annotate decoders/libmpg123/format.c @ 576:8d62447b75f2

Added new Core Audio backend.
author Eric Wing <ewing . public |-at-| gmail . com>
date Sun, 10 Oct 2010 21:30:17 -0700
parents 7e08477b0fc1
children
rev   line source
562
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1 /*
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
2 format:routines to deal with audio (output) format
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
3
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
4 copyright 2008 by the mpg123 project - free software under the terms of the LGPL 2.1
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
5 see COPYING and AUTHORS files in distribution or http://mpg123.org
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
6 initially written by Thomas Orgis, starting with parts of the old audio.c, with only faintly manage to show now
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
7 */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
8
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
9 #include "mpg123lib_intern.h"
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
10 #include "debug.h"
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
11
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
12 /* static int chans[NUM_CHANNELS] = { 1 , 2 }; */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
13 static const long my_rates[MPG123_RATES] = /* only the standard rates */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
14 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
15 8000, 11025, 12000,
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
16 16000, 22050, 24000,
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
17 32000, 44100, 48000,
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
18 };
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
19 static const int my_encodings[MPG123_ENCODINGS] =
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
20 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
21 MPG123_ENC_SIGNED_16,
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
22 MPG123_ENC_UNSIGNED_16,
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
23 MPG123_ENC_UNSIGNED_8,
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
24 MPG123_ENC_SIGNED_8,
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
25 MPG123_ENC_ULAW_8,
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
26 MPG123_ENC_ALAW_8,
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
27 MPG123_ENC_SIGNED_32,
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
28 MPG123_ENC_UNSIGNED_32,
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
29 MPG123_ENC_FLOAT_32,
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
30 MPG123_ENC_FLOAT_64
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
31 };
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
32
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
33 /* Check if encoding (mask) is a valid one in this build. */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
34 static int good_enc(int enc)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
35 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
36 if(!(enc & MPG123_ENC_ANY)) return FALSE;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
37 #ifdef FLOATOUT
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
38 #ifdef REAL_IS_FLOAT /* we know only 32bit*/
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
39 if(enc != MPG123_ENC_FLOAT_32) return FALSE;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
40 #else
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
41 if(enc != MPG123_ENC_FLOAT_64) return FALSE;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
42 #endif
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
43 #else
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
44 if(enc & MPG123_ENC_FLOAT) return FALSE;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
45 #endif
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
46 if(enc & MPG123_ENC_32) return FALSE; /* Not supported yet. */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
47 if(enc == MPG123_ENC_UNSIGNED_16) return FALSE; /* Not supported yet... ever? */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
48
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
49 return TRUE;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
50 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
51
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
52 void attribute_align_arg mpg123_rates(const long **list, size_t *number)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
53 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
54 if(list != NULL) *list = my_rates;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
55 if(number != NULL) *number = sizeof(my_rates)/sizeof(long);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
56 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
57
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
58 /* Now that's a bit tricky... One build of the library knows only a subset of the encodings. */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
59 void attribute_align_arg mpg123_encodings(const int **list, size_t *number)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
60 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
61 size_t offset = 0;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
62 size_t n = sizeof(my_encodings)/sizeof(int)-4; /* The last 4 are special. */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
63 #ifdef FLOATOUT /* Skip integer encodings. */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
64 n = 1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
65 #ifdef REAL_IS_FLOAT /* we know only 32bit*/
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
66 offset = 8; /* Only 32bit float */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
67 #else
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
68 offset = 9; /* Only 64bit float */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
69 #endif
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
70 #endif /* There should be a branch for 32bit integer; but that's not anywhere now. */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
71 if(list != NULL) *list = my_encodings+offset;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
72 if(number != NULL) *number = n;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
73 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
74
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
75 /* char audio_caps[NUM_CHANNELS][MPG123_RATES+1][MPG123_ENCODINGS]; */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
76
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
77 static int rate2num(mpg123_pars *mp, long r)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
78 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
79 int i;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
80 for(i=0;i<MPG123_RATES;i++) if(my_rates[i] == r) return i;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
81 if(mp && mp->force_rate != 0 && mp->force_rate == r) return MPG123_RATES;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
82
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
83 return -1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
84 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
85
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
86 static int enc2num(int encoding)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
87 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
88 int i;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
89 for(i=0;i<MPG123_ENCODINGS;++i)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
90 if(my_encodings[i] == encoding) return i;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
91
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
92 return -1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
93 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
94
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
95 static int cap_fit(mpg123_handle *fr, struct audioformat *nf, int f0, int f2)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
96 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
97 int i;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
98 int c = nf->channels-1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
99 int rn = rate2num(&fr->p, nf->rate);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
100 if(rn >= 0) for(i=f0;i<f2;i++)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
101 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
102 if(fr->p.audio_caps[c][rn][i])
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
103 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
104 nf->encoding = my_encodings[i];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
105 return 1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
106 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
107 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
108 return 0;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
109 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
110
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
111 static int freq_fit(mpg123_handle *fr, struct audioformat *nf, int f0, int f2)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
112 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
113 nf->rate = frame_freq(fr)>>fr->p.down_sample;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
114 if(cap_fit(fr,nf,f0,f2)) return 1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
115 nf->rate>>=1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
116 if(cap_fit(fr,nf,f0,f2)) return 1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
117 nf->rate>>=1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
118 if(cap_fit(fr,nf,f0,f2)) return 1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
119 return 0;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
120 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
121
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
122 /* match constraints against supported audio formats, store possible setup in frame
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
123 return: -1: error; 0: no format change; 1: format change */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
124 int frame_output_format(mpg123_handle *fr)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
125 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
126 struct audioformat nf;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
127 int f0=0;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
128 int f2=MPG123_ENCODINGS-4; /* Omit the 32bit and float encodings. */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
129 mpg123_pars *p = &fr->p;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
130 /* initialize new format, encoding comes later */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
131 nf.channels = fr->stereo;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
132
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
133 #ifdef FLOATOUT /* Skip integer encodings. */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
134 #ifdef REAL_IS_FLOAT /* we know only 32bit*/
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
135 f0 = 8; /* Only 32bit float */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
136 #else
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
137 f0 = 9; /* Only 64bit float */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
138 #endif
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
139 f2 = f0+1; /* Only one encoding to try... */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
140 #else
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
141 if(p->flags & MPG123_FORCE_8BIT) f0 = 2; /* skip the 16bit encodings */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
142 #endif /* There should be a branch for 32bit integer; but that's not anywhere now. */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
143
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
144 /* force stereo is stronger */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
145 if(p->flags & MPG123_FORCE_MONO) nf.channels = 1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
146 if(p->flags & MPG123_FORCE_STEREO) nf.channels = 2;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
147
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
148 if(p->force_rate)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
149 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
150 nf.rate = p->force_rate;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
151 if(cap_fit(fr,&nf,f0,2)) goto end; /* 16bit encodings */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
152 if(cap_fit(fr,&nf,2,f2)) goto end; /* 8bit encodings */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
153
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
154 /* try again with different stereoness */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
155 if(nf.channels == 2 && !(p->flags & MPG123_FORCE_STEREO)) nf.channels = 1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
156 else if(nf.channels == 1 && !(p->flags & MPG123_FORCE_MONO)) nf.channels = 2;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
157
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
158 if(cap_fit(fr,&nf,f0,2)) goto end; /* 16bit encodings */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
159 if(cap_fit(fr,&nf,2,f2)) goto end; /* 8bit encodings */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
160
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
161 if(NOQUIET)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
162 error3( "Unable to set up output format! Constraints: %s%s%liHz.",
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
163 ( p->flags & MPG123_FORCE_STEREO ? "stereo, " :
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
164 (p->flags & MPG123_FORCE_MONO ? "mono, " : "") ),
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
165 (p->flags & MPG123_FORCE_8BIT ? "8bit, " : ""),
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
166 p->force_rate );
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
167 /* if(NOQUIET && p->verbose <= 1) print_capabilities(fr); */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
168
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
169 fr->err = MPG123_BAD_OUTFORMAT;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
170 return -1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
171 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
172
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
173 if(freq_fit(fr, &nf, f0, 2)) goto end; /* try rates with 16bit */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
174 if(freq_fit(fr, &nf, 2, f2)) goto end; /* ... 8bit */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
175
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
176 /* try again with different stereoness */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
177 if(nf.channels == 2 && !(p->flags & MPG123_FORCE_STEREO)) nf.channels = 1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
178 else if(nf.channels == 1 && !(p->flags & MPG123_FORCE_MONO)) nf.channels = 2;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
179
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
180 if(freq_fit(fr, &nf, f0, 2)) goto end; /* try rates with 16bit */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
181 if(freq_fit(fr, &nf, 2, f2)) goto end; /* ... 8bit */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
182
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
183 /* Here is the _bad_ end. */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
184 if(NOQUIET)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
185 error5( "Unable to set up output format! Constraints: %s%s%li, %li or %liHz.",
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
186 ( p->flags & MPG123_FORCE_STEREO ? "stereo, " :
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
187 (p->flags & MPG123_FORCE_MONO ? "mono, " : "") ),
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
188 (p->flags & MPG123_FORCE_8BIT ? "8bit, " : ""),
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
189 frame_freq(fr), frame_freq(fr)>>1, frame_freq(fr)>>2 );
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
190 /* if(NOQUIET && p->verbose <= 1) print_capabilities(fr); */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
191
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
192 fr->err = MPG123_BAD_OUTFORMAT;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
193 return -1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
194
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
195 end: /* Here is the _good_ end. */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
196 /* we had a successful match, now see if there's a change */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
197 if(nf.rate == fr->af.rate && nf.channels == fr->af.channels && nf.encoding == fr->af.encoding)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
198 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
199 debug("Old format!");
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
200 return 0; /* the same format as before */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
201 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
202 else /* a new format */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
203 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
204 debug("New format!");
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
205 fr->af.rate = nf.rate;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
206 fr->af.channels = nf.channels;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
207 fr->af.encoding = nf.encoding;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
208 return 1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
209 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
210 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
211
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
212 int attribute_align_arg mpg123_format_none(mpg123_handle *mh)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
213 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
214 int r;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
215 if(mh == NULL) return MPG123_ERR;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
216
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
217 r = mpg123_fmt_none(&mh->p);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
218 if(r != MPG123_OK){ mh->err = r; r = MPG123_ERR; }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
219
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
220 return r;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
221 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
222
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
223 int attribute_align_arg mpg123_fmt_none(mpg123_pars *mp)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
224 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
225 if(mp == NULL) return MPG123_BAD_PARS;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
226
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
227 if(PVERB(mp,3)) fprintf(stderr, "Note: Disabling all formats.\n");
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
228
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
229 memset(mp->audio_caps,0,sizeof(mp->audio_caps));
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
230 return MPG123_OK;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
231 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
232
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
233 int attribute_align_arg mpg123_format_all(mpg123_handle *mh)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
234 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
235 int r;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
236 if(mh == NULL) return MPG123_ERR;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
237
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
238 r = mpg123_fmt_all(&mh->p);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
239 if(r != MPG123_OK){ mh->err = r; r = MPG123_ERR; }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
240
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
241 return r;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
242 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
243
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
244 int attribute_align_arg mpg123_fmt_all(mpg123_pars *mp)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
245 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
246 size_t rate, ch, enc;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
247 if(mp == NULL) return MPG123_BAD_PARS;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
248
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
249 if(PVERB(mp,3)) fprintf(stderr, "Note: Enabling all formats.\n");
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
250
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
251 for(ch=0; ch < NUM_CHANNELS; ++ch)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
252 for(rate=0; rate < MPG123_RATES+1; ++rate)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
253 for(enc=0; enc < MPG123_ENCODINGS; ++enc)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
254 mp->audio_caps[ch][rate][enc] = good_enc(my_encodings[enc]) ? 1 : 0;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
255
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
256 return MPG123_OK;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
257 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
258
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
259 int attribute_align_arg mpg123_format(mpg123_handle *mh, long rate, int channels, int encodings)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
260 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
261 int r;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
262 if(mh == NULL) return MPG123_ERR;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
263 r = mpg123_fmt(&mh->p, rate, channels, encodings);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
264 if(r != MPG123_OK){ mh->err = r; r = MPG123_ERR; }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
265
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
266 return r;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
267 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
268
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
269 int attribute_align_arg mpg123_fmt(mpg123_pars *mp, long rate, int channels, int encodings)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
270 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
271 int ie, ic, ratei;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
272 int ch[2] = {0, 1};
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
273 if(mp == NULL) return MPG123_BAD_PARS;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
274 if(!(channels & (MPG123_MONO|MPG123_STEREO))) return MPG123_BAD_CHANNEL;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
275
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
276 if(PVERB(mp,3)) fprintf(stderr, "Note: Want to enable format %li/%i for encodings 0x%x.\n", rate, channels, encodings);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
277
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
278 if(!(channels & MPG123_STEREO)) ch[1] = 0; /* {0,0} */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
279 else if(!(channels & MPG123_MONO)) ch[0] = 1; /* {1,1} */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
280 ratei = rate2num(mp, rate);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
281 if(ratei < 0) return MPG123_BAD_RATE;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
282
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
283 /* now match the encodings */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
284 for(ic = 0; ic < 2; ++ic)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
285 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
286 for(ie = 0; ie < MPG123_ENCODINGS; ++ie)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
287 if(good_enc(my_encodings[ie]) && ((my_encodings[ie] & encodings) == my_encodings[ie]))
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
288 mp->audio_caps[ch[ic]][ratei][ie] = 1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
289
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
290 if(ch[0] == ch[1]) break; /* no need to do it again */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
291 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
292
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
293 return MPG123_OK;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
294 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
295
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
296 int attribute_align_arg mpg123_format_support(mpg123_handle *mh, long rate, int encoding)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
297 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
298 if(mh == NULL) return 0;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
299 else return mpg123_fmt_support(&mh->p, rate, encoding);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
300 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
301
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
302 int attribute_align_arg mpg123_fmt_support(mpg123_pars *mp, long rate, int encoding)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
303 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
304 int ch = 0;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
305 int ratei, enci;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
306 ratei = rate2num(mp, rate);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
307 enci = enc2num(encoding);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
308 if(mp == NULL || ratei < 0 || enci < 0) return 0;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
309 if(mp->audio_caps[0][ratei][enci]) ch |= MPG123_MONO;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
310 if(mp->audio_caps[1][ratei][enci]) ch |= MPG123_STEREO;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
311 return ch;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
312 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
313
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
314 /* Call this one to ensure that any valid format will be something different than this. */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
315 void invalidate_format(struct audioformat *af)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
316 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
317 af->encoding = 0;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
318 af->rate = 0;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
319 af->channels = 0;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
320 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
321