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author | Dave Chapman <dave@dchapman.com> | 2005-02-16 15:13:39 +0000 |
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committer | Dave Chapman <dave@dchapman.com> | 2005-02-16 15:13:39 +0000 |
commit | 594b690af2df95d14cb927c6fff6717461d4873e (patch) | |
tree | 2ed1fe075c82c0ab44f985f79fa5543fef31f723 /apps/plugins/xxx2wav.h | |
parent | 253094cb1f9ecfd468203a4ef1ebb73b6bcc2974 (diff) | |
download | rockbox-594b690af2df95d14cb927c6fff6717461d4873e.tar.gz rockbox-594b690af2df95d14cb927c6fff6717461d4873e.zip |
Start to clean up a52towav.c and move common xxx2wav code into xxx2wav.h
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@5979 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'apps/plugins/xxx2wav.h')
-rw-r--r-- | apps/plugins/xxx2wav.h | 240 |
1 files changed, 240 insertions, 0 deletions
diff --git a/apps/plugins/xxx2wav.h b/apps/plugins/xxx2wav.h new file mode 100644 index 0000000000..96942824fd --- /dev/null +++ b/apps/plugins/xxx2wav.h | |||
@@ -0,0 +1,240 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id$ | ||
9 | * | ||
10 | * Copyright (C) 2005 Dave Chapman | ||
11 | * | ||
12 | * All files in this archive are subject to the GNU General Public License. | ||
13 | * See the file COPYING in the source tree root for full license agreement. | ||
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 | /* Various "helper functions" common to all the xxx2wav decoder plugins | ||
21 | |||
22 | We include them as a .h because the plugin build system links | ||
23 | exactly one .c file with exactly one .rock file. | ||
24 | */ | ||
25 | |||
26 | |||
27 | /* the main data structure of the program */ | ||
28 | typedef struct { | ||
29 | int infile; | ||
30 | int outfile; | ||
31 | off_t curpos; | ||
32 | off_t filesize; | ||
33 | int samplerate; | ||
34 | int channels; | ||
35 | int frames_decoded; | ||
36 | unsigned long total_samples; | ||
37 | unsigned long current_sample; | ||
38 | unsigned long start_tick; | ||
39 | } file_info_struct; | ||
40 | |||
41 | file_info_struct file_info; | ||
42 | |||
43 | #define MALLOC_BUFSIZE (512*1024) | ||
44 | |||
45 | int mem_ptr; | ||
46 | int bufsize; | ||
47 | unsigned char* mp3buf; // The actual MP3 buffer from Rockbox | ||
48 | unsigned char* mallocbuf; // 512K from the start of MP3 buffer | ||
49 | unsigned char* filebuf; // The rest of the MP3 buffer | ||
50 | |||
51 | void* malloc(size_t size) { | ||
52 | void* x; | ||
53 | char s[32]; | ||
54 | |||
55 | x=&mallocbuf[mem_ptr]; | ||
56 | mem_ptr+=size+(size%4); // Keep memory 32-bit aligned (if it was already?) | ||
57 | |||
58 | rb->snprintf(s,30,"Memory used: %d\r",mem_ptr); | ||
59 | rb->lcd_putsxy(0,80,s); | ||
60 | rb->lcd_update(); | ||
61 | return(x); | ||
62 | } | ||
63 | |||
64 | void* calloc(size_t nmemb, size_t size) { | ||
65 | void* x; | ||
66 | x=malloc(nmemb*size); | ||
67 | rb->memset(x,0,nmemb*size); | ||
68 | return(x); | ||
69 | } | ||
70 | |||
71 | void free(void* ptr) { | ||
72 | (void)ptr; | ||
73 | } | ||
74 | |||
75 | void* realloc(void* ptr, size_t size) { | ||
76 | void* x; | ||
77 | (void)ptr; | ||
78 | x=malloc(size); | ||
79 | return(x); | ||
80 | } | ||
81 | |||
82 | void *memcpy(void *dest, const void *src, size_t n) { | ||
83 | return(rb->memcpy(dest,src,n)); | ||
84 | } | ||
85 | |||
86 | void *memset(void *s, int c, size_t n) { | ||
87 | return(rb->memset(s,c,n)); | ||
88 | } | ||
89 | |||
90 | int memcmp(const void *s1, const void *s2, size_t n) { | ||
91 | return(rb->memcmp(s1,s2,n)); | ||
92 | } | ||
93 | |||
94 | void* memmove(const void *s1, const void *s2, size_t n) { | ||
95 | char* dest=(char*)s1; | ||
96 | char* src=(char*)s2; | ||
97 | size_t i; | ||
98 | |||
99 | for (i=0;i<n;i++) { dest[i]=src[i]; } | ||
100 | // while(n>0) { *(dest++)=*(src++); n--; } | ||
101 | return(dest); | ||
102 | } | ||
103 | |||
104 | void qsort(void *base, size_t nmemb, size_t size, int(*compar)(const void *, const void *)) { | ||
105 | rb->qsort(base,nmemb,size,compar); | ||
106 | } | ||
107 | |||
108 | void display_status(file_info_struct* file_info) { | ||
109 | char s[32]; | ||
110 | unsigned long ticks_taken; | ||
111 | unsigned long long speed; | ||
112 | unsigned long xspeed; | ||
113 | |||
114 | rb->snprintf(s,32,"Bytes read: %d\r",file_info->curpos); | ||
115 | rb->lcd_putsxy(0,0,s); | ||
116 | rb->snprintf(s,32,"Samples Decoded: %d\r",file_info->current_sample); | ||
117 | rb->lcd_putsxy(0,20,s); | ||
118 | rb->snprintf(s,32,"Frames Decoded: %d\r",file_info->frames_decoded); | ||
119 | rb->lcd_putsxy(0,40,s); | ||
120 | |||
121 | ticks_taken=*(rb->current_tick)-file_info->start_tick; | ||
122 | |||
123 | /* e.g.: | ||
124 | ticks_taken=500 | ||
125 | sam_fmt.rate=44,100 | ||
126 | samples_decoded=172,400 | ||
127 | (samples_decoded/sam_fmt.rate)*100=400 (time it should have taken) | ||
128 | % Speed=(400/500)*100=80% | ||
129 | */ | ||
130 | |||
131 | if (ticks_taken==0) { ticks_taken=1; } // Avoid fp exception. | ||
132 | |||
133 | speed=(100*file_info->current_sample)/file_info->samplerate; | ||
134 | xspeed=(speed*10000)/ticks_taken; | ||
135 | rb->snprintf(s,32,"Speed %ld.%02ld %% Secs: %d",(xspeed/100),(xspeed%100),ticks_taken/100); | ||
136 | rb->lcd_putsxy(0,60,s); | ||
137 | |||
138 | rb->lcd_update(); | ||
139 | } | ||
140 | |||
141 | static unsigned char wav_header[44]={'R','I','F','F', // 0 - ChunkID | ||
142 | 0,0,0,0, // 4 - ChunkSize (filesize-8) | ||
143 | 'W','A','V','E', // 8 - Format | ||
144 | 'f','m','t',' ', // 12 - SubChunkID | ||
145 | 16,0,0,0, // 16 - SubChunk1ID // 16 for PCM | ||
146 | 1,0, // 20 - AudioFormat (1=16-bit) | ||
147 | 2,0, // 22 - NumChannels | ||
148 | 0,0,0,0, // 24 - SampleRate in Hz | ||
149 | 0,0,0,0, // 28 - Byte Rate (SampleRate*NumChannels*(BitsPerSample/8) | ||
150 | 4,0, // 32 - BlockAlign (== NumChannels * BitsPerSample/8) | ||
151 | 16,0, // 34 - BitsPerSample | ||
152 | 'd','a','t','a', // 36 - Subchunk2ID | ||
153 | 0,0,0,0 // 40 - Subchunk2Size | ||
154 | }; | ||
155 | |||
156 | |||
157 | int local_init(char* file, file_info_struct* file_info) { | ||
158 | char s[32]; | ||
159 | int i,n,bytesleft; | ||
160 | |||
161 | mem_ptr=0; | ||
162 | mp3buf=rb->plugin_get_mp3_buffer(&bufsize); | ||
163 | mallocbuf=mp3buf; | ||
164 | filebuf=&mp3buf[MALLOC_BUFSIZE]; | ||
165 | |||
166 | rb->snprintf(s,32,"mp3 bufsize: %d\r",bufsize); | ||
167 | rb->lcd_putsxy(0,100,s); | ||
168 | rb->lcd_update(); | ||
169 | |||
170 | file_info->infile=rb->open(file,O_RDONLY); | ||
171 | file_info->outfile=rb->creat("/ac3test.wav",O_WRONLY); | ||
172 | rb->write(file_info->outfile,wav_header,sizeof(wav_header)); | ||
173 | file_info->curpos=0; | ||
174 | file_info->frames_decoded=0; | ||
175 | file_info->filesize=rb->filesize(file_info->infile); | ||
176 | |||
177 | if (file_info->filesize > (bufsize-MALLOC_BUFSIZE)) { | ||
178 | rb->close(file_info->infile); | ||
179 | rb->splash(HZ*2, true, "File too large"); | ||
180 | return(1); | ||
181 | } | ||
182 | |||
183 | rb->snprintf(s,32,"Loading file..."); | ||
184 | rb->lcd_putsxy(0,0,s); | ||
185 | rb->lcd_update(); | ||
186 | |||
187 | bytesleft=file_info->filesize; | ||
188 | i=0; | ||
189 | while (bytesleft > 0) { | ||
190 | n=rb->read(file_info->infile,&filebuf[i],bytesleft); | ||
191 | if (n < 0) { | ||
192 | rb->close(file_info->infile); | ||
193 | rb->splash(HZ*2, true, "ERROR READING FILE"); | ||
194 | return(1); | ||
195 | } | ||
196 | i+=n; bytesleft-=n; | ||
197 | } | ||
198 | rb->close(file_info->infile); | ||
199 | return(0); | ||
200 | } | ||
201 | |||
202 | void close_wav(file_info_struct* file_info) { | ||
203 | int x; | ||
204 | int filesize=rb->filesize(file_info->outfile); | ||
205 | |||
206 | /* We assume 16-bit, Stereo */ | ||
207 | |||
208 | rb->lseek(file_info->outfile,0,SEEK_SET); | ||
209 | |||
210 | // ChunkSize | ||
211 | x=filesize-8; | ||
212 | wav_header[4]=(x&0xff); | ||
213 | wav_header[5]=(x&0xff00)>>8; | ||
214 | wav_header[6]=(x&0xff0000)>>16; | ||
215 | wav_header[7]=(x&0xff000000)>>24; | ||
216 | |||
217 | // Samplerate | ||
218 | wav_header[24]=file_info->samplerate&0xff; | ||
219 | wav_header[25]=(file_info->samplerate&0xff00)>>8; | ||
220 | wav_header[26]=(file_info->samplerate&0xff0000)>>16; | ||
221 | wav_header[27]=(file_info->samplerate&0xff000000)>>24; | ||
222 | |||
223 | // ByteRate | ||
224 | x=file_info->samplerate*4; | ||
225 | wav_header[28]=(x&0xff); | ||
226 | wav_header[29]=(x&0xff00)>>8; | ||
227 | wav_header[30]=(x&0xff0000)>>16; | ||
228 | wav_header[31]=(x&0xff000000)>>24; | ||
229 | |||
230 | // Subchunk2Size | ||
231 | x=filesize-44; | ||
232 | wav_header[40]=(x&0xff); | ||
233 | wav_header[41]=(x&0xff00)>>8; | ||
234 | wav_header[42]=(x&0xff0000)>>16; | ||
235 | wav_header[43]=(x&0xff000000)>>24; | ||
236 | |||
237 | rb->write(file_info->outfile,wav_header,sizeof(wav_header)); | ||
238 | rb->close(file_info->outfile); | ||
239 | } | ||
240 | |||