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[0] | 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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[57] | 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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[0] | 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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