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
36 #include "swscale_internal.h"
39 #define L1CODE __attribute__ ((l1_text))
44 extern void ff_bfin_yuv2rgb555_line (uint8_t *Y, uint8_t *U, uint8_t *V, uint8_t *out,
45 int w, uint32_t *coeffs) L1CODE;
47 extern void ff_bfin_yuv2rgb565_line (uint8_t *Y, uint8_t *U, uint8_t *V, uint8_t *out,
48 int w, uint32_t *coeffs) L1CODE;
50 extern void ff_bfin_yuv2rgb24_line (uint8_t *Y, uint8_t *U, uint8_t *V, uint8_t *out,
51 int w, uint32_t *coeffs) L1CODE;
53 typedef void (* ltransform_t)(uint8_t *Y, uint8_t *U, uint8_t *V, uint8_t *out,
54 int w, uint32_t *coeffs);
57 static void bfin_prepare_coefficients (SwsContext *c, int rgb, int masks)
60 oy = c->yOffset&0xffff;
61 oy = oy >> 3; // keep everything U8.0 for offset calculation
63 c->oc = 128*0x01010101U;
64 c->oy = oy*0x01010101U;
66 /* copy 64bit vector coeffs down to 32bit vector coeffs */
84 c->rmask = 0x001f * 0x00010001U;
85 c->gmask = 0x03e0 * 0x00010001U;
86 c->bmask = 0x7c00 * 0x00010001U;
87 } else if (masks == 565) {
88 c->rmask = 0x001f * 0x00010001U;
89 c->gmask = 0x07e0 * 0x00010001U;
90 c->bmask = 0xf800 * 0x00010001U;
94 static int core_yuv420_rgb (SwsContext *c,
95 uint8_t **in, int *instrides,
96 int srcSliceY, int srcSliceH,
97 uint8_t **oplanes, int *outstrides,
98 ltransform_t lcscf, int rgb, int masks)
100 uint8_t *py,*pu,*pv,*op;
101 int w = instrides[0];
102 int h2 = srcSliceH>>1;
105 bfin_prepare_coefficients (c, rgb, masks);
111 op = oplanes[0] + srcSliceY*outstrides[0];
115 lcscf (py, pu, pv, op, w, &c->oy);
120 lcscf (py, pu, pv, op, w, &c->oy);
132 static int bfin_yuv420_rgb555 (SwsContext *c,
133 uint8_t **in, int *instrides,
134 int srcSliceY, int srcSliceH,
135 uint8_t **oplanes, int *outstrides)
137 return core_yuv420_rgb (c, in, instrides, srcSliceY, srcSliceH, oplanes, outstrides,
138 ff_bfin_yuv2rgb555_line, 1, 555);
141 static int bfin_yuv420_bgr555 (SwsContext *c,
142 uint8_t **in, int *instrides,
143 int srcSliceY, int srcSliceH,
144 uint8_t **oplanes, int *outstrides)
146 return core_yuv420_rgb (c, in, instrides, srcSliceY, srcSliceH, oplanes, outstrides,
147 ff_bfin_yuv2rgb555_line, 0, 555);
150 static int bfin_yuv420_rgb24 (SwsContext *c,
151 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, outstrides,
156 ff_bfin_yuv2rgb24_line, 1, 888);
159 static int bfin_yuv420_bgr24 (SwsContext *c,
160 uint8_t **in, int *instrides,
161 int srcSliceY, int srcSliceH,
162 uint8_t **oplanes, int *outstrides)
164 return core_yuv420_rgb (c, in, instrides, srcSliceY, srcSliceH, oplanes, outstrides,
165 ff_bfin_yuv2rgb24_line, 0, 888);
168 static int bfin_yuv420_rgb565 (SwsContext *c,
169 uint8_t **in, int *instrides,
170 int srcSliceY, int srcSliceH,
171 uint8_t **oplanes, int *outstrides)
173 return core_yuv420_rgb (c, in, instrides, srcSliceY, srcSliceH, oplanes, outstrides,
174 ff_bfin_yuv2rgb565_line, 1, 565);
177 static int bfin_yuv420_bgr565 (SwsContext *c,
178 uint8_t **in, int *instrides,
179 int srcSliceY, int srcSliceH,
180 uint8_t **oplanes, int *outstrides)
182 return core_yuv420_rgb (c, in, instrides, srcSliceY, srcSliceH, oplanes, outstrides,
183 ff_bfin_yuv2rgb565_line, 0, 565);
187 SwsFunc ff_bfin_yuv2rgb_get_func_ptr (SwsContext *c)
191 switch(c->dstFormat) {
192 case PIX_FMT_RGB555: f = bfin_yuv420_rgb555; break;
193 case PIX_FMT_BGR555: f = bfin_yuv420_bgr555; break;
194 case PIX_FMT_RGB565: f = bfin_yuv420_rgb565; break;
195 case PIX_FMT_BGR565: f = bfin_yuv420_bgr565; break;
196 case PIX_FMT_RGB24: f = bfin_yuv420_rgb24; break;
197 case PIX_FMT_BGR24: f = bfin_yuv420_bgr24; break;
202 av_log(c, AV_LOG_INFO, "BlackFin accelerated color space converter %s\n",
203 sws_format_name (c->dstFormat));