1/*
2 * Copyright (C) 2012 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include <cutils/properties.h>
18#include "FastMixerState.h"
19
20namespace android {
21
22FastTrack::FastTrack() :
23    mBufferProvider(NULL), mVolumeProvider(NULL),
24    mChannelMask(AUDIO_CHANNEL_OUT_STEREO), mFormat(AUDIO_FORMAT_INVALID), mGeneration(0)
25{
26}
27
28FastTrack::~FastTrack()
29{
30}
31
32FastMixerState::FastMixerState() : FastThreadState(),
33    // mFastTracks
34    mFastTracksGen(0), mTrackMask(0), mOutputSink(NULL), mOutputSinkGen(0),
35    mFrameCount(0), mTeeSink(NULL)
36{
37    int ok = pthread_once(&sMaxFastTracksOnce, sMaxFastTracksInit);
38    if (ok != 0) {
39        ALOGE("%s pthread_once failed: %d", __func__, ok);
40    }
41}
42
43FastMixerState::~FastMixerState()
44{
45}
46
47// static
48unsigned FastMixerState::sMaxFastTracks = kDefaultFastTracks;
49
50// static
51pthread_once_t FastMixerState::sMaxFastTracksOnce = PTHREAD_ONCE_INIT;
52
53// static
54const char *FastMixerState::commandToString(Command command)
55{
56    const char *str = FastThreadState::commandToString(command);
57    if (str != NULL) {
58        return str;
59    }
60    switch (command) {
61    case FastMixerState::MIX:       return "MIX";
62    case FastMixerState::WRITE:     return "WRITE";
63    case FastMixerState::MIX_WRITE: return "MIX_WRITE";
64    }
65    LOG_ALWAYS_FATAL("%s", __func__);
66}
67
68// static
69void FastMixerState::sMaxFastTracksInit()
70{
71    char value[PROPERTY_VALUE_MAX];
72    if (property_get("ro.audio.max_fast_tracks", value, NULL) > 0) {
73        char *endptr;
74        unsigned long ul = strtoul(value, &endptr, 0);
75        if (*endptr == '\0' && kMinFastTracks <= ul && ul <= kMaxFastTracks) {
76            sMaxFastTracks = (unsigned) ul;
77        }
78    }
79    ALOGI("sMaxFastTracks = %u", sMaxFastTracks);
80}
81
82}   // namespace android
83