1 /*
2 * Copyright 2008, The Android Open Source Project
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * * Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * * Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26 // must include config.h first for webkit to fiddle with new/delete
27 #include "config.h"
28 #include "android_npapi.h"
29
30 #include "SkTypes.h"
31 #include "media/AudioTrack.h"
32
33 #include <system/audio.h>
34
35 struct ANPAudioTrack {
36 void* mUser;
37 ANPAudioCallbackProc mProc;
38 android::AudioTrack* mTrack;
39 };
40
toANPFormat(audio_format_t fm)41 static ANPSampleFormat toANPFormat(audio_format_t fm) {
42 switch (fm) {
43 case AUDIO_FORMAT_PCM_16_BIT:
44 return kPCM16Bit_ANPSampleFormat;
45 case AUDIO_FORMAT_PCM_8_BIT:
46 return kPCM8Bit_ANPSampleFormat;
47 default:
48 return kUnknown_ANPSamleFormat;
49 }
50 }
51
fromANPFormat(ANPSampleFormat fm)52 static audio_format_t fromANPFormat(ANPSampleFormat fm) {
53 switch (fm) {
54 case kPCM16Bit_ANPSampleFormat:
55 return AUDIO_FORMAT_PCM_16_BIT;
56 case kPCM8Bit_ANPSampleFormat:
57 return AUDIO_FORMAT_PCM_8_BIT;
58 default:
59 return AUDIO_FORMAT_INVALID;
60 }
61 }
62
callbackProc(int event,void * user,void * info)63 static void callbackProc(int event, void* user, void* info) {
64 ANPAudioTrack* track = reinterpret_cast<ANPAudioTrack*>(user);
65
66 switch (event) {
67 case android::AudioTrack::EVENT_MORE_DATA: {
68 ANPAudioBuffer dst;
69 android::AudioTrack::Buffer* src;
70
71 src = reinterpret_cast<android::AudioTrack::Buffer*>(info);
72 dst.bufferData = src->raw;
73 dst.channelCount = src->channelCount;
74 dst.format = toANPFormat((audio_format_t) src->format);
75 dst.size = src->size;
76 track->mProc(kMoreData_ANPAudioEvent, track->mUser, &dst);
77 // return the updated size field
78 src->size = dst.size;
79 break;
80 }
81 case android::AudioTrack::EVENT_UNDERRUN:
82 track->mProc(kUnderRun_ANPAudioEvent, track->mUser, NULL);
83 break;
84 default:
85 SkDebugf("------ unknown audio event for plugin %d\n", event);
86 break;
87 }
88 }
89
ANPCreateTrack(uint32_t sampleRate,ANPSampleFormat format,int channelCount,ANPAudioCallbackProc proc,void * user)90 static ANPAudioTrack* ANPCreateTrack(uint32_t sampleRate,
91 ANPSampleFormat format,
92 int channelCount,
93 ANPAudioCallbackProc proc,
94 void* user) {
95
96 ANPAudioTrack* track = new ANPAudioTrack;
97
98 track->mUser = user;
99 track->mProc = proc;
100 track->mTrack = new android::AudioTrack(AUDIO_STREAM_MUSIC,
101 sampleRate,
102 fromANPFormat(format),
103 audio_channel_out_mask_from_count(channelCount),
104 0, // frameCount
105 (audio_output_flags_t) 0, // AUDIO_OUTPUT_FLAG_NONE,
106 callbackProc,
107 track,
108 0);
109
110 if (track->mTrack->initCheck() != 0) { // failure
111 delete track->mTrack;
112 delete track;
113 track = NULL;
114 }
115 return track;
116 }
117
ANPDeleteTrack(ANPAudioTrack * track)118 static void ANPDeleteTrack(ANPAudioTrack* track) {
119 if (track) {
120 delete track->mTrack;
121 delete track;
122 }
123 }
124
ANPTrackStart(ANPAudioTrack * track)125 static void ANPTrackStart(ANPAudioTrack* track) {
126 track->mTrack->start();
127 }
128
ANPTrackPause(ANPAudioTrack * track)129 static void ANPTrackPause(ANPAudioTrack* track) {
130 track->mTrack->pause();
131 }
132
ANPTrackStop(ANPAudioTrack * track)133 static void ANPTrackStop(ANPAudioTrack* track) {
134 track->mTrack->stop();
135 }
136
ANPTrackIsStopped(ANPAudioTrack * track)137 static bool ANPTrackIsStopped(ANPAudioTrack* track) {
138 return track->mTrack->stopped();
139 }
140
ANPTrackLatency(ANPAudioTrack * track)141 static uint32_t ANPTrackLatency(ANPAudioTrack* track) {
142 return track->mTrack->latency();
143 }
144
145 ///////////////////////////////////////////////////////////////////////////////
146
ANPAudioTrackInterfaceV0_Init(ANPInterface * value)147 void ANPAudioTrackInterfaceV0_Init(ANPInterface* value) {
148 ANPAudioTrackInterfaceV0* si = reinterpret_cast<ANPAudioTrackInterfaceV0*>(value);
149 si->newTrack = ANPCreateTrack;
150 si->deleteTrack = ANPDeleteTrack;
151 si->start = ANPTrackStart;
152 si->pause = ANPTrackPause;
153 si->stop = ANPTrackStop;
154 si->isStopped = ANPTrackIsStopped;
155 }
156
ANPAudioTrackInterfaceV1_Init(ANPInterface * value)157 void ANPAudioTrackInterfaceV1_Init(ANPInterface* value) {
158 // initialize the functions from the previous interface
159 ANPAudioTrackInterfaceV0_Init(value);
160 // add any new functions or override existing functions
161 ANPAudioTrackInterfaceV1* si = reinterpret_cast<ANPAudioTrackInterfaceV1*>(value);
162 si->trackLatency = ANPTrackLatency;
163 }
164