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| − | MythTV is working on the new Intel based Apple Macintosh platforms. This page is intended to share information among the people attempting to build and optimize the Intel Mac code.
| + | #REDIRECT [[Myth on Mac OS X]] |
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| − | In the 'contrib' directory of the MythTV source code, there is a perl script which automates the build process for MythTV on MacOS systems. The script is called osx-packager.pl. The descriptions of changes needed assume that script as a starting point.
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| − | | |
| − | ==Changes Needed==
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| − | Here's a brief summary of chages needed to build MythTV on an Intel based Mac system:
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| − | | |
| − | * Update QT version being used. 3.3.4 doesn't compile with gcc 4.0; 3.3.5 compiles but generates a bus error when displaying Myth menus. Using a development snapshot of 3.3.6 seems to work. Replace the QT url in osx-packager with the following: ftp://ftp.trolltech.com/qt/snapshots/qt-mac-free-3.3.6-snapshot-20060311.tar.gz (these snapshots are changed frequently, pick a current one from that directory)
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| − | A.Weder (18.03.2006): I had to remove "-no-mac-style" from the qt-mt conf options in osx-packager.pl, since I got compile errors about QMacStyle not being defined in widgets/qtabbar.cpp. This is for the qt 20060317 snapshot of qt-mac 3.3.6, but also seems to hold for earlier snapshots.
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| − | * Override Host for sourceforge? I found the availability of packages to be spotty on the default host, if it fails, replace the hostname with a working host.
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| − | * libdvdnav: Endian byte swapping missing from src/dvdread/bswap.h The following can be added to use Apple-supplied routines:
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| − | | |
| − | #elif defined(__APPLE__)
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| − | #include <libkern/OSByteOrder.h>
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| − | #define B2N_16(x) x = OSSwapBigToHostConstInt16(x)
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| − | #define B2N_32(x) x = OSSwapBigToHostConstInt32(x)
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| − | #define B2N_64(x) x = OSSwapBigToHostConstInt64(x)
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| − | | |
| − | * libexif: compile failed. replace 'static ExifSShort' by just 'ExifSShort' in libexif/exif-utils.c near line 83.
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| − | | |
| − | * libdvdread: Endian byte swapping missing from dvdread/bswap.h See bswap.h changes above.
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| − | MythTV changes:
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| − | * Update osx-packager.pl to add configure parameters used in building MythTV. In the section "configure mythplugins, and mythtv, etc", the 'mythtv' portion should look something like this:
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| − | | |
| − | 'mythtv'
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| − | => [
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| − | '--disable-distcc',
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| − | '--disable-mmx',
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| − | '--arch=i686',
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| − | '--extra-cxxflags=-msse -msse2 -msse3',
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| − | '--prefix=' . $PREFIX,
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| − | ],
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| − | * Fix libs/libavcodec/liba52/resample.c -- Apply changes in patch below.
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| − | * 3rd bswap.h patch, in file 'libs/libmythdvdnav/bswap.h'. See bswap changes described above.
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| − | * This diff, against the released 0.19 codebase, fixes the crash and allows video and audio to work. It does also fix resample.c.
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| − | <pre>
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| − | diff -ur mythtv-0.19/libs/libavcodec/liba52/resample.c /Users/ogre/src/mythtv-0.19/libs/libavcodec/liba52/resample.c
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| − | --- mythtv-0.19/libs/libavcodec/liba52/resample.c 2006-01-05 15:19:29.000000000 -0800
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| − | +++ /Users/ogre/src/mythtv-0.19/libs/libavcodec/liba52/resample.c 2006-03-16 13:31:42.000000000 -0800
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| − | @@ -13,14 +13,14 @@
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| − |
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| − | #include "resample_c.c"
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| − |
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| − | -#ifdef ARCH_X86
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| − | +#ifdef HAVE_MMX
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| − | #include "resample_mmx.c"
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| − | #endif
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| − |
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| − | void* a52_resample_init(uint32_t mm_accel,int flags,int chans){
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| − | void* tmp;
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| − |
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| − | -#ifdef ARCH_X86
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| − | +#ifdef HAVE_MMX
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| − | if(mm_accel&MM_ACCEL_X86_MMX){
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| − | tmp=a52_resample_MMX(flags,chans);
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| − | if(tmp){
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| − | diff -ur mythtv-0.19/libs/libavcodec/msmpeg4.c /Users/ogre/src/mythtv-0.19/libs/libavcodec/msmpeg4.c
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| − | --- mythtv-0.19/libs/libavcodec/msmpeg4.c 2006-01-15 23:14:43.000000000 -0800
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| − | +++ /Users/ogre/src/mythtv-0.19/libs/libavcodec/msmpeg4.c 2006-03-16 13:25:10.000000000 -0800
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| − | @@ -725,7 +725,7 @@
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| − | necessitate to modify mpegvideo.c. The problem comes from the
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| − | fact they decided to store the quantized DC (which would lead
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| − | to problems if Q could vary !) */
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| − | -#if (defined(ARCH_X86) || defined(ARCH_X86_64)) && !defined PIC
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| − | +#if defined(HAVE_MMX) && (defined(ARCH_X86) || defined(ARCH_X86_64)) && !defined PIC
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| − | asm volatile(
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| − | "movl %3, %%eax \n\t"
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| − | "shrl $1, %%eax \n\t"
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| − | diff -ur mythtv-0.19/libs/libmythtv/videoout_quartz.cpp /Users/ogre/src/mythtv-0.19/libs/libmythtv/videoout_quartz.cpp
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| − | --- mythtv-0.19/libs/libmythtv/videoout_quartz.cpp 2005-11-26 08:38:42.000000000 -0800
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| − | +++ /Users/ogre/src/mythtv-0.19/libs/libmythtv/videoout_quartz.cpp 2006-03-16 13:59:53.000000000 -0800
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| − | @@ -1315,10 +1315,12 @@
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| − | data->windowedMode = gContext->GetNumSetting("RunFrontendInWindow", 0);
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| − | data->correctGamma = gContext->GetNumSetting("MacGammaCorrect", 0);
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| − |
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| − | +#ifdef HAVE_ALTIVEC
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| − | if (gContext->GetNumSetting("MacYuvConversion", 1))
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| − | data->yuvConverter = yuv2vuy_init_altivec();
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| − | else
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| − | - data->yuvConverter = NULL;
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| − | +#endif
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| − | + data->yuvConverter = yuv2vuy_init_plain();
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| − |
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| − | if (!CreateQuartzBuffers())
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| − | {
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| − | diff -ur mythtv-0.19/libs/libmythtv/yuv2rgb.cpp /Users/ogre/src/mythtv-0.19/libs/libmythtv/yuv2rgb.cpp
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| − | --- mythtv-0.19/libs/libmythtv/yuv2rgb.cpp 2006-01-19 21:04:02.000000000 -0800
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| − | +++ /Users/ogre/src/mythtv-0.19/libs/libmythtv/yuv2rgb.cpp 2006-03-16 14:06:33.000000000 -0800
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| − | @@ -682,7 +682,6 @@
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| − | }
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| − | }
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| − |
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| − | -#ifdef HAVE_ALTIVEC
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| − | static void non_vec_yuv420_2vuy (uint8_t * image, uint8_t * py,
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| − | uint8_t * pu, uint8_t * pv,
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| − | int h_size, int v_size,
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| − | @@ -717,6 +716,13 @@
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| − | }
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| − | }
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| − |
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| − | +yuv2vuy_fun yuv2vuy_init_plain(void)
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| − | +{
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| − | + return non_vec_yuv420_2vuy;
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| − | +}
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| − | +
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| − | +#ifdef HAVE_ALTIVEC
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| − | +
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| − | // Altivec code adapted from VLC's i420_yuv2.c (thanks to Titer and Paul Jara)
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| − |
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| − | #define VEC_NEXT_LINES() \
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| − | diff -ur mythtv-0.19/libs/libmythtv/yuv2rgb.h /Users/ogre/src/mythtv-0.19/libs/libmythtv/yuv2rgb.h
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| − | --- mythtv-0.19/libs/libmythtv/yuv2rgb.h 2005-04-21 07:14:28.000000000 -0700
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| − | +++ /Users/ogre/src/mythtv-0.19/libs/libmythtv/yuv2rgb.h 2006-03-16 14:01:06.000000000 -0800
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| − | @@ -50,6 +50,7 @@
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| − | int vuy_stride, int y_stride, int uv_stride);
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| − |
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| − | yuv2vuy_fun yuv2vuy_init_altivec (void);
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| − | +yuv2vuy_fun yuv2vuy_init_plain(void);
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| − |
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| − | typedef void (* vuy2yuv_fun) (uint8_t * image, uint8_t * py,
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| − | uint8_t * pu, uint8_t * pv,
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| − | </pre>
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| − | * Optional, to re-enable MMX: Apply the patch found at [http://mplayerhq.hu/pipermail/ffmpeg-devel/2006-February/007608.html this link]. Modify osx-packager.pl to remove 'disable-mmx', and add --enable-memalign-hack. I also had to add "-read_only_relocs,warning" to the QMAKE_LFLAGS line in the MythTV build config to get around a linker error.
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| − | == Current Status ==
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| − | Application successfully compiles. MythTV menu system displays, communicates with backend, and displays video. HD MPEG2 video can be played on a Core Duo 1.66GHz Mac Mini.
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| − | ==Useful Links==
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| − | [http://developer.apple.com/documentation/GraphicsImaging/Conceptual/CoreVideo/CVProg_Intro/chapter_1_section_1.html Core Video Programming Guide] All Intel Macs support Core Image / Core Video, which can be used for optimized video playback and offloading effects such as de-interlacing to the GPU.
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| − |
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| − | ==Other Notes==
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| − | '/proc/cpuinfo/' is used to determine CPU type in linux builds. In MacOS, "/usr/sbin/system_profiler SPHardwareDataType" could be used to determine the architecture and CPU type.
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| − | [[Category:Developer Documentation]] [[Category:MacOS]]
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