Fix a bunch of common typos.

18 files changed, 28 insertions, 28 deletions

diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index 669afe80ba..ae5ce6e314 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -1274,7 +1274,7 @@ typedef struct AVCodecContext {
      * Some codecs need additional format info. It is stored here.
      * If any muxer uses this then ALL demuxers/parsers AND encoders for the
      * specific codec MUST set it correctly otherwise stream copy breaks.
-     * In general use of this field by muxers is not recommanded.
+     * In general use of this field by muxers is not recommended.
      * - encoding: Set by libavcodec.
      * - decoding: Set by libavcodec. (FIXME: Is this OK?)
      */
@@ -3444,7 +3444,7 @@ typedef struct ReSampleContext ReSampleContext;
  * @param linear           if 1 then the used FIR filter will be linearly interpolated
                            between the 2 closest, if 0 the closest will be used
  * @param cutoff           cutoff frequency, 1.0 corresponds to half the output sampling rate
- * @return allocated ReSampleContext, NULL if error occured
+ * @return allocated ReSampleContext, NULL if error occurred
  */
 ReSampleContext *av_audio_resample_init(int output_channels, int input_channels,
                                         int output_rate, int input_rate,
diff --git a/libavcodec/bitstream.c b/libavcodec/bitstream.c
index 68ea3e0bda..14e392f34d 100644
--- a/libavcodec/bitstream.c
+++ b/libavcodec/bitstream.c
@@ -103,7 +103,7 @@ static int alloc_table(VLC *vlc, int size, int use_static)
     vlc->table_size += size;
     if (vlc->table_size > vlc->table_allocated) {
         if(use_static)
-            abort(); //cant do anything, init_vlc() is used with too little memory
+            abort(); // cannot do anything, init_vlc() is used with too little memory
         vlc->table_allocated += (1 << vlc->bits);
         vlc->table = av_realloc(vlc->table,
                                 sizeof(VLC_TYPE) * 2 * vlc->table_allocated);
diff --git a/libavcodec/dsputil.h b/libavcodec/dsputil.h
index 98b7b1eeaa..300160986c 100644
--- a/libavcodec/dsputil.h
+++ b/libavcodec/dsputil.h
@@ -498,8 +498,8 @@ typedef struct DSPContext {
      * with the zigzag/alternate scan<br>
      * an example to avoid confusion:
      * - (->decode coeffs -> zigzag reorder -> dequant -> reference idct ->...)
-     * - (x -> referece dct -> reference idct -> x)
-     * - (x -> referece dct -> simple_mmx_perm = idct_permutation -> simple_idct_mmx -> x)
+     * - (x -> reference dct -> reference idct -> x)
+     * - (x -> reference dct -> simple_mmx_perm = idct_permutation -> simple_idct_mmx -> x)
      * - (->decode coeffs -> zigzag reorder -> simple_mmx_perm -> dequant -> simple_idct_mmx ->...)
      */
     uint8_t idct_permutation[64];
diff --git a/libavcodec/eatgv.c b/libavcodec/eatgv.c
index 917308f571..597d0db8da 100644
--- a/libavcodec/eatgv.c
+++ b/libavcodec/eatgv.c
@@ -155,7 +155,7 @@ static int tgv_decode_inter(TgvContext * s, const uint8_t *buf, const uint8_t *b
     vector_bits       = AV_RL16(&buf[6]);
     buf += 12;
 
-    /* allocate codebook buffers as neccessary */
+    /* allocate codebook buffers as necessary */
     if (num_mvs > s->num_mvs) {
         s->mv_codebook = av_realloc(s->mv_codebook, num_mvs*2*sizeof(int));
         s->num_mvs = num_mvs;
@@ -286,7 +286,7 @@ static int tgv_decode_frame(AVCodecContext *avctx,
         s->frame.buffer_hints = FF_BUFFER_HINTS_VALID;
         s->frame.linesize[0] = s->width;
 
-        /* allocate additional 12 bytes to accomodate av_memcpy_backptr() OUTBUF_PADDED optimisation */
+        /* allocate additional 12 bytes to accommodate av_memcpy_backptr() OUTBUF_PADDED optimisation */
         s->frame.data[0] = av_malloc(s->width*s->height + 12);
         if (!s->frame.data[0])
             return AVERROR(ENOMEM);
diff --git a/libavcodec/error_resilience.c b/libavcodec/error_resilience.c
index 23ac904c6c..a2e911b951 100644
--- a/libavcodec/error_resilience.c
+++ b/libavcodec/error_resilience.c
@@ -790,7 +790,7 @@ void ff_er_frame_end(MpegEncContext *s){
     if(!s->error_recognition || s->error_count==0 || s->avctx->lowres ||
        s->avctx->hwaccel ||
        s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU ||
-       s->picture_structure != PICT_FRAME || // we dont support ER of field pictures yet, though it should not crash if enabled
+       s->picture_structure != PICT_FRAME || // we do not support ER of field pictures yet, though it should not crash if enabled
        s->error_count==3*s->mb_width*(s->avctx->skip_top + s->avctx->skip_bottom)) return;
 
     if (s->current_picture.f.motion_val[0] == NULL) {
diff --git a/libavcodec/g722enc.c b/libavcodec/g722enc.c
index f8db49aba8..1eed784a72 100644
--- a/libavcodec/g722enc.c
+++ b/libavcodec/g722enc.c
@@ -153,7 +153,7 @@ static int g722_encode_trellis(AVCodecContext *avctx,
 
         for (j = 0; j < frontier && nodes[0][j]; j++) {
             /* Only k >> 2 affects the future adaptive state, therefore testing
-             * small steps that don't change k >> 2 is useless, the orignal
+             * small steps that don't change k >> 2 is useless, the original
              * value from encode_low is better than them. Since we step k
              * in steps of 4, make sure range is a multiple of 4, so that
              * we don't miss the original value from encode_low. */
diff --git a/libavcodec/h264.c b/libavcodec/h264.c
index acd7179cc0..285aae81e5 100644
--- a/libavcodec/h264.c
+++ b/libavcodec/h264.c
@@ -2893,7 +2893,7 @@ static int decode_slice_header(H264Context *h, H264Context *h0){
              * FIXME: avoiding a memcpy would be nice, but ref handling makes many assumptions
              * about there being no actual duplicates.
              * FIXME: this doesn't copy padding for out-of-frame motion vectors.  Given we're
-             * concealing a lost frame, this probably isn't noticable by comparison, but it should
+             * concealing a lost frame, this probably isn't noticeable by comparison, but it should
              * be fixed. */
             if (h->short_ref_count) {
                 if (prev) {
@@ -3316,7 +3316,7 @@ static av_always_inline void fill_filter_caches_inter(H264Context *h, MpegEncCon
 
 /**
  *
- * @return non zero if the loop filter can be skiped
+ * @return non zero if the loop filter can be skipped
  */
 static int fill_filter_caches(H264Context *h, int mb_type){
     MpegEncContext * const s = &h->s;
@@ -3839,7 +3839,7 @@ static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size){
                 av_log(h->s.avctx, AV_LOG_ERROR, "Invalid mix of idr and non-idr slices");
                 return -1;
             }
-            idr(h); //FIXME ensure we don't loose some frames if there is reordering
+            idr(h); // FIXME ensure we don't lose some frames if there is reordering
         case NAL_SLICE:
             init_get_bits(&hx->s.gb, ptr, bit_length);
             hx->intra_gb_ptr=
diff --git a/libavcodec/jfdctint_template.c b/libavcodec/jfdctint_template.c
index 02b6f09381..5175390710 100644
--- a/libavcodec/jfdctint_template.c
+++ b/libavcodec/jfdctint_template.c
@@ -340,7 +340,7 @@ FUNC(ff_jpeg_fdct_islow)(DCTELEM *data)
 
 /*
  * The secret of DCT2-4-8 is really simple -- you do the usual 1-DCT
- * on the rows and then, instead of doing even and odd, part on the colums
+ * on the rows and then, instead of doing even and odd, part on the columns
  * you do even part two times.
  */
 GLOBAL(void)
diff --git a/libavcodec/lpc.h b/libavcodec/lpc.h
index 8cc2362e5b..2a944b6f48 100644
--- a/libavcodec/lpc.h
+++ b/libavcodec/lpc.h
@@ -67,7 +67,7 @@ typedef struct LPCContext {
      * Perform autocorrelation on input samples with delay of 0 to lag.
      * @param data  input samples.
      *              constraints: no alignment needed, but must have have at
-     *              least lag*sizeof(double) valid bytes preceeding it, and
+     *              least lag*sizeof(double) valid bytes preceding it, and
      *              size must be at least (len+1)*sizeof(double) if data is
      *              16-byte aligned or (len+2)*sizeof(double) if data is
      *              unaligned.
diff --git a/libavcodec/mjpegdec.c b/libavcodec/mjpegdec.c
index 0a1236c225..17e87ed65b 100644
--- a/libavcodec/mjpegdec.c
+++ b/libavcodec/mjpegdec.c
@@ -1109,9 +1109,9 @@ static int mjpeg_decode_app(MJpegDecodeContext *s)
         av_log(s->avctx, AV_LOG_DEBUG, "APPx %8X\n", id);
     }
 
-    /* buggy AVID, it puts EOI only at every 10th frame */
-    /* also this fourcc is used by non-avid files too, it holds some
-       informations, but it's always present in AVID creates files */
+    /* Buggy AVID, it puts EOI only at every 10th frame. */
+    /* Also, this fourcc is used by non-avid files too, it holds some
+       information, but it's always present in AVID-created files. */
     if (id == AV_RL32("AVI1"))
     {
         /* structure:
diff --git a/libavcodec/mpegvideo.h b/libavcodec/mpegvideo.h
index 46ad5d8306..01df491907 100644
--- a/libavcodec/mpegvideo.h
+++ b/libavcodec/mpegvideo.h
@@ -127,7 +127,7 @@ typedef struct Picture{
     int ref_poc[2][2][16];      ///< h264 POCs of the frames used as reference (FIXME need per slice)
     int ref_count[2][2];        ///< number of entries in ref_poc              (FIXME need per slice)
     int mbaff;                  ///< h264 1 -> MBAFF frame 0-> not MBAFF
-    int field_picture;          ///< whether or not the picture was encoded in seperate fields
+    int field_picture;          ///< whether or not the picture was encoded in separate fields
 
     int mb_var_sum;             ///< sum of MB variance for current frame
     int mc_mb_var_sum;          ///< motion compensated MB variance for current frame
diff --git a/libavcodec/proresdec.c b/libavcodec/proresdec.c
index b4c794564b..46434df263 100644
--- a/libavcodec/proresdec.c
+++ b/libavcodec/proresdec.c
@@ -559,7 +559,7 @@ static int decode_slice(AVCodecContext *avctx, ProresThreadData *td)
     sf = sf > 128 ? (sf - 96) << 2 : sf;
 
     /* scale quantization matrixes according with slice's scale factor */
-    /* TODO: this can be SIMD-optimized alot */
+    /* TODO: this can be SIMD-optimized a lot */
     if (ctx->qmat_changed || sf != ctx->prev_slice_sf) {
         ctx->prev_slice_sf = sf;
         for (i = 0; i < 64; i++) {
diff --git a/libavcodec/tscc.c b/libavcodec/tscc.c
index df4b09b07c..90d203dd77 100644
--- a/libavcodec/tscc.c
+++ b/libavcodec/tscc.c
@@ -155,7 +155,7 @@ static av_cold int decode_init(AVCodecContext *avctx)
              return -1;
     }
     c->bpp = avctx->bits_per_coded_sample;
-    // buffer size for RLE 'best' case when 2-byte code preceeds each pixel and there may be padding after it too
+    // buffer size for RLE 'best' case when 2-byte code precedes each pixel and there may be padding after it too
     c->decomp_size = (((avctx->width * c->bpp + 7) >> 3) + 3 * avctx->width + 2) * avctx->height + 2;
 
     /* Allocate decompression buffer */
diff --git a/libavcodec/vaapi_mpeg4.c b/libavcodec/vaapi_mpeg4.c
index 915632844e..41d54c6116 100644
--- a/libavcodec/vaapi_mpeg4.c
+++ b/libavcodec/vaapi_mpeg4.c
@@ -98,7 +98,7 @@ static int vaapi_mpeg4_start_frame(AVCodecContext *avctx, av_unused const uint8_
         pic_param->forward_reference_picture  = ff_vaapi_get_surface_id(&s->last_picture);
 
     /* Fill in VAIQMatrixBufferMPEG4 */
-    /* Only the first inverse quantisation method uses the weighthing matrices */
+    /* Only the first inverse quantisation method uses the weighting matrices */
     if (pic_param->vol_fields.bits.quant_type) {
         iq_matrix = ff_vaapi_alloc_iq_matrix(vactx, sizeof(VAIQMatrixBufferMPEG4));
         if (!iq_matrix)
diff --git a/libavcodec/vc1dec.c b/libavcodec/vc1dec.c
index 7c9e906505..0340dc202d 100644
--- a/libavcodec/vc1dec.c
+++ b/libavcodec/vc1dec.c
@@ -3536,7 +3536,7 @@ static void vc1_apply_p_loop_filter(VC1Context *v)
         vc1_apply_p_v_loop_filter(v, i);
     }
 
-    /* V always preceedes H, therefore we run H one MB before V;
+    /* V always precedes H, therefore we run H one MB before V;
      * at the end of a row, we catch up to complete the row */
     if (s->mb_x) {
         for (i = 0; i < 6; i++) {
@@ -3573,7 +3573,7 @@ static int vc1_decode_p_mb(VC1Context *v)
     int skipped, fourmv;
     int block_cbp = 0, pat, block_tt = 0, block_intra = 0;
 
-    mquant = v->pq; /* Loosy initialization */
+    mquant = v->pq; /* lossy initialization */
 
     if (v->mv_type_is_raw)
         fourmv = get_bits1(gb);
@@ -4141,7 +4141,7 @@ static void vc1_decode_b_mb(VC1Context *v)
     int dmv_x[2], dmv_y[2];
     int bmvtype = BMV_TYPE_BACKWARD;
 
-    mquant      = v->pq; /* Loosy initialization */
+    mquant      = v->pq; /* lossy initialization */
     s->mb_intra = 0;
 
     if (v->dmb_is_raw)
diff --git a/libavcodec/wmaprodec.c b/libavcodec/wmaprodec.c
index c46a983602..b947eb800f 100644
--- a/libavcodec/wmaprodec.c
+++ b/libavcodec/wmaprodec.c
@@ -1425,7 +1425,7 @@ static int remaining_bits(WMAProDecodeCtx *s, GetBitContext *gb)
  *@param s codec context
  *@param gb bitstream reader context
  *@param len length of the partial frame
- *@param append decides wether to reset the buffer or not
+ *@param append decides whether to reset the buffer or not
  */
 static void save_bits(WMAProDecodeCtx *s, GetBitContext* gb, int len,
                       int append)
diff --git a/libavcodec/wmavoice.c b/libavcodec/wmavoice.c
index 6f3a6b2372..00e985d230 100644
--- a/libavcodec/wmavoice.c
+++ b/libavcodec/wmavoice.c
@@ -189,7 +189,7 @@ typedef struct {
      * @{
      */
     int spillover_nbits;          ///< number of bits of the previous packet's
-                                  ///< last superframe preceeding this
+                                  ///< last superframe preceding this
                                   ///< packet's first full superframe (useful
                                   ///< for re-synchronization also)
     int has_residual_lsps;        ///< if set, superframes contain one set of
@@ -1805,7 +1805,7 @@ static int synth_superframe(AVCodecContext *ctx, int *got_frame_ptr)
     s->frame.nb_samples = n_samples;
     samples = (float *)s->frame.data[0];
 
-    /* Parse frames, optionally preceeded by per-frame (independent) LSPs. */
+    /* Parse frames, optionally preceded by per-frame (independent) LSPs. */
     for (n = 0; n < 3; n++) {
         if (!s->has_residual_lsps) {
             int m;
diff --git a/libavcodec/x86/vc1dsp_yasm.asm b/libavcodec/x86/vc1dsp_yasm.asm
index 220cc03da3..66f61dba6a 100644
--- a/libavcodec/x86/vc1dsp_yasm.asm
+++ b/libavcodec/x86/vc1dsp_yasm.asm
@@ -227,7 +227,7 @@ section .text
     imul r2, 0x01010101
 %endmacro
 
-; I dont know why the sign extension is needed...
+; I do not know why the sign extension is needed...
 %macro PSIGNW_SRA_MMX 2
     psraw %2, 15
     PSIGNW_MMX %1, %2