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/*
* Copyright (c) 2002 Dieter Shirley
*
* 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 "dsputil.h"
#include "mpegvideo.h"
#include <time.h>
#ifdef HAVE_ALTIVEC
#include "dsputil_altivec.h"
#endif
extern int dct_quantize_altivec(MpegEncContext *s,
DCTELEM *block, int n,
int qscale, int *overflow);
extern void dct_unquantize_h263_altivec(MpegEncContext *s,
DCTELEM *block, int n, int qscale);
extern void idct_put_altivec(uint8_t *dest, int line_size, int16_t *block);
extern void idct_add_altivec(uint8_t *dest, int line_size, int16_t *block);
void MPV_common_init_ppc(MpegEncContext *s)
{
#ifdef HAVE_ALTIVEC
if (has_altivec())
{
if (s->avctx->lowres==0)
{
if ((s->avctx->idct_algo == FF_IDCT_AUTO) ||
(s->avctx->idct_algo == FF_IDCT_ALTIVEC))
{
s->dsp.idct_put = idct_put_altivec;
s->dsp.idct_add = idct_add_altivec;
s->dsp.idct_permutation_type = FF_TRANSPOSE_IDCT_PERM;
}
}
// Test to make sure that the dct required alignments are met.
if ((((long)(s->q_intra_matrix) & 0x0f) != 0) ||
(((long)(s->q_inter_matrix) & 0x0f) != 0))
{
av_log(s->avctx, AV_LOG_INFO, "Internal Error: q-matrix blocks must be 16-byte aligned "
"to use Altivec DCT. Reverting to non-altivec version.\n");
return;
}
if (((long)(s->intra_scantable.inverse) & 0x0f) != 0)
{
av_log(s->avctx, AV_LOG_INFO, "Internal Error: scan table blocks must be 16-byte aligned "
"to use Altivec DCT. Reverting to non-altivec version.\n");
return;
}
if ((s->avctx->dct_algo == FF_DCT_AUTO) ||
(s->avctx->dct_algo == FF_DCT_ALTIVEC))
{
#if 0 /* seems to cause trouble under some circumstances */
s->dct_quantize = dct_quantize_altivec;
#endif
s->dct_unquantize_h263_intra = dct_unquantize_h263_altivec;
s->dct_unquantize_h263_inter = dct_unquantize_h263_altivec;
}
} else
#endif
{
/* Non-AltiVec PPC optimisations here */
}
}
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