diff options
Diffstat (limited to 'apps/plugins/lib/xxx2wav.c')
| -rw-r--r-- | apps/plugins/lib/xxx2wav.c | 224 |
1 files changed, 224 insertions, 0 deletions
diff --git a/apps/plugins/lib/xxx2wav.c b/apps/plugins/lib/xxx2wav.c new file mode 100644 index 0000000000..92b7050f6d --- /dev/null +++ b/apps/plugins/lib/xxx2wav.c @@ -0,0 +1,224 @@ +/*************************************************************************** + * __________ __ ___. + * Open \______ \ ____ ____ | | _\_ |__ _______ ___ + * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / + * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < + * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ + * \/ \/ \/ \/ \/ + * $Id$ + * + * Copyright (C) 2005 Dave Chapman + * + * All files in this archive are subject to the GNU General Public License. + * See the file COPYING in the source tree root for full license agreement. + * + * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY + * KIND, either express or implied. + * + ****************************************************************************/ + +/* Various "helper functions" common to all the xxx2wav decoder plugins */ + +#include "plugin.h" +#include "xxx2wav.h" + +static struct plugin_api* local_rb; + +int mem_ptr; +int bufsize; +unsigned char* mp3buf; // The actual MP3 buffer from Rockbox +unsigned char* mallocbuf; // 512K from the start of MP3 buffer +unsigned char* filebuf; // The rest of the MP3 buffer + +void* malloc(size_t size) { + void* x; + char s[32]; + + x=&mallocbuf[mem_ptr]; + mem_ptr+=size+(size%4); // Keep memory 32-bit aligned (if it was already?) + + local_rb->snprintf(s,30,"Memory used: %d",mem_ptr); + local_rb->lcd_putsxy(0,80,s); + local_rb->lcd_update(); + return(x); +} + +void* calloc(size_t nmemb, size_t size) { + void* x; + x=malloc(nmemb*size); + local_rb->memset(x,0,nmemb*size); + return(x); +} + +void free(void* ptr) { + (void)ptr; +} + +void* realloc(void* ptr, size_t size) { + void* x; + (void)ptr; + x=malloc(size); + return(x); +} + +void *memcpy(void *dest, const void *src, size_t n) { + return(local_rb->memcpy(dest,src,n)); +} + +void *memset(void *s, int c, size_t n) { + return(local_rb->memset(s,c,n)); +} + +int memcmp(const void *s1, const void *s2, size_t n) { + return(local_rb->memcmp(s1,s2,n)); +} + +void* memmove(const void *s1, const void *s2, size_t n) { + char* dest=(char*)s1; + char* src=(char*)s2; + size_t i; + + for (i=0;i<n;i++) { dest[i]=src[i]; } + // while(n>0) { *(dest++)=*(src++); n--; } + return(dest); +} + +void qsort(void *base, size_t nmemb, size_t size, int(*compar)(const void *, const void *)) { + local_rb->qsort(base,nmemb,size,compar); +} + +void display_status(file_info_struct* file_info) { + char s[32]; + unsigned long ticks_taken; + unsigned long long speed; + unsigned long xspeed; + + local_rb->snprintf(s,32,"Bytes read: %d",file_info->curpos); + local_rb->lcd_putsxy(0,0,s); + local_rb->snprintf(s,32,"Samples Decoded: %d",file_info->current_sample); + local_rb->lcd_putsxy(0,20,s); + local_rb->snprintf(s,32,"Frames Decoded: %d",file_info->frames_decoded); + local_rb->lcd_putsxy(0,40,s); + + ticks_taken=*(local_rb->current_tick)-file_info->start_tick; + + /* e.g.: + ticks_taken=500 + sam_fmt.rate=44,100 + samples_decoded=172,400 + (samples_decoded/sam_fmt.rate)*100=400 (time it should have taken) + % Speed=(400/500)*100=80% + */ + + if (ticks_taken==0) { ticks_taken=1; } // Avoid fp exception. + + speed=(100*file_info->current_sample)/file_info->samplerate; + xspeed=(speed*10000)/ticks_taken; + local_rb->snprintf(s,32,"Speed %ld.%02ld %% Secs: %d",(xspeed/100),(xspeed%100),ticks_taken/100); + local_rb->lcd_putsxy(0,60,s); + + local_rb->lcd_update(); +} + +static unsigned char wav_header[44]={'R','I','F','F', // 0 - ChunkID + 0,0,0,0, // 4 - ChunkSize (filesize-8) + 'W','A','V','E', // 8 - Format + 'f','m','t',' ', // 12 - SubChunkID + 16,0,0,0, // 16 - SubChunk1ID // 16 for PCM + 1,0, // 20 - AudioFormat (1=16-bit) + 2,0, // 22 - NumChannels + 0,0,0,0, // 24 - SampleRate in Hz + 0,0,0,0, // 28 - Byte Rate (SampleRate*NumChannels*(BitsPerSample/8) + 4,0, // 32 - BlockAlign (== NumChannels * BitsPerSample/8) + 16,0, // 34 - BitsPerSample + 'd','a','t','a', // 36 - Subchunk2ID + 0,0,0,0 // 40 - Subchunk2Size + }; + + +int local_init(char* infilename, char* outfilename, file_info_struct* file_info, struct plugin_api* rb) { + char s[32]; + int i,n,bytesleft; + + local_rb=rb; + + mem_ptr=0; + mp3buf=local_rb->plugin_get_mp3_buffer(&bufsize); + mallocbuf=mp3buf; + filebuf=&mp3buf[MALLOC_BUFSIZE]; + + local_rb->snprintf(s,32,"mp3 bufsize: %d",bufsize); + local_rb->lcd_putsxy(0,100,s); + local_rb->lcd_update(); + + file_info->infile=local_rb->open(infilename,O_RDONLY); + file_info->outfile=local_rb->creat(outfilename,O_WRONLY); + local_rb->write(file_info->outfile,wav_header,sizeof(wav_header)); + file_info->curpos=0; + file_info->current_sample=0; + file_info->frames_decoded=0; + file_info->filesize=local_rb->filesize(file_info->infile); + + if (file_info->filesize > (bufsize-MALLOC_BUFSIZE)) { + local_rb->close(file_info->infile); + local_rb->splash(HZ*2, true, "File too large"); + return(1); + } + + local_rb->snprintf(s,32,"Loading file..."); + local_rb->lcd_putsxy(0,0,s); + local_rb->lcd_update(); + + bytesleft=file_info->filesize; + i=0; + while (bytesleft > 0) { + n=local_rb->read(file_info->infile,&filebuf[i],bytesleft); + if (n < 0) { + local_rb->close(file_info->infile); + local_rb->splash(HZ*2, true, "ERROR READING FILE"); + return(1); + } + i+=n; bytesleft-=n; + } + local_rb->close(file_info->infile); + return(0); +} + +void close_wav(file_info_struct* file_info) { + int x; + int filesize=local_rb->filesize(file_info->outfile); + + /* We assume 16-bit, Stereo */ + + local_rb->lseek(file_info->outfile,0,SEEK_SET); + + // ChunkSize + x=filesize-8; + wav_header[4]=(x&0xff); + wav_header[5]=(x&0xff00)>>8; + wav_header[6]=(x&0xff0000)>>16; + wav_header[7]=(x&0xff000000)>>24; + + // Samplerate + wav_header[24]=file_info->samplerate&0xff; + wav_header[25]=(file_info->samplerate&0xff00)>>8; + wav_header[26]=(file_info->samplerate&0xff0000)>>16; + wav_header[27]=(file_info->samplerate&0xff000000)>>24; + + // ByteRate + x=file_info->samplerate*4; + wav_header[28]=(x&0xff); + wav_header[29]=(x&0xff00)>>8; + wav_header[30]=(x&0xff0000)>>16; + wav_header[31]=(x&0xff000000)>>24; + + // Subchunk2Size + x=filesize-44; + wav_header[40]=(x&0xff); + wav_header[41]=(x&0xff00)>>8; + wav_header[42]=(x&0xff0000)>>16; + wav_header[43]=(x&0xff000000)>>24; + + local_rb->write(file_info->outfile,wav_header,sizeof(wav_header)); + local_rb->close(file_info->outfile); +} |