cosmetics: Fix spelling mistakes

Signed-off-by: Diego Biurrun <diego@biurrun.de>

9 files changed, 12 insertions, 12 deletions

diff --git a/libavfilter/avfilter.h b/libavfilter/avfilter.h
index 65918fc474..a17b2a2f5c 100644
--- a/libavfilter/avfilter.h
+++ b/libavfilter/avfilter.h
@@ -441,7 +441,7 @@ void avfilter_uninit(void);
  * is not registered.
  *
  * @param filter the filter to register
- * @return 0 if the registration was succesfull, a negative value
+ * @return 0 if the registration was successful, a negative value
  * otherwise
  */
 int avfilter_register(AVFilter *filter);
diff --git a/libavfilter/interlace.h b/libavfilter/interlace.h
index 2d470508f4..fa571bd6eb 100644
--- a/libavfilter/interlace.h
+++ b/libavfilter/interlace.h
@@ -47,9 +47,9 @@ enum FieldType {
 typedef struct InterlaceContext {
     const AVClass *class;
     enum ScanMode scan;    // top or bottom field first scanning
-    int lowpass;           // enable or disable low pass filterning
+    int lowpass;           // enable or disable low pass filtering
     AVFrame *cur, *next;   // the two frames from which the new one is obtained
-    int got_output;        // signal an output frame is reday to request_frame()
+    int got_output;        // signal an output frame is ready to request_frame()
     void (*lowpass_line)(uint8_t *dstp, ptrdiff_t linesize, const uint8_t *srcp,
                          const uint8_t *srcp_above, const uint8_t *srcp_below);
 } InterlaceContext;
diff --git a/libavfilter/pthread.c b/libavfilter/pthread.c
index a60c1dcfba..2ebcc9753a 100644
--- a/libavfilter/pthread.c
+++ b/libavfilter/pthread.c
@@ -44,7 +44,7 @@ typedef struct ThreadContext {
     pthread_t *workers;
     avfilter_action_func *func;
 
-    /* per-execute perameters */
+    /* per-execute parameters */
     AVFilterContext *ctx;
     void *arg;
     int   *rets;
diff --git a/libavfilter/setpts.c b/libavfilter/setpts.c
index 6519790ba6..1c262b73e7 100644
--- a/libavfilter/setpts.c
+++ b/libavfilter/setpts.c
@@ -45,7 +45,7 @@ static const char *const var_names[] = {
     "INTERLACED",  ///< tell if the current frame is interlaced
     "N",           ///< frame / sample number (starting at zero)
     "PHI",         ///< golden ratio
-    "PI",          ///< greek pi
+    "PI",          ///< Greek pi
     "PREV_INPTS",  ///< previous  input PTS
     "PREV_OUTPTS", ///< previous output PTS
     "PTS",         ///< original pts in the file of the frame
diff --git a/libavfilter/vf_gradfun.c b/libavfilter/vf_gradfun.c
index ce79329b61..973cd7bd6a 100644
--- a/libavfilter/vf_gradfun.c
+++ b/libavfilter/vf_gradfun.c
@@ -26,9 +26,9 @@
  *
  * Apply a boxblur debanding algorithm (based on the gradfun2db
  * AviSynth filter by prunedtree).
- * Foreach pixel, if it's within threshold of the blurred value, make it closer.
- * So now we have a smoothed and higher bitdepth version of all the shallow
- * gradients, while leaving detailed areas untouched.
+ * For each pixel, if it is within the threshold of the blurred value, make it
+ * closer. So now we have a smoothed and higher bitdepth version of all the
+ * shallow gradients, while leaving detailed areas untouched.
  * Dither it back to 8bit.
  */
 
diff --git a/libavfilter/vf_hqdn3d.c b/libavfilter/vf_hqdn3d.c
index d8b1f3901e..4d8297df1f 100644
--- a/libavfilter/vf_hqdn3d.c
+++ b/libavfilter/vf_hqdn3d.c
@@ -127,7 +127,7 @@ static int denoise_depth(HQDN3DContext *s,
                          int w, int h, int sstride, int dstride,
                          int16_t *spatial, int16_t *temporal, int depth)
 {
-    // FIXME: For 16bit depth, frame_ant could be a pointer to the previous
+    // FIXME: For 16-bit depth, frame_ant could be a pointer to the previous
     // filtered frame rather than a separate buffer.
     long x, y;
     uint16_t *frame_ant = *frame_ant_ptr;
diff --git a/libavfilter/vf_overlay.c b/libavfilter/vf_overlay.c
index 11e0a6fbac..bb7bde6f73 100644
--- a/libavfilter/vf_overlay.c
+++ b/libavfilter/vf_overlay.c
@@ -75,7 +75,7 @@ static const char *eof_action_str[] = {
 
 typedef struct OverlayContext {
     const AVClass *class;
-    int x, y;                   ///< position of overlayed picture
+    int x, y;                   ///< position of overlaid picture
 
     int max_plane_step[4];      ///< steps per pixel for each plane
     int hsub, vsub;             ///< chroma subsampling values
diff --git a/libavfilter/vf_select.c b/libavfilter/vf_select.c
index 8d0e6c3be0..4139e78333 100644
--- a/libavfilter/vf_select.c
+++ b/libavfilter/vf_select.c
@@ -35,7 +35,7 @@
 static const char *const var_names[] = {
     "E",                 ///< Euler number
     "PHI",               ///< golden ratio
-    "PI",                ///< greek pi
+    "PI",                ///< Greek pi
 
     "TB",                ///< timebase
 
diff --git a/libavfilter/vf_yadif.c b/libavfilter/vf_yadif.c
index 75e20a8419..75f2d17758 100644
--- a/libavfilter/vf_yadif.c
+++ b/libavfilter/vf_yadif.c
@@ -398,7 +398,7 @@ static int poll_frame(AVFilterLink *link)
     if (val <= 0)
         return val;
 
-    //FIXME change API to not requre this red tape
+    //FIXME change API to not require this red tape
     if (val == 1 && !yadif->next) {
         if ((ret = ff_request_frame(link->src->inputs[0])) < 0)
             return ret;