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Force OpenAL backend on some platforms 

OpenAL audio backend is being forced on HTML5 and OSX
pull/424/head
Ray San 7 years ago
parent
1320044e94
commit
61afd07bd7
3 changed files with 53 additions and 22 deletions
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  1. +24
    -3
      src/Makefile
  2. +17
    -12
      src/audio.c
  3. +12
    -7
      src/audio.h

+ 24
- 3
src/Makefile View File

@ -47,12 +47,20 @@ API_VERSION = 1
PLATFORM ?= PLATFORM_DESKTOP
RAYLIB_PATH = ..
# Library type used for raylib: STATIC (.a) or SHARED (.so/.dll)
RAYLIB_LIBTYPE ?= STATIC
# Included raylib audio module on compilation
# NOTE: Some programs like tools could not require audio support
INCLUDE_AUDIO_MODULE ?= YES
# Library type used for raylib: STATIC (.a) or SHARED (.so/.dll)
RAYLIB_LIBTYPE ?= STATIC
# Force OpenAL Soft backend for audio
FORCE_OPENAL_BACKEND ?= FALSE
# OpenAL Soft audio backend forced on HTML5 and OSX (see below)
ifeq ($(PLATFORM),PLATFORM_WEB)
FORCE_OPENAL_BACKEND = TRUE
endif
# Use cross-compiler for PLATFORM_RPI
ifeq ($(PLATFORM),PLATFORM_RPI)
@ -95,6 +103,13 @@ ifeq ($(PLATFORM),PLATFORM_RPI)
endif
endif
# Force OpenAL Soft audio backend for OSX platform
# NOTE 1: mini_al library does not support CoreAudio yet
# NOTE 2: Required OpenAL libraries should be available on OSX
ifeq ($(PLATFORM_OS),OSX)
FORCE_OPENAL_BACKEND = TRUE
endif
ifeq ($(PLATFORM),PLATFORM_WEB)
# Emscripten required variables
EMSDK_PATH = C:/emsdk
@ -269,6 +284,10 @@ ifeq ($(RAYLIB_LIBTYPE),SHARED)
CFLAGS += -fPIC -DBUILD_LIBTYPE_SHARED
endif
ifeq ($(FORCE_OPENAL_BACKEND),TRUE)
CFLAGS += -DFORCE_OPENAL_BACKEND
endif
# Define include paths for required headers
# NOTE: Several external required libraries (stb and others)
INCLUDE_PATHS = -I. -Iexternal -Iexternal/glfw/include
@ -329,8 +348,10 @@ endif
ifeq ($(INCLUDE_AUDIO_MODULE),YES)
OBJS += audio.o
OBJS += mini_al.o
OBJS += stb_vorbis.o
ifeq ($(FORCE_OPENAL_BACKEND),FALSE)
OBJS += mini_al.o
endif
endif
# Default target entry

+ 17
- 12
src/audio.c View File

@ -16,6 +16,9 @@
* Define to use the module as standalone library (independently of raylib).
* Required types and functions are defined in the same module.
*
* #define FORCE_OPENAL_BACKEND
* Force OpenAL Soft audio backend usage
*
* #define SUPPORT_FILEFORMAT_WAV
* #define SUPPORT_FILEFORMAT_OGG
* #define SUPPORT_FILEFORMAT_XM
@ -24,19 +27,24 @@
* Selected desired fileformats to be supported for loading. Some of those formats are
* supported by default, to remove support, just comment unrequired #define in this module
*
* l">LIMITATIONS:
* LIMITATIONS ">(only OpenAL Soft):
* Only up to two channels supported: MONO and STEREO (for additional channels, use AL_EXT_MCFORMATS)
* Only the following sample sizes supported: 8bit PCM, 16bit PCM, 32-bit float PCM (using AL_EXT_FLOAT32)
*
* DEPENDENCIES:
* OpenAL Soft - Audio device management (http://kcat.strangesoft.net/openal.html)
* mini_al - Audio device/context management (https://github.com/dr-soft/mini_al)
* stb_vorbis - OGG audio files loading (http://www.nothings.org/stb_vorbis/)
* jar_xm - XM module file loading
* jar_mod - MOD audio file loading
* dr_flac - FLAC audio file loading
*
* *OpenAL Soft - Audio device management, still used on HTML5 and OSX platforms
*
* CONTRIBUTORS:
* Joshua Reisenauer (github: @kd7tck):
* David Reid (github: @mackron) (Nov. 2017):
* - Complete port to mini_al library
*
* Joshua Reisenauer (github: @kd7tck) (2015)
* - XM audio module support (jar_xm)
* - MOD audio module support (jar_mod)
* - Mixing channels support
@ -45,7 +53,7 @@
*
* LICENSE: zlib/libpng
*
* Copyright (c) 2014-2017 Ramon Santamaria (@raysan5)
* Copyright (c) 2014-2018 Ramon Santamaria (@raysan5)
*
* This software is provided "as-is", without any express or implied warranty. In no event
* will the authors be held liable for any damages arising from the use of this software.
@ -72,8 +80,8 @@
#define SUPPORT_FILEFORMAT_MOD
//-------------------------------------------------
#ifndef USE_MINI_AL
#define USE_MINI_AL 1 // Set to 1 to use mini_al; 0 to use OpenAL.
#if !defined(FORCE_OPENAL_BACKEND)
#define USE_MINI_AL 1 // Set to 1 to use mini_al; 0 to use OpenAL.
#endif
#if defined(AUDIO_STANDALONE)
@ -86,7 +94,7 @@
#include "external/mini_al.h" // Implemented in mini_al.c. Cannot implement this here because it conflicts with Win32 APIs such as CloseWindow(), etc.
#if !defined(USE_MINI_AL) || USE_MINI_AL == 0
#if !defined(USE_MINI_AL) || (USE_MINI_AL == 0)
#if defined(__APPLE__)
#include "OpenAL/al.h" // OpenAL basic header
#include "OpenAL/alc.h" // OpenAL context header (like OpenGL, OpenAL requires a context to work)
@ -480,11 +488,8 @@ void InitAudioDevice(void)
alListenerf(AL_GAIN, 1.0f);
if (alIsExtensionPresent("AL_EXT_float32")) {
TraceLog(LOG_INFO, "AL_EXT_float32 supported");
} else {
TraceLog(LOG_INFO, "AL_EXT_float32 not supported");
}
if (alIsExtensionPresent("AL_EXT_float32")) TraceLog(LOG_INFO, "[EXTENSION] AL_EXT_float32 supported");
else TraceLog(LOG_INFO, "[EXTENSION] AL_EXT_float32 not supported");
}
}
#endif

+ 12
- 7
src/audio.h View File

@ -10,19 +10,24 @@
* - Manage mixing channels
* - Manage raw audio context
*
* l">LIMITATIONS:
* LIMITATIONS ">(only OpenAL Soft):
* Only up to two channels supported: MONO and STEREO (for additional channels, use AL_EXT_MCFORMATS)
* Only the following sample sizes supported: 8bit PCM, 16bit PCM, 32-bit float PCM (using AL_EXT_FLOAT32)
*
* DEPENDENCIES:
* OpenAL Soft - Audio device management (http://kcat.strangesoft.net/openal.html)
* mini_al - Audio device/context management (https://github.com/dr-soft/mini_al)
* stb_vorbis - OGG audio files loading (http://www.nothings.org/stb_vorbis/)
* jar_xm - XM module file loading (#define SUPPORT_FILEFORMAT_XM)
* jar_mod - MOD audio file loading (#define SUPPORT_FILEFORMAT_MOD)
* dr_flac - FLAC audio file loading (#define SUPPORT_FILEFORMAT_FLAC)
* jar_xm - XM module file loading
* jar_mod - MOD audio file loading
* dr_flac - FLAC audio file loading
*
* *OpenAL Soft - Audio device management, still used on HTML5 and OSX platforms
*
* CONTRIBUTORS:
* Joshua Reisenauer (github: @kd7tck):
* David Reid (github: @mackron) (Nov. 2017):
* - Complete port to mini_al library
*
* Joshua Reisenauer (github: @kd7tck) (2015)
* - XM audio module support (jar_xm)
* - MOD audio module support (jar_mod)
* - Mixing channels support
@ -31,7 +36,7 @@
*
* LICENSE: zlib/libpng
*
* Copyright (c) 2014-2017 Ramon Santamaria (@raysan5)
* Copyright (c) 2014-2018 Ramon Santamaria (@raysan5)
*
* This software is provided "as-is", without any express or implied warranty. In no event
* will the authors be held liable for any damages arising from the use of this software.

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