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 "usb_logging"
18/*#define LOG_NDEBUG 0*/
19
20#include <string.h>
21
22#include <log/log.h>
23
24#include "logging.h"
25
26#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
27
28/*
29 * Logging
30 */
31void 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
59void 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
103void 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