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/*
* Copyright (C) 2007 Marc Hoffman <marc.hoffman@analog.com>
*
* Blackfin video color space converter operations
* convert I420 YV12 to RGB in various formats
*
* 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
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <inttypes.h>
#include <assert.h>
#include "config.h"
#include <unistd.h>
#include "libswscale/rgb2rgb.h"
#include "libswscale/swscale.h"
#include "libswscale/swscale_internal.h"
#ifdef __FDPIC__
#define L1CODE __attribute__ ((l1_text))
#else
#define L1CODE
#endif
void ff_bfin_yuv2rgb555_line(uint8_t *Y, uint8_t *U, uint8_t *V, uint8_t *out,
int w, uint32_t *coeffs) L1CODE;
void ff_bfin_yuv2rgb565_line(uint8_t *Y, uint8_t *U, uint8_t *V, uint8_t *out,
int w, uint32_t *coeffs) L1CODE;
void ff_bfin_yuv2rgb24_line(uint8_t *Y, uint8_t *U, uint8_t *V, uint8_t *out,
int w, uint32_t *coeffs) L1CODE;
typedef void (* ltransform)(uint8_t *Y, uint8_t *U, uint8_t *V, uint8_t *out,
int w, uint32_t *coeffs);
static void bfin_prepare_coefficients(SwsContext *c, int rgb, int masks)
{
int oy;
oy = c->yOffset&0xffff;
oy = oy >> 3; // keep everything U8.0 for offset calculation
c->oc = 128*0x01010101U;
c->oy = oy*0x01010101U;
/* copy 64bit vector coeffs down to 32bit vector coeffs */
c->cy = c->yCoeff;
c->zero = 0;
if (rgb) {
c->crv = c->vrCoeff;
c->cbu = c->ubCoeff;
c->cgu = c->ugCoeff;
c->cgv = c->vgCoeff;
} else {
c->crv = c->ubCoeff;
c->cbu = c->vrCoeff;
c->cgu = c->vgCoeff;
c->cgv = c->ugCoeff;
}
if (masks == 555) {
c->rmask = 0x001f * 0x00010001U;
c->gmask = 0x03e0 * 0x00010001U;
c->bmask = 0x7c00 * 0x00010001U;
} else if (masks == 565) {
c->rmask = 0x001f * 0x00010001U;
c->gmask = 0x07e0 * 0x00010001U;
c->bmask = 0xf800 * 0x00010001U;
}
}
static int core_yuv420_rgb(SwsContext *c,
uint8_t **in, int *instrides,
int srcSliceY, int srcSliceH,
uint8_t **oplanes, int *outstrides,
ltransform lcscf, int rgb, int masks)
{
uint8_t *py,*pu,*pv,*op;
int w = instrides[0];
int h2 = srcSliceH>>1;
int i;
bfin_prepare_coefficients(c, rgb, masks);
py = in[0];
pu = in[1+(1^rgb)];
pv = in[1+(0^rgb)];
op = oplanes[0] + srcSliceY*outstrides[0];
for (i=0;i<h2;i++) {
lcscf(py, pu, pv, op, w, &c->oy);
py += instrides[0];
op += outstrides[0];
lcscf(py, pu, pv, op, w, &c->oy);
py += instrides[0];
pu += instrides[1];
pv += instrides[2];
op += outstrides[0];
}
return srcSliceH;
}
static int bfin_yuv420_rgb555(SwsContext *c,
uint8_t **in, int *instrides,
int srcSliceY, int srcSliceH,
uint8_t **oplanes, int *outstrides)
{
return core_yuv420_rgb(c, in, instrides, srcSliceY, srcSliceH, oplanes,
outstrides, ff_bfin_yuv2rgb555_line, 1, 555);
}
static int bfin_yuv420_bgr555(SwsContext *c,
uint8_t **in, int *instrides,
int srcSliceY, int srcSliceH,
uint8_t **oplanes, int *outstrides)
{
return core_yuv420_rgb(c, in, instrides, srcSliceY, srcSliceH, oplanes,
outstrides, ff_bfin_yuv2rgb555_line, 0, 555);
}
static int bfin_yuv420_rgb24(SwsContext *c,
uint8_t **in, int *instrides,
int srcSliceY, int srcSliceH,
uint8_t **oplanes, int *outstrides)
{
return core_yuv420_rgb(c, in, instrides, srcSliceY, srcSliceH, oplanes,
outstrides, ff_bfin_yuv2rgb24_line, 1, 888);
}
static int bfin_yuv420_bgr24(SwsContext *c,
uint8_t **in, int *instrides,
int srcSliceY, int srcSliceH,
uint8_t **oplanes, int *outstrides)
{
return core_yuv420_rgb(c, in, instrides, srcSliceY, srcSliceH, oplanes,
outstrides, ff_bfin_yuv2rgb24_line, 0, 888);
}
static int bfin_yuv420_rgb565(SwsContext *c,
uint8_t **in, int *instrides,
int srcSliceY, int srcSliceH,
uint8_t **oplanes, int *outstrides)
{
return core_yuv420_rgb(c, in, instrides, srcSliceY, srcSliceH, oplanes,
outstrides, ff_bfin_yuv2rgb565_line, 1, 565);
}
static int bfin_yuv420_bgr565(SwsContext *c,
uint8_t **in, int *instrides,
int srcSliceY, int srcSliceH,
uint8_t **oplanes, int *outstrides)
{
return core_yuv420_rgb(c, in, instrides, srcSliceY, srcSliceH, oplanes,
outstrides, ff_bfin_yuv2rgb565_line, 0, 565);
}
SwsFunc ff_yuv2rgb_get_func_ptr_bfin(SwsContext *c)
{
SwsFunc f;
switch(c->dstFormat) {
case PIX_FMT_RGB555: f = bfin_yuv420_rgb555; break;
case PIX_FMT_BGR555: f = bfin_yuv420_bgr555; break;
case PIX_FMT_RGB565: f = bfin_yuv420_rgb565; break;
case PIX_FMT_BGR565: f = bfin_yuv420_bgr565; break;
case PIX_FMT_RGB24: f = bfin_yuv420_rgb24; break;
case PIX_FMT_BGR24: f = bfin_yuv420_bgr24; break;
default:
return 0;
}
av_log(c, AV_LOG_INFO, "BlackFin accelerated color space converter %s\n",
sws_format_name (c->dstFormat));
return f;
}
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