* Copyright (c) 2000,2001 Fabrice Bellard
* Copyright (c) 2002-2010 Michael Niedermayer <michaelni@gmx.at>
*
- * This file is part of Libav.
+ * This file is part of FFmpeg.
*
- * Libav is free software; you can redistribute it and/or
+ * FFmpeg 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 2.1 of the License, or (at your option) any later version.
*
- * Libav is distributed in the hope that it will be useful,
+ * FFmpeg 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 Libav; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
- * encodes the dc value.
+ * Encode the dc value.
* @param n block index (0-3 are luma, 4-5 are chroma)
*/
static inline void mpeg4_encode_dc(PutBitContext * s, int level, int n)
}
/**
- * encodes a 8x8 block
+ * Encode an 8x8 block.
* @param n block index (0-3 are luma, 4-5 are chroma)
*/
static inline void mpeg4_encode_block(MpegEncContext * s, DCTELEM * block, int n, int intra_dc,
}
}
+static inline int get_b_cbp(MpegEncContext * s, DCTELEM block[6][64],
+ int motion_x, int motion_y, int mb_type)
+{
+ int cbp = 0, i;
+
+ if (s->flags & CODEC_FLAG_CBP_RD) {
+ int score = 0;
+ const int lambda = s->lambda2 >> (FF_LAMBDA_SHIFT - 6);
+
+ for (i = 0; i < 6; i++)
+ if (s->coded_score[i] < 0) {
+ score += s->coded_score[i];
+ cbp |= 1 << (5 - i);
+ }
+
+ if (cbp) {
+ int zero_score = -6;
+ if ((motion_x | motion_y | s->dquant | mb_type) == 0)
+ zero_score -= 4; //2*MV + mb_type + cbp bit
+
+ zero_score *= lambda;
+ if (zero_score <= score)
+ cbp = 0;
+ }
+
+ for (i = 0; i < 6; i++) {
+ if (s->block_last_index[i] >= 0 && ((cbp >> (5 - i)) & 1) == 0) {
+ s->block_last_index[i] = -1;
+ s->dsp.clear_block(s->block[i]);
+ }
+ }
+ } else {
+ for (i = 0; i < 6; i++) {
+ if (s->block_last_index[i] >= 0)
+ cbp |= 1 << (5 - i);
+ }
+ }
+ return cbp;
+}
+
//FIXME this is duplicated to h263.c
static const int dquant_code[5]= {1,0,9,2,3};
x= s->mb_x*16;
y= s->mb_y*16;
- if(x+16 > s->width) x= s->width-16;
- if(y+16 > s->height) y= s->height-16;
offset= x + y*s->linesize;
p_pic = s->new_picture.f.data[0] + offset;
b_pic = pic->f.data[0] + offset;
if (pic->f.type != FF_BUFFER_TYPE_SHARED)
b_pic+= INPLACE_OFFSET;
- diff= s->dsp.sad[0](NULL, p_pic, b_pic, s->linesize, 16);
+
+ if(x+16 > s->width || y+16 > s->height){
+ int x1,y1;
+ int xe= FFMIN(16, s->width - x);
+ int ye= FFMIN(16, s->height- y);
+ diff=0;
+ for(y1=0; y1<ye; y1++){
+ for(x1=0; x1<xe; x1++){
+ diff+= FFABS(p_pic[x1+y1*s->linesize] - b_pic[x1+y1*s->linesize]);
+ }
+ }
+ diff= diff*256/(xe*ye);
+ }else{
+ diff= s->dsp.sad[0](NULL, p_pic, b_pic, s->linesize, 16);
+ }
if(diff>s->qscale*70){ //FIXME check that 70 is optimal
s->mb_skipped=0;
break;
ff_mpeg4_init_direct_mv(s);
}else{
s->last_time_base= s->time_base;
- s->time_base= s->time/s->avctx->time_base.den;
+ s->time_base= FFUDIV(s->time, s->avctx->time_base.den);
}
}
if(s->reordered_input_picture[1])
time = FFMIN(time, s->reordered_input_picture[1]->f.pts);
time= time*s->avctx->time_base.num;
+ s->last_time_base= FFUDIV(time, s->avctx->time_base.den);
- seconds= time/s->avctx->time_base.den;
- minutes= seconds/60; seconds %= 60;
- hours= minutes/60; minutes %= 60;
- hours%=24;
+ seconds= FFUDIV(time, s->avctx->time_base.den);
+ minutes= FFUDIV(seconds, 60); seconds = FFUMOD(seconds, 60);
+ hours = FFUDIV(minutes, 60); minutes = FFUMOD(minutes, 60);
+ hours = FFUMOD(hours , 24);
put_bits(&s->pb, 5, hours);
put_bits(&s->pb, 6, minutes);
put_bits(&s->pb, 1, !!(s->flags&CODEC_FLAG_CLOSED_GOP));
put_bits(&s->pb, 1, 0); //broken link == NO
- s->last_time_base= time / s->avctx->time_base.den;
-
ff_mpeg4_stuffing(&s->pb);
}
put_bits(&s->pb, 16, VOP_STARTCODE); /* vop header */
put_bits(&s->pb, 2, s->pict_type - 1); /* pict type: I = 0 , P = 1 */
- assert(s->time>=0);
- time_div= s->time/s->avctx->time_base.den;
- time_mod= s->time%s->avctx->time_base.den;
+ time_div= FFUDIV(s->time, s->avctx->time_base.den);
+ time_mod= FFUMOD(s->time, s->avctx->time_base.den);
time_incr= time_div - s->last_time_base;
assert(time_incr >= 0);
while(time_incr--)
projects / ffmpeg / blobdiff