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detect endianness with cmake

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This commit is contained in:
Andrew Kelley 2015-07-10 03:31:51 -07:00
parent 6c2226a6d7
commit f0c8c68592
4 changed files with 28 additions and 24 deletions
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9
CMakeLists.txt
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@ -104,6 +104,15 @@ set(TEST_CFLAGS "${LIB_CFLAGS} -fprofile-arcs -ftest-coverage")
set(TEST_LDFLAGS "-fprofile-arcs -ftest-coverage") set(TEST_LDFLAGS "-fprofile-arcs -ftest-coverage")
set(TEST_INCLUDES "${CMAKE_SOURCE_DIR}/test") set(TEST_INCLUDES "${CMAKE_SOURCE_DIR}/test")
include(TestBigEndian)
test_big_endian(IS_BIG_ENDIAN)
if(IS_BIG_ENDIAN)
set(SOUNDIO_OS_BIG_ENDIAN true)
set(SOUNDIO_OS_LITTLE_ENDIAN false)
else()
set(SOUNDIO_OS_BIG_ENDIAN false)
set(SOUNDIO_OS_LITTLE_ENDIAN true)
endif()
configure_file ( configure_file (
"${CMAKE_SOURCE_DIR}/src/config.h.in" "${CMAKE_SOURCE_DIR}/src/config.h.in"
${CONFIGURE_OUT_FILE} ${CONFIGURE_OUT_FILE}

7
src/alsa.cpp
View file

@ -190,6 +190,13 @@ static void test_fmt_mask(SoundIoDevice *device, const snd_pcm_format_mask_t *fm
} }
} }
// TODO: look at http://www.alsa-project.org/alsa-doc/alsa-lib/_2test_2pcm_8c-example.html#a27
// deterimine what do do about:
// * hw buffer size
// * hw period time
// * sw start threshold
// * sw avail min
static int probe_device(SoundIoDevice *device, snd_pcm_chmap_query_t **maps) { static int probe_device(SoundIoDevice *device, snd_pcm_chmap_query_t **maps) {
int err; int err;
snd_pcm_t *handle; snd_pcm_t *handle;

10
src/config.h.in
View file

@ -1,3 +1,10 @@
/*
* Copyright (c) 2015 Andrew Kelley
*
* This file is part of libsoundio, which is MIT licensed.
* See http://opensource.org/licenses/MIT
*/
#ifndef SOUNDIO_CONFIG_H #ifndef SOUNDIO_CONFIG_H
#define SOUNDIO_CONFIG_H #define SOUNDIO_CONFIG_H
@ -6,6 +13,9 @@
#define SOUNDIO_VERSION_PATCH @LIBSOUNDIO_VERSION_PATCH@ #define SOUNDIO_VERSION_PATCH @LIBSOUNDIO_VERSION_PATCH@
#define SOUNDIO_VERSION_STRING "@LIBSOUNDIO_VERSION@" #define SOUNDIO_VERSION_STRING "@LIBSOUNDIO_VERSION@"
#cmakedefine SOUNDIO_OS_BIG_ENDIAN @SOUNDIO_OS_BIG_ENDIAN@
#cmakedefine SOUNDIO_OS_LITTLE_ENDIAN @SOUNDIO_OS_LITTLE_ENDIAN@
#cmakedefine SOUNDIO_HAVE_ALSA #cmakedefine SOUNDIO_HAVE_ALSA
#cmakedefine SOUNDIO_HAVE_PULSEAUDIO #cmakedefine SOUNDIO_HAVE_PULSEAUDIO

26
src/soundio.h
View file

@ -11,30 +11,6 @@
#include "config.h" #include "config.h"
#include <stdbool.h> #include <stdbool.h>
#if (defined(__BYTE_ORDER__) && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) || \
defined(__BIG_ENDIAN__) || \
defined(__ARMEB__) || \
defined(__THUMBEB__) || \
defined(__AARCH64EB__) || \
defined(_MIBSEB) || defined(__MIBSEB) || defined(__MIBSEB__)
#define SOUNDIO_OS_BIG_ENDIAN
#elif (defined(__BYTE_ORDER__) && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) || \
defined(__LITTLE_ENDIAN__) || \
defined(__ARMEL__) || \
defined(__THUMBEL__) || \
defined(__AARCH64EL__) || \
defined(_MIPSEL) || defined(__MIPSEL) || defined(__MIPSEL__) || \
defined(_WIN32)
#define SOUNDIO_OS_LITTLE_ENDIAN
#else
#error unknown byte order
#endif
#ifdef __cplusplus #ifdef __cplusplus
extern "C" extern "C"
{ {
@ -180,6 +156,8 @@ enum SoundIoFormat {
#define SoundIoFormatU32NE SoundIoFormatU32LE #define SoundIoFormatU32NE SoundIoFormatU32LE
#define SoundIoFormatFloat32NE SoundIoFormatFloat32LE #define SoundIoFormatFloat32NE SoundIoFormatFloat32LE
#define SoundIoFormatFloat64NE SoundIoFormatFloat64LE #define SoundIoFormatFloat64NE SoundIoFormatFloat64LE
#else
#error unknown byte order
#endif #endif
struct SoundIoDevice { struct SoundIoDevice {