| /* |
| ** |
| ** Copyright 2014, 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 "AudioHAL_HDMIAudioOutput" |
| |
| #include <utils/Log.h> |
| |
| #include <stdint.h> |
| #include <sound/asound.h> // bionic |
| |
| #include "AudioHardwareOutput.h" |
| #include "AudioStreamOut.h" |
| #include "HDMIAudioOutput.h" |
| |
| namespace android { |
| |
| extern AudioHardwareOutput gAudioHardwareOutput; |
| |
| HDMIAudioOutput::HDMIAudioOutput() |
| : AudioOutput(kHDMI_ALSADeviceName, PCM_FORMAT_S24_LE) |
| { |
| } |
| |
| HDMIAudioOutput::~HDMIAudioOutput() |
| { |
| } |
| |
| status_t HDMIAudioOutput::setupForStream(const AudioStreamOut& stream) |
| { |
| mFramesPerChunk = stream.framesPerChunk(); |
| mFramesPerSec = stream.outputSampleRate(); |
| mBufferChunks = stream.nomChunksInFlight(); |
| mChannelCnt = audio_channel_count_from_out_mask(stream.chanMask()); |
| |
| ALOGI("setupForStream format %08x, rate = %u", stream.format(), mFramesPerSec); |
| |
| if (!gAudioHardwareOutput.getHDMIAudioCaps().supportsFormat( |
| stream.format(), |
| stream.sampleRate(), |
| mChannelCnt, |
| stream.isIec958NonAudio())) { |
| ALOGE("HDMI Sink does not support format = 0x%0X, srate = %d, #channels = 0%d", |
| stream.format(), mFramesPerSec, mChannelCnt); |
| return BAD_VALUE; |
| } |
| |
| setupInternal(); |
| |
| setChannelStatusToCompressed(stream.isIec958NonAudio()); |
| |
| return initCheck(); |
| } |
| |
| void HDMIAudioOutput::applyPendingVolParams() |
| { |
| } |
| |
| #define IEC958_AES0_NONAUDIO (1<<1) /* 0 = audio, 1 = non-audio */ |
| |
| void HDMIAudioOutput::setChannelStatusToCompressed(bool compressed) |
| { |
| struct snd_aes_iec958 iec958; |
| struct mixer* mixer; |
| int err; |
| const size_t count = 1; |
| |
| ALOGI("setChannelStatusToCompressed %d", compressed); |
| |
| mixer = mixer_open(mALSACardID); |
| if (mixer == NULL) { |
| ALOGE("Couldn't open mixer on alsa id %d", mALSACardID); |
| return; |
| } |
| |
| const char *ctlName = "IEC958 Playback Default"; |
| struct mixer_ctl *ctl = mixer_get_ctl_by_name(mixer, ctlName); |
| if (ctl == NULL) { |
| ALOGE("Couldn't get mixer ctl %s", ctlName); |
| goto finish; |
| } |
| |
| // Set count to 1 so we get one complete iec958 structure. |
| err = mixer_ctl_get_array(ctl, &iec958, count); |
| if (err < 0) { |
| ALOGE("Channel Status bit get has failed\n"); |
| goto finish; |
| } |
| |
| if (compressed) { |
| iec958.status[0] |= IEC958_AES0_NONAUDIO; |
| } else { |
| iec958.status[0] &= ~IEC958_AES0_NONAUDIO; |
| } |
| |
| err = mixer_ctl_set_array(ctl, &iec958, count); |
| if (err < 0) { |
| ALOGE("Channel Status bit set has failed\n"); |
| } |
| |
| finish: |
| mixer_close(mixer); |
| } |
| |
| void HDMIAudioOutput::dump(String8& result) |
| { |
| const size_t SIZE = 256; |
| char buffer[SIZE]; |
| |
| snprintf(buffer, SIZE, |
| "\t%s Audio Output\n" |
| "\t\tSample Rate : %d\n" |
| "\t\tChannel Count : %d\n" |
| "\t\tState : %d\n", |
| getOutputName(), |
| mFramesPerSec, |
| mChannelCnt, |
| mState); |
| result.append(buffer); |
| } |
| |
| } // namespace android |