[FFmpeg-cvslog] avcodec/vp56: Add vpX_rac_is_end() to check for the end of input

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michael at niedermayer.cc> | Sat Aug 11 22:28:31 2018 +0200| [0fb83b4c91d5a0784ca81df4283f25740c263f20] | committer: Michael Niedermayer

avcodec/vp56: Add vpX_rac_is_end() to check for the end of input

Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=0fb83b4c91d5a0784ca81df4283f25740c263f20
---

 libavcodec/vp56.h | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/libavcodec/vp56.h b/libavcodec/vp56.h
index b8dda9e73a..70e1d38a83 100644
--- a/libavcodec/vp56.h
+++ b/libavcodec/vp56.h
@@ -227,6 +227,14 @@ int ff_vp56_decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
 extern const uint8_t ff_vp56_norm_shift[256];
 int ff_vp56_init_range_decoder(VP56RangeCoder *c, const uint8_t *buf, int buf_size);
 
+/**
+ * vp5689 returns 1 if the end of the stream has been reached, 0 otherwise.
+ */
+static av_always_inline int vpX_rac_is_end(VP56RangeCoder *c)
+{
+    return c->end <= c->buffer && c->bits >= 0;
+}
+
 static av_always_inline unsigned int vp56_rac_renorm(VP56RangeCoder *c)
 {
     int shift = ff_vp56_norm_shift[c->high];