swr: set scale for 32->32/24 dither

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
12 years ago · 6bc4e36ba7
parent 449558d34a
commit 6bc4e36ba7
1 changed files with 1 additions and 0 deletions
--- a/libswresample/dither.c
+++ b/libswresample/dither.c
@ -88,6 +88,7 @@ int swri_dither_init(SwrContext *s, enum AVSampleFormat out_fmt, enum AVSampleFo
        if(out_fmt == AV_SAMPLE_FMT_S16) scale = 1.0/(1L<<15);
        if(out_fmt == AV_SAMPLE_FMT_U8 ) scale = 1.0/(1L<< 7);
    }
+    if(in_fmt == AV_SAMPLE_FMT_S32 && out_fmt == AV_SAMPLE_FMT_S32 && (s->dither.output_sample_bits&31)) scale = 1;
    if(in_fmt == AV_SAMPLE_FMT_S32 && out_fmt == AV_SAMPLE_FMT_S16) scale = 1L<<16;
    if(in_fmt == AV_SAMPLE_FMT_S32 && out_fmt == AV_SAMPLE_FMT_U8 ) scale = 1L<<24;
    if(in_fmt == AV_SAMPLE_FMT_S16 && out_fmt == AV_SAMPLE_FMT_U8 ) scale = 1L<<8;