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 #define LOG_TAG "FastMixerState"
18 //#define LOG_NDEBUG 0
19
20 #include <cutils/properties.h>
21 #include "FastMixerState.h"
22
23 namespace android {
24
FastTrack()25 FastTrack::FastTrack() :
26 mBufferProvider(NULL), mVolumeProvider(NULL),
27 mChannelMask(AUDIO_CHANNEL_OUT_STEREO), mFormat(AUDIO_FORMAT_INVALID), mGeneration(0)
28 {
29 }
30
~FastTrack()31 FastTrack::~FastTrack()
32 {
33 }
34
FastMixerState()35 FastMixerState::FastMixerState() : FastThreadState(),
36 // mFastTracks
37 mFastTracksGen(0), mTrackMask(0), mOutputSink(NULL), mOutputSinkGen(0),
38 mFrameCount(0)
39 {
40 int ok = pthread_once(&sMaxFastTracksOnce, sMaxFastTracksInit);
41 if (ok != 0) {
42 ALOGE("%s pthread_once failed: %d", __func__, ok);
43 }
44 }
45
~FastMixerState()46 FastMixerState::~FastMixerState()
47 {
48 }
49
50 // static
51 unsigned FastMixerState::sMaxFastTracks = kDefaultFastTracks;
52
53 // static
54 pthread_once_t FastMixerState::sMaxFastTracksOnce = PTHREAD_ONCE_INIT;
55
56 // static
commandToString(Command command)57 const char *FastMixerState::commandToString(Command command)
58 {
59 const char *str = FastThreadState::commandToString(command);
60 if (str != NULL) {
61 return str;
62 }
63 switch (command) {
64 case FastMixerState::MIX: return "MIX";
65 case FastMixerState::WRITE: return "WRITE";
66 case FastMixerState::MIX_WRITE: return "MIX_WRITE";
67 }
68 LOG_ALWAYS_FATAL("%s", __func__);
69 }
70
71 // static
sMaxFastTracksInit()72 void FastMixerState::sMaxFastTracksInit()
73 {
74 char value[PROPERTY_VALUE_MAX];
75 if (property_get("ro.audio.max_fast_tracks", value, NULL) > 0) {
76 char *endptr;
77 unsigned long ul = strtoul(value, &endptr, 0);
78 if (*endptr == '\0' && kMinFastTracks <= ul && ul <= kMaxFastTracks) {
79 sMaxFastTracks = (unsigned) ul;
80 }
81 }
82 ALOGI("sMaxFastTracks = %u", sMaxFastTracks);
83 }
84
85 } // namespace android
86