forked from KolibriOS/kolibrios
204 lines
6.4 KiB
C
204 lines
6.4 KiB
C
/*
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* Copyright (C) 2007 Marc Hoffman <marc.hoffman@analog.com>
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*
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* Blackfin video color space converter operations
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* convert I420 YV12 to RGB in various formats
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "libavutil/pixdesc.h"
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#include <stdint.h>
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#include "config.h"
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#include "libavutil/attributes.h"
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#include "libswscale/swscale_internal.h"
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#if defined(__FDPIC__) && CONFIG_SRAM
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#define L1CODE __attribute__((l1_text))
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#else
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#define L1CODE
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#endif
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void ff_bfin_yuv2rgb555_line(const uint8_t *Y, const uint8_t *U,
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const uint8_t *V, uint8_t *out,
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int w, uint32_t *coeffs) L1CODE;
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void ff_bfin_yuv2rgb565_line(const uint8_t *Y, const uint8_t *U,
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const uint8_t *V, uint8_t *out,
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int w, uint32_t *coeffs) L1CODE;
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void ff_bfin_yuv2rgb24_line(const uint8_t *Y, const uint8_t *U,
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const uint8_t *V, uint8_t *out,
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int w, uint32_t *coeffs) L1CODE;
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typedef void (*ltransform)(const uint8_t *Y, const uint8_t *U, const uint8_t *V,
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uint8_t *out, int w, uint32_t *coeffs);
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static void bfin_prepare_coefficients(SwsContext *c, int rgb, int masks)
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{
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int oy;
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oy = c->yOffset & 0xffff;
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oy = oy >> 3; // keep everything U8.0 for offset calculation
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c->oc = 128 * 0x01010101U;
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c->oy = oy * 0x01010101U;
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/* copy 64bit vector coeffs down to 32bit vector coeffs */
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c->cy = c->yCoeff;
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c->zero = 0;
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if (rgb) {
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c->crv = c->vrCoeff;
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c->cbu = c->ubCoeff;
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c->cgu = c->ugCoeff;
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c->cgv = c->vgCoeff;
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} else {
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c->crv = c->ubCoeff;
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c->cbu = c->vrCoeff;
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c->cgu = c->vgCoeff;
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c->cgv = c->ugCoeff;
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}
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if (masks == 555) {
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c->rmask = 0x001f * 0x00010001U;
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c->gmask = 0x03e0 * 0x00010001U;
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c->bmask = 0x7c00 * 0x00010001U;
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} else if (masks == 565) {
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c->rmask = 0x001f * 0x00010001U;
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c->gmask = 0x07e0 * 0x00010001U;
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c->bmask = 0xf800 * 0x00010001U;
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}
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}
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static int core_yuv420_rgb(SwsContext *c, const uint8_t **in, int *instrides,
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int srcSliceY, int srcSliceH, uint8_t **oplanes,
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int *outstrides, ltransform lcscf,
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int rgb, int masks)
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{
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const uint8_t *py, *pu, *pv;
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uint8_t *op;
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int w = instrides[0];
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int h2 = srcSliceH >> 1;
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int i;
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bfin_prepare_coefficients(c, rgb, masks);
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py = in[0];
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pu = in[1 + (1 ^ rgb)];
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pv = in[1 + (0 ^ rgb)];
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op = oplanes[0] + srcSliceY * outstrides[0];
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for (i = 0; i < h2; i++) {
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lcscf(py, pu, pv, op, w, &c->oy);
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py += instrides[0];
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op += outstrides[0];
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lcscf(py, pu, pv, op, w, &c->oy);
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py += instrides[0];
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pu += instrides[1];
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pv += instrides[2];
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op += outstrides[0];
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}
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return srcSliceH;
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}
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static int bfin_yuv420_rgb555(SwsContext *c, const uint8_t **in, int *instrides,
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int srcSliceY, int srcSliceH,
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uint8_t **oplanes, int *outstrides)
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{
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return core_yuv420_rgb(c, in, instrides, srcSliceY, srcSliceH, oplanes,
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outstrides, ff_bfin_yuv2rgb555_line, 1, 555);
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}
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static int bfin_yuv420_bgr555(SwsContext *c, const uint8_t **in, int *instrides,
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int srcSliceY, int srcSliceH,
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uint8_t **oplanes, int *outstrides)
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{
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return core_yuv420_rgb(c, in, instrides, srcSliceY, srcSliceH, oplanes,
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outstrides, ff_bfin_yuv2rgb555_line, 0, 555);
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}
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static int bfin_yuv420_rgb24(SwsContext *c, const uint8_t **in, int *instrides,
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int srcSliceY, int srcSliceH,
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uint8_t **oplanes, int *outstrides)
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{
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return core_yuv420_rgb(c, in, instrides, srcSliceY, srcSliceH, oplanes,
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outstrides, ff_bfin_yuv2rgb24_line, 1, 888);
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}
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static int bfin_yuv420_bgr24(SwsContext *c, const uint8_t **in, int *instrides,
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int srcSliceY, int srcSliceH,
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uint8_t **oplanes, int *outstrides)
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{
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return core_yuv420_rgb(c, in, instrides, srcSliceY, srcSliceH, oplanes,
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outstrides, ff_bfin_yuv2rgb24_line, 0, 888);
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}
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static int bfin_yuv420_rgb565(SwsContext *c, const uint8_t **in, int *instrides,
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int srcSliceY, int srcSliceH,
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uint8_t **oplanes, int *outstrides)
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{
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return core_yuv420_rgb(c, in, instrides, srcSliceY, srcSliceH, oplanes,
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outstrides, ff_bfin_yuv2rgb565_line, 1, 565);
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}
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static int bfin_yuv420_bgr565(SwsContext *c, const uint8_t **in, int *instrides,
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int srcSliceY, int srcSliceH,
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uint8_t **oplanes, int *outstrides)
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{
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return core_yuv420_rgb(c, in, instrides, srcSliceY, srcSliceH, oplanes,
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outstrides, ff_bfin_yuv2rgb565_line, 0, 565);
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}
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av_cold SwsFunc ff_yuv2rgb_init_bfin(SwsContext *c)
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{
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SwsFunc f;
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switch (c->dstFormat) {
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case AV_PIX_FMT_RGB555:
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f = bfin_yuv420_rgb555;
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break;
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case AV_PIX_FMT_BGR555:
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f = bfin_yuv420_bgr555;
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break;
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case AV_PIX_FMT_RGB565:
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f = bfin_yuv420_rgb565;
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break;
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case AV_PIX_FMT_BGR565:
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f = bfin_yuv420_bgr565;
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break;
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case AV_PIX_FMT_RGB24:
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f = bfin_yuv420_rgb24;
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break;
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case AV_PIX_FMT_BGR24:
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f = bfin_yuv420_bgr24;
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break;
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default:
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return 0;
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}
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av_log(c, AV_LOG_INFO, "BlackFin accelerated color space converter %s\n",
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av_get_pix_fmt_name(c->dstFormat));
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return f;
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}
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