motion_val doxy

Originally committed as revision 3776 to svn://svn.ffmpeg.org/ffmpeg/trunk

motion_val doxy
Originally committed as revision 3776 to svn://svn.ffmpeg.org/ffmpeg/trunk
61436073 · Michael Niedermayer · 5ad984c9 · 61436073
Commit 61436073 authored Dec 29, 2004 by Michael Niedermayer
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avcodec.h libavcodec/avcodec.h +8 -1

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--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -476,7 +476,14 @@ typedef struct AVPanScan{
    uint8_t *mbskip_table;\
 \
    /**\
-     * Motion vector table\
+     * Motion vector table.\
+     * @code\
+     * example:\
+     * int mv_sample_log2= 4 - motion_subsample_log2;\
+     * int mb_width= (width+15)>>4;\
+     * int mv_stride= (mb_width << mv_sample_log2) + 1;\
+     * motion_val[direction][x + y*mv_stride][0->mv_x, 1->mv_y];\
+     * @endcode\
     * - encoding: set by user\
     * - decoding: set by lavc\
     */\