Merge "Audio policy manager changes for audio effects" into gingerbread
diff --git a/include/media/stagefright/AudioPlayer.h b/include/media/stagefright/AudioPlayer.h
index 9af5871..9a09586 100644
--- a/include/media/stagefright/AudioPlayer.h
+++ b/include/media/stagefright/AudioPlayer.h
@@ -86,6 +86,10 @@
 
     bool mStarted;
 
+    bool mIsFirstBuffer;
+    status_t mFirstBufferResult;
+    MediaBuffer *mFirstBuffer;
+
     sp<MediaPlayerBase::AudioSink> mAudioSink;
 
     static void AudioCallback(int event, void *user, void *info);
diff --git a/media/libstagefright/AudioPlayer.cpp b/media/libstagefright/AudioPlayer.cpp
index b79ba13..b7bde6b 100644
--- a/media/libstagefright/AudioPlayer.cpp
+++ b/media/libstagefright/AudioPlayer.cpp
@@ -41,6 +41,9 @@
       mReachedEOS(false),
       mFinalStatus(OK),
       mStarted(false),
+      mIsFirstBuffer(false),
+      mFirstBufferResult(OK),
+      mFirstBuffer(NULL),
       mAudioSink(audioSink) {
 }
 
@@ -68,6 +71,24 @@
         }
     }
 
+    // We allow an optional INFO_FORMAT_CHANGED at the very beginning
+    // of playback, if there is one, getFormat below will retrieve the
+    // updated format, if there isn't, we'll stash away the valid buffer
+    // of data to be used on the first audio callback.
+
+    CHECK(mFirstBuffer == NULL);
+
+    mFirstBufferResult = mSource->read(&mFirstBuffer);
+    if (mFirstBufferResult == INFO_FORMAT_CHANGED) {
+        LOGV("INFO_FORMAT_CHANGED!!!");
+
+        CHECK(mFirstBuffer == NULL);
+        mFirstBufferResult = OK;
+        mIsFirstBuffer = false;
+    } else {
+        mIsFirstBuffer = true;
+    }
+
     sp<MetaData> format = mSource->getFormat();
     const char *mime;
     bool success = format->findCString(kKeyMIMEType, &mime);
@@ -87,6 +108,11 @@
                 DEFAULT_AUDIOSINK_BUFFERCOUNT,
                 &AudioPlayer::AudioSinkCallback, this);
         if (err != OK) {
+            if (mFirstBuffer != NULL) {
+                mFirstBuffer->release();
+                mFirstBuffer = NULL;
+            }
+
             if (!sourceAlreadyStarted) {
                 mSource->stop();
             }
@@ -110,6 +136,11 @@
             delete mAudioTrack;
             mAudioTrack = NULL;
 
+            if (mFirstBuffer != NULL) {
+                mFirstBuffer->release();
+                mFirstBuffer = NULL;
+            }
+
             if (!sourceAlreadyStarted) {
                 mSource->stop();
             }
@@ -163,6 +194,12 @@
 
     // Make sure to release any buffer we hold onto so that the
     // source is able to stop().
+
+    if (mFirstBuffer != NULL) {
+        mFirstBuffer->release();
+        mFirstBuffer = NULL;
+    }
+
     if (mInputBuffer != NULL) {
         LOGV("AudioPlayer releasing input buffer.");
 
@@ -247,6 +284,14 @@
             Mutex::Autolock autoLock(mLock);
 
             if (mSeeking) {
+                if (mIsFirstBuffer) {
+                    if (mFirstBuffer != NULL) {
+                        mFirstBuffer->release();
+                        mFirstBuffer = NULL;
+                    }
+                    mIsFirstBuffer = false;
+                }
+
                 options.setSeekTo(mSeekTimeUs);
 
                 if (mInputBuffer != NULL) {
@@ -259,7 +304,17 @@
         }
 
         if (mInputBuffer == NULL) {
-            status_t err = mSource->read(&mInputBuffer, &options);
+            status_t err;
+
+            if (mIsFirstBuffer) {
+                mInputBuffer = mFirstBuffer;
+                mFirstBuffer = NULL;
+                err = mFirstBufferResult;
+
+                mIsFirstBuffer = false;
+            } else {
+                err = mSource->read(&mInputBuffer, &options);
+            }
 
             CHECK((err == OK && mInputBuffer != NULL)
                    || (err != OK && mInputBuffer == NULL));
diff --git a/media/libstagefright/codecs/aacdec/AACDecoder.cpp b/media/libstagefright/codecs/aacdec/AACDecoder.cpp
index f3b281f..8ae1135 100644
--- a/media/libstagefright/codecs/aacdec/AACDecoder.cpp
+++ b/media/libstagefright/codecs/aacdec/AACDecoder.cpp
@@ -99,15 +99,6 @@
                 != MP4AUDEC_SUCCESS) {
             return ERROR_UNSUPPORTED;
         }
-
-        // Check on the sampling rate to see whether it is changed.
-        int32_t sampleRate;
-        CHECK(mMeta->findInt32(kKeySampleRate, &sampleRate));
-        if (mConfig->samplingRate != sampleRate) {
-            mMeta->setInt32(kKeySampleRate, mConfig->samplingRate);
-            LOGW("Sample rate was %d, but now is %d",
-                    sampleRate, mConfig->samplingRate);
-        }
     }
     return OK;
 }
@@ -215,6 +206,19 @@
 
     Int decoderErr = PVMP4AudioDecodeFrame(mConfig, mDecoderBuf);
 
+    // Check on the sampling rate to see whether it is changed.
+    int32_t sampleRate;
+    CHECK(mMeta->findInt32(kKeySampleRate, &sampleRate));
+    if (mConfig->samplingRate != sampleRate) {
+        mMeta->setInt32(kKeySampleRate, mConfig->samplingRate);
+        LOGW("Sample rate was %d, but now is %d",
+                sampleRate, mConfig->samplingRate);
+        buffer->release();
+        mInputBuffer->release();
+        mInputBuffer = NULL;
+        return INFO_FORMAT_CHANGED;
+    }
+
     size_t numOutBytes =
         mConfig->frameLength * sizeof(int16_t) * mConfig->desiredChannels;
     if (mConfig->aacPlusUpsamplingFactor == 2) {