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authorMichael Niedermayer <michael@niedermayer.cc>2015-11-11 16:49:21 +0100
committerMichael Niedermayer <michael@niedermayer.cc>2015-11-11 18:41:01 +0100
commit3de8521667e38613bc0214f8959665c87d471d49 (patch)
treeda027f00be0b24c496d6ef6d766fd898eae83ab1
parentedf5e88eac83807f6f80b1d18c57810c31c4d6fa (diff)
downloadffmpeg-3de8521667e38613bc0214f8959665c87d471d49.tar.gz
swresample/resample: increase precision for compensation
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc> (cherry picked from commit 351e625d60165be67c362af6e96ead6c9262623f) Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
-rw-r--r--libswresample/resample.c4
-rw-r--r--tests/fate/libswresample.mak8
2 files changed, 8 insertions, 4 deletions
diff --git a/libswresample/resample.c b/libswresample/resample.c
index 554fd7b5f7..8f3eb41ad9 100644
--- a/libswresample/resample.c
+++ b/libswresample/resample.c
@@ -231,6 +231,10 @@ static ResampleContext *resample_init(ResampleContext *c, int out_rate, int in_r
c->compensation_distance= 0;
if(!av_reduce(&c->src_incr, &c->dst_incr, out_rate, in_rate * (int64_t)phase_count, INT32_MAX/2))
goto error;
+ while (c->dst_incr < (1<<20) && c->src_incr < (1<<20)) {
+ c->dst_incr *= 2;
+ c->src_incr *= 2;
+ }
c->ideal_dst_incr = c->dst_incr;
c->dst_incr_div = c->dst_incr / c->src_incr;
c->dst_incr_mod = c->dst_incr % c->src_incr;
diff --git a/tests/fate/libswresample.mak b/tests/fate/libswresample.mak
index e48170dc49..064c0f614f 100644
--- a/tests/fate/libswresample.mak
+++ b/tests/fate/libswresample.mak
@@ -366,16 +366,16 @@ fate-swr-resample_async-$(3)-$(1)-$(2): FUZZ = 0.1
fate-swr-resample_async-$(3)-$(1)-$(2): REF = tests/data/asynth-$(1)-1.wav
endef
-fate-swr-resample_async-fltp-44100-8000: CMP_TARGET = 4031.48
+fate-swr-resample_async-fltp-44100-8000: CMP_TARGET = 4020.62
fate-swr-resample_async-fltp-44100-8000: SIZE_TOLERANCE = 529200 - 20310
-fate-swr-resample_async-fltp-8000-44100: CMP_TARGET = 11185.34
+fate-swr-resample_async-fltp-8000-44100: CMP_TARGET = 11186.69
fate-swr-resample_async-fltp-8000-44100: SIZE_TOLERANCE = 96000 - 20344
-fate-swr-resample_async-s16p-44100-8000: CMP_TARGET = 4031.59
+fate-swr-resample_async-s16p-44100-8000: CMP_TARGET = 4020.73
fate-swr-resample_async-s16p-44100-8000: SIZE_TOLERANCE = 529200 - 20310
-fate-swr-resample_async-s16p-8000-44100: CMP_TARGET = 11185.65
+fate-swr-resample_async-s16p-8000-44100: CMP_TARGET = 11187.01
fate-swr-resample_async-s16p-8000-44100: SIZE_TOLERANCE = 96000 - 20344
$(call CROSS_TEST,$(SAMPLERATES),ARESAMPLE,s16p,s16le,s16)