[FFmpeg-devel] [PATCH] avcodec/h264: Declare the local variable decode_chroma as const.

[Wan-Teh Chang]

ff_h264_decode_mb_cabac() and ff_h264_decode_mb_cavlc() are very long
functions. Declaring decode_chroma as const makes it clear the variable
doesn't change after initialization.

Signed-off-by: Wan-Teh Chang <wtc at google.com>
---
 libavcodec/h264_cabac.c | 4 ++--
 libavcodec/h264_cavlc.c | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/libavcodec/h264_cabac.c b/libavcodec/h264_cabac.c
index 0973e30be9..345834645c 100644
--- a/libavcodec/h264_cabac.c
+++ b/libavcodec/h264_cabac.c
@@ -1916,8 +1916,8 @@ int ff_h264_decode_mb_cabac(const H264Context *h, H264SliceContext *sl)
     const SPS *sps = h->ps.sps;
     int mb_xy;
     int mb_type, partition_count, cbp = 0;
-    int dct8x8_allowed= h->ps.pps->transform_8x8_mode;
-    int decode_chroma = sps->chroma_format_idc == 1 || sps->chroma_format_idc == 2;
+    int dct8x8_allowed = h->ps.pps->transform_8x8_mode;
+    const int decode_chroma = sps->chroma_format_idc == 1 || sps->chroma_format_idc == 2;
     const int pixel_shift = h->pixel_shift;
 
     mb_xy = sl->mb_xy = sl->mb_x + sl->mb_y*h->mb_stride;
diff --git a/libavcodec/h264_cavlc.c b/libavcodec/h264_cavlc.c
index f01e76070c..187b1c64e2 100644
--- a/libavcodec/h264_cavlc.c
+++ b/libavcodec/h264_cavlc.c
@@ -704,8 +704,8 @@ int ff_h264_decode_mb_cavlc(const H264Context *h, H264SliceContext *sl)
     int mb_xy;
     int partition_count;
     unsigned int mb_type, cbp;
-    int dct8x8_allowed= h->ps.pps->transform_8x8_mode;
-    int decode_chroma = h->ps.sps->chroma_format_idc == 1 || h->ps.sps->chroma_format_idc == 2;
+    int dct8x8_allowed = h->ps.pps->transform_8x8_mode;
+    const int decode_chroma = h->ps.sps->chroma_format_idc == 1 || h->ps.sps->chroma_format_idc == 2;
     const int pixel_shift = h->pixel_shift;
 
     mb_xy = sl->mb_xy = sl->mb_x + sl->mb_y*h->mb_stride;
-- 
2.14.0.rc0.284.gd933b75aa4-goog