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FS-7500: fix patch and fill on an odd position

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Seven Du 2015-02-13 10:37:35 +08:00 committed by Michael Jerris
parent b808099f6a
commit 061bcb063a
1 changed files with 16 additions and 4 deletions
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20
src/switch_core_video.c
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@ -81,21 +81,27 @@ SWITCH_DECLARE(void) switch_img_free(switch_image_t **img)
// simple implementation to patch a small img to a big IMG at position x,y
SWITCH_DECLARE(void) switch_img_patch(switch_image_t *IMG, switch_image_t *img, int x, int y)
{
int i, len;
int i, len, max_h;
switch_assert(img->fmt == SWITCH_IMG_FMT_I420);
switch_assert(IMG->fmt == SWITCH_IMG_FMT_I420);
max_h = MIN(y + img->d_h, IMG->d_h);
len = MIN(img->d_w, IMG->d_w - x);
if (x & 0x1) { x++; len--; }
if (y & 0x1) y++;
if (len <= 0) return;
for (i = y; i < (y + img->d_h) && i < IMG->d_h; i++) {
memcpy(IMG->planes[SWITCH_PLANE_Y] + IMG->stride[SWITCH_PLANE_Y] * i + x, img->planes[SWITCH_PLANE_Y] + img->stride[SWITCH_PLANE_Y] * (i - y), len);
}
if ((len & 1) && (x + len) < img->d_w) len++;
len /= 2;
for (i = y; i < (y + img->d_h) && i < IMG->d_h; i += 2) {
for (i = y; i < max_h; i += 2) {
memcpy(IMG->planes[SWITCH_PLANE_U] + IMG->stride[SWITCH_PLANE_U] * i / 2 + x / 2, img->planes[SWITCH_PLANE_U] + img->stride[SWITCH_PLANE_U] * (i - y) / 2, len);
memcpy(IMG->planes[SWITCH_PLANE_V] + IMG->stride[SWITCH_PLANE_V] * i / 2 + x / 2, img->planes[SWITCH_PLANE_V] + img->stride[SWITCH_PLANE_V] * (i - y) / 2, len);
}
@ -177,23 +183,29 @@ SWITCH_DECLARE(void) switch_img_draw_pixel(switch_image_t *img, int x, int y, sw
SWITCH_DECLARE(void) switch_img_fill(switch_image_t *img, int x, int y, int w, int h, switch_rgb_color_t *color)
{
int len, i;
int len, i, max_h;
switch_yuv_color_t yuv_color;
if (x < 0 || y < 0 || x >= img->d_w || y >= img->d_h) return;
switch_color_rgb2yuv(color, &yuv_color);
max_h = MIN(y + h, img->d_h);
len = MIN(w, img->d_w - x);
if (x & 1) { x++; len--; }
if (y & 1) y++;
if (len <= 0) return;
for (i = y; i < (y + h) && i < img->d_h; i++) {
memset(img->planes[SWITCH_PLANE_Y] + img->stride[SWITCH_PLANE_Y] * i + x, yuv_color.y, len);
}
if ((len & 1) && (x + len) < img->d_w) len++;
len /= 2;
for (i = y; i < (y + h) && i < img->d_h; i += 2) {
for (i = y; i < max_h; i += 2) {
memset(img->planes[SWITCH_PLANE_U] + img->stride[SWITCH_PLANE_U] * i / 2 + x / 2, yuv_color.u, len);
memset(img->planes[SWITCH_PLANE_V] + img->stride[SWITCH_PLANE_V] * i / 2 + x / 2, yuv_color.v, len);
}