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
24#include <log/log.h>
25#include <utils/String8.h>
26
27namespace android {
28
29AudioPatch::AudioPatch(const struct audio_patch *patch, uid_t uid) :
30    mHandle(HandleGenerator<audio_patch_handle_t>::getNextHandle()),
31    mPatch(*patch),
32    mUid(uid),
33    mAfPatchHandle(AUDIO_PATCH_HANDLE_NONE)
34{
35}
36
37status_t AudioPatch::dump(int fd, int spaces, int index) const
38{
39    const size_t SIZE = 256;
40    char buffer[SIZE];
41    String8 result;
42
43    snprintf(buffer, SIZE, "%*sAudio patch %d:\n", spaces, "", index+1);
44    result.append(buffer);
45    snprintf(buffer, SIZE, "%*s- handle: %2d\n", spaces, "", mHandle);
46    result.append(buffer);
47    snprintf(buffer, SIZE, "%*s- audio flinger handle: %2d\n", spaces, "", mAfPatchHandle);
48    result.append(buffer);
49    snprintf(buffer, SIZE, "%*s- owner uid: %2d\n", spaces, "", mUid);
50    result.append(buffer);
51    snprintf(buffer, SIZE, "%*s- %d sources:\n", spaces, "", mPatch.num_sources);
52    result.append(buffer);
53    for (size_t i = 0; i < mPatch.num_sources; i++) {
54        if (mPatch.sources[i].type == AUDIO_PORT_TYPE_DEVICE) {
55            std::string device;
56            deviceToString(mPatch.sources[i].ext.device.type, device);
57            snprintf(buffer, SIZE, "%*s- Device ID %d %s\n", spaces + 2, "",
58                     mPatch.sources[i].id,
59                     device.c_str());
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            std::string device;
71            deviceToString(mPatch.sinks[i].ext.device.type, device);
72            snprintf(buffer, SIZE, "%*s- Device ID %d %s\n", spaces + 2, "",
73                     mPatch.sinks[i].id,
74                     device.c_str());
75        } else {
76            snprintf(buffer, SIZE, "%*s- Mix ID %d I/O handle %d\n", spaces + 2, "",
77                     mPatch.sinks[i].id, mPatch.sinks[i].ext.mix.handle);
78        }
79        result.append(buffer);
80    }
81
82    write(fd, result.string(), result.size());
83    return NO_ERROR;
84}
85
86status_t AudioPatchCollection::addAudioPatch(audio_patch_handle_t handle,
87                                             const sp<AudioPatch>& patch)
88{
89    ssize_t index = indexOfKey(handle);
90
91    if (index >= 0) {
92        ALOGW("addAudioPatch() patch %d already in", handle);
93        return ALREADY_EXISTS;
94    }
95    add(handle, patch);
96    ALOGV("addAudioPatch() handle %d af handle %d num_sources %d num_sinks %d source handle %d"
97            "sink handle %d",
98          handle, patch->mAfPatchHandle, patch->mPatch.num_sources, patch->mPatch.num_sinks,
99          patch->mPatch.sources[0].id, patch->mPatch.sinks[0].id);
100    return NO_ERROR;
101}
102
103status_t AudioPatchCollection::removeAudioPatch(audio_patch_handle_t handle)
104{
105    ssize_t index = indexOfKey(handle);
106
107    if (index < 0) {
108        ALOGW("removeAudioPatch() patch %d not in", handle);
109        return ALREADY_EXISTS;
110    }
111    ALOGV("removeAudioPatch() handle %d af handle %d", handle, valueAt(index)->mAfPatchHandle);
112    removeItemsAt(index);
113    return NO_ERROR;
114}
115
116status_t AudioPatchCollection::listAudioPatches(unsigned int *num_patches,
117                                                struct audio_patch *patches) const
118{
119    if (num_patches == NULL || (*num_patches != 0 && patches == NULL)) {
120        return BAD_VALUE;
121    }
122    ALOGV("listAudioPatches() num_patches %d patches %p available patches %zu",
123          *num_patches, patches, size());
124    if (patches == NULL) {
125        *num_patches = 0;
126    }
127
128    size_t patchesWritten = 0;
129    size_t patchesMax = *num_patches;
130    *num_patches = 0;
131    for (size_t patchIndex = 0; patchIndex < size(); patchIndex++) {
132        // do not report patches with AUDIO_DEVICE_IN_STUB as source or
133        // AUDIO_DEVICE_OUT_STUB as sink as those devices are used by stub HALs by convention
134        const sp<AudioPatch> patch = valueAt(patchIndex);
135        bool skip = false;
136        for (size_t srcIndex = 0; srcIndex < patch->mPatch.num_sources && !skip; srcIndex++) {
137            if (patch->mPatch.sources[srcIndex].type == AUDIO_PORT_TYPE_DEVICE &&
138                    patch->mPatch.sources[srcIndex].ext.device.type == AUDIO_DEVICE_IN_STUB) {
139                skip = true;
140            }
141        }
142        for (size_t sinkIndex = 0; sinkIndex < patch->mPatch.num_sinks && !skip; sinkIndex++) {
143            if (patch->mPatch.sinks[sinkIndex].type == AUDIO_PORT_TYPE_DEVICE &&
144                    patch->mPatch.sinks[sinkIndex].ext.device.type == AUDIO_DEVICE_OUT_STUB) {
145                skip = true;
146            }
147        }
148        if (skip) {
149            continue; // to next audio patch
150        }
151        if (patchesWritten < patchesMax) {
152            patches[patchesWritten] = patch->mPatch;
153            patches[patchesWritten++].id = patch->mHandle;
154        }
155        (*num_patches)++;
156        ALOGV("listAudioPatches() patch %zu num_sources %d num_sinks %d",
157              patchIndex, patch->mPatch.num_sources, patch->mPatch.num_sinks);
158    }
159
160    ALOGV("listAudioPatches() got %zu patches needed %d", patchesWritten, *num_patches);
161    return NO_ERROR;
162}
163
164status_t AudioPatchCollection::dump(int fd) const
165{
166    const size_t SIZE = 256;
167    char buffer[SIZE];
168    snprintf(buffer, SIZE, "\nAudio Patches:\n");
169    write(fd, buffer, strlen(buffer));
170    for (size_t i = 0; i < size(); i++) {
171        valueAt(i)->dump(fd, 2, i);
172    }
173    return NO_ERROR;
174}
175
176} // namespace android
177