update fix 1074 (f97c59c7) · Commits · IVAS Codec Public Collaboration / IVAS Codec

lib_dec/ivas_init_dec.c

+4 −1

Original line number	Diff line number	Diff line
		@@ -362,8 +362,11 @@ ivas_error ivas_dec_setup(
		}

		/* this should be non-zero if original input format was MASA_ISM_FORMAT */
		#ifdef NONBE_FIX_1074_NOBJ_SIGNAL_OMASA_LBR
		st_ivas->nchan_ism = 2 * st_ivas->bit_stream[( ivas_total_brate / FRAMES_PER_SEC ) - 3] + st_ivas->bit_stream[( ivas_total_brate / FRAMES_PER_SEC ) - 2];
		#else
		st_ivas->nchan_ism = st_ivas->bit_stream[( ivas_total_brate / FRAMES_PER_SEC ) - 3] + 2 * st_ivas->bit_stream[( ivas_total_brate / FRAMES_PER_SEC ) - 2];

		#endif
		if ( st_ivas->nchan_ism > 0 )
		{
		#ifdef NONBE_FIX_1074_NOBJ_SIGNAL_OMASA_LBR

lib_dec/ivas_masa_dec.c

+107 −85

Original line number	Diff line number	Diff line
		@@ -151,6 +151,33 @@ ivas_error ivas_masa_decode(
		{
		if ( !( ivas_format == MC_FORMAT && st_ivas->mc_mode == MC_MODE_MCMASA ) )
		{
		#ifdef NONBE_FIX_1074_NOBJ_SIGNAL_OMASA_LBR
		if ( ivas_format == MASA_FORMAT && st_ivas->nchan_ism > 0 )
		{
		/* there was OMASA in the input */
		hMasa->config.input_ivas_format = MASA_ISM_FORMAT;
		if ( st_ivas->nchan_ism < 3 )
		{
		/* was read in ivas_init_dec() to distinguish between 1 and 2 objects */
		st->next_bit_pos -= MASA_TRANSP_BITS;
		*nb_bits_read += MASA_TRANSP_BITS;
		}
		else
		{
		/* if there are 3 or 4 objects the number of transport channels bit is given to MASA format*/
		/* read number of directions */
		byteBuffer = st->bit_stream[( st->next_bit_pos )--];
		( *nb_bits_read )++;
		hMasa->config.numberOfDirections = (uint8_t) ( byteBuffer + 1 );
		}
		/* the two reserved bits were already read in ivas_init_dec()*/
		byteBuffer = st->bit_stream[( st->next_bit_pos )--];
		byteBuffer = st->bit_stream[( st->next_bit_pos )--];
		*nb_bits_read += MASA_HEADER_BITS;
		}
		else
		{
		#endif
		if ( ivas_format != MASA_ISM_FORMAT )
		{
		/* number of transport channels is always 2 for MASA_ISM format */
		@@ -249,15 +276,7 @@ ivas_error ivas_masa_decode(
		}
		}

		#ifdef NONBE_FIX_1074_NOBJ_SIGNAL_OMASA_LBR
		/* read 2 bits:
		'00' - MASA format at the encoder
		'01' - MASA_ISM_FORMAT at the encoder, with 4 object
		'10' - MASA_ISM_FORMAT at the encoder, with 3 objects
		'11' - MASA_ISM_FORMAT at the encoder, with 1 or 2 objects
		reading if 3 or 4 object is performed later
		*/
		#else
		#ifndef NONBE_FIX_1074_NOBJ_SIGNAL_OMASA_LBR
		/* read 2 bits:
		'00' - MASA format at the encoder
		'01' - MASA_ISM_FORMAT at the encoder, with 1 object
		@@ -283,6 +302,9 @@ ivas_error ivas_masa_decode(
		byteBuffer = st->bit_stream[( st->next_bit_pos )--];
		( *nb_bits_read )++;
		hMasa->config.numberOfDirections = (uint8_t) ( byteBuffer + 1 );
		#ifdef NONBE_FIX_1074_NOBJ_SIGNAL_OMASA_LBR
		}
		#endif
		}
		else
		{

lib_enc/ivas_masa_enc.c

+15 −4

Original line number	Diff line number	Diff line
		@@ -426,6 +426,11 @@ ivas_error ivas_masa_encode(
		{
		push_next_indice( hMetaData, nchan_ism - 1, MASA_TRANSP_BITS );
		}
		else
		{
		/* for 3 or 4 objects write already the number of MASA directions */
		push_next_indice( hMetaData, hQMetaData->no_directions - 1, MASA_TRANSP_BITS );
		}
		#else
		/* use the MASA number of transport channels bit to signal if there are 3 or 4 objects */
		if ( nchan_ism == 4 )
		@@ -476,10 +481,16 @@ ivas_error ivas_masa_encode(
		push_next_indice( hMetaData, 0, MASA_HEADER_BITS );
		hQMetaData->metadata_max_bits -= MASA_HEADER_BITS;
		}
		#ifdef NONBE_FIX_1074_NOBJ_SIGNAL_OMASA_LBR
		if ( !( ivas_format == MASA_ISM_FORMAT && ism_mode == ISM_MODE_NONE && nchan_ism > 2 ) )
		{
		#endif
		/* write number of directions */
		push_next_indice( hMetaData, hQMetaData->no_directions - 1, 1 );
		hQMetaData->metadata_max_bits -= 1;

		#ifdef NONBE_FIX_1074_NOBJ_SIGNAL_OMASA_LBR
		}
		#endif
		/* write subframe mode */
		push_next_indice( hMetaData, hQMetaData->q_direction[0].cfg.nblocks == 1 ? 1 : 0, MASA_SUBFRAME_BITS );
		hQMetaData->metadata_max_bits -= MASA_SUBFRAME_BITS;