1/*
2 * Copyright (C) 2007 Marc Hoffman <marc.hoffman@analog.com>
3 *
4 * Blackfin software video scaler operations
5 *
6 * This file is part of FFmpeg.
7 *
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
12 *
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 */
22
23#include <stdio.h>
24#include <stdlib.h>
25#include <string.h>
26#include <inttypes.h>
27#include <assert.h>
28#include "config.h"
29#include <unistd.h>
30#include "rgb2rgb.h"
31#include "swscale.h"
32#include "swscale_internal.h"
33
34#ifdef __FDPIC__
35#define L1CODE __attribute__ ((l1_text))
36#else
37#define L1CODE
38#endif
39
40int ff_bfin_uyvytoyv12 (const uint8_t *src, uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
41                        long width, long height,
42                        long lumStride, long chromStride, long srcStride) L1CODE;
43
44int ff_bfin_yuyvtoyv12 (const uint8_t *src, uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
45                        long width, long height,
46                        long lumStride, long chromStride, long srcStride) L1CODE;
47
48static int uyvytoyv12_unscaled (SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
49                                int srcSliceH, uint8_t* dst[], int dstStride[])
50{
51    uint8_t *dsty = dst[0] + dstStride[0]*srcSliceY;
52    uint8_t *dstu = dst[1] + dstStride[1]*srcSliceY/2;
53    uint8_t *dstv = dst[2] + dstStride[2]*srcSliceY/2;
54    uint8_t *ip   = src[0] + srcStride[0]*srcSliceY;
55    int w         = dstStride[0];
56
57    ff_bfin_uyvytoyv12 (ip, dsty, dstu, dstv, w, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);
58
59    return srcSliceH;
60}
61
62static int yuyvtoyv12_unscaled (SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
63                                int srcSliceH, uint8_t* dst[], int dstStride[])
64{
65    uint8_t *dsty = dst[0] + dstStride[0]*srcSliceY;
66    uint8_t *dstu = dst[1] + dstStride[1]*srcSliceY/2;
67    uint8_t *dstv = dst[2] + dstStride[2]*srcSliceY/2;
68    uint8_t *ip   = src[0] + srcStride[0]*srcSliceY;
69    int w         = dstStride[0];
70
71    ff_bfin_yuyvtoyv12 (ip, dsty, dstu, dstv, w, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);
72
73    return srcSliceH;
74}
75
76
77void ff_bfin_get_unscaled_swscale (SwsContext *c)
78{
79    SwsFunc swScale = c->swScale;
80    if (c->flags & SWS_CPU_CAPS_BFIN)
81        if (c->dstFormat == PIX_FMT_YUV420P)
82            if (c->srcFormat == PIX_FMT_UYVY422) {
83                av_log (NULL, AV_LOG_VERBOSE, "selecting Blackfin optimized uyvytoyv12_unscaled\n");
84                c->swScale = uyvytoyv12_unscaled;
85            }
86        if (c->dstFormat == PIX_FMT_YUV420P)
87            if (c->srcFormat == PIX_FMT_YUYV422) {
88                av_log (NULL, AV_LOG_VERBOSE, "selecting Blackfin optimized yuyvtoyv12_unscaled\n");
89                c->swScale = yuyvtoyv12_unscaled;
90            }
91}
92