[FFmpeg-devel] [PATCH] avcodec/ac3enc: use long long after switch to 64 bit bitrate

[Ganesh Ajjanagadde]

Commit 7404f3bdb switched bitrate to 64 bits.
This triggers -Wabsolute-value on clang, e.g
http://fate.ffmpeg.org/log.cgi?time=20150917122742&log=compile&slot=x86_64-darwin-clang-3.7-O3.
Therefore, usage of abs is changed to llabs, which is available on all of the platforms.
Have not tested whether LLONG_MAX (C99 feature) is available on Microsoft or not.

Signed-off-by: Ganesh Ajjanagadde <gajjanagadde at gmail.com>
---
 libavcodec/ac3enc.c | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/libavcodec/ac3enc.c b/libavcodec/ac3enc.c
index 0d8a678..55536d5 100644
--- a/libavcodec/ac3enc.c
+++ b/libavcodec/ac3enc.c
@@ -2153,8 +2153,9 @@ static av_cold int validate_options(AC3EncodeContext *s)
 
     /* validate bit rate */
     if (s->eac3) {
-        int max_br, min_br, wpf, min_br_dist, min_br_code;
+        int max_br, min_br, wpf, min_br_code;
         int num_blks_code, num_blocks, frame_samples;
+        long long min_br_dist;
 
         /* calculate min/max bitrate */
         /* TODO: More testing with 3 and 2 blocks. All E-AC-3 samples I've
@@ -2184,9 +2185,9 @@ static av_cold int validate_options(AC3EncodeContext *s)
            this is needed for lookup tables for bandwidth and coupling
            parameter selection */
         min_br_code = -1;
-        min_br_dist = INT_MAX;
+        min_br_dist = LLONG_MAX;
         for (i = 0; i < 19; i++) {
-            int br_dist = abs(ff_ac3_bitrate_tab[i] * 1000 - avctx->bit_rate);
+            long long br_dist = llabs(ff_ac3_bitrate_tab[i] * 1000 - avctx->bit_rate);
             if (br_dist < min_br_dist) {
                 min_br_dist = br_dist;
                 min_br_code = i;
@@ -2199,10 +2200,11 @@ static av_cold int validate_options(AC3EncodeContext *s)
             wpf--;
         s->frame_size_min = 2 * wpf;
     } else {
-        int best_br = 0, best_code = 0, best_diff = INT_MAX;
+        int best_br = 0, best_code = 0;
+        long long best_diff = LLONG_MAX;
         for (i = 0; i < 19; i++) {
             int br   = (ff_ac3_bitrate_tab[i] >> s->bit_alloc.sr_shift) * 1000;
-            int diff = abs(br - avctx->bit_rate);
+            long long diff = llabs(br - avctx->bit_rate);
             if (diff < best_diff) {
                 best_br   = br;
                 best_code = i;
-- 
2.5.2