2 * Copyright (C) 2007 Marc Hoffman <marc.hoffman@analog.com>
4 * Blackfin video color space converter operations
5 * convert I420 YV12 to RGB in various formats
7 * This file is part of FFmpeg.
9 * FFmpeg is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
14 * FFmpeg is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with FFmpeg; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24 #include "libavutil/pixdesc.h"
28 #include "libavutil/attributes.h"
29 #include "libavutil/bfin/attributes.h"
30 #include "libswscale/swscale_internal.h"
32 void ff_bfin_yuv2rgb555_line(const uint8_t *Y, const uint8_t *U,
33 const uint8_t *V, uint8_t *out,
34 int w, uint32_t *coeffs) attribute_l1_text;
36 void ff_bfin_yuv2rgb565_line(const uint8_t *Y, const uint8_t *U,
37 const uint8_t *V, uint8_t *out,
38 int w, uint32_t *coeffs) attribute_l1_text;
40 void ff_bfin_yuv2rgb24_line(const uint8_t *Y, const uint8_t *U,
41 const uint8_t *V, uint8_t *out,
42 int w, uint32_t *coeffs) attribute_l1_text;
44 typedef void (*ltransform)(const uint8_t *Y, const uint8_t *U, const uint8_t *V,
45 uint8_t *out, int w, uint32_t *coeffs);
47 static void bfin_prepare_coefficients(SwsContext *c, int rgb, int masks)
50 oy = c->yOffset & 0xffff;
51 oy = oy >> 3; // keep everything U8.0 for offset calculation
53 c->oc = 128 * 0x01010101U;
54 c->oy = oy * 0x01010101U;
56 /* copy 64bit vector coeffs down to 32bit vector coeffs */
73 c->rmask = 0x001f * 0x00010001U;
74 c->gmask = 0x03e0 * 0x00010001U;
75 c->bmask = 0x7c00 * 0x00010001U;
76 } else if (masks == 565) {
77 c->rmask = 0x001f * 0x00010001U;
78 c->gmask = 0x07e0 * 0x00010001U;
79 c->bmask = 0xf800 * 0x00010001U;
83 static int core_yuv420_rgb(SwsContext *c, const uint8_t **in, int *instrides,
84 int srcSliceY, int srcSliceH, uint8_t **oplanes,
85 int *outstrides, ltransform lcscf,
88 const uint8_t *py, *pu, *pv;
91 int h2 = srcSliceH >> 1;
94 bfin_prepare_coefficients(c, rgb, masks);
97 pu = in[1 + (1 ^ rgb)];
98 pv = in[1 + (0 ^ rgb)];
100 op = oplanes[0] + srcSliceY * outstrides[0];
102 for (i = 0; i < h2; i++) {
103 lcscf(py, pu, pv, op, w, &c->oy);
108 lcscf(py, pu, pv, op, w, &c->oy);
119 static int bfin_yuv420_rgb555(SwsContext *c, const uint8_t **in, int *instrides,
120 int srcSliceY, int srcSliceH,
121 uint8_t **oplanes, int *outstrides)
123 return core_yuv420_rgb(c, in, instrides, srcSliceY, srcSliceH, oplanes,
124 outstrides, ff_bfin_yuv2rgb555_line, 1, 555);
127 static int bfin_yuv420_bgr555(SwsContext *c, const uint8_t **in, int *instrides,
128 int srcSliceY, int srcSliceH,
129 uint8_t **oplanes, int *outstrides)
131 return core_yuv420_rgb(c, in, instrides, srcSliceY, srcSliceH, oplanes,
132 outstrides, ff_bfin_yuv2rgb555_line, 0, 555);
135 static int bfin_yuv420_rgb24(SwsContext *c, const uint8_t **in, int *instrides,
136 int srcSliceY, int srcSliceH,
137 uint8_t **oplanes, int *outstrides)
139 return core_yuv420_rgb(c, in, instrides, srcSliceY, srcSliceH, oplanes,
140 outstrides, ff_bfin_yuv2rgb24_line, 1, 888);
143 static int bfin_yuv420_bgr24(SwsContext *c, const uint8_t **in, int *instrides,
144 int srcSliceY, int srcSliceH,
145 uint8_t **oplanes, int *outstrides)
147 return core_yuv420_rgb(c, in, instrides, srcSliceY, srcSliceH, oplanes,
148 outstrides, ff_bfin_yuv2rgb24_line, 0, 888);
151 static int bfin_yuv420_rgb565(SwsContext *c, const uint8_t **in, int *instrides,
152 int srcSliceY, int srcSliceH,
153 uint8_t **oplanes, int *outstrides)
155 return core_yuv420_rgb(c, in, instrides, srcSliceY, srcSliceH, oplanes,
156 outstrides, ff_bfin_yuv2rgb565_line, 1, 565);
159 static int bfin_yuv420_bgr565(SwsContext *c, const uint8_t **in, int *instrides,
160 int srcSliceY, int srcSliceH,
161 uint8_t **oplanes, int *outstrides)
163 return core_yuv420_rgb(c, in, instrides, srcSliceY, srcSliceH, oplanes,
164 outstrides, ff_bfin_yuv2rgb565_line, 0, 565);
167 av_cold SwsFunc ff_yuv2rgb_init_bfin(SwsContext *c)
171 switch (c->dstFormat) {
172 case AV_PIX_FMT_RGB555:
173 f = bfin_yuv420_rgb555;
175 case AV_PIX_FMT_BGR555:
176 f = bfin_yuv420_bgr555;
178 case AV_PIX_FMT_RGB565:
179 f = bfin_yuv420_rgb565;
181 case AV_PIX_FMT_BGR565:
182 f = bfin_yuv420_bgr565;
184 case AV_PIX_FMT_RGB24:
185 f = bfin_yuv420_rgb24;
187 case AV_PIX_FMT_BGR24:
188 f = bfin_yuv420_bgr24;
194 av_log(c, AV_LOG_INFO, "BlackFin accelerated color space converter %s\n",
195 av_get_pix_fmt_name(c->dstFormat));