382 lines
9.9 KiB
C++
382 lines
9.9 KiB
C++
/*
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**
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** Copyright 2008, The Android Open Source Project
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**
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** Licensed under the Apache License, Version 2.0 (the "License");
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** you may not use this file except in compliance with the License.
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** You may obtain a copy of the License at
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**
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** http://www.apache.org/licenses/LICENSE-2.0
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**
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** Unless required by applicable law or agreed to in writing, software
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** distributed under the License is distributed on an "AS IS" BASIS,
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** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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** See the License for the specific language governing permissions and
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** limitations under the License.
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*/
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#define LOG_TAG "CameraParams2"
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// #define LOG_NDEBUG 0
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#include <utils/Log.h>
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#include <string.h>
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#include <stdlib.h>
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#include <camera/CameraParameters2.h>
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namespace android {
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CameraParameters2::CameraParameters2()
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: mMap()
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{
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}
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CameraParameters2::~CameraParameters2()
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{
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}
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String8 CameraParameters2::flatten() const
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{
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String8 flattened("");
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size_t size = mMap.size();
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for (size_t i = 0; i < size; i++) {
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String8 k, v;
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k = mMap.keyAt(i);
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v = mMap.valueAt(i);
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flattened += k;
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flattened += "=";
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flattened += v;
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if (i != size-1)
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flattened += ";";
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}
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ALOGV("%s: Flattened params = %s", __FUNCTION__, flattened.string());
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return flattened;
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}
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void CameraParameters2::unflatten(const String8 ¶ms)
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{
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const char *a = params.string();
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const char *b;
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mMap.clear();
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for (;;) {
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// Find the bounds of the key name.
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b = strchr(a, '=');
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if (b == 0)
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break;
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// Create the key string.
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String8 k(a, (size_t)(b-a));
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// Find the value.
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a = b+1;
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b = strchr(a, ';');
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if (b == 0) {
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// If there's no semicolon, this is the last item.
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String8 v(a);
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mMap.add(k, v);
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break;
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}
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String8 v(a, (size_t)(b-a));
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mMap.add(k, v);
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a = b+1;
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}
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}
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void CameraParameters2::set(const char *key, const char *value)
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{
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// XXX i think i can do this with strspn()
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if (strchr(key, '=') || strchr(key, ';')) {
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//XXX ALOGE("Key \"%s\"contains invalid character (= or ;)", key);
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return;
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}
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if (strchr(value, '=') || strchr(value, ';')) {
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//XXX ALOGE("Value \"%s\"contains invalid character (= or ;)", value);
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return;
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}
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// Replacing a value updates the key's order to be the new largest order
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ssize_t res = mMap.replaceValueFor(String8(key), String8(value));
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LOG_ALWAYS_FATAL_IF(res < 0, "replaceValueFor(%s,%s) failed", key, value);
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}
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void CameraParameters2::set(const char *key, int value)
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{
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char str[16];
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sprintf(str, "%d", value);
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set(key, str);
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}
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void CameraParameters2::setFloat(const char *key, float value)
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{
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char str[16]; // 14 should be enough. We overestimate to be safe.
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snprintf(str, sizeof(str), "%g", value);
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set(key, str);
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}
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const char *CameraParameters2::get(const char *key) const
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{
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ssize_t idx = mMap.indexOfKey(String8(key));
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if (idx < 0) {
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return NULL;
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} else {
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return mMap.valueAt(idx).string();
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}
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}
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int CameraParameters2::getInt(const char *key) const
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{
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const char *v = get(key);
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if (v == 0)
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return -1;
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return strtol(v, 0, 0);
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}
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float CameraParameters2::getFloat(const char *key) const
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{
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const char *v = get(key);
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if (v == 0) return -1;
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return strtof(v, 0);
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}
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status_t CameraParameters2::compareSetOrder(const char *key1, const char *key2,
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int *order) const {
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if (key1 == NULL) {
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ALOGE("%s: key1 must not be NULL", __FUNCTION__);
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return BAD_VALUE;
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} else if (key2 == NULL) {
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ALOGE("%s: key2 must not be NULL", __FUNCTION__);
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return BAD_VALUE;
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} else if (order == NULL) {
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ALOGE("%s: order must not be NULL", __FUNCTION__);
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return BAD_VALUE;
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}
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ssize_t index1 = mMap.indexOfKey(String8(key1));
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ssize_t index2 = mMap.indexOfKey(String8(key2));
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if (index1 < 0) {
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ALOGW("%s: Key1 (%s) was not set", __FUNCTION__, key1);
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return NAME_NOT_FOUND;
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} else if (index2 < 0) {
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ALOGW("%s: Key2 (%s) was not set", __FUNCTION__, key2);
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return NAME_NOT_FOUND;
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}
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*order = (index1 == index2) ? 0 :
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(index1 < index2) ? -1 :
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1;
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return OK;
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}
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void CameraParameters2::remove(const char *key)
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{
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mMap.removeItem(String8(key));
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}
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// Parse string like "640x480" or "10000,20000"
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static int parse_pair(const char *str, int *first, int *second, char delim,
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char **endptr = NULL)
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{
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// Find the first integer.
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char *end;
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int w = (int)strtol(str, &end, 10);
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// If a delimeter does not immediately follow, give up.
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if (*end != delim) {
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ALOGE("Cannot find delimeter (%c) in str=%s", delim, str);
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return -1;
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}
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// Find the second integer, immediately after the delimeter.
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int h = (int)strtol(end+1, &end, 10);
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*first = w;
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*second = h;
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if (endptr) {
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*endptr = end;
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}
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return 0;
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}
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static void parseSizesList(const char *sizesStr, Vector<Size> &sizes)
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{
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if (sizesStr == 0) {
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return;
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}
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char *sizeStartPtr = (char *)sizesStr;
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while (true) {
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int width, height;
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int success = parse_pair(sizeStartPtr, &width, &height, 'x',
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&sizeStartPtr);
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if (success == -1 || (*sizeStartPtr != ',' && *sizeStartPtr != '\0')) {
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ALOGE("Picture sizes string \"%s\" contains invalid character.", sizesStr);
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return;
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}
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sizes.push(Size(width, height));
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if (*sizeStartPtr == '\0') {
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return;
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}
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sizeStartPtr++;
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}
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}
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void CameraParameters2::setPreviewSize(int width, int height)
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{
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char str[32];
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sprintf(str, "%dx%d", width, height);
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set(CameraParameters::KEY_PREVIEW_SIZE, str);
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}
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void CameraParameters2::getPreviewSize(int *width, int *height) const
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{
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*width = *height = -1;
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// Get the current string, if it doesn't exist, leave the -1x-1
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const char *p = get(CameraParameters::KEY_PREVIEW_SIZE);
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if (p == 0) return;
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parse_pair(p, width, height, 'x');
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}
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void CameraParameters2::getPreferredPreviewSizeForVideo(int *width, int *height) const
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{
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*width = *height = -1;
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const char *p = get(CameraParameters::KEY_PREFERRED_PREVIEW_SIZE_FOR_VIDEO);
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if (p == 0) return;
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parse_pair(p, width, height, 'x');
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}
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void CameraParameters2::getSupportedPreviewSizes(Vector<Size> &sizes) const
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{
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const char *previewSizesStr = get(CameraParameters::KEY_SUPPORTED_PREVIEW_SIZES);
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parseSizesList(previewSizesStr, sizes);
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}
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void CameraParameters2::setVideoSize(int width, int height)
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{
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char str[32];
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sprintf(str, "%dx%d", width, height);
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set(CameraParameters::KEY_VIDEO_SIZE, str);
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}
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void CameraParameters2::getVideoSize(int *width, int *height) const
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{
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*width = *height = -1;
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const char *p = get(CameraParameters::KEY_VIDEO_SIZE);
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if (p == 0) return;
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parse_pair(p, width, height, 'x');
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}
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void CameraParameters2::getSupportedVideoSizes(Vector<Size> &sizes) const
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{
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const char *videoSizesStr = get(CameraParameters::KEY_SUPPORTED_VIDEO_SIZES);
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parseSizesList(videoSizesStr, sizes);
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}
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void CameraParameters2::setPreviewFrameRate(int fps)
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{
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set(CameraParameters::KEY_PREVIEW_FRAME_RATE, fps);
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}
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int CameraParameters2::getPreviewFrameRate() const
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{
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return getInt(CameraParameters::KEY_PREVIEW_FRAME_RATE);
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}
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void CameraParameters2::getPreviewFpsRange(int *min_fps, int *max_fps) const
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{
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*min_fps = *max_fps = -1;
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const char *p = get(CameraParameters::KEY_PREVIEW_FPS_RANGE);
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if (p == 0) return;
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parse_pair(p, min_fps, max_fps, ',');
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}
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void CameraParameters2::setPreviewFpsRange(int min_fps, int max_fps)
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{
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String8 str = String8::format("%d,%d", min_fps, max_fps);
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set(CameraParameters::KEY_PREVIEW_FPS_RANGE, str.string());
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}
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void CameraParameters2::setPreviewFormat(const char *format)
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{
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set(CameraParameters::KEY_PREVIEW_FORMAT, format);
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}
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const char *CameraParameters2::getPreviewFormat() const
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{
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return get(CameraParameters::KEY_PREVIEW_FORMAT);
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}
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void CameraParameters2::setPictureSize(int width, int height)
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{
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char str[32];
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sprintf(str, "%dx%d", width, height);
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set(CameraParameters::KEY_PICTURE_SIZE, str);
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}
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void CameraParameters2::getPictureSize(int *width, int *height) const
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{
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*width = *height = -1;
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// Get the current string, if it doesn't exist, leave the -1x-1
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const char *p = get(CameraParameters::KEY_PICTURE_SIZE);
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if (p == 0) return;
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parse_pair(p, width, height, 'x');
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}
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void CameraParameters2::getSupportedPictureSizes(Vector<Size> &sizes) const
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{
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const char *pictureSizesStr = get(CameraParameters::KEY_SUPPORTED_PICTURE_SIZES);
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parseSizesList(pictureSizesStr, sizes);
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}
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void CameraParameters2::setPictureFormat(const char *format)
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{
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set(CameraParameters::KEY_PICTURE_FORMAT, format);
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}
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const char *CameraParameters2::getPictureFormat() const
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{
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return get(CameraParameters::KEY_PICTURE_FORMAT);
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}
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void CameraParameters2::dump() const
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{
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ALOGD("dump: mMap.size = %d", mMap.size());
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for (size_t i = 0; i < mMap.size(); i++) {
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String8 k, v;
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k = mMap.keyAt(i);
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v = mMap.valueAt(i);
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ALOGD("%s: %s\n", k.string(), v.string());
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}
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}
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status_t CameraParameters2::dump(int fd, const Vector<String16>& args) const
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{
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(void)args;
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const size_t SIZE = 256;
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char buffer[SIZE];
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String8 result;
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snprintf(buffer, 255, "CameraParameters2::dump: mMap.size = %zu\n", mMap.size());
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result.append(buffer);
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for (size_t i = 0; i < mMap.size(); i++) {
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String8 k, v;
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k = mMap.keyAt(i);
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v = mMap.valueAt(i);
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snprintf(buffer, 255, "\t%s: %s\n", k.string(), v.string());
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result.append(buffer);
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}
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write(fd, result.string(), result.size());
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return NO_ERROR;
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}
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}; // namespace android
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