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 */
log_pcm_mask(const char * mask_name,struct pcm_mask * mask)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
log_pcm_params(struct pcm_params * alsa_hw_params)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
log_pcm_config(struct pcm_config * config,const char * label)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