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vo_xv: implement screenshots

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Caveat: the OSD will be included in the screenshots when the screenshot is
taken during normal playback. This doesn't happen when a screenshot is
taken while playback is paused.

Fixing this would introduce a small performance reduction during normal
playback, which is unacceptable for a possibly rarely used optional
feature.

Due to the nature of the Xv API, taking a screenshot of the scaled video
isn't possible either.
This commit is contained in:
wm4 2011-10-06 20:46:01 +02:00 committed by Uoti Urpala
parent 28eaf11cf3
commit 3215ec05fe
1 changed files with 51 additions and 0 deletions
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51
libvo/vo_xv.c
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@ -98,6 +98,8 @@ struct xvctx {
uint32_t image_width;
uint32_t image_height;
uint32_t image_format;
uint32_t image_d_width;
uint32_t image_d_height;
int is_paused;
struct vo_rect src_rect;
struct vo_rect dst_rect;
@ -212,6 +214,8 @@ static int config(struct vo *vo, uint32_t width, uint32_t height,
ctx->image_height = height;
ctx->image_width = width;
ctx->image_format = format;
ctx->image_d_width = d_width;
ctx->image_d_height = d_height;
if ((ctx->max_width != 0 && ctx->max_height != 0)
&& (ctx->image_width > ctx->max_width
@ -521,6 +525,48 @@ static int draw_slice(struct vo *vo, uint8_t *image[], int stride[], int w,
return 0;
}
static mp_image_t *get_screenshot(struct vo *vo) {
struct xvctx *ctx = vo->priv;
// try to get an image without OSD
if (ctx->have_visible_image_copy)
copy_backup_image(vo, ctx->visible_buf, ctx->num_buffers);
XvImage *xv_image = ctx->xvimage[ctx->visible_buf];
int w = xv_image->width;
int h = xv_image->height;
mp_image_t *image = alloc_mpi(w, h, ctx->image_format);
int bytes = 1;
if (!(image->flags & MP_IMGFLAG_PLANAR) && (image->flags & MP_IMGFLAG_YUV))
// packed YUV
bytes = image->bpp / 8;
memcpy_pic(image->planes[0], xv_image->data + xv_image->offsets[0],
bytes * w, h, image->stride[0], xv_image->pitches[0]);
if (image->flags & MP_IMGFLAG_PLANAR) {
int swap = ctx->image_format == IMGFMT_YV12;
int p1 = swap ? 2 : 1;
int p2 = swap ? 1 : 2;
w /= 2;
h /= 2;
memcpy_pic(image->planes[p1], xv_image->data + xv_image->offsets[1],
w, h, image->stride[p1], xv_image->pitches[1]);
memcpy_pic(image->planes[p2], xv_image->data + xv_image->offsets[2],
w, h, image->stride[p2], xv_image->pitches[2]);
}
image->w = ctx->image_d_width;
image->h = ctx->image_d_height;
return image;
}
static uint32_t draw_image(struct vo *vo, mp_image_t *mpi)
{
struct xvctx *ctx = vo->priv;
@ -829,6 +875,11 @@ static int control(struct vo *vo, uint32_t request, void *data)
return VO_TRUE;
case VOCTRL_REDRAW_OSD:
return redraw_osd(vo, data);
case VOCTRL_SCREENSHOT: {
struct voctrl_screenshot_args *args = data;
args->out_image = get_screenshot(vo);
return true;
}
}
return VO_NOTIMPL;
}