mirror of
https://github.com/FFmpeg/FFmpeg.git
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(commit by michael)
mmx & mmx2 quantizer c dct permutation bugfix dont copy input on intra only encodings if it can be avoided dont draw edges on intra only stuff Originally committed as revision 281 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer
parent
580b82fa24
commit
2f349de286
@ -49,6 +49,12 @@ UINT8 zigzag_direct[64] = {
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53, 60, 61, 54, 47, 55, 62, 63
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};
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/* not permutated inverse zigzag_direct + 1 for MMX quantizer */
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UINT16 __align8 inv_zigzag_direct16[64];
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/* not permutated zigzag_direct for MMX quantizer */
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UINT8 zigzag_direct_noperm[64];
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UINT8 ff_alternate_horizontal_scan[64] = {
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0, 1, 2, 3, 8, 9, 16, 17,
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10, 11, 4, 5, 6, 7, 15, 14,
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@ -83,6 +89,42 @@ static UINT8 simple_mmx_permutation[64]={
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0x32, 0x3A, 0x36, 0x3B, 0x33, 0x3E, 0x37, 0x3F,
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};
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/* a*inverse[b]>>32 == a/b for all 0<=a<=65536 && 2<=b<=255 */
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UINT32 inverse[256]={
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0, 4294967295U,2147483648U,1431655766, 1073741824, 858993460, 715827883, 613566757,
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536870912, 477218589, 429496730, 390451573, 357913942, 330382100, 306783379, 286331154,
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268435456, 252645136, 238609295, 226050911, 214748365, 204522253, 195225787, 186737709,
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178956971, 171798692, 165191050, 159072863, 153391690, 148102321, 143165577, 138547333,
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134217728, 130150525, 126322568, 122713352, 119304648, 116080198, 113025456, 110127367,
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107374183, 104755300, 102261127, 99882961, 97612894, 95443718, 93368855, 91382283,
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89478486, 87652394, 85899346, 84215046, 82595525, 81037119, 79536432, 78090315,
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76695845, 75350304, 74051161, 72796056, 71582789, 70409300, 69273667, 68174085,
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67108864, 66076420, 65075263, 64103990, 63161284, 62245903, 61356676, 60492498,
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59652324, 58835169, 58040099, 57266231, 56512728, 55778797, 55063684, 54366675,
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53687092, 53024288, 52377650, 51746594, 51130564, 50529028, 49941481, 49367441,
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48806447, 48258060, 47721859, 47197443, 46684428, 46182445, 45691142, 45210183,
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44739243, 44278014, 43826197, 43383509, 42949673, 42524429, 42107523, 41698712,
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41297763, 40904451, 40518560, 40139882, 39768216, 39403370, 39045158, 38693400,
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38347923, 38008561, 37675152, 37347542, 37025581, 36709123, 36398028, 36092163,
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35791395, 35495598, 35204650, 34918434, 34636834, 34359739, 34087043, 33818641,
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33554432, 33294321, 33038210, 32786010, 32537632, 32292988, 32051995, 31814573,
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31580642, 31350127, 31122952, 30899046, 30678338, 30460761, 30246249, 30034737,
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29826162, 29620465, 29417585, 29217465, 29020050, 28825284, 28633116, 28443493,
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28256364, 28071682, 27889399, 27709467, 27531842, 27356480, 27183338, 27012373,
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26843546, 26676816, 26512144, 26349493, 26188825, 26030105, 25873297, 25718368,
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25565282, 25414008, 25264514, 25116768, 24970741, 24826401, 24683721, 24542671,
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24403224, 24265352, 24129030, 23994231, 23860930, 23729102, 23598722, 23469767,
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23342214, 23216040, 23091223, 22967740, 22845571, 22724695, 22605092, 22486740,
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22369622, 22253717, 22139007, 22025474, 21913099, 21801865, 21691755, 21582751,
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21474837, 21367997, 21262215, 21157475, 21053762, 20951060, 20849356, 20748635,
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20648882, 20550083, 20452226, 20355296, 20259280, 20164166, 20069941, 19976593,
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19884108, 19792477, 19701685, 19611723, 19522579, 19434242, 19346700, 19259944,
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19173962, 19088744, 19004281, 18920561, 18837576, 18755316, 18673771, 18592933,
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18512791, 18433337, 18354562, 18276457, 18199014, 18122225, 18046082, 17970575,
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17895698, 17821442, 17747799, 17674763, 17602325, 17530479, 17459217, 17388532,
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17318417, 17248865, 17179870, 17111424, 17043522, 16976156, 16909321, 16843010,
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};
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/* used to skip zeros at the end */
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UINT8 zigzag_end[64];
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@ -515,6 +557,9 @@ void dsputil_init(void)
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else
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for(i=0; i<64; i++) permutation[i]=i;
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for(i=0; i<64; i++) inv_zigzag_direct16[zigzag_direct[i]]= i+1;
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for(i=0; i<64; i++) zigzag_direct_noperm[i]= zigzag_direct[i];
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if (use_permuted_idct) {
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/* permute for IDCT */
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for(i=0;i<64;i++) {
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@ -22,9 +22,16 @@
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#include "../dsputil.h"
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#include "../mpegvideo.h"
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#include "../avcodec.h"
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#include "../mangle.h"
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extern UINT8 zigzag_end[64];
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extern void (*draw_edges)(UINT8 *buf, int wrap, int width, int height, int w);
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extern int (*dct_quantize)(MpegEncContext *s, DCTELEM *block, int n, int qscale);
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extern UINT8 zigzag_direct_noperm[64];
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extern UINT16 inv_zigzag_direct16[64];
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extern UINT32 inverse[256];
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#if 0
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@ -252,7 +259,7 @@ static void dct_unquantize_mpeg1_mmx(MpegEncContext *s,
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}
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} else {
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i = 0;
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unquant_even:
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// unquant_even:
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quant_matrix = s->non_intra_matrix;
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/* Align on 4 elements boundary */
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while(i&7)
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@ -411,6 +418,20 @@ static void draw_edges_mmx(UINT8 *buf, int wrap, int width, int height, int w)
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}
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}
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static volatile int esp_temp;
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void unused_var_warning_killer(){
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esp_temp++;
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}
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#undef HAVE_MMX2
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#define RENAME(a) a ## _MMX
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#include "mpegvideo_mmx_template.c"
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#define HAVE_MMX2
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#undef RENAME
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#define RENAME(a) a ## _MMX2
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#include "mpegvideo_mmx_template.c"
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void MPV_common_init_mmx(MpegEncContext *s)
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{
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@ -421,5 +442,11 @@ void MPV_common_init_mmx(MpegEncContext *s)
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s->dct_unquantize = dct_unquantize_mpeg1_mmx;
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draw_edges = draw_edges_mmx;
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if(mm_flags & MM_MMXEXT){
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dct_quantize= dct_quantize_MMX2;
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}else{
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dct_quantize= dct_quantize_MMX;
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}
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}
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}
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201
libavcodec/i386/mpegvideo_mmx_template.c
Normal file
201
libavcodec/i386/mpegvideo_mmx_template.c
Normal file
@ -0,0 +1,201 @@
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/*
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Copyright (C) 2002 Michael Niedermayer <michaelni@gmx.at>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program 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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#undef SPREADW
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#undef PMAXW
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#ifdef HAVE_MMX2
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#define SPREADW(a) "pshufw $0, " #a ", " #a " \n\t"
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#define PMAXW(a,b) "pmaxsw " #a ", " #b " \n\t"
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#else
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#define SPREADW(a) \
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"punpcklwd " #a ", " #a " \n\t"\
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"punpcklwd " #a ", " #a " \n\t"
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#define PMAXW(a,b) \
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"psubusw " #a ", " #b " \n\t"\
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"paddw " #a ", " #b " \n\t"
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#endif
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static int RENAME(dct_quantize)(MpegEncContext *s,
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DCTELEM *block, int n,
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int qscale)
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{
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int i, level, last_non_zero_p1, q;
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const UINT16 *qmat;
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static __align8 INT16 temp_block[64];
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int minLevel, maxLevel;
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if(s->avctx!=NULL && s->avctx->codec->id==CODEC_ID_MPEG4){
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/* mpeg4 */
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minLevel= -2048;
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maxLevel= 2047;
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}else if(s->out_format==FMT_MPEG1){
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/* mpeg1 */
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minLevel= -255;
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maxLevel= 255;
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}else{
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/* h263 / msmpeg4 */
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minLevel= -128;
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maxLevel= 127;
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}
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av_fdct (block);
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if (s->mb_intra) {
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int dummy;
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if (n < 4)
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q = s->y_dc_scale;
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else
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q = s->c_dc_scale;
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/* note: block[0] is assumed to be positive */
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#if 1
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asm volatile (
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"xorl %%edx, %%edx \n\t"
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"mul %%ebx \n\t"
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: "=d" (temp_block[0]), "=a"(dummy)
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: "a" (block[0] + (q >> 1)), "b" (inverse[q])
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);
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#else
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asm volatile (
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"xorl %%edx, %%edx \n\t"
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"divw %%bx \n\t"
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"movzwl %%ax, %%eax \n\t"
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: "=a" (temp_block[0])
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: "a" (block[0] + (q >> 1)), "b" (q)
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: "%edx"
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);
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#endif
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// temp_block[0] = (block[0] + (q >> 1)) / q;
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i = 1;
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last_non_zero_p1 = 1;
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if (s->out_format == FMT_H263) {
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qmat = s->q_non_intra_matrix16;
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} else {
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qmat = s->q_intra_matrix16;
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}
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for(i=1;i<4;i++) {
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level = block[i] * qmat[i];
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level = level / (1 << (QMAT_SHIFT_MMX - 3));
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/* XXX: currently, this code is not optimal. the range should be:
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mpeg1: -255..255
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mpeg2: -2048..2047
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h263: -128..127
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mpeg4: -2048..2047
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*/
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if (level > maxLevel)
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level = maxLevel;
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else if (level < minLevel)
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level = minLevel;
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temp_block[i] = level;
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if(level)
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if(last_non_zero_p1 < inv_zigzag_direct16[i]) last_non_zero_p1= inv_zigzag_direct16[i];
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block[i]=0;
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}
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} else {
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i = 0;
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last_non_zero_p1 = 0;
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qmat = s->q_non_intra_matrix16;
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}
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asm volatile( /* XXX: small rounding bug, but it shouldnt matter */
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"movd %3, %%mm3 \n\t"
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SPREADW(%%mm3)
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"movd %4, %%mm4 \n\t"
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SPREADW(%%mm4)
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"movd %5, %%mm5 \n\t"
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SPREADW(%%mm5)
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"pxor %%mm7, %%mm7 \n\t"
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"movd %%eax, %%mm2 \n\t"
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SPREADW(%%mm2)
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"movl %6, %%eax \n\t"
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".balign 16 \n\t"
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"1: \n\t"
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"movq (%1, %%eax), %%mm0 \n\t"
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"movq (%2, %%eax), %%mm1 \n\t"
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"movq %%mm0, %%mm6 \n\t"
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"psraw $15, %%mm6 \n\t"
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"pmulhw %%mm0, %%mm1 \n\t"
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"psubsw %%mm6, %%mm1 \n\t"
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#ifdef HAVE_MMX2
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"pminsw %%mm3, %%mm1 \n\t"
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"pmaxsw %%mm4, %%mm1 \n\t"
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#else
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"paddsw %%mm3, %%mm1 \n\t"
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"psubusw %%mm4, %%mm1 \n\t"
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"paddsw %%mm5, %%mm1 \n\t"
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#endif
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"movq %%mm1, (%8, %%eax) \n\t"
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"pcmpeqw %%mm7, %%mm1 \n\t"
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"movq (%7, %%eax), %%mm0 \n\t"
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"movq %%mm7, (%1, %%eax) \n\t"
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"pandn %%mm0, %%mm1 \n\t"
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PMAXW(%%mm1, %%mm2)
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"addl $8, %%eax \n\t"
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" js 1b \n\t"
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"movq %%mm2, %%mm0 \n\t"
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"psrlq $32, %%mm2 \n\t"
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PMAXW(%%mm0, %%mm2)
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"movq %%mm2, %%mm0 \n\t"
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"psrlq $16, %%mm2 \n\t"
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PMAXW(%%mm0, %%mm2)
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"movd %%mm2, %%eax \n\t"
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"movzbl %%al, %%eax \n\t"
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: "+a" (last_non_zero_p1)
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: "r" (block+64), "r" (qmat+64),
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#ifdef HAVE_MMX2
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"m" (maxLevel), "m" (minLevel), "m" (0 /* dummy */), "g" (2*i - 128),
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#else
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"m" (0x7FFF - maxLevel), "m" (0x7FFF -maxLevel + minLevel), "m" (minLevel), "g" (2*i - 128),
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#endif
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"r" (inv_zigzag_direct16+64), "r" (temp_block+64)
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);
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// last_non_zero_p1=64;
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/* permute for IDCT */
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asm volatile(
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"movl %0, %%eax \n\t"
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"pushl %%ebp \n\t"
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"movl %%esp, " MANGLE(esp_temp) "\n\t"
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"1: \n\t"
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"movzbl (%1, %%eax), %%ebx \n\t"
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"movzbl 1(%1, %%eax), %%ebp \n\t"
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"movw (%2, %%ebx, 2), %%cx \n\t"
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"movw (%2, %%ebp, 2), %%sp \n\t"
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"movzbl " MANGLE(permutation) "(%%ebx), %%ebx\n\t"
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"movzbl " MANGLE(permutation) "(%%ebp), %%ebp\n\t"
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"movw %%cx, (%3, %%ebx, 2) \n\t"
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"movw %%sp, (%3, %%ebp, 2) \n\t"
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"addl $2, %%eax \n\t"
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" js 1b \n\t"
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"movl " MANGLE(esp_temp) ", %%esp\n\t"
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"popl %%ebp \n\t"
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:
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: "g" (-last_non_zero_p1), "d" (zigzag_direct_noperm+last_non_zero_p1), "S" (temp_block), "D" (block)
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: "%eax", "%ebx", "%ecx"
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);
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/*
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for(i=0; i<last_non_zero_p1; i++)
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{
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int j= zigzag_direct_noperm[i];
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block[block_permute_op(j)]= temp_block[j];
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}
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*/
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//block_permute(block);
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return last_non_zero_p1 - 1;
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}
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@ -35,12 +35,10 @@ static void dct_unquantize_mpeg1_c(MpegEncContext *s,
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DCTELEM *block, int n, int qscale);
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static void dct_unquantize_h263_c(MpegEncContext *s,
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DCTELEM *block, int n, int qscale);
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static int dct_quantize(MpegEncContext *s, DCTELEM *block, int n, int qscale);
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static int dct_quantize_mmx(MpegEncContext *s,
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DCTELEM *block, int n,
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int qscale);
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static void draw_edges_c(UINT8 *buf, int wrap, int width, int height, int w);
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static int dct_quantize_c(MpegEncContext *s, DCTELEM *block, int n, int qscale);
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int (*dct_quantize)(MpegEncContext *s, DCTELEM *block, int n, int qscale)= dct_quantize_c;
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void (*draw_edges)(UINT8 *buf, int wrap, int width, int height, int w)= draw_edges_c;
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#define EDGE_WIDTH 16
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@ -74,29 +72,29 @@ int motion_estimation_method = ME_LOG;
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extern UINT8 zigzag_end[64];
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/* XXX: should use variable shift ? */
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#define QMAT_SHIFT_MMX 19
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#define QMAT_SHIFT 25
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static void convert_matrix(int *qmat, const UINT16 *quant_matrix, int qscale)
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static void convert_matrix(int *qmat, UINT16 *qmat16, const UINT16 *quant_matrix, int qscale)
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{
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int i;
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if (av_fdct == jpeg_fdct_ifast) {
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for(i=0;i<64;i++) {
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/* 16 <= qscale * quant_matrix[i] <= 7905 */
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/* 19952 <= aanscales[i] * qscale * quant_matrix[i] <= 249205026 */
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/* 19952 <= aanscales[i] * qscale * quant_matrix[i] <= 249205026 */
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/* (1<<36)/19952 >= (1<<36)/(aanscales[i] * qscale * quant_matrix[i]) >= (1<<36)/249205026 */
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/* 3444240 >= (1<<36)/(aanscales[i] * qscale * quant_matrix[i]) >= 275 */
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|
||||
qmat[i] = (int)((UINT64_C(1) << (QMAT_SHIFT + 11)) /
|
||||
(aanscales[i] * qscale * quant_matrix[i]));
|
||||
qmat[block_permute_op(i)] = (int)((UINT64_C(1) << (QMAT_SHIFT + 11)) /
|
||||
(aanscales[i] * qscale * quant_matrix[block_permute_op(i)]));
|
||||
}
|
||||
} else {
|
||||
for(i=0;i<64;i++) {
|
||||
/* We can safely suppose that 16 <= quant_matrix[i] <= 255
|
||||
So 16 <= qscale * quant_matrix[i] <= 7905
|
||||
so (1 << QMAT_SHIFT) / 16 >= qmat[i] >= (1 << QMAT_SHIFT) / 7905
|
||||
So 16 <= qscale * quant_matrix[i] <= 7905
|
||||
so (1<<19) / 16 >= (1<<19) / (qscale * quant_matrix[i]) >= (1<<19) / 7905
|
||||
so 32768 >= (1<<19) / (qscale * quant_matrix[i]) >= 67
|
||||
*/
|
||||
qmat[i] = (1 << QMAT_SHIFT_MMX) / (qscale * quant_matrix[i]);
|
||||
qmat[i] = (1 << QMAT_SHIFT_MMX) / (qscale * quant_matrix[i]);
|
||||
qmat16[i] = (1 << QMAT_SHIFT_MMX) / (qscale * quant_matrix[block_permute_op(i)]);
|
||||
}
|
||||
}
|
||||
}
|
||||
@ -418,7 +416,7 @@ void MPV_frame_start(MpegEncContext *s)
|
||||
void MPV_frame_end(MpegEncContext *s)
|
||||
{
|
||||
/* draw edge for correct motion prediction if outside */
|
||||
if (s->pict_type != B_TYPE) {
|
||||
if (s->pict_type != B_TYPE && !s->intra_only) {
|
||||
if(s->avctx==NULL || s->avctx->codec->id!=CODEC_ID_MPEG4){
|
||||
draw_edges(s->current_picture[0], s->linesize, s->mb_width*16, s->mb_height*16, EDGE_WIDTH);
|
||||
draw_edges(s->current_picture[1], s->linesize/2, s->mb_width*8, s->mb_height*8, EDGE_WIDTH/2);
|
||||
@ -457,7 +455,7 @@ int MPV_encode_picture(AVCodecContext *avctx,
|
||||
avctx->key_frame = (s->pict_type == I_TYPE);
|
||||
|
||||
MPV_frame_start(s);
|
||||
|
||||
|
||||
for(i=0;i<3;i++) {
|
||||
UINT8 *src = pict->data[i];
|
||||
UINT8 *dest = s->current_picture[i];
|
||||
@ -472,11 +470,15 @@ int MPV_encode_picture(AVCodecContext *avctx,
|
||||
h >>= 1;
|
||||
}
|
||||
|
||||
for(j=0;j<h;j++) {
|
||||
memcpy(dest, src, w);
|
||||
dest += dest_wrap;
|
||||
src += src_wrap;
|
||||
}
|
||||
if(s->intra_only && dest_wrap==src_wrap){
|
||||
s->current_picture[i] = pict->data[i];
|
||||
}else {
|
||||
for(j=0;j<h;j++) {
|
||||
memcpy(dest, src, w);
|
||||
dest += dest_wrap;
|
||||
src += src_wrap;
|
||||
}
|
||||
}
|
||||
s->new_picture[i] = s->current_picture[i];
|
||||
}
|
||||
|
||||
@ -873,10 +875,10 @@ static void encode_picture(MpegEncContext *s, int picture_number)
|
||||
s->intra_matrix[0] = default_intra_matrix[0];
|
||||
for(i=1;i<64;i++)
|
||||
s->intra_matrix[i] = (default_intra_matrix[i] * s->qscale) >> 3;
|
||||
convert_matrix(s->q_intra_matrix, s->intra_matrix, 8);
|
||||
convert_matrix(s->q_intra_matrix, s->q_intra_matrix16, s->intra_matrix, 8);
|
||||
} else {
|
||||
convert_matrix(s->q_intra_matrix, s->intra_matrix, s->qscale);
|
||||
convert_matrix(s->q_non_intra_matrix, s->non_intra_matrix, s->qscale);
|
||||
convert_matrix(s->q_intra_matrix, s->q_intra_matrix16, s->intra_matrix, s->qscale);
|
||||
convert_matrix(s->q_non_intra_matrix, s->q_non_intra_matrix16, s->non_intra_matrix, s->qscale);
|
||||
}
|
||||
|
||||
switch(s->out_format) {
|
||||
@ -1011,14 +1013,8 @@ static void encode_picture(MpegEncContext *s, int picture_number)
|
||||
s->y_dc_scale = 8;
|
||||
s->c_dc_scale = 8;
|
||||
}
|
||||
|
||||
for(i=0;i<6;i++) {
|
||||
int last_index;
|
||||
if (av_fdct == jpeg_fdct_ifast)
|
||||
last_index = dct_quantize(s, s->block[i], i, s->qscale);
|
||||
else
|
||||
last_index = dct_quantize_mmx(s, s->block[i], i, s->qscale);
|
||||
s->block_last_index[i] = last_index;
|
||||
s->block_last_index[i] = dct_quantize(s, s->block[i], i, s->qscale);
|
||||
}
|
||||
|
||||
/* huffman encode */
|
||||
@ -1060,7 +1056,7 @@ static void encode_picture(MpegEncContext *s, int picture_number)
|
||||
// fprintf(stderr,"\nNumber of GOB: %d", s->gob_number);
|
||||
}
|
||||
|
||||
static int dct_quantize(MpegEncContext *s,
|
||||
static int dct_quantize_c(MpegEncContext *s,
|
||||
DCTELEM *block, int n,
|
||||
int qscale)
|
||||
{
|
||||
@ -1157,85 +1153,7 @@ static int dct_quantize(MpegEncContext *s,
|
||||
level = maxLevel;
|
||||
else if (level < minLevel)
|
||||
level = minLevel;
|
||||
block[j] = level;
|
||||
last_non_zero = i;
|
||||
} else {
|
||||
block[j] = 0;
|
||||
}
|
||||
}
|
||||
return last_non_zero;
|
||||
}
|
||||
|
||||
static int dct_quantize_mmx(MpegEncContext *s,
|
||||
DCTELEM *block, int n,
|
||||
int qscale)
|
||||
{
|
||||
int i, j, level, last_non_zero, q;
|
||||
const int *qmat;
|
||||
int minLevel, maxLevel;
|
||||
|
||||
if(s->avctx!=NULL && s->avctx->codec->id==CODEC_ID_MPEG4){
|
||||
/* mpeg4 */
|
||||
minLevel= -2048;
|
||||
maxLevel= 2047;
|
||||
}else if(s->out_format==FMT_MPEG1){
|
||||
/* mpeg1 */
|
||||
minLevel= -255;
|
||||
maxLevel= 255;
|
||||
}else{
|
||||
/* h263 / msmpeg4 */
|
||||
minLevel= -128;
|
||||
maxLevel= 127;
|
||||
}
|
||||
|
||||
av_fdct (block);
|
||||
|
||||
/* we need this permutation so that we correct the IDCT
|
||||
permutation. will be moved into DCT code */
|
||||
block_permute(block);
|
||||
|
||||
if (s->mb_intra) {
|
||||
if (n < 4)
|
||||
q = s->y_dc_scale;
|
||||
else
|
||||
q = s->c_dc_scale;
|
||||
|
||||
/* note: block[0] is assumed to be positive */
|
||||
block[0] = (block[0] + (q >> 1)) / q;
|
||||
i = 1;
|
||||
last_non_zero = 0;
|
||||
if (s->out_format == FMT_H263) {
|
||||
qmat = s->q_non_intra_matrix;
|
||||
} else {
|
||||
qmat = s->q_intra_matrix;
|
||||
}
|
||||
} else {
|
||||
i = 0;
|
||||
last_non_zero = -1;
|
||||
qmat = s->q_non_intra_matrix;
|
||||
}
|
||||
|
||||
for(;i<64;i++) {
|
||||
j = zigzag_direct[i];
|
||||
level = block[j];
|
||||
level = level * qmat[j];
|
||||
/* XXX: slight error for the low range. Test should be equivalent to
|
||||
(level <= -(1 << (QMAT_SHIFT_MMX - 3)) || level >= (1 <<
|
||||
(QMAT_SHIFT_MMX - 3)))
|
||||
*/
|
||||
if (((level << (31 - (QMAT_SHIFT_MMX - 3))) >> (31 - (QMAT_SHIFT_MMX - 3))) !=
|
||||
level) {
|
||||
level = level / (1 << (QMAT_SHIFT_MMX - 3));
|
||||
/* XXX: currently, this code is not optimal. the range should be:
|
||||
mpeg1: -255..255
|
||||
mpeg2: -2048..2047
|
||||
h263: -128..127
|
||||
mpeg4: -2048..2047
|
||||
*/
|
||||
if (level > maxLevel)
|
||||
level = maxLevel;
|
||||
else if (level < minLevel)
|
||||
level = minLevel;
|
||||
block[j] = level;
|
||||
last_non_zero = i;
|
||||
} else {
|
||||
|
||||
@ -30,6 +30,9 @@ enum OutputFormat {
|
||||
|
||||
#define MPEG_BUF_SIZE (16 * 1024)
|
||||
|
||||
#define QMAT_SHIFT_MMX 19
|
||||
#define QMAT_SHIFT 25
|
||||
|
||||
typedef struct MpegEncContext {
|
||||
struct AVCodecContext *avctx;
|
||||
/* the following parameters must be initialized before encoding */
|
||||
@ -120,6 +123,9 @@ typedef struct MpegEncContext {
|
||||
/* precomputed matrix (combine qscale and DCT renorm) */
|
||||
int q_intra_matrix[64];
|
||||
int q_non_intra_matrix[64];
|
||||
/* identical to the above but for MMX & these are not permutated */
|
||||
UINT16 __align8 q_intra_matrix16[64] ;
|
||||
UINT16 __align8 q_non_intra_matrix16[64];
|
||||
int block_last_index[6]; /* last non zero coefficient in block */
|
||||
|
||||
void *opaque; /* private data for the user */
|
||||
|
||||
Loading…
Reference in New Issue
Block a user