video_output.h
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上传日期:2009-03-27
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- /*****************************************************************************
- * video_output.h : video output thread
- *****************************************************************************
- * Copyright (C) 1999, 2000 VideoLAN
- * $Id: video_output.h 8709 2004-09-15 15:50:54Z gbazin $
- *
- * Authors: Vincent Seguin <seguin@via.ecp.fr>
- * Samuel Hocevar <sam@via.ecp.fr>
- *
- * 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., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
- *****************************************************************************/
- /**
- * defgroup video_output Video Output
- * This module describes the programming interface for video output threads.
- * It includes functions allowing to open a new thread, send pictures to a
- * thread, and destroy a previously opened video output thread.
- * @{
- */
- /**
- * Chroma conversion function
- *
- * This is the prototype common to all conversion functions.
- * param p_vout video output thread
- * param p_source source picture
- * param p_dest destination picture
- * Picture width and source dimensions must be multiples of 16.
- */
- typedef void (vout_chroma_convert_t)( vout_thread_t *,
- picture_t *, picture_t * );
- typedef struct vout_chroma_t
- {
- /** conversion functions */
- vout_chroma_convert_t *pf_convert;
- /** Private module-dependant data */
- chroma_sys_t * p_sys; /* private data */
- /** Plugin used and shortcuts to access its capabilities */
- module_t * p_module;
- } vout_chroma_t;
- /**
- * Video output thread descriptor
- *
- * Any independant video output device, such as an X11 window or a GGI device,
- * is represented by a video output thread, and described using the following
- * structure.
- */
- struct vout_thread_t
- {
- VLC_COMMON_MEMBERS
- /** name Thread properties and locks */
- /**@{*/
- vlc_mutex_t picture_lock; /**< picture heap lock */
- vlc_mutex_t subpicture_lock; /**< subpicture heap lock */
- vlc_mutex_t change_lock; /**< thread change lock */
- vout_sys_t * p_sys; /**< system output method */
- /**@}*/
- /** name Current display properties */
- /**@{*/
- uint16_t i_changes; /**< changes made to the thread.
- see ref vout_changes */
- float f_gamma; /**< gamma */
- vlc_bool_t b_grayscale; /**< color or grayscale display */
- vlc_bool_t b_info; /**< print additional information */
- vlc_bool_t b_interface; /**< render interface */
- vlc_bool_t b_scale; /**< allow picture scaling */
- vlc_bool_t b_fullscreen; /**< toogle fullscreen display */
- vlc_bool_t b_override_aspect; /**< aspect ratio overriden */
- uint32_t render_time; /**< last picture render time */
- unsigned int i_window_width; /**< video window width */
- unsigned int i_window_height; /**< video window height */
- unsigned int i_alignment; /**< video alignment in window */
- intf_thread_t *p_parent_intf; /**< parent interface for embedded
- vout (if any) */
- /**@}*/
- /** name Plugin used and shortcuts to access its capabilities */
- /**@{*/
- module_t * p_module;
- int ( *pf_init ) ( vout_thread_t * );
- void ( *pf_end ) ( vout_thread_t * );
- int ( *pf_manage ) ( vout_thread_t * );
- void ( *pf_render ) ( vout_thread_t *, picture_t * );
- void ( *pf_display ) ( vout_thread_t *, picture_t * );
- void ( *pf_swap ) ( vout_thread_t * ); /* OpenGL only */
- int ( *pf_control ) ( vout_thread_t *, int, va_list );
- /**@}*/
- /** name Statistics
- * These numbers are not supposed to be accurate, but are a
- * good indication of the thread status */
- /**@{*/
- count_t c_fps_samples; /**< picture counts */
- mtime_t p_fps_sample[VOUT_FPS_SAMPLES]; /**< FPS samples dates */
- /**@}*/
- /** name Video heap and translation tables */
- /**@{*/
- int i_heap_size; /**< heap size */
- picture_heap_t render; /**< rendered pictures */
- picture_heap_t output; /**< direct buffers */
- vlc_bool_t b_direct; /**< rendered are like direct ? */
- vout_chroma_t chroma; /**< translation tables */
- /**@}*/
- /* Picture heap */
- picture_t p_picture[2*VOUT_MAX_PICTURES+1]; /**< pictures */
- /* Subpicture unit */
- spu_t *p_spu;
- /* Statistics */
- count_t c_loops;
- count_t c_pictures, c_late_pictures;
- mtime_t display_jitter; /**< average deviation from the PTS */
- count_t c_jitter_samples; /**< number of samples used
- for the calculation of the
- jitter */
- /** delay created by internal caching */
- int i_pts_delay;
- /* Filter chain */
- char *psz_filter_chain;
- vlc_bool_t b_filter_change;
- };
- #define I_OUTPUTPICTURES p_vout->output.i_pictures
- #define PP_OUTPUTPICTURE p_vout->output.pp_picture
- #define I_RENDERPICTURES p_vout->render.i_pictures
- #define PP_RENDERPICTURE p_vout->render.pp_picture
- /** defgroup vout_changes Flags for changes
- * These flags are set in the vout_thread_t::i_changes field when another
- * thread changed a variable
- * @{
- */
- /** b_info changed */
- #define VOUT_INFO_CHANGE 0x0001
- /** b_grayscale changed */
- #define VOUT_GRAYSCALE_CHANGE 0x0002
- /** b_interface changed */
- #define VOUT_INTF_CHANGE 0x0004
- /** b_scale changed */
- #define VOUT_SCALE_CHANGE 0x0008
- /** gamma changed */
- #define VOUT_GAMMA_CHANGE 0x0010
- /** b_cursor changed */
- #define VOUT_CURSOR_CHANGE 0x0020
- /** b_fullscreen changed */
- #define VOUT_FULLSCREEN_CHANGE 0x0040
- /** size changed */
- #define VOUT_SIZE_CHANGE 0x0200
- /** depth changed */
- #define VOUT_DEPTH_CHANGE 0x0400
- /** change chroma tables */
- #define VOUT_CHROMA_CHANGE 0x0800
- /** change/recreate picture buffers */
- #define VOUT_PICTURE_BUFFERS_CHANGE 0x1000
- /**@}*/
- /* Alignment flags */
- #define VOUT_ALIGN_LEFT 0x0001
- #define VOUT_ALIGN_RIGHT 0x0002
- #define VOUT_ALIGN_HMASK 0x0003
- #define VOUT_ALIGN_TOP 0x0004
- #define VOUT_ALIGN_BOTTOM 0x0008
- #define VOUT_ALIGN_VMASK 0x000C
- #define MAX_JITTER_SAMPLES 20
- /*****************************************************************************
- * Prototypes
- *****************************************************************************/
- #define vout_Request(a,b,c,d,e,f) __vout_Request(VLC_OBJECT(a),b,c,d,e,f)
- VLC_EXPORT( vout_thread_t *, __vout_Request, ( vlc_object_t *, vout_thread_t *, unsigned int, unsigned int, uint32_t, unsigned int ) );
- #define vout_Create(a,b,c,d,e) __vout_Create(VLC_OBJECT(a),b,c,d,e)
- VLC_EXPORT( vout_thread_t *, __vout_Create, ( vlc_object_t *, unsigned int, unsigned int, uint32_t, unsigned int ) );
- VLC_EXPORT( void, vout_Destroy, ( vout_thread_t * ) );
- VLC_EXPORT( int, vout_VarCallback, ( vlc_object_t *, const char *, vlc_value_t, vlc_value_t, void * ) );
- VLC_EXPORT( int, vout_ChromaCmp, ( uint32_t, uint32_t ) );
- VLC_EXPORT( picture_t *, vout_CreatePicture, ( vout_thread_t *, vlc_bool_t, vlc_bool_t, unsigned int ) );
- VLC_EXPORT( void, vout_InitFormat, ( video_frame_format_t *, uint32_t, int, int, int ) );
- VLC_EXPORT( void, vout_DestroyPicture, ( vout_thread_t *, picture_t * ) );
- VLC_EXPORT( void, vout_DisplayPicture, ( vout_thread_t *, picture_t * ) );
- VLC_EXPORT( void, vout_DatePicture, ( vout_thread_t *, picture_t *, mtime_t ) );
- VLC_EXPORT( void, vout_LinkPicture, ( vout_thread_t *, picture_t * ) );
- VLC_EXPORT( void, vout_UnlinkPicture, ( vout_thread_t *, picture_t * ) );
- VLC_EXPORT( void, vout_PlacePicture, ( vout_thread_t *, unsigned int, unsigned int, unsigned int *, unsigned int *, unsigned int *, unsigned int * ) );
- picture_t * vout_RenderPicture ( vout_thread_t *, picture_t *,
- subpicture_t * );
- VLC_EXPORT( int, vout_vaControlDefault, ( vout_thread_t *, int, va_list ) );
- VLC_EXPORT( void *, vout_RequestWindow, ( vout_thread_t *, int *, int *, unsigned int *, unsigned int * ) );
- VLC_EXPORT( void, vout_ReleaseWindow, ( vout_thread_t *, void * ) );
- VLC_EXPORT( int, vout_ControlWindow, ( vout_thread_t *, void *, int, va_list ) );
- void vout_IntfInit( vout_thread_t * );
- static inline int vout_vaControl( vout_thread_t *p_vout, int i_query,
- va_list args )
- {
- if( p_vout->pf_control )
- return p_vout->pf_control( p_vout, i_query, args );
- else
- return VLC_EGENERIC;
- }
- static inline int vout_Control( vout_thread_t *p_vout, int i_query, ... )
- {
- va_list args;
- int i_result;
- va_start( args, i_query );
- i_result = vout_vaControl( p_vout, i_query, args );
- va_end( args );
- return i_result;
- }
- enum output_query_e
- {
- VOUT_SET_ZOOM, /* arg1= double res= */
- VOUT_SET_STAY_ON_TOP, /* arg1= vlc_bool_t res= */
- VOUT_REPARENT,
- VOUT_CLOSE
- };
- /**
- * @}
- */