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
20 namespace android {
21
FastTrack()22 FastTrack::FastTrack() :
23 mBufferProvider(NULL), mVolumeProvider(NULL),
24 mChannelMask(AUDIO_CHANNEL_OUT_STEREO), mFormat(AUDIO_FORMAT_INVALID), mGeneration(0)
25 {
26 }
27
~FastTrack()28 FastTrack::~FastTrack()
29 {
30 }
31
FastMixerState()32 FastMixerState::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
~FastMixerState()43 FastMixerState::~FastMixerState()
44 {
45 }
46
47 // static
48 unsigned FastMixerState::sMaxFastTracks = kDefaultFastTracks;
49
50 // static
51 pthread_once_t FastMixerState::sMaxFastTracksOnce = PTHREAD_ONCE_INIT;
52
53 // static
commandToString(Command command)54 const 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
sMaxFastTracksInit()69 void 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