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Merge pull request #1321 from gameblabla/libaosound 

Add support for libao
This commit is contained in:
Stefanos Kornilios Mitsis Poiitidis 2018-08-25 21:24:29 +03:00 committed by GitHub
parent 05b700b227 a40d8bc74b
commit 11f76f5fbe
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GPG Key ID: 4AEE18F83AFDEB23
5 changed files with 69 additions and 0 deletions
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49
core/oslib/audiobackend_libao.cpp Normal file
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@ -0,0 +1,49 @@
#include "oslib/audiobackend_libao.h"
#ifdef USE_LIBAO
#include <ao/ao.h>
static ao_device *aodevice;
static ao_sample_format aoformat;
static void libao_init()
{
ao_initialize();
memset(&aoformat, 0, sizeof(aoformat));
aoformat.bits = 16;
aoformat.channels = 2;
aoformat.rate = 44100;
aoformat.byte_format = AO_FMT_LITTLE;
aodevice = ao_open_live(ao_default_driver_id(), &aoformat, NULL); // Live output
if (!aodevice)
aodevice = ao_open_live(ao_driver_id("null"), &aoformat, NULL);
}
static u32 libao_push(void* frame, u32 samples, bool wait)
{
if (aodevice)
ao_play(aodevice, (char*)frame, samples * 4);
return 1;
}
static void libao_term()
{
if (aodevice)
{
ao_close(aodevice);
ao_shutdown();
}
}
audiobackend_t audiobackend_libao = {
"libao", // Slug
"libao", // Name
&libao_init,
&libao_push,
&libao_term
};
#endif

4
core/oslib/audiobackend_libao.h Normal file
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@ -0,0 +1,4 @@
#pragma once
#include "oslib/audiostream.h"
extern audiobackend_t audiobackend_libao;

4
core/oslib/audiostream.cpp
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@ -9,6 +9,7 @@
#include "oslib/audiobackend_pulseaudio.h"
#include "oslib/audiobackend_coreaudio.h"
#include "oslib/audiobackend_omx.h"
#include "oslib/audiobackend_libao.h"
struct SoundFrame { s16 l;s16 r; };
#define SAMPLE_COUNT 512
@ -90,6 +91,9 @@ void RegisterAllAudioBackends() {
#if USE_PULSEAUDIO
RegisterAudioBackend(&audiobackend_pulseaudio);
#endif
#if USE_LIBAO
RegisterAudioBackend(&audiobackend_libao);
#endif
#if HOST_OS == OS_DARWIN
RegisterAudioBackend(&audiobackend_coreaudio);
#endif

6
shell/cmake/CMakeLists.txt
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@ -18,6 +18,7 @@ endfunction()
option(USE_SDL "Use SDL" OFF)
option(USE_OSS "Use OSS" ON)
option(USE_ALSA "Use ALSA" ON)
option(USE_LIBAO "Use LibAO" OFF)
option(USE_GLES "Use GL ES" OFF)
option(USE_PULSEAUDIO "Use PulseAudio" OFF)
option(USE_WEBUI "Use WebUI" ON)
@ -151,6 +152,11 @@ if(USE_PULSEAUDIO)
list(APPEND libs pulse-simple)
endif()
if(USE_LIBAO)
add_definitions(-DUSE_LIBAO)
list(APPEND libs ao)
endif()
# Graphic stuffs:
if(USE_REND)

6
shell/linux/Makefile
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@ -5,6 +5,7 @@ FOR_LINUX :=1
WEBUI :=1
USE_OSS := 1
#USE_PULSEAUDIO := 1
#USE_LIBAO := 1
USE_EVDEV := 1
CXX=${CC_PREFIX}g++
@ -318,6 +319,11 @@ ifdef USE_PULSEAUDIO
LIBS += `pkg-config --libs libpulse-simple`
endif
ifdef USE_LIBAO
CXXFLAGS += `pkg-config --cflags ao` -D USE_LIBAO
LIBS += `pkg-config --libs ao`
endif
ifdef HAS_SOFTREND
CFLAGS += -fopenmp -msse4.1
LDFLAGS += -fopenmp