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1/*
2* Copyright 2020 Google Inc.
3*
4* Use of this source code is governed by a BSD-style license that can be
5* found in the LICENSE file.
6*/
7
8#include "include/core/SkData.h"
9#include "modules/audioplayer/SkAudioPlayer.h"
10
11#if defined(SK_BUILD_FOR_MAC) || defined(SK_BUILD_FOR_IOS)
12
13#ifdef SK_BUILD_FOR_MAC
14#include <AVFoundation/AVFoundation.h>
15#endif
16
17#ifdef SK_BUILD_FOR_IOS
18// ???
19#endif
20
21class SkAudioPlayer_Mac : public SkAudioPlayer {
22public:
23    SkAudioPlayer_Mac(AVAudioPlayer* player, sk_sp<SkData> data)
24        : fPlayer(player)
25        , fData(std::move(data))
26    {
27        fPlayer.enableRate = YES;
28        [fPlayer prepareToPlay];
29    }
30
31    ~SkAudioPlayer_Mac() override {
32     //   [fPlayer release];
33    }
34
35    double onGetDuration() const override { return [fPlayer duration]; }
36
37    double onGetTime() const override { return fPlayer.currentTime; }
38
39    double onSetTime(double t) override {
40        bool wasPlaying = this->isPlaying();
41        if (wasPlaying) {
42            [fPlayer pause];
43        }
44        fPlayer.currentTime = t;
45        if (wasPlaying) {
46            [fPlayer play];
47        }
48        return fPlayer.currentTime;
49    }
50
51
52    State onSetState(State state) override {
53        switch (state) {
54            case State::kPlaying: [fPlayer play];  break;
55            case State::kStopped: [fPlayer stop];  break;
56            case State::kPaused:  [fPlayer pause]; break;
57        }
58        return state;
59    }
60
61    float onSetRate(float r) override { fPlayer.rate = r; return r; }
62
63    float onSetVolume(float v) override { fPlayer.volume = v; return v; }
64
65private:
66    AVAudioPlayer*  fPlayer;
67    sk_sp<SkData>   fData;  // we hold this onbehalf of the player's NSData
68};
69
70std::unique_ptr<SkAudioPlayer> SkAudioPlayer::Make(sk_sp<SkData> src) {
71    // The NSData does not own the actual buffer (src), but our subclass will
72
73    NSData* data = [[NSData alloc] initWithBytesNoCopy:(void*)src->data() length:src->size()];
74    AVAudioPlayer* player = [[AVAudioPlayer alloc] initWithData:data error:nil];
75    [data release];
76
77    if (player) {
78        return std::unique_ptr<SkAudioPlayer>(new SkAudioPlayer_Mac(player, std::move(src)));
79    }
80    return nullptr;
81}
82
83#endif
84