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1 | //output.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 | void * g_output_buffer; |
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7 | unsigned int g_output_buffer_len; |
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8 | */ |
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9 | |
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10 | int output_buffer_init (struct roar_audio_info * info) { |
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11 | size_t size; // = ROAR_OUTPUT_BUFFER_SAMPLES; |
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12 | void * buf; |
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13 | |
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14 | /* |
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15 | size *= info->channels; |
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16 | size *= info->bits / 8; |
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17 | */ |
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18 | |
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19 | size = ROAR_OUTPUT_CALC_OUTBUFSIZE(info); |
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20 | |
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21 | ROAR_DBG("output_buffer_init(*): output buffer size is %i", size); |
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22 | |
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23 | if ( (buf = malloc(size)) == NULL ) |
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24 | return -1; |
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25 | |
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26 | g_output_buffer = buf; |
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27 | g_output_buffer_len = size; |
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28 | |
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29 | ROAR_DBG("output_buffer_init(*): output buffer is at %p", buf); |
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30 | |
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31 | #ifdef ROAR_HAVE_MLOCK |
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32 | ROAR_MLOCK(buf, size); |
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33 | #endif |
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34 | |
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35 | output_buffer_reinit(); |
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36 | |
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37 | return 0; |
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38 | } |
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39 | |
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40 | int output_buffer_reinit (void) { |
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41 | |
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42 | if ( g_output_buffer != NULL ) |
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43 | memset(g_output_buffer, 0, g_output_buffer_len); |
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44 | |
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45 | return 0; |
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46 | } |
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47 | |
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48 | int output_buffer_free (void) { |
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49 | ROAR_DBG("output_buffer_init(*): freeing output buffer at %p", g_output_buffer); |
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50 | |
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51 | if ( g_output_buffer ) |
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52 | free(g_output_buffer); |
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53 | |
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54 | g_output_buffer = NULL; |
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55 | g_output_buffer_len = 0; |
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56 | |
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57 | return 0; |
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58 | } |
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59 | |
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60 | int output_buffer_flush (DRIVER_USERDATA_T inst, int driver) { |
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61 | ROAR_DBG("output_buffer_init(*): flushing output buffer"); |
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62 | |
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63 | return driver_write(inst, driver, g_output_buffer, g_output_buffer_len); |
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64 | } |
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65 | |
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66 | //ll |
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