add a new vp6a codec (add alpha plan support to vp6)

Originally committed as revision 10574 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 15 insertions, 1 deletions

diff --git a/libavcodec/vp6.c b/libavcodec/vp6.c
index 5c4b935ae5..ffd95f0cad 100644
--- a/libavcodec/vp6.c
+++ b/libavcodec/vp6.c
@@ -494,7 +494,8 @@ static int vp6_decode_init(AVCodecContext *avctx)
 {
     vp56_context_t *s = avctx->priv_data;
 
-    vp56_init(avctx, avctx->codec->id == CODEC_ID_VP6);
+    vp56_init(avctx, avctx->codec->id == CODEC_ID_VP6,
+                     avctx->codec->id == CODEC_ID_VP6A);
     s->vp56_coord_div = vp6_coord_div;
     s->parse_vector_adjustment = vp6_parse_vector_adjustment;
     s->adjust = vp6_adjust;
@@ -532,3 +533,16 @@ AVCodec vp6f_decoder = {
     vp56_decode_frame,
     CODEC_CAP_DR1,
 };
+
+/* flash version, not flipped upside-down, with alpha channel */
+AVCodec vp6a_decoder = {
+    "vp6a",
+    CODEC_TYPE_VIDEO,
+    CODEC_ID_VP6A,
+    sizeof(vp56_context_t),
+    vp6_decode_init,
+    NULL,
+    vp56_free,
+    vp56_decode_frame,
+    CODEC_CAP_DR1,
+};