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author | Leon van Stuivenberg <leonvs@iae.nl> | 2002-10-03 20:57:19 +0000 |
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committer | Michael Niedermayer <michaelni@gmx.at> | 2002-10-03 20:57:19 +0000 |
commit | 5917d17cb79af27681209a745492bdccc37d2f76 (patch) | |
tree | fc485a567406369162ff76ef6b14bf769a1177aa /libavcodec/ps2/mpegvideo_mmi.c | |
parent | a46a3ce416ce058c9553fb4fd6865fbf623fa64b (diff) | |
download | ffmpeg-streaming-5917d17cb79af27681209a745492bdccc37d2f76.zip ffmpeg-streaming-5917d17cb79af27681209a745492bdccc37d2f76.tar.gz |
ps2 optimizations update patch by (Leon van Stuivenberg <leonvs at iae dot nl>)
Originally committed as revision 996 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/ps2/mpegvideo_mmi.c')
-rw-r--r-- | libavcodec/ps2/mpegvideo_mmi.c | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/libavcodec/ps2/mpegvideo_mmi.c b/libavcodec/ps2/mpegvideo_mmi.c new file mode 100644 index 0000000..f12640c --- /dev/null +++ b/libavcodec/ps2/mpegvideo_mmi.c @@ -0,0 +1,100 @@ +/* + * Copyright (c) 2000,2001 Fabrice Bellard. + * + * 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 + * + * MMI optimization by Leon van Stuivenberg <leonvs@iae.nl> + */ + +#include "../dsputil.h" +#include "../mpegvideo.h" +#include "../avcodec.h" + +void ff_mmi_idct_put(UINT8 *dest, int line_size, DCTELEM *block); +void ff_mmi_idct_add(UINT8 *dest, int line_size, DCTELEM *block); + + +static void dct_unquantize_h263_mmi(MpegEncContext *s, + DCTELEM *block, int n, int qscale) +{ + int level=0, qmul, qadd; + int nCoeffs; + + assert(s->block_last_index[n]>=0); + + qadd = (qscale - 1) | 1; + qmul = qscale << 1; + + if (s->mb_intra) { + if (!s->h263_aic) { + if (n < 4) + level = block[0] * s->y_dc_scale; + else + level = block[0] * s->c_dc_scale; + }else { + qadd = 0; + level = block[0]; + } + nCoeffs= 63; //does not allways use zigzag table + } else { + nCoeffs= s->intra_scantable.raster_end[ s->block_last_index[n] ]; + } + + asm volatile( + "add $14, $0, %3 \n\t" + "pcpyld $8, %0, %0 \n\t" + "pcpyh $8, $8 \n\t" //r8 = qmul + "pcpyld $9, %1, %1 \n\t" + "pcpyh $9, $9 \n\t" //r9 = qadd + ".p2align 2 \n\t" + "1: \n\t" + "lq $10, 0($14) \n\t" //r10 = level + "addi $14, $14, 16 \n\t" //block+=8 + "addi %2, %2, -8 \n\t" + "pcgth $11, $0, $10 \n\t" //r11 = level < 0 ? -1 : 0 + "pcgth $12, $10, $0 \n\t" //r12 = level > 0 ? -1 : 0 + "por $12, $11, $12 \n\t" + "pmulth $10, $10, $8 \n\t" + "paddh $13, $9, $11 \n\t" + "pxor $13, $13, $11 \n\t" //r13 = level < 0 ? -qadd : qadd + "pmfhl.uw $11 \n\t" + "pinteh $10, $11, $10 \n\t" //r10 = level * qmul + "paddh $10, $10, $13 \n\t" + "pand $10, $10, $12 \n\t" + "sq $10, -16($14) \n\t" + "bgez %2, 1b \n\t" + :: "r"(qmul), "r" (qadd), "r" (nCoeffs), "r" (block) : "$8", "$9", "$10", "$11", "$12", "$13", "$14", "memory" ); + + if(s->mb_intra) + block[0]= level; +} + + +void MPV_common_init_mmi(MpegEncContext *s) +{ + int i; +// const int dct_algo = s->avctx->dct_algo; + const int idct_algo= s->avctx->idct_algo; + + if(idct_algo==FF_IDCT_AUTO){ + s->idct_put= ff_mmi_idct_put; + s->idct_add= ff_mmi_idct_add; + for(i=0; i<64; i++) + s->idct_permutation[i]= (i & 0x38) | ((i & 6) >> 1) | ((i & 1) << 2); + } + s->dct_unquantize_h263 = dct_unquantize_h263_mmi; +} + + |