- add FIX_REND_ROUNDING to round like mvr2s() instead of using roundf (9036f393) · Commits · IVAS Codec Public Collaboration / IVAS Codec

apps/renderer.c

+17 −0

Original line number	Diff line number	Diff line
		@@ -2461,6 +2461,9 @@ static void convertOutputBuffer(
		int16_t *intBuffer )
		{
		int16_t chnl, smpl, i;
		#ifdef FIX_REND_ROUNDING
		float temp;
		#endif

		i = 0;

		@@ -2468,7 +2471,21 @@ static void convertOutputBuffer(
		{
		for ( chnl = 0; chnl < numChannels; ++chnl )
		{
		#ifdef FIX_REND_ROUNDING
		temp = floatBuffer[chnl * numSamplesPerChannel + smpl];
		temp = (float) floor( temp + 0.5f );
		if ( temp > MAX16B_FLT )
		{
		temp = MAX16B_FLT;
		}
		else if ( temp < MIN16B_FLT )
		{
		temp = MIN16B_FLT;
		}
		intBuffer[i] = (int16_t) temp;
		#else
		intBuffer[i] = (int16_t) roundf( floatBuffer[chnl * numSamplesPerChannel + smpl] );
		#endif

		++i;
		}

lib_com/options.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -175,6 +175,8 @@
		#define FIX_GET_DELAY_RETURN /* Issue 223: change return data type in function get_delay() */
		#define NTT_REDUC_COMP_POC /* NTT Contribution 10: Complexity reduction of phase spectrum in stereo downmix*/
		#define FIX_ISM_DECODER_PRINTOUT /* Issue 229: fix ISM decoder printout */
		#define FIX_REND_ROUNDING /* Issue 195: Align float to int16 conversion in renderer with decoder */
		#define FIX_REND_MONO_DMX /* Issue 195: Fix mono downmix coefficients in decoder and renderer */


		/* ################## End DEVELOPMENT switches ######################### */

lib_rend/ivas_rom_rend.c

+15 −0

Original line number	Diff line number	Diff line
		@@ -362,6 +362,20 @@ const uint32_t ls_LFE_last_idx_CICP19[12] = { 0, 1, 2, 4, 5, 6, 7, 8, 9, 10, 11,
		const float ls_conversion_cicpX_mono[12][1] =
		{
		#ifdef EXT_RENDERER
		#ifdef FIX_REND_MONO_DMX
		{1.00000000f},
		{1.00000000f},
		{1.00000000f},
		{1.00000000f},
		{0.79999995f},
		{0.79999995f},
		{0.79999995f},
		{0.79999995f},
		{0.849999964f},
		{0.849999964f},
		{0.849999964f},
		{0.849999964f}
		#else /* FIX_REND_MONO_DMX */
		{1.00000000f},
		{1.00000000f},
		{1.00000000f},
		@@ -374,6 +388,7 @@ const float ls_conversion_cicpX_mono[12][1] =
		{1.00000000f},
		{1.00000000f},
		{1.00000000f},
		#endif /* FIX_REND_MONO_DMX */
		#else
		{1.00000000f},
		{1.00000000f},

lib_rend/lib_rend.c

+44 −7

Original line number	Diff line number	Diff line
		@@ -1203,6 +1203,11 @@ static ivas_error initMcPanGainsWithMonoOut(
		{
		int16_t i;
		int16_t numInChannels;
		#ifdef FIX_REND_MONO_DMX
		int16_t readIdx;
		int16_t writeIdx;
		bool skipSideSpeakers;
		#endif
		ivas_error error;

		if ( ( error = getRendInputNumChannels( inputMc, &numInChannels ) ) != IVAS_ERR_OK )
		@@ -1210,12 +1215,44 @@ static ivas_error initMcPanGainsWithMonoOut(
		return error;
		}

		#ifdef FIX_REND_MONO_DMX
		if ( inputMc->base.inConfig == IVAS_REND_AUDIO_CONFIG_LS_CUSTOM )
		{
		for ( i = 0; i < numInChannels; ++i )
		{
		/* It's OK to also set gain 1 for LFE input channels here.
		* Correct LFE handling will be applied within updateMcPanGains() */
		inputMc->panGains[i][0] = 1.f;
		}
		}
		else
		{
		/* ls_conversion_cicpX_stereo contains gains for side speakers.
		* These should be skipped with 5.1+X inputs. */
		skipSideSpeakers = false;
		if ( inputMc->base.inConfig == IVAS_REND_AUDIO_CONFIG_5_1_2 \|\| inputMc->base.inConfig == IVAS_REND_AUDIO_CONFIG_5_1_4 )
		{
		skipSideSpeakers = true;
		}
		for ( readIdx = 0, writeIdx = 0; writeIdx < numInChannels; ++readIdx, ++writeIdx )
		{
		if ( skipSideSpeakers && readIdx == 4 )
		{
		/* Skip gains for side speakers in lookup table */
		readIdx += 2;
		}

		inputMc->panGains[writeIdx][0] = ls_conversion_cicpX_mono[readIdx][0];
		}
		}
		#else
		for ( i = 0; i < numInChannels; ++i )
		{
		/* It's OK to also set gain 1 for LFE input channels here.
		* Correct LFE handling will be applied within updateMcPanGains() */
		inputMc->panGains[i][0] = 1.f;
		}
		#endif

		return IVAS_ERR_OK;
		}
		@@ -1323,13 +1360,13 @@ static ivas_error updateMcPanGainsForMcOut(
		/* "if" conditions below realize the following mapping:

		If in == out, use identity matrix, otherwise follow the table:
		+-----------+----------+---------------+-----------+--------------------+
		+-----------+-------------+---------------+-----------+--------------------+
		\| in\out \| MONO \| STEREO \| custom LS \| other \|
		+-----------+----------+---------------+-----------+--------------------+
		+-----------+-------------+---------------+-----------+--------------------+
		\| MONO \| mono out \| EFAP \| EFAP \| EFAP \|
		\| custom LS \| mono out \| EFAP \| EFAP \| EFAP \|
		\| other \| mono out \| stereo lookup \| EFAP \| conversion mapping \|
		+-----------+----------+---------------+-----------+--------------------+
		\| other \| mono lookup \| stereo lookup \| EFAP \| conversion mapping \|
		+-----------+-------------+---------------+-----------+--------------------+
		*/

		if ( configsAreEqual( inputMc->base.inConfig, inputMc->customLsInput, outConfig, *inputMc->base.ctx.pCustomLsOut ) )

scripts/pyaudio3dtools/constants.py

+8 −8

Original line number	Diff line number	Diff line
		@@ -37,14 +37,14 @@ IVAS_CICPX_TO_MONO = np.array(
		1,
		1,
		1,
		1,
		1,
		1,
		1,
		1,
		1,
		1,
		1,
		0.79999995,
		0.79999995,
		0.79999995,
		0.79999995,
		0.849999964,
		0.849999964,
		0.849999964,
		0.849999964,
		]
		]
		).T

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