Added DXVA2 support to our avcodec wrapper.

It is not yet activated (the build system part is missing).

modules/codec/avcodec/Modules.am

@@ -9,6 +9,7 @@ libavcodec_plugin_la_SOURCES = \
 	fourcc.c \
 	chroma.c \
 	vaapi.c \
+	dxva2.c \
 	va.h \
 	$(NULL)
 if ENABLE_SOUT

modules/codec/avcodec/avcodec.c

@@ -136,7 +136,7 @@ vlc_module_begin ()
 
     add_integer( "ffmpeg-debug", 0, NULL, DEBUG_TEXT, DEBUG_LONGTEXT,
                  true )
-#ifdef HAVE_AVCODEC_VAAPI
+#if defined(HAVE_AVCODEC_VAAPI) || defined(HAVE_AVCODEC_DXVA2)
     add_bool( "ffmpeg-hw", true, NULL, HW_TEXT, HW_LONGTEXT, true )
 #endif
 

modules/codec/avcodec/avcodec.h

@@ -265,6 +265,7 @@ void EndSubtitleDec( decoder_t *p_dec );
 #   define AV_VERSION_INT(a, b, c) ((a)<<16 | (b)<<8 | (c))
 #endif
 
-/* Uncomment it to enable compilation with vaapi (you also must change the build
+/* Uncomment it to enable compilation with vaapi/dxva2 (you also must change the build
  * system) */
 //#define HAVE_AVCODEC_VAAPI 1
+//#define HAVE_AVCODEC_DXVA2 1

modules/codec/avcodec/va.h

@@ -59,6 +59,7 @@ static inline void vlc_va_Delete(vlc_va_t *va)
 }
 
 vlc_va_t *vlc_va_NewVaapi(int codec_id);
+vlc_va_t *vlc_va_NewDxva2(vlc_object_t *log, int codec_id);
 
 #endif
 

modules/codec/avcodec/video.c

@@ -41,6 +41,9 @@
 #   ifdef HAVE_AVCODEC_VAAPI
 #       include <libavcodec/vaapi.h>
 #   endif
+#   ifdef HAVE_AVCODEC_DXVA2
+#       include <libavcodec/dxva2.h>
+#   endif
 #elif defined(HAVE_FFMPEG_AVCODEC_H)
 #   include <ffmpeg/avcodec.h>
 #else
@@ -49,6 +52,9 @@
 
 #include "avcodec.h"
 #include "va.h"
+#if defined(HAVE_AVCODEC_VAAPI) || defined(HAVE_AVCODEC_DXVA2)
+#   define HAVE_AVCODEC_VA
+#endif
 
 /*****************************************************************************
  * decoder_sys_t : decoder descriptor
@@ -105,7 +111,7 @@ static int  ffmpeg_ReGetFrameBuf( struct AVCodecContext *, AVFrame * );
 static void ffmpeg_ReleaseFrameBuf( struct AVCodecContext *, AVFrame * );
 static void ffmpeg_NextPts( decoder_t * );
 
-#ifdef HAVE_AVCODEC_VAAPI
+#ifdef HAVE_AVCODEC_VA
 static enum PixelFormat ffmpeg_GetFormat( AVCodecContext *,
                                           const enum PixelFormat * );
 #endif
@@ -320,7 +326,7 @@ int InitVideoDec( decoder_t *p_dec, AVCodecContext *p_context,
     p_sys->p_context->release_buffer = ffmpeg_ReleaseFrameBuf;
     p_sys->p_context->opaque = p_dec;
 
-#ifdef HAVE_AVCODEC_VAAPI
+#ifdef HAVE_AVCODEC_VA
     if( var_CreateGetBool( p_dec, "ffmpeg-hw" ) )
         p_sys->p_context->get_format = ffmpeg_GetFormat;
 #endif
@@ -897,13 +903,13 @@ static int ffmpeg_GetFrameBuf( struct AVCodecContext *p_context,
 
     if( p_sys->p_va )
     {
-#ifdef HAVE_AVCODEC_VAAPI
+#ifdef HAVE_AVCODEC_VA
         /* hwaccel_context is not present in old fffmpeg version */
         if( vlc_va_Setup( p_sys->p_va,
                           &p_sys->p_context->hwaccel_context, &p_dec->fmt_out.video.i_chroma,
                           p_sys->p_context->width, p_sys->p_context->height ) )
         {
-            msg_Err( p_dec, "VaSetup failed" );
+            msg_Err( p_dec, "vlc_va_Setup failed" );
             return -1;
         }
 #else
@@ -1086,7 +1092,7 @@ static void ffmpeg_NextPts( decoder_t *p_dec )
     }
 }
 
-#ifdef HAVE_AVCODEC_VAAPI
+#ifdef HAVE_AVCODEC_VA
 static enum PixelFormat ffmpeg_GetFormat( AVCodecContext *p_codec,
                                           const enum PixelFormat *pi_fmt )
 {
@@ -1115,21 +1121,42 @@ static enum PixelFormat ffmpeg_GetFormat( AVCodecContext *p_codec,
         /* Only VLD supported */
         if( pi_fmt[i] == PIX_FMT_VAAPI_VLD )
         {
+#ifdef HAVE_AVCODEC_VAAPI
             msg_Dbg( p_dec, "Trying VA API" );
             p_sys->p_va = vlc_va_NewVaapi( p_sys->i_codec_id );
+            if( !p_sys->p_va )
+                msg_Warn( p_dec, "Failed to open VA API" );
+#else
+            continue;
+#endif
+        }
+        if( pi_fmt[i] == PIX_FMT_DXVA2_VLD )
+        {
+#ifdef HAVE_AVCODEC_DXVA2
+            msg_Dbg( p_dec, "Trying DXVA2" );
+            p_sys->p_va = vlc_va_NewDxva2( VLC_OBJECT(p_dec), p_sys->i_codec_id );
+            if( !p_sys->p_va )
+                msg_Warn( p_dec, "Failed to open DXVA2" );
+#else
+            continue;
+#endif
+        }
+        else
+        {
+            continue;
+        }
+
         if( p_sys->p_va )
         {
             /* FIXME this will disabled direct rendering
              * even if a new pixel format is renegociated
              *
-                 * FIXME Try to call VaSetup when possible
+             * FIXME Try to call vlc_va_Setup when possible
              * to detect errors when possible (later is too late) */
             p_sys->b_direct_rendering = false;
             p_sys->p_context->draw_horiz_band = NULL;
             return pi_fmt[i];
         }
-            msg_Warn( p_dec, "Failed to open VA API" );
-        }
     }
 
     /* Fallback to default behaviour */