-
Notifications
You must be signed in to change notification settings - Fork 0
/
MediaPlayerVideoFragment.kt
276 lines (236 loc) · 8.82 KB
/
MediaPlayerVideoFragment.kt
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
package com.mustly.wellmedia.video
import android.content.Context
import android.media.AudioAttributes
import android.media.AudioManager
import android.media.MediaPlayer
import android.net.Uri
import android.view.SurfaceHolder
import android.view.View
import android.widget.SeekBar
import androidx.lifecycle.lifecycleScope
import com.mustly.wellmedia.R
import com.mustly.wellmedia.base.BaseBindingFragment
import com.mustly.wellmedia.base.PageRoute
import com.mustly.wellmedia.databinding.FragmentMediaPlayerVideoBinding
import com.mustly.wellmedia.lib.annotation.Route
import com.mustly.wellmedia.lib.medialib.base.PlayState
import com.mustly.wellmedia.lib.medialib.base.isPlayState
import com.mustly.wellmedia.utils.runResult
import com.mustly.wellmedia.utils.stringRes
import com.mustly.wellmedia.utils.uriPath
import kotlinx.coroutines.*
/**
* MediaPlayer 状态说明:
* 当您创建新的 MediaPlayer 时,它处于“Idle”状态
* 此时,您应该通过调用 setDataSource() 初始化该类,使其处于“Initialized”状态
* 然后,您必须使用 prepare() 或 prepareAsync() 方法完成准备工作
* 当 MediaPlayer 准备就绪后,它便会进入“Prepared”状态,这也意味着您可以通过调用 start() 使其播放媒体内容
* 此时,如图所示,您可以通过调用 start()、pause() 和 seekTo() 等方法在“Started”、“Paused”和“PlaybackCompleted”状态之间切换
* 不过请注意,当您调用 stop() 时,除非您再次准备 MediaPlayer,否则将无法再次调用 start(),需要重新走 Prepare 流程
*
* MediaPlayer 状态图:https://developer.android.com/images/mediaplayer_state_diagram.gif?hl=zh-cn
* */
@Route(PageRoute.MEDIA_PLAYER_PLAY_VIDEO)
class MediaPlayerVideoFragment : BaseBindingFragment<FragmentMediaPlayerVideoBinding>() {
companion object {
const val TAG = "MediaPlayerVideo"
}
private var playState = PlayState.UNINITIALIZED
private var isSeekBarChanging = false
private var scheduledJob: Job? = null
val mediaPlayer = MediaPlayer()
override fun initView(rootView: View) {
binding.svVideo.holder.addCallback(object : SurfaceHolder.Callback2 {
override fun surfaceCreated(holder: SurfaceHolder) {
mediaPlayer.setAudioAttributes(
AudioAttributes.Builder()
.setContentType(AudioAttributes.CONTENT_TYPE_MUSIC)
.setUsage(AudioAttributes.USAGE_MEDIA)
.setLegacyStreamType(AudioManager.STREAM_MUSIC)
.build()
)
mediaPlayer.setDisplay(holder)
}
override fun surfaceChanged(holder: SurfaceHolder, format: Int, width: Int, height: Int) {
// 跳转到上次播放的位置进行播放
}
override fun surfaceDestroyed(holder: SurfaceHolder) {
// 记录当前正在播放的位置
}
override fun surfaceRedrawNeeded(holder: SurfaceHolder) {}
})
binding.tvCurrentTime.text = R.string.zero_time_text.stringRes
binding.tvTimeEnd.text = R.string.zero_time_text.stringRes
binding.sbProgress.setOnSeekBarChangeListener(object : SeekBar.OnSeekBarChangeListener {
override fun onProgressChanged(seekBar: SeekBar, progress: Int, fromUser: Boolean) {
binding.tvCurrentTime.text = mediaPlayer.currentPosition.formattedTime()
}
override fun onStartTrackingTouch(seekBar: SeekBar) {
// 通知用户已经开始一个触摸拖动手势
isSeekBarChanging = true
}
override fun onStopTrackingTouch(seekBar: SeekBar) {
// 通知用户触摸手势已经结束
isSeekBarChanging = false
mediaPlayer.seekTo(seekBar.progress)
if (mediaPlayer.notPlay()) {
startPlay()
}
binding.tvCurrentTime.text = seekBar.progress.formattedTime()
}
})
binding.btnPlay.setOnClickListener {
startPlay()
}
binding.btnPause.setOnClickListener {
if (playState.isPlayState(PlayState.PLAYING)) {
stopPlay(true)
}
}
binding.btnReset.setOnClickListener {
if (playState.isPlayState(PlayState.ERROR)) {
mediaPlayer.prePareAndStart()
} else {
stopPlay()
startPlay()
}
}
}
override fun initData(rootView: View) {
mediaPlayer.apply {
mediaPlayer.reset()
// 循环播放
mediaPlayer.isLooping = true
setScreenOnWhilePlaying(true)
setDataSource(rootView.context, Uri.parse(R.raw.tanaka_asuka.uriPath()))
setOnVideoSizeChangedListener { mMediaPlayer, width, height ->
changeViewSize(width, height)
}
prePareAndStart()
/*setOnPreparedListener {
}
setOnErrorListener { _, what, extra ->
Log.e(TAG, "视频解析异常", IllegalStateException("parse error: what=$what, extra=$extra"))
true
}
setOnCompletionListener {
// OnErrorListener 返回 false 时,会调用这个接口
}
prepareAsync()*/
}
}
private fun changeViewSize(videoWidth: Int, videoHeight: Int) {
if (videoWidth <= 0 || videoHeight <= 0) {
return
}
binding.svVideo.post {
val viewWidth = binding.svVideo.measuredWidth
val viewHeight = (videoHeight.toFloat() / videoWidth * viewWidth).toInt()
val lp = binding.svVideo.layoutParams
lp.width = viewWidth
lp.height = viewHeight
binding.svVideo.layoutParams = lp
}
}
private fun MediaPlayer.prePareAndStart() {
lifecycleScope.runResult(
doOnIo = {
prepare()
},
doOnSuccess = {
playState = PlayState.PREPARED
realStartPlay()
},
doOnFailure = {
playState = PlayState.ERROR
}
)
}
override fun onResume() {
super.onResume()
startPlay()
}
override fun onPause() {
super.onPause()
stopPlay(true)
}
override fun onDestroy() {
super.onDestroy()
if (mediaPlayer.isPlaying) {
mediaPlayer.stop()
}
mediaPlayer.release()
stopCheckTime()
}
private fun MediaPlayer.notPlay(): Boolean {
return playState.isPlayState(PlayState.PREPARED) || playState.isPlayState(PlayState.PAUSED)
}
// 毫秒转成格式化的时间字符串
private fun Int.formattedTime(): String {
if (this <= 0) {
return "00:00"
}
val minutes = this / 1000 / 60
val seconds = this / 1000 % 60
return "${checkTimeText(minutes)}:${checkTimeText(seconds)}"
}
private fun checkTimeText(timeNumber: Int) = if (timeNumber in 0..9) {
"0$timeNumber"
} else {
"$timeNumber"
}
private fun startCheckTime(action: () -> Unit) {
stopCheckTime()
scheduledJob = lifecycleScope.launch(Dispatchers.IO) {
while (true) {
withContext(Dispatchers.Main) {
action.invoke()
}
// 500 毫秒,刷新一次计时
delay(500)
}
}
}
private fun startPlay() {
if (playState == PlayState.PLAYING) {
return
}
if (playState.isPlayState(PlayState.UNINITIALIZED)) {
mediaPlayer.prePareAndStart()
return
}
if (playState.isPlayState(PlayState.STOPPED)) {
mediaPlayer.seekTo(0)
}
if (mediaPlayer.notPlay()) {
realStartPlay()
}
}
private fun realStartPlay() {
binding.sbProgress.max = mediaPlayer.duration
binding.tvTimeEnd.text = mediaPlayer.duration.formattedTime()
mediaPlayer.start()
startCheckTime {
binding.tvCurrentTime.text = mediaPlayer.currentPosition.formattedTime()
binding.sbProgress.progress = mediaPlayer.currentPosition
}
playState = PlayState.PLAYING
}
private fun stopPlay(isPaused: Boolean = false) {
if (isPaused) {
mediaPlayer.pause()
playState = PlayState.PAUSED
} else {
mediaPlayer.stop()
playState = PlayState.UNINITIALIZED
}
stopCheckTime()
}
private fun stopCheckTime() {
scheduledJob?.apply {
if (!isCancelled) {
cancel()
}
}
}
}