From bf4950aa265ec7b54777d122b27037461638af0f Mon Sep 17 00:00:00 2001
From: Andreas Huber <andih@google.com>
Date: Fri, 16 Nov 2012 10:38:11 -0800
Subject: [wfd] Support a low(er) power state by triggering PAUSE/RESUME.

Change-Id: Ibe42bfa73816bbfeb7e652d435254d0171b89727
related-to-bug: 7638150
---
 .../wifi-display/source/MediaPuller.cpp            | 34 ++++++++++++++++++++--
 1 file changed, 32 insertions(+), 2 deletions(-)

(limited to 'media/libstagefright/wifi-display/source/MediaPuller.cpp')

diff --git a/media/libstagefright/wifi-display/source/MediaPuller.cpp b/media/libstagefright/wifi-display/source/MediaPuller.cpp
index ab69c4a..189bea3 100644
--- a/media/libstagefright/wifi-display/source/MediaPuller.cpp
+++ b/media/libstagefright/wifi-display/source/MediaPuller.cpp
@@ -34,7 +34,8 @@ MediaPuller::MediaPuller(
     : mSource(source),
       mNotify(notify),
       mPullGeneration(0),
-      mIsAudio(false) {
+      mIsAudio(false),
+      mPaused(false) {
     sp<MetaData> meta = source->getFormat();
     const char *mime;
     CHECK(meta->findCString(kKeyMIMEType, &mime));
@@ -71,6 +72,14 @@ void MediaPuller::stopAsync(const sp<AMessage> &notify) {
     msg->post();
 }
 
+void MediaPuller::pause() {
+    (new AMessage(kWhatPause, id()))->post();
+}
+
+void MediaPuller::resume() {
+    (new AMessage(kWhatResume, id()))->post();
+}
+
 void MediaPuller::onMessageReceived(const sp<AMessage> &msg) {
     switch (msg->what()) {
         case kWhatStart:
@@ -95,7 +104,6 @@ void MediaPuller::onMessageReceived(const sp<AMessage> &msg) {
 
             uint32_t replyID;
             CHECK(msg->senderAwaitsResponse(&replyID));
-
             response->postReply(replyID);
             break;
         }
@@ -130,6 +138,16 @@ void MediaPuller::onMessageReceived(const sp<AMessage> &msg) {
             MediaBuffer *mbuf;
             status_t err = mSource->read(&mbuf);
 
+            if (mPaused) {
+                if (err == OK) {
+                    mbuf->release();
+                    mbuf = NULL;
+                }
+
+                schedulePull();
+                break;
+            }
+
             if (err != OK) {
                 if (err == ERROR_END_OF_STREAM) {
                     ALOGI("stream ended.");
@@ -176,6 +194,18 @@ void MediaPuller::onMessageReceived(const sp<AMessage> &msg) {
             break;
         }
 
+        case kWhatPause:
+        {
+            mPaused = true;
+            break;
+        }
+
+        case kWhatResume:
+        {
+            mPaused = false;
+            break;
+        }
+
         default:
             TRESPASS();
     }
-- 
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