From acb7b5dfc804d2e6b2e75b688f536fd38d75641a Mon Sep 17 00:00:00 2001
From: Pannag Sanketi <psanketi@google.com>
Date: Fri, 10 Jun 2011 18:30:30 -0700
Subject: [PATCH] Adding SurfaceEncoder for encoding FilterFrames

Adding SurfaceEncoder which can be used to encode
custom frame data. In a sense, it is reverse
of what SurfaceTexture does.

SurfaceEncoder takes in frames from a native window and
passes them to an encoder, thus acting like a MediaSource.
It uses GRAlloc buffers underneath for passing data.
The client side sets the geometry, format in the beginning,
which cannot be changed while the recording is going on.

Currently, there is no common pixel format that both
GRAlloc and HAL understand.
Also, the encoder cannot encode using the data from the GRAlloc
buffers.

The SurfaceEncoder_test examines mainly the buffer passage
since true encoding cannot be done at this point.
SimpleDummyRecorder 'reads' the frames in the same thread
as the start(), whereas DummyRecorder 'reads' in a separate
thread much like the MPEG4Writer. The test with DummyRecorder
is much closer to the real encoding implementation.

Related to bug id: 4529323

Change-Id: I58ec19a150f8fe4d6195196dc44f55002b46c7c8
---
 include/ui/PixelFormat.h | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/include/ui/PixelFormat.h b/include/ui/PixelFormat.h
index f46f25c36..848c5a114 100644
--- a/include/ui/PixelFormat.h
+++ b/include/ui/PixelFormat.h
@@ -55,7 +55,7 @@ enum {
 
     PIXEL_FORMAT_OPAQUE         = -1,
         // System chooses an opaque format (no alpha bits required)
-    
+
     // real pixel formats supported for rendering -----------------------------
 
     PIXEL_FORMAT_RGBA_8888   = HAL_PIXEL_FORMAT_RGBA_8888,  // 4x8-bit RGBA
@@ -84,7 +84,7 @@ struct PixelFormatInfo
         INDEX_GREEN   = 2,
         INDEX_BLUE    = 3
     };
-    
+
     enum { // components
         ALPHA               = 1,
         RGB                 = 2,
@@ -98,10 +98,10 @@ struct PixelFormatInfo
         uint8_t h;
         uint8_t l;
     };
-    
+
     inline PixelFormatInfo() : version(sizeof(PixelFormatInfo)) { }
     size_t getScanlineSize(unsigned int width) const;
-    size_t getSize(size_t ci) const { 
+    size_t getSize(size_t ci) const {
         return (ci <= 3) ? (cinfo[ci].h - cinfo[ci].l) : 0;
     }
     size_t      version;
@@ -112,7 +112,7 @@ struct PixelFormatInfo
         szinfo      cinfo[4];
         struct {
             uint8_t     h_alpha;
-            uint8_t     l_alpha;    
+            uint8_t     l_alpha;
             uint8_t     h_red;
             uint8_t     l_red;
             uint8_t     h_green;