From d162ecbaffe845c9707da5d2f6cab11f343ef00e Mon Sep 17 00:00:00 2001 From: Gaming4JC Date: Sun, 27 Oct 2019 19:40:52 -0400 Subject: Issue #1267 - Part 1: Update libcubeb to a1200c34. --- media/libcubeb/src/android/cubeb_media_library.h | 62 ++++++++++++++++++++++++ 1 file changed, 62 insertions(+) create mode 100644 media/libcubeb/src/android/cubeb_media_library.h (limited to 'media/libcubeb/src/android/cubeb_media_library.h') diff --git a/media/libcubeb/src/android/cubeb_media_library.h b/media/libcubeb/src/android/cubeb_media_library.h new file mode 100644 index 000000000..ab21b779d --- /dev/null +++ b/media/libcubeb/src/android/cubeb_media_library.h @@ -0,0 +1,62 @@ +#ifndef _CUBEB_MEDIA_LIBRARY_H_ +#define _CUBEB_MEDIA_LIBRARY_H_ + +struct media_lib { + void * libmedia; + int32_t (* get_output_latency)(uint32_t * latency, int stream_type); +}; + +typedef struct media_lib media_lib; + +media_lib * +cubeb_load_media_library() +{ + media_lib ml = {0}; + ml.libmedia = dlopen("libmedia.so", RTLD_LAZY); + if (!ml.libmedia) { + return NULL; + } + + // Get the latency, in ms, from AudioFlinger. First, try the most recent signature. + // status_t AudioSystem::getOutputLatency(uint32_t* latency, audio_stream_type_t streamType) + ml.get_output_latency = + dlsym(ml.libmedia, "_ZN7android11AudioSystem16getOutputLatencyEPj19audio_stream_type_t"); + if (!ml.get_output_latency) { + // In case of failure, try the signature from legacy version. + // status_t AudioSystem::getOutputLatency(uint32_t* latency, int streamType) + ml.get_output_latency = + dlsym(ml.libmedia, "_ZN7android11AudioSystem16getOutputLatencyEPji"); + if (!ml.get_output_latency) { + return NULL; + } + } + + media_lib * rv = NULL; + rv = calloc(1, sizeof(media_lib)); + assert(rv); + *rv = ml; + return rv; +} + +void +cubeb_close_media_library(media_lib * ml) +{ + dlclose(ml->libmedia); + ml->libmedia = NULL; + ml->get_output_latency = NULL; + free(ml); +} + +uint32_t +cubeb_get_output_latency_from_media_library(media_lib * ml) +{ + uint32_t latency = 0; + const int audio_stream_type_music = 3; + int32_t r = ml->get_output_latency(&latency, audio_stream_type_music); + if (r) { + return 0; + } + return latency; +} + +#endif // _CUBEB_MEDIA_LIBRARY_H_ -- cgit v1.2.3