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libwinmedia.cpp
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libwinmedia.cpp
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/*
* libwinmedia
* -----------
* v0.0.3
* A cross-platform media playback library for C/C++ with good number of
* features.
*
* Works on Windows & Linux.
*
* https://github.com/harmonoid/libwinmedia
*
*
* Minimal Example
* ```cpp
* #include "libwinmedia/libwinmedia.hpp"
*
* int32_t main(int32_t ac, const char** av) {
* using namespace std;
* using namespace lwm;
* if (ac < 2) {
* cout << "No URI provided.\n"
* << "Example Usage:\n" << av[0]
* << " file://C:/alexmercerind/music.mp3\n" << av[0]
* << " https://alexmercerind.github.io/video.mp4\n";
* return EXIT_FAILURE;
* }
* auto player = Player(0);
* auto media = Media(av[1]);
* player.Open(vector<Media>{media});
* player.Play();
* player.events()->Position([](int32_t position) -> void {
* cout << "Current playback position is " << position << " ms.\n";
* });
* cin.get();
* return EXIT_SUCCESS;
* }
* ```
*
* MIT License
*
* Copyright (c) 2021 Hitesh Kumar Saini <saini123hitesh@gmail.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
* The above copyright notice and this permission notice shall be included in
* all
* copies or substantial portions of the Software.
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef UNICODE
#define UNICODE
#define _UNICODE
#endif
#include <cwchar>
#include <iostream>
#include <memory>
#include <thread>
#include <unordered_map>
#ifdef _WIN32
#include <Windows.h>
#include <windows.ui.xaml.hosting.desktopwindowxamlsource.h>
#include <winrt/Windows.Foundation.Collections.h>
#include <winrt/Windows.Foundation.h>
#include <winrt/Windows.Graphics.DirectX.Direct3D11.h>
#include <winrt/Windows.Graphics.DirectX.h>
#include <winrt/Windows.Graphics.Imaging.h>
#include <winrt/Windows.Media.Audio.h>
#include <winrt/Windows.Media.Core.h>
#include <winrt/Windows.Media.Playback.h>
#include <winrt/Windows.Storage.FileProperties.h>
#include <winrt/Windows.Storage.Streams.h>
#include <winrt/Windows.System.h>
#include <winrt/Windows.UI.Xaml.Controls.h>
#include <winrt/Windows.UI.Xaml.Hosting.h>
#elif __linux__
#include "linux/player.hpp"
#endif
#ifdef _WIN32
#define DLLEXPORT __declspec(dllexport)
#else
#define DLLEXPORT
#endif
#ifdef DART_VM
#include "external/dart_api/dart_api_dl.h"
#endif
#ifdef __cplusplus
extern "C" {
#endif
#ifndef LIBWINMEDIA
#define LIBWINMEDIA
#define VIDEO_WINDOW_CLASS "libwinmedia"
#define TAG_SIZE 200
#define TO_MILLISECONDS(timespan) timespan.count() / 10000
#ifdef _WIN32
auto TO_STRING = [](std::wstring wide_string) -> std::string {
if (wide_string.empty()) {
return std::string();
}
int32_t target_length = ::WideCharToMultiByte(
CP_UTF8, WC_ERR_INVALID_CHARS, wide_string.data(),
static_cast<int32_t>(wide_string.length()), nullptr, 0, nullptr, nullptr);
if (target_length == 0) {
return std::string();
}
std::string utf8_string;
utf8_string.resize(target_length);
int32_t converted_length = ::WideCharToMultiByte(
CP_UTF8, WC_ERR_INVALID_CHARS, wide_string.data(),
static_cast<int32_t>(wide_string.length()), utf8_string.data(),
target_length, nullptr, nullptr);
if (converted_length == 0) {
return std::string();
}
return utf8_string;
};
auto TO_WIDESTRING = [](std::string string) -> std::wstring {
if (string.empty()) {
return std::wstring();
}
int32_t target_length =
::MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS, string.data(),
static_cast<int32_t>(string.length()), nullptr, 0);
if (target_length == 0) {
return std::wstring();
}
std::wstring utf16_string;
utf16_string.resize(target_length);
int32_t converted_length =
::MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS, string.data(),
static_cast<int32_t>(string.length()),
utf16_string.data(), target_length);
if (converted_length == 0) {
return std::wstring();
}
return utf16_string;
};
using namespace winrt::Windows::Foundation;
using namespace winrt::Windows::Storage;
using namespace winrt::Windows::Media;
using namespace winrt::Windows::System;
using namespace winrt::Windows::UI::Xaml;
using namespace winrt::Windows::Graphics::Imaging;
using namespace winrt::Windows::Graphics::DirectX::Direct3D11;
static std::unordered_map<int32_t, Playback::MediaPlayer> g_media_players;
static std::unordered_map<int32_t, Playback::MediaPlaybackList>
g_media_playback_lists;
static std::unordered_map<int32_t, std::vector<int32_t>> g_media_ids_lists;
static std::unordered_map<int32_t, std::unique_ptr<std::thread>>
g_media_players_window_threads;
static std::unordered_map<int32_t, HWND> g_media_players_window_handles;
static std::unordered_map<int32_t, HWND> g_media_players_xaml_handles;
static std::unordered_map<int32_t, Core::MediaSource> g_medias;
static bool g_smtc_exist;
LRESULT CALLBACK VideoWindowProc(HWND, UINT, WPARAM, LPARAM);
#elif __linux__
static std::unordered_map<int32_t, std::unique_ptr<Player>> g_media_players;
static std::unordered_map<int32_t, bool> g_media_players_initialization;
static std::unordered_map<int32_t, std::promise<void>> g_media_players_promises;
void Dispatch(std::function<void()> f) {
g_idle_add_full(G_PRIORITY_HIGH_IDLE, (GSourceFunc)([](void* f) -> int32_t {
(*static_cast<std::function<void()>*>(f))();
return G_SOURCE_REMOVE;
}),
new std::function<void()>(f), [](void* f) {
delete static_cast<std::function<void()>*>(f);
});
}
void EnsureFuture(int32_t player_id) {
if (!g_media_players_initialization.at(player_id)) {
g_media_players_promises.at(player_id).get_future().wait();
g_media_players_initialization[player_id] = true;
}
}
#endif
namespace {
#ifdef DART_VM
typedef bool (*Dart_PostCObjectType)(Dart_Port port_id, Dart_CObject* message);
Dart_PostCObjectType g_dart_post_C_object;
Dart_Port g_callback_port;
DLLEXPORT void InitializeDartApi(Dart_PostCObjectType dart_post_C_object,
Dart_Port callback_port) {
g_dart_post_C_object = dart_post_C_object;
g_callback_port = callback_port;
}
#endif
DLLEXPORT void PlayerShowWindow(int32_t player_id,
const char* window_title = VIDEO_WINDOW_CLASS) {
#ifdef _WIN32
g_media_players_window_threads[player_id] =
std::make_unique<std::thread>([=]() -> void {
try {
STARTUPINFO startup_info;
GetStartupInfo(&startup_info);
WNDCLASSEXW window_class;
SecureZeroMemory(&window_class, sizeof(window_class));
window_class.cbSize = sizeof(window_class);
window_class.style = CS_HREDRAW | CS_VREDRAW;
window_class.lpfnWndProc = VideoWindowProc;
window_class.hInstance = 0;
window_class.lpszClassName =
TO_WIDESTRING(VIDEO_WINDOW_CLASS).c_str();
window_class.hCursor = ::LoadCursorW(nullptr, IDC_ARROW);
window_class.hbrBackground =
reinterpret_cast<HBRUSH>(COLOR_WINDOW + 1);
::RegisterClassExW(&window_class);
g_media_players_window_handles[player_id] = ::CreateWindowEx(
0L, TO_WIDESTRING(VIDEO_WINDOW_CLASS).c_str(),
TO_WIDESTRING(window_title).c_str(),
WS_OVERLAPPEDWINDOW | WS_VISIBLE, CW_USEDEFAULT, CW_USEDEFAULT,
CW_USEDEFAULT, CW_USEDEFAULT, nullptr, nullptr, 0, nullptr);
if (!g_media_players_window_handles[player_id]) {
throw std::exception("COULD_NOT_CREATE_WIN32_WINDOW", -1);
}
winrt::init_apartment(winrt::apartment_type::multi_threaded);
const auto window_xaml_manager =
Hosting::WindowsXamlManager::InitializeForCurrentThread();
Hosting::DesktopWindowXamlSource desktop_window_xaml_source = {};
const auto interop =
desktop_window_xaml_source.as<IDesktopWindowXamlSourceNative>();
winrt::check_hresult(interop->AttachToWindow(
g_media_players_window_handles[player_id]));
interop->get_WindowHandle(&g_media_players_xaml_handles[player_id]);
if (!g_media_players_xaml_handles[player_id]) {
throw std::exception("COULD_NOT_CREATE_XAML_SOURCE", -2);
}
SetWindowLongPtr(g_media_players_window_handles[player_id],
GWLP_USERDATA,
reinterpret_cast<LONG_PTR>(
g_media_players_xaml_handles[player_id]));
RECT rect = {0, 0, 0, 0};
::GetClientRect(g_media_players_window_handles[player_id], &rect);
::SetWindowPos(g_media_players_xaml_handles[player_id], nullptr, 0, 0,
rect.right, rect.bottom, SWP_SHOWWINDOW);
Controls::MediaPlayerElement player_element =
Controls::MediaPlayerElement();
player_element.SetMediaPlayer(g_media_players.at(player_id));
desktop_window_xaml_source.Content(player_element);
::ShowWindow(g_media_players_xaml_handles[player_id],
startup_info.wShowWindow);
::UpdateWindow(g_media_players_xaml_handles[player_id]);
MSG msg = {};
while (::GetMessageW(&msg, nullptr, 0, 0)) {
::TranslateMessage(&msg);
::DispatchMessageW(&msg);
}
} catch (...) {
std::wcerr << "PlayerShowWindow cannot be called.\n"
<< "Executable must embed a manifest with "
"maxversiontexted property in it.\n"
<< "Learn more: "
"https://docs.microsoft.com/en-us/cpp/build/"
"how-to-embed-a-manifest-inside-a-c-cpp-application\n";
}
});
#elif __linux__
g_media_players.at(player_id)->ShowWindow();
#endif
}
DLLEXPORT void PlayerCloseWindow(int32_t player_id) {
#ifdef _WIN32
if (g_media_players_window_handles.find(player_id) !=
g_media_players_window_handles.end()) {
// ::DestroyWindow will not work since window exists on another thread.
::SendMessage(g_media_players_window_handles.at(player_id), WM_CLOSE, NULL,
NULL);
g_media_players_window_handles.erase(player_id);
}
if (g_media_players_xaml_handles.find(player_id) !=
g_media_players_xaml_handles.end()) {
g_media_players_xaml_handles.erase(player_id);
}
if (g_media_players_window_threads.find(player_id) !=
g_media_players_window_threads.end()) {
g_media_players_window_threads.at(player_id)->detach();
g_media_players_window_threads.erase(player_id);
}
#elif __linux__
g_media_players.at(player_id)->CloseWindow();
#endif
}
DLLEXPORT void PlayerCreate(int32_t player_id, bool show_window = false,
const char* window_title = VIDEO_WINDOW_CLASS) {
if (g_media_players.find(player_id) != g_media_players.end()) {
return;
}
#ifdef _WIN32
g_media_players.insert(std::make_pair(player_id, Playback::MediaPlayer()));
g_media_playback_lists.insert(
std::make_pair(player_id, Playback::MediaPlaybackList()));
g_media_ids_lists.insert(std::make_pair(player_id, std::vector<int32_t>{}));
g_media_players.at(player_id).SystemMediaTransportControls().IsEnabled(false);
if (show_window) PlayerShowWindow(player_id, window_title);
#elif __linux__
g_media_players_initialization.insert(std::make_pair(player_id, false));
g_media_players_promises.insert(
std::make_pair(player_id, std::promise<void>()));
Dispatch([=]() -> void {
g_media_players.insert(std::make_pair(
player_id,
std::make_unique<Player>(player_id, show_window, window_title)));
g_media_players_promises.at(player_id).set_value();
});
#endif
}
DLLEXPORT void PlayerDispose(int32_t player_id) {
#ifdef _WIN32
g_media_players.at(player_id).Close();
PlayerCloseWindow(player_id);
if (g_media_playback_lists.find(player_id) != g_media_playback_lists.end()) {
g_media_playback_lists.erase(player_id);
}
if (g_media_ids_lists.find(player_id) != g_media_ids_lists.end()) {
g_media_ids_lists.erase(player_id);
}
if (g_media_players.find(player_id) != g_media_players.end()) {
g_media_players.erase(player_id);
}
#elif __linux__
EnsureFuture(player_id);
if (g_media_players.find(player_id) != g_media_players.end()) {
g_media_players.erase(player_id);
}
if (g_media_players_initialization.find(player_id) !=
g_media_players_initialization.end()) {
g_media_players_initialization.erase(player_id);
}
if (g_media_players_promises.find(player_id) !=
g_media_players_promises.end()) {
g_media_players_promises.erase(player_id);
}
#endif
}
DLLEXPORT void PlayerOpen(int32_t player_id, int32_t size, const char** uris,
const int32_t* ids) {
#ifdef _WIN32
g_media_players.at(player_id).Pause();
g_media_playback_lists.at(player_id).Items().Clear();
g_media_ids_lists.at(player_id).clear();
for (int32_t index = 0; index < size; index++) {
g_media_playback_lists.at(player_id).Items().Append(
Playback::MediaPlaybackItem(
Core::MediaSource::CreateFromUri(Uri(TO_WIDESTRING(uris[index])))));
g_media_ids_lists.at(player_id).emplace_back(ids[index]);
}
g_media_players.at(player_id).Source(g_media_playback_lists.at(player_id));
#ifdef DART_VM
Dart_CObject player_id_object;
player_id_object.type = Dart_CObject_kInt32;
player_id_object.value.as_int32 = player_id;
Dart_CObject type_object;
type_object.type = Dart_CObject_kString;
type_object.value.as_string = "Open";
auto uri_objects = std::unique_ptr<Dart_CObject[]>(
new Dart_CObject[g_media_playback_lists.at(player_id).Items().Size()]);
auto uri_object_refs = std::unique_ptr<Dart_CObject*[]>(
new Dart_CObject*[g_media_playback_lists.at(player_id).Items().Size()]);
std::vector<std::string> uris_str(
g_media_playback_lists.at(player_id).Items().Size());
std::vector<char*> uris_ptr(
g_media_playback_lists.at(player_id).Items().Size());
for (int32_t i = 0; i < g_media_playback_lists.at(player_id).Items().Size();
i++) {
uris_str[i] = TO_STRING(g_media_playback_lists.at(player_id)
.Items()
.GetAt(i)
.Source()
.Uri()
.ToString()
.c_str());
uris_ptr[i] = uris_str[i].data();
Dart_CObject* value_object = &uri_objects[i];
value_object->type = Dart_CObject_kString;
value_object->value.as_string = uris_ptr[i];
uri_object_refs[i] = value_object;
}
Dart_CObject uris_object;
uris_object.type = Dart_CObject_kArray;
uris_object.value.as_array.length =
g_media_playback_lists.at(player_id).Items().Size();
uris_object.value.as_array.values = uri_object_refs.get();
auto id_objects = std::unique_ptr<Dart_CObject[]>(
new Dart_CObject[g_media_playback_lists.at(player_id).Items().Size()]);
auto id_object_refs = std::unique_ptr<Dart_CObject*[]>(
new Dart_CObject*[g_media_playback_lists.at(player_id).Items().Size()]);
for (int32_t i = 0; i < g_media_ids_lists.at(player_id).size(); i++) {
Dart_CObject* value_object = &id_objects[i];
value_object->type = Dart_CObject_kInt32;
value_object->value.as_int32 = g_media_ids_lists.at(player_id)[i];
id_object_refs[i] = value_object;
}
Dart_CObject ids_object;
ids_object.type = Dart_CObject_kArray;
ids_object.value.as_array.length = g_media_ids_lists.at(player_id).size();
ids_object.value.as_array.values = id_object_refs.get();
Dart_CObject* value_objects[] = {&player_id_object, &type_object,
&uris_object, &ids_object};
Dart_CObject return_object;
return_object.type = Dart_CObject_kArray;
return_object.value.as_array.length = 4;
return_object.value.as_array.values = value_objects;
g_dart_post_C_object(g_callback_port, &return_object);
#endif
#elif __linux__
EnsureFuture(player_id);
std::vector<std::string> uris_vector;
uris_vector.reserve(size);
std::vector<int32_t> ids_vector;
ids_vector.reserve(size);
for (int32_t i = 0; i < size; i++) {
uris_vector.emplace_back(uris[i]);
ids_vector.emplace_back(ids[i]);
}
g_media_players.at(player_id)->Pause();
g_media_players.at(player_id)->Open(uris_vector, ids_vector);
#ifdef DART_VM
Dart_CObject player_id_object;
player_id_object.type = Dart_CObject_kInt32;
player_id_object.value.as_int32 = player_id;
Dart_CObject type_object;
type_object.type = Dart_CObject_kString;
type_object.value.as_string = const_cast<char*>("Open");
auto uri_objects = std::unique_ptr<Dart_CObject[]>(
new Dart_CObject[g_media_players.at(player_id)->media_uris().size()]);
auto uri_object_refs = std::unique_ptr<Dart_CObject*[]>(
new Dart_CObject*[g_media_players.at(player_id)->media_uris().size()]);
std::vector<std::string> uris_str(
g_media_players.at(player_id)->media_uris().size());
std::vector<char*> uris_ptr(
g_media_players.at(player_id)->media_uris().size());
for (int32_t i = 0; i < g_media_players.at(player_id)->media_uris().size();
i++) {
uris_str[i] = g_media_players.at(player_id)->media_uris()[i];
uris_ptr[i] = uris_str[i].data();
Dart_CObject* value_object = &uri_objects[i];
value_object->type = Dart_CObject_kString;
value_object->value.as_string = uris_ptr[i];
uri_object_refs[i] = value_object;
}
Dart_CObject uris_object;
uris_object.type = Dart_CObject_kArray;
uris_object.value.as_array.length =
g_media_players.at(player_id)->media_uris().size();
uris_object.value.as_array.values = uri_object_refs.get();
auto id_objects = std::unique_ptr<Dart_CObject[]>(
new Dart_CObject[g_media_players.at(player_id)->media_ids().size()]);
auto id_object_refs = std::unique_ptr<Dart_CObject*[]>(
new Dart_CObject*[g_media_players.at(player_id)->media_ids().size()]);
for (int32_t i = 0; i < g_media_players.at(player_id)->media_ids().size();
i++) {
Dart_CObject* value_object = &id_objects[i];
value_object->type = Dart_CObject_kInt32;
value_object->value.as_int32 =
g_media_players.at(player_id)->media_ids()[i];
id_object_refs[i] = value_object;
}
Dart_CObject ids_object;
ids_object.type = Dart_CObject_kArray;
ids_object.value.as_array.length =
g_media_players.at(player_id)->media_ids().size();
ids_object.value.as_array.values = id_object_refs.get();
Dart_CObject* value_objects[] = {&player_id_object, &type_object,
&uris_object, &ids_object};
Dart_CObject return_object;
return_object.type = Dart_CObject_kArray;
return_object.value.as_array.length = 4;
return_object.value.as_array.values = value_objects;
g_dart_post_C_object(g_callback_port, &return_object);
#endif
#endif
}
DLLEXPORT void PlayerPlay(int32_t player_id) {
#ifdef _WIN32
g_media_players.at(player_id).Play();
#elif __linux__
EnsureFuture(player_id);
g_media_players.at(player_id)->Play();
#endif
}
DLLEXPORT void PlayerPause(int32_t player_id) {
#ifdef _WIN32
g_media_players.at(player_id).Pause();
#elif __linux__
EnsureFuture(player_id);
g_media_players.at(player_id)->Pause();
#endif
}
DLLEXPORT void PlayerAdd(int32_t player_id, const char* uri, int32_t id) {
#ifdef _WIN32
g_media_playback_lists.at(player_id).Items().Append(
Playback::MediaPlaybackItem(
Core::MediaSource::CreateFromUri(Uri(TO_WIDESTRING(uri)))));
g_media_ids_lists.at(player_id).emplace_back(id);
#ifdef DART_VM
Dart_CObject player_id_object;
player_id_object.type = Dart_CObject_kInt32;
player_id_object.value.as_int32 = player_id;
Dart_CObject type_object;
type_object.type = Dart_CObject_kString;
type_object.value.as_string = "Open";
auto uri_objects = std::unique_ptr<Dart_CObject[]>(
new Dart_CObject[g_media_playback_lists.at(player_id).Items().Size()]);
auto uri_object_refs = std::unique_ptr<Dart_CObject*[]>(
new Dart_CObject*[g_media_playback_lists.at(player_id).Items().Size()]);
std::vector<std::string> uris_str(
g_media_playback_lists.at(player_id).Items().Size());
std::vector<char*> uris_ptr(
g_media_playback_lists.at(player_id).Items().Size());
for (int32_t i = 0; i < g_media_playback_lists.at(player_id).Items().Size();
i++) {
uris_str[i] = TO_STRING(g_media_playback_lists.at(player_id)
.Items()
.GetAt(i)
.Source()
.Uri()
.ToString()
.c_str());
uris_ptr[i] = uris_str[i].data();
Dart_CObject* value_object = &uri_objects[i];
value_object->type = Dart_CObject_kString;
value_object->value.as_string = uris_ptr[i];
uri_object_refs[i] = value_object;
}
Dart_CObject uris_object;
uris_object.type = Dart_CObject_kArray;
uris_object.value.as_array.length =
g_media_playback_lists.at(player_id).Items().Size();
uris_object.value.as_array.values = uri_object_refs.get();
auto id_objects = std::unique_ptr<Dart_CObject[]>(
new Dart_CObject[g_media_playback_lists.at(player_id).Items().Size()]);
auto id_object_refs = std::unique_ptr<Dart_CObject*[]>(
new Dart_CObject*[g_media_playback_lists.at(player_id).Items().Size()]);
for (int32_t i = 0; i < g_media_ids_lists.at(player_id).size(); i++) {
Dart_CObject* value_object = &id_objects[i];
value_object->type = Dart_CObject_kInt32;
value_object->value.as_int32 = g_media_ids_lists.at(player_id)[i];
id_object_refs[i] = value_object;
}
Dart_CObject ids_object;
ids_object.type = Dart_CObject_kArray;
ids_object.value.as_array.length = g_media_ids_lists.at(player_id).size();
ids_object.value.as_array.values = id_object_refs.get();
Dart_CObject* value_objects[] = {&player_id_object, &type_object,
&uris_object, &ids_object};
Dart_CObject return_object;
return_object.type = Dart_CObject_kArray;
return_object.value.as_array.length = 4;
return_object.value.as_array.values = value_objects;
g_dart_post_C_object(g_callback_port, &return_object);
#endif
#elif __linux__
EnsureFuture(player_id);
g_media_players.at(player_id)->Pause();
g_media_players.at(player_id)->Add(uri, id);
#ifdef DART_VM
Dart_CObject player_id_object;
player_id_object.type = Dart_CObject_kInt32;
player_id_object.value.as_int32 = player_id;
Dart_CObject type_object;
type_object.type = Dart_CObject_kString;
type_object.value.as_string = const_cast<char*>("Open");
auto uri_objects = std::unique_ptr<Dart_CObject[]>(
new Dart_CObject[g_media_players.at(player_id)->media_uris().size()]);
auto uri_object_refs = std::unique_ptr<Dart_CObject*[]>(
new Dart_CObject*[g_media_players.at(player_id)->media_uris().size()]);
std::vector<std::string> uris_str(
g_media_players.at(player_id)->media_uris().size());
std::vector<char*> uris_ptr(
g_media_players.at(player_id)->media_uris().size());
for (int32_t i = 0; i < g_media_players.at(player_id)->media_uris().size();
i++) {
uris_str[i] = g_media_players.at(player_id)->media_uris()[i];
uris_ptr[i] = uris_str[i].data();
Dart_CObject* value_object = &uri_objects[i];
value_object->type = Dart_CObject_kString;
value_object->value.as_string = uris_ptr[i];
uri_object_refs[i] = value_object;
}
Dart_CObject uris_object;
uris_object.type = Dart_CObject_kArray;
uris_object.value.as_array.length =
g_media_players.at(player_id)->media_uris().size();
uris_object.value.as_array.values = uri_object_refs.get();
auto id_objects = std::unique_ptr<Dart_CObject[]>(
new Dart_CObject[g_media_players.at(player_id)->media_ids().size()]);
auto id_object_refs = std::unique_ptr<Dart_CObject*[]>(
new Dart_CObject*[g_media_players.at(player_id)->media_ids().size()]);
for (int32_t i = 0; i < g_media_players.at(player_id)->media_ids().size();
i++) {
Dart_CObject* value_object = &id_objects[i];
value_object->type = Dart_CObject_kInt32;
value_object->value.as_int32 =
g_media_players.at(player_id)->media_ids()[i];
id_object_refs[i] = value_object;
}
Dart_CObject ids_object;
ids_object.type = Dart_CObject_kArray;
ids_object.value.as_array.length =
g_media_players.at(player_id)->media_ids().size();
ids_object.value.as_array.values = id_object_refs.get();
Dart_CObject* value_objects[] = {&player_id_object, &type_object,
&uris_object, &ids_object};
Dart_CObject return_object;
return_object.type = Dart_CObject_kArray;
return_object.value.as_array.length = 4;
return_object.value.as_array.values = value_objects;
g_dart_post_C_object(g_callback_port, &return_object);
#endif
#endif
}
DLLEXPORT void PlayerRemove(int32_t player_id, int32_t index) {
#ifdef _WIN32
g_media_playback_lists.at(player_id).Items().RemoveAt(index);
g_media_ids_lists.at(player_id).erase(
g_media_ids_lists.at(player_id).begin() + index);
#ifdef DART_VM
Dart_CObject player_id_object;
player_id_object.type = Dart_CObject_kInt32;
player_id_object.value.as_int32 = player_id;
Dart_CObject type_object;
type_object.type = Dart_CObject_kString;
type_object.value.as_string = "Open";
auto uri_objects = std::unique_ptr<Dart_CObject[]>(
new Dart_CObject[g_media_playback_lists.at(player_id).Items().Size()]);
auto uri_object_refs = std::unique_ptr<Dart_CObject*[]>(
new Dart_CObject*[g_media_playback_lists.at(player_id).Items().Size()]);
std::vector<std::string> uris_str(
g_media_playback_lists.at(player_id).Items().Size());
std::vector<char*> uris_ptr(
g_media_playback_lists.at(player_id).Items().Size());
for (int32_t i = 0; i < g_media_playback_lists.at(player_id).Items().Size();
i++) {
uris_str[i] = TO_STRING(g_media_playback_lists.at(player_id)
.Items()
.GetAt(i)
.Source()
.Uri()
.ToString()
.c_str());
uris_ptr[i] = uris_str[i].data();
Dart_CObject* value_object = &uri_objects[i];
value_object->type = Dart_CObject_kString;
value_object->value.as_string = uris_ptr[i];
uri_object_refs[i] = value_object;
}
Dart_CObject uris_object;
uris_object.type = Dart_CObject_kArray;
uris_object.value.as_array.length =
g_media_playback_lists.at(player_id).Items().Size();
uris_object.value.as_array.values = uri_object_refs.get();
auto id_objects = std::unique_ptr<Dart_CObject[]>(
new Dart_CObject[g_media_playback_lists.at(player_id).Items().Size()]);
auto id_object_refs = std::unique_ptr<Dart_CObject*[]>(
new Dart_CObject*[g_media_playback_lists.at(player_id).Items().Size()]);
for (int32_t i = 0; i < g_media_ids_lists.at(player_id).size(); i++) {
Dart_CObject* value_object = &id_objects[i];
value_object->type = Dart_CObject_kInt32;
value_object->value.as_int32 = g_media_ids_lists.at(player_id)[i];
id_object_refs[i] = value_object;
}
Dart_CObject ids_object;
ids_object.type = Dart_CObject_kArray;
ids_object.value.as_array.length = g_media_ids_lists.at(player_id).size();
ids_object.value.as_array.values = id_object_refs.get();
Dart_CObject* value_objects[] = {&player_id_object, &type_object,
&uris_object, &ids_object};
Dart_CObject return_object;
return_object.type = Dart_CObject_kArray;
return_object.value.as_array.length = 4;
return_object.value.as_array.values = value_objects;
g_dart_post_C_object(g_callback_port, &return_object);
#endif
#elif __linux__
// TODO (alexmercerind): Add Linux support.
#endif
}
DLLEXPORT void PlayerNext(int32_t player_id) {
#ifdef _WIN32
if (g_media_playback_lists.at(player_id).Items().Size() == 0) return;
g_media_playback_lists.at(player_id).MoveNext();
#elif __linux__
EnsureFuture(player_id);
g_media_players.at(player_id)->Next();
#endif
}
DLLEXPORT void PlayerBack(int32_t player_id) {
#ifdef _WIN32
if (g_media_playback_lists.at(player_id).Items().Size() == 0) return;
g_media_playback_lists.at(player_id).MovePrevious();
#elif __linux__
EnsureFuture(player_id);
g_media_players.at(player_id)->Back();
#endif
}
DLLEXPORT void PlayerJump(int32_t player_id, int32_t index) {
#ifdef _WIN32
if (g_media_playback_lists.at(player_id).Items().Size() == 0) return;
g_media_playback_lists.at(player_id).MoveTo(index);
#elif __linux__
EnsureFuture(player_id);
g_media_players.at(player_id)->Jump(index);
#endif
}
DLLEXPORT void PlayerSeek(int32_t player_id, int32_t position) {
#ifdef _WIN32
g_media_players.at(player_id).Position(
TimeSpan(std::chrono::milliseconds(position)));
#elif __linux__
g_media_players.at(player_id)->Seek(position);
#endif
}
DLLEXPORT void PlayerSetVolume(int32_t player_id, float volume) {
#ifdef _WIN32
g_media_players.at(player_id).Volume(volume);
#elif __linux__
EnsureFuture(player_id);
g_media_players.at(player_id)->SetVolume(volume);
#endif
}
DLLEXPORT void PlayerSetRate(int32_t player_id, float rate) {
#ifdef _WIN32
g_media_players.at(player_id).PlaybackRate(rate);
#elif __linux__
g_media_players.at(player_id)->SetRate(rate);
#endif
}
DLLEXPORT void PlayerSetAudioBalance(int32_t player_id, float audio_balance) {
#ifdef _WIN32
g_media_players.at(player_id).AudioBalance(audio_balance);
#elif __linux__
// TODO (alexmercerind): Add Linux support.
#endif
}
DLLEXPORT void PlayerSetAutoplay(int32_t player_id, bool autoplay) {
#ifdef _WIN32
g_media_players.at(player_id).AutoPlay(autoplay);
#elif __linux__
// TODO (alexmercerind): Add Linux support.
#endif
}
DLLEXPORT void PlayerSetIsLooping(int32_t player_id, bool looping) {
#ifdef _WIN32
g_media_players.at(player_id).IsLoopingEnabled(looping);
#elif __linux__
EnsureFuture(player_id);
g_media_players.at(player_id)->SetIsLooping(looping);
#endif
}
DLLEXPORT void PlayerSetIsAutoRepeat(int32_t player_id, bool autorepeat) {
#ifdef _WIN32
g_media_playback_lists.at(player_id).AutoRepeatEnabled(autorepeat);
#elif __linux__
EnsureFuture(player_id);
g_media_players.at(player_id)->SetIsAutoRepeat(autorepeat);
#endif
}
DLLEXPORT void PlayerSetIsShuffling(int32_t player_id, bool shuffling) {
#ifdef _WIN32
g_media_playback_lists.at(player_id).ShuffleEnabled(shuffling);
#elif __linux__
EnsureFuture(player_id);
g_media_players.at(player_id)->SetIsShuffling(shuffling);
#endif
}
DLLEXPORT int32_t PlayerGetPosition(int32_t player_id) {
#ifdef _WIN32
return TO_MILLISECONDS(g_media_players.at(player_id).Position());
#elif __linux__
EnsureFuture(player_id);
return g_media_players.at(player_id)->position();
#endif
}
DLLEXPORT float PlayerGetVolume(int32_t player_id) {
#ifdef _WIN32
return g_media_players.at(player_id).Volume();
#elif __linux__
EnsureFuture(player_id);
return g_media_players.at(player_id)->volume();
#endif
}
DLLEXPORT float PlayerGetRate(int32_t player_id) {
#ifdef _WIN32
return g_media_players.at(player_id).PlaybackRate();
#elif __linux__
EnsureFuture(player_id);
return g_media_players.at(player_id)->rate();
#endif
}
DLLEXPORT float PlayerGetAudioBalance(int32_t player_id) {
#ifdef _WIN32
return g_media_players.at(player_id).AudioBalance();
#elif __linux__
return 1.0f;
#endif
}
DLLEXPORT float PlayerGetDownloadProgress(int32_t player_id) {
#ifdef _WIN32
return g_media_players.at(player_id).PlaybackSession().DownloadProgress();
#elif __linux__
EnsureFuture(player_id);
return g_media_players.at(player_id)->download_progress();
#endif
}
DLLEXPORT bool PlayerIsAutoplay(int32_t player_id) {
#ifdef _WIN32
return g_media_players.at(player_id).AutoPlay();
#elif __linux__
return false;
#endif
}
DLLEXPORT bool PlayerIsLooping(int32_t player_id) {
#ifdef _WIN32
return g_media_players.at(player_id).IsLoopingEnabled();
#elif __linux__
EnsureFuture(player_id);
return g_media_players.at(player_id)->is_looping();
#endif
}
DLLEXPORT bool PlayerIsAutoRepeat(int32_t player_id) {
#ifdef _WIN32
return g_media_playback_lists.at(player_id).AutoRepeatEnabled();
#elif __linux__
EnsureFuture(player_id);
return g_media_players.at(player_id)->is_autorepeat();
#endif
}
DLLEXPORT bool PlayerIsShuffling(int32_t player_id) {
#ifdef _WIN32
return g_media_playback_lists.at(player_id).ShuffleEnabled();
#elif __linux__
EnsureFuture(player_id);
return g_media_players.at(player_id)->is_shuffling();
#endif
}
// TODO (alexmercerind): Implement frame callbacks.
// Windows:
// Current summary:
// Tried calling `CopyFrameToVideoSurface` directly upon IDirect3DSurface, which
// results in accessing invalid memory location.
// Later on tried using win2D from NuGet, but it results in class not
// registered.
//
// DLLEXPORT void PlayerSetFrameEventHandler(
// int32_t player_id, void (*callback)(uint8_t* buffer, int32_t size,
// int32_t width, int32_t height)) {
// g_media_players.at(player_id).IsVideoFrameServerEnabled(true);
// winrt::Microsoft::Graphics::Canvas::CanvasDevice canvasDevice =
// winrt::Microsoft::Graphics::Canvas::CanvasDevice::GetSharedDevice();
// SoftwareBitmap bitmap = SoftwareBitmap(BitmapPixelFormat::Rgba8, 480, 360,
// BitmapAlphaMode::Ignore);
// winrt::Microsoft::Graphics::Canvas::CanvasBitmap surface =
// winrt::Microsoft::Graphics::Canvas::CanvasBitmap::
// CreateFromSoftwareBitmap(canvasDevice, bitmap);
// g_media_players.at(player_id).VideoFrameAvailable([=](auto,
// const auto& args) -> void {
// g_media_players.at(player_id).CopyFrameToVideoSurface(surface);
// (*callback)(surface.GetPixelBytes().data(),
// surface.GetPixelBytes().size(),
// bitmap.PixelWidth(), bitmap.PixelHeight());
// });
// }
DLLEXPORT void PlayerSetIsPlayingEventHandler(
int32_t player_id, void (*callback)(bool is_playing)) {
#ifdef _WIN32
g_media_players.at(player_id).PlaybackSession().PlaybackStateChanged(
[=](auto, const auto& args) -> void {
if (g_media_players.at(player_id).PlaybackSession().PlaybackState() ==
Playback::MediaPlaybackState::Playing) {
#ifdef DART_VM
Dart_CObject player_id_object;
player_id_object.type = Dart_CObject_kInt32;
player_id_object.value.as_int32 = player_id;
Dart_CObject type_object;
type_object.type = Dart_CObject_kString;
type_object.value.as_string = "IsPlaying";
Dart_CObject is_playing_object;
is_playing_object.type = Dart_CObject_kBool;
is_playing_object.value.as_bool = true;
Dart_CObject* value_objects[] = {&player_id_object, &type_object,
&is_playing_object};
Dart_CObject return_object;
return_object.type = Dart_CObject_kArray;
return_object.value.as_array.length = 3;
return_object.value.as_array.values = value_objects;
g_dart_post_C_object(g_callback_port, &return_object);
#else
(*callback)(true);
#endif
}
if (g_media_players.at(player_id).PlaybackSession().PlaybackState() ==
Playback::MediaPlaybackState::Paused) {
#ifdef DART_VM
Dart_CObject player_id_object;
player_id_object.type = Dart_CObject_kInt32;
player_id_object.value.as_int32 = player_id;
Dart_CObject type_object;
type_object.type = Dart_CObject_kString;
type_object.value.as_string = "IsPlaying";
Dart_CObject is_playing_object;
is_playing_object.type = Dart_CObject_kBool;
is_playing_object.value.as_bool = false;
Dart_CObject* value_objects[] = {&player_id_object, &type_object,
&is_playing_object};
Dart_CObject return_object;
return_object.type = Dart_CObject_kArray;
return_object.value.as_array.length = 3;
return_object.value.as_array.values = value_objects;
g_dart_post_C_object(g_callback_port, &return_object);
#else
(*callback)(false);
#endif
}
});
#elif __linux__
EnsureFuture(player_id);
g_media_players.at(player_id)->SetIsPlayingEventHandler(
[=](bool is_playing) -> void {
#ifdef DART_VM
Dart_CObject player_id_object;
player_id_object.type = Dart_CObject_kInt32;
player_id_object.value.as_int32 = player_id;
Dart_CObject type_object;
type_object.type = Dart_CObject_kString;
type_object.value.as_string = const_cast<char*>("IsPlaying");
Dart_CObject is_playing_object;
is_playing_object.type = Dart_CObject_kBool;
is_playing_object.value.as_bool = is_playing;
Dart_CObject* value_objects[] = {&player_id_object, &type_object,
&is_playing_object};
Dart_CObject return_object;
return_object.type = Dart_CObject_kArray;
return_object.value.as_array.length = 3;
return_object.value.as_array.values = value_objects;
g_dart_post_C_object(g_callback_port, &return_object);
#else
(*callback)(is_playing);
#endif
});
#endif
}
DLLEXPORT void PlayerSetIsCompletedEventHandler(
int32_t player_id, void (*callback)(bool is_completed)) {
#ifdef _WIN32
g_media_players.at(player_id).MediaEnded([=](auto, const auto& args) -> void {
#ifdef DART_VM
Dart_CObject player_id_object;