OpenTTD Source
20241108-master-g80f628063a
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Playing music via DirectMusic. More...
#include "../stdafx.h"
#include "../debug.h"
#include "../os/windows/win32.h"
#include "../core/mem_func.hpp"
#include "../thread.h"
#include "../fileio_func.h"
#include "../base_media_base.h"
#include "dmusic.h"
#include "midifile.hpp"
#include "midi.h"
#include <windows.h>
#include <dmksctrl.h>
#include <dmusicc.h>
#include <mutex>
#include "../safeguards.h"
Go to the source code of this file.
Data Structures | |
struct | DLSFile |
A DLS file. More... | |
struct | DLSFile::DLSRegion |
An instrument region maps a note range to wave data. More... | |
struct | DLSFile::DLSInstrument |
Instrument definition read from a DLS file. More... | |
struct | DLSFile::DLSWave |
Wave data definition from a DLS file. More... | |
struct | PlaybackSegment |
Macros | |
#define | INITGUID |
#define | FOURCC_INFO mmioFOURCC('I', 'N', 'F', 'O') |
#define | FOURCC_fmt mmioFOURCC('f', 'm', 't', ' ') |
#define | FOURCC_data mmioFOURCC('d', 'a', 't', 'a') |
Functions | |
PACK_N (struct ChunkHeader { FOURCC type;DWORD length;}, 2) | |
A RIFF chunk header. | |
PACK_N (struct WAVE_DOWNLOAD { DMUS_DOWNLOADINFO dlInfo;ULONG ulOffsetTable[2];DMUS_WAVE dmWave;DMUS_WAVEDATA dmWaveData;}, 2) | |
Buffer format for a DLS wave download. | |
static uint8_t | ScaleVolume (uint8_t original, uint8_t scale) |
static void | TransmitChannelMsg (IDirectMusicBuffer *buffer, REFERENCE_TIME rt, uint8_t status, uint8_t p1, uint8_t p2=0) |
static void | TransmitSysex (IDirectMusicBuffer *buffer, REFERENCE_TIME rt, const uint8_t *&msg_start, size_t &remaining) |
static void | TransmitStandardSysex (IDirectMusicBuffer *buffer, REFERENCE_TIME rt, MidiSysexMessage msg) |
static void | TransmitNotesOff (IDirectMusicBuffer *buffer, REFERENCE_TIME block_time, REFERENCE_TIME cur_time) |
Transmit 'Note off' messages to all MIDI channels. | |
static void | MidiThreadProc () |
static void * | DownloadArticulationData (int base_offset, void *data, const std::vector< CONNECTION > &artic) |
static const char * | LoadDefaultDLSFile (const char *user_dls) |
Variables | |
static const int | MS_TO_REFTIME = 1000 * 10 |
DirectMusic time base is 100 ns. | |
static const int | MIDITIME_TO_REFTIME = 10 |
Time base of the midi file reader is 1 us. | |
struct { | |
bool shutdown | |
flag to indicate playback thread shutdown | |
bool playing | |
flag indicating that playback is active | |
bool do_start | |
flag for starting playback of next_file at next opportunity | |
bool do_stop | |
flag for stopping playback at next opportunity | |
int preload_time | |
preload time for music blocks. | |
uint8_t new_volume | |
volume setting to change to | |
MidiFile next_file | |
upcoming file to play | |
PlaybackSegment next_segment | |
segment info for upcoming file | |
} | _playback |
static std::thread | _dmusic_thread |
Handle to our worker thread. | |
static HANDLE | _thread_event = nullptr |
Event to signal the thread that it should look at a state change. | |
static std::mutex | _thread_mutex |
Lock access to playback data that is not thread-safe. | |
static IDirectMusic * | _music = nullptr |
The direct music object manages buffers and ports. | |
static IDirectMusicPort * | _port = nullptr |
The port object lets us send MIDI data to the synthesizer. | |
static IDirectMusicBuffer * | _buffer = nullptr |
The buffer object collects the data to sent. | |
static std::vector< IDirectMusicDownload * > | _dls_downloads |
List of downloaded DLS instruments. | |
static FMusicDriver_DMusic | iFMusicDriver_DMusic |
Playing music via DirectMusic.
Definition in file dmusic.cpp.