/*
* 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 "libavutil/pixdesc.h"
#include <stdint.h>
#include "config.h"
#include "libswscale/swscale_internal.h"
#if defined(__FDPIC__) && CONFIG_SRAM
#define L1CODE __attribute__((l1_text))
#else
#define L1CODE
#endif
void ff_bfin_yuv2rgb555_line(const uint8_t *Y, const uint8_t *U,
const uint8_t *V, uint8_t *out,
int w, uint32_t *coeffs) L1CODE;
void ff_bfin_yuv2rgb565_line(const uint8_t *Y, const uint8_t *U,
const uint8_t *V, uint8_t *out,
int w, uint32_t *coeffs) L1CODE;
void ff_bfin_yuv2rgb24_line(const uint8_t *Y, const uint8_t *U,
const uint8_t *V, uint8_t *out,
int w, uint32_t *coeffs) L1CODE;
typedef void (*ltransform)(const uint8_t *Y, const uint8_t *U, const 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, const uint8_t **in, int *instrides,
int srcSliceY, int srcSliceH, uint8_t **oplanes,
int *outstrides, ltransform lcscf,
int rgb, int masks)
{
const uint8_t *py, *pu, *pv;
uint8_t *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, const 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, const 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, const 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, const 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, const 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, const 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 AV_PIX_FMT_RGB555:
f = bfin_yuv420_rgb555;
break;
case AV_PIX_FMT_BGR555:
f = bfin_yuv420_bgr555;
break;
case AV_PIX_FMT_RGB565:
f = bfin_yuv420_rgb565;
break;
case AV_PIX_FMT_BGR565:
f = bfin_yuv420_bgr565;
break;
case AV_PIX_FMT_RGB24:
f = bfin_yuv420_rgb24;
break;
case AV_PIX_FMT_BGR24:
f = bfin_yuv420_bgr24;
break;
default:
return 0;
}
av_log(c, AV_LOG_INFO, "BlackFin accelerated color space converter %s\n",
av_get_pix_fmt_name(c->dstFormat));
return f;
}