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libswscale: bayer to rgb24 & yv12 colorspace converters 

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
tags/n2.2-rc1
Peter Ross Michael Niedermayer 11 years ago
parent
7e23cfba76
commit
02b63246cf
4 changed files with 434 additions and 1 deletions
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  1. +236
    -0
      libswscale/bayer_template.c
  2. +16
    -0
      libswscale/swscale_internal.h
  3. +170
    -1
      libswscale/swscale_unscaled.c
  4. +12
    -0
      libswscale/utils.c

+ 236
- 0
libswscale/bayer_template.c View File

@@ -0,0 +1,236 @@
/*
* Bayer-to-RGB/YV12 template
* Copyright (c) 2011-2014 Peter Ross <pross@xvid.org>
*
* 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
*/

#if defined(BAYER_BGGR) || defined(BAYER_GBRG)
#define BAYER_R 0
#define BAYER_G 1
#define BAYER_B 2
#endif
#if defined(BAYER_RGGB) || defined(BAYER_GRBG)
#define BAYER_R 2
#define BAYER_G 1
#define BAYER_B 0
#endif

#if defined(BAYER_8)
#define BAYER_READ(x) (x)
#define BAYER_SIZEOF 1
#define BAYER_SHIFT 0
#endif
#if defined(BAYER_16LE)
#define BAYER_READ(x) AV_RL16(&x)
#define BAYER_SIZEOF 2
#define BAYER_SHIFT 8
#endif
#if defined(BAYER_16BE)
#define BAYER_READ(x) AV_RB16(&x)
#define BAYER_SIZEOF 2
#define BAYER_SHIFT 8
#endif

#define S(y, x) BAYER_READ(src[(y)*src_stride + BAYER_SIZEOF*(x)])
#define T(y, x) (unsigned int)S(y, x)
#define R(y, x) dst[(y)*dst_stride + (x)*3 + BAYER_R]
#define G(y, x) dst[(y)*dst_stride + (x)*3 + BAYER_G]
#define B(y, x) dst[(y)*dst_stride + (x)*3 + BAYER_B]

#if defined(BAYER_BGGR) || defined(BAYER_RGGB)
#define BAYER_TO_RGB24_COPY \
R(0, 0) = \
R(0, 1) = \
R(1, 1) = \
R(1, 0) = S(1, 1) >> BAYER_SHIFT; \
\
G(0, 1) = S(0, 1) >> BAYER_SHIFT; \
G(0, 0) = \
G(1, 1) = (T(0, 1) + T(1, 0)) >> (1 + BAYER_SHIFT); \
G(1, 0) = S(1, 0) >> BAYER_SHIFT; \
\
B(1, 1) = \
B(0, 0) = \
B(0, 1) = \
B(1, 0) = S(0, 0) >> BAYER_SHIFT;
#define BAYER_TO_RGB24_INTERPOLATE \
R(0, 0) = (T(-1, -1) + T(-1, 1) + T(1, -1) + T(1, 1)) >> (2 + BAYER_SHIFT); \
G(0, 0) = (T(-1, 0) + T( 0, -1) + T(0, 1) + T(1, 0)) >> (2 + BAYER_SHIFT); \
B(0, 0) = S(0, 0) >> BAYER_SHIFT; \
\
R(0, 1) = (T(-1, 1) + T(1, 1)) >> (1 + BAYER_SHIFT); \
G(0, 1) = S(0, 1) >> BAYER_SHIFT; \
B(0, 1) = (T(0, 0) + T(0, 2)) >> (1 + BAYER_SHIFT); \
\
R(1, 0) = (T(1, -1) + T(1, 1)) >> (1 + BAYER_SHIFT); \
G(1, 0) = S(1, 0) >> BAYER_SHIFT; \
B(1, 0) = (T(0, 0) + T(2, 0)) >> (1 + BAYER_SHIFT); \
\
R(1, 1) = S(1, 1) >> BAYER_SHIFT; \
G(1, 1) = (T(0, 1) + T(1, 0) + T(1, 2) + T(2, 1)) >> (2 + BAYER_SHIFT); \
B(1, 1) = (T(0, 0) + T(0, 2) + T(2, 0) + T(2, 2)) >> (2 + BAYER_SHIFT);
#else
#define BAYER_TO_RGB24_COPY \
R(0, 0) = \
R(0, 1) = \
R(1, 1) = \
R(1, 0) = S(1, 0) >> BAYER_SHIFT; \
\
G(0, 0) = S(0, 0) >> BAYER_SHIFT; \
G(1, 1) = S(1, 1) >> BAYER_SHIFT; \
G(0, 1) = \
G(1, 0) = (T(0, 0) + T(1, 1)) >> (1 + BAYER_SHIFT); \
\
B(1, 1) = \
B(0, 0) = \
B(0, 1) = \
B(1, 0) = S(0, 1) >> BAYER_SHIFT;
#define BAYER_TO_RGB24_INTERPOLATE \
R(0, 0) = (T(-1, 0) + T(1, 0)) >> (1 + BAYER_SHIFT); \
G(0, 0) = S(0, 0) >> BAYER_SHIFT; \
B(0, 0) = (T(0, -1) + T(0, 1)) >> (1 + BAYER_SHIFT); \
\
R(0, 1) = (T(-1, 0) + T(-1, 2) + T(1, 0) + T(1, 2)) >> (2 + BAYER_SHIFT); \
G(0, 1) = (T(-1, 1) + T(0, 0) + T(0, 2) + T(1, 1)) >> (2 + BAYER_SHIFT); \
B(0, 1) = S(0, 1) >> BAYER_SHIFT; \
\
R(1, 0) = S(1, 0) >> BAYER_SHIFT; \
G(1, 0) = (T(0, 0) + T(1, -1) + T(1, 1) + T(2, 0)) >> (2 + BAYER_SHIFT); \
B(1, 0) = (T(0, -1) + T(0, 1) + T(2, -1) + T(2, 1)) >> (2 + BAYER_SHIFT); \
\
R(1, 1) = (T(1, 0) + T(1, 2)) >> (1 + BAYER_SHIFT); \
G(1, 1) = S(1, 1) >> BAYER_SHIFT; \
B(1, 1) = (T(0, 1) + T(2, 1)) >> (1 + BAYER_SHIFT);
#endif

/**
* invoke ff_rgb24toyv12 for 2x2 pixels
*/
#define rgb24toyv12_2x2(src, dstY, dstU, dstV, luma_stride, src_stride, rgb2yuv) \
ff_rgb24toyv12(src, dstY, dstV, dstU, 2, 2, luma_stride, 0, src_stride, rgb2yuv)

static void BAYER_RENAME(rgb24_copy)(const uint8_t *src, int src_stride, uint8_t *dst, int dst_stride, int width)
{
int i;
for (i = 0 ; i < width; i+= 2) {
BAYER_TO_RGB24_COPY
src += 2 * BAYER_SIZEOF;
dst += 6;
}
}

static void BAYER_RENAME(rgb24_interpolate)(const uint8_t *src, int src_stride, uint8_t *dst, int dst_stride, int width)
{
int i;

BAYER_TO_RGB24_COPY
src += 2 * BAYER_SIZEOF;
dst += 6;

for (i = 2 ; i < width - 2; i+= 2) {
BAYER_TO_RGB24_INTERPOLATE
src += 2 * BAYER_SIZEOF;
dst += 6;
}

if (width > 2) {
BAYER_TO_RGB24_COPY
}
}

static void BAYER_RENAME(yv12_copy)(const uint8_t *src, int src_stride, uint8_t *dstY, uint8_t *dstU, uint8_t *dstV, int luma_stride, int width, int32_t *rgb2yuv)
{
uint8_t dst[12];
const int dst_stride = 6;
int i;
for (i = 0 ; i < width; i+= 2) {
BAYER_TO_RGB24_COPY
rgb24toyv12_2x2(dst, dstY, dstU, dstV, luma_stride, dst_stride, rgb2yuv);
src += 2 * BAYER_SIZEOF;
dstY += 2;
dstU++;
dstV++;
}
}

static void BAYER_RENAME(yv12_interpolate)(const uint8_t *src, int src_stride, uint8_t *dstY, uint8_t *dstU, uint8_t *dstV, int luma_stride, int width, int32_t *rgb2yuv)
{
uint8_t dst[12];
const int dst_stride = 6;
int i;

BAYER_TO_RGB24_COPY
rgb24toyv12_2x2(dst, dstY, dstU, dstV, luma_stride, dst_stride, rgb2yuv);
src += 2 * BAYER_SIZEOF;
dstY += 2;
dstU++;
dstV++;

for (i = 2 ; i < width - 2; i+= 2) {
BAYER_TO_RGB24_INTERPOLATE
rgb24toyv12_2x2(dst, dstY, dstU, dstV, luma_stride, dst_stride, rgb2yuv);
src += 2 * BAYER_SIZEOF;
dstY += 2;
dstU++;
dstV++;
}

if (width > 2) {
BAYER_TO_RGB24_COPY
rgb24toyv12_2x2(dst, dstY, dstU, dstV, luma_stride, dst_stride, rgb2yuv);
}
}

#undef S
#undef T
#undef R
#undef G
#undef B
#undef BAYER_TO_RGB24_COPY
#undef BAYER_TO_RGB24_INTERPOLATE

#undef BAYER_RENAME

#undef BAYER_R
#undef BAYER_G
#undef BAYER_B
#undef BAYER_READ
#undef BAYER_SIZEOF
#undef BAYER_SHIFT

#if defined(BAYER_BGGR)
#undef BAYER_BGGR
#endif
#if defined(BAYER_RGGB)
#undef BAYER_RGGB
#endif
#if defined(BAYER_GBRG)
#undef BAYER_GBRG
#endif
#if defined(BAYER_GRBG)
#undef BAYER_GRBG
#endif
#if defined(BAYER_8)
#undef BAYER_8
#endif
#if defined(BAYER_16LE)
#undef BAYER_16LE
#endif
#if defined(BAYER_16BE)
#undef BAYER_16BE
#endif

+ 16
- 0
libswscale/swscale_internal.h View File

@@ -749,8 +749,24 @@ static av_always_inline int isRGB(enum AVPixelFormat pix_fmt)
|| (x) == AV_PIX_FMT_BGR24 \
)

#define isBayer(x) ( \
(x)==AV_PIX_FMT_BAYER_BGGR8 \
|| (x)==AV_PIX_FMT_BAYER_BGGR16LE \
|| (x)==AV_PIX_FMT_BAYER_BGGR16BE \
|| (x)==AV_PIX_FMT_BAYER_RGGB8 \
|| (x)==AV_PIX_FMT_BAYER_RGGB16LE \
|| (x)==AV_PIX_FMT_BAYER_RGGB16BE \
|| (x)==AV_PIX_FMT_BAYER_GBRG8 \
|| (x)==AV_PIX_FMT_BAYER_GBRG16LE \
|| (x)==AV_PIX_FMT_BAYER_GBRG16BE \
|| (x)==AV_PIX_FMT_BAYER_GRBG8 \
|| (x)==AV_PIX_FMT_BAYER_GRBG16LE \
|| (x)==AV_PIX_FMT_BAYER_GRBG16BE \
)

#define isAnyRGB(x) \
( \
isBayer(x) || \
isRGBinInt(x) || \
isBGRinInt(x) || \
isRGB(x) \


+ 170
- 1
libswscale/swscale_unscaled.c View File

@@ -968,6 +968,160 @@ static int rgbToPlanarRgbWrapper(SwsContext *c, const uint8_t *src[],
return srcSliceH;
}

#define BAYER_GBRG
#define BAYER_8
#define BAYER_RENAME(x) bayer_gbrg8_to_##x
#include "bayer_template.c"

#define BAYER_GBRG
#define BAYER_16LE
#define BAYER_RENAME(x) bayer_gbrg16le_to_##x
#include "bayer_template.c"

#define BAYER_GBRG
#define BAYER_16BE
#define BAYER_RENAME(x) bayer_gbrg16be_to_##x
#include "bayer_template.c"

#define BAYER_GRBG
#define BAYER_8
#define BAYER_RENAME(x) bayer_grbg8_to_##x
#include "bayer_template.c"

#define BAYER_GRBG
#define BAYER_16LE
#define BAYER_RENAME(x) bayer_grbg16le_to_##x
#include "bayer_template.c"

#define BAYER_GRBG
#define BAYER_16BE
#define BAYER_RENAME(x) bayer_grbg16be_to_##x
#include "bayer_template.c"

#define BAYER_BGGR
#define BAYER_8
#define BAYER_RENAME(x) bayer_bggr8_to_##x
#include "bayer_template.c"

#define BAYER_BGGR
#define BAYER_16LE
#define BAYER_RENAME(x) bayer_bggr16le_to_##x
#include "bayer_template.c"

#define BAYER_BGGR
#define BAYER_16BE
#define BAYER_RENAME(x) bayer_bggr16be_to_##x
#include "bayer_template.c"

#define BAYER_RGGB
#define BAYER_8
#define BAYER_RENAME(x) bayer_rggb8_to_##x
#include "bayer_template.c"

#define BAYER_RGGB
#define BAYER_16LE
#define BAYER_RENAME(x) bayer_rggb16le_to_##x
#include "bayer_template.c"

#define BAYER_RGGB
#define BAYER_16BE
#define BAYER_RENAME(x) bayer_rggb16be_to_##x
#include "bayer_template.c"

static int bayer_to_rgb24_wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
int srcSliceH, uint8_t* dst[], int dstStride[])
{
uint8_t *dstPtr= dst[0];
const uint8_t *srcPtr= src[0];
int i;
void (*copy) (const uint8_t *src, int src_stride, uint8_t *dst, int dst_stride, int width);
void (*interpolate)(const uint8_t *src, int src_stride, uint8_t *dst, int dst_stride, int width);

switch(c->srcFormat) {
#define CASE(pixfmt, prefix) \
case pixfmt: copy = bayer_##prefix##_to_rgb24_copy; \
interpolate = bayer_##prefix##_to_rgb24_interpolate; \
break;
CASE(AV_PIX_FMT_BAYER_BGGR8, bggr8)
CASE(AV_PIX_FMT_BAYER_BGGR16LE, bggr16le)
CASE(AV_PIX_FMT_BAYER_BGGR16BE, bggr16be)
CASE(AV_PIX_FMT_BAYER_RGGB8, rggb8)
CASE(AV_PIX_FMT_BAYER_RGGB16LE, rggb16le)
CASE(AV_PIX_FMT_BAYER_RGGB16BE, rggb16be)
CASE(AV_PIX_FMT_BAYER_GBRG8, gbrg8)
CASE(AV_PIX_FMT_BAYER_GBRG16LE, gbrg16le)
CASE(AV_PIX_FMT_BAYER_GBRG16BE, gbrg16be)
CASE(AV_PIX_FMT_BAYER_GRBG8, grbg8)
CASE(AV_PIX_FMT_BAYER_GRBG16LE, grbg16le)
CASE(AV_PIX_FMT_BAYER_GRBG16BE, grbg16be)
#undef CASE
default: return 0;
}

copy(srcPtr, srcStride[0], dstPtr, dstStride[0], c->srcW);
srcPtr += 2 * srcStride[0];
dstPtr += 2 * dstStride[0];

for (i = 2; i < srcSliceH - 2; i += 2) {
interpolate(srcPtr, srcStride[0], dstPtr, dstStride[0], c->srcW);
srcPtr += 2 * srcStride[0];
dstPtr += 2 * dstStride[0];
}

copy(srcPtr, srcStride[0], dstPtr, dstStride[0], c->srcW);
return srcSliceH;
}

static int bayer_to_yv12_wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
int srcSliceH, uint8_t* dst[], int dstStride[])
{
const uint8_t *srcPtr= src[0];
uint8_t *dstY= dst[0];
uint8_t *dstU= dst[1];
uint8_t *dstV= dst[2];
int i;
void (*copy) (const uint8_t *src, int src_stride, uint8_t *dstY, uint8_t *dstU, uint8_t *dstV, int luma_stride, int width, int32_t *rgb2yuv);
void (*interpolate)(const uint8_t *src, int src_stride, uint8_t *dstY, uint8_t *dstU, uint8_t *dstV, int luma_stride, int width, int32_t *rgb2yuv);

switch(c->srcFormat) {
#define CASE(pixfmt, prefix) \
case pixfmt: copy = bayer_##prefix##_to_yv12_copy; \
interpolate = bayer_##prefix##_to_yv12_interpolate; \
break;
CASE(AV_PIX_FMT_BAYER_BGGR8, bggr8)
CASE(AV_PIX_FMT_BAYER_BGGR16LE, bggr16le)
CASE(AV_PIX_FMT_BAYER_BGGR16BE, bggr16be)
CASE(AV_PIX_FMT_BAYER_RGGB8, rggb8)
CASE(AV_PIX_FMT_BAYER_RGGB16LE, rggb16le)
CASE(AV_PIX_FMT_BAYER_RGGB16BE, rggb16be)
CASE(AV_PIX_FMT_BAYER_GBRG8, gbrg8)
CASE(AV_PIX_FMT_BAYER_GBRG16LE, gbrg16le)
CASE(AV_PIX_FMT_BAYER_GBRG16BE, gbrg16be)
CASE(AV_PIX_FMT_BAYER_GRBG8, grbg8)
CASE(AV_PIX_FMT_BAYER_GRBG16LE, grbg16le)
CASE(AV_PIX_FMT_BAYER_GRBG16BE, grbg16be)
#undef CASE
default: return 0;
}

copy(srcPtr, srcStride[0], dstY, dstU, dstV, dstStride[0], c->srcW, c->input_rgb2yuv_table);
srcPtr += 2 * srcStride[0];
dstY += 2 * dstStride[0];
dstU += dstStride[1];
dstV += dstStride[1];

for (i = 2; i < srcSliceH - 2; i += 2) {
interpolate(srcPtr, srcStride[0], dstY, dstU, dstV, dstStride[0], c->srcW, c->input_rgb2yuv_table);
srcPtr += 2 * srcStride[0];
dstY += 2 * dstStride[0];
dstU += dstStride[1];
dstV += dstStride[1];
}

copy(srcPtr, srcStride[0], dstY, dstU, dstV, dstStride[0], c->srcW, c->input_rgb2yuv_table);
return srcSliceH;
}

#define isRGBA32(x) ( \
(x) == AV_PIX_FMT_ARGB \
|| (x) == AV_PIX_FMT_RGBA \
@@ -1491,8 +1645,23 @@ void ff_get_unscaled_swscale(SwsContext *c)
isPackedRGB(srcFormat) && dstFormat == AV_PIX_FMT_GBRP)
c->swscale = rgbToPlanarRgbWrapper;

if (isBayer(srcFormat)) {
if (dstFormat == AV_PIX_FMT_RGB24)
c->swscale = bayer_to_rgb24_wrapper;
else if (dstFormat == AV_PIX_FMT_YUV420P)
c->swscale = bayer_to_yv12_wrapper;
else if (!isBayer(dstFormat)) {
av_log(c, AV_LOG_ERROR, "unsupported bayer conversion\n");
av_assert0(0);
}
}

/* bswap 16 bits per pixel/component packed formats */
if (IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_BGR444) ||
if (IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_BAYER_BGGR16) ||
IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_BAYER_RGGB16) ||
IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_BAYER_GBRG16) ||
IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_BAYER_GRBG16) ||
IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_BGR444) ||
IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_BGR48) ||
IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_BGRA64) ||
IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_BGR555) ||


+ 12
- 0
libswscale/utils.c View File

@@ -207,6 +207,18 @@ static const FormatEntry format_entries[AV_PIX_FMT_NB] = {
[AV_PIX_FMT_GBRAP] = { 1, 1 },
[AV_PIX_FMT_GBRAP16LE] = { 1, 0 },
[AV_PIX_FMT_GBRAP16BE] = { 1, 0 },
[AV_PIX_FMT_BAYER_BGGR8] = { 1, 0 },
[AV_PIX_FMT_BAYER_RGGB8] = { 1, 0 },
[AV_PIX_FMT_BAYER_GBRG8] = { 1, 0 },
[AV_PIX_FMT_BAYER_GRBG8] = { 1, 0 },
[AV_PIX_FMT_BAYER_BGGR16LE] = { 1, 0 },
[AV_PIX_FMT_BAYER_BGGR16BE] = { 1, 0 },
[AV_PIX_FMT_BAYER_RGGB16LE] = { 1, 0 },
[AV_PIX_FMT_BAYER_RGGB16BE] = { 1, 0 },
[AV_PIX_FMT_BAYER_GBRG16LE] = { 1, 0 },
[AV_PIX_FMT_BAYER_GBRG16BE] = { 1, 0 },
[AV_PIX_FMT_BAYER_GRBG16LE] = { 1, 0 },
[AV_PIX_FMT_BAYER_GRBG16BE] = { 1, 0 },
};

int sws_isSupportedInput(enum AVPixelFormat pix_fmt)


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