[FFmpeg-devel] [PATCH 1/3] fft: add missing const.

[Reimar Döffinger]

This table was the largest object in FFmpeg's .data,
and really should be in .rodata.

Signed-off-by: Reimar Döffinger <Reimar.Doeffinger at gmx.de>
---
 libavcodec/fft_init_table.c | 2 +-
 libavcodec/fft_table.h      | 2 +-
 libavcodec/fft_template.c   | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/libavcodec/fft_init_table.c b/libavcodec/fft_init_table.c
index 7511dbe..4e8b082 100644
--- a/libavcodec/fft_init_table.c
+++ b/libavcodec/fft_init_table.c
@@ -53,7 +53,7 @@
  */
 #include "libavcodec/fft_table.h"
 
-int32_t w_tab_sr[MAX_FFT_SIZE/(4*16)] = {
+const int32_t w_tab_sr[MAX_FFT_SIZE/(4*16)] = {
     2147483647, 2147481121, 2147473542, 2147460908, 2147443222, 2147420483, 2147392690, 2147359845,
     2147321946, 2147278995, 2147230991, 2147177934, 2147119825, 2147056664, 2146988450, 2146915184,
     2146836866, 2146753497, 2146665076, 2146571603, 2146473080, 2146369505, 2146260881, 2146147205,
diff --git a/libavcodec/fft_table.h b/libavcodec/fft_table.h
index 7f3142d..4cd3a45 100644
--- a/libavcodec/fft_table.h
+++ b/libavcodec/fft_table.h
@@ -59,7 +59,7 @@
 #define MAX_LOG2_NFFT 16 //!< Specifies maximum allowed fft size
 #define MAX_FFT_SIZE (1 << MAX_LOG2_NFFT)
 
-extern int32_t w_tab_sr[];
+extern const int32_t w_tab_sr[];
 extern uint16_t fft_offsets_lut[];
 void ff_fft_lut_init(uint16_t *table, int off, int size, int *index);
 
diff --git a/libavcodec/fft_template.c b/libavcodec/fft_template.c
index b8d6417..697d1fc 100644
--- a/libavcodec/fft_template.c
+++ b/libavcodec/fft_template.c
@@ -229,7 +229,7 @@ static void fft_calc_c(FFTContext *s, FFTComplex *z) {
     FFTSample tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7, tmp8;
     FFTComplex *tmpz;
     FFTSample w_re, w_im;
-    FFTSample *w_re_ptr, *w_im_ptr;
+    const FFTSample *w_re_ptr, *w_im_ptr;
     const int fft_size = (1 << s->nbits);
     int64_t accu;
 
-- 
2.1.0