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 #include "btif_avrcp_audio_track.h"
19
20 #include <media/AudioTrack.h>
21 #include <utils/StrongPointer.h>
22
23 #include "osi/include/log.h"
24
25 using namespace android;
26
27 typedef struct {
28 android::sp<android::AudioTrack> track;
29 } BtifAvrcpAudioTrack;
30
31 //#define DUMP_PCM_DATA TRUE
32 #if (defined(DUMP_PCM_DATA) && (DUMP_PCM_DATA == TRUE))
33 FILE *outputPcmSampleFile;
34 char outputFilename[50] = "/data/misc/bluedroid/output_sample.pcm";
35 #endif
36
BtifAvrcpAudioTrackCreate(int trackFreq,int channelType)37 void *BtifAvrcpAudioTrackCreate(int trackFreq, int channelType)
38 {
39 LOG_VERBOSE(LOG_TAG, "%s Track.cpp: btCreateTrack freq %d channel %d ",
40 __func__, trackFreq, channelType);
41 sp<android::AudioTrack> track =
42 new android::AudioTrack(AUDIO_STREAM_MUSIC, trackFreq, AUDIO_FORMAT_PCM_16_BIT,
43 channelType, (size_t) 0 /*frameCount*/,
44 (audio_output_flags_t)AUDIO_OUTPUT_FLAG_FAST,
45 NULL /*callback_t*/, NULL /*void* user*/, 0 /*notificationFrames*/,
46 AUDIO_SESSION_ALLOCATE, android::AudioTrack::TRANSFER_SYNC);
47 assert(track != NULL);
48
49 BtifAvrcpAudioTrack *trackHolder = new BtifAvrcpAudioTrack;
50 assert(trackHolder != NULL);
51 trackHolder->track = track;
52
53 if (trackHolder->track->initCheck() != 0)
54 {
55 return nullptr;
56 }
57
58 #if (defined(DUMP_PCM_DATA) && (DUMP_PCM_DATA == TRUE))
59 outputPcmSampleFile = fopen(outputFilename, "ab");
60 #endif
61 trackHolder->track->setVolume(1, 1);
62 return (void *)trackHolder;
63 }
64
BtifAvrcpAudioTrackStart(void * handle)65 void BtifAvrcpAudioTrackStart(void *handle)
66 {
67 assert(handle != NULL);
68 BtifAvrcpAudioTrack *trackHolder = static_cast<BtifAvrcpAudioTrack*>(handle);
69 assert(trackHolder != NULL);
70 assert(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 {
77 if (handle == NULL) {
78 LOG_DEBUG(LOG_TAG, "%s handle is null.", __func__);
79 return;
80 }
81 BtifAvrcpAudioTrack *trackHolder = static_cast<BtifAvrcpAudioTrack*>(handle);
82 if (trackHolder != NULL && trackHolder->track != NULL) {
83 LOG_VERBOSE(LOG_TAG, "%s Track.cpp: btStartTrack", __func__);
84 trackHolder->track->stop();
85 }
86 }
87
BtifAvrcpAudioTrackDelete(void * handle)88 void BtifAvrcpAudioTrackDelete(void *handle)
89 {
90 if (handle == NULL) {
91 LOG_DEBUG(LOG_TAG, "%s handle is null.", __func__);
92 return;
93 }
94 BtifAvrcpAudioTrack *trackHolder = static_cast<BtifAvrcpAudioTrack*>(handle);
95 if (trackHolder != NULL && trackHolder->track != NULL) {
96 LOG_VERBOSE(LOG_TAG, "%s Track.cpp: btStartTrack", __func__);
97 delete trackHolder;
98 }
99
100 #if (defined(DUMP_PCM_DATA) && (DUMP_PCM_DATA == TRUE))
101 if (outputPcmSampleFile)
102 {
103 fclose(outputPcmSampleFile);
104 }
105 outputPcmSampleFile = NULL;
106 #endif
107 }
108
BtifAvrcpAudioTrackPause(void * handle)109 void BtifAvrcpAudioTrackPause(void *handle)
110 {
111 if (handle == NULL) {
112 LOG_DEBUG(LOG_TAG, "%s handle is null.", __func__);
113 return;
114 }
115 BtifAvrcpAudioTrack *trackHolder = static_cast<BtifAvrcpAudioTrack*>(handle);
116 if (trackHolder != NULL && trackHolder->track != NULL) {
117 LOG_VERBOSE(LOG_TAG, "%s Track.cpp: btStartTrack", __func__);
118 trackHolder->track->pause();
119 trackHolder->track->flush();
120 }
121 }
122
BtifAvrcpSetAudioTrackGain(void * handle,float gain)123 void BtifAvrcpSetAudioTrackGain(void *handle, float gain)
124 {
125 if (handle == NULL) {
126 LOG_DEBUG(LOG_TAG, "%s handle is null.", __func__);
127 return;
128 }
129 BtifAvrcpAudioTrack *trackHolder = static_cast<BtifAvrcpAudioTrack*>(handle);
130 if (trackHolder != NULL && trackHolder->track != NULL) {
131 LOG_VERBOSE(LOG_TAG, "%s set gain %f", __func__, gain);
132 trackHolder->track->setVolume(gain);
133 }
134 }
135
BtifAvrcpAudioTrackWriteData(void * handle,void * audioBuffer,int bufferlen)136 int BtifAvrcpAudioTrackWriteData(void *handle, void *audioBuffer, int bufferlen)
137 {
138 BtifAvrcpAudioTrack *trackHolder = static_cast<BtifAvrcpAudioTrack*>(handle);
139 assert(trackHolder != NULL);
140 assert(trackHolder->track != NULL);
141 int retval = -1;
142 #if (defined(DUMP_PCM_DATA) && (DUMP_PCM_DATA == TRUE))
143 if (outputPcmSampleFile)
144 {
145 fwrite ((audioBuffer), 1, (size_t)bufferlen, outputPcmSampleFile);
146 }
147 #endif
148 retval = trackHolder->track->write(audioBuffer, (size_t)bufferlen);
149 LOG_VERBOSE(LOG_TAG, "%s Track.cpp: btWriteData len = %d ret = %d",
150 __func__, bufferlen, retval);
151 return retval;
152 }
153