You can use two mode time setting. (1) receive real time from NTP server (2) manual setting.Before startup, it should be download some voice file into micro SD-card.
Dependencies: FatFileSystem mbed HTTPClient_ToBeRemoved TextLCD HTTPServer NTPClient_NetServices EthernetNetIf
wavplayer.cpp@1:8816ea8be54b, 2014-06-22 (annotated)
- Committer:
- y_notsu
- Date:
- Sun Jun 22 05:12:34 2014 +0000
- Revision:
- 1:8816ea8be54b
- Parent:
- 0:ae31fe6f181c
Talk Watch using NTP client for JBB
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
y_notsu | 0:ae31fe6f181c | 1 | /* |
y_notsu | 0:ae31fe6f181c | 2 | Library wave file player by Tom Coxon |
y_notsu | 0:ae31fe6f181c | 3 | |
y_notsu | 0:ae31fe6f181c | 4 | Based on WAVEplayer by Vlad Cazan/Stephan Rochon modified by Tom Coxon to: |
y_notsu | 0:ae31fe6f181c | 5 | |
y_notsu | 0:ae31fe6f181c | 6 | 1. Run correctly on the Embedded Artists LPCXpresso baseboard. |
y_notsu | 0:ae31fe6f181c | 7 | 2. To play 8 bit sample size in addition to original 16 bit |
y_notsu | 0:ae31fe6f181c | 8 | 3. To be more fault tolerant when playing wav files. |
y_notsu | 0:ae31fe6f181c | 9 | */ |
y_notsu | 0:ae31fe6f181c | 10 | |
y_notsu | 0:ae31fe6f181c | 11 | #include "wavplayer.h" |
y_notsu | 0:ae31fe6f181c | 12 | |
y_notsu | 0:ae31fe6f181c | 13 | Ticker tick; |
y_notsu | 0:ae31fe6f181c | 14 | |
y_notsu | 0:ae31fe6f181c | 15 | AnalogOut DACout(p18); |
y_notsu | 0:ae31fe6f181c | 16 | |
y_notsu | 0:ae31fe6f181c | 17 | void WavPlayer::dac_out() { |
y_notsu | 0:ae31fe6f181c | 18 | if (DAC_on) { |
y_notsu | 0:ae31fe6f181c | 19 | DACout.write_u16(DAC_fifo[DAC_rptr]); |
y_notsu | 0:ae31fe6f181c | 20 | DAC_rptr=(DAC_rptr+1) & 0xff; |
y_notsu | 0:ae31fe6f181c | 21 | } |
y_notsu | 0:ae31fe6f181c | 22 | } |
y_notsu | 0:ae31fe6f181c | 23 | |
y_notsu | 0:ae31fe6f181c | 24 | //void play_wave(char *wavname) { |
y_notsu | 0:ae31fe6f181c | 25 | void WavPlayer::play_wave(char *wavname) { |
y_notsu | 0:ae31fe6f181c | 26 | unsigned chunk_id,chunk_size,channel; |
y_notsu | 0:ae31fe6f181c | 27 | unsigned data,samp_int,i; |
y_notsu | 0:ae31fe6f181c | 28 | short dac_data; |
y_notsu | 0:ae31fe6f181c | 29 | char *slice_buf; |
y_notsu | 0:ae31fe6f181c | 30 | short *data_sptr; |
y_notsu | 0:ae31fe6f181c | 31 | FMT_STRUCT wav_format; |
y_notsu | 0:ae31fe6f181c | 32 | FILE *wavfile; |
y_notsu | 0:ae31fe6f181c | 33 | long slice,num_slices; |
y_notsu | 0:ae31fe6f181c | 34 | DAC_wptr=0; |
y_notsu | 0:ae31fe6f181c | 35 | DAC_rptr=0; |
y_notsu | 0:ae31fe6f181c | 36 | |
y_notsu | 0:ae31fe6f181c | 37 | size_t result; |
y_notsu | 0:ae31fe6f181c | 38 | |
y_notsu | 0:ae31fe6f181c | 39 | for (i=0;i<256;i+=2) { |
y_notsu | 0:ae31fe6f181c | 40 | DAC_fifo[i]=0; |
y_notsu | 0:ae31fe6f181c | 41 | DAC_fifo[i+1]=3000; |
y_notsu | 0:ae31fe6f181c | 42 | } |
y_notsu | 0:ae31fe6f181c | 43 | DAC_wptr=4; |
y_notsu | 0:ae31fe6f181c | 44 | DAC_on=0; |
y_notsu | 0:ae31fe6f181c | 45 | |
y_notsu | 0:ae31fe6f181c | 46 | printf("Playing wave file '%s'\r\n",wavname); |
y_notsu | 0:ae31fe6f181c | 47 | |
y_notsu | 0:ae31fe6f181c | 48 | wavfile=fopen(wavname,"rb"); |
y_notsu | 0:ae31fe6f181c | 49 | if (!wavfile) { |
y_notsu | 0:ae31fe6f181c | 50 | printf("Unable to open wav file '%s'\r\n",wavname); |
y_notsu | 0:ae31fe6f181c | 51 | exit(1); |
y_notsu | 0:ae31fe6f181c | 52 | } |
y_notsu | 0:ae31fe6f181c | 53 | |
y_notsu | 0:ae31fe6f181c | 54 | fread(&chunk_id,4,1,wavfile); |
y_notsu | 0:ae31fe6f181c | 55 | fread(&chunk_size,4,1,wavfile); |
y_notsu | 0:ae31fe6f181c | 56 | while (!feof(wavfile)) { |
y_notsu | 0:ae31fe6f181c | 57 | printf("Read chunk ID 0x%x, size 0x%x\r\n",chunk_id,chunk_size); |
y_notsu | 0:ae31fe6f181c | 58 | switch (chunk_id) { |
y_notsu | 0:ae31fe6f181c | 59 | case 0x46464952: |
y_notsu | 0:ae31fe6f181c | 60 | fread(&data,4,1,wavfile); |
y_notsu | 0:ae31fe6f181c | 61 | printf("RIFF chunk\r\n"); |
y_notsu | 0:ae31fe6f181c | 62 | printf(" chunk size %d (0x%x)\r\n",chunk_size,chunk_size); |
y_notsu | 0:ae31fe6f181c | 63 | printf(" RIFF type 0x%x\r\n",data); |
y_notsu | 0:ae31fe6f181c | 64 | break; |
y_notsu | 0:ae31fe6f181c | 65 | case 0x20746d66: |
y_notsu | 0:ae31fe6f181c | 66 | fread(&wav_format,sizeof(wav_format),1,wavfile); |
y_notsu | 0:ae31fe6f181c | 67 | printf("FORMAT chunk\r\n"); |
y_notsu | 0:ae31fe6f181c | 68 | printf(" chunk size %d (0x%x)\r\n",chunk_size,chunk_size); |
y_notsu | 0:ae31fe6f181c | 69 | printf(" compression code %d\r\n",wav_format.comp_code); |
y_notsu | 0:ae31fe6f181c | 70 | printf(" %d channels\r\n",wav_format.num_channels); |
y_notsu | 0:ae31fe6f181c | 71 | printf(" %d samples/sec\r\n",wav_format.sample_rate); |
y_notsu | 0:ae31fe6f181c | 72 | printf(" %d bytes/sec\r\n",wav_format.avg_Bps); |
y_notsu | 0:ae31fe6f181c | 73 | printf(" block align %d\r\n",wav_format.block_align); |
y_notsu | 0:ae31fe6f181c | 74 | printf(" %d bits per sample\r\n",wav_format.sig_bps); |
y_notsu | 0:ae31fe6f181c | 75 | if (chunk_size > sizeof(wav_format)) |
y_notsu | 0:ae31fe6f181c | 76 | fseek(wavfile,chunk_size-sizeof(wav_format),SEEK_CUR); |
y_notsu | 0:ae31fe6f181c | 77 | // create a slice buffer large enough to hold multiple slices |
y_notsu | 0:ae31fe6f181c | 78 | slice_buf=(char *)malloc(wav_format.block_align*SLICE_BUF_SIZE); |
y_notsu | 0:ae31fe6f181c | 79 | if (!slice_buf) { |
y_notsu | 0:ae31fe6f181c | 80 | printf("Unable to malloc slice buffer"); |
y_notsu | 0:ae31fe6f181c | 81 | exit(1); |
y_notsu | 0:ae31fe6f181c | 82 | } |
y_notsu | 0:ae31fe6f181c | 83 | break; |
y_notsu | 0:ae31fe6f181c | 84 | case 0x61746164: |
y_notsu | 0:ae31fe6f181c | 85 | slice_buf=(char *)malloc(wav_format.block_align*SLICE_BUF_SIZE); |
y_notsu | 0:ae31fe6f181c | 86 | if (!slice_buf) { |
y_notsu | 0:ae31fe6f181c | 87 | printf("Unable to malloc slice buffer"); |
y_notsu | 0:ae31fe6f181c | 88 | exit(1); |
y_notsu | 0:ae31fe6f181c | 89 | } |
y_notsu | 0:ae31fe6f181c | 90 | num_slices=chunk_size/wav_format.block_align; |
y_notsu | 0:ae31fe6f181c | 91 | printf("DATA chunk\r\n"); |
y_notsu | 0:ae31fe6f181c | 92 | printf(" chunk size %d (0x%x)\r\n",chunk_size,chunk_size); |
y_notsu | 0:ae31fe6f181c | 93 | printf(" %d slices\r\n",num_slices); |
y_notsu | 0:ae31fe6f181c | 94 | printf(" Ideal sample interval=%d\r\n",(unsigned)(1000000.0/wav_format.sample_rate)); |
y_notsu | 0:ae31fe6f181c | 95 | samp_int=1000000/(wav_format.sample_rate); |
y_notsu | 0:ae31fe6f181c | 96 | printf(" programmed interrupt tick interval=%d\r\n",samp_int); |
y_notsu | 0:ae31fe6f181c | 97 | |
y_notsu | 0:ae31fe6f181c | 98 | // starting up ticker to write samples out -- no printfs until tick.detach is called |
y_notsu | 0:ae31fe6f181c | 99 | tick.attach_us(this,&WavPlayer::dac_out, samp_int); |
y_notsu | 0:ae31fe6f181c | 100 | DAC_on=1; |
y_notsu | 0:ae31fe6f181c | 101 | for (slice=0;slice<num_slices;slice+=SLICE_BUF_SIZE) { |
y_notsu | 0:ae31fe6f181c | 102 | |
y_notsu | 0:ae31fe6f181c | 103 | result = fread(slice_buf,wav_format.block_align*SLICE_BUF_SIZE,1,wavfile); |
y_notsu | 0:ae31fe6f181c | 104 | if (feof(wavfile)) { |
y_notsu | 0:ae31fe6f181c | 105 | printf("Oops -- not enough slices in the wave file\r\n"); |
y_notsu | 0:ae31fe6f181c | 106 | |
y_notsu | 0:ae31fe6f181c | 107 | break; |
y_notsu | 0:ae31fe6f181c | 108 | } |
y_notsu | 0:ae31fe6f181c | 109 | |
y_notsu | 0:ae31fe6f181c | 110 | data_sptr=(short *)slice_buf; |
y_notsu | 0:ae31fe6f181c | 111 | for (i=0;i<SLICE_BUF_SIZE;i++) { |
y_notsu | 0:ae31fe6f181c | 112 | dac_data=0; |
y_notsu | 0:ae31fe6f181c | 113 | |
y_notsu | 0:ae31fe6f181c | 114 | // for a stereo wave file average the two channels. |
y_notsu | 0:ae31fe6f181c | 115 | for (channel=0;channel<wav_format.num_channels;channel++) { |
y_notsu | 0:ae31fe6f181c | 116 | switch (wav_format.sig_bps) { |
y_notsu | 0:ae31fe6f181c | 117 | case 16: |
y_notsu | 0:ae31fe6f181c | 118 | dac_data+=( ((int)(*data_sptr++)) +32768 ); |
y_notsu | 0:ae31fe6f181c | 119 | break; |
y_notsu | 0:ae31fe6f181c | 120 | case 8: |
y_notsu | 0:ae31fe6f181c | 121 | dac_data+=( ((int)(*data_sptr++)) +32768 <<8); |
y_notsu | 0:ae31fe6f181c | 122 | break; |
y_notsu | 0:ae31fe6f181c | 123 | } |
y_notsu | 0:ae31fe6f181c | 124 | } |
y_notsu | 0:ae31fe6f181c | 125 | DAC_fifo[DAC_wptr]=dac_data; |
y_notsu | 0:ae31fe6f181c | 126 | DAC_wptr=(DAC_wptr+1) & 0xff; |
y_notsu | 0:ae31fe6f181c | 127 | while (DAC_wptr==DAC_rptr) { |
y_notsu | 0:ae31fe6f181c | 128 | wait_us(10); |
y_notsu | 0:ae31fe6f181c | 129 | } |
y_notsu | 0:ae31fe6f181c | 130 | } |
y_notsu | 0:ae31fe6f181c | 131 | } |
y_notsu | 0:ae31fe6f181c | 132 | DAC_on=0; |
y_notsu | 0:ae31fe6f181c | 133 | tick.detach(); |
y_notsu | 0:ae31fe6f181c | 134 | printf("Ticker detached\r\n"); |
y_notsu | 0:ae31fe6f181c | 135 | free(slice_buf); |
y_notsu | 0:ae31fe6f181c | 136 | break; |
y_notsu | 0:ae31fe6f181c | 137 | case 0x5453494c: |
y_notsu | 0:ae31fe6f181c | 138 | printf("INFO chunk, size %d\r\n",chunk_size); |
y_notsu | 0:ae31fe6f181c | 139 | fseek(wavfile,chunk_size,SEEK_CUR); |
y_notsu | 0:ae31fe6f181c | 140 | break; |
y_notsu | 0:ae31fe6f181c | 141 | default: |
y_notsu | 0:ae31fe6f181c | 142 | printf("unknown chunk type 0x%x, size %d\r\n",chunk_id,chunk_size); |
y_notsu | 0:ae31fe6f181c | 143 | data=fseek(wavfile,chunk_size,SEEK_CUR); |
y_notsu | 0:ae31fe6f181c | 144 | break; |
y_notsu | 0:ae31fe6f181c | 145 | } |
y_notsu | 0:ae31fe6f181c | 146 | fread(&chunk_id,4,1,wavfile); |
y_notsu | 0:ae31fe6f181c | 147 | fread(&chunk_size,4,1,wavfile); |
y_notsu | 0:ae31fe6f181c | 148 | } |
y_notsu | 0:ae31fe6f181c | 149 | printf("++++++++++++ Done with wave file ++++++++++\r\n"); |
y_notsu | 0:ae31fe6f181c | 150 | fclose(wavfile); |
y_notsu | 0:ae31fe6f181c | 151 | } |
y_notsu | 0:ae31fe6f181c | 152 | |
y_notsu | 0:ae31fe6f181c | 153 |