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RFC 5: Mouse cursor painting reduc and more cleanups
- License is for FFmpeg, not "this program" - Rewrite mouse cursor painting functions - Cosmetic on 2 function declarations (patch by Edouard Gomez) Originally committed as revision 7307 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Edouard Gomez
Guillaume Poirier
parent
aac105fcd1
commit
0235a3116e
@ -24,9 +24,9 @@
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "avformat.h"
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@ -241,35 +241,21 @@ getCurrentPointer(AVFormatContext *s1, X11Grab *s, int *x, int *y)
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}
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}
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#define DRAW_CURSOR_TEMPLATE(type_t) \
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do { \
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type_t *cursor; \
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int width_cursor; \
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uint16_t bm_b, bm_w, mask; \
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\
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for (line = 0; line < min(20, (y_off + height) - *y); line++ ) { \
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if (s->mouse_wanted == 1) { \
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bm_b = mousePointerBlack[line]; \
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bm_w = mousePointerWhite[line]; \
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} else { \
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bm_b = mousePointerWhite[line]; \
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bm_w = mousePointerBlack[line]; \
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} \
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mask = ( 0x0001 << 15 ); \
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\
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for (cursor = (type_t*) im_data, width_cursor = 0; \
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((width_cursor + *x) < (width + x_off) && width_cursor < 16); \
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cursor++, width_cursor++) { \
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if ( ( bm_b & mask ) > 0 ) { \
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*cursor &= ((~ image->red_mask) & (~ image->green_mask) & (~image->blue_mask )); \
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} else if ( ( bm_w & mask ) > 0 ) { \
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*cursor |= (image->red_mask | image->green_mask | image->blue_mask ); \
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} \
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mask >>= 1; \
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} \
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im_data += image->bytes_per_line; \
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} \
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} while (0)
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static void inline
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apply_masks(uint8_t *dst, int and, int or, int bits_per_pixel)
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{
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switch (bits_per_pixel) {
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case 32:
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*(uint32_t*)dst = (*(uint32_t*)dst & and) | or;
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break;
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case 16:
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*(uint16_t*)dst = (*(uint16_t*)dst & and) | or;
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break;
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case 8:
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*dst = (or) ? 1 : 0;
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break;
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}
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}
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static void
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paintMousePointer(AVFormatContext *s1, X11Grab *s, int *x, int *y, XImage *image)
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@ -299,20 +285,74 @@ paintMousePointer(AVFormatContext *s1, X11Grab *s, int *x, int *y, XImage *image
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&& (*y - y_off) >= 0 && *y < (height + y_off) ) {
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int line;
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uint8_t *im_data = (uint8_t*)image->data;
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const uint16_t *black;
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const uint16_t *white;
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int masks;
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int onepixel;
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im_data += (image->bytes_per_line * (*y - y_off)); // shift to right line
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im_data += (image->bits_per_pixel / 8 * (*x - x_off)); // shift to right pixel
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/* Select correct pointer pixels */
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if (s->mouse_wanted == 1) {
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/* Normal pointer */
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black = mousePointerBlack;
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white = mousePointerWhite;
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} else {
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/* Inverted pointer */
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black = mousePointerWhite;
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white = mousePointerBlack;
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}
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switch(image->bits_per_pixel) {
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/* Select correct masks and pixel size */
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switch (image->bits_per_pixel) {
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case 32:
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DRAW_CURSOR_TEMPLATE(uint32_t);
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masks = (image->red_mask|image->green_mask|image->blue_mask);
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onepixel = 4;
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break;
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case 24:
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/* XXX: Though the code seems to support 24bit images, the
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* apply_masks lacks support for 24bit */
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masks = (image->red_mask|image->green_mask|image->blue_mask);
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onepixel = 3;
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break;
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case 16:
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DRAW_CURSOR_TEMPLATE(uint16_t);
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masks = (image->red_mask|image->green_mask|image->blue_mask);
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onepixel = 2;
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break;
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case 8:
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masks = 1;
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onepixel = 1;
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break;
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default:
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/* XXX: How do we deal with 24bit and 8bit modes ? */
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break;
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/* Shut up gcc */
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masks = 0;
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onepixel = 0;
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}
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/* Shift to right line */
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im_data += (image->bytes_per_line * (*y - y_off));
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/* Shift to right pixel */
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im_data += (image->bits_per_pixel / 8 * (*x - x_off));
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/* Draw the cursor - proper loop */
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for (line = 0; line < min(20, (y_off + height) - *y); line++) {
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uint8_t *cursor = im_data;
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int width_cursor;
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uint16_t bm_b;
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uint16_t bm_w;
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bm_b = black[line];
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bm_w = white[line];
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for (width_cursor=0;
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width_cursor < 16 && (width_cursor + *x) < (width + x_off);
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width_cursor++) {
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apply_masks(cursor,
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~(masks*(bm_b&1)), masks*(bm_w&1),
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image->bits_per_pixel);
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cursor += onepixel;
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bm_b >>= 1;
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bm_w >>= 1;
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}
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im_data += image->bytes_per_line;
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}
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}
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}
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@ -359,7 +399,8 @@ XGetZPixmap(Display *dpy, Drawable d, XImage *image, int x, int y)
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return True;
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}
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static int x11grab_read_packet(AVFormatContext *s1, AVPacket *pkt)
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static int
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x11grab_read_packet(AVFormatContext *s1, AVPacket *pkt)
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{
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X11Grab *s = s1->priv_data;
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Display *dpy = s->dpy;
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@ -416,7 +457,8 @@ static int x11grab_read_packet(AVFormatContext *s1, AVPacket *pkt)
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return s->frame_size;
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}
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static int x11grab_read_close(AVFormatContext *s1)
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static int
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x11grab_read_close(AVFormatContext *s1)
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{
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X11Grab *x11grab = s1->priv_data;
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