aucat, sndiod: const-ify lookup tables

From naddy@

aucat/afile.c

@@ -131,28 +131,28 @@ struct au_hdr {
 	/* followed by optional desc[] continuation */
 };
 
-char wav_id_riff[4] = {'R', 'I', 'F', 'F'};
-char wav_id_wave[4] = {'W', 'A', 'V', 'E'};
-char wav_id_data[4] = {'d', 'a', 't', 'a'};
-char wav_id_fmt[4] = {'f', 'm', 't', ' '};
-char wav_guid[14] = {
+const char wav_id_riff[4] = {'R', 'I', 'F', 'F'};
+const char wav_id_wave[4] = {'W', 'A', 'V', 'E'};
+const char wav_id_data[4] = {'d', 'a', 't', 'a'};
+const char wav_id_fmt[4] = {'f', 'm', 't', ' '};
+const char wav_guid[14] = {
 	0x00, 0x00, 0x00, 0x00,
 	0x10, 0x00, 0x80, 0x00,
 	0x00, 0xAA, 0x00, 0x38,
 	0x9B, 0x71
 };
 
-char aiff_id_form[4] = {'F', 'O', 'R', 'M'};
-char aiff_id_aiff[4] = {'A', 'I', 'F', 'F'};
-char aiff_id_aifc[4] = {'A', 'I', 'F', 'C'};
-char aiff_id_data[4] = {'S', 'S', 'N', 'D'};
-char aiff_id_comm[4] = {'C', 'O', 'M', 'M'};
-char aiff_id_none[4] = {'N', 'O', 'N', 'E'};
-char aiff_id_fl32[4] = {'f', 'l', '3', '2'};
-char aiff_id_ulaw[4] = {'u', 'l', 'a', 'w'};
-char aiff_id_alaw[4] = {'a', 'l', 'a', 'w'};
+const char aiff_id_form[4] = {'F', 'O', 'R', 'M'};
+const char aiff_id_aiff[4] = {'A', 'I', 'F', 'F'};
+const char aiff_id_aifc[4] = {'A', 'I', 'F', 'C'};
+const char aiff_id_data[4] = {'S', 'S', 'N', 'D'};
+const char aiff_id_comm[4] = {'C', 'O', 'M', 'M'};
+const char aiff_id_none[4] = {'N', 'O', 'N', 'E'};
+const char aiff_id_fl32[4] = {'f', 'l', '3', '2'};
+const char aiff_id_ulaw[4] = {'u', 'l', 'a', 'w'};
+const char aiff_id_alaw[4] = {'a', 'l', 'a', 'w'};
 
-char au_id[4] = {'.', 's', 'n', 'd'};
+const char au_id[4] = {'.', 's', 'n', 'd'};
 
 static inline unsigned int
 le16_get(le16_t *p)

aucat/aucat.c

@@ -132,8 +132,8 @@ struct slot *slot_list = NULL;
 /*
  * length of voice and common MIDI messages (status byte included)
  */
-unsigned int voice_len[] = { 3, 3, 3, 3, 2, 2, 3 };
-unsigned int common_len[] = { 0, 2, 3, 2, 0, 0, 1, 1 };
+const unsigned int voice_len[] = { 3, 3, 3, 3, 2, 2, 3 };
+const unsigned int common_len[] = { 0, 2, 3, 2, 0, 0, 1, 1 };
 
 char usagestr[] = "usage: aucat [-dn] [-b size] "
     "[-c min:max] [-e enc] [-f device] [-g position]\n\t"

aucat/dsp.c

@@ -18,7 +18,7 @@
 #include "dsp.h"
 #include "utils.h"
 
-int aparams_ctltovol[128] = {
+const int aparams_ctltovol[128] = {
 	    0,
 	  256,	  266,	  276,	  287,	  299,	  310,	  323,	  335,
 	  348,	  362,	  376,	  391,	  406,	  422,	  439,	  456,
@@ -38,7 +38,7 @@ int aparams_ctltovol[128] = {
 	26008,	27029,	28090,	29193,	30339,	31530,	32768
 };
 
-short dec_ulawmap[256] = {
+const short dec_ulawmap[256] = {
 	-32124, -31100, -30076, -29052, -28028, -27004, -25980, -24956,
 	-23932, -22908, -21884, -20860, -19836, -18812, -17788, -16764,
 	-15996, -15484, -14972, -14460, -13948, -13436, -12924, -12412,
@@ -73,7 +73,7 @@ short dec_ulawmap[256] = {
 	    56,     48,     40,     32,     24,     16,      8,      0
 };
 
-short dec_alawmap[256] = {
+const short dec_alawmap[256] = {
 	 -5504,  -5248,  -6016,  -5760,  -4480,  -4224,  -4992,  -4736,
 	 -7552,  -7296,  -8064,  -7808,  -6528,  -6272,  -7040,  -6784,
 	 -2752,  -2624,  -3008,  -2880,  -2240,  -2112,  -2496,  -2368,
@@ -108,7 +108,7 @@ short dec_alawmap[256] = {
 	   944,    912,   1008,    976,    816,    784,    880,    848
 };
 
-int resamp_filt[RESAMP_LENGTH / RESAMP_STEP + 1] = {
+const int resamp_filt[RESAMP_LENGTH / RESAMP_STEP + 1] = {
 	      0,       0,       3,       9,      22,      42,      73,     116,
 	    174,     248,     341,     454,     589,     749,     934,    1148,
 	   1392,    1666,    1974,    2316,    2693,    3107,    3560,    4051,
@@ -842,7 +842,7 @@ dec_do_ulaw(struct conv *p, unsigned char *in,
 	unsigned int f;
 	unsigned char *idata;
 	adata_t *odata;
-	short *map;
+	const short *map;
 
 #ifdef DEBUG
 	if (log_level >= 4) {

aucat/dsp.h

@@ -165,7 +165,7 @@ struct cmap {
 };
 
 #define MIDI_TO_ADATA(m)	(aparams_ctltovol[m] << (ADATA_BITS - 16))
-extern int aparams_ctltovol[128];
+extern const int aparams_ctltovol[128];
 
 void aparams_init(struct aparams *);
 void aparams_log(struct aparams *);

sndiod/dsp.c

@@ -18,7 +18,7 @@
 #include "dsp.h"
 #include "utils.h"
 
-int aparams_ctltovol[128] = {
+const int aparams_ctltovol[128] = {
 	    0,
 	  256,	  266,	  276,	  287,	  299,	  310,	  323,	  335,
 	  348,	  362,	  376,	  391,	  406,	  422,	  439,	  456,
@@ -38,7 +38,7 @@ int aparams_ctltovol[128] = {
 	26008,	27029,	28090,	29193,	30339,	31530,	32768
 };
 
-int resamp_filt[RESAMP_LENGTH / RESAMP_STEP + 1] = {
+const int resamp_filt[RESAMP_LENGTH / RESAMP_STEP + 1] = {
 	      0,       0,       3,       9,      22,      42,      73,     116,
 	    174,     248,     341,     454,     589,     749,     934,    1148,
 	   1392,    1666,    1974,    2316,    2693,    3107,    3560,    4051,

sndiod/dsp.h

@@ -164,7 +164,7 @@ struct cmap {
 };
 
 #define MIDI_TO_ADATA(m)	(aparams_ctltovol[m] << (ADATA_BITS - 16))
-extern int aparams_ctltovol[128];
+extern const int aparams_ctltovol[128];
 
 void aparams_init(struct aparams *);
 void aparams_log(struct aparams *);

sndiod/midi.c

@@ -55,8 +55,8 @@ struct midithru {
 /*
  * length of voice and common messages (status byte included)
  */
-unsigned int voice_len[] = { 3, 3, 3, 3, 2, 2, 3 };
-unsigned int common_len[] = { 0, 2, 3, 2, 0, 0, 1, 1 };
+const unsigned int voice_len[] = { 3, 3, 3, 3, 2, 2, 3 };
+const unsigned int common_len[] = { 0, 2, 3, 2, 0, 0, 1, 1 };
 
 void
 midi_log(struct midi *ep)