| /* |
| * Copyright (C) 2012 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 "FastMixerState" |
| //#define LOG_NDEBUG 0 |
| |
| #include <cutils/properties.h> |
| #include "FastMixerState.h" |
| |
| namespace android { |
| |
| FastTrack::FastTrack() : |
| mBufferProvider(NULL), mVolumeProvider(NULL), |
| mChannelMask(AUDIO_CHANNEL_OUT_STEREO), mFormat(AUDIO_FORMAT_INVALID), mGeneration(0) |
| { |
| } |
| |
| FastTrack::~FastTrack() |
| { |
| } |
| |
| FastMixerState::FastMixerState() : FastThreadState(), |
| // mFastTracks |
| mFastTracksGen(0), mTrackMask(0), mOutputSink(NULL), mOutputSinkGen(0), |
| mFrameCount(0) |
| { |
| int ok = pthread_once(&sMaxFastTracksOnce, sMaxFastTracksInit); |
| if (ok != 0) { |
| ALOGE("%s pthread_once failed: %d", __func__, ok); |
| } |
| } |
| |
| FastMixerState::~FastMixerState() |
| { |
| } |
| |
| // static |
| unsigned FastMixerState::sMaxFastTracks = kDefaultFastTracks; |
| |
| // static |
| pthread_once_t FastMixerState::sMaxFastTracksOnce = PTHREAD_ONCE_INIT; |
| |
| // static |
| const char *FastMixerState::commandToString(Command command) |
| { |
| const char *str = FastThreadState::commandToString(command); |
| if (str != NULL) { |
| return str; |
| } |
| switch (command) { |
| case FastMixerState::MIX: return "MIX"; |
| case FastMixerState::WRITE: return "WRITE"; |
| case FastMixerState::MIX_WRITE: return "MIX_WRITE"; |
| } |
| LOG_ALWAYS_FATAL("%s", __func__); |
| } |
| |
| // static |
| void FastMixerState::sMaxFastTracksInit() |
| { |
| char value[PROPERTY_VALUE_MAX]; |
| if (property_get("ro.audio.max_fast_tracks", value, NULL) > 0) { |
| char *endptr; |
| unsigned long ul = strtoul(value, &endptr, 0); |
| if (*endptr == '\0' && kMinFastTracks <= ul && ul <= kMaxFastTracks) { |
| sMaxFastTracks = (unsigned) ul; |
| } |
| } |
| ALOGI("sMaxFastTracks = %u", sMaxFastTracks); |
| } |
| |
| } // namespace android |