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15/16 bpp dithering

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Originally committed as revision 2750 to svn://svn.mplayerhq.hu/mplayer/trunk/postproc
This commit is contained in:
Michael Niedermayer 2001-11-06 19:16:49 +00:00
parent d8fa3c5497
commit da3b92c877
1 changed files with 40 additions and 1 deletions
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41
postproc/yuv2rgb_template.c
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@ -23,7 +23,7 @@
* along with GNU Make; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*
* 15 and 24 bpp support from Michael Niedermayer (michaelni@gmx.at)
* 15,24 bpp and dithering from Michael Niedermayer (michaelni@gmx.at)
*/
#include <stdio.h>
@ -38,6 +38,8 @@
#include "rgb2rgb.h"
#include "../mmx_defs.h"
#define DITHER1XBPP
/* hope these constant values are cache line aligned */
uint64_t __attribute__((aligned(8))) mmx_80w = 0x0080008000800080;
uint64_t __attribute__((aligned(8))) mmx_10w = 0x1010101010101010;
@ -58,6 +60,22 @@ uint64_t __attribute__((aligned(8))) M24A= 0x00FF0000FF0000FFLL;
uint64_t __attribute__((aligned(8))) M24B= 0xFF0000FF0000FF00LL;
uint64_t __attribute__((aligned(8))) M24C= 0x0000FF0000FF0000LL;
// the volatile is required because gcc otherwise optimizes some writes away not knowing that these
// are read in the asm block
volatile uint64_t __attribute__((aligned(8))) b5Dither;
volatile uint64_t __attribute__((aligned(8))) g5Dither;
volatile uint64_t __attribute__((aligned(8))) g6Dither;
volatile uint64_t __attribute__((aligned(8))) r5Dither;
uint64_t __attribute__((aligned(8))) dither4[2]={
0x0103010301030103LL,
0x0200020002000200LL,};
uint64_t __attribute__((aligned(8))) dither8[2]={
0x0602060206020602LL,
0x0004000400040004LL,};
#define YUV2RGB \
/* Do the multiply part of the conversion for even and odd pixels,
@ -150,6 +168,11 @@ static void yuv420_rgb16_mmx (uint8_t * image, uint8_t * py,
uint8_t *_pu = pu;
uint8_t *_pv = pv;
b5Dither= dither8[y&1];
g6Dither= dither4[y&1];
g5Dither= dither8[y&1];
r5Dither= dither8[(y+1)&1];
/* load data for start of next scan line */
__asm__ __volatile__ (
"movd (%1), %%mm0;" /* Load 4 Cb 00 00 00 00 u3 u2 u1 u0 */
@ -171,6 +194,11 @@ static void yuv420_rgb16_mmx (uint8_t * image, uint8_t * py,
*/
YUV2RGB
#ifdef DITHER1XBPP
"paddusb b5Dither, %%mm0;"
"paddusb g6Dither, %%mm2;"
"paddusb r5Dither, %%mm1;"
#endif
/* mask unneeded bits off */
"pand mmx_redmask, %%mm0;" /* b7b6b5b4 b3_0_0_0 b7b6b5b4 b3_0_0_0 */
"pand mmx_grnmask, %%mm2;" /* g7g6g5g4 g3g2_0_0 g7g6g5g4 g3g2_0_0 */
@ -241,6 +269,11 @@ static void yuv420_rgb15_mmx (uint8_t * image, uint8_t * py,
uint8_t *_pu = pu;
uint8_t *_pv = pv;
b5Dither= dither8[y&1];
g6Dither= dither4[y&1];
g5Dither= dither8[y&1];
r5Dither= dither8[(y+1)&1];
/* load data for start of next scan line */
__asm__ __volatile__ (
"movd (%1), %%mm0;" /* Load 4 Cb 00 00 00 00 u3 u2 u1 u0 */
@ -256,6 +289,12 @@ static void yuv420_rgb15_mmx (uint8_t * image, uint8_t * py,
__asm__ __volatile__ (
YUV2RGB
#ifdef DITHER1XBPP
"paddusb b5Dither, %%mm0 \n\t"
"paddusb g5Dither, %%mm2 \n\t"
"paddusb r5Dither, %%mm1 \n\t"
#endif
/* mask unneeded bits off */
"pand mmx_redmask, %%mm0;" /* b7b6b5b4 b3_0_0_0 b7b6b5b4 b3_0_0_0 */
"pand mmx_redmask, %%mm2;" /* g7g6g5g4 g3_0_0_0 g7g6g5g4 g3_0_0_0 */