diff --git a/camera/CameraParameters.cpp b/camera/CameraParameters.cpp
new file mode 100644
index 0000000..1bf1759
--- /dev/null
+++ b/camera/CameraParameters.cpp
@@ -0,0 +1,369 @@
+/*
+**
+** Copyright 2008, 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.
+*/
+
+#define LOG_TAG "CameraParams"
+#include <utils/Log.h>
+
+#include <string.h>
+#include <stdlib.h>
+#include <camera/CameraParameters.h>
+
+namespace android {
+// Parameter keys to communicate between camera application and driver.
+const char CameraParameters::KEY_PREVIEW_SIZE[] = "preview-size";
+const char CameraParameters::KEY_SUPPORTED_PREVIEW_SIZES[] = "preview-size-values";
+const char CameraParameters::KEY_PREVIEW_FORMAT[] = "preview-format";
+const char CameraParameters::KEY_SUPPORTED_PREVIEW_FORMATS[] = "preview-format-values";
+const char CameraParameters::KEY_PREVIEW_FRAME_RATE[] = "preview-frame-rate";
+const char CameraParameters::KEY_SUPPORTED_PREVIEW_FRAME_RATES[] = "preview-frame-rate-values";
+const char CameraParameters::KEY_PICTURE_SIZE[] = "picture-size";
+const char CameraParameters::KEY_SUPPORTED_PICTURE_SIZES[] = "picture-size-values";
+const char CameraParameters::KEY_PICTURE_FORMAT[] = "picture-format";
+const char CameraParameters::KEY_SUPPORTED_PICTURE_FORMATS[] = "picture-format-values";
+const char CameraParameters::KEY_JPEG_THUMBNAIL_WIDTH[] = "jpeg-thumbnail-width";
+const char CameraParameters::KEY_JPEG_THUMBNAIL_HEIGHT[] = "jpeg-thumbnail-height";
+const char CameraParameters::KEY_SUPPORTED_JPEG_THUMBNAIL_SIZES[] = "jpeg-thumbnail-size-values";
+const char CameraParameters::KEY_JPEG_THUMBNAIL_QUALITY[] = "jpeg-thumbnail-quality";
+const char CameraParameters::KEY_JPEG_QUALITY[] = "jpeg-quality";
+const char CameraParameters::KEY_ROTATION[] = "rotation";
+const char CameraParameters::KEY_GPS_LATITUDE[] = "gps-latitude";
+const char CameraParameters::KEY_GPS_LONGITUDE[] = "gps-longitude";
+const char CameraParameters::KEY_GPS_ALTITUDE[] = "gps-altitude";
+const char CameraParameters::KEY_GPS_TIMESTAMP[] = "gps-timestamp";
+const char CameraParameters::KEY_WHITE_BALANCE[] = "whitebalance";
+const char CameraParameters::KEY_SUPPORTED_WHITE_BALANCE[] = "whitebalance-values";
+const char CameraParameters::KEY_EFFECT[] = "effect";
+const char CameraParameters::KEY_SUPPORTED_EFFECTS[] = "effect-values";
+const char CameraParameters::KEY_ANTIBANDING[] = "antibanding";
+const char CameraParameters::KEY_SUPPORTED_ANTIBANDING[] = "antibanding-values";
+const char CameraParameters::KEY_SCENE_MODE[] = "scene-mode";
+const char CameraParameters::KEY_SUPPORTED_SCENE_MODES[] = "scene-mode-values";
+const char CameraParameters::KEY_FLASH_MODE[] = "flash-mode";
+const char CameraParameters::KEY_SUPPORTED_FLASH_MODES[] = "flash-mode-values";
+const char CameraParameters::KEY_FOCUS_MODE[] = "focus-mode";
+const char CameraParameters::KEY_SUPPORTED_FOCUS_MODES[] = "focus-mode-values";
+const char CameraParameters::KEY_FOCAL_LENGTH[] = "focal-length";
+const char CameraParameters::KEY_HORIZONTAL_VIEW_ANGLE[] = "horizontal-view-angle";
+const char CameraParameters::KEY_VERTICAL_VIEW_ANGLE[] = "vertical-view-angle";
+const char CameraParameters::KEY_EXPOSURE_COMPENSATION[] = "exposure-compensation";
+const char CameraParameters::KEY_SUPPORTED_EXPOSURE_COMPENSATION[] = "exposure-compensation-values";
+
+// Values for white balance settings.
+const char CameraParameters::WHITE_BALANCE_AUTO[] = "auto";
+const char CameraParameters::WHITE_BALANCE_INCANDESCENT[] = "incandescent";
+const char CameraParameters::WHITE_BALANCE_FLUORESCENT[] = "fluorescent";
+const char CameraParameters::WHITE_BALANCE_WARM_FLUORESCENT[] = "warm-fluorescent";
+const char CameraParameters::WHITE_BALANCE_DAYLIGHT[] = "daylight";
+const char CameraParameters::WHITE_BALANCE_CLOUDY_DAYLIGHT[] = "cloudy-daylight";
+const char CameraParameters::WHITE_BALANCE_TWILIGHT[] = "twilight";
+const char CameraParameters::WHITE_BALANCE_SHADE[] = "shade";
+
+// Values for effect settings.
+const char CameraParameters::EFFECT_NONE[] = "none";
+const char CameraParameters::EFFECT_MONO[] = "mono";
+const char CameraParameters::EFFECT_NEGATIVE[] = "negative";
+const char CameraParameters::EFFECT_SOLARIZE[] = "solarize";
+const char CameraParameters::EFFECT_SEPIA[] = "sepia";
+const char CameraParameters::EFFECT_POSTERIZE[] = "posterize";
+const char CameraParameters::EFFECT_WHITEBOARD[] = "whiteboard";
+const char CameraParameters::EFFECT_BLACKBOARD[] = "blackboard";
+const char CameraParameters::EFFECT_AQUA[] = "aqua";
+
+// Values for antibanding settings.
+const char CameraParameters::ANTIBANDING_AUTO[] = "auto";
+const char CameraParameters::ANTIBANDING_50HZ[] = "50hz";
+const char CameraParameters::ANTIBANDING_60HZ[] = "60hz";
+const char CameraParameters::ANTIBANDING_OFF[] = "off";
+
+// Values for flash mode settings.
+const char CameraParameters::FLASH_MODE_OFF[] = "off";
+const char CameraParameters::FLASH_MODE_AUTO[] = "auto";
+const char CameraParameters::FLASH_MODE_ON[] = "on";
+const char CameraParameters::FLASH_MODE_RED_EYE[] = "red-eye";
+const char CameraParameters::FLASH_MODE_TORCH[] = "torch";
+
+// Values for scene mode settings.
+const char CameraParameters::SCENE_MODE_AUTO[] = "auto";
+const char CameraParameters::SCENE_MODE_ACTION[] = "action";
+const char CameraParameters::SCENE_MODE_PORTRAIT[] = "portrait";
+const char CameraParameters::SCENE_MODE_LANDSCAPE[] = "landscape";
+const char CameraParameters::SCENE_MODE_NIGHT[] = "night";
+const char CameraParameters::SCENE_MODE_NIGHT_PORTRAIT[] = "night-portrait";
+const char CameraParameters::SCENE_MODE_THEATRE[] = "theatre";
+const char CameraParameters::SCENE_MODE_BEACH[] = "beach";
+const char CameraParameters::SCENE_MODE_SNOW[] = "snow";
+const char CameraParameters::SCENE_MODE_SUNSET[] = "sunset";
+const char CameraParameters::SCENE_MODE_STEADYPHOTO[] = "steadyphoto";
+const char CameraParameters::SCENE_MODE_FIREWORKS[] = "fireworks";
+const char CameraParameters::SCENE_MODE_SPORTS[] = "sports";
+const char CameraParameters::SCENE_MODE_PARTY[] = "party";
+const char CameraParameters::SCENE_MODE_CANDLELIGHT[] = "candlelight";
+
+// Formats for setPreviewFormat and setPictureFormat.
+const char CameraParameters::PIXEL_FORMAT_YUV422SP[] = "yuv422sp";
+const char CameraParameters::PIXEL_FORMAT_YUV420SP[] = "yuv420sp";
+const char CameraParameters::PIXEL_FORMAT_YUV422I[] = "yuv422i-yuyv";
+const char CameraParameters::PIXEL_FORMAT_RGB565[] = "rgb565";
+const char CameraParameters::PIXEL_FORMAT_JPEG[] = "jpeg";
+
+// Values for focus mode settings.
+const char CameraParameters::FOCUS_MODE_AUTO[] = "auto";
+const char CameraParameters::FOCUS_MODE_INFINITY[] = "infinity";
+const char CameraParameters::FOCUS_MODE_MACRO[] = "macro";
+const char CameraParameters::FOCUS_MODE_FIXED[] = "fixed";
+
+CameraParameters::CameraParameters()
+                : mMap()
+{
+}
+
+CameraParameters::~CameraParameters()
+{
+}
+
+String8 CameraParameters::flatten() const
+{
+    String8 flattened("");
+    size_t size = mMap.size();
+
+    for (size_t i = 0; i < size; i++) {
+        String8 k, v;
+        k = mMap.keyAt(i);
+        v = mMap.valueAt(i);
+
+        flattened += k;
+        flattened += "=";
+        flattened += v;
+        if (i != size-1)
+            flattened += ";";
+    }
+
+    return flattened;
+}
+
+void CameraParameters::unflatten(const String8 &params)
+{
+    const char *a = params.string();
+    const char *b;
+
+    mMap.clear();
+
+    for (;;) {
+        // Find the bounds of the key name.
+        b = strchr(a, '=');
+        if (b == 0)
+            break;
+
+        // Create the key string.
+        String8 k(a, (size_t)(b-a));
+
+        // Find the value.
+        a = b+1;
+        b = strchr(a, ';');
+        if (b == 0) {
+            // If there's no semicolon, this is the last item.
+            String8 v(a);
+            mMap.add(k, v);
+            break;
+        }
+
+        String8 v(a, (size_t)(b-a));
+        mMap.add(k, v);
+        a = b+1;
+    }
+}
+
+
+void CameraParameters::set(const char *key, const char *value)
+{
+    // XXX i think i can do this with strspn()
+    if (strchr(key, '=') || strchr(key, ';')) {
+        //XXX LOGE("Key \"%s\"contains invalid character (= or ;)", key);
+        return;
+    }
+
+    if (strchr(value, '=') || strchr(key, ';')) {
+        //XXX LOGE("Value \"%s\"contains invalid character (= or ;)", value);
+        return;
+    }
+
+    mMap.replaceValueFor(String8(key), String8(value));
+}
+
+void CameraParameters::set(const char *key, int value)
+{
+    char str[16];
+    sprintf(str, "%d", value);
+    set(key, str);
+}
+
+void CameraParameters::setFloat(const char *key, float value)
+{
+    char str[16];  // 14 should be enough. We overestimate to be safe.
+    snprintf(str, sizeof(str), "%g", value);
+    set(key, str);
+}
+
+const char *CameraParameters::get(const char *key) const
+{
+    String8 v = mMap.valueFor(String8(key));
+    if (v.length() == 0)
+        return 0;
+    return v.string();
+}
+
+int CameraParameters::getInt(const char *key) const
+{
+    const char *v = get(key);
+    if (v == 0)
+        return -1;
+    return strtol(v, 0, 0);
+}
+
+float CameraParameters::getFloat(const char *key) const
+{
+    const char *v = get(key);
+    if (v == 0) return -1;
+    return strtof(v, 0);
+}
+
+static int parse_size(const char *str, int &width, int &height)
+{
+    // Find the width.
+    char *end;
+    int w = (int)strtol(str, &end, 10);
+    // If an 'x' does not immediately follow, give up.
+    if (*end != 'x')
+        return -1;
+
+    // Find the height, immediately after the 'x'.
+    int h = (int)strtol(end+1, 0, 10);
+
+    width = w;
+    height = h;
+
+    return 0;
+}
+
+void CameraParameters::setPreviewSize(int width, int height)
+{
+    char str[32];
+    sprintf(str, "%dx%d", width, height);
+    set(KEY_PREVIEW_SIZE, str);
+}
+
+void CameraParameters::getPreviewSize(int *width, int *height) const
+{
+    *width = -1;
+    *height = -1;
+
+    // Get the current string, if it doesn't exist, leave the -1x-1
+    const char *p = get(KEY_PREVIEW_SIZE);
+    if (p == 0)
+        return;
+
+    int w, h;
+    if (parse_size(p, w, h) == 0) {
+        *width = w;
+        *height = h;
+    }
+}
+
+void CameraParameters::setPreviewFrameRate(int fps)
+{
+    set(KEY_PREVIEW_FRAME_RATE, fps);
+}
+
+int CameraParameters::getPreviewFrameRate() const
+{
+    return getInt(KEY_PREVIEW_FRAME_RATE);
+}
+
+void CameraParameters::setPreviewFormat(const char *format)
+{
+    set(KEY_PREVIEW_FORMAT, format);
+}
+
+const char *CameraParameters::getPreviewFormat() const
+{
+    return get(KEY_PREVIEW_FORMAT);
+}
+
+void CameraParameters::setPictureSize(int width, int height)
+{
+    char str[32];
+    sprintf(str, "%dx%d", width, height);
+    set(KEY_PICTURE_SIZE, str);
+}
+
+void CameraParameters::getPictureSize(int *width, int *height) const
+{
+    *width = -1;
+    *height = -1;
+
+    // Get the current string, if it doesn't exist, leave the -1x-1
+    const char *p = get(KEY_PICTURE_SIZE);
+    if (p == 0)
+        return;
+
+    int w, h;
+    if (parse_size(p, w, h) == 0) {
+        *width = w;
+        *height = h;
+    }
+}
+
+void CameraParameters::setPictureFormat(const char *format)
+{
+    set(KEY_PICTURE_FORMAT, format);
+}
+
+const char *CameraParameters::getPictureFormat() const
+{
+    return get(KEY_PICTURE_FORMAT);
+}
+
+void CameraParameters::dump() const
+{
+    LOGD("dump: mMap.size = %d", mMap.size());
+    for (size_t i = 0; i < mMap.size(); i++) {
+        String8 k, v;
+        k = mMap.keyAt(i);
+        v = mMap.valueAt(i);
+        LOGD("%s: %s\n", k.string(), v.string());
+    }
+}
+
+status_t CameraParameters::dump(int fd, const Vector<String16>& args) const
+{
+    const size_t SIZE = 256;
+    char buffer[SIZE];
+    String8 result;
+    snprintf(buffer, 255, "CameraParameters::dump: mMap.size = %d\n", mMap.size());
+    result.append(buffer);
+    for (size_t i = 0; i < mMap.size(); i++) {
+        String8 k, v;
+        k = mMap.keyAt(i);
+        v = mMap.valueAt(i);
+        snprintf(buffer, 255, "\t%s: %s\n", k.string(), v.string());
+        result.append(buffer);
+    }
+    write(fd, result.string(), result.size());
+    return NO_ERROR;
+}
+
+}; // namespace android