Commit bcd6e8fe authored by Rémi Denis-Courmont's avatar Rémi Denis-Courmont
Browse files

XCB: always match the embedding window color depth

This simplifies XCB-X11 a little bit, and speeds up failure cases of
XCB-XV. More importantly, it will enable ARGB rendering for XCB-X11.
parent 174ba148
......@@ -93,6 +93,7 @@ xcb_connection_t *Connect (vlc_object_t *obj)
vout_window_t *GetWindow (vout_display_t *vd,
xcb_connection_t *conn,
const xcb_screen_t **restrict pscreen,
uint8_t *restrict pdepth,
bool *restrict pshm)
{
/* Get window */
......@@ -123,6 +124,7 @@ vout_window_t *GetWindow (vout_display_t *vd,
goto error;
}
root = geo->root;
*pdepth = geo->depth;
free (geo);
/* Subscribe to parent window resize events */
......
......@@ -120,7 +120,8 @@ static int Open (vlc_object_t *obj)
/* Get window */
const xcb_screen_t *scr;
p_sys->embed = GetWindow (vd, p_sys->conn, &scr, &p_sys->shm);
p_sys->embed = GetWindow (vd, p_sys->conn, &scr, &p_sys->depth,
&p_sys->shm);
if (p_sys->embed == NULL)
{
xcb_disconnect (p_sys->conn);
......@@ -134,44 +135,83 @@ static int Open (vlc_object_t *obj)
/* */
video_format_t fmt_pic = vd->fmt;
/* Determine our video format. */
/* Check that the selected screen supports this depth */
xcb_depth_t *d = NULL;
for (xcb_depth_iterator_t it = xcb_screen_allowed_depths_iterator (scr);
it.rem > 0 && d == NULL;
xcb_depth_next (&it))
if (it.data->depth == p_sys->depth)
d = it.data;
if (d == NULL)
{
msg_Err (obj, "unexpected color depth msimatch");
goto error; /* WTH? depth not supported on screen */
}
/* Find a visual type for the selected depth */
xcb_visualid_t vid = 0;
uint8_t depth = 0;
bool gray = true;
const xcb_visualtype_t *vt = xcb_depth_visuals (d);
for (int i = xcb_depth_visuals_length (d); i > 0; i--)
{
if (vt->_class == XCB_VISUAL_CLASS_TRUE_COLOR)
{
vid = vt->visual_id;
fmt_pic.i_rmask = vt->red_mask;
fmt_pic.i_gmask = vt->green_mask;
fmt_pic.i_bmask = vt->blue_mask;
gray = false;
break;
}
if (p_sys->depth == 8 && vt->_class == XCB_VISUAL_CLASS_STATIC_GRAY
&& vid == 0)
{
vid = vt->visual_id;
}
}
if (!vid)
{
msg_Err (obj, "unexpected visual type mismatch");
goto error;
}
msg_Dbg (vd, "using X11 visual ID 0x%"PRIx32" (depth: %"PRIu8")", vid,
p_sys->depth);
/* Determine our pixel format */
p_sys->bpp = 0;
for (const xcb_format_t *fmt = xcb_setup_pixmap_formats (setup),
*end = fmt + xcb_setup_pixmap_formats_length (setup);
fmt < end; fmt++)
fmt < end && !p_sys->bpp; fmt++)
{
vlc_fourcc_t chroma = 0;
if (fmt->depth < depth)
continue; /* We already found a better format! */
if (fmt->depth != p_sys->depth)
continue; /* Wrong depth! */
/* Check that the pixmap format is supported by VLC. */
switch (fmt->depth)
{
case 24:
if (fmt->bits_per_pixel == 32)
chroma = VLC_CODEC_RGB32;
fmt_pic.i_chroma = VLC_CODEC_RGB32;
else if (fmt->bits_per_pixel == 24)
chroma = VLC_CODEC_RGB24;
fmt_pic.i_chroma = VLC_CODEC_RGB24;
else
continue;
break;
case 16:
if (fmt->bits_per_pixel != 16)
continue;
chroma = VLC_CODEC_RGB16;
fmt_pic.i_chroma = VLC_CODEC_RGB16;
break;
case 15:
if (fmt->bits_per_pixel != 16)
continue;
chroma = VLC_CODEC_RGB15;
fmt_pic.i_chroma = VLC_CODEC_RGB15;
break;
case 8:
if (fmt->bits_per_pixel != 8)
continue;
chroma = VLC_CODEC_RGB8;
fmt_pic.i_chroma = gray ? VLC_CODEC_GREY : VLC_CODEC_RGB8;
break;
default:
continue;
......@@ -184,57 +224,18 @@ static int Open (vlc_object_t *obj)
if (fmt->bits_per_pixel == 16 && setup->image_byte_order != ORDER)
continue;
/* Check that the selected screen supports this depth */
xcb_depth_iterator_t it = xcb_screen_allowed_depths_iterator (scr);
while (it.rem > 0 && it.data->depth != fmt->depth)
xcb_depth_next (&it);
if (!it.rem)
continue; /* Depth not supported on this screen */
/* Find a visual type for the selected depth */
const xcb_visualtype_t *vt = xcb_depth_visuals (it.data);
for (int i = xcb_depth_visuals_length (it.data); i > 0; i--)
{
if (vt->_class == XCB_VISUAL_CLASS_TRUE_COLOR)
{
gray = false;
goto found_vt;
}
if (fmt->depth == 8 && vt->_class == XCB_VISUAL_CLASS_STATIC_GRAY)
{
if (!gray)
continue; /* Prefer color over gray scale */
chroma = VLC_CODEC_GREY;
goto found_vt;
}
}
continue; /* The screen does not *really* support this depth */
found_vt:
fmt_pic.i_chroma = chroma;
vid = vt->visual_id;
if (!gray)
{
fmt_pic.i_rmask = vt->red_mask;
fmt_pic.i_gmask = vt->green_mask;
fmt_pic.i_bmask = vt->blue_mask;
}
p_sys->bpp = fmt->bits_per_pixel;
p_sys->pad = fmt->scanline_pad;
p_sys->depth = depth = fmt->depth;
msg_Dbg (vd, " %"PRIu8" bits per pixels, %"PRIu8" bits line pad",
p_sys->bpp, p_sys->pad);
}
if (depth == 0)
if (!p_sys->bpp)
{
msg_Err (vd, "no supported pixmap formats or visual types");
msg_Err (vd, "no supported pixmap formats");
goto error;
}
msg_Dbg (vd, "using X11 visual ID 0x%"PRIx32" (depth: %"PRIu8")", vid,
p_sys->depth);
msg_Dbg (vd, " %"PRIu8" bits per pixels, %"PRIu8" bits line pad",
p_sys->bpp, p_sys->pad);
/* Create colormap (needed to select non-default visual) */
xcb_colormap_t cmap;
if (vid != scr->root_visual)
......@@ -263,7 +264,8 @@ static int Open (vlc_object_t *obj)
};
xcb_void_cookie_t c;
c = xcb_create_window_checked (p_sys->conn, depth, p_sys->window,
c = xcb_create_window_checked (p_sys->conn, p_sys->depth,
p_sys->window,
p_sys->embed->handle.xid, 0, 0,
width, height, 0,
XCB_WINDOW_CLASS_INPUT_OUTPUT,
......
......@@ -42,6 +42,7 @@ xcb_connection_t *Connect (vlc_object_t *obj);
struct vout_window_t *GetWindow (vout_display_t *obj,
xcb_connection_t *pconn,
const xcb_screen_t **restrict pscreen,
uint8_t *restrict pdepth,
bool *restrict pshm);
int GetWindowSize (struct vout_window_t *wnd, xcb_connection_t *conn,
unsigned *restrict width, unsigned *restrict height);
......
......@@ -309,7 +309,8 @@ static int Open (vlc_object_t *obj)
}
const xcb_screen_t *screen;
p_sys->embed = GetWindow (vd, conn, &screen, &p_sys->shm);
uint8_t depth;
p_sys->embed = GetWindow (vd, conn, &screen, &depth, &p_sys->shm);
if (p_sys->embed == NULL)
{
xcb_disconnect (conn);
......@@ -440,6 +441,9 @@ static int Open (vlc_object_t *obj)
xcb_xv_format_t *f = xcb_xv_adaptor_info_formats (a);
for (uint_fast16_t i = a->num_formats; i > 0; i--, f++)
{
if (f->depth != depth)
continue; /* this would fail anyway */
const uint32_t mask =
/* XCB_CW_EVENT_MASK */
XCB_EVENT_MASK_VISIBILITY_CHANGE;
......
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