Audio: setParam improve status_t to Result consistency

The rest of the API (*::analyseStatus) returns NOT_SUPPORTED
when the legacy API returns -ENOSYS.

setParameter legacy -> treble shim did not follow this
conversion due to the legacy API stating that for get_paramers,
-ENOSYS should be returned if
"the implementation does not accept a parameter change while the
 output is active but the parameter is acceptable otherwise",
aka INVALID_STATE.

Thus setParameter shim used to return
 - OK for OK
 - INVALID_STATE for -ENOSYS
 - INVALID_ARGUMENTS for everything else

This leads to several problems:
 - an implementation of the legacy API can not report NOT_SUPPORTED
 - is inconsistent with the rest of the status_t conversion methods
 - shim methods implemented over getParameter can not distinguish
   failures error required by the .hal documentation

Most importantly, on the system side, the Result is transformed to a
status_t again but without any special logic for methods wrapping
getParameter in the shim.
See: analyzeResult in
     frameworks/av/media/libaudiohal/2.0/ConversionHelperHidl.cpp
This can not be changed as the system can not know which methods
are implemented with a legacy wrapper under the Treble API boundary.

This mean that if:
 - hal return -ENOSYS ()
 - shim converts it to INVALID_STATE
 - libaudiohal converts it to NOT_ENOUGH_DATA ()
Thus the checkForNewParameter_l's "status == INVALID_OPERATION"
test in frameworks/av/services/audioflinger/Threads.cpp
are now always false and broken.
This has been broken since the introduction of the Treble shim for O.

Thus setParam now converts status_t to Result in the same way
as all the other shim methods.

Bug: 72873273
Bug: 69811500
Bug: 69010523
Test: playback and record for media and voice call
Change-Id: I41204c0807d2bd4675e941771cbc9a43d7d14855
Merged-In: I41328afce56ce31d4a26159ca2d4b16d14cce05b
Signed-off-by: Kevin Rocard <krocard@google.com>

audio/2.0/default/Device.cpp

@@ -48,23 +48,7 @@ Device::~Device() {
 }
 
 Result Device::analyzeStatus(const char* funcName, int status) {
-    if (status != 0) {
-        ALOGW("Device %p %s: %s", mDevice, funcName, strerror(-status));
-    }
-    switch (status) {
-        case 0:
-            return Result::OK;
-        case -EINVAL:
-            return Result::INVALID_ARGUMENTS;
-        case -ENODATA:
-            return Result::INVALID_STATE;
-        case -ENODEV:
-            return Result::NOT_INITIALIZED;
-        case -ENOSYS:
-            return Result::NOT_SUPPORTED;
-        default:
-            return Result::INVALID_STATE;
-    }
+    return util::analyzeStatus("Device", funcName, status);
 }
 
 void Device::closeInputStream(audio_stream_in_t* stream) {

audio/2.0/default/ParametersUtil.cpp

@@ -15,6 +15,7 @@
  */
 
 #include "ParametersUtil.h"
+#include "Util.h"
 
 namespace android {
 namespace hardware {
@@ -141,12 +142,7 @@ Result ParametersUtil::setParametersImpl(
 
 Result ParametersUtil::setParams(const AudioParameter& param) {
     int halStatus = halSetParameters(param.toString().string());
-    if (halStatus == OK)
-        return Result::OK;
-    else if (halStatus == -ENOSYS)
-        return Result::INVALID_STATE;
-    else
-        return Result::INVALID_ARGUMENTS;
+    return util::analyzeStatus(halStatus);
 }
 
 }  // namespace implementation

audio/2.0/default/Stream.cpp

@@ -28,6 +28,7 @@
 #include "Conversions.h"
 #include "EffectMap.h"
 #include "Stream.h"
+#include "Util.h"
 
 namespace android {
 namespace hardware {
@@ -45,29 +46,14 @@ Stream::~Stream() {
 
 // static
 Result Stream::analyzeStatus(const char* funcName, int status) {
-    static const std::vector<int> empty;
-    return analyzeStatus(funcName, status, empty);
+    return util::analyzeStatus("stream", funcName, status);
 }
 
-template <typename T>
-inline bool element_in(T e, const std::vector<T>& v) {
-    return std::find(v.begin(), v.end(), e) != v.end();
-}
 
 // static
 Result Stream::analyzeStatus(const char* funcName, int status,
                              const std::vector<int>& ignoreErrors) {
-    if (status != 0 && (ignoreErrors.empty() || !element_in(-status, ignoreErrors))) {
-        ALOGW("Error from HAL stream in function %s: %s", funcName, strerror(-status));
-    }
-    switch (status) {
-        case 0: return Result::OK;
-        case -EINVAL: return Result::INVALID_ARGUMENTS;
-        case -ENODATA: return Result::INVALID_STATE;
-        case -ENODEV: return Result::NOT_INITIALIZED;
-        case -ENOSYS: return Result::NOT_SUPPORTED;
-        default: return Result::INVALID_STATE;
-    }
+    return util::analyzeStatus("stream", funcName, status, ignoreErrors);
 }
 
 char* Stream::halGetParameters(const char* keys) {

audio/2.0/default/Util.h

@@ -17,6 +17,11 @@
 #ifndef ANDROID_HARDWARE_AUDIO_V2_0_UTIL_H
 #define ANDROID_HARDWARE_AUDIO_V2_0_UTIL_H
 
+#include <algorithm>
+#include <vector>
+
+#include <system/audio.h>
+
 namespace android {
 namespace hardware {
 namespace audio {
@@ -28,6 +33,39 @@ constexpr bool isGainNormalized(float gain) {
     return gain >= 0.0 && gain <= 1.0;
 }
 
+namespace util {
+
+template <typename T>
+inline bool element_in(T e, const std::vector<T>& v) {
+    return std::find(v.begin(), v.end(), e) != v.end();
+}
+
+static inline Result analyzeStatus(status_t status) {
+    switch (status) {
+        case 0:
+            return Result::OK;
+        case -EINVAL:
+            return Result::INVALID_ARGUMENTS;
+        case -ENODATA:
+            return Result::INVALID_STATE;
+        case -ENODEV:
+            return Result::NOT_INITIALIZED;
+        case -ENOSYS:
+            return Result::NOT_SUPPORTED;
+        default:
+            return Result::INVALID_STATE;
+    }
+}
+
+static inline Result analyzeStatus(const char* className, const char* funcName, status_t status,
+                                   const std::vector<int>& ignoreErrors = {}) {
+    if (status != 0 && !element_in(-status, ignoreErrors)) {
+        ALOGW("Error from HAL %s in function %s: %s", className, funcName, strerror(-status));
+    }
+    return analyzeStatus(status);
+}
+
+}  // namespace util
 }  // namespace implementation
 }  // namespace V2_0
 }  // namespace audio