[FFmpeg-cvslog] avcodec/rv10: Replace switch by LUT

[Andreas Rheinhardt]

ffmpeg | branch: master | Andreas Rheinhardt <andreas.rheinhardt at outlook.com> | Tue Oct  3 02:32:10 2023 +0200| [951bcc3c0335cfdac130a359a93c1b3e3c2a0550] | committer: Andreas Rheinhardt

avcodec/rv10: Replace switch by LUT

Reviewed-by: Michael Niedermayer <michael at niedermayer.cc>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt at outlook.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=951bcc3c0335cfdac130a359a93c1b3e3c2a0550
---

 libavcodec/rv10.c | 21 +++++----------------
 1 file changed, 5 insertions(+), 16 deletions(-)

diff --git a/libavcodec/rv10.c b/libavcodec/rv10.c
index 3f9d5ff242..216328ffe7 100644
--- a/libavcodec/rv10.c
+++ b/libavcodec/rv10.c
@@ -158,25 +158,14 @@ static int rv10_decode_picture_header(MpegEncContext *s)
 
 static int rv20_decode_picture_header(RVDecContext *rv, int whole_size)
 {
+    static const enum AVPictureType pict_types[] =
+        { AV_PICTURE_TYPE_I, AV_PICTURE_TYPE_I /* hmm ... */,
+          AV_PICTURE_TYPE_P, AV_PICTURE_TYPE_B };
     MpegEncContext *s = &rv->m;
-    int seq, mb_pos, i, ret;
+    int seq, mb_pos, ret;
     int rpr_max;
 
-    i = get_bits(&s->gb, 2);
-    switch (i) {
-    case 0:
-        s->pict_type = AV_PICTURE_TYPE_I;
-        break;
-    case 1:
-        s->pict_type = AV_PICTURE_TYPE_I;
-        break;                                  // hmm ...
-    case 2:
-        s->pict_type = AV_PICTURE_TYPE_P;
-        break;
-    case 3:
-        s->pict_type = AV_PICTURE_TYPE_B;
-        break;
-    }
+    s->pict_type = pict_types[get_bits(&s->gb, 2)];
 
     if (s->low_delay && s->pict_type == AV_PICTURE_TYPE_B) {
         av_log(s->avctx, AV_LOG_ERROR, "low delay B\n");