stagefright: misc fixes to software video encoders (and decoders)

- move logic to set encoder parameters to common encoder class
  (similarly to what was done for decoders)
- set compressed buffer size based on frame size and compression ratio,
  and codec-specific minimum size
- set raw buffer size based on frame size and metadata mode
- do not set stride and slice height on compressed ports
- advertise only QCIF support for google H263 encoder
- set large-enough input size for video decoders to support adaptive
  playback
- do not change input buffer size on output port reconfiguration, as
  no input buffer reallocation takes place
- do not return empty buffers with EOS after EOS has been signaled

Bug: 18513091
Bug: 18639027
Change-Id: Ib13492ef66adf331aa4572c67d2b283ea020cb41

1 files changed, 6 insertions, 0 deletions

diff --git a/include/media/stagefright/foundation/AUtils.h b/include/media/stagefright/foundation/AUtils.h
index 3a73a39..d7ecf50 100644
--- a/include/media/stagefright/foundation/AUtils.h
+++ b/include/media/stagefright/foundation/AUtils.h
@@ -40,6 +40,12 @@ inline static const T divUp(const T &nom, const T &den) {
     }
 }
 
+/* == ceil(nom / den) * den. T must be integer type, alignment must be positive power of 2 */
+template<class T, class U>
+inline static const T align(const T &nom, const U &den) {
+    return (nom + (T)(den - 1)) & (T)~(den - 1);
+}
+
 template<class T>
 inline static T abs(const T &a) {
     return a < 0 ? -a : a;