Gapless playback, step 1.

Currently able to play Ogg Vorbis, PCM WAV and other lossless files seamlessly
by reusing the initial AudioTrack for subsequent players.

Change-Id: Ie7cf6b9076bdf4f9211574456d192c02c04fecc7

3 files changed, 6 insertions, 0 deletions

diff --git a/include/media/IMediaPlayer.h b/include/media/IMediaPlayer.h
index 39d58ab..00facc5 100644
--- a/include/media/IMediaPlayer.h
+++ b/include/media/IMediaPlayer.h
@@ -64,6 +64,7 @@ public:
     virtual status_t        setParameter(int key, const Parcel& request) = 0;
     virtual status_t        getParameter(int key, Parcel* reply) = 0;
     virtual status_t        setRetransmitEndpoint(const struct sockaddr_in* endpoint) = 0;
+    virtual status_t        setNextPlayer(const sp<IMediaPlayer>& next) = 0;
 
     // Invoke a generic method on the player by using opaque parcels
     // for the request and reply.
diff --git a/include/media/MediaPlayerInterface.h b/include/media/MediaPlayerInterface.h
index 8168dff..d4aa233 100644
--- a/include/media/MediaPlayerInterface.h
+++ b/include/media/MediaPlayerInterface.h
@@ -107,6 +107,7 @@ public:
         virtual void        close() = 0;
 
         virtual status_t    setPlaybackRatePermille(int32_t rate) { return INVALID_OPERATION; }
+        virtual bool        needsTrailingPadding() { return true; }
     };
 
                         MediaPlayerBase() : mCookie(0), mNotify(0) {}
diff --git a/include/media/mediaplayer.h b/include/media/mediaplayer.h
index 9cd5f9f..662dd13 100644
--- a/include/media/mediaplayer.h
+++ b/include/media/mediaplayer.h
@@ -96,6 +96,9 @@ enum media_error_type {
 enum media_info_type {
     // 0xx
     MEDIA_INFO_UNKNOWN = 1,
+    // The player was started because it was used as the next player for another
+    // player, which just completed playback
+    MEDIA_INFO_STARTED_AS_NEXT = 2,
     // 7xx
     // The video is too complex for the decoder: it can't decode frames fast
     // enough. Possibly only the audio plays fine at this stage.
@@ -207,6 +210,7 @@ public:
             status_t        setParameter(int key, const Parcel& request);
             status_t        getParameter(int key, Parcel* reply);
             status_t        setRetransmitEndpoint(const char* addrString, uint16_t port);
+            status_t        setNextMediaPlayer(const sp<MediaPlayer>& player);
 
 private:
             void            clear_l();