Add the new Stagefright ANativeWindow OMX codec API.

This change defines the two OMX_SetParameter calls that enable OMX codecs to
interact with ANativeWindows.  It also adds the plumbing to the IOMX, OMX, and
OMXNodeInstance classes to use these new APIs.

This is try 2 for this change, after reverting the first one because it broke
the build.

Change-Id: I94249b72bdb5d5719360f03d7935fcca4ece5028

2 files changed, 58 insertions, 1 deletions

diff --git a/include/media/IOMX.h b/include/media/IOMX.h
index 2f61cbe..1f8ce71 100644
--- a/include/media/IOMX.h
+++ b/include/media/IOMX.h
@@ -19,6 +19,7 @@
 #define ANDROID_IOMX_H_
 
 #include <binder/IInterface.h>
+#include <ui/GraphicBuffer.h>
 #include <utils/List.h>
 #include <utils/String8.h>
 
@@ -78,10 +79,17 @@ public:
             node_id node, OMX_INDEXTYPE index,
             const void *params, size_t size) = 0;
 
+    virtual status_t enableGraphicBuffers(
+            node_id node, OMX_U32 port_index, OMX_BOOL enable) = 0;
+
     virtual status_t useBuffer(
             node_id node, OMX_U32 port_index, const sp<IMemory> &params,
             buffer_id *buffer) = 0;
 
+    virtual status_t useGraphicBuffer(
+            node_id node, OMX_U32 port_index,
+            const sp<GraphicBuffer> &graphicBuffer, buffer_id *buffer) = 0;
+
     // This API clearly only makes sense if the caller lives in the
     // same process as the callee, i.e. is the media_server, as the
     // returned "buffer_data" pointer is just that, a pointer into local
diff --git a/include/media/stagefright/HardwareAPI.h b/include/media/stagefright/HardwareAPI.h
index 221c679..4ded5e8 100644
--- a/include/media/stagefright/HardwareAPI.h
+++ b/include/media/stagefright/HardwareAPI.h
@@ -21,10 +21,60 @@
 #include <media/stagefright/OMXPluginBase.h>
 #include <media/stagefright/VideoRenderer.h>
 #include <surfaceflinger/ISurface.h>
+#include <ui/android_native_buffer.h>
 #include <utils/RefBase.h>
 
 #include <OMX_Component.h>
 
+namespace android {
+
+// A pointer to this struct is passed to the OMX_SetParameter when the extension
+// index for the 'OMX.google.android.index.enableAndroidNativeBuffers' extension
+// is given.
+//
+// When Android native buffer use is disabled for a port (the default state),
+// the OMX node should operate as normal, and expect UseBuffer calls to set its
+// buffers.  This is the mode that will be used when CPU access to the buffer is
+// required.
+//
+// When Android native buffer use has been enabled, the OMX node must support
+// only color formats in the range [OMX_COLOR_FormatAndroidPrivateStart,
+// OMX_COLOR_FormatAndroidPrivateEnd).  The node should then expect to receive
+// UseAndroidNativeBuffer calls (via OMX_SetParameter) rather than UseBuffer
+// calls.
+struct EnableAndroidNativeBuffersParams {
+    OMX_U32 nSize;
+    OMX_VERSIONTYPE nVersion;
+    OMX_U32 nPortIndex;
+    OMX_BOOL enable;
+};
+
+// Color formats in the range [OMX_COLOR_FormatAndroidPrivateStart,
+// OMX_COLOR_FormatAndroidPrivateEnd) will be converted to a gralloc pixel
+// format when used to allocate Android native buffers via gralloc.  The
+// conversion is done by subtracting OMX_COLOR_FormatAndroidPrivateStart from
+// the color format reported by the codec.
+enum {
+    OMX_COLOR_FormatAndroidPrivateStart = 0xA0000000,
+    OMX_COLOR_FormatAndroidPrivateEnd = 0xB0000000,
+};
+
+// A pointer to this struct is passed to OMX_SetParameter when the extension
+// index for the 'OMX.google.android.index.useAndroidNativeBuffer' extension is
+// given.  This call will only be performed if a prior call was made with the
+// 'OMX.google.android.index.enableAndroidNativeBuffers' extension index,
+// enabling use of Android native buffers.
+struct UseAndroidNativeBufferParams {
+    OMX_U32 nSize;
+    OMX_VERSIONTYPE nVersion;
+    OMX_U32 nPortIndex;
+    OMX_PTR pAppPrivate;
+    OMX_BUFFERHEADERTYPE **bufferHeader;
+    const sp<android_native_buffer_t>& nativeBuffer;
+};
+
+}  // namespace android
+
 extern android::VideoRenderer *createRenderer(
         const android::sp<android::ISurface> &surface,
         const char *componentName,
@@ -35,4 +85,3 @@ extern android::VideoRenderer *createRenderer(
 extern android::OMXPluginBase *createOMXPlugin();
 
 #endif  // HARDWARE_API_H_
-