add device specific voice processing descriptors

Add the possibility to define device specific effect descriptors
in libqcomvoiceprocessingdescriptors.so. This will allow
exposing different implementation UUISs according to device tuning
so that applications can distinguish one from the other.

Bug: 9126576.

Change-Id: I8e6ca00cbc6386498a5df99b514b1c7b7b1fd82c

1 files changed, 42 insertions, 10 deletions

diff --git a/voice_processing/voice_processing.c b/voice_processing/voice_processing.c
index f4120909..b8b1e1b0 100644
--- a/voice_processing/voice_processing.c
+++ b/voice_processing/voice_processing.c
@@ -16,6 +16,7 @@
 
 #define LOG_TAG "voice_processing"
 /*#define LOG_NDEBUG 0*/
+#include <dlfcn.h>
 #include <cutils/log.h>
 #include <cutils/list.h>
 #include <hardware/audio_effect.h>
@@ -28,6 +29,8 @@
 // local definitions
 //------------------------------------------------------------------------------
 
+#define EFFECTS_DESCRIPTOR_LIBRARY_PATH "/system/lib/soundfx/libqcomvoiceprocessingdescriptors.so"
+
 // types of pre processing modules
 enum effect_id
 {
@@ -74,14 +77,15 @@ struct session_s {
 
 
 //------------------------------------------------------------------------------
-// Effect descriptors
+// Default Effect descriptors. Device specific descriptors should be defined in
+// libqcomvoiceprocessing.<product_name>.so if needed.
 //------------------------------------------------------------------------------
 
 // UUIDs for effect types have been generated from http://www.itu.int/ITU-T/asn1/uuid.html
 // as the pre processing effects are not defined by OpenSL ES
 
 // Acoustic Echo Cancellation
-static const effect_descriptor_t aec_descriptor = {
+static const effect_descriptor_t qcom_default_aec_descriptor = {
         { 0x7b491460, 0x8d4d, 0x11e0, 0xbd61, { 0x00, 0x02, 0xa5, 0xd5, 0xc5, 0x1b } }, // type
         { 0x0f8d0d2a, 0x59e5, 0x45fe, 0xb6e4, { 0x24, 0x8c, 0x8a, 0x79, 0x91, 0x09 } }, // uuid
         EFFECT_CONTROL_API_VERSION,
@@ -93,7 +97,7 @@ static const effect_descriptor_t aec_descriptor = {
 };
 
 // Noise suppression
-static const effect_descriptor_t ns_descriptor = {
+static const effect_descriptor_t qcom_default_ns_descriptor = {
         { 0x58b4b260, 0x8e06, 0x11e0, 0xaa8e, { 0x00, 0x02, 0xa5, 0xd5, 0xc5, 0x1b } }, // type
         { 0x1d97bb0b, 0x9e2f, 0x4403, 0x9ae3, { 0x58, 0xc2, 0x55, 0x43, 0x06, 0xf8 } }, // uuid
         EFFECT_CONTROL_API_VERSION,
@@ -106,7 +110,7 @@ static const effect_descriptor_t ns_descriptor = {
 
 //ENABLE_AGC
 // Automatic Gain Control
-//static const effect_descriptor_t agc_descriptor = {
+//static const effect_descriptor_t qcom_default_agc_descriptor = {
 //        { 0x0a8abfe0, 0x654c, 0x11e0, 0xba26, { 0x00, 0x02, 0xa5, 0xd5, 0xc5, 0x1b } }, // type
 //        { 0x0dd49521, 0x8c59, 0x40b1, 0xb403, { 0xe0, 0x8d, 0x5f, 0x01, 0x87, 0x5e } }, // uuid
 //        EFFECT_CONTROL_API_VERSION,
@@ -117,10 +121,10 @@ static const effect_descriptor_t ns_descriptor = {
 //        "Qualcomm Fluence"
 //};
 
-static const effect_descriptor_t *descriptors[NUM_ID] = {
-        &aec_descriptor,
-        &ns_descriptor,
-//ENABLE_AGC       &agc_descriptor,
+const effect_descriptor_t *descriptors[NUM_ID] = {
+        &qcom_default_aec_descriptor,
+        &qcom_default_ns_descriptor,
+//ENABLE_AGC       &qcom_default_agc_descriptor,
 };
 
 
@@ -415,14 +419,39 @@ static struct session_s *get_session(int32_t id, int32_t  sessionId, int32_t  io
 }
 
 static int init() {
-    size_t i;
-    int status = 0;
+    void *lib_handle;
+    const effect_descriptor_t *desc;
 
     if (init_status <= 0)
         return init_status;
 
+    if (access(EFFECTS_DESCRIPTOR_LIBRARY_PATH, R_OK) == 0) {
+        lib_handle = dlopen(EFFECTS_DESCRIPTOR_LIBRARY_PATH, RTLD_NOW);
+        if (lib_handle == NULL) {
+            ALOGE("%s: DLOPEN failed for %s", __func__, EFFECTS_DESCRIPTOR_LIBRARY_PATH);
+        } else {
+            ALOGV("%s: DLOPEN successful for %s", __func__, EFFECTS_DESCRIPTOR_LIBRARY_PATH);
+            desc = (const effect_descriptor_t *)dlsym(lib_handle,
+                                                        "qcom_product_aec_descriptor");
+            if (desc)
+                descriptors[AEC_ID] = desc;
+
+            desc = (const effect_descriptor_t *)dlsym(lib_handle,
+                                                        "qcom_product_ns_descriptor");
+            if (desc)
+                descriptors[NS_ID] = desc;
+
+//ENABLE_AGC
+//            desc = (const effect_descriptor_t *)dlsym(lib_handle,
+//                                                        "qcom_product_agc_descriptor");
+//            if (desc)
+//                descriptors[AGC_ID] = desc;
+        }
+    }
+
     uuid_to_id_table[AEC_ID] = FX_IID_AEC;
     uuid_to_id_table[NS_ID] = FX_IID_NS;
+//ENABLE_AGC uuid_to_id_table[AGC_ID] = FX_IID_AGC;
 
     list_init(&session_list);
 
@@ -700,6 +729,9 @@ static int lib_get_descriptor(const effect_uuid_t *uuid,
     if (pDescriptor == NULL || uuid == NULL)
         return -EINVAL;
 
+    if (init() != 0)
+        return init_status;
+
     desc = get_descriptor(uuid);
     if (desc == NULL) {
         ALOGV("lib_get_descriptor() not found");