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DEFINITIONS
This source file includes following definitions.
- yuv444p_to_rgb24
- yuvj444p_to_rgb24
- rgb24_to_yuv444p
- rgb24_to_yuvj420p
- rgb24_to_yuvj444p
/*
* templates for image conversion routines
* Copyright (c) 2001, 2002, 2003 Fabrice Bellard
*
* This file is part of FFmpeg.
*
* FFmpeg 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 2.1 of the License, or (at your option) any later version.
*
* FFmpeg 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 FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef RGB_OUT
#define RGB_OUT(d, r, g, b) RGBA_OUT(d, r, g, b, 0xff)
#endif
static void glue(yuv420p_to_, RGB_NAME)(AVPicture *dst, const AVPicture *src,
int width, int height)
{
const uint8_t *y1_ptr, *y2_ptr, *cb_ptr, *cr_ptr;
uint8_t *d, *d1, *d2;
int w, y, cb, cr, r_add, g_add, b_add, width2;
uint8_t *cm = ff_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) {
YUV_TO_RGB1_CCIR(cb_ptr[0], cr_ptr[0]);
/* output 4 pixels */
YUV_TO_RGB2_CCIR(r, g, b, y1_ptr[0]);
RGB_OUT(d1, r, g, b);
YUV_TO_RGB2_CCIR(r, g, b, y1_ptr[1]);
RGB_OUT(d1 + BPP, r, g, b);
YUV_TO_RGB2_CCIR(r, g, b, y2_ptr[0]);
RGB_OUT(d2, r, g, b);
YUV_TO_RGB2_CCIR(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) {
YUV_TO_RGB1_CCIR(cb_ptr[0], cr_ptr[0]);
YUV_TO_RGB2_CCIR(r, g, b, y1_ptr[0]);
RGB_OUT(d1, r, g, b);
YUV_TO_RGB2_CCIR(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) {
YUV_TO_RGB1_CCIR(cb_ptr[0], cr_ptr[0]);
/* output 2 pixels */
YUV_TO_RGB2_CCIR(r, g, b, y1_ptr[0]);
RGB_OUT(d1, r, g, b);
YUV_TO_RGB2_CCIR(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) {
YUV_TO_RGB1_CCIR(cb_ptr[0], cr_ptr[0]);
/* output 2 pixels */
YUV_TO_RGB2_CCIR(r, g, b, y1_ptr[0]);
RGB_OUT(d1, r, g, b);
d1 += BPP;
y1_ptr++;
cb_ptr++;
cr_ptr++;
}
}
}
static void glue(yuvj420p_to_, RGB_NAME)(AVPicture *dst, const AVPicture *src,
int width, int height)
{
const uint8_t *y1_ptr, *y2_ptr, *cb_ptr, *cr_ptr;
uint8_t *d, *d1, *d2;
int w, y, cb, cr, r_add, g_add, b_add, width2;
uint8_t *cm = ff_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) {
YUV_TO_RGB1(cb_ptr[0], cr_ptr[0]);
/* 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) {
YUV_TO_RGB1(cb_ptr[0], cr_ptr[0]);
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) {
YUV_TO_RGB1(cb_ptr[0], cr_ptr[0]);
/* 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) {
YUV_TO_RGB1(cb_ptr[0], cr_ptr[0]);
/* 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++;
}
}
}
static void glue(RGB_NAME, _to_yuv420p)(AVPicture *dst, const AVPicture *src,
int width, int height)
{
int wrap, wrap3, width2;
int r, g, b, r1, g1, b1, w;
uint8_t *lum, *cb, *cr;
const uint8_t *p;
lum = dst->data[0];
cb = dst->data[1];
cr = dst->data[2];
width2 = (width + 1) >> 1;
wrap = dst->linesize[0];
wrap3 = src->linesize[0];
p = src->data[0];
for(;height>=2;height -= 2) {
for(w = width; w >= 2; w -= 2) {
RGB_IN(r, g, b, p);
r1 = r;
g1 = g;
b1 = b;
lum[0] = RGB_TO_Y_CCIR(r, g, b);
RGB_IN(r, g, b, p + BPP);
r1 += r;
g1 += g;
b1 += b;
lum[1] = RGB_TO_Y_CCIR(r, g, b);
p += wrap3;
lum += wrap;
RGB_IN(r, g, b, p);
r1 += r;
g1 += g;
b1 += b;
lum[0] = RGB_TO_Y_CCIR(r, g, b);
RGB_IN(r, g, b, p + BPP);
r1 += r;
g1 += g;
b1 += b;
lum[1] = RGB_TO_Y_CCIR(r, g, b);
cb[0] = RGB_TO_U_CCIR(r1, g1, b1, 2);
cr[0] = RGB_TO_V_CCIR(r1, g1, b1, 2);
cb++;
cr++;
p += -wrap3 + 2 * BPP;
lum += -wrap + 2;
}
if (w) {
RGB_IN(r, g, b, p);
r1 = r;
g1 = g;
b1 = b;
lum[0] = RGB_TO_Y_CCIR(r, g, b);
p += wrap3;
lum += wrap;
RGB_IN(r, g, b, p);
r1 += r;
g1 += g;
b1 += b;
lum[0] = RGB_TO_Y_CCIR(r, g, b);
cb[0] = RGB_TO_U_CCIR(r1, g1, b1, 1);
cr[0] = RGB_TO_V_CCIR(r1, g1, b1, 1);
cb++;
cr++;
p += -wrap3 + BPP;
lum += -wrap + 1;
}
p += wrap3 + (wrap3 - width * BPP);
lum += wrap + (wrap - width);
cb += dst->linesize[1] - width2;
cr += dst->linesize[2] - width2;
}
/* handle odd height */
if (height) {
for(w = width; w >= 2; w -= 2) {
RGB_IN(r, g, b, p);
r1 = r;
g1 = g;
b1 = b;
lum[0] = RGB_TO_Y_CCIR(r, g, b);
RGB_IN(r, g, b, p + BPP);
r1 += r;
g1 += g;
b1 += b;
lum[1] = RGB_TO_Y_CCIR(r, g, b);
cb[0] = RGB_TO_U_CCIR(r1, g1, b1, 1);
cr[0] = RGB_TO_V_CCIR(r1, g1, b1, 1);
cb++;
cr++;
p += 2 * BPP;
lum += 2;
}
if (w) {
RGB_IN(r, g, b, p);
lum[0] = RGB_TO_Y_CCIR(r, g, b);
cb[0] = RGB_TO_U_CCIR(r, g, b, 0);
cr[0] = RGB_TO_V_CCIR(r, g, b, 0);
}
}
}
static void glue(RGB_NAME, _to_gray)(AVPicture *dst, const 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] = RGB_TO_Y(r, g, b);
q++;
p += BPP;
}
p += src_wrap;
q += dst_wrap;
}
}
static void glue(gray_to_, RGB_NAME)(AVPicture *dst, const 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 glue(pal8_to_, RGB_NAME)(AVPicture *dst, const 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;
#ifdef RGBA_OUT
{
int a;
a = (v >> 24) & 0xff;
RGBA_OUT(q, r, g, b, a);
}
#else
RGB_OUT(q, r, g, b);
#endif
q += BPP;
p ++;
}
p += src_wrap;
q += dst_wrap;
}
}
// RGB24 has optimized routines
#if !defined(FMT_RGB32) && !defined(FMT_RGB24)
/* alpha support */
static void glue(rgb32_to_, RGB_NAME)(AVPicture *dst, const AVPicture *src,
int width, int height)
{
const uint8_t *s;
uint8_t *d;
int src_wrap, dst_wrap, j, y;
unsigned int v, r, g, b;
#ifdef RGBA_OUT
unsigned int a;
#endif
s = src->data[0];
src_wrap = src->linesize[0] - width * 4;
d = dst->data[0];
dst_wrap = dst->linesize[0] - width * BPP;
for(y=0;y<height;y++) {
for(j = 0;j < width; j++) {
v = ((const uint32_t *)(s))[0];
r = (v >> 16) & 0xff;
g = (v >> 8) & 0xff;
b = v & 0xff;
#ifdef RGBA_OUT
a = (v >> 24) & 0xff;
RGBA_OUT(d, r, g, b, a);
#else
RGB_OUT(d, r, g, b);
#endif
s += 4;
d += BPP;
}
s += src_wrap;
d += dst_wrap;
}
}
static void glue(RGB_NAME, _to_rgb32)(AVPicture *dst, const AVPicture *src,
int width, int height)
{
const uint8_t *s;
uint8_t *d;
int src_wrap, dst_wrap, j, y;
unsigned int r, g, b;
#ifdef RGBA_IN
unsigned int a;
#endif
s = src->data[0];
src_wrap = src->linesize[0] - width * BPP;
d = dst->data[0];
dst_wrap = dst->linesize[0] - width * 4;
for(y=0;y<height;y++) {
for(j = 0;j < width; j++) {
#ifdef RGBA_IN
RGBA_IN(r, g, b, a, s);
((uint32_t *)(d))[0] = (a << 24) | (r << 16) | (g << 8) | b;
#else
RGB_IN(r, g, b, s);
((uint32_t *)(d))[0] = (0xff << 24) | (r << 16) | (g << 8) | b;
#endif
d += 4;
s += BPP;
}
s += src_wrap;
d += dst_wrap;
}
}
#endif /* !defined(FMT_RGB32) */
#ifndef FMT_RGB24
static void glue(rgb24_to_, RGB_NAME)(AVPicture *dst, const AVPicture *src,
int width, int height)
{
const uint8_t *s;
uint8_t *d;
int src_wrap, dst_wrap, j, y;
unsigned int r, g, b;
s = src->data[0];
src_wrap = src->linesize[0] - width * 3;
d = dst->data[0];
dst_wrap = dst->linesize[0] - width * BPP;
for(y=0;y<height;y++) {
for(j = 0;j < width; j++) {
r = s[0];
g = s[1];
b = s[2];
RGB_OUT(d, r, g, b);
s += 3;
d += BPP;
}
s += src_wrap;
d += dst_wrap;
}
}
static void glue(RGB_NAME, _to_rgb24)(AVPicture *dst, const AVPicture *src,
int width, int height)
{
const uint8_t *s;
uint8_t *d;
int src_wrap, dst_wrap, j, y;
unsigned int r, g , b;
s = src->data[0];
src_wrap = src->linesize[0] - width * BPP;
d = dst->data[0];
dst_wrap = dst->linesize[0] - width * 3;
for(y=0;y<height;y++) {
for(j = 0;j < width; j++) {
RGB_IN(r, g, b, s)
d[0] = r;
d[1] = g;
d[2] = b;
d += 3;
s += BPP;
}
s += src_wrap;
d += dst_wrap;
}
}
#endif /* !FMT_RGB24 */
#ifdef FMT_RGB24
static void yuv444p_to_rgb24(AVPicture *dst, const AVPicture *src,
int width, int height)
{
const uint8_t *y1_ptr, *cb_ptr, *cr_ptr;
uint8_t *d, *d1;
int w, y, cb, cr, r_add, g_add, b_add;
uint8_t *cm = ff_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];
for(;height > 0; height --) {
d1 = d;
for(w = width; w > 0; w--) {
YUV_TO_RGB1_CCIR(cb_ptr[0], cr_ptr[0]);
YUV_TO_RGB2_CCIR(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] - width;
cr_ptr += src->linesize[2] - width;
}
}
static void yuvj444p_to_rgb24(AVPicture *dst, const AVPicture *src,
int width, int height)
{
const uint8_t *y1_ptr, *cb_ptr, *cr_ptr;
uint8_t *d, *d1;
int w, y, cb, cr, r_add, g_add, b_add;
uint8_t *cm = ff_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];
for(;height > 0; height --) {
d1 = d;
for(w = width; w > 0; w--) {
YUV_TO_RGB1(cb_ptr[0], cr_ptr[0]);
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] - width;
cr_ptr += src->linesize[2] - width;
}
}
static void rgb24_to_yuv444p(AVPicture *dst, const AVPicture *src,
int width, int height)
{
int src_wrap, x, y;
int r, g, b;
uint8_t *lum, *cb, *cr;
const uint8_t *p;
lum = dst->data[0];
cb = dst->data[1];
cr = dst->data[2];
src_wrap = src->linesize[0] - width * BPP;
p = src->data[0];
for(y=0;y<height;y++) {
for(x=0;x<width;x++) {
RGB_IN(r, g, b, p);
lum[0] = RGB_TO_Y_CCIR(r, g, b);
cb[0] = RGB_TO_U_CCIR(r, g, b, 0);
cr[0] = RGB_TO_V_CCIR(r, g, b, 0);
p += BPP;
cb++;
cr++;
lum++;
}
p += src_wrap;
lum += dst->linesize[0] - width;
cb += dst->linesize[1] - width;
cr += dst->linesize[2] - width;
}
}
static void rgb24_to_yuvj420p(AVPicture *dst, const AVPicture *src,
int width, int height)
{
int wrap, wrap3, width2;
int r, g, b, r1, g1, b1, w;
uint8_t *lum, *cb, *cr;
const uint8_t *p;
lum = dst->data[0];
cb = dst->data[1];
cr = dst->data[2];
width2 = (width + 1) >> 1;
wrap = dst->linesize[0];
wrap3 = src->linesize[0];
p = src->data[0];
for(;height>=2;height -= 2) {
for(w = width; w >= 2; w -= 2) {
RGB_IN(r, g, b, p);
r1 = r;
g1 = g;
b1 = b;
lum[0] = RGB_TO_Y(r, g, b);
RGB_IN(r, g, b, p + BPP);
r1 += r;
g1 += g;
b1 += b;
lum[1] = RGB_TO_Y(r, g, b);
p += wrap3;
lum += wrap;
RGB_IN(r, g, b, p);
r1 += r;
g1 += g;
b1 += b;
lum[0] = RGB_TO_Y(r, g, b);
RGB_IN(r, g, b, p + BPP);
r1 += r;
g1 += g;
b1 += b;
lum[1] = RGB_TO_Y(r, g, b);
cb[0] = RGB_TO_U(r1, g1, b1, 2);
cr[0] = RGB_TO_V(r1, g1, b1, 2);
cb++;
cr++;
p += -wrap3 + 2 * BPP;
lum += -wrap + 2;
}
if (w) {
RGB_IN(r, g, b, p);
r1 = r;
g1 = g;
b1 = b;
lum[0] = RGB_TO_Y(r, g, b);
p += wrap3;
lum += wrap;
RGB_IN(r, g, b, p);
r1 += r;
g1 += g;
b1 += b;
lum[0] = RGB_TO_Y(r, g, b);
cb[0] = RGB_TO_U(r1, g1, b1, 1);
cr[0] = RGB_TO_V(r1, g1, b1, 1);
cb++;
cr++;
p += -wrap3 + BPP;
lum += -wrap + 1;
}
p += wrap3 + (wrap3 - width * BPP);
lum += wrap + (wrap - width);
cb += dst->linesize[1] - width2;
cr += dst->linesize[2] - width2;
}
/* handle odd height */
if (height) {
for(w = width; w >= 2; w -= 2) {
RGB_IN(r, g, b, p);
r1 = r;
g1 = g;
b1 = b;
lum[0] = RGB_TO_Y(r, g, b);
RGB_IN(r, g, b, p + BPP);
r1 += r;
g1 += g;
b1 += b;
lum[1] = RGB_TO_Y(r, g, b);
cb[0] = RGB_TO_U(r1, g1, b1, 1);
cr[0] = RGB_TO_V(r1, g1, b1, 1);
cb++;
cr++;
p += 2 * BPP;
lum += 2;
}
if (w) {
RGB_IN(r, g, b, p);
lum[0] = RGB_TO_Y(r, g, b);
cb[0] = RGB_TO_U(r, g, b, 0);
cr[0] = RGB_TO_V(r, g, b, 0);
}
}
}
static void rgb24_to_yuvj444p(AVPicture *dst, const AVPicture *src,
int width, int height)
{
int src_wrap, x, y;
int r, g, b;
uint8_t *lum, *cb, *cr;
const uint8_t *p;
lum = dst->data[0];
cb = dst->data[1];
cr = dst->data[2];
src_wrap = src->linesize[0] - width * BPP;
p = src->data[0];
for(y=0;y<height;y++) {
for(x=0;x<width;x++) {
RGB_IN(r, g, b, p);
lum[0] = RGB_TO_Y(r, g, b);
cb[0] = RGB_TO_U(r, g, b, 0);
cr[0] = RGB_TO_V(r, g, b, 0);
p += BPP;
cb++;
cr++;
lum++;
}
p += src_wrap;
lum += dst->linesize[0] - width;
cb += dst->linesize[1] - width;
cr += dst->linesize[2] - width;
}
}
#endif /* FMT_RGB24 */
#if defined(FMT_RGB24) || defined(FMT_RGB32)
static void glue(RGB_NAME, _to_pal8)(AVPicture *dst, const AVPicture *src,
int width, int height)
{
const unsigned char *p;
unsigned char *q;
int dst_wrap, src_wrap;
int x, y, has_alpha;
unsigned int r, g, b;
p = src->data[0];
src_wrap = src->linesize[0] - BPP * width;
q = dst->data[0];
dst_wrap = dst->linesize[0] - width;
has_alpha = 0;
for(y=0;y<height;y++) {
for(x=0;x<width;x++) {
#ifdef RGBA_IN
{
unsigned int a;
RGBA_IN(r, g, b, a, p);
/* crude approximation for alpha ! */
if (a < 0x80) {
has_alpha = 1;
q[0] = TRANSP_INDEX;
} else {
q[0] = gif_clut_index(r, g, b);
}
}
#else
RGB_IN(r, g, b, p);
q[0] = gif_clut_index(r, g, b);
#endif
q++;
p += BPP;
}
p += src_wrap;
q += dst_wrap;
}
build_rgb_palette(dst->data[1], has_alpha);
}
#endif /* defined(FMT_RGB24) || defined(FMT_RGB32) */
#ifdef RGBA_IN
static int glue(get_alpha_info_, RGB_NAME)(const AVPicture *src,
int width, int height)
{
const unsigned char *p;
int src_wrap, ret, x, y;
unsigned int r, g, b, a;
p = src->data[0];
src_wrap = src->linesize[0] - BPP * width;
ret = 0;
for(y=0;y<height;y++) {
for(x=0;x<width;x++) {
RGBA_IN(r, g, b, a, p);
if (a == 0x00) {
ret |= FF_ALPHA_TRANSP;
} else if (a != 0xff) {
ret |= FF_ALPHA_SEMI_TRANSP;
}
p += BPP;
}
p += src_wrap;
}
return ret;
}
#endif /* RGBA_IN */
#undef RGB_IN
#undef RGBA_IN
#undef RGB_OUT
#undef RGBA_OUT
#undef BPP
#undef RGB_NAME
#undef FMT_RGB24
#undef FMT_RGB32