H264 DXVA2 implementation

 It allows VLD H264 decoding using DXVA2 (GPU assisted decoding API under
VISTA and Windows 7).
 It is implemented by using AVHWAccel API. It has been tested successfully
for some time in VLC using an nvidia card on Windows 7.

 To compile it, you need to have the system header dxva2api.h (either from
microsoft or using http://downloads.videolan.org/pub/videolan/testing/contrib/dxva2api.h)
 The generated libavcodec.dll does not depend directly on any new lib as
the necessary objects are given by the application using FFmpeg.

Originally committed as revision 21353 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 5 insertions, 0 deletions

diff --git a/configure b/configure
index 0f136054a8..7a8fc2497a 100755
--- a/configure
+++ b/configure
@@ -107,6 +107,7 @@ Configuration options:
   --disable-rdft           disable RDFT code
   --disable-vaapi          disable VAAPI code
   --disable-vdpau          disable VDPAU code
+  --disable-dxva2          disable DXVA2 code
   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
@@ -865,6 +866,7 @@ CONFIG_LIST="
     bzlib
     dct
     doc
+    dxva2
     fastdiv
     ffmpeg
     ffplay
@@ -1174,6 +1176,8 @@ h263_vaapi_hwaccel_select="vaapi h263_decoder"
 h263i_decoder_select="h263_decoder"
 h263p_encoder_select="h263_encoder"
 h264_decoder_select="golomb"
+h264_dxva2_hwaccel_deps="dxva2api_h"
+h264_dxva2_hwaccel_select="dxva2 h264_decoder"
 h264_vaapi_hwaccel_deps="va_va_h"
 h264_vaapi_hwaccel_select="vaapi"
 h264_vdpau_decoder_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
@@ -2399,6 +2403,7 @@ check_func_headers windows.h VirtualAlloc
 
 check_header conio.h
 check_header dlfcn.h
+check_header dxva2api.h
 check_header malloc.h
 check_header poll.h
 check_header sys/mman.h