[vlc-devel] [PATCH 1/8] vout display: add an API to handle surface rendering through a callback

[Rémi Denis-Courmont]

Sure there is. Video callbacks support it fully. X11 and HWND automatically use a separate window if there is more than one track.

Le 7 mai 2019 09:34:43 GMT+03:00, Steve Lhomme <robux4 at ycbcr.xyz> a écrit :
>On 2019-05-06 17:06, Rémi Denis-Courmont wrote:
>> Le maanantaina 6. toukokuuta 2019, 16.01.30 EEST Steve Lhomme a écrit
>:
>>> The callbacks will be used by D3D but could also be used by other
>rendering
>>> engines.
>>> ---
>>>   include/vlc_vout_display.h | 27 +++++++++++++++++++++++++++
>>>   1 file changed, 27 insertions(+)
>>>
>>> diff --git a/include/vlc_vout_display.h b/include/vlc_vout_display.h
>>> index bdae03881c..7b2c9cf0d3 100644
>>> --- a/include/vlc_vout_display.h
>>> +++ b/include/vlc_vout_display.h
>>> @@ -455,5 +455,32 @@ VLC_API void
>>> vout_display_PlacePicture(vout_display_place_t *place, const video_
>void
>>> vout_display_TranslateMouseState(vout_display_t *vd, vlc_mouse_t
>*video,
>>> const vlc_mouse_t *window);
>>>
>>> +/*** rendering to external surfaces ***/
>>> +typedef struct
>>> +{
>>> +    bool hardware_decoding; /** set if
>D3D11_CREATE_DEVICE_VIDEO_SUPPORT is
>>> needed */ +} vlc_video_surface_device_cfg_t;
>>> +
>>> +typedef struct
>>> +{
>>> +    void *device_context; /** ID3D11DeviceContext* for D3D11,
>>> IDirect3DDevice9* for D3D9 */ +} vlc_video_surface_device_setup_t;
>>> +
>>> +typedef struct
>>> +{
>>> +    unsigned width, height;
>>> +} vlc_video_surface_cfg_t;
>>> +
>>> +typedef struct
>>> +{
>>> +    intptr_t          surface_format; /* DXGI_FORMAT for D3D11,
>D3DFORMAT
>>> for D3D9 */ +} video_surface_output_cfg_t;
>>> +
>>> +typedef bool( *vlc_video_surface_device_setup_cb )( void *opaque,
>const
>>> vlc_video_surface_device_cfg_t *cfg,
>vlc_video_surface_device_setup_t *out
>>> ); +typedef void( *vlc_video_surface_device_cleanup_cb )( void
>*opaque );
>>> +typedef bool( *vlc_video_surface_update_output_cb )( void *opaque,
>const
>>> vlc_video_surface_cfg_t *cfg, video_surface_output_cfg_t *output );
>>> +typedef void( *vlc_video_swap_cb )( void* opaque );
>>> +typedef bool( *vlc_video_surface_start_rendering_cb )( void
>*opaque, bool
>>> enter );
>> How does the application track per-surface private data here?
>
>There's currently no support for rendering multiple tracks in a target,
>
>be it OpenGL, Direct3D, HWND, NSView. That would be another topic/task.
>
>>
>>> +
>>>   /** @} */
>>>   #endif /* VLC_VOUT_DISPLAY_H */
>>
>> -- 
>> レミ・デニ-クールモン
>> http://www.remlab.net/
>>
>>
>>
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