AudioPatch.cpp revision 53615e29c99c5e9d2ca77aaefd7bf5c770513120 
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::AudioPatch"
18//#define LOG_NDEBUG 0
19
20#include "AudioPatch.h"
21#include "AudioGain.h"
22#include "ConfigParsingUtils.h"
23#include <cutils/log.h>
24#include <utils/String8.h>
25
26namespace android {
27
28int32_t volatile AudioPatch::mNextUniqueId = 1;
29
30AudioPatch::AudioPatch(const struct audio_patch *patch, uid_t uid) :
31    mHandle(static_cast<audio_patch_handle_t>(android_atomic_inc(&mNextUniqueId))),
32    mPatch(*patch),
33    mUid(uid),
34    mAfPatchHandle(0)
35{
36}
37
38status_t AudioPatch::dump(int fd, int spaces, int index) const
39{
40    const size_t SIZE = 256;
41    char buffer[SIZE];
42    String8 result;
43
44    snprintf(buffer, SIZE, "%*sAudio patch %d:\n", spaces, "", index+1);
45    result.append(buffer);
46    snprintf(buffer, SIZE, "%*s- handle: %2d\n", spaces, "", mHandle);
47    result.append(buffer);
48    snprintf(buffer, SIZE, "%*s- audio flinger handle: %2d\n", spaces, "", mAfPatchHandle);
49    result.append(buffer);
50    snprintf(buffer, SIZE, "%*s- owner uid: %2d\n", spaces, "", mUid);
51    result.append(buffer);
52    snprintf(buffer, SIZE, "%*s- %d sources:\n", spaces, "", mPatch.num_sources);
53    result.append(buffer);
54    for (size_t i = 0; i < mPatch.num_sources; i++) {
55        if (mPatch.sources[i].type == AUDIO_PORT_TYPE_DEVICE) {
56            snprintf(buffer, SIZE, "%*s- Device ID %d %s\n", spaces + 2, "",
57                     mPatch.sources[i].id, ConfigParsingUtils::enumToString(sDeviceNameToEnumTable,
58                                                        ARRAY_SIZE(sDeviceNameToEnumTable),
59                                                        mPatch.sources[i].ext.device.type));
60        } else {
61            snprintf(buffer, SIZE, "%*s- Mix ID %d I/O handle %d\n", spaces + 2, "",
62                     mPatch.sources[i].id, mPatch.sources[i].ext.mix.handle);
63        }
64        result.append(buffer);
65    }
66    snprintf(buffer, SIZE, "%*s- %d sinks:\n", spaces, "", mPatch.num_sinks);
67    result.append(buffer);
68    for (size_t i = 0; i < mPatch.num_sinks; i++) {
69        if (mPatch.sinks[i].type == AUDIO_PORT_TYPE_DEVICE) {
70            snprintf(buffer, SIZE, "%*s- Device ID %d %s\n", spaces + 2, "",
71                     mPatch.sinks[i].id, ConfigParsingUtils::enumToString(sDeviceNameToEnumTable,
72                                                        ARRAY_SIZE(sDeviceNameToEnumTable),
73                                                        mPatch.sinks[i].ext.device.type));
74        } else {
75            snprintf(buffer, SIZE, "%*s- Mix ID %d I/O handle %d\n", spaces + 2, "",
76                     mPatch.sinks[i].id, mPatch.sinks[i].ext.mix.handle);
77        }
78        result.append(buffer);
79    }
80
81    write(fd, result.string(), result.size());
82    return NO_ERROR;
83}
84
85status_t AudioPatchCollection::addAudioPatch(audio_patch_handle_t handle,
86                                             const sp<AudioPatch>& patch)
87{
88    ssize_t index = indexOfKey(handle);
89
90    if (index >= 0) {
91        ALOGW("addAudioPatch() patch %d already in", handle);
92        return ALREADY_EXISTS;
93    }
94    add(handle, patch);
95    ALOGV("addAudioPatch() handle %d af handle %d num_sources %d num_sinks %d source handle %d"
96            "sink handle %d",
97          handle, patch->mAfPatchHandle, patch->mPatch.num_sources, patch->mPatch.num_sinks,
98          patch->mPatch.sources[0].id, patch->mPatch.sinks[0].id);
99    return NO_ERROR;
100}
101
102status_t AudioPatchCollection::removeAudioPatch(audio_patch_handle_t handle)
103{
104    ssize_t index = indexOfKey(handle);
105
106    if (index < 0) {
107        ALOGW("removeAudioPatch() patch %d not in", handle);
108        return ALREADY_EXISTS;
109    }
110    ALOGV("removeAudioPatch() handle %d af handle %d", handle, valueAt(index)->mAfPatchHandle);
111    removeItemsAt(index);
112    return NO_ERROR;
113}
114
115status_t AudioPatchCollection::listAudioPatches(unsigned int *num_patches,
116                                                struct audio_patch *patches) const
117{
118    if (num_patches == NULL || (*num_patches != 0 && patches == NULL)) {
119        return BAD_VALUE;
120    }
121    ALOGV("listAudioPatches() num_patches %d patches %p available patches %zu",
122          *num_patches, patches, size());
123    if (patches == NULL) {
124        *num_patches = 0;
125    }
126
127    size_t patchesWritten = 0;
128    size_t patchesMax = *num_patches;
129    for (size_t i = 0; i  < size() && patchesWritten < patchesMax; i++) {
130        const sp<AudioPatch>  patch = valueAt(i);
131        patches[patchesWritten] = patch->mPatch;
132        patches[patchesWritten++].id = patch->mHandle;
133        ALOGV("listAudioPatches() patch %zu num_sources %d num_sinks %d",
134              i, patch->mPatch.num_sources, patch->mPatch.num_sinks);
135    }
136    *num_patches = size();
137
138    ALOGV("listAudioPatches() got %zu patches needed %d", patchesWritten, *num_patches);
139    return NO_ERROR;
140}
141
142status_t AudioPatchCollection::dump(int fd) const
143{
144    const size_t SIZE = 256;
145    char buffer[SIZE];
146    snprintf(buffer, SIZE, "\nAudio Patches:\n");
147    write(fd, buffer, strlen(buffer));
148    for (size_t i = 0; i < size(); i++) {
149        valueAt(i)->dump(fd, 2, i);
150    }
151    return NO_ERROR;
152}
153
154}; // namespace android
155