/*
 * Copyright (C) 2015 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 "APM::Volumes"
//#define LOG_NDEBUG 0

//#define VERY_VERBOSE_LOGGING
#ifdef VERY_VERBOSE_LOGGING
#define ALOGVV ALOGV
#else
#define ALOGVV(a...) do { } while(0)
#endif

#include "StreamDescriptor.h"
#include <utils/Log.h>
#include <utils/String8.h>

namespace android {

// --- StreamDescriptor class implementation

StreamDescriptor::StreamDescriptor()
    :   mIndexMin(0), mIndexMax(1), mCanBeMuted(true)
{
    // Initialize the current stream's index to mIndexMax so volume isn't 0 in
    // cases where the Java layer doesn't call into the audio policy service to
    // set the default volume.
    mIndexCur.add(AUDIO_DEVICE_OUT_DEFAULT, mIndexMax);
}

int StreamDescriptor::getVolumeIndex(audio_devices_t device) const
{
    device = Volume::getDeviceForVolume(device);
    // there is always a valid entry for AUDIO_DEVICE_OUT_DEFAULT
    if (mIndexCur.indexOfKey(device) < 0) {
        device = AUDIO_DEVICE_OUT_DEFAULT;
    }
    return mIndexCur.valueFor(device);
}

void StreamDescriptor::clearCurrentVolumeIndex()
{
    mIndexCur.clear();
}

void StreamDescriptor::addCurrentVolumeIndex(audio_devices_t device, int index)
{
    mIndexCur.add(device, index);
}

void StreamDescriptor::setVolumeIndexMin(int volIndexMin)
{
    mIndexMin = volIndexMin;
}

void StreamDescriptor::setVolumeIndexMax(int volIndexMax)
{
    mIndexMax = volIndexMax;
}

void StreamDescriptor::setVolumeCurvePoint(Volume::device_category deviceCategory,
                                           const VolumeCurvePoint *point)
{
    mVolumeCurve[deviceCategory] = point;
}

void StreamDescriptor::dump(int fd) const
{
    const size_t SIZE = 256;
    char buffer[SIZE];
    String8 result;

    snprintf(buffer, SIZE, "%s         %02d         %02d         ",
             mCanBeMuted ? "true " : "false", mIndexMin, mIndexMax);
    result.append(buffer);
    for (size_t i = 0; i < mIndexCur.size(); i++) {
        snprintf(buffer, SIZE, "%04x : %02d, ",
                 mIndexCur.keyAt(i),
                 mIndexCur.valueAt(i));
        result.append(buffer);
    }
    result.append("\n");

    write(fd, result.string(), result.size());
}

StreamDescriptorCollection::StreamDescriptorCollection()
{
    for (size_t stream = 0 ; stream < AUDIO_STREAM_CNT; stream++) {
        add(static_cast<audio_stream_type_t>(stream), StreamDescriptor());
    }
}

bool StreamDescriptorCollection::canBeMuted(audio_stream_type_t stream)
{
    return valueAt(stream).canBeMuted();
}

void StreamDescriptorCollection::clearCurrentVolumeIndex(audio_stream_type_t stream)
{
    editValueAt(stream).clearCurrentVolumeIndex();
}

void StreamDescriptorCollection::addCurrentVolumeIndex(audio_stream_type_t stream,
                                                       audio_devices_t device, int index)
{
    editValueAt(stream).addCurrentVolumeIndex(device, index);
}

void StreamDescriptorCollection::setVolumeCurvePoint(audio_stream_type_t stream,
                                                     Volume::device_category deviceCategory,
                                                     const VolumeCurvePoint *point)
{
    editValueAt(stream).setVolumeCurvePoint(deviceCategory, point);
}

const VolumeCurvePoint *StreamDescriptorCollection::getVolumeCurvePoint(audio_stream_type_t stream,
                                                                        Volume::device_category deviceCategory) const
{
    return valueAt(stream).getVolumeCurvePoint(deviceCategory);
}

void StreamDescriptorCollection::setVolumeIndexMin(audio_stream_type_t stream,int volIndexMin)
{
    return editValueAt(stream).setVolumeIndexMin(volIndexMin);
}

void StreamDescriptorCollection::setVolumeIndexMax(audio_stream_type_t stream,int volIndexMax)
{
    return editValueAt(stream).setVolumeIndexMax(volIndexMax);
}

status_t StreamDescriptorCollection::dump(int fd) const
{
    const size_t SIZE = 256;
    char buffer[SIZE];

    snprintf(buffer, SIZE, "\nStreams dump:\n");
    write(fd, buffer, strlen(buffer));
    snprintf(buffer, SIZE,
             " Stream  Can be muted  Index Min  Index Max  Index Cur [device : index]...\n");
    write(fd, buffer, strlen(buffer));
    for (size_t i = 0; i < size(); i++) {
        snprintf(buffer, SIZE, " %02zu      ", i);
        write(fd, buffer, strlen(buffer));
        valueAt(i).dump(fd);
    }

    return NO_ERROR;
}

}; // namespace android