From 3a785fe0799319004c234c9d259d1f9b74ca1214 Mon Sep 17 00:00:00 2001
From: Andreas Huber <andih@google.com>
Date: Mon, 14 Mar 2011 10:55:40 -0700
Subject: [PATCH] Experimental support for changing the video surface/texture
 on an active mediaplayer

Change-Id: Ia7a5126e9311dc1c721ab2aef54bd698151c88cd
---
 media/libstagefright/AwesomePlayer.cpp       | 75 +++++++++++++++-----
 media/libstagefright/include/AwesomePlayer.h |  5 ++
 2 files changed, 61 insertions(+), 19 deletions(-)

diff --git a/media/libstagefright/AwesomePlayer.cpp b/media/libstagefright/AwesomePlayer.cpp
index 0de19883f56b7..93d89c904a2a0 100644
--- a/media/libstagefright/AwesomePlayer.cpp
+++ b/media/libstagefright/AwesomePlayer.cpp
@@ -181,7 +181,8 @@ AwesomePlayer::AwesomePlayer()
       mFlags(0),
       mExtractorFlags(0),
       mVideoBuffer(NULL),
-      mDecryptHandle(NULL) {
+      mDecryptHandle(NULL),
+      mLastVideoTimeUs(-1) {
     CHECK_EQ(mClient.connect(), (status_t)OK);
 
     DataSource::RegisterDefaultSniffers();
@@ -467,28 +468,13 @@ void AwesomePlayer::reset_l() {
 
     mVideoRenderer.clear();
 
-    if (mVideoBuffer) {
-        mVideoBuffer->release();
-        mVideoBuffer = NULL;
-    }
-
     if (mRTSPController != NULL) {
         mRTSPController->disconnect();
         mRTSPController.clear();
     }
 
     if (mVideoSource != NULL) {
-        mVideoSource->stop();
-
-        // The following hack is necessary to ensure that the OMX
-        // component is completely released by the time we may try
-        // to instantiate it again.
-        wp<MediaSource> tmp = mVideoSource;
-        mVideoSource.clear();
-        while (tmp.promote() != NULL) {
-            usleep(1000);
-        }
-        IPCThreadState::self()->flushCommands();
+        shutdownVideoDecoder_l();
     }
 
     mDurationUs = -1;
@@ -507,6 +493,7 @@ void AwesomePlayer::reset_l() {
     mFileSource.clear();
 
     mBitrate = -1;
+    mLastVideoTimeUs = -1;
 }
 
 void AwesomePlayer::notifyListener_l(int msg, int ext1, int ext2) {
@@ -1005,7 +992,7 @@ void AwesomePlayer::setSurface(const sp<Surface> &surface) {
     Mutex::Autolock autoLock(mLock);
 
     mSurface = surface;
-    mNativeWindow = surface;
+    setNativeWindow_l(surface);
 }
 
 void AwesomePlayer::setSurfaceTexture(const sp<ISurfaceTexture> &surfaceTexture) {
@@ -1013,9 +1000,57 @@ void AwesomePlayer::setSurfaceTexture(const sp<ISurfaceTexture> &surfaceTexture)
 
     mSurface.clear();
     if (surfaceTexture != NULL) {
-        mNativeWindow = new SurfaceTextureClient(surfaceTexture);
+        setNativeWindow_l(new SurfaceTextureClient(surfaceTexture));
+    }
+}
+
+void AwesomePlayer::shutdownVideoDecoder_l() {
+    if (mVideoBuffer) {
+        mVideoBuffer->release();
+        mVideoBuffer = NULL;
     }
 
+    mVideoSource->stop();
+
+    // The following hack is necessary to ensure that the OMX
+    // component is completely released by the time we may try
+    // to instantiate it again.
+    wp<MediaSource> tmp = mVideoSource;
+    mVideoSource.clear();
+    while (tmp.promote() != NULL) {
+        usleep(1000);
+    }
+    IPCThreadState::self()->flushCommands();
+}
+
+void AwesomePlayer::setNativeWindow_l(const sp<ANativeWindow> &native) {
+    mNativeWindow = native;
+
+    if (mVideoSource == NULL) {
+        return;
+    }
+
+    LOGI("attempting to reconfigure to use new surface");
+
+    bool wasPlaying = (mFlags & PLAYING) != 0;
+
+    pause_l();
+    mVideoRenderer.clear();
+
+    shutdownVideoDecoder_l();
+
+    CHECK_EQ(initVideoDecoder(), (status_t)OK);
+
+    if (mLastVideoTimeUs >= 0) {
+        mSeeking = SEEK;
+        mSeekNotificationSent = true;
+        mSeekTimeUs = mLastVideoTimeUs;
+        mFlags &= ~(AT_EOS | AUDIO_AT_EOS | VIDEO_AT_EOS);
+    }
+
+    if (wasPlaying) {
+        play_l();
+    }
 }
 
 void AwesomePlayer::setAudioSink(
@@ -1358,6 +1393,8 @@ void AwesomePlayer::onVideoEvent() {
     int64_t timeUs;
     CHECK(mVideoBuffer->meta_data()->findInt64(kKeyTime, &timeUs));
 
+    mLastVideoTimeUs = timeUs;
+
     if (mSeeking == SEEK_VIDEO_ONLY) {
         if (mSeekTimeUs > timeUs) {
             LOGI("XXX mSeekTimeUs = %lld us, timeUs = %lld us",
diff --git a/media/libstagefright/include/AwesomePlayer.h b/media/libstagefright/include/AwesomePlayer.h
index b26f2028eda4b..4e7712b088ee5 100644
--- a/media/libstagefright/include/AwesomePlayer.h
+++ b/media/libstagefright/include/AwesomePlayer.h
@@ -219,6 +219,8 @@ private:
     DrmManagerClient *mDrmManagerClient;
     sp<DecryptHandle> mDecryptHandle;
 
+    int64_t mLastVideoTimeUs;
+
     status_t setDataSource_l(
             const char *uri,
             const KeyedVector<String8, String8> *headers = NULL);
@@ -268,6 +270,9 @@ private:
 
     status_t startAudioPlayer_l();
 
+    void shutdownVideoDecoder_l();
+    void setNativeWindow_l(const sp<ANativeWindow> &native);
+
     AwesomePlayer(const AwesomePlayer &);
     AwesomePlayer &operator=(const AwesomePlayer &);
 };