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      1 /*
      2  * Copyright 2017 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 
     18 #define LOG_TAG "AAudio"
     19 #include <utils/Log.h>
     20 #include <hardware/audio.h>
     21 
     22 #include "AAudioStreamParameters.h"
     23 
     24 using namespace aaudio;
     25 
     26 // TODO These defines should be moved to a central place in audio.
     27 #define SAMPLES_PER_FRAME_MIN        1
     28 // TODO Remove 8 channel limitation.
     29 #define SAMPLES_PER_FRAME_MAX        FCC_8
     30 #define SAMPLE_RATE_HZ_MIN           8000
     31 // HDMI supports up to 32 channels at 1536000 Hz.
     32 #define SAMPLE_RATE_HZ_MAX           1600000
     33 
     34 AAudioStreamParameters::AAudioStreamParameters() {}
     35 AAudioStreamParameters::~AAudioStreamParameters() {}
     36 
     37 void AAudioStreamParameters::copyFrom(const AAudioStreamParameters &other) {
     38     mSamplesPerFrame = other.mSamplesPerFrame;
     39     mSampleRate      = other.mSampleRate;
     40     mDeviceId        = other.mDeviceId;
     41     mSharingMode     = other.mSharingMode;
     42     mAudioFormat     = other.mAudioFormat;
     43     mDirection       = other.mDirection;
     44     mBufferCapacity  = other.mBufferCapacity;
     45 }
     46 
     47 aaudio_result_t AAudioStreamParameters::validate() const {
     48     if (mSamplesPerFrame != AAUDIO_UNSPECIFIED
     49         && (mSamplesPerFrame < SAMPLES_PER_FRAME_MIN || mSamplesPerFrame > SAMPLES_PER_FRAME_MAX)) {
     50         ALOGE("AAudioStreamParameters: channelCount out of range = %d", mSamplesPerFrame);
     51         return AAUDIO_ERROR_OUT_OF_RANGE;
     52     }
     53 
     54     if (mDeviceId < 0) {
     55         ALOGE("AAudioStreamParameters: deviceId out of range = %d", mDeviceId);
     56         return AAUDIO_ERROR_OUT_OF_RANGE;
     57     }
     58 
     59     switch (mSharingMode) {
     60         case AAUDIO_SHARING_MODE_EXCLUSIVE:
     61         case AAUDIO_SHARING_MODE_SHARED:
     62             break;
     63         default:
     64             ALOGE("AAudioStreamParameters: illegal sharingMode = %d", mSharingMode);
     65             return AAUDIO_ERROR_ILLEGAL_ARGUMENT;
     66             // break;
     67     }
     68 
     69     switch (mAudioFormat) {
     70         case AAUDIO_FORMAT_UNSPECIFIED:
     71         case AAUDIO_FORMAT_PCM_I16:
     72         case AAUDIO_FORMAT_PCM_FLOAT:
     73             break; // valid
     74         default:
     75             ALOGE("AAudioStreamParameters: audioFormat not valid = %d", mAudioFormat);
     76             return AAUDIO_ERROR_INVALID_FORMAT;
     77             // break;
     78     }
     79 
     80     if (mSampleRate != AAUDIO_UNSPECIFIED
     81         && (mSampleRate < SAMPLE_RATE_HZ_MIN || mSampleRate > SAMPLE_RATE_HZ_MAX)) {
     82         ALOGE("AAudioStreamParameters: sampleRate out of range = %d", mSampleRate);
     83         return AAUDIO_ERROR_INVALID_RATE;
     84     }
     85 
     86     if (mBufferCapacity < 0) {
     87         ALOGE("AAudioStreamParameters: bufferCapacity out of range = %d", mBufferCapacity);
     88         return AAUDIO_ERROR_OUT_OF_RANGE;
     89     }
     90 
     91     switch (mDirection) {
     92         case AAUDIO_DIRECTION_INPUT:
     93         case AAUDIO_DIRECTION_OUTPUT:
     94             break; // valid
     95         default:
     96             ALOGE("AAudioStreamParameters: direction not valid = %d", mDirection);
     97             return AAUDIO_ERROR_ILLEGAL_ARGUMENT;
     98             // break;
     99     }
    100 
    101     return AAUDIO_OK;
    102 }
    103 
    104 void AAudioStreamParameters::dump() const {
    105     ALOGD("AAudioStreamParameters mDeviceId        = %d", mDeviceId);
    106     ALOGD("AAudioStreamParameters mSampleRate      = %d", mSampleRate);
    107     ALOGD("AAudioStreamParameters mSamplesPerFrame = %d", mSamplesPerFrame);
    108     ALOGD("AAudioStreamParameters mSharingMode     = %d", (int)mSharingMode);
    109     ALOGD("AAudioStreamParameters mAudioFormat     = %d", (int)mAudioFormat);
    110     ALOGD("AAudioStreamParameters mDirection       = %d", mDirection);
    111     ALOGD("AAudioStreamParameters mBufferCapacity  = %d", mBufferCapacity);
    112 }
    113 
    114