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_NDEBUG 0
18 #define LOG_TAG "bt_btif_avrcp_audio_track"
19
20 #include "btif_avrcp_audio_track.h"
21
22 #include <base/logging.h>
23 #include <media/AudioTrack.h>
24 #include <utils/StrongPointer.h>
25
26 #include "bt_target.h"
27 #include "osi/include/log.h"
28
29 using namespace android;
30
31 typedef struct { android::sp<android::AudioTrack> track; } BtifAvrcpAudioTrack;
32
33 #if (DUMP_PCM_DATA == TRUE)
34 FILE* outputPcmSampleFile;
35 char outputFilename[50] = "/data/misc/bluedroid/output_sample.pcm";
36 #endif
37
BtifAvrcpAudioTrackCreate(int trackFreq,int channelType)38 void* BtifAvrcpAudioTrackCreate(int trackFreq, int channelType) {
39 LOG_VERBOSE(LOG_TAG, "%s Track.cpp: btCreateTrack freq %d channel %d ",
40 __func__, trackFreq, channelType);
41 sp<android::AudioTrack> track = new android::AudioTrack(
42 AUDIO_STREAM_MUSIC, trackFreq, AUDIO_FORMAT_PCM_16_BIT, channelType,
43 (size_t)0 /*frameCount*/, (audio_output_flags_t)AUDIO_OUTPUT_FLAG_FAST,
44 NULL /*callback_t*/, NULL /*void* user*/, 0 /*notificationFrames*/,
45 AUDIO_SESSION_ALLOCATE, android::AudioTrack::TRANSFER_SYNC);
46 CHECK(track != NULL);
47
48 BtifAvrcpAudioTrack* trackHolder = new BtifAvrcpAudioTrack;
49 CHECK(trackHolder != NULL);
50 trackHolder->track = track;
51
52 if (trackHolder->track->initCheck() != 0) {
53 return nullptr;
54 }
55
56 #if (DUMP_PCM_DATA == TRUE)
57 outputPcmSampleFile = fopen(outputFilename, "ab");
58 #endif
59 trackHolder->track->setVolume(1, 1);
60 return (void*)trackHolder;
61 }
62
BtifAvrcpAudioTrackStart(void * handle)63 void BtifAvrcpAudioTrackStart(void* handle) {
64 if (handle == NULL) {
65 LOG_ERROR(LOG_TAG, "%s: handle is null!", __func__);
66 return;
67 }
68 BtifAvrcpAudioTrack* trackHolder = static_cast<BtifAvrcpAudioTrack*>(handle);
69 CHECK(trackHolder != NULL);
70 CHECK(trackHolder->track != NULL);
71 LOG_VERBOSE(LOG_TAG, "%s Track.cpp: btStartTrack", __func__);
72 trackHolder->track->start();
73 }
74
BtifAvrcpAudioTrackStop(void * handle)75 void BtifAvrcpAudioTrackStop(void* handle) {
76 if (handle == NULL) {
77 LOG_DEBUG(LOG_TAG, "%s handle is null.", __func__);
78 return;
79 }
80 BtifAvrcpAudioTrack* trackHolder = static_cast<BtifAvrcpAudioTrack*>(handle);
81 if (trackHolder != NULL && trackHolder->track != NULL) {
82 LOG_VERBOSE(LOG_TAG, "%s Track.cpp: btStartTrack", __func__);
83 trackHolder->track->stop();
84 }
85 }
86
BtifAvrcpAudioTrackDelete(void * handle)87 void BtifAvrcpAudioTrackDelete(void* handle) {
88 if (handle == NULL) {
89 LOG_DEBUG(LOG_TAG, "%s handle is null.", __func__);
90 return;
91 }
92 BtifAvrcpAudioTrack* trackHolder = static_cast<BtifAvrcpAudioTrack*>(handle);
93 if (trackHolder != NULL && trackHolder->track != NULL) {
94 LOG_VERBOSE(LOG_TAG, "%s Track.cpp: btStartTrack", __func__);
95 delete trackHolder;
96 }
97
98 #if (DUMP_PCM_DATA == TRUE)
99 if (outputPcmSampleFile) {
100 fclose(outputPcmSampleFile);
101 }
102 outputPcmSampleFile = NULL;
103 #endif
104 }
105
BtifAvrcpAudioTrackPause(void * handle)106 void BtifAvrcpAudioTrackPause(void* handle) {
107 if (handle == NULL) {
108 LOG_DEBUG(LOG_TAG, "%s handle is null.", __func__);
109 return;
110 }
111 BtifAvrcpAudioTrack* trackHolder = static_cast<BtifAvrcpAudioTrack*>(handle);
112 if (trackHolder != NULL && trackHolder->track != NULL) {
113 LOG_VERBOSE(LOG_TAG, "%s Track.cpp: btStartTrack", __func__);
114 trackHolder->track->pause();
115 trackHolder->track->flush();
116 }
117 }
118
BtifAvrcpSetAudioTrackGain(void * handle,float gain)119 void BtifAvrcpSetAudioTrackGain(void* handle, float gain) {
120 if (handle == NULL) {
121 LOG_DEBUG(LOG_TAG, "%s handle is null.", __func__);
122 return;
123 }
124 BtifAvrcpAudioTrack* trackHolder = static_cast<BtifAvrcpAudioTrack*>(handle);
125 if (trackHolder != NULL && trackHolder->track != NULL) {
126 LOG_VERBOSE(LOG_TAG, "%s set gain %f", __func__, gain);
127 trackHolder->track->setVolume(gain);
128 }
129 }
130
BtifAvrcpAudioTrackWriteData(void * handle,void * audioBuffer,int bufferlen)131 int BtifAvrcpAudioTrackWriteData(void* handle, void* audioBuffer,
132 int bufferlen) {
133 BtifAvrcpAudioTrack* trackHolder = static_cast<BtifAvrcpAudioTrack*>(handle);
134 CHECK(trackHolder != NULL);
135 CHECK(trackHolder->track != NULL);
136 int retval = -1;
137 #if (DUMP_PCM_DATA == TRUE)
138 if (outputPcmSampleFile) {
139 fwrite((audioBuffer), 1, (size_t)bufferlen, outputPcmSampleFile);
140 }
141 #endif
142 retval = trackHolder->track->write(audioBuffer, (size_t)bufferlen);
143 LOG_VERBOSE(LOG_TAG, "%s Track.cpp: btWriteData len = %d ret = %d", __func__,
144 bufferlen, retval);
145 return retval;
146 }
147