mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-07 11:13:41 +02:00
87 lines
3.0 KiB
C
87 lines
3.0 KiB
C
/*
|
|
* Copyright (c) 2002 Dieter Shirley
|
|
*
|
|
* This library 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 of the License, or (at your option) any later version.
|
|
*
|
|
* This library 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 this library; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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->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;
|
|
#ifndef ALTIVEC_USE_REFERENCE_C_CODE
|
|
s->dsp.idct_permutation_type = FF_TRANSPOSE_IDCT_PERM;
|
|
#else /* ALTIVEC_USE_REFERENCE_C_CODE */
|
|
s->dsp.idct_permutation_type = FF_NO_IDCT_PERM;
|
|
#endif /* ALTIVEC_USE_REFERENCE_C_CODE */
|
|
}
|
|
|
|
// 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 */
|
|
}
|
|
}
|
|
|