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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 | int driver_ao_open(DRIVER_USERDATA_T * inst, char * device, struct roar_audio_info * info) { |
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6 | ao_device * aodevice; |
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7 | ao_sample_format format; |
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8 | int driver; |
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9 | |
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10 | ao_initialize(); |
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11 | |
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12 | if ( device == NULL ) { |
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13 | driver = ao_default_driver_id(); |
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14 | } else { |
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15 | if ( (driver = ao_driver_id(device)) == -1 ) { |
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16 | ROAR_ERR("Can not open audio device via libao's driver '%s'", device); |
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17 | return -1; |
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18 | } |
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19 | } |
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20 | |
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21 | format.bits = info->bits; |
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22 | format.channels = info->channels; |
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23 | format.rate = info->rate; |
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24 | format.byte_format = AO_FMT_NATIVE; |
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25 | |
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26 | aodevice = ao_open_live(driver, &format, NULL /* no options */); |
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27 | |
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28 | if ( aodevice == NULL ) { |
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29 | ROAR_ERR("Can not open audio device via libao."); |
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30 | return -1; |
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31 | } |
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32 | |
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33 | *((ao_device**)inst) = aodevice; |
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34 | |
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35 | return 0; |
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36 | } |
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37 | |
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38 | int driver_ao_close(DRIVER_USERDATA_T inst) { |
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39 | |
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40 | ao_close((ao_device*)inst); |
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41 | |
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42 | ao_shutdown(); |
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43 | |
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44 | return -1; |
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45 | } |
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46 | |
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47 | int driver_ao_pause(DRIVER_USERDATA_T inst, int newstate) { |
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48 | return -1; |
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49 | } |
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50 | |
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51 | int driver_ao_write(DRIVER_USERDATA_T inst, char * buf, int len) { |
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52 | return ao_play((ao_device*)inst, buf, len); |
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53 | } |
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54 | |
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55 | int driver_ao_read(DRIVER_USERDATA_T inst, char * buf, int len) { |
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56 | return -1; |
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57 | } |
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58 | |
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59 | int driver_ao_flush(DRIVER_USERDATA_T inst) { |
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60 | return 0; |
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61 | } |
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62 | |
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63 | //ll |
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