[FFmpeg-cvslog] avfilter/internal: add av_warn_unused_result

[Ganesh Ajjanagadde]

ffmpeg | branch: master | Ganesh Ajjanagadde <gajjanagadde at gmail.com> | Wed Oct 14 23:00:02 2015 -0400| [01790484c130ee6f390a31356906b7337949ef05] | committer: Ganesh Ajjanagadde

avfilter/internal: add av_warn_unused_result

av_warn_unused_result is added to functions whose return status should
be checked. Currently does not trigger any warnings, but should be
useful for future robustness.

Reviewed-by: Michael Niedermayer <michael at niedermayer.cc>
Signed-off-by: Ganesh Ajjanagadde <gajjanagadde at gmail.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=01790484c130ee6f390a31356906b7337949ef05
---

 libavfilter/internal.h |    5 +++++
 1 file changed, 5 insertions(+)

diff --git a/libavfilter/internal.h b/libavfilter/internal.h
index bb94707..d92e120 100644
--- a/libavfilter/internal.h
+++ b/libavfilter/internal.h
@@ -165,6 +165,7 @@ int ff_fmt_is_in(int fmt, const int *fmts);
  * @param log_ctx log context
  * @return >= 0 in case of success, a negative AVERROR code on error
  */
+av_warn_unused_result
 int ff_parse_pixel_format(enum AVPixelFormat *ret, const char *arg, void *log_ctx);
 
 /**
@@ -175,6 +176,7 @@ int ff_parse_pixel_format(enum AVPixelFormat *ret, const char *arg, void *log_ct
  * @param log_ctx log context
  * @return >= 0 in case of success, a negative AVERROR code on error
  */
+av_warn_unused_result
 int ff_parse_sample_rate(int *ret, const char *arg, void *log_ctx);
 
 /**
@@ -185,6 +187,7 @@ int ff_parse_sample_rate(int *ret, const char *arg, void *log_ctx);
  * @param log_ctx log context
  * @return >= 0 in case of success, a negative AVERROR code on error
  */
+av_warn_unused_result
 int ff_parse_time_base(AVRational *ret, const char *arg, void *log_ctx);
 
 /**
@@ -195,6 +198,7 @@ int ff_parse_time_base(AVRational *ret, const char *arg, void *log_ctx);
  * @param log_ctx log context
  * @return >= 0 in case of success, a negative AVERROR code on error
  */
+av_warn_unused_result
 int ff_parse_sample_format(int *ret, const char *arg, void *log_ctx);
 
 /**
@@ -207,6 +211,7 @@ int ff_parse_sample_format(int *ret, const char *arg, void *log_ctx);
  * @param log_ctx log context
  * @return >= 0 in case of success, a negative AVERROR code on error
  */
+av_warn_unused_result
 int ff_parse_channel_layout(int64_t *ret, int *nret, const char *arg,
                             void *log_ctx);