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build: change how some OS specific source files are selected

Browse Source 
In a bunch of cases, we emulate highly platform specific APIs on a
higher level across all OSes, such as IPC, terminal, subprocess
handling, and more. We have source files for each OS, and they implement
all the same mpv internal API.

Selecting which source file to use on an OS can be tricky, because there
is partially overlapping and emulated APIs (consider Cygwin on Windows).
Add a pick_first_matching_dep() function to make this slightly easier
and more structured.

Also add dummy backends in some cases, to deal with APIs not being
available.

Clarify the Windows dependency identifiers, as these are the most
confusing.
This commit is contained in:
wm4 2017-06-27 13:47:46 +02:00
parent 70a70b9da3
commit 7eca787571
11 changed files with 129 additions and 47 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
input/input.c
View File

@ -1392,7 +1392,7 @@ void mp_input_load_config(struct input_ctx *ictx)
talloc_free(tmp);
}
#if defined(__MINGW32__)
#if HAVE_WIN32_PIPES
if (ictx->global->opts->input_file && *ictx->global->opts->input_file)
mp_input_pipe_add(ictx, ictx->global->opts->input_file);
#endif

2
input/input.h
View File

@ -259,6 +259,8 @@ void mp_input_pipe_add(struct input_ctx *ictx, const char *filename);
struct mp_ipc_ctx;
struct mp_client_api;
// Platform specific implementation, provided by ipc-*.c.
struct mp_ipc_ctx *mp_init_ipc(struct mp_client_api *client_api,
struct mpv_global *global);
void mp_uninit_ipc(struct mp_ipc_ctx *ctx);

13
input/ipc-dummy.c Normal file
View File

@ -0,0 +1,13 @@
#include <stddef.h>
#include "input/input.h"
struct mp_ipc_ctx *mp_init_ipc(struct mp_client_api *client_api,
struct mpv_global *global)
{
return NULL;
}
void mp_uninit_ipc(struct mp_ipc_ctx *ctx)
{
}

4
options/options.c
View File

@ -168,7 +168,7 @@ static const m_option_t mp_vo_opt_list[] = {
OPT_CHOICE("x11-bypass-compositor", x11_bypass_compositor, 0,
({"no", 0}, {"yes", 1}, {"fs-only", 2}, {"never", 3})),
#endif
#if HAVE_WIN32
#if HAVE_WIN32_DESKTOP
OPT_STRING("vo-mmcss-profile", mmcss_profile, 0),
#endif
#if HAVE_DRM
@ -273,7 +273,7 @@ const m_option_t mp_opts[] = {
OPT_STRING("log-file", log_file, CONF_PRE_PARSE | M_OPT_FILE | UPDATE_TERM),
OPT_FLAG("msg-module", msg_module, UPDATE_TERM),
OPT_FLAG("msg-time", msg_time, UPDATE_TERM),
#if defined(_WIN32) && HAVE_GPL
#if HAVE_WIN32_DESKTOP && HAVE_GPL
OPT_CHOICE("priority", w32_priority, UPDATE_PRIORITY,
({"no", 0},
{"realtime", REALTIME_PRIORITY_CLASS},

9
osdep/subprocess-dummy.c Normal file
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@ -0,0 +1,9 @@
#include "subprocess.h"
int mp_subprocess(char **args, struct mp_cancel *cancel, void *ctx,
subprocess_read_cb on_stdout, subprocess_read_cb on_stderr,
char **error)
{
*error = "unsupported";
return -1;
}

10
osdep/subprocess.c
View File

@ -61,13 +61,3 @@ void mp_subprocess_detached(struct mp_log *log, char **args)
if (pthread_create(&thread, NULL, run_subprocess, p))
talloc_free(p);
}
#if !HAVE_SUBPROCESS
int mp_subprocess(char **args, struct mp_cancel *cancel, void *ctx,
subprocess_read_cb on_stdout, subprocess_read_cb on_stderr,
char **error)
{
*error = "unsupported";
return -1;
}
#endif

31
osdep/terminal-dummy.c Normal file
View File

@ -0,0 +1,31 @@
#include "terminal.h"
void terminal_init(void)
{
}
void terminal_setup_getch(struct input_ctx *ictx)
{
}
void terminal_uninit(void)
{
}
bool terminal_in_background(void)
{
return false;
}
void terminal_get_size(int *w, int *h)
{
}
void mp_write_console_ansi(void *wstream, char *buf)
{
}
bool terminal_try_attach(void)
{
return false;
}

2
player/command.c
View File

@ -5757,7 +5757,7 @@ void mp_notify(struct MPContext *mpctx, int event, void *arg)
static void update_priority(struct MPContext *mpctx)
{
#if defined(_WIN32) && HAVE_GPL
#if HAVE_WIN32_DESKTOP && HAVE_GPL
struct MPOpts *opts = mpctx->opts;
if (opts->w32_priority > 0)
SetPriorityClass(GetCurrentProcess(), opts->w32_priority);

12
waftools/dependencies.py
View File

@ -212,6 +212,17 @@ def filtered_sources(ctx, sources):
return [__source_file__(source) for source in sources \
if __unpack_and_check_filter__(source)]
"""
Like filtered_sources(), but pick only the first entry that matches, and
return its filename.
"""
def pick_first_matching_dep(ctx, deps):
files = filtered_sources(ctx, deps)
if len(files) > 0:
return files[0]
else:
raise DependencyError
def env_fetch(tx):
def fn(ctx):
deps = ctx.env.satisfied_deps
@ -223,6 +234,7 @@ def dependencies_use(ctx):
return [inflector.storage_key(dep) for dep in ctx.env.satisfied_deps]
BuildContext.filtered_sources = filtered_sources
BuildContext.pick_first_matching_dep = pick_first_matching_dep
BuildContext.dependencies_use = dependencies_use
BuildContext.dependencies_includes = env_fetch(lambda x: "INCLUDES_{0}".format(x))
BuildContext.dependency_satisfied = dependency_satisfied

33
wscript
View File

@ -12,6 +12,18 @@ from waftools.checks.custom import *
c_preproc.go_absolute=True # enable system folders
c_preproc.standard_includes.append('/usr/local/include')
"""
Dependency identifiers (for win32 vs. Unix):
wscript / C source meaning
--------------------------------------------------------------------------
posix / HAVE_POSIX: defined on Linux, OSX, Cygwin
(Cygwin emulates POSIX APIs on Windows)
mingw / __MINGW32__: defined if posix is not defined
(Windows without Cygwin)
os-win32 / _WIN32: defined if basic windows.h API is available
win32-desktop / HAVE_WIN32_DESKTOP: defined if desktop windows.h API is available
"""
build_options = [
{
'name': '--cplayer',
@ -132,15 +144,15 @@ main_dependencies = [
'fmsg': 'Unable to find either POSIX or MinGW-w64 environment, ' \
'or compiler does not work.',
}, {
'name': 'win32',
'desc': 'win32',
'name': 'win32-desktop',
'desc': 'win32 desktop APIs',
'deps_any': [ 'os-win32', 'os-cygwin' ],
'func': check_cc(lib=['winmm', 'gdi32', 'ole32', 'uuid', 'avrt', 'dwmapi']),
}, {
'name': '--win32-internal-pthreads',
'desc': 'internal pthread wrapper for win32 (Vista+)',
'deps_neg': [ 'posix' ],
'deps': [ 'win32' ],
'deps': [ 'os-win32' ],
'func': check_true,
}, {
'name': 'pthreads',
@ -203,10 +215,11 @@ iconv support use --disable-iconv.",
'posix_spawnp(0,0,0,0,0,0); kill(0,0)'),
'deps_neg': ['mingw'],
}, {
'name': 'subprocess',
'desc': 'posix_spawnp() or MinGW',
'name': 'win32-pipes',
'desc': 'Windows pipe support',
'func': check_true,
'deps_any': ['posix-spawn', 'mingw'],
'deps': [ 'win32-desktop' ],
'deps_neg': [ 'posix' ],
}, {
'name': 'glob-win32',
'desc': 'glob() win32 replacement',
@ -506,7 +519,7 @@ audio_output_features = [
}, {
'name': '--wasapi',
'desc': 'WASAPI audio output',
'deps': ['win32'],
'deps': ['win32-desktop'],
'func': check_cc(fragment=load_fragment('wasapi.c')),
}
]
@ -583,7 +596,7 @@ video_output_features = [
} , {
'name': '--gl-win32',
'desc': 'OpenGL Win32 Backend',
'deps': [ 'win32' ],
'deps': [ 'win32-desktop' ],
'groups': [ 'gl' ],
'func': check_statement('windows.h', 'wglCreateContext(0)',
lib='opengl32')
@ -671,7 +684,7 @@ video_output_features = [
}, {
'name': '--direct3d',
'desc': 'Direct3D support',
'deps': [ 'win32' ],
'deps': [ 'win32-desktop' ],
'func': check_cc(header_name='d3d9.h'),
}, {
'name': '--android',
@ -774,7 +787,7 @@ hwaccel_features = [
}, {
'name': '--d3d-hwaccel',
'desc': 'DXVA2 and D3D11VA hwaccel',
'deps': [ 'win32' ],
'deps': [ 'win32-desktop' ],
'func': check_true,
}, {
'name': '--d3d-hwaccel-new',

58
wscript_build.py
View File

@ -101,21 +101,35 @@ def build(ctx):
ctx(features = "ebml_header", target = "ebml_types.h")
ctx(features = "ebml_definitions", target = "ebml_defs.c")
if ctx.env.DEST_OS == 'win32':
main_fn_c = 'osdep/main-fn-win.c'
elif ctx.dependency_satisfied('cocoa'):
main_fn_c = 'osdep/main-fn-cocoa.c'
else:
main_fn_c = 'osdep/main-fn-unix.c'
main_fn_c = ctx.pick_first_matching_dep([
( "osdep/main-fn-win.c", "win32-desktop" ),
( "osdep/main-fn-cocoa.c", "cocoa" ),
( "osdep/main-fn-unix.c" ),
])
getch2_c = {
'win32': 'osdep/terminal-win.c',
}.get(ctx.env.DEST_OS, "osdep/terminal-unix.c")
getch2_c = ctx.pick_first_matching_dep([
( "osdep/terminal-unix.c", "posix" ),
( "osdep/terminal-win.c", "win32-desktop" ),
( "osdep/terminal-dummy.c" ),
])
timer_c = {
'win32': 'osdep/timer-win2.c',
'darwin': 'osdep/timer-darwin.c',
}.get(ctx.env.DEST_OS, "osdep/timer-linux.c")
timer_c = ctx.pick_first_matching_dep([
( "osdep/timer-win2.c", "os-win32" ),
( "osdep/timer-darwin.c", "os-darwin" ),
( "osdep/timer-linux.c", "posix" ),
])
ipc_c = ctx.pick_first_matching_dep([
( "input/ipc-unix.c", "posix" ),
( "input/ipc-win.c", "win32-desktop" ),
( "input/ipc-dummy.c" ),
])
subprocess_c = ctx.pick_first_matching_dep([
( "osdep/subprocess-posix.c", "posix-spawn" ),
( "osdep/subprocess-win.c", "win32-desktop" ),
( "osdep/subprocess-dummy.c" ),
])
sources = [
## Audio
@ -208,10 +222,9 @@ def build(ctx):
( "input/event.c" ),
( "input/input.c" ),
( "input/ipc.c" ),
( "input/ipc-unix.c", "!mingw" ),
( "input/ipc-win.c", "mingw" ),
( ipc_c ),
( "input/keycodes.c" ),
( "input/pipe-win32.c", "mingw" ),
( "input/pipe-win32.c", "win32-pipes" ),
## Misc
( "misc/bstr.c" ),
@ -312,7 +325,7 @@ def build(ctx):
( "video/vdpau.c", "vdpau" ),
( "video/vdpau_mixer.c", "vdpau" ),
( "video/vt.c", "videotoolbox-hwaccel" ),
( "video/decode/d3d.c", "win32" ),
( "video/decode/d3d.c", "win32-desktop" ),
( "video/decode/dec_video.c"),
( "video/decode/hw_cuda.c", "cuda-hwaccel" ),
( "video/decode/hw_dxva2.c", "d3d-hwaccel" ),
@ -402,9 +415,9 @@ def build(ctx):
( "video/out/vo_wayland.c", "wayland" ),
( "video/out/vo_x11.c" , "x11" ),
( "video/out/vo_xv.c", "xv" ),
( "video/out/w32_common.c", "win32" ),
( "video/out/win32/displayconfig.c", "win32" ),
( "video/out/win32/droptarget.c", "win32" ),
( "video/out/w32_common.c", "win32-desktop" ),
( "video/out/win32/displayconfig.c", "win32-desktop" ),
( "video/out/win32/droptarget.c", "win32-desktop" ),
( "video/out/win32/exclusive_hack.c", "gl-win32" ),
( "video/out/wayland_common.c", "wayland" ),
( "video/out/wayland/buffer.c", "wayland" ),
@ -426,8 +439,7 @@ def build(ctx):
( "osdep/macosx_touchbar.m", "macos-touchbar" ),
( "osdep/semaphore_osx.c" ),
( "osdep/subprocess.c" ),
( "osdep/subprocess-posix.c", "posix-spawn" ),
( "osdep/subprocess-win.c", "os-win32" ),
( subprocess_c ),
( "osdep/path-macosx.m", "cocoa" ),
( "osdep/path-unix.c"),
( "osdep/path-win.c", "os-win32" ),
@ -435,7 +447,7 @@ def build(ctx):
( "osdep/glob-win.c", "glob-win32" ),
( "osdep/w32_keyboard.c", "os-win32" ),
( "osdep/w32_keyboard.c", "os-cygwin" ),
( "osdep/windows_utils.c", "win32" ),
( "osdep/windows_utils.c", "os-win32" ),
( "osdep/mpv.rc", "win32-executable" ),
( "osdep/win32/pthread.c", "win32-internal-pthreads"),
( "osdep/android/strnlen.c", "android"),