[0] | 1 | //driver_esd.c: |
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| 2 | |
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| 3 | #include "roard.h" |
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| 4 | |
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| 5 | /* |
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| 6 | We could use inst as our fh directly. But esd works with unsigned at 8 bits and |
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| 7 | signed at 16 bits per sample. (why???) so we need to convert because we get signed at both, |
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| 8 | 8 and 16 bits per sample. so we use inst as an array of two ints: 0: fh, 1: are we in 8 bit mode? |
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| 9 | */ |
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| 10 | |
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| 11 | int driver_esd_open(DRIVER_USERDATA_T * inst, char * device, struct roar_audio_info * info) { |
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| 12 | esd_format_t format = ESD_STREAM | ESD_PLAY; |
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| 13 | char name[80] = "roard"; |
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| 14 | int * di = malloc(sizeof(int)*2); |
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| 15 | |
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| 16 | if ( di == NULL ) |
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| 17 | return -1; |
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| 18 | |
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| 19 | *inst = (DRIVER_USERDATA_T)di; |
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| 20 | |
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| 21 | format |= info->bits == 16 ? ESD_BITS16 : ESD_BITS8; |
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| 22 | format |= info->channels == 2 ? ESD_STEREO : ESD_MONO; |
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| 23 | |
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| 24 | di[1] = info->bits == 8; |
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| 25 | |
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| 26 | di[0] = esd_play_stream_fallback(format, info->rate, device, name); |
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| 27 | |
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| 28 | if ( di[0] == -1 ) { |
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| 29 | free(di); |
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| 30 | *inst = NULL; |
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| 31 | return -1; |
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| 32 | } |
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| 33 | |
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| 34 | return 0; |
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| 35 | } |
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| 36 | |
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| 37 | int driver_esd_close(DRIVER_USERDATA_T inst) { |
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| 38 | int fh = *(int*)inst; |
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| 39 | |
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| 40 | free((void*)inst); |
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| 41 | |
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| 42 | return esd_close(fh); |
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| 43 | } |
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| 44 | |
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| 45 | int driver_esd_pause(DRIVER_USERDATA_T inst, int newstate) { |
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| 46 | return -1; |
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| 47 | } |
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| 48 | |
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| 49 | int driver_esd_write(DRIVER_USERDATA_T inst, char * buf, int len) { |
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| 50 | int * di = (int*)inst; |
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| 51 | |
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| 52 | if ( di[1] ) |
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| 53 | roar_conv_codec_s2u8(buf, buf, len); |
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| 54 | |
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| 55 | return write(di[0], buf, len); |
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| 56 | } |
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| 57 | |
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| 58 | int driver_esd_read(DRIVER_USERDATA_T inst, char * buf, int len) { |
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| 59 | return read(*(int*)inst, buf, len); |
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| 60 | } |
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| 61 | |
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| 62 | int driver_esd_flush(DRIVER_USERDATA_T inst) { |
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| 63 | return 0; |
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| 64 | } |
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| 65 | |
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| 66 | //ll |
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