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path: root/apps/plugins/bitmaps/remote_native/clock_binary_remote.112x64x1.bmp
blob: a42401c293476a82511729bb8a0ae1d21112c304 (plain)
ofshex dumpascii
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generated by cgit v1.1 at 2026-05-16 21:35:27 +0000
"hl opt">,'A','V','E',// 8 - Format 'f','m','t',' ',// 12 - SubChunkID 16,0,0,0, // 16 - SubChunk1ID // 16 for PCM 1,0, // 20 - AudioFormat (1=Uncompressed) 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 open_wav(char* filename) { int fd; fd=open(filename,O_CREAT|O_WRONLY|O_TRUNC,S_IRUSR|S_IWUSR); if (fd >= 0) { write(fd,wav_header,sizeof(wav_header)); } return(fd); } void close_wav(int fd, FLACContext* fc) { int x; int filesize; int bytespersample; bytespersample=fc->bps/8; filesize=fc->totalsamples*bytespersample*fc->channels+44; // 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; // Number of channels wav_header[22]=fc->channels; // Samplerate wav_header[24]=fc->samplerate&0xff; wav_header[25]=(fc->samplerate&0xff00)>>8; wav_header[26]=(fc->samplerate&0xff0000)>>16; wav_header[27]=(fc->samplerate&0xff000000)>>24; // ByteRate x=fc->samplerate*(fc->bps/8)*fc->channels; wav_header[28]=(x&0xff); wav_header[29]=(x&0xff00)>>8; wav_header[30]=(x&0xff0000)>>16; wav_header[31]=(x&0xff000000)>>24; // BlockAlign wav_header[32]=(fc->bps/8)*fc->channels; // Bits per sample wav_header[34]=fc->bps; // 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; lseek(fd,0,SEEK_SET); write(fd,wav_header,sizeof(wav_header)); close(fd); } static void dump_headers(FLACContext *s) { fprintf(stderr," Blocksize: %d .. %d\n", s->min_blocksize, s->max_blocksize); fprintf(stderr," Framesize: %d .. %d\n", s->min_framesize, s->max_framesize); fprintf(stderr," Samplerate: %d\n", s->samplerate); fprintf(stderr," Channels: %d\n", s->channels); fprintf(stderr," Bits per sample: %d\n", s->bps); fprintf(stderr," Metadata length: %d\n", s->metadatalength); fprintf(stderr," Total Samples: %lu\n",s->totalsamples); fprintf(stderr," Duration: %d ms\n",s->length); fprintf(stderr," Bitrate: %d kbps\n",s->bitrate); } static bool flac_init(int fd, FLACContext* fc) { unsigned char buf[255]; struct stat statbuf; bool found_streaminfo=false; int endofmetadata=0; int blocklength; uint32_t* p; uint32_t seekpoint_lo,seekpoint_hi; uint32_t offset_lo,offset_hi; int n; if (lseek(fd, 0, SEEK_SET) < 0) { return false; } if (read(fd, buf, 4) < 4) { return false; } if (memcmp(buf,"fLaC",4) != 0) { return false; } fc->metadatalength = 4; while (!endofmetadata) { if (read(fd, buf, 4) < 4) { return false; } endofmetadata=(buf[0]&0x80); blocklength = (buf[1] << 16) | (buf[2] << 8) | buf[3]; fc->metadatalength+=blocklength+4; if ((buf[0] & 0x7f) == 0) /* 0 is the STREAMINFO block */ { /* FIXME: Don't trust the value of blocklength */ if (read(fd, buf, blocklength) < 0) { return false; } fstat(fd,&statbuf); fc->filesize = statbuf.st_size; fc->min_blocksize = (buf[0] << 8) | buf[1]; fc->max_blocksize = (buf[2] << 8) | buf[3]; fc->min_framesize = (buf[4] << 16) | (buf[5] << 8) | buf[6]; fc->max_framesize = (buf[7] << 16) | (buf[8] << 8) | buf[9]; fc->samplerate = (buf[10] << 12) | (buf[11] << 4) | ((buf[12] & 0xf0) >> 4); fc->channels = ((buf[12]&0x0e)>>1) + 1; fc->bps = (((buf[12]&0x01) << 4) | ((buf[13]&0xf0)>>4) ) + 1; /* totalsamples is a 36-bit field, but we assume <= 32 bits are used */ fc->totalsamples = (buf[14] << 24) | (buf[15] << 16) | (buf[16] << 8) | buf[17]; /* Calculate track length (in ms) and estimate the bitrate (in kbit/s) */ fc->length = (fc->totalsamples / fc->samplerate) * 1000; found_streaminfo=true; } else if ((buf[0] & 0x7f) == 3) { /* 3 is the SEEKTABLE block */ fprintf(stderr,"Seektable length = %d bytes\n",blocklength); while (blocklength >= 18) { n=read(fd,buf,18); if (n < 18) return false; blocklength-=n; p=(uint32_t*)buf; seekpoint_hi=betoh32(*(p++)); seekpoint_lo=betoh32(*(p++)); offset_hi=betoh32(*(p++)); offset_lo=betoh32(*(p++)); if ((seekpoint_hi != 0xffffffff) && (seekpoint_lo != 0xffffffff)) { fprintf(stderr,"Seekpoint: %u, Offset=%u\n",seekpoint_lo,offset_lo); } } lseek(fd, blocklength, SEEK_CUR); } else { /* Skip to next metadata block */ if (lseek(fd, blocklength, SEEK_CUR) < 0) { return false; } } } if (found_streaminfo) { fc->bitrate = ((fc->filesize-fc->metadatalength) * 8) / fc->length; return true; } else { return false; } } /* Dummy function needed to pass to flac_decode_frame() */ void yield() { } int main(int argc, char* argv[]) { FLACContext fc; int fd,fdout; int n; int i; int bytesleft; int consumed; unsigned char buf[MAX_FRAMESIZE]; /* The input buffer */ /* The output buffers containing the decoded samples (channels 0 and 1) */ int32_t decoded0[MAX_BLOCKSIZE]; int32_t decoded1[MAX_BLOCKSIZE]; /* For testing */ int8_t wavbuf[MAX_CHANNELS*MAX_BLOCKSIZE*3]; int8_t* p; int scale; fd=open(argv[1],O_RDONLY); if (fd < 0) { fprintf(stderr,"Can not parse %s\n",argv[1]); return(1); } /* Read the metadata and position the file pointer at the start of the first audio frame */ flac_init(fd,&fc); dump_headers(&fc); fdout=open_wav("test.wav"); bytesleft=read(fd,buf,sizeof(buf)); while (bytesleft) { if(flac_decode_frame(&fc,decoded0,decoded1,buf,bytesleft,yield) < 0) { fprintf(stderr,"DECODE ERROR, ABORTING\n"); break; } consumed=fc.gb.index/8; scale=FLAC_OUTPUT_DEPTH-fc.bps; p=wavbuf; for (i=0;i<fc.blocksize;i++) { /* Left sample */ decoded0[i]=decoded0[i]>>scale; *(p++)=decoded0[i]&0xff; *(p++)=(decoded0[i]&0xff00)>>8; if (fc.bps==24) *(p++)=(decoded0[i]&0xff0000)>>16; if (fc.channels==2) { /* Right sample */ decoded1[i]=decoded1[i]>>scale; *(p++)=decoded1[i]&0xff; *(p++)=(decoded1[i]&0xff00)>>8; if (fc.bps==24) *(p++)=(decoded1[i]&0xff0000)>>16; } } write(fdout,wavbuf,fc.blocksize*fc.channels*(fc.bps/8)); memmove(buf,&buf[consumed],bytesleft-consumed); bytesleft-=consumed; n=read(fd,&buf[bytesleft],sizeof(buf)-bytesleft); if (n > 0) { bytesleft+=n; } } close_wav(fdout,&fc); close(fd); return(0); }
generated by cgit v1.1 at 2026-05-16 21:35:27 +0000