From 1f948745c3cbe45c4ccd5d8996fc885d826bf3ff Mon Sep 17 00:00:00 2001
From: Luca Barbato <lu_zero@gentoo.org>
Date: Sat, 26 Nov 2011 13:28:48 +0100
Subject: vc1: use an enum for Frame Coding Mode

Document it a little and possibly fix a bug in dxva2_vc1.
---
 libavcodec/vc1.c | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

(limited to 'libavcodec/vc1.c')

diff --git a/libavcodec/vc1.c b/libavcodec/vc1.c
index cb228e6107..d728f9beb4 100644
--- a/libavcodec/vc1.c
+++ b/libavcodec/vc1.c
@@ -836,14 +836,14 @@ int vc1_parse_frame_header_adv(VC1Context *v, GetBitContext* gb)
     if (v->interlace) {
         v->fcm = decode012(gb);
         if (v->fcm) {
-            if (v->fcm == 2)
+            if (v->fcm == ILACE_FIELD)
                 v->field_mode = 1;
             if (!v->warn_interlaced++)
                 av_log(v->s.avctx, AV_LOG_ERROR,
                        "Interlaced frames/fields support is incomplete\n");
         }
     } else {
-        v->fcm = 0;
+        v->fcm = PROGRESSIVE;
     }
 
     if (v->field_mode) {
@@ -957,7 +957,7 @@ int vc1_parse_frame_header_adv(VC1Context *v, GetBitContext* gb)
     switch (v->s.pict_type) {
     case AV_PICTURE_TYPE_I:
     case AV_PICTURE_TYPE_BI:
-        if (v->fcm == 1) { //interlace frame picture
+        if (v->fcm == ILACE_FRAME) { //interlace frame picture
             status = bitplane_decoding(v->fieldtx_plane, &v->fieldtx_is_raw, v);
             if (status < 0)
                 return -1;
@@ -998,7 +998,7 @@ int vc1_parse_frame_header_adv(VC1Context *v, GetBitContext* gb)
                 v->dmvrange = get_unary(gb, 0, 3);
             else
                 v->dmvrange = 0;
-            if (v->fcm == 1) { // interlaced frame picture
+            if (v->fcm == ILACE_FRAME) { // interlaced frame picture
                 v->fourmvswitch = get_bits1(gb);
                 v->intcomp      = get_bits1(gb);
                 if (v->intcomp) {
@@ -1038,7 +1038,7 @@ int vc1_parse_frame_header_adv(VC1Context *v, GetBitContext* gb)
             v->tt_index = 1;
         else
             v->tt_index = 2;
-        if (v->fcm != 1) {
+        if (v->fcm != ILACE_FRAME) {
             int mvmode;
             mvmode     = get_unary(gb, 1, 4);
             lowquant   = (v->pq > 12) ? 0 : 1;
@@ -1073,7 +1073,7 @@ int vc1_parse_frame_header_adv(VC1Context *v, GetBitContext* gb)
                            || (v->mv_mode == MV_PMODE_INTENSITY_COMP
                                && v->mv_mode2 == MV_PMODE_1MV_HPEL_BILIN));
         }
-        if (v->fcm == 0) { // progressive
+        if (v->fcm == PROGRESSIVE) { // progressive
             if ((v->mv_mode == MV_PMODE_INTENSITY_COMP &&
                  v->mv_mode2 == MV_PMODE_MIXED_MV)
                 || v->mv_mode == MV_PMODE_MIXED_MV) {
@@ -1095,7 +1095,7 @@ int vc1_parse_frame_header_adv(VC1Context *v, GetBitContext* gb)
             /* Hopefully this is correct for P frames */
             v->s.mv_table_index = get_bits(gb, 2); //but using ff_vc1_ tables
             v->cbpcy_vlc        = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
-        } else if (v->fcm == 1) { // frame interlaced
+        } else if (v->fcm == ILACE_FRAME) { // frame interlaced
             v->qs_last          = v->s.quarter_sample;
             v->s.quarter_sample = 1;
             v->s.mspel          = 1;
@@ -1135,7 +1135,7 @@ int vc1_parse_frame_header_adv(VC1Context *v, GetBitContext* gb)
         break;
     case AV_PICTURE_TYPE_B:
         // TODO: implement interlaced frame B picture decoding
-        if (v->fcm == 1)
+        if (v->fcm == ILACE_FRAME)
             return -1;
         if (v->extended_mv)
             v->mvrange = get_unary(gb, 0, 3);
-- 
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