diff options
Diffstat (limited to 'ffmpeg/libswscale/bfin/yuv2rgb_bfin.c')
| -rw-r--r-- | ffmpeg/libswscale/bfin/yuv2rgb_bfin.c | 202 |
1 files changed, 202 insertions, 0 deletions
diff --git a/ffmpeg/libswscale/bfin/yuv2rgb_bfin.c b/ffmpeg/libswscale/bfin/yuv2rgb_bfin.c new file mode 100644 index 0000000..e1b7afa --- /dev/null +++ b/ffmpeg/libswscale/bfin/yuv2rgb_bfin.c @@ -0,0 +1,202 @@ +/* + * 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; +} |