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/* Libvisual-plugins - Standard plugins for libvisual
*
* Copyright (C) 2004, 2005, 2006 Dennis Smit <ds@nerds-incorporated.org>
*
* Authors: Dennis Smit <ds@nerds-incorporated.org>
*
* $Id: morph_alphablend.c,v 1.19 2006/01/27 20:19:18 synap Exp $
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the Lesser GNU General Public License as
* published by the Free Software Foundation; either version 2.1
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <libvisual/libvisual.h>
typedef struct {
uint16_t b:5, g:6, r:5;
} _color16;
static inline int alpha_blend_buffer (uint8_t *dest, uint8_t *src1, uint8_t *src2, int size, int depth, float alpha);
/* alpha blenders */
static inline int alpha_blend_8_c (uint8_t *dest, uint8_t *src1, uint8_t *src2, int size, float alpha);
static inline int alpha_blend_16_c (uint8_t *dest, uint8_t *src1, uint8_t *src2, int size, float alpha);
static inline int alpha_blend_24_c (uint8_t *dest, uint8_t *src1, uint8_t *src2, int size, float alpha);
static inline int alpha_blend_32_c (uint8_t *dest, uint8_t *src1, uint8_t *src2, int size, float alpha);
static inline int alpha_blend_8_mmx (uint8_t *dest, uint8_t *src1, uint8_t *src2, int size, float alpha);
static inline int alpha_blend_16_mmx (uint8_t *dest, uint8_t *src1, uint8_t *src2, int size, float alpha);
static inline int alpha_blend_24_mmx (uint8_t *dest, uint8_t *src1, uint8_t *src2, int size, float alpha);
static inline int alpha_blend_32_mmx (uint8_t *dest, uint8_t *src1, uint8_t *src2, int size, float alpha);
int lv_morph_alpha_init (VisPluginData *plugin);
int lv_morph_alpha_cleanup (VisPluginData *plugin);
int lv_morph_alpha_apply (VisPluginData *plugin, float rate, VisAudio *audio, VisVideo *dest, VisVideo *src1, VisVideo *src2);
VISUAL_PLUGIN_API_VERSION_VALIDATOR
const VisPluginInfo *get_plugin_info (int *count)
{
static VisMorphPlugin morph[] = {{
.apply = lv_morph_alpha_apply,
.vidoptions.depth =
VISUAL_VIDEO_DEPTH_8BIT |
VISUAL_VIDEO_DEPTH_16BIT |
VISUAL_VIDEO_DEPTH_24BIT |
VISUAL_VIDEO_DEPTH_32BIT
}};
static VisPluginInfo info[] = {{
.type = VISUAL_PLUGIN_TYPE_MORPH,
.plugname = "alphablend",
.name = "alphablend morph",
.author = "Dennis Smit <ds@nerds-incorporated.org>",
.version = "0.1",
.about = "An alphablend morph plugin",
.help = "This morph plugin morphs between two video sources using the alphablend method",
.license = VISUAL_PLUGIN_LICENSE_LGPL,
.init = lv_morph_alpha_init,
.cleanup = lv_morph_alpha_cleanup,
.plugin = VISUAL_OBJECT (&morph[0])
}};
*count = sizeof (info) / sizeof (*info);
return info;
}
int lv_morph_alpha_init (VisPluginData *plugin)
{
return 0;
}
int lv_morph_alpha_cleanup (VisPluginData *plugin)
{
return 0;
}
int lv_morph_alpha_apply (VisPluginData *plugin, float rate, VisAudio *audio, VisVideo *dest, VisVideo *src1, VisVideo *src2)
{
visual_log_return_val_if_fail (dest != NULL, -1);
visual_log_return_val_if_fail (src1 != NULL, -1);
visual_log_return_val_if_fail (src2 != NULL, -1);
alpha_blend_buffer (visual_video_get_pixels (dest),
visual_video_get_pixels (src1),
visual_video_get_pixels (src2),
visual_video_get_size (dest), dest->depth, rate);
return 0;
}
static inline int alpha_blend_buffer (uint8_t *dest, uint8_t *src1, uint8_t *src2, int size, int depth, float alpha)
{
if (visual_cpu_get_mmx ()) {
if (depth == VISUAL_VIDEO_DEPTH_8BIT)
return alpha_blend_8_mmx (dest, src1, src2, size, alpha);
if (depth == VISUAL_VIDEO_DEPTH_16BIT)
return alpha_blend_16_mmx (dest, src1, src2, size, alpha);
if (depth == VISUAL_VIDEO_DEPTH_24BIT)
return alpha_blend_24_mmx (dest, src1, src2, size, alpha);
if (depth == VISUAL_VIDEO_DEPTH_32BIT)
return alpha_blend_32_mmx (dest, src1, src2, size, alpha);
} else {
if (depth == VISUAL_VIDEO_DEPTH_8BIT)
return alpha_blend_8_c (dest, src1, src2, size, alpha);
if (depth == VISUAL_VIDEO_DEPTH_16BIT)
return alpha_blend_16_c (dest, src1, src2, size, alpha);
if (depth == VISUAL_VIDEO_DEPTH_24BIT)
return alpha_blend_24_c (dest, src1, src2, size, alpha);
if (depth == VISUAL_VIDEO_DEPTH_32BIT)
return alpha_blend_32_c (dest, src1, src2, size, alpha);
}
return -1;
}
/* FIXME TODO blends: c sse mmx
* 8 x x
* 16 x
* 24 x
* 32 x x
*/
static inline int alpha_blend_8_c (uint8_t *dest, uint8_t *src1, uint8_t *src2, int size, float alpha)
{
uint8_t ialpha = (alpha * 255);
int i;
for (i = 0; i < size; i++) {
dest[i] = (ialpha * (src2[i] - src1[i])) / 255 + src1[i];
}
return 0;
}
static inline int alpha_blend_16_c (uint8_t *dest, uint8_t *src1, uint8_t *src2, int size, float alpha)
{
uint8_t ialpha = (alpha * 255);
_color16 *destr = (_color16 *) dest;
_color16 *src1r = (_color16 *) src1;
_color16 *src2r = (_color16 *) src2;
int i;
for (i = 0; i < size / 2; i++) {
destr[i].r = ((ialpha * (src2r[i].r - src1r[i].r)) / 255 + src1r[i].r);
destr[i].g = ((ialpha * (src2r[i].g - src1r[i].g)) / 255 + src1r[i].g);
destr[i].b = ((ialpha * (src2r[i].b - src1r[i].b)) / 255 + src1r[i].b);
}
return 0;
}
static inline int alpha_blend_24_c (uint8_t *dest, uint8_t *src1, uint8_t *src2, int size, float alpha)
{
uint8_t ialpha = (alpha * 255);
int i;
for (i = 0; i < size; i++) {
dest[i] = (ialpha * (src2[i] - src1[i])) / 255 + src1[i];
}
return 0;
}
static inline int alpha_blend_32_c (uint8_t *dest, uint8_t *src1, uint8_t *src2, int size, float alpha)
{
uint8_t ialpha = (alpha * 255);
int i;
for (i = 0; i < size; i++) {
dest[i] = (ialpha * (src2[i] - src1[i])) / 255 + src1[i];
}
return 0;
}
static inline int alpha_blend_8_mmx (uint8_t *dest, uint8_t *src1, uint8_t *src2, int size, float alpha)
{
uint32_t aalpha = (alpha * 255);
uint32_t ialpha = aalpha;
int i;
ialpha |= ialpha << 16;
#ifdef VISUAL_ARCH_X86
__asm __volatile
("\n\t pxor %%mm6, %%mm6"
::);
for (i = size; i > 4; i -= 4) {
__asm __volatile
("\n\t movd %[alpha], %%mm3"
"\n\t movd %[src2], %%mm0"
"\n\t psllq $32, %%mm3"
"\n\t movd %[alpha], %%mm2"
"\n\t movd %[src1], %%mm1"
"\n\t por %%mm3, %%mm2"
"\n\t punpcklbw %%mm6, %%mm0" /* interleaving dest */
"\n\t punpcklbw %%mm6, %%mm1" /* interleaving source */
"\n\t psubsw %%mm1, %%mm0" /* (src - dest) part */
"\n\t pmullw %%mm2, %%mm0" /* alpha * (src - dest) */
"\n\t psrlw $8, %%mm0" /* / 256 */
"\n\t paddb %%mm1, %%mm0" /* + dest */
"\n\t packuswb %%mm0, %%mm0"
"\n\t movd %%mm0, %[dest]"
: [dest] "=m" (*(dest + i))
: [src1] "m" (*(src1 + i))
, [src2] "m" (*(src2 + i))
, [alpha] "m" (ialpha));
}
while (i--)
dest[i] = (aalpha * (src2[i] - src1[i])) / 255 + src1[i];
__asm __volatile
("\n\t emms");
#endif
return 0;
}
static inline int alpha_blend_16_mmx (uint8_t *dest, uint8_t *src1, uint8_t *src2, int size, float alpha)
{
uint8_t ialpha = (alpha * 255);
_color16 *destr = (_color16 *) dest;
_color16 *src1r = (_color16 *) src1;
_color16 *src2r = (_color16 *) src2;
int i;
for (i = 0; i < size / 2; i++) {
destr[i].r = ((ialpha * (src2r[i].r - src1r[i].r)) / 255 + src1r[i].r);
destr[i].g = ((ialpha * (src2r[i].g - src1r[i].g)) / 255 + src1r[i].g);
destr[i].b = ((ialpha * (src2r[i].b - src1r[i].b)) / 255 + src1r[i].b);
}
return 0;
}
static inline int alpha_blend_24_mmx (uint8_t *dest, uint8_t *src1, uint8_t *src2, int size, float alpha)
{
uint8_t ialpha = (alpha * 255);
int i;
for (i = 0; i < size; i++) {
dest[i] = (ialpha * (src2[i] - src1[i])) / 255 + src1[i];
}
return 0;
}
static inline int alpha_blend_32_mmx (uint8_t *dest, uint8_t *src1, uint8_t *src2, int size, float alpha)
{
uint32_t ialpha = (alpha * 255);
int i;
#ifdef VISUAL_ARCH_X86
__asm __volatile
("\n\t pxor %%mm6, %%mm6"
::);
for (i = 0; i < size; i += 4) {
__asm __volatile
("\n\t movd %[src2], %%mm0"
"\n\t movd %[alpha], %%mm2"
"\n\t movd %[src1], %%mm1"
"\n\t psllq $32, %%mm2"
"\n\t movd %[alpha], %%mm3"
"\n\t movd %[alpha], %%mm4"
"\n\t psllq $16, %%mm3"
"\n\t por %%mm4, %%mm2"
"\n\t punpcklbw %%mm6, %%mm0" /* interleaving dest */
"\n\t por %%mm3, %%mm2"
"\n\t punpcklbw %%mm6, %%mm1" /* interleaving source */
"\n\t psubsw %%mm1, %%mm0" /* (src - dest) part */
"\n\t pmullw %%mm2, %%mm0" /* alpha * (src - dest) */
"\n\t psrlw $8, %%mm0" /* / 256 */
"\n\t paddb %%mm1, %%mm0" /* + dest */
"\n\t packuswb %%mm0, %%mm0"
"\n\t movd %%mm0, %[dest]"
: [dest] "=m" (*(dest + i))
: [src1] "m" (*(src1 + i))
, [src2] "m" (*(src2 + i))
, [alpha] "m" (ialpha));
}
__asm __volatile
("\n\t emms");
#endif
return 0;
}
|
