diff options
author | Yoshihisa Uchida <uchida@rockbox.org> | 2010-02-28 08:13:30 +0000 |
---|---|---|
committer | Yoshihisa Uchida <uchida@rockbox.org> | 2010-02-28 08:13:30 +0000 |
commit | 8c5eaa35ecd8b5239e2cb4848e29310daa6f4a88 (patch) | |
tree | c9da4e9c38f4ebb150c36bdac88136a7336146ff /apps/codecs/vox.c | |
parent | 4e3c8074664fa87b023643f375171d544d662141 (diff) | |
download | rockbox-8c5eaa35ecd8b5239e2cb4848e29310daa6f4a88.tar.gz rockbox-8c5eaa35ecd8b5239e2cb4848e29310daa6f4a88.zip |
Add vox (Dialogic telephony formats) codec add. (FS#11021)
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24956 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'apps/codecs/vox.c')
-rw-r--r-- | apps/codecs/vox.c | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/apps/codecs/vox.c b/apps/codecs/vox.c new file mode 100644 index 0000000000..44701fafb8 --- /dev/null +++ b/apps/codecs/vox.c | |||
@@ -0,0 +1,181 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id$ | ||
9 | * | ||
10 | * Copyright (C) 2010 Yoshihisa Uchida | ||
11 | * | ||
12 | * This program is free software; you can redistribute it and/or | ||
13 | * modify it under the terms of the GNU General Public License | ||
14 | * as published by the Free Software Foundation; either version 2 | ||
15 | * of the License, or (at your option) any later version. | ||
16 | * | ||
17 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
18 | * KIND, either express or implied. | ||
19 | * | ||
20 | ****************************************************************************/ | ||
21 | |||
22 | #include "codeclib.h" | ||
23 | #include "codecs/libpcm/support_formats.h" | ||
24 | |||
25 | CODEC_HEADER | ||
26 | |||
27 | /* vox codec (Dialogic telephony file formats) */ | ||
28 | |||
29 | #define PCM_SAMPLE_SIZE (2048) | ||
30 | |||
31 | static int32_t samples[PCM_SAMPLE_SIZE] IBSS_ATTR; | ||
32 | |||
33 | static struct pcm_format format; | ||
34 | static uint32_t bytesdone; | ||
35 | |||
36 | static uint8_t *read_buffer(size_t *realsize) | ||
37 | { | ||
38 | uint8_t *buffer = (uint8_t *)ci->request_buffer(realsize, format.chunksize); | ||
39 | if (bytesdone + (*realsize) > format.numbytes) | ||
40 | *realsize = format.numbytes - bytesdone; | ||
41 | bytesdone += *realsize; | ||
42 | ci->advance_buffer(*realsize); | ||
43 | return buffer; | ||
44 | } | ||
45 | |||
46 | /* this is the codec entry point */ | ||
47 | enum codec_status codec_main(void) | ||
48 | { | ||
49 | int status = CODEC_OK; | ||
50 | uint32_t decodedsamples; | ||
51 | size_t n; | ||
52 | int bufcount; | ||
53 | int endofstream; | ||
54 | uint8_t *voxbuf; | ||
55 | off_t firstblockposn; /* position of the first block in file */ | ||
56 | const struct pcm_codec *codec; | ||
57 | int offset = 0; | ||
58 | |||
59 | /* Generic codec initialisation */ | ||
60 | ci->configure(DSP_SET_SAMPLE_DEPTH, 28); | ||
61 | |||
62 | next_track: | ||
63 | if (codec_init()) { | ||
64 | DEBUGF("codec_init() error\n"); | ||
65 | status = CODEC_ERROR; | ||
66 | goto exit; | ||
67 | } | ||
68 | |||
69 | while (!*ci->taginfo_ready && !ci->stop_codec) | ||
70 | ci->sleep(1); | ||
71 | |||
72 | codec_set_replaygain(ci->id3); | ||
73 | |||
74 | ci->memset(&format, 0, sizeof(struct pcm_format)); | ||
75 | |||
76 | /* set format */ | ||
77 | format.channels = 1; | ||
78 | format.bitspersample = 4; | ||
79 | format.numbytes = ci->id3->filesize; | ||
80 | format.blockalign = 1; | ||
81 | |||
82 | /* advance to first WAVE chunk */ | ||
83 | ci->advance_buffer(offset); | ||
84 | |||
85 | firstblockposn = offset; | ||
86 | |||
87 | decodedsamples = 0; | ||
88 | bytesdone = 0; | ||
89 | |||
90 | /* | ||
91 | * get codec | ||
92 | * supports dialogic oki adpcm only | ||
93 | */ | ||
94 | codec = get_dialogic_oki_adpcm_codec(); | ||
95 | if (!codec) | ||
96 | { | ||
97 | DEBUGF("CODEC_ERROR: dialogic oki adpcm codec does not load.\n"); | ||
98 | status = CODEC_ERROR; | ||
99 | goto done; | ||
100 | } | ||
101 | |||
102 | if (!codec->set_format(&format)) | ||
103 | { | ||
104 | status = CODEC_ERROR; | ||
105 | goto done; | ||
106 | } | ||
107 | |||
108 | if (format.numbytes == 0) { | ||
109 | DEBUGF("CODEC_ERROR: data size is 0\n"); | ||
110 | status = CODEC_ERROR; | ||
111 | goto done; | ||
112 | } | ||
113 | |||
114 | /* check chunksize */ | ||
115 | if (format.chunksize * 2 > PCM_SAMPLE_SIZE) | ||
116 | format.chunksize = PCM_SAMPLE_SIZE / 2; | ||
117 | if (format.chunksize == 0) | ||
118 | { | ||
119 | DEBUGF("CODEC_ERROR: chunksize is 0\n"); | ||
120 | status = CODEC_ERROR; | ||
121 | goto done; | ||
122 | } | ||
123 | |||
124 | ci->configure(DSP_SWITCH_FREQUENCY, ci->id3->frequency); | ||
125 | ci->configure(DSP_SET_STEREO_MODE, STEREO_MONO); | ||
126 | |||
127 | /* The main decoder loop */ | ||
128 | endofstream = 0; | ||
129 | |||
130 | while (!endofstream) { | ||
131 | ci->yield(); | ||
132 | if (ci->stop_codec || ci->new_track) { | ||
133 | break; | ||
134 | } | ||
135 | |||
136 | if (ci->seek_time) { | ||
137 | struct pcm_pos *newpos = codec->get_seek_pos(ci->seek_time, &read_buffer); | ||
138 | |||
139 | decodedsamples = newpos->samples; | ||
140 | if (newpos->pos > format.numbytes) | ||
141 | break; | ||
142 | if (ci->seek_buffer(firstblockposn + newpos->pos)) | ||
143 | { | ||
144 | bytesdone = newpos->pos; | ||
145 | } | ||
146 | ci->seek_complete(); | ||
147 | } | ||
148 | |||
149 | voxbuf = (uint8_t *)ci->request_buffer(&n, format.chunksize); | ||
150 | if (n == 0) | ||
151 | break; /* End of stream */ | ||
152 | if (bytesdone + n > format.numbytes) { | ||
153 | n = format.numbytes - bytesdone; | ||
154 | endofstream = 1; | ||
155 | } | ||
156 | |||
157 | status = codec->decode(voxbuf, n, samples, &bufcount); | ||
158 | if (status == CODEC_ERROR) | ||
159 | { | ||
160 | DEBUGF("codec error\n"); | ||
161 | goto done; | ||
162 | } | ||
163 | |||
164 | ci->pcmbuf_insert(samples, NULL, bufcount); | ||
165 | ci->advance_buffer(n); | ||
166 | bytesdone += n; | ||
167 | decodedsamples += bufcount; | ||
168 | |||
169 | if (bytesdone >= format.numbytes) | ||
170 | endofstream = 1; | ||
171 | ci->set_elapsed(decodedsamples*1000LL/ci->id3->frequency); | ||
172 | } | ||
173 | status = CODEC_OK; | ||
174 | |||
175 | done: | ||
176 | if (ci->request_next_track()) | ||
177 | goto next_track; | ||
178 | |||
179 | exit: | ||
180 | return status; | ||
181 | } | ||