PeerStreamer

/*

 * Copyright (C) 2007 Marc Hoffman <marc.hoffman@analog.com>

 *

 * Blackfin software video scaler operations

 *

 * This file is part of FFmpeg.

 *

 * FFmpeg is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public

 * License as published by the Free Software Foundation; either

 * version 2.1 of the License, or (at your option) any later version.

 *

 * FFmpeg is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public

 * License along with FFmpeg; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

 */

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <inttypes.h>

#include <assert.h>

#include "config.h"

#ifdef HAVE_MALLOC_H

#include <malloc.h>

#endif

#include <unistd.h>

#include "rgb2rgb.h"

#include "swscale.h"

#include "swscale_internal.h"

#ifdef __FDPIC__

#define L1CODE __attribute__ ((l1_text))

#else

#define L1CODE

#endif

extern int ff_bfin_uyvytoyv12 (const uint8_t *src, uint8_t *ydst, uint8_t *udst, uint8_t *vdst,

                               long width, long height,

                               long lumStride, long chromStride, long srcStride) L1CODE;

extern int ff_bfin_yuyvtoyv12 (const uint8_t *src, uint8_t *ydst, uint8_t *udst, uint8_t *vdst,

                               long width, long height,

                               long lumStride, long chromStride, long srcStride) L1CODE;

static int uyvytoyv12_unscaled (SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

                                int srcSliceH, uint8_t* dst[], int dstStride[])

{

    uint8_t *dsty = dst[0] + dstStride[0]*srcSliceY;

    uint8_t *dstu = dst[1] + dstStride[1]*srcSliceY/2;

    uint8_t *dstv = dst[2] + dstStride[2]*srcSliceY/2;

    uint8_t *ip   = src[0] + srcStride[0]*srcSliceY;

    int w         = dstStride[0];

    ff_bfin_uyvytoyv12 (ip, dsty, dstu, dstv, w, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);

    return srcSliceH;

}

static int yuyvtoyv12_unscaled (SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

                                int srcSliceH, uint8_t* dst[], int dstStride[])

{

    uint8_t *dsty = dst[0] + dstStride[0]*srcSliceY;

    uint8_t *dstu = dst[1] + dstStride[1]*srcSliceY/2;

    uint8_t *dstv = dst[2] + dstStride[2]*srcSliceY/2;

    uint8_t *ip   = src[0] + srcStride[0]*srcSliceY;

    int w         = dstStride[0];

    ff_bfin_yuyvtoyv12 (ip, dsty, dstu, dstv, w, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);

    return srcSliceH;

}

void ff_bfin_get_unscaled_swscale (SwsContext *c)

{

    SwsFunc swScale = c->swScale;

    if (c->flags & SWS_CPU_CAPS_BFIN)

        if (c->dstFormat == PIX_FMT_YUV420P)

            if (c->srcFormat == PIX_FMT_UYVY422) {

                av_log (NULL, AV_LOG_VERBOSE, "selecting Blackfin optimized uyvytoyv12_unscaled\n");

                c->swScale = uyvytoyv12_unscaled;

            }

        if (c->dstFormat == PIX_FMT_YUV420P)

            if (c->srcFormat == PIX_FMT_YUYV422) {

                av_log (NULL, AV_LOG_VERBOSE, "selecting Blackfin optimized yuyvtoyv12_unscaled\n");

                c->swScale = yuyvtoyv12_unscaled;

            }

}