Import goldfish HAL sources from devices/generic/goldfish

We import all code here so we can customize and keep in sync with what
we do on the host side more easily.

android/camera/JpegCompressor.cpp

@@ -0,0 +1,95 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/*
+ * Contains implementation of a class NV21JpegCompressor that encapsulates a
+ * converter between NV21, and JPEG formats.
+ */
+
+#define LOG_NDEBUG 0
+#define LOG_TAG "EmulatedCamera_JPEG"
+#include <cutils/log.h>
+#include <assert.h>
+#include <dlfcn.h>
+#include "JpegCompressor.h"
+
+namespace android {
+
+void* NV21JpegCompressor::mDl = NULL;
+
+static void* getSymbol(void* dl, const char* signature) {
+    void* res = dlsym(dl, signature);
+    assert (res != NULL);
+
+    return res;
+}
+
+typedef void (*InitFunc)(JpegStub* stub, int* strides);
+typedef void (*CleanupFunc)(JpegStub* stub);
+typedef int (*CompressFunc)(JpegStub* stub, const void* image,
+        int width, int height, int quality);
+typedef void (*GetCompressedImageFunc)(JpegStub* stub, void* buff);
+typedef size_t (*GetCompressedSizeFunc)(JpegStub* stub);
+
+NV21JpegCompressor::NV21JpegCompressor()
+{
+    const char dlName[] = "/system/lib/hw/camera.goldfish.jpeg.so";
+    if (mDl == NULL) {
+        mDl = dlopen(dlName, RTLD_NOW);
+    }
+    assert(mDl != NULL);
+
+    InitFunc f = (InitFunc)getSymbol(mDl, "JpegStub_init");
+    (*f)(&mStub, mStrides);
+}
+
+NV21JpegCompressor::~NV21JpegCompressor()
+{
+    CleanupFunc f = (CleanupFunc)getSymbol(mDl, "JpegStub_cleanup");
+    (*f)(&mStub);
+}
+
+/****************************************************************************
+ * Public API
+ ***************************************************************************/
+
+status_t NV21JpegCompressor::compressRawImage(const void* image,
+                                              int width,
+                                              int height,
+                                              int quality)
+{
+    mStrides[0] = width;
+    mStrides[1] = width;
+    CompressFunc f = (CompressFunc)getSymbol(mDl, "JpegStub_compress");
+    return (status_t)(*f)(&mStub, image, width, height, quality);
+}
+
+
+size_t NV21JpegCompressor::getCompressedSize()
+{
+    GetCompressedSizeFunc f = (GetCompressedSizeFunc)getSymbol(mDl,
+            "JpegStub_getCompressedSize");
+    return (*f)(&mStub);
+}
+
+void NV21JpegCompressor::getCompressedImage(void* buff)
+{
+    GetCompressedImageFunc f = (GetCompressedImageFunc)getSymbol(mDl,
+            "JpegStub_getCompressedImage");
+    (*f)(&mStub, buff);
+}
+
+}; /* namespace android */