AAudioStreamParameters.cpp revision 39f02ddfbfd9313370d862a6c4727826379a319a 
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
24using 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
34AAudioStreamParameters::AAudioStreamParameters() {}
35AAudioStreamParameters::~AAudioStreamParameters() {}
36
37void 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
47aaudio_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
104void 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