replicant-frameworks_native/libs/ui/CameraParameters.cpp
2009-03-03 19:31:44 -08:00

274 lines
6.1 KiB
C++

/*
**
** 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 <ui/CameraParameters.h>
namespace android {
static const char* portrait = "portrait";
static const char* landscape = "landscape";
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);
}
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);
}
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("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("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("preview-frame-rate", fps);
}
int CameraParameters::getPreviewFrameRate() const
{
return getInt("preview-frame-rate");
}
void CameraParameters::setPreviewFormat(const char *format)
{
set("preview-format", format);
}
int CameraParameters::getOrientation() const
{
const char* orientation = get("orientation");
if (orientation && !strcmp(orientation, portrait))
return CAMERA_ORIENTATION_PORTRAIT;
return CAMERA_ORIENTATION_LANDSCAPE;
}
void CameraParameters::setOrientation(int orientation)
{
if (orientation == CAMERA_ORIENTATION_PORTRAIT) {
set("preview-format", portrait);
} else {
set("preview-format", landscape);
}
}
const char *CameraParameters::getPreviewFormat() const
{
return get("preview-format");
}
void CameraParameters::setPictureSize(int width, int height)
{
char str[32];
sprintf(str, "%dx%d", width, height);
set("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("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("picture-format", format);
}
const char *CameraParameters::getPictureFormat() const
{
return get("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