/* * 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)) { fprintf(stderr, "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) { fprintf(stderr, "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)) { s->dct_quantize = dct_quantize_altivec; s->dct_unquantize_h263 = dct_unquantize_h263_altivec; } } else #endif { /* Non-AltiVec PPC optimisations here */ } }