The csa_tables (which always consist of 32 entries of four byte each,
but the type depends upon whether the decoder is fixed or
floating-point) are currently initialized once during decoder
initialization; yet it turns out that this is actually no benefit: The
code used to initialize these tables takes up 153 (fixed point) and 122
(floating point) bytes when compiled with GCC 9.3 with -O3 on x64, so it
is better to just hardcode these tables.

Essentially the same applies to the is_tables: They have a size of 128B
each and the code to initialize them occupies 149 (fixed point) resp.
140 (floating point) bytes. So hardcode them, too.

To make the origin of the tables clear, references to the code used to
create them have been added.
Signed-off-by: NAndreas Rheinhardt <andreas.rheinhardt@gmail.com>

Simple now that ff_mpadsp_init() and ff_mpa_synth_init_* are thread-safe.
Signed-off-by: NAndreas Rheinhardt <andreas.rheinhardt@gmail.com>

Suggested-by: NPaul B Mahol <onemda@gmail.com>
See: [FFmpeg-devel] [PATCH 1/3] avcodec/fastaudio: Check channels
Signed-off-by: NMichael Niedermayer <michael@niedermayer.cc>

Signed-off-by: NAndreas Rheinhardt <andreas.rheinhardt@gmail.com>

Do this by only keeping the only function pointer from the
AVFloatDSPContext that is needed lateron. This also allows to remove the
decoders' close function.
Signed-off-by: NAndreas Rheinhardt <andreas.rheinhardt@gmail.com>

Express bitfields more simply.
Signed-off-by: NVittorio Giovara <vittorio.giovara@gmail.com>

Signed-off-by: NMichael Niedermayer <michaelni@gmx.at>

The CONFIG_ name-space is set by configure, so its better to use a
different prefix here.
This also unifies the encoder & decoder define that is used
Signed-off-by: NMichael Niedermayer <michaelni@gmx.at>

Deprecate avcodec_decode_audio3().
Implement audio support in avcodec_default_get_buffer().
Implement the new audio decoder API in all audio decoders.

It is called once for each mpegaudio codec that is registered, which adds
significant overhead.

The documentation for CODEC_CAP_PARSE_ONLY and AVCodecContext.parse_only
indicates that they are utilized through avcodec_parse_frame(), which was
never actually implemented.

The correct decoder private context needs to be used.
This fixes mp3on4 playback and seeking in avplay.

This merges the float and fixed-point versions of the compute_antialias
function, fixes invalid array indexing, and eliminates a dead copy of
csa_table.
Signed-off-by: NMans Rullgard <mans@mansr.com>

This separation allows these functions to be used in a cleaner
fashion from other codecs (e.g. qdm2) and simplifies creating
optimised versions of them.
Signed-off-by: NMans Rullgard <mans@mansr.com>

This function is not needed since 721d6f2d removed the DCT table
allocations for the configuration used here.
Signed-off-by: NMans Rullgard <mans@mansr.com>

Signed-off-by: NMans Rullgard <mans@mansr.com>

None of these symbols should be accessed directly, so declare them as
hidden.
Signed-off-by: NMans Rullgard <mans@mansr.com>
(cherry picked from commit d36beb3f)

None of these symbols should be accessed directly, so declare them as
hidden.
Signed-off-by: NMans Rullgard <mans@mansr.com>

Patch by flybird2k at gmail

Originally committed as revision 24307 to svn://svn.ffmpeg.org/ffmpeg/trunk

Also put compute_antialias_integer() under !CONFIG_FLOAT and change
forward declarations to declare only the relevant one of these.

Fixes warnings about unused functions and pointer type mismatches.

Originally committed as revision 23950 to svn://svn.ffmpeg.org/ffmpeg/trunk

Should allow for future SIMD optimizations.

Originally committed as revision 23912 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23743 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23095 to svn://svn.ffmpeg.org/ffmpeg/trunk