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Diffstat (limited to 'libs/audioflinger/AudioHardwareStub.cpp')
| -rw-r--r-- | libs/audioflinger/AudioHardwareStub.cpp | 185 |
1 files changed, 185 insertions, 0 deletions
diff --git a/libs/audioflinger/AudioHardwareStub.cpp b/libs/audioflinger/AudioHardwareStub.cpp new file mode 100644 index 0000000..b13cb1c --- /dev/null +++ b/libs/audioflinger/AudioHardwareStub.cpp @@ -0,0 +1,185 @@ +/* //device/servers/AudioFlinger/AudioHardwareStub.cpp +** +** Copyright 2007, 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. +*/ + +#include <stdint.h> +#include <sys/types.h> + +#include <stdlib.h> +#include <unistd.h> +#include <utils/String8.h> + +#include "AudioHardwareStub.h" + +namespace android { + +// ---------------------------------------------------------------------------- + +AudioHardwareStub::AudioHardwareStub() : mMicMute(false) +{ +} + +AudioHardwareStub::~AudioHardwareStub() +{ +} + +status_t AudioHardwareStub::initCheck() +{ + return NO_ERROR; +} + +AudioStreamOut* AudioHardwareStub::openOutputStream( + int format, int channelCount, uint32_t sampleRate, status_t *status) +{ + AudioStreamOutStub* out = new AudioStreamOutStub(); + status_t lStatus = out->set(format, channelCount, sampleRate); + if (status) { + *status = lStatus; + } + if (lStatus == NO_ERROR) + return out; + delete out; + return 0; +} + +AudioStreamIn* AudioHardwareStub::openInputStream( + int format, int channelCount, uint32_t sampleRate, + status_t *status, AudioSystem::audio_in_acoustics acoustics) +{ + AudioStreamInStub* in = new AudioStreamInStub(); + status_t lStatus = in->set(format, channelCount, sampleRate, acoustics); + if (status) { + *status = lStatus; + } + if (lStatus == NO_ERROR) + return in; + delete in; + return 0; +} + +status_t AudioHardwareStub::setVoiceVolume(float volume) +{ + return NO_ERROR; +} + +status_t AudioHardwareStub::setMasterVolume(float volume) +{ + return NO_ERROR; +} + +status_t AudioHardwareStub::dumpInternals(int fd, const Vector<String16>& args) +{ + const size_t SIZE = 256; + char buffer[SIZE]; + String8 result; + result.append("AudioHardwareStub::dumpInternals\n"); + snprintf(buffer, SIZE, "\tmMicMute: %s\n", mMicMute? "true": "false"); + result.append(buffer); + ::write(fd, result.string(), result.size()); + return NO_ERROR; +} + +status_t AudioHardwareStub::dump(int fd, const Vector<String16>& args) +{ + dumpInternals(fd, args); + return NO_ERROR; +} + +// ---------------------------------------------------------------------------- + +status_t AudioStreamOutStub::set(int format, int channels, uint32_t rate) +{ + // fix up defaults + if (format == 0) format = AudioSystem::PCM_16_BIT; + if (channels == 0) channels = channelCount(); + if (rate == 0) rate = sampleRate(); + + if ((format == AudioSystem::PCM_16_BIT) && + (channels == channelCount()) && + (rate == sampleRate())) + return NO_ERROR; + return BAD_VALUE; +} + +ssize_t AudioStreamOutStub::write(const void* buffer, size_t bytes) +{ + // fake timing for audio output + usleep(bytes * 1000000 / sizeof(int16_t) / channelCount() / sampleRate()); + return bytes; +} + +status_t AudioStreamOutStub::standby() +{ + return NO_ERROR; +} + +status_t AudioStreamOutStub::dump(int fd, const Vector<String16>& args) +{ + const size_t SIZE = 256; + char buffer[SIZE]; + String8 result; + snprintf(buffer, SIZE, "AudioStreamOutStub::dump\n"); + snprintf(buffer, SIZE, "\tsample rate: %d\n", sampleRate()); + snprintf(buffer, SIZE, "\tbuffer size: %d\n", bufferSize()); + snprintf(buffer, SIZE, "\tchannel count: %d\n", channelCount()); + snprintf(buffer, SIZE, "\tformat: %d\n", format()); + result.append(buffer); + ::write(fd, result.string(), result.size()); + return NO_ERROR; +} + +// ---------------------------------------------------------------------------- + +status_t AudioStreamInStub::set(int format, int channels, uint32_t rate, + AudioSystem::audio_in_acoustics acoustics) +{ + if ((format == AudioSystem::PCM_16_BIT) && + (channels == channelCount()) && + (rate == sampleRate())) + return NO_ERROR; + return BAD_VALUE; +} + +ssize_t AudioStreamInStub::read(void* buffer, ssize_t bytes) +{ + // fake timing for audio input + usleep(bytes * 1000000 / sizeof(int16_t) / channelCount() / sampleRate()); + memset(buffer, 0, bytes); + return bytes; +} + +status_t AudioStreamInStub::dump(int fd, const Vector<String16>& args) +{ + const size_t SIZE = 256; + char buffer[SIZE]; + String8 result; + snprintf(buffer, SIZE, "AudioStreamInStub::dump\n"); + result.append(buffer); + snprintf(buffer, SIZE, "\tsample rate: %d\n", sampleRate()); + result.append(buffer); + snprintf(buffer, SIZE, "\tbuffer size: %d\n", bufferSize()); + result.append(buffer); + snprintf(buffer, SIZE, "\tchannel count: %d\n", channelCount()); + result.append(buffer); + snprintf(buffer, SIZE, "\tformat: %d\n", format()); + result.append(buffer); + ::write(fd, result.string(), result.size()); + return NO_ERROR; +} + +// ---------------------------------------------------------------------------- + +}; // namespace android |