tor-browser

The Tor Browser
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cubeb-output-latency.h (1641B)

      1 #ifndef _CUBEB_OUTPUT_LATENCY_H_
      2 #define _CUBEB_OUTPUT_LATENCY_H_
      3 
      4 #include "../cubeb-jni.h"
      5 #include "cubeb_media_library.h"
      6 #include <stdbool.h>
      7 
      8 struct output_latency_function {
      9  media_lib * from_lib;
     10  cubeb_jni * from_jni;
     11  int version;
     12 };
     13 
     14 typedef struct output_latency_function output_latency_function;
     15 
     16 const int ANDROID_JELLY_BEAN_MR1_4_2 = 17;
     17 
     18 output_latency_function *
     19 cubeb_output_latency_load_method(int version)
     20 {
     21  output_latency_function * ol = NULL;
     22  ol = (output_latency_function *)calloc(1, sizeof(output_latency_function));
     23 
     24  ol->version = version;
     25 
     26  if (ol->version > ANDROID_JELLY_BEAN_MR1_4_2) {
     27    ol->from_jni = cubeb_jni_init();
     28    return ol;
     29  }
     30 
     31  ol->from_lib = cubeb_load_media_library();
     32  return ol;
     33 }
     34 
     35 bool
     36 cubeb_output_latency_method_is_loaded(output_latency_function * ol)
     37 {
     38  assert(ol);
     39  if (ol->version > ANDROID_JELLY_BEAN_MR1_4_2) {
     40    return !!ol->from_jni;
     41  }
     42 
     43  return !!ol->from_lib;
     44 }
     45 
     46 void
     47 cubeb_output_latency_unload_method(output_latency_function * ol)
     48 {
     49  if (!ol) {
     50    return;
     51  }
     52 
     53  if (ol->version > ANDROID_JELLY_BEAN_MR1_4_2 && ol->from_jni) {
     54    cubeb_jni_destroy(ol->from_jni);
     55  }
     56 
     57  if (ol->version <= ANDROID_JELLY_BEAN_MR1_4_2 && ol->from_lib) {
     58    cubeb_close_media_library(ol->from_lib);
     59  }
     60 
     61  free(ol);
     62 }
     63 
     64 extern "C" {
     65 
     66 uint32_t
     67 cubeb_get_output_latency(output_latency_function * ol)
     68 {
     69  assert(cubeb_output_latency_method_is_loaded(ol));
     70 
     71  if (ol->version > ANDROID_JELLY_BEAN_MR1_4_2) {
     72    return cubeb_get_output_latency_from_jni(ol->from_jni);
     73  }
     74 
     75  return cubeb_get_output_latency_from_media_library(ol->from_lib);
     76 }
     77 }
     78 
     79 #endif // _CUBEB_OUTPUT_LATENCY_H_