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hw/audio/cs4231a: Const'ify global tables

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The tables contain spcifically crafted constants for algorithms, so make
them immutable.

Signed-off-by: Bernhard Beschow <shentey@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Acked-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Message-Id: <20220520180109.8224-3-shentey@gmail.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
This commit is contained in:
Bernhard Beschow 2022-05-20 20:01:01 +02:00 committed by Philippe Mathieu-Daudé
parent aa2e535c82
commit bae17e7483
1 changed files with 4 additions and 4 deletions
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8
hw/audio/cs4231a.c
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@ -84,7 +84,7 @@ struct CSState {
int transferred; int transferred;
int aci_counter; int aci_counter;
SWVoiceOut *voice; SWVoiceOut *voice;
int16_t *tab; const int16_t *tab;
}; };
#define MODE2 (1 << 6) #define MODE2 (1 << 6)
@ -142,13 +142,13 @@ enum {
Capture_Lower_Base_Count Capture_Lower_Base_Count
}; };
static int freqs[2][8] = { static const int freqs[2][8] = {
{ 8000, 16000, 27420, 32000, -1, -1, 48000, 9000 }, { 8000, 16000, 27420, 32000, -1, -1, 48000, 9000 },
{ 5510, 11025, 18900, 22050, 37800, 44100, 33075, 6620 } { 5510, 11025, 18900, 22050, 37800, 44100, 33075, 6620 }
}; };
/* Tables courtesy http://hazelware.luggle.com/tutorials/mulawcompression.html */ /* Tables courtesy http://hazelware.luggle.com/tutorials/mulawcompression.html */
static int16_t MuLawDecompressTable[256] = static const int16_t MuLawDecompressTable[256] =
{ {
-32124,-31100,-30076,-29052,-28028,-27004,-25980,-24956, -32124,-31100,-30076,-29052,-28028,-27004,-25980,-24956,
-23932,-22908,-21884,-20860,-19836,-18812,-17788,-16764, -23932,-22908,-21884,-20860,-19836,-18812,-17788,-16764,
@ -184,7 +184,7 @@ static int16_t MuLawDecompressTable[256] =
56, 48, 40, 32, 24, 16, 8, 0 56, 48, 40, 32, 24, 16, 8, 0
}; };
static int16_t ALawDecompressTable[256] = static const int16_t ALawDecompressTable[256] =
{ {
-5504, -5248, -6016, -5760, -4480, -4224, -4992, -4736, -5504, -5248, -6016, -5760, -4480, -4224, -4992, -4736,
-7552, -7296, -8064, -7808, -6528, -6272, -7040, -6784, -7552, -7296, -8064, -7808, -6528, -6272, -7040, -6784,