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268 lines
11 KiB
268 lines
11 KiB
/*****************************************************************************
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* video_output.h : video output thread
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*****************************************************************************
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* Copyright (C) 1999, 2000 the VideoLAN team
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* $Id$
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*
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* Authors: Vincent Seguin <seguin@via.ecp.fr>
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* Samuel Hocevar <sam@via.ecp.fr>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
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*****************************************************************************/
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/**
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* \defgroup video_output Video Output
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* This module describes the programming interface for video output threads.
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* It includes functions allowing to open a new thread, send pictures to a
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* thread, and destroy a previously opened video output thread.
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* @{
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*/
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/**
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* Chroma conversion function
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*
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* This is the prototype common to all conversion functions.
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* \param p_vout video output thread
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* \param p_source source picture
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* \param p_dest destination picture
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* Picture width and source dimensions must be multiples of 16.
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*/
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typedef void (vout_chroma_convert_t)( vout_thread_t *,
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picture_t *, picture_t * );
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typedef struct vout_chroma_t
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{
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/** conversion functions */
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vout_chroma_convert_t *pf_convert;
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/** Private module-dependant data */
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chroma_sys_t * p_sys; /* private data */
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/** Plugin used and shortcuts to access its capabilities */
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module_t * p_module;
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} vout_chroma_t;
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/**
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* Video output thread descriptor
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*
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* Any independant video output device, such as an X11 window or a GGI device,
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* is represented by a video output thread, and described using the following
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* structure.
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*/
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struct vout_thread_t
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{
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VLC_COMMON_MEMBERS
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/** \name Thread properties and locks */
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/**@{*/
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vlc_mutex_t picture_lock; /**< picture heap lock */
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vlc_mutex_t subpicture_lock; /**< subpicture heap lock */
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vlc_mutex_t change_lock; /**< thread change lock */
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vout_sys_t * p_sys; /**< system output method */
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/**@}*/
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/** \name Current display properties */
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/**@{*/
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uint16_t i_changes; /**< changes made to the thread.
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\see \ref vout_changes */
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float f_gamma; /**< gamma */
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vlc_bool_t b_grayscale; /**< color or grayscale display */
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vlc_bool_t b_info; /**< print additional information */
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vlc_bool_t b_interface; /**< render interface */
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vlc_bool_t b_scale; /**< allow picture scaling */
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vlc_bool_t b_fullscreen; /**< toogle fullscreen display */
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uint32_t render_time; /**< last picture render time */
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unsigned int i_window_width; /**< video window width */
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unsigned int i_window_height; /**< video window height */
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unsigned int i_alignment; /**< video alignment in window */
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unsigned int i_par_num; /**< monitor pixel aspect-ratio */
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unsigned int i_par_den; /**< monitor pixel aspect-ratio */
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intf_thread_t *p_parent_intf; /**< parent interface for embedded
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vout (if any) */
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/**@}*/
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/** \name Plugin used and shortcuts to access its capabilities */
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/**@{*/
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module_t * p_module;
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int ( *pf_init ) ( vout_thread_t * );
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void ( *pf_end ) ( vout_thread_t * );
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int ( *pf_manage ) ( vout_thread_t * );
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void ( *pf_render ) ( vout_thread_t *, picture_t * );
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void ( *pf_display ) ( vout_thread_t *, picture_t * );
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void ( *pf_swap ) ( vout_thread_t * ); /* OpenGL only */
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int ( *pf_lock ) ( vout_thread_t * ); /* OpenGL only */
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void ( *pf_unlock ) ( vout_thread_t * ); /* OpenGL only */
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int ( *pf_control ) ( vout_thread_t *, int, va_list );
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/**@}*/
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/** \name Statistics
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* These numbers are not supposed to be accurate, but are a
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* good indication of the thread status */
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/**@{*/
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count_t c_fps_samples; /**< picture counts */
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mtime_t p_fps_sample[VOUT_FPS_SAMPLES]; /**< FPS samples dates */
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/**@}*/
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/** \name Video heap and translation tables */
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/**@{*/
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int i_heap_size; /**< heap size */
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picture_heap_t render; /**< rendered pictures */
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picture_heap_t output; /**< direct buffers */
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vlc_bool_t b_direct; /**< rendered are like direct ? */
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vout_chroma_t chroma; /**< translation tables */
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video_format_t fmt_render; /* render format (from the decoder) */
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video_format_t fmt_in; /* input (modified render) format */
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video_format_t fmt_out; /* output format (for the video output) */
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/**@}*/
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/* Picture heap */
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picture_t p_picture[2*VOUT_MAX_PICTURES+1]; /**< pictures */
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/* Subpicture unit */
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spu_t *p_spu;
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/* Statistics */
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count_t c_loops;
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count_t c_pictures, c_late_pictures;
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mtime_t display_jitter; /**< average deviation from the PTS */
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count_t c_jitter_samples; /**< number of samples used
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for the calculation of the
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jitter */
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/** delay created by internal caching */
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int i_pts_delay;
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/* Filter chain */
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char *psz_filter_chain;
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vlc_bool_t b_filter_change;
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/* Misc */
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vlc_bool_t b_snapshot; /**< take one snapshot on the next loop */
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};
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#define I_OUTPUTPICTURES p_vout->output.i_pictures
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#define PP_OUTPUTPICTURE p_vout->output.pp_picture
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#define I_RENDERPICTURES p_vout->render.i_pictures
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#define PP_RENDERPICTURE p_vout->render.pp_picture
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/** \defgroup vout_changes Flags for changes
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* These flags are set in the vout_thread_t::i_changes field when another
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* thread changed a variable
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* @{
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*/
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/** b_info changed */
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#define VOUT_INFO_CHANGE 0x0001
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/** b_grayscale changed */
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#define VOUT_GRAYSCALE_CHANGE 0x0002
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/** b_interface changed */
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#define VOUT_INTF_CHANGE 0x0004
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/** b_scale changed */
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#define VOUT_SCALE_CHANGE 0x0008
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/** gamma changed */
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#define VOUT_GAMMA_CHANGE 0x0010
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/** b_cursor changed */
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#define VOUT_CURSOR_CHANGE 0x0020
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/** b_fullscreen changed */
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#define VOUT_FULLSCREEN_CHANGE 0x0040
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/** size changed */
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#define VOUT_SIZE_CHANGE 0x0200
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/** depth changed */
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#define VOUT_DEPTH_CHANGE 0x0400
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/** change chroma tables */
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#define VOUT_CHROMA_CHANGE 0x0800
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/** cropping parameters changed */
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#define VOUT_CROP_CHANGE 0x1000
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/** aspect ratio changed */
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#define VOUT_ASPECT_CHANGE 0x2000
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/** change/recreate picture buffers */
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#define VOUT_PICTURE_BUFFERS_CHANGE 0x4000
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/**@}*/
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/* Alignment flags */
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#define VOUT_ALIGN_LEFT 0x0001
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#define VOUT_ALIGN_RIGHT 0x0002
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#define VOUT_ALIGN_HMASK 0x0003
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#define VOUT_ALIGN_TOP 0x0004
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#define VOUT_ALIGN_BOTTOM 0x0008
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#define VOUT_ALIGN_VMASK 0x000C
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#define MAX_JITTER_SAMPLES 20
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/*****************************************************************************
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* Prototypes
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*****************************************************************************/
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#define vout_Request(a,b,c) __vout_Request(VLC_OBJECT(a),b,c)
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VLC_EXPORT( vout_thread_t *, __vout_Request, ( vlc_object_t *, vout_thread_t *, video_format_t * ) );
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#define vout_Create(a,b) __vout_Create(VLC_OBJECT(a),b)
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VLC_EXPORT( vout_thread_t *, __vout_Create, ( vlc_object_t *, video_format_t * ) );
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VLC_EXPORT( void, vout_Destroy, ( vout_thread_t * ) );
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VLC_EXPORT( int, vout_VarCallback, ( vlc_object_t *, const char *, vlc_value_t, vlc_value_t, void * ) );
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VLC_EXPORT( int, vout_ChromaCmp, ( uint32_t, uint32_t ) );
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VLC_EXPORT( picture_t *, vout_CreatePicture, ( vout_thread_t *, vlc_bool_t, vlc_bool_t, unsigned int ) );
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VLC_EXPORT( void, vout_InitFormat, ( video_frame_format_t *, uint32_t, int, int, int ) );
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VLC_EXPORT( void, vout_DestroyPicture, ( vout_thread_t *, picture_t * ) );
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VLC_EXPORT( void, vout_DisplayPicture, ( vout_thread_t *, picture_t * ) );
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VLC_EXPORT( void, vout_DatePicture, ( vout_thread_t *, picture_t *, mtime_t ) );
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VLC_EXPORT( void, vout_LinkPicture, ( vout_thread_t *, picture_t * ) );
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VLC_EXPORT( void, vout_UnlinkPicture, ( vout_thread_t *, picture_t * ) );
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VLC_EXPORT( void, vout_PlacePicture, ( vout_thread_t *, unsigned int, unsigned int, unsigned int *, unsigned int *, unsigned int *, unsigned int * ) );
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picture_t * vout_RenderPicture ( vout_thread_t *, picture_t *,
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subpicture_t * );
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VLC_EXPORT( int, vout_vaControlDefault, ( vout_thread_t *, int, va_list ) );
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VLC_EXPORT( void *, vout_RequestWindow, ( vout_thread_t *, int *, int *, unsigned int *, unsigned int * ) );
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VLC_EXPORT( void, vout_ReleaseWindow, ( vout_thread_t *, void * ) );
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VLC_EXPORT( int, vout_ControlWindow, ( vout_thread_t *, void *, int, va_list ) );
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void vout_IntfInit( vout_thread_t * );
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static inline int vout_vaControl( vout_thread_t *p_vout, int i_query,
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va_list args )
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{
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if( p_vout->pf_control )
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return p_vout->pf_control( p_vout, i_query, args );
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else
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return VLC_EGENERIC;
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}
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static inline int vout_Control( vout_thread_t *p_vout, int i_query, ... )
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{
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va_list args;
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int i_result;
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va_start( args, i_query );
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i_result = vout_vaControl( p_vout, i_query, args );
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va_end( args );
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return i_result;
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}
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enum output_query_e
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{
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VOUT_GET_SIZE, /* arg1= unsigned int*, arg2= unsigned int*, res= */
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VOUT_SET_SIZE, /* arg1= unsigned int, arg2= unsigned int, res= */
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VOUT_SET_STAY_ON_TOP, /* arg1= vlc_bool_t res= */
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VOUT_REPARENT,
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VOUT_SNAPSHOT,
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VOUT_CLOSE,
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VOUT_SET_FOCUS /* arg1= vlc_bool_t res= */
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};
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/**
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* @}
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*/
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