modules: Add iir_mbdrc module and drc module

CMakeLists.txt

@@ -81,6 +81,9 @@ modules/audio/pcm_decoder/api
 modules/audio/pcm_encoder/api
 modules/cmn/pcm_mf_cnv/capi/mfc/api
 modules/cmn/pcm_mf_cnv/capi/pcm_cnv/api
+modules/processing/gain_control/drc/api
+modules/processing/gain_control/iir_mbdrc/api
+modules/cmn/api
 )
 ###
 ###   Some strings used for picking inc paths based on arch, tgt/sim & static/shared.

arch/linux/configs/defconfig

@@ -18,6 +18,8 @@ CONFIG_PCM_CNV=y
 CONFIG_MFC=y
 CONFIG_PCM_DECODER=y
 CONFIG_PCM_ENCODER=y
+CONFIG_DRC=y
+CONFIG_IIR_MBDRC=y
 
 #
 # Signal Processing Framework

modules/CMakeLists.txt

@@ -34,3 +34,10 @@ endif()
 if(CONFIG_PCM_CNV)
     add_subdirectory(cmn/pcm_mf_cnv/build)
 endif()
+if(CONFIG_DRC)
+    add_subdirectory(processing/gain_control/drc/build)
+endif()
+if(CONFIG_IIR_MBDRC)
+    add_subdirectory(processing/gain_control/limiter/build)
+    add_subdirectory(processing/gain_control/iir_mbdrc/build)
+endif()

modules/Kconfig

@@ -35,4 +35,13 @@ config PCM_CNV
         select CH_MIXER
         select MSIIR
         default y
+
+config DRC
+        tristate "Enable DRC Library"
+        default y
+
+config IIR_MBDRC
+        tristate "Enable IIR_MBDRC Library"
+        select DRC
+        default y
 endmenu

modules/cmn/common/internal_api/imcl_drc_info_api.h

@@ -0,0 +1,72 @@
+#ifndef IMCL_DRC_INFO_API_H
+#define IMCL_DRC_INFO_API_H
+
+/**
+  @file imcl_drc_info_api.h
+
+  @brief defines the Intent ID for communicating DRC parameters
+  over Inter-Module Control Links (IMCL).
+
+*/
+
+/*==========================================================================
+ * Copyright (c) Qualcomm Innovation Center, Inc. All Rights Reserved.
+ * SPDX-License-Identifier: BSD-3-Clause-Clear
+ * =========================================================================*/
+
+#define INTENT_ID_DRC_CONFIG 0x080010F3
+#ifdef INTENT_ID_DRC_CONFIG
+
+#ifdef __cplusplus
+extern "C" {
+#endif /*__cplusplus*/
+
+
+/*==============================================================================
+  Intent ID - INTENT_ID_DRC_CONFIG
+==============================================================================*/
+/**<
+Intent ID to send DRC parameters over control link.
+
+e.g.
+Control link between Rx DRC and Tx AVC modules in voice path.
+*/
+
+/* ============================================================================
+   Param ID
+==============================================================================*/
+
+#define PARAM_ID_IMCL_DRC_DOWN_COMP_THRESHOLD 	0x080010F4
+
+/*==============================================================================
+   Param structure defintions
+==============================================================================*/
+
+/* Structure definition for Parameter */
+typedef struct param_id_imcl_drc_down_comp_threshold_t param_id_imcl_drc_down_comp_threshold_t;
+
+/** @h2xmlp_parameter   {"PARAM_ID_IMCL_DRC_DOWN_COMP_THRESHOLD",
+                         PARAM_ID_IMCL_DRC_DOWN_COMP_THRESHOLD}
+    @h2xmlp_description {This parameter is used to send the drc down
+                   	   	 compression threshold over the control link.}
+    @h2xmlp_toolPolicy  {NO_SUPPORT} */
+
+#include "spf_begin_pack.h"
+struct param_id_imcl_drc_down_comp_threshold_t
+{
+   int16_t drc_rx_enable;
+   /**< @h2xmle_description {Specifies whether DRC module is enabled.} */
+
+   int16_t down_comp_threshold_L16Q7;
+   /**< @h2xmle_description {DRC down-compression ratio in Q7 format.} */
+}
+#include "spf_end_pack.h"
+;
+
+#ifdef __cplusplus
+}
+#endif /*__cplusplus*/
+
+#endif // INTENT_ID_DRC_CONFIG
+
+#endif /* IMCL_DRC_INFO_API_H */

modules/cmn/common/utils/build/CMakeLists.txt

@@ -36,6 +36,7 @@ set (lib_srcs_list
      ${LIB_ROOT}/src/util.c
      ${LIB_ROOT}/src/audio_delay32.c
      ${LIB_ROOT}/src/clips.c
+     ${LIB_ROOT}/src/apiir_df1_opt.c
     )
 
 #Call spf_build_static_library to generate the static library

modules/cmn/common/utils/inc/audio_apiir_df1_opt.h

@@ -0,0 +1,73 @@
+/*
+ * Copyright (c) Qualcomm Innovation Center, Inc. All Rights Reserved.
+ * SPDX-License-Identifier: BSD-3-Clause-Clear
+ */
+
+#ifndef _AUDIO_IIRDF1_H_
+
+#define _AUDIO_IIRDF1_H_
+
+
+
+#include "ar_defs.h"
+
+
+
+/*=============================================================================
+
+      Function Declarations 
+
+=============================================================================*/
+
+
+
+#ifdef __cplusplus
+
+extern "C" {
+
+#endif /* __cplusplus */
+
+
+
+/* To use the following function, it should be ensured that the Q-factor of den and */
+
+/* num coefs should be <= Q27, in order to avoid overflow                           */
+
+/* The suggested Q-factors are:                                                     */
+
+/* Q1.27, Q2.26, Q3.25, Q4.24...                                                    */
+
+
+
+/* This is the df1 allpass biquad iir function										*/
+
+/* Only b0 and b1 is needed, using transfer function:								*/
+
+/* H_ap(z) = (b0 + b1*z^-1 + z^-2)/(1 + b1*z^-1 + b0*z^-2)							*/
+
+void iirDF1_32_ap(int32_t *inp,
+
+	int32_t *out,
+
+	int32_t samples,
+
+	int32_t *numcoefs,
+
+	int32_t *mem,
+
+	int16_t qfactor);
+
+
+
+
+
+#ifdef __cplusplus
+
+}
+
+#endif /* __cplusplus */
+
+
+
+#endif  /* _AUDIO_IIRDF1_H_ */
+