[FFmpeg-trac] #5785(swresample:new): swr_drop_output misbehaviour

[FFmpeg]

#5785: swr_drop_output misbehaviour
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             Reporter:  richardpl   |                    Owner:
                 Type:  defect      |                   Status:  new
             Priority:  normal      |                Component:  swresample
              Version:  git-master  |               Resolution:
             Keywords:              |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |
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Comment (by michael):

 The example seems buggy, it doesnt produce a sinewave that repeats every
 1000 samples so droping 1000 will not produce a smooth output. If that is
 corrected with the patch below the output seems fine.
 Or maybe iam missunderstanding the issue ?

 {{{
 diff --git a/doc/examples/resampling_audio.c
 b/doc/examples/resampling_audio.c
 index 2dd2513..a698275 100644
 --- a/doc/examples/resampling_audio.c
 +++ b/doc/examples/resampling_audio.c
 @@ -66,7 +66,7 @@ static void fill_samples(double *dst, int nb_samples,
 int nb_channels, int sampl
  {
      int i, j;
      double tincr = 1.0 / sample_rate, *dstp = dst;
 -    const double c = 2 * M_PI * 440.0;
 +    const double c = 2 * M_PI * 48000 / 100; // or 48000 / 1000

      /* generate sin tone with 440Hz frequency and duplicated channels */
      for (i = 0; i < nb_samples; i++) {
 }}}

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Ticket URL: <https://trac.ffmpeg.org/ticket/5785#comment:1>
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