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🎥 Command line media player
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C
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899/* * conredir, a hack to get working console IO with Windows GUI applications * * Copyright (c) 2013, Martin Herkt * * Permission to use, copy, modify, and/or distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
#include <stdio.h>#include <windows.h>
// copied from osdep/io.h since this file is standalone#define MP_PATH_MAX (32000)
int wmain(int argc, wchar_t **argv, wchar_t **envp);
static void cr_perror(const wchar_t *prefix){ wchar_t *error;
FormatMessageW(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, NULL, GetLastError(), MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (LPWSTR)&error, 0, NULL);
fwprintf(stderr, L"%ls: %ls", prefix, error); LocalFree(error);}
static int cr_runproc(wchar_t *name, wchar_t *cmdline){ DWORD retval = 1;
// Copy the list of inherited CRT file descriptors to the new process STARTUPINFOW our_si = {sizeof(our_si)}; GetStartupInfoW(&our_si);
// Don't redirect std streams if they are attached to a console. Let mpv // attach to the console directly in this case. In theory, it should work // out of the box because "console-like" handles should be managed by Windows // internally, which works for INPUT and OUTPUT, but in certain cases, // not for ERROR. DWORD mode; HANDLE hStdInput = GetStdHandle(STD_INPUT_HANDLE); HANDLE hStdOutput = GetStdHandle(STD_OUTPUT_HANDLE); HANDLE hStdError = GetStdHandle(STD_ERROR_HANDLE); STARTUPINFOW si = { .cb = sizeof(si), .lpReserved2 = our_si.lpReserved2, .cbReserved2 = our_si.cbReserved2, .hStdInput = GetConsoleMode(hStdInput, &mode) ? NULL : hStdInput, .hStdOutput = GetConsoleMode(hStdOutput, &mode) ? NULL : hStdOutput, .hStdError = GetConsoleMode(hStdError, &mode) ? NULL : hStdError, }; si.dwFlags = (si.hStdInput || si.hStdOutput || si.hStdError) ? STARTF_USESTDHANDLES : 0; PROCESS_INFORMATION pi = {0}; if (!CreateProcessW(name, cmdline, NULL, NULL, TRUE, 0, NULL, NULL, &si, &pi)) {
cr_perror(L"CreateProcess"); } else { WaitForSingleObject(pi.hProcess, INFINITE); GetExitCodeProcess(pi.hProcess, &retval); CloseHandle(pi.hProcess); CloseHandle(pi.hThread); }
return (int)retval;}
int wmain(int argc, wchar_t **argv, wchar_t **envp){ wchar_t *cmd; wchar_t *exe;
cmd = GetCommandLineW(); exe = LocalAlloc(LPTR, MP_PATH_MAX * sizeof(wchar_t)); GetModuleFileNameW(NULL, exe, MP_PATH_MAX); wcscpy(wcsrchr(exe, '.') + 1, L"exe");
// Set an environment variable so the child process can tell whether it // was started from this wrapper and attach to the console accordingly SetEnvironmentVariableW(L"_started_from_console", L"yes");
return cr_runproc(exe, cmd);}