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
31 #include "libavutil/pixdesc.h"
32 #include "libswscale/rgb2rgb.h"
33 #include "libswscale/swscale.h"
34 #include "libswscale/swscale_internal.h"
36 #if defined(__FDPIC__) && CONFIG_SRAM
37 #define L1CODE __attribute__ ((l1_text))
42 void ff_bfin_yuv2rgb555_line(uint8_t *Y, uint8_t *U, uint8_t *V, uint8_t *out,
43 int w, uint32_t *coeffs) L1CODE;
45 void ff_bfin_yuv2rgb565_line(uint8_t *Y, uint8_t *U, uint8_t *V, uint8_t *out,
46 int w, uint32_t *coeffs) L1CODE;
48 void ff_bfin_yuv2rgb24_line(uint8_t *Y, uint8_t *U, uint8_t *V, uint8_t *out,
49 int w, uint32_t *coeffs) L1CODE;
51 typedef void (* ltransform)(uint8_t *Y, uint8_t *U, uint8_t *V, uint8_t *out,
52 int w, uint32_t *coeffs);
55 static void bfin_prepare_coefficients(SwsContext *c, int rgb, int masks)
58 oy = c->yOffset&0xffff;
59 oy = oy >> 3; // keep everything U8.0 for offset calculation
61 c->oc = 128*0x01010101U;
62 c->oy = oy*0x01010101U;
64 /* copy 64bit vector coeffs down to 32bit vector coeffs */
82 c->rmask = 0x001f * 0x00010001U;
83 c->gmask = 0x03e0 * 0x00010001U;
84 c->bmask = 0x7c00 * 0x00010001U;
85 } else if (masks == 565) {
86 c->rmask = 0x001f * 0x00010001U;
87 c->gmask = 0x07e0 * 0x00010001U;
88 c->bmask = 0xf800 * 0x00010001U;
92 static int core_yuv420_rgb(SwsContext *c,
93 uint8_t **in, int *instrides,
94 int srcSliceY, int srcSliceH,
95 uint8_t **oplanes, int *outstrides,
96 ltransform lcscf, int rgb, int masks)
98 uint8_t *py,*pu,*pv,*op;
100 int h2 = srcSliceH>>1;
103 bfin_prepare_coefficients(c, rgb, masks);
109 op = oplanes[0] + srcSliceY*outstrides[0];
113 lcscf(py, pu, pv, op, w, &c->oy);
118 lcscf(py, pu, pv, op, w, &c->oy);
130 static int bfin_yuv420_rgb555(SwsContext *c,
131 uint8_t **in, int *instrides,
132 int srcSliceY, int srcSliceH,
133 uint8_t **oplanes, int *outstrides)
135 return core_yuv420_rgb(c, in, instrides, srcSliceY, srcSliceH, oplanes,
136 outstrides, ff_bfin_yuv2rgb555_line, 1, 555);
139 static int bfin_yuv420_bgr555(SwsContext *c,
140 uint8_t **in, int *instrides,
141 int srcSliceY, int srcSliceH,
142 uint8_t **oplanes, int *outstrides)
144 return core_yuv420_rgb(c, in, instrides, srcSliceY, srcSliceH, oplanes,
145 outstrides, ff_bfin_yuv2rgb555_line, 0, 555);
148 static int bfin_yuv420_rgb24(SwsContext *c,
149 uint8_t **in, int *instrides,
150 int srcSliceY, int srcSliceH,
151 uint8_t **oplanes, int *outstrides)
153 return core_yuv420_rgb(c, in, instrides, srcSliceY, srcSliceH, oplanes,
154 outstrides, ff_bfin_yuv2rgb24_line, 1, 888);
157 static int bfin_yuv420_bgr24(SwsContext *c,
158 uint8_t **in, int *instrides,
159 int srcSliceY, int srcSliceH,
160 uint8_t **oplanes, int *outstrides)
162 return core_yuv420_rgb(c, in, instrides, srcSliceY, srcSliceH, oplanes,
163 outstrides, ff_bfin_yuv2rgb24_line, 0, 888);
166 static int bfin_yuv420_rgb565(SwsContext *c,
167 uint8_t **in, int *instrides,
168 int srcSliceY, int srcSliceH,
169 uint8_t **oplanes, int *outstrides)
171 return core_yuv420_rgb(c, in, instrides, srcSliceY, srcSliceH, oplanes,
172 outstrides, ff_bfin_yuv2rgb565_line, 1, 565);
175 static int bfin_yuv420_bgr565(SwsContext *c,
176 uint8_t **in, int *instrides,
177 int srcSliceY, int srcSliceH,
178 uint8_t **oplanes, int *outstrides)
180 return core_yuv420_rgb(c, in, instrides, srcSliceY, srcSliceH, oplanes,
181 outstrides, ff_bfin_yuv2rgb565_line, 0, 565);
185 SwsFunc ff_yuv2rgb_get_func_ptr_bfin(SwsContext *c)
189 switch(c->dstFormat) {
190 case PIX_FMT_RGB555: f = bfin_yuv420_rgb555; break;
191 case PIX_FMT_BGR555: f = bfin_yuv420_bgr555; break;
192 case PIX_FMT_RGB565: f = bfin_yuv420_rgb565; break;
193 case PIX_FMT_BGR565: f = bfin_yuv420_bgr565; break;
194 case PIX_FMT_RGB24: f = bfin_yuv420_rgb24; break;
195 case PIX_FMT_BGR24: f = bfin_yuv420_bgr24; break;
200 av_log(c, AV_LOG_INFO, "BlackFin accelerated color space converter %s\n",
201 av_get_pix_fmt_name(c->dstFormat));