misc typo fixes

Originally committed as revision 9291 to svn://svn.ffmpeg.org/ffmpeg/trunk

doc/snow.txt

@@ -184,10 +184,10 @@ Neighboring Blocks:
 left and top are set to the respective blocks unless they are outside of
 the image in which case they are set to the Null block
 
-top-left is set to the top left block unless its outside of the image in
+top-left is set to the top left block unless it is outside of the image in
 which case it is set to the left block
 
-if this block has no larger parent block or its at the left side of its
+if this block has no larger parent block or it is at the left side of its
 parent block and the top right block is not outside of the image then the
 top right block is used for top-right else the top-left block is used
 

libavcodec/adpcm.c

@@ -1272,7 +1272,7 @@ static int adpcm_decode_frame(AVCodecContext *avctx,
 
         init_get_bits(&gb, buf, size);
 
-        //read bits & inital values
+        //read bits & initial values
         nb_bits = get_bits(&gb, 2)+2;
         //av_log(NULL,AV_LOG_INFO,"nb_bits: %d\n", nb_bits);
         table = swf_index_tables[nb_bits-2];

libavcodec/dsputil.c

@@ -3139,7 +3139,7 @@ void ff_block_permute(DCTELEM *block, uint8_t *permutation, const uint8_t *scant
     DCTELEM temp[64];
 
     if(last<=0) return;
-    //if(permutation[1]==1) return; //FIXME its ok but not clean and might fail for some perms
+    //if(permutation[1]==1) return; //FIXME it is ok but not clean and might fail for some permutations
 
     for(i=0; i<=last; i++){
         const int j= scantable[i];

libavcodec/eval.h

@@ -68,7 +68,7 @@ typedef struct ff_expr_s AVEvalExpr;
  * @param func1_name NULL terminated array of zero terminated strings of func1 identifers
  * @param func2_name NULL terminated array of zero terminated strings of func2 identifers
  * @param error pointer to a char* which is set to an error message if something goes wrong
- * @return AVEvalExpr which must be freed with ff_eval_free by the user when its not needed anymore
+ * @return AVEvalExpr which must be freed with ff_eval_free by the user when it is not needed anymore
  *         NULL if anything went wrong
  */
 AVEvalExpr * ff_parse(char *s, const char **const_name,

libavcodec/flicvideo.c

@@ -584,7 +584,7 @@ static int flic_decode_frame_15_16BPP(AVCodecContext *avctx,
                  * a second pass over the line here, swapping the bytes.
                  */
                 pixel = 0xFF00;
-                if (0xFF00 != AV_RL16(&pixel)) /* Check if its not an LE Target */
+                if (0xFF00 != AV_RL16(&pixel)) /* Check if it is not an LE target */
                 {
                   pixel_ptr = y_ptr;
                   pixel_countdown = s->avctx->width;

libavcodec/h261dec.c

@@ -164,7 +164,7 @@ static int ff_h261_resync(H261Context *h){
             if(ret>=0)
                 return 0;
         }
-        //ok, its not where its supposed to be ...
+        //OK, it is not where it is supposed to be ...
         s->gb= s->last_resync_gb;
         align_get_bits(&s->gb);
         left= s->gb.size_in_bits - get_bits_count(&s->gb);

libavcodec/h263.c

@@ -3386,7 +3386,7 @@ int ff_h263_resync(MpegEncContext *s){
         if(ret>=0)
             return 0;
     }
-    //ok, it's not where its supposed to be ...
+    //OK, it's not where it is supposed to be ...
     s->gb= s->last_resync_gb;
     align_get_bits(&s->gb);
     left= s->gb.size_in_bits - get_bits_count(&s->gb);
@@ -4720,7 +4720,7 @@ retry:
         i += run;
         if (i >= 64){
             if(s->alt_inter_vlc && rl == &rl_inter && !s->mb_intra){
-                //looks like a hack but no, it's the way its supposed to work ...
+                //Looks like a hack but no, it's the way it is supposed to work ...
                 rl = &rl_intra_aic;
                 i = 0;
                 s->gb= gb;

libavcodec/h264.c

@@ -1446,7 +1446,7 @@ static uint8_t *decode_nal(H264Context *h, uint8_t *src, int *dst_length, int *c
 
     *dst_length= di;
     *consumed= si + 1;//+1 for the header
-//FIXME store exact number of bits in the getbitcontext (its needed for decoding)
+//FIXME store exact number of bits in the getbitcontext (it is needed for decoding)
     return dst;
 }
 

libavcodec/h264.h

@@ -34,7 +34,7 @@
 #include "mpegvideo.h"
 
 #define interlaced_dct interlaced_dct_is_a_bad_name
-#define mb_intra mb_intra_is_not_initalized_see_mb_type
+#define mb_intra mb_intra_is_not_initialized_see_mb_type
 
 #define LUMA_DC_BLOCK_INDEX   25
 #define CHROMA_DC_BLOCK_INDEX 26

libavcodec/huffyuv.c

@@ -1169,7 +1169,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, uint8
                 decode_bgr_bitstream(s, width-1);
                 add_left_prediction_bgr32(p->data[0] + last_line+4, s->temp[0], width-1, &leftr, &leftg, &leftb);
 
-                for(y=s->height-2; y>=0; y--){ //yes its stored upside down
+                for(y=s->height-2; y>=0; y--){ //Yes it is stored upside down.
                     decode_bgr_bitstream(s, width);
 
                     add_left_prediction_bgr32(p->data[0] + p->linesize[0]*y, s->temp[0], width, &leftr, &leftg, &leftb);

libavcodec/i386/idct_mmx.c

@@ -33,7 +33,7 @@
 #define rounder(bias) {round (bias), round (bias)}
 
 #if 0
-/* C row IDCT - its just here to document the MMXEXT and MMX versions */
+/* C row IDCT - it is just here to document the MMXEXT and MMX versions */
 static inline void idct_row (int16_t * row, int offset,
                              int16_t * table, int32_t * rounder)
 {
@@ -313,7 +313,7 @@ static inline void mmx_row_mid (int16_t * row, int store,
 
 
 #if 0
-// C column IDCT - its just here to document the MMXEXT and MMX versions
+// C column IDCT - it is just here to document the MMXEXT and MMX versions
 static inline void idct_col (int16_t * col, int offset)
 {
 /* multiplication - as implemented on mmx */

libavcodec/i386/mpegvideo_mmx_template.c

@@ -96,7 +96,7 @@ static int RENAME(dct_quantize)(MpegEncContext *s,
                             int qscale, int *overflow)
 {
     long last_non_zero_p1;
-    int level=0, q; //=0 is cuz gcc says uninitalized ...
+    int level=0, q; //=0 is cuz gcc says uninitialized ...
     const uint16_t *qmat, *bias;
     DECLARE_ALIGNED_16(int16_t, temp_block[64]);
 

libavcodec/motion_est.c

@@ -1807,7 +1807,7 @@ static inline int direct_search(MpegEncContext * s, int mb_x, int mb_y)
     P_LEFT[1]        = av_clip(mv_table[mot_xy - 1][1], ymin<<shift, ymax<<shift);
 
     /* special case for first line */
-    if (!s->first_slice_line) { //FIXME maybe allow this over thread boundary as its clipped
+    if (!s->first_slice_line) { //FIXME maybe allow this over thread boundary as it is clipped
         P_TOP[0]      = av_clip(mv_table[mot_xy - mot_stride             ][0], xmin<<shift, xmax<<shift);
         P_TOP[1]      = av_clip(mv_table[mot_xy - mot_stride             ][1], ymin<<shift, ymax<<shift);
         P_TOPRIGHT[0] = av_clip(mv_table[mot_xy - mot_stride + 1         ][0], xmin<<shift, xmax<<shift);

libavcodec/mpeg12.c

@@ -3205,7 +3205,7 @@ static int mpeg_decode_frame(AVCodecContext *avctx,
                         return -1;
                     }
                 if(!s2->current_picture_ptr){
-                    av_log(avctx, AV_LOG_ERROR, "current_picture not initalized\n");
+                    av_log(avctx, AV_LOG_ERROR, "current_picture not initialized\n");
                     return -1;
                 }
 

libavcodec/mpeg4data.h

@@ -145,7 +145,8 @@ static RLTable rl_intra = {
     intra_level,
 };
 
-static const uint16_t inter_rvlc[170][2]={ //note this is identical to the intra rvlc except that its reordered
+/* Note this is identical to the intra rvlc except that it is reordered. */
+static const uint16_t inter_rvlc[170][2]={
 {0x0006,  3},{0x0001,  4},{0x0004,  5},{0x001C,  7},
 {0x003C,  8},{0x003D,  8},{0x007C,  9},{0x00FC, 10},
 {0x00FD, 10},{0x01FC, 11},{0x01FD, 11},{0x03FC, 12},

libavcodec/mpegvideo.c

@@ -441,11 +441,12 @@ static int alloc_picture(MpegEncContext *s, Picture *pic, int shared){
         CHECKED_ALLOCZ(pic->pan_scan , 1 * sizeof(AVPanScan))
     }
 
-    //it might be nicer if the application would keep track of these but it would require a API change
+    /* It might be nicer if the application would keep track of these
+     * but it would require an API change. */
     memmove(s->prev_pict_types+1, s->prev_pict_types, PREV_PICT_TYPES_BUFFER_SIZE-1);
     s->prev_pict_types[0]= s->pict_type;
     if(pic->age < PREV_PICT_TYPES_BUFFER_SIZE && s->prev_pict_types[pic->age] == B_TYPE)
-        pic->age= INT_MAX; // skipped MBs in b frames are quite rare in mpeg1/2 and its a bit tricky to skip them anyway
+        pic->age= INT_MAX; // Skipped MBs in B-frames are quite rare in MPEG-1/2 and it is a bit tricky to skip them anyway.
 
     return 0;
 fail: //for the CHECKED_ALLOCZ macro

libavcodec/msmpeg4.c

@@ -88,7 +88,7 @@ int frame_count = 0;
 #include "msmpeg4data.h"
 #include "msmpeg4tab.h"
 
-#ifdef CONFIG_ENCODERS //strangely gcc includes this even if its not references
+#ifdef CONFIG_ENCODERS //strangely gcc includes this even if it is not references
 static uint8_t rl_length[NB_RL_TABLES][MAX_LEVEL+1][MAX_RUN+1][2];
 #endif //CONFIG_ENCODERS
 
@@ -454,7 +454,7 @@ static void msmpeg4_encode_motion(MpegEncContext * s,
              mv->table_mv_bits[code],
              mv->table_mv_code[code]);
     if (code == mv->n) {
-        /* escape : code litterally */
+        /* escape : code literally */
         put_bits(&s->pb, 6, mx);
         put_bits(&s->pb, 6, my);
     }
@@ -983,7 +983,8 @@ static VLC v1_intra_cbpc_vlc;
 static VLC v1_inter_cbpc_vlc;
 static VLC inter_intra_vlc;
 
-/* this table is practically identical to the one from h263 except that its inverted */
+/* This table is practically identical to the one from h263
+ * except that it is inverted. */
 static void init_h263_dc_for_msmpeg4(void)
 {
         int level, uni_code, uni_len;
@@ -1380,7 +1381,7 @@ static void msmpeg4v2_encode_motion(MpegEncContext * s, int val)
 }
 #endif
 
-/* this is identical to h263 except that its range is multiplied by 2 */
+/* This is identical to h263 except that its range is multiplied by 2. */
 static int msmpeg4v2_decode_motion(MpegEncContext * s, int pred, int f_code)
 {
     int code, val, sign, shift;

libavcodec/resample2.c

@@ -177,8 +177,8 @@ void av_build_filter(FELEM *filter, double factor, int tap_count, int phase_coun
 }
 
 /**
- * initalizes a audio resampler.
- * note, if either rate is not a integer then simply scale both rates up so they are
+ * Initializes an audio resampler.
+ * Note, if either rate is not an integer then simply scale both rates up so they are.
  */
 AVResampleContext *av_resample_init(int out_rate, int in_rate, int filter_size, int phase_shift, int linear, double cutoff){
     AVResampleContext *c= av_mallocz(sizeof(AVResampleContext));

libavformat/avformat.h

@@ -259,7 +259,7 @@ typedef struct AVIndexEntry {
     int64_t timestamp;
 #define AVINDEX_KEYFRAME 0x0001
     int flags:2;
-    int size:30; //yeah trying to keep the size of this small to reduce memory requirements (its 24 vs 32 byte due to possible 8byte align)
+    int size:30; //Yeah, trying to keep the size of this small to reduce memory requirements (it is 24 vs 32 byte due to possible 8byte align).
     int min_distance;         /**< min distance between this and the previous keyframe, used to avoid unneeded searching */
 } AVIndexEntry;
 
@@ -720,10 +720,10 @@ int av_write_frame(AVFormatContext *s, AVPacket *pkt);
  *
  * The packet must contain one audio or video frame.
  * If the packets are already correctly interleaved the application should
- * call av_write_frame() instead as it is slightly faster, it is also important
- * to keep in mind that completly non interleaved input will need huge amounts
- * of memory to interleave with this, so its prefereable to interleave at the
- * demuxer level
+ * call av_write_frame() instead as it is slightly faster. It is also important
+ * to keep in mind that completely non-interleaved input will need huge amounts
+ * of memory to interleave with this, so it is preferable to interleave at the
+ * demuxer level.
  *
  * @param s media file handle
  * @param pkt the packet, which contains the stream_index, buf/buf_size, dts/pts, ...

libavformat/avio.h

@@ -85,9 +85,9 @@ void url_set_interrupt_cb(URLInterruptCB *interrupt_cb);
 int url_poll(URLPollEntry *poll_table, int n, int timeout);
 
 /**
- * passing this as the "whence" parameter to a seek function causes it to
- * return the filesize without seeking anywhere, supporting this is optional
- * if its not supprted then the seek function will return <0
+ * Passing this as the "whence" parameter to a seek function causes it to
+ * return the filesize without seeking anywhere. Supporting this is optional.
+ * If it is not supported then the seek function will return <0.
  */
 #define AVSEEK_SIZE 0x10000