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| author | Michael Niedermayer <michaelni@gmx.at> | 2005-12-29 15:46:23 +0000 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2005-12-29 15:46:23 +0000 |
| commit | 88e51e1fb5b9ed342d77049330980279b1505e52 (patch) | |
| tree | 9f2058ba9580237d2a74ce59708170a47db5e28a /libavcodec | |
| parent | 58f7833e8e5972e5021319ae26b5a82d01a11be7 (diff) | |
| download | ffmpeg-88e51e1fb5b9ed342d77049330980279b1505e52.tar.gz | |
second try of improved lambda/qp guessing for motion estimation RD in first pass
Originally committed as revision 4785 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec')
| -rw-r--r-- | libavcodec/mpegvideo.c | 9 | ||||
| -rw-r--r-- | libavcodec/mpegvideo.h | 1 |
2 files changed, 5 insertions, 5 deletions
diff --git a/libavcodec/mpegvideo.c b/libavcodec/mpegvideo.c index 731a502c25..f08dbb8138 100644 --- a/libavcodec/mpegvideo.c +++ b/libavcodec/mpegvideo.c @@ -1594,6 +1594,7 @@ void MPV_frame_end(MpegEncContext *s) emms_c(); s->last_pict_type = s->pict_type; + s->last_lambda_for[s->pict_type]= s->current_picture_ptr->quality; if(s->pict_type!=B_TYPE){ s->last_non_b_pict_type= s->pict_type; } @@ -2204,7 +2205,7 @@ static int estimate_best_b_count(MpegEncContext *s){ int is_p= i % (j+1) == j || i==s->max_b_frames; input[i+1].pict_type= is_p ? P_TYPE : B_TYPE; - input[i+1].quality= s->rc_context.last_qscale_for[input[i+1].pict_type]; + input[i+1].quality= s->last_lambda_for[input[i+1].pict_type]; out_size = avcodec_encode_video(c, outbuf, outbuf_size, &input[i+1]); rd += (out_size * lambda2) >> FF_LAMBDA_SHIFT; } @@ -5398,12 +5399,10 @@ static void encode_picture(MpegEncContext *s, int picture_number) estimate_qp(s, 1); ff_get_2pass_fcode(s); }else if(!(s->flags & CODEC_FLAG_QSCALE)){ - RateControlContext *rcc= &s->rc_context; - if(s->pict_type==B_TYPE) - s->lambda= rcc->last_qscale_for[s->pict_type]; + s->lambda= s->last_lambda_for[s->pict_type]; else - s->lambda= rcc->last_qscale_for[rcc->last_non_b_pict_type]; + s->lambda= s->last_lambda_for[s->last_non_b_pict_type]; update_qscale(s); } diff --git a/libavcodec/mpegvideo.h b/libavcodec/mpegvideo.h index ce8e6e2939..b36133a639 100644 --- a/libavcodec/mpegvideo.h +++ b/libavcodec/mpegvideo.h @@ -374,6 +374,7 @@ typedef struct MpegEncContext { int last_non_b_pict_type; ///< used for mpeg4 gmc b-frames & ratecontrol int dropable; int frame_rate_index; + int last_lambda_for[5]; ///< last lambda for a specific pict type /* motion compensation */ int unrestricted_mv; ///< mv can point outside of the coded picture |