/***************************************************************************** * directx.c: Windows DirectX audio output method ***************************************************************************** * Copyright (C) 2001 the VideoLAN team * $Id$ * * Authors: Gildas Bazin <gbazin@videolan.org> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA. *****************************************************************************/ /***************************************************************************** * Preamble *****************************************************************************/ #ifdef HAVE_CONFIG_H # include "config.h" #endif #include <vlc_common.h> #include <vlc_plugin.h> #include <vlc_aout.h> #include <windows.h> #include <mmsystem.h> #include <dsound.h> #define FRAME_SIZE ((int)p_aout->output.output.i_rate/20) /* Size in samples */ #define FRAMES_NUM 8 /* Needs to be > 3 */ /***************************************************************************** * DirectSound GUIDs. * Defining them here allows us to get rid of the dxguid library during * the linking stage. *****************************************************************************/ #include <initguid.h> /***************************************************************************** * Useful macros *****************************************************************************/ #ifndef WAVE_FORMAT_IEEE_FLOAT # define WAVE_FORMAT_IEEE_FLOAT 0x0003 #endif #ifndef WAVE_FORMAT_DOLBY_AC3_SPDIF # define WAVE_FORMAT_DOLBY_AC3_SPDIF 0x0092 #endif #ifndef WAVE_FORMAT_EXTENSIBLE #define WAVE_FORMAT_EXTENSIBLE 0xFFFE #endif #ifndef SPEAKER_FRONT_LEFT # define SPEAKER_FRONT_LEFT 0x1 # define SPEAKER_FRONT_RIGHT 0x2 # define SPEAKER_FRONT_CENTER 0x4 # define SPEAKER_LOW_FREQUENCY 0x8 # define SPEAKER_BACK_LEFT 0x10 # define SPEAKER_BACK_RIGHT 0x20 # define SPEAKER_FRONT_LEFT_OF_CENTER 0x40 # define SPEAKER_FRONT_RIGHT_OF_CENTER 0x80 # define SPEAKER_BACK_CENTER 0x100 # define SPEAKER_SIDE_LEFT 0x200 # define SPEAKER_SIDE_RIGHT 0x400 # define SPEAKER_TOP_CENTER 0x800 # define SPEAKER_TOP_FRONT_LEFT 0x1000 # define SPEAKER_TOP_FRONT_CENTER 0x2000 # define SPEAKER_TOP_FRONT_RIGHT 0x4000 # define SPEAKER_TOP_BACK_LEFT 0x8000 # define SPEAKER_TOP_BACK_CENTER 0x10000 # define SPEAKER_TOP_BACK_RIGHT 0x20000 # define SPEAKER_RESERVED 0x80000000 #endif #ifndef DSSPEAKER_DSSPEAKER_DIRECTOUT # define DSSPEAKER_DSSPEAKER_DIRECTOUT 0x00000000 #endif #ifndef DSSPEAKER_HEADPHONE # define DSSPEAKER_HEADPHONE 0x00000001 #endif #ifndef DSSPEAKER_MONO # define DSSPEAKER_MONO 0x00000002 #endif #ifndef DSSPEAKER_QUAD # define DSSPEAKER_QUAD 0x00000003 #endif #ifndef DSSPEAKER_STEREO # define DSSPEAKER_STEREO 0x00000004 #endif #ifndef DSSPEAKER_SURROUND # define DSSPEAKER_SURROUND 0x00000005 #endif #ifndef DSSPEAKER_5POINT1 # define DSSPEAKER_5POINT1 0x00000006 #endif #ifndef DSSPEAKER_7POINT1 # define DSSPEAKER_7POINT1 0x00000007 #endif #ifndef DSSPEAKER_7POINT1_SURROUND # define DSSPEAKER_7POINT1_SURROUND 0x00000008 #endif #ifndef DSSPEAKER_7POINT1_WIDE # define DSSPEAKER_7POINT1_WIDE DSSPEAKER_7POINT1 #endif #ifndef _WAVEFORMATEXTENSIBLE_ typedef struct { WAVEFORMATEX Format; union { WORD wValidBitsPerSample; /* bits of precision */ WORD wSamplesPerBlock; /* valid if wBitsPerSample==0 */ WORD wReserved; /* If neither applies, set to zero. */ } Samples; DWORD dwChannelMask; /* which channels are */ /* present in stream */ GUID SubFormat; } WAVEFORMATEXTENSIBLE, *PWAVEFORMATEXTENSIBLE; #endif DEFINE_GUID( _KSDATAFORMAT_SUBTYPE_IEEE_FLOAT, WAVE_FORMAT_IEEE_FLOAT, 0x0000, 0x0010, 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 ); DEFINE_GUID( _KSDATAFORMAT_SUBTYPE_PCM, WAVE_FORMAT_PCM, 0x0000, 0x0010, 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 ); DEFINE_GUID( _KSDATAFORMAT_SUBTYPE_DOLBY_AC3_SPDIF, WAVE_FORMAT_DOLBY_AC3_SPDIF, 0x0000, 0x0010, 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 ); /***************************************************************************** * notification_thread_t: DirectX event thread *****************************************************************************/ typedef struct notification_thread_t { VLC_COMMON_MEMBERS aout_instance_t *p_aout; int i_frame_size; /* size in bytes of one frame */ int i_write_slot; /* current write position in our circular buffer */ mtime_t start_date; HANDLE event; } notification_thread_t; /***************************************************************************** * aout_sys_t: directx audio output method descriptor ***************************************************************************** * This structure is part of the audio output thread descriptor. * It describes the direct sound specific properties of an audio device. *****************************************************************************/ struct aout_sys_t { HINSTANCE hdsound_dll; /* handle of the opened dsound dll */ int i_device_id; /* user defined device */ LPGUID p_device_guid; LPDIRECTSOUND p_dsobject; /* main Direct Sound object */ LPDIRECTSOUNDBUFFER p_dsbuffer; /* the sound buffer we use (direct sound * takes care of mixing all the * secondary buffers into the primary) */ notification_thread_t *p_notif; /* DirectSoundThread id */ int b_playing; /* playing status */ int i_frame_size; /* Size in bytes of one frame */ bool b_chan_reorder; /* do we need channel reordering */ int pi_chan_table[AOUT_CHAN_MAX]; uint32_t i_channel_mask; uint32_t i_bits_per_sample; uint32_t i_channels; }; static const uint32_t pi_channels_src[] = { AOUT_CHAN_LEFT, AOUT_CHAN_RIGHT, AOUT_CHAN_MIDDLELEFT, AOUT_CHAN_MIDDLERIGHT, AOUT_CHAN_REARLEFT, AOUT_CHAN_REARRIGHT, AOUT_CHAN_CENTER, AOUT_CHAN_LFE, 0 }; static const uint32_t pi_channels_in[] = { SPEAKER_FRONT_LEFT, SPEAKER_FRONT_RIGHT, SPEAKER_SIDE_LEFT, SPEAKER_SIDE_RIGHT, SPEAKER_BACK_LEFT, SPEAKER_BACK_RIGHT, SPEAKER_FRONT_CENTER, SPEAKER_LOW_FREQUENCY, 0 }; static const uint32_t pi_channels_out[] = { SPEAKER_FRONT_LEFT, SPEAKER_FRONT_RIGHT, SPEAKER_FRONT_CENTER, SPEAKER_LOW_FREQUENCY, SPEAKER_BACK_LEFT, SPEAKER_BACK_RIGHT, SPEAKER_SIDE_LEFT, SPEAKER_SIDE_RIGHT, 0 }; /***************************************************************************** * Local prototypes. *****************************************************************************/ static int OpenAudio ( vlc_object_t * ); static void CloseAudio ( vlc_object_t * ); static void Play ( aout_instance_t * ); /* local functions */ static void Probe ( aout_instance_t * ); static int InitDirectSound ( aout_instance_t * ); static int CreateDSBuffer ( aout_instance_t *, int, int, int, int, int, bool ); static int CreateDSBufferPCM ( aout_instance_t *, int*, int, int, int, bool ); static void DestroyDSBuffer ( aout_instance_t * ); static void DirectSoundThread ( notification_thread_t * ); static int FillBuffer ( aout_instance_t *, int, aout_buffer_t * ); /***************************************************************************** * Module descriptor *****************************************************************************/ #define DEVICE_TEXT N_("Output device") #define DEVICE_LONGTEXT N_( \ "DirectX device number: 0 default device, 1..N device by number" \ "(Note that the default device appears as 0 AND another number)." ) #define FLOAT_TEXT N_("Use float32 output") #define FLOAT_LONGTEXT N_( \ "The option allows you to enable or disable the high-quality float32 " \ "audio output mode (which is not well supported by some soundcards)." ) vlc_module_begin(); set_description( N_("DirectX audio output") ); set_shortname( "DirectX" ); set_capability( "audio output", 100 ); set_category( CAT_AUDIO ); set_subcategory( SUBCAT_AUDIO_AOUT ); add_shortcut( "directx" ); add_integer( "directx-audio-device", 0, NULL, DEVICE_TEXT, DEVICE_LONGTEXT, true ); add_bool( "directx-audio-float32", 0, 0, FLOAT_TEXT, FLOAT_LONGTEXT, true ); set_callbacks( OpenAudio, CloseAudio ); vlc_module_end(); /***************************************************************************** * OpenAudio: open the audio device ***************************************************************************** * This function opens and setups Direct Sound. *****************************************************************************/ static int OpenAudio( vlc_object_t *p_this ) { aout_instance_t * p_aout = (aout_instance_t *)p_this; vlc_value_t val; msg_Dbg( p_aout, "OpenAudio" ); /* Allocate structure */ p_aout->output.p_sys = malloc( sizeof( aout_sys_t ) ); if( p_aout->output.p_sys == NULL ) return VLC_ENOMEM; /* Initialize some variables */ p_aout->output.p_sys->p_dsobject = NULL; p_aout->output.p_sys->p_dsbuffer = NULL; p_aout->output.p_sys->p_notif = NULL; p_aout->output.p_sys->b_playing = 0; p_aout->output.pf_play = Play; aout_VolumeSoftInit( p_aout ); /* Retrieve config values */ var_Create( p_aout, "directx-audio-float32", VLC_VAR_BOOL | VLC_VAR_DOINHERIT ); var_Create( p_aout, "directx-audio-device", VLC_VAR_INTEGER|VLC_VAR_DOINHERIT ); var_Get( p_aout, "directx-audio-device", &val ); p_aout->output.p_sys->i_device_id = val.i_int; p_aout->output.p_sys->p_device_guid = 0; /* Initialise DirectSound */ if( InitDirectSound( p_aout ) ) { msg_Err( p_aout, "cannot initialize DirectSound" ); goto error; } if( var_Type( p_aout, "audio-device" ) == 0 ) { Probe( p_aout ); } if( var_Get( p_aout, "audio-device", &val ) < 0 ) { /* Probe() has failed. */ goto error; } /* Open the device */ if( val.i_int == AOUT_VAR_SPDIF ) { p_aout->output.output.i_format = VLC_FOURCC('s','p','d','i'); /* Calculate the frame size in bytes */ p_aout->output.i_nb_samples = A52_FRAME_NB; p_aout->output.output.i_bytes_per_frame = AOUT_SPDIF_SIZE; p_aout->output.output.i_frame_length = A52_FRAME_NB; p_aout->output.p_sys->i_frame_size = p_aout->output.output.i_bytes_per_frame; if( CreateDSBuffer( p_aout, VLC_FOURCC('s','p','d','i'), p_aout->output.output.i_physical_channels, aout_FormatNbChannels( &p_aout->output.output ), p_aout->output.output.i_rate, p_aout->output.p_sys->i_frame_size, false ) != VLC_SUCCESS ) { msg_Err( p_aout, "cannot open directx audio device" ); free( p_aout->output.p_sys ); return VLC_EGENERIC; } aout_VolumeNoneInit( p_aout ); } else { if( val.i_int == AOUT_VAR_5_1 ) { p_aout->output.output.i_physical_channels = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT | AOUT_CHAN_LFE; } else if( val.i_int == AOUT_VAR_7_1 ) { p_aout->output.output.i_physical_channels = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT | AOUT_CHAN_MIDDLELEFT | AOUT_CHAN_MIDDLERIGHT | AOUT_CHAN_LFE; } else if( val.i_int == AOUT_VAR_3F2R ) { p_aout->output.output.i_physical_channels = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT; } else if( val.i_int == AOUT_VAR_2F2R ) { p_aout->output.output.i_physical_channels = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT; } else if( val.i_int == AOUT_VAR_MONO ) { p_aout->output.output.i_physical_channels = AOUT_CHAN_CENTER; } else { p_aout->output.output.i_physical_channels = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT; } if( CreateDSBufferPCM( p_aout, &p_aout->output.output.i_format, p_aout->output.output.i_physical_channels, aout_FormatNbChannels( &p_aout->output.output ), p_aout->output.output.i_rate, false ) != VLC_SUCCESS ) { msg_Err( p_aout, "cannot open directx audio device" ); free( p_aout->output.p_sys ); return VLC_EGENERIC; } /* Calculate the frame size in bytes */ p_aout->output.i_nb_samples = FRAME_SIZE; aout_FormatPrepare( &p_aout->output.output ); aout_VolumeSoftInit( p_aout ); } /* Now we need to setup our DirectSound play notification structure */ p_aout->output.p_sys->p_notif = vlc_object_create( p_aout, sizeof(notification_thread_t) ); p_aout->output.p_sys->p_notif->p_aout = p_aout; p_aout->output.p_sys->p_notif->event = CreateEvent( 0, FALSE, FALSE, 0 ); p_aout->output.p_sys->p_notif->i_frame_size = p_aout->output.p_sys->i_frame_size; /* then launch the notification thread */ msg_Dbg( p_aout, "creating DirectSoundThread" ); if( vlc_thread_create( p_aout->output.p_sys->p_notif, "DirectSound Notification Thread", DirectSoundThread, VLC_THREAD_PRIORITY_HIGHEST, false ) ) { msg_Err( p_aout, "cannot create DirectSoundThread" ); CloseHandle( p_aout->output.p_sys->p_notif->event ); vlc_object_release( p_aout->output.p_sys->p_notif ); p_aout->output.p_sys->p_notif = NULL; goto error; } vlc_object_attach( p_aout->output.p_sys->p_notif, p_aout ); return VLC_SUCCESS; error: CloseAudio( VLC_OBJECT(p_aout) ); return VLC_EGENERIC; } /***************************************************************************** * Probe: probe the audio device for available formats and channels *****************************************************************************/ static void Probe( aout_instance_t * p_aout ) { vlc_value_t val, text; int i_format; unsigned int i_physical_channels; DWORD ui_speaker_config; bool is_default_output_set = false; var_Create( p_aout, "audio-device", VLC_VAR_INTEGER | VLC_VAR_HASCHOICE ); text.psz_string = _("Audio Device"); var_Change( p_aout, "audio-device", VLC_VAR_SETTEXT, &text, NULL ); /* Test for 5.1 support */ i_physical_channels = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT | AOUT_CHAN_LFE; if( p_aout->output.output.i_physical_channels == i_physical_channels ) { if( CreateDSBufferPCM( p_aout, &i_format, i_physical_channels, 6, p_aout->output.output.i_rate, true ) == VLC_SUCCESS ) { val.i_int = AOUT_VAR_5_1; text.psz_string = "5.1"; var_Change( p_aout, "audio-device", VLC_VAR_ADDCHOICE, &val, &text ); var_Change( p_aout, "audio-device", VLC_VAR_SETDEFAULT, &val, NULL ); is_default_output_set = true; msg_Dbg( p_aout, "device supports 5.1 channels" ); } } /* Test for 7.1 support */ i_physical_channels = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER | AOUT_CHAN_REARLEFT | AOUT_CHAN_MIDDLELEFT | AOUT_CHAN_MIDDLERIGHT | AOUT_CHAN_REARRIGHT | AOUT_CHAN_LFE; if( p_aout->output.output.i_physical_channels == i_physical_channels ) { if( CreateDSBufferPCM( p_aout, &i_format, i_physical_channels, 8, p_aout->output.output.i_rate, true ) == VLC_SUCCESS ) { val.i_int = AOUT_VAR_7_1; text.psz_string = "7.1"; var_Change( p_aout, "audio-device", VLC_VAR_ADDCHOICE, &val, &text ); var_Change( p_aout, "audio-device", VLC_VAR_SETDEFAULT, &val, NULL ); is_default_output_set = true; msg_Dbg( p_aout, "device supports 7.1 channels" ); } } /* Test for 3 Front 2 Rear support */ i_physical_channels = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT; if( p_aout->output.output.i_physical_channels == i_physical_channels ) { if( CreateDSBufferPCM( p_aout, &i_format, i_physical_channels, 5, p_aout->output.output.i_rate, true ) == VLC_SUCCESS ) { val.i_int = AOUT_VAR_3F2R; text.psz_string = N_("3 Front 2 Rear"); var_Change( p_aout, "audio-device", VLC_VAR_ADDCHOICE, &val, &text ); if(!is_default_output_set) { var_Change( p_aout, "audio-device", VLC_VAR_SETDEFAULT, &val, NULL ); is_default_output_set = true; } msg_Dbg( p_aout, "device supports 5 channels" ); } } /* Test for 2 Front 2 Rear support */ i_physical_channels = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT; if( ( p_aout->output.output.i_physical_channels & i_physical_channels ) == i_physical_channels ) { if( CreateDSBufferPCM( p_aout, &i_format, i_physical_channels, 4, p_aout->output.output.i_rate, true ) == VLC_SUCCESS ) { val.i_int = AOUT_VAR_2F2R; text.psz_string = N_("2 Front 2 Rear"); var_Change( p_aout, "audio-device", VLC_VAR_ADDCHOICE, &val, &text ); if(!is_default_output_set) { var_Change( p_aout, "audio-device", VLC_VAR_SETDEFAULT, &val, NULL ); is_default_output_set = true; } msg_Dbg( p_aout, "device supports 4 channels" ); } } /* Test for stereo support */ i_physical_channels = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT; if( CreateDSBufferPCM( p_aout, &i_format, i_physical_channels, 2, p_aout->output.output.i_rate, true ) == VLC_SUCCESS ) { val.i_int = AOUT_VAR_STEREO; text.psz_string = N_("Stereo"); var_Change( p_aout, "audio-device", VLC_VAR_ADDCHOICE, &val, &text ); if(!is_default_output_set) { var_Change( p_aout, "audio-device", VLC_VAR_SETDEFAULT, &val, NULL ); is_default_output_set = true; msg_Dbg( p_aout, "device supports 2 channels (DEFAULT!)" ); } msg_Dbg( p_aout, "device supports 2 channels" ); } /* Test for mono support */ i_physical_channels = AOUT_CHAN_CENTER; if( CreateDSBufferPCM( p_aout, &i_format, i_physical_channels, 1, p_aout->output.output.i_rate, true ) == VLC_SUCCESS ) { val.i_int = AOUT_VAR_MONO; text.psz_string = N_("Mono"); var_Change( p_aout, "audio-device", VLC_VAR_ADDCHOICE, &val, &text ); msg_Dbg( p_aout, "device supports 1 channel" ); } /* Check the speaker configuration to determine which channel config should * be the default */ if FAILED( IDirectSound_GetSpeakerConfig( p_aout->output.p_sys->p_dsobject, &ui_speaker_config ) ) { ui_speaker_config = DSSPEAKER_STEREO; msg_Dbg( p_aout, "GetSpeakerConfig failed" ); } switch( DSSPEAKER_CONFIG(ui_speaker_config) ) { case DSSPEAKER_7POINT1: msg_Dbg( p_aout, "Windows says your SpeakerConfig is 7.1" ); val.i_int = AOUT_VAR_7_1; break; case DSSPEAKER_5POINT1: msg_Dbg( p_aout, "Windows says your SpeakerConfig is 5.1" ); val.i_int = AOUT_VAR_5_1; break; case DSSPEAKER_QUAD: msg_Dbg( p_aout, "Windows says your SpeakerConfig is Quad" ); val.i_int = AOUT_VAR_2F2R; break; #if 0 /* Lots of people just get their settings wrong and complain that * this is a problem with VLC so just don't ever set mono by default. */ case DSSPEAKER_MONO: val.i_int = AOUT_VAR_MONO; break; #endif case DSSPEAKER_SURROUND: msg_Dbg( p_aout, "Windows says your SpeakerConfig is surround" ); case DSSPEAKER_STEREO: msg_Dbg( p_aout, "Windows says your SpeakerConfig is stereo" ); default: /* If nothing else is found, choose stereo output */ val.i_int = AOUT_VAR_STEREO; break; } var_Set( p_aout, "audio-device", val ); /* Test for SPDIF support */ if ( AOUT_FMT_NON_LINEAR( &p_aout->output.output ) ) { if( CreateDSBuffer( p_aout, VLC_FOURCC('s','p','d','i'), p_aout->output.output.i_physical_channels, aout_FormatNbChannels( &p_aout->output.output ), p_aout->output.output.i_rate, AOUT_SPDIF_SIZE, true ) == VLC_SUCCESS ) { msg_Dbg( p_aout, "device supports A/52 over S/PDIF" ); val.i_int = AOUT_VAR_SPDIF; text.psz_string = N_("A/52 over S/PDIF"); var_Change( p_aout, "audio-device", VLC_VAR_ADDCHOICE, &val, &text ); if( config_GetInt( p_aout, "spdif" ) ) var_Set( p_aout, "audio-device", val ); } } var_Change( p_aout, "audio-device", VLC_VAR_CHOICESCOUNT, &val, NULL ); if( val.i_int <= 0 ) { /* Probe() has failed. */ var_Destroy( p_aout, "audio-device" ); return; } var_AddCallback( p_aout, "audio-device", aout_ChannelsRestart, NULL ); val.b_bool = true; var_Set( p_aout, "intf-change", val ); } /***************************************************************************** * Play: we'll start playing the directsound buffer here because at least here * we know the first buffer has been put in the aout fifo and we also * know its date. *****************************************************************************/ static void Play( aout_instance_t *p_aout ) { if( !p_aout->output.p_sys->b_playing ) { aout_buffer_t *p_buffer; int i; p_aout->output.p_sys->b_playing = 1; /* get the playing date of the first aout buffer */ p_aout->output.p_sys->p_notif->start_date = aout_FifoFirstDate( p_aout, &p_aout->output.fifo ); /* fill in the first samples */ for( i = 0; i < FRAMES_NUM; i++ ) { p_buffer = aout_FifoPop( p_aout, &p_aout->output.fifo ); if( !p_buffer ) break; FillBuffer( p_aout, i, p_buffer ); } /* wake up the audio output thread */ SetEvent( p_aout->output.p_sys->p_notif->event ); } } /***************************************************************************** * CloseAudio: close the audio device *****************************************************************************/ static void CloseAudio( vlc_object_t *p_this ) { aout_instance_t * p_aout = (aout_instance_t *)p_this; aout_sys_t *p_sys = p_aout->output.p_sys; msg_Dbg( p_aout, "closing audio device" ); /* kill the position notification thread, if any */ if( p_sys->p_notif ) { vlc_object_detach( p_sys->p_notif ); vlc_object_kill( p_sys->p_notif ); /* wake up the audio thread if needed */ if( !p_sys->b_playing ) SetEvent( p_sys->p_notif->event ); vlc_thread_join( p_sys->p_notif ); vlc_object_release( p_sys->p_notif ); } /* release the secondary buffer */ DestroyDSBuffer( p_aout ); /* finally release the DirectSound object */ if( p_sys->p_dsobject ) IDirectSound_Release( p_sys->p_dsobject ); /* free DSOUND.DLL */ if( p_sys->hdsound_dll ) FreeLibrary( p_sys->hdsound_dll ); free( p_aout->output.p_sys->p_device_guid ); free( p_sys ); } /***************************************************************************** * CallBackDirectSoundEnum: callback to enumerate available devices *****************************************************************************/ static int CALLBACK CallBackDirectSoundEnum( LPGUID p_guid, LPCSTR psz_desc, LPCSTR psz_mod, LPVOID _p_aout ) { aout_instance_t *p_aout = (aout_instance_t *)_p_aout; msg_Dbg( p_aout, "found device: %s", psz_desc ); if( p_aout->output.p_sys->i_device_id == 0 && p_guid ) { p_aout->output.p_sys->p_device_guid = malloc( sizeof( GUID ) ); *p_aout->output.p_sys->p_device_guid = *p_guid; msg_Dbg( p_aout, "using device: %s", psz_desc ); } p_aout->output.p_sys->i_device_id--; return 1; } /***************************************************************************** * InitDirectSound: handle all the gory details of DirectSound initialisation *****************************************************************************/ static int InitDirectSound( aout_instance_t *p_aout ) { HRESULT (WINAPI *OurDirectSoundCreate)(LPGUID, LPDIRECTSOUND *, LPUNKNOWN); HRESULT (WINAPI *OurDirectSoundEnumerate)(LPDSENUMCALLBACK, LPVOID); p_aout->output.p_sys->hdsound_dll = LoadLibrary("DSOUND.DLL"); if( p_aout->output.p_sys->hdsound_dll == NULL ) { msg_Warn( p_aout, "cannot open DSOUND.DLL" ); goto error; } OurDirectSoundCreate = (void *) GetProcAddress( p_aout->output.p_sys->hdsound_dll, "DirectSoundCreate" ); if( OurDirectSoundCreate == NULL ) { msg_Warn( p_aout, "GetProcAddress FAILED" ); goto error; } /* Get DirectSoundEnumerate */ OurDirectSoundEnumerate = (void *) GetProcAddress( p_aout->output.p_sys->hdsound_dll, "DirectSoundEnumerateA" ); if( OurDirectSoundEnumerate ) { /* Attempt enumeration */ if( FAILED( OurDirectSoundEnumerate( CallBackDirectSoundEnum, p_aout ) ) ) { msg_Dbg( p_aout, "enumeration of DirectSound devices failed" ); } } /* Create the direct sound object */ if FAILED( OurDirectSoundCreate( p_aout->output.p_sys->p_device_guid, &p_aout->output.p_sys->p_dsobject, NULL ) ) { msg_Warn( p_aout, "cannot create a direct sound device" ); goto error; } /* Set DirectSound Cooperative level, ie what control we want over Windows * sound device. In our case, DSSCL_EXCLUSIVE means that we can modify the * settings of the primary buffer, but also that only the sound of our * application will be hearable when it will have the focus. * !!! (this is not really working as intended yet because to set the * cooperative level you need the window handle of your application, and * I don't know of any easy way to get it. Especially since we might play * sound without any video, and so what window handle should we use ??? * The hack for now is to use the Desktop window handle - it seems to be * working */ if( IDirectSound_SetCooperativeLevel( p_aout->output.p_sys->p_dsobject, GetDesktopWindow(), DSSCL_EXCLUSIVE) ) { msg_Warn( p_aout, "cannot set direct sound cooperative level" ); } return VLC_SUCCESS; error: p_aout->output.p_sys->p_dsobject = NULL; if( p_aout->output.p_sys->hdsound_dll ) { FreeLibrary( p_aout->output.p_sys->hdsound_dll ); p_aout->output.p_sys->hdsound_dll = NULL; } return VLC_EGENERIC; } /***************************************************************************** * CreateDSBuffer: Creates a direct sound buffer of the required format. ***************************************************************************** * This function creates the buffer we'll use to play audio. * In DirectSound there are two kinds of buffers: * - the primary buffer: which is the actual buffer that the soundcard plays * - the secondary buffer(s): these buffers are the one actually used by * applications and DirectSound takes care of mixing them into the primary. * * Once you create a secondary buffer, you cannot change its format anymore so * you have to release the current one and create another. *****************************************************************************/ static int CreateDSBuffer( aout_instance_t *p_aout, int i_format, int i_channels, int i_nb_channels, int i_rate, int i_bytes_per_frame, bool b_probe ) { WAVEFORMATEXTENSIBLE waveformat; DSBUFFERDESC dsbdesc; unsigned int i; /* First set the sound buffer format */ waveformat.dwChannelMask = 0; for( i = 0; i < sizeof(pi_channels_src)/sizeof(uint32_t); i++ ) { if( i_channels & pi_channels_src[i] ) waveformat.dwChannelMask |= pi_channels_in[i]; } switch( i_format ) { case VLC_FOURCC('s','p','d','i'): i_nb_channels = 2; /* To prevent channel re-ordering */ waveformat.dwChannelMask = SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT; waveformat.Format.wBitsPerSample = 16; waveformat.Samples.wValidBitsPerSample = waveformat.Format.wBitsPerSample; waveformat.Format.wFormatTag = WAVE_FORMAT_DOLBY_AC3_SPDIF; waveformat.SubFormat = _KSDATAFORMAT_SUBTYPE_DOLBY_AC3_SPDIF; break; case VLC_FOURCC('f','l','3','2'): waveformat.Format.wBitsPerSample = sizeof(float) * 8; waveformat.Samples.wValidBitsPerSample = waveformat.Format.wBitsPerSample; waveformat.Format.wFormatTag = WAVE_FORMAT_IEEE_FLOAT; waveformat.SubFormat = _KSDATAFORMAT_SUBTYPE_IEEE_FLOAT; break; case VLC_FOURCC('s','1','6','l'): waveformat.Format.wBitsPerSample = 16; waveformat.Samples.wValidBitsPerSample = waveformat.Format.wBitsPerSample; waveformat.Format.wFormatTag = WAVE_FORMAT_PCM; waveformat.SubFormat = _KSDATAFORMAT_SUBTYPE_PCM; break; } waveformat.Format.nChannels = i_nb_channels; waveformat.Format.nSamplesPerSec = i_rate; waveformat.Format.nBlockAlign = waveformat.Format.wBitsPerSample / 8 * i_nb_channels; waveformat.Format.nAvgBytesPerSec = waveformat.Format.nSamplesPerSec * waveformat.Format.nBlockAlign; p_aout->output.p_sys->i_bits_per_sample = waveformat.Format.wBitsPerSample; p_aout->output.p_sys->i_channels = i_nb_channels; /* Then fill in the direct sound descriptor */ memset(&dsbdesc, 0, sizeof(DSBUFFERDESC)); dsbdesc.dwSize = sizeof(DSBUFFERDESC); dsbdesc.dwFlags = DSBCAPS_GETCURRENTPOSITION2/* Better position accuracy */ | DSBCAPS_GLOBALFOCUS; /* Allows background playing */ /* Only use the new WAVE_FORMAT_EXTENSIBLE format for multichannel audio */ if( i_nb_channels <= 2 ) { waveformat.Format.cbSize = 0; } else { waveformat.Format.wFormatTag = WAVE_FORMAT_EXTENSIBLE; waveformat.Format.cbSize = sizeof(WAVEFORMATEXTENSIBLE) - sizeof(WAVEFORMATEX); /* Needed for 5.1 on emu101k */ dsbdesc.dwFlags |= DSBCAPS_LOCHARDWARE; } dsbdesc.dwBufferBytes = FRAMES_NUM * i_bytes_per_frame; /* buffer size */ dsbdesc.lpwfxFormat = (WAVEFORMATEX *)&waveformat; if FAILED( IDirectSound_CreateSoundBuffer( p_aout->output.p_sys->p_dsobject, &dsbdesc, &p_aout->output.p_sys->p_dsbuffer, NULL) ) { if( dsbdesc.dwFlags & DSBCAPS_LOCHARDWARE ) { /* Try without DSBCAPS_LOCHARDWARE */ dsbdesc.dwFlags &= ~DSBCAPS_LOCHARDWARE; if FAILED( IDirectSound_CreateSoundBuffer( p_aout->output.p_sys->p_dsobject, &dsbdesc, &p_aout->output.p_sys->p_dsbuffer, NULL) ) { return VLC_EGENERIC; } if( !b_probe ) msg_Dbg( p_aout, "couldn't use hardware sound buffer" ); } else { return VLC_EGENERIC; } } /* Stop here if we were just probing */ if( b_probe ) { IDirectSoundBuffer_Release( p_aout->output.p_sys->p_dsbuffer ); p_aout->output.p_sys->p_dsbuffer = NULL; return VLC_SUCCESS; } p_aout->output.p_sys->i_frame_size = i_bytes_per_frame; p_aout->output.p_sys->i_channel_mask = waveformat.dwChannelMask; p_aout->output.p_sys->b_chan_reorder = aout_CheckChannelReorder( pi_channels_in, pi_channels_out, waveformat.dwChannelMask, i_nb_channels, p_aout->output.p_sys->pi_chan_table ); if( p_aout->output.p_sys->b_chan_reorder ) { msg_Dbg( p_aout, "channel reordering needed" ); } return VLC_SUCCESS; } /***************************************************************************** * CreateDSBufferPCM: creates a PCM direct sound buffer. ***************************************************************************** * We first try to create a WAVE_FORMAT_IEEE_FLOAT buffer if supported by * the hardware, otherwise we create a WAVE_FORMAT_PCM buffer. ****************************************************************************/ static int CreateDSBufferPCM( aout_instance_t *p_aout, int *i_format, int i_channels, int i_nb_channels, int i_rate, bool b_probe ) { vlc_value_t val; var_Get( p_aout, "directx-audio-float32", &val ); /* Float32 audio samples are not supported for 5.1 output on the emu101k */ if( !val.b_bool || i_nb_channels > 2 || CreateDSBuffer( p_aout, VLC_FOURCC('f','l','3','2'), i_channels, i_nb_channels, i_rate, FRAME_SIZE * 4 * i_nb_channels, b_probe ) != VLC_SUCCESS ) { if ( CreateDSBuffer( p_aout, VLC_FOURCC('s','1','6','l'), i_channels, i_nb_channels, i_rate, FRAME_SIZE * 2 * i_nb_channels, b_probe ) != VLC_SUCCESS ) { return VLC_EGENERIC; } else { *i_format = VLC_FOURCC('s','1','6','l'); return VLC_SUCCESS; } } else { *i_format = VLC_FOURCC('f','l','3','2'); return VLC_SUCCESS; } } /***************************************************************************** * DestroyDSBuffer ***************************************************************************** * This function destroys the secondary buffer. *****************************************************************************/ static void DestroyDSBuffer( aout_instance_t *p_aout ) { if( p_aout->output.p_sys->p_dsbuffer ) { IDirectSoundBuffer_Release( p_aout->output.p_sys->p_dsbuffer ); p_aout->output.p_sys->p_dsbuffer = NULL; } } /***************************************************************************** * FillBuffer: Fill in one of the direct sound frame buffers. ***************************************************************************** * Returns VLC_SUCCESS on success. *****************************************************************************/ static int FillBuffer( aout_instance_t *p_aout, int i_frame, aout_buffer_t *p_buffer ) { notification_thread_t *p_notif = p_aout->output.p_sys->p_notif; aout_sys_t *p_sys = p_aout->output.p_sys; void *p_write_position, *p_wrap_around; long l_bytes1, l_bytes2; HRESULT dsresult; /* Before copying anything, we have to lock the buffer */ dsresult = IDirectSoundBuffer_Lock( p_sys->p_dsbuffer, /* DS buffer */ i_frame * p_notif->i_frame_size, /* Start offset */ p_notif->i_frame_size, /* Number of bytes */ &p_write_position, /* Address of lock start */ &l_bytes1, /* Count of bytes locked before wrap around */ &p_wrap_around, /* Buffer adress (if wrap around) */ &l_bytes2, /* Count of bytes after wrap around */ 0 ); /* Flags */ if( dsresult == DSERR_BUFFERLOST ) { IDirectSoundBuffer_Restore( p_sys->p_dsbuffer ); dsresult = IDirectSoundBuffer_Lock( p_sys->p_dsbuffer, i_frame * p_notif->i_frame_size, p_notif->i_frame_size, &p_write_position, &l_bytes1, &p_wrap_around, &l_bytes2, 0 ); } if( dsresult != DS_OK ) { msg_Warn( p_notif, "cannot lock buffer" ); if( p_buffer ) aout_BufferFree( p_buffer ); return VLC_EGENERIC; } if( p_buffer == NULL ) { memset( p_write_position, 0, l_bytes1 ); } else { if( p_sys->b_chan_reorder ) { /* Do the channel reordering here */ aout_ChannelReorder( p_buffer->p_buffer, p_buffer->i_nb_bytes, p_sys->i_channels, p_sys->pi_chan_table, p_sys->i_bits_per_sample ); } vlc_memcpy( p_write_position, p_buffer->p_buffer, l_bytes1 ); aout_BufferFree( p_buffer ); } /* Now the data has been copied, unlock the buffer */ IDirectSoundBuffer_Unlock( p_sys->p_dsbuffer, p_write_position, l_bytes1, p_wrap_around, l_bytes2 ); p_notif->i_write_slot = (i_frame + 1) % FRAMES_NUM; return VLC_SUCCESS; } /***************************************************************************** * DirectSoundThread: this thread will capture play notification events. ***************************************************************************** * We use this thread to emulate a callback mechanism. The thread probes for * event notification and fills up the DS secondary buffer when needed. *****************************************************************************/ static void DirectSoundThread( notification_thread_t *p_notif ) { aout_instance_t *p_aout = p_notif->p_aout; bool b_sleek; mtime_t last_time; HRESULT dsresult; long l_queued = 0; /* We don't want any resampling when using S/PDIF output */ b_sleek = p_aout->output.output.i_format == VLC_FOURCC('s','p','d','i'); /* Tell the main thread that we are ready */ vlc_thread_ready( p_notif ); msg_Dbg( p_notif, "DirectSoundThread ready" ); /* Wait here until Play() is called */ WaitForSingleObject( p_notif->event, INFINITE ); if( !p_notif->b_die ) { mwait( p_notif->start_date - AOUT_PTS_TOLERANCE / 2 ); /* start playing the buffer */ dsresult = IDirectSoundBuffer_Play( p_aout->output.p_sys->p_dsbuffer, 0, /* Unused */ 0, /* Unused */ DSBPLAY_LOOPING ); /* Flags */ if( dsresult == DSERR_BUFFERLOST ) { IDirectSoundBuffer_Restore( p_aout->output.p_sys->p_dsbuffer ); dsresult = IDirectSoundBuffer_Play( p_aout->output.p_sys->p_dsbuffer, 0, /* Unused */ 0, /* Unused */ DSBPLAY_LOOPING ); /* Flags */ } if( dsresult != DS_OK ) { msg_Err( p_aout, "cannot start playing buffer" ); } } last_time = mdate(); while( !p_notif->b_die ) { long l_read, l_free_slots; mtime_t mtime = mdate(); int i; /* * Fill in as much audio data as we can in our circular buffer */ /* Find out current play position */ if FAILED( IDirectSoundBuffer_GetCurrentPosition( p_aout->output.p_sys->p_dsbuffer, &l_read, NULL ) ) { msg_Err( p_aout, "GetCurrentPosition() failed!" ); l_read = 0; } /* Detect underruns */ if( l_queued && mtime - last_time > INT64_C(1000000) * l_queued / p_aout->output.output.i_rate ) { msg_Dbg( p_aout, "detected underrun!" ); } last_time = mtime; /* Try to fill in as many frame buffers as possible */ l_read /= p_aout->output.output.i_bytes_per_frame; l_queued = p_notif->i_write_slot * FRAME_SIZE - l_read; if( l_queued < 0 ) l_queued += (FRAME_SIZE * FRAMES_NUM); l_free_slots = (FRAMES_NUM * FRAME_SIZE - l_queued) / FRAME_SIZE; for( i = 0; i < l_free_slots; i++ ) { aout_buffer_t *p_buffer = aout_OutputNextBuffer( p_aout, mtime + INT64_C(1000000) * (i * FRAME_SIZE + l_queued) / p_aout->output.output.i_rate, b_sleek ); /* If there is no audio data available and we have some buffered * already, then just wait for the next time */ if( !p_buffer && (i || l_queued / FRAME_SIZE) ) break; if( FillBuffer( p_aout, p_notif->i_write_slot % FRAMES_NUM, p_buffer ) != VLC_SUCCESS ) break; } /* Sleep a reasonable amount of time */ l_queued += (i * FRAME_SIZE); msleep( INT64_C(1000000) * l_queued / p_aout->output.output.i_rate / 2 ); } /* make sure the buffer isn't playing */ IDirectSoundBuffer_Stop( p_aout->output.p_sys->p_dsbuffer ); /* free the event */ CloseHandle( p_notif->event ); msg_Dbg( p_notif, "DirectSoundThread exiting" ); }