camera: Fix setParameters for Preview FPS single/range values

As a workaround, duplicate CameraParameters into CameraParameters2 to
prevent ABI break for some camera HALs that directly link into
CameraParameters.

CameraParameters2 implements the real fixes needed in the framework,
while CameraParameters is left in to satisfy older camera HALs.

Bug: 12609188
Bug: 16654949
Change-Id: I82ea6f5de2183dd046d4bf5683600c97f37ab4da

1 files changed, 203 insertions, 0 deletions

diff --git a/include/camera/CameraParameters2.h b/include/camera/CameraParameters2.h
new file mode 100644
index 0000000..88ad812
--- /dev/null
+++ b/include/camera/CameraParameters2.h
@@ -0,0 +1,203 @@
+/*
+ * Copyright (C) 2014 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.
+ */
+
+#ifndef ANDROID_HARDWARE_CAMERA_PARAMETERS2_H
+#define ANDROID_HARDWARE_CAMERA_PARAMETERS2_H
+
+#include <utils/Vector.h>
+#include <utils/String8.h>
+#include "CameraParameters.h"
+
+namespace android {
+
+/**
+ * A copy of CameraParameters plus ABI-breaking changes. Needed
+ * because some camera HALs directly link to CameraParameters and cannot
+ * tolerate an ABI change.
+ */
+class CameraParameters2
+{
+public:
+    CameraParameters2();
+    CameraParameters2(const String8 &params) { unflatten(params); }
+    ~CameraParameters2();
+
+    String8 flatten() const;
+    void unflatten(const String8 &params);
+
+    void set(const char *key, const char *value);
+    void set(const char *key, int value);
+    void setFloat(const char *key, float value);
+    // Look up string value by key.
+    // -- The string remains valid until the next set/remove of the same key,
+    //    or until the map gets cleared.
+    const char *get(const char *key) const;
+    int getInt(const char *key) const;
+    float getFloat(const char *key) const;
+
+    // Compare the order that key1 was set vs the order that key2 was set.
+    //
+    // Sets the order parameter to an integer less than, equal to, or greater
+    // than zero if key1's set order was respectively, to be less than, to
+    // match, or to be greater than key2's set order.
+    //
+    // Error codes:
+    //  * NAME_NOT_FOUND - if either key has not been set previously
+    //  * BAD_VALUE - if any of the parameters are NULL
+    status_t compareSetOrder(const char *key1, const char *key2,
+            /*out*/
+            int *order) const;
+
+    void remove(const char *key);
+
+    void setPreviewSize(int width, int height);
+    void getPreviewSize(int *width, int *height) const;
+    void getSupportedPreviewSizes(Vector<Size> &sizes) const;
+
+    // Set the dimensions in pixels to the given width and height
+    // for video frames. The given width and height must be one
+    // of the supported dimensions returned from
+    // getSupportedVideoSizes(). Must not be called if
+    // getSupportedVideoSizes() returns an empty Vector of Size.
+    void setVideoSize(int width, int height);
+    // Retrieve the current dimensions (width and height)
+    // in pixels for video frames, which must be one of the
+    // supported dimensions returned from getSupportedVideoSizes().
+    // Must not be called if getSupportedVideoSizes() returns an
+    // empty Vector of Size.
+    void getVideoSize(int *width, int *height) const;
+    // Retrieve a Vector of supported dimensions (width and height)
+    // in pixels for video frames. If sizes returned from the method
+    // is empty, the camera does not support calls to setVideoSize()
+    // or getVideoSize(). In adddition, it also indicates that
+    // the camera only has a single output, and does not have
+    // separate output for video frames and preview frame.
+    void getSupportedVideoSizes(Vector<Size> &sizes) const;
+    // Retrieve the preferred preview size (width and height) in pixels
+    // for video recording. The given width and height must be one of
+    // supported preview sizes returned from getSupportedPreviewSizes().
+    // Must not be called if getSupportedVideoSizes() returns an empty
+    // Vector of Size. If getSupportedVideoSizes() returns an empty
+    // Vector of Size, the width and height returned from this method
+    // is invalid, and is "-1x-1".
+    void getPreferredPreviewSizeForVideo(int *width, int *height) const;
+
+    void setPreviewFrameRate(int fps);
+    int getPreviewFrameRate() const;
+    void getPreviewFpsRange(int *min_fps, int *max_fps) const;
+    void setPreviewFpsRange(int min_fps, int max_fps);
+    void setPreviewFormat(const char *format);
+    const char *getPreviewFormat() const;
+    void setPictureSize(int width, int height);
+    void getPictureSize(int *width, int *height) const;
+    void getSupportedPictureSizes(Vector<Size> &sizes) const;
+    void setPictureFormat(const char *format);
+    const char *getPictureFormat() const;
+
+    void dump() const;
+    status_t dump(int fd, const Vector<String16>& args) const;
+
+private:
+
+    // Quick and dirty map that maintains insertion order
+    template <typename KeyT, typename ValueT>
+    struct OrderedKeyedVector {
+
+        ssize_t add(const KeyT& key, const ValueT& value) {
+            return mList.add(Pair(key, value));
+        }
+
+        size_t size() const {
+            return mList.size();
+        }
+
+        const KeyT& keyAt(size_t idx) const {
+            return mList[idx].mKey;
+        }
+
+        const ValueT& valueAt(size_t idx) const {
+            return mList[idx].mValue;
+        }
+
+        const ValueT& valueFor(const KeyT& key) const {
+            ssize_t i = indexOfKey(key);
+            LOG_ALWAYS_FATAL_IF(i<0, "%s: key not found", __PRETTY_FUNCTION__);
+
+            return valueAt(i);
+        }
+
+        ssize_t indexOfKey(const KeyT& key) const {
+                size_t vectorIdx = 0;
+                for (; vectorIdx < mList.size(); ++vectorIdx) {
+                    if (mList[vectorIdx].mKey == key) {
+                        return (ssize_t) vectorIdx;
+                    }
+                }
+
+                return NAME_NOT_FOUND;
+        }
+
+        ssize_t removeItem(const KeyT& key) {
+            size_t vectorIdx = (size_t) indexOfKey(key);
+
+            if (vectorIdx < 0) {
+                return vectorIdx;
+            }
+
+            return mList.removeAt(vectorIdx);
+        }
+
+        void clear() {
+            mList.clear();
+        }
+
+        // Same as removing and re-adding. The key's index changes to max.
+        ssize_t replaceValueFor(const KeyT& key, const ValueT& value) {
+            removeItem(key);
+            return add(key, value);
+        }
+
+    private:
+
+        struct Pair {
+            Pair() : mKey(), mValue() {}
+            Pair(const KeyT& key, const ValueT& value) :
+                    mKey(key),
+                    mValue(value) {}
+            KeyT   mKey;
+            ValueT mValue;
+        };
+
+        Vector<Pair> mList;
+    };
+
+    /**
+     * Order matters: Keys that are set() later are stored later in the map.
+     *
+     * If two keys have meaning that conflict, then the later-set key
+     * wins.
+     *
+     * For example, preview FPS and preview FPS range conflict since only
+     * we only want to use the FPS range if that's the last thing that was set.
+     * So in that case, only use preview FPS range if it was set later than
+     * the preview FPS.
+     */
+    OrderedKeyedVector<String8,String8>    mMap;
+};
+
+}; // namespace android
+
+#endif