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ffmpeg.wasm-core
Commit 524c6b63 authored by Fabrice Bellard's avatar Fabrice Bellard
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simplified code (need automatic testing) - added primitive new format support. 

Originally committed as revision 1431 to svn://svn.ffmpeg.org/ffmpeg/trunk
parent 9bbffbb1
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Showing with 834 additions and 642 deletions
libavcodec/imgconvert.c
View file @ 524c6b63
/*
* Misc image convertion routines
* Copyright (c) 2001, 2002 Fabrice Bellard.
* 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
......@@ -26,14 +26,123 @@
#ifdef HAVE_MMX
#include "i386/mmx.h"
#endif
typedef struct PixFmtInfo {
const char *name;
UINT8 nb_components; /* number of components in AVPicture array */
UINT8 is_yuv : 1; /* true if YUV instead of RGB color space */
UINT8 is_packed : 1; /* true if multiple components in same word */
UINT8 is_paletted : 1; /* true if paletted */
UINT8 is_alpha : 1; /* true if alpha can be specified */
UINT8 is_gray : 1; /* true if gray or monochrome format */
UINT8 x_chroma_shift; /* X chroma subsampling factor is 2 ^ shift */
UINT8 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,
},
};
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;
}
/* XXX: totally non optimized */
static void yuv422_to_yuv420p(UINT8 *lum, UINT8 *cb, UINT8 *cr,
UINT8 *src, int width, int height)
static void yuv422_to_yuv420p(AVPicture *dst, AVPicture *src,
int width, int height)
{
UINT8 *lum, *cb, *cr;
int x, y;
UINT8 *p = src;
const UINT8 *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];
......@@ -58,342 +167,6 @@ static void yuv422_to_yuv420p(UINT8 *lum, UINT8 *cb, UINT8 *cr,
#define ONE_HALF (1 << (SCALEBITS - 1))
#define FIX(x) ((int) ((x) * (1L<<SCALEBITS) + 0.5))
static void rgb24_to_yuv420p(UINT8 *lum, UINT8 *cb, UINT8 *cr,
UINT8 *src, int width, int height)
{
int wrap, wrap3, x, y;
int r, g, b, r1, g1, b1;
UINT8 *p;
wrap = width;
wrap3 = width * 3;
p = src;
for(y=0;y<height;y+=2) {
for(x=0;x<width;x+=2) {
r = p[0];
g = p[1];
b = p[2];
r1 = r;
g1 = g;
b1 = b;
lum[0] = (FIX(0.29900) * r + FIX(0.58700) * g +
FIX(0.11400) * b + ONE_HALF) >> SCALEBITS;
r = p[3];
g = p[4];
b = p[5];
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;
r = p[0];
g = p[1];
b = p[2];
r1 += r;
g1 += g;
b1 += b;
lum[0] = (FIX(0.29900) * r + FIX(0.58700) * g +
FIX(0.11400) * b + ONE_HALF) >> SCALEBITS;
r = p[3];
g = p[4];
b = p[5];
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 * 3;
lum += -wrap + 2;
}
p += wrap3;
lum += wrap;
}
}
static void rgba32_to_yuv420p(UINT8 *lum, UINT8 *cb, UINT8 *cr,
UINT8 *src, int width, int height)
{
int wrap, wrap4, x, y;
int r, g, b, r1, g1, b1;
UINT8 *p;
wrap = width;
wrap4 = width * 4;
p = src;
for(y=0;y<height;y+=2) {
for(x=0;x<width;x+=2) {
r = p[0];
g = p[1];
b = p[2];
r1 = r;
g1 = g;
b1 = b;
lum[0] = (FIX(0.29900) * r + FIX(0.58700) * g +
FIX(0.11400) * b + ONE_HALF) >> SCALEBITS;
r = p[4];
g = p[5];
b = p[6];
r1 += r;
g1 += g;
b1 += b;
lum[1] = (FIX(0.29900) * r + FIX(0.58700) * g +
FIX(0.11400) * b + ONE_HALF) >> SCALEBITS;
p += wrap4;
lum += wrap;
r = p[0];
g = p[1];
b = p[2];
r1 += r;
g1 += g;
b1 += b;
lum[0] = (FIX(0.29900) * r + FIX(0.58700) * g +
FIX(0.11400) * b + ONE_HALF) >> SCALEBITS;
r = p[4];
g = p[5];
b = p[6];
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 += -wrap4 + 2 * 4;
lum += -wrap + 2;
}
p += wrap4;
lum += wrap;
}
}
#define rgb565_to_yuv420p(lum,cb,cr,src,width,height) rgbmisc_to_yuv420p((lum),(cb),(cr),(src),(width),(height),0x0800,31, 0x0020,63,0x0001,31)
#define rgb555_to_yuv420p(lum,cb,cr,src,width,height) rgbmisc_to_yuv420p((lum),(cb),(cr),(src),(width),(height),0x0400,31, 0x0020,31,0x0001,31)
#define rgb5551_to_yuv420p(lum,cb,cr,src,width,height) rgbmisc_to_yuv420p((lum),(cb),(cr),(src),(width),(height),0x0800,31, 0x0040,31,0x0002,31)
#define bgr565_to_yuv420p(lum,cb,cr,src,width,height) rgbmisc_to_yuv420p((lum),(cb),(cr),(src),(width),(height),0x0001,31, 0x0020,63,0x0800,31)
#define bgr555_to_yuv420p(lum,cb,cr,src,width,height) rgbmisc_to_yuv420p((lum),(cb),(cr),(src),(width),(height),0x0001,31, 0x0020,31,0x0400,31)
#define gbr565_to_yuv420p(lum,cb,cr,src,width,height) rgbmisc_to_yuv420p((lum),(cb),(cr),(src),(width),(height),0x0001,31, 0x0800,31,0x0040,63)
#define gbr555_to_yuv420p(lum,cb,cr,src,width,height) rgbmisc_to_yuv420p((lum),(cb),(cr),(src),(width),(height),0x0001,31, 0x0400,31,0x0020,31)
static void rgbmisc_to_yuv420p
(UINT8 *lum, UINT8 *cb, UINT8 *cr,
UINT8 *src, int width, int height,
UINT16 R_LOWMASK, UINT16 R_MAX,
UINT16 G_LOWMASK, UINT16 G_MAX,
UINT16 B_LOWMASK, UINT16 B_MAX
)
{
int wrap, wrap2, x, y;
int r, g, b, r1, g1, b1;
UINT8 *p;
UINT16 pixel;
wrap = width;
wrap2 = width * 2;
p = src;
for(y=0;y<height;y+=2) {
for(x=0;x<width;x+=2) {
pixel = p[0] | (p[1]<<8);
r = (((pixel/R_LOWMASK) & R_MAX) * (0x100 / (R_MAX+1)));
g = (((pixel/G_LOWMASK) & G_MAX) * (0x100 / (G_MAX+1)));
b = (((pixel/B_LOWMASK) & B_MAX) * (0x100 / (B_MAX+1)));
r1 = r;
g1 = g;
b1 = b;
lum[0] = (FIX(0.29900) * r + FIX(0.58700) * g +
FIX(0.11400) * b + ONE_HALF) >> SCALEBITS;
pixel = p[2] | (p[3]<<8);
r = (((pixel/R_LOWMASK) & R_MAX) * (0x100 / (R_MAX+1)));
g = (((pixel/G_LOWMASK) & G_MAX) * (0x100 / (G_MAX+1)));
b = (((pixel/B_LOWMASK) & B_MAX) * (0x100 / (B_MAX+1)));
r1 += r;
g1 += g;
b1 += b;
lum[1] = (FIX(0.29900) * r + FIX(0.58700) * g +
FIX(0.11400) * b + ONE_HALF) >> SCALEBITS;
p += wrap2;
lum += wrap;
pixel = p[0] | (p[1]<<8);
r = (((pixel/R_LOWMASK) & R_MAX) * (0x100 / (R_MAX+1)));
g = (((pixel/G_LOWMASK) & G_MAX) * (0x100 / (G_MAX+1)));
b = (((pixel/B_LOWMASK) & B_MAX) * (0x100 / (B_MAX+1)));
r1 += r;
g1 += g;
b1 += b;
lum[0] = (FIX(0.29900) * r + FIX(0.58700) * g +
FIX(0.11400) * b + ONE_HALF) >> SCALEBITS;
pixel = p[2] | (p[3]<<8);
r = (((pixel/R_LOWMASK) & R_MAX) * (0x100 / (R_MAX+1)));
g = (((pixel/G_LOWMASK) & G_MAX) * (0x100 / (G_MAX+1)));
b = (((pixel/B_LOWMASK) & B_MAX) * (0x100 / (B_MAX+1)));
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 += -wrap2 + 2 * 2;
lum += -wrap + 2;
}
p += wrap2;
lum += wrap;
}
}
static void bgr24_to_yuv420p(UINT8 *lum, UINT8 *cb, UINT8 *cr,
UINT8 *src, int width, int height)
{
int wrap, wrap3, x, y;
int r, g, b, r1, g1, b1;
UINT8 *p;
wrap = width;
wrap3 = width * 3;
p = src;
for(y=0;y<height;y+=2) {
for(x=0;x<width;x+=2) {
b = p[0];
g = p[1];
r = p[2];
r1 = r;
g1 = g;
b1 = b;
lum[0] = (FIX(0.29900) * r + FIX(0.58700) * g +
FIX(0.11400) * b + ONE_HALF) >> SCALEBITS;
b = p[3];
g = p[4];
r = p[5];
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;
b = p[0];
g = p[1];
r = p[2];
r1 += r;
g1 += g;
b1 += b;
lum[0] = (FIX(0.29900) * r + FIX(0.58700) * g +
FIX(0.11400) * b + ONE_HALF) >> SCALEBITS;
b = p[3];
g = p[4];
r = p[5];
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 * 3;
lum += -wrap + 2;
}
p += wrap3;
lum += wrap;
}
}
static void bgra32_to_yuv420p(UINT8 *lum, UINT8 *cb, UINT8 *cr,
UINT8 *src, int width, int height)
{
int wrap, wrap4, x, y;
int r, g, b, r1, g1, b1;
UINT8 *p;
wrap = width;
wrap4 = width * 4;
p = src;
for(y=0;y<height;y+=2) {
for(x=0;x<width;x+=2) {
b = p[0];
g = p[1];
r = p[2];
r1 = r;
g1 = g;
b1 = b;
lum[0] = (FIX(0.29900) * r + FIX(0.58700) * g +
FIX(0.11400) * b + ONE_HALF) >> SCALEBITS;
b = p[4];
g = p[5];
r = p[6];
r1 += r;
g1 += g;
b1 += b;
lum[1] = (FIX(0.29900) * r + FIX(0.58700) * g +
FIX(0.11400) * b + ONE_HALF) >> SCALEBITS;
p += wrap4;
lum += wrap;
b = p[0];
g = p[1];
r = p[2];
r1 += r;
g1 += g;
b1 += b;
lum[0] = (FIX(0.29900) * r + FIX(0.58700) * g +
FIX(0.11400) * b + ONE_HALF) >> SCALEBITS;
b = p[4];
g = p[5];
r = p[6];
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 += -wrap4 + 2 * 4;
lum += -wrap + 2;
}
p += wrap4;
lum += wrap;
}
}
/* XXX: use generic filter ? */
/* 1x2 -> 1x1 */
static void shrink2(UINT8 *dst, int dst_wrap,
......@@ -487,7 +260,7 @@ static void grow22(UINT8 *dst, int dst_wrap,
}
}
/* 1x2 -> 2x1. width and height are given for the source picture */
/* 1x2 -> 2x1 */
static void conv411(UINT8 *dst, int dst_wrap,
UINT8 *src, int src_wrap,
int width, int height)
......@@ -495,7 +268,7 @@ static void conv411(UINT8 *dst, int dst_wrap,
int w, c;
UINT8 *s1, *s2, *d;
for(;height > 0; height -= 2) {
for(;height > 0; height--) {
s1 = src;
s2 = src + src_wrap;
d = dst;
......@@ -531,7 +304,7 @@ static void img_copy(UINT8 *dst, int dst_wrap,
#define C_GU (13954 >> (16 - SCALE_BITS))
#define C_GV (34903 >> (16 - SCALE_BITS))
#define RGBOUT(r, g, b, y1)\
#define YUV_TO_RGB2(r, g, b, y1)\
{\
y = (y1 - 16) * C_Y;\
r = cm[(y + r_add) >> SCALE_BITS];\
......@@ -540,340 +313,759 @@ static void img_copy(UINT8 *dst, int dst_wrap,
}
/* XXX: no chroma interpolating is done */
static void yuv420p_to_bgra32(AVPicture *dst, AVPicture *src,
int width, int height)
#define RGB_FUNCTIONS(rgb_name) \
\
static void yuv420p_to_ ## rgb_name (AVPicture *dst, AVPicture *src, \
int width, int height) \
{ \
UINT8 *y1_ptr, *y2_ptr, *cb_ptr, *cr_ptr, *d, *d1, *d2; \
int w, y, cb, cr, r_add, g_add, b_add, width2; \
UINT8 *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; \
for(;height > 0; height -= 2) { \
d1 = d; \
d2 = d + dst->linesize[0]; \
y2_ptr = y1_ptr + src->linesize[0]; \
for(w = width2; w > 0; 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 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++; \
} \
d += 2 * dst->linesize[0]; \
y1_ptr += 2 * src->linesize[0] - width; \
cb_ptr += src->linesize[1] - width2; \
cr_ptr += src->linesize[2] - width2; \
} \
} \
\
/* XXX: no chroma interpolating is done */ \
static void yuv422p_to_ ## rgb_name (AVPicture *dst, AVPicture *src, \
int width, int height) \
{ \
UINT8 *y1_ptr, *cb_ptr, *cr_ptr, *d, *d1; \
int w, y, cb, cr, r_add, g_add, b_add, width2; \
UINT8 *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; \
for(;height > 0; height --) { \
d1 = d; \
for(w = width2; w > 0; 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(d, r, g, b); \
\
YUV_TO_RGB2(r, g, b, y1_ptr[1]); \
RGB_OUT(d + BPP, r, g, b); \
\
d += 2 * BPP; \
\
y1_ptr += 2; \
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 *lum, *cb, *cr; \
const UINT8 *p; \
\
lum = dst->data[0]; \
cb = dst->data[1]; \
cr = dst->data[2]; \
\
wrap = width; \
wrap3 = width * 3; \
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 * 3; \
lum += -wrap + 2; \
} \
p += wrap3; \
lum += wrap; \
} \
}
/* copy bit n to bits 0 ... n - 1 */
static inline unsigned int bitcopy_n(unsigned int a, int n)
{
UINT8 *y1_ptr, *y2_ptr, *cb_ptr, *cr_ptr, *d, *d1, *d2;
int w, y, cb, cr, r_add, g_add, b_add, width2;
UINT8 *cm = cropTbl + MAX_NEG_CROP;
int mask;
mask = (1 << n) - 1;
return (a & (0xff & ~mask)) | ((-((a >> n) & 1)) & mask);
}
d = dst->data[0];
y1_ptr = src->data[0];
cb_ptr = src->data[1];
cr_ptr = src->data[2];
width2 = width >> 1;
for(;height > 0; height -= 2) {
d1 = d;
d2 = d + dst->linesize[0];
y2_ptr = y1_ptr + src->linesize[0];
for(w = width2; w > 0; 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 4 pixels */
RGBOUT(d1[2], d1[1], d1[0], y1_ptr[0]);
RGBOUT(d1[6], d1[5], d1[4], y1_ptr[1]);
RGBOUT(d2[2], d2[1], d2[0], y2_ptr[0]);
RGBOUT(d2[6], d2[5], d2[4], y2_ptr[1]);
d1[3] = d1[7] = d2[3] = d2[7] = 255;
d1 += 8;
d2 += 8;
y1_ptr += 2;
y2_ptr += 2;
cb_ptr++;
cr_ptr++;
/* rgb555 handling */
#define RGB_IN(r, g, b, s)\
{\
unsigned int v = ((UINT16 *)(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 *)(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 = ((UINT16 *)(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 *)(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 = ((UINT32 *)(s))[0];\
r = (v >> 16) & 0xff;\
g = (v >> 8) & 0xff;\
b = v & 0xff;\
}
#define RGB_OUT(d, r, g, b)\
{\
((UINT32 *)(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;
}
d += 2 * dst->linesize[0];
y1_ptr += 2 * src->linesize[0] - width;
cb_ptr += src->linesize[1] - width2;
cr_ptr += src->linesize[2] - width2;
p += src_wrap;
q += dst_wrap;
}
}
/* XXX: no chroma interpolating is done */
static void yuv420p_to_rgba32(AVPicture *dst, AVPicture *src,
int width, int height)
/* NOTE: we also add a dummy alpha bit */
static void rgb24_to_rgb555(AVPicture *dst, AVPicture *src,
int width, int height)
{
UINT8 *y1_ptr, *y2_ptr, *cb_ptr, *cr_ptr, *d, *d1, *d2;
int w, y, cb, cr, r_add, g_add, b_add, width2;
UINT8 *cm = cropTbl + MAX_NEG_CROP;
const unsigned char *p;
unsigned char *q;
int r, g, b, dst_wrap, src_wrap;
int x, y;
d = dst->data[0];
y1_ptr = src->data[0];
cb_ptr = src->data[1];
cr_ptr = src->data[2];
width2 = width >> 1;
for(;height > 0; height -= 2) {
d1 = d;
d2 = d + dst->linesize[0];
y2_ptr = y1_ptr + src->linesize[0];
for(w = width2; w > 0; 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 4 pixels */
RGBOUT(d1[0], d1[1], d1[2], y1_ptr[0]);
RGBOUT(d1[4], d1[5], d1[6], y1_ptr[1]);
RGBOUT(d2[0], d2[1], d2[2], y2_ptr[0]);
RGBOUT(d2[4], d2[5], d2[6], y2_ptr[1]);
d1[3] = d1[7] = d2[3] = d2[7] = 255;
d1 += 8;
d2 += 8;
y1_ptr += 2;
y2_ptr += 2;
cb_ptr++;
cr_ptr++;
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;
}
d += 2 * dst->linesize[0];
y1_ptr += 2 * src->linesize[0] - width;
cb_ptr += src->linesize[1] - width2;
cr_ptr += src->linesize[2] - width2;
p += src_wrap;
q += dst_wrap;
}
}
/* XXX: no chroma interpolating is done */
static void yuv420p_to_rgb24(AVPicture *dst, AVPicture *src,
int width, int height)
static void rgb24_to_gray(AVPicture *dst, AVPicture *src,
int width, int height)
{
UINT8 *y1_ptr, *y2_ptr, *cb_ptr, *cr_ptr, *d, *d1, *d2;
int w, y, cb, cr, r_add, g_add, b_add, width2;
UINT8 *cm = cropTbl + MAX_NEG_CROP;
const unsigned char *p;
unsigned char *q;
int r, g, b, dst_wrap, src_wrap;
int x, y;
d = dst->data[0];
y1_ptr = src->data[0];
cb_ptr = src->data[1];
cr_ptr = src->data[2];
width2 = width >> 1;
for(;height > 0; height -= 2) {
d1 = d;
d2 = d + dst->linesize[0];
y2_ptr = y1_ptr + src->linesize[0];
for(w = width2; w > 0; 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 4 pixels */
RGBOUT(d1[0], d1[1], d1[2], y1_ptr[0]);
RGBOUT(d1[3], d1[4], d1[5], y1_ptr[1]);
RGBOUT(d2[0], d2[1], d2[2], y2_ptr[0]);
RGBOUT(d2[3], d2[4], d2[5], y2_ptr[1]);
d1 += 6;
d2 += 6;
y1_ptr += 2;
y2_ptr += 2;
cb_ptr++;
cr_ptr++;
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] = (FIX(0.29900) * r + FIX(0.58700) * g +
FIX(0.11400) * b + ONE_HALF) >> SCALEBITS;
q++;
p += 3;
}
d += 2 * dst->linesize[0];
y1_ptr += 2 * src->linesize[0] - width;
cb_ptr += src->linesize[1] - width2;
cr_ptr += src->linesize[2] - width2;
p += src_wrap;
q += dst_wrap;
}
}
/* XXX: no chroma interpolating is done */
static void yuv422p_to_rgb24(AVPicture *dst, AVPicture *src,
int width, int height)
static void gray_to_rgb24(AVPicture *dst, AVPicture *src,
int width, int height)
{
UINT8 *y1_ptr, *cb_ptr, *cr_ptr, *d, *d1;
int w, y, cb, cr, r_add, g_add, b_add, width2;
UINT8 *cm = cropTbl + MAX_NEG_CROP;
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;
d = dst->data[0];
y1_ptr = src->data[0];
cb_ptr = src->data[1];
cr_ptr = src->data[2];
width2 = width >> 1;
for(;height > 0; height --) {
d1 = d;
for(w = width2; w > 0; 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));
q = dst->data[0];
dst_wrap = dst->linesize[0] - 3 * width;
for(y=0;y<height;y++) {
for(x=0;x<width;x++) {
r = p[0];
q[0] = r;
q[1] = r;
q[2] = r;
/* output 2 pixels */
RGBOUT(d1[0], d1[1], d1[2], y1_ptr[0]);
RGBOUT(d1[3], d1[4], d1[5], y1_ptr[1]);
d1 += 6;
y1_ptr += 2;
cb_ptr++;
cr_ptr++;
q += 3;
p ++;
}
p += src_wrap;
q += dst_wrap;
}
}
static void monowhite_to_rgb24(AVPicture *dst, AVPicture *src,
int width, int height)
{
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] - 3 * width;
for(y=0;y<height;y++) {
w = width;
while (w >= 8) {
v = *p++ ^ 0xff;
q[0] = q[1] = q[2] = -(v >> 7); q += 3;
q[0] = q[1] = q[2] = -((v >> 6) & 1); q += 3;
q[0] = q[1] = q[2] = -((v >> 5) & 1); q += 3;
q[0] = q[1] = q[2] = -((v >> 4) & 1); q += 3;
q[0] = q[1] = q[2] = -((v >> 3) & 1); q += 3;
q[0] = q[1] = q[2] = -((v >> 2) & 1); q += 3;
q[0] = q[1] = q[2] = -((v >> 1) & 1); q += 3;
q[0] = q[1] = q[2] = -((v >> 0) & 1); q += 3;
w -= 8;
}
if (w > 0) {
v = *p++ ^ 0xff;
do {
q[0] = q[1] = q[2] = -((v >> 7) & 1); q += 3;
v <<= 1;
} while (--w);
}
d += dst->linesize[0];
y1_ptr += src->linesize[0] - width;
cb_ptr += src->linesize[1] - width2;
cr_ptr += src->linesize[2] - width2;
p += src_wrap;
q += dst_wrap;
}
}
static void monoblack_to_rgb24(AVPicture *dst, AVPicture *src,
int width, int height)
{
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] - 3 * width;
for(y=0;y<height;y++) {
w = width;
while (w >= 8) {
v = *p++;
q[0] = q[1] = q[2] = -(v >> 7); q += 3;
q[0] = q[1] = q[2] = -((v >> 6) & 1); q += 3;
q[0] = q[1] = q[2] = -((v >> 5) & 1); q += 3;
q[0] = q[1] = q[2] = -((v >> 4) & 1); q += 3;
q[0] = q[1] = q[2] = -((v >> 3) & 1); q += 3;
q[0] = q[1] = q[2] = -((v >> 2) & 1); q += 3;
q[0] = q[1] = q[2] = -((v >> 1) & 1); q += 3;
q[0] = q[1] = q[2] = -((v >> 0) & 1); q += 3;
w -= 8;
}
if (w > 0) {
v = *p++;
do {
q[0] = q[1] = q[2] = -((v >> 7) & 1); q += 3;
v <<= 1;
} while (--w);
}
p += src_wrap;
q += dst_wrap;
}
}
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_RGBA32] = {
[PIX_FMT_YUV420P] = {
convert: rgba32_to_yuv420p
},
},
[PIX_FMT_BGR24] = {
[PIX_FMT_YUV420P] = {
convert: bgr24_to_yuv420p
},
},
[PIX_FMT_RGB555] = {
[PIX_FMT_YUV420P] = {
convert: rgb555_to_yuv420p
},
},
[PIX_FMT_RGB565] = {
[PIX_FMT_YUV420P] = {
convert: rgb565_to_yuv420p
},
},
[PIX_FMT_GRAY8] = {
[PIX_FMT_RGB24] = {
convert: gray_to_rgb24
},
},
[PIX_FMT_MONOWHITE] = {
[PIX_FMT_RGB24] = {
convert: monowhite_to_rgb24
},
},
[PIX_FMT_MONOBLACK] = {
[PIX_FMT_RGB24] = {
convert: monoblack_to_rgb24
},
},
};
static int avpicture_alloc(AVPicture *picture,
int pix_fmt, int width, int height)
{
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)
{
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 pix_fmt,
int width, int height)
AVPicture *src, int src_pix_fmt,
int src_width, int src_height)
{
int i;
int i, ret, dst_width, dst_height;
PixFmtInfo *src_pix, *dst_pix;
ConvertEntry *ce;
AVPicture tmp1, *tmp = &tmp1;
if (dst_pix_fmt == pix_fmt) {
switch(pix_fmt) {
case PIX_FMT_YUV420P:
for(i=0;i<3;i++) {
if (i == 1) {
width >>= 1;
height >>= 1;
}
img_copy(dst->data[i], dst->linesize[i],
src->data[i], src->linesize[i],
width, height);
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) {
/* 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;
}
break;
default:
return -1;
img_copy(dst->data[i], dst->linesize[i],
src->data[i], src->linesize[i],
w, h);
}
} else if (dst_pix_fmt == PIX_FMT_YUV420P) {
switch(pix_fmt) {
case PIX_FMT_YUV411P:
img_copy(dst->data[0], dst->linesize[0],
src->data[0], src->linesize[0],
width, height);
conv411(dst->data[1], dst->linesize[1],
src->data[1], src->linesize[1],
width / 4, height);
conv411(dst->data[2], dst->linesize[2],
src->data[2], src->linesize[2],
width / 4, height);
break;
case PIX_FMT_YUV410P:
img_copy(dst->data[0], dst->linesize[0],
src->data[0], src->linesize[0],
width, height);
grow22(dst->data[1], dst->linesize[1],
src->data[1], src->linesize[1],
width/2, height/2);
grow22(dst->data[2], dst->linesize[2],
src->data[2], src->linesize[2],
width/2, height/2);
break;
case PIX_FMT_YUV420P:
for(i=0;i<3;i++) {
img_copy(dst->data[i], dst->linesize[i],
src->data[i], src->linesize[i],
width, height);
}
break;
case PIX_FMT_YUV422P:
img_copy(dst->data[0], dst->linesize[0],
src->data[0], src->linesize[0],
width, height);
width >>= 1;
height >>= 1;
for(i=1;i<3;i++) {
shrink2(dst->data[i], dst->linesize[i],
src->data[i], src->linesize[i],
width, height);
}
break;
case PIX_FMT_YUV444P:
img_copy(dst->data[0], dst->linesize[0],
src->data[0], src->linesize[0],
width, height);
width >>= 1;
height >>= 1;
for(i=1;i<3;i++) {
shrink22(dst->data[i], dst->linesize[i],
src->data[i], src->linesize[i],
width, height);
}
break;
case PIX_FMT_YUV422:
yuv422_to_yuv420p(dst->data[0], dst->data[1], dst->data[2],
src->data[0], width, height);
break;
case PIX_FMT_RGB24:
rgb24_to_yuv420p(dst->data[0], dst->data[1], dst->data[2],
src->data[0], width, height);
break;
case PIX_FMT_RGBA32:
rgba32_to_yuv420p(dst->data[0], dst->data[1], dst->data[2],
src->data[0], width, height);
break;
case PIX_FMT_BGR24:
bgr24_to_yuv420p(dst->data[0], dst->data[1], dst->data[2],
src->data[0], width, height);
break;
case PIX_FMT_BGRA32:
bgra32_to_yuv420p(dst->data[0], dst->data[1], dst->data[2],
src->data[0], width, height);
break;
case PIX_FMT_RGB565:
rgb565_to_yuv420p(dst->data[0], dst->data[1], dst->data[2],
src->data[0], width, height);
break;
case PIX_FMT_RGB555:
rgb555_to_yuv420p(dst->data[0], dst->data[1], dst->data[2],
src->data[0], width, height);
break;
/* case PIX_FMT_RGB5551:
rgb5551_to_yuv420p(dst->data[0], dst->data[1], dst->data[2],
src->data[0], width, height);
break;*/
case PIX_FMT_BGR565:
bgr565_to_yuv420p(dst->data[0], dst->data[1], dst->data[2],
src->data[0], width, height);
break;
case PIX_FMT_BGR555:
bgr555_to_yuv420p(dst->data[0], dst->data[1], dst->data[2],
src->data[0], width, height);
break;
/* case PIX_FMT_GBR565:
gbr565_to_yuv420p(dst->data[0], dst->data[1], dst->data[2],
src->data[0], width, height);
break;
case PIX_FMT_GBR555:
gbr555_to_yuv420p(dst->data[0], dst->data[1], dst->data[2],
src->data[0], width, height);
break;*/
default:
return -1;
}
} else if (dst_pix_fmt == PIX_FMT_RGB24) {
switch(pix_fmt) {
case PIX_FMT_YUV420P:
yuv420p_to_rgb24(dst, src, width, height);
break;
case PIX_FMT_YUV422P:
yuv422p_to_rgb24(dst, src, width, height);
break;
default:
return -1;
}
} else if (dst_pix_fmt == PIX_FMT_RGBA32) {
switch(pix_fmt) {
case PIX_FMT_YUV420P:
yuv420p_to_rgba32(dst, src, width, height);
break;
default:
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;
}
/* if both format are not YUV, try to use RGB24 as common
format */
if (!dst_pix->is_yuv && !src_pix->is_yuv) {
if (avpicture_alloc(tmp, PIX_FMT_RGB24, dst_width, dst_height) < 0)
return -1;
ret = -1;
if (img_convert(tmp, PIX_FMT_RGB24,
src, src_pix_fmt, src_width, src_height) < 0)
goto fail1;
if (img_convert(dst, dst_pix_fmt,
tmp, PIX_FMT_RGB24, dst_width, dst_height) < 0)
goto fail1;
ret = 0;
fail1:
avpicture_free(tmp);
return ret;
}
/* 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, 0);
d += dst->linesize[i];
}
}
} else if (dst_pix_fmt == PIX_FMT_BGRA32) {
switch(pix_fmt) {
case PIX_FMT_YUV420P:
yuv420p_to_bgra32(dst, src, width, height);
break;
default:
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 *dst, int dst_wrap,
UINT8 *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;
}
} else {
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[1], dst->linesize[1],
src->data[1], src->linesize[1],
w, h);
}
return 0;
/* cannot convert yet */
return -1;
}
......
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