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added gray<->RGB functions - fixed rgb<->yuv functions for non RGB24 case 

Originally committed as revision 1483 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Fabrice Bellard 2003-01-20 22:26:19 +00:00
parent f943e1383d
commit 69572401ad
1 changed files with 81 additions and 64 deletions
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145
libavcodec/imgconvert.c
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@ -520,7 +520,7 @@ static void rgb_name ## _to_yuv420p(AVPicture *dst, AVPicture *src, \
cr = dst->data[2]; \
\
wrap = width; \
wrap3 = width * 3; \
wrap3 = width * BPP; \
p = src->data[0]; \
for(y=0;y<height;y+=2) { \
for(x=0;x<width;x+=2) { \
@ -562,12 +562,65 @@ static void rgb_name ## _to_yuv420p(AVPicture *dst, AVPicture *src, \
\
cb++; \
cr++; \
p += -wrap3 + 2 * 3; \
p += -wrap3 + 2 * BPP; \
lum += -wrap + 2; \
} \
p += wrap3; \
lum += wrap; \
} \
} \
\
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; \
} \
}
/* copy bit n to bits 0 ... n - 1 */
@ -757,66 +810,6 @@ static void rgb24_to_rgb555(AVPicture *dst, AVPicture *src,
}
}
static void rgb24_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] - 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;
}
p += src_wrap;
q += dst_wrap;
}
}
static void gray_to_rgb24(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] - 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;
q += 3;
p ++;
}
p += src_wrap;
q += dst_wrap;
}
}
static void mono_to_gray(AVPicture *dst, AVPicture *src,
int width, int height, int xor_mask)
{
@ -994,26 +987,50 @@ static ConvertEntry convert_table[PIX_FMT_NB][PIX_FMT_NB] = {
[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
},
@ -1072,10 +1089,10 @@ int img_convert(AVPicture *dst, int dst_pix_fmt,
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) {