[FFmpeg-cvslog] mpegvideoenc: make a table const
Anton Khirnov
git at videolan.org
Fri May 19 12:18:16 EEST 2017
ffmpeg | branch: master | Anton Khirnov <anton at khirnov.net> | Sun May 22 21:20:31 2016 +0200| [b4a911c189962e563a09fb0efaf6fa9ab56263a4] | committer: Anton Khirnov
mpegvideoenc: make a table const
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=b4a911c189962e563a09fb0efaf6fa9ab56263a4
---
libavcodec/x86/mpegvideoenc.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/libavcodec/x86/mpegvideoenc.c b/libavcodec/x86/mpegvideoenc.c
index 47349d17ec..ead2ed1757 100644
--- a/libavcodec/x86/mpegvideoenc.c
+++ b/libavcodec/x86/mpegvideoenc.c
@@ -28,7 +28,12 @@
#include "libavcodec/mpegvideo.h"
/* not permutated inverse zigzag_direct + 1 for MMX quantizer */
-DECLARE_ALIGNED(16, static uint16_t, inv_zigzag_direct16)[64];
+DECLARE_ALIGNED(16, static const uint16_t, inv_zigzag_direct16)[64] = {
+ 1, 2, 6, 7, 15, 16, 28, 29, 3, 5, 8, 14, 17, 27, 30, 43, 4, 9, 13,
+ 18, 26, 31, 42, 44, 10, 12, 19, 25, 32, 41, 45, 54, 11, 20, 24, 33, 40, 46,
+ 53, 55, 21, 23, 34, 39, 47, 52, 56, 61, 22, 35, 38, 48, 51, 57, 60, 62, 36,
+ 37, 49, 50, 58, 59, 63, 64,
+};
#if HAVE_MMX_INLINE
#define COMPILE_TEMPLATE_MMXEXT 0
@@ -196,10 +201,6 @@ static void denoise_dct_sse2(MpegEncContext *s, int16_t *block){
av_cold void ff_mpv_encode_init_x86(MpegEncContext *s)
{
const int dct_algo = s->avctx->dct_algo;
- int i;
-
- for (i = 0; i < 64; i++)
- inv_zigzag_direct16[ff_zigzag_direct[i]] = i + 1;
if (dct_algo == FF_DCT_AUTO || dct_algo == FF_DCT_MMX) {
#if HAVE_MMX_INLINE
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