diff options
Diffstat (limited to 'video.c')
| -rw-r--r-- | video.c | 61 |
1 files changed, 60 insertions, 1 deletions
@@ -7768,8 +7768,66 @@ uint8_t *VideoGrab(int *size, int *width, int *height) char buf[64]; int i; int n; - + int scale_width; + int scale_height; + int x; + int y; + double src_x; + double src_y; + double scale_x; + double scale_y; + + scale_width = *width; + scale_height = *height; data = VdpauGrabOutputSurface(size, width, height); + +#if 1 + if (scale_width <= 0) { + scale_width = *width; + } + if (scale_height <= 0) { + scale_height = *height; + } + + n = snprintf(buf, sizeof(buf), "P6\n%d\n%d\n255\n", scale_width, + scale_height); + rgb = malloc(scale_width * scale_height * 3 + n); + if (!rgb) { + Error(_("video: out of memory\n")); + free(data); + return NULL; + } + *size = scale_width * scale_height * 3 + n; + memcpy(rgb, buf, n); // header + + scale_x = (double)*width / scale_width; + scale_y = (double)*height / scale_height; + + src_y = 0.0; + for (y = 0; y < scale_height; y++) { + int o; + + src_x = 0.0; + o = (int)src_y **width; + + for (x = 0; x < scale_width; x++) { + i = 4 * (o + (int)src_x); + + rgb[n + (x + y * scale_width) * 3 + 0] = data[i + 2]; + rgb[n + (x + y * scale_width) * 3 + 1] = data[i + 1]; + rgb[n + (x + y * scale_width) * 3 + 2] = data[i + 0]; + + src_x += scale_x; + } + + src_y += scale_y; + } + + *width = scale_width; + *height = scale_height; + + free(data); +#else n = snprintf(buf, sizeof(buf), "P6\n%d\n%d\n255\n", *width, *height); rgb = malloc(*width * *height * 3 + n); if (!rgb) { @@ -7787,6 +7845,7 @@ uint8_t *VideoGrab(int *size, int *width, int *height) free(data); *size = *width * *height * 3 + n; +#endif return rgb; } |