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318 lines
10 KiB
318 lines
10 KiB
/*
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**
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** Copyright 2007, The Android Open Source Project
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**
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** Licensed under the Apache License, Version 2.0 (the "License");
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** you may not use this file except in compliance with the License.
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** You may obtain a copy of the License at
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**
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** http://www.apache.org/licenses/LICENSE-2.0
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**
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** Unless required by applicable law or agreed to in writing, software
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** distributed under the License is distributed on an "AS IS" BASIS,
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** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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** See the License for the specific language governing permissions and
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** limitations under the License.
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*/
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#define LOG_TAG "IAudioTrack"
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//#define LOG_NDEBUG 0
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#include <utils/Log.h>
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#include <stdint.h>
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#include <sys/types.h>
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#include <binder/Parcel.h>
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#include <media/IAudioTrack.h>
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namespace android {
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using media::VolumeShaper;
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enum {
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GET_CBLK = IBinder::FIRST_CALL_TRANSACTION,
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START,
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STOP,
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FLUSH,
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RESERVED, // was MUTE
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PAUSE,
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ATTACH_AUX_EFFECT,
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SET_PARAMETERS,
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SELECT_PRESENTATION,
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GET_TIMESTAMP,
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SIGNAL,
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APPLY_VOLUME_SHAPER,
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GET_VOLUME_SHAPER_STATE,
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};
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class BpAudioTrack : public BpInterface<IAudioTrack>
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{
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public:
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explicit BpAudioTrack(const sp<IBinder>& impl)
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: BpInterface<IAudioTrack>(impl)
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{
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}
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virtual sp<IMemory> getCblk() const
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{
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Parcel data, reply;
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sp<IMemory> cblk;
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data.writeInterfaceToken(IAudioTrack::getInterfaceDescriptor());
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status_t status = remote()->transact(GET_CBLK, data, &reply);
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if (status == NO_ERROR) {
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cblk = interface_cast<IMemory>(reply.readStrongBinder());
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if (cblk != 0 && cblk->unsecurePointer() == NULL) {
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cblk.clear();
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}
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}
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return cblk;
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}
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virtual status_t start()
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{
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Parcel data, reply;
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data.writeInterfaceToken(IAudioTrack::getInterfaceDescriptor());
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status_t status = remote()->transact(START, data, &reply);
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if (status == NO_ERROR) {
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status = reply.readInt32();
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} else {
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ALOGW("start() error: %s", strerror(-status));
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}
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return status;
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}
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virtual void stop()
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{
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Parcel data, reply;
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data.writeInterfaceToken(IAudioTrack::getInterfaceDescriptor());
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remote()->transact(STOP, data, &reply);
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}
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virtual void flush()
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{
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Parcel data, reply;
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data.writeInterfaceToken(IAudioTrack::getInterfaceDescriptor());
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remote()->transact(FLUSH, data, &reply);
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}
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virtual void pause()
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{
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Parcel data, reply;
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data.writeInterfaceToken(IAudioTrack::getInterfaceDescriptor());
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remote()->transact(PAUSE, data, &reply);
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}
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virtual status_t attachAuxEffect(int effectId)
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{
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Parcel data, reply;
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data.writeInterfaceToken(IAudioTrack::getInterfaceDescriptor());
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data.writeInt32(effectId);
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status_t status = remote()->transact(ATTACH_AUX_EFFECT, data, &reply);
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if (status == NO_ERROR) {
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status = reply.readInt32();
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} else {
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ALOGW("attachAuxEffect() error: %s", strerror(-status));
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}
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return status;
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}
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virtual status_t setParameters(const String8& keyValuePairs) {
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Parcel data, reply;
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data.writeInterfaceToken(IAudioTrack::getInterfaceDescriptor());
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data.writeString8(keyValuePairs);
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status_t status = remote()->transact(SET_PARAMETERS, data, &reply);
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if (status == NO_ERROR) {
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status = reply.readInt32();
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}
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return status;
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}
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/* Selects the presentation (if available) */
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virtual status_t selectPresentation(int presentationId, int programId) {
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Parcel data, reply;
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data.writeInterfaceToken(IAudioTrack::getInterfaceDescriptor());
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data.writeInt32(presentationId);
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data.writeInt32(programId);
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status_t status = remote()->transact(SELECT_PRESENTATION, data, &reply);
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if (status == NO_ERROR) {
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status = reply.readInt32();
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}
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return status;
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}
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virtual status_t getTimestamp(AudioTimestamp& timestamp) {
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Parcel data, reply;
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data.writeInterfaceToken(IAudioTrack::getInterfaceDescriptor());
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status_t status = remote()->transact(GET_TIMESTAMP, data, &reply);
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if (status == NO_ERROR) {
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status = reply.readInt32();
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if (status == NO_ERROR) {
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timestamp.mPosition = reply.readInt32();
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timestamp.mTime.tv_sec = reply.readInt32();
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timestamp.mTime.tv_nsec = reply.readInt32();
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}
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}
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return status;
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}
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virtual void signal() {
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Parcel data, reply;
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data.writeInterfaceToken(IAudioTrack::getInterfaceDescriptor());
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remote()->transact(SIGNAL, data, &reply);
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}
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virtual VolumeShaper::Status applyVolumeShaper(
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const sp<VolumeShaper::Configuration>& configuration,
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const sp<VolumeShaper::Operation>& operation) {
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Parcel data, reply;
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data.writeInterfaceToken(IAudioTrack::getInterfaceDescriptor());
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status_t status = configuration.get() == nullptr
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? data.writeInt32(0)
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: data.writeInt32(1)
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?: configuration->writeToParcel(&data);
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if (status != NO_ERROR) {
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return VolumeShaper::Status(status);
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}
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status = operation.get() == nullptr
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? status = data.writeInt32(0)
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: data.writeInt32(1)
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?: operation->writeToParcel(&data);
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if (status != NO_ERROR) {
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return VolumeShaper::Status(status);
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}
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int32_t remoteVolumeShaperStatus;
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status = remote()->transact(APPLY_VOLUME_SHAPER, data, &reply)
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?: reply.readInt32(&remoteVolumeShaperStatus);
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return VolumeShaper::Status(status ?: remoteVolumeShaperStatus);
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}
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virtual sp<VolumeShaper::State> getVolumeShaperState(int id) {
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Parcel data, reply;
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data.writeInterfaceToken(IAudioTrack::getInterfaceDescriptor());
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data.writeInt32(id);
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status_t status = remote()->transact(GET_VOLUME_SHAPER_STATE, data, &reply);
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if (status != NO_ERROR) {
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return nullptr;
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}
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sp<VolumeShaper::State> state = new VolumeShaper::State;
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status = state->readFromParcel(&reply);
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if (status != NO_ERROR) {
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return nullptr;
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}
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return state;
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}
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};
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IMPLEMENT_META_INTERFACE(AudioTrack, "android.media.IAudioTrack");
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// ----------------------------------------------------------------------
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status_t BnAudioTrack::onTransact(
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uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
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{
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switch (code) {
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case GET_CBLK: {
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CHECK_INTERFACE(IAudioTrack, data, reply);
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reply->writeStrongBinder(IInterface::asBinder(getCblk()));
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return NO_ERROR;
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} break;
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case START: {
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CHECK_INTERFACE(IAudioTrack, data, reply);
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reply->writeInt32(start());
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return NO_ERROR;
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} break;
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case STOP: {
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CHECK_INTERFACE(IAudioTrack, data, reply);
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stop();
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return NO_ERROR;
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} break;
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case FLUSH: {
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CHECK_INTERFACE(IAudioTrack, data, reply);
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flush();
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return NO_ERROR;
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} break;
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case PAUSE: {
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CHECK_INTERFACE(IAudioTrack, data, reply);
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pause();
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return NO_ERROR;
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}
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case ATTACH_AUX_EFFECT: {
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CHECK_INTERFACE(IAudioTrack, data, reply);
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reply->writeInt32(attachAuxEffect(data.readInt32()));
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return NO_ERROR;
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} break;
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case SET_PARAMETERS: {
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CHECK_INTERFACE(IAudioTrack, data, reply);
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String8 keyValuePairs(data.readString8());
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reply->writeInt32(setParameters(keyValuePairs));
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return NO_ERROR;
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} break;
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case SELECT_PRESENTATION: {
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CHECK_INTERFACE(IAudioTrack, data, reply);
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reply->writeInt32(selectPresentation(data.readInt32(), data.readInt32()));
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return NO_ERROR;
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} break;
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case GET_TIMESTAMP: {
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CHECK_INTERFACE(IAudioTrack, data, reply);
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AudioTimestamp timestamp;
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status_t status = getTimestamp(timestamp);
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reply->writeInt32(status);
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if (status == NO_ERROR) {
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reply->writeInt32(timestamp.mPosition);
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reply->writeInt32(timestamp.mTime.tv_sec);
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reply->writeInt32(timestamp.mTime.tv_nsec);
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}
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return NO_ERROR;
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} break;
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case SIGNAL: {
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CHECK_INTERFACE(IAudioTrack, data, reply);
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signal();
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return NO_ERROR;
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} break;
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case APPLY_VOLUME_SHAPER: {
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CHECK_INTERFACE(IAudioTrack, data, reply);
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sp<VolumeShaper::Configuration> configuration;
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sp<VolumeShaper::Operation> operation;
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int32_t present;
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status_t status = data.readInt32(&present);
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if (status == NO_ERROR && present != 0) {
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configuration = new VolumeShaper::Configuration();
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status = configuration->readFromParcel(&data);
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}
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status = status ?: data.readInt32(&present);
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if (status == NO_ERROR && present != 0) {
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operation = new VolumeShaper::Operation();
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status = operation->readFromParcel(&data);
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}
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if (status == NO_ERROR) {
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status = (status_t)applyVolumeShaper(configuration, operation);
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}
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reply->writeInt32(status);
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return NO_ERROR;
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} break;
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case GET_VOLUME_SHAPER_STATE: {
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CHECK_INTERFACE(IAudioTrack, data, reply);
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int id;
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status_t status = data.readInt32(&id);
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if (status == NO_ERROR) {
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sp<VolumeShaper::State> state = getVolumeShaperState(id);
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if (state.get() != nullptr) {
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status = state->writeToParcel(reply);
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}
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}
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return NO_ERROR;
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} break;
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default:
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return BBinder::onTransact(code, data, reply, flags);
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}
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}
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} // namespace android
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