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 "TypeConverter.h"
23 #include <cutils/log.h>
24 #include <utils/String8.h>
25 
26 namespace android {
27 
28 int32_t volatile AudioPatch::mNextUniqueId = 1;
29 
AudioPatch(const struct audio_patch * patch,uid_t uid)30 AudioPatch::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(AUDIO_PATCH_HANDLE_NONE)
35 {
36 }
37 
dump(int fd,int spaces,int index) const38 status_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             std::string device;
57             DeviceConverter::toString(mPatch.sources[i].ext.device.type, device);
58             snprintf(buffer, SIZE, "%*s- Device ID %d %s\n", spaces + 2, "",
59                      mPatch.sources[i].id,
60                      device.c_str());
61         } else {
62             snprintf(buffer, SIZE, "%*s- Mix ID %d I/O handle %d\n", spaces + 2, "",
63                      mPatch.sources[i].id, mPatch.sources[i].ext.mix.handle);
64         }
65         result.append(buffer);
66     }
67     snprintf(buffer, SIZE, "%*s- %d sinks:\n", spaces, "", mPatch.num_sinks);
68     result.append(buffer);
69     for (size_t i = 0; i < mPatch.num_sinks; i++) {
70         if (mPatch.sinks[i].type == AUDIO_PORT_TYPE_DEVICE) {
71             std::string device;
72             DeviceConverter::toString(mPatch.sinks[i].ext.device.type, device);
73             snprintf(buffer, SIZE, "%*s- Device ID %d %s\n", spaces + 2, "",
74                      mPatch.sinks[i].id,
75                      device.c_str());
76         } else {
77             snprintf(buffer, SIZE, "%*s- Mix ID %d I/O handle %d\n", spaces + 2, "",
78                      mPatch.sinks[i].id, mPatch.sinks[i].ext.mix.handle);
79         }
80         result.append(buffer);
81     }
82 
83     write(fd, result.string(), result.size());
84     return NO_ERROR;
85 }
86 
addAudioPatch(audio_patch_handle_t handle,const sp<AudioPatch> & patch)87 status_t AudioPatchCollection::addAudioPatch(audio_patch_handle_t handle,
88                                              const sp<AudioPatch>& patch)
89 {
90     ssize_t index = indexOfKey(handle);
91 
92     if (index >= 0) {
93         ALOGW("addAudioPatch() patch %d already in", handle);
94         return ALREADY_EXISTS;
95     }
96     add(handle, patch);
97     ALOGV("addAudioPatch() handle %d af handle %d num_sources %d num_sinks %d source handle %d"
98             "sink handle %d",
99           handle, patch->mAfPatchHandle, patch->mPatch.num_sources, patch->mPatch.num_sinks,
100           patch->mPatch.sources[0].id, patch->mPatch.sinks[0].id);
101     return NO_ERROR;
102 }
103 
removeAudioPatch(audio_patch_handle_t handle)104 status_t AudioPatchCollection::removeAudioPatch(audio_patch_handle_t handle)
105 {
106     ssize_t index = indexOfKey(handle);
107 
108     if (index < 0) {
109         ALOGW("removeAudioPatch() patch %d not in", handle);
110         return ALREADY_EXISTS;
111     }
112     ALOGV("removeAudioPatch() handle %d af handle %d", handle, valueAt(index)->mAfPatchHandle);
113     removeItemsAt(index);
114     return NO_ERROR;
115 }
116 
listAudioPatches(unsigned int * num_patches,struct audio_patch * patches) const117 status_t AudioPatchCollection::listAudioPatches(unsigned int *num_patches,
118                                                 struct audio_patch *patches) const
119 {
120     if (num_patches == NULL || (*num_patches != 0 && patches == NULL)) {
121         return BAD_VALUE;
122     }
123     ALOGV("listAudioPatches() num_patches %d patches %p available patches %zu",
124           *num_patches, patches, size());
125     if (patches == NULL) {
126         *num_patches = 0;
127     }
128 
129     size_t patchesWritten = 0;
130     size_t patchesMax = *num_patches;
131     *num_patches = 0;
132     for (size_t patchIndex = 0; patchIndex < size(); patchIndex++) {
133         // do not report patches with AUDIO_DEVICE_IN_STUB as source or
134         // AUDIO_DEVICE_OUT_STUB as sink as those devices are used by stub HALs by convention
135         const sp<AudioPatch> patch = valueAt(patchIndex);
136         bool skip = false;
137         for (size_t srcIndex = 0; srcIndex < patch->mPatch.num_sources && !skip; srcIndex++) {
138             if (patch->mPatch.sources[srcIndex].type == AUDIO_PORT_TYPE_DEVICE &&
139                     patch->mPatch.sources[srcIndex].ext.device.type == AUDIO_DEVICE_IN_STUB) {
140                 skip = true;
141             }
142         }
143         for (size_t sinkIndex = 0; sinkIndex < patch->mPatch.num_sinks && !skip; sinkIndex++) {
144             if (patch->mPatch.sinks[sinkIndex].type == AUDIO_PORT_TYPE_DEVICE &&
145                     patch->mPatch.sinks[sinkIndex].ext.device.type == AUDIO_DEVICE_OUT_STUB) {
146                 skip = true;
147             }
148         }
149         if (skip) {
150             continue; // to next audio patch
151         }
152         if (patchesWritten < patchesMax) {
153             patches[patchesWritten] = patch->mPatch;
154             patches[patchesWritten++].id = patch->mHandle;
155         }
156         (*num_patches)++;
157         ALOGV("listAudioPatches() patch %zu num_sources %d num_sinks %d",
158               patchIndex, patch->mPatch.num_sources, patch->mPatch.num_sinks);
159     }
160 
161     ALOGV("listAudioPatches() got %zu patches needed %d", patchesWritten, *num_patches);
162     return NO_ERROR;
163 }
164 
dump(int fd) const165 status_t AudioPatchCollection::dump(int fd) const
166 {
167     const size_t SIZE = 256;
168     char buffer[SIZE];
169     snprintf(buffer, SIZE, "\nAudio Patches:\n");
170     write(fd, buffer, strlen(buffer));
171     for (size_t i = 0; i < size(); i++) {
172         valueAt(i)->dump(fd, 2, i);
173     }
174     return NO_ERROR;
175 }
176 
177 }; // namespace android
178