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FS-10050: [core] chromakey optimization

This commit is contained in:
Mike Jerris 2017-03-03 17:46:23 -06:00
parent 08fa9f62ae
commit 478d6c6815
1 changed files with 32 additions and 30 deletions
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62
src/switch_core_video.c
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@ -346,41 +346,43 @@ SWITCH_DECLARE(void) switch_img_patch_rgb(switch_image_t *IMG, switch_image_t *i
switch_img_patch_rgb_noalpha(IMG, img, x, y);
return;
}
if (IMG->d_w == img->d_w && IMG->d_h == img->d_h) {
ARGBAttenuate(img->planes[SWITCH_PLANE_PACKED], img->stride[SWITCH_PLANE_PACKED],
img->planes[SWITCH_PLANE_PACKED], img->stride[SWITCH_PLANE_PACKED],
img->d_w, img->d_h);
ARGBBlend(img->planes[SWITCH_PLANE_PACKED], img->stride[SWITCH_PLANE_PACKED],
IMG->planes[SWITCH_PLANE_PACKED], IMG->stride[SWITCH_PLANE_PACKED],
IMG->planes[SWITCH_PLANE_PACKED], IMG->stride[SWITCH_PLANE_PACKED],
IMG->d_w, IMG->d_h);
return;
}
if (img->fmt == SWITCH_IMG_FMT_ARGB && IMG->fmt == SWITCH_IMG_FMT_ARGB) {
int max_w = MIN(img->d_w, IMG->d_w - abs(x));
int max_h = MIN(img->d_h, IMG->d_h - abs(y));
int j;
uint8_t alpha, alphadiff;
switch_rgb_color_t *rgb, *RGB;
uint8* src_argb0 = img->planes[SWITCH_PLANE_PACKED];
int src_stride_argb0 = img->stride[SWITCH_PLANE_PACKED];
uint8* src_argb1 = IMG->planes[SWITCH_PLANE_PACKED];
int src_stride_argb1 = IMG->stride[SWITCH_PLANE_PACKED];
uint8* dst_argb = IMG->planes[SWITCH_PLANE_PACKED];
int dst_stride_argb = IMG->stride[SWITCH_PLANE_PACKED];
int width = MIN(img->d_w, IMG->d_w - abs(x));
int height = MIN(img->d_h, IMG->d_h - abs(y));
void (*ARGBBlendRow)(const uint8* src_argb, const uint8* src_argb1, uint8* dst_argb, int width) = GetARGBBlend();
for (i = 0; i < max_h; i++) {
for (j = 0; j < max_w; j++) {
rgb = (switch_rgb_color_t *)(img->planes[SWITCH_PLANE_PACKED] + i * img->stride[SWITCH_PLANE_PACKED] + j * 4);
RGB = (switch_rgb_color_t *)(IMG->planes[SWITCH_PLANE_PACKED] + (y + i) * IMG->stride[SWITCH_PLANE_PACKED] + (x + j) * 4);
ARGBAttenuate(src_argb0, src_stride_argb0, src_argb0, src_stride_argb0, img->d_w, img->d_h);
alpha = rgb->a;
// Coalesce rows. we have same size images, treat as a single row
if (src_stride_argb0 == width * 4 &&
src_stride_argb1 == width * 4 &&
x == 0 && y == 0) {
width *= height;
height = 1;
src_stride_argb0 = src_stride_argb1 = dst_stride_argb = 0;
}
if (alpha == 255) {
*RGB = *rgb;
} else if (alpha != 0) {
alphadiff = 255 - alpha;
RGB->a = 255;
RGB->r = ((RGB->r * alphadiff) + (rgb->r * alpha)) >> 8;
RGB->g = ((RGB->g * alphadiff) + (rgb->g * alpha)) >> 8;
RGB->b = ((RGB->b * alphadiff) + (rgb->b * alpha)) >> 8;
}
}
if (y) {
src_argb1 += (y * IMG->d_w * 4);
dst_argb += (y * IMG->d_w * 4);
}
if (x) {
src_argb1 += (x * 4);
dst_argb += (x * 4);
}
for (i = 0; i < height; ++i) {
ARGBBlendRow(src_argb0, src_argb1, dst_argb, width);
src_argb0 += src_stride_argb0;
src_argb1 += src_stride_argb1;
dst_argb += dst_stride_argb;
}
}
}