[FFmpeg-devel] fate: Add test for Musepack SV8 decoding

While the FATE suite contains a sample file for Musepack 8, it did not
use it to test the decoder; it is only used in the mpc8-demux test that
tests the demuxer via streamcopy. Therefore this commit adds an actual
encoder test.

The test uses the framecrc output, because Musepack SV8 is an encoder
that returns multiple frames for a single packet, so that timing
information in the test output is valueable. Output seeking has been
used in order to limit the size of the ref file as well as to test this
codepath for the first time.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
---
For some reason sometimes the timestamps are off by 1; i.e. the
timestamps of the packets with timestamps in the range 28151-71927 are
all one too small. But the error does not accumulate.

 tests/fate/mpc.mak       |   5 ++
 tests/ref/fate/musepack8 | 141 +++++++++++++++++++++++++++++++++++++++
 2 files changed, 146 insertions(+)
 create mode 100644 tests/ref/fate/musepack8

Andreas Rheinhardt (12020-10-30):
> While the FATE suite contains a sample file for Musepack 8, it did not
> use it to test the decoder; it is only used in the mpc8-demux test that
> tests the demuxer via streamcopy. Therefore this commit adds an actual
> encoder test.
> 
> The test uses the framecrc output, because Musepack SV8 is an encoder
> that returns multiple frames for a single packet, so that timing
> information in the test output is valueable. Output seeking has been
> used in order to limit the size of the ref file as well as to test this
> codepath for the first time.
> 
> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
> ---
> For some reason sometimes the timestamps are off by 1; i.e. the
> timestamps of the packets with timestamps in the range 28151-71927 are
> all one too small. But the error does not accumulate.
> 
>  tests/fate/mpc.mak       |   5 ++
>  tests/ref/fate/musepack8 | 141 +++++++++++++++++++++++++++++++++++++++
>  2 files changed, 146 insertions(+)
>  create mode 100644 tests/ref/fate/musepack8
> 
> diff --git a/tests/fate/mpc.mak b/tests/fate/mpc.mak
> index 294dffeabf..f15198077d 100644
> --- a/tests/fate/mpc.mak
> +++ b/tests/fate/mpc.mak
> @@ -9,5 +9,10 @@ fate-musepack7: CMD = pcm -i $(TARGET_SAMPLES)/musepack/inside-mp7.mpc
>  fate-musepack7: CMP = oneoff
>  fate-musepack7: REF = $(SAMPLES)/musepack/inside-mp7.pcm
>  
> +FATE_MPC-$(call ALLYES, FILE_PROTOCOL MPC8_DEMUXER MPC8_DECODER  \
> +                        ARESAMPLE_FILTER PCM_S16LE_ENCODER  \
> +			FRAMECRC_MUXER PIPE_PROTOCOL) += fate-musepack8

> +fate-musepack8: CMD = framecrc -auto_conversion_filters -i $(TARGET_SAMPLES)/musepack/inside-mp8.mpc -ss 8.4 -c:a pcm_s16le

Do not enable auto conversions unless absolutely necessary: insert
aresample where needed if at all.

> +
>  FATE_SAMPLES_AVCONV += $(FATE_MPC-yes)
>  fate-mpc: $(FATE_MPC-yes)
> diff --git a/tests/ref/fate/musepack8 b/tests/ref/fate/musepack8
> new file mode 100644
> index 0000000000..d7343c0367
> --- /dev/null
> +++ b/tests/ref/fate/musepack8
> @@ -0,0 +1,141 @@
> +#tb 0: 1/44100
> +#media_type 0: audio
> +#codec_id 0: pcm_s16le
> +#sample_rate 0: 44100
> +#channel_layout 0: 3
> +#channel_layout_name 0: stereo
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Regards,