mirror of https://github.com/mpv-player/mpv
98 lines
2.1 KiB
C
98 lines
2.1 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include "mp_image.h"
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#include "vf.h"
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struct vf_priv_s {
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int x, y, w, h;
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};
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static void
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put_image(struct vf_instance_s* vf, mp_image_t* mpi){
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mp_image_t* dmpi;
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int x, y, w, h;
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unsigned int bpp, count;
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unsigned char *p1, *p2;
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dmpi = vf_get_image(vf->next, mpi->imgfmt, MP_IMGTYPE_TEMP, 0, mpi->w, mpi->h);
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bpp = dmpi->bpp / 8;
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memcpy(dmpi->planes[0], mpi->planes[0], dmpi->stride[0] * bpp * mpi->height);
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memcpy(dmpi->planes[1], mpi->planes[1], dmpi->stride[1] * mpi->chroma_height);
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memcpy(dmpi->planes[2], mpi->planes[2], dmpi->stride[2] * mpi->chroma_height);
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/* Draw the rectangle */
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x = vf->priv->x;
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if (x < 0)
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x = 0;
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y = vf->priv->y;
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if (y < 0)
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y = 0;
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w = vf->priv->w;
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if (w < 0)
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w = dmpi->w - x;
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h = vf->priv->h;
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if (h < 0)
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h = dmpi->h - y;
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count = w * bpp;
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p1 = dmpi->planes[0] + y * dmpi->stride[0] + x * bpp;
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if (h == 1)
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while (count--) {
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*p1 = 0xff - *p1;
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++p1;
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}
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else {
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p2 = p1 + (h - 1) * dmpi->stride[0];
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while (count--) {
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*p1 = 0xff - *p1;
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++p1;
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*p2 = 0xff - *p2;
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++p2;
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}
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}
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count = h;
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p1 = dmpi->planes[0] + y * dmpi->stride[0] + x * bpp;
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if (w == 1)
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while (count--) {
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int i = bpp;
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while (i--)
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p1[i] ^= 0xff;
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p1 += dmpi->stride[0];
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}
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else {
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p2 = p1 + (w - 1) * bpp;
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while (count--) {
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int i = bpp;
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while (i--) {
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p1[i] = 0xff - p1[i];
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p2[i] = 0xff - p2[i];
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}
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p1 += dmpi->stride[0];
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p2 += dmpi->stride[0];
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}
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}
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vf_next_put_image(vf, dmpi);
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}
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static int
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open(vf_instance_t* vf, char* args) {
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vf->put_image = put_image;
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vf->priv = malloc(sizeof(struct vf_priv_s));
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vf->priv->x = -1;
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vf->priv->y = -1;
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vf->priv->w = -1;
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vf->priv->h = -1;
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if (args)
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sscanf(args, "%d:%d:%d:%d",
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&vf->priv->w, &vf->priv->h, &vf->priv->x, &vf->priv->y);
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printf("Crop: %d x %d, %d ; %d\n",
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vf->priv->w, vf->priv->h, vf->priv->x, vf->priv->y);
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return 1;
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}
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vf_info_t vf_info_rectangle = {
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"draw rectangle",
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"rectangle",
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"Kim Minh Kaplan",
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"",
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open
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};
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