Merge GStreamer into next

1 files changed, 191 insertions, 0 deletions

diff --git a/fdk-aac/libAACenc/src/chaosmeasure.cpp b/fdk-aac/libAACenc/src/chaosmeasure.cpp
new file mode 100644
index 0000000..664284b
--- /dev/null
+++ b/fdk-aac/libAACenc/src/chaosmeasure.cpp
@@ -0,0 +1,191 @@
+/* -----------------------------------------------------------------------------
+Software License for The Fraunhofer FDK AAC Codec Library for Android
+
+© Copyright  1995 - 2018 Fraunhofer-Gesellschaft zur Förderung der angewandten
+Forschung e.V. All rights reserved.
+
+ 1.    INTRODUCTION
+The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software
+that implements the MPEG Advanced Audio Coding ("AAC") encoding and decoding
+scheme for digital audio. This FDK AAC Codec software is intended to be used on
+a wide variety of Android devices.
+
+AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient
+general perceptual audio codecs. AAC-ELD is considered the best-performing
+full-bandwidth communications codec by independent studies and is widely
+deployed. AAC has been standardized by ISO and IEC as part of the MPEG
+specifications.
+
+Patent licenses for necessary patent claims for the FDK AAC Codec (including
+those of Fraunhofer) may be obtained through Via Licensing
+(www.vialicensing.com) or through the respective patent owners individually for
+the purpose of encoding or decoding bit streams in products that are compliant
+with the ISO/IEC MPEG audio standards. Please note that most manufacturers of
+Android devices already license these patent claims through Via Licensing or
+directly from the patent owners, and therefore FDK AAC Codec software may
+already be covered under those patent licenses when it is used for those
+licensed purposes only.
+
+Commercially-licensed AAC software libraries, including floating-point versions
+with enhanced sound quality, are also available from Fraunhofer. Users are
+encouraged to check the Fraunhofer website for additional applications
+information and documentation.
+
+2.    COPYRIGHT LICENSE
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted without payment of copyright license fees provided that you
+satisfy the following conditions:
+
+You must retain the complete text of this software license in redistributions of
+the FDK AAC Codec or your modifications thereto in source code form.
+
+You must retain the complete text of this software license in the documentation
+and/or other materials provided with redistributions of the FDK AAC Codec or
+your modifications thereto in binary form. You must make available free of
+charge copies of the complete source code of the FDK AAC Codec and your
+modifications thereto to recipients of copies in binary form.
+
+The name of Fraunhofer may not be used to endorse or promote products derived
+from this library without prior written permission.
+
+You may not charge copyright license fees for anyone to use, copy or distribute
+the FDK AAC Codec software or your modifications thereto.
+
+Your modified versions of the FDK AAC Codec must carry prominent notices stating
+that you changed the software and the date of any change. For modified versions
+of the FDK AAC Codec, the term "Fraunhofer FDK AAC Codec Library for Android"
+must be replaced by the term "Third-Party Modified Version of the Fraunhofer FDK
+AAC Codec Library for Android."
+
+3.    NO PATENT LICENSE
+
+NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without
+limitation the patents of Fraunhofer, ARE GRANTED BY THIS SOFTWARE LICENSE.
+Fraunhofer provides no warranty of patent non-infringement with respect to this
+software.
+
+You may use this FDK AAC Codec software or modifications thereto only for
+purposes that are authorized by appropriate patent licenses.
+
+4.    DISCLAIMER
+
+This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright
+holders and contributors "AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES,
+including but not limited to the implied warranties of merchantability and
+fitness for a particular purpose. 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), arising in any way out of the use of
+this software, even if advised of the possibility of such damage.
+
+5.    CONTACT INFORMATION
+
+Fraunhofer Institute for Integrated Circuits IIS
+Attention: Audio and Multimedia Departments - FDK AAC LL
+Am Wolfsmantel 33
+91058 Erlangen, Germany
+
+www.iis.fraunhofer.de/amm
+amm-info@iis.fraunhofer.de
+----------------------------------------------------------------------------- */
+
+/**************************** AAC encoder library ******************************
+
+   Author(s):   M. Werner
+
+   Description: Chaos measure calculation
+
+*******************************************************************************/
+
+#include "chaosmeasure.h"
+
+/*****************************************************************************
+    functionname: FDKaacEnc_FDKaacEnc_CalculateChaosMeasurePeakFast
+    description:  Eberlein method of chaos measure calculation by high-pass
+                  filtering amplitude spectrum
+                  A special case of FDKaacEnc_CalculateChaosMeasureTonalGeneric
+-- highly optimized
+*****************************************************************************/
+static void FDKaacEnc_FDKaacEnc_CalculateChaosMeasurePeakFast(
+    FIXP_DBL *RESTRICT paMDCTDataNM0, INT numberOfLines,
+    FIXP_DBL *RESTRICT chaosMeasure) {
+  INT i, j;
+
+  /* calculate chaos measure by "peak filter" */
+  /* make even and odd pass through data */
+  FIXP_DBL left_0_div2,
+      center_0; /* left, center tap of filter, even numbered */
+  FIXP_DBL left_1_div2, center_1; /* left, center tap of filter, odd numbered */
+
+  left_0_div2 = (FIXP_DBL)(((LONG)paMDCTDataNM0[0] ^
+                            ((LONG)paMDCTDataNM0[0] >> (DFRACT_BITS - 1))) >>
+                           1);
+  left_1_div2 = (FIXP_DBL)(((LONG)paMDCTDataNM0[1] ^
+                            ((LONG)paMDCTDataNM0[1] >> (DFRACT_BITS - 1))) >>
+                           1);
+  center_0 = (FIXP_DBL)((LONG)paMDCTDataNM0[2] ^
+                        ((LONG)paMDCTDataNM0[2] >> (DFRACT_BITS - 1)));
+  center_1 = (FIXP_DBL)((LONG)paMDCTDataNM0[3] ^
+                        ((LONG)paMDCTDataNM0[3] >> (DFRACT_BITS - 1)));
+
+  for (j = 2; j < numberOfLines - 2; j += 2) {
+    FIXP_DBL right_0 =
+        (FIXP_DBL)((LONG)paMDCTDataNM0[j + 2] ^
+                   ((LONG)paMDCTDataNM0[j + 2] >> (DFRACT_BITS - 1)));
+    FIXP_DBL tmp_0 = left_0_div2 + (right_0 >> 1);
+    FIXP_DBL right_1 =
+        (FIXP_DBL)((LONG)paMDCTDataNM0[j + 3] ^
+                   ((LONG)paMDCTDataNM0[j + 3] >> (DFRACT_BITS - 1)));
+    FIXP_DBL tmp_1 = left_1_div2 + (right_1 >> 1);
+
+    if (tmp_0 < center_0) {
+      INT leadingBits = CntLeadingZeros(center_0) - 1;
+      tmp_0 = schur_div(tmp_0 << leadingBits, center_0 << leadingBits, 8);
+      tmp_0 = fMult(tmp_0, tmp_0);
+    } else {
+      tmp_0 = (FIXP_DBL)MAXVAL_DBL;
+    }
+    chaosMeasure[j + 0] = tmp_0;
+    left_0_div2 = center_0 >> 1;
+    center_0 = right_0;
+
+    if (tmp_1 < center_1) {
+      INT leadingBits = CntLeadingZeros(center_1) - 1;
+      tmp_1 = schur_div(tmp_1 << leadingBits, center_1 << leadingBits, 8);
+      tmp_1 = fMult(tmp_1, tmp_1);
+    } else {
+      tmp_1 = (FIXP_DBL)MAXVAL_DBL;
+    }
+
+    left_1_div2 = center_1 >> 1;
+    center_1 = right_1;
+    chaosMeasure[j + 1] = tmp_1;
+  }
+
+  /* provide chaos measure for first few lines */
+  chaosMeasure[0] = chaosMeasure[2];
+  chaosMeasure[1] = chaosMeasure[2];
+
+  /* provide chaos measure for last few lines */
+  for (i = (numberOfLines - 3); i < numberOfLines; i++)
+    chaosMeasure[i] = FL2FXCONST_DBL(0.5);
+}
+
+/*****************************************************************************
+    functionname: FDKaacEnc_CalculateChaosMeasure
+    description:  calculates a chaosmeasure for every line, different methods
+                  are available. 0 means tonal, 1 means noiselike
+    returns:
+    input:        MDCT data, number of lines
+    output:       chaosMeasure
+*****************************************************************************/
+void FDKaacEnc_CalculateChaosMeasure(FIXP_DBL *paMDCTDataNM0, INT numberOfLines,
+                                     FIXP_DBL *chaosMeasure)
+
+{
+  FDKaacEnc_FDKaacEnc_CalculateChaosMeasurePeakFast(
+      paMDCTDataNM0, numberOfLines, chaosMeasure);
+}