mirror of https://git.ffmpeg.org/ffmpeg.git
92 lines
3.0 KiB
C
92 lines
3.0 KiB
C
/*
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* Copyright (c) 2002 Dieter Shirley
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "../dsputil.h"
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#include "../mpegvideo.h"
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#include <time.h>
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#ifdef HAVE_ALTIVEC
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#include "dsputil_altivec.h"
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#endif
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extern int dct_quantize_altivec(MpegEncContext *s,
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DCTELEM *block, int n,
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int qscale, int *overflow);
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extern void dct_unquantize_h263_altivec(MpegEncContext *s,
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DCTELEM *block, int n, int qscale);
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extern void idct_put_altivec(uint8_t *dest, int line_size, int16_t *block);
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extern void idct_add_altivec(uint8_t *dest, int line_size, int16_t *block);
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void MPV_common_init_ppc(MpegEncContext *s)
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{
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#ifdef HAVE_ALTIVEC
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if (has_altivec())
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{
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if (s->avctx->lowres==0)
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{
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if ((s->avctx->idct_algo == FF_IDCT_AUTO) ||
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(s->avctx->idct_algo == FF_IDCT_ALTIVEC))
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{
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s->dsp.idct_put = idct_put_altivec;
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s->dsp.idct_add = idct_add_altivec;
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#ifndef ALTIVEC_USE_REFERENCE_C_CODE
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s->dsp.idct_permutation_type = FF_TRANSPOSE_IDCT_PERM;
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#else /* ALTIVEC_USE_REFERENCE_C_CODE */
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s->dsp.idct_permutation_type = FF_NO_IDCT_PERM;
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#endif /* ALTIVEC_USE_REFERENCE_C_CODE */
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}
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}
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// Test to make sure that the dct required alignments are met.
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if ((((long)(s->q_intra_matrix) & 0x0f) != 0) ||
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(((long)(s->q_inter_matrix) & 0x0f) != 0))
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{
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av_log(s->avctx, AV_LOG_INFO, "Internal Error: q-matrix blocks must be 16-byte aligned "
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"to use Altivec DCT. Reverting to non-altivec version.\n");
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return;
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}
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if (((long)(s->intra_scantable.inverse) & 0x0f) != 0)
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{
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av_log(s->avctx, AV_LOG_INFO, "Internal Error: scan table blocks must be 16-byte aligned "
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"to use Altivec DCT. Reverting to non-altivec version.\n");
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return;
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}
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if ((s->avctx->dct_algo == FF_DCT_AUTO) ||
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(s->avctx->dct_algo == FF_DCT_ALTIVEC))
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{
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#if 0 /* seems to cause trouble under some circumstances */
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s->dct_quantize = dct_quantize_altivec;
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#endif
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s->dct_unquantize_h263_intra = dct_unquantize_h263_altivec;
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s->dct_unquantize_h263_inter = dct_unquantize_h263_altivec;
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}
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} else
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#endif
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{
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/* Non-AltiVec PPC optimisations here */
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}
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}
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