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author | Andreas Rheinhardt <andreas.rheinhardt@outlook.com> | 2021-05-07 22:30:53 +0200 |
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committer | Andreas Rheinhardt <andreas.rheinhardt@outlook.com> | 2022-01-09 09:28:37 +0100 |
commit | 6739bb5a0e749a4936a274ceff7aab2b488393c6 (patch) | |
tree | 867563b53fa911dbfabaef5b1309db593352add3 /libavcodec/h263.c | |
parent | de29d482f9ee8d9cea9c58a1370ab99028adff3f (diff) | |
download | ffmpeg-6739bb5a0e749a4936a274ceff7aab2b488393c6.tar.gz |
avcodec/h263: Move functions only used once to their caller
In this case it means moving ff_h263_pred_dc() resp. ff_h263_pred_acdc()
to ituh263enc.c resp. ituh263dec.c.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Diffstat (limited to 'libavcodec/h263.c')
-rw-r--r-- | libavcodec/h263.c | 128 |
1 files changed, 0 insertions, 128 deletions
diff --git a/libavcodec/h263.c b/libavcodec/h263.c index f8fba3c9f4..b30ffaf878 100644 --- a/libavcodec/h263.c +++ b/libavcodec/h263.c @@ -102,47 +102,6 @@ void ff_h263_update_motion_val(MpegEncContext * s){ } } -int ff_h263_pred_dc(MpegEncContext * s, int n, int16_t **dc_val_ptr) -{ - int x, y, wrap, a, c, pred_dc; - int16_t *dc_val; - - /* find prediction */ - if (n < 4) { - x = 2 * s->mb_x + (n & 1); - y = 2 * s->mb_y + ((n & 2) >> 1); - wrap = s->b8_stride; - dc_val = s->dc_val[0]; - } else { - x = s->mb_x; - y = s->mb_y; - wrap = s->mb_stride; - dc_val = s->dc_val[n - 4 + 1]; - } - /* B C - * A X - */ - a = dc_val[(x - 1) + (y) * wrap]; - c = dc_val[(x) + (y - 1) * wrap]; - - /* No prediction outside GOB boundary */ - if(s->first_slice_line && n!=3){ - if(n!=2) c= 1024; - if(n!=1 && s->mb_x == s->resync_mb_x) a= 1024; - } - /* just DC prediction */ - if (a != 1024 && c != 1024) - pred_dc = (a + c) >> 1; - else if (a != 1024) - pred_dc = a; - else - pred_dc = c; - - /* we assume pred is positive */ - *dc_val_ptr = &dc_val[x + y * wrap]; - return pred_dc; -} - void ff_h263_loop_filter(MpegEncContext * s){ int qp_c; const int linesize = s->linesize; @@ -228,93 +187,6 @@ void ff_h263_loop_filter(MpegEncContext * s){ } } -void ff_h263_pred_acdc(MpegEncContext * s, int16_t *block, int n) -{ - int x, y, wrap, a, c, pred_dc, scale, i; - int16_t *dc_val, *ac_val, *ac_val1; - - /* find prediction */ - if (n < 4) { - x = 2 * s->mb_x + (n & 1); - y = 2 * s->mb_y + (n>> 1); - wrap = s->b8_stride; - dc_val = s->dc_val[0]; - ac_val = s->ac_val[0][0]; - scale = s->y_dc_scale; - } else { - x = s->mb_x; - y = s->mb_y; - wrap = s->mb_stride; - dc_val = s->dc_val[n - 4 + 1]; - ac_val = s->ac_val[n - 4 + 1][0]; - scale = s->c_dc_scale; - } - - ac_val += ((y) * wrap + (x)) * 16; - ac_val1 = ac_val; - - /* B C - * A X - */ - a = dc_val[(x - 1) + (y) * wrap]; - c = dc_val[(x) + (y - 1) * wrap]; - - /* No prediction outside GOB boundary */ - if(s->first_slice_line && n!=3){ - if(n!=2) c= 1024; - if(n!=1 && s->mb_x == s->resync_mb_x) a= 1024; - } - - if (s->ac_pred) { - pred_dc = 1024; - if (s->h263_aic_dir) { - /* left prediction */ - if (a != 1024) { - ac_val -= 16; - for(i=1;i<8;i++) { - block[s->idsp.idct_permutation[i << 3]] += ac_val[i]; - } - pred_dc = a; - } - } else { - /* top prediction */ - if (c != 1024) { - ac_val -= 16 * wrap; - for(i=1;i<8;i++) { - block[s->idsp.idct_permutation[i]] += ac_val[i + 8]; - } - pred_dc = c; - } - } - } else { - /* just DC prediction */ - if (a != 1024 && c != 1024) - pred_dc = (a + c) >> 1; - else if (a != 1024) - pred_dc = a; - else - pred_dc = c; - } - - /* we assume pred is positive */ - block[0]=block[0]*scale + pred_dc; - - if (block[0] < 0) - block[0] = 0; - else - block[0] |= 1; - - /* Update AC/DC tables */ - dc_val[(x) + (y) * wrap] = block[0]; - - /* left copy */ - for(i=1;i<8;i++) - ac_val1[i] = block[s->idsp.idct_permutation[i << 3]]; - /* top copy */ - for(i=1;i<8;i++) - ac_val1[8 + i] = block[s->idsp.idct_permutation[i]]; -} - int16_t *ff_h263_pred_motion(MpegEncContext * s, int block, int dir, int *px, int *py) { |