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https://git.videolan.org/git/ffmpeg.git
synced 2024-09-10 09:31:06 +02:00
avcodec/mpegvideo: flip motion vector visualization for backward motion vectors
Also support changing arrow head/tail shape Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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@ -2036,10 +2036,15 @@ static void draw_line(uint8_t *buf, int sx, int sy, int ex, int ey,
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* @param color color of the arrow
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*/
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static void draw_arrow(uint8_t *buf, int sx, int sy, int ex,
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int ey, int w, int h, int stride, int color)
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int ey, int w, int h, int stride, int color, int tail, int direction)
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{
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int dx,dy;
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if (direction) {
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FFSWAP(int, sx, ex);
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FFSWAP(int, sy, ey);
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}
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sx = av_clip(sx, -100, w + 100);
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sy = av_clip(sy, -100, h + 100);
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ex = av_clip(ex, -100, w + 100);
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@ -2057,6 +2062,11 @@ static void draw_arrow(uint8_t *buf, int sx, int sy, int ex,
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rx = ROUNDED_DIV(rx * 3 << 4, length);
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ry = ROUNDED_DIV(ry * 3 << 4, length);
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if (tail) {
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rx = -rx;
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ry = -ry;
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}
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draw_line(buf, sx, sy, sx + rx, sy + ry, w, h, stride, color);
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draw_line(buf, sx, sy, sx - ry, sy + rx, w, h, stride, color);
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}
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@ -2210,7 +2220,7 @@ void ff_print_debug_info2(AVCodecContext *avctx, AVFrame *pict, uint8_t *mbskip_
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int mx = (motion_val[direction][xy][0] >> shift) + sx;
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int my = (motion_val[direction][xy][1] >> shift) + sy;
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draw_arrow(ptr, sx, sy, mx, my, width,
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height, pict->linesize[0], 100);
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height, pict->linesize[0], 100, 0, direction);
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}
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} else if (IS_16X8(mbtype_table[mb_index])) {
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int i;
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@ -2225,7 +2235,7 @@ void ff_print_debug_info2(AVCodecContext *avctx, AVFrame *pict, uint8_t *mbskip_
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my *= 2;
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draw_arrow(ptr, sx, sy, mx + sx, my + sy, width,
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height, pict->linesize[0], 100);
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height, pict->linesize[0], 100, 0, direction);
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}
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} else if (IS_8X16(mbtype_table[mb_index])) {
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int i;
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@ -2240,7 +2250,7 @@ void ff_print_debug_info2(AVCodecContext *avctx, AVFrame *pict, uint8_t *mbskip_
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my *= 2;
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draw_arrow(ptr, sx, sy, mx + sx, my + sy, width,
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height, pict->linesize[0], 100);
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height, pict->linesize[0], 100, 0, direction);
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}
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} else {
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int sx= mb_x * 16 + 8;
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@ -2248,7 +2258,7 @@ void ff_print_debug_info2(AVCodecContext *avctx, AVFrame *pict, uint8_t *mbskip_
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int xy= (mb_x + mb_y * mv_stride) << mv_sample_log2;
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int mx= (motion_val[direction][xy][0]>>shift) + sx;
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int my= (motion_val[direction][xy][1]>>shift) + sy;
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draw_arrow(ptr, sx, sy, mx, my, width, height, pict->linesize[0], 100);
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draw_arrow(ptr, sx, sy, mx, my, width, height, pict->linesize[0], 100, 0, direction);
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}
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}
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}
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