libmedia: move AudioParameter out of AudioSystem
Change-Id: I9eb7e002d141936258050d4fa4f0ccd8202bfc54
Signed-off-by: Dima Zavin <dima@android.com>
diff --git a/media/libmedia/AudioParameter.cpp b/media/libmedia/AudioParameter.cpp
new file mode 100644
index 0000000..59ccfd0
--- /dev/null
+++ b/media/libmedia/AudioParameter.cpp
@@ -0,0 +1,179 @@
+/*
+ * Copyright (C) 2006-2011 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 "AudioParameter"
+//#define LOG_NDEBUG 0
+
+#include <utils/Log.h>
+
+#include <media/AudioParameter.h>
+
+namespace android {
+
+const char *AudioParameter::keyRouting = "routing";
+const char *AudioParameter::keySamplingRate = "sampling_rate";
+const char *AudioParameter::keyFormat = "format";
+const char *AudioParameter::keyChannels = "channels";
+const char *AudioParameter::keyFrameCount = "frame_count";
+const char *AudioParameter::keyInputSource = "input_source";
+
+AudioParameter::AudioParameter(const String8& keyValuePairs)
+{
+ char *str = new char[keyValuePairs.length()+1];
+ mKeyValuePairs = keyValuePairs;
+
+ strcpy(str, keyValuePairs.string());
+ char *pair = strtok(str, ";");
+ while (pair != NULL) {
+ if (strlen(pair) != 0) {
+ size_t eqIdx = strcspn(pair, "=");
+ String8 key = String8(pair, eqIdx);
+ String8 value;
+ if (eqIdx == strlen(pair)) {
+ value = String8("");
+ } else {
+ value = String8(pair + eqIdx + 1);
+ }
+ if (mParameters.indexOfKey(key) < 0) {
+ mParameters.add(key, value);
+ } else {
+ mParameters.replaceValueFor(key, value);
+ }
+ } else {
+ LOGV("AudioParameter() cstor empty key value pair");
+ }
+ pair = strtok(NULL, ";");
+ }
+
+ delete[] str;
+}
+
+AudioParameter::~AudioParameter()
+{
+ mParameters.clear();
+}
+
+String8 AudioParameter::toString()
+{
+ String8 str = String8("");
+
+ size_t size = mParameters.size();
+ for (size_t i = 0; i < size; i++) {
+ str += mParameters.keyAt(i);
+ str += "=";
+ str += mParameters.valueAt(i);
+ if (i < (size - 1)) str += ";";
+ }
+ return str;
+}
+
+status_t AudioParameter::add(const String8& key, const String8& value)
+{
+ if (mParameters.indexOfKey(key) < 0) {
+ mParameters.add(key, value);
+ return NO_ERROR;
+ } else {
+ mParameters.replaceValueFor(key, value);
+ return ALREADY_EXISTS;
+ }
+}
+
+status_t AudioParameter::addInt(const String8& key, const int value)
+{
+ char str[12];
+ if (snprintf(str, 12, "%d", value) > 0) {
+ String8 str8 = String8(str);
+ return add(key, str8);
+ } else {
+ return BAD_VALUE;
+ }
+}
+
+status_t AudioParameter::addFloat(const String8& key, const float value)
+{
+ char str[23];
+ if (snprintf(str, 23, "%.10f", value) > 0) {
+ String8 str8 = String8(str);
+ return add(key, str8);
+ } else {
+ return BAD_VALUE;
+ }
+}
+
+status_t AudioParameter::remove(const String8& key)
+{
+ if (mParameters.indexOfKey(key) >= 0) {
+ mParameters.removeItem(key);
+ return NO_ERROR;
+ } else {
+ return BAD_VALUE;
+ }
+}
+
+status_t AudioParameter::get(const String8& key, String8& value)
+{
+ if (mParameters.indexOfKey(key) >= 0) {
+ value = mParameters.valueFor(key);
+ return NO_ERROR;
+ } else {
+ return BAD_VALUE;
+ }
+}
+
+status_t AudioParameter::getInt(const String8& key, int& value)
+{
+ String8 str8;
+ status_t result = get(key, str8);
+ value = 0;
+ if (result == NO_ERROR) {
+ int val;
+ if (sscanf(str8.string(), "%d", &val) == 1) {
+ value = val;
+ } else {
+ result = INVALID_OPERATION;
+ }
+ }
+ return result;
+}
+
+status_t AudioParameter::getFloat(const String8& key, float& value)
+{
+ String8 str8;
+ status_t result = get(key, str8);
+ value = 0;
+ if (result == NO_ERROR) {
+ float val;
+ if (sscanf(str8.string(), "%f", &val) == 1) {
+ value = val;
+ } else {
+ result = INVALID_OPERATION;
+ }
+ }
+ return result;
+}
+
+status_t AudioParameter::getAt(size_t index, String8& key, String8& value)
+{
+ if (mParameters.size() > index) {
+ key = mParameters.keyAt(index);
+ value = mParameters.valueAt(index);
+ return NO_ERROR;
+ } else {
+ return BAD_VALUE;
+ }
+}
+
+}; // namespace android