DO NOT MERGE: 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
Change-Id: I82ea6f5de2183dd046d4bf5683600c97f37ab4da

2 files changed, 382 insertions, 0 deletions

diff --git a/camera/Android.mk b/camera/Android.mk
index e633450..5cedab0 100644
--- a/camera/Android.mk
+++ b/camera/Android.mk
@@ -8,6 +8,7 @@ LOCAL_SRC_FILES:= \
 	Camera.cpp \
 	CameraMetadata.cpp \
 	CameraParameters.cpp \
+	CameraParameters2.cpp \
 	ICamera.cpp \
 	ICameraClient.cpp \
 	ICameraService.cpp \
diff --git a/camera/CameraParameters2.cpp b/camera/CameraParameters2.cpp
new file mode 100644
index 0000000..eac79e1
--- /dev/null
+++ b/camera/CameraParameters2.cpp
@@ -0,0 +1,381 @@
+/*
+**
+** 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 "CameraParams2"
+// #define LOG_NDEBUG 0
+#include <utils/Log.h>
+
+#include <string.h>
+#include <stdlib.h>
+#include <camera/CameraParameters2.h>
+
+namespace android {
+
+CameraParameters2::CameraParameters2()
+                : mMap()
+{
+}
+
+CameraParameters2::~CameraParameters2()
+{
+}
+
+String8 CameraParameters2::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 += ";";
+    }
+
+    ALOGV("%s: Flattened params = %s", __FUNCTION__, flattened.string());
+
+    return flattened;
+}
+
+void CameraParameters2::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 CameraParameters2::set(const char *key, const char *value)
+{
+    // XXX i think i can do this with strspn()
+    if (strchr(key, '=') || strchr(key, ';')) {
+        //XXX ALOGE("Key \"%s\"contains invalid character (= or ;)", key);
+        return;
+    }
+
+    if (strchr(value, '=') || strchr(value, ';')) {
+        //XXX ALOGE("Value \"%s\"contains invalid character (= or ;)", value);
+        return;
+    }
+
+    // Replacing a value updates the key's order to be the new largest order
+    ssize_t res = mMap.replaceValueFor(String8(key), String8(value));
+    LOG_ALWAYS_FATAL_IF(res < 0, "replaceValueFor(%s,%s) failed", key, value);
+}
+
+void CameraParameters2::set(const char *key, int value)
+{
+    char str[16];
+    sprintf(str, "%d", value);
+    set(key, str);
+}
+
+void CameraParameters2::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 *CameraParameters2::get(const char *key) const
+{
+    ssize_t idx = mMap.indexOfKey(String8(key));
+    if (idx < 0) {
+        return NULL;
+    } else {
+        return mMap.valueAt(idx).string();
+    }
+}
+
+int CameraParameters2::getInt(const char *key) const
+{
+    const char *v = get(key);
+    if (v == 0)
+        return -1;
+    return strtol(v, 0, 0);
+}
+
+float CameraParameters2::getFloat(const char *key) const
+{
+    const char *v = get(key);
+    if (v == 0) return -1;
+    return strtof(v, 0);
+}
+
+status_t CameraParameters2::compareSetOrder(const char *key1, const char *key2,
+        int *order) const {
+    if (key1 == NULL) {
+        ALOGE("%s: key1 must not be NULL", __FUNCTION__);
+        return BAD_VALUE;
+    } else if (key2 == NULL) {
+        ALOGE("%s: key2 must not be NULL", __FUNCTION__);
+        return BAD_VALUE;
+    } else if (order == NULL) {
+        ALOGE("%s: order must not be NULL", __FUNCTION__);
+        return BAD_VALUE;
+    }
+
+    ssize_t index1 = mMap.indexOfKey(String8(key1));
+    ssize_t index2 = mMap.indexOfKey(String8(key2));
+    if (index1 < 0) {
+        ALOGW("%s: Key1 (%s) was not set", __FUNCTION__, key1);
+        return NAME_NOT_FOUND;
+    } else if (index2 < 0) {
+        ALOGW("%s: Key2 (%s) was not set", __FUNCTION__, key2);
+        return NAME_NOT_FOUND;
+    }
+
+    *order = (index1 == index2) ? 0  :
+             (index1 < index2)  ? -1 :
+             1;
+
+    return OK;
+}
+
+void CameraParameters2::remove(const char *key)
+{
+    mMap.removeItem(String8(key));
+}
+
+// Parse string like "640x480" or "10000,20000"
+static int parse_pair(const char *str, int *first, int *second, char delim,
+                      char **endptr = NULL)
+{
+    // Find the first integer.
+    char *end;
+    int w = (int)strtol(str, &end, 10);
+    // If a delimeter does not immediately follow, give up.
+    if (*end != delim) {
+        ALOGE("Cannot find delimeter (%c) in str=%s", delim, str);
+        return -1;
+    }
+
+    // Find the second integer, immediately after the delimeter.
+    int h = (int)strtol(end+1, &end, 10);
+
+    *first = w;
+    *second = h;
+
+    if (endptr) {
+        *endptr = end;
+    }
+
+    return 0;
+}
+
+static void parseSizesList(const char *sizesStr, Vector<Size> &sizes)
+{
+    if (sizesStr == 0) {
+        return;
+    }
+
+    char *sizeStartPtr = (char *)sizesStr;
+
+    while (true) {
+        int width, height;
+        int success = parse_pair(sizeStartPtr, &width, &height, 'x',
+                                 &sizeStartPtr);
+        if (success == -1 || (*sizeStartPtr != ',' && *sizeStartPtr != '\0')) {
+            ALOGE("Picture sizes string \"%s\" contains invalid character.", sizesStr);
+            return;
+        }
+        sizes.push(Size(width, height));
+
+        if (*sizeStartPtr == '\0') {
+            return;
+        }
+        sizeStartPtr++;
+    }
+}
+
+void CameraParameters2::setPreviewSize(int width, int height)
+{
+    char str[32];
+    sprintf(str, "%dx%d", width, height);
+    set(CameraParameters::KEY_PREVIEW_SIZE, str);
+}
+
+void CameraParameters2::getPreviewSize(int *width, int *height) const
+{
+    *width = *height = -1;
+    // Get the current string, if it doesn't exist, leave the -1x-1
+    const char *p = get(CameraParameters::KEY_PREVIEW_SIZE);
+    if (p == 0)  return;
+    parse_pair(p, width, height, 'x');
+}
+
+void CameraParameters2::getPreferredPreviewSizeForVideo(int *width, int *height) const
+{
+    *width = *height = -1;
+    const char *p = get(CameraParameters::KEY_PREFERRED_PREVIEW_SIZE_FOR_VIDEO);
+    if (p == 0)  return;
+    parse_pair(p, width, height, 'x');
+}
+
+void CameraParameters2::getSupportedPreviewSizes(Vector<Size> &sizes) const
+{
+    const char *previewSizesStr = get(CameraParameters::KEY_SUPPORTED_PREVIEW_SIZES);
+    parseSizesList(previewSizesStr, sizes);
+}
+
+void CameraParameters2::setVideoSize(int width, int height)
+{
+    char str[32];
+    sprintf(str, "%dx%d", width, height);
+    set(CameraParameters::KEY_VIDEO_SIZE, str);
+}
+
+void CameraParameters2::getVideoSize(int *width, int *height) const
+{
+    *width = *height = -1;
+    const char *p = get(CameraParameters::KEY_VIDEO_SIZE);
+    if (p == 0) return;
+    parse_pair(p, width, height, 'x');
+}
+
+void CameraParameters2::getSupportedVideoSizes(Vector<Size> &sizes) const
+{
+    const char *videoSizesStr = get(CameraParameters::KEY_SUPPORTED_VIDEO_SIZES);
+    parseSizesList(videoSizesStr, sizes);
+}
+
+void CameraParameters2::setPreviewFrameRate(int fps)
+{
+    set(CameraParameters::KEY_PREVIEW_FRAME_RATE, fps);
+}
+
+int CameraParameters2::getPreviewFrameRate() const
+{
+    return getInt(CameraParameters::KEY_PREVIEW_FRAME_RATE);
+}
+
+void CameraParameters2::getPreviewFpsRange(int *min_fps, int *max_fps) const
+{
+    *min_fps = *max_fps = -1;
+    const char *p = get(CameraParameters::KEY_PREVIEW_FPS_RANGE);
+    if (p == 0) return;
+    parse_pair(p, min_fps, max_fps, ',');
+}
+
+void CameraParameters2::setPreviewFpsRange(int min_fps, int max_fps)
+{
+    String8 str = String8::format("%d,%d", min_fps, max_fps);
+    set(CameraParameters::KEY_PREVIEW_FPS_RANGE, str.string());
+}
+
+void CameraParameters2::setPreviewFormat(const char *format)
+{
+    set(CameraParameters::KEY_PREVIEW_FORMAT, format);
+}
+
+const char *CameraParameters2::getPreviewFormat() const
+{
+    return get(CameraParameters::KEY_PREVIEW_FORMAT);
+}
+
+void CameraParameters2::setPictureSize(int width, int height)
+{
+    char str[32];
+    sprintf(str, "%dx%d", width, height);
+    set(CameraParameters::KEY_PICTURE_SIZE, str);
+}
+
+void CameraParameters2::getPictureSize(int *width, int *height) const
+{
+    *width = *height = -1;
+    // Get the current string, if it doesn't exist, leave the -1x-1
+    const char *p = get(CameraParameters::KEY_PICTURE_SIZE);
+    if (p == 0) return;
+    parse_pair(p, width, height, 'x');
+}
+
+void CameraParameters2::getSupportedPictureSizes(Vector<Size> &sizes) const
+{
+    const char *pictureSizesStr = get(CameraParameters::KEY_SUPPORTED_PICTURE_SIZES);
+    parseSizesList(pictureSizesStr, sizes);
+}
+
+void CameraParameters2::setPictureFormat(const char *format)
+{
+    set(CameraParameters::KEY_PICTURE_FORMAT, format);
+}
+
+const char *CameraParameters2::getPictureFormat() const
+{
+    return get(CameraParameters::KEY_PICTURE_FORMAT);
+}
+
+void CameraParameters2::dump() const
+{
+    ALOGD("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);
+        ALOGD("%s: %s\n", k.string(), v.string());
+    }
+}
+
+status_t CameraParameters2::dump(int fd, const Vector<String16>& args) const
+{
+    const size_t SIZE = 256;
+    char buffer[SIZE];
+    String8 result;
+    snprintf(buffer, 255, "CameraParameters2::dump: mMap.size = %zu\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