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lavfi/af_afir,af_aiir: Remove a variable that is always -1.

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Fixes two warnings:
libavfilter/af_afir.c:194:45: warning: assuming signed overflow does not occur when assuming that (X - c) > X is always false [-Wstrict-overflow]
     int dx = FFABS(x1-x0), sx = x0 < x1 ? 1 : -1;
                                 ~~~~~~~~~~~~^~~~
libavfilter/af_aiir.c:689:45: warning: assuming signed overflow does not occur when assuming that (X - c) > X is always false [-Wstrict-overflow]
     int dx = FFABS(x1-x0), sx = x0 < x1 ? 1 : -1;
                                 ~~~~~~~~~~~~^~~~
This commit is contained in:
Carl Eugen Hoyos 2018-07-19 02:28:25 +02:00
parent b23c4a9dbd
commit 9cb3d8fcb7
2 changed files with 4 additions and 4 deletions
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4
libavfilter/af_afir.c
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@ -191,7 +191,7 @@ static void drawtext(AVFrame *pic, int x, int y, const char *txt, uint32_t color
static void draw_line(AVFrame *out, int x0, int y0, int x1, int y1, uint32_t color) static void draw_line(AVFrame *out, int x0, int y0, int x1, int y1, uint32_t color)
{ {
int dx = FFABS(x1-x0), sx = x0 < x1 ? 1 : -1; int dx = FFABS(x1-x0);
int dy = FFABS(y1-y0), sy = y0 < y1 ? 1 : -1; int dy = FFABS(y1-y0), sy = y0 < y1 ? 1 : -1;
int err = (dx>dy ? dx : -dy) / 2, e2; int err = (dx>dy ? dx : -dy) / 2, e2;
@ -205,7 +205,7 @@ static void draw_line(AVFrame *out, int x0, int y0, int x1, int y1, uint32_t col
if (e2 >-dx) { if (e2 >-dx) {
err -= dy; err -= dy;
x0 += sx; x0--;
} }
if (e2 < dy) { if (e2 < dy) {

4
libavfilter/af_aiir.c
View File

@ -686,7 +686,7 @@ static void drawtext(AVFrame *pic, int x, int y, const char *txt, uint32_t color
static void draw_line(AVFrame *out, int x0, int y0, int x1, int y1, uint32_t color) static void draw_line(AVFrame *out, int x0, int y0, int x1, int y1, uint32_t color)
{ {
int dx = FFABS(x1-x0), sx = x0 < x1 ? 1 : -1; int dx = FFABS(x1-x0);
int dy = FFABS(y1-y0), sy = y0 < y1 ? 1 : -1; int dy = FFABS(y1-y0), sy = y0 < y1 ? 1 : -1;
int err = (dx>dy ? dx : -dy) / 2, e2; int err = (dx>dy ? dx : -dy) / 2, e2;
@ -700,7 +700,7 @@ static void draw_line(AVFrame *out, int x0, int y0, int x1, int y1, uint32_t col
if (e2 >-dx) { if (e2 >-dx) {
err -= dy; err -= dy;
x0 += sx; x0--;
} }
if (e2 < dy) { if (e2 < dy) {