Merge branch '244-problems-with-angle-wrapping' into 'main' (6e149fcf) · Commits · IVAS Codec Public Collaboration / IVAS Codec

lib_com/ivas_tools.c

+88 −0

Original line number	Diff line number	Diff line
		@@ -1007,6 +1007,26 @@ void lls_interp_n(
		return;
		}

		#ifdef FIX_ANGLE_WRAPPING
		/* helper function for panning_wrap_angles */
		static float wrap_azi(
		const float azi_deg )
		{
		float azi = azi_deg;

		/* Wrap azimuth value */
		while ( azi > 180 )
		{
		azi -= 360.0f;
		}

		while ( azi <= -180 )
		{
		azi += 360;
		}

		return azi;
		}

		/-------------------------------------------------------------------
		* panning_wrap_angles()
		@@ -1016,7 +1036,74 @@ void lls_interp_n(
		* elevation = [-90, 90]
		* Considers direction changes from large elevation values
		-------------------------------------------------------------------/
		void panning_wrap_angles(
		const float azi_deg, /* i : azimuth in degrees for panning direction (positive left) */
		const float ele_deg, /* i : elevation in degrees for panning direction (positive up) */
		float azi_wrapped, / o : wrapped azimuth component */
		float ele_wrapped / o : wrapped elevation component */
		)
		{
		float azi, ele;

		azi = azi_deg;
		ele = ele_deg;

		if ( fabsf( ele ) < 90 )
		{
		*ele_wrapped = ele;
		*azi_wrapped = wrap_azi( azi );
		return;
		}
		else
		{
		/* Special case when elevation is a multiple of 90; azimuth is irrelevant */
		if ( ( fmodf( ele, 90 ) == 0 ) && ( fmodf( ele, 180 ) != 0 ) )
		{
		*azi_wrapped = 0;
		while ( ele > 90 )
		{
		ele -= 360;
		}
		while ( ele < -90 )
		{
		ele += 360;
		}
		*ele_wrapped = ele;
		}
		else
		{
		/* Wrap elevation and adjust azimuth accordingly */
		while ( fabsf( ele ) > 90 )
		{
		/* Flip to other hemisphere */
		azi += 180;

		/* Compensate elevation accordingly */
		if ( ele > 90 )
		{
		ele = 180 - ele;
		}
		else if ( ele < -90 )
		{
		ele = -180 - ele;
		}
		}
		*azi_wrapped = wrap_azi( azi );
		*ele_wrapped = ele;
		}

		return;
		}
		}
		#else
		/-------------------------------------------------------------------
		* panning_wrap_angles()
		*
		* Wrap angles for amplitude panning to the range:
		* azimuth = (-180, 180]
		* elevation = [-90, 90]
		* Considers direction changes from large elevation values
		-------------------------------------------------------------------/
		void panning_wrap_angles(
		const float azi_deg, /* i : azimuth in degrees for panning direction (positive left) */
		const float ele_deg, /* i : elevation in degrees for panning direction (positive up) */
		@@ -1080,6 +1167,7 @@ void panning_wrap_angles(

		return;
		}
		#endif

		/-------------------------------------------------------------------------
		* v_sort_ind()

lib_com/options.h

100755 → 100644

+1 −1

Original line number	Diff line number	Diff line
		@@ -149,7 +149,7 @@
		#define MC_BITRATE_SWITCHING /* Issue 116: support bitrate switching in MC format */
		#define MC_JBM /* FhG: extend JBM beyond mono for running IVAS in VoIP mode (contribution 19) */
		#define FIX_265_MC_BRATE_SWITCHING /* Issue 265: fix use-of-uninitialized-value in MC bitrate switching */

		#define FIX_ANGLE_WRAPPING /* Issue 244: Problems with angle wrapping*/

		/* ################## End DEVELOPMENT switches ######################### */
		/* clang-format on */

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