Fix issue #2084148: Define the format for the auto focus preview for barcode scanning

Add new manifest/aapt support for specifying device features an application
requires.  The aapt badging now returns these (as well as uses-permission since
I need to look for those anyway); if an app doesn't explicitly request the
camera feature but does request the permission, then aapt will say that it has
requested both the basic camera feature as well as the autofocus feature.

Here's what you put in your manifest to say you need a camera but don't need
autofocus:

    <uses-permission android:name="android.permission.CAMERA" />
    <uses-feature android:name="android.hardware.camera" />
    <uses-feature android:name="android.hardware.camera.autofocus" android:required="false" />

Here's what will be seen from aapt:

uses-permission:'android.permission.CAMERA'
uses-feature:'android.hardware.camera'
uses-feature-not-required:'android.hardware.camera.autofocus'

Change-Id: I4dd19cee0486cc54771f5bf14fc9db0e892115d5

1 files changed, 44 insertions, 0 deletions

diff --git a/tools/aapt/Command.cpp b/tools/aapt/Command.cpp
index d8215e7..f4afd7f 100644
--- a/tools/aapt/Command.cpp
+++ b/tools/aapt/Command.cpp
@@ -332,9 +332,11 @@ enum {
     TARGET_SDK_VERSION_ATTR = 0x01010270,
     TEST_ONLY_ATTR = 0x01010272,
     DENSITY_ATTR = 0x0101026c,
+    GL_ES_VERSION_ATTR = 0x01010281,
     SMALL_SCREEN_ATTR = 0x01010284,
     NORMAL_SCREEN_ATTR = 0x01010285,
     LARGE_SCREEN_ATTR = 0x01010286,
+    REQUIRED_ATTR = 0x0101028e,
 };
 
 const char *getComponentName(String8 &pkgName, String8 &componentName) {
@@ -520,6 +522,8 @@ int doDump(Bundle* bundle)
             bool actWidgetReceivers = false;
             bool actImeService = false;
             bool actWallpaperService = false;
+            bool specCameraFeature = false;
+            bool hasCameraPermission = false;
             int targetSdk = 0;
             int smallScreen = 1;
             int normalScreen = 1;
@@ -706,6 +710,37 @@ int doDump(Bundle* bundle)
                                 NORMAL_SCREEN_ATTR, NULL, 1);
                         largeScreen = getIntegerAttribute(tree,
                                 LARGE_SCREEN_ATTR, NULL, 1);
+                    } else if (tag == "uses-feature") {
+                        String8 name = getAttribute(tree, NAME_ATTR, &error);
+                        if (error == "") {
+                            int req = getIntegerAttribute(tree,
+                                    REQUIRED_ATTR, NULL, 1);
+                            if (name == "android.hardware.camera") {
+                                specCameraFeature = true;
+                            }
+                            printf("uses-feature%s:'%s'\n",
+                                    req ? "" : "-not-required", name.string());
+                        } else {
+                            int vers = getIntegerAttribute(tree,
+                                    GL_ES_VERSION_ATTR, &error);
+                            if (error == "") {
+                                printf("uses-gl-es:'0x%x'\n", vers);
+                            }
+                        }
+                    } else if (tag == "uses-permission") {
+                        String8 name = getAttribute(tree, NAME_ATTR, &error);
+                        if (error == "") {
+                            int opt = getIntegerAttribute(tree,
+                                    REQUIRED_ATTR, NULL, 1);
+                            if (name == "android.permission.CAMERA") {
+                                hasCameraPermission = true;
+                            }
+                            printf("uses-permission:'%s'\n", name.string());
+                        } else {
+                            fprintf(stderr, "ERROR getting 'android:name' attribute: %s\n",
+                                    error.string());
+                            goto bail;
+                        }
                     }
                 } else if (depth == 3 && withinApplication) {
                     withinActivity = false;
@@ -803,6 +838,15 @@ int doDump(Bundle* bundle)
                 }
             }
 
+            if (!specCameraFeature && hasCameraPermission) {
+                // For applications that have not explicitly stated their
+                // camera feature requirements, but have requested the camera
+                // permission, we are going to give them compatibility treatment
+                // of requiring the equivalent to original android devices.
+                printf("uses-feature:'android.hardware.camera'\n");
+                printf("uses-feature:'android.hardware.camera.autofocus'\n");
+            }
+            
             if (hasMainActivity) {
                 printf("main\n");
             }