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FFmpeg/libavcodec/imgconvert.c

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/*
* Misc image convertion routines
* Copyright (c) 2001, 2002, 2003 Fabrice Bellard.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/**
* @file imgconvert.c
* Misc image convertion routines.
*/
#include "avcodec.h"
#include "dsputil.h"
#ifdef USE_FASTMEMCPY
#include "fastmemcpy.h"
#endif
#ifdef HAVE_MMX
#include "i386/mmx.h"
#endif
typedef struct PixFmtInfo {
const char *name;
uint8_t nb_components; /* number of components in AVPicture array */
uint8_t is_yuv : 1; /* true if YUV instead of RGB color space */
uint8_t is_packed : 1; /* true if multiple components in same word */
uint8_t is_paletted : 1; /* true if paletted */
uint8_t is_alpha : 1; /* true if alpha can be specified */
uint8_t is_gray : 1; /* true if gray or monochrome format */
uint8_t x_chroma_shift; /* X chroma subsampling factor is 2 ^ shift */
uint8_t y_chroma_shift; /* Y chroma subsampling factor is 2 ^ shift */
} PixFmtInfo;
/* this table gives more information about formats */
static PixFmtInfo pix_fmt_info[PIX_FMT_NB] = {
/* YUV formats */
[PIX_FMT_YUV420P] = {
.name = "yuv420p",
.nb_components = 3, .is_yuv = 1,
.x_chroma_shift = 1, .y_chroma_shift = 1,
},
[PIX_FMT_YUV422P] = {
.name = "yuv422p",
.nb_components = 3, .is_yuv = 1,
.x_chroma_shift = 1, .y_chroma_shift = 0,
},
[PIX_FMT_YUV444P] = {
.name = "yuv444p",
.nb_components = 3, .is_yuv = 1,
.x_chroma_shift = 0, .y_chroma_shift = 0,
},
[PIX_FMT_YUV422] = {
.name = "yuv422",
.nb_components = 1, .is_yuv = 1, .is_packed = 1,
.x_chroma_shift = 1, .y_chroma_shift = 0,
},
[PIX_FMT_YUV410P] = {
.name = "yuv410p",
.nb_components = 3, .is_yuv = 1,
.x_chroma_shift = 2, .y_chroma_shift = 2,
},
[PIX_FMT_YUV411P] = {
.name = "yuv411p",
.nb_components = 3, .is_yuv = 1,
.x_chroma_shift = 2, .y_chroma_shift = 0,
},
/* RGB formats */
[PIX_FMT_RGB24] = {
.name = "rgb24",
.nb_components = 1, .is_packed = 1,
},
[PIX_FMT_BGR24] = {
.name = "bgr24",
.nb_components = 1, .is_packed = 1,
},
[PIX_FMT_RGBA32] = {
.name = "rgba32",
.nb_components = 1, .is_packed = 1, .is_alpha = 1,
},
[PIX_FMT_RGB565] = {
.name = "rgb565",
.nb_components = 1, .is_packed = 1,
},
[PIX_FMT_RGB555] = {
.name = "rgb555",
.nb_components = 1, .is_packed = 1, .is_alpha = 1,
},
/* gray / mono formats */
[PIX_FMT_GRAY8] = {
.name = "gray",
.nb_components = 1, .is_gray = 1,
},
[PIX_FMT_MONOWHITE] = {
.name = "monow",
.nb_components = 1, .is_packed = 1, .is_gray = 1,
},
[PIX_FMT_MONOBLACK] = {
.name = "monob",
.nb_components = 1, .is_packed = 1, .is_gray = 1,
},
/* paletted formats */
[PIX_FMT_PAL8] = {
.name = "pal8",
.nb_components = 1, .is_packed = 1, .is_paletted = 1,
},
};
void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift)
{
if (pix_fmt_info[pix_fmt].is_yuv) {
*h_shift = pix_fmt_info[pix_fmt].x_chroma_shift;
*v_shift = pix_fmt_info[pix_fmt].y_chroma_shift;
} else {
*h_shift=0;
*v_shift=0;
}
}
const char *avcodec_get_pix_fmt_name(int pix_fmt)
{
if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB)
return "???";
else
return pix_fmt_info[pix_fmt].name;
}
/* Picture field are filled with 'ptr' addresses. Also return size */
int avpicture_fill(AVPicture *picture, uint8_t *ptr,
int pix_fmt, int width, int height)
{
int size, w2, h2, size2;
PixFmtInfo *pinfo;
pinfo = &pix_fmt_info[pix_fmt];
size = width * height;
switch(pix_fmt) {
case PIX_FMT_YUV420P:
case PIX_FMT_YUV422P:
case PIX_FMT_YUV444P:
case PIX_FMT_YUV410P:
case PIX_FMT_YUV411P:
w2 = (width + (1 << pinfo->x_chroma_shift) - 1) >> pinfo->x_chroma_shift;
h2 = (height + (1 << pinfo->y_chroma_shift) - 1) >> pinfo->y_chroma_shift;
size2 = w2 * h2;
picture->data[0] = ptr;
picture->data[1] = picture->data[0] + size;
picture->data[2] = picture->data[1] + size2;
picture->linesize[0] = width;
picture->linesize[1] = w2;
picture->linesize[2] = w2;
return size + 2 * size2;
case PIX_FMT_RGB24:
case PIX_FMT_BGR24:
picture->data[0] = ptr;
picture->data[1] = NULL;
picture->data[2] = NULL;
picture->linesize[0] = width * 3;
return size * 3;
case PIX_FMT_RGBA32:
picture->data[0] = ptr;
picture->data[1] = NULL;
picture->data[2] = NULL;
picture->linesize[0] = width * 4;
return size * 4;
case PIX_FMT_RGB555:
case PIX_FMT_RGB565:
case PIX_FMT_YUV422:
picture->data[0] = ptr;
picture->data[1] = NULL;
picture->data[2] = NULL;
picture->linesize[0] = width * 2;
return size * 2;
case PIX_FMT_GRAY8:
picture->data[0] = ptr;
picture->data[1] = NULL;
picture->data[2] = NULL;
picture->linesize[0] = width;
return size;
case PIX_FMT_MONOWHITE:
case PIX_FMT_MONOBLACK:
picture->data[0] = ptr;
picture->data[1] = NULL;
picture->data[2] = NULL;
picture->linesize[0] = (width + 7) >> 3;
return picture->linesize[0] * height;
case PIX_FMT_PAL8:
size2 = (size + 3) & ~3;
picture->data[0] = ptr;
picture->data[1] = ptr + size2; /* palette is stored here as 256 32 bit words */
picture->data[2] = NULL;
picture->linesize[0] = width;
picture->linesize[1] = 4;
return size2 + 256 * 4;
default:
picture->data[0] = NULL;
picture->data[1] = NULL;
picture->data[2] = NULL;
picture->data[3] = NULL;
return -1;
}
}
int avpicture_get_size(int pix_fmt, int width, int height)
{
AVPicture dummy_pict;
return avpicture_fill(&dummy_pict, NULL, pix_fmt, width, height);
}
/* XXX: totally non optimized */
static void yuv422_to_yuv420p(AVPicture *dst, AVPicture *src,
int width, int height)
{
uint8_t *lum, *cb, *cr;
int x, y;
const uint8_t *p;
lum = dst->data[0];
cb = dst->data[1];
cr = dst->data[2];
p = src->data[0];
for(y=0;y<height;y+=2) {
for(x=0;x<width;x+=2) {
lum[0] = p[0];
cb[0] = p[1];
lum[1] = p[2];
cr[0] = p[3];
p += 4;
lum += 2;
cb++;
cr++;
}
for(x=0;x<width;x+=2) {
lum[0] = p[0];
lum[1] = p[2];
p += 4;
lum += 2;
}
}
}
#define SCALEBITS 8
#define ONE_HALF (1 << (SCALEBITS - 1))
#define FIX(x) ((int) ((x) * (1L<<SCALEBITS) + 0.5))
/* XXX: use generic filter ? */
/* 1x2 -> 1x1 */
static void shrink2(uint8_t *dst, int dst_wrap,
uint8_t *src, int src_wrap,
int width, int height)
{
int w;
uint8_t *s1, *s2, *d;
for(;height > 0; height--) {
s1 = src;
s2 = s1 + src_wrap;
d = dst;
for(w = width;w >= 4; w-=4) {
d[0] = (s1[0] + s2[0]) >> 1;
d[1] = (s1[1] + s2[1]) >> 1;
d[2] = (s1[2] + s2[2]) >> 1;
d[3] = (s1[3] + s2[3]) >> 1;
s1 += 4;
s2 += 4;
d += 4;
}
for(;w > 0; w--) {
d[0] = (s1[0] + s2[0]) >> 1;
s1++;
s2++;
d++;
}
src += 2 * src_wrap;
dst += dst_wrap;
}
}
/* 2x2 -> 1x1 */
static void shrink22(uint8_t *dst, int dst_wrap,
uint8_t *src, int src_wrap,
int width, int height)
{
int w;
uint8_t *s1, *s2, *d;
for(;height > 0; height--) {
s1 = src;
s2 = s1 + src_wrap;
d = dst;
for(w = width;w >= 4; w-=4) {
d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 1;
d[1] = (s1[2] + s1[3] + s2[2] + s2[3] + 2) >> 1;
d[2] = (s1[4] + s1[5] + s2[4] + s2[5] + 2) >> 1;
d[3] = (s1[6] + s1[7] + s2[6] + s2[7] + 2) >> 1;
s1 += 8;
s2 += 8;
d += 4;
}
for(;w > 0; w--) {
d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 1;
s1 += 2;
s2 += 2;
d++;
}
src += 2 * src_wrap;
dst += dst_wrap;
}
}
/* 1x1 -> 2x2 */
static void grow22(uint8_t *dst, int dst_wrap,
uint8_t *src, int src_wrap,
int width, int height)
{
int w;
uint8_t *s1, *d;
for(;height > 0; height--) {
s1 = src;
d = dst;
for(w = width;w >= 4; w-=4) {
d[1] = d[0] = s1[0];
d[3] = d[2] = s1[1];
s1 += 2;
d += 4;
}
for(;w > 0; w--) {
d[0] = s1[0];
s1 ++;
d++;
}
if (height%2)
src += src_wrap;
dst += dst_wrap;
}
}
/* 1x2 -> 2x1 */
static void conv411(uint8_t *dst, int dst_wrap,
uint8_t *src, int src_wrap,
int width, int height)
{
int w, c;
uint8_t *s1, *s2, *d;
for(;height > 0; height--) {
s1 = src;
s2 = src + src_wrap;
d = dst;
for(w = width;w > 0; w--) {
c = (s1[0] + s2[0]) >> 1;
d[0] = c;
d[1] = c;
s1++;
s2++;
d += 2;
}
src += src_wrap * 2;
dst += dst_wrap;
}
}
static void img_copy(uint8_t *dst, int dst_wrap,
uint8_t *src, int src_wrap,
int width, int height)
{
for(;height > 0; height--) {
memcpy(dst, src, width);
dst += dst_wrap;
src += src_wrap;
}
}
#define SCALE_BITS 10
#define C_Y (76309 >> (16 - SCALE_BITS))
#define C_RV (117504 >> (16 - SCALE_BITS))
#define C_BU (138453 >> (16 - SCALE_BITS))
#define C_GU (13954 >> (16 - SCALE_BITS))
#define C_GV (34903 >> (16 - SCALE_BITS))
#define YUV_TO_RGB2(r, g, b, y1)\
{\
y = (y1 - 16) * C_Y;\
r = cm[(y + r_add) >> SCALE_BITS];\
g = cm[(y + g_add) >> SCALE_BITS];\
b = cm[(y + b_add) >> SCALE_BITS];\
}
/* XXX: no chroma interpolating is done */
#define RGB_FUNCTIONS(rgb_name) \
\
static void yuv420p_to_ ## rgb_name (AVPicture *dst, AVPicture *src, \
int width, int height) \
{ \
uint8_t *y1_ptr, *y2_ptr, *cb_ptr, *cr_ptr, *d, *d1, *d2; \
int w, y, cb, cr, r_add, g_add, b_add, width2; \
uint8_t *cm = cropTbl + MAX_NEG_CROP; \
unsigned int r, g, b; \
\
d = dst->data[0]; \
y1_ptr = src->data[0]; \
cb_ptr = src->data[1]; \
cr_ptr = src->data[2]; \
width2 = (width + 1) >> 1; \
for(;height >= 2; height -= 2) { \
d1 = d; \
d2 = d + dst->linesize[0]; \
y2_ptr = y1_ptr + src->linesize[0]; \
for(w = width; w >= 2; w -= 2) { \
cb = cb_ptr[0] - 128; \
cr = cr_ptr[0] - 128; \
r_add = C_RV * cr + (1 << (SCALE_BITS - 1)); \
g_add = - C_GU * cb - C_GV * cr + (1 << (SCALE_BITS - 1)); \
b_add = C_BU * cb + (1 << (SCALE_BITS - 1)); \
\
/* output 4 pixels */ \
YUV_TO_RGB2(r, g, b, y1_ptr[0]); \
RGB_OUT(d1, r, g, b); \
\
YUV_TO_RGB2(r, g, b, y1_ptr[1]); \
RGB_OUT(d1 + BPP, r, g, b); \
\
YUV_TO_RGB2(r, g, b, y2_ptr[0]); \
RGB_OUT(d2, r, g, b); \
\
YUV_TO_RGB2(r, g, b, y2_ptr[1]); \
RGB_OUT(d2 + BPP, r, g, b); \
\
d1 += 2 * BPP; \
d2 += 2 * BPP; \
\
y1_ptr += 2; \
y2_ptr += 2; \
cb_ptr++; \
cr_ptr++; \
} \
/* handle odd width */ \
if (w) { \
cb = cb_ptr[0] - 128; \
cr = cr_ptr[0] - 128; \
r_add = C_RV * cr + (1 << (SCALE_BITS - 1)); \
g_add = - C_GU * cb - C_GV * cr + (1 << (SCALE_BITS - 1)); \
b_add = C_BU * cb + (1 << (SCALE_BITS - 1)); \
\
YUV_TO_RGB2(r, g, b, y1_ptr[0]); \
RGB_OUT(d1, r, g, b); \
\
YUV_TO_RGB2(r, g, b, y2_ptr[0]); \
RGB_OUT(d2, r, g, b); \
d1 += BPP; \
d2 += BPP; \
y1_ptr++; \
y2_ptr++; \
cb_ptr++; \
cr_ptr++; \
} \
d += 2 * dst->linesize[0]; \
y1_ptr += 2 * src->linesize[0] - width; \
cb_ptr += src->linesize[1] - width2; \
cr_ptr += src->linesize[2] - width2; \
} \
/* handle odd height */ \
if (height) { \
d1 = d; \
for(w = width; w >= 2; w -= 2) { \
cb = cb_ptr[0] - 128; \
cr = cr_ptr[0] - 128; \
r_add = C_RV * cr + (1 << (SCALE_BITS - 1)); \
g_add = - C_GU * cb - C_GV * cr + (1 << (SCALE_BITS - 1)); \
b_add = C_BU * cb + (1 << (SCALE_BITS - 1)); \
\
/* output 2 pixels */ \
YUV_TO_RGB2(r, g, b, y1_ptr[0]); \
RGB_OUT(d1, r, g, b); \
\
YUV_TO_RGB2(r, g, b, y1_ptr[1]); \
RGB_OUT(d1 + BPP, r, g, b); \
\
d1 += 2 * BPP; \
\
y1_ptr += 2; \
cb_ptr++; \
cr_ptr++; \
} \
/* handle width */ \
if (w) { \
cb = cb_ptr[0] - 128; \
cr = cr_ptr[0] - 128; \
r_add = C_RV * cr + (1 << (SCALE_BITS - 1)); \
g_add = - C_GU * cb - C_GV * cr + (1 << (SCALE_BITS - 1)); \
b_add = C_BU * cb + (1 << (SCALE_BITS - 1)); \
\
/* output 2 pixels */ \
YUV_TO_RGB2(r, g, b, y1_ptr[0]); \
RGB_OUT(d1, r, g, b); \
d1 += BPP; \
\
y1_ptr++; \
cb_ptr++; \
cr_ptr++; \
} \
} \
} \
\
/* XXX: no chroma interpolating is done */ \
static void yuv422p_to_ ## rgb_name (AVPicture *dst, AVPicture *src, \
int width, int height) \
{ \
uint8_t *y1_ptr, *cb_ptr, *cr_ptr, *d, *d1; \
int w, y, cb, cr, r_add, g_add, b_add, width2; \
uint8_t *cm = cropTbl + MAX_NEG_CROP; \
unsigned int r, g, b; \
\
d = dst->data[0]; \
y1_ptr = src->data[0]; \
cb_ptr = src->data[1]; \
cr_ptr = src->data[2]; \
width2 = (width + 1) >> 1; \
for(;height > 0; height --) { \
d1 = d; \
for(w = width; w >= 2; w -= 2) { \
cb = cb_ptr[0] - 128; \
cr = cr_ptr[0] - 128; \
r_add = C_RV * cr + (1 << (SCALE_BITS - 1)); \
g_add = - C_GU * cb - C_GV * cr + (1 << (SCALE_BITS - 1)); \
b_add = C_BU * cb + (1 << (SCALE_BITS - 1)); \
\
/* output 2 pixels */ \
YUV_TO_RGB2(r, g, b, y1_ptr[0]); \
RGB_OUT(d1, r, g, b); \
\
YUV_TO_RGB2(r, g, b, y1_ptr[1]); \
RGB_OUT(d1 + BPP, r, g, b); \
\
d1 += 2 * BPP; \
\
y1_ptr += 2; \
cb_ptr++; \
cr_ptr++; \
} \
/* handle width */ \
if (w) { \
cb = cb_ptr[0] - 128; \
cr = cr_ptr[0] - 128; \
r_add = C_RV * cr + (1 << (SCALE_BITS - 1)); \
g_add = - C_GU * cb - C_GV * cr + (1 << (SCALE_BITS - 1)); \
b_add = C_BU * cb + (1 << (SCALE_BITS - 1)); \
\
/* output 2 pixels */ \
YUV_TO_RGB2(r, g, b, y1_ptr[0]); \
RGB_OUT(d1, r, g, b); \
d1 += BPP; \
\
y1_ptr++; \
cb_ptr++; \
cr_ptr++; \
} \
d += dst->linesize[0]; \
y1_ptr += src->linesize[0] - width; \
cb_ptr += src->linesize[1] - width2; \
cr_ptr += src->linesize[2] - width2; \
} \
} \
\
static void rgb_name ## _to_yuv420p(AVPicture *dst, AVPicture *src, \
int width, int height) \
{ \
int wrap, wrap3, x, y; \
int r, g, b, r1, g1, b1; \
uint8_t *lum, *cb, *cr; \
const uint8_t *p; \
\
lum = dst->data[0]; \
cb = dst->data[1]; \
cr = dst->data[2]; \
\
wrap = dst->linesize[0]; \
wrap3 = src->linesize[0]; \
p = src->data[0]; \
for(y=0;y<height;y+=2) { \
for(x=0;x<width;x+=2) { \
RGB_IN(r, g, b, p); \
r1 = r; \
g1 = g; \
b1 = b; \
lum[0] = (FIX(0.29900) * r + FIX(0.58700) * g + \
FIX(0.11400) * b + ONE_HALF) >> SCALEBITS; \
RGB_IN(r, g, b, p + BPP); \
r1 += r; \
g1 += g; \
b1 += b; \
lum[1] = (FIX(0.29900) * r + FIX(0.58700) * g + \
FIX(0.11400) * b + ONE_HALF) >> SCALEBITS; \
p += wrap3; \
lum += wrap; \
\
RGB_IN(r, g, b, p); \
r1 += r; \
g1 += g; \
b1 += b; \
lum[0] = (FIX(0.29900) * r + FIX(0.58700) * g + \
FIX(0.11400) * b + ONE_HALF) >> SCALEBITS; \
\
RGB_IN(r, g, b, p + BPP); \
r1 += r; \
g1 += g; \
b1 += b; \
lum[1] = (FIX(0.29900) * r + FIX(0.58700) * g + \
FIX(0.11400) * b + ONE_HALF) >> SCALEBITS; \
\
cb[0] = ((- FIX(0.16874) * r1 - FIX(0.33126) * g1 + \
FIX(0.50000) * b1 + 4 * ONE_HALF - 1) >> \
(SCALEBITS + 2)) + 128; \
cr[0] = ((FIX(0.50000) * r1 - FIX(0.41869) * g1 - \
FIX(0.08131) * b1 + 4 * ONE_HALF - 1) >> \
(SCALEBITS + 2)) + 128; \
\
cb++; \
cr++; \
p += -wrap3 + 2 * BPP; \
lum += -wrap + 2; \
} \
p += wrap3 + (wrap3 - width * BPP); \
lum += wrap + (wrap - width); \
cb += dst->linesize[1] - width / 2; \
cr += dst->linesize[2] - width / 2; \
} \
} \
\
static void rgb_name ## _to_gray(AVPicture *dst, AVPicture *src, \
int width, int height) \
{ \
const unsigned char *p; \
unsigned char *q; \
int r, g, b, dst_wrap, src_wrap; \
int x, y; \
\
p = src->data[0]; \
src_wrap = src->linesize[0] - BPP * width; \
\
q = dst->data[0]; \
dst_wrap = dst->linesize[0] - width; \
\
for(y=0;y<height;y++) { \
for(x=0;x<width;x++) { \
RGB_IN(r, g, b, p); \
q[0] = (FIX(0.29900) * r + FIX(0.58700) * g + \
FIX(0.11400) * b + ONE_HALF) >> SCALEBITS; \
q++; \
p += BPP; \
} \
p += src_wrap; \
q += dst_wrap; \
} \
} \
\
static void gray_to_ ## rgb_name(AVPicture *dst, AVPicture *src, \
int width, int height) \
{ \
const unsigned char *p; \
unsigned char *q; \
int r, dst_wrap, src_wrap; \
int x, y; \
\
p = src->data[0]; \
src_wrap = src->linesize[0] - width; \
\
q = dst->data[0]; \
dst_wrap = dst->linesize[0] - BPP * width; \
\
for(y=0;y<height;y++) { \
for(x=0;x<width;x++) { \
r = p[0]; \
RGB_OUT(q, r, r, r); \
q += BPP; \
p ++; \
} \
p += src_wrap; \
q += dst_wrap; \
} \
} \
\
static void pal8_to_ ## rgb_name(AVPicture *dst, AVPicture *src, \
int width, int height) \
{ \
const unsigned char *p; \
unsigned char *q; \
int r, g, b, dst_wrap, src_wrap; \
int x, y; \
uint32_t v;\
const uint32_t *palette;\
\
p = src->data[0]; \
src_wrap = src->linesize[0] - width; \
palette = (uint32_t *)src->data[1];\
\
q = dst->data[0]; \
dst_wrap = dst->linesize[0] - BPP * width; \
\
for(y=0;y<height;y++) { \
for(x=0;x<width;x++) { \
v = palette[p[0]];\
r = (v >> 16) & 0xff;\
g = (v >> 8) & 0xff;\
b = (v) & 0xff;\
RGB_OUT(q, r, g, b); \
q += BPP; \
p ++; \
} \
p += src_wrap; \
q += dst_wrap; \
} \
}
/* copy bit n to bits 0 ... n - 1 */
static inline unsigned int bitcopy_n(unsigned int a, int n)
{
int mask;
mask = (1 << n) - 1;
return (a & (0xff & ~mask)) | ((-((a >> n) & 1)) & mask);
}
/* rgb555 handling */
#define RGB_IN(r, g, b, s)\
{\
unsigned int v = ((const uint16_t *)(s))[0];\
r = bitcopy_n(v >> (10 - 3), 3);\
g = bitcopy_n(v >> (5 - 3), 3);\
b = bitcopy_n(v << 3, 3);\
}
#define RGB_OUT(d, r, g, b)\
{\
((uint16_t *)(d))[0] = ((r >> 3) << 10) | ((g >> 3) << 5) | (b >> 3) | 0x8000;\
}
#define BPP 2
RGB_FUNCTIONS(rgb555)
#undef RGB_IN
#undef RGB_OUT
#undef BPP
/* rgb565 handling */
#define RGB_IN(r, g, b, s)\
{\
unsigned int v = ((const uint16_t *)(s))[0];\
r = bitcopy_n(v >> (11 - 3), 3);\
g = bitcopy_n(v >> (5 - 2), 2);\
b = bitcopy_n(v << 3, 3);\
}
#define RGB_OUT(d, r, g, b)\
{\
((uint16_t *)(d))[0] = ((r >> 3) << 11) | ((g >> 2) << 5) | (b >> 3);\
}
#define BPP 2
RGB_FUNCTIONS(rgb565)
#undef RGB_IN
#undef RGB_OUT
#undef BPP
/* bgr24 handling */
#define RGB_IN(r, g, b, s)\
{\
b = (s)[0];\
g = (s)[1];\
r = (s)[2];\
}
#define RGB_OUT(d, r, g, b)\
{\
(d)[0] = b;\
(d)[1] = g;\
(d)[2] = r;\
}
#define BPP 3
RGB_FUNCTIONS(bgr24)
#undef RGB_IN
#undef RGB_OUT
#undef BPP
/* rgb24 handling */
#define RGB_IN(r, g, b, s)\
{\
r = (s)[0];\
g = (s)[1];\
b = (s)[2];\
}
#define RGB_OUT(d, r, g, b)\
{\
(d)[0] = r;\
(d)[1] = g;\
(d)[2] = b;\
}
#define BPP 3
RGB_FUNCTIONS(rgb24)
#undef RGB_IN
#undef RGB_OUT
#undef BPP
/* rgba32 handling */
#define RGB_IN(r, g, b, s)\
{\
unsigned int v = ((const uint32_t *)(s))[0];\
r = (v >> 16) & 0xff;\
g = (v >> 8) & 0xff;\
b = v & 0xff;\
}
#define RGB_OUT(d, r, g, b)\
{\
((uint32_t *)(d))[0] = (0xff << 24) | (r << 16) | (g << 8) | b;\
}
#define BPP 4
RGB_FUNCTIONS(rgba32)
#undef RGB_IN
#undef RGB_OUT
#undef BPP
static void rgb24_to_rgb565(AVPicture *dst, AVPicture *src,
int width, int height)
{
const unsigned char *p;
unsigned char *q;
int r, g, b, dst_wrap, src_wrap;
int x, y;
p = src->data[0];
src_wrap = src->linesize[0] - 3 * width;
q = dst->data[0];
dst_wrap = dst->linesize[0] - 2 * width;
for(y=0;y<height;y++) {
for(x=0;x<width;x++) {
r = p[0];
g = p[1];
b = p[2];
((unsigned short *)q)[0] =
((r >> 3) << 11) | ((g >> 2) << 5) | (b >> 3);
q += 2;
p += 3;
}
p += src_wrap;
q += dst_wrap;
}
}
/* NOTE: we also add a dummy alpha bit */
static void rgb24_to_rgb555(AVPicture *dst, AVPicture *src,
int width, int height)
{
const unsigned char *p;
unsigned char *q;
int r, g, b, dst_wrap, src_wrap;
int x, y;
p = src->data[0];
src_wrap = src->linesize[0] - 3 * width;
q = dst->data[0];
dst_wrap = dst->linesize[0] - 2 * width;
for(y=0;y<height;y++) {
for(x=0;x<width;x++) {
r = p[0];
g = p[1];
b = p[2];
((unsigned short *)q)[0] =
((r >> 3) << 10) | ((g >> 3) << 5) | (b >> 3) | 0x8000;
q += 2;
p += 3;
}
p += src_wrap;
q += dst_wrap;
}
}
static void mono_to_gray(AVPicture *dst, AVPicture *src,
int width, int height, int xor_mask)
{
const unsigned char *p;
unsigned char *q;
int v, dst_wrap, src_wrap;
int y, w;
p = src->data[0];
src_wrap = src->linesize[0] - ((width + 7) >> 3);
q = dst->data[0];
dst_wrap = dst->linesize[0] - width;
for(y=0;y<height;y++) {
w = width;
while (w >= 8) {
v = *p++ ^ xor_mask;
q[0] = -(v >> 7);
q[1] = -((v >> 6) & 1);
q[2] = -((v >> 5) & 1);
q[3] = -((v >> 4) & 1);
q[4] = -((v >> 3) & 1);
q[5] = -((v >> 2) & 1);
q[6] = -((v >> 1) & 1);
q[7] = -((v >> 0) & 1);
w -= 8;
q += 8;
}
if (w > 0) {
v = *p++ ^ xor_mask;
do {
q[0] = -((v >> 7) & 1);
q++;
v <<= 1;
} while (--w);
}
p += src_wrap;
q += dst_wrap;
}
}
static void monowhite_to_gray(AVPicture *dst, AVPicture *src,
int width, int height)
{
mono_to_gray(dst, src, width, height, 0xff);
}
static void monoblack_to_gray(AVPicture *dst, AVPicture *src,
int width, int height)
{
mono_to_gray(dst, src, width, height, 0x00);
}
static void gray_to_mono(AVPicture *dst, AVPicture *src,
int width, int height, int xor_mask)
{
int n;
const uint8_t *s;
uint8_t *d;
int j, b, v, n1, src_wrap, dst_wrap, y;
s = src->data[0];
src_wrap = src->linesize[0] - width;
d = dst->data[0];
dst_wrap = dst->linesize[0] - ((width + 7) >> 3);
printf("%d %d\n", width, height);
for(y=0;y<height;y++) {
n = width;
while (n >= 8) {
v = 0;
for(j=0;j<8;j++) {
b = s[0];
s++;
v = (v << 1) | (b >> 7);
}
d[0] = v ^ xor_mask;
d++;
n -= 8;
}
if (n > 0) {
n1 = n;
v = 0;
while (n > 0) {
b = s[0];
s++;
v = (v << 1) | (b >> 7);
n--;
}
d[0] = (v << (8 - (n1 & 7))) ^ xor_mask;
d++;
}
s += src_wrap;
d += dst_wrap;
}
}
static void gray_to_monowhite(AVPicture *dst, AVPicture *src,
int width, int height)
{
gray_to_mono(dst, src, width, height, 0xff);
}
static void gray_to_monoblack(AVPicture *dst, AVPicture *src,
int width, int height)
{
gray_to_mono(dst, src, width, height, 0x00);
}
/* this is maybe slow, but allows for extensions */
static inline unsigned char gif_clut_index(uint8_t r, uint8_t g, uint8_t b)
{
return ((((r)/47)%6)*6*6+(((g)/47)%6)*6+(((b)/47)%6));
}
/* XXX: put jpeg quantize code instead */
static void rgb24_to_pal8(AVPicture *dst, AVPicture *src,
int width, int height)
{
const unsigned char *p;
unsigned char *q;
int r, g, b, dst_wrap, src_wrap;
int x, y, i;
static const uint8_t pal_value[6] = { 0x00, 0x33, 0x66, 0x99, 0xcc, 0xff };
uint32_t *pal;
p = src->data[0];
src_wrap = src->linesize[0] - 3 * width;
q = dst->data[0];
dst_wrap = dst->linesize[0] - width;
for(y=0;y<height;y++) {
for(x=0;x<width;x++) {
r = p[0];
g = p[1];
b = p[2];
q[0] = gif_clut_index(r, g, b);
q++;
p += 3;
}
p += src_wrap;
q += dst_wrap;
}
/* build palette */
pal = (uint32_t *)dst->data[1];
i = 0;
for(r = 0; r < 6; r++) {
for(g = 0; g < 6; g++) {
for(b = 0; b < 6; b++) {
pal[i++] = (0xff << 24) | (pal_value[r] << 16) |
(pal_value[g] << 8) | pal_value[b];
}
}
}
while (i < 256)
pal[i++] = 0;
}
typedef struct ConvertEntry {
void (*convert)(AVPicture *dst, AVPicture *src, int width, int height);
} ConvertEntry;
/* add each new convertion function in this table */
/* constraints;
- all non YUV modes must convert at least to and from PIX_FMT_RGB24
*/
static ConvertEntry convert_table[PIX_FMT_NB][PIX_FMT_NB] = {
[PIX_FMT_YUV420P] = {
[PIX_FMT_RGB555] = {
.convert = yuv420p_to_rgb555
},
[PIX_FMT_RGB565] = {
.convert = yuv420p_to_rgb565
},
[PIX_FMT_BGR24] = {
.convert = yuv420p_to_bgr24
},
[PIX_FMT_RGB24] = {
.convert = yuv420p_to_rgb24
},
[PIX_FMT_RGBA32] = {
.convert = yuv420p_to_rgba32
},
},
[PIX_FMT_YUV422P] = {
[PIX_FMT_RGB555] = {
.convert = yuv422p_to_rgb555
},
[PIX_FMT_RGB565] = {
.convert = yuv422p_to_rgb565
},
[PIX_FMT_BGR24] = {
.convert = yuv422p_to_bgr24
},
[PIX_FMT_RGB24] = {
.convert = yuv422p_to_rgb24
},
[PIX_FMT_RGBA32] = {
.convert = yuv422p_to_rgba32
},
},
[PIX_FMT_YUV422] = {
[PIX_FMT_YUV420P] = {
.convert = yuv422_to_yuv420p,
},
},
[PIX_FMT_RGB24] = {
[PIX_FMT_YUV420P] = {
.convert = rgb24_to_yuv420p
},
[PIX_FMT_RGB565] = {
.convert = rgb24_to_rgb565
},
[PIX_FMT_RGB555] = {
.convert = rgb24_to_rgb555
},
[PIX_FMT_GRAY8] = {
.convert = rgb24_to_gray
},
[PIX_FMT_PAL8] = {
.convert = rgb24_to_pal8
},
},
[PIX_FMT_RGBA32] = {
[PIX_FMT_YUV420P] = {
.convert = rgba32_to_yuv420p
},
[PIX_FMT_GRAY8] = {
.convert = rgba32_to_gray
},
},
[PIX_FMT_BGR24] = {
[PIX_FMT_YUV420P] = {
.convert = bgr24_to_yuv420p
},
[PIX_FMT_GRAY8] = {
.convert = bgr24_to_gray
},
},
[PIX_FMT_RGB555] = {
[PIX_FMT_YUV420P] = {
.convert = rgb555_to_yuv420p
},
[PIX_FMT_GRAY8] = {
.convert = rgb555_to_gray
},
},
[PIX_FMT_RGB565] = {
[PIX_FMT_YUV420P] = {
.convert = rgb565_to_yuv420p
},
[PIX_FMT_GRAY8] = {
.convert = rgb565_to_gray
},
},
[PIX_FMT_GRAY8] = {
[PIX_FMT_RGB555] = {
.convert = gray_to_rgb555
},
[PIX_FMT_RGB565] = {
.convert = gray_to_rgb565
},
[PIX_FMT_RGB24] = {
.convert = gray_to_rgb24
},
[PIX_FMT_BGR24] = {
.convert = gray_to_bgr24
},
[PIX_FMT_RGBA32] = {
.convert = gray_to_rgba32
},
[PIX_FMT_MONOWHITE] = {
.convert = gray_to_monowhite
},
[PIX_FMT_MONOBLACK] = {
.convert = gray_to_monoblack
},
},
[PIX_FMT_MONOWHITE] = {
[PIX_FMT_GRAY8] = {
.convert = monowhite_to_gray
},
},
[PIX_FMT_MONOBLACK] = {
[PIX_FMT_GRAY8] = {
.convert = monoblack_to_gray
},
},
[PIX_FMT_PAL8] = {
[PIX_FMT_RGB555] = {
.convert = pal8_to_rgb555
},
[PIX_FMT_RGB565] = {
.convert = pal8_to_rgb565
},
[PIX_FMT_BGR24] = {
.convert = pal8_to_bgr24
},
[PIX_FMT_RGB24] = {
.convert = pal8_to_rgb24
},
[PIX_FMT_RGBA32] = {
.convert = pal8_to_rgba32
},
},
};
static int avpicture_alloc(AVPicture *picture,
int pix_fmt, int width, int height)
{
unsigned int size;
void *ptr;
size = avpicture_get_size(pix_fmt, width, height);
if (size < 0)
goto fail;
ptr = av_malloc(size);
if (!ptr)
goto fail;
avpicture_fill(picture, ptr, pix_fmt, width, height);
return 0;
fail:
memset(picture, 0, sizeof(AVPicture));
return -1;
}
static void avpicture_free(AVPicture *picture)
{
av_free(picture->data[0]);
}
/* XXX: always use linesize. Return -1 if not supported */
int img_convert(AVPicture *dst, int dst_pix_fmt,
AVPicture *src, int src_pix_fmt,
int src_width, int src_height)
{
int i, ret, dst_width, dst_height, int_pix_fmt;
PixFmtInfo *src_pix, *dst_pix;
ConvertEntry *ce;
AVPicture tmp1, *tmp = &tmp1;
if (src_pix_fmt < 0 || src_pix_fmt >= PIX_FMT_NB ||
dst_pix_fmt < 0 || dst_pix_fmt >= PIX_FMT_NB)
return -1;
if (src_width <= 0 || src_height <= 0)
return 0;
dst_width = src_width;
dst_height = src_height;
dst_pix = &pix_fmt_info[dst_pix_fmt];
src_pix = &pix_fmt_info[src_pix_fmt];
if (src_pix_fmt == dst_pix_fmt) {
/* XXX: incorrect */
/* same format: just copy */
for(i = 0; i < dst_pix->nb_components; i++) {
int w, h;
w = dst_width;
h = dst_height;
if (dst_pix->is_yuv && (i == 1 || i == 2)) {
w >>= dst_pix->x_chroma_shift;
h >>= dst_pix->y_chroma_shift;
}
img_copy(dst->data[i], dst->linesize[i],
src->data[i], src->linesize[i],
w, h);
}
return 0;
}
ce = &convert_table[src_pix_fmt][dst_pix_fmt];
if (ce->convert) {
/* specific convertion routine */
ce->convert(dst, src, dst_width, dst_height);
return 0;
}
/* gray to YUV */
if (dst_pix->is_yuv && src_pix_fmt == PIX_FMT_GRAY8) {
int w, h, y;
uint8_t *d;
img_copy(dst->data[0], dst->linesize[0],
src->data[0], src->linesize[0],
dst_width, dst_height);
/* fill U and V with 128 */
w = dst_width;
h = dst_height;
w >>= dst_pix->x_chroma_shift;
h >>= dst_pix->y_chroma_shift;
for(i = 1; i <= 2; i++) {
d = dst->data[i];
for(y = 0; y< h; y++) {
memset(d, 128, w);
d += dst->linesize[i];
}
}
return 0;
}
/* YUV to gray */
if (src_pix->is_yuv && dst_pix_fmt == PIX_FMT_GRAY8) {
img_copy(dst->data[0], dst->linesize[0],
src->data[0], src->linesize[0],
dst_width, dst_height);
return 0;
}
/* YUV to YUV */
if (dst_pix->is_yuv && src_pix->is_yuv) {
int x_shift, y_shift, w, h;
void (*resize_func)(uint8_t *dst, int dst_wrap,
uint8_t *src, int src_wrap,
int width, int height);
/* compute chroma size of the smallest dimensions */
w = dst_width;
h = dst_height;
if (dst_pix->x_chroma_shift >= src_pix->x_chroma_shift)
w >>= dst_pix->x_chroma_shift;
else
w >>= src_pix->x_chroma_shift;
if (dst_pix->y_chroma_shift >= src_pix->y_chroma_shift)
h >>= dst_pix->y_chroma_shift;
else
h >>= src_pix->y_chroma_shift;
x_shift = (dst_pix->x_chroma_shift - src_pix->x_chroma_shift);
y_shift = (dst_pix->y_chroma_shift - src_pix->y_chroma_shift);
if (x_shift == 0 && y_shift == 0) {
resize_func = img_copy; /* should never happen */
} else if (x_shift == 0 && y_shift == 1) {
resize_func = shrink2;
} else if (x_shift == 1 && y_shift == 1) {
resize_func = shrink22;
} else if (x_shift == -1 && y_shift == -1) {
resize_func = grow22;
} else if (x_shift == -1 && y_shift == 1) {
resize_func = conv411;
} else {
/* currently not handled */
return -1;
}
img_copy(dst->data[0], dst->linesize[0],
src->data[0], src->linesize[0],
dst_width, dst_height);
for(i = 1;i <= 2; i++)
resize_func(dst->data[i], dst->linesize[i],
src->data[i], src->linesize[i],
dst_width>>dst_pix->x_chroma_shift, dst_height>>dst_pix->y_chroma_shift);
return 0;
}
/* try to use an intermediate format */
if (src_pix_fmt == PIX_FMT_MONOWHITE ||
src_pix_fmt == PIX_FMT_MONOBLACK ||
dst_pix_fmt == PIX_FMT_MONOWHITE ||
dst_pix_fmt == PIX_FMT_MONOBLACK) {
int_pix_fmt = PIX_FMT_GRAY8;
} else {
int_pix_fmt = PIX_FMT_RGB24;
}
if (avpicture_alloc(tmp, int_pix_fmt, dst_width, dst_height) < 0)
return -1;
ret = -1;
if (img_convert(tmp, int_pix_fmt,
src, src_pix_fmt, src_width, src_height) < 0)
goto fail1;
if (img_convert(dst, dst_pix_fmt,
tmp, int_pix_fmt, dst_width, dst_height) < 0)
goto fail1;
ret = 0;
fail1:
avpicture_free(tmp);
return ret;
}
#ifdef HAVE_MMX
#define DEINT_INPLACE_LINE_LUM \
movd_m2r(lum_m4[0],mm0);\
movd_m2r(lum_m3[0],mm1);\
movd_m2r(lum_m2[0],mm2);\
movd_m2r(lum_m1[0],mm3);\
movd_m2r(lum[0],mm4);\
punpcklbw_r2r(mm7,mm0);\
movd_r2m(mm2,lum_m4[0]);\
punpcklbw_r2r(mm7,mm1);\
punpcklbw_r2r(mm7,mm2);\
punpcklbw_r2r(mm7,mm3);\
punpcklbw_r2r(mm7,mm4);\
paddw_r2r(mm3,mm1);\
psllw_i2r(1,mm2);\
paddw_r2r(mm4,mm0);\
psllw_i2r(2,mm1);\
paddw_r2r(mm6,mm2);\
paddw_r2r(mm2,mm1);\
psubusw_r2r(mm0,mm1);\
psrlw_i2r(3,mm1);\
packuswb_r2r(mm7,mm1);\
movd_r2m(mm1,lum_m2[0]);
#define DEINT_LINE_LUM \
movd_m2r(lum_m4[0],mm0);\
movd_m2r(lum_m3[0],mm1);\
movd_m2r(lum_m2[0],mm2);\
movd_m2r(lum_m1[0],mm3);\
movd_m2r(lum[0],mm4);\
punpcklbw_r2r(mm7,mm0);\
punpcklbw_r2r(mm7,mm1);\
punpcklbw_r2r(mm7,mm2);\
punpcklbw_r2r(mm7,mm3);\
punpcklbw_r2r(mm7,mm4);\
paddw_r2r(mm3,mm1);\
psllw_i2r(1,mm2);\
paddw_r2r(mm4,mm0);\
psllw_i2r(2,mm1);\
paddw_r2r(mm6,mm2);\
paddw_r2r(mm2,mm1);\
psubusw_r2r(mm0,mm1);\
psrlw_i2r(3,mm1);\
packuswb_r2r(mm7,mm1);\
movd_r2m(mm1,dst[0]);
#endif
/* filter parameters: [-1 4 2 4 -1] // 8 */
static void deinterlace_line(uint8_t *dst, uint8_t *lum_m4, uint8_t *lum_m3, uint8_t *lum_m2, uint8_t *lum_m1, uint8_t *lum,
int size)
{
#ifndef HAVE_MMX
uint8_t *cm = cropTbl + MAX_NEG_CROP;
int sum;
for(;size > 0;size--) {
sum = -lum_m4[0];
sum += lum_m3[0] << 2;
sum += lum_m2[0] << 1;
sum += lum_m1[0] << 2;
sum += -lum[0];
dst[0] = cm[(sum + 4) >> 3];
lum_m4++;
lum_m3++;
lum_m2++;
lum_m1++;
lum++;
dst++;
}
#else
{
mmx_t rounder;
rounder.uw[0]=4;
rounder.uw[1]=4;
rounder.uw[2]=4;
rounder.uw[3]=4;
pxor_r2r(mm7,mm7);
movq_m2r(rounder,mm6);
}
for (;size > 3; size-=4) {
DEINT_LINE_LUM
lum_m4+=4;
lum_m3+=4;
lum_m2+=4;
lum_m1+=4;
lum+=4;
dst+=4;
}
#endif
}
static void deinterlace_line_inplace(uint8_t *lum_m4, uint8_t *lum_m3, uint8_t *lum_m2, uint8_t *lum_m1, uint8_t *lum,
int size)
{
#ifndef HAVE_MMX
uint8_t *cm = cropTbl + MAX_NEG_CROP;
int sum;
for(;size > 0;size--) {
sum = -lum_m4[0];
sum += lum_m3[0] << 2;
sum += lum_m2[0] << 1;
lum_m4[0]=lum_m2[0];
sum += lum_m1[0] << 2;
sum += -lum[0];
lum_m2[0] = cm[(sum + 4) >> 3];
lum_m4++;
lum_m3++;
lum_m2++;
lum_m1++;
lum++;
}
#else
{
mmx_t rounder;
rounder.uw[0]=4;
rounder.uw[1]=4;
rounder.uw[2]=4;
rounder.uw[3]=4;
pxor_r2r(mm7,mm7);
movq_m2r(rounder,mm6);
}
for (;size > 3; size-=4) {
DEINT_INPLACE_LINE_LUM
lum_m4+=4;
lum_m3+=4;
lum_m2+=4;
lum_m1+=4;
lum+=4;
}
#endif
}
/* deinterlacing : 2 temporal taps, 3 spatial taps linear filter. The
top field is copied as is, but the bottom field is deinterlaced
against the top field. */
static void deinterlace_bottom_field(uint8_t *dst, int dst_wrap,
uint8_t *src1, int src_wrap,
int width, int height)
{
uint8_t *src_m2, *src_m1, *src_0, *src_p1, *src_p2;
int y;
src_m2 = src1;
src_m1 = src1;
src_0=&src_m1[src_wrap];
src_p1=&src_0[src_wrap];
src_p2=&src_p1[src_wrap];
for(y=0;y<(height-2);y+=2) {
memcpy(dst,src_m1,width);
dst += dst_wrap;
deinterlace_line(dst,src_m2,src_m1,src_0,src_p1,src_p2,width);
src_m2 = src_0;
src_m1 = src_p1;
src_0 = src_p2;
src_p1 += 2*src_wrap;
src_p2 += 2*src_wrap;
dst += dst_wrap;
}
memcpy(dst,src_m1,width);
dst += dst_wrap;
/* do last line */
deinterlace_line(dst,src_m2,src_m1,src_0,src_0,src_0,width);
}
static void deinterlace_bottom_field_inplace(uint8_t *src1, int src_wrap,
int width, int height)
{
uint8_t *src_m1, *src_0, *src_p1, *src_p2;
int y;
uint8_t *buf;
buf = (uint8_t*)av_malloc(width);
src_m1 = src1;
memcpy(buf,src_m1,width);
src_0=&src_m1[src_wrap];
src_p1=&src_0[src_wrap];
src_p2=&src_p1[src_wrap];
for(y=0;y<(height-2);y+=2) {
deinterlace_line_inplace(buf,src_m1,src_0,src_p1,src_p2,width);
src_m1 = src_p1;
src_0 = src_p2;
src_p1 += 2*src_wrap;
src_p2 += 2*src_wrap;
}
/* do last line */
deinterlace_line_inplace(buf,src_m1,src_0,src_0,src_0,width);
av_free(buf);
}
/* deinterlace - if not supported return -1 */
int avpicture_deinterlace(AVPicture *dst, AVPicture *src,
int pix_fmt, int width, int height)
{
int i;
if (pix_fmt != PIX_FMT_YUV420P &&
pix_fmt != PIX_FMT_YUV422P &&
pix_fmt != PIX_FMT_YUV444P)
return -1;
if ((width & 3) != 0 || (height & 3) != 0)
return -1;
for(i=0;i<3;i++) {
if (i == 1) {
switch(pix_fmt) {
case PIX_FMT_YUV420P:
width >>= 1;
height >>= 1;
break;
case PIX_FMT_YUV422P:
width >>= 1;
break;
default:
break;
}
}
if (src == dst) {
deinterlace_bottom_field_inplace(src->data[i], src->linesize[i],
width, height);
} else {
deinterlace_bottom_field(dst->data[i],dst->linesize[i],
src->data[i], src->linesize[i],
width, height);
}
}
#ifdef HAVE_MMX
emms();
#endif
return 0;
}
#undef FIX