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 "StreamDescriptor.h" 29 #include <utils/Log.h> 30 #include <utils/String8.h> 31 32 #include <math.h> 33 34 namespace android { 35 36 AudioGain::AudioGain(int index, bool useInChannelMask) 37 { 38 mIndex = index; 39 mUseInChannelMask = useInChannelMask; 40 memset(&mGain, 0, sizeof(struct audio_gain)); 41 } 42 43 void AudioGain::getDefaultConfig(struct audio_gain_config *config) 44 { 45 config->index = mIndex; 46 config->mode = mGain.mode; 47 config->channel_mask = mGain.channel_mask; 48 if ((mGain.mode & AUDIO_GAIN_MODE_JOINT) == AUDIO_GAIN_MODE_JOINT) { 49 config->values[0] = mGain.default_value; 50 } else { 51 uint32_t numValues; 52 if (mUseInChannelMask) { 53 numValues = audio_channel_count_from_in_mask(mGain.channel_mask); 54 } else { 55 numValues = audio_channel_count_from_out_mask(mGain.channel_mask); 56 } 57 for (size_t i = 0; i < numValues; i++) { 58 config->values[i] = mGain.default_value; 59 } 60 } 61 if ((mGain.mode & AUDIO_GAIN_MODE_RAMP) == AUDIO_GAIN_MODE_RAMP) { 62 config->ramp_duration_ms = mGain.min_ramp_ms; 63 } 64 } 65 66 status_t AudioGain::checkConfig(const struct audio_gain_config *config) 67 { 68 if ((config->mode & ~mGain.mode) != 0) { 69 return BAD_VALUE; 70 } 71 if ((config->mode & AUDIO_GAIN_MODE_JOINT) == AUDIO_GAIN_MODE_JOINT) { 72 if ((config->values[0] < mGain.min_value) || 73 (config->values[0] > mGain.max_value)) { 74 return BAD_VALUE; 75 } 76 } else { 77 if ((config->channel_mask & ~mGain.channel_mask) != 0) { 78 return BAD_VALUE; 79 } 80 uint32_t numValues; 81 if (mUseInChannelMask) { 82 numValues = audio_channel_count_from_in_mask(config->channel_mask); 83 } else { 84 numValues = audio_channel_count_from_out_mask(config->channel_mask); 85 } 86 for (size_t i = 0; i < numValues; i++) { 87 if ((config->values[i] < mGain.min_value) || 88 (config->values[i] > mGain.max_value)) { 89 return BAD_VALUE; 90 } 91 } 92 } 93 if ((config->mode & AUDIO_GAIN_MODE_RAMP) == AUDIO_GAIN_MODE_RAMP) { 94 if ((config->ramp_duration_ms < mGain.min_ramp_ms) || 95 (config->ramp_duration_ms > mGain.max_ramp_ms)) { 96 return BAD_VALUE; 97 } 98 } 99 return NO_ERROR; 100 } 101 102 void AudioGain::dump(int fd, int spaces, int index) const 103 { 104 const size_t SIZE = 256; 105 char buffer[SIZE]; 106 String8 result; 107 108 snprintf(buffer, SIZE, "%*sGain %d:\n", spaces, "", index+1); 109 result.append(buffer); 110 snprintf(buffer, SIZE, "%*s- mode: %08x\n", spaces, "", mGain.mode); 111 result.append(buffer); 112 snprintf(buffer, SIZE, "%*s- channel_mask: %08x\n", spaces, "", mGain.channel_mask); 113 result.append(buffer); 114 snprintf(buffer, SIZE, "%*s- min_value: %d mB\n", spaces, "", mGain.min_value); 115 result.append(buffer); 116 snprintf(buffer, SIZE, "%*s- max_value: %d mB\n", spaces, "", mGain.max_value); 117 result.append(buffer); 118 snprintf(buffer, SIZE, "%*s- default_value: %d mB\n", spaces, "", mGain.default_value); 119 result.append(buffer); 120 snprintf(buffer, SIZE, "%*s- step_value: %d mB\n", spaces, "", mGain.step_value); 121 result.append(buffer); 122 snprintf(buffer, SIZE, "%*s- min_ramp_ms: %d ms\n", spaces, "", mGain.min_ramp_ms); 123 result.append(buffer); 124 snprintf(buffer, SIZE, "%*s- max_ramp_ms: %d ms\n", spaces, "", mGain.max_ramp_ms); 125 result.append(buffer); 126 127 write(fd, result.string(), result.size()); 128 } 129 130 }; // namespace android 131
