From e6109e2f10b43c2cc2561c6fd6633b5f988bd7a9 Mon Sep 17 00:00:00 2001
From: Lajos Molnar <lajos@google.com>
Date: Fri, 10 Apr 2015 17:18:22 -0700
Subject: mediaplayer: support async mode for widevine legacy mode

Bug: 14679336
Change-Id: Id224eb8c31ec148ca9a144758cc56ddbf5465f5c
---
 .../nuplayer/NuPlayerDecoder.cpp                     | 20 ++++++--------------
 media/libstagefright/MediaCodec.cpp                  | 16 +++++++++++++++-
 2 files changed, 21 insertions(+), 15 deletions(-)

(limited to 'media')

diff --git a/media/libmediaplayerservice/nuplayer/NuPlayerDecoder.cpp b/media/libmediaplayerservice/nuplayer/NuPlayerDecoder.cpp
index cb6954d..3fff1e6 100644
--- a/media/libmediaplayerservice/nuplayer/NuPlayerDecoder.cpp
+++ b/media/libmediaplayerservice/nuplayer/NuPlayerDecoder.cpp
@@ -244,15 +244,7 @@ void NuPlayer::Decoder::onConfigure(const sp<AMessage> &format) {
         return;
     }
 
-    // the following should work after start
-//    CHECK_EQ((status_t)OK, mCodec->getInputBuffers(&mInputBuffers));
     releaseAndResetMediaBuffers();
-//    CHECK_EQ((status_t)OK, mCodec->getOutputBuffers(&mOutputBuffers));
-//    ALOGV("[%s] got %zu input and %zu output buffers",
-//            mComponentName.c_str(),
-//            mInputBuffers.size(),
-//            mOutputBuffers.size());
-
 
     mPaused = false;
     mResumePending = false;
@@ -262,16 +254,14 @@ void NuPlayer::Decoder::onSetRenderer(const sp<Renderer> &renderer) {
     bool hadNoRenderer = (mRenderer == NULL);
     mRenderer = renderer;
     if (hadNoRenderer && mRenderer != NULL) {
-        requestCodecNotification();
+        // this means that the widevine legacy source is ready
+        onRequestInputBuffers();
     }
 }
 
 void NuPlayer::Decoder::onGetInputBuffers(
         Vector<sp<ABuffer> > *dstBuffers) {
-    dstBuffers->clear();
-    for (size_t i = 0; i < mInputBuffers.size(); i++) {
-        dstBuffers->push(mInputBuffers[i]);
-    }
+    CHECK_EQ((status_t)OK, mCodec->getWidevineLegacyBuffers(dstBuffers));
 }
 
 void NuPlayer::Decoder::onResume(bool notifyComplete) {
@@ -367,7 +357,9 @@ void NuPlayer::Decoder::onShutdown(bool notifyComplete) {
 }
 
 void NuPlayer::Decoder::doRequestBuffers() {
-    if (isDiscontinuityPending()) {
+    // mRenderer is only NULL if we have a legacy widevine source that
+    // is not yet ready. In this case we must not fetch input.
+    if (isDiscontinuityPending() || mRenderer == NULL) {
         return;
     }
     status_t err = OK;
diff --git a/media/libstagefright/MediaCodec.cpp b/media/libstagefright/MediaCodec.cpp
index 8186f63..85b1f6b 100644
--- a/media/libstagefright/MediaCodec.cpp
+++ b/media/libstagefright/MediaCodec.cpp
@@ -546,6 +546,16 @@ status_t MediaCodec::getName(AString *name) const {
     return OK;
 }
 
+status_t MediaCodec::getWidevineLegacyBuffers(Vector<sp<ABuffer> > *buffers) const {
+    sp<AMessage> msg = new AMessage(kWhatGetBuffers, this);
+    msg->setInt32("portIndex", kPortIndexInput);
+    msg->setPointer("buffers", buffers);
+    msg->setInt32("widevine", true);
+
+    sp<AMessage> response;
+    return PostAndAwaitResponse(msg, &response);
+}
+
 status_t MediaCodec::getInputBuffers(Vector<sp<ABuffer> > *buffers) const {
     sp<AMessage> msg = new AMessage(kWhatGetBuffers, this);
     msg->setInt32("portIndex", kPortIndexInput);
@@ -1602,8 +1612,12 @@ void MediaCodec::onMessageReceived(const sp<AMessage> &msg) {
         {
             sp<AReplyToken> replyID;
             CHECK(msg->senderAwaitsResponse(&replyID));
+            // Unfortunately widevine legacy source requires knowing all of the
+            // codec input buffers, so we have to provide them even in async mode.
+            int32_t widevine = 0;
+            msg->findInt32("widevine", &widevine);
 
-            if (!isExecuting() || (mFlags & kFlagIsAsync)) {
+            if (!isExecuting() || ((mFlags & kFlagIsAsync) && !widevine)) {
                 PostReplyWithError(replyID, INVALID_OPERATION);
                 break;
             } else if (mFlags & kFlagStickyError) {
-- 
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