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audioconvert: implement noise shaping

Browse source 
To compare the results:

  pw-cat -r test.wav --format=u8 -P '{ dither.method=none }'

vs:

  pw-cat -r test.wav --format=u8 -P '{ dither.method=shaped5 }'
This commit is contained in:
Wim Taymans 2022-06-29 17:31:32 +02:00
parent 7701786016
commit 9b37142ef6
3 changed files with 216 additions and 6 deletions
Download patch file Download diff file Expand all files Collapse all files

7
spa/plugins/audioconvert/fmt-ops.c
View file

@ -170,16 +170,20 @@ static struct conv_info conv_table[] =
/* from f32 */
MAKE(F32, U8, 0, conv_f32_to_u8_c),
MAKE(F32P, U8P, 0, conv_f32d_to_u8d_shaped_c, 0, CONV_SHAPE),
MAKE(F32P, U8P, 0, conv_f32d_to_u8d_dither_c, 0, CONV_DITHER),
MAKE(F32P, U8P, 0, conv_f32d_to_u8d_c),
MAKE(F32, U8P, 0, conv_f32_to_u8d_c),
MAKE(F32P, U8, 0, conv_f32d_to_u8_shaped_c, 0, CONV_SHAPE),
MAKE(F32P, U8, 0, conv_f32d_to_u8_dither_c, 0, CONV_DITHER),
MAKE(F32P, U8, 0, conv_f32d_to_u8_c),
MAKE(F32, S8, 0, conv_f32_to_s8_c),
MAKE(F32P, S8P, 0, conv_f32d_to_s8d_shaped_c, 0, CONV_SHAPE),
MAKE(F32P, S8P, 0, conv_f32d_to_s8d_dither_c, 0, CONV_DITHER),
MAKE(F32P, S8P, 0, conv_f32d_to_s8d_c),
MAKE(F32, S8P, 0, conv_f32_to_s8d_c),
MAKE(F32P, S8, 0, conv_f32d_to_s8_shaped_c, 0, CONV_SHAPE),
MAKE(F32P, S8, 0, conv_f32d_to_s8_dither_c, 0, CONV_DITHER),
MAKE(F32P, S8, 0, conv_f32d_to_s8_c),
@ -194,6 +198,7 @@ static struct conv_info conv_table[] =
#endif
MAKE(F32, S16, 0, conv_f32_to_s16_c),
MAKE(F32P, S16P, 0, conv_f32d_to_s16d_shaped_c, 0, CONV_SHAPE),
MAKE(F32P, S16P, 0, conv_f32d_to_s16d_dither_c, 0, CONV_DITHER),
#if defined (HAVE_SSE2)
MAKE(F32P, S16P, 0, conv_f32d_to_s16d_sse2, SPA_CPU_FLAG_SSE2),
@ -202,6 +207,7 @@ static struct conv_info conv_table[] =
MAKE(F32, S16P, 0, conv_f32_to_s16d_c),
MAKE(F32P, S16, 0, conv_f32d_to_s16_shaped_c, 0, CONV_SHAPE),
MAKE(F32P, S16, 0, conv_f32d_to_s16_dither_c, 0, CONV_DITHER),
#if defined (HAVE_NEON)
MAKE(F32P, S16, 0, conv_f32d_to_s16_neon, SPA_CPU_FLAG_NEON),
@ -217,6 +223,7 @@ static struct conv_info conv_table[] =
#endif
MAKE(F32P, S16, 0, conv_f32d_to_s16_c),
MAKE(F32P, S16_OE, 0, conv_f32d_to_s16s_shaped_c, 0, CONV_SHAPE),
MAKE(F32P, S16_OE, 0, conv_f32d_to_s16s_dither_c, 0, CONV_DITHER),
MAKE(F32P, S16_OE, 0, conv_f32d_to_s16s_c),