diff options
Diffstat (limited to 'apps/codecs/cook.c')
-rw-r--r-- | apps/codecs/cook.c | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/apps/codecs/cook.c b/apps/codecs/cook.c new file mode 100644 index 0000000000..7b4b8e7461 --- /dev/null +++ b/apps/codecs/cook.c | |||
@@ -0,0 +1,144 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * Copyright (C) 2009 Mohamed Tarek | ||
9 | * | ||
10 | * This program is free software; you can redistribute it and/or | ||
11 | * modify it under the terms of the GNU General Public License | ||
12 | * as published by the Free Software Foundation; either version 2 | ||
13 | * of the License, or (at your option) any later version. | ||
14 | * | ||
15 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
16 | * KIND, either express or implied. | ||
17 | * | ||
18 | ****************************************************************************/ | ||
19 | |||
20 | #include <string.h> | ||
21 | |||
22 | #include "logf.h" | ||
23 | #include "codeclib.h" | ||
24 | #include "inttypes.h" | ||
25 | #include "libcook/cook.h" | ||
26 | |||
27 | #define DATA_HEADER_SIZE 18 /* size of DATA chunk header in a rm file */ | ||
28 | |||
29 | CODEC_HEADER | ||
30 | |||
31 | RMContext rmctx; | ||
32 | RMPacket pkt; | ||
33 | COOKContext q; | ||
34 | |||
35 | static void init_rm(RMContext *rmctx) | ||
36 | { | ||
37 | memcpy(rmctx, ci->id3->id3v2buf, sizeof(RMContext)); | ||
38 | } | ||
39 | |||
40 | /* this is the codec entry point */ | ||
41 | enum codec_status codec_main(void) | ||
42 | { | ||
43 | static size_t buff_size; | ||
44 | int datasize, res, consumed,i; | ||
45 | uint8_t *bit_buffer; | ||
46 | int16_t outbuf[2048] __attribute__((aligned(32))); | ||
47 | uint16_t fs,sps,h; | ||
48 | uint32_t packet_count; | ||
49 | int scrambling_unit_size; | ||
50 | |||
51 | next_track: | ||
52 | if (codec_init()) { | ||
53 | DEBUGF("codec init failed\n"); | ||
54 | return CODEC_ERROR; | ||
55 | } | ||
56 | while (!*ci->taginfo_ready && !ci->stop_codec) | ||
57 | ci->sleep(1); | ||
58 | |||
59 | codec_set_replaygain(ci->id3); | ||
60 | ci->memset(&rmctx,0,sizeof(RMContext)); | ||
61 | ci->memset(&pkt,0,sizeof(RMPacket)); | ||
62 | ci->memset(&q,0,sizeof(COOKContext)); | ||
63 | |||
64 | init_rm(&rmctx); | ||
65 | |||
66 | ci->configure(DSP_SET_FREQUENCY, ci->id3->frequency); | ||
67 | ci->configure(DSP_SET_SAMPLE_DEPTH, 16); | ||
68 | ci->configure(DSP_SET_STEREO_MODE, rmctx.nb_channels == 1 ? | ||
69 | STEREO_MONO : STEREO_INTERLEAVED); | ||
70 | |||
71 | packet_count = rmctx.nb_packets; | ||
72 | rmctx.audio_framesize = rmctx.block_align; | ||
73 | rmctx.block_align = rmctx.sub_packet_size; | ||
74 | fs = rmctx.audio_framesize; | ||
75 | sps= rmctx.block_align; | ||
76 | h = rmctx.sub_packet_h; | ||
77 | scrambling_unit_size = h*fs; | ||
78 | |||
79 | res =cook_decode_init(&rmctx, &q); | ||
80 | if(res < 0) { | ||
81 | DEBUGF("failed to initialize cook decoder\n"); | ||
82 | return CODEC_ERROR; | ||
83 | } | ||
84 | |||
85 | ci->set_elapsed(0); | ||
86 | ci->advance_buffer(rmctx.data_offset + DATA_HEADER_SIZE); | ||
87 | |||
88 | /* The main decoder loop */ | ||
89 | while (1) | ||
90 | { | ||
91 | /*if (ci->seek_time) { | ||
92 | |||
93 | ci->set_elapsed(ci->seek_time); | ||
94 | n = ci->seek_time/10; | ||
95 | memset(buf,0,BUF_SIZE); | ||
96 | ci->seek_complete(); | ||
97 | }*/ | ||
98 | |||
99 | while(packet_count) | ||
100 | { | ||
101 | bit_buffer = (uint8_t *) ci->request_buffer(&buff_size, scrambling_unit_size); | ||
102 | consumed = rm_get_packet(&bit_buffer, &rmctx, &pkt); | ||
103 | if(consumed < 0) { | ||
104 | DEBUGF("rm_get_packet failed\n"); | ||
105 | return CODEC_ERROR; | ||
106 | } | ||
107 | /*DEBUGF(" version = %d\n" | ||
108 | " length = %d\n" | ||
109 | " stream = %d\n" | ||
110 | " timestamp= %d\n",pkt.version,pkt.length,pkt.stream_number,pkt.timestamp);*/ | ||
111 | |||
112 | for(i = 0; i < rmctx.audio_pkt_cnt*(fs/sps) ; i++) | ||
113 | { | ||
114 | ci->yield(); | ||
115 | if (ci->stop_codec || ci->new_track) | ||
116 | goto done; | ||
117 | |||
118 | res = cook_decode_frame(&rmctx,&q, outbuf, &datasize, pkt.frames[i], rmctx.block_align); | ||
119 | rmctx.frame_number++; | ||
120 | |||
121 | /* skip the first two frames; no valid audio */ | ||
122 | if(rmctx.frame_number < 3) continue; | ||
123 | |||
124 | if(res != rmctx.block_align) { | ||
125 | DEBUGF("codec error\n"); | ||
126 | return CODEC_ERROR; | ||
127 | } | ||
128 | |||
129 | ci->pcmbuf_insert(outbuf, NULL, rmctx.samples_pf_pc / rmctx.nb_channels); | ||
130 | ci->set_elapsed(rmctx.audiotimestamp+(1000*8*sps/rmctx.bit_rate)*i); | ||
131 | } | ||
132 | packet_count -= rmctx.audio_pkt_cnt; | ||
133 | rmctx.audio_pkt_cnt = 0; | ||
134 | ci->advance_buffer(consumed); | ||
135 | } | ||
136 | goto done; | ||
137 | |||
138 | } | ||
139 | done : | ||
140 | if (ci->request_next_track()) | ||
141 | goto next_track; | ||
142 | |||
143 | return CODEC_OK; | ||
144 | } | ||