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 "libswscale/swscale_internal.h"
30 #if defined(__FDPIC__) && CONFIG_SRAM
31 #define L1CODE __attribute__((l1_text))
36 void ff_bfin_yuv2rgb555_line(const uint8_t *Y, const uint8_t *U,
37 const uint8_t *V, uint8_t *out,
38 int w, uint32_t *coeffs) L1CODE;
40 void ff_bfin_yuv2rgb565_line(const uint8_t *Y, const uint8_t *U,
41 const uint8_t *V, uint8_t *out,
42 int w, uint32_t *coeffs) L1CODE;
44 void ff_bfin_yuv2rgb24_line(const uint8_t *Y, const uint8_t *U,
45 const uint8_t *V, uint8_t *out,
46 int w, uint32_t *coeffs) L1CODE;
48 typedef void (*ltransform)(const uint8_t *Y, const uint8_t *U, const uint8_t *V,
49 uint8_t *out, int w, uint32_t *coeffs);
51 static void bfin_prepare_coefficients(SwsContext *c, int rgb, int masks)
54 oy = c->yOffset & 0xffff;
55 oy = oy >> 3; // keep everything U8.0 for offset calculation
57 c->oc = 128 * 0x01010101U;
58 c->oy = oy * 0x01010101U;
60 /* copy 64bit vector coeffs down to 32bit vector coeffs */
77 c->rmask = 0x001f * 0x00010001U;
78 c->gmask = 0x03e0 * 0x00010001U;
79 c->bmask = 0x7c00 * 0x00010001U;
80 } else if (masks == 565) {
81 c->rmask = 0x001f * 0x00010001U;
82 c->gmask = 0x07e0 * 0x00010001U;
83 c->bmask = 0xf800 * 0x00010001U;
87 static int core_yuv420_rgb(SwsContext *c, const uint8_t **in, int *instrides,
88 int srcSliceY, int srcSliceH, uint8_t **oplanes,
89 int *outstrides, ltransform lcscf,
92 const uint8_t *py, *pu, *pv;
95 int h2 = srcSliceH >> 1;
98 bfin_prepare_coefficients(c, rgb, masks);
101 pu = in[1 + (1 ^ rgb)];
102 pv = in[1 + (0 ^ rgb)];
104 op = oplanes[0] + srcSliceY * outstrides[0];
106 for (i = 0; i < h2; i++) {
107 lcscf(py, pu, pv, op, w, &c->oy);
112 lcscf(py, pu, pv, op, w, &c->oy);
123 static int bfin_yuv420_rgb555(SwsContext *c, const uint8_t **in, int *instrides,
124 int srcSliceY, int srcSliceH,
125 uint8_t **oplanes, int *outstrides)
127 return core_yuv420_rgb(c, in, instrides, srcSliceY, srcSliceH, oplanes,
128 outstrides, ff_bfin_yuv2rgb555_line, 1, 555);
131 static int bfin_yuv420_bgr555(SwsContext *c, const 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, 0, 555);
139 static int bfin_yuv420_rgb24(SwsContext *c, const uint8_t **in, int *instrides,
140 int srcSliceY, int srcSliceH,
141 uint8_t **oplanes, int *outstrides)
143 return core_yuv420_rgb(c, in, instrides, srcSliceY, srcSliceH, oplanes,
144 outstrides, ff_bfin_yuv2rgb24_line, 1, 888);
147 static int bfin_yuv420_bgr24(SwsContext *c, const uint8_t **in, int *instrides,
148 int srcSliceY, int srcSliceH,
149 uint8_t **oplanes, int *outstrides)
151 return core_yuv420_rgb(c, in, instrides, srcSliceY, srcSliceH, oplanes,
152 outstrides, ff_bfin_yuv2rgb24_line, 0, 888);
155 static int bfin_yuv420_rgb565(SwsContext *c, const uint8_t **in, int *instrides,
156 int srcSliceY, int srcSliceH,
157 uint8_t **oplanes, int *outstrides)
159 return core_yuv420_rgb(c, in, instrides, srcSliceY, srcSliceH, oplanes,
160 outstrides, ff_bfin_yuv2rgb565_line, 1, 565);
163 static int bfin_yuv420_bgr565(SwsContext *c, const uint8_t **in, int *instrides,
164 int srcSliceY, int srcSliceH,
165 uint8_t **oplanes, int *outstrides)
167 return core_yuv420_rgb(c, in, instrides, srcSliceY, srcSliceH, oplanes,
168 outstrides, ff_bfin_yuv2rgb565_line, 0, 565);
171 SwsFunc ff_yuv2rgb_get_func_ptr_bfin(SwsContext *c)
175 switch (c->dstFormat) {
176 case AV_PIX_FMT_RGB555:
177 f = bfin_yuv420_rgb555;
179 case AV_PIX_FMT_BGR555:
180 f = bfin_yuv420_bgr555;
182 case AV_PIX_FMT_RGB565:
183 f = bfin_yuv420_rgb565;
185 case AV_PIX_FMT_BGR565:
186 f = bfin_yuv420_bgr565;
188 case AV_PIX_FMT_RGB24:
189 f = bfin_yuv420_rgb24;
191 case AV_PIX_FMT_BGR24:
192 f = bfin_yuv420_bgr24;
198 av_log(c, AV_LOG_INFO, "BlackFin accelerated color space converter %s\n",
199 av_get_pix_fmt_name(c->dstFormat));