   Author(s): M. Neusinger
+   Description: Compressor for AAC Metadata Generator
+
+   This software and/or program is protected by copyright law and international
+   treaties. Any reproduction or distribution of this software and/or program,
+   or any portion of it, may result in severe civil and criminal penalties, and
+   will be prosecuted to the maximum extent possible under law.
+
+******************************************************************************/
+
+#ifndef _METADATA_COMPRESSOR_H
+#define _METADATA_COMPRESSOR_H
+
+
+#include "FDK_audio.h"
+#include "common_fix.h"
+
+#include "aacenc.h"
+
+
+/**
+ *  DRC compression profiles.
+ */
+typedef enum DRC_PROFILE {
+  DRC_NONE          = 0,
+  DRC_FILMSTANDARD  = 1,
+  DRC_FILMLIGHT     = 2,
+  DRC_MUSICSTANDARD = 3,
+  DRC_MUSICLIGHT    = 4,
+  DRC_SPEECH        = 5,
+  DRC_DELAY_TEST    = 6
+
+} DRC_PROFILE;
+
+
+/**
+ *  DRC Compressor handle.
+ */
+typedef struct DRC_COMP  DRC_COMP, *HDRC_COMP;
+
+/**
+ * \brief  Open a DRC Compressor instance.
+ *
+ * Allocate memory for a compressor instance.
+ *
+ * \param phDrcComp             A pointer to a compressor handle. Initialized on return.
+ *
+ * \return
+ *          - 0, on succes.
+ *          - unequal 0, on failure.
+ */
+INT FDK_DRC_Generator_Open(
+        HDRC_COMP                      *phDrcComp
+        );
+
+
+/**
+ * \brief  Close the DRC Compressor instance.
+ *
+ * Deallocate instance and free whole memory.
+ *
+ * \param phDrcComp             Pointer to the compressor handle to be deallocated.
+ *
+ * \return
+ *          - 0, on succes.
+ *          - unequal 0, on failure.
+ */
+INT FDK_DRC_Generator_Close(
+        HDRC_COMP                      *phDrcComp
+        );
+
+/**
+ * \brief  Configure DRC Compressor.
+ *
+ * \param drcComp               Compressor handle.
+ * \param profileLine           DRC profile for line mode.
+ * \param profileRF             DRC profile for RF mode.
+ * \param blockLength           Length of processing block in samples per channel.
+ * \param sampleRate            Sampling rate in Hz.
+ * \param channelMode           Channel configuration.
+ * \param channelOrder          Channel order, MPEG or WAV.
+ * \param useWeighting          Use weighting filter for loudness calculation
+ *
+ * \return
+ *          - 0, on success,
+ *          - unequal 0, on failure
+ */
+INT FDK_DRC_Generator_Initialize(
+        HDRC_COMP                       drcComp,
+        const DRC_PROFILE               profileLine,
+        const DRC_PROFILE               profileRF,
+        const INT                       blockLength,
+        const UINT                      sampleRate,
+        const CHANNEL_MODE              channelMode,
+        const CHANNEL_ORDER             channelOrder,
+        const UCHAR                     useWeighting
+        );
+
+/**
+ * \brief  Calculate DRC Compressor Gain.
+ *
+ * \param drcComp               Compressor handle.
+ * \param inSamples             Pointer to interleaved input audio samples.
+ * \param dialnorm              Dialog Level in dB (typically -31...-1).
+ * \param drc_TargetRefLevel
+ * \param comp_TargetRefLevel
+ * \param clev                  Downmix center mix factor (typically 0.707, 0.595 or 0.5)
+ * \param slev                  Downmix surround mix factor (typically 0.707, 0.5, or 0)
+ * \param dynrng                Pointer to variable receiving line mode DRC gain in dB
+ * \param compr                 Pointer to variable receiving RF mode DRC gain in dB
+ *
+ * \return
+ *          - 0, on success,
+ *          - unequal 0, on failure
+ */
+INT FDK_DRC_Generator_Calc(
+        HDRC_COMP                       drcComp,
+        const INT_PCM * const           inSamples,
+        const INT                       dialnorm,
+        const INT                       drc_TargetRefLevel,
+        const INT                       comp_TargetRefLevel,
+        FIXP_DBL                        clev,
+        FIXP_DBL                        slev,
+        INT * const                     dynrng,
+        INT * const                     compr
+        );
+
+
+/**
+ * \brief  Configure DRC Compressor Profile.
+ *
+ * \param drcComp               Compressor handle.
+ * \param profileLine           DRC profile for line mode.
+ * \param profileRF             DRC profile for RF mode.
+ *
+ * \return
+ *          - 0, on success,
+ *          - unequal 0, on failure
+ */
+INT FDK_DRC_Generator_setDrcProfile(
+        HDRC_COMP                       drcComp,
+        const DRC_PROFILE               profileLine,
+        const DRC_PROFILE               profileRF
+        );
+
+
+/**
+ * \brief  Get DRC profile for line mode.
+ *
+ * \param drcComp               Compressor handle.
+ *
+ * \return  Current Profile.
+ */
+DRC_PROFILE FDK_DRC_Generator_getDrcProfile(
+        const HDRC_COMP                 drcComp
+        );
+
+
+/**
+ * \brief  Get DRC profile for RF mode.
+ *
+ * \param drcComp               Compressor handle.
+ *
+ * \return  Current Profile.
+ */
+DRC_PROFILE FDK_DRC_Generator_getCompProfile(
+        const HDRC_COMP                 drcComp
+        );
+
+
+#endif /* _METADATA_COMPRESSOR_H */
+