1 /* 2 * Copyright (C) 2014 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 "alsa_logging" 18 /*#define LOG_NDEBUG 0*/ 19 20 #include <string.h> 21 22 #include <log/log.h> 23 24 #include "include/alsa_logging.h" 25 26 #define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0])) 27 28 /* 29 * Logging 30 */ 31 void log_pcm_mask(const char* mask_name, struct pcm_mask* mask) 32 { 33 const size_t num_slots = ARRAY_SIZE(mask->bits); 34 const size_t bits_per_slot = (sizeof(mask->bits[0]) * 8); 35 const size_t chars_per_slot = (bits_per_slot + 1); /* comma */ 36 37 const size_t BUFF_SIZE = 38 (num_slots * chars_per_slot + 2 + 1); /* brackets and null-terminator */ 39 char buff[BUFF_SIZE]; 40 buff[0] = '\0'; 41 42 size_t slot_index, bit_index; 43 strcat(buff, "["); 44 for (slot_index = 0; slot_index < num_slots; slot_index++) { 45 unsigned bit_mask = 1; 46 for (bit_index = 0; bit_index < bits_per_slot; bit_index++) { 47 strcat(buff, (mask->bits[slot_index] & bit_mask) != 0 ? "1" : "0"); 48 bit_mask <<= 1; 49 } 50 if (slot_index < num_slots - 1) { 51 strcat(buff, ","); 52 } 53 } 54 strcat(buff, "]"); 55 56 ALOGV("%s: mask:%s", mask_name, buff); 57 } 58 59 void log_pcm_params(struct pcm_params * alsa_hw_params) 60 { 61 ALOGV("usb:audio_hw - PCM_PARAM_SAMPLE_BITS min:%u, max:%u", 62 pcm_params_get_min(alsa_hw_params, PCM_PARAM_SAMPLE_BITS), 63 pcm_params_get_max(alsa_hw_params, PCM_PARAM_SAMPLE_BITS)); 64 ALOGV("usb:audio_hw - PCM_PARAM_FRAME_BITS min:%u, max:%u", 65 pcm_params_get_min(alsa_hw_params, PCM_PARAM_FRAME_BITS), 66 pcm_params_get_max(alsa_hw_params, PCM_PARAM_FRAME_BITS)); 67 log_pcm_mask("PCM_PARAM_FORMAT", 68 pcm_params_get_mask(alsa_hw_params, PCM_PARAM_FORMAT)); 69 log_pcm_mask("PCM_PARAM_SUBFORMAT", 70 pcm_params_get_mask(alsa_hw_params, PCM_PARAM_SUBFORMAT)); 71 ALOGV("usb:audio_hw - PCM_PARAM_CHANNELS min:%u, max:%u", 72 pcm_params_get_min(alsa_hw_params, PCM_PARAM_CHANNELS), 73 pcm_params_get_max(alsa_hw_params, PCM_PARAM_CHANNELS)); 74 ALOGV("usb:audio_hw - PCM_PARAM_RATE min:%u, max:%u", 75 pcm_params_get_min(alsa_hw_params, PCM_PARAM_RATE), 76 pcm_params_get_max(alsa_hw_params, PCM_PARAM_RATE)); 77 ALOGV("usb:audio_hw - PCM_PARAM_PERIOD_TIME min:%u, max:%u", 78 pcm_params_get_min(alsa_hw_params, PCM_PARAM_PERIOD_TIME), 79 pcm_params_get_max(alsa_hw_params, PCM_PARAM_PERIOD_TIME)); 80 ALOGV("usb:audio_hw - PCM_PARAM_PERIOD_SIZE min:%u, max:%u", 81 pcm_params_get_min(alsa_hw_params, PCM_PARAM_PERIOD_SIZE), 82 pcm_params_get_max(alsa_hw_params, PCM_PARAM_PERIOD_SIZE)); 83 ALOGV("usb:audio_hw - PCM_PARAM_PERIOD_BYTES min:%u, max:%u", 84 pcm_params_get_min(alsa_hw_params, PCM_PARAM_PERIOD_BYTES), 85 pcm_params_get_max(alsa_hw_params, PCM_PARAM_PERIOD_BYTES)); 86 ALOGV("usb:audio_hw - PCM_PARAM_PERIODS min:%u, max:%u", 87 pcm_params_get_min(alsa_hw_params, PCM_PARAM_PERIODS), 88 pcm_params_get_max(alsa_hw_params, PCM_PARAM_PERIODS)); 89 ALOGV("usb:audio_hw - PCM_PARAM_BUFFER_TIME min:%u, max:%u", 90 pcm_params_get_min(alsa_hw_params, PCM_PARAM_BUFFER_TIME), 91 pcm_params_get_max(alsa_hw_params, PCM_PARAM_BUFFER_TIME)); 92 ALOGV("usb:audio_hw - PCM_PARAM_BUFFER_SIZE min:%u, max:%u", 93 pcm_params_get_min(alsa_hw_params, PCM_PARAM_BUFFER_SIZE), 94 pcm_params_get_max(alsa_hw_params, PCM_PARAM_BUFFER_SIZE)); 95 ALOGV("usb:audio_hw - PCM_PARAM_BUFFER_BYTES min:%u, max:%u", 96 pcm_params_get_min(alsa_hw_params, PCM_PARAM_BUFFER_BYTES), 97 pcm_params_get_max(alsa_hw_params, PCM_PARAM_BUFFER_BYTES)); 98 ALOGV("usb:audio_hw - PCM_PARAM_TICK_TIME min:%u, max:%u", 99 pcm_params_get_min(alsa_hw_params, PCM_PARAM_TICK_TIME), 100 pcm_params_get_max(alsa_hw_params, PCM_PARAM_TICK_TIME)); 101 } 102 103 void log_pcm_config(struct pcm_config * config, const char* label) { 104 ALOGV("log_pcm_config() - %s", label); 105 ALOGV(" channels:%d", config->channels); 106 ALOGV(" rate:%d", config->rate); 107 ALOGV(" period_size:%d", config->period_size); 108 ALOGV(" period_count:%d", config->period_count); 109 ALOGV(" format:%d", config->format); 110 #if 0 111 /* Values to use for the ALSA start, stop and silence thresholds. Setting 112 * any one of these values to 0 will cause the default tinyalsa values to be 113 * used instead. Tinyalsa defaults are as follows. 114 * 115 * start_threshold : period_count * period_size 116 * stop_threshold : period_count * period_size 117 * silence_threshold : 0 118 */ 119 unsigned int start_threshold; 120 unsigned int stop_threshold; 121 unsigned int silence_threshold; 122 123 /* Minimum number of frames available before pcm_mmap_write() will actually 124 * write into the kernel buffer. Only used if the stream is opened in mmap mode 125 * (pcm_open() called with PCM_MMAP flag set). Use 0 for default. 126 */ 127 int avail_min; 128 #endif 129 } 130
