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87 lines
2.9 KiB
87 lines
2.9 KiB
/* |
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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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s->dsp.idct_permutation_type = FF_TRANSPOSE_IDCT_PERM; |
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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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