diff options
Diffstat (limited to 'services/audioflinger/AudioMixer.cpp')
-rw-r--r-- | services/audioflinger/AudioMixer.cpp | 212 |
1 files changed, 130 insertions, 82 deletions
diff --git a/services/audioflinger/AudioMixer.cpp b/services/audioflinger/AudioMixer.cpp index f92421e..2d67efb 100644 --- a/services/audioflinger/AudioMixer.cpp +++ b/services/audioflinger/AudioMixer.cpp @@ -58,7 +58,7 @@ AudioMixer::DownmixerBufferProvider::~DownmixerBufferProvider() status_t AudioMixer::DownmixerBufferProvider::getNextBuffer(AudioBufferProvider::Buffer *pBuffer, int64_t pts) { //ALOGV("DownmixerBufferProvider::getNextBuffer()"); - if (this->mTrackBufferProvider != NULL) { + if (mTrackBufferProvider != NULL) { status_t res = mTrackBufferProvider->getNextBuffer(pBuffer, pts); if (res == OK) { mDownmixConfig.inputCfg.buffer.frameCount = pBuffer->frameCount; @@ -81,7 +81,7 @@ status_t AudioMixer::DownmixerBufferProvider::getNextBuffer(AudioBufferProvider: void AudioMixer::DownmixerBufferProvider::releaseBuffer(AudioBufferProvider::Buffer *pBuffer) { //ALOGV("DownmixerBufferProvider::releaseBuffer()"); - if (this->mTrackBufferProvider != NULL) { + if (mTrackBufferProvider != NULL) { mTrackBufferProvider->releaseBuffer(pBuffer); } else { ALOGE("DownmixerBufferProvider::releaseBuffer() error: NULL track buffer provider"); @@ -90,9 +90,9 @@ void AudioMixer::DownmixerBufferProvider::releaseBuffer(AudioBufferProvider::Buf // ---------------------------------------------------------------------------- -bool AudioMixer::isMultichannelCapable = false; +bool AudioMixer::sIsMultichannelCapable = false; -effect_descriptor_t AudioMixer::dwnmFxDesc; +effect_descriptor_t AudioMixer::sDwnmFxDesc; // Ensure mConfiguredNames bitmask is initialized properly on all architectures. // The value of 1 << x is undefined in C when x >= 32. @@ -113,8 +113,6 @@ AudioMixer::AudioMixer(size_t frameCount, uint32_t sampleRate, uint32_t maxNumTr // AudioMixer is not yet capable of multi-channel output beyond stereo ALOG_ASSERT(2 == MAX_NUM_CHANNELS, "bad MAX_NUM_CHANNELS %d", MAX_NUM_CHANNELS); - LocalClock lc; - pthread_once(&sOnceControl, &sInitRoutine); mState.enabledTracks= 0; @@ -136,27 +134,6 @@ AudioMixer::AudioMixer(size_t frameCount, uint32_t sampleRate, uint32_t maxNumTr t++; } - // find multichannel downmix effect if we have to play multichannel content - uint32_t numEffects = 0; - int ret = EffectQueryNumberEffects(&numEffects); - if (ret != 0) { - ALOGE("AudioMixer() error %d querying number of effects", ret); - return; - } - ALOGV("EffectQueryNumberEffects() numEffects=%d", numEffects); - - for (uint32_t i = 0 ; i < numEffects ; i++) { - if (EffectQueryEffect(i, &dwnmFxDesc) == 0) { - ALOGV("effect %d is called %s", i, dwnmFxDesc.name); - if (memcmp(&dwnmFxDesc.type, EFFECT_UIID_DOWNMIX, sizeof(effect_uuid_t)) == 0) { - ALOGI("found effect \"%s\" from %s", - dwnmFxDesc.name, dwnmFxDesc.implementor); - isMultichannelCapable = true; - break; - } - } - } - ALOGE_IF(!isMultichannelCapable, "unable to find downmix effect"); } AudioMixer::~AudioMixer() @@ -216,6 +193,7 @@ int AudioMixer::getTrackName(audio_channel_mask_t channelMask, int sessionId) t->mainBuffer = NULL; t->auxBuffer = NULL; t->downmixerBufferProvider = NULL; + t->mMixerFormat = AUDIO_FORMAT_PCM_16_BIT; status_t status = initTrackDownmix(&mState.tracks[n], n, channelMask); if (status == OK) { @@ -229,7 +207,7 @@ int AudioMixer::getTrackName(audio_channel_mask_t channelMask, int sessionId) void AudioMixer::invalidateState(uint32_t mask) { - if (mask) { + if (mask != 0) { mState.needsChanged |= mask; mState.hook = process__validate; } @@ -252,7 +230,7 @@ status_t AudioMixer::initTrackDownmix(track_t* pTrack, int trackNum, audio_chann return status; } -void AudioMixer::unprepareTrackForDownmix(track_t* pTrack, int trackName) { +void AudioMixer::unprepareTrackForDownmix(track_t* pTrack, int trackName __unused) { ALOGV("AudioMixer::unprepareTrackForDownmix(%d)", trackName); if (pTrack->downmixerBufferProvider != NULL) { @@ -276,13 +254,13 @@ status_t AudioMixer::prepareTrackForDownmix(track_t* pTrack, int trackName) DownmixerBufferProvider* pDbp = new DownmixerBufferProvider(); int32_t status; - if (!isMultichannelCapable) { + if (!sIsMultichannelCapable) { ALOGE("prepareTrackForDownmix(%d) fails: mixer doesn't support multichannel content", trackName); goto noDownmixForActiveTrack; } - if (EffectCreate(&dwnmFxDesc.uuid, + if (EffectCreate(&sDwnmFxDesc.uuid, pTrack->sessionId /*sessionId*/, -2 /*ioId not relevant here, using random value*/, &pDbp->mDownmixHandle/*pHandle*/) != 0) { ALOGE("prepareTrackForDownmix(%d) fails: error creating downmixer effect", trackName); @@ -463,8 +441,15 @@ void AudioMixer::setParameter(int name, int target, int param, void *value) // for a specific track? or per mixer? /* case DOWNMIX_TYPE: break */ + case MIXER_FORMAT: { + audio_format_t format = static_cast<audio_format_t>(valueInt); + if (track.mMixerFormat != format) { + track.mMixerFormat = format; + ALOGV("setParameter(TRACK, MIXER_FORMAT, %#x)", format); + } + } break; default: - LOG_FATAL("bad param"); + LOG_ALWAYS_FATAL("setParameter track: bad param %d", param); } break; @@ -489,7 +474,7 @@ void AudioMixer::setParameter(int name, int target, int param, void *value) invalidateState(1 << name); break; default: - LOG_FATAL("bad param"); + LOG_ALWAYS_FATAL("setParameter resample: bad param %d", param); } break; @@ -537,12 +522,12 @@ void AudioMixer::setParameter(int name, int target, int param, void *value) } break; default: - LOG_FATAL("bad param"); + LOG_ALWAYS_FATAL("setParameter volume: bad param %d", param); } break; default: - LOG_FATAL("bad target"); + LOG_ALWAYS_FATAL("setParameter: bad target %d", target); } } @@ -560,14 +545,14 @@ bool AudioMixer::track_t::setResampler(uint32_t value, uint32_t devSampleRate) // Should have a way to distinguish tracks with static ratios vs. dynamic ratios. if (!((value == 44100 && devSampleRate == 48000) || (value == 48000 && devSampleRate == 44100))) { - quality = AudioResampler::LOW_QUALITY; + quality = AudioResampler::DYN_LOW_QUALITY; } else { quality = AudioResampler::DEFAULT_QUALITY; } resampler = AudioResampler::create( format, // the resampler sees the number of channels after the downmixer, if any - downmixerBufferProvider != NULL ? MAX_NUM_CHANNELS : channelCount, + (int) (downmixerBufferProvider != NULL ? MAX_NUM_CHANNELS : channelCount), devSampleRate, quality); resampler->setLocalTimeFreq(sLocalTimeFreq); } @@ -668,27 +653,29 @@ void AudioMixer::process__validate(state_t* state, int64_t pts) countActiveTracks++; track_t& t = state->tracks[i]; uint32_t n = 0; + // FIXME can overflow (mask is only 3 bits) n |= NEEDS_CHANNEL_1 + t.channelCount - 1; - n |= NEEDS_FORMAT_16; - n |= t.doesResample() ? NEEDS_RESAMPLE_ENABLED : NEEDS_RESAMPLE_DISABLED; + if (t.doesResample()) { + n |= NEEDS_RESAMPLE; + } if (t.auxLevel != 0 && t.auxBuffer != NULL) { - n |= NEEDS_AUX_ENABLED; + n |= NEEDS_AUX; } if (t.volumeInc[0]|t.volumeInc[1]) { volumeRamp = true; } else if (!t.doesResample() && t.volumeRL == 0) { - n |= NEEDS_MUTE_ENABLED; + n |= NEEDS_MUTE; } t.needs = n; - if ((n & NEEDS_MUTE__MASK) == NEEDS_MUTE_ENABLED) { + if (n & NEEDS_MUTE) { t.hook = track__nop; } else { - if ((n & NEEDS_AUX__MASK) == NEEDS_AUX_ENABLED) { + if (n & NEEDS_AUX) { all16BitsStereoNoResample = false; } - if ((n & NEEDS_RESAMPLE__MASK) == NEEDS_RESAMPLE_ENABLED) { + if (n & NEEDS_RESAMPLE) { all16BitsStereoNoResample = false; resampling = true; t.hook = track__genericResample; @@ -710,7 +697,7 @@ void AudioMixer::process__validate(state_t* state, int64_t pts) // select the processing hooks state->hook = process__nop; - if (countActiveTracks) { + if (countActiveTracks > 0) { if (resampling) { if (!state->outputTemp) { state->outputTemp = new int32_t[MAX_NUM_CHANNELS * state->frameCount]; @@ -746,16 +733,15 @@ void AudioMixer::process__validate(state_t* state, int64_t pts) // Now that the volume ramp has been done, set optimal state and // track hooks for subsequent mixer process - if (countActiveTracks) { + if (countActiveTracks > 0) { bool allMuted = true; uint32_t en = state->enabledTracks; while (en) { const int i = 31 - __builtin_clz(en); en &= ~(1<<i); track_t& t = state->tracks[i]; - if (!t.doesResample() && t.volumeRL == 0) - { - t.needs |= NEEDS_MUTE_ENABLED; + if (!t.doesResample() && t.volumeRL == 0) { + t.needs |= NEEDS_MUTE; t.hook = track__nop; } else { allMuted = false; @@ -806,8 +792,8 @@ void AudioMixer::track__genericResample(track_t* t, int32_t* out, size_t outFram } } -void AudioMixer::track__nop(track_t* t, int32_t* out, size_t outFrameCount, int32_t* temp, - int32_t* aux) +void AudioMixer::track__nop(track_t* t __unused, int32_t* out __unused, + size_t outFrameCount __unused, int32_t* temp __unused, int32_t* aux __unused) { } @@ -883,8 +869,8 @@ void AudioMixer::volumeStereo(track_t* t, int32_t* out, size_t frameCount, int32 } } -void AudioMixer::track__16BitsStereo(track_t* t, int32_t* out, size_t frameCount, int32_t* temp, - int32_t* aux) +void AudioMixer::track__16BitsStereo(track_t* t, int32_t* out, size_t frameCount, + int32_t* temp __unused, int32_t* aux) { const int16_t *in = static_cast<const int16_t *>(t->in); @@ -974,8 +960,8 @@ void AudioMixer::track__16BitsStereo(track_t* t, int32_t* out, size_t frameCount t->in = in; } -void AudioMixer::track__16BitsMono(track_t* t, int32_t* out, size_t frameCount, int32_t* temp, - int32_t* aux) +void AudioMixer::track__16BitsMono(track_t* t, int32_t* out, size_t frameCount, + int32_t* temp __unused, int32_t* aux) { const int16_t *in = static_cast<int16_t const *>(t->in); @@ -1065,7 +1051,7 @@ void AudioMixer::track__16BitsMono(track_t* t, int32_t* out, size_t frameCount, void AudioMixer::process__nop(state_t* state, int64_t pts) { uint32_t e0 = state->enabledTracks; - size_t bufSize = state->frameCount * sizeof(int16_t) * MAX_NUM_CHANNELS; + size_t sampleCount = state->frameCount * MAX_NUM_CHANNELS; while (e0) { // process by group of tracks with same output buffer to // avoid multiple memset() on same buffer @@ -1084,7 +1070,8 @@ void AudioMixer::process__nop(state_t* state, int64_t pts) } e0 &= ~(e1); - memset(t1.mainBuffer, 0, bufSize); + memset(t1.mainBuffer, 0, sampleCount + * audio_bytes_per_sample(t1.mMixerFormat)); } while (e1) { @@ -1154,7 +1141,7 @@ void AudioMixer::process__genericNoResampling(state_t* state, int64_t pts) track_t& t = state->tracks[i]; size_t outFrames = BLOCKSIZE; int32_t *aux = NULL; - if (CC_UNLIKELY((t.needs & NEEDS_AUX__MASK) == NEEDS_AUX_ENABLED)) { + if (CC_UNLIKELY(t.needs & NEEDS_AUX)) { aux = t.auxBuffer + numFrames; } while (outFrames) { @@ -1166,7 +1153,7 @@ void AudioMixer::process__genericNoResampling(state_t* state, int64_t pts) break; } size_t inFrames = (t.frameCount > outFrames)?outFrames:t.frameCount; - if (inFrames) { + if (inFrames > 0) { t.hook(&t, outTemp + (BLOCKSIZE-outFrames)*MAX_NUM_CHANNELS, inFrames, state->resampleTemp, aux); t.frameCount -= inFrames; @@ -1192,8 +1179,18 @@ void AudioMixer::process__genericNoResampling(state_t* state, int64_t pts) } } } - ditherAndClamp(out, outTemp, BLOCKSIZE); - out += BLOCKSIZE; + switch (t1.mMixerFormat) { + case AUDIO_FORMAT_PCM_FLOAT: + memcpy_to_float_from_q4_27(reinterpret_cast<float *>(out), outTemp, BLOCKSIZE * 2); + out += BLOCKSIZE * 2; // output is 2 floats/frame. + break; + case AUDIO_FORMAT_PCM_16_BIT: + ditherAndClamp(out, outTemp, BLOCKSIZE); + out += BLOCKSIZE; // output is 1 int32_t (2 int16_t samples)/frame + break; + default: + LOG_ALWAYS_FATAL("bad mixer format: %d", t1.mMixerFormat); + } numFrames += BLOCKSIZE; } while (numFrames < state->frameCount); } @@ -1242,14 +1239,14 @@ void AudioMixer::process__genericResampling(state_t* state, int64_t pts) e1 &= ~(1<<i); track_t& t = state->tracks[i]; int32_t *aux = NULL; - if (CC_UNLIKELY((t.needs & NEEDS_AUX__MASK) == NEEDS_AUX_ENABLED)) { + if (CC_UNLIKELY(t.needs & NEEDS_AUX)) { aux = t.auxBuffer; } // this is a little goofy, on the resampling case we don't // acquire/release the buffers because it's done by // the resampler. - if ((t.needs & NEEDS_RESAMPLE__MASK) == NEEDS_RESAMPLE_ENABLED) { + if (t.needs & NEEDS_RESAMPLE) { t.resampler->setPTS(pts); t.hook(&t, outTemp, numFrames, state->resampleTemp, aux); } else { @@ -1275,7 +1272,16 @@ void AudioMixer::process__genericResampling(state_t* state, int64_t pts) } } } - ditherAndClamp(out, outTemp, numFrames); + switch (t1.mMixerFormat) { + case AUDIO_FORMAT_PCM_FLOAT: + memcpy_to_float_from_q4_27(reinterpret_cast<float*>(out), outTemp, numFrames*2); + break; + case AUDIO_FORMAT_PCM_16_BIT: + ditherAndClamp(out, outTemp, numFrames); + break; + default: + LOG_ALWAYS_FATAL("bad mixer format: %d", t1.mMixerFormat); + } } } @@ -1316,27 +1322,46 @@ void AudioMixer::process__OneTrack16BitsStereoNoResampling(state_t* state, } size_t outFrames = b.frameCount; - if (CC_UNLIKELY(uint32_t(vl) > UNITY_GAIN || uint32_t(vr) > UNITY_GAIN)) { - // volume is boosted, so we might need to clamp even though - // we process only one track. - do { - uint32_t rl = *reinterpret_cast<const uint32_t *>(in); - in += 2; - int32_t l = mulRL(1, rl, vrl) >> 12; - int32_t r = mulRL(0, rl, vrl) >> 12; - // clamping... - l = clamp16(l); - r = clamp16(r); - *out++ = (r<<16) | (l & 0xFFFF); - } while (--outFrames); - } else { + switch (t.mMixerFormat) { + case AUDIO_FORMAT_PCM_FLOAT: { + float *fout = reinterpret_cast<float*>(out); do { uint32_t rl = *reinterpret_cast<const uint32_t *>(in); in += 2; - int32_t l = mulRL(1, rl, vrl) >> 12; - int32_t r = mulRL(0, rl, vrl) >> 12; - *out++ = (r<<16) | (l & 0xFFFF); + int32_t l = mulRL(1, rl, vrl); + int32_t r = mulRL(0, rl, vrl); + *fout++ = float_from_q4_27(l); + *fout++ = float_from_q4_27(r); + // Note: In case of later int16_t sink output, + // conversion and clamping is done by memcpy_to_i16_from_float(). } while (--outFrames); + } break; + case AUDIO_FORMAT_PCM_16_BIT: + if (CC_UNLIKELY(uint32_t(vl) > UNITY_GAIN || uint32_t(vr) > UNITY_GAIN)) { + // volume is boosted, so we might need to clamp even though + // we process only one track. + do { + uint32_t rl = *reinterpret_cast<const uint32_t *>(in); + in += 2; + int32_t l = mulRL(1, rl, vrl) >> 12; + int32_t r = mulRL(0, rl, vrl) >> 12; + // clamping... + l = clamp16(l); + r = clamp16(r); + *out++ = (r<<16) | (l & 0xFFFF); + } while (--outFrames); + } else { + do { + uint32_t rl = *reinterpret_cast<const uint32_t *>(in); + in += 2; + int32_t l = mulRL(1, rl, vrl) >> 12; + int32_t r = mulRL(0, rl, vrl) >> 12; + *out++ = (r<<16) | (l & 0xFFFF); + } while (--outFrames); + } + break; + default: + LOG_ALWAYS_FATAL("bad mixer format: %d", t.mMixerFormat); } numFrames -= b.frameCount; t.bufferProvider->releaseBuffer(&b); @@ -1449,8 +1474,9 @@ void AudioMixer::process__TwoTracks16BitsStereoNoResampling(state_t* state, int64_t AudioMixer::calculateOutputPTS(const track_t& t, int64_t basePTS, int outputFrameIndex) { - if (AudioBufferProvider::kInvalidPTS == basePTS) + if (AudioBufferProvider::kInvalidPTS == basePTS) { return AudioBufferProvider::kInvalidPTS; + } return basePTS + ((outputFrameIndex * sLocalTimeFreq) / t.sampleRate); } @@ -1462,6 +1488,28 @@ int64_t AudioMixer::calculateOutputPTS(const track_t& t, int64_t basePTS, { LocalClock lc; sLocalTimeFreq = lc.getLocalFreq(); + + // find multichannel downmix effect if we have to play multichannel content + uint32_t numEffects = 0; + int ret = EffectQueryNumberEffects(&numEffects); + if (ret != 0) { + ALOGE("AudioMixer() error %d querying number of effects", ret); + return; + } + ALOGV("EffectQueryNumberEffects() numEffects=%d", numEffects); + + for (uint32_t i = 0 ; i < numEffects ; i++) { + if (EffectQueryEffect(i, &sDwnmFxDesc) == 0) { + ALOGV("effect %d is called %s", i, sDwnmFxDesc.name); + if (memcmp(&sDwnmFxDesc.type, EFFECT_UIID_DOWNMIX, sizeof(effect_uuid_t)) == 0) { + ALOGI("found effect \"%s\" from %s", + sDwnmFxDesc.name, sDwnmFxDesc.implementor); + sIsMultichannelCapable = true; + break; + } + } + } + ALOGW_IF(!sIsMultichannelCapable, "unable to find downmix effect"); } // ---------------------------------------------------------------------------- |