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avcodec/h264: Declare the local variable decode_chroma as const.

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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@google.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Wan-Teh Chang
2017-07-20 10:31:19 -07:00
committed by Michael Niedermayer
parent b77e26b285
commit 99c5ac2039
2 changed files with 4 additions and 4 deletions
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4
libavcodec/h264_cabac.c
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@@ -1916,8 +1916,8 @@ int ff_h264_decode_mb_cabac(const H264Context *h, H264SliceContext *sl)
const SPS *sps = h->ps.sps; const SPS *sps = h->ps.sps;
int mb_xy; int mb_xy;
int mb_type, partition_count, cbp = 0; int mb_type, partition_count, cbp = 0;
int dct8x8_allowed= h->ps.pps->transform_8x8_mode; int dct8x8_allowed = h->ps.pps->transform_8x8_mode;
int decode_chroma = sps->chroma_format_idc == 1 || sps->chroma_format_idc == 2; const int decode_chroma = sps->chroma_format_idc == 1 || sps->chroma_format_idc == 2;
const int pixel_shift = h->pixel_shift; const int pixel_shift = h->pixel_shift;
mb_xy = sl->mb_xy = sl->mb_x + sl->mb_y*h->mb_stride; mb_xy = sl->mb_xy = sl->mb_x + sl->mb_y*h->mb_stride;

4
libavcodec/h264_cavlc.c
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@@ -704,8 +704,8 @@ int ff_h264_decode_mb_cavlc(const H264Context *h, H264SliceContext *sl)
int mb_xy; int mb_xy;
int partition_count; int partition_count;
unsigned int mb_type, cbp; unsigned int mb_type, cbp;
int dct8x8_allowed= h->ps.pps->transform_8x8_mode; 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; 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; const int pixel_shift = h->pixel_shift;
mb_xy = sl->mb_xy = sl->mb_x + sl->mb_y*h->mb_stride; mb_xy = sl->mb_xy = sl->mb_x + sl->mb_y*h->mb_stride;