1 /* 2 * Copyright (C) 2015 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 #define LOG_TAG "APM::AudioGain" 18 //#define LOG_NDEBUG 0 19 20 //#define VERY_VERBOSE_LOGGING 21 #ifdef VERY_VERBOSE_LOGGING 22 #define ALOGVV ALOGV 23 #else 24 #define ALOGVV(a...) do { } while(0) 25 #endif 26 27 #include "AudioGain.h" 28 #include <utils/Log.h> 29 #include <utils/String8.h> 30 31 #include <math.h> 32 33 namespace android { 34 35 AudioGain::AudioGain(int index, bool useInChannelMask) 36 { 37 mIndex = index; 38 mUseInChannelMask = useInChannelMask; 39 memset(&mGain, 0, sizeof(struct audio_gain)); 40 } 41 42 void AudioGain::getDefaultConfig(struct audio_gain_config *config) 43 { 44 config->index = mIndex; 45 config->mode = mGain.mode; 46 config->channel_mask = mGain.channel_mask; 47 if ((mGain.mode & AUDIO_GAIN_MODE_JOINT) == AUDIO_GAIN_MODE_JOINT) { 48 config->values[0] = mGain.default_value; 49 } else { 50 uint32_t numValues; 51 if (mUseInChannelMask) { 52 numValues = audio_channel_count_from_in_mask(mGain.channel_mask); 53 } else { 54 numValues = audio_channel_count_from_out_mask(mGain.channel_mask); 55 } 56 for (size_t i = 0; i < numValues; i++) { 57 config->values[i] = mGain.default_value; 58 } 59 } 60 if ((mGain.mode & AUDIO_GAIN_MODE_RAMP) == AUDIO_GAIN_MODE_RAMP) { 61 config->ramp_duration_ms = mGain.min_ramp_ms; 62 } 63 } 64 65 status_t AudioGain::checkConfig(const struct audio_gain_config *config) 66 { 67 if ((config->mode & ~mGain.mode) != 0) { 68 return BAD_VALUE; 69 } 70 if ((config->mode & AUDIO_GAIN_MODE_JOINT) == AUDIO_GAIN_MODE_JOINT) { 71 if ((config->values[0] < mGain.min_value) || 72 (config->values[0] > mGain.max_value)) { 73 return BAD_VALUE; 74 } 75 } else { 76 if ((config->channel_mask & ~mGain.channel_mask) != 0) { 77 return BAD_VALUE; 78 } 79 uint32_t numValues; 80 if (mUseInChannelMask) { 81 numValues = audio_channel_count_from_in_mask(config->channel_mask); 82 } else { 83 numValues = audio_channel_count_from_out_mask(config->channel_mask); 84 } 85 for (size_t i = 0; i < numValues; i++) { 86 if ((config->values[i] < mGain.min_value) || 87 (config->values[i] > mGain.max_value)) { 88 return BAD_VALUE; 89 } 90 } 91 } 92 if ((config->mode & AUDIO_GAIN_MODE_RAMP) == AUDIO_GAIN_MODE_RAMP) { 93 if ((config->ramp_duration_ms < mGain.min_ramp_ms) || 94 (config->ramp_duration_ms > mGain.max_ramp_ms)) { 95 return BAD_VALUE; 96 } 97 } 98 return NO_ERROR; 99 } 100 101 void AudioGain::dump(int fd, int spaces, int index) const 102 { 103 const size_t SIZE = 256; 104 char buffer[SIZE]; 105 String8 result; 106 107 snprintf(buffer, SIZE, "%*sGain %d:\n", spaces, "", index+1); 108 result.append(buffer); 109 snprintf(buffer, SIZE, "%*s- mode: %08x\n", spaces, "", mGain.mode); 110 result.append(buffer); 111 snprintf(buffer, SIZE, "%*s- channel_mask: %08x\n", spaces, "", mGain.channel_mask); 112 result.append(buffer); 113 snprintf(buffer, SIZE, "%*s- min_value: %d mB\n", spaces, "", mGain.min_value); 114 result.append(buffer); 115 snprintf(buffer, SIZE, "%*s- max_value: %d mB\n", spaces, "", mGain.max_value); 116 result.append(buffer); 117 snprintf(buffer, SIZE, "%*s- default_value: %d mB\n", spaces, "", mGain.default_value); 118 result.append(buffer); 119 snprintf(buffer, SIZE, "%*s- step_value: %d mB\n", spaces, "", mGain.step_value); 120 result.append(buffer); 121 snprintf(buffer, SIZE, "%*s- min_ramp_ms: %d ms\n", spaces, "", mGain.min_ramp_ms); 122 result.append(buffer); 123 snprintf(buffer, SIZE, "%*s- max_ramp_ms: %d ms\n", spaces, "", mGain.max_ramp_ms); 124 result.append(buffer); 125 126 write(fd, result.string(), result.size()); 127 } 128 129 }; // namespace android 130
