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avcodec/ffv1enc: Store run1start_mul_index instead of computing

There is a special case I missed, its simpler to just store

Michael Niedermayer committed 1 year ago

Commit 226fcc71 parent f334ead1 file · +4 −3Browse files

Unified · Split

libavcodec/ffv1enc.c+4−3
@@ -1268,6 +1268,7 @@ typedef struct RemapEncoderState { · 1267 unmodified lines
12681268 int run1final;
12691269 int64_t run1start_i;
12701270 int64_t run1start_last_val;
1271+ int run1start_mul_index;
12711272 } RemapEncoderState;
12721273
12731274 static inline void copy_state(RemapEncoderState *dst, const RemapEncoderState *src)
@@ -1287,6 +1288,7 @@ static inline void copy_state(RemapEncoderState *dst, const RemapEncoderState *s · 13 unmodified lines
12871288 dst->run1final = src->run1final;
12881289 dst->run1start_i = src->run1start_i;
12891290 dst->run1start_last_val = src->run1start_last_val;
1291+ dst->run1start_mul_index = src->run1start_mul_index;
12901292 }
12911293
12921294 static int encode_float32_remap_segment(FFV1SliceContext *sc,
@@ -1337,6 +1339,7 @@ static int encode_float32_remap_segment(FFV1SliceContext *sc, · 44 unmodified lines
13371339 if (!s.run) {
13381340 s.run1start_i = s.i - 1;
13391341 s.run1start_last_val = s.last_val;
1342+ s.run1start_mul_index= s.current_mul_index;
13401343 }
13411344 if (step == 1) {
13421345 if (s.run1final) {
@@ -1355,9 +1358,7 @@ static int encode_float32_remap_segment(FFV1SliceContext *sc, · 12 unmodified lines
13551358 put_symbol_inline(&s.rc, s.state[s.lu][0], s.run, 0, NULL, NULL);
13561359 s.i = s.run1start_i;
13571360 s.last_val = s.run1start_last_val; // we could compute this instead of storing
1358− av_assert2(s.last_val >= 0 && s.i >= 0); // first state is zero run so we cant have this in a one run and current_mul_index would be -1
1359− if (s.run)
1360− s.current_mul_index = ((s.last_val + 1) * s.mul_count) >> 32;
1361+ s.current_mul_index = s.run1start_mul_index;
13611362 }
13621363 s.run1final ^= 1;
13631364

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