diff --git a/libavformat/x11grab.c b/libavformat/x11grab.c index 29b238bd3e..44bde85399 100644 --- a/libavformat/x11grab.c +++ b/libavformat/x11grab.c @@ -24,9 +24,9 @@ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * - * You should have received a copy of the GNU Lesser General Public - * License along with FFmpeg; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ #include "avformat.h" @@ -241,35 +241,21 @@ getCurrentPointer(AVFormatContext *s1, X11Grab *s, int *x, int *y) } } -#define DRAW_CURSOR_TEMPLATE(type_t) \ - do { \ - type_t *cursor; \ - int width_cursor; \ - uint16_t bm_b, bm_w, mask; \ - \ - for (line = 0; line < min(20, (y_off + height) - *y); line++ ) { \ - if (s->mouse_wanted == 1) { \ - bm_b = mousePointerBlack[line]; \ - bm_w = mousePointerWhite[line]; \ - } else { \ - bm_b = mousePointerWhite[line]; \ - bm_w = mousePointerBlack[line]; \ - } \ - mask = ( 0x0001 << 15 ); \ - \ - for (cursor = (type_t*) im_data, width_cursor = 0; \ - ((width_cursor + *x) < (width + x_off) && width_cursor < 16); \ - cursor++, width_cursor++) { \ - if ( ( bm_b & mask ) > 0 ) { \ - *cursor &= ((~ image->red_mask) & (~ image->green_mask) & (~image->blue_mask )); \ - } else if ( ( bm_w & mask ) > 0 ) { \ - *cursor |= (image->red_mask | image->green_mask | image->blue_mask ); \ - } \ - mask >>= 1; \ - } \ - im_data += image->bytes_per_line; \ - } \ - } while (0) +static void inline +apply_masks(uint8_t *dst, int and, int or, int bits_per_pixel) +{ + switch (bits_per_pixel) { + case 32: + *(uint32_t*)dst = (*(uint32_t*)dst & and) | or; + break; + case 16: + *(uint16_t*)dst = (*(uint16_t*)dst & and) | or; + break; + case 8: + *dst = (or) ? 1 : 0; + break; + } +} static void paintMousePointer(AVFormatContext *s1, X11Grab *s, int *x, int *y, XImage *image) @@ -299,20 +285,74 @@ paintMousePointer(AVFormatContext *s1, X11Grab *s, int *x, int *y, XImage *image && (*y - y_off) >= 0 && *y < (height + y_off) ) { int line; uint8_t *im_data = (uint8_t*)image->data; + const uint16_t *black; + const uint16_t *white; + int masks; + int onepixel; - im_data += (image->bytes_per_line * (*y - y_off)); // shift to right line - im_data += (image->bits_per_pixel / 8 * (*x - x_off)); // shift to right pixel + /* Select correct pointer pixels */ + if (s->mouse_wanted == 1) { + /* Normal pointer */ + black = mousePointerBlack; + white = mousePointerWhite; + } else { + /* Inverted pointer */ + black = mousePointerWhite; + white = mousePointerBlack; + } - switch(image->bits_per_pixel) { + /* Select correct masks and pixel size */ + switch (image->bits_per_pixel) { case 32: - DRAW_CURSOR_TEMPLATE(uint32_t); + masks = (image->red_mask|image->green_mask|image->blue_mask); + onepixel = 4; + break; + case 24: + /* XXX: Though the code seems to support 24bit images, the + * apply_masks lacks support for 24bit */ + masks = (image->red_mask|image->green_mask|image->blue_mask); + onepixel = 3; break; case 16: - DRAW_CURSOR_TEMPLATE(uint16_t); + masks = (image->red_mask|image->green_mask|image->blue_mask); + onepixel = 2; + break; + case 8: + masks = 1; + onepixel = 1; break; default: - /* XXX: How do we deal with 24bit and 8bit modes ? */ - break; + /* Shut up gcc */ + masks = 0; + onepixel = 0; + } + + /* Shift to right line */ + im_data += (image->bytes_per_line * (*y - y_off)); + /* Shift to right pixel */ + im_data += (image->bits_per_pixel / 8 * (*x - x_off)); + + /* Draw the cursor - proper loop */ + for (line = 0; line < min(20, (y_off + height) - *y); line++) { + uint8_t *cursor = im_data; + int width_cursor; + uint16_t bm_b; + uint16_t bm_w; + + bm_b = black[line]; + bm_w = white[line]; + + for (width_cursor=0; + width_cursor < 16 && (width_cursor + *x) < (width + x_off); + width_cursor++) { + apply_masks(cursor, + ~(masks*(bm_b&1)), masks*(bm_w&1), + image->bits_per_pixel); + cursor += onepixel; + bm_b >>= 1; + bm_w >>= 1; + } + im_data += image->bytes_per_line; } } }