Annotation of margi2/audio.h, revision 1.2
1.1 cvs 1: /*
2: audio.h
3:
4: Copyright (C) Christian Wolff for convergence integrated media.
5:
6: This program is free software; you can redistribute it and/or modify
7: it under the terms of the GNU General Public License as published by
8: the Free Software Foundation; either version 2 of the License, or
9: (at your option) any later version.
10:
11: This program is distributed in the hope that it will be useful,
12: but WITHOUT ANY WARRANTY; without even the implied warranty of
13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14: GNU General Public License for more details.
15:
16: You should have received a copy of the GNU General Public License
17: along with this program; if not, write to the Free Software
18: Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19: */
20:
21:
22: #ifndef CVDV_AUDIO_H
23: #define CVDV_AUDIO_H
24:
25: //
26: // Audio Decoder
27: //
28: #define __NO_VERSION__
29: #include <pcmcia/config.h>
30: #include <pcmcia/k_compat.h>
31:
32: #include "cardbase.h"
33:
1.2 ! mocm 34: #define MAUDIO_PAUSE 0
! 35: #define MAUDIO_PLAY 1
! 36: #define MAUDIO_FAST 2
! 37: #define MAUDIO_SLOW 3
1.1 cvs 38:
39: // mode=0 pause
40: // mode=1 normal speed play
41: // mode=2 fast play, 16/15
42: // mode=3 slow play, 16/17
43: void AudioSetPlayMode(struct cvdv_cards *card, int mode);
44:
45: void AudioStartDecode(struct cvdv_cards *card);
46:
47: // Stop Decode flushes the Audio ES channel buffer
48: void AudioStopDecode(struct cvdv_cards *card);
49:
50: void AudioStartFormat(struct cvdv_cards *card);
51:
52: void AudioStopFormat(struct cvdv_cards *card);
53:
54: // Audio source: S/PDIF out:
55: // mode 0: MPEG IEC958
56: // mode 1: AC3 IEC958
57: // mode 2: MPEG MPEG
58: // mode 3: AC3 AC3
59: // mode 4: PCM IEC958 (max. 48kHz)
60: // mode 5: PCM 96->48kHz IEC958 (48kHz)
61: // mode 6: CD Bypass S/PDIF Bypass
62: // mode 7: PCM FIFO PCM FIFO
63: void AudioSetMode(struct cvdv_cards *card, int mode);
64:
65:
66: // volume: 0..255
67: void AudioSetVolume(struct cvdv_cards *card, int volume);
68:
69: // mute=1: mute audio
70: void AudioMute(struct cvdv_cards *card, int mute);
71:
72: // mode=0: stereo
73: // mode=1: surround
74: void AudioAC3Mode(struct cvdv_cards *card, int mode);
75:
76: // mode=0: custom analog
77: // mode=1: custom digital
78: // mode=2: line-out (default)
79: // mode=3: RF mode
80: void AudioAC3Compression(struct cvdv_cards *card, int mode);
81:
82: // mode=0: AC3
83: // mode=1: ES1
84: void AudioAC3Formatter(struct cvdv_cards *card, int mode);
85:
86: // mode=0: Stereo
87: // mode=1: Right channel only
88: // mode=2: Left channel only
89: // mode=3: Mono Mix
90: void AudioDualMono(struct cvdv_cards *card, int mode);
91:
92: // swap=0: L->L, R->R
93: // swap=1: L->R, R->L
94: void AudioSwap(struct cvdv_cards *card, int swap);
95:
96: // select=0: use clock from ACLK_441 pin -> ACLK=44.1kHz*N
97: // select=1: use clock from ACLK_48 pin -> ACLK=48.0kHz*N
98: // select=2: use clock from ACLK_32 pin -> ACLK=32.0kHz*N
99: // Since the programmable sample rate generator of the PCM1723 is connected to
100: // all 3 of them, it doen't matter wich one you choose.
101: // divider=0: ACLK=768*Fs / S/PDIF-BCLK=ACLK/6 / DAC-BCLK=ACLK/12 / DAC-A_ACLK=ACLK/3
102: // divider=1: ACLK=768*Fs / S/PDIF-BCLK=ACLK/6 / DAC-BCLK=ACLK/12 / DAC-A_ACLK=ACLK/2
103: // divider=2: ACLK=512*Fs / S/PDIF-BCLK=ACLK/4 / DAC-BCLK=ACLK/8 / DAC-A_ACLK=ACLK/2
104: // divider=3: ACLK=384*Fs / S/PDIF-BCLK=ACLK/3 / DAC-BCLK=ACLK/6 / DAC-A_ACLK=ACLK/1
105: // divider=4: ACLK=256*Fs / S/PDIF-BCLK=ACLK/2 / DAC-BCLK=ACLK/4 / DAC-A_ACLK=ACLK/1
106: // divider=5: ACLK=768*48kHz / S/PDIF-BCLK=ACLK/6 / DAC-BCLK=ACLK/6 / DAC-A_ACLK=ACLK/1
107: // divider=6: ACLK=512*48kHz / S/PDIF-BCLK=ACLK/4 / DAC-BCLK=ACLK/4 / DAC-A_ACLK=ACLK/1
108: // divider=C: ACLK=768*48kHz / S/PDIF-BCLK=ACLK/9 / DAC-BCLK=ACLK/18 / DAC-A_ACLK=ACLK/3
109: // divider=D: ACLK=512*48kHz / S/PDIF-BCLK=ACLK/6 / DAC-BCLK=ACLK/12 / DAC-A_ACLK=ACLK/3
110: // divider=E: ACLK=512*48kHz / S/PDIF-BCLK=ACLK/6 / DAC-BCLK=ACLK/12 / DAC-A_ACLK=ACLK/2
111: // divider=F: ACLK=256*48kHz / S/PDIF-BCLK=ACLK/3 / DAC-BCLK=ACLK/6 / DAC-A_ACLK=ACLK/1
112: // Fs is the audio sample frequency
113: // For the normal cases, (32, 44.1, and 48 kHz) select divider 0 through 4 and set
114: // sample frequency in PCM1723 accordingly
115: // For 96 kHz, select divider 5 or 6, and set PCM1723 to 48kHz*768 or *512 resp.
116: // Divider C through F are for 32 kHz sample frequency with a 48kHz*x ACLK
117: void AudioSetACLK(struct cvdv_cards *card, int select, int divider);
118:
119: int AudioOpen(struct cvdv_cards *card);
120:
121: int AudioClose(struct cvdv_cards *card);
122:
123: // audiorate: 16, 32, 64, 22(.05), 44(.1), 88(.2), 24, 48, 96 kHz
124: // surround=0: Stereo
125: // surround=1: Surround
126: int AudioInit(struct cvdv_cards *card, int audiorate, int surround);
127:
128:
129: // returns size of the Video ES Buffer in bytes or 0=error
130: u32 DecoderGetAudioESSize(struct cvdv_cards *card);
131:
132: // returns level of fullness in bytes
133: u32 DecoderGetAudioESLevel(struct cvdv_cards *card);
134:
135: int DecoderKaraoke(struct cvdv_cards *card, int vocal1, int vocal2,
136: int melody);
137:
138: #endif /* CVDV_AUDIO_H */
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