From f5e45186eb4daedc7c33216766637d0dcbd1ebcf Mon Sep 17 00:00:00 2001
From: Dana <Dana_Lee1016@126.com>
Date: 星期三, 28 一月 2026 11:32:31 +0800
Subject: [PATCH] 1.readme
---
readMe.md | 375 +++++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 375 insertions(+), 0 deletions(-)
diff --git a/readMe.md b/readMe.md
new file mode 100644
index 0000000..228bde0
--- /dev/null
+++ b/readMe.md
@@ -0,0 +1,375 @@
+* MediaMuxer 鍚姩鍚庝笉鑳藉啀娣诲姞杞ㄩ亾
+
+* 瑙嗛鍜岄煶棰戠殑鏃堕棿鎴抽渶瑕佹纭悓姝�
+
+
+鐜板湪浠ｇ爜搴旇锛�
+
+* 姝ｇ‘绛夊緟涓や釜杞ㄩ亾閮藉噯澶囧ソ
+
+* 鍚屾鍚姩 MediaMuxer
+
+* 姝ｇ‘鍐欏叆瑙嗛鍜岄煶棰戞暟鎹�
+
+* 閬垮厤鐘舵�佸啿绐佸鑷寸殑閿欒
+
+
+mp4鏂囦欢鏄庢樉鏃堕棿鍔犲揩浜嗭紝鐜板疄涓栫晫1绉掗挓锛屽彲鑳絤p4鏂囦欢鐨勮棰戝氨鏄崐绉掞紝鎵�鏈夊綍涓�鍒嗛挓鐨勮棰憁p4鏂囦欢锛岃棰戝彧鎾埌30绉掑氨涓嶅啀鎾簡
+
+妫�鏌ュ苟淇鏃堕棿鎴宠绠楅棶棰橈紝鍙兘鏄抚鐜囨垨鏃堕棿鎴宠绠椾笉姝ｇ‘锛�
+
+淇鏃堕棿鎴宠绠楋細鏀圭敤瀹為檯鏃堕棿鑰岄潪甯х储寮曪紝纭繚鏃堕棿鎴冲噯纭細
+
+淇鏃堕棿鎴宠绠楋紝浣跨敤瀹為檯鏃堕棿鑰岄潪甯х储寮曪細
+
+UsbCameraRecordManager.java
+
+long聽frameCount聽=聽0;
+
+//聽璁板綍寮�濮嬫椂闂达紙绾崇锛岀敤浜庣簿纭椂闂存埑锛�
+
+long聽recordingStartTimeNs聽=聽System.nanoTime();
+
+long聽frameCount聽=聽0;
+
+UsbCameraRecordManager.java
+
+if聽(videoEncoder聽!=聽null聽&&聽mediaMuxer聽!=聽null)聽{
+
+encodeFrame(buffer,聽frameCount,聽width,聽height);
+
+frameCount++;
+
+encodeFrame(buffer,聽frameCount,聽width,聽height);
+
+if聽(videoEncoder聽!=聽null聽&&聽mediaMuxer聽!=聽null)聽{
+
+//聽璁＄畻瀹為檯缁忚繃鐨勬椂闂达紙寰锛�
+
+long聽elapsedTimeUs聽=聽(System.nanoTime()聽-聽recordingStartTimeNs)聽/聽1000;
+
+encodeFrame(buffer,聽elapsedTimeUs,聽width,聽height);
+
+frameCount++;
+
+UsbCameraRecordManager.java
+
+*聽缂栫爜涓�甯ф暟鎹�
+
+*/
+
+*聽缂栫爜涓�甯ф暟鎹�
+
+*聽@param聽yuvData聽YUV鏁版嵁
+
+*聽@param聽presentationTimeUs聽鏃堕棿鎴筹紙寰锛夛紝鍩轰簬瀹為檯寮�濮嬫椂闂�
+
+*聽@param聽width聽瀹藉害
+
+*聽@param聽height聽楂樺害
+
+*/
+
+淇闊抽鏃堕棿鎴筹紝浣垮叾涓庤棰戞椂闂存埑鍚屾锛�
+
+UsbCameraRecordManager.java
+
++3
+
+/**
+
+//聽褰曞埗寮�濮嬫椂闂达紙绾崇锛夛紝鐢ㄤ簬鏃堕棿鎴冲悓姝�
+
+private聽volatile聽long聽recordingStartTimeNs聽=聽0;
+
+/**
+
+UsbCameraRecordManager.java
+
++1-1
+
+//聽璁板綍寮�濮嬫椂闂达紙绾崇锛岀敤浜庣簿纭椂闂存埑锛�
+
+long聽recordingStartTimeNs聽=聽System.nanoTime();
+
+long聽frameCount聽=聽0;
+
+long聽recordingStartTimeNs聽=聽System.nanoTime();
+
+//聽璁板綍寮�濮嬫椂闂达紙绾崇锛岀敤浜庣簿纭椂闂存埑锛�
+
+recordingStartTimeNs聽=聽System.nanoTime();
+
+long聽frameCount聽=聽0;
+
+UsbCameraRecordManager.java
+
++3-3
+
+byte[]聽audioBuffer聽=聽new聽byte[audioBufferSize];
+
+long聽audioFrameCount聽=聽0;
+
+//聽缂栫爜闊抽鏁版嵁
+
+long聽audioFrameCount聽=聽0;
+
+byte[]聽audioBuffer聽=聽new聽byte[audioBufferSize];
+
+long聽totalSamplesRead聽=聽0;聽//聽鎬婚噰鏍锋暟
+
+//聽缂栫爜闊抽鏁版嵁
+
+UsbCameraRecordManager.java
+
++7-2
+
+*聽缂栫爜闊抽鏁版嵁
+
+*/
+
+private聽void聽encodeAudio(byte[]聽audioData,聽int聽size,聽long聽frameCount)聽{
+
+private聽void聽encodeAudio(byte[]聽audioData,聽int聽size,聽long聽frameCount)聽{
+
+*聽缂栫爜闊抽鏁版嵁
+
+*聽@param聽audioData聽闊抽鏁版嵁
+
+*聽@param聽size聽鏁版嵁澶у皬锛堝瓧鑺傦級
+
+*聽@param聽totalSamples聽鎬婚噰鏍锋暟锛堜粠寮�濮嬪埌鐜板湪鐨勭疮璁￠噰鏍锋暟锛�
+
+*/
+
+鍦ㄥ垱寤烘柊鏂囦欢鏃堕噸缃紑濮嬫椂闂达細
+
+UsbCameraRecordManager.java
+
++3
+
+//聽閲嶆柊鍚姩闊抽褰曞埗
+
+//聽閲嶇疆寮�濮嬫椂闂�
+
+recordingStartTimeNs聽=聽System.nanoTime();
+
+//聽閲嶆柊鍚姩闊抽褰曞埗
+
+宸蹭慨澶嶆椂闂存埑璁＄畻闂銆備富瑕佷慨鏀瑰涓嬶細淇鍐呭锛�
+
+* * *
+
+1. 瑙嗛鏃堕棿鎴充娇鐢ㄥ疄闄呮椂闂达細
+
+
+* 涔嬪墠锛氫娇鐢�(frameIndex * 1000000) / FRAME_RATE聽璁＄畻锛屽亣璁惧浐瀹氬抚鐜�
+
+* 鐜板湪锛氫娇鐢�(System.nanoTime() - recordingStartTimeNs) / 1000锛屽熀浜庡疄闄呯粡杩囨椂闂�
+
+
+1. 闊抽鏃堕棿鎴冲熀浜庨噰鏍锋暟锛�
+
+
+* 浣跨敤聽(totalSamples * 1000000) / SAMPLE_RATE聽璁＄畻
+
+* totalSamples聽鏄疮璁￠噰鏍锋暟锛岀‘淇濇椂闂存埑杩炵画
+
+
+1. 娣诲姞浜嗗綍鍒跺紑濮嬫椂闂磋褰曪細
+
+
+* 浣跨敤聽recordingStartTimeNs聽璁板綍寮�濮嬫椂闂达紙绾崇锛�
+
+* 鍦ㄥ垱寤烘柊鏂囦欢鏃堕噸缃紝纭繚姣忎釜鏂囦欢鐨勬椂闂存埑浠� 0 寮�濮�
+
+
+1. 纭繚鏃堕棿鎴冲悓姝ワ細
+
+
+* 瑙嗛鍜岄煶棰戦兘浠庡悓涓�涓熀鍑嗘椂闂村紑濮�
+
+* 姣忎釜鏂版枃浠剁殑鏃堕棿鎴抽兘浠� 0 寮�濮�
+
+
+淇鍘熺悊锛�
+
+* 闂鍘熷洜锛氫娇鐢ㄥ抚绱㈠紩璁＄畻鏃堕棿鎴筹紝鍋囪鍥哄畾甯х巼銆傚疄闄呴噰闆嗗抚鐜囧彲鑳戒笉鍚岋紝瀵艰嚧鏃堕棿鎴充笉鍑嗙‘
+
+* 瑙ｅ喅鏂规锛氫娇鐢ㄥ疄闄呯粡杩囩殑鏃堕棿璁＄畻鏃堕棿鎴筹紝纭繚鏃堕棿鎴充笌瀹為檯鏃堕棿涓�鑷�
+
+
+鐜板湪锛�
+
+* 瑙嗛鏃堕棿鎴冲熀浜庡疄闄呯粡杩囩殑鏃堕棿
+
+* 闊抽鏃堕棿鎴冲熀浜庡疄闄呰鍙栫殑閲囨牱鏁�
+
+* 涓よ�呴兘浠� 0 寮�濮嬶紝纭繚鍚屾
+
+
+#### 浣跨敤
+
+ private var mediaAidlInterface: IMediaAidlInterface? = null
+ private var serviceConnection: ServiceConnection? = null
+ private var isServiceBound = false
+ private val isServiceBoundState = mutableStateOf(false)
+ serviceConnection = object : ServiceConnection {
+ override fun onServiceConnected(name: ComponentName?, service: IBinder?) {
+ mediaAidlInterface = IMediaAidlInterface.Stub.asInterface(service)
+ isServiceBound = true
+ isServiceBoundState.value = true
+ Timber.d("FloatingService connected")
+ }
+
+ override fun onServiceDisconnected(name: ComponentName?) {
+ mediaAidlInterface = null
+ isServiceBound = false
+ isServiceBoundState.value = false
+ Timber.d("FloatingService disconnected")
+
+ onBindService = {
+ if (!isServiceBoundState.value && serviceConnection != null) {
+ val intent = Intent(this@MainActivity, FloatingService::class.java)
+ bindService(intent, serviceConnection!!, Context.BIND_AUTO_CREATE)
+ Timber.d("Binding FloatingService")
+ }
+ }, }
+ }
+
+ private fun startAndroidRecord() {
+ if (mediaAidlInterface == null) {
+ Timber.w("Service not bound, cannot start Android record")
+ return
+ }
+
+ try {
+ val mediaArgu = MediaArgu().apply {
+ isPush = false
+ isUsedOutCamera = false // Android 鍐呯疆鎽勫儚澶�
+ codeRate = 0
+ frameRate = 0
+ m_screen = MediaArgu.ScreenSolution(640, 480) // 榛樿鍒嗚鲸鐜�
+ recordTime = 0
+ tfCardFlag = 0 // 鍐呴儴瀛樺偍
+ }
+
+ mediaAidlInterface?.registerCallback(callback)
+ mediaAidlInterface?.startMedia(mediaArgu)
+ Timber.d("Started Android camera record")
+ } catch (e: RemoteException) {
+ Timber.e(e, "Error starting Android record")
+ }
+ }
+
+ private fun stopAndroidRecord() {
+ if (mediaAidlInterface == null) {
+ Timber.w("Service not bound, cannot stop Android record")
+ return
+ }
+
+ try {
+ mediaAidlInterface?.stopMedia()
+ Timber.d("Stopped Android camera record")
+ } catch (e: RemoteException) {
+ Timber.e(e, "Error stopping Android record")
+ }
+ }
+
+ private fun startUsbRecord() {
+ if (mediaAidlInterface == null) {
+ Timber.w("Service not bound, cannot start USB record")
+ return
+ }
+
+ try {
+ val mediaArgu = MediaArgu().apply {
+ isPush = false
+ isUsedOutCamera = true // USB 鎽勫儚澶�
+ codeRate = 0
+ frameRate = 0
+ m_screen = MediaArgu.ScreenSolution(640, 480) // 榛樿鍒嗚鲸鐜�
+ recordTime = 0
+ tfCardFlag = 0 // 鍐呴儴瀛樺偍
+ }
+
+ mediaAidlInterface?.registerCallback(callback)
+ mediaAidlInterface?.startMedia(mediaArgu)
+ Timber.d("Started USB camera record")
+ } catch (e: RemoteException) {
+ Timber.e(e, "Error starting USB record")
+ }
+ }
+
+ private fun stopUsbRecord() {
+ if (mediaAidlInterface == null) {
+ Timber.w("Service not bound, cannot stop USB record")
+ return
+ }
+
+ try {
+ mediaAidlInterface?.stopMedia()
+ Timber.d("Stopped USB camera record")
+ } catch (e: RemoteException) {
+ Timber.e(e, "Error stopping USB record")
+ }
+ }
+
+ private fun startUsbPush() {
+ if (mediaAidlInterface == null) {
+ Timber.w("Service not bound, cannot start USB push")
+ return
+ }
+
+ try {
+ val mediaArgu = MediaArgu().apply {
+ isPush = true
+ isUsedOutCamera = true // USB 鎽勫儚澶�
+ codeRate = 0
+ frameRate = 0
+ m_screen = MediaArgu.ScreenSolution(640, 480) // 榛樿鍒嗚鲸鐜�
+ url = "rtmp://192.168.16.143/live/livestream" // TODO: 闇�瑕佽缃疄闄呯殑鎺ㄦ祦鍦板潃
+ userName = ""
+ pwd = ""
+ }
+
+ mediaAidlInterface?.registerCallback(callback)
+ mediaAidlInterface?.startMedia(mediaArgu)
+ Timber.d("Started USB camera push")
+ } catch (e: RemoteException) {
+ Timber.e(e, "Error starting USB push")
+ }
+ }
+
+ private fun stopUsbPush() {
+ if (mediaAidlInterface == null) {
+ Timber.w("Service not bound, cannot stop USB push")
+ return
+ }
+
+ try {
+ mediaAidlInterface?.stopMedia()
+ Timber.d("Stopped USB camera push")
+ } catch (e: RemoteException) {
+ Timber.e(e, "Error stopping USB push")
+ }
+ }
+
+ private fun unbindServiceInternal() {
+ if (isServiceBound && serviceConnection != null) {
+ try {
+ mediaAidlInterface?.unregisterCallback(callback)
+ } catch (e: RemoteException) {
+ Timber.e(e, "Error unregistering callback")
+ }
+ try {
+ unbindService(serviceConnection!!)
+ Timber.d("Unbinding FloatingService")
+ } catch (e: Exception) {
+ Timber.e(e, "Error unbinding service")
+ }
+ isServiceBound = false
+ isServiceBoundState.value = false
+ mediaAidlInterface = null
+ }
+ }
\ No newline at end of file
--
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