lavfi: remove redundant checks after av_parse_video_rate()

Signed-off-by: Paul B Mahol <onemda@gmail.com>

libavfilter/vf_frei0r.c

@@ -400,8 +400,7 @@ static av_cold int source_init(AVFilterContext *ctx, const char *args, void *opa
         return AVERROR(EINVAL);
     }
 
-    if (av_parse_video_rate(&frame_rate_q, frame_rate) < 0 ||
-        frame_rate_q.den <= 0 || frame_rate_q.num <= 0) {
+    if (av_parse_video_rate(&frame_rate_q, frame_rate) < 0) {
         av_log(ctx, AV_LOG_ERROR, "Invalid frame rate: '%s'\n", frame_rate);
         return AVERROR(EINVAL);
     }

libavfilter/vsrc_color.c

@@ -90,8 +90,7 @@ static av_cold int color_init(AVFilterContext *ctx, const char *args, void *opaq
             av_log(ctx, AV_LOG_ERROR, "Error parsing options string: '%s'\n", args);
             goto end;
         }
-        if (av_parse_video_rate(&frame_rate_q, color->rate_str) < 0 ||
-                frame_rate_q.den <= 0 || frame_rate_q.num <= 0) {
+        if (av_parse_video_rate(&frame_rate_q, color->rate_str) < 0) {
             av_log(ctx, AV_LOG_ERROR, "Invalid frame rate: %s\n", color->rate_str);
             ret = AVERROR(EINVAL);
             goto end;
@@ -107,8 +106,7 @@ static av_cold int color_init(AVFilterContext *ctx, const char *args, void *opaq
             av_log(ctx, AV_LOG_ERROR, "Invalid frame size: %s\n", frame_size);
             return AVERROR(EINVAL);
         }
-        if (av_parse_video_rate(&frame_rate_q, frame_rate) < 0 ||
-                frame_rate_q.den <= 0 || frame_rate_q.num <= 0) {
+        if (av_parse_video_rate(&frame_rate_q, frame_rate) < 0) {
             av_log(ctx, AV_LOG_ERROR, "Invalid frame rate: %s\n", frame_rate);
             return AVERROR(EINVAL);
         }

libavfilter/vsrc_mandelbrot.c

@@ -131,8 +131,7 @@ static av_cold int init(AVFilterContext *ctx, const char *args, void *opaque)
     mb->start_scale /=mb->h;
     mb->end_scale /=mb->h;
 
-    if (av_parse_video_rate(&rate_q, mb->rate) < 0 ||
-        rate_q.den <= 0 || rate_q.num <= 0) {
+    if (av_parse_video_rate(&rate_q, mb->rate) < 0) {
         av_log(ctx, AV_LOG_ERROR, "Invalid frame rate: %s\n", mb->rate);
         return AVERROR(EINVAL);
     }

libavfilter/vsrc_mptestsrc.c

@@ -276,8 +276,7 @@ static av_cold int init(AVFilterContext *ctx, const char *args, void *opaque)
         return ret;
     }
 
-    if ((ret = av_parse_video_rate(&frame_rate_q, test->rate)) < 0 ||
-        frame_rate_q.den <= 0 || frame_rate_q.num <= 0) {
+    if ((ret = av_parse_video_rate(&frame_rate_q, test->rate)) < 0) {
         av_log(ctx, AV_LOG_ERROR, "Invalid frame rate: '%s'\n", test->rate);
         return ret;
     }

libavfilter/vsrc_testsrc.c

@@ -86,8 +86,7 @@ static av_cold int init(AVFilterContext *ctx, const char *args, void *opaque)
         return ret;
     }
 
-    if ((ret = av_parse_video_rate(&frame_rate_q, test->rate)) < 0 ||
-        frame_rate_q.den <= 0 || frame_rate_q.num <= 0) {
+    if ((ret = av_parse_video_rate(&frame_rate_q, test->rate)) < 0) {
         av_log(ctx, AV_LOG_ERROR, "Invalid frame rate: '%s'\n", test->rate);
         return ret;
     }