From 618ff8a48a0c895a78f91f5692510c2a809425c3 Mon Sep 17 00:00:00 2001
From: Chien-Yu Chen <cychen@google.com>
Date: Fri, 13 Mar 2015 11:27:17 -0700
Subject: camera2: add reprocess support

Add support to create input stream, submit reprocess capture requests,
and receive reprocess capture results.

Change-Id: Iee2d4313f3d52616a484eaea7a28f5ef9d8a674b
---
 camera/camera2/CaptureRequest.cpp    |  9 +++++
 camera/camera2/ICameraDeviceUser.cpp | 74 ++++++++++++++++++++++++++++++++++++
 2 files changed, 83 insertions(+)

(limited to 'camera')

diff --git a/camera/camera2/CaptureRequest.cpp b/camera/camera2/CaptureRequest.cpp
index 66d6913..4217bc6 100644
--- a/camera/camera2/CaptureRequest.cpp
+++ b/camera/camera2/CaptureRequest.cpp
@@ -81,6 +81,13 @@ status_t CaptureRequest::readFromParcel(Parcel* parcel) {
         mSurfaceList.push_back(surface);
     }
 
+    int isReprocess = 0;
+    if ((err = parcel->readInt32(&isReprocess)) != OK) {
+        ALOGE("%s: Failed to read reprocessing from parcel", __FUNCTION__);
+        return err;
+    }
+    mIsReprocess = (isReprocess != 0);
+
     return OK;
 }
 
@@ -118,6 +125,8 @@ status_t CaptureRequest::writeToParcel(Parcel* parcel) const {
         parcel->writeStrongBinder(binder);
     }
 
+    parcel->writeInt32(mIsReprocess ? 1 : 0);
+
     return OK;
 }
 
diff --git a/camera/camera2/ICameraDeviceUser.cpp b/camera/camera2/ICameraDeviceUser.cpp
index 89c6fb7..2ec08a9 100644
--- a/camera/camera2/ICameraDeviceUser.cpp
+++ b/camera/camera2/ICameraDeviceUser.cpp
@@ -42,6 +42,8 @@ enum {
     END_CONFIGURE,
     DELETE_STREAM,
     CREATE_STREAM,
+    CREATE_INPUT_STREAM,
+    GET_INPUT_SURFACE,
     CREATE_DEFAULT_REQUEST,
     GET_CAMERA_INFO,
     WAIT_UNTIL_IDLE,
@@ -225,6 +227,50 @@ public:
         return reply.readInt32();
     }
 
+    virtual status_t createInputStream(int width, int height, int format)
+    {
+        Parcel data, reply;
+        data.writeInterfaceToken(ICameraDeviceUser::getInterfaceDescriptor());
+        data.writeInt32(width);
+        data.writeInt32(height);
+        data.writeInt32(format);
+
+        remote()->transact(CREATE_INPUT_STREAM, data, &reply);
+
+        reply.readExceptionCode();
+        return reply.readInt32();
+    }
+
+    // get the buffer producer of the input stream
+    virtual status_t getInputBufferProducer(
+            sp<IGraphicBufferProducer> *producer) {
+        if (producer == NULL) {
+            return BAD_VALUE;
+        }
+
+        Parcel data, reply;
+        data.writeInterfaceToken(ICameraDeviceUser::getInterfaceDescriptor());
+
+        remote()->transact(GET_INPUT_SURFACE, data, &reply);
+
+        reply.readExceptionCode();
+        status_t result = reply.readInt32() ;
+        if (result != OK) {
+            return result;
+        }
+
+        sp<IGraphicBufferProducer> bp = NULL;
+        if (reply.readInt32() != 0) {
+            String16 name = readMaybeEmptyString16(reply);
+            bp = interface_cast<IGraphicBufferProducer>(
+                    reply.readStrongBinder());
+        }
+
+        *producer = bp;
+
+        return *producer == NULL ? INVALID_OPERATION : OK;
+    }
+
     // Create a request object from a template.
     virtual status_t createDefaultRequest(int templateId,
                                           /*out*/
@@ -409,7 +455,35 @@ status_t BnCameraDeviceUser::onTransact(
 
             return NO_ERROR;
         } break;
+        case CREATE_INPUT_STREAM: {
+            CHECK_INTERFACE(ICameraDeviceUser, data, reply);
+            int width, height, format;
+
+            width = data.readInt32();
+            height = data.readInt32();
+            format = data.readInt32();
+            status_t ret = createInputStream(width, height, format);
+
+            reply->writeNoException();
+            reply->writeInt32(ret);
+            return NO_ERROR;
+
+        } break;
+        case GET_INPUT_SURFACE: {
+            CHECK_INTERFACE(ICameraDeviceUser, data, reply);
+
+            sp<IGraphicBufferProducer> bp;
+            status_t ret = getInputBufferProducer(&bp);
+            sp<IBinder> b(IInterface::asBinder(ret == OK ? bp : NULL));
+
+            reply->writeNoException();
+            reply->writeInt32(ret);
+            reply->writeInt32(1);
+            reply->writeString16(String16("camera input")); // name of surface
+            reply->writeStrongBinder(b);
 
+            return NO_ERROR;
+        } break;
         case CREATE_DEFAULT_REQUEST: {
             CHECK_INTERFACE(ICameraDeviceUser, data, reply);
 
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